| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide pulleys capable of preventing generation of stick slip between a rib formed on an inner peripheral surface of an endless belt and a rib formed on an outer peripheral surface of an outer peripheral pulley part and capable of suppressing generation of abnormal sound accompanied with the stick slip, by enabling reduction in an approach angle of the endless belt to the pulley. Ž<P>SOLUTION: Each of the pulleys 43, 53, 54, 56 is composed of: a cylindrical inner peripheral pulley part 61 fixed to an outer peripheral part of each of a crank shaft 42 and input shafts 49, 50, 52; and the cylindrical outer peripheral pulley part 62 connected to an outer peripheral part of the inner peripheral pulley part 61 via a bearing 63, in which a plurality of ribs 66 formed in the circumferential direction of the outer peripheral surface are engaged with a plurality of ribs 68 formed in the circumferential direction of the inner peripheral surface of the endless belt 44. The bearing 63 supports the outer peripheral pulley part 62 to the inner peripheral pulley part 61 so that the part 62 can freely incline in the axial direction of each of the crank shaft 42 and the input shafts 49, 50, 52. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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