Provided are a pretensioner, a retractor, and a seat belt device that can achieve weight reduction of a device by improving slidability of a power transmission member used for the pretensioner. A pretensioner includes a drive wheel for rotating the spool, and a power transmission unit for transmitting power to the drive wheel in an emergency. The power transmission unit includes a power transmission member for rotating the drive wheel, a pipe that contains the power transmission member, a gas generator for supplying a working gas into the pipe, and a housing that defines a passage for the power transmission member on an outer periphery of the drive wheel. The housing has a sliding member that is disposed at an outlet part of the pipe and that reduces frictional force between the housing and the power transmission member.


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    Title :

    PRETENSIONER, RETRACTOR, AND SEAT BELT DEVICE


    Contributors:

    Publication date :

    2017-09-14


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    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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