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US 2002/0179394 A1Published application
Clutch of hub of bicycle
OwnerChin-Fu Wuinventor
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OwnerChin-Fu Wuinventor
Estimating the term…
It is an improvement of the clutch of the hub of the bicycle. The clutch is made up of the sleeve with attaching holes inside, the spiral connection part formed at the end of smaller diameter with the stair stepping tube, and the screw bar whose end of bigger diameter is the head part; the clutch crosses through the axle inside the hub and uses resisting component made up of the ball bearing that presses the spring to accommodate it in the connection hole of axle, or the leaf spring whose two ends are bent to be elastic clamp end in the distance existing between the axle and sleeve, to produce the clamp and directional function of point contact to the inner wall of sleeve; therefore, at the moment that the freewheel links the head part of screw bar to transmit the kinetic energy, it will not turn in the same direction with the screw bar and can respond to screw forward or backward instantly to decide whether it attaches to the inner wall of hub or not, thus to reduce the friction loss.
An improvement of the clutch of the hub of the bicycle, includes:
According to the improvement of the clutch of the hub of the bicycle mentioned in the first item of the patent application scope, the resisting component can have a hollow coil connected with the connection hole for the above ball bearing to press the spring so as to be assembled in the tube;
According to the improvement of the clutch of the hub of the bicycle mentioned in the second item of the patent application range, the edge of coil close to the end of the ball hole can form multilateral spiral lock ends for the convenience of the locking steps.
According to the improvement of the clutch of the hub of the bicycle mentioned in the first item of the patent application scope, the resisting component can be replaced by the leaf spring;
According to the improvement of clutch of hub of bicycle mentioned in the first item or the fourth item of the patent application range, the axle can add one or more collar in the forward or backward range in the axial direction of the sleeve, so as to shorten the stroke to accelerate the attaching time effect.
According to the improvement of the clutch of the hub of the bicycle mentioned in the first item or the fourth item of the patent application scope, that the axle adds one or more ball plates made of multiple clamp steel balls in the forward or backward scope of in the axial direction of the sleeve, can not only shorten the stroke to accelerate the attaching time effect, but also reduce the friction resistance.
According to the improvement of the clutch of the hub of the bicycle mentioned in the first item or the fourth item of the patent application scope, the head part of the screw bar can be molded integrally with the fluted disc to replace the existing freewheel.
Dependencies are inferred from the claim text.