A webbing pull-in device has a take-up shaft at which a webbing can be pulled in due to the take-up shaft being operated, a first pulley that is rotated at a time of an emergency of a vehicle, and a second pulley that, by being rotated, operates the take-up shaft. Further, the webbing pull-in device has a connecting wire that connects the first pulley and the second pulley, and that, by being taken up onto the first pulley at a time when the first pulley is rotated, transmits rotational force of the first pulley to the second pulley.

A belt pretensioner has a base member. The base member has an axial cavity within. An actuating member is hollow and fits within the axial cavity of the base member. The hollow actuating member telescopically slides within the axial cavity and an initiator fits within the hollow portion of the actuating member. In a critical situation such as a crash, the initiator is triggered and the expanding gasses move the actuating member. The actuating member is connected to seat belt webbing and this movement provides the necessary pretensioning of the seatbelt. In some embodiments, a locking means is used to prevent the belt pretensioner from loosening once triggered. One embodiment is provided for use with a child seat. A transversely mounted belt pretensioner embedment is also disclosed.

A pretensioner and a seat belt device are provided. A pretensioner includes a wire connected to webbing that restrains an occupant, a piston disposed to the wire, a cylinder that slidably accommodates the piston, a gas generator that applies driving force to the piston, and a housing that integrally connects the cylinder and the gas generator. The housing includes an insertion hole that guides the wire, a communication part that is communicated with the cylinder and the insertion hole, and a gas-supply port that supplies gas generated by the gas generator to the communication part. The pretensioner includes a wire guide disposed at a boundary portion of the insertion hole and the communication part, and a holding member that is inserted into the communication part and locked to the gas-supply port, thereby to position the wire guide.

In one embodiment, a cable reel restraint device comprises a cable reel, a retractable cable, first and second springs, first and second attachment interfaces, and a preload selection control. The retractable cable is configured to extend from and retract onto the cable reel. The first spring is configured to exert force for preloading the second spring, and the second spring is configured to exert force for retracting the retractable cable. The first attachment interface is coupled to the cable reel by a first spherical bearing, and the second attachment interface is coupled to the retractable cable by a second spherical bearing. Moreover, the first and second attachment interfaces are configured for being fastened to first and second attachment points. The preload selection control is configured to select a particular preload magnitude and cause the first spring to preload the second spring with a load of the particular preload magnitude.

On a belt tensioner cable guide member (10) comprising a guide duct (42) for a cable of a belt tensioner and comprising a pressure duct (40) for fluid communication between an inflator and a pressure chamber to which a displacement body to be driven and being coupled to the cable is assigned, a first sealing element (44) sealing the guide duct (42) against the cable and especially enclosing the cable in the peripheral direction is provided within the guide duct (42).

A seatbelt retractor for a vehicle interior is disclosed. The retractor may comprise a spool to pretension a belt, a motor, a transmission and a one-way clutch to pretension the belt when the motor drives the spool via the transmission. The one-way clutch may comprise a drive gear rotatable in a first direction to retract the belt and a second direction opposite to the first direction, a driven gear comprising a common axis of rotation with the drive gear, a set of pawls pivotably mounted on the drive gear, and a friction ring frictionally coupled with a stop ring. The drive gear may rotate relative to the friction ring. When the drive gear is in a first position, the set of pawls may be disengaged from the driven gear. When the drive gear is in a second position, the pawls may be engaged with the driven gear.

The invention relates to a belt tensioner (30) for a vehicle occupant restraint system comprising a housing (32), a working chamber (34) into which the compressed gas released in the case of restraint is flowing, a pull rope (24) extending through an opening (36) within the housing (32) and a sealing bush (10) for sealing the working chamber (34) against the opening (36) between the pull rope (24) and the housing (32), with the sealing bush (10) comprising a sleeve (16) and a sealing element (12) and the sealing bush (10) being pressed onto the pull rope (24) by plastic deforming of the outer sleeve (16).

A pretensioner includes a drive wheel provided with a plurality of engaging teeth for rotating a spool, the spool for winding up a webbing for fastening a passenger; and an elongated resin component that transmits power to the drive wheel during an emergency, wherein the plurality of teeth is positioned such that, when one engaging tooth is caused to contact a tip of the elongated resin component in an approximately planer manner, another engaging tooth adjacent to the one engaging tooth in a direction opposite to a rotation direction can contact a side surface of the elongated resin component.

The invention relates to a pressure unit (64) for pressurizing a belt shaft (12) in a seat belt system comprising a screw (66) for fastening the pressure unit (64) to a frame (18) of the seat belt system, the screw (66) including a screw head (68) and a screw shank (70), wherein the pressure unit (64) comprises a fastening portion (72) having a screw hole (74) for inserting the screw shank (70), wherein radial play is provided between the screw hole (74) and the screw shank (70) and the fastening portion (72) on the screw head side includes mounting arms (76) for axially fixing the screw (66) in a pre-assembly position. Moreover, the invention also comprises an end fitting (11) of a seat belt system comprising such pressure unit (64).

A webbing pull-in device has a take-up shaft at which a webbing can be pulled in due to the take-up shaft being operated, a first pulley that is rotated at a time of an emergency of a vehicle, and a second pulley that, by being rotated, operates the take-up shaft. Further, the webbing pull-in device has a connecting wire that connects the first pulley and the second pulley, and that, by being taken up onto the first pulley at a time when the first pulley is rotated, transmits rotational force of the first pulley to the second pulley.