To provide a rotation transmission mechanism capable of achieving a bicycle, etc., that has a better usability than conventional technologies.SOLUTION: According to a rotation transmission mechanism 1, an internal rotation member 3 includes: an internal rotation member main body 3a in a disk shape that has a crank-shaft insertion hole 3e; and an elongated body 3f which is elastically deformable, has a basal end connected to the outer circumference surface of the internal rotation member main body 3a and has a tip protruding toward the outer circumference of the internal rotation member main body 3a, while an external rotation member 4 includes: an annular part 4b which is provided on the internal rotation member 3 at the outer-circumference side relative to the elongated body 3f of the internal rotation member 3 so as to be freely rotatable. A recess 4d which is cut in the internal surface in the outer circumferential direction and at which the tip of the elongated body 3f is placed is formed in the annular part 4b. The elongated body 3f has the basal end rotated together with the rotation of the internal rotation member 3 when the internal rotation member 3 and the external rotation member 4 rotate relative to each other, and has the tip abutted with the recess 4d of the annular part 4b and elastically deformed.SELECTED DRAWING: Figure 6
【課題】従来よりも使用性に優れた自転車等を実現することが可能な回転伝達機構を提供する。【解決手段】回転伝達機構1は、内部回転部材3が、クランク軸挿通孔3eを有する円盤状の内部回転部材本体3aと、内部回転部材本体3aの外周面に基端が接続され、先端が内部回転部材本体3aの外周側に突出する弾性変形可能な長尺体3fと、を備え、外部回転部材4が、内部回転部材3の長尺体3fより外周側で内部回転部材3に回動自在に配設された円環部4bを備え、円環部4bには、内周面に外周方向に欠き込まれ、長尺体3fの先端が配置される凹部4dが形成され、長尺体3fは、内部回転部材3と外部回転部材4が相対的に回転する際に、基端が内部回転部材3の回転に伴い回転し、先端が円環部4bの凹部4dに当接し、弾性変形する。【選択図】図6
ROTATION TRANSMISSION MECHANISM AND BICYCLE PROVIDED WITH SAME
回転伝達機構及びそれを備えた自転車
2019-08-29
Patent
Elektronische Ressource
Japanisch
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