Abstract: A pretensioner includes a wire having one end connectable to webbing that restrains an occupant of a vehicle; a piston connected to another end of the wire; a cylinder that slidably accommodates the piston; a housing through which the wire passes and that holds the cylinder; and a gas generator that supplies gas to the piston through a gas chamber within the housing, the gas being for operating the piston in a retraction direction of the wire. The piston includes, at one end of a gas chamber side, a cylindrical portion that extends in an axial direction of the piston, and an initial volume of the gas chamber is adjusted by adjusting a volume of an inner space of the cylindrical portion.

Abstract: 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.

Abstract: 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.

Abstract: A pretensioner and a seat belt apparatus are provided that can diffuse the heat of high-temperature gas and prevent the heat from concentrating locally on a wire. A pretensioner 10 has a housing 12 that allows a wire 11 to run therethrough and a cylinder 14. One end of the wire 11 is connected to a seat belt buckle 9, and the other end of the wire 11 is held by a piston 15. An apertured member 26, that covers at least the gas generator 23 side of a peripheral surface of the wire 11, is provided in the housing 12. A plurality of through-holes 29 are provided in a protecting portion 27 of the apertured member 26.

Abstract: A pretensioner for restraining an occupant with a seat belt by withdrawing a seat belt buckle upon occurrence of an impact on a vehicle. The pretensioner includes a wire. One end portion of the wire is connected to the seat belt buckle and the other end portion of the wire is connected to a piston. The pretensioner further includes a cylinder slidably accommodating the piston and a gas generator supplying gas into the cylinder. The pretentioner further includes a guiding member, having a bent passage portion, that bends the wire toward the direction of the cylinder. On an inner wall surface of the bent passage portion of the guiding member, convex portions are formed in a direction orthogonal to the sliding direction of the wire. The convex portions prevent the wire from being pushed in along the direction of the cylinder.

Abstract: A pretensioner for restraining an occupant with a seat belt by pulling the seat belt when an impact on a vehicle is generated. The pretensioner comprises a retaining ring having a ring to be in contact with an end of a seal member facing a protective member and a plurality of projections to be in press contact with the inner wall of a housing that project radially outwardly from the periphery of the ring, wherein the retaining ring is press fitted into the housing so that the seal member is fixed to the inner wall of the housing by the retaining ring.

Abstract: [Object] A pretensioner and a seat belt apparatus are provided that can diffuse the heat of high-temperature gas and prevent the heat from concentrating locally on a wire. [Solving Means] A pretensioner 10 has a housing 12 that allows a wire 11 to run therethrough and a cylinder 14. One end of the wire 11 is connected to a seat belt buckle 9, and the other end of the wire 11 is held by a piston 15. An apertured member 26, that covers at least the gas generator 23 side of a peripheral surface of the wire 11, is provided in the housing 12. A plurality of through-holes 29 are provided in a protecting portion 27 of the apertured member 26.

Abstract: A seat belt device allows easy connection of a lap anchor fixed to one end of a seat belt relative to a vehicle body or the like even when a seat weight sensor is installed below a vehicle seat. The seat weight sensor and the vehicle seat are fixed to a vehicle body floor. A hitch member is attached to the seat weight sensor via a mounting bracket by a bolt. A lap anchor is locked to a hitch member by an engaging hook of the lap anchor. The hitch member is directly attached to a mounting bracket of the seat weight sensor. The mounting bracket is positioned between a seat rail and the seat weight sensor.

Abstract: A buckle apparatus and a seat belt apparatus are provided capable of suppressing an occurrence of an unevenness of brightness at a time of leading illuminating light flux in an inner part of the reflector. In one form, a reflector having a curved face portion that leads illuminating light flux, which is eradiated from a light source to a light receiving face facing a light source, to an entire face of a light emitting face is provided. Further, a light intensity control device is configured to be connected in series to the light sources, and an optimum light intensity control device is selected while exchanging various light intensity control devices corresponding to the required capability and the specifications.

Abstract: A pretensioner for restraining an occupant with a seat belt by pulling the seat belt when an impact on a vehicle is generated. The pretensioner comprises a retaining ring having a ring to be in contact with an end of a seal member facing a protective member and a plurality of projections to be in press contact with the inner wall of a housing that project radially outwardly from the periphery of the ring, wherein the retaining ring is press fitted into the housing so that the seal member is fixed to the inner wall of the housing by the retaining ring.

Abstract: A seat belt device allowing easy connection of a lap anchor fixed to one end of a seat belt relative to a vehicle body or the like even when a seat weight sensor is installed below a vehicle seat. The seat weight sensor and the vehicle seat are fixed to a vehicle body floor. A hitch member is attached to the seat weight sensor via a mounting bracket by a bolt. A lap anchor is fixed to one end of a seat belt. By locking the lap anchor to the hitch member, the seat belt is connected to the seat weight sensor. In this manner, the seat belt can be easily connected to the vehicle body just by locking the lap anchor to the hitch member.

Abstract: A pretensioner for restraining an occupant with a seat belt by withdrawing a seat belt buckle upon occurrence of an impact on a vehicle. The pretensioner includes a wire. One end portion of the wire is connected to the seat belt buckle and the other end portion of the wire is connected to a piston. The pretensioner further includes a cylinder slidably accommodating the piston and a gas generator supplying gas into the cylinder. The pretentioner further includes a guiding member, having a bent passage portion, that bends the wire toward the direction of the cylinder. On an inner wall surface of the bent passage portion of the guiding member, convex portions are formed in a direction orthogonal to the sliding direction of the wire. The convex portions prevent the wire from being pushed in along the direction of the cylinder.

Abstract: A seat belt device allowing easy connection of a lap anchor fixed to one end of a seat belt relative to a vehicle body or the like even when a seat weight sensor is installed below a vehicle seat. The seat weight sensor and the vehicle seat are fixed to a vehicle body floor. A hitch member is attached to the seat weight sensor via a mounting bracket by a bolt. A lap anchor is fixed to one end of a seat belt. By locking the lap anchor to the hitch member, the seat belt is connected to the seat weight sensor. In this manner, the seat belt can be easily connected to the vehicle body just by locking the lap anchor to the hitch member.

Abstract: A seat belt device includes a seat belt for restraining and protecting an occupant sitting on a vehicle seat; a lap anchor fixed to an end of the seat; seat weight sensor installed below the vehicle seat for measuring a seat load; and a hitch member including two ends and a slide bar therebetween. The seat weight sensor and the vehicle seat are fixed to a vehicle body floor. One end of the hitch member is attached to one of the vehicle body, the vehicle seat fixed to the vehicle body, or the seat weight sensor fixed to the vehicle body. A second end of the hitch member is fixed to the vehicle body. The lap anchor is slidably attached to the slide bar.

Abstract: A buckle apparatus capable of easily securing mounting space of a holding board preventing the buckle apparatus from bulking and realizing easiness for securing internal space of the buckle apparatus is provided. In one form, the buckle apparatus is provided with covers including an opening portion at one side, a buckle portion being provided in the covers and being engaged with a tongue of a seat belt inserted through the opening portion, a slimline LED light source provided in the vicinity of the opening portion, holding boards, provided in the covers, in a standing manner such that at least a light source holding portion for holding an LED light source is arranged in a direction to intersect with an inserting direction of the tongue.

Abstract: A buckle apparatus and a seat belt apparatus are provided that are capable of improving the attachment strength of the reflector. In one form, the buckle apparatus includes an upper cover having an insertion inlet at one side, a buckle portion provided in the upper cover and engaged with a tongue of a seat belt inserted through the insertion inlet, a light source provided in the vicinity of the insertion inlet in the upper cover, a reflector for diffusing and leading illuminating light flux eradiated from the light source, which is provided in inner wall faces, that form the insertion inlet by using the reflector as a mold piece.

Abstract: A seat belt apparatus includes a buckle configured to be attached to a seat frame of a vehicle seat, a seat belt including a first portion configured to be secured to a vehicle body by an anchor and a second portion having a tongue configured to engage the buckle, a first connector connecting the first and second portions of the seat belt, and a second connector disposed on the seat frame. The first and second connectors are configured to engage.

Abstract: A buckle apparatus and a seat belt apparatus are provided that are capable of improving the attachment strength of the reflector. In one form, the buckle apparatus includes an upper cover having an insertion inlet at one side, a buckle portion provided in the upper cover and engaged with a tongue of a seat belt inserted through the insertion inlet, a light source provided in the vicinity of the insertion inlet in the upper cover, a reflector for diffusing and leading illuminating light flux eradiated from the light source, which is provided in inner wall faces, that form the insertion inlet by using the reflector as a mold piece.

Abstract: A buckle apparatus and a seat belt apparatus are provided capable of suppressing an occurrence of an unevenness of brightness at a time of leading illuminating light flux in an inner part of the reflector. In one form, a reflector having a curved face portion that leads illuminating light flux, which is eradiated from a light source to a light receiving face facing a light source, to an entire face of a light emitting face is provided. Further, a light intensity control device is configured to be connected in series to the light sources, and an optimum light intensity control device is selected while exchanging various light intensity control devices corresponding to the required capability and the specifications.

Abstract: A buckle apparatus capable of easily securing mounting space of a holding board preventing the buckle apparatus from bulking and realizing easiness for securing internal space of the buckle apparatus is provided. In one form, the buckle apparatus is provided with covers including an opening portion at one side, a buckle portion being provided in the covers and being engaged with a tongue of a seat belt inserted through the opening portion, a slimline LED light source provided in the vicinity of the opening portion, holding boards, provided in the covers, in a standing manner such that at least a light source holding portion for holding an LED light source is arranged in a direction to intersect with an inserting direction of the tongue.