Autoliv Development Ab

Junichi Nagatomo

Eiji Maemura

Yoshio Fukuhara

Hiroko Yoshikawa

A seatbelt retractor and method of incorporating a spindle into a retractor frame. The seatbelt retractor includes a spindle having a recessed portion in a cylindrical surface for retracting a webbing, and a retractor frame including two flat plate-shaped side walls that are provided in parallel via an interval (A) in order to support the spindle, each of the two side walls being provided with a circular through hole having a diameter (C). An element on a first end of the spindle is contained within a range of a distance (D) from a deepest portion of the recessed portion, and an element on a second end of the spindle is contained within a range of a distance (B) from the deepest portion of the recessed portion. The distance (D) is smaller than the height (C), and the distance (B) is smaller than the interval (A).

Seat belt retractor and method for assembling spindle of seat belt retractor

A clutch includes a clutch housing that rotates with a spindle and has inner teeth; a pair of pawls that can engage with the inner teeth; a gear wheel that is joined to a motor and has a pair of sliding grooves that hold the pawls such that the pawls can move in the sliding grooves between a first position when the motor is not operating, a second position at which the pawls engage with the inner teeth of the clutch housing through operation of the motor, and a third position at which the pawls become positioned on the opposite side to that of the second position across the first position upon operation of the pretensioner; and a return prevention mechanism that prevents the pawls from returning to the first position and the second position after having moved to the third position.

Growing community of inventors

Yokohama, Japan

Junichi Nagatomo