The invention relates to the technical field of vehicles, in particular to a steering transmission shaft. The device comprises a first shaft assembly, a second shaft assembly and a third shaft assembly. The second shaft assembly comprises an outer sleeve unit, a middle sleeve unit and an inner sleeve unit. The outer sleeve unit comprises an outer sleeve module, an outer limiting groove and an outer clamping spring. The middle sleeve unit comprises a middle sleeve module, a middle boss, a middle clamping spring and a middle limiting groove. The outer sleeve module is arranged on the peripheral side of the middle sleeve module in a sleeving mode. The middle sleeve module comprises a middle torsion part and a middle side wall. The inner sleeve unit comprises an inner sleeve module and an inner boss. The middle sleeve module is arranged on the peripheral side of the inner sleeve module in a sleeving mode. The steering drive shaft includes an extended state. The extension state includes that the middle boss moves in the axial direction of the outer sleeve module to abut against the end, close to the first shaft assembly, of the outer clamping spring, the resistance of the middle clamping spring to the inner boss is larger than the friction force between the middle side wall and the outer sleeve module, and the inner boss is arranged in the space surrounded by the middle clamping spring. Therefore, the problem of how to prolong the service life of the steering transmission shaft is solved.
本发明涉及车辆技术领域,具体而言,涉及一种转向传动轴。装置包括:第一轴组件、第二轴组件、第三轴组件。第二轴组件包括外套单元、中套单元、内套单元。外套单元包括外套模块、外限位槽、外卡簧。中套单元包括中套模块、中凸台、中卡簧、中限位槽。外套模块套设在中套模块的外周侧。中套模块包括中扭转部、中侧壁。内套单元包括内套模块、内凸台。中套模块套设在内套模块的外周侧。转向传动轴包括延展状态。延展状态包括中凸台沿外套模块的轴向移动至与外卡簧靠近第一轴组件的一端抵接,中卡簧对内凸台的阻力大于中侧壁与外套模块之间的摩擦力,内凸台设置在中卡簧包围的空间内。这样就解决了如何提高转向传动轴寿命的问题。
Steering transmission shaft
一种转向传动轴
2024-12-03
Patent
Electronic Resource
Chinese