The invention discloses a safety belt retractor. The safety belt retractor comprises a mandrel body, a pre-tightening wheel and a locking shaft head which are sequentially and coaxially arranged and are installed in a matched mode, wherein the pre-tightening wheel is arranged at the end, facing the mandrel body, of the locking shaft head in a sleeving mode; a central boss is arranged on the axial end face, facing the mandrel body, of the pre-tightening wheel; and in an assembly state, the central boss is matched in a groove formed in the inner end face of the mandrel body. According to the invention, the central boss is matched in the groove formed in the inner end face of the mandrel body, so the central boss can play a role in supporting the inner end face of the mandrel body when the mandrel body and the pre-tightening wheel rotate relative to each other, and then it can be guaranteed that the mandrel body is not prone to position deviation due to rotation; and therefore, the concentricity of the mandrel body, the pre-tightening wheel and a force limiting rod is ensured.

    本申请公开了一种安全带卷收器,包括:依次同轴设置并相互配合安装的芯轴本体,预紧轮,锁止轴头;预紧轮套装在所述锁止轴头朝向所述芯轴本体的一端;预紧轮朝向所述芯轴本体的轴向端面上设置有中央凸台;装配状态时,中央凸台适配于所述芯轴本体的内端面上设置的凹槽中。本申请将中央凸台适配于所述芯轴本体的内端面上设置的凹槽中,可使得芯轴本体在与预紧轮相互转动时,中央凸台可起到支撑芯轴本体的内端面的作用,继而可以保证芯轴本体不会轻易因转动而发生位置的偏移,进而保证了芯轴本体与预紧轮和限力杆的同心度。


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    Title :

    Safety belt retractor


    Additional title:

    一种安全带卷收器


    Contributors:
    ZHAO HONG (author) / SHI BINGJUN (author) / SUN BO (author) / WU JIANAN (author)

    Publication date :

    2021-06-18


    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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