JP2006223702A - Assembly set of desk/chair made of corrugated paper - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To propose an inexpensive assembly set of a desk/chair made of corrugated paper which is suitably used as a desk/chair set for a baby/infant. <P>SOLUTION: The assembly set 1 of a studying desk/chair is provided with: parts 2 for assembling the studying desk made of the corrugated paper; and parts 4 for assembling the chair. The parts 2 includes a folded plate 21, a top plate 23, a top plate reinforcing plate 25 and an inner plate 27. The parts 4 includes a folded plate 41, a seat plate 43 and a support plate 45. By folding the respective folded plates 21 and 41 into a U-shape and assembling the other parts to them, the studying desk 6 and the chair 8 can be assembled simply. The studying desk/chair for a baby/infant which is inexpensive and on which scribbling can be done freely is provided. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an assembly set capable of easily assembling a desk and a chair, and more particularly to an inexpensive cardboard desk / chair assembly set suitable for infants and the like.

  Various kinds of learning desks / chairs used by infants and the like have been proposed, but basically, a structure in which an element used by elementary school students is made slightly smaller is generally used.

  However, learning desks and chairs used by infants and the like have a short period of use and are contaminated by graffiti and the like, so it is desirable that they be inexpensive and disposable.

  In view of these points, an object of the present invention is to propose an assembly set of a cardboard desk / chair suitable for use particularly as a desk / chair set for infants.

  In order to solve the above problems, an assembly set of a desk assembled from a plurality of cardboard parts according to the present invention includes, as parts, a bent plate, a top plate, a top plate reinforcing plate, and an insole plate. Have.

  The folding plate includes a rectangular curtain plate portion and left and right rectangular side plate portions that are continuous on both sides of the curtain plate portion, and the boundary between the curtain plate portion and the left and right side plate portions has a predetermined direction in the same direction. There is a crease for folding at an angle. Further, at least one insertion / bending flap protrudes from the upper edge of the curtain plate portion and the upper edge of the left and right side plate portions, respectively, and a portion near the upper edge of the curtain plate portion and the left and right side plates. An insole board insertion groove extending along these upper end edges is formed in a portion close to the upper end edge in each of the parts.

  Further, the top plate reinforcing plate is inserted with the insertion / folding flaps formed on the upper edge of the side plate portions on both sides of the curtain plate portion at a predetermined angle along the fold line. A possible opening is formed. Each of these openings has a narrow opening portion through which the back side portion can pass through the insertion / bending flap, and the front side portion protrudes upward from the narrow opening portion. A wide opening portion having a depth and a width that can be folded and stored at a right angle.

  Furthermore, in the state where the side plate portions on both sides of the curtain plate portion are bent at a predetermined angle along the folds, the inserts that can be inserted into the insole plate insertion grooves formed on these are provided on the outer peripheral edge of the insole plate. A flap is formed.

  These parts can be assembled as follows. First, the folding plate is bent at a predetermined angle along the crease. Next, the insertion flap of the insole plate is inserted into each insole plate insertion groove of the curtain plate portion and the left and right side plate portions. After this, put the top plate reinforcement plate on the upper edge of the folding plate, insert each insertion / bending flap from the back side into each opening, fold each inserted insertion / bending flap and fold each wide opening Store in the part and fix it. Finally, the top plate is placed on the surface of the top plate reinforcing plate and bonded and fixed.

  Here, the folding plate includes a left and right folding plate having a symmetrical shape, at least one curtain plate reinforcing plate, at least one right plate reinforcing plate, and at least one left plate. It can be comprised from the reinforcement board.

  In this case, the left folded plate is divided into a left curtain plate portion having a shape corresponding to the left half of the curtain plate portion, a first left plate portion that is continuous with the outer edge, and a second plate that is continuous with the outer edge. The left side plate portion is folded in such a manner that the left side plate reinforcement plate is wrapped and adhered to the inner surface of the first left side plate portion, and the second left side plate portion is folded so as to wrap the left side reinforcement plate. What is necessary is just to laminate and adhere to the inner surface of the reinforcing plate.

  Similarly, the right folded plate also has a right curtain plate portion having a shape corresponding to the right half of the curtain plate portion, a first right plate portion that is continuous with the outer edge, and a second blade that is continuous with the outer edge. The right side plate portion is folded, and the second right side plate portion is folded so as to wrap the right side reinforcing plate in a state where the right side plate reinforcing plate is laminated and bonded to the inner surface of the first right side plate portion. What is necessary is just to laminate and adhere to the inner surface of the reinforcing plate.

  Then, the left and right folded plates are joined by laminating and bonding the curtain plate reinforcing plates to the inner surfaces of the left curtain plate portion and the right curtain plate portion with their inner edges abutted against each other. In this case, a single bent plate is formed.

  In order to increase the strength, the corrugated direction of the corrugated cardboard material of the left side plate reinforcing plate, the right side plate reinforcing plate and the curtain plate reinforcing plate is perpendicular to the left side bent plate and the right side bent plate. It is desirable to laminate and bond these.

  Next, the assembly set of a chair assembled from a plurality of cardboard parts according to the present invention includes, as parts, a folding plate, a seat plate, and a support plate for supporting the seat plate.

  The folded plate includes a back plate portion, a first left plate portion that is continuous with the left edge of the back plate portion, a second left plate portion that is continuous with the first left plate portion, and the back plate portion. A first right side plate portion that is continuous with the right side edge of the first right side plate portion, and a second right side plate portion that is continuous with the first right side plate portion.

  A left insertion groove and a right insertion groove cut upward from the lower edge are formed at positions near both ends of the lower edge of the back plate portion. Further, between the back plate portion and the first left side plate portion, and between the back plate portion and the first right side plate portion, the first left side plate portion and the first right side plate portion are bent toward the inner surface side thereof. Possible folds are formed.

  Further, a foldable portion is formed between the first and second left side plate portions so that the second left side plate portion can be folded against the inner surface of the first left side plate portion at regular intervals. Yes. Similarly, a foldable portion that can be folded is formed between the first and second right side plate portions so that the second right side plate portion faces the inner surface of the first right side plate portion at regular intervals. ing.

  Furthermore, a left insertion groove cut downward is formed at the upper edge of the second left side plate portion, and a left insertion portion that can be inserted into the left insertion groove formed in the back plate portion from the left side edge. Is protruding. Similarly, a right insertion groove cut downward is formed at the upper edge of the second right side plate portion, and a right insertion portion that can be inserted into the right insertion groove formed in the back plate portion from the right side edge. Is protruding.

  The support plate is connected to the rectangular top plate portion, the left and right edges of the top plate portion, and a rectangular left bent portion and a rectangular right bent portion that can be bent at right angles to the back side of the top plate portion. In addition to being continuous with the rear edge of the top plate portion, a rectangular rear bent portion is provided at a right angle on the back surface side of the top plate portion. The left and right edges of the rear bent portion are wide at the portion continuing to the top plate portion, and the other portions are narrow, and the left and right edge portions of the wide portion are the second left side plate portion and the second right side portion. Each can be inserted into a left insertion groove and a right insertion groove formed in the plate portion.

  Such parts are assembled as follows. First, the first left side plate portion and the second right side plate portion on both sides with respect to the back plate portion are bent at a predetermined angle, and the second left side plate portion and the second right side plate portion are respectively set to the first left side plate. It is made into the state folded so as to oppose the part and the first right side plate part. Further, the insertion portions of the second left side plate portion and the second right side plate portion are inserted and fixed from the front into the left and right insertion grooves of the back plate.

  Next, the support plate is in a state where the left and right bent portions and the rear bent portion are bent at a right angle with respect to the top plate portion. After the bent left and right bent portions of the support plate are inserted from above between the first and second left side plate portions in the folded state and between the first and second right side plate portions, and after being bent at the same time The left and right edge portions of the side plate portion are inserted into the left insertion groove and the right insertion groove formed in the second left side plate portion and the second right side plate portion, respectively. As a result, the support plate can be fixed to the bent plate. Finally, the seat plate is placed on the top plate portion of the support plate and fixed.

  Here, in order to increase the strength, the shapes corresponding to the inner surfaces of the back plate portion, the first left side plate portion, the second left side plate portion, the first right side plate portion and the second right side plate portion of the bent plate, respectively. The back plate reinforcing plate, the first left side plate reinforcing plate, the second left side plate reinforcing plate, the first right side plate reinforcing plate, and the second right side plate reinforcing plate are preferably bonded and fixed in advance.

  Further, it is desirable to set the corrugated direction of the corrugated cardboard material of each reinforcing plate to be orthogonal to the direction of the corrugated plate.

  Furthermore, in order to increase the strength of the seat plate, it is desirable to use a configuration in which the rectangular plate is folded in a state of wrapping the rectangular core plate.

  On the other hand, a cardboard desk / chair assembly set according to the present invention is a combination of a desk assembly set and a chair assembly set configured as described above.

  The desk and chair assembly set of the present invention is assembled by folding and assembling cardboard parts. Therefore, a disposable and inexpensive desk and chair can be realized. Therefore, it is particularly suitable as a learning desk / chair for infants that has a short period of use and is easily soiled by graffiti.

  Hereinafter, an embodiment of an assembly set of a learning desk / chair for infants to which the present invention is applied will be described with reference to the drawings.

  FIG. 1 is a component diagram showing parts included in an assembly set of a learning desk / chair according to the present embodiment, and FIGS. 2 and 3 are explanatory diagrams showing an assembly procedure of the learning desk and chair. The learning desk / chair assembly set 1 includes a cardboard learning desk part 2 and a chair part 4. The desk part 2 includes a folding plate 21, a top plate 23, a top plate reinforcing plate 25, and an insole plate 27, and the learning desk 6 is obtained by assembling them as shown in FIG. Further, the chair part 4 includes a folding plate 41, a seat plate 43, and a support plate 45 for supporting the seat plate. By assembling these as shown in FIG. can get.

(student desk)
The learning desk part 2 will be described. First, the folding plate 21 includes a rectangular curtain plate portion 211 and left and right rectangular side plate portions 212 and 213 continuous on both sides of the curtain plate portion 211. The curtain plate portion 211 and the left and right side plate portions. The boundaries of 212 and 213 are provided with fold lines 214 and 215 for folding at right angles to their inner surface side. Two insertion / bending flaps 216, 217, and 218 project from the upper edge of the curtain plate portion 211 and the upper edge of the left and right side plate portions 212 and 213, respectively. In addition, in the portion near the upper end edge of the curtain plate portion 211 and the portion near the upper end edge of each of the left and right side plate portions 212 and 213, the insole plate insertion grooves 219, 220 extending along these upper end edges, 221 are formed. The left and right side plate portions 212 and 213 are formed with openings 222 and 223 for placing a hand when the learning desk 6 is lifted. In this example, it is an opening having the outline of a bear's face.

  The top plate 23 and the top plate reinforcing plate 25 are of the same rectangular shape, the length is larger than the length of the curtain plate portion 211, and the width is larger than the lengths of the left and right side plate portions 212 and 213. large.

  The top plate reinforcing plate 25 has a rectangular opening 256 through which the insertion / bending flaps 216, 217, 218 formed at the upper edge of the curtain plate portion 211 and the left and right side plate portions 222, 223 can be inserted. 257, 258 are formed. Each of these openings 256 to 258 is a narrow opening portion 256a to 258a in which the back side portion can be inserted through the folding flaps 216 to 218, and the front side portion is a narrow opening portion. The wide opening portions 256b to 258b have a depth and a width that allow the insertion / bending flaps protruding upward from the right side to be folded and stored at right angles.

  Next, the insole board 27 has a rectangular shape, the length thereof is substantially the same as that of the curtain plate portion 211, and the width thereof is substantially the same as that of the left and right side plate portions 212 and 213. Insertion flaps 271, 272, and 273 that can be inserted into the insole plate insertion grooves 219 to 221 formed in the curtain plate portion 211 and the side plate portions 212 and 213 are formed on the outer peripheral edge of the insole plate 27. .

(Assembly procedure of learning desk)
The assembly procedure of these parts will be described with reference to FIG. First, as shown in FIG. 2 (a), the folding plate 21 is bent at right angles along the folds 213 and 214 toward the inner surface. In other words, it is bent into a U shape so that it can stand on its own. Next, as shown in FIG. 2B, the insertion flaps 271 to 273 of the insole plate 27 are inserted into the insole plate insertion grooves 219 to 221 of the curtain plate portion 211 and the left and right side plate portions 212 and 213, respectively.

  Thereafter, as shown in FIG. 2 (c), the top plate reinforcing plate 25 is placed on the upper edge of the bent plate 21 bent in a U-shape and inserted into the openings 256 to 258 from the back side. -Insert the folding flaps 216 to 218. Then, the inserted insertion / bending flaps 216 to 218 are bent, accommodated in the wide opening portions 256b to 258b, and bonded and fixed. Finally, as shown in FIG. 2 (d), the top plate 23 is placed on the surface of the top plate reinforcing plate 25, aligned, and bonded and fixed by an adhesive means such as a double-sided tape. As a result, the learning desk 6 is obtained.

(Structure of each part of the learning desk)
Here, as shown in FIG. 4, the folding plate 21 of this example includes a left-side folding plate 31 and a right-side folding plate 32 having a symmetrical shape, two curtain plate reinforcing plates 33A and 33B, and two sheets. The left side plate reinforcing plates 34A and 34B and the two right side plate reinforcing plates 35A and 35B are configured.

  The left folded plate 31 includes a left curtain plate portion 311 having a shape corresponding to the left half of the curtain plate portion 211, a first left plate portion 312 that is continuous with the outer edge, and a first plate that is continuous with the outer edge. 2 left side plate portion 313. In a state where the left side plate reinforcing plates 34A and 34B are laminated and adhered to the inner surface of the first left side plate portion 311, the second left side plate portion 312 is folded so as to wrap around the left side reinforcing plates 34A and 34B, and the inner left side plate The reinforcing plate 34B is laminated and adhered to the surface.

  Similarly, the right folding plate 32 is also connected to the right curtain plate portion 321 having a shape corresponding to the right half of the curtain plate portion 211, the first right plate portion 322 continuous to the outer edge, and the outer edge. The second right plate portion 323 is provided. In a state where the right side plate reinforcing plates 35A and 35B are laminated and bonded to the inner surface of the first right side plate portion 322, the second right side plate portion 323 is folded so as to wrap around the right side reinforcing plates 35A and 35B, and the inner right side plate The reinforcing plate 35B is laminated and bonded to the surface.

  Then, the left folding plate 31 and the right folding plate 32 are placed on the inner surface of the left curtain plate portion 311 and the right curtain plate portion 321 with their inner edges 31a and 32a butted against each other. , 33B are laminated and adhered. Thereby, both the bending plates 31 and 32 are connected, and the bending plate 21 of 1 sheet structure is comprised.

  Here, as shown in each part in FIG. 4A, the corrugated direction of the corrugated cardboard material of the left folding plate 31 and the right folding plate 32 is a horizontal direction. On the other hand, the wave direction of the corrugated cardboard material of the left side plate reinforcing plate 33A, the right side plate reinforcing plate 35A, and the curtain plate reinforcing plate 33A is the vertical direction. Further, the wave direction of the corrugated cardboard material of the inner left side plate reinforcing plate 33B, the right side plate reinforcing plate 35B, and the curtain plate reinforcing plate 33B is a horizontal direction. Thus, the strength of each part is strengthened in each direction by laminating and bonding the parts so that the directions of the wavefronts are orthogonal to each other.

  Next, FIG. 5 shows the top plate 23, the top plate reinforcing plate 25, and the insole plate 27. As shown in FIG. 5 (a), the top plate 23 is a rectangular plate made of a single cardboard.

  As shown in FIG. 5B, the top plate reinforcing plate 25 has a configuration in which two reinforcing plates 25A and 25B having the same shape are laminated and bonded. Narrow opening portions 256a to 258a are formed in the lower reinforcing plate 25B, and wide opening portions 256b to 258b are formed in the upper reinforcing plate 25A. In the state in which these are laminated and bonded, the wide openings 256b to 258b become rectangular concave portions each having a depth corresponding to one cardboard, and the insertion / bending flaps 216 to 218 are accommodated in the concave portions. The top plate 23 can be stacked in close contact with the surface of the plate reinforcing plate 25 without floating. Further, as shown in FIGS. 5A and 5B, the top plate 23 and the reinforcing plates 25A and 25B to be finally laminated are set so that the corrugated corrugated material is orthogonal to each other. Yes.

  As shown in FIG. 5C, the insole plate 27 is also configured by laminating and bonding two plates 27A and 27B having the same shape. In this case as well, the corrugated cardboard material is laminated so that the wave direction is orthogonal.

(Chair)
Next, the chair part 4 will be described. First, as shown in FIGS. 1 and 6, the bending plate 41 includes a back plate portion 411, a first left plate portion 412 that is continuous with the left edge of the back plate portion 411, and the first left plate portion. A second left side plate portion 413 that continues to the right side edge of the back plate portion 411, and a second right side plate portion 415 that continues to the first right side plate portion 414. And.

  Further, in order to increase the strength of the folding plate 41 of this configuration, the back plate portion 411, the first left side plate portion 412, the second left side plate portion 413, the first right side plate portion 414, and the second right side plate portion of the bent plate 41 are provided. A back plate reinforcing plate 51, a first left side plate reinforcing plate 52, a second left side plate reinforcing plate 53, a first right side plate reinforcing plate 54, and a second right side plate reinforcing plate 55 each having a corresponding shape are formed on the inner surface of 415. Are laminated and bonded.

  Furthermore, the corrugated direction of the corrugated cardboard material of the bent plate 41 is the horizontal direction, but the direction of the corrugated board of each of the reinforcing plates 51 to 55 is a horizontal direction orthogonal thereto, so as to increase the strength of each part. is there.

  A left insertion groove 416 and a right insertion groove 417 that are cut upward from the lower edge are formed at positions near both ends of the lower edge of the back plate portion 411. In this example, these grooves are formed in the back plate reinforcing plate 51. Further, between the back plate portion 411 and the first left side plate portion 412, and between the back plate portion 411 and the first right side plate portion 414, the first left side plate portion 412 and the first right side plate portion 414 are placed between them. Folds 418 and 419 that can be bent at right angles are formed on the inner surface side.

  Further, the second left side plate portion 413 is folded between the first left side plate portion 412 and the second left side plate portion 413 so that the second left side plate portion 413 faces the inner surface of the first left side plate portion 412 at regular intervals. A portion 421 is formed. Similarly, the second right side plate portion 415 can be folded between the first and second right side plate portions 414 and 415 so as to face the inner surface of the first right side plate portion 414 at regular intervals. A folding part 422 is formed.

  Further, a left insertion groove 423 cut downward is formed at the upper end edge of the second left side plate portion 413, and can be inserted into the left insertion groove 416 formed in the back plate portion 411 from the left side edge. A left insertion part 425 protrudes. Similarly, a right insertion groove 424 cut downward is formed at the upper edge of the second right side plate portion 415, and can be inserted into the right insertion groove 417 formed in the back plate portion 411 from the right side edge. A right insertion part 426 protrudes. In this example, these reinforcing plates 53 and 55 are also formed with these grooves 423 and 424 and insertion portions 425 and 426, respectively.

  As shown in FIGS. 1 and 6 (b), the folding plate 41 having this configuration is such that the left and right second left side plate portions 413 and the second right side plate portion 415 have inner sides around the folding portions 421 and 422, respectively. It is in a folded state.

  The left and right side plate portions 412 and 414 of the bent plate 41 and the reinforcing plates 52 and 54 are formed with openings 412a, 414a, 52a and 54a for carrying hands during carrying. Further, the back plate 411 and the reinforcing plate 51 are formed with openings 411a and 51a having the contour shape of a bear face for decoration.

  Next, as shown in FIG. 7A, the seat plate 43 has a structure in which an elongated rectangular surface plate 43B is bent so as to wrap around the thick rectangular core plate 43A, and in this state, the adhesive plates are bonded to each other. Yes. The core plate 43A is formed of a cardboard material having a structure with high out-of-plane rigidity.

  On the other hand, as shown in FIGS. 1 and 7B, the support plate 45 is continuous with the rectangular top plate portion 451 and the left and right edges of the top plate portion 451, and the back surface of the top plate portion 451. A rectangular left-side bent portion 452 and a rectangular right-side bent portion 453 that can be bent at a right angle to the side, and a rear edge of the top plate portion 451, and a rectangular shape at a right angle to the back side of the top plate portion 451 And a rear bent portion 454. The left and right edges of the rear bent portion 454 are wide at the portion continuing to the top plate portion 451 and the other portions are narrow, and the left and right edge portions 455 and 456 of the wide portion are the second left side plate. It can be inserted into the left insertion groove 423 and the right insertion groove 424 formed in the portion and the second right side plate portion, respectively.

(Assembly procedure of chair)
The assembly procedure of the chair 8 will be described with reference to FIG. First, as shown in FIG. 3A, the folding plate 41 is bent at a right angle with respect to the back plate portion 411 at the first left side plate portion 412 and the second right side plate portion 414 on both sides. Further, the second left side plate portion 413 and the second right side plate portion 415 are folded so as to face the first left side plate portion 412 and the first right side plate portion 414, respectively. Then, the insertion portions 425 and 426 formed in the second left side plate portion 413 and the reinforcing plate 53, the second right side plate portion 415 and the reinforcing plate 55, respectively, are inserted into the insertion grooves 416 formed in the back plate reinforcing plate 51. 417 is inserted from the front side and fixed.

  Next, as shown in FIG. 3B, the support plate 45 is in a state where the left and right bent portions 452, 453 and the rear bent portion 454 are bent at a right angle with respect to the top plate portion 451.

  Thereafter, as shown in FIG. 3C, the left and right bent portions 452 and 453 of the support plate 45 are folded between the first and second left side plate portions 412 and 413 in the folded state, and the first The first and second right side plate portions 414 and 415 are inserted from above. At the same time, the left and right edge portions 455 and 456 of the bent rear side plate portion 454 are respectively inserted into the second left side plate portion 413 and the reinforcing plate 53, and the second right side plate portion 415 and the reinforcing plate 54, respectively. Insert into the groove 423 and the right insertion groove 424. As a result, the support plate 45 is fixed to the bent plate 41 bent in a U-shape.

  Finally, as shown in FIG. 3D, after the seat plate 43 is placed on the top plate portion 451 of the support plate 45 and aligned, it is bonded and fixed. Thereby, the chair 8 is obtained.

It is a component diagram which shows the assembly set of the learning desk and chair to which this invention is applied. It is explanatory drawing which shows the assembly procedure of a learning desk. It is explanatory drawing which shows the assembly procedure of a chair. It is explanatory drawing which shows the structure of the bending board which is one of the parts of a learning desk. It is explanatory drawing which shows the top plate which is parts of a learning desk, a top plate reinforcement board, and an insole board. It is explanatory drawing which shows the structure of the bending board which is parts of a chair. It is explanatory drawing which shows the seat plate and support plate which are parts of a chair.

Explanation of symbols

1 learning desk / chair assembly set, 2 learning desk parts, 4 chair parts, 21 folding plate, 211 curtain plate portion, 212, 231 side plate portion, 214, 215 fold, 216-218 Flap for insertion and folding, 219 ˜221 insole insertion slot, 23 top plate, 25 top plate reinforcement plate, 256 to 258 opening, 256a to 258a narrow opening, 256b to 258b wide opening, 271 to 273 insertion flap, 31, 32 folding plate 33A, 33B, 34A, 34B, 35A, 35B Reinforcement plate, 41 Folding plate, 411 Back plate portion, 412, 413 Left side plate portion, 414, 415 Right side plate portion, 51-55 Reinforcement plate, 416, 417 Insertion groove, 418,419 Fold, 421,422 Folded part, 423,424 Insertion groove

Claims (7)

A desk assembly set for assembling a desk from a plurality of cardboard parts,
As parts, it has a bent plate, a top plate, a top plate reinforcing plate, and an insole plate,
The folding plate includes a rectangular curtain plate portion and left and right rectangular side plate portions continuous on both sides of the curtain plate portion, and in the same direction at the boundary between the curtain plate portion and the left and right side plate portions. There is a crease to bend at a predetermined angle,
At least one insertion / bending flap protrudes from the upper edge of the curtain plate part and the upper edge of the left and right side plate parts,
An insole plate insertion groove extending along these upper end edges is formed in a portion near the upper end edge of the curtain plate portion and in a portion near the upper end edge of each of the left and right side plate portions, respectively.
In the state where the side plate portions on both sides of the curtain plate portion are bent at a predetermined angle along the fold, the top plate reinforcing plate is inserted with insertion and folding flaps formed on the upper edge thereof. An opening that can be
Each of these openings is a narrow opening portion through which the back side portion can pass through the insertion / bending flap, and the front side portion protrudes upward from the narrow opening portion. It is considered as a wide opening with a depth and width that can be folded and stored at a right angle.
In the outer peripheral edge of the insole plate, the side plate portions on both sides of the curtain plate portion can be inserted into the insole plate insertion grooves formed on the side plate portions in a state where the side plate portions are bent at a predetermined angle along the folds. The flap is formed,
The folding plate is bent at a predetermined angle along the crease, the flaps for inserting the insole plate are inserted into the insole plate insertion grooves of the curtain plate portion and the left and right side plate portions, and the top plate reinforcing plate is bent plate Put each insertion / folding flap through each opening from the back side, and fold each inserted insertion / folding flap and store it in each wide opening and fix it. An assembly set of cardboard desks assembled by placing and fixing the top plate on the surface of the top plate reinforcing plate. In claim 1,
The bent plate is
A left-side folded plate and a right-side folded plate having a symmetrical shape;
At least one curtain reinforcing plate,
It is composed of at least one right side plate reinforcing plate and at least one left side plate reinforcing plate,
The left folded plate includes a left curtain plate portion having a shape corresponding to the left half of the curtain plate portion, a first left plate portion that is continuous with the outer edge, and a second left plate that is continuous with the outer edge. With a plate part,
In a state where the left side plate reinforcing plate is laminated and bonded to the inner surface of the first left side plate portion, the second left side plate portion is folded so as to wrap around the left side reinforcing plate, and the inner side of the left side plate reinforcing plate Laminated and bonded to the surface,
Similarly, the right folded plate has a right curtain plate portion having a shape corresponding to the right half of the curtain plate portion, a first right plate portion that is continuous with the outer edge, and a first curtain plate that is continuous with the outer edge. 2 with a right plate part,
In a state where the right side plate reinforcing plate is laminated and bonded to the inner surface of the first right side plate portion, the second right side plate portion is folded so as to wrap the right side reinforcing plate, and the inner side of the right side plate reinforcing plate Laminated and bonded to the surface,
The left folding plate and the right folding plate are joined by laminating and bonding the curtain plate reinforcing plates to the inner surfaces of the left curtain plate portion and the right curtain plate portion with their inner edges abutted against each other. An assembly set of cardboard desks. In claim 2,
The left side plate reinforcing plate, the right side plate reinforcing plate, and the curtain plate reinforcing plate are laminated and bonded to the left bent plate and the right bent plate so that the wave directions of the corrugated cardboard materials are orthogonal to each other. An assembly set of cardboard desks, characterized by A chair assembly set for assembling a chair from a plurality of cardboard parts,
As parts, it has a bent plate, a seat plate, and a support plate for supporting this seat plate,
The bent plate includes a back plate portion, a first left plate portion that is continuous with the left edge of the back plate portion, a second left plate portion that is continuous with the first left plate portion, and the back plate. A first right side plate portion that is continuous with the right edge of the portion, and a second right side plate portion that is continuous with the first right side plate portion,
In the vicinity of both ends of the lower end edge of the back plate portion, a left insertion groove and a right insertion groove cut upward from the lower end edge are formed,
Between the back plate portion and the first left side plate portion, and between the back plate portion and the first right side plate portion, the first left side plate portion and the first right side plate portion are arranged on the inner surface side. A foldable crease is formed on the
A foldable portion is formed between the first and second left side plate portions so that the second left side plate portion can be folded against the inner surface of the first left side plate portion at regular intervals. ,
Between the first and second right side plate portions, a foldable portion is formed that can be folded so that the second right side plate portion faces the inner surface of the first right side plate portion at regular intervals. ,
A left insertion groove that is cut downward is formed at the upper edge of the second left side plate portion, and a left insertion portion that can be inserted into the left insertion groove formed in the back plate portion protrudes from the left side edge. And
A right insertion groove cut downward is formed at the upper edge of the second right side plate portion, and a right insertion portion that can be inserted into the right insertion groove formed in the back plate portion protrudes from the right side edge. And
The support plate is continuous with the rectangular top plate portion and the left and right edges of the top plate portion, and is a rectangular left bent portion and a rectangular right bent portion that can be bent at right angles to the back surface side of the top plate portion. And the rear edge of the top plate portion, and a rectangular rear side bent portion at a right angle on the back side of the top plate portion,
The left and right edges of the rear bent portion are wide at the portion continuing to the top plate portion, and the other portions are narrow, and the left and right edge portions of the wide portion are the second left side plate portion and the second right side portion. It can be inserted into the left insertion groove and right insertion groove formed in the plate part,
The first left side plate part and the second right side plate part on both sides of the folded plate with respect to the back plate part are bent at a predetermined angle, and the second left side plate part and the second right side plate part are respectively bent to the first left side plate part and Fold it so as to face the first right side plate part, and insert and fix the insertion part of the second left side plate part and the second right side plate part from the front into the left side and right side insertion grooves of the back plate,
The support plate is in a state where the left and right bent portions and the rear bent portion are bent at a right angle with respect to the top plate portion,
Insert the folded left and right folded parts between the first and second left side plate parts in the folded state and between the first and second right side plate parts from above, and at the same time, Are attached to the bent plate by bending the support plate by inserting the edge portion of the support plate into the left insertion groove and the right insertion groove formed in the second left side plate portion and the second right side plate portion, respectively.
Next, an assembly set of cardboard chairs assembled by placing a seat plate on the top plate portion of the support plate and bonding and fixing it. In claim 4,
On the inner surface of the back plate portion, the first left side plate portion, the second left side plate portion, the first right side plate portion and the second right side plate portion of the bent plate, a corresponding back plate reinforcing plate, first left side plate The plate reinforcing plate, the second left side plate reinforcing plate, the first right side plate reinforcing plate and the second right side plate reinforcing plate are bonded and fixed, respectively.
An assembled set of cardboard chairs, wherein the corrugated direction of the corrugated cardboard material of each reinforcing plate is set to be orthogonal to the direction of the corrugated board. In claim 4 or 5,
An assembly set of cardboard chairs, wherein the seat plate has a configuration in which a rectangular plate is folded in a state of wrapping a rectangular core plate.   A cardboard desk / chair assembly set comprising a combination of the desk set according to any one of claims 1 to 3 and the chair set according to any one of claims 4 to 6. .

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