The invention relates to the technical field of vehicle safety protection devices, in particular to a pre-tightening device and a safety belt retractor. The pre-tightening device comprises a guide pipe and a pre-tightening assembly, the pre-tightening assembly comprises at least one mass body and an isolation piece, and the isolation piece tightly wraps the outer side of the mass body. The mass body wrapped by the isolation piece can be stuffed into the guide pipe, and the mass body and the guide pipe are isolated by the isolation piece with the hardness lower than that of the mass body and the guide pipe; when the pre-tightening device is not detonated, the pre-tightening assembly is stored in the guide pipe, the isolation piece is isolated between the mass body and the guide pipe, and therefore when the pre-tightening device vibrates due to vibration of a vehicle and the like, collision between the mass body and the guide pipe and noise generated by collision can be reduced to a certain degree; when a plurality of mass bodies are arranged, the mass bodies are wrapped and fixed through the isolation pieces, and collision among the mass bodies and noise generated by collision can also be avoided.

    本申请涉及车辆安全保护装置技术领域,尤其是涉及一种预紧装置及安全带卷收器。预紧装置包括导向管和预紧组件,预紧组件包括至少一个质量体和隔离件,隔离件紧密地包覆于质量体的外侧。被隔离件包裹的质量体能够被塞入导向管的内部,质量体和导向管之间被硬度低于二者的隔离件隔离开来;在预紧装置未起爆时,预紧组件存放于导向管内,隔离件隔离在质量体和导向管之间,从而当预紧装置因比如车辆振动而振动时,能够在一定程度上降低质量体与导向管之间的碰撞以及因碰撞而产生的噪音;当质量体为多个时,通过隔离件对多个质量体的包裹固定,也能够避免多个质量体之间的碰撞以及因碰撞而产生的噪音。


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    Titel :

    Pre-tightening device and safety belt retractor


    Weitere Titelangaben:

    预紧装置及安全带卷收器


    Beteiligte:
    GAO FENG (Autor:in) / HU YANSHU (Autor:in) / WU MINGWEI (Autor:in) / LIU YANGUANG (Autor:in)

    Erscheinungsdatum :

    2022-07-29


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

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



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