KR20020035549A - The structure of a skin layer for the swelling-fluid leakage prevention of an instrument panel - Google Patents

Abstract

PURPOSE: A skin layer structure for preventing foaming solution leakage of an instrument panel is provided to closely contact the skin layer against a core layer for blocking the leakage of a foaming solution or a foaming layer in advance, thereby removing the step of removing the leaked foaming solution or foaming layer. CONSTITUTION: A skin layer(15) structure for preventing foaming solution leakage of an instrument panel includes a foaming layer cover part(16) for covering a foaming layer(13), and a "¥Ø"-shaped coupling end part(17) formed by folding a rim of the foaming layer cover part inwardly and withdrawing the rim outwardly by a predetermined length.

Description

The structure of a skin layer for the swelling-fluid leakage prevention of an instrument panel}

The present invention relates to a structure of a skin layer for preventing the leakage of foam when forming a foam layer of the instrument panel of a vehicle, and more particularly, to improve the texture of the instrument panel, while reducing the impact of the occupant hit the instrument panel to injure When forming a foam layer to prevent the foaming, relates to a skin layer structure for preventing the leakage of the foam liquid of the instrument panel formed to effectively prevent the foam liquid applied between the core layer and the skin layer leak between the core layer and the skin layer will be.

The structure of an instrument panel in which a general foam layer is formed will be briefly described with reference to FIG. 1.

FIG. 1 is a cross-sectional view schematically illustrating a structure of an instrument panel in which a foam layer is formed. As shown in FIG. 1, a core layer 11 formed to support the entire instrument panel 10 is provided at a lowermost layer, and the core layer ( The upper part of the 11 is a skin layer 15 for improving the texture and aesthetics of the instrument panel 10 is joined by a foam layer 13 to be described later, a core between the core layer 11 and the skin layer 15 The foam layer 13 is formed to minimize the injuries generated when the occupant collides with the instrument panel 10 while alleviating the solid texture of the layer 11.

The foam layer 13 is formed between the skin layer 15 and the core layer 11 to mitigate external shocks, and also serves to prevent the skin layer 15 from being separated from the core layer 11. .

As described above, when the foam layer 13 is formed between the core layer 11 and the skin layer 15, the foam panel 13 is formed on the inner surface of the skin layer 15 when the foam layer 13 is formed. The foam layer 12 is formed by applying the foam liquid 12, which may be formed, to a predetermined thickness, and then combining the core layer 11 to match the skin layer 15.

Referring to the accompanying drawings, a conventional structure and a manufacturing method of the instrument panel 10 having the foam layer 13 formed by the above method to mitigate external shocks are described as follows.

Figure 2a is a cross-sectional view showing an embodiment of forming a foam layer on a conventional instrument panel, Figure 2b is a cross-sectional view showing a second embodiment of forming a foam layer on a conventional instrument panel.

As shown in FIG. 2A or 2B, in the related art, the skin layer 15 covering the upper portion of the core layer 11 includes a foam layer cover portion 16 and a foam layer cover portion 16 covering the foam layer 13. The coupling end 17 which is in contact with the core layer 11 is extended out at the edge of the structure.

The method and configuration of forming the foam layer 13 on the instrument panel 10 using the skin layer 10 having the above configuration will be described below.

FIG. 2A illustrates a sealing operation and a foam layer 13 formed by using a separate adhesive pad 18 to extend the coupling end portion 17 extending from the foam layer cover portion 16 covering the portion where the foam layer 13 is to be formed. The core layer 11 and the bonding end 17 are brought into close contact with each other using the adhesive pad 18 between the core layer 11 and the core layer 11.

The adhesive pad 18 may be formed of the same material as the foam layer 13 formed by foaming the foaming liquid 12 so that the foam layer 13 and the adhesive pad 18 may be integrated without a sense of heterogeneity. The adhesive 18 is applied to one surface so as to adhere to the bonding end 17 or the core layer 11 of the skin layer 15.

The foam pad 18 is injected into the inner surface of the foam layer cover portion 16 of the skin layer 15 while the adhesive pad 18 fixes the joint end 17 and the core layer 11 of the skin layer 15 to each other. When the liquid 12 is foamed, the foam layer 13 is formed between the skin layer 15 and the core layer 11.

However, when the foamed liquid 12 is foamed by the above-described method to form the foam layer 13, as shown in the figure, the foamed fluid fluid line 25 is connected to the coupling end 17 and the adhesive pad 18. Concentrated and excessive pressure is transmitted to the coupling end 17 and the adhesive pad 18, the foam liquid 12 leaks to the adhesive pad 18 interposed between the coupling end 17 and the core layer 11 to There was a problem that the completeness is poor, the adhesive pad 18 and the coupling end 17 is pushed to the side, the wrinkles are generated on the coupling end 17 or the shape of the overall skin layer 15 is deformed.

In addition, the foam layer formed in the process of foaming liquid 12 or foaming liquid 12 is foamed between the adhesive pad 18 and the skin layer 15 or the adhesive pad 18 and the core layer 11 due to excessive pressure ( 13) is leaked and the coupling end 18 is dirty, the product is incomplete, and the addition of the process of removing the coupling end 17 clean, waste of manpower and time is generated.

In addition, FIG. 2B illustrates that the foam layer 13 is formed without using a separate adhesive pad 18, and the bonding end 17 extended from the foam layer cover part 16 is brought into close contact with the core layer 11. When the foam layer 13 is formed, a high pressure is applied to the coupling end 17 to prevent leakage of the foaming liquid 12 and the foam layer 13, thereby forming a gap between the coupling end 17 and the core layer 11. Forming the foam layer 13 is prevented from occurring.

However, the above method requires excessive pressure on the coupling end 17 so as to withstand the pressure generated by the concentration of the foam fluid fluid 25 into the coupling end 17 when the foam layer is formed. ) Is excessively compressed to the core layer 11 is coupled or there is a problem that the shape of the coupling end 17 is deformed, and if the pressure applied to the coupling end 17 is not sufficient, the coupling end 17 and the core layer 11 The gap between the) caused a problem that the foam layer 13 and the foaming liquid 12 is leaked.

As described above, the leakage of the foaming liquid 12 and the foam layer 13 generated when the foam layer 13 is formed and the deformation of the shape of the skin layer 15 are not prevented. A separate process for removing the foam liquid 12 or the foam layer 13 leaking to the end portion 17 is required, resulting in a closed end resulting in a decrease in productivity. However, a separate means for overcoming this is not provided. .

The present invention is provided to solve the above conventional problems, the technical problem to be achieved by the present invention, when forming a foam layer on the instrument panel, the skin to prevent the leakage of the foam solution between the skin layer and the foam layer in advance Formation of layers can improve the completeness of the product, and prevent the leakage of the foam in advance, thereby reducing the process of removing the leaked foam and the waste of materials, thereby increasing the productivity of the product. It is to save cost.

To this end, the present invention, the core layer formed to support the entire instrument panel and the skin layer to cover the top of the core layer to improve the texture and aesthetics of the instrument panel and formed between the core layer and the skin layer to the external impact In the instrument panel made of absorbing foam layer, wherein the skin layer is formed of a foam layer cover portion covering the foam layer, and the Ω-shaped coupling end that is bent inward to the outside after bending the edge of the foam layer cover portion inward It features.

1 is a cross-sectional view schematically showing the structure of an instrument panel on which a foam layer is formed.

Figure 2a is a cross-sectional view showing an embodiment of forming a foam layer on a conventional instrument panel.

Figure 2b is a cross-sectional view showing a second embodiment of forming a foam layer on a conventional instrument panel.

Figure 3 is a perspective view showing the shape of the skin layer according to the present invention.

4a and 4b is a view showing the manufacturing process of the instrument panel using the skin layer according to the present invention.

5 is a view showing the distribution of the foam fluid diagram generated when producing the instrument panel using the skin layer according to the present invention.

<Description of the symbols for the main parts of the drawings>

10 instrument panel 11: core layer

12 foaming liquid 13 foam layer

15: skin layer 16: foam layer cover portion

17: coupling end 18: adhesive pad

20: upper mold 21: lower mold

25: foam fluid diagram

Hereinafter, the configuration of the present invention will be described in detail with reference to the accompanying drawings.

Figure 3 is a perspective view showing the shape of the skin layer according to the present invention, Figures 4a and 4b is a view showing the manufacturing process of the instrument panel using the skin layer according to the present invention, Figure 5 is a skin layer according to the present invention It is a figure which shows the distribution of the foam fluid line diagram which arises when manufacturing the instrument panel used.

As shown in FIGS. 3 to 5, the present invention covers a core layer 11 formed to support the entire instrument panel 10 and an upper portion of the core layer 11 to provide a texture and aesthetics of the instrument panel 10. And a foam layer 13 formed between the skin layer 15 and the core layer 11 and the skin layer 15 to improve external shock absorption, and the skin layer 15 is a foam layer 13. The foam layer cover portion 16 to cover the cover, and the Ω-shaped coupling end portion 17, which is bent inward to the outside of the foam layer cover portion 16 and then pulled outward to the outside, completes the overall configuration.

In the above, when the core layer 11 is in close contact with the core layer 11, it is important to form such that the core layer 11 can be compressed while being folded at a predetermined interval inside the foam layer cover part 16 due to the compression of the core layer 11. .

Looking at the operation of the present invention configured as described above are as follows.

First, in order to form the foam layer 13, the skin layer 15 and the core layer 11 are placed in the lower mold 21 and the upper mold 20, respectively, and then the foam layer cover portion 16 of the skin layer 15 is formed. ) Foaming liquid 12 for forming the foam layer 13 is injected into the inner side.

When the skin layer 15 and the core layer 11 are placed as described above, as shown in FIG. 4A, the coupling end 17 of the skin layer 15 does not completely adhere to the lower mold 21, and a portion thereof is semi-circular. As a result, a predetermined interval flows into the foam layer cover portion 16 and is located in a excited state.

When the core layer 11 and the skin layer 15 are positioned in the above state, as shown in FIG. 4B, the upper mold 20 having the core layer 11 seated thereon is the lower mold 21. The foam layer 12 is foamed by lowering to the lower side located to form a foam layer 13.

When the core layer 11 is in close contact with the skin layer 15, the semi-circular coupling end portion 17 is not pushed outward and is crimped while being folded at a predetermined interval without forming wrinkles.

When the foam layer 13 is formed as described above, one end of the coupling end portion 17 is compressed while the coupling end portion 17 introduced into the semi-circular shape into the inner surface of the foam layer cover portion 16 is compressed to the core layer 11. It is in close contact with the core layer 11 while being folded inward of the foam layer cover portion 16.

As described above, when one end of the coupling end portion 17 is folded into the inner side of the foam layer cover portion 16, the foam liquid fluid line 25 generated when the foam liquid 12 is foamed to form the foam layer 13 is formed. Looking at the pressure distribution with reference to Figure 5 as follows.

As shown in FIG. 5, when the foaming liquid 12 is foamed while the skin layer 15 and the core layer 11 are completely in contact with each other, the foaming liquid injected into the inner surface of the foam layer cover part 16 ( The foam layer 13 is formed while 12) is foamed and raised to the upper side.

When the foam layer 13 is formed while proceeding from the bottom to the upper side as described above, pressure is first transmitted to the coupling end portion 17 folded into the foam layer cover portion 16 and then the core layer 11 and the coupling end portion are formed. Pressure is transferred secondarily between 17.

When pressure is transmitted to the coupling end 17 folded into the inner side of the foam layer cover portion 16 as described above, the pressure closely couples the coupling end 17 to the core layer, thereby coupling the coupling end 17 and the core layer. The gap between (11) is prevented in advance, and the primary pressure that the bonding end 17 and the core layer 11 are in close contact is diverted to the inner side of the foam layer cover portion 16.

As described above, after the primary pressure closely couples the coupling end 17 to the core layer 11, the foam layer 13 proceeds upward to transfer the secondary pressure between the coupling end 17 and the core layer 11. .

As described above, the secondary pressure acts between the coupling end 17 and the core layer 11 to generate a gap between the coupling end 17 and the core layer 11, but the primary pressure is continuously coupled. Since the end 17 is in close contact with the core layer, the primary pressure cancels the secondary pressure, and since the pressure generated in the foam layer 13 is dispersed between the primary pressure and the secondary pressure, the secondary pressure itself is Compared to the prior art, the state becomes relatively weaker, so that a gap does not occur between the coupling end 17 and the core layer 11.

In addition, since the pressure is dispersed and the primary pressure keeps the coupling end 17 in close contact with the core layer 11, it is possible to prevent the coupling end 17 from being pushed outwards, thereby Since the shape is maintained intact, it is possible to prevent the problem that the skin layer 15 is wrinkled or deformed in the related art.

As described above, the present invention can prevent the gap between the core layer 11 and the coupling end 17 in advance, thereby preventing leakage of the foaming liquid 12 and the foam layer 13 into the coupling end 17. It can eliminate the process according to the conventional removal of the leaked foam (12) or foam layer (13) can not only increase the productivity of the product but also increase the completeness of the product can increase the competitiveness of the product There is an advantage.

In addition, by blocking the deformation of the skin layer 15 in advance, not only the appearance is excellent in completeness, but also the cost due to leakage of the foam liquid 12 can be saved.

As described above, the present invention does not require a process due to the removal of the leaked foam liquid and the foam layer by blocking the foam liquid or the foam layer in advance when the skin layer is in close contact with the core layer to form the foam layer, thereby increasing productivity. Is effective.

In addition, since the foam or the foam layer does not leak from the skin layer, the appearance is clean and the product has a high degree of completion, which is effective for securing the competitiveness of the product.

In addition, the leakage of the foaming liquid can be blocked, and thus the foaming liquid can be used only as much as the quantitative amount, thereby reducing the cost of the leakage of the foaming liquid.

Claims (1)

The core layer 11 formed to support the entire instrument panel 10 and the skin layer 15 and the core layer 11 covering the upper portion of the core layer 11 to improve the texture and aesthetics of the instrument panel 10. In the instrument panel 10 formed between the foam layer and the skin layer 15 and absorbs external impact, The skin layer 15 has a foam layer cover portion 16 covering the foam layer 13 and an Ω-shaped coupling end portion which is bent inward to the outside of the foam layer cover portion 16 and then pulled out a predetermined length to the outside. Skin layer structure for preventing the leakage of foam liquid of the instrument panel, characterized in that consisting of (17).