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    • 1. 发明公开
    • SEATBELT RETRACTOR
    • EP2716506A1
    • 2014-04-09
    • EP12792494.2
    • 2012-05-29
    • Ashimori Industry Co., Ltd.
    • MIYOSHI HiroyukiMATSUNAGA TomonariYAMANE EriNAKAYAMA TomoeYAMAKAWA Hiroki
    • B60R22/46
    • B60R22/46B60R22/4633
    • It is aimed to provide a seatbelt retractor whose manufacturing cost is reduced. A retractor includes a windup drum that winds webbing and a pretensioner unit that causes the windup drum to rotate in a windup direction of the webbing. The pretensioner unit includes a pinion gear configured to rotate in association with the windup drum, a piston that includes a rack for meshing with the pinion gear (165) and causes the windup drum to rotate in the windup direction through the pinion gear, a tubular cylinder that has a circular cross-section and movably holds the piston, and a drive mechanism that drives the piston. The piston further includes, on a rear surface side of the rack, a contact surface configured to come into contact with an inner wall of the cylinder, and the cylinder has such a tube length as not to expose the contact portion in a movable range of the piston.
    • 目的是提供一种制造成本降低的安全带卷收器。 卷收器包括卷绕卷带的卷取卷筒和使卷取卷筒沿带卷绕方向旋转的预张紧器单元。 预张紧器单元包括:小齿轮,该小齿轮构造成与卷绕滚筒相关联地旋转;活塞,其包括用于与小齿轮(165)啮合并且使卷绕滚筒通过小齿轮在卷起方向上旋转的齿条;管状 具有圆形横截面且可移动地保持活塞的气缸以及驱动活塞的驱动机构。 所述活塞在所述齿条的后表面侧还包括接触表面,所述接触表面被构造成与所述圆筒的内壁接触,并且所述圆筒具有这样的管长度以使得所述接触部分不暴露在 活塞。
    • 3. 发明公开
    • SEATBELT RETRACTOR
    • EP2716507A1
    • 2014-04-09
    • EP12793883.5
    • 2012-05-17
    • Ashimori Industry Co., Ltd.
    • NAKAYAMA TomoeYAMANE Eri
    • B60R22/46
    • B60R22/4628B60R22/4633B60R2022/4661B60R2022/468
    • A retractor includes a pretensioner unit (16), the pretensioner unit (16) including a pinion gear (165) configured to rotate in association with a windup drum, a piston (164) that causes the windup drum to rotate in a direction of winding webbing through the pinion gear (165), a cylinder (162) that holds the piston (164), and a gas generating member that fills an interior space (NS) of the cylinder with a gas to drive the piston (164). The cylinder (162) includes a gas release hole (625) on a side surface thereof, the gas release hole (625) being provided to be located: in an initial position of the piston (164) before gas generation, at a position at which the interior space (NS) and an outside thereof are not continuous with each other through the gas release hole (625); and after gas generation, at a position at which the interior space (NS) that has changed upon moving of the piston and the outside are continuous with each other through the gas release hole (625).
    • 卷收器包括预张紧器单元(16),预张紧器单元(16)包括构造成与卷取卷筒相关联地旋转的小齿轮(165),使卷绕筒沿卷绕方向旋转的活塞(164) 通过小齿轮165,保持活塞164的气缸162以及用气体填充气缸的内部空间NS以驱动活塞164的气体发生部件。 气缸(162)在其侧面上包括气体释放孔(625),气体释放孔(625)设置成在气体产生之前位于活塞(164)的初始位置,在 其内部空间(NS)和其外部不通过排气孔(625)彼此连续; 并且在气体产生之后,在活塞和外部移动时改变的内部空间(NS)通过排气孔(625)彼此连续的位置处。