Kabushiki Kaisha Tokai Rika Denki Seisakusho

Koji Muto

Teruhiko Koide

Masayoshi Nojiri

Toshihito Miyagawa

In a webbing-winding device, a tension acting on a webbing is smaller when a pretensioner-mechanism is actuated than when a force-limiter mechanism is actuated, thus, projection dimensions of a first claw and a second claw can be made smaller than projection dimensions of second contact portions. A total of contact areas of first contact portions and the second contact portions with a body portion is larger than a total of contact areas of the first claw and the second claw with the body portion. Accordingly, the first claw and the second claw are caused to insert through an insertion hole from the lower side of a stay to attach. Since the projection dimensions can be made smaller, an amount of deflection of the protector can be made smaller. Therefore, the protector can be held on the stay reliably to allow the protector to be attached to the stay easily.

Webbing winding device

A buckle pretensioner system includes a substantially L-shaped rail for guiding a buckle body of a buckle from a position where the buckle body engages with a tongue plate to a position corresponding to a lumbar region of a vehicle occupant. When a vehicle disposed with the buckle pretensioner system undergoes a sudden deceleration, a piston inside a cylinder is moved in a frontward direction of the vehicle by gas generated by the actuation of a gas generator, a buckle stay is pulled by a wire coupled to the piston, and the buckle stay is moved along the shape of the rail. As a result, the buckle body supported by the buckle stay pivots from the position where the buckle body engages with the tongue plate to a vehicle occupant restraining position of a webbing belt, and then is pulled to the lumbar region-corresponding position.

Buckle pretensioner system

In a webbing take-up device, when the release of a webbing belt is detected from the signal of a buckle switch, a motor starts driving, the webbing belt is taken up, and a computing circuit increases a voltage Eb in accordance with an integrated time after the signal is switched. In this state, a lock current flows due to an output shaft of the motor being stopped, and when the power to the motor is cut off by increasing the lock current, the values of voltages El and Ed respectively corresponding to the integrated time in which the lock current is powered and the integrated time in which the power to the motor is cut off are subtracted from the value of the voltage Eb, and the motor is driven until the computing result reaches a predetermined value.

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Aichi-ken, Japan

Koji Muto