JPH0435194B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a method for manufacturing a trim cover for a seat, which is used to cover the surface of a cushion body when manufacturing seats for furniture or vehicles.

Conventional technology Conventionally, skin material 1, wading material 2, lining material 3
When manufacturing a trim cover having a concave-convex pattern 4 on the surface by integrally joining them together, the three parts are simply overlapped and sewn or welded together (see Fig. 7), or the wading material 2 has a concave pattern 4. A groove 5 is formed, and the skin material 1, which is partially folded to correspond to the concave shape of the groove 5, is aligned and arranged along the surface of the wadding material 2, and these three are sewn or welded at the concave part. etc. (see Figure 8). The trim cover obtained in this way is made with plastic tape 6 or cloth 7 in a separate process.
is attached as a hanging member to the back side of the lining material 3 corresponding to the concave portion of the uneven pattern 5, and by hooking a spring 9 etc. to the resting wire 8 of the hanging member, the cushion body is pulled by the spring 9 etc. (See Figures 9 and 10).

Problems to be Solved by the Invention However, in the case of these trim covers, where the three parts are simply joined together, the wading material 2 swells toward the backing material 3 due to the elongation rate or tensile strength of the skin material 1, and the wading material 2 bulges out to the back side. As a result, it is not possible to maintain large undulations of the uneven pattern 4 presented on the surface side, and furthermore, it is unavoidable that the uneven pattern 4 becomes unclear. Also, groove 5
In the case where the skin material 1 is joined in accordance with the groove shape, it is possible to form an uneven pattern with large undulations. Concave groove 5 in material 2
A gap X is created between the side surface of the skin material 1 and the
There is a drawback that wrinkles are likely to occur due to movement of the Y, such as undulations or double Y (see Figures 11a and 11b). Furthermore, with these trim covers, the hanging members 6 and 7 are attached in a separate process from the manufacturing process of the cover itself, which not only complicates the process, but also requires large seam allowances and large seam allowances because separate hanging members 6 and 7 are attached. This requires a welding margin and makes the part relatively thick, giving the seater a sense of discomfort.

Means for Solving the Problems In the method for manufacturing a seat trim cover according to the present invention, grooves are formed by cutting out the thickness of a wading material, and a skin material and a backing material are integrally joined to the wading material. After that, while making the groove width of the wading material relatively narrow, the skin material is invaginated along the groove surface, and the lining material is allowed to hang down to the back side, and the skin material and lining are placed at a point corresponding to the upper side of the sagging part. A concavo-convex pattern is formed on the front side by joining the sheets with the backing material, and a sheet hanging bag is formed on the back side with the hanging portion of the lining material.

Function When manufacturing a torm cover in this way, it is possible to form an uneven pattern with large undulations by invading the skin material into the grooves of the wading material, and also to force the skin material while narrowing the groove width of the wading material. Since the skin material is indented, there is no bulging etc. on the skin material, and the surface material and the lining material are joined at the part corresponding to the sagging part of the backing material corresponding to the invagination area, so there is an uneven pattern. At the same time as shaping, it becomes possible to continuously form an attached bag using the hanging portion of the lining material.

Embodiments The following description will be made with reference to FIGS. 1 to 6.

This trim cover is formed by integrally joining a skin material 10, a wadding material 11, and a lining material 12, and the skin material 1 is attached to the front side.
A concavo-convex pattern 13 formed by invading the wading material 11 into the thickness of the wading material 11 is provided. Furthermore, a hanging bag 14 formed by hanging a lining material 11 is provided on the back side (see FIG. 1a). The trim cover is placed over the cushion pad 15 of the seat, the resting wire 16 is inserted into the hanging bag 14, the spring 17 is latched, and the lower end is connected to the seat frame, S-shaped spring, etc. to assemble the seat body. (see Figure 1b). In addition, this trim cover is made by cutting out the thickness of the widening material 11 to form a groove 18, and while making the groove 18 relatively narrow, the skin material 10 is inserted into the groove 18 and lined. It can be manufactured by letting the excess part of the material 12 hang down and joining the skin material 10 and the backing material 12 by sewing or welding at a location corresponding to the upper side of the hanging part. When forming the grooves 18 in the wadding material 11, as a preferred embodiment, the lining material 1 is
A groove 18 is provided in advance on the plane side on which 2 is to be laminated,
Further, it is preferable to leave a part of the wall thickness of the wading material 11 (see FIG. 1c). In this case, when the skin material 10 is invaginated into the groove 18, the wading material 1
Since the thick portion left by the groove 18 is pressed against the side surface of the groove 18 and the wading density of this portion can be increased, the uneven pattern 13 presented on the surface side can be formed with larger undulations and the shape retention can be improved. Because it can be done.

Furthermore, to specifically explain this manufacturing process, the skin material 10 wound into a roll, the wading material 1
1. Each constituent material of the backing material 12 is continuously drawn out, and in the middle of the process, a continuous groove 18 in the longitudinal direction is provided in the wading material 11 using a tip saw C. After forming the grooves, adhesive is applied to both sides of the wadding material 11 using a roll coater, or when a urethane slab or the like is used as the wading material, the surface is heated and melted using a frame F to continuously form the skin material 10 and the backing material 12. Laminate (see Figure 2a). When the skin material 10 and the backing material 12 are laminated, both remain flat (see FIG. 1c), and can be rolled up and stored. Next, the sheet material S laminated in three parts is fed out from an uncoiler A or the like, and the skin material 10 and the backing material 12 are joined by applying a quilting machine M or the like. Prior to this joining, the width of the groove 18 of the wading material 11 is brought together using a roll device R, and the skin material 10 in the groove portion is invaginated into the groove, and the excess portion of the lining material 12 is made to hang down (second (see figure b). This roll device R is equipped with tack rolls R ₁ , R _{1 .} . . and pinch rolls R ₂ , R ₂ . Width adjustment guides G are provided on the left and right sides (see Fig. 3). In this roll device R, when forming an uneven pattern 13 having three concave portions, for example, the sheet material S is guided from the left and right by the guide G and is conveyed on the base B while the center of the plurality of tack rolls R ₁ is formed. It is best to first align the width of the object with the one located at , and then act on the ones located on the left and right sides (see Figures 3b and c). By this width adjustment, the skin material 10 gradually sinks into the groove 18 of the wadding material 11, and the surplus portion 14' of the lining material 12 begins to hang downward. A slightly narrower Tatsucrawl is formed at the rear corresponding to each Tatsucrawl R ₁ .
R ₁ are placed respectively, and these narrow rolls
At _R1 , the groove 18 of the wadding material 11 is further narrowed and the skin material 10 is invaginated (see FIGS. 3c and d and FIG. 4). Along with this, an excess portion 14' of the lining material 12 hangs out in a size necessary to form the hanging bag 14, and is formed into a bag shape while being pinched by pinch rolls _R2 (Fig. 3 d). reference). This pinch roll R ₂ is preferably knurled to pull the surplus portion 14' downward, and with this roll, the surplus portion 14' can be folded into a flat bag shape, so subsequent sewing etc. Make it easy to do. After this, when joining the skin material 10 and the lining material 12 with the quilting machine M, each recess can be pressed with the tack feed board B and sewn with the sewing machine needle K (see Fig. 5a). ). The sewing is carried out along a portion corresponding to the upper side of the hanging portion 14' formed by the surplus portion at the bottom of the recess formed by removing the tack. By this sewing, the part corresponding to the upper side of the hanging portion 14' is joined to the skin material 10, so that it has a bag-like shape, and can be used as a hanging bag 14. In addition, for this sewing, it is also possible to guide the hanging portion 14' to the back side of the lining material 12 and sew it overlappingly (see Fig. 5 b, c), or to sew it in a bag-like manner. By sewing the upper sides of the outer skin material 10 to the skin material 10, it is possible to join them with double stitches.

The trim cover manufactured in this manner can be cut to a predetermined size and used to be applied to the cushion pad 15. The trim cover has an uneven pattern 13 and a hanging bag 14 formed at the same time, and can be attached to the cushion pad 15 by inserting a retaining wire or the like into this. In this state, the groove 18 of the wading material 11 is narrowed and the skin material 10 is forcibly recessed into the groove and joined to the backing material 12, so that the uneven pattern 13 has large undulations and is clear. It begins to take on a edging shape.

In the above embodiment, the groove 18 was provided on the side of the wading material 11 on which the backing material 12 is laminated, but instead, a similar trim cover can be manufactured by providing the groove 18 on the side on which the skin material 10 is laminated. You can also do this. (See Figures 6a and b).

Effects of the Invention As described above, according to the method for manufacturing a seat trim cover according to the present invention, not only can a concavo-convex pattern be clearly formed with large undulations, but also a hanging bag can be formed by continuing from the backing material. It is possible to maintain the shape of the uneven pattern for a long period of time without coming off due to unraveling, etc., and because the seam allowance and welding allowance can be reduced, there is no discomfort to the occupants, and furthermore, the manufacturing process of the seat cover is improved. Since a hanging bag can be formed inside, the process can also be simplified.

[Brief explanation of drawings]

FIG. 1a is a partial side sectional view of a trim cover manufactured by the method according to the present invention, and FIG. 1b is an explanatory view of the trim cover attached to a cushion pad.
Figure 1c is an explanatory diagram showing the manufacturing process of one embodiment of the same trim cover, and Figures 2a and b are the steps of laminating the skin material, wading material, and lining material in the same process, and the subsequent skin material. Figures 3a to 4 are explanatory diagrams showing the process of joining with the wading material, and Figures 5a to 4 are explanatory diagrams of the process of invading the skin material into the grooves of the wading material and letting the lining material hang down. Figures 5a to c 6A and 6B are explanatory diagrams showing details of the joining process of the skin material and the lining material, and FIGS. 6a and 6b are explanatory diagrams showing a method for manufacturing a trim cover according to another embodiment, and a part of the trim cover manufactured by the same method. Side sectional view, Figures 7 to 10 and 1
1A and 1B are explanatory diagrams showing a method of manufacturing a trim cover according to a conventional example, a partial side sectional view of a trim cover manufactured by the same method, and an explanatory diagram showing an attachment structure of the trim cover. 10: Skin material, 11: Wading material, 12: Lining material, 13: Uneven pattern, 14: Hanging bag, 1
4': Hanging part, 18: Groove.

Claims (1)

[Claims] 1. After cutting out the thickness of the wading material to form a groove, and integrally joining the skin material and back inner material to the wading material, the groove width of the wading material is made relatively narrow, and the skin material is attached to the groove surface. At the same time, the backing material is made to hang down on the back side, and the skin material and the backing material are joined at a location corresponding to the upper side of the hanging part to form an uneven pattern on the front side, and the backing material is made to hang down on the back side. A method for producing a trim cover for a seat, characterized in that a hanging part of the lining material forms a seat hanging bag.