A seat belt safety apparatus for a vehicle is provided and implements both of the functions of a retractor and a pretensioner in a structure with a seat belt disposed in a seat. The functions of a retractor and a pretensioner are separated in the seat belt safety apparatus to reduce the installation space.

A linear blocking apparatus has a linear device which is longitudinally displaceable along an axis and is guided in a housing. It is possible to switch back and forth, by means of a connectable or integrated switching device, between two motional states of the linear device. The linear device acts directly or indirectly on a rotary device. The rotary device, in dependence on the motional direction of the linear device, can be set in rotation in diverse rotational directions. A, in particular mechanical, blocking device is present, which is, or can be brought, directly or indirectly into operative connection with the rotary device. The blocking device is actuable by the switching device, whereby it is possible to switch back and forth between a first motional state and a second motional state of the linear device, and hence between the possible rotational directions of the rotary device.

A seat assembly includes a seatback having an interior portion with a seatback frame disposed therein. A retraction mechanism includes a first bracket operably coupled to the seatback frame. A second bracket is operably coupled to the first bracket by an actuator that is operable between at-rest and actuated positions. A tether member includes a body portion that is operably coupled between the first and second brackets of the retraction mechanism for movement therewith. The tether member moves from a deployed position to a retracted position when the actuator moves from the at-rest position to the actuated position. A belt member is operably coupled to the tether member. The belt member is operable between a deployed position, wherein the belt member is disposed in front of the back support portion of the seatback, and a stowed position, wherein the belt member is received in the interior portion of the seatback.

The present invention relates to a tensioning apparatus for a safety belt component and to a method for producing such a tensioning apparatus, comprising a gas generator for generating a pressurized gas, a piston which can be driven by the pressurized gas, a traction cable which is connected to the piston and can be connected to a safety belt component to be set into tensioning motion, and a tensioner tube for receiving and guiding the piston, wherein the gas generator is located in the tensioner tube, the tensioner tube has a cut-out in the jacket thereof between the gas generator and the piston, and a cable deflection is provided, by means of which the traction cable is guided through the cut-out and out of the tensioner tube.

A seat assembly includes a seatback and a seat portion supported by a frame assembly. The seat portion includes a carrier assembly and a displaceable platform pivotally coupled thereto for pivoting movement between a use position and a deployed position. A retraction mechanism includes a first bracket operably coupled to the frame assembly, and a second bracket operably coupled to the displaceable platform. The first and second brackets are operably coupled to one another by an actuator, and the second bracket is operable between first and second positions relative to the first bracket. A belt assembly includes a tether member and a belt member. The tether member is coupled between the first and second brackets, and the belt member is operable between a deployed position outside of the seatback, and a stowed position within an interior of the seatback.

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.

A pre-tensioner for a safety belt of vehicles is provided. The pre-tensioner for a safety belt of a vehicle that is disposed in a side sill of the vehicle and that operates to pull the safety belt by pushing a piston into a tube by a high pressure gas of a gas generator using explosive power of gunpowder that is configured at one side of a bracket in a state in which the piston is connected to the safety belt through a wire within the tube including: internal and external weldnuts that are fixed to each one side of internal and external side surfaces of the side sill, wherein by penetrating the side sill in a vehicle width direction by forming a screw at an external circumference of both end portions of the tube, the both end portions are engaged with the internal and external weldnuts, respectively.

A tensioner device for a seat belt with a tensioner block (1) cable passageway (2) in which there is formed a pressure chamber (3) and a pull cable (4) that can be connected to a compressed-gas powered piston and that can be connected to a seat belt component for providing a tensioning motion. The pull cable extends through the pressure chamber (3) and with a gas generator (5) that is attached to the tensioner block (1), wherein, when triggered, the gas exiting from the gas generator (5) flows through a feed section (6) of the tensioner block (1) into the pressure chamber (3), wherein a guide element (8) is formed in a transition area (7) of the feed section (6) in the pressure chamber (3) that extends via a bar (11) parallel relative to the pull cable (4) and thereby divides the transition area (7) into at least two openings (9).

A seat includes a frame, a pyrotechnic actuator, a webbing guide, and a member. The pyrotechnic actuator includes a housing attached to the frame and a rod linearly movable relative to the housing from a retracted position to an extended position. The rod includes a slot. The webbing guide is attached to the rod. The member is supported by the frame and movable into the slot when the rod is in the extended position.