Tachi-s Co., Ltd.

Tachi-s., Ltd.

Tetsuo Saito

Masao Ishihara

Atsushi Inoue

A headrest device as applied to a haigh back seat, wherein a headrest body is formed independently of a seat back of the seat, and wherein a first engagement element of the headrest body is engaged with a second engagement element of the seat back, to thereby secure such separate headrest body to the seat back. This arrangement allows improvement in design, coloring and appearance for each of headrest and seat back in the high back seat.

Headrest device

A seat back structure for vehicle seat which includes a separated mat member received into a recessed area in the seat back body which incorporates a male latch member formed by being punched out from a part of a plate frame provided in the seat back so as to project outwardly for latching engagement by a female member attached to a separate mat, and that the female latch member has a width greater than an opening defined in the punched-out part of the plate frame to thereby avoid any direct contact of the male member with the edges of the opening, to thus suppresses the noise between the two latch members. This problem occurs in these types of seats normally as an occupant leans back in the seat and there is a relative movement between the separate mat member and the vehicle seat. The purpose of the invention is to suppress or avoid noise because of relative movement between the two latch members.

Seat back structure in vehicle seat

A rear structure of a seat back for an automotive seat is disclosed. In order to increase the depth dimension of a seat cushion, a rearwardly curved reinforcing rod is welded to the lower portion of an inverted U-shaped frame forming the seat, and the shape holding portions of a cushion member thicker than the turned-back portions thereof covering the upper portion of the frame are applied against the frame with the rod welded thereto. The outer surfaces of the shape holding portions are arranged to form the same plane with the outer surfaces of the turned-back portions, so that the right and left corners of the rear portion of the seat back can be formed square.

Seat back rear structure

A structure of a lumbar support portion of a seat back of an automotive seat is disclosed. In a cushion member formed of foam material or in the portion thereof corresponding to the lumbar support portion, there is provided a block member embedded when the cushion member is formed by a mold. The block member comprises an impreganted portion where a foam solution for forming the cushion member is impregnated when the cushion member is foamed and is hardened afterwards, and a soft non-impregnated portion where the cushion member forming foam solution is not impregnated. A body pressure distribution is obtained in which the pressure in the impregnated portion is the greatest and the remaining pressures existing upwardly and downwardly of the greatest pressure are gradually decreased as they recede from the impregnated portion, resulting in the improved tuning of the seat.

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Akishima, Japan

Tetsuo Saito