Motor-driven control apparatus

专利名称：Motor-driven control apparatus发明人：Masayoshi Onishi,Hiromasa Ozawa申请号：US07/374894申请日：19890703公开号：US04955954A公开日：19900911

摘要：A motor-driven apparatus for controlling a throttle valve includes first andsecond clutch plates 11,13 mounted on an output shaft 5 opposite each other, with thesecond clutch plate rigidly secured to the output shaft. The first clutch plate is urged bya spring 12 toward an output gear 10 rotatably mounted on the output shaft. When thesecond clutch plate is magnetized, the first clutch plate is attracted to it for engagementcausing the second clutch plate to rotate with the first clutch plate and the output gear,thus transmitting the torque of a motor 18 to the output shaft. An axial gap between thesecond clutch plate and a yoke 15 ensures rotation of the second clutch plate even whenforeign substances such as iron particles are trapped in the gap because the foreignsubstances will easily be displaced out of the gap by centrifugal force during rotation.

申请人：MITSUBISHI DENKI KABUSHIKI KAISHA

代理机构：Sughrue, Mion, Zinn, Macpeak and Seas

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