| 摘要 |
<p>Locking means for safety belts of the reel belt type intended for use preferably in vehicles, and provided with a strap webbing (3), which against bias of a spring can be unwound from a strap winding-up device. The same is comprising a strap reel rotatably journalled therein and a pawl mechanism (8), which is changeable between a position releasing the strap reel and a locking position, in which the strap reel is maintained locked against rotation in one direction. The strap winding-up device also comprises an activating means (7) for the change-over of the pawl mechanism to a locked position, when the activating means is subjected to an acceleration exceeding a predetermined value. The activating means exhibits a body (11) of inertia with a determined basal surface (14). The body of inertia can occupy a central rest position with a basal surface resting on a carrying surface (19), or a peripheric activated position, in which the body of inertia is tilted about a first pivoting centre (45). The activating means also exhibits a transmission element (12) which is provided to sense the positions of the body of inertia and to change-over the pawl mechanism (8). The activating means (7) exhibiting a second pivoting centre (44), about which the transmission element is arranged to pivot in connection with the change-over of the body (11) of inertia between the rest position and the activated position. The transmission element is provided with a shank (33), which in the rest position occupies a centric position relative to the axis of symmetry of the body of inertia. The same is provided to in a third pivoting centre (46) for the activating means (7) cooperate with its end with a guide surface (35) in the body of inertia in such a manner that the end of the shank is moved sideways by the body of inertia when the same is changed-over to its activated position. </p> |
