Title:
CIRCUIT BREAKER
Document Type and Number:
WIPO Patent Application WO/2011/024529
Kind Code:
A1
Abstract:
A circuit breaker is provided wherein even if a material property (thermal conductivity) of the stud varies, the number of structural changes of a case and the like can be minimized. A stud (20) comprises a base (21), which is housed in a case (2), and a protrusion (22), which protrudes from the case (2), and the cross-sectional area of the protrusion (22) is greater than that of the base (21). Setting the cross-sectional area of the protrusion (22) of the stud (20) to be greater than that of the base (21) thereof can increase the thermal conductivity of the protrusion (22), thereby increasing the thermal conductivity from the protrusion (22) to an external conductor connected thereto. Additionally, since the surface area of the protrusion (22) is increased, the amount of thermal radiation from the protrusion (22) is also increased. In this case, the dimensions of the base (21) inserted into a stud insertion hole (2b) of the case (2) do not vary, and hence the dimensions of the insertion hole (2b) of the case (2) need not be changed. Therefore, the structural changes of the components due to the variation in the material property of the stud can be minimized.
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Inventors:
NAKANO, Masaaki (1, Fujimachi, Hino-sh, Tokyo 02, 〒1918502, JP)
中野 雅祥 (〒02 東京都日野市富士町１番地 富士電機アドバンストテクノロジー株式会社内 Tokyo, 〒1918502, JP)
TOYAMA, Kentaro (1, Fujimachi, Hino-sh, Tokyo 02, 〒1918502, JP)
中野 雅祥 (〒02 東京都日野市富士町１番地 富士電機アドバンストテクノロジー株式会社内 Tokyo, 〒1918502, JP)
TOYAMA, Kentaro (1, Fujimachi, Hino-sh, Tokyo 02, 〒1918502, JP)
Application Number:
JP2010/059256
Publication Date:
March 03, 2011
Filing Date:
June 01, 2010
Export Citation:
Assignee:
Fuji Electric FA Components & Systems Co., Ltd. (5-7 Nihonbashi, Odemma-cho Chuo-k, Tokyo 11, 〒1030011, JP)
富士電機機器制御株式会社 (〒11 東京都中央区日本橋大伝馬町５番７号 Tokyo, 〒1030011, JP)
NAKANO, Masaaki (1, Fujimachi, Hino-sh, Tokyo 02, 〒1918502, JP)
中野 雅祥 (〒02 東京都日野市富士町１番地 富士電機アドバンストテクノロジー株式会社内 Tokyo, 〒1918502, JP)
富士電機機器制御株式会社 (〒11 東京都中央区日本橋大伝馬町５番７号 Tokyo, 〒1030011, JP)
NAKANO, Masaaki (1, Fujimachi, Hino-sh, Tokyo 02, 〒1918502, JP)
中野 雅祥 (〒02 東京都日野市富士町１番地 富士電機アドバンストテクノロジー株式会社内 Tokyo, 〒1918502, JP)
International Classes:
H01H73/02; H01H71/08; H01H73/20
Attorney, Agent or Firm:
WATANABE, Atsushi et al. (Patent Attorneys Shinpo, 1-20-10-203 Takadanobab, Shinjuku-ku Tokyo 75, 〒1690075, JP)
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