A circuit breaker contact
By designing single-groove and double-groove structures on the circuit breaker contact bracket, and combining connecting columns and tension springs, the problem of poor heat dissipation in traditional circuit breaker contacts is solved, achieving better heat dissipation performance and stable connection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YUEQING JINGCHAO ELECTRIC CO LTD
- Filing Date
- 2025-07-31
- Publication Date
- 2026-07-21
AI Technical Summary
The lack of gaps between adjacent contacts in the bridge-shaped contacts of traditional circuit breakers results in poor heat dissipation.
Single and double grooves are provided on both sides of the bracket to accommodate the contact pieces, and the contact pieces are connected by connecting posts and tension springs to form a gap to improve heat dissipation while ensuring the stability of the contact piece connection.
By setting single and double groove structures on the bracket, the gap between the contacts is increased, the heat dissipation effect is improved, and the stable connection of the contacts is maintained.
Smart Images
Figure CN224537034U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of circuit breakers, and in particular relates to a circuit breaker contact. Background Technology
[0002] Bridge-shaped contacts are an important component of drawer-type circuit breakers. Their structure includes a support frame, a set of contact plates on both sides of the support frame, and tension springs connecting the contact plates. Traditional bridge-shaped contacts in circuit breakers have the following disadvantages: adjacent contact plates are tightly packed together without gaps, resulting in poor heat dissipation. Utility Model Content
[0003] The technical problem to be solved by this invention is to provide a circuit breaker contact with better heat dissipation.
[0004] To solve the above problems, the technical solution adopted by this utility model includes: a bracket, a set of contact pieces disposed on both sides of the bracket, and a tension spring connecting the contact pieces. The bracket is characterized in that: the outermost ends of both sides of the bracket are provided with a single groove that can only accommodate one contact piece, and a set of double grooves that can accommodate two contact pieces are provided in the middle. The contact pieces are respectively disposed in the single groove and the double groove. The contact pieces are arranged in pairs, and each pair is provided with a connecting post on the outer side. The tension spring is disposed between the opposite connecting posts. Heat dissipation grooves are provided on both sides of the middle part of the contact piece.
[0005] The bracket includes an upper bracket and a lower bracket located at the lower end of the upper bracket. The upper bracket and the lower bracket are provided with corresponding single grooves and double grooves on both sides. The upper end of the contact piece is provided with a first positioning groove for positioning and cooperation between the single groove and the double groove.
[0006] The back of the contact piece is provided with a second positioning groove, and the connecting post is disposed in the second positioning groove.
[0007] The contact plate has heat dissipation grooves on both sides of the middle part.
[0008] The upper bracket has rivet posts on both sides, and the lower bracket has rivet holes on both sides that are riveted to the rivet posts.
[0009] The advantages of this utility model's circuit breaker contacts with better heat dissipation are as follows: By setting a single groove that can only accommodate one contact piece at the outermost end of both sides of the bracket, and a set of double grooves that can accommodate two contact pieces in the middle, the contact pieces are respectively placed in the single groove and the double groove, and then the contact pieces are placed in pairs, with a connecting post on the outer side of each pair, and a tension spring is set between the opposite connecting posts, so that gaps are generated between adjacent contact pieces, thereby improving the heat dissipation effect and ensuring the stability of the contact connection.
[0010] The present invention will be further described below with reference to the accompanying drawings. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the circuit breaker contact of this utility model; Figure 2 This is a cross-sectional view of the circuit breaker contact of this utility model; Figure 3 This is a schematic diagram of the structure of the bracket of this utility model; Figure 4 This is a schematic diagram of the structure of the contact piece of this utility model. Detailed Implementation
[0012] Reference Figure 1-4 As shown, the circuit breaker contact of this utility model includes a bracket 1, a set of contact pieces 2 disposed on both sides of the bracket 1, and a tension spring 3 connecting the contact pieces 2. The outermost ends of both sides of the bracket 1 are provided with a single groove 4 that can only accommodate one contact piece 2, and a set of double grooves 5 that can accommodate two contact pieces 2 are provided in the middle. The contact pieces 2 are respectively disposed in the single groove 4 and the double grooves 5. The contact pieces 2 are arranged in pairs, and each pair has a connecting post 6 on its outer side. The tension spring 3 is disposed between opposite connecting posts 6. Heat dissipation grooves 9 are provided on both sides of the middle part of the contact piece 2.
[0013] Preferably, the bracket 1 includes an upper bracket 101 and a lower bracket 102 located at the lower end of the upper bracket 101. Both the upper bracket 101 and the lower bracket 102 have corresponding single grooves 4 and double grooves 5 on their sides. The upper end of the contact piece 2 has a first positioning groove 7 that engages with the upper single groove 4 and double groove 5. This improves the stability of the contact piece 2 after assembly.
[0014] Preferably, the back of the contact piece 2 is provided with a second positioning groove 8, and the connecting post 6 is disposed in the second positioning groove 8. This improves the stability of the assembly of the connecting post 6.
[0015] Preferably, the upper bracket 101 is provided with riveting posts 10 on both sides, and the lower bracket 102 is provided with riveting holes 11 on both sides that are riveted to the riveting posts 10.
[0016] The above description is not intended to limit the present invention in any way. Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed structure and technical content to create equivalent embodiments without departing from the scope of the present invention. However, any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.
Claims
1. A circuit breaker contact, comprising a bracket (1), a set of contact pieces (2) disposed on both sides of the bracket (1), and a tension spring (3) connecting the contact pieces (2), characterized in that: The bracket (1) has a single groove (4) at the outermost end of both sides that can only accommodate one of the contact pieces (2), and a double groove (5) in the middle that can accommodate two of the contact pieces (2). The contact pieces (2) are respectively located in the single groove (4) and the double groove (5). The contact pieces (2) are arranged in pairs, and each pair has a connecting post (6) on its outer side. The tension spring (3) is arranged between the opposite connecting posts (6). The contact pieces (2) have heat dissipation grooves (9) on both sides of the middle part.
2. The circuit breaker contact according to claim 1, characterized in that: The bracket (1) includes an upper bracket (101) and a lower bracket (102) located at the lower end of the upper bracket (101). The upper bracket (101) and the lower bracket (102) are provided with corresponding single groove (4) and double groove (5) on both sides. The upper end of the contact piece (2) is provided with a first positioning groove (7) that is positioned and engaged with the single groove (4) and double groove (5) above.
3. The circuit breaker contact according to claim 1, characterized in that: The back of the contact piece (2) is provided with a second positioning groove (8), and the connecting post (6) is located in the second positioning groove (8).
4. The circuit breaker contact according to claim 2, characterized in that: The upper bracket (101) is provided with riveting posts (10) on both sides, and the lower bracket (102) is provided with riveting holes (11) on both sides that are riveted to the riveting posts (10).