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    • 3. 发明申请
    • SEATBELT RETRACTOR
    • 座椅延伸器
    • US20140084099A1
    • 2014-03-27
    • US14119458
    • 2012-05-29
    • Hiroyuki MiyoshiTomonari MatsunagaEri YamaneTomoe NakayamaHiroki Yamakawa
    • Hiroyuki MiyoshiTomonari MatsunagaEri YamaneTomoe NakayamaHiroki Yamakawa
    • B60R22/46
    • B60R22/46B60R22/4633
    • 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 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.
    • 牵开器包括卷绕织带的卷起鼓和预紧器单元,其使卷绕滚筒沿织带的卷绕方向旋转。 预紧器单元包括构造成与卷绕鼓相关联地旋转的小齿轮;活塞,其包括用于与小齿轮啮合的齿条,并使卷绕滚筒沿着卷绕方向通过小齿轮旋转;管状圆筒, 圆形横截面并且可移动地保持活塞,以及驱动机构来驱动活塞。 所述活塞在所述齿条的后表面侧还包括被配置为与所述气缸的内壁接触的接触面,所述气缸具有这样的管长度,以使所述接触部不会露出所述接触部的可动范围 活塞。