Fuse mounting component

Abstract

PROBLEM TO BE SOLVED: To provide a fuse attachment component, preventing fatigue breakage of an internal element of a fuse caused by different thermal expansion coefficients between the fuse and the attachment component therefor.SOLUTION: Support portions 10T1 and 10T2 of a fuse attachment component 10 are respectively constituted by two stoppage arms T1 and T2. At each vertex of the stoppage arms T1 and T2, nut fixation portions 10N1 and 10N2 are provided. A space G is formed between the nut fixation portions 10N1 and 10N2 and the fuse attachment component 10. When both terminals 20T1 and 20T2 of a fuse 20 are fixed to nut fixation portions 10N1 and 10N2 by a nut N, the nut fixation portions 10N1 and 10N2 are displaced because of the existence of the formed space G, even if a load is to be imposed to the internal element of the fuse due to different thermal expansion coefficients between the fuse and the attachment component therefor. Thus, both terminals 20T1 and 20T2 of the fuse 20 are also displaced, so that no large stress is imposed to the internal element.

Description

technical field [0001] The present invention relates to a fuse for protecting electronic equipment from damage caused by short-circuit current or overcurrent from a storage battery used in an electric vehicle, and particularly relates to a fuse mounting part so that a fuse for mounting a fuse is mounted Parts are not easily damaged. Background technique [0002] <Fuse mounting part described in Patent Document 1> [0003] A fuse mounting part in which both terminals of a fuse are mounted to a nut provided on a resin molded part with set screws is known. (For example, refer to Patent Document 1). Figure 4 It is a figure explaining the conventional fuse mounting part of the invention described in patent document 1, (1) is a plan view; (2) is a vertical cross-sectional view. [0004] Figure 4 In this example, a nut N is fixed to a fuse mounting member 100 which is a resin molded part. Both terminals 20T of the fuse 20 are respectively fixed to the nut N by fixing scr...

AI Technical Summary

Problems solved by technology

[0008] In the fuse mounting part described in Patent Document 1, due to the difference in thermal expansion coefficient of each material of the fuse and the fuse mounting part, deformation caused by repeated expansion and contraction causes fatigue fracture to occur in the internal components of the fuse

[0009] If you want to avoid this situation, you should choose the fuse and fuse mounting parts with close thermal expansion rate when selecting materials, but this leads to the result of limited design freedom

However, since it is not easy to select components with exactly the same thermal expansion rate, there is still a problem that the deformation caused by the different thermal expansion rate of the material leads to fatigue fracture of the internal components of the fuse.

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