Safety belt device

Claim 1

A guide slit device for safety belts for vehicles comprising a holding part to be anchored in a vehicle, said holding part having an opening therein, a separate slit unit arranged within said opening and having a slit arranged to receive the band of the belt extending through the slit, said slit being defined by a lower wall having a supporting surface arranged to support and deflect the band which is pressed against the supporting surface of said slit with a force which is increased by an increased traction force acting on the band, said lower wall having penetrable portions of reduced thickness, a plurality of locking teeth fixed to the lower edge of said opening in said holding part and aligned with and directed toward said penetrable portions whereby the band may move freely in the slit when the locking teeth are retracted relative to said slit unit, said locking teeth being capable of penetrating said penetrable portions when said slit unit moves under the action of a traction force which exceeds a predetermined value so that said locking teeth will penetrate said penetrable portions and penetrate the band so as to lock it in a fixed position relative to the guide slit device.