To enable generation of an EA LOAD which is wider and flexible.SOLUTION: A seat belt retractor 1 includes: a first torsion bar 51 which is coaxially provided with a spool 2 within the spool 2 and twisted according to a tensile load transmitted from webbing 104 to the spool 2 to absorb kinetic energy of an occupant 109 when a lock mechanism 4 is operated; a second torsion bar 52 which is provided at the outer periphery side of the first torsion bar 51 in the spool 2 and twisted according to a relative low tensile load to absorb kinetic energy; a switch mechanism 53 which switches a load transmission path so that the tensile load is applied to one of the first torsion bar 51 and the second torsion bar 52; and a load adjustment mechanism 6 which applies a drive load generated by a drive force output from the motor 61 to the spool 2 to adjust the tensile load applied to the first torsion bar 51 or the second torsion bar 52.SELECTED DRAWING: Figure 4

    【課題】より幅広いフレキシブルなEA荷重を発生することを可能とする。【解決手段】シートベルトリトラクタ1は、スプール2内にスプール2と同軸上に設けられ、ロック機構4の作動時にウェビング104からスプール2に伝達される引張荷重に応じて捻れることによって乗員109の運動エネルギを吸収する第一トーションバー51と、スプール2内において第一トーションバー51の外周側に設けられ、相対的に低い引張荷重に応じて捻れることによって運動エネルギを吸収する第二トーションバー52と、第一トーションバー51と第二トーションバー52の一方に引張荷重が付加されるように切り替える切替機構53と、モータ61から出力される駆動力による駆動荷重をスプール2に付加して、第一トーションバー51または第二トーションバー52に付加される引張荷重を調整する荷重調整機構6と、を備える。【選択図】図4


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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 :

    2024-06-13


    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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