JPH0125076Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a corrugated cardboard interior material suitable for use in automobiles, interiors, etc.

In recent years, from the viewpoint of weight reduction or economic efficiency, ceiling panels made of corrugated cardboard have come to be used for the ceilings of automobiles. However, in order to form such a corrugated ceiling board, the corrugated cardboard base material must be bent into a desired shape to match the shape of the automobile roof frame, etc. This requires fairly large-scale equipment such as a mold press, which poses a cost problem, and it is desired that some kind of countermeasure be taken.

The purpose of this invention is to further improve the corrugated cardboard interior material used for car ceiling panels, etc., so that the molding process can be performed easily and reliably, the manufacturing cost can be significantly reduced, and it has sufficient strength. Moreover, the present invention provides a cardboard interior material that can be easily and reliably attached to the attached part, which will become clear from the detailed description below with reference to the drawings.

Figures 1 and 2 show an embodiment of the present invention as a molded ceiling for an automobile, and in these figures, reference numeral 1 indicates a shape whose side edges are bent downward to match the shape of the roof frame of the automobile. The formed corrugated board base material 2 is a skin material attached to the lower surface of this corrugated board base material 1, and this skin material 2 is formed into a sheet shape by laminating a PVC skin and a urethane foam.

Further, as is clear from FIG. 3, the corrugated cardboard base material 1 is a corrugated cardboard base material formed by interposing a corrugated center paper 5 between the upper and lower liner papers 3 and 4 and pasting them together in a laminated state. The cloth is cut into the desired shape and used. In addition, 6 in the figure is a core material made of wire, iron wire, or pipe material inserted into the corrugated board base material 1 as appropriate, and is inserted between the liner papers 3 and 4 in the length direction of the waves of the center paper 5 or across the waves. It is inserted like this. Of the plurality of core materials 6, the core materials 6 inserted into the front and rear ends of the corrugated cardboard base material 1 extend in the width direction at the bent edge of the corrugated cardboard base material, and from the bent edge toward the center. A portion extending in the front-rear direction is bent. In this case, when inserting the core material 6 across the waves of the core paper 5, as shown in FIG.
It is preferable to cut out a part of the center paper 5 in advance. Further, reference numeral 7 in the figure indicates an attachment hole drilled at a predetermined location of the upper liner paper 3, and the core material 6 is inserted through the attachment hole 7 in a direction transverse to the attachment hole 7. The molded ceiling is fixed to the roof of the automobile by means of a fixture (not shown) provided on the core material 6 through the mounting hole 7.

Now, the molded ceiling having the above-described configuration is molded in the following manner.

First, a skin material 2 is placed on the bottom side of a corrugated board base material 1 prepared in the required size from a long original corrugated board.
The cardboard base material 1 and the skin material 2 are then cut into the developed shape shown in FIG. 3. This cutting shape is determined according to the shape of the roof frame side of the automobile to which the molded ceiling is installed.
In this case, notches 9 are formed on both sides of the bent edges 8 provided at four side edges. This is so that each bent edge 8 can be easily bent during press molding using a press or the like, and it can also be easily joined to the adjacent bent edges 8 fitted on both sides thereof.

Further, the core material 6 is inserted into the cardboard base material 1 cut as described above at a desired position as appropriate. Then, in this state, pressing force is applied using a simple press machine to bend the bent edges 8 on the four sides downward, and press molding is performed into a desired state. That is, by bending each bent edge 8, the core material 6 inserted into the corrugated cardboard base material 1 will also be bent at the bent edge 8, and as a result, the entire molded ceiling will be in the desired shape. It becomes possible to hold.

The molded ceiling formed in this way (see FIGS. 1 and 2) has sufficient rigidity due to the presence of the core material 6, and also has sufficient rigidity due to the presence of the core material 6 and the mounting holes 7.
It can be easily and reliably attached to the roof side of an automobile by using the above, and the mounting tool for the attachment is not exposed on the skin material 1 side, which is advantageous from the viewpoint of aesthetics.

Note that the original corrugated board used for the above-mentioned molded ceiling etc. is not limited to one made of general paper material, but may be made of, for example, a synthetic resin material. Further, the core material 6 is fixed so that it does not slip out of the corrugated cardboard base material 1, for example, by using an adhesive or by crushing a predetermined portion of the corrugated cardboard base material 1 during press processing.

Further, in the above-mentioned embodiment, the case where the skin material 2 was also cut at the same time when the corrugated cardboard base material 1 was cut was explained, but the present invention is not limited to this.
The skin material 2 may be attached after the corrugated cardboard base material 1 is pressed and molded into a desired shape.

Furthermore, this invention is not limited to molded ceilings of automobiles.
It can be applied to general interior materials such as vehicles or rooms.

As explained above, according to the corrugated cardboard interior material according to the present invention, the corrugated cardboard base material is cut in advance by making incisions, the core material is inserted into the inside of the cardboard base material, and the core material is inserted and pressed to bend into the desired shape. As a result, the molding process can be performed easily and reliably, eliminating the need to forcibly bend the corrugated cardboard base material using large-scale equipment, and the molding cycle has been significantly shortened. , it can be easily and reliably installed on the side to be installed, and manufacturing costs are significantly reduced.
Its practical effects are significant.

It should be noted that the above description merely shows one embodiment of the present invention, and it will be obvious that various modifications and changes can be made without departing from the spirit of the present invention.

[Brief explanation of the drawing]

Figures 1 and 2 are a perspective view and a side sectional view showing an embodiment of the corrugated cardboard interior material according to the present invention as a molded ceiling for an automobile, and Figure 3 shows its unfolded state for explaining the molding method. FIG. 4 is a perspective view showing an example of a state in which the core material is inserted. In the figure, 1...Cardboard base material, 2...Skin material,
3, 4...liner paper, 5...corrugated center paper, 6...
Heart material, 7... Attachment hole, 8... Bent edge, 9... Notch.

Claims (1)

[Claims for Utility Model Registration] (1) In a corrugated cardboard interior material that is pressed and molded to match the shape of the part to be attached, the original corrugated cardboard material is cut into both sides of the bent edge of the interior material. At the same time, a plurality of core materials are appropriately inserted into the cut corrugated cardboard base material, and the core materials inserted into the front end or rear end of the corrugated cardboard base material are inserted into the bent edge of the corrugated cardboard base material. A part extending in the width direction and a part extending in the front-rear direction from the bent edge toward the center are bent, and the corrugated cardboard base material and core material are pressed and bent at the bent edge. A cardboard interior material characterized by: (2) The corrugated cardboard base material is composed of upper and lower liner papers and a corrugated center paper provided between the upper and lower liner papers, and an attachment hole is formed in the upper liner paper, and the core material is formed across the attachment hole. The corrugated cardboard interior material according to claim (1), characterized in that the interior material is inserted.