| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a gear device easy to fix a main gear to a rotary shaft. <P>SOLUTION: The gear device 100 includes: the main gear 10 to be fitted to the rotary shaft 1; a sub gear 20 to be concentrically fitted to the main gear 10, being overlapped with the main gear 10; and bolts 40 for fastening the main gear 10 and the sub gear 20 to each other in the axial direction. A phase difference between the main gear 10 and the sub gear 20 is adjustable. The gear device 100 also includes a tapering mechanism 30 provided between the outer periphery of the rotary shaft 1 and the inner periphery of the main gear 10 and pinched between the main gear 10 and the sub gear 20 in the axial direction. The tapering mechanism 30 includes: an outer ring 31, whose outer peripheral surface 31b abuts on the inner periphery of the main gear 10 and whose inner peripheral surface 31a is formed to be tapered; and an inner ring 32 whose outer peripheral surface 32b is formed to be tapered and abuts on the inner peripheral surface 31a of the outer ring 31 and whose inner peripheral surface 32a abuts on the outer periphery of the rotary shaft 1. <P>COPYRIGHT: (C)2013,JPO&INPIT |
