Toyota Boshoku Kabushiki Kaisha

Toyota Jidosha Kabushiki Kaisha

Tokai Chemical Industries, Ltd.

Akihide Ozaki

Hidekazu Kitou

Gen Takahashi

Hiroyuki Nasu

Koki Uemura

A headrest stay is manufactured with a metal round pipe having a predetermined length and a predetermined thickness by performing a boring process on the metal round pipe by a cutting length of 5 mm or more from each of both distal ends of the metal round pipe to form a thin-walled portion that is thinner than the predetermined thickness; forming each of the distal ends of the metal round pipe into an curved chamfered shape having a radius of 5 mm or more by inserting each of the distal ends of the metal round pipe into a cylindrical hole; and bending the metal round pipe to have a shape of the headrest stay.

Method for manufacturing headrest stay

A headrest support having a hollow cylindrical shape and into which a headrest stay is inserted, is inserted into a bracket that has a hollow cylindrical shape and is fixed to a seat back frame. A protrusion, a tip end of which is a pivot center of the headrest support, formed such that a protrusion amount thereof increases in response to insertion of the headrest stay, is provided on an outer peripheral surface of this headrest support.

Headrest support structure

A headrest is mounted to a seat back by inserting a support into a support hole of a holder and inserting a stay of the headrest into to stay hole of the support inserted into the support hole of the holder. A gap occupying part provided in the support moves between an advanced position at which the gap occupying part protrudes from an outer wall of the support and is capable of touching an inner surface of the support hole, and a retracted position at which the gap occupying part is retracted to an inner side of the stay hole from the advanced position. The gap occupying part moves toward the retracted position from the advanced position when the support is inserted into the support hole, and moves toward the advanced position when the stay is inserted into the stay hole.

Headrest mounting structure vehicle seat

A headrest support structure of a conveyance seat includes: an upper frame that is provided with a pair of fitting holes and that constitutes a back frame; and a pair of cylindrical headrest holders, each of which fits in one of the pair of fitting holes to be fixed to the upper frame. A transverse cross-section of a fitting portion of each headrest holder fitting in the corresponding fitting hole has an asymmetric shape about a fitting axis parallel to a fitting direction in which the headrest holder fits in the fitting hole, the transverse cross-section being a cross-section in a direction orthogonal to the fitting axis. The pair of fitting holes is formed such that each headrest holder is allowed to fit in only one of the pair of fitting holes provided at a position set as a fixing position of the headrest holder.

Growing community of inventors

Aichi-ken, Japan

Akihide Ozaki