The invention discloses an adjustable backrest device of an electric bicycle. The adjustable backrest device comprises a fixed mounting part, a backrest adjusting part and a mounting width adjusting part. The fixed installation part is composed of an installation base, a gasket, a nut and a fixing clamp upper portion, and it can be guaranteed that the backrest device is stably fixed to a rear frame of the electric vehicle. The backrest adjusting part is composed of a first hinge, a first rotary knob, a second hinge, a telescopic rod, a first supporting rod, a second supporting rod, a second rotary knob, a pre-tightening spring, a limiting block, a rotating base, a rotating pin, a mounting base, a sliding rail and a T-shaped nut, and the angle and the telescopic distance of the backrest can be effectively adjusted and controlled. The installation width adjusting part is composed of a transverse rod, a two-way stud, an installation base and a backrest, the width of the device can be adjusted, and the applicability of the device is improved. Compared with the prior art, the device has the advantages of being compact in structure, convenient to install, wide in applicability, convenient to adjust, high in reliability and the like, and the riding comfort of a rider can be improved.
本发明公开了一种可调式电动自行车靠背装置,包括固定安装部分,靠背调整部分,安装宽度调整部分。固定安装部分由安装座、垫圈、螺母和固定夹上部组成,能够保证靠背装置稳定的固定在电动车后车架上。靠背调整部分由合页一、旋钮一、合页二、伸缩杆、支撑杆一、支撑杆二、旋钮二、预紧弹簧、限位块、转动座、转动销、安装座、滑轨和T型螺母组成,能够有效地对靠背角度和伸缩距离进行调整控制。安装宽度调整部分由横向杆、双向螺柱、安装座和靠背组成,可实现装置宽度的调整,以提高装置的适用性。与现有技术相比,本发明具有结构紧凑、加装方便、适用性广,调整方便和可靠性高等优点,能够有提高骑乘者的骑乘舒适性。
Adjustable electric bicycle backrest device
一种可调式电动自行车靠背装置
2022-11-04
Patent
Elektronische Ressource
Chinesisch
IPC: | B62J Fahrrad- oder Motorradsättel oder -sitze , CYCLE SADDLES OR SEATS |