| 主权项 |
1. A bicycle freecoaster hub, comprising:
an axle; a hub shell rotatably sleeved onto the axle; a chain sprocket rotatably sleeved onto one end of the axle and having a screw part inserted into the hub shell via one end of the hub shell; and a clutch disposed inside the hub shell and including a clutch member, a first resistance member, a second resistance member and an elastic member, the clutch member provided with a threaded hole and a sleeving hole coaxially communicated with the threaded hole, and the axle passing through the threaded hole and the sleeving hole both, the threaded hole screwed to the screw part of the chain sprocket, openings of the threaded hole and the sleeving hole located at two ends of the clutch member, respectively; the first resistance member disposed inside the sleeving hole of the clutch member and provided with a cylinder and a ring flange, the cylinder mounted on the axle and provided with at least one outer flange at one end thereof, the ring flange located at the other end of the cylinder and having an outer diameter larger than that of the cylinder, such that a holding wall is defined at a junction portion between the ring flange and the cylinder; the second resistance member provided with a ring sleeve part and an inner flange, the ring sleeve part disposed on the clutch member and rotatably sleeved onto the cylinder of the first resistance member, an outer ring surface of the ring sleeve part located inside a periphery wall of the sleeving hole of the clutch member, an end surface of the ring sleeve part abutted against the holding wall of the first resistance member, the inner flange located on an inner ring surface of the ring sleeve part to form a stepped surface between the inner flange and the ring sleeve part; the elastic member sleeved onto the cylinder of the first resistance member and elastically abutted between the outer flange of the first resistance member and the stepped surface of the second resistance member. |
