Autoliv Development Ab

Robert Svensson

Erik Rydsmo

Bengt Dahlquist

Jonas Sterner

Gôran Carlsson

Lennart Pettersson

Tomas Blomberg

Torbjörn Larsson

Bengt L Andersson

A belt retractor for a motor vehicle seat belt, with a belt shaft () in a housing frame, a profile head () which can be locked and a force limitation device () with a first end () coupled to the profile head () and a second end () is coupled to the belt shaft () and which allows a force-limited relative rotation of the belt shaft () with regard to the locked profile head (). A connection tube () surrounds the force limitation device () with a locking hook (), which during the relative rotation with regard to the profile head () slides over an external circumference of the connection tube () and on reaching a predetermined angle of rotation of the belt shaft () engages in a locking groove () on the connection tube (), the coupling the connection tube () to the belt shaft () The connection tube () is produced in one piece with the profile head (), so that on engagement of the locking hook () in the locking groove () the belt shaft () is locked via the profile head () to the housing frame in a non-rotational manner.

Belt retractor having a force limitation device

A quick-action closure for the end fitting of a safety belt, whereby the quick-action closure includes an insertion tongue which can be inserted into a closure housing and which can be locked therein by means of a locking element disposed in a mobile manner between a locking position and a release position, and whereby the locking element can be transferred from its locking position into its release position by means of an actuating element which can be inserted into the closure housing. A safety element () is disposed in the closure housing () mounted at its center of gravity () rotatable between a safety position and a rest position, the safety element in its safety position fixing the locking element () in its locking position and, in its rest position, releasing the locking element (), whereby the safety element () is held in its safety position by the action of a spring ().

Shockproof, quick-action closure for an end fitting

A self-locking safety belt device has a housing and a reeling shaft rotatably mounted therein. A vehicle-sensitive control system including a control disc acts on a locking member for locking rotation of the reeling shaft when the vehicle sensitive control system is activated. A control device including a switching lever acts on the control disc such that in a release position the switching lever is disengaged from the control disc so that the control disc rotates freely with the reeling shaft. In a locking position the switching lever secures the control disc against rotation and initiates locking of the reeling shaft. The control device has first and second gear wheels with a switching cam. The first gear wheel is connected to the reeling shaft. The second gear wheel is spaced at a distance from the first gear wheel and is rotatably mounted at the housing. The control device also has a crown gear enclosing and meshing with the first and second gear wheels. The crown gear is slidably mounted at the housing. The switching cams of the first and second gear wheels cooperate with a switching cam of the crown gear to move the crown gear between two control positions for controlling the release position and the locking position of the switching lever.

Self-locking safety belt device with retractor switching function

Growing community of inventors

Fristadt, Sweden

Robert Svensson