MOTOR PROTECTOR WITH PTC

WIPO Patent Application WO/2006/072995

A1

The temperature state of a bimetal matches with that of a motor even when the difference between the operating temperature and the reset temperature is small to maintain the lifetime of the bimetal. A motor protector (100) comprises a bimetal disc (220) provided on the current path for supplying a current to the rotor of a motor and performing an inverting action depending on its own temperature, a fixed contact (254) provided on the current path, a movable contact (230) provided on the bimetal disc (220), coming in contact with the fixed contact (254) when the bimetal disc (220) is in a noninverted state, and separating from the fixed contact (254) when the bimetal disc (220) is in an inverted state, and a PTC thermister (240) provided on the current path in parallel with the fixed contact (254), coming in contact with the bimetal disc (220) when the bimetal disc (220) is in a noninverted state, and separating therefrom when the bimetal disc (220) is in an inverted state.

Sato, Yasuhiro (301 Furea Nishiazabu, 3-3-19 Nishiazabu, Minato-k, Tokyo 31, 10600, JP)

PCT/JP2005/000137

July 13, 2006

January 07, 2005

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TAKANO PRECISION INDUSTRY CO., LTD. (1032, Uwano Fukujima, Yatsuo-machi, Nei-gu, Toyama 76, 93923, JP)
Tanaka, Kenji (1461-6, Midorigaoka Ikoma-sh, Nara 62, 63002, JP)
Three, Sss (309 Hitotsugi-kan, Dearcity Akasaka 4-2-3, Akasaka, Minato-k, Tokyo 52, 10700, JP)
Sato, Yasuhiro (301 Furea Nishiazabu, 3-3-19 Nishiazabu, Minato-k, Tokyo 31, 10600, JP)

H01H37/54; (IPC1-7): H01H37/54

Higuchi, Masaki (301 Wizard, 1-4-3 Sengencho, Nishi-k, Yokohama-shi Kanagawa 72, 22000, JP)

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