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Title:
CIRCUIT BREAKER
Document Type and Number:
WIPO Patent Application WO/2012/086454
Kind Code:
A1
Abstract:
Provided is a circuit breaker that can form a trip display with a simple structure and prevent erroneous display. This circuit breaker is provided with: a device body (10) in which a window hole (11o) is formed; a contact point mechanism (13); a handle (140) that rotates between a closed contact position and an open contact position; a link mechanism (14); a magnetic release means (150) and a thermomotive release means (151) that forcibly open the contact point mechanism (13); a handle spring (147) that impels the handle (140) toward the open contact position; a display member (16) that is supported freely rotatably by the device body (10) and has display parts (16A - 16C); and a latch spring (145) one end of which presses against the display member (16) and impels the display member (16) toward the trip position side where a trip display part (16A) faces the window hole (11o). A latching protrusion (16c) that mates with a latching piece (147e) of the handle spring (147) and regulates the rotation toward the trip position side is formed for the display part (16).

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Inventors:
MIZUNO, Hatsuo (1123, Sangocho-tsunoda, Owariasahi-sh, Aichi 20, 〒4888520, JP)
水野 初男 (〒20 愛知県尾張旭市三郷町角田1123番地 パナソニック電工電路株式会社内 Aichi, 〒4888520, JP)
ISHIGURO, Hirofumi (1123, Sangocho-tsunoda, Owariasahi-sh, Aichi 20, 〒4888520, JP)
Application Number:
JP2011/078750
Publication Date:
June 28, 2012
Filing Date:
December 13, 2011
Export Citation:
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Assignee:
PANASONIC ELECTRIC WORKS DENRO CO., LTD. (1123, Sangocho-tsunoda Owariasahi-sh, Aichi 20, 〒4888520, JP)
パナソニック電工電路株式会社 (〒20 愛知県尾張旭市三郷町角田1123番地 Aichi, 〒4888520, JP)
MIZUNO, Hatsuo (1123, Sangocho-tsunoda, Owariasahi-sh, Aichi 20, 〒4888520, JP)
水野 初男 (〒20 愛知県尾張旭市三郷町角田1123番地 パナソニック電工電路株式会社内 Aichi, 〒4888520, JP)
International Classes:
H01H73/12; H01H71/04
Domestic Patent References:
WO2009110347A1
Foreign References:
JP2002184294A
Attorney, Agent or Firm:
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)
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Claims: