| 摘要 |
PURPOSE:To reduce the volume of a rubber member, by a method wherein a rubber volume nipped by the inner and in relation to the outer surface of the rubber member and in the direction of rotation is set such that a volume on the compression side is larger than the volume on the non-compression side during transfer of a power. CONSTITUTION:A cylindrical rotary body 7 is secured to the driving shaft of a crank shaft 4, and an annular rotary body 9 is secured to a driven shaft being an input shaft 8 of a transmission gear. A plurality of recesses 7a are formed along a peripheral direction in the inner peripheral surface of the cylinder part of the rotary body 7, a rubber member 10 is engaged with the recess 7a, and an outer side is held. Plural claws 9a are projected on the outer periphery of the rotary body 9 so that they are respectively positioned opposite to the recesses 7 and the claw 9 is inserted into the rubber member 10. Parts 10a and 10b the rubber member 10 are formed such that the rubber volume of the former 10a is larger than that of the latter 10b. |
