公开(公告)号：US4310128A

公开(公告)日：1982-01-12

申请号：US787534

申请日：1977-04-14

申请人： Masayuki Morita ,  Takashi Kawaharazaki ,  Toshiaki Shimogawa

发明人： Masayuki Morita ,  Takashi Kawaharazaki ,  Toshiaki Shimogawa

IPC分类号： B60R22/44 ,  A62B35/02 ,  B65H75/48

CPC分类号： B60R22/44 ,  B60R2022/4453 ,  B60R2022/446

摘要： A seat belt retracting and winding device in which a seat belt may be automatically retracted and wound on a winding reel under restoring or unwinding spring force of spiral springs. A cylindrical ratchet wheel is coaxially rotatably supported on a shaft of a winding reel, and is covered with a case attached to one of the side plates of a frame of the device. There are provided a first spiral spring disposed in a doughnut-shaped space defined between the case and the ratchet wheel, and a second spiral spring disposed in the ratchet wheel. The first spring has one end fixed to the case and the other end fixed to the ratchet wheel, while the second spring has one end fixed to the ratchet wheel and the other end fixed to the shaft of the reel. The ratchet wheel is formed with a plurality of ratchet teeth on its periphery, and a ratchet is pivotally disposed in the case for releasable engagement with the ratchet wheel teeth. While the seat belt is being paid out both the first and the second springs are wound, however, after the seat belt has been fastened to the vehicle occupant the engagement of the ratchet with the ratchet wheel locks the ratchet wheel against rotation, thereby preventing the first spring from exerting the unwinding spring force to the winding reel, thus reducing unpleasant restraining force applied to the vehicle occupant.

摘要翻译： 一种安全带回缩和卷绕装置，其中安全带可以在螺旋弹簧的恢复或释放弹簧力下自动地缩回并缠绕在卷绕的卷轴上。 圆筒形棘轮同轴可旋转地支撑在卷绕卷轴的轴上，并被安装在装置的框架的一个侧板上的壳体覆盖。 设置有设置在壳体和棘轮之间的环形空间中的第一螺旋弹簧和设置在棘轮中的第二螺旋弹簧。 第一弹簧的一端固定在壳体上，另一端固定在棘轮上，而第二弹簧的一端固定在棘轮上，另一端固定在卷轴的轴上。 棘轮在其周边上形成有多个棘齿，并且棘轮枢转地设置在壳体中以与棘轮齿可释放地接合。 当安全带被支付时，第一弹簧和第二弹簧都被缠绕，然而，在安全带已经紧固到车辆乘员之后，棘轮与棘轮的接合锁定棘轮以防止旋转，从而防止 第一弹簧从展开弹簧力施加到卷绕卷轴上，从而减少施加到车辆乘客的不愉快的约束力。