Fusing and fuse provided with degradation detection mechanism |
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| 申请号 | JP8515691 | 申请日 | 1991-04-17 | 公开(公告)号 | JPH04319223A | 公开(公告)日 | 1992-11-10 |
| 申请人 | Mitsubishi Electric Corp; | 发明人 | BABA YOSHIAKI; | ||||
| 摘要 | PURPOSE: To detect both fusing and degradation of a fuse device through a fuse single body. CONSTITUTION: A detection device 2 provided in parallel to a fuse device 1 is composed of a melting part 2a which is fused by breaking current and of a shape memory alloy part 2b which is stretched by the heat generated due to degradation of the fuse device 1. A display device 3 held in a box body 6 is provided on one end of the device 2 through a compressed spring 4. When a front end part 3a of the display device 3 is completely protruded from the box body 6 due to the fusing of the melting part 2a, the fusing of the fuse device 1 is detected, while the degradation of the fuse device 1 is detected when a part of the front end part 3a of the display device 3 is protruded from the box body 6 due to deformation of the shape memory alloy part 2b. COPYRIGHT: (C)1992,JPO&Japio |
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