CN222995331U - breaker - Google Patents

Abstract

The utility model relates to the field of low-voltage electrical appliances, and specifically to a circuit breaker, whose main circuit structure comprises an operating member, an electromagnetic system, a contact system, an arc extinguishing system, and a control system. The operating member slides back and forth to drive the contact system to close and open through the electromagnetic system, and the control system controls the action of the electromagnetic system to drive the contact system to close and open. The main circuit structure also comprises a sampling device. When an overload and/or short-circuit current flows through the contact system, the electromagnetic system is controlled by the control system to drive the contact system to open. The circuit breaker has a simple structure and can be applied to a variety of current protection thresholds.

Description

Circuit breaker

Technical Field

The utility model relates to the field of piezoelectric devices, in particular to a circuit breaker.

Background

The basic structure of the existing circuit breaker, in particular to an intelligent circuit breaker, generally comprises a short-circuit protection module, an overload protection module, an operating mechanism and an electric operation module, wherein the short-circuit protection module and the overload protection module are generally arranged according to different current specifications of the circuit breaker, the electric operation module realizes remote operation in a mode of matching a motor and a gear, and the existing circuit breaker has the problems of complex structure, large volume and poor reliability of short-circuit and overload protection. In addition, the structure of the existing breaker for indicating the opening and closing state is large in occupied space. In addition, the existing circuit breaker only depends on a mechanical indication structure to indicate the opening and closing state, and reliability is poor. Furthermore, existing circuit breakers, particularly intelligent circuit breakers, lack the necessary locking structure to prevent the circuit breaker from being pulled out of the circuit breaker mounting cabinet (e.g., a power distribution cabinet, a control cabinet, or other electrical cabinet) in a closed state and to prevent the circuit breaker from being installed into the circuit breaker mounting cabinet in a closed state.

Disclosure of Invention

The utility model aims to overcome at least one defect of the prior art and provide a circuit breaker which has a simple structure and can be suitable for various protection current thresholds.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

The circuit breaker comprises a shell and a main loop structure, wherein the main loop structure comprises an operating piece which is arranged on the shell in a sliding manner, an electromagnetic system, a contact system, an arc extinguishing system which is matched with the contact system for use, and a control system which is connected with the electromagnetic system in a control manner, the electromagnetic system comprises a magnetic generating component and a push rod which is movably inserted in the middle of the magnetic generating component, the contact system comprises a movable contact mechanism and a fixed contact, two ends of the push rod are respectively matched with the operating piece and the movable contact mechanism in a transmission manner, the operating piece slides back and forth to drive the contact system to be closed and opened through the electromagnetic system, and the control system controls the electromagnetic system to act to drive the contact system to be closed and opened;

the main loop structure also comprises a sampling device which is coupled with the contact system and is connected with the control system, and when overload and/or short-circuit current flows in the contact system, the electromagnetic system is controlled by the control system to drive the contact system to be disconnected.

The circuit breaker further comprises a length direction d1, a width direction d2 and a height direction d3, an operating piece is arranged at one end of the shell in the length direction d1, a sampling device and an arc extinguishing system are arranged at the other end of the shell, the electromagnetic system and the contact system are sequentially arranged between the operating piece and the arc extinguishing system along the length direction d1, the sampling device and the arc extinguishing system are arranged side by side along the height direction d3, the control system comprises a circuit board, and at least part of the circuit board and the electromagnetic system are arranged side by side along the height direction d 3.

Further, the circuit board is arranged side by side with the contact system and/or the arc extinguishing system in the width direction d 2.

Further, the operating member, the electromagnetic system and the sampling device are arranged on the same side of the arc extinguishing system in the height direction d 3.

Further, the main loop structure further comprises a first terminal and a third terminal which are respectively arranged at two ends of the shell along the length direction d1, the contact system is connected between the first terminal and the third terminal in series, the third terminal and the operating piece are arranged side by side along the height direction d3, the electromagnetic system, the arc extinguishing system, the sampling device and the control system are located between the operating piece and the first terminal in the length direction d1, and the operating piece, the electromagnetic system, the sampling device and the first terminal are located on the same side of the third terminal and the arc extinguishing system in the height direction d 3.

Further, the sampling device is a manganese copper shunt, and the first terminal, the sampling device, the moving contact mechanism, the fixed contact and the third terminal are sequentially connected in series;

Or the sampling device is a mutual inductor, and the first terminal, the moving contact mechanism, the fixed contact and the third terminal are sequentially connected in series.

Further, the main loop structure further comprises a connecting conductor, the fixed contact is electrically connected with the third terminal through the connecting conductor, the connecting conductor is a conducting plate, and the connecting conductor and a circuit board of the control system are arranged side by side along the width direction d 2.

Further, the control system further comprises a first sampling terminal arranged on the circuit board, the first sampling terminal and the connecting conductor are located on one side of the circuit board in the width direction d2, the connecting conductor is in plug-in fit with the first sampling terminal, and the connecting conductor, the first sampling terminal and the electromagnetic system are arranged side by side along the height direction d 3.

Further, the circuit breaker further comprises a secondary loop structure, wherein the secondary loop structure is a through circuit and comprises a second terminal, a through conductor and a fourth terminal which are sequentially connected in series, the second terminal and the first terminal are arranged side by side in the height direction d3, the fourth terminal and the third terminal are arranged side by side in the width direction d2, and the electromagnetic system, the contact system, the arc extinguishing system and the sampling device are arranged side by side in the height direction d3 with the through conductor.

Further, the control system further comprises a second sampling terminal arranged on the circuit board, the through conductor is a through conducting plate, at least part of the through conducting plate and the circuit board of the control system are arranged side by side along the width direction d2, the part of the through conducting plate and the second sampling terminal are positioned on one side of the circuit board in the width direction d2 and are in plug-in fit with the second sampling terminal, and the through conducting plate, the second sampling terminal and the electromagnetic system are arranged side by side along the height direction d 3.

Further, the main loop structure further comprises a signal terminal connected with the control system, and the first terminal, the signal terminal and the second terminal are arranged side by side along the height direction d 3.

Further, in the length direction d1, the first terminal and the third terminal are provided at one end of the circuit breaker, and the operating member is provided at the other end of the circuit breaker.

The main loop structure further comprises a trigger mechanism connected with the control system, the trigger mechanism is triggered by the operating piece moving to the closing position to send a first closing signal to the control system, the control system receives the first closing signal to control the electromagnetic system to drive the contact system to be closed, and the operating piece moves to the opening position from the closing position to drive the moving contact mechanism to move through the ejector rod to enable the contact system to be opened.

Further, the operating piece comprises an operating piece main body and an operating piece connecting part, one end of the operating piece main body protrudes outside the shell for external force operation, the other end of the operating piece main body is connected with the operating piece connecting part, and one end of the ejector rod is matched with the operating piece connecting part and is arranged in a relatively moving mode along the length direction d 1.

The connecting part of the operating piece comprises a connecting part cavity, the ejector rod comprises a front rod body and a front connecting cap, the front connecting cap comprises a front cap peak, the front cap peak protrudes out of one side of the front rod body along the radial direction of the front rod body, the front connecting cap is movably arranged in the connecting part cavity, the side wall of the connecting part cavity is in transmission fit with the front cap peak, and when the operating piece moves from a closing position to a separating position, the ejector rod is driven to move so as to drive the moving contact mechanism to move through the ejector rod, so that the contact system is disconnected.

Further, the operating piece is provided with a closing position and a separating position, and when the operating piece is switched between the closing position and the separating position, the ejector rod is directly driven to move so as to drive the moving contact mechanism and the fixed contact to be closed and opened.

Further, the circuit breaker still includes the preceding connecting rod that links to each other and synchronous motion setting with the operating means, and ejector pin one end links to each other and along length direction d1 relative motion setting with preceding connecting rod.

The ejector rod comprises a front rod body and a front connecting cap, the outer diameter of the front connecting cap is larger than that of the front rod body, the front rod body is slidably inserted into the front connecting rod jack, the outer diameter of the front rod body is matched with the inner diameter of the front connecting rod jack, the front connecting cap is arranged in the front connecting rod cavity, and the outer diameter of the front connecting cap is larger than the inner diameter of the front connecting rod jack.

The circuit breaker further comprises an indicating piece which is rotatably arranged in the middle of the operating piece and provided with a first indicating position and a second indicating position, the operating piece comprises an indicating hole matched with the indicating piece, when the operating piece moves to the closing position, the indicating piece is driven by an indicating piece driving structure of the circuit breaker to rotate to the first indicating position, and when the operating piece moves to the opening position, the indicating piece is driven by the indicating piece driving structure of the circuit breaker to rotate to the second indicating position.

Further, the circuit breaker further comprises a rear connecting rod, one end of the ejector rod is in transmission connection with the operating piece, the other end of the ejector rod is connected with the rear connecting rod and moves synchronously, and the rear connecting rod is hinged with the contact support of the moving contact mechanism.

Further, the back connecting rod is equipped with back connecting rod chamber and back connecting rod jack, and back connecting rod jack sets up on the lateral wall in back connecting rod chamber, and the ejector pin includes back body of rod and back connecting cap, and the external diameter of back connecting cap is greater than the external diameter of back body of rod, and the external diameter looks adaptation of back connecting rod jack and back body of rod just is less than the external diameter of back connecting cap, and the back body of rod is inserted in back connecting rod jack and back connecting cap is arranged in back connecting rod intracavity.

And in the rear connecting rod and the contact support, one rear connecting shaft moves synchronously with the rear connecting shaft, and the other rear connecting shaft is provided with a kidney-shaped hole matched with the rear connecting shaft.

Further, the main circuit structure further comprises an operation piece reset spring, and the operation piece reset spring acts on the operation piece to enable the operation piece to move towards the opening position.

Further, the moving contact mechanism comprises two groups of moving contacts which are arranged side by side along the width direction d 2.

Further, the shell further comprises a signal window and an operating piece mounting hole, wherein the signal window and the operating piece mounting hole are respectively arranged on the same side wall of the shell, the operating piece mounting hole is used for inserting an operating piece, the signal window and the operating piece mounting hole are arranged side by side in the height direction d3, and the circuit breaker further comprises an indicating element connected with the control system, and the indicating element is matched with the signal window and used for indicating the state of the circuit breaker.

Further, the circuit breaker further comprises a first locking piece and a first locking piece reset spring, wherein the first locking piece and the first locking piece reset spring are arranged in the shell in a sliding manner along the height direction d3, the first locking piece reset spring acts on the first locking piece to enable the first locking piece to have a trend of moving towards the outside of the shell, a first locking protrusion of the first locking piece protrudes out of the shell, and the first locking piece moves towards the inside of the shell when the first locking protrusion is extruded by external force;

The circuit breaker further comprises an unlocking mechanism, wherein the unlocking mechanism is an unlocking rod, one end of the unlocking rod is in direct or indirect transmission fit with the operating piece 2, and the other end of the unlocking rod is in transmission fit with the first locking piece.

The circuit breaker further comprises a second locking piece rotatably arranged on the shell, the second locking piece comprises a second locking protrusion, when the circuit breaker is closed, the second locking piece is driven by the operating piece to rotate forward so that the second locking protrusion protrudes out of the shell, and when the circuit breaker is opened, the second locking piece rotates reversely so that the second locking protrusion moves towards the inside of the shell.

Further, when the breaker is opened, the second locking piece is driven by the operating piece moving to the opening position to reversely rotate.

The circuit breaker further comprises a first locking piece and a first locking piece reset spring, wherein the first locking piece and the first locking piece reset spring are arranged on the shell in a sliding mode along the height direction d3, the first locking piece reset spring acts on the first locking piece to enable the first locking piece to move towards the outside of the shell, a first locking protrusion of the first locking piece protrudes out of the shell, the first locking piece is driven by a pulled operating piece to move towards the inside of the shell in a breaking state of the circuit breaker, the second locking piece is in transmission fit with the first locking piece, and when the circuit breaker breaks the brake, the first locking piece is driven by a second locking piece which rotates reversely to move towards the inside of the shell.

The electromagnetic system further comprises a movable iron core which is arranged in the middle of the coil assembly in a sliding manner, is connected with the ejector rod and synchronously moves, two ends of the ejector rod respectively protrude out of two axial sides of the coil assembly, and further comprises a first static iron core and a second static iron core which are oppositely arranged in the axial direction of the coil assembly, wherein the ejector rod is arranged at a first position when one end of the movable iron core is attracted with the first static iron core, and the ejector rod is arranged at a second position when the movable iron core is attracted with the second static iron core;

The ejector rod comprises a front ejector rod and a rear ejector rod, one end of the front ejector rod is inserted into the movable iron core, the other end of the front ejector rod is in transmission connection with the operating piece, and one end of the rear ejector rod is inserted into the movable iron core, and the other end of the rear ejector rod is in transmission connection with the movable contact mechanism.

Further, the length a of the shell is 100-150 mm, the width b of the shell is 10-60 mm, and the height c of the shell is 38-45 mm.

Further, the width b of the shell is 10mm, 15mm, 20mm, 30mm or 60mm.

The circuit breaker disclosed by the utility model realizes manual and electric opening and closing operation through the operating part, the electromagnetic system and the control system, is simple in structure and simple and convenient to operate, is used as a power mechanism for driving the contact system to be closed and opened and is also used as a mechanism for realizing overload and/or short-circuit protection, compared with the existing circuit breaker, the circuit breaker can cancel a bimetal element for realizing overload protection and/or an electromagnetic release for realizing short-circuit protection, is beneficial to reducing the number of components of the circuit breaker, simplifies the structure of the circuit breaker, provides a larger space for the layout of each component of the circuit breaker, is beneficial to reducing the overall dimension specification of the circuit breaker, is reasonable and compact in internal layout, and is beneficial to further reducing the overall dimension specification of the circuit breaker.

In addition, the indicator rotates the operating member middle part that sets up, improves the structure compactness, has practiced thrift the inner space of circuit breaker.

In addition, the signal window is used for indicating the state of the circuit breaker, so that the reliability and the accuracy of the indication are improved.

In addition, the first locking piece prevents the circuit breaker from being pulled out of the circuit breaker installation cabinet in a closing state, electricity safety, stability and continuity are guaranteed, and the second locking piece prevents the circuit breaker from being installed into the circuit breaker installation cabinet in the closing state, so that personal safety of operators is guaranteed.

Drawings

Fig. 1 is a schematic structural view of the circuit breaker of the present utility model, at least showing the structure of a case;

fig. 2 is a projection view of the circuit breaker of the present utility model, showing the structure of the operating system of the first embodiment;

FIG. 3 is a schematic diagram of an operating system according to a first embodiment of the present utility model;

FIG. 4 is an exploded view of the operating system of the first embodiment of the present utility model;

FIG. 5 is a cross-sectional view of the operating system of the first embodiment of the present utility model, showing the process of the operating system of the first embodiment performing a closing operation;

Fig. 6 is a projection view of the circuit breaker of the present utility model, showing the structure of the operating system of the second embodiment;

FIG. 7 is a schematic diagram of an operating system according to a second embodiment of the present utility model;

FIG. 8 is another schematic diagram of an operating system according to a second embodiment of the present utility model;

FIG. 9 is a schematic cross-sectional view of an operating system according to a second embodiment of the present utility model;

FIG. 10 is an exploded view of the operating system of the second embodiment of the present utility model;

Fig. 11 is a schematic view of the matching relationship between the front link and the second locking member and the state of the first locking member when the circuit breaker of the present utility model is in the closed state;

Fig. 12 is a schematic view showing the mating relationship of the front link and the second locking member and the state of the first locking member when the circuit breaker of the present utility model is in the open state and the operating member is pulled.

Description of the reference numerals

The device comprises a shell 1, an installation guide structure 1-1, a first jack 1-20, a second jack 1-21, a signal jack 1-3, a signal window 1-4, a third jack 1-50, a fourth jack 1-51 and an operating piece installation hole 1-6;

An operating element 2, an operating element main body 2b, an operating element connecting part 2c, a connecting part jack 2-0c, a connecting part cavity 2-1c, an operating element triggering part 2-0c, an operating element matching part 2p, an indicating hole 2-1, an installing cavity 2-2, an operating element shaft groove 2-3 and an operating element shaft hole 2-4;

The electromagnetic mechanism 3, the electromagnetic system 3-0, the magnetism generating component 3-0m, the coil component 3-01, the movable iron core 3-02, the magnetic yoke 3-03, the permanent magnet 3-04, the ejector rod 3-05, the front ejector rod 3-050, the front rod body 3-0500, the front connecting cap 3-0501, the rear ejector rod 3-051, the rear rod body 3-0510, the rear connecting cap 3-0511, the front connecting rod 3-1, the front connecting rod driving part 3-11, the front connecting rod cavity 3-110, the front connecting rod jack 3-111, the front connecting rod connecting part 3-12, the front connecting rod first transition surface 3-121, the front connecting rod limiting surface 3-122, the front connecting rod second transition surface 3-123, the front connecting rod connecting arm 3-120, the front connecting rod connecting hole 3-1200, the rear connecting rod 3-2, the rear connecting rod cavity 3-20, the rear connecting rod jack 3-21, the rear connecting rod connecting hole 3-22, the front connecting shaft 3-31 and the rear connecting shaft 3-32;

The contact system 4, the moving contact mechanism 4-1, the contact support 4-10, the support connecting hole 4-100, the moving contact 4-11, the moving contact shaft 4-12 and the fixed contact 4-2;

A third terminal 5-0, a fourth terminal 5-1;

An arc extinguishing system 6;

A sampling device 7;

A first terminal 8-0, a second terminal 8-1;

A secondary loop structure 9;

A first sampling terminal 10-0, a second sampling terminal 10-1;

a control system 11, a circuit board 11p, a first sampling terminal 11-0, and a second sampling terminal 11-1;

A signal terminal 12;

the indicator comprises an indicator 13, an indicator part 13-0, an indicator connecting part 13-1, an indicator mounting part 13-2, an indicator first driven part 13-30 and an indicator second driven part 13-31;

a first locking piece 14, a first locking projection 14-1, a first locking piece driven portion 14-2;

The second locking piece 15, the second locking protrusion 15-0, the second locking piece rear arm 15-1, the second locking piece mounting part 15-2, the second locking piece front arm 15-3, the second locking piece mating part 15-4, the mating part transition surface 15-41, the mating part limiting surface 15-40;

A first locking member return spring 16;

a trigger mechanism 17;

An operating member return spring 18;

An unlocking mechanism 19;

and a connection conductor 20.

Detailed Description

Embodiments of the circuit breaker of the present utility model are further described below with reference to the examples shown in the drawings. The circuit breaker of the present utility model is not limited to the description of the following embodiments.

As shown in fig. 1-2 and 6, the circuit breaker of the present utility model comprises a housing 1 and a main circuit structure including an operating member 2 slidably disposed on the housing 1, and an operating mechanism 3, a contact system 4, an arc extinguishing system 6, and a control system 11, each disposed within the housing 1. The operating element 2 has a switching-off position and a switching-on position, and the operating element 2 is switched between the switching-off position and the switching-on position by sliding reciprocally. The operating mechanism 3 comprises an electromagnetic system 3-0, the electromagnetic system 3-0 comprises a magnetism generating component 3-0m and a push rod 3-05 which is movably inserted in the middle of the magnetism generating component 3-0m, and the push rod 3-05 has a first position and a second position and is switched between the first position and the second position through reciprocating movement. The contact system 4 comprises a moving contact mechanism 4-1 and a fixed contact 4-2 which are matched, the moving contact mechanism 4-1 is provided with a closed position and an open position, the moving contact mechanism 4-1 is closed with the fixed contact 4-2 when in the closed position (namely, the contact system 4 is in the closed state), the moving contact mechanism 4-1 is disconnected with the fixed contact 4-2 when in the open position (namely, the contact system 4 is in the open state), one end of the ejector rod 3-05 is in transmission connection with the moving contact mechanism 4-1, and the ejector rod 3-05 is switched between a first position and a second position to drive the moving contact mechanism 4-1 to be switched between the closed position and the open position. The arc extinguishing system 6 is used in cooperation with the contact system 4 for extinguishing an arc generated when the contact system 4 is closed and opened. The operating member 2 is switched between a closing position and a breaking position, and the moving contact mechanism 4-1 is driven by the electromagnetic system 3-0 to be switched between a closing position and an opening position, so that the contact system 4 is switched between a closing state and an opening state, namely, the circuit breaker of the utility model is switched between a closing state and a breaking state. The electromagnetic system 3-0 works under the control of the control system 11 to drive the ejector rod 3-05 to switch between the first position and the second position, so that the ejector rod 3-05 drives the movable contact mechanism 4-1 to switch between the closed position and the open position. Obviously, in the circuit breaker of the utility model, the closing position of the operating member 2, the first position of the ejector rod 3-05, the closing position of the moving contact mechanism 4-1, the closing state of the contact system 4 and the closing state of the circuit breaker correspond to each other, and the opening position of the operating member 2, the second position of the ejector rod 3-05, the opening position of the moving contact mechanism 4-1, the opening state of the contact system and the opening state of the circuit breaker correspond to each other. Furthermore, two ends of the ejector rod 3-05 are respectively in transmission fit with the operating piece 2 and the moving contact mechanism 4-1.

Specifically, as shown in fig. 1-2, 6 and 11-12, two ends of the ejector rod 3-05 are respectively connected with the operating member 2 and the moving contact mechanism 4-1 in a transmission manner, one end of the operating member 2 is inserted into the housing 1, and the other end of the operating member protrudes outside the housing 1 to be operated by external force, so that the external force can drive the contact system 4 to be closed and opened (namely, drive the circuit breaker to be closed and opened) through the operating mechanism 3 by pressing and pulling the operating member 2.

Specifically, as shown in fig. 2-8 and 10, the moving contact mechanism 4-1 includes a contact support 4-10 and a moving contact 4-11 carried on the contact support 4-10. Further, the movable contact mechanism 4-1 is rotatably arranged through a contact support 4-10. Further, the moving contact mechanism 4-1 further comprises a contact spring (not shown in the drawing of the specification), the contact support 4-1 is rotatably arranged on the shell 1 through a moving contact shaft 4-12, and the moving contact 4-11 and the contact support 4-10 are rotatably arranged relatively, so that after the moving contact 4-11 and the fixed contact 4-2 are allowed to be closed, the contact support 4-10 can continuously rotate for a certain angle relative to the moving contact 4-11, and the contact spring applies acting force to the moving contact 4-11 to enable the acting force to press the fixed contact 4-2 to ensure reliable contact of the moving contact 4-11 and the fixed contact.

As other embodiments, the movable contact mechanism 4-1 is provided integrally movable, and the movable contact mechanism 4-1 is switched between a closed position and an open position by reciprocating movement to be closed and opened with the stationary contact 4-2.

Further, the moving contact mechanism 4-1 is provided with two groups of moving contacts 4-11 which are arranged in parallel, so that the electric repulsive force between the moving contact and the static contact can be effectively reduced, and the current capacity can be improved.

Further, the operating mechanism 3 further comprises a rear connecting rod 3-2, the rear connecting rod 3-2 is connected with one end of a push rod 3-05 of the electromagnetic system 3-0 and hinged with the contact support 4-11, and the axis of the hinged shaft of the rear connecting rod 3-2 and the contact support 4-11 is arranged at intervals in parallel with the rotation axis of the moving contact mechanism 4-1.

Specifically, the rear connecting rod 3-2 is provided with a rear connecting rod cavity 3-20 and a rear connecting rod jack 3-21, the rear connecting rod jack 3-21 is arranged on the side wall (the side wall is close to the magnetism generating component 3-0m of the magnetic holding system 3-0) of the rear connecting rod cavity 3-20, the rear rod body 3-0510 of the ejector rod 3-05 is inserted into the rear connecting rod jack 3-21, the outer diameter of the rear rod body 3-0510 is matched with the inner diameter of the rear connecting rod jack 3-21, the rear connecting cap 3-0511 of the ejector rod 3-05 is arranged in the rear connecting rod cavity 3-20, the outer diameter of the rear connecting cap 3-0511 is larger than the inner diameter of the rear connecting rod jack 3-21 and the outer diameter of the rear rod body 3-0510, the rear connecting rod 3-2 comprises a first rear connecting rod opening and a second rear connecting rod opening, the first rear connecting rod opening is communicated with the rear connecting rod cavity 3-20, the second rear connecting rod opening is communicated with the rear connecting rod body 3-21, the rear connecting rod body 3-0510 enters the rear connecting rod jack 3-21 through the second rear connecting rod opening, and the rear connecting rod cap 3-21, the outer diameter of the rear connecting cap 3-0511 is larger than the inner diameter of the rear connecting rod cavity 3-21, and the rear connecting rod 3-1 enters the rear connecting rod cavity 3-20 through the first rear connecting rod opening.

Specifically, the rear connecting rod 3-2 is hinged with the contact support 4-11 through a rear connecting shaft 3-32. Further, in the rear link 3-2 and the contact support 4-10, the connecting shaft 3-32 is provided on one side to move synchronously therewith, and the other side is provided with a kidney-shaped hole which is engaged with the rear connecting shaft 3-32. Further, the rear connecting rod 3-2 is provided with a rear connecting rod connecting hole 3-22 for inserting and adapting the rear connecting shaft 3-32, the rear connecting shaft 3-32 is inserted in the rear connecting rod connecting hole 3-22 and moves synchronously with the rear connecting rod 3-2, and the contact support 4-11 is provided with a waist-shaped hole which is a support connecting hole 4-100 for inserting the rear connecting shaft 3-32.

As other embodiments, the ejector rod 3-05 may also be directly hinged to the contact support 4-11, and the detailed connection between the two may be implemented by the prior art, which will not be described herein.

Further, the main circuit structure further comprises a sampling device 7 coupled with the contact system 4 (i.e. coupled with the moving contact mechanism 4-1), the sampling device 7 is used for collecting current signals flowing in the contact system 4 and is connected with the control system 11, and when overload and/or short-circuit current flows in the contact system 4 (i.e. the control system 11 detects the overload and/or short-circuit current through the sampling device 7), the control system 11 controls the electromagnetic system 3-0 to work so as to drive the ejector rod 3-05 to move from the first position to the second position, thereby driving the moving contact mechanism 4-1 to move from the closed position to the open position. In the circuit breaker, the electromagnetic system 3-0 is used as a power mechanism for driving the contact system 4 to be closed and opened and is also used as a mechanism for realizing overload and/or short-circuit protection, compared with the existing circuit breaker, a bimetal element for realizing overload protection and/or an electromagnetic tripping mechanism for realizing short-circuit protection can be omitted, the number of components of the circuit breaker is reduced, the structure of the circuit breaker is simplified, a larger space is provided for the layout of the components of the circuit breaker, and the overall size and specification of the circuit breaker are reduced. In the circuit breaker of the utility model, when overload and short-circuit current flow in the contact system 4, the control system 11 controls the electromagnetic system 3-0 to work to drive the ejector rod 3-05 to move from the first position to the second position, namely, the electromagnetic system 3-0 is used as a mechanism for overload protection and short-circuit protection at the same time.

Specifically, the sampling device 7 is a manganese-copper shunt connected in series with the contact system 4 (i.e. connected in series with the moving contact mechanism 4-1), or the sampling device 7 is a transformer coupled with the contact system 4 (i.e. coupled with the moving contact mechanism 4-1), for example, the transformer can be sleeved on a conductor connected in series with the contact system 4 to realize the coupling with the contact system 4. In the circuit breaker of the present utility model, the sampling device 7 is preferably a manganese-copper shunt.

Further, the main circuit structure further comprises a first terminal 8-0 and a third terminal 5-0, and the first terminal 8-0, the contact system 4 and the third terminal 5-0 are sequentially connected in series. Further, the third terminal 5-0, the fixed contact 4-2, the moving contact mechanism 4-1 and the first terminal 8-0 are sequentially connected in series.

Specifically, the first terminal 8-0 is an incoming line terminal of the main loop structure, the third terminal 5-0 is an outgoing line terminal of the main loop structure, the sampling device 7 is a manganese copper shunt, the third terminal 5-0, the fixed contact 4-2, the moving contact mechanism 4-1, the sampling device 7 and the first terminal 8-0 are sequentially connected in series, or the third terminal 5-0, the sampling device 7, the fixed contact 4-2, the moving contact mechanism 4-1 and the first terminal 8-0 are sequentially connected in series.

Further, the main circuit structure further comprises a connecting conductor 20, and the fixed contact 4-2 is electrically connected with the third terminal 5-0 through the connecting conductor 20.

Further, the main circuit structure further includes a signal terminal 12 connected to the control system 11, and the control system 11 communicates with an external device through the signal terminal 12, for example, the control system 11 transmits data through the signal terminal 12 and receives external control signals (a remote switch-on signal and a remote switch-off signal) through the signal terminal 12.

Further, the circuit breaker of the utility model further comprises a secondary loop structure 9 arranged in the shell 1, wherein the secondary loop structure 9 is a through circuit. By "pass-through circuit" is meant a circuit structure in which there is no operable break point in the circuit (e.g., there is no break point realized by a moving contact and a fixed contact, the break point is closed when the moving contact is closed with the fixed contact, and the break point is opened when the moving contact is opened with the fixed contact) and which is connected to an external circuit, i.e., which can be directly turned on. Further, the secondary loop structure 9 includes a second terminal 8-1, a through conductor and a fourth terminal 5-1 connected in series. Further, the through conductor is a conductive plate or a flexible conductor. It should be noted that the circuit breaker of the present utility model may be configured with only a main circuit structure, and the circuit breaker is a single-phase circuit breaker (i.e., a 1P-type circuit breaker), and the circuit breaker of the present utility model may be configured with both a main circuit structure and a sub-circuit structure, and the circuit breaker is a two-phase circuit breaker (i.e., a 1p+1n-type circuit breaker). In addition, a plurality of circuit breakers of the embodiment can be arranged side by side, and an operating piece of the circuit breaker is in linkage fit with an operating system to realize a two-phase (2P type circuit breaker) or a multi-phase (3P or 4P) circuit breaker.

Specifically, the second terminal 8-1 is an incoming terminal of the secondary loop structure 9, and the fourth terminal 5-1 is an outgoing terminal of the secondary loop structure 9.

As shown in fig. 2 and 6, the control system 11 includes a wiring board 11p.

Further, the control system 11 further includes a first sampling terminal 11-0 connected to the circuit board 11p, where the first sampling terminal 11-0 is electrically connected to the connection conductor 20 to detect a voltage signal, a current signal and an on-off state of the main circuit structure, so as to determine the current state of the circuit breaker according to the present utility model. Further, the connection conductor 20 is a conductive plate, the first sampling terminal 11-0 is disposed on the circuit board 11p, and the conductive plate is in plug-in fit with the first sampling terminal 11-0.

Further, the control system 11 further includes a second sampling terminal 11-1 electrically connected to the circuit board 11p and the through conductor, respectively, for detecting a voltage signal and a current signal of the secondary loop structure. Further, the through conductor is a conductive plate, the second sampling terminal 11-1 is arranged on the circuit board 11p, and the conductive plate is in plug-in fit with the second sampling terminal 11-1.

As shown in fig. 2-10, the electromagnetic system 3-0 is a magnetic latching system.

Further, the magnetic generating assembly 3-0m comprises a coil assembly 3-01, a magnetic yoke 3-03 and a permanent magnet 3-04, wherein the magnetic yoke 3-03 and the permanent magnet 3-04 are arranged around the coil assembly 3-01, the permanent magnet 3-04 is sleeved outside the middle of the coil assembly 3-01 and is positioned between two electromagnetic coils of the coil assembly 3-01, the electromagnetic system 3-0 further comprises a movable iron core 3-02 which is arranged in the middle of the coil assembly 3-01 in a sliding mode, the movable iron core 3-02 is connected with a push rod 3-05 and moves synchronously, two ends of the push rod 3-05 protrude out of two axial sides of the coil assembly 3-01 respectively, the electromagnetic system 3-0 further comprises a first static iron core and a second static iron core which are arranged oppositely along the axial direction of the coil assembly 3-01, when one end of the movable iron core 3-02 is attracted with the first static iron core, the push rod 3-05 is positioned at a first position, when the movable iron core 3-02 is attracted with the second static iron core, the push rod 3-05 is positioned at a second position, and the push rod 3-05 moves reciprocally along the axial direction of the coil assembly 3-01 and is switched between the first position and the second position. Further, the yoke 3-03 has a square frame structure, and the first and second stationary cores are served by a pair of sidewalls of the yoke 3-03. Further, the magnetic yoke 3-03 comprises a magnetic yoke base and a magnetic yoke end plate, wherein the magnetic yoke base is of a U-shaped structure, the opening end of the U-shaped structure of the magnetic yoke base is connected with the magnetic yoke end plate, and the magnetic yoke end plate and the bottom plate of the U-shaped structure of the magnetic yoke base are used as the first static iron core and the second static iron core.

It should be noted that the electromagnetic system 3-0 may also be a prior art magnetic latching system of other types of structures, for example, a prior art magnetic latching system differs from the present embodiment in that it includes two sets of permanent magnets, which are respectively sleeved outside the two axial ends of the coil assembly 3-01, and the electromagnetic coil of the coil assembly 3-01 is located between the two sets of permanent magnets.

Further, the ejector rod 3-05 comprises a front ejector rod 3-050 and a rear ejector rod 3-051, one end of the front ejector rod 3-050 is inserted into the movable iron core 3-02, the other end of the front ejector rod protrudes out of one axial end of the electromagnetic coil and is in transmission connection with the operating piece 2, one end of the rear ejector rod 3-051 is inserted into the movable iron core 3-02, and the other end of the rear ejector rod protrudes out of the other axial end of the electromagnetic coil and is in transmission connection with the movable contact mechanism 4-1.

Specifically, the front ejector rod 3-05 comprises a front rod body 3-0500 and a front connecting cap 3-0501, one end of the front rod body 3-0500 is connected with the front connecting cap 3-0501, the other end of the front rod body is connected with the movable iron core 3-02 (for example, one axial end of the driven iron core 3-02 is inserted into the movable iron core 3-02), the rear ejector rod 3-051 comprises a rear rod body 3-0510 and a rear connecting cap 3-0511, one end of the rear rod body 3-0510 is connected with the rear connecting cap 3-0511, and the other end of the rear rod body is connected with the movable iron core 3-02 (for example, the other axial end of the driven iron core 3-02 is inserted into the movable iron core 3-02). Further, the front rod body 3-0500 and the front connecting cap 3-0501 are of an integral structure or a detachable split structure, and the rear rod body 3-0510 and the rear connecting cap 3-0511 are of an integral structure or a detachable split structure.

As shown in fig. 2, 6 and 11-12, the circuit breaker of the utility model further comprises a first locking piece 14 and a first locking piece return spring 16, wherein the first locking piece 14 is slidably arranged in the shell 1 along the direction d3, the first locking piece return spring 16 acts on the first locking piece 14 to enable the first locking piece 14 to have a trend of moving towards the outside of the shell 1, the first locking protrusion 14-1 of the first locking piece 14 protrudes out of the shell 1, the first locking piece 14 moves towards the inside of the shell 1 when the first locking protrusion 14-1 is extruded by external force (namely, the first locking protrusion 14-1 is driven to move the whole first locking piece 14 towards the inside of the shell 1 when the first locking protrusion 14-1 is extruded by external force), and the circuit breaker moves towards the inside of the shell 1 when the first locking piece 14 is driven by the drawn operating piece 2 in a breaking state, namely, the operating piece 2 is drawn in a breaking position to drive the first locking piece 14 to move towards the inside of the shell 1 when the circuit breaker is in a breaking state.

When the circuit breaker is installed in a circuit breaker installation cabinet (such as a power distribution cabinet, a control cabinet or other electric cabinets) in actual use, the first locking protrusion 14-1 is extruded by the structure of the circuit breaker installation cabinet and moves towards the inside of the shell 1, the appointed position of the circuit breaker installation cabinet is not affected, after the circuit breaker is installed in place in the appointed position, the first locking protrusion 14-1 can be opposite to a first locking hole arranged at the appointed position of the circuit breaker installation cabinet and moves towards the outside of the shell 1 to be inserted into the first locking hole, and therefore the circuit breaker is in limit fit with the circuit breaker installation cabinet, so that the circuit breaker cannot be pulled out of the appointed position of the circuit breaker installation cabinet in a closing state, the personal safety of operators is guaranteed, and the reliability and stability of electricity consumption are guaranteed.

As shown in fig. 5 and 11-12, the circuit breaker of the utility model further comprises a second locking piece 15 rotatably arranged in the shell 1, wherein the second locking piece 15 comprises a second locking protrusion 15-0, when the operating piece 2 moves from the opening position to the closing position, the second locking piece 15 is directly or indirectly driven by the operating piece 2 to rotate forward so as to enable the second locking protrusion 15-0 to move outside the shell 1, when the operating piece 2 moves from the closing position to the opening position, the second locking piece 15 reversely rotates so as to enable the second locking protrusion 15-0 to move inside the shell 1, and when the operating piece 2 moves from the closing position, the operating piece 2 directly or indirectly limits the reverse rotation of the second locking piece 15.

The second locking piece 15 is driven by the operating piece 2 to rotate forward when the operating piece 2 moves from the opening position to the closing position, so that the second locking protrusion 15-0 moves towards the outside of the shell 1, the second locking protrusion 15-0 is used for limiting and matching with the structure of a breaker installation cabinet (such as a power distribution cabinet, a control cabinet or other electric cabinets), and therefore the breaker is prevented from being installed in the breaker installation cabinet in the closing state, the personal safety of an operator is guaranteed, the breaker is installed in the breaker installation cabinet in the opening state and is installed in place, the second locking protrusion 15-0 protruding out of the shell 1 is also used for being opposite to and extending into a second locking hole of the breaker installation cabinet, the second locking protrusion 15-0 is in limiting and matching with the structure of the breaker installation cabinet, and when the operating piece 2 is in the closing position, the front connecting rod 3-1 is prevented from reversely rotating with the second locking piece 15 in a limiting and matching mode, the breaker installation cabinet is prevented from being pulled out in the closing state, the personal safety of the operator is guaranteed, the person is guaranteed to withdraw from the breaker installation cabinet is guaranteed, and the second locking protrusion 15-0 is prevented from moving from the second locking protrusion 15-0 is prevented from moving towards the inside of the shell 1 when the second locking protrusion is installed in the opening position, and the second locking protrusion 15 is not matched with the second locking protrusion 15 is moved towards the inside of the second locking protrusion 15.

Further, the second locking protrusion 15-0 is a square protrusion, so that the condition that the second locking protrusion 15-0 is extruded to damage or deform the second locking member 15 when the operating member 2 is in the closing position and the circuit breaker is directly installed in the circuit breaker installation cabinet is avoided.

Further, when the operating member 2 is moved from the closing position to the opening position, the second locking member 15 is directly or indirectly driven by the operating member 2 to rotate reversely, so that the second locking protrusion 15-0 moves into the housing 1. Further, the second locking member 15 is driven to reversely rotate by the operating member 2 pulled at the opening position, and the first locking member 14 is driven to reversely rotate by the second locking member 15 when the operating member 2 at the opening position is pulled, that is, the operating member 2 simultaneously drives the second locking member 15 to reversely rotate when the operating member 2 is pulled at the opening position, and the second locking member 15 simultaneously drives the first locking member 14 to move inside the housing 1.

As another embodiment, the circuit breaker of the present utility model includes a second locking member return spring acting on the second locking member 15 to cause the second locking member 15 to have a tendency to rotate reversely, and when the operating member 2 moves from the closing position to the opening position, the operating member 2 no longer restricts the second locking member 15 from rotating reversely, and the second locking member return spring drives the second locking member 15 to rotate reversely.

The circuit breaker of the present utility model may be provided with the first locking member 14 and the second locking member 15 at the same time, or may be provided with only the first locking member 14 or the first locking member 15.

As shown in fig. 3-4 and 7-12, the circuit breaker of the utility model further comprises an indicator 13 which is arranged in the middle of the operating member 2 and has a first indication position and a second indication position, the operating member 2 comprises an indication hole 2-1 which is matched with the indicator 13, when the operating member 2 moves to a closing position, the indicator 13 is driven by an indicator driving structure to rotate to the first indication position, and when the operating member 2 moves to a separating position, the indicator 13 is driven by the indicator driving structure to rotate to the second indication position, namely, the first indication position and the second indication position of the indicator 13 respectively correspond to the closing position and the separating position of the operating member 2 and respectively correspond to the closing state and the separating state of the circuit breaker of the utility model. The indicator 13 is arranged in the middle of the operating part 2, which is beneficial to improving the structural compactness of the circuit breaker and reducing the overall required installation space of the circuit breaker.

Further, the indicator 13 comprises an indicator part 13-0, an indicator connecting part 13-1, an indicator mounting part 13-2, a closing driven part 13-30 and a separating brake driven part 13-31 which are sequentially connected, wherein the indicator 13-0 is matched with an indicator hole 2-1 of the operator 2, the indicator 13 is rotatably mounted on the operator 2 through the indicator mounting part 13-2, the closing driven part 13-30 and the separating brake driven part 13-31 are sequentially arranged along the rotation direction of the indicator mounting part 13-2, the indicator driving structure is realized by the shell 1 (for example, a driving protrusion is arranged on the shell 1, the driving protrusion is inserted between the closing driven part 13-30 and the separating brake driven part 13-31), when the operator 2 moves to a closing position, the abutting pressure of the closing driven part 13-0 of the indicator driving structure enables the indicator 13 to rotate to a first indicating position, and when the operator 2 moves to a separating brake position, the separating brake driven part 13-1 enables the indicator 13 to rotate to a second indicating position.

In other embodiments, the indicator 13 is not provided with a closing driven part 13-30 and a separating brake driven part 13-31, but is provided with one indicator driven part only on the indicator mounting part 13-2, the corresponding indicator driving structure comprises two indicator driving protrusions, one indicator driving protrusion is a closing driving protrusion and the other indicator driving protrusion is a separating brake driving protrusion, the indicator driven part is inserted between the two indicator driving protrusions, when the operating member 2 moves to a closing position, the closing driving protrusion presses the indicator driven part to enable the indicator 13 to rotate to a first indicating position, and when the operating member 2 moves to a separating brake position, the separating brake driving protrusion presses the indicator driven part to enable the indicator 13 to rotate to a second indicating position.

As shown in fig. 1, the housing 1 further includes an operating member mounting hole 1-6 into which the operating member 2 is inserted, a first insertion hole 1-20 mated with the first terminal 8-0, a second insertion hole 1-21 mated with the second terminal 8-1, a signal insertion hole 1-3 mated with the signal terminal 12, a third insertion hole 1-50 mated with the third terminal 5-0, and a fourth insertion hole 1-51 mated with the fourth terminal 5-1.

As shown in fig. 1, the casing 1 further includes a signal window 1-4, the circuit breaker further includes an indicating element connected to the control system 11, the indicating element is matched with the signal window 1-4, and is used for indicating the state of the circuit breaker, such as a switching-on and switching-off state, a fault state, a communication state, etc., of the circuit breaker, and the signal window 1-4 and the operating member mounting hole 1-6 are disposed on the same side wall of the casing 1. Further, the indicating element is an indicating lamp.

As shown in fig. 2, 6, 11-12, the housing 1 is further provided with a first opening through which the first locking protrusion 14-1 of the first locking member 14 passes and a second opening through which the second locking protrusion 15-0 of the second locking member 15 passes. Further, the first opening and the second opening are the same opening.

As shown in fig. 1, the housing 1 further includes a mounting guide structure 1-1 for cooperating with a guide structure on a circuit breaker mounting cabinet (e.g., a power distribution cabinet, a control cabinet or other electrical cabinet) when the circuit breaker of the present utility model is installed in the circuit breaker mounting cabinet, so that the circuit breaker of the present utility model is mounted in place in a correct posture. Further, the installation guide structure 1-1 is a guide rib structure.

As shown in fig. 1-2 and 6, one layout of the circuit breaker of the present utility model is shown.

The circuit breaker of the utility model comprises a length direction d2, a width direction d2 and a height direction d3, namely the length direction, the width direction and the height direction of the circuit breaker are respectively a length direction d1, a width direction d2 and a height direction d3, and the length direction d1, the width direction d2 and the height direction d3 are mutually perpendicular. In the length direction d1, the operating member 2 is arranged at one end of the housing 1, the sampling device 7 and the arc extinguishing system 6 are arranged at the other end of the housing 1, the electromagnetic system 3-0 and the contact system 4 are sequentially arranged between the operating member 2 and the arc extinguishing system 6 along the length direction d1, the sampling device 7 and the arc extinguishing system 6 are arranged side by side along the height direction d3, and at least part of the circuit board 11p of the control system 11 and the electromagnetic system 3-0 are arranged side by side along the height direction d 3.

The circuit breaker disclosed by the utility model is compact and reasonable in structure by adopting the layout, is beneficial to reducing the overall specification and size of the circuit breaker, and accords with the development trend of miniaturization of the circuit breaker.

Further, the operating member 2, the electromagnetic system 3-0 and the sampling device 7 are arranged on the same side of the arc extinguishing system 6 in the height direction d3, that is, the operating member 2, the electromagnetic system 3-0 and the sampling device 7 are respectively on the same side of the arc extinguishing system 6 in the height direction d3, and the operating member 2, the electromagnetic system 3-0 and the sampling device 7 are arranged on the same side in the housing 1. The above arrangement facilitates the wiring of the control system 11 with the electromagnetic system 3-0 and the coupling of the sampling device 7 with the contact system 4, further simplifying the internal layout of the circuit breaker of the utility model.

Further, the circuit board 11p and the contact system 4 and/or the arc extinguishing system 6 are arranged side by side along the width direction d2, and in the circuit breaker of the utility model, the circuit board 11p and the contact system 4 and the arc extinguishing system 6 are arranged side by side along the width direction d 2. It should be noted that whether the circuit board 11p is arranged side by side with the contact system 4 and the arc extinguishing system 6 along the width direction d2 may be adjusted according to the specific size of the circuit board 11 p.

Specifically, as shown in fig. 1-2 and 6, the vertical direction of fig. 1 is a length direction d1, the inside and outside direction of fig. 1 is a width direction d2, and the left and right direction of fig. 1 is a height direction d3, the operating element 2 is disposed at the upper end of the housing 1, the sampling device 7 and the arc extinguishing system 6 are disposed at the lower end of the housing 1, the sampling device 7 and the arc extinguishing system 6 are disposed side by side in the left and right direction, and at least part of the circuit board 11p of the control system 11 and the electromagnetic system 3-0 are disposed side by side in the left and right direction. The operation piece 2, the electromagnetic system 3-0 and the sampling device 7 are all arranged on the right side of the arc extinguishing system 6, namely, the electromagnetic system 3-0 is positioned on the right side of a circuit board 11p of the control system 11 in the left-right direction, the sampling device 7 is positioned on the right side of the arc extinguishing system 6, and the sampling piece 2, the electromagnetic system 3-0 and the sampling device 7 are all arranged on the right side in the shell 1.

As a further embodiment, the operating element 2, the electromagnetic system 3-0 and the sampling device 7 are all arranged on the left side of the arc extinguishing system 6, i.e. the components inside the circuit breaker are arranged in a mirror image manner to the present embodiment.

Further, the first terminal 8-0 and the second terminal 5-0 are respectively disposed at two ends of the housing 1 along the length direction d1, the third terminal 5-0 and the operating member 2 are disposed side by side along the direction d3, the electromagnetic system 3-0, the arc extinguishing system 6, the sampling device 7 and the control system 11 are located between the operating member 2 and the first terminal 8-0 along the length direction d1, that is, the operating member 2 and the first terminal 8-0 are located at two ends of the housing 1 with the farthest distance along the length direction d1, and the operating member 2, the electromagnetic system 3-0, the sampling device 7 and the first terminal 8-0 are located at the same side of the third terminal 5-0 and the arc extinguishing system 6 along the height direction d 3.

Specifically, as shown in fig. 2 and 6, the operating element 2 and the third terminal 5-0 are both disposed at the uppermost end of the housing 1, the third terminal 5-0 is disposed at the left side of the operating element 2, the first terminal 8-0 is disposed at the lowermost end of the housing 1, the electromagnetic system 3-0 and the sampling device 7 are disposed between the operating element 2 and the first terminal 8-0 from top to bottom, and the third terminal 5-0, the control system 11 and the arc extinguishing system 6 are sequentially disposed from top to bottom.

As other embodiments, in the length direction d1, the first terminal 8-0 and the second terminal 5-1 are disposed at one end of the circuit breaker, and the operating member 2 is disposed at the other end of the circuit breaker, that is, the first terminal 8-0 and the second terminal 5-1 are disposed at the same end of the circuit breaker. Further, the first terminals 8-0 and the second terminals 5-1 are arranged side by side at intervals along the height direction d 3.

Further, the third jack 1-50, the fourth jack 1-51, the signal window 1-4 and the operating element mounting hole 1-6 are all arranged on the same side wall of the shell 1, the third jack 1-50, the fourth jack 1-51 and the signal window 1-4 are arranged in a finished product shape, the fourth jack 1-51 is farthest from the operating element jack 1-6 in the direction d3, the signal window 1-4 is nearest to the operating element jack 1-6, and the fourth jack 1-51 and the signal window 1-4 are positioned on the same side of the third jack 1-50 in the width direction d 2.

Furthermore, the connection conductor 20 of the main circuit structure is arranged side by side with the circuit board 11p of the control system 11 along the width direction d2, the first sampling terminal 11-0 and the connection conductor 20 are positioned on the same side of the circuit board 11p, the first sampling terminal 11-0, the connection conductor 20 and the electromagnetic system 3-0 are arranged side by side along the height direction d3, the layout design is beneficial to reducing the height dimension of the circuit breaker, the thickness of the circuit board 11p is limited, the space of the shell 1 in the width direction d2 is fully utilized by side of the connection conductor 20 and the circuit board 11p, and the space of the shell 1 in the height direction d3 is fully utilized by side of the first sampling terminal 11-0, the connection conductor 20 and the electromagnetic system 3-0 along the height direction d 3.

Further, the second terminal 8-1 of the secondary circuit structure 9 and the first terminal 8-0 of the primary circuit structure are arranged side by side along the height direction d3, and the second terminal 8-1 and the first terminal 8-0 are arranged at the same end of the housing 1 along the direction d 1. Further, the signal terminal 12 of the main circuit structure is located between the first terminal 8-0 and the second terminal 8-1 in the direction d3, and the signal terminal 12, the first terminal 8-0 and the second terminal 8-1 are disposed at the same end of the housing 1 in the length direction d 1. Further, the first jack 1-20, the signal jack 1-3 and the second jack 1-21 are sequentially arranged at intervals on one end of the housing 1 in the height direction d 3.

Further, the electromagnetic system 3-0, the contact system 4, the arc extinguishing system 6 and the sampling device 7 are arranged side by side with the through conductor of the secondary loop structure 9 along the height direction d3, that is, the electromagnetic system 3-0, the contact system 4, the arc extinguishing system 6 and the sampling device 7 are arranged on the same side of the through conductor along the height direction d 3.

Further, at least a part of the through conductor is arranged side by side with the circuit board 11p of the control system 11 in the width direction d2 and the part is also in plug-in fit with the second sampling terminal 11-1, and the second sampling terminal 11-1 is arranged side by side with the electromagnetic system 3-0 in the height direction d 3.

Further, the rotation plane of the indicator 13 is parallel to the length direction d1 and perpendicular to the width direction d2 and the height direction d3.

Further, the first locking piece 14 and the third terminal 5-0 are respectively arranged at both ends of the housing 1 in the height direction d 3.

Further, the second locking member 15 and the third terminal 5-0 are respectively disposed at both ends of the housing 1 in the height direction d 3.

Further, in the circuit breaker of the present utility model, when the first locking member 14 and the second locking member 15 are provided at the same time, the first locking member 14 and the second locking member 15 are provided side by side in the width direction d 2.

Further, the first opening and the second opening are provided on the right side wall of the housing 1, and the installation guide structure 1-1 is provided on the left side wall of the housing 1.

As shown in FIG. 1, the length direction, width direction and height direction of the shell 1 are the same as the length direction d1, width direction d2 and height direction d3 of the circuit breaker, the length a of the shell 1 is 100-150 mm, the width b is 10-60 mm, and the height c is 38-45 mm. The dimension of the height c of the shell 1 is the module dimension of the circuit breaker of the utility model. Further, the width b is 10, 15, 20, 25, 30, 60mm. Further, the rated current is not more than 32A when the width b of the shell 1 is 10mm, the rated current is not more than 63 or 80A when the width b of the shell 1 is 15, 20 or 25mm, the rated current is not more than 125A when the width b of the shell 1 is 30mm, and the rated current is not more than 250A when the width b of the shell 1 is 60mm. According to the circuit breaker, the width b of the shell 1 can be adjusted according to actual needs, so that the number of the moving contacts 4-11 and/or the fixed contacts 4-2 can be correspondingly increased along the width direction of the shell 1, and/or the size of the moving contacts 4-11 and/or the fixed contacts 4-2 along the width direction of the shell 1 can be increased, so that the current carrying cross section can be increased, and the current carrying capacity of the circuit breaker is improved. Further, the length a of the housing 1 is the distance between the outer sides of the two side walls of the housing 1 perpendicular to the length direction d1, the width of the housing 1 is the distance between the outer sides of the two side walls of the housing 1 perpendicular to the width direction d2, and the height of the housing 1 is the distance between the outer sides of the two side walls of the housing 1 perpendicular to the height direction d 3.

As shown in fig. 2-10, the circuit breaker of the present utility model further comprises an operating system comprising an operating member 2, an operating mechanism 3, a moving contact mechanism 4-1, a sampling device 7 and a control system 11. Further, the operating system also comprises an indicator 13.

As shown in fig. 2-5, is a first embodiment of the operating system.

The operating system of this embodiment further includes a trigger mechanism 17 connected to the control system 11, where the trigger mechanism 17 is triggered by the operating member 2 moving to the closing position to output a first closing signal to the control system 11, after receiving the first closing signal, the control system 11 controls the electromagnetic system 3-0 to operate so that the ejector rod 3-05 drives the moving contact mechanism 4-1 to move to the closing position, that is, when the operating member 2 is operated by an external force to perform closing operation (that is, when the circuit breaker of the present utility model is closed), the operating member 2 moves from the opening position to the closing position to trigger the trigger mechanism 17, and the trigger mechanism 17 outputs the first closing signal to the control system 11, so that the control system 11 controls the electromagnetic system 3-0 to operate so that the ejector rod 3-05 moves from the second position to the first position, and the ejector rod 3-05 drives the moving contact mechanism 4-1 to move from the opening position to the closing position. Further, the ejector rod 3-05 remains stationary during the movement of the operating member 2 to the closing position, that is, during the movement of the operating member 2 from the opening position to the closing position, the ejector rod 3-05 does not move with the operating member 2, but remains in the second position, and the moving contact mechanism 4-1 remains in the opening position. Further, the triggering mechanism 17 is a micro switch.

Further, two ends of the ejector rod 3-05 are respectively connected with the operating piece 2 and the moving contact mechanism 4-1 in a transmission way, the ejector rod 3-05 is driven by the operating piece 2 moving towards the opening position to move, so that the moving contact mechanism 4-1 is driven to move towards the opening position, namely, the operating piece 2 is driven to move towards the opening position from the closing position, the ejector rod 3-05 is driven to move towards the second position from the first position, the ejector rod 3-05 simultaneously drives the moving contact mechanism 4-1 to move towards the opening position from the closing position, and therefore the breaker of the utility model is opened, in other words, when the breaker of the utility model is opened, the operating piece 2 directly drives the ejector rod 3-05 to move, and the moving contact mechanism 4-1 is driven to move towards the opening position by the ejector rod 3-05.

In the operating system of this embodiment, when the operating element 2 moves from the opening position to the closing position to perform the closing operation, the electromagnetic coil of the electromagnetic system 3-0 participates therein, and when the operating element 2 moves from the closing position to perform the opening operation, the electromagnetic coil of the electromagnetic system 3-0 does not participate therein.

Specifically, as shown in fig. 3-5, the operating member 2 includes an operating member main body 2b and an operating member connecting portion 2c for external force operation, one end of the ejector rod 3-05 is matched with the operating member connecting portion 2c and is disposed in a manner of moving relative to the operating member connecting portion 2c along the moving direction of the operating member 2, the operating member main body 2b is slidably disposed on the housing 1, and one end of the operating member main body protrudes outside the housing 1 for external force operation (i.e., one end of the operating member 2 protrudes outside the housing 1 for external force operation). Further, the operating part connecting part 2c comprises a connecting part cavity 2-1c, the ejector rod 3-05 comprises a front rod body 3-0500 and a front connecting cap 3-0501, the front connecting cap 3-0501 comprises a front cap peak, the front cap peak protrudes out of one side of the front rod body 3-0500 along the radial direction of the front rod body 3-0500, the front connecting cap 3-0501 is movably arranged in the connecting part cavity 2-1c, the side wall (an operating part separating wall) of the connecting part cavity 2-1c is in transmission fit with the front cap peak, and when the operating part 2 moves from a closing position to a separating position, the ejector rod 3-05 is driven to move so as to drive the moving contact mechanism 4-1 to move through the ejector rod 3-05, so that the contact system 4 is disconnected. Further, the operation piece connecting part 2c further comprises a connecting part jack 2-0c arranged on the connecting part cavity 2-1c, the outer diameter of the front connecting cap 3-0501 is larger than that of the front rod body 3-0500, the front rod body 3-0500 is inserted into the connecting part jack 2-0c in a sliding mode, the outer diameter of the front rod body 3-0500 is matched with the inner diameter of the connecting part jack 2-0c, and the outer diameter of the front connecting cap 3-0501 is larger than the inner diameter of the connecting part jack 2-0c and is movably arranged in the connecting part cavity 2-1 c. Further, the operation piece connecting portion 2c includes a first connecting portion opening and a second connecting portion opening provided on one side thereof, respectively, the first connecting portion opening being provided on one radial side of the connecting portion insertion hole 2-0c and communicating therewith, the second connecting portion opening communicating with the connecting portion cavity 2-1c, the front connecting cap 3-0501 being introduced into the connecting portion cavity 2-1c from the second connecting portion opening and the front rod body 3-0500 being introduced into the connecting portion insertion hole 2-0c from the first connecting portion opening. Further, the operation member connection portion 2c is a frame structure, and includes a connection portion first edge and a connection portion second edge, the connection portion first edge is connected with the operation member main body 2b, the connection portion jack 2-0c is disposed on the connection portion second edge, and the connection portion cavity 2-1c is located in the middle of the frame structure of the operation member connection portion 2 c. Further, the operating element 2 further includes an operating element engaging portion 2p connected to the operating element main body 2b and disposed parallel to the operating element connecting portion 2c, and the operating element return spring 18 is a compression spring and disposed parallel to the operating element connecting portion 2c, and has one end engaged with the operating element engaging portion 2p and the other end fixed (e.g., fixed to the housing 1).

As other embodiments, the operation member connecting portion 2c is an L-shaped structure, and includes a connecting portion vertical arm and a connecting portion cross arm, one end of the connecting portion vertical arm is connected with the operation member main body 2b, and the other end of the connecting portion vertical arm is connected with the connecting portion cross arm in a bending manner, the connecting portion vertical arm, the connecting portion cross arm and the operation member main body 2b enclose a connecting portion cavity 2c, and the connecting portion cross arm is in transmission fit with a front cap peak of the front connecting cap 3-0501. Further, the connecting part cross arm is provided with connecting part jacks 2-0c. Further, the connecting portion jack 2-0c is arranged at the free end of the connecting portion cross arm, and the front connecting cap 3-0501 and the front rod body 3-0500 respectively enter the connecting portion cavity 2-1c and the connecting portion jack 2-0c from the direction opposite to the vertical arm of the connecting portion.

As other embodiments, the operating member connecting part 2c is of an L-shaped structure and comprises a connecting part vertical arm and a connecting part cross arm, one end of the connecting part vertical arm is connected with the operating member 2b, the other end of the connecting part vertical arm is connected with the connecting part cross arm in a bending way, the connecting rod 3-05 is provided with a connecting rod kidney-shaped hole, the connecting part cross arm is movably inserted into the connecting part kidney-shaped hole, and when the operating member 2 moves from the opening position to the closing position, the connecting part cross arm moves in the connecting rod kidney-shaped hole, and the connecting rod 3-05 keeps stationary.

Further, the operating element connecting portion 2c is also used for triggering the triggering mechanism 17. Further, the trigger mechanism 17 and the operating member return spring 18 are disposed on both sides of the operating member connecting portion 2c in the width direction d2, respectively.

As other embodiments, the operating system further comprises another triggering mechanism, namely a brake-separating triggering mechanism, wherein the brake-separating triggering mechanism is also connected with the control system 11, the ejector rod 3-05 is kept static in the process of moving from the closing position to the brake-separating position of the operating piece 2, the brake-separating triggering mechanism is triggered when the operating piece 2 moves to the brake-separating position, the brake-separating triggering mechanism sends a first brake-separating signal to the control system 11, the control system 11 receives the first brake-separating signal and then controls the electromagnetic system 3-0 to work, the electromagnetic system 3-0 drives the ejector rod 3-05 to move from the first position to the second position, and the ejector rod 3-05 drives the moving contact mechanism 4-1 to move from the closing position to the opening position so as to be disconnected with the fixed contact 4-2.

Further, the operating mechanism 3 further includes a front link 3-1, the front link 3-1 is connected to the operating member 2 and is disposed to move synchronously, and the front link 3-1 has a structure similar to the operating member connecting portion 2c of the operating member 2 and is connected to the front connecting cap 3-0501 and the front rod body 3-0500 of the jack 3-0. Further, the front connecting rod 3-1 and the operating member 2 are of a detachable split type structure or an integral type structure.

As shown in fig. 1-5, a first embodiment of the circuit breaker of the present utility model includes the operating system of the first embodiment.

As shown in fig. 5, when the circuit breaker of the present embodiment is switched on, the operating element body 2b of the operating element 2 is operated (pressed) by an external force to drive the operating element 2 to move from the switching-off position to the switching-on position, and during the process of moving the operating element 2 from the switching-off position to the switching-on position, the ejector rod 3-05 is kept stationary (as shown in fig. 5 (a) -5 (b)), when the operating element 2 moves to the switching-on position (as shown in fig. 5 (b)), the triggering mechanism 17 is triggered, the triggering mechanism 17 sends a first switching-on signal to the control system 11, after the control system 11 receives the first switching-on signal, the electromagnetic system 3-0 is controlled to operate, and the electromagnetic system 3-0 drives the ejector rod 3-05 to move from the second position to the first position (as shown in fig. 5 (b) -5 (c)), and simultaneously drives the moving contact mechanism 4-1 to move from the switching-off position to the switching-on position to close with the fixed contact 4-2 (as shown in fig. 5 (b) -5 (c).

As shown in fig. 5, fig. 5 (c) to 5 (a) show a breaking process of the circuit breaker of the present embodiment, when the circuit breaker of the present embodiment breaks a break, the operating member main body 2b is operated (pulled) by an external force to drive the operating member 2 to move from a closing position to a breaking position, the operating member 2 simultaneously drives the ejector rod 3-05 to move from a first position to a second position (the ejector rod 3-05 moves from the first position to the second position by the second edge of the connecting portion pressing the front connecting cap 3-0501 of the ejector rod 3-05 by the connecting portion 2 c), and the ejector rod 3-05 simultaneously drives the moving contact mechanism 4-1 to move from the closing position to the opening position to break from the fixed contact 4-2.

The circuit breaker of this embodiment includes a first locking mechanism including a first locking member 14 and a first locking member return spring 16. Further, the circuit breaker of the present embodiment further includes an unlocking mechanism 19, where the unlocking mechanism 19 is an unlocking lever, and one end of the unlocking lever is in transmission fit (direct or indirect transmission fit) with the operating member 2 and the other end of the unlocking lever is in transmission fit with the first locking member 14. In particular. One end of the unlocking rod (front end of the unlocking rod) is abutted against the operating member 2 (namely, the front end of the unlocking rod is in direct transmission fit with the operating member 2), the middle part of the unlocking rod is movably abutted against an abutting protrusion of the shell 1 and is rotationally arranged by taking the abutting protrusion as a pivot, the other end of the unlocking rod (rear end of the unlocking rod) is hinged with the first locking member 14, and when the operating member 2 is pulled at the opening position, the front end of the unlocking rod is abutted and pressed to drive the unlocking rod to rotate by taking the abutting protrusion as the pivot, and the rear end of the unlocking rod drives the first locking member 14 to move towards the inside of the shell 1.

As other embodiments, one end of the unlocking lever (front end of the unlocking lever) abuts against the indicator 13 (that is, the front end of the unlocking lever is in indirect transmission fit with the operating member 2 through the indicator 13), the middle part of the unlocking lever is movably abutted against the abutting protrusion of the housing 1 and is rotatably arranged by taking the abutting protrusion as a pivot, the other end of the unlocking lever (rear end of the unlocking lever) is hinged with the first locking member 14, and when the operating member 2 is pulled at the opening position, the indicator 13 abuts against the front end of the unlocking lever to drive the unlocking lever to rotate by taking the abutting protrusion as the pivot, and the rear end of the unlocking lever drives the first locking member 14 to move towards the interior of the housing 1.

In other embodiments, the front end of the unlocking lever is hinged to the operating member 2, the rear end of the unlocking lever is hinged to the first locking member 14, and the middle of the unlocking lever abuts against the abutting protrusion, when the operating member 2 is pulled at the opening position, the operating member 2 drives the unlocking lever to move through the front end of the unlocking lever, and simultaneously enables the unlocking lever to rotate with the abutting protrusion as a pivot, and the rear end of the unlocking lever drives the first locking member 14 to move towards the inside of the housing 1.

The circuit breaker of the embodiment can further comprise a second locking mechanism, the second locking mechanism comprises a second locking piece 15, when the circuit breaker of the embodiment is closed, the second locking piece 15 is directly driven by the operating piece 2 to rotate forward, so that a second locking protrusion 15-0 of the second locking piece 15 protrudes out of the shell 1, when the circuit breaker of the embodiment is opened, the second locking piece 15 is directly driven by the operating piece 2 to rotate reversely, so that the second locking protrusion 15-0 moves into the shell 1, and when the circuit breaker of the embodiment is closed, the operating piece 2 is directly in limit fit with the second locking piece 15, so that the second locking piece 15 is limited to rotate reversely. Further, when the circuit breaker of the present embodiment is closed, the second locking member front arm 15-3 of the second locking member 15 is directly driven by the operating member 2 to rotate the second locking member 15 in the forward direction. Further, in the circuit breaker of the present embodiment, the second locking member 15 is directly driven by the operating member 2 pulled at the opening position to reversely rotate, and the first locking member 14 is driven by the reversely rotating second locking member 15 to move toward the inside of the housing 1, that is, in the circuit breaker of the present embodiment, when the operating member 2 is pulled at the opening position in the opening state, the operating member 2 simultaneously drives the second locking member 15 to reversely rotate, and the second locking member 15 simultaneously drives the first locking member 14 to move toward the inside of the housing 1.

Further, when the operating member 2 is in the opening position, a free stroke exists between the operating member 2 and the front connecting cap 3-0501 of the ejector rod 3-05, so that the operating member 2 is allowed to move outside the housing 1 relative to the ejector rod 3-05, and the first locking member 14 can be driven to move inside the housing 1 by the unlocking mechanism 9 or the second locking member 15 in the opening position. Specifically, when the operating member 2 is in the opening position, a free stroke exists between the opening wall of the operating member 2 and the front connecting cap 3-0501.

As shown in fig. 6-10, is a second embodiment of the operating system.

In the operating system of the embodiment, two ends of the ejector rod 3-05 of the electromagnetic system 3-0 are respectively connected with the operating piece 2 and the moving contact mechanism 4-1 in a transmission way, the operating piece 2 is switched between a closing position and a separating position, and the moving contact mechanism 4-1 is driven by the ejector rod 3-05 to be switched between a closing position and an opening position. That is, when the operating member 2 moves from the opening position to the closing position, the ejector rod 3-05 is driven by the operating member 2 and simultaneously moves from the second position to the first position, the moving contact mechanism 4-1 is driven by the ejector rod 3-05 and simultaneously moves from the opening position to the closing position and is closed with the fixed contact 4-2, and when the operating member 2 moves from the closing position to the opening position, the ejector rod 3-05 is driven by the operating member 2 and simultaneously moves from the first position to the second position, and the moving contact mechanism 4-1 is driven by the ejector rod 3-05 and simultaneously moves from the closing position to the opening position and is disconnected with the fixed contact 4-2.

Further, the operating mechanism 3 further comprises a front connecting rod 3-1, and the front connecting rod 3-1 is connected with the operating piece 2 and synchronously moves. Further, the front connecting rod 3-1 comprises a front connecting rod driving part 3-11 and a front connecting rod connecting part 3-12, the front connecting rod connecting part 3-12 is used for being connected with the operating piece 2, and the front connecting rod driving part 3-11 is used for being in transmission connection with the ejector rod 3-05. Further, when the operating member 2 is in the opening position, a free stroke is provided between the front connecting rod 3-1 and the ejector rod 3-05, so that the front connecting rod 3-1 is allowed to move towards the outside of the housing 1 relative to the ejector rod 3-05 under the driving of the operating member 2.

The front connecting rod driving part 3-11 comprises a front connecting rod jack 3-111 and a front connecting rod cavity 3-110, the ejector rod 3-05 comprises a front rod body 3-0500 and a front connecting cap 3-0501, the outer diameter of the front connecting cap 3-0501 is larger than that of the front rod body 3-0500, the front rod body 3-0500 is slidably inserted into the front connecting rod jack 3-111, the outer diameter of the front rod body 3-0500 is matched with the inner diameter of the front connecting rod jack 3-111, the front connecting cap 3-0501 is arranged in the front connecting rod cavity 3-110, the outer diameter of the front connecting cap 3-0501 is larger than that of the front connecting rod jack 3-111, the front connecting rod driving part 3-11 comprises front connecting rod closing walls and front connecting rod opening walls which are opposite to each other and are respectively positioned on two sides of the front connecting rod cavity 3-110, when the front connecting rod body 3-0501 is moved from the opening position to the opening position, the front connecting cap 3-0501 is pressed by the front connecting rod closing walls, the front connecting rod 3-05 is driven by the front connecting rod 3-05 to the second connecting rod opening position, when the front connecting rod 2 is pushed by the opening position, the front connecting rod 2 is freely, and the front connecting rod opening position is locked by the front connecting rod opening part 2 is opened by the front connecting rod 1, and the front connecting rod opening part 2 is freely, and the front connecting rod opening part is opened by the front connecting rod 2, and the front connecting rod opening part 2, and the front connecting rod opening part is freely, and the front connecting part is opened by the front connecting rod 2 and the front connecting rod opening part 2 and the front connecting part and the front connecting rod 2. Further, the front connecting rod driving part 3-11 further comprises a first driving part opening and a second driving part opening which are respectively arranged on one side of the front connecting rod driving part, the first driving part opening is communicated with the front connecting rod cavity 3-110, the second driving part opening is communicated with the front connecting rod inserting hole 3-111 and is positioned on one radial side of the front connecting rod inserting hole 3-111, the front connecting rod cap 3-0501 enters the front connecting rod cavity 3-110 through the first driving part opening, and the front rod body 3-0500 enters the front connecting rod inserting hole 3-111 through the second driving part opening.

Specifically, the front link connecting portions 3 to 12 include a pair of front link connecting walls, which are respectively arranged on both sides of the operating member 2 and connected thereto. Further, the two front connecting rod connecting walls are connected with the operating piece 2 through a front connecting shaft 3-31 and are respectively positioned at two sides of two side walls of the installation cavity 2-2 of the operating piece 2, the front connecting shaft 3-31 penetrates through the indicator piece installation part 13-2 of the indicator piece 13 to be in rotating fit with the indicator piece, namely, the indicator piece 13 is rotatably arranged on the operating piece 2 through the front connecting shaft 3-31, the two side walls of the installation cavity 2-2 are respectively provided with an operating piece shaft hole 2-4 for inserting the front connecting shaft 3-31, and the front connecting rod connecting walls are provided with front connecting rod connecting holes 3-1200 for inserting the front connecting shaft 3-31.

As shown in fig. 1, 6-12, a second embodiment of the circuit breaker of the present utility model includes the operating system of the second embodiment.

When the circuit breaker of the embodiment is switched on, the operating element main body 2b of the operating element 2 is operated (pressed) by external force to drive the operating element 2 to move from the switching-off position to the switching-on position, the operating element 2 drives the ejector rod 3-05 to move from the second position to the first position through the front connecting rod 3-1, and the ejector rod 3-05 drives the moving contact mechanism 4-1 to move from the switching-off position to the switching-on position to be closed with the fixed contact 4-2.

Further, the operating member 2 and the front connecting rod 3-1 are in a detachable split structure or an integral structure.

When the circuit breaker of the embodiment is opened, the operating member main body 2b is operated (pulled) by external force to drive the operating member 2 to move from the closing position to the opening position, the operating member 2 drives the ejector rod 3-05 to move from the first position to the second position through the front connecting rod 3-1, and the ejector rod 3-05 drives the moving contact mechanism 4-1 to move from the closing position to the opening position to be disconnected with the fixed contact 4-2.

In the circuit breaker of the present embodiment, when the operating member 2 performs the closing operation and the opening operation, the electromagnetic coil of the electromagnetic system 3-0 is not involved therein.

The circuit breaker of the present embodiment includes a first locking mechanism including a first locking member 14 and a first locking member return spring 16, and a second locking mechanism including a second locking member 15. Further, when the circuit breaker of the present embodiment is switched on, the second locking member 15 is driven by the front connecting rod 3-1 (the front connecting rod 3-1 and the operating member 2 are synchronously moved and arranged), the second locking member 15 is driven by the front connecting rod 3-1, that is, indirectly driven by the operating member 2) to rotate forward, so that the second locking protrusion 15-0 of the second locking member 15 protrudes outside the casing 1, when the circuit breaker of the present embodiment is switched off, the second locking member 15 is driven by the front connecting rod 3-1 to rotate reversely, so that the second locking protrusion 15-0 moves inside the casing 1, and when the circuit breaker of the present embodiment is switched on, the front connecting rod 3-1 and the second locking member 15 are in limit fit to limit the second locking member 15 to rotate reversely. Further, when the circuit breaker of the present embodiment is closed, the second locking member front arm 15-3 of the second locking member 15 is driven by the front link 3-1 to rotate the second locking member 15 forward. Further, in the circuit breaker of the embodiment, the second locking member 15 is driven by the operating member 2 pulled at the opening position to reversely rotate, and the first locking member 14 is driven by the reversely rotating second locking member 15 to move towards the inside of the casing 1, that is, in the circuit breaker of the embodiment, when the operating member 2 is pulled at the opening position in the opening state, the operating member 2 simultaneously drives the second locking member 15 to reversely rotate, and the second locking member 15 simultaneously drives the first locking member 14 to move towards the inside of the casing 1, and the operating member 2 can simultaneously unlock the first locking member 14 and the second locking member 15, thereby being beneficial to improving the operating efficiency and simplifying the structure of the circuit breaker.

Specifically, the second locking member 15 further includes a second locking member mounting portion 15-2 and a second locking member front arm 15-3, the second locking member 15 is rotatably disposed on the housing 1 through the second locking member mounting portion 15-2, one end of the second locking member front arm 15-3 is connected to the second locking member mounting portion 15-2, and the other end is provided with a second locking member protrusion 15-0, when the circuit breaker of the embodiment is closed, the second locking member front arm 15-3 is driven by the front link 3-1 to make the second locking member 15 rotate forward. Further, the second locking member 15 further includes a second locking member engaging portion 15-4 disposed on the second locking member front arm 15-3, the second locking member engaging portion 15-4 and the second locking member protrusion 15-0 are disposed on two sides of the second locking member front arm 15-3, respectively, and when the circuit breaker is closed, the second locking member engaging portion 15-4 is pressed by the front link 3-1 to make the second locking member 15 rotate forward. Further, the second locking piece matching part 15-4 comprises a matching part transition surface 15-41 and a matching part limiting surface 15-40 which are connected in a bending way, and the front connecting rod 3-1 comprises a front connecting rod first transition surface 3-121 which are connected in sequence, The circuit breaker comprises a front connecting rod limiting surface 3-122 and a front connecting rod second transition surface 3-123, wherein the front connecting rod first transition surface 3-121 and the front connecting rod second transition surface 3-123 are respectively connected with the front connecting rod limiting surface 3-122 in a bending way, and are bent towards the same side (the side far away from the second locking piece 15) of the front connecting rod limiting surface 3-122, the matching part limiting surface 15-40 abuts against the front connecting rod limiting surface 3-122 to prevent the second locking piece 15 from rotating reversely, the matching part limiting surface 15-40 and the front connecting rod limiting surface 3-122 are parallel to the moving direction of the front connecting rod 3-1, when the circuit breaker in the embodiment pulls the operating piece 2, the front connecting rod second transition surface 3-123 and the front connecting rod limiting surface 3-122 are sequentially contacted with the free end of the front arm 15-3 of the second locking piece to drive the second locking piece 15-3 to rotate reversely, the front connecting rod limiting surface 3-122 is in limit fit with the free end of the front arm 15-3 of the second locking piece to prevent the second locking piece 15 from rotating reversely, and the first transition surface 15-40 and the front connecting rod limiting surface 3-122 of the embodiment are matched with the front connecting rod limiting surface 3-40 and the front connecting rod limiting surface 15-3-41 in turn when the circuit breaker is pulled in the opening state. Further, the second locking member 15 further includes a second locking member rear arm 15-1, one end of the second locking member rear arm 15-1 is connected to the second locking member mounting portion 15-2 and the other end is in driving engagement with the front link 3-1. Further, the second locking member front arm 15-3 and the second locking member rear arm 15-1 are arranged in a V-shape, and the included angle between them is an obtuse angle, and the opening of the obtuse angle faces the operating member 2. Further, the first locking member 14 includes a first locking member driven portion 14-2, the first locking member driven portion 14-2 is pressed by the second locking member rear arm 15-1 of the second locking member 15 that rotates reversely to drive the first locking member 14 to move toward the inside of the housing 1, that is, in the circuit breaker of the embodiment, when the operating member 2 is in the opening position and in the opening state, the operating member 2 is pulled by an external force to move toward the outside of the housing 1, the operating member 2 simultaneously drives the second locking member 15 to rotate reversely, and the second locking member 15 simultaneously presses the first locking member driven portion 14-2 by the second locking member rear arm 15-1 to drive the first locking member 14 to move toward the inside of the housing 1. Further, one end of the first locking member 14 is a first locking member protrusion 14-1, and a first locking member driven portion 14-2 is disposed at one side of the other end, the first locking member driven portion 14-2 is a protruding rib, and the protruding direction of the protruding rib is perpendicular to the sliding direction of the first locking member 14 and the same as the rotation axis of the second locking member 15.

The following is a third embodiment of the circuit breaker of the present utility model.

The circuit breaker is provided with two trigger mechanisms, one trigger mechanism is a closing trigger mechanism and the other trigger mechanism is a separating brake trigger mechanism, one electromagnetic coil of the electromagnetic system 3-0 is powered on when the operating piece 2 moves to the separating brake position or when the operating piece 2 moves to the separating brake position, the electromagnetic system 3-0 drives the ejector rod 3-05 to move from the first position to the second position, the ejector rod 3-05 simultaneously drives the movable contact mechanism 4-1 to move from the closing position to the opening position, the operating piece 2 is powered on when the operating piece 2 moves to the closing position or is implemented when the operating piece moves to the closing position, the other electromagnetic coil of the electromagnetic system 3-0 is powered on when the operating piece 2 triggers the closing trigger mechanism to enable the other electromagnetic coil of the electromagnetic system 3-0 to move from the second position to the first position, the ejector rod 3-05 simultaneously drives the movable contact mechanism 4-1 to move from the opening position to the closing position, and the circuit breaker is not influenced by the movement of the operating piece 2, and the action of the circuit breaker is only driven by the electromagnetic coil of the electromagnetic system 3-0. Further, the circuit breaker of the embodiment further includes a control system 11 and a sampling device 7, where the control system 11 and the sampling device 7 are only used for controlling the moving contact mechanism 4-1 to move from the closed position to the open position through the electromagnetic system 3-0 when the short circuit and overload faults of the circuit where the circuit breaker is located are detected, and are not used for normal opening and closing control of the circuit breaker.

The following is a fourth embodiment of the circuit breaker of the present utility model.

The circuit breaker comprises at least one group of power supply switch circuits, wherein each power supply switch circuit comprises a trigger mechanism 17 and a normally closed switch which are connected in series in the power supply switch circuit, the power supply switch circuit is connected between a power supply of an electromagnetic system 3-0 and the electromagnetic system 3-0 in series, when the circuit breaker is switched on, when an operating piece 2 moves from a switching-on position to a switching-off position, the trigger mechanism 17 is triggered by the operating piece 2 to be conducted, the electromagnetic system 3-0 is electrified to drive a push rod 3-05 to move from a second position to a first position, so that the circuit breaker is switched on, and meanwhile, the push rod 3-05 directly or indirectly triggers the normally closed switch to be switched off, so that the power supply of the electromagnetic system 3-0 and the electromagnetic system 3-0 are disconnected, and when the circuit breaker is switched off, the operating piece 2 moves from the switching-on position to the switching-off position, and meanwhile, the push rod 3-05 is driven to move from the first position to the second position, so that the circuit breaker is switched off. Further, the electromagnetic system 3-0 is further configured to implement a short circuit and/or overload protection function of the circuit breaker of this embodiment, and then the circuit breaker of this embodiment further includes a control system 11, where the control system 11 is electrically connected to the electromagnetic system 3-0, and a circuit structure implementing the electrical connection between the control system 11 and the electromagnetic system 3-0 is connected in parallel to the power supply switch circuit, so that when the control system 11 detects a short circuit and/or overload current through the sampling device 7, the electromagnetic system 3-0 is driven to move the ejector rod 3-05 from the first position to the second position, and the operating element 2 is simultaneously reset from the closing position to the opening position.

It should be noted that, in the description of the present utility model, the terms "upper", "lower", "left", "right", "inner", "outer", and the like indicate an orientation or a positional relationship based on that shown in the drawings or an orientation or a positional relationship conventionally put in use, and are merely for convenience of description, and do not indicate that the apparatus or element to be referred to must have a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating relative importance.

The foregoing is a further detailed description of the utility model in connection with the preferred embodiments, and it is not intended that the utility model be limited to the specific embodiments described. It will be apparent to those skilled in the art that several simple deductions or substitutions may be made without departing from the spirit of the utility model, and these should be considered to be within the scope of the utility model.

Claims (32)

1. The circuit breaker comprises a shell (1) and a main circuit structure, wherein the main circuit structure comprises an operating piece (2) arranged on the shell (1) in a sliding manner, an electromagnetic system (3-0), a contact system (4) and an arc extinguishing system (6) which are matched with the contact system (4) for use, and a control system (11) which is in control connection with the electromagnetic system (3-0), the electromagnetic system (3-0) comprises a magnetism generating component (3-0 m) and a push rod (3-05) which is movably inserted in the middle of the magnetism generating component (3-0 m), the contact system (4) comprises a moving contact mechanism (4-1) and a fixed contact (4-2), two ends of the push rod (3-05) are respectively in transmission fit with the operating piece (2) and the moving contact mechanism (4-1), the operating piece (2) slides back and forth to drive the contact system (4) to be closed and opened through the electromagnetic system (3-0), and the control system (11) controls the electromagnetic system (3-0) to act to drive the contact system (4) to be closed and opened;

The electromagnetic circuit is characterized in that the main circuit structure also comprises a sampling device (7) which is coupled with the contact system (4) and is connected with the control system (11), and when overload and/or short-circuit current flows in the contact system (4), the electromagnetic system (3-0) is controlled by the control system (11) to drive the contact system (4) to be disconnected.

2. The circuit breaker according to claim 1, wherein the movable contact mechanism (4-1) is rotatably arranged, the circuit breaker further comprises a length direction d1, a width direction d2 and a height direction d3, the operating member (2) is arranged at one end of the shell (1) in the length direction d1, the sampling device (7) and the arc extinguishing system (6) are arranged at the other end of the shell (1), the electromagnetic system (3-0) and the contact system (4) are sequentially arranged between the operating member (2) and the arc extinguishing system (6) in the length direction d1, the sampling device (7) and the arc extinguishing system (6) are arranged side by side in the height direction d3, the control system (11) comprises a circuit board (11 p), and at least part of the circuit board (11 p) is arranged side by side with the electromagnetic system (3-0) in the height direction d 3.

3. Circuit breaker according to claim 2, characterized in that the circuit board (11 p) is arranged side by side with the contact system (4) and/or the arc extinguishing system (6) in the width direction d 2.

4. The circuit breaker according to claim 2, characterized in that the operating member (2), the electromagnetic system (3-0) and the sampling device (7) are arranged on the same side of the extinguishing system (6) in the height direction d 3.

5. The circuit breaker according to claim 4, wherein the main circuit structure further comprises a first terminal (8-0) and a third terminal (5-0) respectively arranged at two ends of the housing (1) along a length direction d1, the contact system (4) is connected in series between the first terminal (8-0) and the third terminal (5-0), the third terminal (5-0) and the operating member (2) are arranged side by side along a height direction d3, the electromagnetic system (3-0), the arc extinguishing system (6), the sampling device (7) and the control system (11) are arranged between the operating member (2) and the first terminal (8-0) along the length direction d1, and the operating member (2), the electromagnetic system (3-0), the sampling device (7) and the first terminal (8-0) are arranged on the same side of the third terminal (5-0) and the arc extinguishing system (6) along the height direction d 3.

6. The circuit breaker according to claim 5, wherein the sampling device (7) is a manganese copper shunt, and the first terminal (8-0), the sampling device (7), the moving contact mechanism (4-1), the fixed contact (4-2) and the third terminal (5-0) are sequentially connected in series;

Or the sampling device (7) is a mutual inductor, and the first terminal (8-0), the moving contact mechanism (4-1), the fixed contact (4-2) and the third terminal (5-0) are sequentially connected in series.

7. The circuit breaker according to claim 5, characterized in that the main circuit structure further comprises a connection conductor (20), the stationary contact (4-2) is electrically connected to the third terminal (5-0) via the connection conductor (20), the connection conductor (20) is a conductive plate, and the connection conductor (20) is arranged side by side with the wiring board (11 p) of the control system (11) in the width direction d 2.

8. The circuit breaker according to claim 7, wherein the control system (11) further comprises a first sampling terminal (11-0) provided on the wiring board (11 p), the first sampling terminal (11-0) and the connection conductor (20) are located on one side of the wiring board (11 p) in the width direction d2, the connection conductor (20) is in plug-fit with the first sampling terminal (11-0), and the connection conductor (20), the first sampling terminal (11-0) and the electromagnetic system (3-0) are arranged side by side in the height direction d 3.

9. The circuit breaker according to claim 5, further comprising a secondary circuit structure (9), wherein the secondary circuit structure (9) is a through circuit and comprises a second terminal (8-1), a through conductor and a fourth terminal (5-1) which are sequentially connected in series, the second terminal (8-1) and the first terminal (8-0) are arranged side by side in a height direction d3, the fourth terminal (5-1) and the third terminal (5-0) are arranged side by side in a width direction d2, and the electromagnetic system (3-0), the contact system (4), the arc extinguishing system (6) and the sampling device (7) are arranged side by side in the height direction d3 with the through conductor.

10. The circuit breaker according to claim 9, wherein the control system (11) further comprises a second sampling terminal (11-1) arranged on the circuit board (11 p), the through conductor is a through conductive plate, at least part of the through conductive plate is arranged side by side with the circuit board (11 p) of the control system (11) along the width direction d2, and the part is positioned on one side of the circuit board (11 p) along the width direction d2 and is in plug-fit with the second sampling terminal (11-1), and the through conductive plate, the second sampling terminal (11-1) and the electromagnetic system (3-0) are arranged side by side along the height direction d 3.

11. The circuit breaker according to claim 9, characterized in that the main circuit structure further comprises a signal terminal (12) connected to the control system (11), the first terminal (8-0), the signal terminal (12) and the second terminal (8-1) being arranged side by side in the height direction d 3.

12. The circuit breaker according to claim 5, wherein in the length direction d1, the first terminal (8-0) and the third terminal (5-0) are provided at one end of the circuit breaker, and the operating member (2) is provided at the other end of the circuit breaker.

13. The circuit breaker according to claim 1, wherein the operating member (2) has a closing position and a breaking position, the ejector rod (3-05) is kept stationary during the movement of the operating member (2) from the breaking position to the closing position, the main circuit structure further comprises a triggering mechanism (17) connected with the control system (11), the triggering mechanism (17) is triggered by the operating member (2) moving to the closing position to send a first closing signal to the control system (11), the control system (11) receives the first closing signal to control the electromagnetic system (3-0) to drive the contact system (4) to be closed, and the operating member (2) moves from the closing position to the breaking position to drive the moving contact mechanism (4-1) to move through the ejector rod (3-05) to disconnect the contact system (4).

14. The circuit breaker according to claim 13, wherein the operating member (2) comprises an operating member main body (2 b) and an operating member connecting portion (2 c), one end of the operating member main body (2 b) protrudes outside the housing (1) for external force operation, the other end is connected with the operating member connecting portion (2 c), and one end of the push rod (3-05) is matched with the operating member connecting portion (2 c) and is arranged in a relatively moving manner along the length direction d 1.

15. The circuit breaker according to claim 14, characterized in that the operating member connection (2 c) comprises a connection cavity (2-1 c), the ejector rod (3-05) comprises a front rod body (3-0500) and a front connection cap (3-0501), the front connection cap (3-0501) comprises a front cap peak protruding on one side of the front rod body (3-0500) along the radial direction of the front rod body (3-0500), the front connection cap (3-0501) is movably arranged in the connection cavity (2-1 c), the side wall of the connection cavity (2-1 c) is in transmission fit with the front cap peak, and when the operating member (2) is moved from a closing position to a separating position, the ejector rod (3-05) is driven to move to drive the moving contact mechanism (4-1) to disconnect the contact system (4) through the movement of the ejector rod (3-05).

16. The circuit breaker according to claim 1, wherein the operating member (2) has a closing position and a breaking position, and when the operating member is switched between the closing position and the breaking position, the push rod (3-05) is directly driven to move to drive the moving contact mechanism (4-1) to be closed and opened with the fixed contact (4-2).

17. The circuit breaker according to claim 16, further comprising a front link (3-1) connected to the operating member (2) and disposed so as to be movable in synchronization, wherein one end of the jack (3-05) is connected to the front link (3-1) and disposed so as to be movable in relation to the longitudinal direction d 1.

18. The circuit breaker according to claim 17, wherein the front link (3-1) includes a front link cavity (3-110) and a front link insertion hole (3-111), the jack (3-05) includes a front rod body (3-0500) and a front connection cap (3-0501), an outer diameter of the front connection cap (3-0501) is larger than an outer diameter of the front rod body (3-0500), the front rod body (3-0500) is slidably inserted in the front link insertion hole (3-111) and an outer diameter of the front rod body (3-0500) is matched with an inner diameter of the front link insertion hole (3-111), the front connection cap (3-0501) is disposed in the front link cavity (3-110), and an outer diameter of the front connection cap (3-0501) is larger than an inner diameter of the front link insertion hole (3-111).

19. The circuit breaker according to claim 1, further comprising an indicator (13) rotatably disposed in the middle of the operating member (2) and having a first indication position and a second indication position, wherein the operating member (2) includes an indication hole (2-1) for cooperating with the indicator (13), wherein the indicator (13) is driven to rotate to the first indication position by an indicator driving structure of the circuit breaker when the operating member (2) is moved to the closing position, and wherein the indicator (13) is driven to rotate to the second indication position by an indicator driving structure of the circuit breaker when the operating member (2) is moved to the opening position.

20. The circuit breaker according to claim 1, further comprising a rear link (3-2), wherein the ejector rod (3-05) is in driving connection with the operating member (2) at one end and is connected and moves synchronously with the rear link (3-2) at the other end, and wherein the rear link (3-2) is further hinged with the contact support (4-10) of the moving contact mechanism (4-1).

21. The circuit breaker of claim 20, wherein the rear connecting rod (3-2) is provided with a rear connecting rod cavity (3-20) and a rear connecting rod jack (3-21), the rear connecting rod jack (3-21) is arranged on the side wall of the rear connecting rod cavity (3-20), the ejector rod (3-05) comprises a rear rod body (3-0510) and a rear connecting cap (3-0511), the outer diameter of the rear connecting cap (3-0511) is larger than the outer diameter of the rear rod body (3-0510), the inner diameter of the rear connecting rod jack (3-21) is matched with the outer diameter of the rear rod body (3-0510) and is smaller than the outer diameter of the rear connecting cap (3-0511), the rear rod body (3-0510) is inserted into the rear connecting rod jack (3-21), and the rear connecting cap (3-0511) is arranged in the rear connecting rod cavity (3-20).

22. The circuit breaker according to claim 20, characterized in that the rear link (3-2) is hinged to the contact support (4-10) by means of a rear connecting shaft (3-32), and in that the rear link (3-2) and the contact support (4-10) the rear connecting shaft (3-32) are arranged on one side in a synchronized movement with it and the other side is provided with a kidney-shaped hole cooperating with the rear connecting shaft (3-32).

23. The circuit breaker according to claim 1, characterized in that the main circuit structure further comprises an operating member return spring (18), the operating member return spring (18) acting on the operating member (2) with a tendency to move towards the open position.

24. The circuit breaker according to claim 1, characterized in that the moving contact mechanism (4-1) comprises two groups of moving contacts (4-11) arranged side by side in the width direction d 2.

25. The circuit breaker according to claim 1, characterized in that the housing (1) further comprises signal windows (1-4) respectively provided on the same side wall of the housing (1) and an operating element mounting hole (1-6) into which the operating element is inserted, the signal windows (1-4) being arranged side by side with the operating element mounting hole (1-6) in the height direction d3, and in that the circuit breaker further comprises an indicating element connected to the control system (11), which cooperates with the signal windows (1-4) for indicating the state of the circuit breaker.

26. The circuit breaker according to claim 1, further comprising a first locking member (14) slidably disposed in the housing (1) in a height direction d3 and a first locking member return spring (16), the first locking member return spring (16) acting on the first locking member (14) to cause the first locking member (14) to have a tendency to move toward the outside of the housing (1) and to cause a first locking projection (14-1) of the first locking member (14) to project toward the outside of the housing (1), the first locking member (14) moving toward the inside of the housing (1) when the first locking projection (14-1) is pressed by an external force, the circuit breaker being driven by the drawn operating member (2) to move toward the inside of the housing (1) in the open state;

the circuit breaker further comprises an unlocking mechanism (19), wherein the unlocking mechanism (19) is an unlocking rod, one end of the unlocking rod is in direct or indirect transmission fit with the operating piece 2, and the other end of the unlocking rod is in transmission fit with the first locking piece (14).

27. The circuit breaker according to claim 1, further comprising a second locking member (15) rotatably provided to the housing (1), wherein the second locking member (15) comprises a second locking protrusion (15-0), wherein the second locking member (15) is driven by the operating member (2) to rotate forward to protrude the second locking protrusion (15-0) outside the housing (1) when the circuit breaker is closed, and wherein the second locking member (15) rotates reversely to move the second locking protrusion (15-0) toward the inside of the housing (1) when the circuit breaker is opened.

28. The circuit breaker according to claim 27, characterized in that the second locking member (15) is driven to rotate in opposite directions by the operating member (2) moving towards the opening position when the circuit breaker is opened.

29. The circuit breaker according to claim 28, further comprising a first locking member (14) slidably disposed on the housing (1) in a height direction d3, and a first locking member return spring (16), wherein the first locking member return spring (16) acts on the first locking member (14) to cause the first locking member (14) to have a tendency to move toward the outside of the housing (1), a first locking projection (14-1) of the first locking member (14) projects outside the housing (1), the circuit breaker is in a disconnected state in which the first locking member (14) is driven by the pulled operating member (2) to move into the housing (1), the second locking member (15) is in driving engagement with the first locking member (14), and the first locking member (14) is driven by the reversely rotated second locking member (15) to move toward the inside of the housing (1) when the circuit breaker is disconnected.

30. The circuit breaker according to claim 1, wherein the electromagnetic system (3-0) is a magnetic holding system, the magnetism generating component (3-0 m) comprises a coil component (3-01), a magnetic yoke (3-03) and a permanent magnet (3-04) which are arranged around the coil component (3-01), the permanent magnet (3-04) is sleeved outside the middle part of the coil component (3-01) and is positioned between two electromagnetic coils of the coil component (3-01), the electromagnetic system (3-0) further comprises a movable iron core (3-02) which is arranged in the middle part of the coil component (3-01) in a sliding manner, the movable iron core (3-02) is connected with the ejector rod (3-05) and moves synchronously, two ends of the ejector rod (3-05) are respectively protruded on two axial sides of the coil component (3-01), the electromagnetic system (3-0) further comprises a first static iron core and a second static iron core which are oppositely arranged along the axial direction of the coil component (3-01), one end of the movable iron core (3-02) is attracted with the first static iron core (3-05), and the movable iron core (3-02) is positioned at the first position and the second iron core (3-02) are positioned at the first position and the second position (3-05);

The ejector rod (3-05) comprises a front ejector rod (3-050) and a rear ejector rod (3-051), one end of the front ejector rod (3-050) is inserted into the movable iron core (3-02) and the other end of the front ejector rod is connected with the operating piece (2) in a transmission mode, one end of the rear ejector rod (3-051) is inserted into the movable iron core (3-02) and the other end of the rear ejector rod is connected with the movable contact mechanism (4-1) in a transmission mode.

31. The circuit breaker according to claim 1, wherein the length a of the housing (1) is 100-150 mm, the width b is 10-60 mm, and the height c is 38-45 mm.

32. The circuit breaker according to claim 31, characterized in that the width b of the housing (1) is 10mm, 15mm, 20mm, 30mm or 60mm.