Fuse with secondary short-circuit prevention mechanism

Details Fuse with secondary short-circuit prevention mechanism Fuse with secondary short-circuit prevention mechanism

1997-10-17

1998-10-06

Picard, Leo P.

Electricity: electrothermally or thermally actuated switches

Electrothermally actuated switches

Fusible element actuated

337261, 337263, H01H 8504, H01H 85045

Patent

active

058183213

ABSTRACT:
There is disclosed a fuse with a secondary short-circuit prevention mechanism in which a melting portion, when melted, will not be brought into an unstably supported-condition, thereby positively preventing the melting portion from being again short-circuited. A fuse element 23 includes a pair of parallel terminal portions 29 and 29 interconnected by a connecting portion 31, and a fusible portion 33 is formed at the connecting portion 31. A housing 25 includes terminal receiving chambers for respectively receiving the terminal portions 29 and 29, and a fuse element receiving space for receiving the connecting portion 31, the terminal receiving chambers communicating with the fuse element receiving space. Fixing means 47 and 63 for fixing opposite ends of the connecting portion 31 to an inner surface of the fuse element receiving space 53 are provided at the opposite ends of the connecting portion 31 and the inner surface of the fuse element receiving space, and the fusible portion 33 is provided between the opposite ends of the connecting portion 31.

REFERENCES:
patent: 4871990 (1989-10-01), Ikeda et al.
patent: 4943248 (1990-07-01), Colleran et al.
patent: 5416461 (1995-05-01), Totsuka et al.

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