| 摘要 |
PURPOSE:To transmit high load in spite of a small ratio of contact by shifting the contact phases of two external gears with an internal gear by 180 deg.. CONSTITUTION:An internal gear 1 is disposed on a main body 10 through a bearig, a plurality of carrier pins 11a, 11b... are fixed thereto, and external gears 2a, 2b are mounted there through bearings. An eccentric shaft 13 having eccentric portions 12a, 12b are rotatably mounted. The eccentric shaft 13 is connected to a power source, and is concentric with the internal gear 1. The internal and external gears have involute tooth and low tooth, the ratio of contact of which is set at 0.5. The contact phases of two external gears 2a, 2b with the internal gear 1 are shifted from each other by 180 deg., so that the number of teeth of contact alternates with four and three during contact rotation. |
