发明名称 |
Stepper motor with integrated assembly |
摘要 |
A stepper motor of the permanent-magnet sheet-metal type is constructed of a number of modules, simplifying assembly. The modular parts include a stator having integrally-molded winding bobbins and pole pieces. A rotor mounted in the stator includes a barrier member which separates a plastic, threaded hub molded interiorly from a permanent magnet molded exteriorly. A shaft having a first threaded end rotatably engaged with the interior of the rotor hub has a rectangular central portion extending through a rectangular opening of the stator to convert rotary motion of the rotor to linear motion of the shaft. An opposite end of the shaft includes a molded head and a tubular shield extending from the head. This shield and a tubular portion of the stator molding define a labyrinthal passage which inhibits the passage of contaminants into the rotor. A housing of the motor and a rotatably attached flange include engagable portions to lock the flange at a desired angular position.
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申请公布号 |
US5313125(A) |
申请公布日期 |
1994.05.17 |
申请号 |
US19920943362 |
申请日期 |
1992.09.10 |
申请人 |
NORTH AMERICAN PHILIPS CORPORATION |
发明人 |
BOSMAN, EDWARD T.;PRATT, KARLA C.;ATIYEH, PHILIP G.;RUTLEDGE, JOHN F. |
分类号 |
H02K1/18;H02K3/52;H02K5/00;H02K5/22;H02K7/06;H02K37/14;(IPC1-7):H02K37/12 |
主分类号 |
H02K1/18 |
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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