JPH0546355U - Seat back structure - Google Patents

Abstract

(57) [Summary] [Purpose] To stably support the lumbar region of an occupant in a seat back of an automobile seat. [Structure] Intermediate support portions (3) and (3) are arranged between a waist support portion (1) and side support portions (2) and (2) of a seat back to increase a contact area of an occupant's waist portion. It is a thing.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a seat back (backrest portion) of an automobile seat (seat), and more particularly to a lower structure on a seating surface side of a seat back.

[0002]

[Prior Art]

 FIG. 5 shows a conventional seat back (SB) having a side support part, and (1 ') in the figure is a waist support part having a flat support surface for supporting the waist part (P) of an occupant. Side support parts (2) and (2) are provided on the left and right sides of ′) so as to project forward, and the side support parts (2) hold the side surface of the occupant's waist (P). In addition, inside the side support parts (2) and (2), side frames (41) and (41) are arranged, and the side frames (41) and (41) are attached to a frame-shaped pipe frame (4). A spring member (42) is stretched around the frame (4).

[0003]

[Problems to be solved by the device]

 As described above, the seat back (SB) provided with the side support parts (2) and (2) has a gap (H) (H) between the waist (P) of the occupant and the seating surface of the seat back (SB). ) Occurs. Therefore, the contact area of the seat back (SB) with respect to the occupant's waist (P) is small, and there is a problem that the occupant's waist (P) cannot be stably supported. Therefore, an object of the present invention is to provide a seat back that stably supports the occupant's waist and is comfortable to sit on.

[0004]

[Means for Solving the Problems]

 The present invention for achieving the above object is characterized in that a ridge-shaped intermediate support portion having a small amount of forward projection with respect to the side support portion is provided between the waist support portion and the side support portion. It is a thing.

[0005]

[Action]

 The intermediate support part eliminates the gap between the lumbar support part and the side support part, and the entire lumbar part of the occupant is supported.

[0006]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows an automobile seat provided with a seat back (SB) having the structure of the present invention, and (SC) in the figure shows a seat cushion. Conventional side support parts (2) and (2) are provided on the lower right and left of the seating surface side of the seat back (SB), and the side support parts (2) and (2) and the waist support part (1) are provided. Raised intermediate support parts (3) and (3) are arranged between them.

The intermediate support portions (3) and (3) are configured as shown in FIGS. 2 and 3. That is, the conventional lumbar support portion (1) whose seating surface has a lateral width narrower than that of the flat lumbar support portion (1 ') and the conventional lumbar support portion (1) which protrudes forward with respect to the lumbar support portion (1). The intermediate support portions (3) and (3) are arranged between the side support portions (2) and (2) that are formed so that the amount of protrusion of the intermediate support portions (3) and (3) toward the front is As shown in FIG. 4, when the occupant is seated by forming a mountain shape that is lower than the side support parts (2) (2), the side support parts (2) (2) and the waist support part (1) are There are no gaps between them.

The intermediate support parts (3) and (3) are joined to the skin (11) of the lumbar support part (1) and the skins (21) and (21) of the side support parts (2) and (2). The outer skins (31) (31) and the cushion support body (1) of the lumbar support portion (1) are composed of a cushion body (32) integrally formed in a raised shape on the left and right sides. Then, the cushion members (12), (22), (22), (32) and (32) of the waist support portion (1), the side support portions (2) and (2), and the intermediate support portions (3) and (3) are integrally formed by molding. And is supported by the spring member (42), the frame (4), and the side frames (41) (41).

FIG. 4 shows a state in which the occupant is seated, and the waist (P) of the occupant is supported by the side support parts (2) (2), the intermediate support parts (3) (3), and the waist support part (1). . That is, the entire lower surface of the seat back (SB) contacts the waist (P) of the occupant and supports the waist (P) of the occupant.

[0010]

[Effect of the device]

 According to the present invention, since the intermediate support is provided between the waist support and the side support at the lower part of the seat back, the entire lower part of the seat back contacts and supports the occupant's waist. Therefore, the stability of the occupant's waist with respect to the seat back is good, and the sitting comfort is improved. In addition, the appearance quality of the seat back is improved by the intermediate support portion, and the seat back having high commercial value can be provided.

[Brief description of drawings]

FIG. 1 is a perspective view of the product of the present invention.

FIG. 2 is a sectional view taken along line II-II in FIG.

FIG. 3 is a sectional view taken along line III-III in FIG.

FIG. 4 is a cross-sectional view of the product of the present invention in use.

FIG. 5 is a cross-sectional view of a conventional product.

[Explanation of symbols]

 1 Lumbar support 2, 2 Side support 3, 3 Intermediate support

Claims (1)

[Scope of utility model registration request] 1. A seat back for an automobile seat, comprising: a waist supporting part for supporting a waist of an occupant; and side supports provided on left and right sides of the waist supporting part and projecting forward to support a side surface of the waist of the occupant. A structure of a seat back characterized in that a ridge-shaped intermediate support portion having a small amount of forward projection with respect to the side support portion is disposed between the waist support portion and the side support portion.