PROBLEM TO BE SOLVED: To provide a gear which contributes to the size reduction of a component for a bicycle, and a gear change mechanism for the bicycle having the same.SOLUTION: A gear change mechanism for a bicycle comprises a first gear which includes a plurality of first teeth which are different in a magnitude of a first pressure angle regulated by a first tooth face and a magnitude of a second pressure angle regulated by a second tooth face, and a second gear which includes a plurality of second teeth which are different in a magnitude of a third pressure angle regulated by a third tooth face and a magnitude of a fourth pressure angle regulated by a fourth tooth face, and is geared with the first gear.SELECTED DRAWING: Figure 3
【課題】自転車用コンポーネントの小型化に寄与する歯車およびこれを備える自転車用変速機構を提供する。【解決手段】自転車用変速機構は、第1の歯面によって規定される第1の圧力角の大きさと第2の歯面によって規定される第2の圧力角の大きさとが異なる第1の歯を複数含む第1の歯車と、第3の歯面によって規定される第3の圧力角の大きさと第4の歯面によって規定される第4の圧力角の大きさとが異なる第2の歯を複数含み、前記第1の歯車と噛み合う第2の歯車とを備える。【選択図】図3
GEAR AND GEAR CHANGE MECHANISM FOR BICYCLE HAVING THE SAME
歯車およびこれを備える自転車用変速機構
2017-07-06
Patent
Electronic Resource
Japanese
BICYCLE SPEED CHANGE GEAR AND BICYCLE ASSIST SYSTEM WITH THE SAME
European Patent Office | 2018
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