The present invention provides a rotation transmission mechanism including an internal rotation member and an external rotation member rotatably arranged with respect to the internal rotation member. The internal rotation member has one or a plurality of outer-peripheral-projected portions protruding toward an outer-peripheral side. The external rotation member has one or a plurality of inner-peripheral-projected portions. The outer-peripheral-projected portions have a forward-movement surface located at a position displaced from a center of the outer-peripheral-projected portion in a forward movement direction in which the rotation transmission mechanism rotates by forward movement. An elastically-deformable portion is disposed between the forward-movement surface and the inner-peripheral-projected portion. A space is partially formed in the elastically-deformable portion. When the internal rotation member rotates relative to the external rotation member, the elastically-deformable portion is sandwiched between the outer-peripheral-projected portion and the inner-peripheral-projected portion and is thereby elastically deformed.
ROTATION TRANSMISSION MECHANISM, BICYCLE PROVIDED WITH ROTATION TRANSMISSION MECHANISM, AND ELASTICALLY-DEFORMABLE BODY USED IN ROTATION TRANSMISSION MECHANISM
2019-05-30
Patent
Elektronische Ressource
Englisch
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