JP3100180U - Cardboard desk and chair - Google Patents

Abstract

An inexpensive and recyclable cardboard desk and chair are provided.
[Solution]
The four upright wall portions have adhesive portions at both ends and are developed right and left, and a side wall portion having a continuous upper surface portion above or below every other upright wall portion, and a folded portion outside the four sides of the zenith portion. It is a cardboard desk that can be combined with a continuous top plate part, and this desk stands upright with the adhesive part adhered and the center of the upright wall part where the upper surface part is not provided is bent inward The upper part was folded back and bent into a notch formed above the center of the upright wall part to form a hanging piece, and the zenith part of the top plate was placed on the upper part and bent. A corrugated cardboard desk characterized in that a folded portion located on an upright wall portion is folded and inserted into a cut formed at an outer end of a hanging piece, and another folded portion is folded back on an upper portion of the corresponding upstanding wall portion.
[Selection diagram] Fig. 1

Description

The present invention mainly relates to a desk and a chair made of cardboard for an infant.

Cardboard is inexpensive and recyclable, so if it could be used to make a desk or chair, it would be environmentally friendly and useful. In particular, desks and chairs for infants do not need to be full-fledged, and when they are in school, they are always disposed of instead of full-fledged ones. It can be said that there is. From such a viewpoint, some desks and the like made of cardboard have been proposed (Patent Documents 1 and 2).
Japanese Utility Model Publication No. 61-02136 Japanese Utility Model Publication No. 05-23086

The problem is the strength, but the one having a complicated structure or the one using many components (Patent Document 1) is not preferable because the price is high and the assembly is difficult. In particular, it must not be complicated for the infant to assemble himself. A material using a material other than cardboard to supplement the strength (Patent Document 2) cannot be said to be strictly made of cardboard.

The present invention solves such a problem, and provides a cardboard desk or the like having a sufficient strength despite having a simple structure with a small number of constituent pieces.

The four upright wall portions have adhesive portions at both ends and are spread out to the left and right, and a side wall portion with a continuous upper surface portion above or below every other upright wall portion, and a folded portion outside four sides of the zenith portion. It is a cardboard desk that can be combined with a continuous top plate part, and this desk stands upright with the adhesive part adhered and the center of the upright wall part where the upper surface part is not provided is bent inward The upper surface was folded back and bent into a notch formed above the center of the upright wall to form a hanging piece, and the zenith of the top plate was placed on the upper surface and bent. A corrugated cardboard desk characterized in that a folded portion located on an upright wall portion is folded and inserted into a cut formed at an outer end of a hanging piece, and another folded portion is folded back on an upper portion of the corresponding upstanding wall portion.

The corrugated board desk according to the present invention is composed of a small number of constituent pieces such as a side wall and a top plate. In addition, since each component is assembled by simple operations such as bonding, folding, and insertion, even an infant can be assembled under appropriate guidance. Furthermore, as for the weak side wall part, the opposite walls are bent inward, and the upper part has a folded part passing through the center as a reinforcing beam at the center. Holding.

FIG. 1 is an exploded view of a side wall 1 constituting a cardboard machine A (hereinafter referred to as a "desk") showing an example of the present invention. It has adhesive portions 3 at both ends and is developed right and left, and an upper surface portion 4 is formed continuously above or below every other upright wall portion 2. The side wall 1 is formed into a four-sided wall by bonding the bonding part 3 and bending a fold line 5 formed at a portion serving as a boundary of the upright wall. The bonding portion 3 may be glued using glue, but using a double-sided adhesive tape is more convenient because glue does not need to be prepared.

Then, when the fold line 6 formed at the boundary between the upper surface portion 4 and the upright wall portion 2 is bent, the upper surface portion 4 covers the upper side of the four-sided wall. A line 7 is formed, and a notch 8 is formed at an upper end at an appropriate interval. A fold line 9 is formed vertically at the center of the upright wall 2 where the upper surface 4 is not provided, and a cut 10 is formed at the upper end of the fold line 9.

3 to 6 are perspective views when assembling the desk A with the above-described side wall portion 1 and top plate portion 2. First, the folding line 9 of the upright wall portion 2 is bent inward (FIG. 3). The upper surface 4 bent at the fold line 6 is put on this, the fold line 7 is further bent, and the cut 8 is inserted into the cut 10 formed at the fold line 9 (FIG. 4). Since there are two pieces of the upper surface portion 4, both the upper surface portions 4 are in this state (FIG. 5). In this state, the upper end of the upper surface portion 4 (the end side of the folding line 7) constitutes a hanging piece 11 that hangs over the bent upright wall portion 2. In addition, a notch 12 cut from the outer end is formed at the end of the hanging piece 11.

FIG. 2A is an exploded view of the top plate portion 13. The top plate portion 13 also uses cardboard, but a zenith portion 14 having substantially the same dimensions as the upper surface portion 4, and four sides outside the zenith portion 14. The folded portion 16 is formed continuously through the folding line 15. The folded portion 16 (in the longitudinal direction) corresponding to the upright wall portion 2 that is not bent is provided with another sub-folding line 17 outside the folding line 15, and a cut 18 is formed at the center thereof from the outside. Is also provided. Then, the zenith part 14 is put on the upper surface part 4, the longitudinal folded part 16 is bent at the fold line 15, the sub-fold line 17 is further bent, and the cut 18 is cut into the hanging piece 11. 12 (FIG. 6). Then, the other folded portion 16 is folded back on the upper portion of the upright wall portion 2 to complete the assembly of the desk A. At this time, if the folded portion 16 is bonded to the upright wall portion 2, the folded portion 16 will be along the upright wall portion 2.

FIG. 2B is a development view showing another example of the top plate portion 13. In the present example, the folded portion 16 is provided only on the opposing side where the hanging piece 11 exists, and the other opposing side is provided. Is provided with only the zenith part 14 without the folded part 16. According to this, since only the two folded portions 16 need to be folded, assembly is simplified.

FIG. 7 is a side view of the chair B. Since the side wall 1 assembled as described above has a sufficient strength, it can be used as the chair B. In this case, the chair B does not have to be as large as the desk A, and may be small enough to be accommodated in the side wall portion 1. If an arch-shaped notch 19 through which the chair B can pass is formed in one of the upright wall portions 2 of the side wall portion 1, when the chair B is not used, the chair B is inserted from the notch 19, and the desk is inserted. A can accommodate a chair B (FIG. 8).

As described above, according to the present invention, it is possible to manufacture the desk at low cost with a small structure piece of the side wall and the top plate made of corrugated cardboard and a simple structure. Recyclable. Further, a chair can be manufactured with the configuration of the side wall portion. In addition, when assembling a desk or chair, simple operations such as bonding of adhesive parts, bending of fold lines, and insertion of cuts can be performed. Also.

In addition, the weaker standing wall is bent inward to increase the section modulus and increase the strength, and the upper part is suspended by hanging a hanging piece in the center, which becomes a reinforcing beam. Supplement strength. Furthermore, a chair can be assembled with a similar configuration and the chair can be stored on a desk, so that space can be omitted.

FIG. 2 is an exploded view of a side wall of the desk according to the present invention. FIG. 3 is an exploded view of the top plate constituting the desk according to the present invention. FIG. 4 is a perspective view showing a state in which the desk according to the present invention is assembled. FIG. 4 is a perspective view showing a state in which the desk according to the present invention is assembled. FIG. 4 is a perspective view showing a state in which the desk according to the present invention is assembled. FIG. 4 is a perspective view showing a state in which the desk according to the present invention is assembled. FIG. 3 is a side view of the chair according to the present invention. FIG. 3 is a cross-sectional view showing a state where the chair is stored in the desk according to the present invention.

Explanation of reference numerals

A Desk B Chair 1 Side wall 2 Standing wall 3 Glue allowance 4 Top surface 10 Cut 11 Hanging piece 12 Cut 13 Top plate 14 Zenith 16 Fold back 19 Notch

Claims (4)

The four upright wall portions have adhesive portions at both ends and are spread out to the left and right, and a side wall portion with a continuous upper surface portion above or below every other upright wall portion, and a folded portion outside four sides of the zenith portion. It is a cardboard desk that can be combined with a continuous top plate part, and this desk stands upright with the adhesive part adhered and the center of the upright wall part where the upper surface part is not provided is bent inward The upper part was folded back and bent into a notch formed above the center of the upright wall part to form a hanging piece, and the zenith part of the top plate was placed on the upper part and bent. A corrugated cardboard desk characterized in that a folded portion located on an upright wall portion is folded and inserted into a cut formed at an outer end of a hanging piece, and another folded portion is folded back on an upper portion of the corresponding upstanding wall portion. 2. The cardboard board desk according to claim 1, wherein the folded portion of the top plate portion is formed only on the side where the side wall portion forms the hanging piece. 3. The cardboard chair according to claim 1, wherein the assembled small side wall portion is used as a chair. The cardboard desk and chair according to any one of claims 1 to 3, wherein a cutout is formed in the upstanding wall portion of the side wall portion, and the chair is inserted from the notch and can be stored in the side wall portion.

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