DIRECT CURRENT CIRCUIT BREAKER - PANASONIC ELEC WORKS CO LTD

Title:

DIRECT CURRENT CIRCUIT BREAKER

Document Type and Number:

WIPO Patent Application WO/2011/001956

Kind Code:

A1

Abstract:

Provided is a direct current circuit breaker which comprises a fixed terminal (42), a movable contact (44), a shaft (46), a sealing container (40), a contact pressure spring (410), a return spring (411), an operation handle (1), a shaft pressing piece (56), and an electromagnetic removing block (6). To the fixed terminal (42), a fixed contact point (42a) is provided. To the movable contact (44), a movable contact point (45) is provided. The shaft (46) is inserted through the movable contact. The sealing container (40) holds the fixed terminal and stores the movable contact and the shaft in a hermetically sealed state. The contact pressure spring (410) gives a contact pressure between the movable contact point and the fixed contact point. The return spring (411) biases the shaft in a direction away from the fixed contact point. The shaft pressing piece (56) presses one end of a main body of the shaft based on an operation with the operation handle, thereby causing the shaft to approach the fixed contact point. The electromagnetic removing block (6) removes a pressing means from the end of the main body of the shaft in the case where an abnormal current flows through the movable contact point and the fixed contact point that are closed, thereby opening the movable contact point and the fixed contact point.

Inventors:

CYUZAWA TAKAAKI (JP)

Application Number:

PCT/JP2010/061011

Publication Date:

January 06, 2011

Filing Date:

June 29, 2010

Export Citation:

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Assignee:

PANASONIC ELEC WORKS CO LTD (JP)
CYUZAWA TAKAAKI (JP)

International Classes:

H01H73/18; H01H1/66

Foreign References:

JPS56130050A	1981-10-12
JPH10188711A	1998-07-21
JPS58108627A	1983-06-28
JPH11297181A	1999-10-29
JP2001023500A	2001-01-26

Other References: