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Patent Searching and Data


Title:
COMPOUND SPRING AND MAIN CIRCUIT BREAKER USING THIS SPRING
Document Type and Number:
Japanese Patent JPS6192330
Kind Code:
A
Abstract:
PURPOSE:To attempt reduction of a contact resistance by building up a contact spring consisting of a spring made of an elastic material and a spring made of shape storing alloy, while the latter is piled on the former, so that the contact force of the contact spring may be increased progressively. CONSTITUTION:Main leaf springs 4a, 4a' are made of spring steel or the like, formed in an approximate arc and auxiliary leaf springs 46, 46' are made of shape storing alloy. The configuration of the auxiliary leaf springs 4b, 4b' is so stored as bending in their mother phases at a high temperature so that they may approach the main leaf springs 4a, 4a' respectively. Therefore, they come in contact with the main leaf springs 4a, 4a' successively from their central portions so that their contact force with both contacts 3a, 3a' on the fixed side and contacts 3b, 3b' on the mobile side may be gradually increased, that is, so-called action of compound springs 4, 4' of progressive characteristic. The contact resistance can be reduced in this way.

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Inventors:
TSURU YUSUKE
Application Number:
JP21467784A
Publication Date:
May 10, 1986
Filing Date:
October 12, 1984
Export Citation:
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Assignee:
YASKAWA DENKI SEISAKUSHO KK
International Classes:
F16F3/02; F16F1/32; H01H1/42; H01H1/50; H01H37/32; (IPC1-7): F16F3/02