JP2000041782A - Seat cushion for automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seat cushion with excellent appearance quality capable of improving cushion performance without increasing the thickness of a seat pad. SOLUTION: This seat cushion is composed of a seat cushion frame 13 of a pan structure and the seat pad composed of an elastic body such as urethane. In this case, the seat cushion frame 13 is press-molded by synthetic resin provided with elastic deformation characteristic, and a slit 15 is passed through and formed at the appropriate part of the bottom part. Then, a wide bank part 16 is formed excluding a rear end part at both side parts of the seat cushion frame 13, a vertical wall part 17 perpendicularly bent downwards is formed at the end edge of a front part and the bank part 16, and a seat slide rail is attached on the inner side of both side parts of the vertical wall part 17.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a seat cushion used for, for example, an automobile seat.

[0002]

2. Description of the Related Art Generally, as shown in FIG. 4, a seat for an automobile has a seat cushion 1 for supporting a passenger's hips,
A seat back 2 that supports the back of an occupant that is reclineably attached to a rear end of the seat cushion 1.
A headrest 3 attached to the upper portion of the seat back 2 and supporting the head of the occupant constitutes a main part.

[0003] In recent years, all-cushion-type automobile seats are increasingly being replaced with all-cushion types instead of those having a spring structure in order to reduce costs.

As shown in FIGS. 4 and 5, a seat pad 1 made of an elastic material such as urethane foam is placed on a seat cushion frame 4 having a pan structure. The seat pad 5 is covered with a seat cover 6 made of fabric or the like. The seat cushion frame 4 is press-formed integrally with a bread mold using a steel plate or the like. Seat slide rails 8 are mounted on the outer sides of both side surfaces of the seat cushion frame 4 via seat slide rail mounting brackets 7. The seat slide rail 8 includes a lower rail 9 fixed to the vehicle floor side and an upper rail 10 slidably mounted on the lower rail 9 in the front-rear direction. A slide rail cover 11 that covers the slide rail 8 is attached to the side of the seat slide mounting bracket 7.

[0005]

In the structure of the seat cushion 1 described above, the seat cushion frame 4 is integrally formed and is hard enough not to bend under the load of the occupant. Because it is determined based on only the lower part of the buttocks, a thickness of at least about 100 mm is necessary to obtain a sitting comfort comparable to that of the spring structure.
This causes a feeling of bottoming out), and the use of an elastic body such as urethane as the seat pad 5 increases, which is a bottleneck in cost reduction. By the way, in order to reduce the amount of elastic material such as urethane as the seat pad 5, the height of the peripheral surface of the seat cushion frame 4 has been suppressed to be low. Appearance is not preferred.

In the structure of the seat cushion 1 described above, the slide rail 8 is entirely covered with the slide cover 1.
1 large slide rail cover 1
1 is required, which leads to an increase in cost.

Therefore, the present invention has been developed in view of the above-mentioned circumstances, and a seat cushion which can improve cushion performance without increasing the thickness of a seed pad and has excellent appearance quality. The purpose is to provide.

[0008]

As a technical means for achieving the above object, the present invention relates to an automobile seat cushion comprising a pan-structured seat cushion frame and a seat pad made of an elastic material such as urethane. ,
The seat cushion frame is formed by press-molding a synthetic resin having elastic deformation characteristics, and a slit is formed through an appropriate portion on the bottom thereof.

Further, according to the present invention, a wide bank portion is formed on both sides of the seat cushion frame except for a rear end portion, and the front cushion portion and the edge of the bank portion are bent downward at right angles. And a seat slide rail is attached to the inside of both sides of the upright wall portion.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A seat cushion according to the present invention will be described below in detail with reference to FIGS.

FIGS. 1 to 3 show an embodiment of the present invention. Parts corresponding to the above-mentioned FIGS. 4 and 5 are denoted by the same reference numerals, and a duplicate description is omitted. I do.

As shown in FIGS. 1 to 3, the seat cushion 12 of the present invention comprises a resin-made seat cushion frame 13 having a bread structure and a seat pad 14 made of an elastic material such as urethane foam as a coating layer. Have been.

The seat cushion frame 13 made of resin is
As shown in FIG. 2, it is press-formed integrally with a bread mold using a synthetic resin, and at this time, a plurality of slits 15 are formed at appropriate locations on the bottom. A wide bank portion 16 is formed on both sides of the seat cushion frame 13 except for the rear end portion, and the front edge and the edge of the bank portion 16 are bent downward at right angles. A wall portion 17 is formed. At the lower part on both sides of the vertical wall part 17, a mounting part 18 formed in a truncated cone shape is formed to bulge inward, and the mounting part 18 is seated on the seat slide rail via the seat slide rail mounting bracket 7. 8 are attached. A slide rail cover 19 is attached to the rear of the bank portion 16 and the vertical wall portion 17 on both sides, and the slide rail cover 19 covers the rear end portion of the seat slide rail 8.

The seat pad 14 also serves as a seat cover. The portion to be placed on the bottom of the seat cushion frame 13 is thick, and the portion to be placed on the bank 16 is thin. It is detachably attached to the seat cushion frame 13 via simple attaching / detaching means (not shown).

According to the seat cushion 12 having the above structure, the seat cushion frame 13 is formed of a synthetic resin, and a plurality of slits 15 are formed through appropriate portions of the bottom thereof so that the seat cushion frame 13 is formed of the synthetic resin. And the elastic deformation by the plurality of slits 15 makes it easy to bend (see a dashed line in FIG. 3), and a bending characteristic equivalent to that of a spring structure can be obtained, thereby improving the cushioning performance.
It is possible to greatly reduce the thickness of the conventional device. As a result, the amount of the elastic body such as urethane used as the seat pad 12 can be reduced, and the cost can be suppressed.

Further, according to the seat cushion 12 having the above-described structure, the mounting portion 18 to the seat slide rail 8 is formed in a lower portion of the vertical wall portion 17 in a truncated cone shape so as to bulge inward. Thereby, the bank portion 16 falls down inward due to the load of the occupant (see the dashed line in FIG. 3), whereby the bank portion 16 wraps around the buttocks of the occupant, thereby improving the holdability.

Further, according to the seat cushion 12 having the above structure, the seat slide rail 8 is attached to the inside of the vertical wall 17 on both sides of the seat cushion frame 13, so that the seat slide rail is formed on the vertical wall 17. 8 can be covered with the slide rail cover 19.
Can be greatly reduced in size, and cost increase can be suppressed.

According to the seat cushion 12 having the above-described structure, the seat cushion frame 13 made of resin is colored in the same material as that of the seat pad 14 so that the cushion thickness can be increased to improve the appearance. Can be. As a result, the peripheral portion of the conventional seat cushion is constituted by the seat pad and the seat cover. However, according to the present invention, only the seat cushion frame 13 is used.

The seat cushion 1 having the above configuration
According to 2, the slit 15 is provided to make the seat cushion frame 13 easily bendable. When the slit 15 is expanded to the full width of the seat cushion frame 13 as shown by a dashed line in FIG. 2. Further, the seat cushion frame 13 is easily bent, so that a softer sitting comfort can be obtained, and the holdability can be further improved.

[0020]

As described above, according to the present invention,
Since the seat cushion frame is made of synthetic resin and slits are formed at a plurality of locations on the bottom, the cushion performance can be improved without increasing the thickness of the seat pad due to the elastic deformation of the synthetic resin and the elastic deformation caused by the slit. Because the seat slide rail is covered with the vertical wall of the seat cushion frame, the slide rail cover can be significantly reduced in size, and the resin seat cushion frame is colored with a material. As a result, the cushion can be made thicker and the appearance quality can be improved.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a cross section of a seat pad according to an embodiment of an automobile seat cushion of the present invention.

FIG. 2 is a perspective view of a seat cushion frame of the automobile seat cushion of the present invention.

FIG. 3 is an explanatory cross-sectional view of an automobile seat cushion according to the present invention.

FIG. 4 is a perspective view showing a cross section of a seat pad showing a conventional automobile seat cushion.

FIG. 5 is an explanatory cross-sectional view of a conventional automobile seat cushion.

[Explanation of symbols]

 Reference Signs List 12 seat cushion 13 seat cushion frame 14 seat pad 15 slit 16 bank 17 vertical wall 18 mounting part 19 slide rail cover

Claims (2)

[Claims] 1. An automobile seat cushion comprising a pan-structured seat cushion frame and a seat pad made of an elastic material such as urethane, wherein the seat cushion frame is press-formed with a synthetic resin having elastic deformation characteristics. An automobile seat cushion, wherein a slit is formed through an appropriate portion of a bottom portion. 2. A wide bank portion is formed on both sides of the seat cushion frame except for a rear end portion,
A vertical wall which is bent downward at right angles to the front part and the edge of the bank part, and a seat slide rail is attached to the inside of both sides of the vertical wall. Item 4. An automobile seat cushion according to item 1.