JPH04237921A - Electrical control device for circuit breaker - Google Patents

Abstract

PURPOSE:To enable miniaturizing or long life and to improve reliability, by controlling operating members so that a handle way move to an off position by way of a reset position, using actuator, in operating the handle off. CONSTITUTION:When a remote on switch is closed, remote signal to turn on a handle 4 is input to a control circuit of an actuator 13, and then the handle 4 is operated to on position by an operating part 20, as an operating member 2 moves by a rotation of a motor toward one direction. When operating from on position to off position, a remote off switch is closed to rotate the motor in another direction and the handle 4 is operated toward off direction by the operating part 20, and settled to reset position through a position inspection switch, etc. Immediately, the motor starts to rotate reversly, and stops when timer settled time is reached, and sets to off position. As a reset force to move the handle 4 toward off position does not effect the actuator 13, reliability and life of the actuator 13 can be improved and also miniaturized.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to a circuit breaker electrical operating device for remotely operating a circuit breaker handle.

0002

2. Description of the Related Art This electrical operating device for a circuit breaker operates a handle of a circuit breaker using the power of a driving source such as a motor. FIG. 9 shows a conventional example. That is, this electrical operating device for a circuit breaker has a handle 100 on the top surface and terminals (not shown) at both ends of the handle 100 in the operating direction. a drive unit 102 built into the main body 110 and having a movable body 101 installed on the side and reciprocating in the operating direction by inputting a remote signal; and the handle 10.
The mobile body 1 has an operation section (not shown) for operating the mobile body 1.
01 and an operating member 104 that is slidably connected to the operating member 104.

The drive unit 102 includes a motor 105 operated by the remote signal, a screw shaft 106 that is disposed in the direction of movement of the operating unit and moves the movable body 101 linearly in conjunction with the motor 105, and The support body 107 is parallel to the axis 106 and slidably supports the movable body 101. Further, during manual operation, the operating member 104 is moved in the direction of the electrical operating device of the circuit breaker perpendicular to the operating direction, thereby making it possible to directly operate the handle 100 by hand.

Reference numerals 108 and 109 indicate limit switches for stopping the motor 105 when the handle 100 is in the on and off positions.

[0005]

However, this electric operating device for a circuit breaker does not distinguish between the off operation and the reset operation of the handle 100, and the handle 100 always stops at the same reset position as the off position after the off operation. Therefore, the resetting force of the circuit breaker 103 for moving the handle 100 to the OFF position is applied to the operating member 104, and as a result, a load is constantly applied to the drive unit 102.
There was a possibility that the reliability of 2 and the lifespan would be reduced.

[0006] Also, during manual operation, the operating member 104 may be positioned perpendicular to the operating direction of the handle 100 of the circuit breaker 103.
Move the operating section towards the electric operating device of the handle 1.
00, the end of the operating member 104 opposite to the operating section protrudes in the direction opposite to the circuit breaker 103 of the electrical operating device, and therefore the electrical operating device of the circuit breaker 103 cannot operate the operating member 104. Since it is necessary to increase the length in the direction perpendicular to the direction or to shorten the connection length between the operating member 104 and the moving body 101, the device becomes larger or the coupling between the operating member 104 and the moving body 101 becomes difficult. Since it becomes unstable, there is a possibility that the reliability of the on/off operation will be impaired and the life span will be shortened.

Furthermore, since the plane on which the screw shaft 106 and the support body 107 are disposed is perpendicular to the operating member 104,
The connection is approximately at a point, and when the operating member 104 operates the handle 100 of the circuit breaker 103, the operating force received from the handle 100 causes a moment force to act on the movable body 101, which causes the screw shaft 106 and the support to 1
An excessive force is applied to the screw shaft 106 and the support body 1.
07 reliability and thus reduce mechanical life.

[0008] Accordingly, an object of the present invention is to provide an electrical operating device for a circuit breaker that can be miniaturized, have a long life, and improve reliability.

[0009]

Means for Solving the Problems The electrical operating device for a circuit breaker according to claim 1 is an electrical operating device for a circuit breaker, which has a handle on an upper surface and terminals at both ends of the handle in the operating direction. , a main body provided on a side of the circuit breaker in a direction orthogonal to the operating direction, and a drive unit built into the main body, the drive unit having a movable body that receives a remote signal and reciprocates in the operating direction. and an operation member connected to the movable body and having an operation section for operating the handle, wherein the drive section is configured to move the handle to a reset position when the handle is turned off. An electrical operation device for a circuit breaker, characterized in that the operating member is controlled to move to an OFF position via the OFF position.

The electric operating device for a circuit breaker according to claim 2 comprises:
The operating portion has an engagement recess that detachably engages with a side portion of the handle, and the operating member is slidably attached to the movable body in a direction in which the operating portion engages with and disengages from the handle. and the amount of penetration of the engagement recess into the handle in the engagement direction is 1/2 or more and less than 1 of the width of the handle in the engagement direction.

The electric operating device for a circuit breaker according to claim 3 comprises:
The drive section includes a motor operated by the remote signal, a screw shaft disposed in the operating direction of the operation section that moves the movable body linearly in conjunction with the motor, and a screw shaft parallel to the screw shaft that moves the movable body in a linear manner. The screw shaft and the support are positioned such that the operating section moves on a plane including the screw shaft and the support.

0012

According to the electric operating device for a circuit breaker according to claim 1, the operating member operates as the movable body of the drive section moves in response to a remote signal, thereby turning the handle on or off. When the circuit breaker is turned off, the circuit breaker is turned on or off. In this case, the drive unit controls the operating member such that the handle moves to the off position via the reset position when the handle is turned off, so that the handle moves to the reset position when the operating member turns off. Therefore, the reset force for moving the handle to the OFF position is not applied to the drive section, and therefore there is no risk of deterioration in the reliability and life of the drive section.

According to the electric operating device for a circuit breaker according to claim 2, the operating member is connected to the movable body so as to be slidable in a direction in which the operating section engages and disengages from the handle, so that remote control and The manual operation can be easily switched, and the operation part has an engagement recess that detachably engages with the side part of the handle, and the amount of entry into the handle in the engagement direction is controlled by the handle. Since the width in the engagement direction is set to 1/2 or more and less than 1, the amount of movement of the operating member in the engagement and disengagement direction can be reduced, resulting in a smaller size compared to the conventional example, and the handle can be easily operated by the engagement recess. The reliability of on/off operation and the lifespan can be improved because it does not cause any damage.

According to the electric operating device for a circuit breaker according to claim 3, the screw shaft and the support body are positioned so that the operation section moves on a plane including the screw shaft and the support body. When the operating member operates the handle of the circuit breaker, the moment force acting on the movable body is reduced due to the operation reaction force received from the handle, so that the moment force is applied to the screw shaft and the support body. Forces are reduced and thus the reliability and mechanical life of the screw shaft and the support can be improved.

[0015]

[Embodiment] The first embodiment of this invention is shown in Figs. 1 to 6.
This will be explained using figures. That is, this electrical operating device for a circuit breaker includes a main body 1 , a driving section 13 , and an operating member 2 . First, the circuit breaker 3 has a handle 4 on the top surface,
Terminals 5 are provided at both ends of the handle 4 in the operating direction. The internal structure of the circuit breaker is well known and is therefore omitted.

The main body 1 is provided on a side in a direction perpendicular to the operating direction of the circuit breaker 3. As shown in FIG. 3, the main body 1 is formed by combining a base 8 and a cover 9, and is integrally connected to the circuit breaker 3 by a connecting means (not shown). 44 is a terminal provided on the main body 1. Drive section 13
is built into the main body 1 and has a movable body 17 that inputs a remote signal and reciprocates in the operating direction. The drive unit 13 of the embodiment includes a motor 15 operated by a remote signal as shown in FIGS. 2 and 3, and a motor 15 that is disposed in the operating direction of the operating unit 20 and moves a moving body 17 linearly in conjunction with the motor 15. a screw shaft 16 that is parallel to the screw shaft 16;
The screw shaft 16 and the support body 19 have a support body 19 that slidably supports the screw shaft 16 and the support body 19 so that an operating section 20 of the operating member 2, which will be described later, moves on a plane including the screw shaft 16 and the support body 19.
is being positioned. The motor 15 is capable of forward and reverse rotation, is fixed to one end of the base 8, and has the axial direction of the rotating shaft 14 directed in the height direction of the handle 4. This rotating shaft 14
A bevel gear a is connected, a bevel gear b meshes with the bevel gear a, and a screw shaft 16 is connected to the bevel gear b. The movable body 17 is integrated with a driven body 21 having a screw hole 32 into which the screw shaft 16 is screwed. Further, a base 18 is erected on the side of the motor 15, and a screw shaft 16 is rotatably supported on the base 18. Further, a support 19 is fixed to the base 18, which is an example of a guide shaft located on the same horizontal plane as the screw shaft 16. Furthermore, the movable body 17 has a recess 33 for guiding the operating member at the center of the upper surface 22 on which the operating member 2 is placed.

The driven member 21 also has a switch actuating portion 26 as shown in FIG. Position detection switches 27 and 28, which are embodiments of limit switches, are arranged at two corresponding locations. The position detection switches 27 and 28 detect the position at which the switch operating section 26 is stopped or moved in the opposite direction. That is, in FIG. 3, when the motor 15 rotates in one direction in a state corresponding to the on position of the handle 4, the movable body 17 moves in the direction Press. When the motor 15 is rotated in the opposite direction, the movable body 17 moves in the Y direction and presses the position detection switch 27, resulting in the state shown in FIG.

The operating member 2 has an operating section 20 for operating the handle 4, and is connected to the movable body 17 of the drive section 13. In this case, the operation section 20 includes the screw shaft 16 and the support body 1.
Since the screw shaft 16 and the support body 19 are positioned so as to move on a plane including 9, the moment force applied to the movable body 17 due to the operation reaction force of the handle 4 is reduced. Further, the operating member 2 of the embodiment is the upper surface 22 of the movable body 17.
A projection 34 that is formed by a rectangular plate that rests on the handle 4 and that fits into the recess 33 so as to be slidable in a direction perpendicular to the direction in which the handle 4 is operated.
The operating section 20 is formed at one end. This operating section 20 has an engagement recess 37 formed in the form of a notch at its tip, which enables movement of the operating member 2 in a direction perpendicular to the operating direction, and allows the operating section 20 to engage and disengage from the handle 4. It becomes possible. Therefore, the handle 4 can be easily manually operated by pulling the operating member 2 and removing the engagement recess 37 of the operating section 20 from the handle 4.

The driving section 13 controls the operating member 2 so that the handle 4 moves to the off position via the reset position when the handle 4 is turned off. In the embodiment, this is achieved by rotating the motor 15 in the reverse direction for a predetermined period of time when the position detection switch 28 is pressed by the switch actuator 26. That is, in FIG. 4, 29 is a control circuit for the motor 15, 30 is a power supply, 45 is a remote on switch, and 46 is a remote off switch. When the control circuit 29 turns on the remote on switch 45, the motor 15 is turned on. When the position detection switch 27 is pressed by the switch actuator 26, it stops and the remote off switch 4
When the motor 15 is closed, the motor 15 rotates in the other direction, and when the switch actuator 26 presses the position detection switch 28, the motor 15 rotates in the reverse direction for a predetermined period of time and then stops, as shown in FIG. 5, for example. In the figure, R1 and R2 are relays, r1 and r2
T indicates the normally open contact, T indicates the timer, t indicates the normally open contact, and for the position detection switch, a white circle indicates a normally open contact and a black circle indicates a normally closed contact. When remote ON switch 45 is pressed, relay R2
works, its relay contact r2 turns on, and motor 1
5 rotates in one direction. When the movable body 17 is moved by the rotation of the motor 15 and the position detection switch 27 is pushed by the switch actuator 26, its normally open contact r2 is opened and the relay R2 and the motor 15 are stopped. On the other hand, when the remote off switch 46 is pressed, the relay R1 is activated and its normally open contact r1 is turned on, causing the motor 15 to rotate in the other direction. When the movable body 17 moves in the opposite direction due to the rotation of the motor 15 and the position detection switch 28 is pressed by the switch actuator 26, the relay R1 stops and the timer T operates, and its normally open contact t is connected to the timer T. The motor 15 is turned on only during the set time, and therefore the motor 15 rotates in reverse and stops after the set time has elapsed.

Next, the operation of this circuit breaker electric operating device will be explained. When the remote on switch 45 is closed, a remote signal for turning on the handle 4 is input to the control circuit 29 of the drive unit 13, and the motor 15 rotates in one direction to move the handle 4 via the screw shaft 16 and the driven body 21. As the concave portion 33 of the body 17 moves in the direction Y, the operating member 2 moves in the same direction via the protrusion 34, so the handle 4 is operated to the ON position as shown in FIG. Then, the switch operating portion 26 hits the position detection switch 27, the motor 15 stops, and the operating member 2 stops.

Furthermore, when operating the handle 4 from the on position shown in FIG. 2(a) to the off position shown in FIG. is operated in the OFF direction by the operating section 20, and the switch operating section 26 activates the position detection switch 28.
When it hits, it becomes the reset position as shown in the same figure (b). The motor 15 immediately rotates in the reverse direction and stops when the time set by the timer TK has elapsed, resulting in the off position shown in FIG. 3(c). Resetting after the circuit breaker 3 has tripped is also accomplished with this off operation.

According to this embodiment, the operating member 2 operates as the movable body 17 of the drive unit 13 moves in response to a remote signal, thereby turning the handle 4 on or off, and turning off the circuit breaker 3. turns on or off. In this case, the drive unit 13 operates the handle 4 when the handle 4 is turned off.
Since the operating member 2 is controlled so that the operating member 2 moves to the off position via the reset position, the handle is not located at the reset position due to the off operation of the operating member 2, so the reset force that moves the handle 4 to the off position is applied to the drive unit. Regardless of 13,
Therefore, there is no fear that the reliability and life of the drive section 13 will be reduced.

Further, since the screw shaft 16 and the support body 19 are positioned so that the operation unit 20 moves on a plane containing the screw shaft 16 and the support body 19, the operation member 2 operates the handle 4 of the circuit breaker 3. At times, the moment force acting on the movable body 17 due to the operation reaction force received from the handle 4 is reduced, and the force exerted on the screw shaft 16 and the support body 19 due to the moment force is reduced, and therefore the force applied to the screw shaft 16 and the support body 19 is reduced. 19 reliability and mechanical life can be improved.

A second embodiment of the invention is shown in FIGS. 7 and 8. That is, in the first embodiment of this electric operating device for a circuit breaker, the operating section 20 has an engagement recess 37 that removably engages with the side of the handle 4, and the operating member 2 has the operating section 20. 20 is connected to the movable body 17 so as to be slidable in the direction in which it engages and disengages from the handle 4, and the amount H1 of the engagement recess 37 in the engagement direction into the handle 4 is defined as the width of the handle 4 in the engagement direction. H3 is set to be 1/2 or more and less than 1. Further, the motor control circuit of this embodiment does not include a timer T circuit, and the off position and reset position are the same, so that the operating member 2 is stopped at this position. That is, FIGS. 8(a) to 8(c) show how the handle 4 is turned on and off by remote control. d
) The operating section 20 is removed from the handle 4. Therefore, switching between remote operation and manual operation can be easily performed. Further, the amount H1 of the engagement recess 37, in which the operating portion 20 removably engages with the side portion of the handle 4, enters into the handle 4 in the engagement direction.
is set to 1/2 or more and less than 1 of the width H3 of the handle 4 in the engaging direction, so that the amount of movement H2 of the operating member 2 in the engaging and disengaging direction is
This can reduce the size of the handle compared to the conventional example, and the engagement recess 37 does not impair the operability of the handle 4, so the reliability of on/off operations and the lifespan can be improved.

[0025]

Effects of the Invention In the electric operating device for a circuit breaker according to claim 1, the handle is turned on or off by the operating member as the movable body of the drive unit moves by a remote signal, and the circuit breaker is turned on. or off, but since the drive unit controls the operating member such that the handle moves to the off position via the reset position when the handle is turned off, the handle returns to the reset position when the operating member turns off. Since the handle is not in the OFF position, the reset force for moving the handle to the OFF position is not applied to the drive unit, and there is no risk of deterioration in the reliability and life of the drive unit.

The electric operating device for a circuit breaker according to claim 2 comprises:
Switching between remote control and manual operation can be easily performed by connecting the operating member to the movable body so that it can slide in the direction in which the operating section engages and disengages from the handle. Since the amount of entry of the freely engaging engagement recess into the handle is set to 1/2 or more and less than 1 of the width of the handle in the engagement direction, the amount of movement of the operating member in the engagement and disengagement direction can be reduced. It can be made smaller compared to the above, and the engagement recess does not impair the operability of the handle, so the reliability of on/off operation and the lifespan can be improved.

The electric operating device for a circuit breaker according to claim 3 comprises:
Since the screw shaft and the support body are positioned so that the operation part moves on a plane containing the screw shaft and the support body, when the operation member operates the handle of the circuit breaker, the operation reaction force received from the handle causes the movement member to move on the movable body. Since the acting moment force is reduced, the force exerted on the screw shaft and the support due to the moment force is reduced, and therefore the reliability and mechanical life of the screw shaft and the support can be improved.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a first embodiment of the invention.

FIG. 2 is a plan view of the internal structure with the cover removed.

FIG. 3 is a sectional view thereof.

FIG. 4 is a wiring diagram of a control circuit.

FIG. 5 is a specific circuit diagram of a control circuit.

FIG. 6 is an explanatory diagram illustrating the operating position of the handle.

FIG. 7 is a perspective view of a second embodiment.

FIG. 8 is an explanatory diagram illustrating the operating position of the handle.

FIG. 9 is a sectional view of a conventional example.

[Explanation of symbols]

1 Main body 2. Operating parts 3. Circuit breaker 4 Handle 5 Terminal 13　　　Drive part 17 Mobile object 20　　　　Operation section

Claims (3)

[Claims] 1. An electrical operating device for a circuit breaker, which has a handle on the top surface and terminals at both ends of the handle in the operating direction, the electrical operating device including terminals on the sides of the circuit breaker in a direction perpendicular to the operating direction. a main body provided therein; a drive section built into the main body having a movable body that reciprocates in the operating direction by inputting a remote signal; and an operating section for operating the handle; In the electrical operating device for a circuit breaker, the drive unit controls the operating member such that the handle moves to the off position via a reset position when the handle is turned off. An electrical operating device for a circuit breaker, characterized in that: 2. An electrical operating device for a circuit breaker, which has a handle on the top surface and terminals at both ends of the handle in the operating direction, the electrical operating device including terminals on the sides of the circuit breaker in a direction perpendicular to the operating direction. a main body provided therein; a drive section built into the main body having a movable body that reciprocates in the operating direction by inputting a remote signal; and an operating section for operating the handle; In the electrical operating device for a circuit breaker, the operating member has an engagement recess that removably engages with a side portion of the handle, and the operating member has an engaging recess that detachably engages with a side portion of the handle. The engaging recess is connected to the movable body so as to be slidable in the direction of engagement with and disengagement from the handle, and the amount of entry of the engagement recess into the handle in the engagement direction is set to 1/1 of the width of the handle in the engagement direction. An electrical operating device for a circuit breaker with a value of 2 or more and less than 1. 3. An electrical operating device for a circuit breaker, which has a handle on the top surface and terminals at both ends of the handle in the operating direction, the electrical operating device including terminals on the sides of the circuit breaker in a direction perpendicular to the operating direction. a main body provided therein; a drive section built into the main body having a movable body that reciprocates in the operating direction by inputting a remote signal; and an operating section for operating the handle; In the electric operating device for a circuit breaker, the drive section includes a motor operated by the remote signal, and a motor that is disposed in the operating direction of the operation section and moves the motor in conjunction with the motor. The device has a screw shaft for linearly moving the body, and a support that is parallel to the screw shaft and slidably supports the movable body, so that the operating section moves on a plane including the screw shaft and the support. An electric operating device for a circuit breaker, wherein the screw shaft and the support are positioned at