| 摘要 |
PROBLEM TO BE SOLVED: To provide a reduction gear allowing carrier pins to be easily and firmly fixed.SOLUTION: A reduction gear comprises: a shaft member 31 supported rotatably around the axis; an internal tooth gear; an external tooth gear 8 that engages with the internal tooth gear and is formed with through holes 82 between the center and the outer peripheral edge along the circumferential direction; an eccentric body 4 eccentrically and oscillationally rotating the external tooth gear with the shaft member connected thereto and rotating; carrier pins 7 inserted in the through holes 82 of the external tooth gear; first carriers 5 and second carriers 6 that are fixed to both ends of the carrier pins and rotate around the axes. The carrier pin has a cylindrical body part 71, a large-diameter part 73 provided on one end side of the body part, and a male screw 72 provided on the other end side. The first and second carriers are formed with through holes 53, 63 in which both ends of the carrier pins are inserted. The male screws of the carrier pins are fixed to the first carriers, and the second carries receive the large diameter parts to prevent the carrier pins from passing through to the first carrier side.SELECTED DRAWING: Figure 3 |
