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1. 发明授权

US4823035A Electric motor with locking apparatus 失效
标题翻译：带锁定装置的电动机
公开(公告)号：US4823035A
公开(公告)日：1989-04-18
申请号：US162030
申请日：1988-02-29
申请人： David P. Kudla , Susan E. Holbrook
发明人： David P. Kudla , Susan E. Holbrook
IPC分类号： H02K7/102 , H02K23/68
CPC分类号： H02K7/102 , H02K23/68
摘要： An electric motor inlcudes a slotted collar on the rotor and a temperature sensitive actuator with an attached pin effective when cold to move into an inserted position in which the pin engages the slotted collar to prevent rotor rotation, and when hot to move to a retracted position in which the pin is withdrawn from the collar to allow rotor rotation. The actuator comprises first and second springs having ends connected together and exerting opposing forces on each other, the second spring being made of a temperature sensitive memory metal so as to shorten and lengthen the actuator with changing temperature. The acutator is electrically conducting and inserted in series with the motor commutator, whereby armature current heats the actuator to move to the retracted position, and cessation of armature current allows it to cool and move to its inserted position.
摘要翻译：电动机包括转子上的开槽轴环和具有附加销的温度敏感致动器，其在冷时移动到插入位置中有效，其中销接合开槽轴环以防止转子旋转，并且当热移动到缩回位置时其中销从轴环撤回以允许转子旋转。致动器包括第一和第二弹簧，其端部连接在一起并且相互施加相反的力，第二弹簧由温度敏感的存储金属制成，以便随着温度变化而缩短和延长致动器。该引导器是导电的并与电动机换向器串联插入，由此电枢电流加热致动器以移动到缩回位置，并且停止电枢电流允许其冷却并移动到其插入位置。

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