An energy absorbing device, a seat belt retractor, and a seat belt device, that can change an energy absorption characteristic continuously, and improve durability. A base plate that is connected to a spool and has a corrugated groove annularly formed, a cover plate that is opposingly connected to the base plate and has a corrugated groove synchronized with the corrugated groove of the base plate, a plurality of driving pins with a first end inserted into the corrugated groove of the base plate and a second end inserted into the corrugated groove of the cover plate, a plurality of mass bodies that are arranged in respective intermediate portions of the driving pins, and intermediate plates that are inserted with the driving pins, arranged on both sides of the mass bodies, and connected to a locking base.

A belt retractor having an electrically actuatable locking device comprising a housing with a base plate and an upright first limb, a locking lever mounted pivotably on the upright first limb with a steel plate which is spring-loaded, and an electromagnet arranged in the housing and having a coil with a through opening, a first iron core which is arranged in the through opening, when a voltage is applied to the coil, exerts a magnetic force on the locking lever via the steel plate and actuates the locking lever for triggering a locking or unlocking movement against the force of the spring. The movement of the locking lever is enforced by a first magnetic circuit formed by the first iron core, the upright first limb and the portions of the base plate and of the locking lever between the first iron core and the upright first limb.

A tensioning device for a safety belt component, comprising a gas generator for generating a pressurized gas, a piston that can be driven by the pressurized gas, a tension cable that is connected to the piston and is connectable to a safety belt component to be set into a tensioning movement, a tensioner tube for receiving and guiding the piston, and a guide block that forms a cable guide and in which a receptacle receiving the gas generator and a pressure chamber fluidically connected to the receptacle are formed, wherein the guide block is connected to the tensioner tube and the tension cable runs rectilinearly in a piston movement direction from the tensioner tube through the pressure chamber, and wherein at least one damping element is formed, which absorbs the kinetic energy of the safety belt component in the event of a load-free tensioning movement.

An energy absorbing seat belt retractor used with a seat belt assembly of a motor vehicle. The seat belt retractor includes a reel for winding and unwinding the seat belt and an elongated shaft, with the reel attached to the shaft. In one example, a movable disc is connected to and moves longitudinally along the shaft. At least one of the reel or movable disc includes a friction layer providing a friction surface such that when the movable disc is driven axially toward the real there is frictional engagement between the reel and movable disc that absorbs impact energy on the occupant and limits the load applied to the seat belt.

A device for influencing the force of a seatbelt acting on an occupant of a passenger vehicle during a collision, for example. The device includes a rotary damper with a magnetorheological fluid as a working fluid for damping a rotational movement of a damper shaft of the rotary damper when winding or unwinding the seatbelt. The rotary damper has a displacing device with displacing components which engage into one another and which are wetted by the magnetorheological fluid. By using a paired controller, a magnetic field of a magnetic field source with an electric coil can be controlled and the magnetorheological fluid can be influenced in order to adjust the damping of the rotational movement of the damper shaft.

A serrated portion is formed on an outer peripheral portion of a lock base body of a lock base of a webbing take-up device. Furthermore, a flange portion is formed on the outer peripheral portion of the lock base body. The flange portion is disposed on a vehicle front side with respect to the serrated portion. Triangular grooves of the serrated portion are closed by the flange portion. When the lock base becomes displaced in a vehicle rearward direction and the flange portion comes into abutting contact with a leg plate of a frame, further displacement of the lock base in the vehicle rearward direction is blocked. Due to this, engagement between the serrated portion and ratchet teeth of a ratchet hole in the leg plate can be maintained.

A webbing take-up device includes a spool that is rotated in a pull-out direction by a webbing being pulled out and a lock base that limits pull-out direction rotation of the spool in a vehicle emergency. The webbing take-up device also includes a wire shaped energy absorbing wire that is deformed so as to permit pull-out direction rotation of the spool at or above a force limiter load after the lock base has limited pull-out direction rotation of the spool, a winder section to which one end of the energy absorbing wire is anchored and that is rotated so as to take up the energy absorbing wire, and a wire guide and a lever that press and deform the energy absorbing wire at position offset in the axial direction of the winder section with respect to a location where the energy absorbing wire is anchored to the winder section.

A restraint system for a vehicle, includes a rotatable reel, a flexible tether, a first shaft and a conductor member. The flexible tether has a first end coupled to the reel and a second end. The tether is wound upon the rotatable reel and movable in both a winding direction and an unwinding direction. The first shaft is configured to be operably coupled to the rotatable reel, and includes a plurality of magnetic elements affixed thereto. The conductor member has a hollow interior. At least a portion of the first shaft and at least a portion of the plurality of magnetic elements are disposed within the hollow interior. Movement of the tether in the unwinding direction causes relative movement between the plurality of magnets and the conductor member. Eddy currents within the conduct member generate a retarding force on the first shaft.

A belt reel (14) for a belt retractor (10) has a rotational axis (R) and a reel body (16) that is provided as a reel for a webbing (24) and has a first axial circumferential circle (34). The reel body (16) further includes a radial constriction (32) having a second axial circumferential circle (36), wherein the constriction (32) is arranged centrally on the reel body (16) in the axial direction (A) and wherein the circumference of the second axial circumferential circle (36) amounts to a maximum of 95% of the circumference of the first axial circumferential circle (34). Moreover, a belt retractor (10) comprising such belt reel (14) is described.

A fluid damper for modulating a retaining force of a seat belt is provided. The fluid damper includes an outer cylinder and an inner cylinder. The inner cylinder encloses an inner space. The fluid damper includes a piston shiftable in the inner space. The fluid damper includes a duct. The duct conductively connects a front fluid chamber disposed in front of the piston to a rear fluid chamber disposed behind the piston and/or a reservoir for the damping fluid. The duct includes an outer duct portion and an inner duct portion. The inner cylinder is deflectable from a rest position by a force acting on the piston so that the deflection of the inner cylinder causes an adjustment of an overlap of the outer duct portion and the inner duct portion depending on the magnitude of the force.