| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a light gear that can be easily disposed almost coaxially with a shaft. <P>SOLUTION: In the gear 1, the shaft 2 is fitted to the center of a rotary shaft. The gear 1 includes projections 12 formed in a surface 101 of the gear on a side, to which the shaft 2 is to be fitted; and weight reducing parts 13 which respectively reduce the weight of the gear. At that time, the plurality of projections 12 are desirably formed by machining a plate member at the same time to form teeth parts 11, and an end of the shaft 2 is desirably fitted inside the plurality of projections 12. <P>COPYRIGHT: (C)2013,JPO&INPIT |
