초록 ▼

A passenger restraint system for motor vehicles is equipped with a safety belt, a belt tensioner, an inflatable airbag and with a switch member which detects the functional position of the safety belt and which is arranged in a belt lock of the safety belt. Activation of the airbag and of the belt t

A passenger restraint system for motor vehicles is equipped with a safety belt, a belt tensioner, an inflatable airbag and with a switch member which detects the functional position of the safety belt and which is arranged in a belt lock of the safety belt. Activation of the airbag and of the belt tensioner takes place in dependence on the functional position of the safety belt. In order to reduce the risk of injury by the safety belt at medium speeds during the operative period of the airbag, an activatable belt-clamping device on the belt lock and an activatable belt pull-out detent for the shoulder belt are provided. In the presence of a second threshold signal indicating a moderate to serious injury, the airbag is released, the belt-clamping device is arrested. Additionally, the belt pull-out detent is released during the operative period of the airbag.

대표청구항 ▼

Passenger restraint system for motor vehicles comprising: at least one safety belt including a lap belt portion and a shoulder belt portion for which belt tensioner means is provided; at least one airbag; at least one switch means is a belt lock of the safety belt for detecting a functional position

Passenger restraint system for motor vehicles comprising: at least one safety belt including a lap belt portion and a shoulder belt portion for which belt tensioner means is provided; at least one airbag; at least one switch means is a belt lock of the safety belt for detecting a functional position of the safety belt; a sensor which transmits threshold signals at least in dependence on effective changes of speed of the vehicle; wherein an activation of the airbag and of the belt tensioner means takes place in dependence of a functional position of the safety belt as detected by the switch means; wherein there is an activatable belt-clamping device on the belt lock and an activatable belt pull-out detent for the shoulder belt portion of the safety belt; wherein the sensor transmits at least three different threshold signals; and wherein there is a control unit means which, when the safety belt is fastened and when a second of the three threshold signals occurs to indicate a moderate to serious accident, releases the airbag, arrests the belt-clamping device and releases the belt pull-out detent during an operative releasing period of the airbag and which, when the safety belt is fastened and when the third threshold signal occurs to indicate a very serious accident, arrests the belt pull-out detent.