A vehicle including a seatbelt retractor having a frame and a spool. The spool has a first end and a second end each rotatably supported by the frame. The spool is elongated along an axis from the first end to the second end. The seatbelt retractor includes a slider slidably engaged with the frame. The slider is slidable from an undeployed position to a deployed position. The seatbelt retractor includes a post supported by the slider and moveable with the slider between the undeployed position and the deployed position. The post is engaged with the spool in the deployed position and disengaged with the spool in the undeployed position. The seatbelt retractor includes a locking device operatively coupled between the spool and the post to engage the spool with the post.

A webbing take-up device includes a spool that takes up a webbing worn by an occupant, and that is rotated in a pull-out direction due to the 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 further includes an energy absorbing wire that undergoes deformation so as to permit pull-out direction rotation of the spool at or above a force limiter load when the lock base has limited pull-out direction rotation of the spool, and a second force limiter mechanism that adjusts the pressing force of the energy absorbing wire according to a remaining take-up amount of the webbing on the spool.

On a belt retractor (10) for a vehicle seat belt comprising a frame (12) provided with plural locking teeth (24), a belt reel (14) which is rotatably supported in the frame (12) and includes a locking tooth system (26) corresponding to the locking teeth (24), and comprising a locking mechanism adapted to transfer the belt reel (14) from a home position in which it is freely rotatable into a locking position in which the locking tooth system (26) of the belt reel (14) engages in the locking teeth (24) of the frame (12), wherein at least one pivoting control lever (28) is provided in which one side of the belt reel (14) is rotatably supported and which is adapted to guide the belt reel (14) from the home position into the locking position, an interlock mechanism is provided which releases the pivoting movement of the control lever (28) not before the latter has been rotated in the unwinding direction (A) of the webbing out of a home position into a release position.

A webbing take-up device is obtained in which the number of rotations of a spool from the start of deformation of a first energy absorption member until the start of deformation of a second energy absorption member can exceed one rotation. In a webbing take-up device, a restricting tab is provided at an open side of the engagement recess portion. Although the leading end of the stopper pawl and the engagement recess portion face each other in the first rotation of the lock ring, a leading end of a stopper pawl is thereby unable to enter inside the engagement recess portion. The restricting tab is restricted from rotating when the leading end of the stopper pawl abuts an abutting portion of the restricting tab. When the lock ring accordingly rotates in a pull-out direction, the restricting tab moves relative to the open side of the engagement recess portion. When the leading end of the stopper pawl and the engagement recess portion face each other in this state, the leading end of the stopper pawl is thereby able to enter the engagement recess portion.

A belt retractor for a vehicle seat belt comprises a rotatably supported belt reel from which webbing can be unwound, a force limiting means which in a force limiting phase permits controlled webbing extension in the webbing extension direction when the belt reel is blocked and a particular force threshold is exceeded, and a change-over device for performing a change-over operation during which it is changed between a low force limitation level and a high force limitation level. In accordance with the invention, the change-over device includes a control means which in response to the identification of an installed child safety seat suppresses a change-over operation from the low force limitation level to the high force limitation level and/or triggers a change-over operation from the high force limitation level to the low force limitation level.

A seat belt retractor comprises a rotatable spool on which seat belt webbing is wound. The spool is rotatable in a webbing withdrawal direction and an opposite webbing retraction direction. The seat belt retractor also comprises a pretensioner actuatable to rotate the spool in the webbing retraction direction and a load-limiting system to limit a load applied to a vehicle occupant by the seat belt webbing. The load-limiting system includes a torsion bar mounted such that the torsion bar is twisted when a load in excess of a predetermined load is applied to the spool in the webbing withdrawal direction by the seat belt webbing. The bad-limiting system also includes a stop assembly actuatable to limit rotation of the spool in the webbing withdrawal direction to a predetermined number of rotations while the torsion bar is being twisted. The stop assembly is actuated upon actuation of the pretensioner.

A force-limiting device (4) for a seat belt device which has at least two parts (5, 11, 15) controlled with a frequency-dependent, defined movement, wherein the parts (5, 11,15) moving relative to one another feature gearings (8, 10, 18, 19) engaging into each other and the frequency-dependent, controlled movement occurs such that at least one of the parts (5, 11, 15) executes a feed movement (V) with respect to the other part (5, 11,15) with an undulating motion (Q) perpendicular to the feed movement (V) in which the gearings (8, 10, 18, 19) alternatingly engage and disengage, by means of which a force limited belt extraction is facilitated. Wherein means are provided with which the required force for movement of the parts (5, 11, 15) toward one another can be automatically increased after a preset belt extraction length.

A restraint system includes a housing, a spool, a disc, a cutter, a plate, and an actuator. The spool is rotatably coupled to the housing. The disc is fixed to the spool. The cutter is moveable along a path from a spaced position away from the disc to a cutting position adjacent the disc. The plate is moveable between an engaged position extending in the path and a disengaged position spaced from the path. The actuator is coupled to the plate.

A force limiting device for a belt retractor is reversible from a higher restraining force level to a lower restraining force level by means of a reversing means during a force limiting phase, wherein the second restraining force level is largely determined by a performance of at least one force limiting element. The reversing means is arranged so that it accomplishes a significant work share upon reversing which is added to the performance of the force limiting element and thus temporarily increases the restraining force of the force limiting device. In this manner undershooting of the characteristic line of the force limiting device upon reversing to the lower restraining force level is compensated.

A seat belt retractor comprises (a) a rotatable spool on which seat belt webbing is wound and (b) a load-limiting system to limit a load applied to a vehicle occupant by the webbing. The load-limiting system includes a flow control orifice through which fluid is forced when a load in excess of a predetermined load is applied to the rotatable spool by the webbing. The cross-sectional flow area of the flow control orifice is adjustable in response to unwinding of webbing from the rotatable spool prior to a vehicle crash event and ceases to be adjustable after the crash event is in progress. The load-limiting system also includes a piston in a cylinder. The piston and cylinder are operatively coupled to the spool such that rotation of the spool causes the piston to move relative to the cylinder, which movement causes fluid to be forced through the flow control orifice.