| 摘要 |
SOLUTION: A speed reducer 1 includes a first transmission shaft 10, an eccentric wheel 11, a first roller assembly 12, a rotary wheel 13, a second roller assembly 14 and a second transmission shaft 15. The rotary wheel has a main body 130 and a wheel shaft hole 133. The main body has a salient 131 and a recess part 132. The salient protrudes out of an outer periphery of the main body and has outer teeth. The outer teeth are contacted with a plurality of first corresponding rollers 121. The recess part is formed in the surface of the main body like a recess shape and has inner teeth. The inner teeth are contacted with a plurality of second rollers 141 of a second roller assembly.EFFECT: It is possible to make a various kinds of gear reduction ratio due to the fact that it is designed to have four different operating states.SELECTED DRAWING: Figure 1 |
