PROBLEM TO BE SOLVED: To provide a locking tongue and seat belt device which can reduce the size and weight of a locking tongue, and improve the clamping performance at the vehicle collision.SOLUTION: A lock member 30 which is held in a rotatable manner in a webbing insertion hole 12 of a tongue body 11 includes: a short radius part 35 which has a shorter distance R1 from the center O of a rotational shaft 32 and whose outer cross section is a convex surface; and a long radius part 36 which has a longer distance R2 from the center O of the rotational shaft 32 than that of the short radius part 35 and whose outer cross section is the convex surface. The short radius part 35 clamps webbing 3 between one surface 24 constituting the webbing insertion hole 12 and itself with rotation of the lock member 30 in the prescribed direction by the webbing 3 at the normal use. The long radius part 36 clamps the webbing 3 between the one surface 24 constituting the webbing insertion hole 12 and itself with deformation movement of the rotational shaft 32 of the lock member 30 and further rotation of the lock member 30 in the prescribed direction by the webbing 3 when the force equal to or greater than a prescribed value such as the time of vehicle collision is applied to the webbing.SELECTED DRAWING: Figure 3

    【課題】ロッキングタングの小型軽量化を図ると共に、車両衝突時のクランプ性能の向上を図ることのできるロッキングタング及びシートベルト装置を提供する。【解決手段】タング本体11のウェビング挿通孔12内で回動可能に保持されるロック部材30は、その回転軸32の中心Oからの距離R1が短い、外形断面が凸曲面である短半径部35と、短半径部35よりも回転軸32の中心Oからの距離R2が長い、外形断面が凸曲面である長半径部36と、備えている。短半径部35は、通常使用時において、ウェビング3によってロック部材30が所定の方向に回動することで、ウェビング挿通孔12を構成する一方の面24との間でウェビング3をクランプする。長半径部36は、車両衝突時のようなウェビングに所定値以上の力が作用したとき、ロック部材30の回転軸32が変形移動すると共に、ウェビング3によってロック部材30が所定の方向にさらに回動することで、ウェビング挿通孔12を構成する一方の面24との間でウェビング3をクランプする。【選択図】図3


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    Title :

    LOCKING TONGUE AND SEAT BELT DEVICE


    Additional title:

    ロッキングタング及びシートベルト装置


    Contributors:

    Publication date :

    2018-04-12


    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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