The invention relates to a pre-tightening retractor. The pre-tightening retractor comprises a main frame, a fixed shaft arranged in the main frame, a pre-tightening wheel and a reel sleeving the fixedshaft, and a force limiting rod connected with the fixed shaft and the reel; a supporting ring is formed at the rear end of the pre-tightening wheel; the outer side wall of the supporting ring is supported on the main frame; and the inner side wall of the supporting ring is matched with the fixed shaft to form radial support for the front end of the reel. By the adoption of the technical scheme,the supporting ring is arranged on the pre-tightening wheel, the front end of the reel is supported through the supporting ring and the fixed shaft, pre-tightening force is balanced through the main frame, the pre-tightening wheel and the fixed shaft, the front end of the reel is prevented from making direct contact with the main frame, and the overshoot phenomenon caused by the pre-tightening force is eliminated.

    本发明涉及一种预紧式卷收器,包括有主框架、设于主框架内的定轴、套设在定轴上的预紧轮和卷轴、连接定轴和卷轴用的限力杆;所述预紧轮的后端形成有支撑环;支撑环的外侧壁支撑在主框架上;支撑环的内侧壁与定轴配合,形成对卷轴前端的径向支撑。采用本发明的技术方案,通过在预紧轮上设置支撑环,通过支撑环和定轴支撑起卷轴前端,利用主框架、预紧轮和定轴将预紧力平衡,避免卷轴前端与主框架直接接触,消除因预紧力导致的过冲现象。


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    Title :

    Pre-tightening retractor and safety belt device


    Additional title:

    预紧式卷收器及安全带装置


    Contributors:
    LEI YUYANG (author) / HU BO (author) / PU ZHIHUA (author) / WANG WEI (author)

    Publication date :

    2020-05-08


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR



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