JP3086136U - Desks and chairs for school children - Google Patents

Abstract

(57) [Problem] To provide a desk and chair for schoolchildren that can be easily reused as a desk having no scratch on the top plate even if the top plate is scratched due to long-term use or the like. SOLUTION: At the upper ends of left and right support pipes 10,
A desk for a schoolchild with a top plate 30 detachably attached thereto via a bracket 20, wherein each of the left and right support pipes 10 has a horizontal bar-shaped upper end connecting portion at the upper end of the front foot portion 11 and the upper end of the rear foot portion 12. 13, the bracket 20 is formed in an L-shaped cross section with a screw through hole 21 a provided in an upright surface thereof, and is welded onto the upper end connecting portion 13 of each support pipe 10. The top plate 30 is surface-finished and painted on both upper and lower surfaces, and screw holes 31 are formed on the left and right side surfaces.
The screw 32 is screwed into the screw hole 31 of the bracket 20 and passed through the screw insertion hole 21a of the bracket 20, so that the screw 32 is fixed to the bracket 20.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a desk for school children used in schools and the like, and a chair used together with the desk.

[0002]

[Prior art]

 Conventionally, desks and chairs of this type have generally been constructed by bending and welding an iron pipe into a chair shape, and fixing a top plate, a back plate, a seat plate, etc., to the left and right front foot portions. A reinforcement pipe is welded to the lower part between them.

However, in the conventional desk, when the surface of the top plate is damaged due to long-term use or mischief of school children, it is necessary to purchase a new one again. Further, in a conventional desk or chair, since a reinforcing pipe is welded to a lower portion between left and right front feet, there is a problem that a schoolchild puts a foot and deteriorates a posture. Further, conventional desks and chairs are constructed using iron pipes, so that they have a large weight and have problems such as dragging and damaging the floor. Therefore, a desk that can easily repair the scratches on the top plate is required. However, it is necessary to devise to easily remove the scratches on the surface of the top plate. Also, desks and chairs that are lightweight and do not have a reinforcing pipe on the lower side between the left and right front feet are required. However, strength is inferior due to weight reduction, which is difficult.

[0004]

[Problems to be solved by the invention]

 The present invention has been made in view of the above-mentioned conventional circumstances, and the purpose thereof is to easily provide a desk having no scratches on the upper surface of the top plate even if the upper surface of the top plate is scratched due to long-term use or the like. It is an object of the present invention to provide desks and chairs for school children that can be reused and that are constructed to be robust and lightweight.

[0005]

[Means for Solving the Problems] The technical means of the present invention for solving the above-mentioned problems is as follows. In the desk of the first invention, the top plate can be attached to and detached from the upper ends of the left and right support pipes via a bracket. The left and right support pipes are an integral pipe in which the upper end of the front foot and the upper end of the rear foot are connected by a horizontal bar-shaped upper end connecting portion, and the bracket is The top plate is fixed on the connecting portion at the upper end of each support pipe, and the top and bottom surfaces are surface-finished and painted, and are screwed from the outside of the bracket.

[0006] Further, in the desk of the second invention, an opening for inserting a teaching material or the like is fixed between the upper ends of the left and right support pipes by a full weld in a case formed on the near side, and the left and right forefoot portions are fixed. A first horizontal reinforcing pipe is welded between each of the left and right rear foot portions, and each first reinforcing pipe is fully welded to a horizontal lower end corner of the container, and further left A second reinforcing pipe parallel to the first reinforcing pipe is welded to an upper side between the right forefoot parts, a lower side between the left and right forefoot parts is opened, and A hook member is provided so as to be detachable from the side, a base end of the hook member is inserted into the upper end connecting portion and welded, and each of the pipes is made of an aluminum alloy pipe material. In addition, the whole welding means that all of the contact portions are welded linearly.

In the chair of the third invention, a backrest plate and a seat plate are fixed between left and right support pipes each having a forefoot portion on a lower side, and a rear foot pipe is welded to each support pipe. In the chair, each of the support pipes is formed by bending a backrest fastening portion to which a backrest plate is fastened, a seat plate fastening portion to which a seat plate is fastened, and a forefoot portion from an integral pipe. Each of the rear foot pipes is fully welded at its upper end to the corresponding backrest fastening portion of each corresponding support pipe, the lower portions of the left and right front foot sections are opened, and each pipe is made of an aluminum alloy. It is made of pipe material.

[0008]

[Embodiment of the invention]

 Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 to 4 show examples of desks and chairs for school children according to the present invention. First, the desk A has a top plate 30 detachably mounted on upper ends of left and right support pipes 10, 10 via brackets 20, 20.

Each support pipe 10 is formed by bending a lightweight aluminum alloy pipe material, so that the upper end of the front foot 11 and the upper end of the rear foot 12 are connected by a horizontal bar-shaped upper end connecting part 13. It is formed in a substantially U-shape.

A rod-shaped lower reinforcing pipe 16 made of a pipe material of the same material as the support pipe 10 is provided between the lower end of the front foot 11 and the lower end of the rear foot 12 of each support pipe 10. Welded at each end.

A pipe material of the same material as the support pipe 10 is provided between the upper ends of the left and right forefoot portions 11 and 11 and between the upper ends of the rear foot portions 12 and 12 of the left and right support pipes 10. Is welded.

A storage case 40 having an opening 41 into which a teaching material or the like is inserted is formed between the upper ends of the left and right support pipes 10. The container 40 is formed by bending a lightweight aluminum alloy plate to form a substantially rectangular box having an open upper surface and a front surface of the hand, and a flange 42 (FIG. 2 and FIG. 4).

In the case 40, each of the left and right flanges 42, 42 is entirely welded to the upper surface of the upper end connecting portion 13 of the support pipe 10, and further, a horizontal lower end angle on the rear side (front side). The part is fully welded to the first reinforcement pipe 14 on the rear foot part 12 side, and the front lower horizontal corner is fully welded to the first reinforcement pipe 14 on the front foot part 11 side.

On the upper side of the support pipe 10 between the left and right forefoot portions 11, 11, a second reinforcement pipe 15 made of a pipe material of the same material as the support pipe 10 is arranged in parallel with the first reinforcement pipe 14. Welded to. In addition, the lower side between the left and right forefoot portions 11, 11 is in an open state without a reinforcing pipe or the like.

A hook member 50 is provided at a substantially central portion in the longitudinal direction of the upper end connecting portion 13 of each support pipe 10 so as to be disengaged from the outside.

The hook member 50 is fixed by penetrating a base end portion 51 into a hole formed inside the upper end connecting portion 13 and welding (see FIG. 4), and moving the hook portion 52 outward. It is suitable.

The bracket 20 is an angle-shaped member made of a lightweight aluminum alloy and having a substantially L-shaped cross section. The upright surface 21 has two screw through holes 21a, 21a formed therein. 4 is entirely welded to the upper part of the outer peripheral surface of the upper end connecting portion 13 of the support pipe 10, and the left and right brackets 20, 20 are arranged so as to face each other.

The top plate 30 is a wooden rectangular veneer whose upper and lower surfaces are surface-finished and varnished. A concave portion 30a (see FIG. 4) is formed on each of the left and right side surfaces of the top plate 30 so that the bracket 20 is fitted without projecting in the lateral direction. Two screw holes 31 1 and 31 corresponding to the insertion holes 21 a and 21 a are provided. In detail, the screw hole 31 has a bottomed hole formed on each side surface of the top plate 30, and a nut-shaped member into which the screw 32 can be screwed is fixed to the bottomed hole by fitting or screwing. It is fixed by means.

The top plate 30 having the above configuration is placed between the left and right brackets 20, and each screw 32 that has passed through the screw insertion hole 21 a of each bracket 20 from the outside is connected to each screw 32. By being screwed into the hole 31, it is fixed to the brackets 20,20.

Therefore, the top plate 30 can be easily removed by loosening the screws 32, and when the top plate 30 is removed, the upper and lower surfaces are turned upside down. Again, it is possible to fasten with each screw 32.

Next, the chair B will be described in detail. In this chair B, a backrest plate 70 and a seat plate 80 are fixed between left and right support pipes 60 and 60, and a rear foot pipe 90 is welded to each support pipe 60. Similarly to A, it is formed from a lightweight aluminum alloy pipe material.

Each of the support pipes 60 includes a backrest fixing portion 61 to which the backrest plate 70 is screwed, a seat plate fixing portion 62 to which the seat plate 80 is screwed, and a forefoot portion 63 integrated with each other. It is formed by bending.

Each rear foot pipe 90 has, at the upper end thereof, a welded portion 91 formed in a straight tubular shape that overlaps the backrest fastening portion 61 of the support pipe 60. The welded portion 91 is overlapped with the backrest fixing portion 61 and is entirely welded.

In the chair B having the above-described structure, the backrest fastening portion 61 of the support pipe 60 and the welding portion 91 of the rear foot pipe 90 are completely welded, and the backrest plate 70 is fastened to the backrest fastening portion 61. Since the strength is maintained by fastening the seat plate 80 to the seat plate fastening portion 62, the lower part of the left and right forefoot portions 63, 63 is in an open state without a reinforcing pipe or the like. .

[0025]

[Effect of the invention]

 Since the present invention is configured as described above, it has the following effects. According to the desk of the first invention, since the top and bottom surfaces of the top plate are surface-finished and painted, if the top surface of the top plate is damaged due to long-term use, etc., the top plate is turned upside down. Thus, the desk can be easily reused as a desk with no scratch on the top surface. Furthermore, since the screw is fixed from the outside of the bracket, the head of the screw is not exposed on the top plate. Further, according to the desk of the second invention, the front, rear, left and right ends of the storage box are fixed to the first reinforcing pipe by full welding, and the second reinforcing pipe is welded to the upper side between the left and right forefoot parts. Because of its robust structure, sufficient strength can be maintained without the need for reinforcing pipes below the left and right support pipes. In addition, since the lower part between the left and right forefoot parts is open, there is no need for schoolchildren to lean on their feet as in the prior art, and they can easily be placed under the desk from the front in the event of a disaster such as an earthquake. You can dive. In addition, since each pipe is made of aluminum alloy pipe material, it is lightweight, easy to carry and move, and has excellent corrosion resistance and recyclability. In addition, according to the chair of the third invention, the backrest plate and the seat plate are fixed between the left and right support pipes, and the rear foot pipes are fixed to each support pipe by full welding. Sufficient strength can be maintained without providing a reinforcing pipe. In addition, since the lower portions of the left and right forefoot portions are open, there is no possibility that schoolchildren would lean on their feet to deteriorate their posture as in the prior art. In addition, since each pipe is made of aluminum alloy pipe material, it is lightweight, easy to carry and move, and has excellent corrosion resistance and recyclability.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of a desk and a chair for school children according to the present invention from the rear side.

FIG. 2 is a front view showing the main part of the desk for school children according to the present invention.

FIG. 3 is a right side view showing a main part of the desk.

FIG. 4 is an enlarged sectional view of a portion IV in FIG. 2;

[Explanation of symbols]

 Support pipe 10 Bracket 20 Top plate 30 Forefoot part 11 Rearfoot part 12 Upper end connecting part 13 Screw insertion hole 21a Screw hole 31 Screw 32

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Minoru Nagahara 2-10-35, Nagayama, Asahikawa-shi, Hokkaido Asahikawa Furniture Industry Cooperative Association (72) Kazuo Hasegawa 6-90, Nagayamacho, Asahikawa-shi, Hokkaido (72) Inventor: Yuichi Sato 6-13-10 Nagayamacho, Asahikawa-shi, Hokkaido Kitakai Dunlo Co., Ltd.

Claims (3)

[Utility model registration claims] 1. A desk for a schoolchild having a top plate detachably mounted on upper ends of left and right support pipes via brackets, wherein each of the left and right support pipes is an upper end of a front foot and a rear foot. The bracket is fixed on the upper end connecting portion of each of the support pipes, and the upper and lower surfaces of the top plate are surface-finished and painted. And a desk for school children, which is screwed from the outside of the bracket. 2. A case in which an opening for inserting a teaching material or the like is formed between the upper ends of the left and right support pipes is fixed on the front side by full welding. A first horizontal reinforcing pipe is welded between each of the first and second vertical reinforcing pipes, and each first reinforcing pipe is fully welded to a horizontal lower end corner of the container. While welding the second reinforcing pipe parallel to the one reinforcing pipe, the lower side between the left and right forefoot portions is opened, and the upper end connecting portion is provided with a hook member detachably from the outer side, The desk according to claim 1, wherein a base end of the hook member is inserted into and welded to the upper end connecting portion, and each of the pipes is made of an aluminum alloy pipe material. 3. A chair in which a backrest plate and a seat plate are fixed between left and right support pipes each having a front foot portion on a lower side, and a rear foot pipe is welded to each support pipe. The pipe is formed by bending a backrest fastening portion to which the backrest plate is fastened, a seat plate fastening portion to which the seat plate is fastened, and a forefoot portion from an integral pipe. The pipes are characterized in that the upper ends are fully welded to the corresponding backrest fastening portions of the corresponding support pipes, the lower portions of the left and right forefoot portions are opened, and the pipes are made of aluminum alloy pipe material. Chair for school children.