发明名称 BRUSHLESS MOTOR AND ELECTRIC TOOL
摘要 PROBLEM TO BE SOLVED: To provide a brushless motor in which locking strength of a cylindrical magnet for the shaft can be enhanced when compared with a case of fixing only with an adhesive, and to provide an electric tool using it as a drive source.SOLUTION: A first holder 34 has a protrusion 34a rising to the axial rear end side of a shaft 31 at the abutting part (outer edge of the rear end) against a cylindrical magnet 32. The cylindrical magnet 32 has a recess 32a (notch) at the abutting part (tip) against the first holder 34. The protrusion 34a of the first holder 34 and the recess 32a of the cylindrical magnet 32 form an uneven fitting structure, which serves as a mechanical locking part for preventing rotation of the cylindrical magnet 32 for the shaft 31.
申请公布号 JP2013188025(A) 申请公布日期 2013.09.19
申请号 JP20120051803 申请日期 2012.03.08
申请人 HITACHI KOKI CO LTD 发明人 TADANO AKITAKA;SHIMADA TAKAHIKO
分类号 H02K1/27;B25F5/00;H02K1/28;H02K21/14 主分类号 H02K1/27
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