JPH0612706Y2 - Seat back - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a seat back of an automobile seat, more specifically, a central portion made of a cushion body, and a cushion formed separately from the central portion on the left and right sides of the central portion. In a seat back composed of a body side part, a top part made of a cushion body formed separately from the center part at an upper part of the center part, the center part, the side parts, and a frame structure supporting the top part, The present invention relates to an improvement of the cushion body that constitutes the top.

(Prior Art) This type of seat back has a frame structure (13) in which a supporting member (12) such as an S-shaped spring is stretched around a frame (11) as shown in Figs. ), Side part (14), top part (1
After assembling 5), the central part (16) is arranged in the space formed by these side parts (14) and top part (15), and the central part (1)
6) is fixed to the frame structure (13).

The side portion (14), the top portion (15), and the central portion (16) are all made of foam cushion (such as urethane foam) (15
a), (16a) is covered with epidermis (15b), (16b),
This epidermis (15b), (16b) (15c), (16c) is a frame structure (1
It is fixed by binding to 3) with a hog ring (17).

(Problems to be solved by the invention) In a conventional seat back, a cushion body (15a) constituting a top portion (15) is wound from a rear surface to a front surface of a frame structure (13) to cover the cushion body (15a). Skin (15b) terminal
The top portion (15) is fixed by binding (15c) to the support member (12) of the frame structure (13). Therefore, the cushion body (15a) that constitutes the top portion (15) is the rear surface portion (19) that covers the upper rear surface of the frame structure (13).
And a front part (1) which integrally connects the rear part (19) and the upper part and has a gap between the lower part and the lower part of the rear part (19) and covers the upper front face of the frame structure (13).
8) is formed into an inverted U-shape, and the frame structure (1
The upper part of 3) is covered with a cap shape.

The front part (1) of the cushion body (15a) that constitutes this top part (15)
When the end (15c) of the epidermis (15b) is suspended and bound, since 8) moves until it comes into contact with the rear surface part (19) by the epidermis (15b), the cushion body (15a) of the top part (15) The front surface (18) is an inclined surface, and a step is formed between the front surface (18) and the backrest surface (20) of the central portion (16), which may result in poor seating feeling.

The present invention has been made in view of the above point, and an object of the present invention is to provide a seat back in which the front surface of the cushion body forming the top portion is flat and a step is not formed between the top portion and the central portion.

(Means for Solving the Problems) The seat back according to the present invention is formed by attaching an end of the outer skin forming the top to the lower outer surface of the front part of the cushion forming the top of the conventional product forming the top. The outer surface of the front surface portion is provided with a bulging portion that is flush with the central portion.

(Operation) According to the seat back having the above configuration, when the skin forming the top portion is suspended, the bulging portion formed in the top cushion body moves, and the front surface of the top cushion body becomes flat.

(Embodiment) An embodiment according to the present invention will be described with reference to FIGS. 1 to 4.

In the figure, (6) is a central portion, and this central portion (6) is a foam cushion body (6a) and a skin covering the cushion body (6a).
(6b) and.

The central portion (6) is formed in such a size that it can fit into the space surrounded by the left and right side portions (4), (4) and the top portion (5).

The side parts (4) and the top part (5) have foam cushion bodies (4a), (5a), and this cushion body (4a), like the central part (6).
It is composed of skins (4b) and (5b) covering (5a).

As shown in FIG. 4, the cushion body (5a) constituting the top portion (5) has a rear surface portion (5d) covering the upper back surface of the frame structure (13), and a rear surface portion (5d) and an upper portion. It is integrally molded, and has a gap (a) between it and the rear surface portion (5d), and is foamed in an inverted U shape including a front surface portion (5c) that covers the upper front surface of the frame structure.

The front part (5c) forming the foam cushion body (5a) of the top part (5) has a bulging part (20) formed at the lower part of the front face.

The bulging portion (20) has an inclined shape that rises from the front to the rear, and when the outer skin (5b) is covered and suspended, the bulging portion (20) is pulled to the rear surface portion (5d) and the rear end of the front surface portion (5c) ( 5e) contacts the rear surface portion (5d). The front surface (5c) has a bulge (20) at the rear surface (5d).
The front surface (5f) of the front surface portion (5c) becomes flat.

The frame structure (13) is a frame-shaped frame (11) as in the conventional product.
A support member (12) such as an S-shaped spring is stretched over.

According to the seat back having the above structure, the frame structure
Fix the side part (4) and the top part (5) to (13).

That is, the cushion body (4) of the side part (4) and the top part (5)
Cover the skins (4b) and (5b) on (a) and (5a), and
The skin terminal of (4) is suspended and bonded to the support member (12).

And the cushion body (5a) of the top part (5) is a frame-shaped frame (1
It is wound around 1) and the skin terminal (5g) is bound to the support member (12) of the frame (11).

Since the bulging portion (20) of the front surface portion (5c) of the cushion body (5a) is pulled toward the rear surface portion (5d) by the skin terminal (5g),
The bulging portion (20) moves toward the rear surface portion (5d).

The rear end (5e) of the front surface portion (5c) contacts the rear surface portion (5d), the bulging portion (20) of the front surface portion (5c) moves, and the front surface (5f) of the front surface portion (5c) moves. It becomes flat.

Then, the central portion (6) is arranged in the space formed by the side portions (4) and the top portion (5), and the skin (6
When b) is attached to the support member (12), the side part (4), the top part
(5) and the central portion (6) are fixed to the frame structure (13).

Since the bulging part (20) moves on the top part (5) and the front surface (5f) is flush with the central part (6), a step may be formed between the central part (6) and the backrest surface. Absent.

Although the bulging portion (20) is integrally molded in the above embodiment, the bulging portion (20) may be molded separately and the bulging portion may be fixed to the cushion body.

(Effect of Device) According to this device, the following effects are obtained.

Since the bulging part for preventing deformation is formed below the front surface of the cushion body that constitutes the top part, when suspending the skin,
The bulging portion moves and the front surface of the cushion body becomes flat.

Therefore, no step is formed between the front surface of the top portion and the backrest surface of the central portion.

Therefore, when sitting down, the feeling of sitting is improved.

When the top skin is hung, even if the top skin is hung strongly by the bulging portion of the top, the tension of the skin is strong and the appearance quality is improved.

[Brief description of drawings]

1 is a perspective view of a seat back according to the present invention, FIG. 2 is a partial sectional view taken along line II-II of FIG. 1, and FIG. 3 is a perspective view of a side portion and a top portion of the seat back shown in FIG. 4 and 5 are side views of the cushion body forming the top portion, and FIGS.
FIG. 5 shows a conventional product, FIG. 5 is a perspective view of a seat back, FIG. 6 is a partial sectional view taken along the line VI-VI of FIG. 5, and FIG. 7 is a side portion of the seat back shown in FIG. It is a perspective view of a top part. In the figure, (4) is the side part, (5) is the top part, (6) is the central part, (6a)
Is a cushion body, and (20) is a bulge.

Claims (1)

[Scope of utility model registration request] 1. Side portions formed separately from the central portion on the left and right sides of the central portion, a top portion formed separately from the central portion at an upper portion of the central portion, the central portion, the side portions, and the top portion. The cushion body, which is composed of a supporting frame structure and constitutes the top portion, forms a gap between a rear surface portion that covers an upper back surface of the frame structure, and a rear surface portion that connects the rear surface portion and the upper portion and a lower portion of the rear surface portion. And forming a reverse U-shape composed of a front surface portion covering the upper front surface of the frame structure body, and binding an end of a skin covering the top portion to the frame structure body so that the top portion is formed. In the seat back fixed to, the outer surface of the front part of the cushion body forming the top part is bulging so that the outer surface of the front part is flush with the central part due to the binding of the end of the outer skin forming the top part. Part is provided A seat back featuring.