Kabushiki Kaisha Tokai Rika Denki Seisakusho

Yasunori Hata

Akira Sumiyashiki

Takuhiro Saito

Tatsuhiro Murasaki

Yusuke Watada

Takashi Ono

Makoto Matsuzaki

Wataru Yanagawa

Shinichi Okubo

Takashi Yoshida

Motoki Sugiyama

Koji Hayashi

Naoya Watanabe

Toshikazu Hoshino

In a lift-up buckle device, a slider and a shoe move forward and a buckle is moved to a stowed position. The shoe impacts against a protruding portion at a lower portion of a damper and interferes with a housing via the lower portion of the damper. Thus, the forward movement of the slider and shoe is stopped, while the damper absorbs an impact against the slider and shoe. Therefore, an amount of the impact against the slider and shoe that is absorbed by the damper may be increased by the protruding portion, and the damper may absorb the impact against the slider and shoe effectively.

Seatbelt moving device

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.

Webbing take-up device

In a buckle device, a pressing force, applied from wire ropes to an inside wall face of a wire guide groove of a wire guide, is along an imaginary line passing through a center of a cover plate first hole portion of a cover plate fixing tab of a cover plate and a center of a wire guide hole portion of the wire guide as viewed from the vehicle inside, similarly to a pressing force applied to a first fixing bolt that fixes the cover plate to a support plate, and these pressing forces are both oriented in the same direction. This enables rotation moment to be suppressed from occurring at the cover plate when the wire ropes are pulled toward their length direction leading end side.

Buckle device

A lift-up buckle device has a buckle with which is engaged a tongue through which a webbing, which is applied to a vehicle occupant, is inserted; wires that are made of metal, and whose longitudinal direction one end portions are fixed to the buckle, and that move together with the buckle; a driving portion that is connected to longitudinal direction other end portions of the wires, and that move the wires in a longitudinal direction; a wire guide that is made of metal and holds the wires in a curved state; a guide groove that is formed in the wire guide and in which the wires are inserted; and a resin member that is provided at an interior of the guide groove and abuts the wires.

A reduction in the durability of a coupling member coupled to a buckle is suppressed. A lift-up buckle device includes a buckle that engages with a tongue inserted through webbing worn by an occupant, and wires that each have a portion fixed to the buckle and that are displaced to move the buckle. The lift-up buckle device also includes a wire guide that includes a guide groove that guides the wires, and a soft lower cover that engages with the wire guide and covers the wires. A dimension of an end portion on the buckle side of the guide groove is set so as to increase on progression toward the buckle side.

Load input to an occupant from a buckle is reduced. A lift-up buckle device includes a buckle that engages with a tongue inserted through webbing worn by an occupant. The lift-up buckle device also includes wires that each include a portion configuring a first fixed portion fixed to the buckle side and another portion configuring a supported portion supported by a wire guide, and that move the buckle due to a distance between the fixed portions and the supported portions being changed. Respective locations between the fixed portions and the supported portions of the wires are displaced in a direction intersecting an engaged direction of the tongue when an external force in a direction of the engaged direction of the tongue has been input to the buckle.

A webbing take-up device is provided capable of preventing or suppressing a frame from deforming such that one of leg-plates or a back-plate displaces towards the other. A face on the center of curvature side of a curved portion of a front back plate section configuring the frame and a one width direction edge namely an upper edge of a bar support face each other along the up-low direction. When the front edge sides of leg-plates are displaced to rise due to a webbing being pulled, the one width direction edge of the bar support interferes with a front end of the front back plate section to prevent or suppress the front edge sides of the leg-plates from rising further. Deformation of the frame caused by the front edge sides of the leg-plates to rise can accordingly be prevented or suppressed.

A shaft portion formed at a vertical wall of a sensor housing is formed in a circular column shape, and an abut portion is formed facing a support wall, below the shaft portion. A width dimension of the abut portion is the same as the diameter dimension of the shaft portion as seen in plan view, and the abut portion is formed so as to overlap entirely with the shaft portion as seen from the opposite side of the shaft portion to the abut portion. Foreign objects such as dirt or dust that fall onto the circular column shaped shaft portion therefore readily slide over the shaft portion and fall down from the shaft portion, and foreign objects such as dirt or dust do not stay on the abut portion.

In a reclining sensor of a webbing take-up device, when a case turns together with a seat back that tilts towards the seat rear, rotation of a pulley is restricted by a pressing tab of an operation plate. Accordingly, when relative rotation of the pulley occurs with respect to the case, a wire is pulled out from another end of a tube, turning a sensor housing of an acceleration sensor. The wire pulled out from the other end of the tube is wound up onto a winding portion that is an outer peripheral portion of the pulley that rotates. Since the pulley that pulls the wire merely rotates about its center of rotation, the inside of the case is sufficient as long as rotation range of the pulley is secured, enabling a reduction in size of the case.

An acceleration sensor of a webbing take-up device is provided with a sensor housing in which a spherical body is placed. A rotating shaft is formed at a longitudinal wall of a support wall of the sensor housing, and rotatably supported at a shaft receiving hole formed in a hanger support wall. A position of formation of the rotating shaft is set to be upward relative to a center of gravity of the sensor housing whose state where a sensor lever is installed at the support wall and the spherical body is placed on a curved-surface of a placing portion. Consequently, even without a heavy body being attached at the lower side of the spherical body or the lower side of the sensor housing, the sensor housing rotates responsively when the take-up device main body is tilted. Therefore, the acceleration sensor can be reduced in size.

A length direction base end side of a wire passes through a retaining spring mounting hole formed in a case, and is anchored to an anchor tag that is indirectly retained by a pulley. A spring is provided in the retaining spring mounting hole, and a base end of a tube is retained to the spring through a metal cylinder body. A spring-side step portion of the spring is pressed contact to a mounting portion-side step portion of the retaining spring mounting hole so the spring is retained. When the tube is pulled towards an opening side of the retaining spring mounting hole, the spring moves and the spring-side step portion makes press contact with, and is once again retained, by a different step of the mounting portion-side step portion.

In a pretensioner device, a boot formed into a cylindrical shape covers a circumference of an elongated member, and a tip end of webbing inserted into an insertion hole of a joint anchor through a pair of through-holes formed on an upper end side of the boot is sewn at portions in front of and behind an insertion portion, whereby the boot is engaged with the elongated member. The insertion hole of the joint anchor is exposed to outside of the boot through the pair of through-holes of the boot even in a state in which the elongated member is covered with the boot. Therefore, positional shift of the boot relative to the webbing is prevented, and sewing operation of the webbing may be performed by inserting the tip end of the webbing into the insertion hole of the joint anchor after covering the elongated member with the boot.

Growing community of inventors

Aichi-ken, Japan

Yasunori Hata