A seatbelt retractor that includes a locking mechanism to prevent rotation of a spool in an extracting direction, a ratchet gear 7 and a locking gear 30 that integrally rotate with the spool, a clutch 50 that moves a pawl 9 from a rest position to an engaging position with respect to the ratchet gear 7, a clutch biasing member that biases the clutch 50 in a retracting direction and in a extracting direction, and a connecting mechanism to connect the clutch 50 to the locking gear 30. When extraction of the webbing is locked, a direction of biasing to rotate of the clutch 50 is maintained in the extracting direction so that the amount of retraction of the webbing required to release the lock is reduced to achieve quick release of the lock.

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.

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 tensioner (10) for a vehicle safety device is provided with a tubular casing (12) in which a piston (18) is movably supported as well as with a closure member (26) closing the tubular casing (12) on the front face and forming a cable guide (38) for a tensioning cable (28) which may be connected to a belt buckle or an end fitting (34) and in which cable guide the tensioning cable (28) is deflected in arc shape. Further, the tensioner (10) comprises an inflator (24) accommodated in the closure member (26), wherein the tubular casing (12) includes a receiving area (14) for receiving the closure member (26) as well as a fastening portion (16) serving for fastening the tensioner (10) to a vehicle frame.

A seatbelt pretensioner system for use in a seatbelt retractor assembly having a spindle and a frame includes a housing adapted for being mounted to the frame and having an interior cavity, a pretensioner tube having a first tube end in fluid communication with a gas generator and a second tube end in fluid communication with the interior cavity of the housing, a pinion being rotatably mounted in the housing and fixedly coupled to the spindle adapted for taking up seatbelt webbing during pretensioning, and a pretensioner rod disposed inside the pretensioner tube. Further, the pretensioner rod has a proximal end disposed towards the gas generator and a distal end disposed away from the gas generator. In addition, the housing is formed with at least two levels including an inboard portion and an outboard portion to store the pretensioner rod after pretensioning.

A seatbelt pretensioner system for use in a seatbelt retractor assembly having a spindle includes a frame assembly having a frame and an attachment bracket adapted to be interlocked to have an inner space for receiving the spindle, a housing adapted for being mounted to the frame and having an interior cavity, a pretensioner tube having a first tube end in fluid communication with a gas generator and a second tube end in fluid communication with the interior cavity of the housing, a pinion being rotatably mounted in the housing and fixedly coupled to the spindle adapted for taking up seatbelt webbing during pretensioning, and a pretensioner rod disposed inside the pretensioner tube. Further, the pretensioner rod has a proximal end disposed towards the gas generator and a distal end disposed away from the gas generator.

A seatbelt pretensioner system for use in a seatbelt retractor assembly having a spindle includes a frame assembly having a frame and an attachment bracket adapted to be interlocked to have an inner space for receiving the spindle, a housing adapted for being mounted to the frame and having an interior cavity, a pretensioner tube having a first tube end in fluid communication with a gas generator and a second tube end in fluid communication with the interior cavity of the housing, a pinion being rotatably mounted in the housing and fixedly coupled to the spindle adapted for taking up seatbelt webbing during pretensioning, and a pretensioner rod disposed inside the pretensioner tube. Further, the pretensioner rod has a proximal end disposed towards the gas generator and a distal end disposed away from the gas generator.

A webbing take-up controlling device including: a motor that is configured to operate a centrifugal clutch; and a controller that controls a voltage applied to the motor such that, in the case of operating the centrifugal clutch, a first voltage lower than a target voltage to operate the centrifugal clutch is applied to the motor, and then the target voltage is applied to the motor.

A retractor includes a spool, a torsion bar and a torsion tube rotationally fixed to the spool, and a locking member aligned with the torsion bar. The torsion bar and the torsion tube extend coaxially from the spool to respective first ends, and the torsion bar has a key. The locking member is movable from an unlocked position rotationally disengaged with the torsion bar to a locked position wherein the key rotationally fixes the locking member to the first end of the torsion bar. When the locking member is in the unlocked position, the torsion bar may be plastically deformed to limit the load applied by webbing against an occupant. If sufficient force is applied to the webbing, the locking member moves to the locked position in which both torsion bar and the torsion tube are locked together and, in tandem, limit the load applied by the webbing.

A motorized seat belt system includes: a spindle around which webbing is wound; an output gear connected to the spindle through a power transmission shaft; a torsion portion provided on the power transmission shaft or the output gear; a motor which transmits rotational power to the spindle; first and second reduction gears which are connected to an output shaft of the motor and transmit rotational power of the motor to the output gear; a first rotation amount detecting sensor that measures a rotation angle and a rotation direction of the power transmission shaft; a second rotation amount detecting sensor that measures a rotation angle and a rotation direction with respect to a rim portion of the first reduction gear; and a controller which controls output of the motor based on detection signals from the first rotation amount detecting sensor and the second rotation amount detecting sensor.