CN212322944U - Contact spring protection device of air circuit breaker - Google Patents
Contact spring protection device of air circuit breaker Download PDFInfo
- Publication number
- CN212322944U CN212322944U CN202020992118.8U CN202020992118U CN212322944U CN 212322944 U CN212322944 U CN 212322944U CN 202020992118 U CN202020992118 U CN 202020992118U CN 212322944 U CN212322944 U CN 212322944U
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- Prior art keywords
- contact
- spring
- support
- contact spring
- circuit breaker
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Abstract
The utility model belongs to the technical field of the circuit breaker technique and specifically relates to an air circuit breaker's contact spring protection device. The utility model provides an air circuit breaker's contact spring protection device, includes the moving contact, the contact supports, contact spring, its characterized in that: the bottom of the moving contact is provided with a static contact, the back end of the top of the moving contact is connected with the back end of the contact support, a support and a contact spring are sequentially arranged between the front end of the contact support and the moving contact from front to back, one end of the support is connected with the top of the moving contact, the other end of the support is connected with one end of the spring, the other end of the spring is connected with the contact support, one end of the contact spring is connected with the top of the moving contact, and the other end of the contact spring is connected with the contact support. Compared with the prior art, simple structure, easily processing adds spring and support on the basis that current contact supported, and the spring drives the support and prevents the particle entering contact spring when closing the separating brake, has effectively reduced contact spring's damage degree, realizes the protection to contact spring.
Description
Technical Field
The utility model belongs to the technical field of the circuit breaker technique and specifically relates to an air circuit breaker's contact spring protection device.
Background
The air circuit breaker is a switch used for a low-voltage distribution network, and is mainly used for distributing electric energy and protecting lines and power supply equipment from damage caused by faults such as overload, undervoltage, short circuit, single-phase grounding and the like; meanwhile, the motor is also used for the protection of the motor against the infrequent starting, the overload and the short circuit, thereby ensuring the safety of a power grid and equipment.
When the breaker is in short-circuit fault or is in short-circuit test, electric arcs can be generated between the moving contact and the static contact in the opening process of the breaker, and the generated electric arc energy is also large due to the extremely large short-circuit current. And the high temperature characteristic of the electric arc enables the electric arc to form particles after being cooled, and the particles can move into the contact spring under certain acting force, so that the contact spring is damaged.
Therefore, the contact spring protection device of the air circuit breaker is designed, the spring and the support are additionally arranged, the spring drives the support to prevent particles from entering the contact spring when the switch is switched on and off, the damage degree of the contact spring is effectively reduced, and the contact spring is protected.
Disclosure of Invention
The utility model discloses an overcome prior art not enough, provide an air circuit breaker's contact spring protection device, add spring and support, the spring drives the support and prevents the particle to get into contact spring when closing the separating brake, has effectively reduced contact spring's damage degree, realizes the protection to contact spring.
In order to realize the purpose, the contact spring protection device of the air circuit breaker comprises a moving contact, a contact support and a contact spring, and is characterized in that: the bottom of moving contact be equipped with the static contact, be located the top rear end of moving contact and connect the rear end that the contact supported, be equipped with support and contact spring in proper order after to in the past between contact support front end and the moving contact, the one end of support connect the moving contact top, the other end of support connects the one end of spring, the other end of spring is connected the contact and is supported, the moving contact top is connected to the one end of contact spring, the other end of contact spring connects the contact and supports, the structure at support middle part be rectangle sheet structure, the structure at both ends is L type structure about the support, it is equipped with a plurality of first recesses to be located the support top.
The spring and the contact spring are arranged in parallel.
The contact support bottom front end be equipped with the second recess, the structure of second recess matches with the structure of support, is equipped with first arch in the second recess, first arch department cover establishes the spring.
The front end of the bottom of the contact support is provided with a spring groove, and a contact spring is arranged in the spring groove.
The top of the moving contact is provided with a plurality of second bulges, and the structures of the second bulges are matched with the structures of the support.
Compared with the prior art, the utility model, simple structure, easily processing adds spring and support on the basis that current contact supported, and the spring drives the support and prevents the particle to get into contact spring when closing the separating brake, has effectively reduced contact spring's damage degree, realizes the protection to contact spring.
Drawings
Fig. 1 is a schematic structural diagram of the present invention during opening.
Fig. 2 is the structure schematic diagram of the utility model during closing.
Fig. 3 is a schematic structural diagram of the bracket of the present invention.
Fig. 4 is a schematic structural diagram of the contact support of the present invention.
Fig. 5 is a front view of the contact support of the present invention.
Fig. 6 is a top view of the contact support of the present invention.
Fig. 7 is a bottom view of the contact support of the present invention.
Fig. 8 is a schematic structural view of the bracket and the contact support connection according to the present invention.
Fig. 9 is a schematic structural view of the bracket, the contact support and the moving contact connection according to the present invention.
Referring to fig. 1 to 9, 1 is a moving contact, 2 is a stationary contact, 3 is a contact support, 4 is a support, 5 is a contact spring, 6 is a spring, 7 is a first groove, 8 is a spring groove, 9 is a first protrusion, 10 is a second groove, and 11 is a second protrusion.
Detailed Description
The invention will be further described with reference to the accompanying drawings.
As shown in fig. 1 to 9, a fixed contact 2 is arranged at the bottom of a movable contact 1, the fixed contact is arranged at the rear end of the top of the movable contact 1, the rear end of the top of the movable contact is connected with the rear end of a contact support 3, a support 4 and a contact spring 5 are sequentially arranged between the front end of the contact support 3 and the movable contact 1 from front to back, one end of the support 4 is connected with the top of the movable contact 1, the other end of the support 4 is connected with one end of a spring 6, the other end of the spring 6 is connected with the contact support 3, one end of the contact spring 5 is connected with the top of the movable contact 1, the other end of the contact spring 5 is connected with the contact support 3, the middle of the support 4 is of a rectangular sheet structure, the left.
The spring 6 is arranged in parallel with the contact spring 5.
The front end of the bottom of the contact support 3 is provided with a second groove 10, the structure of the second groove 10 is matched with that of the support 4, a first bulge 9 is arranged in the second groove 10, and the spring 6 is sleeved at the first bulge 9.
The front end of the bottom of the contact support 3 is provided with a spring groove 8, and a contact spring 5 is arranged in the spring groove 8.
The top of the moving contact 1 is provided with a plurality of second bulges 11, and the structures of the second bulges 11 are matched with the structure of the bracket 4.
During the specific use, when the circuit breaker is switched on, moving contact 1 moves to static contact 2 direction, moving contact 1 and static contact 2 contact in the twinkling of an eye, because moving contact 1 and contact support 3 are equipped with contact spring 5 within a definite time, can make moving contact 1 take place the bounce phenomenon, moving contact 1 compression contact spring 5 moves to contact support 3 direction this moment, thereby force support 4 one end compression spring 6 to contact support 3 direction motion, the first recess 7 of support 4 other end cooperates with the second arch 11 of moving contact 1 simultaneously, guarantee that contact spring 5 department forms the enclosure space, thereby protection contact spring 5.
When the circuit breaker is opened, the moving contact 1 moves towards the direction far away from the static contact 2, the moving contact 1 bounces under the action of the contact spring 5, at the moment, the moving contact 1 moves towards the direction far away from the contact support 3, the contact spring 5 is changed into a release state from a compression state during closing, meanwhile, the spring 6 is also changed into a release state from a compression state during closing, so that the support 4 moves towards the direction close to the moving contact 1, the support 4 is guaranteed to maintain a contact state with the moving contact 1, the contact spring 5 is enabled to form a closed space, and the contact spring 5 is protected.
During specific use, staff can set up the size of second recess 10 and support 4 according to actual use condition, chooses the spring 6 of suitable model for use. Through the cooperation of support 4, make contact spring 5 department form the enclosure.
The utility model discloses set up second recess 10 on the basis that current contact supported, through 6 linking bridge 4 of spring in the second recess 10, the motion of moving contact 1 when utilizing the circuit breaker to close the separating brake drives support 4 and moves under the effect of spring 6, prevents the particle and gets into contact spring 5, has effectively reduced contact spring 5's damage degree, realizes the protection to contact spring 5.
Claims (5)
1. The utility model provides an air circuit breaker's contact spring protection device, includes the moving contact, the contact supports, contact spring, its characterized in that: the bottom of moving contact (1) be equipped with static contact (2), be located the top rear end of moving contact (1) and connect the rear end of contact support (3), be equipped with support (4) and contact spring (5) after to in the past between contact support (3) front end and moving contact (1) in proper order, the one end of support (4) connect moving contact (1) top, the one end of the other end connecting spring (6) of support (4), the other end connecting contact support (3) of spring (6), moving contact (1) top is connected to the one end of contact spring (5), the other end connecting contact support (3) of contact spring (5), support (4) middle part the structure be rectangle sheet structure, the structure at both ends is L type structure about support (4), it is equipped with a plurality of first recess (7) to be located support (4) top.
2. A contact spring protection device of an air circuit breaker according to claim 1, wherein: the spring (6) and the contact spring (5) are arranged in parallel.
3. A contact spring protection device of an air circuit breaker according to claim 1, wherein: the contact support (3) bottom front end be equipped with second recess (10), the structure of second recess (10) matches with the structure of support (4), is equipped with first arch (9) in second recess (10), spring (6) are established to first arch (9) department cover.
4. A contact spring protection device of an air circuit breaker according to claim 1 or 3, wherein: the front end of the bottom of the contact support (3) is provided with a spring groove (8), and a contact spring (5) is arranged in the spring groove (8).
5. A contact spring protection device of an air circuit breaker according to claim 1, wherein: the top of the moving contact (1) is provided with a plurality of second bulges (11), and the structures of the second bulges (11) are matched with the structure of the bracket (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020992118.8U CN212322944U (en) | 2020-06-03 | 2020-06-03 | Contact spring protection device of air circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020992118.8U CN212322944U (en) | 2020-06-03 | 2020-06-03 | Contact spring protection device of air circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212322944U true CN212322944U (en) | 2021-01-08 |
Family
ID=74026689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020992118.8U Active CN212322944U (en) | 2020-06-03 | 2020-06-03 | Contact spring protection device of air circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212322944U (en) |
-
2020
- 2020-06-03 CN CN202020992118.8U patent/CN212322944U/en active Active
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