发明授权
- 专利标题： DC motor with improved brushes and liquid pump using the same
- 专利标题（中）： 直流电机采用改进的电刷和液泵使用
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申请号： US665237申请日： 1996-06-17
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公开(公告)号： US5723932A公开(公告)日： 1998-03-03
- 发明人: Motoya Ito , Minoru Yasuda , Takeshi Matsuda
- 申请人： Motoya Ito , Minoru Yasuda , Takeshi Matsuda
- 申请人地址： JPX Kariya
- 专利权人： Nippondenso Co., Ltd.
- 当前专利权人： Nippondenso Co., Ltd.
- 当前专利权人地址： JPX Kariya
- 优先权： JPX7-148516 19950616; JPX8-119417 19960515
- 主分类号： H01R39/10
- IPC分类号： H01R39/10 ; F02M37/08 ; H01R39/18 ; H01R39/38 ; H02K5/132 ; H02K7/14 ; H02K13/00 ; H02K13/10 ; H02K23/00
摘要：
A liquid pump has a DC motor and a pump in a cylindrical casing. A pair of brushes are slidably contacted with a commutator of an armature while being biased by springs. The specific resistance of the positive brush is lower than the specific resistance of the negative brush to enable the voltage drop at the brushes to be decreased and motor efficiency to be increased without increasing commutator wearing speed. The biasing force provided by the spring biasing the positive brush is lower than the biasing force provided by the spring biasing the negative brush.
公开/授权文献
- US4590400A Piezoelectric cylinder pressure transmitter 公开/授权日：1986-05-20
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