JP3745035B2 - How to apply the epidermis - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for attaching an outer skin to an automobile interior part or the like.
[0002]
[Prior art]
For automobile interior parts such as armrests and safety pads, a method is adopted in which a skin is attached to a box as a base material to produce a product. FIG. 7 shows an outline process of an armrest as an example.
Conventionally, as shown in FIG. 7, the adhesive 3 is applied to a box body surface 91 that has been formed into a predetermined shape by injection molding or the like, and the cut skin 2 is pressure-bonded to the box surface 91, and then the skin edge 21 is attached to the box. It has been rolled up on the back side 92 of the body.
[0003]
[Problems to be solved by the invention]
However, in the corner portion of the box, when the skin edge 21 is simply wound around the back surface side, the wrinkle W having an indefinite shape as shown in FIG. 4 is caused in the corner portion. Since the planar skin 2 is wound around the box 9 that forms a three-dimensional product shape, an excess portion 22 is naturally generated at the end of the skin 2 and appears as wrinkles W. The wrinkle portion is difficult to process and takes man-hours, and this portion is raised, and the armrest AR has a gap S as shown in FIG. 5 when attached to the door trim DT, which makes the appearance worse.
For this reason, it has been considered that the portion of the skin 2 to be wound on the back side of the box body, in particular, the skin 2d of the corner portion is cut by pretreatment as shown in FIG. However, this time, when the epidermis 2 is pressed and pasted, a shift occurs, and the box 9 in the corner portion is exposed, and there is a problem that the epidermis does not hide well.
[0004]
The present invention solves the above-mentioned problems, and does not require a pre-treatment cut of the skin, and only by folding the skin edge to the back side of the box as it is, it is possible to secure a clean state without wrinkles. It aims to provide a method.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the gist of the invention described in claim 1 is a method of attaching a skin covering the surface of the box, wherein the rib is integrally formed on the side wall of the corner portion on the back side. And attaching the epidermis to the surface of the box, and then folding the epidermis edge back to the back side of the box so that the epidermis edge is covered on the rib. It is in.
Here, the “box” refers to a cardboard box or a confectionery box having a shape of an upper surface opening in which a side wall surrounds the bottom plate and a corner portion is formed by the side wall. The corner portion does not need to be a right angle and includes a rounded portion. The box body is not limited to a rectangular body, and includes a box-like portion in which the connecting portion between the bottom plate and the side wall is smoothly continuous.
According to a second aspect of the present invention, there is provided a method for attaching a skin according to the first aspect of the present invention, wherein the rib has a conical shape extending toward the bottom plate of the box.
[0006]
A box body in which a rib as in the invention of claim 1 is integrally formed is used, and after the skin is bonded to the surface of the box body, the skin edge is folded back to the back side, and the skin edge is placed on the rib. If it covers, the surface area of a rib will absorb the surplus part of an outer skin, and a wrinkle will not be caused. Accordingly, the corner portion does not rise due to the surplus skin, and the problem that a gap has occurred due to assembly or the like is solved.
As in the invention of claim 2, when the rib is formed in a conical shape that spreads toward the bottom plate of the box body, the portion where the edge of the skin is wound is located in a deeper position near the bottom plate, so that more excess skin is absorbed. Because it becomes possible, the state of the epidermis is better.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the skin sticking method according to the present invention will be described in detail.
1 to 3 show an embodiment of the method for attaching the skin according to the present invention, which is applied to an armrest. FIG. 1 is a perspective view of a corner portion of the box body, FIG. 2 is a cross-sectional view of an armrest having a skin stuck to the box body, and FIG. 3 is a perspective view of a corner portion of the box body provided with ribs of other forms.
[0008]
Prior to the description of the method of attaching the skin, the box 1 and the skin 2 used for this will be described.
As illustrated in FIG. 2, the box 1 has a cover lid shape with an upper surface opening in which a side wall 12 is provided around the bottom plate 11. A rib 13 is formed integrally with the corner portion 1 c of the box 1.
The rib 13 is integrated with the side wall 12 in a vertically standing state toward the bottom plate 1b of the box. The rib 13 is provided at the corner portion 1c on the back side of the box 1 to suppress wrinkling of the skin 2, but a pyramid shape (including a semiconical shape) as shown in FIG. 1 is more preferable. is there. When the box body 1 is covered with the skin 2 cut in a planar manner, the excess portion 22 at the end can be absorbed more effectively when the box body 1 is covered with a conical shape spreading toward the bottom plate 1b of the box body. It is.
[0009]
The shape of the rib 13 is not limited to a pyramid shape, but may be a truncated pyramid (including a semi-conical truncated cone) as in the right rib 13 of FIG. Moreover, it can also be plate-shaped as shown in FIG.
Further, the apex 131 of the rib 13 can be provided from a position slightly lower than the end surface 121 of the side wall 12 as shown in FIG. 3 without matching the end surface 121 of the side wall 12 as shown in FIG. The lower end 132 of the rib 13 may be up to the middle of the side wall 12 as shown in FIG. 1, but it is more preferable to reach the box bottom 1b as shown in FIG. This is because the box body 1 is usually made of an injection-molded product or the like, so that it is easy to manufacture without an undercut or the like.
[0010]
The skin 2 is covered with the box surface 1a and cut so that it can be wound on the back side of the box and attached by pressure bonding, and is not particularly different from the conventional skin. For the skin 2, one layer of fabric, one piece of fabric and urethane slab laminate, one piece of PVC solid layer and PVC foam layer, one piece of VC solid leather and urethane slab laminate, etc. Is used.
[0011]
The box 1 and the skin 2 are used, and the method of attaching the skin is performed as follows.
First, the adhesive 3 is applied to the front surface 1 a of the box body 1 and the back surface side of the side wall 12. The adhesive 3 is also applied to the ribs 13. If necessary, the adhesive 3 is also applied to the skin side (see FIG. 7).
Next, the box 1 to which the adhesive 3 is applied is set in a compression mold (usually an upper mold) (not shown). The epidermis 2 is also set in the mold (usually the lower mold). The compression mold has the same mold surface as the product shape.
After that, the mold is closed, the box surface 1a and the skin 2 are pressure-bonded by pressure bonding, and both are adhesively bonded.
[0012]
Thereafter, the mold is opened, and after the mold is removed, the skin edge 21 is folded back toward the box back 1b so that the skin edge 21 covers the rib 13 (FIGS. 1 and 2). In this case, the skin edge 21 may be folded back to the back side of the box while the mold is opened, and the skin edge 21 may be covered on the rib 13.
Since the rib 13 is set at the place where the skin edge 21 is folded back to the box back surface side, the portion that becomes the excessive portion 22 of the skin edge 21 naturally covers the rib 13 cleanly. As in the prior art, the corner portion 1c cannot have irregular wrinkles W, and the skin edge 21 can be regulated to a certain shape.
In the case where the product with the skin 2 is covered and the rib 13 is in the way, the rib 13 is slightly lowered to the bottom plate 1b side of the box as shown in FIG. This can be solved by slightly shifting the position.
In this way, a product such as an armrest in which the skin 2 is neatly adhered to the box 1 is completed.
In this embodiment, a side wall 12 is provided around the bottom plate 11. Instead, a bowl-shaped box is used, and the bulging surface side is the box body surface, and the corner portion on the back side is used. The rib may be integrally formed.
[0013]
According to the method for sticking the skin 2 configured as described above, the work process is simple and the skin 2 can be easily attached to the box 1.
Moreover, since the ribs 13 that protrude in accordance with the surplus portions 22 that are likely to become wrinkles W of the skin 2 are absorbed, the appearance is improved. The wrinkle created by the wrinkle W is eliminated, and the installation of such a product eliminates problems such as gaps that have conventionally occurred and produces a high-quality product.
The cut process of the skin edge 21 performed so far is unnecessary, and the defect that the box 1 is exposed at the corner portion 1c does not occur.
[0014]
In addition, in this invention, it is not restricted to what is shown to the said embodiment, According to the objective and a use, it can change variously in the range of this invention. The shape, size, material, and the like of the box 1, the skin 2, and the rib 13 can be appropriately selected depending on the application. In the embodiment, the armrest is taken as an example of the product in which the skin 2 is adhered to the box 1, but the present invention is not limited to this and is applied to various automobile interior parts and the like.
[0015]
【The invention's effect】
As described above, the method of attaching the skin according to the present invention improves the appearance by eliminating wrinkles and the like that have conventionally occurred in the corner portion by using a box body in which ribs are integrally formed. Demonstrates excellent quality improvement, including the ability to resolve problems such as gaps with other products when the product was derived.
[Brief description of the drawings]
FIG. 1 is a perspective view of a corner portion of a box in an embodiment of a method for attaching a skin according to the present invention.
FIG. 2 is a cross-sectional view of an armrest with a skin attached to a box.
FIG. 3 is a perspective view of a corner portion of a box provided with ribs of other forms.
FIG. 4 is an explanatory perspective view of the prior art.
FIG. 5 is an explanatory perspective view of the prior art.
FIG. 6 is an explanatory perspective view of the prior art.
FIG. 7 is a schematic manufacturing process diagram of the prior art.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Box 11 Bottom plate 12 Side wall 13 Rib 1a Box surface 1b Bottom plate 1c Corner part 2 Skin 21 Skin edge

Claims (2)

In the method of attaching the skin covering the surface of the box,
After using a box body with ribs integrally formed on the side wall of the corner portion on the back side, and attaching the skin to the surface of the box, the skin edge is folded back to the box back side, and the skin edge is placed on the rib A method of attaching an epidermis characterized by covering the edge. The method for attaching a skin according to claim 1, wherein the rib has a conical shape spreading toward a bottom plate of the box.

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