CN207558723U - Small type circuit breaker operating mechanism - Google Patents
Small type circuit breaker operating mechanism Download PDFInfo
- Publication number
- CN207558723U CN207558723U CN201721852729.7U CN201721852729U CN207558723U CN 207558723 U CN207558723 U CN 207558723U CN 201721852729 U CN201721852729 U CN 201721852729U CN 207558723 U CN207558723 U CN 207558723U
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- China
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- connecting rod
- tripping
- shaped bar
- handle
- mechanism rack
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Abstract
The utility model is related to a kind of small type circuit breaker operating mechanisms,Including mechanism rack,Handle,First connecting rod,Second connecting rod,Third connecting rod,Tension spring,Moving contact,Rotation is provided with tripping on the third axis of mechanism rack,The lock being interlocked with tripping is provided on 4th axis of mechanism rack,Reset tension spring is provided between the lock and the side plate of mechanism rack,The first connecting rod is connect with second connecting rod by U-shaped bar,It is corresponded in the tripping and arcuate guide hole is provided at second connecting rod,One end of the U-shaped bar is set in arcuate guide hole,And it can reciprocatingly slide in arcuate guide hole with first connecting rod,The other end of the U-shaped bar is connected on handle,Rotation is provided with and the matched flap of U-shaped bar on the third axis,Torsional spring is provided between flap and the side plate of mechanism rack,The arc groove to fasten with U-shaped bar is provided on flap.The utility model has the advantages that high breaking, stable and reliable for performance, service life is long.
Description
Technical field
The utility model is related to a kind of miniature circuit breakers, and in particular to a kind of small type circuit breaker operating mechanism.
Background technology
At present, the rapid development of power industry industry, miniature circuit breaker are widely applied to daily family as protective device
With in equipment and various public place electric wirings, it not only can with disjunction with connect normal load current, but also work as circuit
There is overload, short circuit when failures, automatically cut off circuit, the protection person and property safety.Miniature circuit breaker include operating mechanism,
Contact system, electromagnetic tripping system, arc quenching system, the structure design of the operating mechanism of existing Xiangjiang breaker is unreasonable, from
And lead to the miniature circuit breaker there are the defects of performance is unstable, breaking capacity is low, service life is short.
Invention content
The purpose of the utility model is to overcome the defects of the prior art, provide a kind of high breaking, it is stable and reliable for performance, make
With the small circuit breaker operation mechanism of long lifespan.
To achieve the above object, the utility model uses a kind of small type circuit breaker operating mechanism, is set including mechanism rack, rotation
Put the handle in the first axle of mechanism rack, second with the first connecting rod of handle linkage setting and first connecting rod linkage setting
Connecting rod, is connected to third connecting rod at the third connecting rod for being rotatably arranged on the second axis of mechanism rack and being set with second connecting rod linkage
Tension spring between the side plate of mechanism rack, the moving contact with third connecting rod linkage setting rotate setting on the third axis of mechanism rack
There is tripping, the lock being interlocked with tripping is provided on the 4th axis of mechanism rack, between the lock and the side plate of mechanism rack
Reset tension spring is provided with, the first connecting rod is connect with second connecting rod by U-shaped bar, and second connecting rod is corresponded in the tripping
Place is provided with arcuate guide hole, and one end of the U-shaped bar is set in arcuate guide hole, and can be in arc with first connecting rod
Reciprocatingly slide in pilot hole, the other end of the U-shaped bar is connected on handle, on the third axis rotation be provided with and U
Type bar matched flap is provided with torsional spring between flap and the side plate of mechanism rack, be provided with what is fastened with U-shaped bar on flap
Arc groove.
The advantageous effect of above structure is：The small type circuit breaker operating mechanism has high breaking, stable and reliable for performance, use
The advantages of long lifespan, in closing operation, rotational handle handle drives first connecting rod, the U-shaped bar on first connecting rod is led in arc
It is slided into slot, first connecting rod drives second connecting rod, and second connecting rod driving third connecting rod action is led when U-shaped bar slides into arc
To slot arc convex portion when, moving contact stopping action, be rotated further handle, after dead point is crossed by mechanism to be operated, U-shaped bar and flap
On arc groove fasten, third connecting rod driving moving contact rapidly with static contact be closed, so as to fulfill moment close a floodgate purpose.
Particularly, one end of the moving contact has contact site there are two bifurcated and formation, is respectively provided on each contact site
There is a movable contact, there are two contact torsional springs for suit on second axis, and one end of two contact torsional springs is contradicted respectively in moving contact
On, the other end of two contact torsional springs is contradicted on third connecting rod respectively.Moving contact use Double-breakpoint structure, and moving contact with
There are two contact torsional springs for setting between third connecting rod, can ensure moving contact in the range of certain angle, are turned round by two contacts
The dynamic balance buffering of spring is adjusted, and when closing a floodgate, is ensured that two movable contacts can be reliably bonded with static contact, is reduced temperature between dynamic/static contact
The influence brought to mechanism and handle is risen, improves the reliability of circuit breaker operation mechanism work.
Particularly, the tripping is towards being provided with clamping piece on one end of lock, and the lock is towards the one of tripping
Buckling groove is provided on side, the clamping piece is mutually clamped with buckling groove and forms tripping and the clamping engagement of lock.Breaker
During combined floodgate, lock is interlocked with tripping, and lock has locking function；When short circuit occurs for circuit, circuit breaker electric magnetic system takes off
The mandril for detaining device pushes lock, and lock is detached with tripping, so as to fulfill the quick acting switching-off of breaker,
Particularly, the first connecting rod is provided with arc-shaped slot on one end of handle, when the handle rotates,
U-shaped bar contradicts in arc-shaped slot and forms handle and first connecting rod is linked.By being provided on first connecting rod and U
The card slot that type bar fastens ensure that the reliability being driven between handle and first connecting rod.
Description of the drawings
Fig. 1 is the utility model embodiment exploded view.
Fig. 2 removes the stereogram after side plate for the utility model embodiment.
Fig. 3 is the assembling figure of the utility model first connecting rod and second connecting rod, third connecting rod.
Fig. 4 is the stereogram of the utility model embodiment tripping.
Specific embodiment
As shown in figures 1-4, the utility model embodiment is a kind of small type circuit breaker operating mechanism, including mechanism rack 10, is turned
The dynamic handle 11 being arranged in the first axle 101 of mechanism rack 10, first connecting rod 12 and first connecting rod with the linkage setting of handle 11
The second connecting rod 13 of 12 linkage settings is rotatably arranged on the second axis 102 of mechanism rack 10 and is set with the linkage of second connecting rod 13
Third connecting rod 14, be connected between third connecting rod 14 and the side plate 103 of mechanism rack 10 tension spring 141, with third connecting rod 14
The moving contact 20 of setting is moved, is rotated on the third axis 104 of mechanism rack 10 and is provided with tripping 15, on the 4th axis 105 of mechanism rack 10
The lock 16 being interlocked with tripping 15 is provided with, reset is provided between the lock 16 and the side plate 103 of mechanism rack 10 and is drawn
Spring 161, as shown in Figures 2 and 4, the tripping 15 towards lock 16 one end on be provided with clamping piece 152, the lock 16
Buckling groove 161 is provided on towards the side of tripping 15, the clamping piece 152 is clamped with 162 phase of buckling groove and forms tripping
15 with lock 16 clamping engagement.During breaker closing, lock is interlocked with tripping, and lock has locking function；When circuit is sent out
During raw short circuit, the mandril of the buckle releaser of circuit breaker electric magnetic system pushes lock, and lock is detached with tripping, so as to fulfill breaker
Quick acting switching-off.The first connecting rod 12 is connect with second connecting rod 13 by U-shaped bar 17, and corresponding second connects in the tripping 15
Arcuate guide hole 151 is provided at bar 13, one end of the U-shaped bar 17 is set in arcuate guide hole 151, and can be with first
Connecting rod 12 can reciprocatingly slide in arcuate guide hole 151, and the other end of the U-shaped bar 17 is connected on handle 11, described
On third axis 104 rotation be provided with U-shaped 17 matched flap 18 of bar, set between flap 18 and the side plate 103 of mechanism rack 10
Torsional spring 19 is equipped with, the arc groove 181 to fasten with U-shaped bar 17 is provided on flap 18.As shown in Figure 1, 2, 3, described first
Connecting rod 12 is provided with arc-shaped slot 121 on one end of handle 11, and when the handle 11 rotates, U-shaped bar 17 is contradicted in arc
In shape card slot 121 and form being linked for handle 11 and first connecting rod 12.By being provided on first connecting rod and U-shaped bar phase
The card slot of engaging ensure that the reliability being driven between handle and first connecting rod.
As illustrated in fig. 1 and 2, one end of the moving contact 20 has bifurcated and is formed there are two contact site 201, each to contact
It is both provided with movable contact 21 in portion 201, there are two contact torsional spring 22, two contact torsional springs 22 for suit on second axis 102
One end contradict respectively on moving contact 20, the other end of two contact torsional springs 22 is contradicted respectively on third connecting rod 14.It is dynamic to touch
Head is using Double-breakpoint structure, and there are two contact torsional springs for setting between moving contact and third connecting rod, can ensure that moving contact exists
It in the range of certain angle, is buffered and adjusted by the dynamic balance of two contact torsional springs, when closing a floodgate, ensure two movable contacts and static contact
It can reliably be bonded, the influence that Wen Sheng brings mechanism and handle between reduction dynamic/static contact improves the circuit breaker operation mechanism
The reliability of work.
The small type circuit breaker operating mechanism has the advantages that high breaking, stable and reliable for performance, service life is long, is grasped closing a floodgate
When making, rotational handle handle drives first connecting rod, the U-shaped bar on first connecting rod slides in arc guide groove, first connecting rod band
Dynamic second connecting rod, second connecting rod driving third connecting rod action, when U-shaped bar slides into the arc convex portion of arc guide groove, is moved
Contact stopping acts, and is rotated further handle, after dead point is crossed by mechanism to be operated, U-shaped bar fastens with the arc groove on flap, third
Connecting rod driving moving contact is closed rapidly with static contact, the purpose closed a floodgate so as to fulfill moment.
Claims (4)
1. a kind of small type circuit breaker operating mechanism, it is characterised in that：The operating mechanism includes mechanism rack, is rotatably arranged on mechanism rack
First axle on handle, with handle linkage setting first connecting rod, with first connecting rod linkage setting second connecting rod, rotate set
Put the third connecting rod on the second axis of mechanism rack and with second connecting rod linkage setting, the side for being connected to third connecting rod and mechanism rack
Tension spring between plate, the moving contact with third connecting rod linkage setting, on the third axis of mechanism rack rotation be provided with tripping, mechanism rack
The 4th axis on be provided with the lock being interlocked with tripping, be provided between the lock and the side plate of mechanism rack reset draw
Spring, the first connecting rod are connect by U-shaped bar with second connecting rod, are corresponded in the tripping and arc is provided at second connecting rod
Pilot hole, one end of the U-shaped bar are set in arcuate guide hole, and can with first connecting rod can in arcuate guide hole it is reciprocal
Slide, the other end of the U-shaped bar is connected on handle, on the third axis rotation be provided with matched with U-shaped bar
Torsional spring is provided between the side plate of flap, flap and mechanism rack, the arc groove to fasten with U-shaped bar is provided on flap.
2. small type circuit breaker operating mechanism according to claim 1, it is characterised in that：One end of the moving contact has
It bifurcated and is formed there are two contact site, is both provided with movable contact on each contact site, there are two contacts for suit on second axis
Torsional spring, one end of two contact torsional springs are contradicted on moving contact respectively, and the other end of two contact torsional springs is contradicted respectively in third
On connecting rod.
3. small type circuit breaker operating mechanism according to claim 1, it is characterised in that：The one of the tripping direction lock
It is provided with clamping piece on end, the lock is towards being provided with buckling groove, the clamping piece and buckling groove on the side of tripping
It is mutually clamped and forms tripping and the clamping engagement of lock.
4. small type circuit breaker operating mechanism according to claim 1, it is characterised in that：The first connecting rod is close to handle
One end on be provided with arc-shaped slot, when the handle rotates, U-shaped bar contradicts in arc-shaped slot and forms handle and first
Connecting rod is linked.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721852729.7U CN207558723U (en) | 2017-12-26 | 2017-12-26 | Small type circuit breaker operating mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721852729.7U CN207558723U (en) | 2017-12-26 | 2017-12-26 | Small type circuit breaker operating mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207558723U true CN207558723U (en) | 2018-06-29 |
Family
ID=62660625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721852729.7U Active CN207558723U (en) | 2017-12-26 | 2017-12-26 | Small type circuit breaker operating mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207558723U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10991535B2 (en) | 2018-12-24 | 2021-04-27 | Xiamen Hongfa Electrical Safety & Controls Co., Ltd. | Miniature circuits breaker operating mechanism and miniature circuit breaker |
| CN114093729A (en) * | 2021-11-12 | 2022-02-25 | 国网江苏省电力有限公司盐城供电分公司 | Tripping mechanism suitable for circuit breaker |
-
2017
- 2017-12-26 CN CN201721852729.7U patent/CN207558723U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10991535B2 (en) | 2018-12-24 | 2021-04-27 | Xiamen Hongfa Electrical Safety & Controls Co., Ltd. | Miniature circuits breaker operating mechanism and miniature circuit breaker |
| CN114093729A (en) * | 2021-11-12 | 2022-02-25 | 国网江苏省电力有限公司盐城供电分公司 | Tripping mechanism suitable for circuit breaker |
| CN114093729B (en) * | 2021-11-12 | 2024-07-19 | 国网江苏省电力有限公司盐城供电分公司 | Tripping mechanism suitable for circuit breaker |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |