Takata Corporation

Joyson Safety Systems Germany Gmbh

Takata Petri Ag

Thomas Schwer

Roland Schnabl

Walter Scherzinger

Robert Fleischmann

Armin Toth

Peter Baumgartner

Michael Fehring

Hermann Hasse

Jochen Lang

Christoph Pechhold

Michael Bischoff

Carsten Felber

Joachim Nuesseler

Thomas Rupp

Dominic Reutter

Karl-Friedrich Haug

Dirk Buchlaub

The invention relates to a belt retractor for a safety belt, having: a belt reel () for winding up the safety belt; a locking base () which during normal operation is conjointly rotated with the belt reel and the rotary motion of which upon abrupt belt extraction is locked by means of a locking mechanism; and a belt force limiting installation which upon locking of the locking base permits relative rotation between the belt reel and the locking base. It is provided according to the invention that the belt retractor has a deactivation installation which after a predefined maximum relative rotary angle between the locking base and the belt reel blocks the relative rotation which is permitted between the belt reel and the locking base by the belt force limiting installation and, on account thereof, deactivates the belt force limiting installation.

Belt retractor

A belt retractor for a safety belt, having a belt reel for winding or unwinding the safety belt, and a belt force limiting installation which comprises a first and second torsion bar for limiting belt force. The belt retractor has a free-wheeling transmission which operates depending on the rotation angle and which after activation of the belt force limiting installation initially leaves the second torsion bar so as to be inactive, while the first torsion bar for limiting belt force is already being twisted, and the free-wheeling transmission activates the second torsion bar as soon as the free-wheeling transmission has been rotated about a predefined maximum free-wheeling rotation angle.

The disclosed seat belt tensioner for a seat belt system may comprise a seat belt spindle, a gearwheel connected to the seat belt spindle, and a latching pawl for locking the seat belt spindle in the tensioned position by engaging in the teeth of the gearwheel. The latching pawl may be configured to be brought into a first pawl position for blocking the gearwheel in the seat belt unrolling direction and into a second pawl position for blocking the gearwheel in the seat belt-tensioning direction of rotation. The latching pawl may also be configured to perform a first pivot-over operation from the first pawl position into the second pawl position and to perform a second pivot-over operation from the second pawl position into the first pawl position when the gearwheel exerts a force on the latching pawl that exceeds a predetermined force required for the respective pivoting-over operation.

Seat belt tensioner

The disclosed seat belt tensioner is for a seat belt safety system that may comprise a seat belt spindle, a drive motor for driving the seat belt spindle, and a gear connected to the drive motor. The gear may be a mechanical automatic gear that shifts automatically as a function of load

An arrangement for automatically supporting a vehicle occupant in a vehicle seat when lateral dynamic forces are acting includes a restraint system for securing an upper body of the vehicle occupant in a longitudinal direction of the vehicle as a function of the lateral dynamics.

Restraint system

The disclosed seat belt tensioner may comprise a drive motor, a gear connected to the drive motor, and a seat belt spindle connected to the gear by a spindle clutch. The spindle clutch may have spindle clutch pawls, which engage in pawl teeth of the seat belt spindle to couple the seat belt spindle and the gear. The spindle clutch may also comprise a synchronization pawl configured to alit the pawl teeth before the spindle clutch pawls engage in the pawl teeth.

Growing community of inventors

Illertissen, Germany

Thomas Schwer