JPH0526321U - Interior parts for automobiles - Google Patents

Abstract

(57) [Abstract] [Purpose] An object of the present invention is to provide an automobile interior part in which a lightweight urethane core material is used to promote weight reduction and which has good cushioning performance with a low-priced structure. And [Structure] When the hard urethane core material 12 is molded, the compression urethane 13 is integrated on the surface side of the hard urethane core material 12, so that the elastic action of the compression urethane 13 and the impregnation of the hard urethane resin liquid are compressed urethane. Interior parts for automobiles that ensure good cushioning performance by the function of suppressing the flat cells inside 13.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to automobile interior parts such as various pillar trims and door trims, and particularly relates to automobile interior parts that can be manufactured at low cost while reducing the weight of the product.

[0002]

[Prior Art]

 For example, various interior parts are installed in the interior of an automobile. The interior parts are made of fiberboard that has shape retention and rigidity for mounting on the vehicle body panel. A laminated structure is generally known in which a core material formed by molding a resin board or the like into a required shape and a skin material having cushioning and decorative properties are laminated on the surface side of the core material.

By the way, as a drawback of a core material made of a fiber board, a resin board, etc., there is a tendency that it is heavy and is not suitable for reducing the weight of the product, and the moldability is not satisfactory. There was a problem that it could not be applied to products with complicated curved surface shapes.

As a countermeasure against this, it has been proposed and implemented to use a hard urethane reinforced with a glass mat or the like as a core material to promote weight reduction and improve moldability.

FIG. 6 is a sectional view showing the structure of an automobile door trim using a hard urethane core material. In the drawing, an automobile door trim 1 has a glass mat 2 as an inner layer and is molded into a desired shape of hard urethane. The core material 3 is generally composed of a pad material 4 such as a polyurethane foam having a cushioning property which is laminated and integrated on the surface side thereof, and a skin material 5 which imparts a decorative property and a good surface feel.

Further, a urethane film 6 is preliminarily laminated on the surface of the pad material 4 that comes into contact with the hard urethane core material 3 to prevent the hard urethane resin liquid from entering the pad material 4.

The manufacturing process of the door trim 1 will be briefly described. First, as shown in FIG. 7, the pad material 4 obtained by laminating the urethane film 6 on the mold surface of the foam molding female mold 7 and the urethane film 6 on the upper side. And set the glass mat 2 from above.

Then, after injecting the hard urethane resin liquid, as shown in FIG. 8, the foam molding male mold 8 is engaged with the foam molding female mold 7 to form the hard urethane core material 3 into a desired shape. In addition to molding, the hard urethane core material 3 and the pad material 4 are integrated.

At this time, the hard urethane resin liquid is blocked by the urethane film 6 and does not penetrate into the pad material 4, so that the cushioning property of the pad material 4 is not impaired.

Thereafter, as shown in FIG. 9, when the skin material 5 is pressure-bonded and integrated with the hard urethane core material 3 in which the pad material 4 is integrated, the door trim 1 shown in FIG. 6 is obtained. Can be manufactured.

[0011]

[Problems to be solved by the device]

 As described above, in the conventional automobile interior parts using the hard urethane core material 3, when the pad material 4 such as polyurethane foam is used to secure the cushioning performance, the hard urethane resin liquid is used as the pad material. The urethane film 6 is laminated on one surface of the pad material 4 so that it does not penetrate into the interior of the pad 4 and hinder the cushioning performance. It has been pointed out that the processing cost for laminating the material 4 is high and the product cost is significantly increased.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an inexpensive interior component for an automobile, which uses a hard urethane core material to reduce the weight. The purpose is to provide interior parts for automobiles that have excellent cushioning performance.

[0013]

[Means for Solving the Problems]

 In order to achieve the above object, an automobile interior part according to the present invention has a hard urethane core material molded in a required shape, and a surface side of the hard urethane core material during molding of the hard urethane core material. It is characterized in that it is composed of an integrated compressed urethane and a skin material attached to the surface side of the compressed urethane.

[0014]

[Action]

 As is clear from the above structure, since the cells of the compressed urethane obtained by compressing commercially available slab urethane foam are flattened, some of the hard urethane resin liquid is impregnated into the compressed urethane. The flat cells control the invasion and only partially impregnate them, and the cushioning performance of compressed urethane is not impaired.

Further, as compared with the conventional structure in which a urethane film is laminated on a polyurethane foam, a simple process of compressing the polyurethane foam is sufficient, and the processing cost can be reduced.

[0016]

【Example】

 Hereinafter, an embodiment of an automobile interior part according to the present invention will be described in detail with reference to the accompanying drawings.

FIGS. 1 and 2 show an embodiment in which the present invention is applied to a pillar trim. FIG. 1 is an external view of a pillar trim, FIG. 2 is a sectional view showing the structure of the pillar trim, and FIGS. 3 to 5 are the pillar trims. FIG. 7 is a cross-sectional view showing the manufacturing process of.

First, referring to FIGS. 1 and 2, a pillar trim 10 includes a hard urethane core material 12 having a glass mat 11 as an inner layer, a compression urethane 13 integrated on the surface side of the hard urethane core material 12, and It is generally composed of a skin material 14 that covers the outer surface of and has a good surface appearance and feel.

More specifically, the compression urethane 13 used is a slab urethane foam, which has a thickness of 15 to 20 mm and is compressed to a compression ratio of about 3 to 5 mm and a ratio of 1/4 to 1/5. The urethane density after compression is adjusted to 0.15 to 0.30 g / cm ³ , and in this embodiment, the trade name Kurabo Industries 340F is used.

According to the results of experiments conducted by the inventor, when the compression urethane 13 obtained by compressing a slab urethane foam having a thickness of 20 mm to 4 mm is used, the foaming pressure of the hard urethane resin liquid is 1.5 to ² kg / cm ^2. It was confirmed that impregnation of the urethane resin liquid was observed only up to 2 mm 2 of the thickness 4 mm of the compressed urethane 13, and the compressed urethane 13 still maintained sufficient cushioning performance.

As the skin material 14, a slush molded skin material having a good surface appearance and surface feel is used, and a slash skin layer 14a is formed on the front surface side and a slush foam layer 14b is formed on the back surface side by slush molding. The formed two-layered skin material 14 is used in this embodiment.

As described above, in the pillar trim 10 having the above-described structure, the skin material 14 having an excellent surface feel and surface appearance is used, and the hard urethane core material 12 that can greatly contribute to weight reduction is used. By using the inexpensive compressed urethane 13, a favorable cushioning effect can be obtained, so that there is an advantage that the pillar trim 10 having an extremely soft feeling can be provided.

Further, compared with the conventional polyurethane foam laminated with a urethane film, in the present invention, only the compressed urethane 13 obtained by compressing the polyurethane foam is used, so that the material cost and the processing cost can be reduced.

Next, a manufacturing process of the pillar trim 10 will be briefly described with reference to FIGS. 3 to 5.

First, as shown in FIG. 3, the compression urethane 13 and the glass mat 11 are set on the mold surface of the foam molding female mold 20, respectively. At this time, when the product shape is set to a complicated curved surface shape, if a vacuum mold is used as the foam molding female mold 20, the compression urethane 13 faithfully follows the mold surface of the foam molding female mold 20. In comparison with the above-mentioned examples, there are advantages that the moldability is excellent and wrinkles do not occur.

Then, as shown in FIG. 4, the hard urethane resin liquid 22 is injected into the mold of the female mold 20 for foam molding through the nozzle 21 of the foam molding machine.

Thereafter, as shown in FIG. 5, the foam molding male die 23 is engaged with the foam molding female die 20 to mold the hard urethane core material 12 having the glass mat 11 as an inner layer into a desired shape. At the same time, the compression urethane 13 is integrated with the hard urethane core 12.

At this time, as described above, the compressed urethane 13 is only partially impregnated with the hard urethane resin liquid 22, and the cushioning performance of the compressed urethane 13 is not impaired.

After the hard urethane core material 12 and the compressed urethane 13 are integrated in this way, the skin material 14 is pressure-bonded and integrated by a separate pressure-bonding die (not shown), as shown in FIGS. 1 and 2. The manufacture of the pillar trim 10 is completed.

[0030]

[Effects of the Invention] As described above, the interior parts for automobiles according to the present invention use the hard urethane core material to reduce the weight and mold the hard urethane core material to provide cushioning performance. At the time of molding, the compressed urethane is integrated with this hard urethane core material, so the hard urethane resin liquid is only partially impregnated into the compressed urethane due to the flat cells of the compressed urethane. Since the cushioning performance of compressed urethane is not impaired, it has the effect of providing interior parts with an extremely soft feel.

Further, in comparison with the conventional structure in which a conventional urethane film is laminated on a urethane foam, the structure using compressed urethane can significantly reduce the material cost of the urethane film and the laminating cost of both. Has the effect of inviting.

[Brief description of drawings]

FIG. 1 is an external view showing a pillar trim to which the present invention is applied.

FIG. 2 is a sectional view taken along line II-II in FIG.

FIG. 3 is a cross-sectional view showing a material setting process in the manufacturing process of the pillar trim shown in FIG.

FIG. 4 is a process for manufacturing the pillar trim shown in FIG.
Sectional drawing which shows the injection process of hard urethane.

5 is a process for manufacturing the pillar trim shown in FIG.
Sectional drawing which shows a foam molding process.

FIG. 6 is a cross-sectional view showing a configuration of a conventional automobile door trim.

7 is a cross-sectional view showing a step of injecting a urethane resin liquid in the manufacturing process of the door trim shown in FIG.

8 is a cross-sectional view showing a foam molding step in the manufacturing process of the door trim shown in FIG.

9 is a cross-sectional view showing a step of pressure-bonding a skin material in the manufacturing process of the door trim shown in FIG.

[Explanation of symbols]

 10 Pillar Trim 11 Glass Mat 12 Hard Urethane Core Material 13 Compressed Urethane 14 Skin Material 14a Slash Skin Layer 14b Slash Foam Layer 20 Foam Molding Female Mold 22 Hard Urethane Resin Liquid 23 Foam Molding Male Mold

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Claims (1)

[Scope of utility model registration request] 1. A hard urethane core material (12) molded into a required shape, and a compression integrated on the surface side of the hard urethane core material (12) during molding of the hard urethane core material (12). An automobile interior component comprising a urethane (13) and a skin material (14) attached to the surface side of the compressed urethane (13).