| 摘要 |
<p>PROBLEM TO BE SOLVED: To suppress an axial length and eliminate rattling of a transmission gear against a crank shaft.SOLUTION: An eccentric oscillation type gear device 1 includes: a crank shaft 20 having an eccentric part 20a; an oscillation gear 24 interlocked with the eccentric part 20a; an outer cylindrical portion 2 having an internal tooth pin 3 engaged with a tooth part of the oscillation gear 24; a carrier 4 rotatably supporting the crank shaft 20; a main bearing 6 permitting relative rotation between the outer cylindrical portion 2 and the carrier 4; and a transmission gear 18 having an inner hole 18a. The crank shaft 20 is press-fitted into the inner hole 18a of the transmission gear 18 so that displacement of the transmission gear 18 relative to the crank shaft 20 is restricted.</p> |
