PROBLEM TO BE SOLVED: To enable switching freely between the standard state where auxiliary wheels are grounded and the jump-up state where the auxiliary wheels are not grounded, and stably perform the vertical operation of the auxiliary wheels.SOLUTION: An auxiliary wheel device for bicycle includes: a pair of brackets 15 which is fixed to a frame 4 on both sides of a rear wheel 8; a pair of auxiliary wheel tools 16 which is pivoted in a tiltable manner to each bracket 15; and a connection bar 17 which connects the pair of auxiliary wheel tools 16 in the integrally-tiltable manner. The auxiliary wheel tool 16 includes: a tilting arm 25 whose inner end part 25a is pivoted to the bracket 15; a slide cylinder 26 which is externally inserted to the tilting arm 25 in a slidable manner; an auxiliary wheel 18 which is attached to the slide cylinder 26; and a biasing spring 27 which biases the slide cylinder 26 to an outer end 25b side.SELECTED DRAWING: Figure 4
【課題】 補助輪が接地する基準状態と、非接地となる跳上げ状態とを自在に切り替え可能とし、かつ補助輪の上下動作を安定に行う。【解決手段】 後輪8の両側でフレーム4に固定される一対のブラケット15と、各ブラケット15に傾動可能に枢支される一対の補助輪具16と、一対の補助輪具16を一体傾動可能に連結する連結バー17とを具える。補助輪具16は、ブラケット15に内端部25aが枢支される傾動アーム25と、傾動アーム25にスライド可能に外挿されるスライド筒26と、スライド筒26に取り付く補助輪18と、スライド筒26を外端25b側に付勢する付勢バネ27とを具える。【選択図】図4
AUXILIARY WHEEL DEVICE FOR BICYCLE
自転車用の補助輪装置
2018-06-14
Patent
Electronic Resource
Japanese
IPC: | B62H CYCLE STANDS , Fahrrad- oder Motorradständer |