The pretensioner comprises a base, a supporting frame, a sealing assembly and a connecting structure, wherein the base is provided with a first containing pipeline and a second containing pipeline which communicate with each other; the sealing assembly comprises a sheath which is used for sealing the side end of the first containing pipeline and receiving air pressure transmitted by the air outlet channel. The connecting structures are arranged at the two opposite side ends of the base and the supporting frame and connect the supporting frame to the base in the extending direction and the connecting direction. According to the embodiment of the invention, the support frame is connected to the base through the connecting structure in the extension direction and the connecting direction respectively, so that the connecting mode of the support frame and the base is simplified, and the support frame and the base are convenient to mount and dismount. Besides, the protective sleeve in the sealing assembly is opposite to the air outlet channel, after air pressure provided by the air generating device is transmitted through the air outlet channel, the air pressure can be directly applied to the protective sleeve, and compared with the prior art that the air pressure is sprayed to the steel wire rope or the sealing ring, the service life of the steel wire rope and the sealing ring can be effectively prolonged.

    本申请公开了一种预紧器包括:具有相互连通的第一容置管道和第二容置管道的基座、支撑架,密封组件、连接结构;密封组件包括护套,护套用于密封第一容置管道的侧端并接收出气通道传输的气压;连接结构设置在基座和支撑架相对的两侧端,并沿延展方向和连接方向将支撑架连接在基座。本申请实施例通过连接结构分别在延展方向和连接方向将支撑架连接在基座,使得支撑架和基座的连接方式简化,这样就便于支撑架和基座的安装和拆卸。另外,密封组件中的护套与出气通道相对,当气体发生装置提供的气压通过出气通道传输后,可直接将该气压的压力施加在护套上,相对于现有技术喷到钢丝绳或是密封圈上,可有效保护钢丝绳、密封圈的使用寿命。


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    Title :

    Pre-tightener


    Additional title:

    一种预紧器


    Contributors:
    HOU PUHUA (author) / WANG XIAOCHUN (author) / LI YIWEN (author)

    Publication date :

    2023-10-24


    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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