The invention relates to a belt retractor (5) for a vehicle seat belt system, comprising a frame (10), a belt reel (14) which is rotatably arranged within the frame (10), and a locking system which can lock the belt reel in a webbing-sensitive manner, wherein the locking system includes an inertia pawl (30) which per se co-rotates with the belt reel (14) and is pivotable from a home position in which the belt reel is freely rotatable about a pivot axis (S) to a locking position, characterized in that a means to trigger pivoting of the inertia pawl (30) is provided which is responsive to exceeding a predetermined centrifugal force.

An intelligent retractor having a mode switching lever includes: a spool around which webbing is wound; a flywheel which is provided at one side of the spool and rotates along with the rotation of the spool; a locking unit which fixes the flywheel when a predetermined condition for preventing an extension of the webbing is satisfied; and a mode switching lever which rotates in a state in which the webbing is extended by a predetermined length or greater, and operates the locking unit so that the locking unit fixes the flywheel.

An intelligent retractor having a mode switching lever includes: a spool around which webbing is wound; a flywheel which is provided at one side of the spool and rotates along with the rotation of the spool; a locking unit which fixes the flywheel when a predetermined condition for preventing an extension of the webbing is satisfied; and a mode switching lever which rotates in a state in which the webbing is extended by a predetermined length or greater, and operates the locking unit so that the locking unit fixes the flywheel.

In a webbing take-up device, when a pre-tensioner is actuated and a spool then rotates in a pull-out direction in a state in which an engagement tooth of a restricting pawl has meshed with external teeth of a gear plate, the restricting pawl swings together with the gear plate. This suppresses release of the meshing between the engagement tooth of the restricting pawl and the external teeth of the gear plate. This thereby enables inertial force of a flywheel to be transmitted to the spool, irrespective of the rotational acceleration of the flywheel or the magnitude of a rotation speed of the flywheel.

In a webbing take-up device, when a pre-tensioner is actuated and a spool then rotates in a pull-out direction in a state in which an engagement tooth of a restricting pawl has meshed with external teeth of a gear plate, the restricting pawl swings together with the gear plate. This suppresses release of the meshing between the engagement tooth of the restricting pawl and the external teeth of the gear plate. This thereby enables inertial force of a flywheel to be transmitted to the spool, irrespective of the rotational acceleration of the flywheel or the magnitude of a rotation speed of the flywheel.

An intelligent retractor having a noise removal unit includes: a spool around which webbing is wound; a flywheel which is provided at one side of the spool and rotates along with the rotation of the spool; a locking unit which fixes the flywheel when a predetermined condition for preventing an extension of the webbing is satisfied; and a noise removal unit which rotates along with the rotation of the flywheel when the webbing is retracted, and prevents vibration from being generated in the locking unit.

An intelligent retractor having a noise removal unit includes: a spool around which webbing is wound; a flywheel which is provided at one side of the spool and rotates along with the rotation of the spool; a locking unit which fixes the flywheel when a predetermined condition for preventing an extension of the webbing is satisfied; and a noise removal unit which rotates along with the rotation of the flywheel when the webbing is retracted, and prevents vibration from being generated in the locking unit.

A seat belt retractor for a seat belt device for a vehicle with a belt shaft that is rotatably supported in a belt retractor frame, and a blocking device with a locking catch. A sensor device (2) is provided with a first blocking lever (5) which actuates the locking device based on vehicle deceleration via movement of a first blocking lever (5). A second blocking lever (7) supported on the belt extractor for fixing the first blocking lever (5) when there is a predetermined belt extraction length. A counter gear (3) driven by the belt shaft is provided being formed by an eccentric (27) that drives the belt shaft and a wobble plate (8) having a first toothing (19) that can be driven by eccentric (27) to perform a wobbling movement.

A seat belt retractor for a seat belt device for a vehicle with a belt shaft that is rotatably supported in a belt retractor frame, and a blocking device with a locking catch. A sensor device (2) is provided with a first blocking lever (5) which actuates the locking device based on vehicle deceleration via movement of a first blocking lever (5). A second blocking lever (7) supported on the belt extractor for fixing the first blocking lever (5) when there is a predetermined belt extraction length. A counter gear (3) driven by the belt shaft is provided being formed by an eccentric (27) that drives the belt shaft and a wobble plate (8) having a first toothing (19) that can be driven by eccentric (27) to perform a wobbling movement.

In a vehicle emergency, rotation of a lock base in a pull-out direction opposite to a take-up direction is restricted. A first pinion-configuring portion formed at an outer circumferential portion of the lock base configures one width direction side of a pinion section that is rotated in the take-up direction by a rack that moves due to fluid pressure in a vehicle emergency. A coupling member disposed between the lock base and the torsion shaft is fixed to the lock base and to a torsion shaft. A second pinion-configuring portion that configures a width direction other side of the pinion section is formed alongside the first pinion-configuring portion at an outer circumferential portion of the coupling member.