Abstract: A belt retractor (10) of a seatbelt system comprises a belt tensioner (11) which is adapted to rotate a belt reel (14) of the belt retractor (10) accommodated in a belt retractor frame (12), wherein the belt retractor frame (12) is closed by a cover (16) on the tensioner side in the area of the spindle of the belt reel (14) and in the cover (16) a bearing for the belt reel (14) is provided. The cover (16) includes a first pot-shaped cover part (16a) which is mounted directly on the belt retractor frame (12) and has a side wall (24) merging into a flat portion (26). In the flat portion (26) an opening (32) is spared and a second cover part (16b) is provided which engages in the opening (32) in the first cover part (16a) and on which a bearing (40) is formed in which an end (42) of the spindle of the belt reel (14) is supported.

Abstract: In the method for mounting an inflator (12) within a tube (14), especially of a belt tensioner, wherein an end portion (28) of the tube (14) is formed radially inwardly so that a first contact surface (30) directed to the interior of the tube (14) occurs, prior to forming an annular stabilizing disk (34) is arranged between the first contact surface (30) and a second contact surface (32) configured at the inflator (12).

Abstract: A belt tensioner for a safety belt system includes a pinion (16) rotatably mounted in a housing (12), a drive unit (26), and a toothed rack (18) whose toothing (20) is directly engaged or enters into direct engagement with the pinion (16) and which can be driven by means of the drive unit (26). The toothed rack (18) has the shape of a circular arc and moves on a circular path (K) upon activation of the drive unit (26).

Abstract: A belt retractor for a vehicle safety belt comprises a frame, a belt reel rotatably mounted in the frame, a belt reel axle with an external toothing, and a pawl. The belt retractor has a sliding clutch by means of which the pawl can be brought to engage in the external toothing, in order to rotate the belt reel.

Abstract: A device for tensioning a safety belt includes a motor and a traction transmission means having a first end and a second end. The second end of the traction transmission means is coupled to a belt buckle or an end fitting of the safety belt. The motor is constructed as a tensioner drive for an emergency tensioning. The traction transmission is coupled to the motor such that a drive movement of the motor is converted into a longitudinal movement of the traction transmission means.

Abstract: A method of producing a device containing pyrotechnical material comprises the following steps: providing a tubular housing element with a base and metal ducts incorporated in the base, with the housing element and the base being integrally formed of glass and the housing element and the base defining a housing interior with a bottom adjoining the base, and the metal ducts extending through the bottom into the housing interior; applying a metal layer on the bottom by forming a heat-generating element integrally connected with the metal ducts and the bottom; introducing the pyrotechnical material into the housing element; and sealing the housing element by heating and melting off. The device obtainable in this way serves for use in vehicle occupant restraint systems, for instance as an igniter in gas generators and belt tensioners.

Abstract: A belt retractor for a vehicle safety belt comprises a frame, a belt reel rotatably mounted in the frame, a belt reel axle with an external toothing, and a pawl. The belt retractor has a sliding clutch by means of which the pawl can be brought to engage in the external toothing, in order to rotate the belt reel.

Abstract: The present invention relates to a device containing pyrotechnic material, having a housing surrounding the pyrotechnic material, the device being wherein the housing is formed entirely from glass and contains at least one metal duct having a spark gap or a heating wire.

Abstract: In a belt tensioner for vehicular seat belt restraining systems the belt reel (16) of a belt retractor is caused to rotate by a linear drive unit via a step-up gear. The linear drive unit comprises a burstproof cylinder tube (42) closed off at both ends and a hollow piston (44) shiftable therein. Within said hollow piston a pyrotechnical propelling charge (50) with an igniter (52) is accommodated. The belt tensioner is distinguished by its compact configuration, low weight and low-cost production as well as by the linear drive unit being safe to handle.

Abstract: The belt retractor with a belt pretensioner acting on the belt drum (12) has a pyrotechnical piston and cylinder linear drive (22). A rack (32) adapted to be subjected to thrust is connected with the piston (28) of such linear drive (22). The rack (32) is able to be drivingly coupled with the belt drum by the intermediary of a step-up gear wheel transmission (34, 36, 44). After tensioning of the belt, tensions in the safety belt system are limited by plastic deformation of a torsion rod (38), and peak strain values are decreased.The belt retractor is integrated with the belt pretensioner and the energy converter as a compact assembly.

Abstract: A belt retractor for vehicular seat belt restraining systems is equipped with a novel housing structure. The load-bearing part of this housing comprises a shell section (10) surrounding the locking toothings (26a, 28a) on the circumference of the flanges of the belt reel (18) and the end pieces of which are located one on the other and secured together to form a base plate. Under a high load only tensile forces occur substantially in the shell section (10), whereby the shell section (10) surrounding the locking toothings (26a, 28a) acts as a band brake, thereby relieving the load on the locking pawls (22, 24).

Abstract: A belt retractor (10) for vehicular seat belt systems has a rotational belt tensioner drive (12) engaging a belt reel (16). A speed-up planetary gearing (26, 28, 30) is inserted in the power flow between the belt tensioner drive (12) and the belt reel (16). The planetary gearing (26, 28, 30) includes a sun gear (26), planetary gears (28) and a ring gear (30).

Abstract: The invention relates to a belt retractor for vehicular seat belt restraining systems having a spiral retraction spring (16) including a radially inner spring connection on the shaft (12) of the belt reel and a radially outer spring connection on a connecting part (18) firmly connected to the frame. A cylindrical part (141) of a cassette (14) surrounds the retraction spring (16). According to the invention the shaft (12) with the inner spring connection is eccentrically disposed with respect to the cylindrical part (141) of the cassette (14) in such a manner that, when the belt webbing is fully coiled, the outer circumference of the retraction spring (16) is disposed substantially concentrically in the cylindrical part (141) of the cassette (14).

Abstract: The belt retractor with a belt pretensioner acting on the belt drum (12) has a pyrotechnical piston and cylinder linear drive (22). A rack (32) adapted to be subjected to thrust is connected with the piston (28) of such linear drive (22). The rack (32) is able to be drivingly coupled with the belt drum by the intermediary of a step-up gear wheel transmission (34, 36, 44). After tensioning of the belt, tensions in the safety belt system are limited by plastic deformation of a torsion rod (38), and peak strain values are decreased.The belt retractor is integrated with the belt pretensioner and the energy converter as a compact assembly.

Abstract: An actuator for a buckle in a vehicle safety belt system is disclosed. A belt tightener engages on the buckle. In operation, the belt tightener moves the buckle towards the vehicle floor to tighten the webbing. An actuating member is arranged at a stationary location so that relative movement occurs between the buckle and the actuating member when the former is moved towards the vehicle bottom. A force transmitting connection permitting such relative movement is provided between the buckle and the actuating member. This connection can be embodied by a flexible cable or by a rack bar and a tooth member cooperating therewith.

Abstract: A safety belt pretensioner in a restraining system for vehicle occupants includes a reel (54) which is provided with a slot (58) for the passage of the webbing (16) and which comprises a toothing (56) at its outer periphery. The reel (54) is arranged loosely between toothings (42, 44, 52) arranged opposite spaced apart from each other on two opposing spaced apart parallel plates (20d, 40). One of said plates forms a drive plate (40) which is displaceable along the bottom wall (20c) of a frame (20) to which the other plate (20d) is secured as cover plate. A return brake for diminishing energy peaks in the webbing system is formed by a torsion bar (32) on which a gear (34) is mounted via an overrunning clutch (36). The gear (34) is in engagement with a toothing (46) of the drive plate (40). A linear drive engages the drive plate (40) for moving the drive plate (40).

Abstract: A safety belt retractor for motor vehicles comprises a belt spool (2) and a belt pretensioner (30), the pyrotechnical drive (32) of which is activatable via an electrical igniter (11) by means of an inertial sensor (10). The belt spool (2) is coupled to the rotor and the base member of the belt retractor to the stator of a current generator (3 to 7), the terminals of which are connected to a current collector (9) via a switch in the electrical igniter (11).

Abstract: An actuator for a buckle in a vehicle safety belt system is disclosed. A belt tightener engages on the buckle. In operation, the belt tightener moves the buckle towards the vehicle floor to tighten the webbing. An actuating member is arranged at a stationary location so that relative movement occurs between the buckle and the actuating member when the former is moved towards the vehicle bottom. A force transmitting connection permitting such relative movement is provided between the buckle and the actuating member. This connection can be embodied by a flexible cable or by a rack bar and a tooth member cooperating therewith.

Abstract: The locking means for the drive member of a passive safety-belt system includes a pivotally mounted ratchet hook which secures the drive member in its end position corresponding to the belt fastening position. The ratchet hook is arranged on the side of the drive member to which the tensile force occurring at the drive member is directed under accident load. The nose of the ratchet hook dips into a recess at the upper edge of the drive member. Even after high accident stress due to a head-on collision, in which deformation of the loaded parts occurs, the ratchet hook remains reliably in engagement with the drive member.