Inner trimming material for automobile

Description: TECHNICAL FIELD [Detailed description of the invention]

【0001】

[Technical field to which the invention belongs]

The present invention relates to an automobile interior material attached to a door, a vehicle body, or the like for decoration or occupant protection.

【0002】

[Conventional technology]

Conventionally, interior materials for automobiles, which are attached to doors and car bodies for decoration and occupant protection, are manufactured by manually attaching a skin material such as leather to the core material in high-end models, and in mass-produced models, they are made into lower molds. By adsorbing a skin material such as leather, holding the insert core material in the upper mold, matching the upper and lower molds, and injecting a foamed synthetic resin material between the skin material and the insert core material to foam it. It was common to manufacture. In this way, manufacturing using the upper and lower molds can be partially automated and productivity is significantly improved, and the skin material and insert core material are integrated with foamed synthetic resin, which improves durability and durability. In addition, it had the advantage of stable quality. However, since the interior material manufactured in this way uses a plurality of different materials, the number of parts increases, the processing process inevitably becomes complicated, it is difficult to increase productivity, and it causes cost increase. In addition, there is a problem that the product weight becomes heavy. In addition, since the interior material integrated with the foamed synthetic resin is formed and integrated with multiple resins made of different materials, it is difficult to separate each material during disposal or recycling, which may lead to various problems. It was.

【0003】

[Problems to be Solved by the Invention]

An object of the present invention is to provide an interior material for an automobile, which has a small number of parts, can simplify a processing process, can improve productivity, and can be reduced in weight.

【0004】

[Means for solving problems]

In order to achieve the above-mentioned object, the present invention claims an automobile interior material in which a mounting portion having a spring property is provided on the back surface of a molded base material having a cushioning property and a skin is formed on the surface surface of the molded base material. In the invention of claim 1, an automobile interior material in which the skin is integrally molded on the surface of the molded base material is the invention of claim 2, and the skin is covered on the surface of the molded base material. An automobile interior material is the invention of claim 3, and in any of the inventions of claims 1 to 3, an automobile interior material in which reinforcing ribs are formed at required positions on the back surface of the molded base material is claimed 4. In the invention of any one of claims 1 to 4, an automobile interior material in which a groove for shock absorption for deforming or breaking the molded base material is formed in the molded base material is the invention of claim 5. In any of the inventions of claims 1 to 5, an automobile interior material having a mesh-like molding base material is defined as the invention of claim 6, and in any of the inventions of claims 1 to 5, the back surface of the molding base material is used. The invention of claim 7 is an automobile interior material in which innumerable small protrusions are formed.

【0005】

BEST MODE FOR CARRYING OUT THE INVENTION

Next, preferred embodiments of the present invention will be described in detail with reference to FIGS. 1 and 2. Reference numeral 1 denotes an injection-molded plastic molded base material, and the molded base material 1 is a net-like material in which innumerable through holes 1a are transparently formed on the entire surface, and has cushioning properties as a whole. Reference numeral 2 denotes a mounting portion for mounting the molded base material 1 to the vehicle body, and the mounting portion 2 is molded integrally with the molding base material 1 and provided at a required position on the back surface of the molding base material 1, and the tip thereof. Is a locking hook portion 2a that is engaged with the mounting hole of the vehicle body, and an arc-shaped spring portion 2b is provided in the middle. Due to the spring portion 2b, the locking portion 2 itself also has a cushioning property. By providing the mounting portion 2 with springiness in this way, when the occupant collides with the molding base material 1, the mounting portion 2 does not damage the occupant as a protrusion and is molded by the mounting portion 2. The cushioning property of the base material 1 does not deteriorate.

【0006】

Reference numeral 3 denotes a reinforcing rib formed on the upper edge eaves portion 1b, the peripheral eaves portion, or the locking portion 2 of the molded base material 1, and the reinforcing ribs 3 are the side surfaces of the molded base material 1 and the upper edge eaves portion 1b. When a load is applied from above, the upper edge eaves 1b or peripheral eaves of the molded base material 1 are allowed to be deformed, but they are prevented from bending or the locking portion 2 is prevented from bending from the root. Is for. Further, a large number of pins 4 for piercing the peripheral edge of the skin 5 covered on the surface of the molded base material 1 are formed so as to protrude on the end surface of the upper edge eaves 1b on which the reinforcing ribs 3 are formed and the peripheral eaves (not shown). There is. The reason why the pin 4 is formed at the position where the reinforcing rib 3 is located is that when the skin 5 is involved and the peripheral edge thereof is stabbed into the end face of the eaves, the molded base material 1 having cushioning property is greatly deformed and the skin 5 is stretched. This is to prevent the slack from occurring in the eaves.

【0007】

Reference numeral 5 denotes a skin to be worn on the surface of the molded base material 1. The skin 5 is made of a material softer than the molded base material 1 as a leather material laminated with a urethane layer. Further, the peripheral edge of the epidermis 5 is pierced by a pin 4 formed on the upper edge eaves 1b of the molding base material 1 and the end surface of the peripheral eaves, and the pin 4 is punctured after the peripheral edge of the epidermis 5 is punctured. , The tip is crushed by heating to fix the epidermis 5.

【0008】

Reference numeral 6 denotes a groove formed at a required position on the back surface of the molding base material 1, and the groove 6 promotes deformation of the molding base material 1 when an occupant collides violently with the molding base material 1 or promotes deformation of the molding base material 1. The purpose is to promote breakage, absorb collision energy, and reduce the force applied to the occupant. The position, length, depth, shape, etc. of the groove 6 are the shape and material of the molded base material 1. Alternatively, it is appropriately set depending on the thickness and the like.

【0009】

With this configuration, if the mounting portion 2 on the back surface of the molded base material 1 is aligned and pushed into the mounting holes formed at predetermined locations such as the automobile body and the door, the tip of the mounting portion 2 is locked. As shown in FIG. 2, the hook portion 2a is fitted and locked in the mounting hole of the automobile body, and the required parts on the inner surface of the automobile body, the inner surface of the door, and the like are covered with the interior material. In the automobile body and the door covered with the interior material in this way, the soft skin 5 covering the surface provides a soft touch. In addition, when the occupant's body inadvertently hits the interior material, the energy is buffered by the cushioning property of the soft skin 5 and the molded base material 1 and the spring portion 2b of the mounting portion 2, so that it hurts. There is no such thing. Further, when an occupant violently hits the interior material due to a traffic accident or the like and a sudden force exceeding the cushioning property of the molded base material 1 or the elastic limit of the spring portion 2b is applied, the groove 6 formed in the molded base material 1 The molded base material 1 is bent and deformed, or the molded base material 1 is broken from the groove 6 and absorbs the energy, so that the impact applied to the occupant can be reduced and damage to the occupant can be suppressed. Can be done.

【0010】

In the preferred embodiment, the skin 5 is placed on the molding base material 1, but when the molding base material 1 is molded, the soft skin 5 made of a different material is molded following the molding of the molding base material 1. Two-layer molding may be performed by molding on the base material 1, and at the time of this molding, if leather-like grain or sewing stitch (thread) is molded on the surface of the skin, a leather-like skin can be obtained. When such two-layer molding is performed, the skin 5 is also formed at the same time as the molding base material 1 is molded, so that the work of wearing the skin 5 becomes unnecessary and the productivity can be improved. Further, in the preferred embodiment, the skin 5 is stabbed into the pin 4 of the molding base material 1 and the pin 4 is welded and fixed, but the peripheral edge of the skin 5 is adhered to the molding base material 1. Of course, it may be.

【0011】

Further, FIG. 3 shows another embodiment of the molding base material 1. By reducing the wall thickness of the molding base material 1 and forming a large number of protrusions 7 on the back surface thereof, the strength of the molding base material 1 is increased. While maintaining the above, the molded base material 1 is provided with cushioning properties, and a soft skin 5 made of a material different from that of the molded base material 1 is integrally molded on the surface of the molded base material 1. Leather-like grain and sewing stitches (threads) are provided on the surface of the skin 5, making the skin 5 leather-like. Further, in each of the preferred embodiments described above, the spring portion 2b of the mounting portion 2 is arcuate, but it may be a doglegged spring portion 2b. Of course, any spring portion 2b may be used as long as it can be molded.

【0012】

[Effect of the invention]

As is clear from the above description, in the present invention, since the mounting portion having spring property is provided on the back surface of the molded base material having cushion property, the urethane foam resin is provided between the core material and the skin as in the conventional case. Sufficient cushioning can be obtained without providing a more cushioning layer, so that the processing man-hours can be reduced and the number of parts can be reduced, so that a significant cost reduction can be achieved. Furthermore, by eliminating the need for a cushion layer, it is possible to significantly reduce the weight of automobile parts, which is the highest priority. If the soft skin is integrally molded on the surface of the molded base material by the two-layer molding as in claim 2, the productivity can be significantly improved and the cost can be reduced. Become. If the skin is covered with the surface of the molded base material as in claim 3, resins of different materials can be easily separated and disposed of or recycled easily. By forming reinforcing ribs on the back surface of the molded base material as in claim 4, the molded base material has sufficient shape retention and strength even though the molded base material has cushioning properties. Can be done. By forming a groove for shock absorption that deforms or breaks the molded base material as in claim 5, when a large collision energy is applied, the molded base material is deformed or broken to absorb the energy. , The impact force applied to the occupant can be reduced and the safety can be improved. By forming the molded base material into a net shape as in claim 6, it is possible to easily impart cushioning properties to the molded base material. As in claim 7, by forming innumerable protrusions on the molded base material, the thin molded base material having cushioning properties can have various advantages such as shape retention and required strength. It is a thing. Therefore, the present invention greatly contributes to the development of the industry as an interior material for automobiles that solves the conventional problems.

[Simple explanation of drawings]

[Figure 1]

It is a partially cutaway perspective view which shows the preferable embodiment of this invention.

[Figure 2]

It is an enlarged sectional view which shows the preferable embodiment of this invention.

[Fig. 3]

FIG. 5 is an enlarged cross-sectional view showing another preferred embodiment of the present invention.

[Explanation of symbols]

1 Molded base material 2 Mounting part 3 Reinforcing ribs 5 epidermis 6 grooves 7 Small protrusions