US 6,307,459 B1Granted

Power switch device

OwnerTsung-Mou Yuinventor

Life of this patent

Estimating the term…

Loading patent…

Abstract

A switch structure comprises a control element, which comprises an alloy piece and a swing contact device. The alloy piece includes an actuating piece with a convex part, which has a upper side normally pushing the lower surface of the end part in the swing contact device so that the actuating piece ejects outwards and escapes from the end part when the alloy piece is overheated because of the current flowing through therein overloaded. Therefore, the end part falls down due to no support force and the head part of the swing contact device deforms upwards and does not press on the elastic contact piece. The elastic contact piece is released from the pressing of the swing contact device to eject upwards. Two joints connected in an electric loop are tripped. The object of rapid response, cutting power source, and safety is therefore achieved.

Claims14

Dependent claims

A switch structure, comprising a switch body, a switch cover body, an elastic contact reed, a swing contact device, an alloy piece, an elastic contact piece, herein said switch body is installed with a convex pillar, and said switch cover body joints with said elastic contact reed and said swing contact device, and is installed with said alloy piece and said elastic contact piece, which are constructed and assembled in said switch body, wherein said swing contact device has a head part and an end part, said head part comprising a slot hole to joint with said convex pillar in the switch body to swing, said swing contact device further having a through hole to connect to said switch cover body by a supporting rod;

said alloy piece is installed with an integrally formed actuating part having a convex part, said actuating part and said alloy piece forming an appropriate angle;
said alloy piece being overheated and bent towards said swing contact device under overload current, wile said actuating part ejects in opposite direction so that the end part falls down without supporting of the convex part of the actuating part, the head part moves upwards and the end part downwards, the elastic contact reed is not pressed by the swing contact device and smoothly ejects upwards, and meanwhile, two contact terminals which construct an electric loop become separated to cut off a power source.

Dependencies are inferred from the claim text.