DIRECT CURRENT CIRCUIT BREAKER

WIPO Patent Application WO/2011/001956

A1

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.

CYUZAWA, Takaaki (1048, Oaza-Kadoma, Kadoma-sh, Osaka 86, 〒5718686, JP)

JP2010/061011

January 06, 2011

June 29, 2010

Click for automatic bibliography generation  

PANASONIC ELECTRIC WORKS CO., LTD. (1048, Oaza-Kadoma Kadoma-sh, Osaka 86, 〒5718686, JP)
パナソニック電工株式会社 (〒86 大阪府門真市大字門真１０４８番地 Osaka, 〒5718686, JP)

H01H73/18; H01H1/66

NISHIKAWA, Yoshikiyo et al. (Hokuto Patent Attorneys Office, Umeda Square Bldg. 9F 12-17, Umeda 1-chome, Kita-ku, Osaka-sh, Osaka 01, 〒5300001, JP)

View/Download PDF      PDF Help

Previous Patent: COATED PRINTING PAPER

Next Patent: AIR CONDITIONER