发明名称 |
Brushless motor for power tool |
摘要 |
It is an object of the present teachings to provide a technique that rationalizes the structure of the brushless motor so as to save space in the power tool. According to the present teachings, a representative brushless motor utilized in a power tool may comprise a stator, a rotor and a cooling fan. The brushless motor is disposed within the power tool. The brushless motor is adapted to supply driving current to the stator to drive a tool bit of the power tool by rotating the rotor. The cooling fan is molded of a magnetic or conductive material so that the cooling fan also serves as a rotating position detector that detects the rotating position of the rotor with respect to the stator. Because the cooling fan may also have a function of rotating position detector of the rotor, the inner space of the power tool can be rationalized.
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申请公布号 |
US2004017119(A1) |
申请公布日期 |
2004.01.29 |
申请号 |
US20030449331 |
申请日期 |
2003.05.29 |
申请人 |
MAKITA CORPORATION;KOFU MEIDENSYA ELECTRIC MFG. CO., INC.;MAKITA CORPORATION |
发明人 |
YAMAMOTO HIROKATSU;OTOGAO SIMORU |
分类号 |
B25F5/00;H02K7/14;H02K9/06;H02K11/00;H02K29/08;(IPC1-7):H02K11/00;H02K9/00 |
主分类号 |
B25F5/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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