| 摘要 |
PURPOSE:To permit the free speed change in a wide range by allowing the input of an input shaft to transmit revolution onto an internal gear from an external gear, while transmitting the revolution to bevel gears from other bevel gears, thus removing the constant torque part. CONSTITUTION:Bevel gears 10 and 17 and an external gear 2 are installed integrally onto an input shaft 1. An internal gear 3 in eccentricity for the external gear 2 is revolved by an eccentric shaft 4 together with a sun gear 5, and a planetary gear 6 is supported by a revolution shaft 9 and meshed with an output internal gear 7. While, the secondary input bevel gear 17 revolves the bevel gears 16 and 19 installed onto a revolution shaft 15, and further a bevel gear 10 revolves a countershaft gear 11 and a frictional wheel 12 which moves in sliding on the input shaft 1. A frictional plate 13 can be press-attached with the frictional wheel 12, and speed change is carried out by the rotation and revolution of the planetary gears 16 and 18 on a Z-axis.
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