CN206441678U - Miniature circuit breaker - Google Patents
Miniature circuit breaker Download PDFInfo
- Publication number
- CN206441678U CN206441678U CN201720036575.8U CN201720036575U CN206441678U CN 206441678 U CN206441678 U CN 206441678U CN 201720036575 U CN201720036575 U CN 201720036575U CN 206441678 U CN206441678 U CN 206441678U
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- lock
- circuit breaker
- housing
- bimetallic element
- catch
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Abstract
A kind of miniature circuit breaker, including housing, handle is provided with housing, the operating mechanism and bimetallic element being connected with handle, described operating mechanism includes tripping and the lock that overlap joint coordinates, described bimetallic element, which is arranged between the side wall of housing and lock, is used for delayed releasing, groove is provided with described side wall, described groove and the variant part of bimetallic element are oppositely arranged, described variant part can flexural deformation and drive lock by tripping unblock make circuit breaker tripping, and variant part is always positioned between groove and lock during bending is until return to initial position.The utility model on housing by opening up groove, it not only reasonably make use of the space of housing, the movable scope of bimetallic element is added simultaneously, it is to avoid the problem of appearance when adjusting bimetallic element to appropriate initial position with housing interference or insufficient space.
Description
Technical field
The utility model is related to Low Voltage Electrical Apparatus, particularly a kind of miniature circuit breaker.
Background technology
Bimetallic element in miniature circuit breaker is used to realize its delay protection function, when overload current flows through bimetallic member
Generated heat after part flexural deformation, promote the operating mechanism in miniature circuit breaker to thread off, after breaker disconnecting circuit, bimetallic element
Cooling returns to initial position, therefore bimetallic element needs enough scopes of activities, with the miniaturization of breaker, function
It is less and less using space in enhancing, shell, ever more important rationally is utilized to outer casing space.But it is existing small-sized disconnected
Road device is not high enough to the utilization rate of its outer casing space, especially can when adjusting bimetallic element position to appropriate initial position
It can encounter shell, appropriate initial position is notably unable to reach, so as to have impact on the delay adjustable extent of miniature circuit breaker
And overload protection function.
Utility model content
The purpose of this utility model is to overcome the defect of prior art, and there is provided one kind is simple in construction, easy to process, reliable
The high miniature circuit breaker of property.
To achieve the above object, the utility model employs following technical scheme：
A kind of miniature circuit breaker, including housing 1, the operating mechanism 3 being connected in housing 1 provided with handle 2, with handle 2
And bimetallic element 7, tripping 32 and lock 33 that described operating mechanism 3 coordinates including overlap joint, described bimetallic element 7
Being arranged between the side wall 11 of housing 1 and lock 33 is used for delayed releasing, and groove 111 is provided with described side wall 11, described
The variant part 71 of groove 111 and bimetallic element 7 be oppositely arranged, described variant part 71 flexural deformation and can drive lock
The unblock of tripping 32 is made circuit breaker tripping by 33, and variant part 71 in bending until position all the time during returning to initial position
Between groove 111 and lock 33.
Optionally, one end of the bimetallic element 7 extends to the lower section for the mounting hole 12 being disposed adjacent with groove 111
Variant part 71 is formed, the projection 3311 of the both sides of the variant part 71 respectively with 33 ends of groove 111 and lock is oppositely arranged.
Optionally, the side of the connecting plate 8 of the other end of the bimetallic element 7 and breaker is fixedly connected to form fixation
Portion 72, the opposite side of the connecting plate 8 is connected for being powered with the binding post 6 in housing 1.
Optionally, be disposed with magnetictrip 4 and arc-chutes 5 in the lower section of the operating mechanism 3, breaker it is quiet
Contact is arranged between magnetictrip 4 and arc-chutes 5 to be oppositely arranged with moving contact, and described operating mechanism 3 drives moving contact
Contact or separate to realize the break-make of circuit with static contact.
Optionally, described magnetictrip 4 includes yoke 41, and the side of the yoke 41 is provided with the He of the first catch 411
Second catch 412, described the first catch 411 and the second catch 412 is oppositely arranged on the two ends of the bottom plate of yoke 41 and connection；
First catch 411 is fixedly connected by connecting plate 8 with fixed part 72, and the both sides of second catch 412 are first with bimetallic respectively
Part 7 and the adjusting screw 9 being fixedly mounted in housing 1 are oppositely arranged, and described adjusting screw 9 can drive the second catch 412
Tilted to the side where bimetallic element 7, and by the first catch 411 and fixed part 72 tilt the first catch 411 so as to
Adjust the gradient of bimetallic element 7.
Optionally, described lock 33 is articulated in the lower section of handle 2 and led to by being arranged on the positioning hole at the middle part of lock 33
Cross torsion spring with handle 2 to be connected, described torsion spring can provide elastic contact force for the closure of breaker, one end of lock 33 with
Provided with the protuberance 334 being oppositely arranged with variant part 71, the magnetictrip 4 of the other end and breaker is oppositely arranged, described convex
Go out the side in portion 334 provided with the type muscle 335 with torsion spring clamping, type platform 337, described type platform are additionally provided with below the positioning hole
337 coordinate with the lapping ends positioned at the tripping 32 for latching 33 sides.
Optionally, described lock 33 includes pedestal 331, bimetallic lever 332 and fixing axle 333, and described pedestal 331 leads to
Cross fixing axle 333 to be articulated on housing 1, described bimetallic lever 332 is arranged on pedestal 331 by fixing axle 333, and gold
One end of category lever 332 is oppositely arranged between the armature of the magnetictrip 4 of bimetallic element 7 and breaker.
Optionally, described pedestal 331 includes projection 3311, boss 3312, axis hole 3313 and convex tendon 3314, and described is convex
Play 3311 to be arranged on the top of pedestal 331 and be oppositely arranged with variant part 71, the boss 3312 is arranged on the bottom of pedestal 331
Portion is simultaneously abutted against with the end of tripping 32, and the middle part that described axis hole 3313 is arranged on pedestal 331 is used to install fixing axle 333,
Described convex tendon 3314 be arranged on the side wall of pedestal 331 and convex tendon 3314 one end protrude lock 33 set with installed in hand
Torsion spring clamping on handle 2.
Optionally, the contact that described operating mechanism 3 also includes being articulated on housing 1 supports 34, and the contact supports 34
One end be hinged by U-shaped lever 31 and handle 2, the other end is connected with the moving contact of breaker so as to constituting breaker operator
Support that 34 are engaged with lock 33 and contact respectively in mechanism double leval jib, the two ends of the tripping 32.
Optionally, the lower section of the mounting hole 12, which is additionally provided with, is arranged side by side multiple scales 13, and described scale 13 is with installing
The hole wall in hole 12 is disposed adjacent and is located at the top of variant part 71.
Miniature circuit breaker of the present utility model not only reasonably make use of the sky of housing by opening up groove on housing
Between, while add the movable scope of bimetallic element, it is to avoid when adjusting bimetallic element to appropriate initial position
The problem of occurring with housing interference or insufficient space, so as to add breaker delay adjustable extent, improves prolonging for breaker
When defencive function reliability.
Brief description of the drawings
Fig. 1 is overall structure diagram of the present utility model；
Fig. 2 is the structural representation of another embodiment of lock of the present utility model；
Fig. 3 is the structural representation of the pedestal latched in Fig. 3.
Embodiment
Embodiment of the present utility model is provided below in conjunction with accompanying drawing 1 to 3, small-sized open circuit of the present utility model is further illustrated
Implement body embodiment.Miniature circuit breaker of the present utility model is not limited to the following description.
As shown in figure 1, the miniature circuit breaker in the utility model includes housing 1, handle 2 and handle are provided with housing 1
2 operating mechanisms 3 and bimetallic element 7 being connected, the end and one end that described handle 2 is articulated in housing 1 passes through shell
Body 1 is used to operate, and described operating mechanism 3 includes tripping 32 and the lock 33 that overlap joint coordinates, and described bimetallic element 7 is set
It is used for delayed releasing between the side wall 11 and lock 33 of housing 1, groove 111 is provided with described side wall 11, described is recessed
The variant part 71 of groove 111 and bimetallic element 7 is oppositely arranged, and described variant part 71 can generate heat in overload flexural deformation and to be driven
The unblock of tripping 32 is made circuit breaker tripping by dynamic lock 33, and variant part 71 is bent in heating until cooling returns to initial position
During be always positioned at groove 111 and lock 33 between.The utility model is not only closed by opening up groove 111 on housing 1
Reason make use of the space of housing 1, while add the movable scope of bimetallic element 7, it is to avoid in regulation bimetallic member
Occur with housing 1 interfering or the problem of insufficient space during part 7 to appropriate initial position, so that it is adjustable to add breaker delay
Scope, improves the reliability of the delay protection function of breaker.
Specifically, one end of the bimetallic element 7 extends to the lower section for the mounting hole 12 being disposed adjacent with groove 111
Form variant part 71, described mounting hole 12 be arranged on the upper end pin of housing 1 be used for be arranged on housing 1 on cap it is connected
Connect；Projection 3311 of the both sides of the variant part 71 respectively with 33 ends of groove 111 and lock is oppositely arranged, the bimetallic member
The side of the other end of part 7 and the connecting plate 8 of breaker is fixedly connected to form fixed part 72, the opposite side of the connecting plate 8 with
Binding post 6 in housing 1 is connected for being powered, when overload current flowed through by binding post 6 and connecting plate 8 it is double
During hardware 7, bimetallic element 7 heating enable variant part 71 with fixed part 72 be fixing point occur bending and deformation until
Variant part 71 stretches into groove 111 or makes circuit breaker tripping by the unblock of the driving of projection 3311 lock 33.
As shown in figure 1, described lock 33 is articulated in the lower section of handle 2 by being arranged on the positioning hole at the middle part of lock 33
And be connected by torsion spring with handle 2, described torsion spring can provide elastic contact force, the one of lock 33 for the closure of breaker
End with provided with the protuberance 334 that is oppositely arranged with variant part 71, the magnetictrip 4 of the other end and breaker, which is oppositely arranged, to be used for
Instantaneous trip, the side of the protuberance 334 is provided with below the type muscle 335 with torsion spring clamping, the positioning hole and is additionally provided with type
Platform 337, described type platform 337 and the lapping ends of the tripping 32 positioned at 33 sides of lock coordinate to form releasably engageable machinery
Linkage structure.As shown in Fig. 2, another preferred embodiment of lock 33, described lock 33 includes pedestal 331, bimetallic lever
332 and fixing axle 333, described pedestal 331 is articulated on housing 1 by fixing axle 333, described bimetallic lever 332 it is logical
Fixing axle 333 is crossed to be rotatably installed on pedestal 331, and one end of bimetallic lever 332 is oppositely arranged on bimetallic element 7 with breaking
Between the armature of the magnetictrip 4 of road device, when have overload current by when, the magnetictrip 4 hits bimetallic lever 332
It is set of short duration with bimetallic element 7 to contact and drive the unblock of lock 33 to make the instantaneous trip of tripping 32.This preferred embodiment is by inciting somebody to action
Lock 33 is redesigned as buckle structure with pedestal 331 and bimetallic lever 332, by make bimetallic lever 332 with
The bimetallic element 7 that high temperature can be produced during disjunction high current is in contact, and effectively solves the problems, such as the melting of lock 33, and improves
The performance of breaker.
Specifically, described fixing axle 333 is fixedly mounted on housing 1 through pedestal 331, described pedestal 331 is with solid
It is pivotally connected centered on dead axle 333, one end of the bimetallic lever 332 is arranged in pedestal 331 and is rotatably assorted with fixing axle 333,
The other end protrudes pedestal 331 and is oppositely arranged with the armature of magnetictrip 4, when breaker is by high current, electromagnetic trip
The coil of device 4, which produces magnetic field, to be made armature overcome spring movement and hits the end of bimetallic lever 332, and bimetallic lever 332 is with solid
Rotated centered on dead axle 333 and being rotated with moving base 331 unlocks lock 33.
As shown in figure 3, described pedestal 331 includes projection 3311, boss 3312, axis hole 3313 and convex tendon 3314, it is described
Projection 3311 be arranged on pedestal 331 top and with variant part 71 be oppositely arranged in 71 heated bending of variant part and its
It is in contact, the boss 3312 is arranged on the bottom of pedestal 331 and abutted against with the end of tripping 32 for tripping 33 to be pinned
Anti- skidproof buckle, the middle part that described axis hole 3313 is arranged on pedestal 331 is used to install fixing axle 333, and described fixing axle 333 is led to
Cross axis hole 3313 to be fixedly mounted on housing 1 and be connected with the rotation of pedestal 331 through pedestal 331, described convex tendon 3314 is set
On the side wall of pedestal 331 and one end of convex tendon 3314 protrudes lock 33 and set and the torsion spring clamping on the handle 2.
The contact that described operating mechanism 3 also includes being articulated on housing 1 supports 34, and the contact supports 34 one end
It is hinged by U-shaped lever 31 and handle 2, the other end is connected to constitute circuit breaker operation mechanism four with the moving contact of breaker
Connecting rod, the two ends of the tripping 32 support 34 to be engaged with lock 33 and contact respectively to be used for after the unblock of lock 33 by touching
Head supports that 34 disconnect circuit trip.
The arc-chutes 5 for arc extinguishing are additionally provided with described housing 1, described magnetictrip 4 and arc-chutes 5 is set successively
Put in the lower section of operating mechanism 3, the static contact of breaker is arranged on relative with moving contact between magnetictrip 4 and arc-chutes 5
Set, described operating mechanism 3 drives moving contact to contact or separate with static contact to realize the break-make of circuit.
Specifically, described magnetictrip 4 includes yoke 41, the coil 42 in yoke 41 and is arranged on coil
Armature in 42, described coil 42 is connected for being powered by brush wire with variant part 71, described armature and lock 33
End be oppositely arranged for instantaneous trip, when breaker is by overload current, the coil 42 of magnetictrip 4 produces magnetic field
Make armature overcome the spring movement in coil 42 and hit lock 33 end unlock lock 33, the side of the yoke 41 is set
There are the first catch 411 and the second catch 412, described the first catch 411 and the second catch 412 is oppositely arranged on the bottom of yoke 41
The two ends of plate and connection, the first catch 411 are fixedly connected by connecting plate 8 with fixed part 72, the both sides of second catch 412
It is oppositely arranged respectively with bimetallic element 7 and the adjusting screw being fixedly mounted in housing 19, described adjusting screw 9 can drive
Dynamic second catch 412 is tilted to the side where bimetallic element 7, and makes first gear by the first catch 411 and fixed part 72
Piece 411 tilts the gradient so as to adjust bimetallic element 7 until appropriate initial position, described variant part 71 is in bimetallic
The optional position between groove 111 and projection 3311 can be always positioned in the action process of element 7, rather than is only limitted to side wall
Optional position between 11 and projection 3311, and then breaker delay adjustable extent is added, improve deferred action characteristic.
The lower section of the mounting hole 12, which is additionally provided with, is arranged side by side multiple scales 13, described scale 13 and the hole of mounting hole 12
Wall is disposed adjacent and is located at the top of variant part 71, is easy to carry out initial adjustment to the position of bimetallic element 7 during assembling.
Above content is to combine specific preferred embodiment further detailed description of the utility model, it is impossible to
Assert that specific implementation of the present utility model is confined to these explanations.For the ordinary skill of the utility model art
For personnel, without departing from the concept of the premise utility, some simple deduction or replace can also be made, should all be regarded
To belong to protection domain of the present utility model.
Claims (10)
1. a kind of miniature circuit breaker, including housing (1), the operation being connected in housing (1) provided with handle (2), with handle (2)
Mechanism (3) and bimetallic element (7), described operating mechanism (3) include tripping (32) and the lock (33) that overlap joint coordinates, institute
The bimetallic element (7) stated, which is arranged between the side wall (11) of housing (1) and lock (33), is used for delayed releasing, and its feature exists
In：Groove (111), described groove (111) and the variant part (71) of bimetallic element (7) are provided with described side wall (11)
It is oppositely arranged, described variant part (71) flexural deformation and can drive lock (33) to take off breaker tripping (32) unblock
Button, and variant part (71) is always positioned at groove (111) and lock (33) during bending is until return to initial position
Between.
2. miniature circuit breaker according to claim 1, it is characterised in that：One end of the bimetallic element (7) is extended to
The variant part formed below (71) for the mounting hole (12) being disposed adjacent with groove (111), the both sides difference of the variant part (71)
It is oppositely arranged with groove (111) and the projection (3311) for latching (33) end.
3. miniature circuit breaker according to claim 2, it is characterised in that：The other end of the bimetallic element (7) is with breaking
The side of the connecting plate (8) of road device is fixedly connected to form fixed part (72), and the opposite side of the connecting plate (8) is with being arranged on housing
(1) binding post (6) in is connected for being powered.
4. miniature circuit breaker according to claim 1, it is characterised in that：Set successively in the lower section of the operating mechanism (3)
Magnetictrip (4) and arc-chutes (5) are equipped with, the static contact of breaker is arranged between magnetictrip (4) and arc-chutes (5)
It is oppositely arranged with moving contact, described operating mechanism (3) drives moving contact to contact or separate with static contact to realize circuit
Break-make.
5. miniature circuit breaker according to claim 4, it is characterised in that：Described magnetictrip (4) includes yoke
(41), the side of the yoke (41) is provided with the first catch (411) and the second catch (412), described the first catch (411) and
Second catch (412) is oppositely arranged on the two ends of the bottom plate of yoke (41) and connection；First catch (411) passes through connecting plate (8)
It is fixedly connected with fixed part (72), the both sides of second catch (412) are respectively with bimetallic element (7) and being fixedly mounted on shell
Adjusting screw (9) in body (1) is oppositely arranged, and described adjusting screw (9) can drive the second catch (412) to bimetallic member
Side where part (7) is tilted, and tilts the first catch (411) to adjust by the first catch (411) and fixed part (72)
The gradient of whole bimetallic element (7).
6. miniature circuit breaker according to claim 1, it is characterised in that：Described lock (33) is by being arranged on lock
(33) positioning hole in the middle part of is articulated in the lower section of handle (2) and is connected by torsion spring with handle (2), and described torsion spring can be
The closure of breaker provides elastic contact force, latches the one end of (33) with being provided with the protuberance being oppositely arranged with variant part (71)
(334), the magnetictrip (4) of the other end and breaker is oppositely arranged, and the side of the protuberance (334) is provided with and torsion spring card
Type platform (337) is additionally provided with below the type muscle (335) connect, the positioning hole, described type platform (337) is with being located at lock (33) one
The lapping ends of the tripping (32) of side coordinate.
7. miniature circuit breaker according to claim 1, it is characterised in that：Described lock (33) includes pedestal (331), gold
Belong to lever (332) and fixing axle (333), described pedestal (331) is articulated on housing (1) by fixing axle (333), described
Bimetallic lever (332) is arranged on pedestal (331) by fixing axle (333), and one end of bimetallic lever (332) is oppositely arranged
Between the armature of bimetallic element (7) and the magnetictrip (4) of breaker.
8. miniature circuit breaker according to claim 7, it is characterised in that：Described pedestal (331) include raised (3311),
Boss (3312), axis hole (3313) and convex tendon (3314), described projection (3311) be arranged on the top of pedestal (331) and with change
Shape portion (71) is oppositely arranged, and the boss (3312) is arranged on the bottom of pedestal (331) and abutted against with the end of tripping (32),
The middle part that described axis hole (3313) is arranged on pedestal (331) is used to install fixing axle (333), and described convex tendon (3314) is set
On the side wall of pedestal (331) and one end of convex tendon (3314) protrudes lock (33) and set and the torsion spring on the handle (2)
Clamping.
9. miniature circuit breaker according to claim 1, it is characterised in that：Described operating mechanism (3) also includes being articulated in
Contact on housing (1) supports (34), and the contact supports the one end of (34) to be hinged by U-shaped lever (31) with handle (2), separately
One end is connected to constitute circuit breaker operation mechanism double leval jib, the two ends difference of the tripping (32) with the moving contact of breaker
(34) are supported to be engaged with lock (33) and contact.
10. miniature circuit breaker according to claim 2, it is characterised in that：It is additionally provided with simultaneously below the mounting hole (12)
Row sets multiple scales (13), and described scale (13) is disposed adjacent with the hole wall of mounting hole (12) and is located at variant part (71)
Top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720036575.8U CN206441678U (en) | 2017-01-12 | 2017-01-12 | Miniature circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720036575.8U CN206441678U (en) | 2017-01-12 | 2017-01-12 | Miniature circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206441678U true CN206441678U (en) | 2017-08-25 |
Family
ID=59642391
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720036575.8U Active CN206441678U (en) | 2017-01-12 | 2017-01-12 | Miniature circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206441678U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107610987A (en) * | 2017-09-22 | 2018-01-19 | 嘉兴市加控电气设备制造有限公司 | A kind of miniature circuit breaker |
-
2017
- 2017-01-12 CN CN201720036575.8U patent/CN206441678U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107610987A (en) * | 2017-09-22 | 2018-01-19 | 嘉兴市加控电气设备制造有限公司 | A kind of miniature circuit breaker |
| CN107610987B (en) * | 2017-09-22 | 2020-04-24 | 嘉兴市加控电气设备制造有限公司 | Small-sized circuit breaker |
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| GR01 | Patent grant |