Nsk Corporation

Nsk-warner K.k.

Nippon Seiko Kabushiki Kaisha

Nsk Autoliv Co., Ltd.

Autoliv Development Ab

Chuo Hatsujo Kabushiki Kaisha

Katsuyasu Ono

Masuo Matsuki

Kazuo Yamamoto

Kiyoshi Ogawa

Yukinori Midorikawa

Osamu Kawai

Satoshi Hirase

Kenichi Morizane

Shinichi Yamamuro

Takashi Arima

Yuichi Hamano

Hiroyuki Saito

Osamu Tokugawa

Toshifumi Taguchi

Shinobu Mogi

Tatsuo Tada

Sadanori Ohsumi

Hiroshi Yamada

Haruyuki Ikesue

Katsuo Takiura

Yukio Suzuki

Ryohei Yamauchi

Hitoshi Futaki

Yuichi Takimizu

Masanao Yamazaki

Noritoshi Imade

Goushu Kataoka

Tomosaburo Sato

Yuji Sakata

A seatbelt retractor having a switching device with a gas generator and a switch housing having a gas generator housing portion for accommodating the gas generator and a gas flow path that communicates with the gas generator housing portion so that gas generated by the gas generator passes through the gas flow path. Further, the gas generator housing portion and the gas flow path are formed in the switch housing in a curved shape, and a die-cut hole extending in a direction of the gas flow path on an opposite side of the gas flow path to the gas generator housing portion is blocked from the gas flow path by the gas generator.

Seatbelt retractor

A buckle devicefor a seat belt includes: an anchor platethat can be attached to a vehicle body side; a buckleto which a tongue of the seat belt can be detachably attached; and a woven fabricthat is passed through hole portionsformed respectively in the anchor plateand the buckle, the woven fabricbeing folded back so as to overlap at least triply and being sewn together in the overlapping part. A tip end portion 31of the woven fabrictucked into the inner side contacts the opposing buckle

Buckle device for seat belt and manufacturing method thereof

A seat belt device is provided with a pin for connecting a spindle and a tread head in an initial state. The breaking load of the pin is varied depending on the direction of relative rotation between the tread head and the spindle, such that the pin breaks at a smaller load during operation of a pretensioner. As a result, this allows firmly fixing together the spindle and the lock member during ordinary use without adversely affecting usability, and, upon vehicle collision or the like, the EA load is not affected through breaking of the pin at the smaller load.

Seatbelt device

A seat belt device has a gas generator for generating a high pressure gas when the vehicle is in emergency, a cylinder for conducting the high pressure gas from the gas generator, a piston received movably within the cylinder and pressed and moved by the high pressure gas, and a drive unit for rotating a winding shaft of a seat belt retractor in a direction of removing the slack of a belt, using the movement of the piston, wherein the pretensioner is employed with the energy absorbing mechanism, for reversely rotating the winding shaft if a tension acting on the belt exceeds a predetermined value after removing the slack of the belt.

Seat belt device

Provided is a seatbelt device capable of reliably securing and protecting a passenger. This seatbelt device has a first seatbelt tension increasing unit ( ) for increasing the tension of the seatbelt ( ), and a second seatbelt tension increasing unit ( ) for increasing the tension of the seatbelt ( ). When this seatbelt device judges that the collision of a vehicle is unavoidable, it operates the first seatbelt tension increasing unit ( ) before the collision and operates the second seatbelt tension increasing unit ( ) when it detects the collision of the vehicle. Thereby, the passenger is reliably secured to the seat and his/her safety is ensured.

Provided is a seatbelt device capable of realizing a comfortable seatbelt-wearing environment as well as appropriately securing and protecting a passenger. The seatbelt device is further capable of realizing an immediate escape or rescue of a passenger after a vehicle accident, thereby providing extra safety and a swift escape by protracting the webbing in accordance with the state of the vehicle accident. This seatbelt device is provided with a retractor which uses a motor for retracting and protracting the webbing that secures a passenger to his/her seat, and a controller for rotating the motor and at least retracting the webbing. The controller is capable of altering the protraction mode of the webbing in accordance with the state of the webbing fastened by the passenger.

In a through anchor ( ), a webbing sliding contact surface ( ) is formed by bending in a curved fashion a lower edge of an opening ( ) formed in a metal insert ( ) toward a side. The through anchor ( ) is covered over portions of the metal insert ( ) other than the webbing sliding contact surface ( ) with a coating resin ( ). Accordingly, it is possible to provide a seat belt assembly that can continue to provide good sliding contact between a webbing guide and webbing, with simple construction.

Seat belt assembly and method for producing the through anchor

The present invention provides a seat belt system comprising: a moving element ( ) rotatably received in a housing ( ); a device ( ) for applying a pressurized gas to the moving element ( ) when abrupt deceleration occurs on a vehicle; a tensile member ( ) responsive to movement of the moving element ( ) extruded due to the pressurized gas to generate a rotational torque; and a clutch mechanism ( ) for transmitting the rotational torque generated by the tensile member ( ) to a retractor shaft ( ) to rotate the shaft ( ) in a webbing-winding direction.

Seat belt system

Seatbelt device with locking retractor

It is an object to provide a retractor for a seat belt having a locking means and a shaft which can be twisted and exhibiting satisfactory safety. A retractor 1 for a seat belt according to the present invention having a locking means 100, which is capable of inhibiting rotation of a bobbin 3 around which a webbing 50 is wound in a direction in which the webbing 50 is drawn out in an emergency of a vehicle, a torsion bar 200A is disposed between the bobbin 3 and the locking means 100 and arranged to be twisted to respond to the instance wherein a predetermined load is applied to the locking means 100 so as to rotate the bobbin 3 in the direction in which the webbing 50 is drawn out. The retractor 1 for a seat belt has a rotation restraining mechanism 300 for restraining rotation of the bobbin 3 when the bobbin 3 has been rotated by a predetermined angle in the direction in which the webbing 50 is drawn out to correspond to torsion of the torsion bar 200A.

Retractor for seat belt

A seat belt retractor is provided with a base having a pair of side plates, a bobbin coupled with a webbing, a torsion bar rotatably supported on the side plates of the base, one end of the torsion bar being coupled with the bobbin, and a locking mechanism coupled with another end of the torsion bar, the locking mechanism connecting the another end of the torsion bar with the base in a first state and not connecting in a second state. The torsion bar includes a torsionally deformable portion between two coupling portions thereof, and at least a part of the torsionally deformable portion is located outside beyond the side wall of the base.

Retractor for a seat belt

It is an object to provide a retractor for a seat belt having a locking means and a shaft which can be twisted and exhibiting satisfactory safety. A retractor 1 for a seat belt according to the present invention having a locking means 100, which is capable of inhibiting rotation of a bobbin 3 around which a webbing 50 is wound in a direction in which the webbing 50 is drawn out in an emergency of a vehicle and a torsion bar 200A disposed between the bobbin 3 and the locking means 100 and arranged to be twisted to respond to a fact that a predetermined load is applied to the locking means 100 so as to rotate the bobbin 3 in the direction in which the webbing 50 is drawn out, the retractor 1 for a seat belt having a rotation restraining mechanism 300 for restraining rotation of the bobbin 3 when the bobbin 3 has been rotated by a predetermined angle in the direction in which the webbing 50 is drawn out to correspond to torsion of the torsion bar 200A.

A rack can transmit a rotational torque in a webbing winding and tightening direction to a take-up spindle of a retractor via a pinion gear. In the event of a vehicular collision, this rack is pushed and driven by gas pressure. To rotate at an increased speed an outer clutch ring which can intermittently transmit a torque to the take-up spindle via a clutch mechanism, a speed-increasing gear unit is arranged between the pinion gear and the outer clutch ring.

Seat belt retractor with pretensioner

Accommodated within a trigger casing are a firing pin arranged movably toward a detonator, an inertia body formed of a permanent magnet and defining along a central axis thereof a through-hole through which the pin extends freely, and a cylindrical permanent magnet having an inner diameter greater than an outer diameter of the body. A ring-shaped non-magnetic weight is also accommodated within the casing in such a way that the weight is arranged on a side opposite to the detonator with the body located between them. When a deceleration or acceleration of at least a predetermined value occurs, the body and the weight together move toward the detonator against magnetic repulsion between the magnet and the body. The inertia body then moves toward the detonator through an opening of a cylindrical permanent magnet under magnetic attraction between the magnet and the body, thereby causing the firing pin to move toward the detonator.

Trigger device

A trigger device which, when it is used in a seat belt tightening device or in an air bag device, prevents the malfunction to enhance reliability and also which is simple in structure, is easy to assemble and is inexpensive. The trigger device includes an ignition circuit which, when an opening/closing switch 24 is closed, allows the electricity of a power supply 23 to flow to ignite a gas generator 8, a movable magnet 22 which, when a car is suddenly decelerated, can be inertially moved to a first position to close the opening/closing switch 24 to electrically energize the ignition circuit, and a fixed magnet 21 fixed to a frame 20 of a non-magnetic member so as to be able to hold the movable magnet 22 at a second position, in which the opening/closing switch 24 is opened, by a repelling magnetic force acting between the movable and fixed magnets. And, when a predetermined or greater acceleration is applied to the movable magnet 22, then the movable magnet 22 is moved to the direction of the first position against the repelling magnetic force acting between the fixed and movable magnets so as to be able to electrically energize the ignition circuit.

Growing community of inventors

Kanagawa, Japan

Katsuyasu Ono