CN203434107U - Moulded case circuit breaker - Google Patents
Moulded case circuit breaker Download PDFInfo
- Publication number
- CN203434107U CN203434107U CN201320402059.4U CN201320402059U CN203434107U CN 203434107 U CN203434107 U CN 203434107U CN 201320402059 U CN201320402059 U CN 201320402059U CN 203434107 U CN203434107 U CN 203434107U
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- China
- Prior art keywords
- contact
- rotor
- spring
- moving contact
- cover body
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- Expired - Fee Related
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Abstract
The utility model discloses a moulded case circuit breaker, comprising a moving contact assembly and a contact assembly. A rotor is provided with an opening allowing a moving contact to rotate independently during the current limiting operation. The moving contact is arranged in the opening and is rotatably connected with the rotor through a rotating shaft. Two ends of the moving contact extend out of the opening. Each pair of first springs is arranged in a central symmetry manner. One end of each first spring is fixed on the rotor through a connection rod, and the other end of the first spring is connected to the rotor in a linear motion manner through the connection rod. The contact assembly comprises a contact. The contact is arranged in a cover body. The cover body is movably connected with a contact support member. The contact support member is connected with the contact through a second spring. The contact is fixed on the cover body through a fixed shaft. The moulded case circuit breaker carries out current limiting operations according to the moving contact assembly, and the separation of the moving contact from a static contact is accelerated and is irreversible, so that a current limiting function of the circuit breaker is improved.
Description
Technical field
The utility model relates to a kind of circuit breaker, more precisely a kind of circuit breaker of plastic casing.
Background technology
Breaker of plastic casing is the protective device in low-voltage distribution system, plays connection, the normal workpiece electric current of disjunction and the automatically effect of fast shut-off fault current when circuit breaks down in low-voltage distribution system.The moving contact component of the breaker of plastic casing of prior art has following problem.When moving contact is separated with fixed contact, the elastic-restoring force of spring increases, and moving contact contacts with fixed contact because this restoring force becomes again thus.Again separated with therebetween of contact again when this causes short circuit between contact, thus produce continuously electric arc and can cause the grievous injury of breaker of plastic casing and load equipment.
Utility model content
The purpose of this utility model is to provide breaker of plastic casing, and it can solve above-mentioned shortcoming of the prior art.
The utility model is by the following technical solutions:
, comprising:
One moving contact component, it comprises rotor, moving contact, rotation axis, connecting rod and spring, described rotor is provided with for allow the opening of moving contact independent rotation when current limliting operates, described moving contact is arranged in this opening, and be rotationally connected by rotation axis and rotor, and the two ends of moving contact are visited outside this opening, described spring is connected with rotor by connecting rod, described spring is provided with two pairs, be separately positioned on two side surfaces of rotor, every pair of described spring center is symmetrical arranged, each described spring one end is fixed on rotor by connecting rod, the other end can be connected on rotor by connecting rod rectilinear motion,
One contact assembly, it comprises contact, and described contact is located at that a cover body is inner, and described cover body is flexibly connected a contact supporter, between described contact supporter and described contact, by a spring, is connected, and described contact is fixed on described cover body by a fixed axis.
Described rotor is provided with the through hole passing for connecting rod and the chute moving for link linear, and described through hole is provided with two, and is diagonal angle setting, and described chute is provided with two, and is diagonal angle setting.
Described cover body is fixedly comprised of screw some cover body assemblies
Described spring is fixed in a lock chamber.
The utility model has the advantages that: by carry out current limliting when operation according to the moving contact component of this breaker of plastic casing, moving contact is accelerated from the separation of fixed contact, thus and the current-limiting function of irreversible improvement circuit-breaker.
Accompanying drawing explanation
Below in conjunction with embodiment and accompanying drawing, the utility model is elaborated, wherein:
Fig. 1 is the structural representation of contact assembly of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, further set forth embodiment of the present utility model:
A kind of breaker of plastic casing, comprise: a moving contact component and a contact assembly, described moving contact component comprises rotor, moving contact, rotation axis, connecting rod and the first spring, described rotor is provided with for allow the opening of moving contact independent rotation when current limliting operates, described moving contact is arranged in this opening, and be rotationally connected by rotation axis and rotor, and the two ends of moving contact are visited outside this opening, the first described spring is connected with rotor by connecting rod, the first described spring is provided with two pairs, be separately positioned on two side surfaces of rotor, every pair of described first spring center is symmetrical arranged, described each first spring one end is fixed on rotor by connecting rod, the other end can be connected on rotor by connecting rod rectilinear motion, described contact assembly comprises contact 1, described contact is located at cover body 2 inside, described cover body is flexibly connected a contact supporter 4, between described contact supporter and described contact, by one second spring, is connected 6, and described contact is fixed on described cover body by a fixed axis 3.
Described rotor is provided with the through hole passing for connecting rod and the chute moving for link linear, and described through hole is provided with two, and is diagonal angle setting, and described chute is provided with two, and is diagonal angle setting.
Described cover body is fixedly comprised of screw 5 some cover body assemblies.
Described the second spring is fixed in a lock chamber.
The utility model is by carrying out current limliting when operation according to the moving contact component of this breaker of plastic casing, moving contact is accelerated from the separation of fixed contact, thus and the current-limiting function of irreversible improvement circuit-breaker.
The utility model is all provided with two centrosymmetric the first springs on each side surface of rotor, and first spring one end is fixed on rotor by connecting rod, the other end can be connected on rotor by connecting rod rectilinear motion, therefore can effectively prevent from returning to from the moving contact of fixed contact separation the state contacting with this fixed contact, and can in open circuit state, accelerate moving contact from the separation of fixed contact; Can keep moving contact from the state of fixed contact separation until carry out trip operation by tripping mechanism; Can in closed circuit state, stably keep the contact condition between the fixed contact of fixed contact and the moving contact of moving contact; By two side surfaces at rotor, the first spring is installed, can simply and rapidly the first spring be assembled to rotating shaft rod; Even if can not accurately about moving contact symmetry in the situation that, by being provided for the long kidney-shaped hole through rotation axis at moving contact center, keep equably the contact between moving contact and fixed contact at fixed contact; Compare with other structures, between rotor and moving contact, without being connected with connecting rod, structure is more simple and reliable.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection range of the present utility model.
Claims (4)
1. a breaker of plastic casing, is characterized in that, comprising:
One moving contact component, it comprises rotor, moving contact, rotation axis, connecting rod and the first spring, described rotor is provided with for allow the opening of moving contact independent rotation when current limliting operates, described moving contact is arranged in this opening, and be rotationally connected by rotation axis and rotor, and the two ends of moving contact are visited outside this opening, the first described spring is connected with rotor by connecting rod, the first described spring is provided with two pairs, be separately positioned on two side surfaces of rotor, every pair of described first spring center is symmetrical arranged, described each first spring one end is fixed on rotor by connecting rod, the other end can be connected on rotor by connecting rod rectilinear motion,
One contact assembly, it comprises contact, and described contact is located at that a cover body is inner, and described cover body is flexibly connected a contact supporter, between described contact supporter and described contact, by one second spring, is connected, and described contact is fixed on described cover body by a fixed axis.
2. according to a kind of breaker of plastic casing described in claim 1, it is characterized in that, described rotor is provided with the through hole passing for connecting rod and the chute moving for link linear, described through hole is provided with two, and be diagonal angle setting, described chute is provided with two, and be diagonal angle setting.
3. a kind of breaker of plastic casing according to claim 2, is characterized in that, described cover body is fixedly comprised of screw some cover body assemblies.
4. a kind of breaker of plastic casing according to claim 3, is characterized in that, described the second spring is fixed in a lock chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320402059.4U CN203434107U (en) | 2013-07-08 | 2013-07-08 | Moulded case circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320402059.4U CN203434107U (en) | 2013-07-08 | 2013-07-08 | Moulded case circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203434107U true CN203434107U (en) | 2014-02-12 |
Family
ID=50063131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320402059.4U Expired - Fee Related CN203434107U (en) | 2013-07-08 | 2013-07-08 | Moulded case circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203434107U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108389736A (en) * | 2018-05-09 | 2018-08-10 | 佳电气有限公司 | Moving contact component |
-
2013
- 2013-07-08 CN CN201320402059.4U patent/CN203434107U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108389736A (en) * | 2018-05-09 | 2018-08-10 | 佳电气有限公司 | Moving contact component |
| CN108389736B (en) * | 2018-05-09 | 2024-02-13 | 佳一电气有限公司 | Moving contact assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140212 Termination date: 20140708 |
|
| EXPY | Termination of patent right or utility model |