JP2001098831A - Hinge structure for molded board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance usability of a hinge structure of the molded board with an opening/closing function such as a floor board, a rear parcel shelf, etc., by increasing the support strength of the hinge, enhancing the quality of the appearance performance and further, making both faces of the hinge foldable from the basal part thereof. SOLUTION: The molded board 10 is made of a laminate body constituted of a core material 11 and the outermost layer material 12. A hinge 20 formed linearly in the core material 11 along a folding line, and constituted of a supporting projected stripe 21, recessed grooves 22 hollowed at both sides of the stripe 21, narrow grooves 23 forming the center of the hinge formed near the supporting projected stripe 21 of the recessed groove 22. The stripe 21 can be housed in the recessed grooves 22 and it becomes possible to fold the mutual rear faces of the core material 11 by setting largely the width W of the recessed groove 22 to the thickness d of the supporting projected stripe 21.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a molded board such as a floor board and, more particularly, to a hinge structure of a molded board which can be folded on both sides and which is excellent in the appearance of the hinge.

[0002]

2. Description of the Related Art For example, in a hatchback type vehicle, a storage recess for storing spare tires and the like is often provided on a floor surface of a luggage room between a rear seat and a back door. A covering floorboard is installed.

[0003] Fig. 8 shows a floorboard 1, which is formed by attaching a skin material 3 to the surface of a core material 2 having shape retention properties.
The polypropylene resin mixed with wood powder is extruded into a sheet shape by a T-die extruder, and the sheet material is heated and softened and then cold-pressed to form the core material 2 into a required shape. At the time of molding, the skin material 3 made of a cloth, a nonwoven fabric, a resin sheet or the like is press-integrated.

[0004] In consideration of ease of use, the floorboard 1 is provided with a hinge portion 4.
As shown in the enlarged view of FIG. 9, two rows of narrow grooves 5 a and 5 b are provided, and the operation of accommodating the floor board 1 is, as shown in FIG. By stacking the product surface sides on top of each other, the product can be stored in a storage space in a folded state.

[0005]

As described above, the conventional floorboard 1 is in a flat state as shown in FIG. In the above, since the support part 6 supporting the floor board 1 and the hinge part 4 are not in contact with each other and are in a floating state, sufficient supporting strength against the external force F cannot be obtained, and wrinkles or It has been pointed out that it is easily deformed.

Further, in order to accommodate the floorboard 1 due to the shape of the hinge portion 4, as shown in FIG.
Folding operation to overlap product back side is not possible,
If you accidentally try to fold the back sides together,
There are disadvantages such as breakage of the hinge portion 4 and restrictions on the folding direction at the time of folding and accommodation are not preferable in terms of usability.

The present invention has been made in view of such circumstances, and provides a sufficient supporting strength of the hinge portion when used in a flat shape, without causing wrinkles or deformation, and improving the design. An object of the present invention is to provide a hinge part structure of a board molded product which is excellent and can be folded in both directions without being restricted by a folding direction at the time of folding accommodation.

[0008]

In order to achieve the above object, an invention according to claim 1 of the present application comprises a laminated body of a core material and a skin material, and includes a hinge portion provided on the core material. A hinge portion structure of a foldable board molded product, wherein the hinge portion is provided along a broken line, and a supporting ridge that comes into contact with a support component surface that supports the board molded product, and both sides of the supporting ridge. And a thin groove formed near the supporting ridge of each of the concave grooves and serving as a hinge center.

Here, as the core material, a polyolefin resin mixed with a filler is preferable because it is necessary to have excellent shape retention and to form a thin hinge.
In consideration of moldability and the like, a polypropylene resin mixed with a filler such as wood powder, fiber, and talc is preferable.

As a method for molding the core material, a general-purpose molding method such as injection molding or cold press molding can be applied. However, in consideration of production efficiency, cold press molding which can integrally mold the core material and the skin material is possible. Is suitable.

According to the first aspect of the present invention,
Since the supporting ridge forming a part of the hinge portion is in contact with the supporting component, even if an external force is applied to the hinge portion from the product surface side, no wrinkling or deformation occurs.

The invention described in claim 2 of the present application is characterized in that the width of the concave groove is set to be larger than the thickness of the supporting ridge.

According to the second aspect of the present invention,
Since the width of the groove is set to be larger than the thickness of the supporting ridge, not only can the board molded product be folded by overlapping the product front side, but also the groove can be folded when the product back side is folded. Since the supporting ridge is accommodated in the inside, the back sides can be overlapped and folded, and double-sided folding can be performed.

Next, the invention described in claim 3 of the present application is:
The flange of the support component supporting the board molded product is provided with a fitting portion that fits with the hinge portion of the board molded product.

According to the third aspect of the present invention,
As for the hinge portion of the board molded product, since the support component is provided with a fitting portion having a shape that fits with the hinge portion, the support strength of the hinge portion in the board molded product can be further enhanced.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, an embodiment of a hinge structure for a molded boat according to the present invention will be described with reference to a floor board installed in a luggage room of a vehicle.

FIG. 1 is an external view showing the interior of a luggage room of a vehicle on which a floorboard is installed, FIG. 2 is a perspective view showing a floorboard according to the present invention, FIG. 3 is a cross-sectional view showing a main structure of the floorboard, 4 and 5 are explanatory views showing a state in which the floorboard is folded in both directions. 6 and 7
FIG. 6 shows another embodiment of the present invention. FIG. 6 is a perspective view showing a relationship between a floorboard and a support component, and FIG. 7 is a sectional view showing a relationship between the floorboard and a support component.

1 to 5, a spare tire storage recess 3 for storing spare tires and the like is provided on the floor surface of a luggage room 2 provided on the rear side of the rear seat 1.
Is provided, and a floor board 10 is provided to cover the upper opening of the storage recess 3.

As shown in FIGS. 2 and 3, the floorboard 10 comprises a flat core material 11 having shape-retaining properties, and a skin material 12 integrally attached to the surface of the core material 11. Hinge part 2 so that it can be folded into two parts.
0 is provided.

More specifically, the core material 11 is formed by extruding polypropylene mixed with wood powder into a sheet shape by a T-die extruder, subjecting the sheet material to heat softening treatment, and then forming it into a required shape by cold press molding. When the core material 11 is formed, the hinge portion 20 is also integrally formed. Further, the skin material 12 is appropriately selected from a cloth, a nonwoven fabric, a synthetic resin sheet, or the like, and the skin material 12 is integrally adhered when the core material 11 is pressed.

Then, the floor board 10 according to the present invention
Can obtain a good supporting strength in the hinge portion 20, without wrinkles or deformation near the hinge portion 20, can maintain a good external appearance for a long time, and not in one direction The feature is that it can be folded in both directions, enhancing usability.

That is, the hinge portion 20 has a supporting ridge 21 extending along the broken line, a concave groove 22 formed on both sides of the supporting ridge 21, and a concave groove 2 so as to be the center of the hinge.
2 and a narrow groove 23 provided near the supporting ridge 21.

Further, regarding the dimensional relationship between the supporting ridges 21 and the concave grooves 22, the thickness d of the supporting ridges 21 is equal to the thickness d1 of the core material 11.
And the supporting component 3 for supporting the floorboard 10
0, and the width w of the groove 22 is equal to the width of the support ridge 2.
1 is set to be larger than the thickness d.

Therefore, the floor board 1 is placed on the support component 30.
In the state where the support member 30 is placed in a flat shape, the tip surface 21a of the support ridge 21 is always in contact with the support component 30, so that even if an external force shown in F in FIG.
Also, no wrinkles are generated on the skin material 12,
Strong support strength is obtained, and appearance can be maintained well over a long period of time.

Then, the floor board 10 according to the present invention
As shown in FIG. 4, it is possible to smoothly fold the skin materials 12 so as to overlap each other as in the conventional example, and to fold the back surfaces of the core materials 11 together as shown in FIG. Alternatively, it can be folded in the opposite direction.

This means that the width w of the concave groove 22 is not
This is because by setting the thickness to be larger than the thickness d of 1, the supporting ridge 21 can be accommodated in the concave groove 22.

Therefore, when removing the spare tire and taking out the floor board 10 and storing it in the storage space, the floor board 10 can be folded in both directions as shown in FIGS. It does not damage the hinge part 20 by being folded in the opposite direction, and is excellent in accommodation operability and durability.

Next, FIG. 6 and FIG.
This shows another embodiment of the support component 30 that supports the floor board 1.
A fitting portion 32 that fits with the hinge portion 20 formed at 0 is formed.

Accordingly, when the floor board 10 is placed on the flange 31 of the support component 30, the hinge portion 20 of the floor board 10 is fitted into the fitting portion 32, thereby supporting the hinge portion 20 on the floor board 10. Strength can be further enhanced.

The embodiment described above is an embodiment applied to the floor board 10 of the luggage room 2, but if it is a board molded product having a hinge function, the use of the rear parcel shelf, various lids and the like is particularly limited. Not something.

[0031]

As described above, according to the hinge structure for a board molded product according to the present invention, the support strength of the hinge part can be enhanced, the appearance of the hinge part can be maintained well, and the hinge can be maintained. Since a use form that can be folded in both directions based on the portion is possible, there is an effect that usability can be enhanced.

[Brief description of the drawings]

FIG. 1 is an external view of a luggage room showing an embodiment in which the present invention is applied to a floorboard.

FIG. 2 is a perspective view showing a floorboard according to one embodiment of the present invention.

FIG. 3 is a sectional view taken along line III-III in FIG. 2;

FIG. 4 is an explanatory view showing a state where the product surface side of the floorboard shown in FIG. 2 is overlapped and folded.

FIG. 5 is an explanatory diagram showing a state in which the back surfaces of the floor boards shown in FIG. 2 are overlapped and folded.

FIG. 6 is an explanatory diagram showing a relationship between a floor board and a support component to which the present invention is applied.

FIG. 7 is a cross-sectional view showing a relationship between the floor board and the support components shown in FIG.

FIG. 8 is a perspective view showing a conventional floorboard.

9 is a sectional view taken along line IX-IX in FIG.

FIG. 10 is an explanatory view showing a folded state of a conventional floorboard.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Rear seat 2 Luggage room 3 Spare tire storage recess 10 Floor board 11 Core material 12 Skin material 20 Hinge part 21 Supporting ridge 22 Depression groove 23 Narrow groove 30 Supporting part 32 Fitting part d Thickness of supporting ridge w Width of concave groove

Claims (3)

[Claims] 1. A hinge (2) comprising a laminate of a core material (11) and a skin material (12), provided on a core material (11).
0) A hinge structure of a board molded product foldable through (0), wherein the hinge portion (20) is provided along a folding line and has a surface of a support component (30) for supporting the board molded product (10). A supporting ridge (21) to be in contact with, a concave groove (22) formed on both sides of the supporting ridge (21), and a concave groove (22) formed near the supporting ridge (21); A hinge part structure for a board molded product, comprising a narrow groove (23) serving as a hinge center. 2. The hinge according to claim 1, wherein the width (w) of the groove (22) is set to be larger than the thickness (d) of the supporting ridge (21). Part structure. 3. A fitting part (32) for fitting to a hinge part (20) of the board molded product (10) on a flange (31) of a support component (30) for supporting the board molded product (10).
The hinge structure of a board molded product according to claim 1 or 2, wherein a hinge is provided.