Speed changing device for a bicycle
AssigneeShimano Industrial Company Limited
InventorMasashi Nagano
Life of this patent
Estimating the term…
Abstract
A speed changing device for a bicycle comprises a lever unit and a winding unit. The lever unit has a control lever, a first winding body carrying a first control wire connected to a front or rear derailleur, and an engagement for selectively transmitting rotation of the control lever to the first winding body. The winding unit has a second winding body having an engaging portion engageable with the engaging means and carrying a second control wire connected to the other derailleur, and is detachably mounted to the lever unit by means of a coupling.
Claims8
A speed changing device for a bicycle comprising:
- a lever unit comprising a base member having a first pivot, one control lever rotatably supported to said first pivot, a first winding body positioned at a lateral side with respect to the axis of said lever and supported to said pivot in relation of being rotatable independently of said lever, said winding body including a wire support surface for carrying a first derailleur control wire;
- engaging means for selectively transmitting rotation of said lever to said winding body;
- and,
- coupling means for detachably mounting a winding unit containing a second winding body adjacent said lever unit such that said one control lever can engage with and operate said second winding body, said second winding body including a wire support surface for carrying a second derailleur control wire, said winding unit further including means for applying resistance against rotation of said second winding body.
A speed changing device for a bicycle, comprising one lever unit, one winding unit mounted selectively to said lever unit, and coupling means for mounting said winding unit detachably to said lever unit, said lever unit comprising:
- a base member having a first pivot, one control lever rotatably supported to said first pivot at said base member, a first winding body positioned at a lateral side with respect to the axis of said lever and supported to said pivot in relation of being rotatable independently of said lever, said first winding body including a wire support surface for carrying a first derailleur control wire, and engaging means for selectively transmitting rotation of said lever to said first winding body;
- said winding unit comprising:
- one second pivot extending in the same direction as said first pivot and having a first engaging element, one second winding body which is rotatably supported to said second pivot, and resistance means for imparting a resistance to the movement of said second winding body, said second winding body having an engaging portion engageable with said engaging means, a wire support surface for carrying a second derailleur control wire, and a second engaging element for engaging with the first engaging element of said second pivot to mount said second winding body on said second pivot.
Dependencies are inferred from the claim text.