KR20190011916A - Plate assembling device of desk and chair and desk and chair using plate assembling device - Google Patents

Abstract

The present invention relates to a plate assembly device for a desk and a chair for children, which can shorten the assembling time of a desk and a chair for children, and can reduce the disassembly time of a desk and a chair through disassembly of wedges only during storage and transportation, and a desk and a chair for children using the plate assembly device. According to the present invention, a plate assembly device for a desk and a chair for children, which connects plates constituting the desk and chair, includes a horizontal or vertical elongated hole formed in a plate serving as both legs of the plates; a penetrating connecting plate formed to protrude outward from a connecting end of a plate connected and fixed to a plate serving as a leg of a desk or a chair and inserted into the elongated hole and having a wedge through hole formed therein; and a wedge penetrating through the wedge through-hole in a state where the penetrating connecting plate penetrates the elongated hole.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plate assembly apparatus for a children's chair,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a platform assembly apparatus for children's bookshelves and a panel assembly apparatus for the same, and more particularly, Which can reduce the disassembly time of a desk and a chair, by using only the desk and chair assembly apparatus, and to a prefabricated children's desk chair apparatus using the desk assembly apparatus.

Generally, in a kindergarten or a daycare center, when a child looks at a book or draws a picture, a child's desk for placing a book or drawing paper is used, and a chair (hereinafter referred to as "a stool") for children is used.

In a children's desk used in a kindergarten or a daycare center, both the side plates and the upper plate are integrally formed by fastening elements such as screws, and the legs and the seat plate are integrally formed by fastening elements such as screws.

Therefore, when assembling a conventional child desk and a stool, the desk and the stool need to be assembled by tightening the screws one by one, which results in a long assembly time of the desk or the stool.

In addition, when a conventional child desk and a chair are to be stored, it is necessary to disassemble the desk and the stools by unscrewing the screws one by one. Thus, the disassembling time is long and the disassembling is very inconvenient.

Korean Utility Model Registration No. 0147288 "Prefabricated chairs for children"

Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art,

It is an object of the present invention to shorten the assembling time of a child's desk and a stool by simply assembling a child's desk and stools together with a wedge-shaped structure, and by dismantling a desk and a stool The present invention provides a children's bookstore plate assembly apparatus for children and a prefabricated children's bookstore using the plate assembly apparatus.

Another object of the present invention is to provide a rear elevation plate on a desk top plate, which can be attached to a rear elevation plate to play a game, and also to draw a picture on a rear elevation plate, It provides a children's prefabricated desk.

Another object of the present invention is to provide a children's prefabricated desk which can hit an electronic key.

Another object of the present invention is to provide a child-wearable stool provided with a backrest.

According to an aspect of the present invention, there is provided an apparatus for assembling a bookstore plate for a child, the apparatus comprising: a table; Or vertical holes; A through-hole connecting plate formed to protrude outward from a connecting end of a plate connected and fixed to a plate serving as a leg of a desk or a stool and inserted into the elongated hole and having a wedge through hole formed therein; And a wedge penetrating through the wedge through-hole in a state where the penetrating connecting plate penetrates the long hole.

Further, the wedge through-hole of the "apparatus for assembling a bookstore for a child" according to the present invention is formed as a long hole, and the wedge has wedge inclined surfaces on both sides so that the width of one end is wide and the width of both ends And is formed to be narrow.

In addition, in the "apparatus for assembling a bookstore for a child" according to the present invention, the wedge is inserted into the elongated hole and an elastic hooking plate, which is engaged with one end of both ends of the elongated hole, Is further formed.

In addition, the "prefabricated children's desk using the plate assembling apparatus" according to the present invention includes both vertical plates vertically installed on both sides and serving as legs; An upper plate horizontally formed on the upper side between the two vertical plates and having both sides assembled and connected to both vertical plates by a plurality of plate assembling devices; And a connecting vertical plate formed vertically at a lower portion between the vertical plates and connected to both vertical plates by a plurality of plate assembling devices, wherein the plate assembly device for connecting the vertical plate to the upper plate comprises: A through-hole connecting plate formed to protrude outwardly from the connecting end of the upper plate and inserted through the horizontal hole, and a wedge through hole formed therein; and a through- And a wedge penetrating through the wedge through-hole at the connecting end of the connecting plate, wherein the plate assembling device connecting the vertical plate and the connecting vertical plate includes a vertical elongated hole formed in the upper plate, And a through-hole connecting plate penetrating through the vertical hole and having a wedge through-hole formed therein, It characterized in that it comprises a wedge, which is through the through-hole group.

In addition, a "ready-for-use type children's desk using a plate assembling device" according to the present invention is provided with a hinge shaft which is closely fitted on an upper surface of a top plate and formed on both sides of the rear plate, A backboard provided on the lower surface of the rear upright plate and capable of attaching magnet toys and markable on the surface thereof and provided with a metal plate on the rear side and a back plate provided on both sides of the rear upright plate, And an anti-fall bar provided between the upper portions to prevent the rear rising plate from falling backward.

Further, according to the present invention, the "prefabricated children's desk using the plate assembling apparatus" comprises an electronic keyboard, which is connected to the lower portion of the upper plate through both guide rail portions and is inserted into the lower portion of the upper plate and protruded forward, Further comprising:

Further, according to the present invention, the "stand-up type child stroller using the plate assembling device" includes both side vertical plates which are vertically erected on both sides to serve as legs, and one or more seat plate fixing holes are horizontally formed on the upper portions thereof; A sheet plate horizontally disposed on the upper portion between the both side vertical plates and having a through protrusion inserted into the sheet plate fixing holes at both ends thereof; And a connecting vertical plate vertically formed between the vertical plates at both sides and having both sides thereof assembled and connected to the vertical plates at both sides by a plate assembling device, wherein a plate assembling device for connecting the vertical plate to the connecting vertical plate comprises: And a through-hole connecting plate that protrudes outwardly from the connecting end of the connecting vertical plate and penetrates through the vertical hole, and a wedge through hole is formed in the vertical hole; And a wedge penetrating through the wedge through-hole in a state where the wedge penetration hole is in a state of being wedged.

The present invention configured as described above has the effect of providing a child's desk and a stool having excellent assemblability that can shorten the assembling time of the desk and the stool by simply assembling the children's desk and the stools constituting the stool with a wedge- And it is possible to provide a desk and a stool that can be easily dismantled, which can reduce the disassembly time of the desk and the stool by only dismantling the wedges when storing and transporting.

In addition, the present invention provides a rear elevation plate that is erected on the rear side of a desk top plate, so that a magnetic toy can be attached to the rear elevation plate, and a picture can be drawn on the rear elevation plate, Thereby providing a children's prefabricated desk that can further stimulate the learning interest of the children.

In addition, the present invention also provides a children's prefabricated desk capable of piano education by allowing an electronic keyboard to be struck.

It is another object of the present invention to provide a child restraint system for a child who is provided with a backrest that allows a child to comfortably sit on the back.

FIG. 1 shows a plate assembling apparatus according to the present invention,
1A is an exploded perspective view showing a state where a plate assembling device is connected to a horizontal elongated hole,
1B is a perspective view showing a state where a plate assembling device is connected to a horizontal elongated hole,
1C is an exploded perspective view showing a state in which a plate assembling device is connected to a vertical elongated hole,
1D is a perspective view showing a state where a plate assembling device is connected to a vertical elongated hole,
1E is a perspective view of the wedge as seen from the rear side.
2 shows a desk using a plate assembling apparatus according to the present invention,
2A is a perspective view,
2B is a front view,
2C is a bottom view,
FIG. 2D is a perspective view showing a state in which the rear fixing plate is vertically erected and the electronic keyboard protrudes forward. FIG.
3 is a view showing a stall using a plate assembling apparatus according to the present invention. FIG. 3A is a perspective view,
3B is a front view,
3C is a right side view.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be understood, however, that the invention can be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

FIG. 1 is a view showing a plate assembling apparatus according to the present invention, FIG. 2 is a view showing a desk using a plate assembling apparatus according to the present invention, and FIG. 3 is a view showing a stitch using a plate assembling apparatus according to the present invention .

As shown in the drawing, the plate assembling apparatus 1 according to the present invention connects the desk for children D and the plates 2 constituting the stall C, A horizontal or vertical elongated hole 11 formed in a plate 2 serving as both legs and a plate 2 connected and fixed to a plate 2 serving as a leg of a desk D or a stall D A penetration connecting plate 12 formed to protrude outward from the connecting end and inserted into the elongate hole 11 and having a wedge through hole 121 formed therein; And a wedge 13 penetrating through the wedge through-hole 121 in a state where the wedge is inserted.

The wedge through-hole 121 is formed as a long hole 11. The wedge 13 has wedge inclined surfaces 131 formed on both sides thereof so that one end of the wedge 13 is wide on both sides and the other end is narrow on both sides.

Therefore, when connecting the boards 2 constituting the desk D or the stall C through the plate assembling apparatus 1 according to the present invention, it is necessary to connect them to the elongated holes 11 formed on one plate 2 to be connected first And the through-hole connecting plate 12 formed at the connection end of the other plate 2 to be inserted therethrough. The wedge 13 is inserted into the wedge through hole 121 of the through-hole connecting plate 12 protruding out of the long hole 11, The desk D or the stool C can be easily assembled by connecting the two plates 2 constituting the child seat.

On the other hand, the wedge 13 is provided at its outer side with an elastic fastening plate (not shown) which is engaged with one end (hereinafter referred to as "outer end") of both ends of the outer surface of the long hole 11, (132) protrudes to the outside. That is, the elastic retaining plate 132 has elasticity, and the end of the elastic retaining plate 132 is caught and fixed to the outer end of the long hole 11. Therefore, when the wedge 13 is inserted into the wedge through hole 121, the elastic holding plate 132 is hooked to the outer end of the long hole 11, so that the wedge 13 is inserted into the wedge 13 The wedge 13 is not released.

When the wedge 13 is detached from the wedge through hole 121 while the wedge 13 is inserted into the wedge through hole 121, the wedge 13 is inserted into the wedge through hole 121, So that the wedge 13 can be easily separated to easily disassemble each of the plates 2 constituting the child desk D or the stall C with ease.

Hereinafter, the assembly type child desk (D) using the plate assembling apparatus constructed as above will be described.

As shown in FIG. 2, the child-wearable desk D according to the present invention includes two side vertical plates 21 vertically installed on both sides and serving as legs, The upper plate 22 and the lower plate 22 are vertically formed at the lower part between the two vertical plates 21 and are fixed to both vertical plates 21 21) are assembled and connected by a plurality of plate assembling apparatus (1).

The plate assembling apparatus 1 for connecting the vertical plate 21 and the upper plate 22 includes a horizontal elongated hole 11 formed on the vertical plate 21 at an upper portion thereof, A through-hole connecting plate 12 formed to be protruded so as to be inserted into the horizontal elongated hole 11 and having a wedge through-hole 121 formed therein, and a through- And a wedge (13) penetrating the wedge through hole (121).

The plate assembling apparatus 1 for connecting the vertical plate 21 and the connecting vertical plate 23 includes a vertical elongated hole 11 formed in the vertical plate 21 and a vertical elongated hole 11 formed in the connecting end of the connecting vertical plate 23 A through-hole connecting plate 12 protruding outwardly and penetrating through the vertical hole 11 and having a wedge through-hole 121 formed therein; and a through-hole connecting plate 12 penetrating the long hole 11, And a wedge 13 penetrating through the wedge through-hole 121 in a state where the wedge is inserted.

The wedge 13 is the same as the wedge 13 of the above-described plate assembling apparatus 1. The wedge 13 has wedge inclined faces 131 formed on both sides thereof, and the width of one end is wide and the width of the other end is narrow will be. The wedge 13 is engaged with one end (hereinafter referred to as the " outer end ") of both ends of the outer surface of the elongated hole 11 in the state of being inserted into the elongated hole 11, The elastic hooking plate 132 is formed so as to protrude outward.

It is preferable that at least one protruding bent portion 26 and at least one depressed bent portion 27 are further formed in front of each of the vertical plates 21 so that the appearance of the vertical plate 21 can be improved.

The desk D is mounted on the upper surface of the upper plate 22 and is rotated around the hinge axis S by a hinge axis S formed on both sides of the rear side to penetrate the vertical plates 21 on both sides Further comprising a rear elevation plate (4) Further, a white board (W) is further provided on the lower surface of the rear elevation plate (4).

It is preferable that the white board W is provided with an iron plate (not shown) at the rear so that the children can attach and play the magnet toy while the rear elevation plate 4 is vertically erected. The surface of the white board W can be marked with a marker, and it is possible to draw or write a picture through a marker.

It is preferable that a fall preventing bar 41 is further provided between the both sides of the rear rising plate 4 and the upper side of the both side vertical plates 21 so as to prevent the rear rising plate 4 from falling back .

A vertical shaft 42 vertically erected at an upper rear portion of each of the vertical plates 21 and a hinge portion 43 connected to an upper portion of the vertical axis 42 via a hinge portion 43, It is preferable to further include a bending shaft 44 which is bendable inward to prevent the rear rising plate 4 from falling forward. That is, the bending shaft 44 is bent inward while the rear elevation plate 4 is in the upright position, thereby preventing the rear elevation plate 4 from falling forward.

Therefore, the child prefabricated desk (D) of the present invention is provided with the rear elevation plate (4) which is installed on the rear side of the upper plate (22) of the desk (D), so that the magnet toy can be attached to the rear elevation plate It is also a useful invention that can induce more interest in learning in children by making it possible to draw or write pictures or texts on the rear board (4).

The children's prefabricated desk D according to the present invention is connected to the lower portion of the upper plate 22 through the guide rail portions G on both sides and is inserted into the lower portion of the upper plate 22 and can be projected forward, And an electronic key (5) provided with a part (51). Particularly, the guide rail part G is structured such that the electronic keyboard 5 can be slid horizontally, and the electronic keyboard 5 can be separated from the desk. And a detailed description thereof will be omitted.

A battery insertion portion 52 may be further provided on the lower portion of the electronic key 5 so that the desk D can be easily moved while being used. In addition, a known speaker unit 53 is provided in the lower portion of the electronic keyboard 5 to emit sound of the electronic keyboard 5 to the outside.

Therefore, the child prefabricated desk D according to the present invention is a useful invention that can be used not only as a desk D but also as an electronic keyboard 5, thereby enabling piano education.

Hereinafter, the assembly and disassembly process of the desk D for children according to the present invention will be described.

2, when assembling the child-wearable desk D for children according to the present invention, a plurality of long holes 11 in the horizontal direction formed on the vertical plates 21 on both sides are provided on both sides of the upper plate 22 Through the plurality of through-hole connecting plates (12). A plurality of through-connecting plates 12 provided on both sides of the connecting vertical plates 23 and 21 are passed through the vertical holes 11 formed in the vertical plates 21 on both sides.

A plurality of wedges 13 are inserted into the through-hole connecting plates 12 protruding outward from the respective elongated holes 11 and the elastic fastening plate 132 formed on each wedge 13 is inserted into the wedge through- (D) is assembled through a process of engaging with the outer end of the desk (121).

When the assembly of the desk D is completed as described above, both sides of the transfer key 5 and the guide rail G provided on both sides of the upper side of the vertical plate 21 are assembled with each other, It can be mounted.

On the contrary, when the desk D is disassembled for storage or transportation, the electronic keyboard 5 connected and assembled via the guide rail G is first released. The respective elastic wedge plates 132 of the wedge 13 inserted into the wedge through holes 121 of the respective through-connection plates 12 are pressed to separate the respective wedges 13, The desk D can be disassembled by separating the upper plate 22 and the connecting vertical plate 23 from each other.

Therefore, the child prefabricated desk (D) according to the present invention is a useful invention that can shorten the assembly time of the desk (D) only by simple assembly of the wedges (13). Also, the children's prefabricated desk (D) according to the present invention is a useful invention which can quickly dismantle the desk (D) by only dismantling the wedges (13) during storage and transportation.

In addition, the assembled child stool using the plate assembling apparatus constructed as described above will be described as follows.

As shown in FIG. 3, the child restraint chair (C) according to the present invention is vertically erected on both sides and functions as a leg, and on each of the upper and lower sides, one or more seat plate fixing holes (H) A sheet plate 24 horizontally disposed at an upper portion between the vertical plate 21 and both vertical plates 21 and formed at both ends thereof with a through protrusion P penetratingly inserted into the sheet plate fixing hole H, And a connecting vertical plate 23 which is vertically formed between the both side vertical plates 21 and whose both sides are assembled and connected to the both vertical plates 21 by the plate assembly apparatus 1. [

The plate assembling apparatus 1 for connecting the vertical plate 21 and the connecting vertical plate 23 includes a vertical elongated hole 11 formed in the vertical plate 21 and a vertical elongated hole 11 formed in the connecting end of the connecting vertical plate 23 A through-hole connecting plate 12 protruding outwardly and inserted into the vertical hole 11 and having a wedge through-hole 121 formed therein, and a through-hole connecting plate 12 penetrating the long hole 11 And a wedge (13) penetrating through the wedge through hole (121).

The upper and lower stoele rollers 211 and 211 are integrally formed so as to protrude upward from the upper portion of the upper portion of each of the vertical plates 21, And a backrest plate 2 which is assembled and connected to the upper projection 211 of the straight plate 21 by the plate assembly apparatus 1. [

The plate assembling apparatus 1 for connecting the upper protrusion plate 211 and the backrest plate 25 includes a vertical elongated hole 11 formed in the upper protrusion plate 211 and a vertical elongated hole 11 formed in the connection end of the backrest plate 25 A through-hole connecting plate 12 protruding outwardly and inserted into the vertical hole 11 and having a wedge through-hole 121 formed therein, and a through-hole connecting plate 12 penetrating the long hole 11 And a wedge (13) penetrating through the wedge through hole (121). Therefore, the child restraint chair (C) according to the present invention has the advantage that the child can comfortably sit on the back because the backrest is separately provided.

The wedge 13 is the same as the wedge 13 of the above-described plate assembling apparatus 1. The wedge 13 has wedge inclined surfaces 131 formed on both sides of the wedge 13. The width of one end of the wedge 13 is wide and the width of both ends of the other end is narrow . The wedge 13 is engaged with one end (hereinafter referred to as the " outer end ") of both ends of the outer surface of the elongated hole 11 in the state of being inserted into the elongated hole 11, The elastic hooking plate 132 is formed so as to protrude outward.

At least one protruding bending portion 26 and at least one depressing bending portion 27 are further formed at the front and rear of the vertical plate 21 and the upper protrusion plate 211 so as to enhance the aesthetics of the vertical plate 21 . In addition, it is preferable that a recess is formed at the lower center of the vertical plate 21 so as to facilitate the movement of the legs C by reducing an area close to the ground.

Hereinafter, the process of assembling and disassembling a child stroller according to the present invention will be described.

3, when assembling the child restraint chair (C) according to the present invention, a plurality of seat plate fixing holes (H) formed on both side vertical plates (21) are provided on both sides of the seat plate And a plurality of formed penetrating protrusions P are inserted.

A plurality of penetrating connecting plates 12 formed on both sides of the connecting vertical plate 23 are inserted into a plurality of vertical holes 11 formed in the vertical plates 21 on the both sides. A plurality of through-connection plates 12 formed on both sides of the backrest plate 25 are inserted into the vertical holes 11 formed in the upper side stone projections 211 on both sides.

A plurality of wedges 13 are inserted into the through-hole connecting plates 12 protruding outward from the respective elongated holes 11 and the elastic fastening plate 132 formed on each wedge 13 is inserted into the wedge through- And the outer end of the staple C is hooked on the outer end of the staple tube 121.

On the other hand, when the stall C is dismounted to store or carry the stall C, the wedge 13 is inserted into the wedge through-hole 121 of each of the through- After separating each wedge 13 by pressing the elastic hooking plate 132, the seat plate 24, the connecting vertical plate 23 and the backrest plate 25 are separated from each other by the two vertical plates 21, You can do it.

Therefore, the child restraint chair (C) according to the present invention is a useful invention that can shorten the assembly time only through simple assembly of the wedges (13). In addition, the children's prefabricated desk (D) according to the present invention is a useful invention which can reduce the disassembly time of the stools only by disassembling the wedges (13) during storage or transportation.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It is clear that the present invention can be suitably modified and applied in the same manner. Therefore, the above description does not limit the scope of the invention defined by the limitations of the following claims.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the scope of the present invention.

1: plate assembling device
11:
12: Through-hole connection plate
121: Wedge through hole
13: Wedge
131: wedge inclined surface, 132:
2: Edition
21: Vertical plate
211: Top stone publication
22: Top plate
23: Direct connection
24: sheet plate
25: Backrest plate
26: extrusion bend
27: depression bend
4: Rear plate
41: anti-fall bar
42: vertical axis
43: Hinge section
44: Bending axis
S: Hinge axis
W: Whiteboard
5: Electronic keyboard
51:
52: Battery insertion part
53: Speaker section
H: Sheet plate high suit hole
P: penetration projection
G: Guide rail part

Claims (15)

By connecting the plates constituting the desk and the stools to each other,
A horizontal or vertical elongated hole formed in a plate serving as both legs of the plates;
A through-hole connecting plate formed to protrude outward from a connecting end of a plate connected and fixed to a plate serving as a leg of a desk or a stool and inserted into the elongated hole and having a wedge through hole formed therein;
A wedge penetrating through the wedge through-hole in a state where the penetrating connecting plate penetrates the long hole;
And a display unit for displaying the image on the display unit.
The method according to claim 1,
Wherein the wedge through-hole is formed as a long hole,
Wherein the wedge is formed with wedge inclined surfaces on both sides thereof so that one end of the wedge is wide on both sides and the other end of the wedge is formed to have a narrow width on both sides.
3. The method of claim 2,
On the outer side of the wedge
Wherein an elastic latching plate which is engaged with one end of both ends of an outer side surface of the long hole when the wedge is inserted into the long hole is further protruded to the outside.
A pair of vertical plates vertically installed on both sides and serving as legs;
An upper plate horizontally formed on the upper side between the two vertical plates and having both sides assembled and connected to both vertical plates by a plurality of plate assembling devices;
And a connecting vertical plate formed vertically at a lower portion between the both side vertical plates and having both sides assembled and connected to both vertical plates by a plurality of plate assembling devices,
A plate assembling apparatus for connecting the vertical plate and the upper plate
A horizontal elongated hole formed in the upper plate,
A through-hole connecting plate formed to protrude outward from a connection end of the upper plate and inserted through the horizontal hole, and a wedge through hole formed therein;
And a wedge penetrating the wedge through-hole in a state where the through-hole connecting plate penetrates the long hole,
The plate assembling apparatus for connecting the vertical plate and the connecting vertical plate
A vertical elongated hole formed in the upper plate,
A through-hole connecting plate formed to protrude outward at a connecting end of the connecting vertical plate and inserted through the vertical hole, and a wedge through hole formed therein;
And a wedge penetrating through the wedge through-hole in a state where the through-connection plate passes through the elongated hole.
5. The method of claim 4,
Wherein the wedge is formed with wedge inclined surfaces on both sides so that the width of one end of the wedge is wide and the width of both ends of the other end of the wedge is narrow.
6. The method of claim 5,
On the outer side of the wedge
Wherein an elastic latching plate, which is engaged with one end of both ends of the outer surface of the long hole when the wedge is inserted into the long hole, is further protruded to the outside.
7. The method according to any one of claims 4 to 6,
The desk
A rear elevation plate provided closely to the upper surface of the upper plate and rotatable about a hinge axis by hinge shafts formed on both sides of the rear side so as to penetrate through the vertical plates on both sides,
A white board provided on a bottom surface of the rear upright plate and capable of attaching magnet toys, markable on the surface thereof by a marker,
A fall preventing bar provided between both sides of the back up plate and the upper side of the vertical plates on both sides to prevent the back plate from falling rearward,
Wherein the first and second panels are fixed to each other.
8. The method of claim 7,
On the upper rear of each of the vertical plates
A vertical axis provided vertically,
A bending axis that is connected to the upper portion of the vertical shaft through a hinge portion and is bendable inwardly about a hinge portion to prevent the rear surface plate from falling forward,
Wherein the first and second plate assembling apparatuses are assembled with each other.
7. The method according to any one of claims 4 to 6,
The desk
An electronic key which is connected to the lower portion of the upper plate through both guide rail portions and is inserted into the lower portion of the upper plate and protruded forward,
Further comprising a plurality of plate assembling apparatuses.
7. The method according to any one of claims 4 to 6,
Wherein at least one protruding bent portion and at least one depressed bent portion are further formed in front of the vertical plate.
A pair of vertical plates each of which is vertically erected on both sides thereof and serves as a leg, and on each of which upper portions at least one sheet plate fixing hole is formed horizontally;
A sheet plate horizontally disposed on the upper portion between the both side vertical plates and having a through protrusion inserted into the sheet plate fixing holes at both ends thereof;
And a connecting vertical plate which is vertically formed between the two vertical plates and whose both sides are assembled and connected to both vertical plates by a plate assembling device,
The plate assembling apparatus for connecting the vertical plate and the connecting vertical plate
A vertical elongated hole formed in the upper plate,
A through-hole connecting pipe tube formed to protrude outwardly from the connecting end of the connecting vertical plate and inserted through the vertical hole, and a wedge through hole formed therein,
And a wedge penetrating through the wedge through-hole in a state where the penetrating connecting plate penetrates the elongated hole.
12. The method of claim 11,
The stitching
An upper protrusion integrally formed to protrude upward from an upper rear of each of the vertical plates;
A backrest plate on both sides of which upper and lower protrusions are assembled by means of a plate assembling device to both the upper projecting portions of both vertical plates; Further included,
The plate assembling apparatus for connecting the upper projection and the backrest plate
A vertical elongated hole formed in the upper projection,
A through-hole connecting plate formed to protrude outwardly from a connecting end of the backrest plate and inserted through the vertical hole, and having a wedge through hole formed therein;
And a wedge penetrating through the wedge through-hole in a state where the penetrating connecting plate penetrates the elongated hole.
13. The method of claim 12,
Wherein the wedge is formed with wedge inclined surfaces on both sides so that one end of the wedge is wide in both side widths and the other end is narrow in width on both sides.
14. The method of claim 13,
On the outer side of the wedge
And an elastic latching plate which is engaged with one end of both ends of the outer surface of the long hole when the wedge is inserted into the long hole is further protruded to the outside.
15. The method according to any one of claims 12 to 14,
One or more protruding bent portions and one depressed bent portion are further formed on the front and rear of the vertical plate and the upper protrusion,
And a depression is formed at the lower center of the vertical plate to open the lower portion.

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