Abstract: A belt retractor having a belt shaft having a shaft body, a profile head and a torsion bar, wherein the torsion bar arranged in the shaft body is connected on one end to the shaft body and on a second end to the profile head, and the profile head can be securely attached to the vehicle, and having a belt pretensioner, wherein a pretensioner drive wheel of the belt pretensioner is directly connected in a rotationally fixed manner to the profile head of the belt shaft, and mass bodies can be engaged with the pretensioner drive wheel so as to transmit force to drive the belt shaft in winding direction.

Abstract: A belt retractor having a belt shaft having a shaft body, a profile head and a torsion bar, wherein the torsion bar arranged in the shaft body is connected on one end to the shaft body and on a second end to the profile head, and the profile head can be securely attached to the vehicle, and having a belt pretensioner, wherein a pretensioner drive wheel of the belt pretensioner is directly connected in a rotationally fixed manner to the profile head of the belt shaft, and mass bodies can be engaged with the pretensioner drive wheel so as to transmit force to drive the belt shaft in winding direction.

Abstract: A self-locking seat-belt retractor for a vehicle has a U-shaped seat belt retractor frame (2) with two opposite frame pieces (2a, 2b) each with an opening (2c, 2d), in which a belt shaft (1) is rotatably mounted. A sensor device (3) is configured to actuate a locking device (4) to lock the belt shaft (1) if a predetermined vehicle deceleration is exceeded. A mass (6) is supported in a housing of the sensor device. The sensor device (3) with the housing (9) is held in a support element (7) mounted on the frame piece (2a) of the seat belt retractor frame (2). The support element (7) protrudes into an opening 25 on the frame piece (21) from one side with a portion receiving the sensor device (3). A cover element (11) closes the opening (25) from the other side of the frame piece (2a).

Abstract: A self-locking seat-belt retractor for a vehicle has a U-shaped seat belt retractor frame (2) with two opposite frame pieces (2a, 2b) each with an opening (2c, 2d), in which a belt shaft (1) is rotatably mounted. A sensor device (3) is configured to actuate a locking device (4) to lock the belt shaft (1) if a predetermined vehicle deceleration is exceeded. A mass (6) is supported in a housing of the sensor device. The sensor device (3) with the housing (9) is held in a support element (7) mounted on the frame piece (2a) of the seat belt retractor frame (2). The support element (7) protrudes into an opening 25 on the frame piece (21) from one side with a portion receiving the sensor device (3). A cover element (11) closes the opening (25) from the other side of the frame piece (2a).