To provide a pretensioner, a retractor, and a seatbelt device capable of improving power transmission efficiency of a pressing member even when a resin rod-shaped guide member is bent.SOLUTION: A pretensioner 3 includes: a ring gear 31 connected to a spool 2; and a power transmission device 32 that transmits power to the ring gear 31 in an emergency. The power transmission device 32 includes: a resin rod-shaped power transmission member 32a; a bent cylindrical guide member 32b that guides the power transmission member 32a to the ring gear 31; a piston 32d provided between a gas generator 32c and the power transmission member 32a; and a spacer 32e provided between the piston 32d and the power transmission member 32a, a contacting part β between the power transmission member 32a and the spacer 32e forming a ball joint.SELECTED DRAWING: Figure 1

    【課題】樹脂ロッドの案内部材が屈曲している場合であっても押圧部材の動力伝達効率を向上することができる、プリテンショナ、リトラクタ及びシートベルト装置を提供する。【解決手段】プリテンショナ3は、スプール2に接続されたリングギア31と、緊急時にリングギア31に動力を伝達する動力伝達装置32と、を備えている。動力伝達装置32は、樹脂製のロッド形状を備えた動力伝達部材32aと、動力伝達部材32aをリングギア31に案内する曲げ加工された筒形状の案内部材32bと、ガス発生器32cと動力伝達部材32aとの間に配置されたピストン32dと、ピストン32dと動力伝達部材32aとの間に配置されたスペーサ32eと、を備え、動力伝達部材32aとスペーサ32eとの接触部βはボールジョイントを構成している。【選択図】図1


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    Title :

    PRETENSIONER, RETRACTOR, AND SEATBELT DEVICE


    Additional title:

    プリテンショナ、リトラクタ及びシートベルト装置


    Contributors:

    Publication date :

    2022-09-15


    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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