JP2003250669A - Seat assembly body with springless structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a seat assembly body with a springless structure capable of being simply assembled as the whole seat, reducing weight of the whole seat, and providing satisfactory seating feeling. <P>SOLUTION: A shrink cloth 11 of spun yarn is integrally joined with a foam body 10 as a lining elastic body, a shrink cloth 11a having high density is joined with a central part by lining, and shrink cloths 11b, 11c having relatively low density are joined with remaining parts by lining to assemble the seat assembly body for the springless structure using the foam body 10 as a seating pad of a seat. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mainly relates to a seat assembly having a springless structure suitable for assembling as a seat back or a seat cushion of an automobile seat.

[0002]

2. Description of the Related Art Generally, as an example of an automobile seat back, as shown in FIG. 4, a foam foam back pad 1 is assembled to a seat back frame 2, and the seat back frame 2 is stretched from the backside thereof. It is assembled by being supported by a cushion spring 3 such as a zigzag spring to be provided, and further by covering the back pad 1 with a trim cover (not shown).

In the construction of the seat assembly, it is necessary that the cushion spring 3 has its spring ends fixed to both side portions of the seat back frame 2 and is stretched in the frame of the seat back frame 2. Therefore, not only is it troublesome to assemble the cushion spring 3, but since the cushion spring is made of a metal wire rod, it is possible to reduce the weight of the seat as a whole and to improve the seating feeling. It is an obstacle.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a seat assembly having a springless structure which can be easily assembled as a whole seat, can reduce the weight of the whole seat, and can improve the seating feeling. With the goal.

[0005]

In a seat assembly having a springless structure according to a first aspect of the present invention, a shrink cloth is joined to a foamed foam body as a lining elastic body, and the foamed foam body is used as a seating pad. It is composed by assembling.

In the seat assembly of the springless structure according to the second aspect of the present invention, the shrink cloth having a high density is lined and joined to the central portion, and the shrink cloth having a relatively low density is lined and joined to the remaining portion. The foamed foam body is assembled as a seating pad.

In the seat assembly of the springless structure according to the third aspect of the present invention, the foamed foam body, which is lined and bonded with the shrink cloth by the spun yarn, is assembled as the seating pad.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, referring to FIGS. 1 to 3, the illustrated embodiment is applied to construct a seat back for an automobile as shown in FIG. This seat back has a seat surface portion 10a at the center and both side portions 10a.
It is assembled by providing a foamed foam body 10 of polyurethane or the like, which is formed by bulging with b and 10c as a bank portion, as a seating pad.

The foamed foam body 10 is formed by bonding the shrinkable cloth 11 as a lining elastic body to the back surface. The shrink cloth 11 is formed by pressing a spun yarn such as a polyester fiber single material or a mixed material into a felt shape, and is foam-molded or bonded integrally with the foam foam body 10 as a planar elastic body instead of a zigzag spring or the like. It is joined by doing.

The shrinkable cloth 11 is a portion 1 corresponding to the central bearing surface.
1a is formed to have a high density, and the remaining portions on both sides corresponding to 1
It is preferable to use those formed by forming 1b and 11c with relatively low density. As shown in FIG. 2, this shrinkable cloth 11 is formed by separately molding the central seating surface corresponding portion 11a and both side corresponding portions 11b, and changing the basis weight as shown in FIG. Surface equivalent part 11a and both side equivalent parts 11
It results from integrally forming b.

The foamed foam body 10 is mainly composed of a pipe frame 12a, and is attached to a seat back frame 12 in which side frames 12b and 12c are attached and fixed to both sides of the pipe frame 12a. The foamed foam body 10 includes shrink cloths 11b and 11c having a relatively low density.
Both side parts 10b and 10c lined with
The seat surface portion 10a, which is received and supported from behind by 2b and 12c, and lined with a high-density shrink cloth 10a, may be positioned and assembled in the frame of the pipe frame 12a.

After assembling the foamed foam body 10, the foamed foam body 10 is assembled as a seat back by covering the whole with a trim cover (not shown).
As the trim cover, a bag type with an open lower part is covered, or a spineless type with a backboard is covered to assemble the entire foamed foam body 10.

Since the seat back thus constructed is assembled from the foamed foam body 10 in which the shrinkable cloth 11 is bonded as the lining elastic body, it is necessary to stretch the cushion spring of the metal wire rod in the frame of the seat back frame 12. Not only saves the labor required for the assembly,
The entire seat can be assembled into a lightweight one.

In addition to that, the central seating surface corresponding portion 11a
Is formed into a highly dense material with high elasticity and low elongation,
Since the foamed foam body 10 in which the remaining portions 11b and 11c corresponding to both sides are lined with the shrinkable cloth 11 formed to have a relatively low density capable of imparting shrinkability is provided as a seating pad, the seat material is held by the seated person. The seating feeling can be improved by exhibiting the cushioning property and the cushioning property.

Although the above-described embodiment has been described based on the case of assembling the seat back for the automobile, the same can be applied to the case of assembling the seat cushion.

[0016]

As described above, according to the seat assembly of the springless structure according to the first aspect of the present invention, the shrinkable cloth is joined to the foamed foam body as the lining elastic body, and the foamed foam body is used for sitting. By assembling as a pad,
The cushioning spring of the metal wire can be omitted and the entire seat can be assembled to be lightweight.

According to the seat assembly of the springless structure according to the second aspect of the present invention, the shrink cloth having a high density is lined and joined to the central portion, and the shrink cloth having a relatively low density is used in the remaining portion. By assembling the foamed foam body joined by lining as a seating pad, the seat material can be held and cushioned by the cloth material, and the seating feeling can be improved.

According to the seat assembly of the springless structure according to the third aspect of the present invention, the shrinkable cloth with the spun yarn is lined and joined to form the foamed foam body as a seating pad, so that the shrinkable cloth has an appropriate surface. Since it functions as an elastic body, good seating properties can be exhibited.

[Brief description of drawings]

FIG. 1 is an explanatory view showing a seat back for an automobile as a seat assembly of a springless structure according to the present invention.

FIG. 2 is an explanatory view partially showing a foamed foam body to which a shrink cloth is joined in the seat back of FIG.

FIG. 3 is an explanatory view partially showing a foamed foam body to which a shrinkable cloth having a different form from that of FIG. 2 is joined.

FIG. 4 is an explanatory view showing a seat back for an automobile according to a conventional example.

[Explanation of symbols]

10 Foam foam 10a Seat portion of foamed foam body 10b, 10c Both sides of foamed foam 11 shrink cloth 11a Shrink cloth equivalent to seat surface 11b, 11c Both sides of shrink cloth 12 seat frame

Claims (3)

[Claims] 1. A seat assembly having a springless structure, characterized in that a shrinkable cloth is bonded to a foamed foam body as a backing elastic body, and the foamed foam body is assembled as a seating pad. 2. A foamed foam body in which a shrinkable cloth having a high density is lined and bonded to a central portion, and a shrinkable cloth having a relatively low density is lined and bonded to a remaining portion is assembled as a seating pad. The seat assembly having a springless structure according to claim 1. 3. A seat assembly having a springless structure according to claim 1 or 2, wherein a foamed foam body having a shrink cloth made of spun yarn is lined and joined as a seating pad.