CN216562991U - Static contact structure of direct current circuit breaker - Google Patents
Static contact structure of direct current circuit breaker Download PDFInfo
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- CN216562991U CN216562991U CN202122310063.5U CN202122310063U CN216562991U CN 216562991 U CN216562991 U CN 216562991U CN 202122310063 U CN202122310063 U CN 202122310063U CN 216562991 U CN216562991 U CN 216562991U
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- circuit breaker
- static contact
- direct current
- insulating
- current circuit
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Abstract
The utility model relates to an improved structure of a static contact of a circuit breaker, in particular to a static contact structure of a direct-current circuit breaker. Comprises a silver point, an insulating sheet, an arc angle, an insulating groove, a connector and a radiating groove. The static contact can directly connect two poles of the circuit breaker in series without using other auxiliary conductors, reduces connecting points of a conductive loop, improves the reliability of multi-pole series connection, reduces quality risk points and improves the safety of products.
Description
Technical Field
The utility model relates to an improved structure of a static contact of a circuit breaker, in particular to a static contact structure of a direct-current circuit breaker.
Background
The plastic case type circuit breaker has the main structure that: the static contact is an important part in a conductive system of the plastic shell type circuit breaker.
Conventional circuit breakers are 3-pole and 4-pole profiles, while dc circuit breakers are mostly adapted to use dc circuit systems with multiple poles of the circuit breaker in series. The multi-pole series connection generally adopts a screw fastening mode, and two static contacts are connected by using a connecting plate. Mainly comprises a static contact, a connecting plate and a screw. Because this series connection has increased two tie points, lead to the loop resistance grow, and then lead to when the circuit breaker normally worked, the product temperature rise can rise, influences product life and security.
SUMMERY OF THE UTILITY MODEL
The utility model mainly solves the defects in the prior art, and provides a static contact structure of a direct current circuit breaker, which improves the structure of a direct current circuit breaker with multiple series poles, reduces the temperature rise of products, and improves the safety and the reliability of the products.
The technical problem of the utility model is mainly solved by the following technical scheme:
the utility model provides a direct current circuit breaker static contact structure, includes the circuit breaker body, the circuit breaker body in be equipped with a plurality of static contacts, the static contact is two liang of a set of, two adjacent static contacts become the integration and distribute.
Preferably, the two fixed contacts are connected in series through the connector, an insulating groove is formed in each fixed contact, an insulating sheet embedded with the insulating groove is arranged in each insulating groove, silver dots are arranged on the upper portions of the fixed contacts, and the inner ends of the silver dots are arc angles distributed in an upward inclined mode.
Preferably, the silver point is located the top of insulating piece, the insulating piece be the shape of bending and the one end of insulating piece upwards extends.
Preferably, the connecting body is vertically distributed upwards, and the outer wall of the connecting body is provided with uniformly distributed heat dissipation grooves.
The improved scheme is that two fixed contacts are designed into a whole, a connecting plate for short circuit is omitted, connecting points in a conductive system are reduced, the loop resistance of the circuit breaker is reduced, and the purpose of reducing the temperature rise of the circuit breaker is achieved. The improved static contact is additionally provided with the heat dissipation groove on the outer side edge surface, so that the heat dissipation surface area is increased, and the temperature rise performance of the product is also improved. Through the connector of bending upwards, increased the wire sectional area, improved the current-carrying capacity of static contact. An insulating groove is reserved in the middle of the static contact, and an insulating sheet can be inserted, so that the repulsion electrodynamic force of the contact is improved.
The utility model provides a static contact structure of a direct current breaker, which simplifies the number of parts and reduces connection points by improving a static contact, and particularly realizes the working requirement of reducing the temperature rise of a product according to the characteristic of multi-pole series connection of the direct current breaker.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural diagram of a middle fixed contact.
Detailed Description
The technical scheme of the utility model is further specifically described by the following embodiments and the accompanying drawings.
Example 1: as shown in the figure, a direct current circuit breaker static contact structure, includes circuit breaker body 1, circuit breaker body 1 in be equipped with a plurality of static contacts 2, static contact 2 is two liang of a set of, two adjacent static contacts 2 become the integration and distribute.
The two static contacts 2 are connected in series through a connector 3, an insulating groove 4 is arranged in each static contact 2, an insulating sheet 5 which is embedded with the insulating groove 4 is arranged in each insulating groove 4, a silver point 6 is arranged on the upper portion of each static contact 2, and the inner end of each silver point 6 is an arc angle 7 which is distributed in an upward inclined mode.
The connector 3 be the vertical form distribution that makes progress, the outer wall of connector 3 be equipped with evenly distributed's radiating groove 8.
Claims (4)
1. The utility model provides a direct current circuit breaker static contact structure, includes circuit breaker body (1), circuit breaker body (1) in be equipped with a plurality of static contacts (2), its characterized in that: the static contacts (2) are grouped in pairs, and the two adjacent static contacts (2) are integrally distributed.
2. The static contact structure of the direct current circuit breaker according to claim 1, characterized in that: two static contacts (2) are connected in series through a connector (3), an insulating groove (4) is arranged in each static contact (2), an insulating sheet (5) which is embedded with the insulating groove (4) is arranged in each insulating groove (4), a silver point (6) is arranged on the upper portion of each static contact (2), and the inner end of each silver point (6) is an arc angle (7) which is distributed in an upward inclined mode.
3. The static contact structure of the direct current circuit breaker according to claim 2, characterized in that: silver point (6) be located the top of insulating piece (5), insulating piece (5) be the one end of bending form and insulating piece (5) upwards extend.
4. The static contact structure of the direct current circuit breaker according to claim 2, characterized in that: the connector (3) be the vertical form distribution that makes progress, the outer wall of connector (3) be equipped with evenly distributed's radiating groove (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122310063.5U CN216562991U (en) | 2021-09-23 | 2021-09-23 | Static contact structure of direct current circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122310063.5U CN216562991U (en) | 2021-09-23 | 2021-09-23 | Static contact structure of direct current circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216562991U true CN216562991U (en) | 2022-05-17 |
Family
ID=81564523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122310063.5U Active CN216562991U (en) | 2021-09-23 | 2021-09-23 | Static contact structure of direct current circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216562991U (en) |
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2021
- 2021-09-23 CN CN202122310063.5U patent/CN216562991U/en active Active
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