| 摘要 |
A safety-belt locking device is interposed between and interacts with the hub and spindle of the safety-belt drum about which the safety-belt is wound. The spindle of the safety-belt drum is connected to a free-running mechanism, of conventional construction, which allows the spindle the normally rotate with the hub and permit unwinding of the belt to thereby interfere as little as possible with the movement of the user. The spindle is locked against movement with the hub by the free-running mechanism when a collision occurs, and the interacting locking and braking components permit limited forcible rotation of the hub relative to the spindle before the hub is locked against rotative movement. In certain embodiments of the invention, components associated with the spindle react with the deformable elements associated with the hub to permit limited forcible or retarded rotation of the hub relative to the spindle before the hub is locked against movement. When the hub is locked against movement, the belt is no longer extensible. In other forms of the invention, the braking action is exerted on the hub by interacting braking elements or by a viscous fluid while interacting stop elements ultimately prevent any movement of the hub relative to the spindle. |
