JPH0681701B2 - Terminal treatment method for vehicle interior materials - Google Patents

Description

TECHNICAL FIELD The present invention relates to a terminal treatment method for a vehicle interior material, and more specifically, an interior base material and a skin joined to the surface side of the interior base material. The present invention relates to a terminal treatment method for an interior material for a vehicle, the end portion of the skin material being folded back from the end of the interior base material to the back side of the interior base material and fixed.

[Conventional technology]

BACKGROUND ART Conventionally, there have been molded ceilings, door trims, rear parcels, trunk trims, and the like as interior materials for vehicles and the like, and those using synthetic resin materials or resin felts as interior base materials for these interior materials are known.

As shown in FIG. 4, this interior base material 2 is coated with resin felt 5
In the case of further molding, the resin felt 5 is inserted into the hot press molding die 12 composed of the lower die 13 and the upper die 14, and 220 ° C.
By hot pressing for about 60 seconds, hot press molding into a desired shape.

Next, the upper mold 14 is opened, the terminal 2a of the interior base material 2 made of the resin felt 5 is cut into a product shape, and then the temperature of the lower mold 13 of the heat press mold 12 is about 150 ° C. With the temperature lowered to about 130 ° C., as shown in FIG. 5, the skin material 3 is laminated on the surface of the molded interior base material 2 with an adhesive or the like, and as shown in FIG. The skin material 3 is bonded to the interior base material 2 by the mold 14.

Next, a part of the terminal portion 3a of the skin material 3 is cut, and the terminal portion 3a of the display material 3 is folded back from the terminal 2a of the interior base material 2 to the back surface side of the interior base material 2 and fixed by bonding or the like. As shown in the figure, the interior material 1 is formed.

[Problems to be Solved by the Invention]

However, it is difficult to fold the end portion 3a of the skin material 3 to the back surface side of the interior base material 2, it is difficult to fold the end portion 3a of the skin material 3 uniformly, and the terminal line meanders to deteriorate the appearance. Was there.

In addition, the terminal of the interior material 1 is easily damaged, and when the weight of the terminal is increased or a reinforcing material is separately formed and joined to the back surface side of the interior base material 2, the work process is increased, and the interior can be easily and quickly installed. It was difficult to obtain material 1.

Further, there is a drawback that the steps of cutting the interior base material 2 and the skin material 3 are required and the work becomes complicated.

An object of the present invention is to eliminate the step of cutting the end portion of the skin material, and to easily and quickly fold the end portion of the skin material to the back side of the interior base material, which may cause the terminal line to meander. Provide a terminal treatment method for a vehicle interior material that can easily and quickly perform the terminal treatment work without increasing the external appearance and increasing the strength of the terminal of the interior material without separately forming and joining a reinforcing material. To do.

[Means for Solving the Problems]

The present invention has been made in view of the above-mentioned problems, and is composed of an interior base material and a skin material joined to the surface side of the interior base material, and the end portion of the skin material is more interior than the end of the interior base material. In a terminal treatment method for an interior material for a vehicle, which is folded back and fixed to a back surface side of a base material, a curved portion is formed inward from the end of the interior base material with a constant curvature, and the interior is formed when the interior base material is molded. A fold-back portion is integrally formed outward from the end of the base material, the fold-back portion is formed with a curvature corresponding to the bend portion of the interior base material, and the fold-back portion is integrally bonded to the end portion of the skin material. Formed in the state of, the folded portion is cut at the end of the interior base material, the folded portion is folded back and joined to the back side from the end of the interior base material, and the folded portion formed by the bending is formed on the interior base material. It is characterized in that it is fixed in a state of being in close contact with the curved portion.

[Action]

According to the present invention, the curved portion is formed inward from the end of the interior base material with a constant curvature, and the folded portion is integrally formed outward from the end of the interior base material during molding of the interior base material, The folded portion is folded back and joined to the back surface side of the interior base material, and since the folded portion is formed in a state of being integrally joined to the end portion of the skin material, the work of folding the end of the skin material is easy and The terminal can be pulled evenly by using the folded portion, and there is no fear that the terminal line meanders.

Further, the folded-back portion is curved and formed with a curvature corresponding to the curved portion of the interior base material, and the folded-back portion can be integrally formed at the time of molding the interior base material.

This folded part is folded back together with the end part of the skin material on the back side from the end of the interior base material, and the bent part that is curved is fixed in close contact with the curved part of the interior base material, so the strength of the end of the interior material It is possible to increase the number of parts having the above, and to omit the step of cutting the end portion of the skin material, so that the terminal treatment work can be performed simply and quickly.

〔Example〕

The terminal treatment method for a vehicle interior material according to the present invention will be described in detail below with reference to the drawings.

1 to 3 show the molding steps of one embodiment of the method of the present invention. In this embodiment, the interior material 21 is used.
Each of the cases is applied to a molded ceiling of a vehicle.

The interior material 21 is formed of an interior base material 22 and a skin material 23 joined to the surface side of the interior base material 22, and a terminal portion 23a of the skin material 23 has an interior base material as shown in FIG. It is folded back from the terminal P of 22 to the back side of the interior base material 22 and adhesive or tacker
It is fixed by 27.

The terminal portion 23a of the corrugated member 23 is joined to the folded-back portion 25 which is formed integrally with the interior base material 22 and formed by cutting.

Next, the molding process of the interior material 21 will be described with reference to FIGS. 1 to 3.

First, the interior base material 22 is formed into a desired shape. This interior base material 22
Is molded from a synthetic resin material such as urethane resin or urethane foam resin, or resin felt, and is formed larger than the position P of the end of the interior base material 22 to be formed.
A curved portion 28 is formed inward from the terminal P of 22 with a constant curvature, and the terminal P of the interior base material 22 is formed when the interior base material 22 is molded.
The folded-back portion 25 is integrally formed outward.

The folded-back portion 25 is curved with a curvature corresponding to the curved portion 28 of the interior base material 22, and an arc-shaped curved portion 26 is formed.

After integrally molding the interior base material 22 and the folded portion 25, the skin material 23 is bonded to the surface side of the interior base material 22. Terminal part of skin material 23
23a is joined to the folded-back portion 25, and the bottom portion 26a of the arc-shaped curved portion 26 of the folded-back portion 25 and the end portion 23a of the skin material 23 are formed in a non-joined state.

Even when the work of joining the skin material 23 to the interior base material 22 and the folded portion 25 is performed, it is relatively difficult to make the skin material 23 follow the bottom portion 26a of the arc-shaped curved portion 26, resulting in As shown in FIG. 1, the end portion 23a of the skin material 23 and the bottom portion 26a of the curved portion 26 are formed.
And are in a peeled state, and a non-bonded state in which the end portion 23a of the skin material 23 floats is obtained.

Further, although the skin material 23 is shown as one sheet in this embodiment, it is also possible to use a laminated product including a surface skin and a cushioning material bonded to the back surface of the skin. still,
It will be apparent that the non-bonded state can be obtained without applying an adhesive to the end portion 23a of the skin material 23 and the bottom portion 26a of the curved portion 26.

Next, as shown in FIG. 1, the interior base material 22 is cut at the position of the terminal P.

Next, as shown in FIG. 3, a folded-back portion 25 having an arcuate curved portion 26 left after being cut from the end P of the interior base material 22 is provided.
When the terminal P of the interior base material 22 is folded back to the back side of the interior base material 22, the terminal portion 23a of the skin material 23 is folded back to the back side of the interior base material 22.

It is generally known that the skin material 23 is formed of cloth, synthetic resin, or the like.These skin materials 23 have elasticity, and when the folding part 25 is folded, the skin material 23 is sufficient. It is pulled to. Further, if the terminal portion 23a of the skin material 23 is arranged on the bottom portion 26a side of the curved portion 26 with an appropriate margin, it can be easily folded. And the arc-shaped curved part
The interior base material 22 and the folded-back portion 25 are bonded with an adhesive in a state where the folded-back portion 25 having 26 is closely attached to the curved portion 28 of the interior-base material 22,
Alternatively, the interior material 21 is end-treated by fixing it with a tacker 27 or the like.

Further, FIG. 2 shows the end P position of the interior base material 22 and a state in which one end of the curved portion 26 is cut at the Pc position at an appropriate distance from the end P position in the direction of the folded portion 25. . By cutting from the end P position of the interior base material 22 by the thickness of the interior base material 22, when the curved portion 26 of the interior base material 22 is folded back to the back side, the skin material 23 is folded back without extending. ing. Even in the cut state shown in FIG. 2, the end treatment of the interior material 21 shown in FIG. 3 is performed.

[Advantages of the Invention] The above is a method of an embodiment of the terminal treatment method for a vehicle interior material according to the present invention. According to such a method, a curve with a constant curvature is provided inward from the terminal of the interior base material. Part is formed, and when the interior base material is molded, the folded portion is integrally formed outward from the end of the interior base material, and the folded portion is cut at the end of the interior base material and folded back to the back side of the interior base material. Since the folded-back portion is formed integrally with the end portion of the skin material, it is easy to fold the end portion of the skin material and pull the terminal uniformly using the folded-back portion. Therefore, the appearance can be improved without the possibility that the terminal line meanders.

Further, the folded-back portion can be integrally formed at the time of molding the interior base material, and the folded-back portion is folded back together with the end portion of the skin material on the back side from the end of the interior base material, and the bent-back portion is formed into the interior base material. Since it is fixed in close contact with the curved portion of the interior material, it is possible to increase the strength of the terminal of the interior material.
Further, it is possible to omit the step of cutting the end portion of the skin material, and it is possible to obtain a terminal treatment method for a vehicle interior material that can perform the terminal treatment operation simply and quickly without the need to separately form a reinforcing material.

[Brief description of drawings]

1 to 3 show respective molding steps of an embodiment of a method for terminal treatment of a vehicle interior material according to the present invention, and FIG. 1 is a sectional view showing a state in which a skin material is joined to an interior base material. FIG. 2 is a cross-sectional view showing different cut states of the interior base material, FIG. 3 is a cross-sectional view showing a state in which the folded portion is folded and fixed, and FIGS. 4 to 7 show a conventional interior material forming process, respectively. FIGS. 4 to 6 are sectional views of the molded state, and FIG. 7 is a sectional view of the interior material. In the figure, 21 ... Interior material, 22 ... Interior base material, 23 ... Skin material,
23a ... terminal part, 25 ... folding part, 26 ... V-shaped curved part, 26a ... bottom part, 28 ... curved part, P ... terminal.

Claims (1)

[Claims] 1. An interior base material and a skin material joined to the front surface side of the interior base material, wherein the end portion of the skin material is folded back from the end of the interior base material to the back surface side of the interior base material. In the terminal treatment method for a vehicle interior material to be fixed, a curved portion is formed inward from the end of the interior base material with a constant curvature, and is folded back outward from the end of the interior base material during molding of the interior base material. And the folded-back portion is formed with a curvature corresponding to the curved portion of the interior base material, and the folded-back portion is formed integrally with the end portion of the skin material. Cut the part with the terminal of the interior base material, fold and join the folded part to the back side from the end of the interior base material, and fix the bent-back part formed in a curved shape in close contact with the curved part of the interior base material. A terminal treatment method for a vehicle interior material, comprising: