一种散热片式桥型触头结构及断路器

What is AI technical title?
AI technical title is built by Patsnap AI team. It summarizes the technical point description of the patent document.
By using a heat sink-type bridge contact structure with conductive and heat dissipation parts made of copper or aluminum, combined with a spring structure, the problem of heat generation during the conduction process of the bridge contact structure is solved, achieving efficient heat dissipation and improved stability, and extending the service life of the circuit breaker.

CN224519852UActive Publication Date: 2026-07-17GUIZHOU TAIYONG CHANGZHENG TECH CO LTD

Patent Information

Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner: GUIZHOU TAIYONG CHANGZHENG TECH CO LTD
Filing Date: 2025-05-14
Publication Date: 2026-07-17

AI Technical Summary

Technical Problem

The existing bridge-type contact structure has high contact resistance during conduction, which leads to severe heat generation and low heat dissipation efficiency, affecting the stability and lifespan of the circuit breaker.

Method used

It adopts a heat sink bridge-type contact structure, which increases the heat dissipation through contact with air. It uses conductive and heat dissipation parts made of copper or aluminum, combined with a spring structure, to achieve efficient heat dissipation and stable clamping.

Benefits of technology

It improves the stability and safety of circuit breakers, extends equipment lifespan, reduces the risk of temperature rise, reduces contact oxidation, and enhances operational safety.

✦ Generated by Eureka AI based on patent content.

Smart Images

Figure CN224519852U_ABST

Patent Text Reader

Abstract

本实用新型公开了一种散热片式桥型触头结构及断路器，桥型触头结构包括两个中部互相对接在一起的支架，在两支架对接处的两侧分别具有一个夹持槽；在每个支架面向另一支架的一侧设有导向槽；在每个支架背向另一支架的一侧分别设有若干与各个导向槽两端一对一连通的散热孔；在每个导向槽内分别滑动设置有一块接触片，接触片两端面向夹持槽一侧分别凸出支架外，接触片两端背向夹持槽一侧分别伸出支架外；在支架中部与其内接触片之间设有弹簧。断路器包括上述桥型触头结构。本实用新型通过增大与空气接触的散热形式，提高断路器的稳定性和安全性，该结构兼具高导电性和高效散热能力，适用于高负载断路器，可延长设备使用寿命并提升运行安全性。

Need to check novelty before this filing date? Find Prior Art

Claims

1. A heat sink type bridge contact structure, comprising two brackets (1) joined together at their midpoints, each bracket (1) having a clamping groove (6) for placing a busbar on both sides of the joint; characterized in that: Each bracket (1) is recessed on the side facing another bracket (1) and divided into several guide grooves (7) by several partitions. The two ends of each guide groove (7) are respectively aligned with the clamping grooves (6) on both sides of the bracket (1). On the side of each bracket (1) facing away from the other bracket (1), there are several heat dissipation holes (8) that are connected one-to-one with the two ends of each guide groove (7). A contact piece (2) for clamping the busbar is slidably disposed in each guide groove (7). The two ends of the contact piece (2) protrude out of the bracket (1) on the side facing the clamping groove (6) to form a clamping part. The two ends of the contact piece (2) extend out of the bracket from the heat dissipation holes (8) at both ends of the guide groove (7) on the side facing away from the clamping groove (6). A spring (3) is provided between the middle of the bracket (1) and the middle of its inner contact piece (2).

2. A finned bridge contact structure according to claim 1, characterized in that: The contact piece (2) includes a conductive part (21) and a heat dissipation part (22); the conductive part (21) is slidably installed in the guide groove (7), and the two ends of the conductive part (21) protrude out of the bracket (1) respectively on the side facing the clamping groove (6); the heat dissipation part (22) is fixed on the side of the conductive part (21) facing away from the clamping groove (6), and the heat dissipation part (22) is located outside the bracket (1) and can slide into or out of the bracket (1) through the heat dissipation hole (8).

3. A finned bridge contact structure according to claim 2, characterized in that: Both the conductive part (21) and the heat dissipation part (22) are made of copper.

4. The finned bridge contact structure of claim 2, wherein: The conductive part (21) is made of copper, and the heat dissipation part (22) is made of aluminum.

5. The finned bridge contact structure of claim 2, wherein: Both the conductive part (21) and the heat dissipation part (22) are made of aluminum.

6. The finned bridge contact structure of claim 1, wherein: A spring (3) is provided between the middle of the bracket (1) and the middle of each contact piece (2) inside it.

7. The finned bridge contact structure of claim 1 wherein: The two brackets (1) are connected at their midpoints by any one of the following methods: screwing, snap-fitting, welding, and riveting.

8. The heat sink bridge contact structure according to claim 1, characterized in that: The middle part of the contact piece (2) is recessed towards the spring (3), and the middle part of the bracket (1) is provided with a mounting groove for installing the spring (3). The mounting groove is connected to the guide groove (7) and is perpendicular to the guide groove (7). One end of the spring (3) is set in the mounting groove, and the other end is in contact with the recessed part of the middle part of the contact piece (2).

9. The finned bridge contact structure of claim 1 wherein: Each partition plate protrudes from the bracket (1) on both sides of the spring (3) to form a limiting plate (9). The two limiting plates (9) are located in the clamping grooves (6) on both sides of the bracket (1) and are set close to the middle of the bracket (1). There is a gap (10) between the limiting plates (9) of the two brackets (1) located in the same clamping groove (6).

10. A circuit breaker characterized by: Includes the heat sink bridge contact structure as described in any one of claims 1-9.