JPH0121791Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention uses the side plates, shelf boards, etc. of a unit shelf to form a core body made of suitable paper, synthetic resin, or wood-based material in plywood or the like, and to form V-shaped grooves or the like. The present invention relates to a plate-shaped body which is clamped and fixed between surface plates with closed grooves and the like.

In the case of conventional shelf boards, etc. that use wood boards as they are, they are prone to cracking and warping, which are the peculiar faults of wood, and in the case of thick boards, they have drawbacks such as being heavy. was. In addition, those using steel plates or the like have disadvantages in terms of texture, etc., and are particularly unsuitable for wooden houses.

The present invention was developed in view of the above circumstances; it is lightweight, has high compressive strength, especially against bending and torsion, and has an appearance that is not much different from ordinary wood boards, and its shape and thickness can be easily changed according to its purpose. The object of the present invention is to provide a plate-shaped body which can be processed and has good workability at low cost and in large quantities.

Hereinafter, the present invention will be explained in detail according to embodiments shown in the drawings.

FIG. 1 is a partially cutaway perspective view of an embodiment of the present invention, and FIG. 2 is a cross-sectional view thereof.

In FIG. 1, 1 is a core formed by laminating the flutes of cardboard sheets so that they are juxtaposed in the thickness (t) direction, and is disposed between the top plates 2, 2. fixed in one piece. That is, each flute of the corrugated cardboard sheet constituting the core body 1 is formed by connecting cylindrical members as a whole, and is fixed such that the ends of the cylindrical members face the inner surfaces of the top plates 2, 2.

On the other hand, to explain the surface board 2, first, as shown in FIG. A clamping sheet 4 such as a nonwoven fabric made of synthetic resin fibers is attached, and a covering material 5 such as a thin veneer of natural wood with a thickness of about 0.02 mm is further attached to the surface of the clamping sheet 4. That is, the substrate 3
The clamping sheet 4 is sandwiched between the mounting material 5 and the mounting material 5 and is bonded with adhesive.

As shown in FIG. 3, a cross section V is formed on the substrate 3 at intervals corresponding to the thickness (t) and width L of the target plate-shaped body, so as to reach the clamping sheet 4 but not damage it. A plurality of letter-shaped bending grooves 6 are provided in parallel in the longitudinal direction. The bending groove 6 is formed using a grooving blade such as a circular saw or a cutter having a saw blade having a predetermined cutting edge angle, and the angle (θ) formed by the groove wall of the bending groove 6 is In the embodiment, the angle is approximately 90°.

Thereafter, both the upper and lower sides of the core body 1, that is, the tip of the flute of the cardboard sheet forming the core body 1, are arranged and fixed so as to abut against the substrate 3 side of the surface plate 2, as shown in FIG. By bending the clamping sheet 4 and the facing material 5 so as to close the bending groove 6 formed in the substrate 3 as shown in FIG. A plate-like body whose outer surface is covered with a covering material 5 as shown in FIG. 1 is completed.

Incidentally, the surface plate 2 is not limited to the above embodiment, and various modifications can be made.

FIG. 5 is a partially cutaway perspective view of a second embodiment which is a modification of the above embodiment, and FIG. 6 is a sectional view thereof.
1' is the thickness (t) of each flute of the cardboard sheet
Each core body 1' is arranged between face plates 2', and the face plate 2' has an arcuate edge 7 formed on its front surface. has been done. As shown in FIG. 7, the surface plate 2' uses a clamping sheet 4' clamped between a substrate 3' and a facing material 5' such as a thin veneer of natural wood, as in the previous embodiment. As shown in FIG. 7, a large number of narrow grooves 8 are longitudinally formed at appropriate locations on the substrate 3' where the arcuate edge 7 is to be formed, so as to reach the surface of the clamping sheet 4' without damaging it. The bending grooves 6' are also parallel to each other, as in the previous embodiment.

As shown in FIGS. 6 and 8, the core body 1' is arranged and fixed on the surface of the substrate 3', and a columnar core body made of a wood-based material has an arcuate portion 9 formed in a part thereof. 1′
a and a columnar core 1'b with a rectangular cross section are also arranged and fixed, and the thin grooves 8 are filled with adhesive to form the columnar core 1'.
If the thin groove 8 is closed along with the bending groove 6' along the arcuate portion 9 of a, the arcuate edge 7 will be formed in the part shown in FIGS. 5 and 6. The formed plate-like body is completed. Note that this columnar core may not be used in some cases.

FIG. 9 is a sectional view illustrating the manufacturing process of a third embodiment, which is a modification of the above embodiment. 1″a is plywood,
It is a flat core body with a square cross section made of particle board, hardboard, etc., and 1"b is a columnar core body with a square cross section made of wood. 2" is a surface plate, and the surface plate 2'' As shown in FIG. 9, bending grooves 6'', 6'' are arranged in a W-shape on the substrate 3'', and the bending grooves 6'', 6'' are closed to form a so-called chamfering process. The flat core body 1''a and the columnar core body 1''b are attached to the surface plate 2''.
is in contact with the substrate 3'' and is fixed integrally with the substrate 3''.

Although the columnar cores 1'b, 1''b are arranged and fixed in the longitudinal direction in the above embodiment, they may be arranged and fixed in the width direction.When used as side plates of a shelf, the columnar The shelf holder may be fixed to the core body.

In addition, cylindrical paper tubes with a circular cross section made of chip balls or yellow balls are cut into appropriate lengths.
It may be used in place of the core of the embodiment described above, or may be used in combination with the core of the embodiment described above. Alternatively, the core may be formed by forming cardboard into a hexagonal tube shape and connecting the hexagonal tubes in a honeycomb shape. Note that all of these core bodies are made of a substantially cylindrical material formed in a substantially cylindrical shape,
When the core bodies are arranged and fixed on the surface plate, the core bodies are arranged side by side in the thickness direction and fixed so that the cylindrical tip thereof faces the inside of the surface plate.

Since the present invention is constructed as described above, it has a high compressive strength, especially strength against bending and torsion, and is suitable for use as shelf boards for unit shelves.Since the core body is covered with a surface plate and cannot be seen from the outside, it can be used as a waste material. Various materials can be used, and resources can be saved and product costs can be reduced. In addition, since there are many hollow parts, it is possible to reduce the weight, and furthermore, the shape and thickness can be changed in various ways depending on the purpose.
It is also easy to saw and has good workability, making it extremely convenient.

Moreover, since the surface can use a decorative thin veneer of natural wood as a facing material, it has a luxurious and beautiful appearance similar to that of natural wood, which is extremely effective in modern times where high-quality natural wood is scarce. Furthermore, since the top plate is used by sandwiching a flexible sheet between the substrate and the facing material, the holding sheet acts as a cushioning material, preventing the irregularities of the board from appearing on the outer surface, and preventing the surface plate from appearing on the outside surface. No wrinkles or tears.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway perspective view of an embodiment of the present invention, Fig. 2 is a sectional view thereof, Fig. 3 is a perspective view of the surface plate in the unfolded state, Fig. 4 is a manufacturing process explanatory diagram, Fig. 5 is a partially cutaway perspective view of the second embodiment, Fig. 6 is a sectional view of the second embodiment, and Fig. 7 is a partially cutaway perspective view of the second embodiment.
A cross-sectional view of the surface plate of the example in an expanded state,
FIG. 8 is a diagram illustrating the manufacturing process of the second embodiment, and FIG. 9 is a sectional view illustrating the manufacturing process of the third embodiment. 1, 1', 1'a, 1'b, 1''a, 1''b... core body, 2, 2', 2''... surface plate, 3, 3', 3''...
Substrate, 4, 4'... Clipping sheet, 5, 5'... Covering material, 6, 6', 6''... Bending groove, 7... Arc-shaped edge, 8... Thin groove, 9... Arc-shaped part.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A fastening sheet made of strong and flexible non-woven fabric is pasted on one surface of a board made of a wood-based material such as plywood, particle board, hardboard, etc., and the fastening sheet is A facing material made of a thin veneer is pasted on the surface of the sheet, and a bending groove and/or V-shaped cross section that reaches the clamping sheet from the opposite surface of the substrate but does not damage it.
It is formed by a surface plate having thin grooves arranged parallel to each other in the longitudinal direction, and a core body made of a substantially cylindrical material made of paper, and the core body is juxtaposed in the thickness direction, and the tip of the core body is arranged parallel to the surface plate. a core arranged and fixed on the surface plate so as to face each other inwardly, the core body and the surface plate being integrally fixed by closing the bending groove and/or narrow groove of the surface plate; A plate-like body with the body as its core. 2. A plate-like body having the core described in claim 1 of the utility model registration claim, wherein the facing material is a thin veneer of natural wood. 3. A plate-like body having a core body according to claim 1 or 2 of the utility model registration claim, wherein the surface plate has an arcuate edge formed by closing narrow grooves. 4. The core body is formed by stacking corrugated cardboard sheets so that each flute is juxtaposed in the thickness direction.
A plate-shaped body whose core is the core body described in the section. 5. A plate-shaped body having the core body as set forth in claim 1, 2, or 3 of the utility model registration claim, wherein the core body is a paper tube. 6. The core body is formed by hexagonal tubular members connected in a honeycomb shape, according to claims 1 and 2 of the utility model registration claims.
A plate-shaped body having the core described in item 1 or 3 as a core.