To provide a seat belt retractor capable of preventing excessive load from acting on a seat belt.SOLUTION: A seat belt retractor includes: a spool which takes up a seat belt; a lock mechanism which allows rotation of the spool during the non-operation time and prevents the rotation of the spool in a drawing direction of the seat belt during the operation time; a first energy absorption mechanism which is deformed by the rotation of the spool in the drawing direction and rotation prevention by the lock mechanism; a power transmission mechanism which adds a second load generated by power of a motor to a first load generated by the deformation of the first energy absorption mechanism; and a second energy absorption mechanism which lowers a limit load increased by adding the second load to the first load by its own deformation.SELECTED DRAWING: Figure 2

    【課題】過大な荷重がシートベルトに作用することを防止可能なシートベルトリトラクタの提供。【解決手段】シートベルトを巻き取るスプールと、非作動時に前記スプールの回転を許容し、作動時に前記シートベルトの引き出し方向への前記スプールの回転を阻止するロック機構と、前記引き出し方向への前記スプールの回転と前記ロック機構による回転阻止とにより変形する第1のエネルギー吸収機構と、前記第1のエネルギー吸収機構の変形により発生する第1の荷重に、モータの動力により発生する第2の荷重を付加する動力伝達機構と、前記第1の荷重に前記第2の荷重を付加することにより増大する制限荷重を、自身の変形により低下させる第2のエネルギー吸収機構とを備える、シートベルトリトラクタ。【選択図】図2


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    Title :

    SEAT BELT RETRACTOR AND SEAT BELT DEVICE


    Additional title:

    シートベルトリトラクタ及びシートベルト装置


    Contributors:

    Publication date :

    2021-02-12


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    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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