To provide a bicycle wheel detachment prevention device that can prevent rotation loss of an axle and improve wheel attachment workability.SOLUTION: A wheel detachment prevention device 100 includes a body 101, an axle insertion opening 103, a first engagement portion 105, and a second engagement portion 107. Even when force acts on the wheel detachment prevention device 100 in a tightening direction of a nut NT, an upper surface P107u of the second engagement portion 107 and an inner circumferential upper surface PASu of an axle attachment groove DS are brought into contact with each other, and thus the axle insertion opening 103 of the wheel detachment prevention device 100 can be prevented from moving and interfering with an axle AC. In other words, a rear wheel can be prevented from being detached while smooth rotation from the axle AC is maintained to reduce rotation loss.SELECTED DRAWING: Figure 3
【課題】 車軸の回転ロスを防止し、車輪取付の作業性を改善することができる自転車脱輪防止装置の提供。【解決手段】 脱輪防止装置100は、本体部101、アクスル挿入開口103、第1係合部105、及び、第2係合部107を有している。脱輪防止装置100にナットNTの締め付け方向に力が作用したとしても、第2係合部107の上面P107uと、アクスル取付溝DSの内周上面PASuとが当接するため、脱輪防止装置100のアクスル挿入開口103が、アクスルACに干渉するほど移動することを防止できる。つまり、アクスルACの滑らかな回転を維持し、回転ロスを低減しながら、後輪の脱落を防止できる。【選択図】 図3
BICYCLE WHEEL DETACHMENT PREVENTION DEVICE
自転車脱輪防止装置
2020-01-16
Patent
Electronic Resource
Japanese
IPC: | B62K Fahrräder , CYCLES |
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