JPS585256A - Manufacture of interior finish material for automobile - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for producing interior materials for automobiles, such as automobile door trims, and in particular, to simplify the structure, reduce weight, and improve attachment to the vehicle body. Regarding the method.

Generally, a door trim for an automobile is made by adhering a foam material and a skin material to a core material and integrating them. This is installed along the curved shape of the inner panel of an automatic door.A typical example is a metal plate or A garnish 2 made of a tree molded body is fixed with a metal stitcher or the like to form a core material 3, a skin 5 is welded to the surface of this core material 3 via a pad material 4, and the end portion is attached to the core material 3. In addition to echoing and pasting on the back side of the
A weather strip 5 is attached to the tip of the garnish 2 to complete the door trim 6.

In addition, in order to attach this door trim 6 to the inner panel 7 of the vehicle body, the garnish 2 is fitted to the upper curved surface of the inner panel 7, and a mounting clip 8 is provided protruding from the vertical side wall of the door trim 6. This clip 8 is attached to the locking hole 7 formed in several places in the vertical side wall 7A of the inner panel 7.
The attachment is completed by elastically fitting into B.

Furthermore, as shown in FIG. 2, for example, the above-mentioned garnish 2 is eliminated, the pad material 4 and the skin material 5 are extended from the extension of the core material 3, and the weather strip provided in advance on the inner panel 7 is Some are attached to the casing 10 in a fitted manner.

Furthermore, as shown in FIG.
There is also one in which a skin material 5 is attached and integrated.

However, the door trim as shown in Fig. 1 requires an extremely large number of processing steps, and the molded product is relatively stiff, and furthermore, the curved shape is formed along the curved surface of the inner panel. However, it has disadvantages such as being bulky when transported.

Furthermore, although a door trim as shown in FIG. 2 can be made lighter to some extent, it still requires many man-hours to process and is difficult to attach to the vehicle body because it is fitted into the vehicle body.

Furthermore, the molded door trim shown in Fig. 3 is heavy overall, requires an extremely large number of processing steps, and is expensive due to the use of resin moldings, and is formed into a curved surface. Because of this, they each had drawbacks, such as the amount of capital required during transportation and the bulkiness of calculations.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to simplify the manufacture of a cough lining material and to reduce its weight.

In order to achieve the above object, the present invention forms a laminate plate in which a synthetic resin sheet material, a synthetic resin foam material, and a synthetic resin hollow core material are laminated into one, and the cough laminate plate is installed in the interior of an automobile. The purpose of the present invention is to provide a method for constructing an interior material for an automobile, which is characterized by welding and fusing along the outer periphery of an inner panel formed in each part, as well as processing a curved surface. An example of application to a door trim for an automobile will be described in detail with reference to the drawings from FIG. 4 onwards.

In FIG. 4, a laminate plate 10 according to the present invention includes a synthetic resin sheet, that is, a skin material 11, a synthetic resin sheet, that is, a pad material 12, laminated on the lower surface thereof, and a synthetic III&I layer laminated on the lower surface thereof. The above-mentioned members are integrated by heat lamination or the like to form a rigid laminate plate 10. Further, the hollow core material 13 is composed of a corrugated core portion 14 and front and back plates 15 stacked on the front and back sides of the corrugated core portion 14.
It has strong rigidity in the direction orthogonal to the am of 114, and relatively flexibility in the longitudinal direction. Various materials can be used for the members constituting these laminate plates 10 through subsequent processing steps.

When processing is carried out by high frequency welding, the skin material 11 is made of vinyl chloride sheet, the pad material 12 is made of vinyl chloride foam, and the corrugated core part and the front and back plates 15 of the hollow core material are both made of vinyl chloride.

Further, when the mentioned processing step is ultrasonic processing or heating processing, there are no restrictions on these materials.

For example, the skin @11 may be made of any material such as a vinyl chloride sheet, a polypropylene sheet, or a polyethylene sheet. Similarly, the pad material described above can be made of polyethylene foam, polypropylene foam, etc., and the hollow core material can also be made of polyethylene, polypropylene, or the like. Therefore, various choices can be made depending on the type of subsequent processing process, but it is best to choose from among the three that are made of relatively the same materials and have lower material costs. can.

Next, in the case where all of the members constituting the laminate plate 1o are made of vinyl chloride, the order of processing with the image frequency welder will be explained with reference to the drawings from FIG. 5 onwards.

First, the laminate plate 1o, which has been trim-cut in advance into the desired external shape of the door trim, is placed on the lower mold electrode of the high-frequency welding device 2o.

The high frequency welding device 2o has a lower electrode plate 21 and an upper electrode plate 21, which is disposed opposite to the upper electrode plate 21. An electrode plate 22 and each weld bar 2 for forming the outer shape of the door trim erected on the lower electrode plate 21.
3, and a plurality of welder bars provided on the inner peripheral surface of each welder bar 23 and extending in a direction perpendicular to the paper surface.
24A.

24B, 24C-, :, 1'7IA, da/(-24
A.

Upper intermediate weld bars 25A, 25B, 25 disposed on the lower surface of the upper electrode plate 22 opposite to 24B...
It consists of C... And the above lower weld bar 2
3 directly contacts the lower surface of the upper electrode plate 22, and during welding, the tip portion of the laminate plate 10 is exposed to the outside of the laminate plate 10. The tip has a rectangular shape in order to cut the l.

Further, the upper intermediate welder bars 25A, . 21. In the state in which 22 is engaged, both middle-sized elder bars 24A, 24B..., 25A, 25B
...I try to leave a small gap between them.

Therefore, the laminate plate 10 is positioned and placed on the lower electrode plate, and the upper electrode plate 22 is placed on the lower electrode plate.
is engaged with the lower mold electrode plate 21, and by applying high frequency to both ends of the bar, welding is performed along the shape of each bar, the end portions are cut as shown in Fig. 6, and the middle portion is welded. 10A, 10
B, 10C, 10D... will be processed into thin grooves.

FIG. 7 shows a plan view of the door trim 3o obtained by the above-mentioned high-frequency welding process.

This product is processed according to the external shape of the door inner panel by the process described above, and
In the middle, full 3OA, 30B, 3 along the horizontal direction
0C, 300・S forming grooves, and although not explained in the above process, for example, an opening 31 for a lock knob,
An opening 32 for attaching an armrest, openings 33 and 34 for attaching a handle or a beg, etc. are integrally formed.

These will be simultaneously processed by the high frequency well mite process described above.

Each of the above thin walls 1113OA, 308, 300.30D...
- is formed along the curved surface of the inner panel 4o of the automatic umbrella door.

In other words, the 8th! lI indicates its installation status.

The inner panel 4o has a slit 41 at its lower edge.
is formed, and a mouth-shaped waist portion 42 is formed above the waist portion.

Further, a weather strip and a U-shaped casing 43 for assembling the weather strip are integrally attached to the portion of the waist portion 42 that is inserted into the back side of the door.

Therefore, in order to incorporate the above-mentioned door trim 30 shown in Figs. 6 and 7 above into the inner panel 40, its lower edge is inserted into the slit 41, and the mounting holes 34, 34... With the clips 44 inserted into the inner panel 40, the attachments formed at appropriate positions on the inner panel 40 are fitted into the holes 45, and the thin grooves 30A, 30B, 30G are formed in the open portions of the upper edges thereof. . . , and insert the upper edge into the U-shaped casing 43 to complete the mounting. Note that thin wall portions 30D other than the above thin wall portions 30A to 30C,
30E and 30F give a pattern to the door trim 30, and are not directly related to its bending, but by forming a large number of these grooves, even if the door trim has a gently curved surface, It is easily acclimatized and can be fitted and attached to the inner panel 40.

In the above embodiment, the door trim according to the present invention is integrally constructed using a frequency welder, but if other materials are used, other devices such as ultrasonic welder welding may be used. Alternatively, it is of course possible to construct it by hot welding or the like.

Next, FIG. 9 shows another embodiment of the present invention.

In this case, a door trim equivalent to the conventional molded door trim shown in FIG. By installing the door trim in a vacuum chamber and applying vacuum suction, and backing it up with pressurized air on the back side, the shape of the door trim precursor is formed into the same molded curved surface as the molded door trim.

Next, this molded body is individually stamped by welding as described above, and the outer periphery is cut by hemorrhoids to obtain one door trim.

Next, FIG. 10 shows another example of the laminate plate applied to the present invention, in which the hollow core material 63 of this laminate plate 60 has a corrugated core 64 and 9 sides of the core 64. It consists of a plate 65 that is integrated into the main body.

Even if this material is used, a door trim can be constructed using the same processing method as described above, but when such a laminate plate 60 is used, since there is no plate on the back side, the bending of the corrugated core portion 64 is difficult. This results in better acclimatization and adhesion to the inner panel of an automobile.

Further, in each of the above embodiments, the present invention is explained only in relation to the manufacture of door trims for automobiles, but the present invention is not limited to this and is applicable to other interior materials for iron fence automobiles, such as rear bar cells or dashes. It goes without saying that the present invention is applicable to all trim members such as side trim members in which the core, cushion, and skin are integrated and trimmed to match the shape of each inner panel.

As explained above in each of the embodiments, in the method for manufacturing an automobile interior material according to the present invention, as described above, a synthetic resin sheet material, a synthetic resin foam material, and a synthetic resin hollow core material are laminated to form a three-layer structure. The laminate plate is welded and fused along the outer periphery of the inner panel formed in each part of the interior of the automatic transmission room, and the laminate plate is curved.
Compared to the conventional method of processing the core, pad, and skin separately and forming them into one piece, the manufacturing process is extremely simple, as the molded product is completed in one process. Since a hollow core material is used as the core material, it is extremely lightweight, and can be formed into a shape that closely adheres to the curved surface of the inner panel by welding or vacuum forming. This method has many advantages, including the ability to produce products that are completely equivalent to conventional molded interior materials.

[Brief explanation of drawings]

Figures 1 to 3 are cross-sectional views showing conventional door trims;
Sectional drawing is a partial enlarged view Ii of a laminate plate to which the present invention is applied, FIGS. 5 and 6 are explanatory views 1IIiIi showing the manufacturing process of the present invention, and FIG. Figure 8 of the door trim flat IIi @ 11 is an explanatory ma side view when the same door trim is attached to the inner panel, Figure 9
III is an explanatory cross-sectional view showing the manufacturing process in an embodiment of the plane of the present invention, and FIG. 10 is a partially enlarged cross-sectional view III showing another example of the laminate plate of the present invention. 10... Laminate plate 11... Skin material 12... Pad material 13.60... Hollow core material 20... High frequency welding device 30A ~30F... Thin wall portion 59... Vacuum forming mold ○ Patent applicant Fig. 1 Fig. 2 Fig. 3 Fig. 4 Fig. 5 Fig. 1 Fig. 6

Claims (3)

[Claims] (1) Synthetic resin sheet material, synthetic resin foam material,
A synthetic resin hollow core material is stacked to form a three-part integrated laminate plate, and the laminate plate is welded and fused along the outer periphery of the inner panel formed in various parts of the interior of the car, and the curved surface is A method for manufacturing an interior material for a vehicle, characterized by being processed. (2) Curved surface processing methods include the above-mentioned welding, **
In the process, rattan pressing is performed by the same elder welding at a location corresponding to the curved shape of the inner panel of the automobile, and the cough muscle pressing portion is used as a hinge to adapt to the curved surface. 1. The method for manufacturing an interior interior material for an automobile according to item 1. (3) As a curved machining method, the laminate plate is placed in the mold of a vacuum molding mold in which a required curved surface has been formed, and the curved surface is formed by vacuum suction. 2. The method for manufacturing an interior interior material for an automobile according to item 2.