CN102403169A - Switch mechanism for circuit breaker - Google Patents
Switch mechanism for circuit breaker Download PDFInfo
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- CN102403169A CN102403169A CN201010280216XA CN201010280216A CN102403169A CN 102403169 A CN102403169 A CN 102403169A CN 201010280216X A CN201010280216X A CN 201010280216XA CN 201010280216 A CN201010280216 A CN 201010280216A CN 102403169 A CN102403169 A CN 102403169A
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Abstract
The invention discloses a switch mechanism for a circuit breaker, which comprises a shell, a handle, a rod, a fixed contactor, a movable contact portion, a rotating shaft and a main spring. The handle is rotatably disposed on the shell, one end of the rod is connected onto the handle, the movable contact portion consists of a movable contactor and a rod contact portion, the movable contactor is arranged at one end of the movable contact portion, the rod contact portion is formed at the other end of the movable contact portion and contacts with the other end of the rod, the rotating shaft is rotatably connected with the movable contact portion, one end of the main spring is connected onto the shell, and the other end of the main spring is connected onto the movable contact portion and produces elasticity on the movable contact portion. The switch mechanism is characterized by further comprising a latch and a connecting spring, the latch consists of a contact retaining portion, the contact retaining portion is rotatably connected onto the rotating shaft and supports the rotating shaft so that the other end of the rod keeps contact with the rod contact portion, one end of the connecting spring is connected onto the latch, and the other end of the connecting spring is connected with the movable contact portion, so that the latch and the movable contact portion rotate in the same direction.
Description
Technical field
The present invention relates to a kind of switching mechanism of circuit breaker; It comprises housing, the power supply or fixed contact in the load and the movable contactor that are arranged on the handle in the housing and are connected to circuit rotationally; And more particularly; The switching mechanism that relates to a kind of following circuit breaker: wherein the quantity of element reduces, and movable contact terminal and fixedly the distance between the contact terminal increase effectively, thereby improved opening performance and operability.
Background technology
Usually, small-sized plastic-shell circuit breaker (MCCB) is a kind of being provided for through preventing load device and circuit because the fault current in the circuit (overload or short circuit) is damaged the electric protection device of protective circuit.Especially, MCCB is for being arranged on the device in the little distribution board thick and fast, so as from the shopping centre, a position (that is little the distribution board) switch of connecting easily and cut off the electricity supply in office place, department store etc.In addition, MCCB is used to switch on or off the power supply of device in lathe or the equipment etc., and can a plurality of MCCB be arranged in the distribution board with high density.
Referring now to accompanying drawing small-sized MCCB commonly used is described.
Fig. 1 is the figure of disconnection (resetting) state that the small-sized MCCB of correlation technique is shown.Usually, circuit breaker comprises: the housing and the lid 8 that is connected to the top of housing that are used for receiving element; The switching mechanism unit, it is formed on the inboard of housing and lid and mechanically connects and cut off circuit; The tripgear unit, it is used to detect the abnormal current that occurred and fault current and makes the circuit tripping operation; And the arc-control device unit, it is used to extinguish the electric arc that when circuit breaker trip, between contact point, produces.
Fig. 1 illustrates disconnection (resetting) state of circuit breaker, and wherein movable contactor 5 was opened with fixed contact in 6 minutes.
The switching mechanism unit comprises: handle 1, and it is used to show each state position; Bar (level) 2, it is used for confirming run-on point; Breech lock 3, it is used to carry out locking; The breech lock lid; Trip(ping) bar 4, it is used for open circuit; The main spring (not shown), it is used for tripping operation and breaks off; Tripping operation spring (not shown), it is operated through the tripping operation pressure between breech lock and the trip(ping) bar; And the back-moving spring (not shown), its back pressure through handle is operated.
The miniature circuit breaker of correlation technique is disadvantageous in the following areas: the big and complicacy of the size of switching mechanism unit and arc extinguishing unit is little.That is, the miniature circuit breaker of correlation technique comprises: the movable contact of breech lock, breech lock lid, trip(ping) bar, support movable contactor divides and is used to bring pressure to bear on three springs in their motion, therefore needs many elements and them to be not easy assembling.In addition, because the switching mechanism unit occupies big relatively space, therefore limited the size of the arc-control device of circuit breaker, thereby reduced arc extinction performance.
And, the movable contact that supports movable contactor divide and the breech lock lid between have the O/T angle of contact point, this makes and is difficult to increase the distance between movable contactor and the fixed contact, therefore is difficult to improve the short-circuit capability of circuit breaker.
In addition, owing to many elements and complicated structure have increased material cost and assembly cost.
Summary of the invention
Therefore, for addressing the above problem, the described various characteristic of having considered here.
A kind of scheme of the present invention provides a kind of switching mechanism of circuit breaker, and it reduces the size of switching mechanism unit through reducing number of elements, thereby can make the size maximization of arc-control device, thereby improves arc extinction performance.
Another kind of scheme of the present invention provides a kind of switching mechanism of circuit breaker, and it can improve short-circuit capability through the distance that increases between movable contactor and the fixed contact.
Another kind of scheme of the present invention provides a kind of switching mechanism of circuit breaker, and it simplifies the structure and reduce number of elements and can reduce material cost and assembly cost through making.
According to a kind of scheme of the present invention, a kind of switching mechanism of circuit breaker is provided, it comprises: housing; Be arranged on the handle on the housing rotationally; Has the bar that is connected to the end on the handle; Fixed contact; The movable contact branch, it comprises movable contactor at one end, and the bar contact portion that is formed on other end place and contacts with the other end of bar; Rotation axis, it divides with movable contact and connects rotationally; And main spring; It has and is connected to the end on the housing and is connected to the other end that movable contact divides; And produce the elastic force that movable contact is divided, it is characterized in that the switching mechanism of circuit breaker further comprises: breech lock; It comprises the contact retaining part that is connected on the rotation axis rotationally and supports rotation axis, so that the other end of bar keeps contacting with the bar contact portion; And the connection spring, it has an end that is connected on the breech lock and the other end that connects with the movable contact branch, has identical rotation direction with latch enable with the movable contact branch.
Movable contact divides can comprise long rotation axis accommodation hole, and when rotation axis was coupled in the rotation axis accommodation hole, the movable contact branch can move with respect to rotation axis along long side direction of slotted hole.
When fixed contact and movable contactor contact with each other, movable contact divide can be through main spring elastic force move with respect to rotation axis along the long side direction of slotted hole, thereby strengthen the contact pressure of fixed contact and movable contactor.
In switching mechanism; When the direction that connects along circuit when handle is rotated; Having the bar that can be connected to the end on the handle contacts with the bar contact portion; So that thereby movable contact divides pressurization to make it rotate with respect to rotation axis; Breech lock can rotate with the identical direction of rotation direction that movable contact divides on the edge through connecting spring, keeps the contact between bar and the bar contact portion to allow the contact retaining part, and movable contactor can contact with fixed contact according to the rotation that movable contact divides; And movable contactor can move with respect to rotation axis along long side direction of slotted hole according to the rotation of movable contactor and the elastic force of main spring, thereby strengthens the contact pressure of fixed contact and movable contactor.
Simultaneously, when fixed contact and movable contactor separated, movable contact divided according to the elastic force of main spring and can rotate so that move along the long side direction of slotted hole with respect to rotation axis, thereby increases the spacing between fixed contact and the movable contactor.
Switching mechanism can further comprise: be connected to the tripping mechanism on the housing, and breech lock can further comprise the tripping operation contact portion that can contact with tripping mechanism.Therefore; Under the situation of tripping operation; The tripping operation contact portion can be rotated based on rotation axis with latch enable through tripping mechanism is pressurized, and movable contact divides through connecting the spring rotation, and fixed contact and movable contactor separate according to the rotation that movable contact divides; And movable contact divides elastic force the moving than a long side direction along slotted hole through main spring; Increasing the spacing between fixed contact and the movable contactor, and the rotation that can divide according to movable contact of the other end of bar and the elastic force motion of main spring, thereby make handle on the end that is connected to bar along the disconnection direction rotation of circuit.
In the switching mechanism of circuit breaker, breech lock is configurable to be first attachment tabs that comprises that the end that connects spring is connected, and movable contact to divide configurable be to comprise second attachment tabs that the other end connected that connects spring.Here, movable contact divides configurable for further comprising brake component, and this brake component is outstanding so that contact with housing.
The bar contact portion configurable for recessed to have stage portion, the other end of its king-rod is received to be held.And the contact retaining part can comprise contact jaw and form from the extended horizontal contact-making surface of contact jaw.Contact jaw can comprise slope, and the other end of bar is configurable for to contact and to be maintained at contact condition with horizontal contact-making surface, slope and bar contact portion.
Above-mentioned and other purposes of the present invention, characteristic, scheme and advantage will combine to become more obvious in the accompanying drawing detailed description of the invention below.
Description of drawings
Fig. 1 is the sectional view of the circuit breaker of correlation technique;
Fig. 2 is the figure that illustrates according to the operation of circuit breaker when the circuit breaker trip of exemplary embodiment of the present invention;
Fig. 3 is the figure that illustrates according to the normal running of the circuit breaker of exemplary embodiment of the present invention;
Fig. 4 is the stereogram according to the movable contact branch of the switching mechanism of the circuit breaker of exemplary embodiment of the present invention;
Fig. 5 is the stereogram according to the breech lock of the switching mechanism of the circuit breaker of exemplary embodiment of the present invention;
Fig. 6 is the figure of the operation when the movable contact when the switching mechanism of circuit breaker according to exemplary embodiment of the present invention being shown dividing tripping operation; And
Fig. 7 is the figure that the normal running that the movable contact according to the switching mechanism of the circuit breaker of exemplary embodiment of the present invention divides is shown.
Embodiment
To combine accompanying drawing that exemplary embodiment of the present invention is described now.
Fig. 2 is the figure that illustrates according to the operation of circuit breaker when the circuit breaker trip of exemplary embodiment of the present invention.Fig. 3 is the figure that illustrates according to the normal running of the circuit breaker of exemplary embodiment of the present invention.Fig. 4 is the stereogram according to the movable contact branch of the switching mechanism of the circuit breaker of exemplary embodiment of the present invention.Fig. 5 is the stereogram according to the breech lock of the switching mechanism of the circuit breaker of exemplary embodiment of the present invention.Fig. 6 is the figure of the operation when the movable contact when the switching mechanism of circuit breaker according to exemplary embodiment of the present invention being shown dividing tripping operation.Fig. 7 is the figure that the normal running that the movable contact according to the switching mechanism of the circuit breaker of exemplary embodiment of the present invention divides is shown.
For helping to understand the present invention,, the switching mechanism according to the miniature circuit breaker of exemplary embodiment of the present invention is described now with the Fig. 2 that combines to illustrate according to (open circuit) state that opens circuit of the miniature circuit breaker of exemplary embodiment.
As shown in, according to the switching mechanism of the miniature circuit breaker of exemplary embodiment of the present invention comprise housing 100, handle 200, fixed contact 400, the movable contact that comprises movable contactor 310 divides 300, bar 500, rotation axis 600, breech lock 800, main spring 700 and connect spring 900.
Movable contact divides 300 to comprise movable contactor 310 that is formed on the one of which end and the bar contact portion 320 that is formed on its other end, and the other end of bar 800 contacts with bar contact portion 320.The details that movable contact divides is illustrated among Fig. 4.
For switching on or off circuit, movable contact divides 300 can move to it and fixed contact 500 position contacting or move to it and position that fixed contact was opened in 500 minutes.As shown in Figure 4, the movable contact branch is included in the movable contactor 310 that movable contact divides the some place that contacts with fixed contact.
The movable contact branch comprises long rotation axis accommodation hole 330.When rotation axis 600 inserted in the rotation axis accommodation hole 330, the movable contact branch rotated with respect to rotation axis.In addition, as shown in Figure 4, movable contact divides and can move with respect to rotation axis along long side direction (A) of accommodation hole.When fixed contact 400 and movable contactor 310 contacted with each other, movable contact divided 300 elastic force the moving with respect to rotation axis 600 than a long side direction (A) along slotted hole according to main spring 700 (to be described).Therefore, increased contact pressure between fixed contact 400 and the movable contactor 310.
As shown in Figure 5, movable contact divides and can comprise and form recessedly to have the bar contact portion 320 of stage portion that the other end of bar can be received and remain on wherein.Because bar contact portion 320 is recessed having stage portion, so the other end of bar held by recess, and because the other end of bar is pushed by breech lock (to be described), therefore can limit the motion of breech lock.
Simultaneously, as shown in Figure 4, it is to comprise second attachment tabs 340 that the other end connected that connects spring (to be described) that movable contact divides configurable.This structure allows to connect spring and can easily be connected on the movable contact branch.
And as shown in Figure 4, movable contact divides configurable for comprising brake component 350, and brake component 350 is outstanding so that contact with housing.Through this structure, the operation that movable contact divides can be limited within the specific limits, thereby prevents that the movable contact branch from producing damage because of too much operation.
One end of main spring 700 and the other end are connected to housing and movable contact divides, to produce the elastic force that movable contact is divided.In this exemplary embodiment; One end of main spring has annular shape so that hooked and be fixed on the housing by the protuberance of housing; And as shown in Figure 4, the other end of main spring is hooked by near the bend that forms the rotation axis accommodation hole that divides at movable contact.Therefore, under the state that circuit breaks off, the top that movable contact divides is pulled so that rotate with respect to rotation axis, thereby fixed contact branch and movable contact are divided separately, keep separately, and increase spacing (to be described).
Simultaneously, under the state that circuit is connected, the top that the pulling movable contact divides, the maintenance movable contact divides and the effect of the contact pressure of the state that the fixed contact branch contacts with each other yet this plays.This will carry out more detailed description based on the operation of this exemplary embodiment.
As shown in Figure 5, breech lock 800 comprises rotation axis accommodation hole 840, so it can be connected on the rotation axis 600 rotationally.In order to support, contact retaining part 810 is formed on the upper end of breech lock, makes the other end of bar keep contacting with the bar contact portion.
Contact retaining part 810 comprises contact jaw 811 and forms from the extended horizontal contact-making surface 812 of contact jaw.Contact jaw is included in the slope 813 with the boundary portion place of horizontal contact-making surface.The other end of bar contacts with bar contact portion 320 with horizontal contact-making surface 812, slope 813.Therefore, bar can not return immediately, but divides fixing stably to keep the state of handle through breech lock and movable contact.
Simultaneously, breech lock comprises first attachment tabs 830 that the end that connects spring is connected.As shown in Figure 5, attachment tabs 830 has outwards outstanding and crooked shape.Connecting spring is connected on the attachment tabs 830.
Connecting spring 900 is a kind of elastomeric springs, and it disposes as follows: the one of which end is connected on the breech lock 800 and the other end is connected to movable contact and divides on 300, makes breech lock have identical rotation direction with the movable contact branch.As stated, the connection spring is connected on second attachment tabs 340 of movable contact branch.Therefore, movable contact divides and breech lock rotates along equidirectional owing to connect spring, and is not separated greater than certain distance.
In Fig. 2, show tripping mechanism 450.Tripping mechanism 450 comprises through solenoid operated presser unit (not shown), breech lock pressurizeed when the tripping operation being used for.Tripping mechanism is a universal component, therefore will omit its detailed description.
This structure obtains following effect: because breech lock is directly pressurized through tripping mechanism, and do not need like this trip(ping) bar in the circuit breaker of the correlation technique that needs trip(ping) bar, therefore reduced the quantity of element.In addition, in this exemplary embodiment, the tripping operation spring of elastic force need be provided between breech lock and trip(ping) bar in correlation technique, thereby reduce the quantity of element.Therefore, exist with the same big headroom (leeway) of abridged trip(ping) bar thus make the enough big raising arc extinction performance of arc-control device.Therefore in addition, because assembling is simplified, can increases work efficiency and can reduce unit cost.
To combine accompanying drawing now, the operation through exemplary embodiment of the present invention is described below in greater detail structure of the present invention.
In this exemplary embodiment, to continue to use when the direction of circuit connection is rotated when handle 200, its operating process is as follows to reach state as shown in Figure 3.
Continue to use when the direction of circuit connection is rotated when handle 200, the bar 500 that an end is connected on the handle contacts with bar contact portion 320, pressurizes movable contact is divided 300, thereby makes movable contact divide 300 with respect to rotation axis 600 rotations.Therefore, breech lock 800 rotates with the identical direction of rotation direction that movable contact divides through connecting spring 900 edges, to keep the contact between bar 500 and the bar contact portion 320.
Movable contactor contacts with fixed contact according to the rotation that movable contact divides; Then according to the elastic force of the rotation of movable contactor and main spring along the long side direction (A) of slotted hole with respect to the rotation axis motion, thereby increase the contact pressure between fixed contact and the movable contactor.
This is because the distance of the contact point motion of movable contactor and fixed contact goes up the distance of motion at long side direction (A) of slotted hole through the elastic force of main spring not as movable contactor; Therefore because the local deformation of movable contact branch such as bending etc. produces pressure equally, to strengthen contact pressure.
Simultaneously, in order to reach state as shown in Figure 2 so that at when tripping operation short circuit, carry out following operations according to exemplary embodiment of the present invention.
Under the situation of tripping operation, the tripping operation contact portion makes breech lock rotate based on rotation axis through tripping mechanism and pressurized, and movable contact divides through connecting spring and rotates.Therefore, fixed contact and movable contactor are separated according to the rotation that movable contact divides, and movable contact divides the elastic force through main spring to move along the long side direction of slotted hole, have increased the spacing between fixed contact and the movable contactor.That is, when fixed contact and movable contactor separated, movable contact divided with respect to rotation axis and rotates, so that the elastic force through main spring moves along the long side direction of slotted hole, thereby had increased the spacing (B) between fixed contact and the movable contactor.
This is that the long side direction along slotted hole moves because the elastic force of movable contact branch through main spring rotates with respect to rotation axis, thereby divides along the move distance increase movable contactor of the long side direction (A) of slotted hole and the spacing (B) between the fixed contact through movable contact according to fulcrum and leverage.
Simultaneously, the other end of bar moves according to breech lock, the rotation of movable contact branch and the elastic force of main spring, rotates along the direction that circuit breaks off so that be connected to the handle of an end of bar.
As stated, exemplary embodiment of the present invention has the following advantages.
In other words, compare with the circuit breaker of the correlation technique that needs trip(ping) bar, in exemplary embodiment of the present invention, breech lock is directly pressurized through tripping mechanism, has the effect that reduces number of elements.In addition, because therefore the tripping operation spring that elastic force is provided between breech lock and trip(ping) bar that need be in correlation technique in exemplary embodiment of the present invention has number of springs from three effects that reduce to two.Therefore, exist and the same big headroom of abridged trip(ping) bar, thereby make the enough big arc extinction performance that improves of arc-control device.In addition, because assembling is simplified, therefore can improves operating efficiency and can reduce unit cost.
In addition; Because the rotation that movable contactor divides according to movable contact and contacting with fixed contact; And according to the rotation of movable contactor and because the elastic force of main spring; Movable contactor moves with respect to rotation axis along long side direction (A) of slotted hole, has the effect that strengthens the contact pressure between fixed contact and the movable contactor.
In addition; When fixed contact and movable contactor separate; Movable contact divides with respect to rotation axis and rotates so that move according to the elastic force of the main spring long side direction along slotted hole, therefore has the effect that increases the spacing (B) between fixed contact and the movable contactor.
Because the present invention can be embodied in some forms and not deviate from its characteristics; It is to be further understood that; The foregoing description is not limited by any details of aforementioned specification, except as otherwise noted, but should broadly be limited to as in institute's restricted portion in subsidiary claim; Therefore drop on all variations and improvement in the scope of claim, or being equal to also therefore to confirm as by the claim of attaching and comprising of this boundary and scope.
Claims (11)
1. the switching mechanism of a circuit breaker, it comprises: housing; Be arranged on the handle on the said housing rotationally; Has the bar that is connected to the end on the said handle; Fixed contact; The movable contact branch, it comprises movable contactor at one end, and the bar contact portion that is formed on other end place and contacts with the other end of said bar; Rotation axis, it divides with said movable contact and connects rotationally; And main spring, it has an end that is connected on the said housing, and is connected to the other end that said movable contact divides, and produces the elastic force that said movable contact is divided;
It is characterized in that,
The switching mechanism of said circuit breaker further comprises:
Breech lock, it comprises the contact retaining part that is connected on the rotation axis rotationally and supports rotation axis, so that the other end of said bar keeps contacting with said bar contact portion; And
Connect spring, it has an end that is connected on the said breech lock and the other end that connects with said movable contact branch, has identical rotation direction to allow said breech lock with said movable contact branch.
2. the switching mechanism of a circuit breaker, it comprises: housing; Be arranged on the handle on the said housing rotationally; Has the bar that is connected to the end on the said handle; Fixed contact; The movable contact branch, it comprises movable contactor at one end, and the bar contact portion that is formed on other end place and contacts with the other end of said bar; Rotation axis, it divides with said movable contact and connects rotationally; Main spring, it has an end that is connected on the said housing, and is connected to the other end that said movable contact divides, and produces the elastic force that said movable contact is divided; And be connected to the tripping mechanism on the said housing;
It is characterized in that,
The switching mechanism of said circuit breaker further comprises:
Breech lock, it comprises the contact retaining part that is connected on the rotation axis rotationally and supports rotation axis, so that the other end of said bar keeps contacting with said bar contact portion; And
Connect spring, it has an end that is connected on the said breech lock and the other end that connects with said movable contact branch, has identical rotation direction to allow said breech lock with said movable contact branch.
3. switching mechanism according to claim 1 and 2; Wherein said movable contact branch comprises long rotation axis accommodation hole; And when said rotation axis was connected in the said rotation axis accommodation hole, said movable contact branch can move with respect to said rotation axis along long side direction of slotted hole.
4. switching mechanism according to claim 3; Wherein when said fixed contact and said movable contactor contact with each other; Said movable contact divides the elastic force through said main spring to move with respect to said rotation axis than a long side direction along the said of said slotted hole, thereby strengthens the contact pressure of said fixed contact and said movable contactor.
5. switching mechanism according to claim 3; Wherein when said fixed contact and said movable contactor separate; Said movable contact divides the elastic force according to said main spring to move than a long side direction with respect to said rotation axis rotation and along the said of said slotted hole, thereby increases the spacing between said fixed contact and the said movable contactor.
6. switching mechanism according to claim 4; When the direction that wherein connects along circuit when said handle is rotated; Having the bar that is connected to the end on the said handle contacts with said bar contact portion; Thereby to divide pressurization to make it rotate with respect to said rotation axis to said movable contact; The direction that the rotation direction that said breech lock divides through said connection spring edge and said movable contact is identical is rotated; To allow said contact retaining part to keep the contact between said bar and the said bar contact portion; The rotation that said movable contactor divides according to said movable contact and contact with said fixed contact, and said movable contactor moves with respect to said rotation axis according to the elastic force of the rotation of said movable contactor and the said main spring said side direction of growing along said slotted hole, thus strengthen the contact pressure of said fixed contact and said movable contactor.
7. switching mechanism according to claim 5, wherein
Said breech lock further comprises the tripping operation contact portion that can contact with said tripping mechanism, and
Under the situation of tripping operation; Said tripping operation contact portion is pressurized to allow said breech lock to rotate based on said rotation axis through said tripping mechanism; Said movable contact divides through said connection spring rotation; Said fixed contact and said movable contactor separate according to the rotation that said movable contact divides; And said movable contact divides the elastic force through said main spring to move increasing the spacing between said fixed contact and the said movable contactor along the said long side direction of said slotted hole, and
The other end of said bar moves according to the rotation of said movable contact branch and the elastic force of said main spring, thereby the said handle on the end that is connected to said bar is rotated along the disconnection direction of circuit.
8. switching mechanism according to claim 1 and 2, wherein said breech lock comprise first attachment tabs that an end of said connection spring is connected, and said movable contact branch comprises second attachment tabs that the other end connected of said connection spring.
9. switching mechanism according to claim 1 and 2, wherein said movable contact branch comprises brake component, said brake component is outstanding so that contact with said housing.
10. switching mechanism according to claim 1 and 2, wherein said bar contact portion is recessed to have stage portion, and the other end of said bar is accommodated in wherein to be held.
11. switching mechanism according to claim 1 and 2; Wherein said contact retaining part comprises contact jaw and forms from the extended horizontal contact-making surface of said contact jaw; Said contact jaw comprises slope, and the other end of said bar contacts and remain on contact condition with said horizontal contact-making surface, said slope and said bar contact portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010280216.XA CN102403169B (en) | 2010-09-08 | 2010-09-08 | Switching mechanism for chopper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010280216.XA CN102403169B (en) | 2010-09-08 | 2010-09-08 | Switching mechanism for chopper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102403169A true CN102403169A (en) | 2012-04-04 |
| CN102403169B CN102403169B (en) | 2017-03-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010280216.XA Active CN102403169B (en) | 2010-09-08 | 2010-09-08 | Switching mechanism for chopper |
Country Status (1)
| Country | Link |
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| CN (1) | CN102403169B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4641001A (en) * | 1984-06-15 | 1987-02-03 | Mitsubishi Denki Kabushiki Kaisha | Circuit interrupter |
| CN85106821A (en) * | 1985-07-25 | 1987-03-04 | 三菱电机株式会社 | Circuit breaker |
| US4743878A (en) * | 1985-05-01 | 1988-05-10 | Mitsubishi Denki Kabushiki Kaisha | Circuit interrupter |
| JPH01311529A (en) * | 1988-06-08 | 1989-12-15 | Mitsubishi Electric Corp | Circuit breaker opening/closing mechanism |
| EP1096531A1 (en) * | 1999-10-26 | 2001-05-02 | Bticino S.P.A. | Operating mechanism of a moving contact for an automatic electrical circuit breaker |
| CN201238019Y (en) * | 2008-08-05 | 2009-05-13 | 无锡唯特电气技术有限公司 | Free-tripping actuating mechanism of miniature circuit breaker |
-
2010
- 2010-09-08 CN CN201010280216.XA patent/CN102403169B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4641001A (en) * | 1984-06-15 | 1987-02-03 | Mitsubishi Denki Kabushiki Kaisha | Circuit interrupter |
| US4743878A (en) * | 1985-05-01 | 1988-05-10 | Mitsubishi Denki Kabushiki Kaisha | Circuit interrupter |
| CN85106821A (en) * | 1985-07-25 | 1987-03-04 | 三菱电机株式会社 | Circuit breaker |
| JPH01311529A (en) * | 1988-06-08 | 1989-12-15 | Mitsubishi Electric Corp | Circuit breaker opening/closing mechanism |
| EP1096531A1 (en) * | 1999-10-26 | 2001-05-02 | Bticino S.P.A. | Operating mechanism of a moving contact for an automatic electrical circuit breaker |
| CN201238019Y (en) * | 2008-08-05 | 2009-05-13 | 无锡唯特电气技术有限公司 | Free-tripping actuating mechanism of miniature circuit breaker |
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| Publication number | Publication date |
|---|---|
| CN102403169B (en) | 2017-03-01 |
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