SEAT BELT RETRACTOR AND SEAT BELT DEVICE

• Main Authors: NEMOTO DAICHI, UCHIBORI HAYATO
• Format: Patent
• Language: English; Japanese
• Published: 24.12.2015
• Subjects: PERFORMING OPERATIONS; TRANSPORTING; VEHICLES IN GENERAL; VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISEPROVIDED FOR

PROBLEM TO BE SOLVED: To provide a seat belt retractor which can improve the constraint performance of an occupant while improving an energy absorption property, and a seat belt device.SOLUTION: A seat belt retractor 1 comprises a spool 2 for winding a webbing W which constrains an occupant, a shaft 3 inserted into an axial core of the spool 2, and a locking base 4 which is connected to the shaft 3, and can be switched to a rotating state and a non-rotating state. The seat belt retractor also comprises an energy absorption device 5 which can vary an energy absorption amount according to relative rotation speeds of the spool 2 and the shaft 3, and a load adjusting member 6 which blocks or reduces load transmission when a load not smaller than a threshold is applied to the shaft 3 or the spool 2. The spool 2, the shaft 3, the locking base 4, the energy absorption device 5 and the load adjusting member 6 are connected to one another in series. 【課題】エネルギー吸収特性を向上させつつ乗員の拘束性を向上させることができる、シートベルトリトラクタ及びシートベルト装置を提供する。【解決手段】シートベルトリトラクタ１は、乗員を拘束するウェビングＷの巻き取りを行うスプール２と、スプール２の軸心に挿通されるシャフト３と、シャフト３に接続され回転状態と非回転状態とに切り替え可能なロッキングベース４と、を備え、スプール２とシャフト３との相対回転速度に応じてエネルギー吸収量を変動可能なエネルギー吸収装置５と、シャフト３又はスプール２に閾値以上の荷重が負荷された場合に荷重伝達を遮断又は低減する荷重調整部材６と、を備え、スプール２、シャフト３、ロッキングベース４、エネルギー吸収装置５及び荷重調整部材６は、直列に接続されている。【選択図】図１