The invention provides a pre-tightening type two-stage force limiting retractor and a safety belt device. The pre-tightening type two-stage force limiting retractor comprises a force limiting steel wire, a force limiting rod, a fixed shaft, a pre-tightening wheel, a ratchet ring and a movable shaft. One end of the force limiting rod is fixed to the fixed shaft, and the other end of the force limiting rod extends into a first containing groove in the movable shaft and is limited in the first containing groove. One end of the force limiting steel wire is fixed to the fixed shaft, and the other end of the force limiting steel wire sequentially penetrates through the fixed shaft, the ratchet ring and the pre-tightening wheel and then stretches into a second containing groove in the movable shaft. When the movable shaft rotates, the force limiting rod is driven to rotate synchronously, the force limiting steel wire is driven to be pulled out of the second containing groove and wound aroundthe fixed shaft, and the groove in the fixed shaft provides the containing space for the wound force limiting steel wire. The pre-tightening function can be achieved, the two-stage force limiting function is achieved through cooperation of the force limiting rod and the force limiting steel wire, the pre-tightening function enables passengers to be tightly attached to seats in case of emergency braking or head-on collision or rolling of an automobile, and the injury degree of the chest of the passengers is reduced through the two-stage force limiting function.
本发明提供一种预紧式二级限力卷收器及安全带装置,该预紧式二级限力卷收器包括:限力钢丝、限力杆、定轴、预紧轮、棘齿圈、动轴;限力杆的一端固定在定轴上,另一端伸入动轴内的第一容纳槽内,并限位在第一容纳槽内;限力钢丝一端的端头固定在定轴上,另一端依次穿过定轴、棘齿圈、预紧轮后,伸入动轴内的第二容纳槽内;动轴旋转时,带动限力杆同步旋转,并带动限力钢丝从第二容纳槽中拉出,并缠绕在定轴上,定轴上的凹槽为缠绕后的限力钢丝提供容纳空间;既能实现预紧功能,又采用限力杆和限力钢丝配合实现二级限力功能,在汽车万一出现紧急制动、正面碰撞或发生翻滚时,预紧功能使乘员紧贴座椅,二级限力功能减小乘员胸部的伤害程度。
Pre-tightening type two-stage force limiting retractor and safety belt device
一种预紧式二级限力卷收器及安全带装置
2020-05-08
Patent
Electronic Resource
Chinese
IPC: | B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR |
Pre-tightening force limiting type safety belt retractor
European Patent Office | 2023
|Pre-tightening force limiting retractor and safety belt device
European Patent Office | 2024
|Pre-tightening force limiting type retractor and pre-tightening device thereof
European Patent Office | 2022
|