JP2696377B2 - Manufacturing method of automotive seat - Google Patents

Description

Description: BACKGROUND OF THE INVENTION (Industrial application field) The present invention relates to an automobile seat (seat), in particular, a trim cover, a foam pad covered with the trim cover, and a frame supporting the pad. The present invention relates to a method of manufacturing an automotive seat, comprising a structure, wherein the trim cover is constituted by a single skin whose body and frame are continuous, and has a wadding made of foam on the back surface of the body.

(Conventional technology and its problems) The body of the trim cover and the frame are composed of one continuous skin, and the back side of the body of the trim cover is made of urethane foam to improve the feel when seated. In a vehicle seat provided with wadding made of a slab material, the wadding must be attached to the back side of only the body, which is a part of the skin. Therefore, conventionally, wadding is bonded with an adhesive for each sheet of the skin. Then, after wadding is adhered to the back of the body of the trim cover with an adhesive, the trim cover covers the pad mounted on the frame structure to form a sheet.

The wadding is adhered to the entire surface of the skin by overlapping the roll wound with the wadding wound in the same roll shape, applying the adhesive, and holding the wad in two rolls. When transported, the skin and wadding are integrated, and a trim cover having wadding over the entire surface of the skin can be manufactured automatically by cutting the trim into a predetermined shape of the trim cover. However, in such a method, it is not possible to partially provide wadding to the epidermis,
In order to partially attach the wadding to the epidermis, it was necessary to manually bond the wadding as described above.

Therefore, a first object of the present invention is to improve the workability as compared with the conventional product.

In addition, before putting the trim cover on the pad conventionally,
The body of the trim cover was adhered to the pad by applying an adhesive to the surface of the pad. When applying the adhesive to this pad, the adhesive must be applied only to the surface of the pad corresponding to the body in the trim cover by spraying, etc., and the trim cover must be pressed against the pad to which the adhesive has been applied. Had to be bonded. Therefore, there is a defect that workability is further deteriorated.

Therefore, a second object of the present invention is to improve the attachment between the trim cover and the pad.

(Means for Solving the Problems) In order to achieve the first object described above, the method for manufacturing an automotive seat according to the present invention comprises a heat-sealing film interposed between a skin and wadding in the body of the trim cover. At the same time, the film is sewn together with the wadding to the skin, and a trim cover is sewn. Next, the pad mounted on the frame structure is covered with the trim cover. The body is heated and pressurized, and the wadding is integrally welded to the back of the body to produce the body.

In addition, the method for producing an automotive seat of the present invention for achieving the second object of the present invention includes providing a heat-welding film between the skin and wadding in the body of the trim cover and on the back side of the wadding, The film is sewn together with the wadding together with wadding to sew a bag-shaped trim cover, and then the pad mounted on the frame structure is covered with the trim cover. The body is heated and pressurized, and the wadding is integrally welded to the back surface of the body, and the body of the trim cover is welded to the surface of the pad.

The present invention attaches pads to the frame structure, wraps them with a trim cover, heats and presses the heat-welding film provided on the body of the trim cover, and welds the skin of the body and wadding together. In addition, the trim cover is welded to the pad surface.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

FIG. 1 shows an automobile seat manufactured by the method of the present invention, in which (SC) shows a seat cushion and (SB) shows a seat back, respectively, and the outer surfaces of the seat cushion (SC) and the seat back (SB). The trim cover (1) is composed of a body (11a) (11a ') and a frame (11b) (11).
b ′).. and town (11c) (11c ′). The above body (11a) (11a ') and frame (11b) (11
b ') is formed of a continuous piece of woven fabric or the like, and waddings (12) (12') made of urethane foam slab material are provided on the back side of the body (11a) (11a '). .

2 to 5 show the first invention of the present invention.

Fig. 2 shows the body (11a) of the trim cover (1)
The waist (12) is shown before it is sewn. The body (11a) and the frame (11b) (11b) are made of a single piece of cloth. Wadding (13a) having the same size as (11a) indicates a heat-welding film, and this heat-welding film (13a) is a conventionally well-known member that melts by heating to act as an adhesive. .

Figure 3 shows the heat-welding film (13a) on the body (11a)
And the wadding (12) are sewn together with a sewing machine or the like, and the wadding (12) is attached to the body (11a).

As shown in FIG. 3, after the wadding (12) is attached to the back side of the body (11a) via the heat-welding film (13a),
Connect the town (11c) to the terminal of the picture frame (1b) (1b),
A substantially bag-shaped trim cover is formed. In the figure, (14) and (14) indicate sewing portions.

On the other hand, the foam pad (2) encapsulated in the substantially bag-shaped trim cover is molded into the outer shape of the seat cushion (SC) or the seat back (SB). That is, the upper surface corresponding to the body (11a) of the trim cover (1) is formed in a concave shape.

The frame structure supporting the pad (2) has a conventionally well-known structure in which a spring member (31) is stretched over the frame (3).

After attaching the pads (2) to the frame structures (3) and (31), they are covered with the trim cover sewn into the substantially bag shape. At that time, wadding (12) is putt (2)
At a predetermined position. Thereafter, the terminal (11c) of the trim cover is fixed to a fixing member such as the frame (3) with a hog ring or the like.

Next, a jig (4) having a heating and pressing surface of the same size as the wadding (12) is used to attach the trim cover body (11).
a) is heated and pressurized.

Then, a seat cushion (SC) as shown in FIGS. 4 and 5 is manufactured. That is, when the body (11a) of the trim cover (1) is heated and pressed by the jig (4) having the heating element (41), the heat-welding film (13a) provided on the back side of the body (11a) Melting and wading to body (11a) (1
2) Weld together. In the figure, (13a ') shows a melted heat-welding film.

FIGS. 6 to 8 show a second invention. In this invention, as shown in FIG. 6, a heat welding film (13a ') is provided also on the back side of the wadding (12). A method of manufacturing the seat cushion (SC) by integrally welding the body (11a) of the trim cover (1) to the upper surface of the pad (2) using the welding film (13a ').

That is, first, the heat-welding film (13a), the wadding (12), and the heat-welding film (13b) are stacked on the body (11a) to which the frames (11b) and (11b) are integrally connected. Are sewn together, and the gusset (11c) is sewn to the frame (11b) (11b) to form a bag-like trim cover.

After the pad (2) attached to the frame structure (3) (31) is covered with the trim cover, the terminal of the trim cover is attached to the frame structure (3). After that, the seventh
As shown in FIG. 8 and FIG. 8, the body (11a) of the trim cover (1) is heated and pressed by the jig (4). Then, both the heat welding films (13a) and (13b) are melted, the body (11a) of the trim cover (1) and the wadding (12) are integrally welded, and the wadding (12) is put on the pad (2). The seat cushion (SC) is integrally welded to the upper surface of the vehicle.

In FIG. 8, (13a ') indicates a melted heat-weldable film (13b'), respectively.

(Effect) In the first invention, a heat-weldable film is sewn together with wadding on the back side of the trim cover, and then the trim cover is sewn in a bag shape.
After enclosing the pad on which the frame structure is mounted,
The body of the trim cover is heated and pressurized, and the body and wadding are welded together, so that the workability is improved and the sheet can be manufactured at low cost compared to the case where the wadding is bonded to the body of the trim cover with the adhesive. Can be manufactured.

In the second invention, a trim cover in which a heat-welding film is integrally sewn on the back side of the wadding is used, and the frame structure is attached with the trim cover. After enclosing the pad, the body and the wadding are welded integrally by applying heat and pressure, and at the same time, the wadding is integrally welded to the pad to produce a sheet. Therefore,
The trim cover is fixed to the pad at a predetermined position, and the body of the trim cover is heated and pressurized, so that the body and wadding, wadding and pad are welded at once, and workability is extremely good. .

In addition, there is no need to provide a wading cover on the back side of the wadding unlike the conventional product, so that the cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view of an automobile seat manufactured by the method of the present invention, and FIGS. 2 to 5 show the first invention of the present invention.
FIG. 2 is a partially exploded sectional view of the trim cover, FIG. 3 is a partially sectional view of the trim cover, FIG.
The figure is an enlarged sectional view of the part A in FIG. 4, and FIGS.
FIG. 6 shows a second invention of the present invention, FIG. 6 is a partially enlarged sectional view of a trim cover, FIG. 7 is a sectional view of a manufactured state, and FIG. 8 is an enlarged sectional view of a portion B in FIG. 7, respectively. .

Claims (2)

(57) [Claims] 1. A trim cover, a pad made of foam covered by the trim cover, and a frame structure supporting the pad, and the trim cover is formed of one sheet whose body and frame are continuous. In an automotive seat comprising a skin, and having a wadding made of foam on the back surface of the body, a heat-welding film is interposed between the skin and the wadding in the body of the trim cover, and the film is formed on the skin. A bag-shaped trim cover is sewn together with wadding to sew the trim cover.Then, the pad mounted on the frame structure is covered with the trim cover, and then the body of the trim cover is heated. A method for manufacturing an automobile sheet, wherein the wading is integrally welded to the back surface of the body by applying pressure. 2. A trim cover, a pad made of a foam covered by the trim cover, and a frame structure supporting the pad. The trim cover has a body and a frame continuous with one another. In an automotive seat comprising a skin and having a wadding made of foam on the back surface of the body, a heat-welding film is provided between the skin and the wadding on the body of the trim cover and on the back side of the wading, The film is sewn together with the wadding together with wadding to sew a bag-shaped trim cover, and then the pad attached to the frame structure is covered with the trim cover. The body is heated and pressurized to weld the wadding integrally to the back of the body and to weld the trim cover body to the pad surface. Method of manufacturing a dynamic car seat.