JPS61257672A - Seat body - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to seat bodies used in vehicles, general furniture, and the like.

Conventional technology A conventional molded seat body is made by heating a skin fixed to the outer periphery of the lower mold between an upper mold and a lower mold having a mold surface of the same shape as the surface of the cushion body, and pressing it with the upper mold. The surface shape of the cushion body is molded, and then the upper mold is lifted upwards, and adhesive is sprayed on both or one of the surface of the molded skin and the surface of the cushion body, such as a skinless mold or slab material. It was caused by cancer.

Problems to be Solved by the Invention The drawbacks of the seat body according to the prior art described above include the following points.

a. For seat bodies made by applying adhesive with a spray gun or brush, it is difficult to apply an even amount of adhesive, and areas with a large amount of adhesive bleed onto the surface and become hard, resulting in poor appearance. This is bad and impedes breathability. Conversely, if the amount applied is too small, the adhesive strength is insufficient and the epidermis often peels off.

b. The cost of the equipment for spraying the adhesive and the cost of sanitary measures are high. Moreover, the process from spraying to adhesion requires a lot of man-hours.

With C0 adhesives, such as urethane-based adhesives, it takes about 45 seconds to complete bonding when the outside temperature is around 18°C, but at around 5°C it takes about 60 seconds, so take measures against low temperatures. It costs even more money.

d. Furthermore, if the adhesive is not adhered within a predetermined time after spraying, the adhesive force will be weak or will disappear.

e. For the conventional machine-sewn trim cover with a three-dimensional machine with an uneven surface using a skin with little stretch, the skin is developed from three-dimensional surfaces and cut out in advance, then sewn three-dimensionally with a sewing machine. However, these operations and further bonding the trim cover to the surface of the same type of urethane mold require skill and a large number of man-hours.

Means for Solving the Problems The present invention provides a seat body that solves the above-mentioned problems, and the seat body of the present invention has the following configuration.

B) A cushion body made of a skinless urethane mold or a cut-molded urethane slab, a skin heated and molded with an upper mold and a lower mold having mold surfaces of the same shape as the surface of the cushion body, and the cushion body and the skin. and a fusing cloth which is interposed between the two and adheres the two by heating and melting.

(b) A cushion body made of a skinless urethane mold or a cut-molded urethane slab, a highly elongated skin that has not been heat-molded in advance, and is interposed between the cushion body and the skin and bonded together by heating and melting. This includes fused fabrics that have a

Effects According to the present invention, it is possible to obtain a seat body with a beautiful appearance, in which the skin and the cushion body made of urethane mold can be easily adhered to each other, and the adhesion is even and uniform.

EXAMPLES Hereinafter, examples of the present invention will be described in detail with reference to the accompanying drawings, including their configurations and the order of processing.

In the first embodiment, in the process shown in FIG. 1, the outer skin 1 is turned over and attached to the outer periphery of a lower mold 6, which has a mold surface on its upper surface that is exactly opposite in shape to the outer shape of the sheet.

In the next step shown in FIG. 2, the skin 1 attached to the lower mold 6 is heated in this way by the heater 7 placed near the upper part of the lower mold 6.

In the step shown in FIG. 3, the skin 1 heated in the above step is compressed and formed into the desired shape of the sheet using an upper mold 8 having the opposite shape to the bottom 6, that is, the same shape as the outer shape of the sheet. .

In the process shown in FIG. 4, the skin 1 formed in this manner remains attached to the lower mold 6, and the fusion cloth 2 is placed on the required portion thereof.

Next, in the step shown in FIG. 5, the upper mold 8 is aligned over the fusion cloth, and the cloth is pressurized and heated.

Then, the fusing cloth 2 is deformed and molded. The heaters 9 inside the lower mold 6 and the upper mold 8A are used to heat and shape the fusing cloth 2. The temperature at which the fusing cloth 2 is heated (but not melted) is lower than the temperature at which the skin 1 is heated and formed by a heater tube.

Finally, in the step shown in FIG. 6, the upper mold 8A (FIG. 5) is removed, and the cushion body 3 made of a skinless urethane mold or a cut-molded urethane slab and the positioning pin 11 are removed.
The cushion body 3 is compressed by aligning the press die 10 and the lower part with respect to the press die 6 through the press die 10, and the fusing cloth 2 is bonded between the outer skin 1 and the cushion body 3 by the heat of the heater 9. It is fused by melting. This completes the sheet. At the melting temperature of fusion fabric 2, the epidermis 1
does not melt. In addition, the code|symbol 6A shows the convex part of the lower mold|type 6.

Since the protrusion here causes the temperature to be lower than that of other parts of the mold, the concave portion on the back side improves heat conduction and prevents the temperature of the convex portion 6A from decreasing.

FIG. 7 is a sectional view of the sheet taken out from the mold after completion of the process shown in FIG. 6 and inverted. The fusing fabric 2 is actually fused to the skin 1 and the cushion body 3. Therefore, the illustrated layer of fusing fabric 2 is thin.

Next, an example of a processing order different from the above processing order will be described.

Although not shown, in the step of FIG. 1, the fusing fabric 2 is attached on top of the outer skin 1, and then the outer skin 1 and the fusing fabric 2 are heated and formed (in FIG. 6, the cushion body 3 is is placed and compression molded using a press die 10, and the heat from the heater 9 melts the fusible fabric 2 to bond the outer skin 1 and the cushion body 3.This is because when the elongation of the outer skin 1 and the fusible fabric 2 is large, Alternatively, there is a case where the surface of the cushion body 30 has few irregularities and the outer skin 1 and the fused cloth 2 can be molded by the pressure applied by the press die 10 of the cushion body 3.

Furthermore, in the above-mentioned processing, I@, the skin 1 has little elongation (so that it can be formed three-dimensionally, it may be expanded and cut into 5 and used by placing it on the lower mold 6). Alternatively, the order of the above figures may be changed depending on the materials and shapes of the skin 1 and the fusing cloth 2, and the shape to be molded.

Next, FIGS. 7 to 9 show the structure of the seat body according to the present invention.

The epidermis l is a single, stretchy epidermis. However, although not shown, two different skins may be used for necessary parts. This uses epidermis with less elongation for areas that do not require elongation, and uses epidermis with greater elongation for areas that require more elongation. Alternatively, like a general trim cover (two or more types or one piece of skin with little elongation may be cut three-dimensionally from the beginning or combined), or a skin of two or more colors It is also good to use

The fusing fabric 2 is in the form of a knitted fabric, a nonwoven fabric, a rope, a paper, a tape, or a film, and in one example when used for a seat body, it is deformed or fused at 80 to 150'C. The fused part does not become hard even after fusion, and the material can be any material that satisfies the required temperature.
For example, there are nylon-based products called Nylon Half or Melt Wave.

If the urethane mold used as the cushion body is a skinless mold, the skin will not peel off from the skin on the surface of the urethane mold after adhesion, unlike in the case of a skinned mold. Even if it is a skinned mold, it is acceptable as long as the necessary bonding parts are skinless or have the skin removed ().

The slab 4 in FIG. 8 is partially placed on the cushion body 3, and has a lower specific gravity than the urethane mold, giving it a soft feel.

The molded slab 5 or urethane mold shown in FIG. 9 has the same purpose as the case shown in FIG. 8, which is to improve riding comfort. The urethane mold may partially be a true gravity mold. Although the above drawings have been explained using urethane molds, slabs, etc., other cushioning materials can also be used. The seat body of the present invention is composed of a skin 1, a fused fabric 2, a cushion body 3 made of urethane mold, a slab 4, and a molded slab or urethane mold 5.

Effect of the invention The seat body according to the present invention has the following effects.

a. All the disadvantages mentioned at the beginning compared to the use of conventional adhesives are eliminated.

b. It is more accurate and easier than spraying because the fusing cloth 2 need not be placed on areas that do not require gluing.

C. When gluing the bag-shaped skin of the front back (front seat back) to a urethane mold, it is difficult to uniformly spray the adhesive material at a predetermined position inside the bag-shaped bag, but the present invention can solve this problem. This can be done accurately and easily by temporarily fixing the fusing cloth to the mold or skin in advance.

d. The thickness, melting point, etc. of the fusion fabric can be selected depending on the material of the fusion fabric, so the required fusion strength or adhesion suitable for the material shape of the skin is better than that of the seat body made by spraying. ing.

Note that the present invention is not limited to seat bodies, but can be applied to interior products such as door pads of vehicle interiors, other parts, and furniture, and has a wide range of uses.

[Brief explanation of drawings]

Figure 1 is a sectional view showing the process of attaching the skin to the outer periphery of the lower mold, Figure 2 is a sectional view showing the next step of heating the skin, Figure 3 is a sectional view showing the process of compression molding the skin, Figure 4 is a cross-sectional view showing the process of placing the fusing cloth, and Figure 5 is compressing the upper mold.
FIG. 6 is a cross-sectional view showing the process of heat-forming, FIG. 6 is a cross-sectional view showing the process of fusing the skin and mold by heating the fusing cloth, and FIGS. Figure 7 is a cross-sectional view of the seat body taken out and inverted after the process in Figure 6 is completed, Figure 8 is a cross-sectional view of the seat body with the slab partially placed on the mold, and Figure 9 is a cross-sectional view of the seat body with the slab partially placed on the mold. FIG. 2 is a sectional view of a seat body composed of a molded slab and a urethane mold. 1. Outer skin, 2. Fusion fabric, 3. Cushion body 46
- Slab, 5 - Molded slab or urethane mold, 6
・・Lower mold, 6A・・Convex part, 7・・Heater, 8.8A@-
Upper mold, 9.-heater, 10.. push mold, 11.. positioning pin. (and 7 others) - Figure 2 Heater Figure 4 Figure 5 Figure 6 Figure 7 Figure 6 Figure 9 Procedural amendment (voluntary) June 3, 1986 Director General of the Patent Office Michibe Uga 1 , Incident Display Patent Application No. 59-493 of 1988 2,
Title of the invention Seat body 3, person making the amendment Relationship to the case Patent applicant name TACHES Co., Ltd. 4, agent 8-1-5 Yurakucho-chome, Chiyoda-ku, Tokyo 100, subject of amendment The description in the "Detailed explanation" column will be amended as follows. (1) Corrected "upper mold 8" in line 17 of the 5th sada to "upper mold 8A". (2) Add the following sentence after "Deira." on page 6, line 16. [In each of the above figures, the upper molds 8, 8A and the lower mold 6 are made with a large number of small holes or made porous, and instead of the heater 9, high temperature steam or gas is passed through to heat the skin l and the fusing layer cloth 2.] Good too. (3) Page 6, line 20, ``Thin'' has been corrected to ``Thin, which melts or breaks when heated, providing breathability between the urethane mold or slab and the skin after treatment.'' (4) On page 7, line 8, "by heat" was corrected to "by heat or the aforementioned high-pressure, high-temperature steam, etc."

Claims (1)

[Scope of Claims] 1. A cushion body made of a skinless urethane mold or a cut-molded urethane slab; a skin heat-molded with an upper mold and a lower mold having mold surfaces of the same shape as the surface of the cushion body; A seat body comprising a cushion, and a fusible fabric interposed between a body and the above-mentioned skin and bonding them together by heating and melting. 2. A cushion body made of a skinless urethane mold or a cut-molded urethane slab, a highly elongated skin that has not been heat-molded in advance, and a cushion body and a skin that are interposed between the cushion body and the skin and bonded together by heating and melting. A seat body comprising a fused fabric.