| 摘要 |
<p>The device according to the invention comprises a control device 18 with an electromagnetic relay that is electrically connected in an electrical circuit both with respect to means for electrical power supply 13, and with respect to the impact sensors of the vehicle itself, for example deceleration sensors of the safety devices 14, 15 of the vehicle, through an electronic control unit 12, and controls the operating position of a control pushbutton P - between a rest position and a working position - depending on its state of electrical connection or disconnection, in such a way that in a first state of electrical connection, the said control device 18 causes the said pushbutton P to move to and remain in the said position of rest, in which a safety belt connected to the device is correctly fastened and kept fastened, while in the state of electrical disconnection - determined by exceeding a threshold value of a physical reference magnitude that is predetermined and detected by the said sensors - the said control device 18, after a predetermined delay time (for example, about 40 s), causes the said pushbutton P to move to the working position, automatically releasing the said safety belt. <IMAGE></p> |
