| 摘要 |
The present invention discloses a thermal fuse having dual metal elastic clamps, comprising: an insulating cylindrical tube (101); a first metal cap (102A), wherein one end of the first metal cap is axially fixed on one end of a through hole; the other end of the first metal cap is connected with a first conducting wire extending outward; a second metal tube (102B), wherein one end of the second metal tube is axially fixed on the other end of the through hole; the other end of the second metal tube is connected with a second conducting wire extending outward. The first metal cap (102A), the second metal tube (102B) and the inner side wall of the middle part of the through hole form a temperature sensing chamber. The temperature sensing chamber axially arranges a plurality of components in the following sequence: a compressed spring; an insulating supporting pillar (402); a second metal elastic clamp (302); a connecting pillar (303); a first metal elastic clamp (301); an organic temperature sensing body (201) capable of melting when heating. The first metal elastic clamp, the second metal elastic clamp and the connecting pillar forms a movable conductive bridge. The movable conductive bridge slides flexibly in the temperature sensing chamber and has low contacting resistance with the first metal cap and the second metal tube. The above structure can withstand large current and has high realiability. |
