| 摘要 |
PURPOSE:To provide high transmission efficiency even in the output of extremely slow rotation by a drive friction wheel eccentrically adjustable to an input shaft and a driven friction wheel rotating together with a driven rotor in direct pressure contact with each other. CONSTITUTION:When an input shaft 15 is rotated, an internal gear 21 and a planet carrier 22 are also rotated in the same direction to rotate and accelerate a drive friction wheel 39 through an intermediate transmission external gear 45, internal gear 44 and external gear 40 and rotate also a driven friction wheel 52. Also, a driven rotor 48 and an internal gear 55 connected to said driven friction wheel 52 through a slide key 53 are rotated to revolve respective planet gears 57 while rotating them about their own axes. When the eccentricity of an outside eccentric cam 28 to the input shaft 15 is zero, the rotation of output shaft 8 becomes zero and the output rotation is increased as said cam 28 becomes eccentric. Thus, high transmission efficiency can be attained even in the output of extremely slow rotation.
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