| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a return spring holding structure having simplified manufacturing processes while forming a stator thinner than a stator on which a pin is mounted for holding a return spring. <P>SOLUTION: Grooves 37, 38 are formed at inner peripheries of first and second housings 16, 17, and the grooves 37, 38 store a plurality of protruded portions 34a-36a formed on outer peripheral faces of first and second stators 34, 36 and an intermediate stator 35. A first return spring 39 is mounted between the first stator 34 and the intermediate stator 35. A second return spring 42 is mounted between the intermediate stator 35 and the second stator 36. In the first and second return springs 39, 42, annular first and second collars 40, 43 are provided for encircling outer peripheries of the first and second rotors 31, 33 while holding the first and second return springs 39, 42 in a state of abutting on the stators 34-36. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
