| 摘要 |
PROBLEM TO BE SOLVED: To relieve restriction of arrangement of clutch claws in a free hub. SOLUTION: This freewheel 43 has an inside member 50, an outside member 51, bearings 52a and 52b and a one-way clutch 53. In this case, the inside member is connected to the hub, and the outside member is arranged on the outer peripheral side of the inside member. Next, the bearings are arranged between the inside member and the outside member, and relatively rotatably installs the outside member to the inside member. The one-way clutch has ratchet teeth 60 arranged on an inner peripheral surface of the outside member, the first to (n)th (n is an integer of 3 or more) of (n) pieces of clutch claws 61 arranged at an interval in the peripheral direction on an outer peripheral surface of the inside member and at least one closed annular ring-shaped coil spring 62a for collectively energizing the first to (n)th clutch claws toward an engaging position and expandable in the peripheral direction by extending in the peripheral direction of the inside member, and the first to (n)th clutch claws are arranged so that a play angle becomes 5 degrees or less. COPYRIGHT: (C)2007,JPO&INPIT
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