发明名称 Stator assembly for a timepiece stepping motor
摘要 Briefly stated, the invention comprises an improved stepping motor and method of making it including locating it in the timepiece frame, the stepping motor including a rotor and a stator. A flat magnetizable stator member defines a central opening with diametrically opposed narrow sections on either side of the opening, a non-magnetic bushing disposed in the opening and secured to the surface of the stator member. The bushing has diametrically opposed cut-out portions aligned with the narrow sections. The narrow sections are severed to separate the stator into two pole shoes which are retained in position by the bushing. The severing is preferably by laser, but may includes sawing or other severing methods. The pole shoes of the stator member are then attached to the timepiece frame plate. The stepping motor rotor is journalled in bores formed in the frame and bushing.
申请公布号 US5059840(A) 申请公布日期 1991.10.22
申请号 US19910645759 申请日期 1991.01.25
申请人 TIMEX CORPORATION 发明人 PLANCON, MICHEL
分类号 G04C3/14;G04C3/00;G04C13/11;H02K37/16 主分类号 G04C3/14
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