| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To effectively utilize all teeth, in a gear for meshing with only a partial tooth. <P>SOLUTION: A second key groove 3a is formed by four in total with each 90 degrees with the axis as the center on the outer periphery of a damper shaft 3. A first key groove 1b is formed by one in a shaft insertion hole 1a of a worm wheel 1. When a tooth group 1A1 is abraded by meshing with a worm 2A, the work wheel 1 is rotated by 90 degrees, and is reinstalled on the damper shaft 3, and a tooth 1A meshing with the worm 2A is changed to a separate tooth group 1A2. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
