The invention belongs to the technical field of bicycles, and relates to a bicycle chain falling and breaking protection device which is characterized by comprising a bicycle body, a limiting device, a chain and a second spring; the bicycle body comprises a rear lower fork, a chain disc and a flywheel, and the chain disc is in transmission connection with the flywheel through the chain; the limiting device is fixedly connected to the side edge of the rear lower fork, the limiting device and the chain plate are located on the same side of the bicycle body, and the limiting device is close to the chain disc; the limiting device comprises a transverse mounting block and a vertical guide block, the vertical guide block is fixedly arranged on the upper end face of the transverse mounting block, and the vertical guide block is perpendicular to the transverse mounting block. According to the bicycle chain falling and breaking protection device, the limiting device is adopted, a limiting part on a moving block can clamp the tooth part of the chain disc in the first time when the chain falls off or breaks, so that the situation that a rider misses the step and topples when stepping on the pedal forcefully is prevented, the safety of the rider is protected, and accidents are avoided.
本发明属于自行车技术领域,一种自行车链条脱落断裂保护装置,其特征在于,包括自行车本体、限位装置、链条及第二弹簧;自行车本体包括后下叉,链盘及飞轮,链盘与飞轮之间通过链条传动连接;限位装置固定连接在后下叉的侧边,限位装置与链盘位于自行车本体的同一侧,限位装置靠近链盘;限位装置包括横向安装块及竖向导向块,竖向导向块固定设置于横向安装块的上端面,竖向导向块垂直于横向安装块。本发明通过限位装置可以在链条脱落或者断裂的第一时间内,使得移动块上的限位部将链盘的齿部卡住,防止骑行者在用力踩踏脚板的时候踏空,连人带车往前栽倒,保护骑行者的安全,避免意外的发生。
Bicycle chain falling and breaking protection device
一种自行车链条脱落断裂保护装置
2021-07-09
Patent
Electronic Resource
Chinese
IPC: | B62M RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES , Antrieb von Radfahrzeugen oder Schlitten durch den Fahrer |
Electric bicycle capable of preventing chain from falling automatically
European Patent Office | 2021
|Bicycle wheel disc capable of preventing chain from falling off
European Patent Office | 2021
|