KR101090195B1 - Chair folding device for table attached chair - Google Patents

Abstract

PURPOSE: An automatic chair folding device for a chair integrated table is provided to facilitate replacement and assembly of parts. CONSTITUTION: An automatic chair folding device for a chair integrated table comprises: a polygonal container(58) which is integrally fixed to the front of the horizontal coupling frame; a polygonal fixation assembly(59) fixed in a screw-hole formed in the lower surface of the fixed bracket by a fixing screw; a polygonal elevation assembly(61) which rotates a horizontal link frame of the elevation chair; a compression coil spring(62) supporting the polygon elevation assembly; a polygonal top cap(63) which blocks the upper end of the compression coil spring; and a long screw(64) and a fixing nut(65).

Description

Automatic folding device for chair integrated table {Chair Folding Device For Table Attached Chair}

The present invention relates to a chair automatic folding device of a chair-integrated table, and more particularly, in a chair-integrated table in which a chair and a table are integrally formed, the table and a plurality of chairs are integrally coupled and each chair is automatically folded. It is configured so that when the user does not use the chair, the folding operation of the chair is naturally performed. When the user leaves the chair, the chair is not only folded automatically, but also the folding operation of the automatic chair folding device is performed. It is easy to assemble and replace parts because it consists of fewer components than required parts, and even if the folding table chair is used for a long time, there is almost no breakdown in these parts, and the manufacturing cost can be greatly reduced to increase the price competitiveness of the product. One improved form of chair integrated table It relates to a chair automatic folding device.

In general, the table is used for a variety of purposes, such as various work tables, conferences, tables for joint classes, shared tables, such tables are composed of a top plate and a lower frame for supporting him, and using a separate chair separated from the table Doing.

However, the chair separated from the table has to be pushed into the table after use to arrange the table, and to use the chair, the chair has to be pulled out.

Since the tables and chairs in the dining room or rest room are separated from each other, especially when installed in a crowded rest room or dining room, the chairs are not properly rearranged and the place is crowded and the person is separated between the table and the chair. There was a lot of inconvenience in moving.

If you do not push the chair after using the inside of the table because it interferes with the mobility of other users, there was an inconvenience that a separate worker must push the chair into the table to organize.

On the other hand, in view of such a problem, a chair-integrated type table configured to be pulled out from a lower side of the table has been proposed.

As an example, the technical configuration of 'Table with automatic folding chair' of Korean Utility Model Registration No. 20-311562 further develops the prior art and applies the hinge of automatic folding structure to the table chair so that the user stands up from the chair. The table shows a structure in which the chair is automatically folded.

The structure is configured to be automatically folded by a spring-loaded hinge there is an effect that the chair is automatically folded when you move away from the chair to utilize the space in which the table is placed more efficiently, the chair is automatic without touching It provides the advantage of folding.

However, the structure is composed of a structure in which the auxiliary frame is coupled to the horizontal frame, the chair mounting rods are coupled to the connecting frame coupled to the hinge of the end of the auxiliary frame so that the weight on the chair acts in the form of twisting back and forth and left and right There is a drawback that the hinge portion is easily damaged by being extended to the hinge portion by the moment force, and one mounting rod serving as a leg of the chair has a disadvantage of being unstable, such as shaking or twisting when weight is loaded.

As another example, the 'table having a folding chair having a backrest' of the Korean Registered Utility Model No. 20-417322 has been developed, which is installed between one or more vertical frames to support the top plate of the table, A table comprising at least one horizontal frame and a chair having a backrest on one side of a seat plate supported by a support, being installed in and out of the upper plate by a hinge device and a connecting frame, wherein the seat plate is disposed on a bottom surface of the seat plate. It is configured by installing a chair support device for rotatably supporting.

In the case of a table having a folding chair having a backrest configured as described above, the chair is rotated in / out of the table by the rotating support of the chair support device so that the chair can be folded, so that the user does not use the chair in the lounge or dining room. Since the chair is arranged to be rotated by pushing the chair directly to the lower part of the top plate, the inconvenience of usability, as well as the problem that other users fall over by the unfolded chair when the user does not push the chair It still remains.

In addition, as the components connecting the chair and the table are connected by welding, the chair and the table cannot be separated. For example, when one of the chair and the table is to be repaired, the entire table including the chair is opened. There is a problem to be moved, there is a problem that the maintenance work is cumbersome, such as each component to be forcibly disconnected to the welding parts connected to each other by welding again to connect the repaired components.

Because of these problems, the chair-integrated table has a structure in which the chair is pulled out when the frame and the hinge structure are connected to the conventional table and the chair, and the chair is folded and the chair is pushed under the table when not in use. Has been provided, and further developed so that the chair is automatically folded, presenting a chair-integrated table of the structure that the chair is automatically folded when the user is out of the chair has the effect that can effectively utilize the space where the table is placed In other words, the chair is automatically folded when the user leaves the chair without touching it.

The structure of the chair automatic folding device of the chair integrated table according to another prior art, as shown in Figures 1 to 3, the a-type connecting frame is axially coupled to receive the spring force to the frame constituting the table and the connecting frame In the chair-integrated table configured to automatically fold the chair by the chair is coupled,

Cylindrical chair leg is formed at the end of the connecting frame, and ring-shaped fixing blocks through which cylindrical chair legs are respectively coupled to the upper and lower portions of the chair leg are combined, and the chair legs are positioned below the upper fixing block. The ring-shaped flow block is coupled to, and the compression coil spring is coupled between the flow block and the lower fixed block is made of a structure.

Therefore, the structure of the chair automatic folding device of the chair integrated table of this type is that the spring 64 expands when the chair is taken out to sit on the chair, and the force is stored, and when the user leaves the chair, the restoring force of the spring folds the connecting frame. Acts as.

When the connecting frame is rotated and folded, the chair coupled to the chair leg is also rotated and folded together, so that one backrest of the chair is first caught by the top plate of the table, and the entire backrest is self-rotated by the chair coupling structure 70. Will be in contact with the state.

As another example of the prior art, as shown in Figs. 4 to 11, the table 110 to place the goods on the upper surface, and the upper support 120 is provided to be spaced apart at regular intervals on the lower surface of the table 110 And, between the lower support 130 extending to the lower side of the upper support 120 and the upper / lower support 120, 130 is horizontally fixed and a plurality of fixing holes 140 at both ends of the through hole Table body 100 consisting of an elongated horizontal support frame 150;

The bracket 210 is inserted into the end of the horizontal support frame 150 to a predetermined depth and the connection portion 212 formed through the connecting hole 211 is formed on the outside and the upper and lower support plates 213 and 214 are formed. ), A rotating housing 220 which is inserted into the upper / lower support plates 213 and 214 of the bracket 210 and has a guide hole 221 formed on one side wall, and closely adheres to an inner wall of the rotating housing 220. It is provided in a cylindrical shape so that it can be fixed in a paper-pressed state, the spring support 232 is opened upwardly and a central shaft tube 233 is formed in the center and the guide hole on the side wall on the same horizontal line as the bottom surface of the spring support 232 One side end is fixed to the end of the connecting portion 212 through the spring installation member 230 and the guide guide hole 231 corresponding to the 221, the other end is the spring installation member 230 Torsion spring 240 is fixed to the), and the central shaft pipe 233 is inserted into the screw The fastening is fastened to the screw shaft 251 of the rotary shaft 250 protruding outward of the upper and lower support plates 213 and 214 of the bracket 210 and the coupling shaft 251 is provided. A rotary folding body 200 composed of a nut 260;

The chair support shaft 320 is fitted to the buffer 300 to which one end of the connection frame 310 connected to the outer side of the rotary housing 220 is connected, and the buffer 300 is provided with a buffer spring. It is a configuration of a folding chair-integrated table, characterized in that comprises a chair 400 configured to allow the shaft 320 to be elevated.

Folding chair integrated table structure as described above,

A torsion spring that connects the rotating folding body of the chair to the end of the horizontal frame of the table so that the chair can be folded inside and outside of the table, but is installed in the rotating housing of the rotating folding body so that the chair is automatically folded into the inside of the table. One end is fixed to the rotating housing and the other end is fixed to the connecting portion connected to the horizontal frame to maintain the elastic moment of rotation of the chair in a stable and improved durability and easy installation.

However, the technical configuration of the chair automatic folding device of the conventional chair-integrated table having the above structure is difficult to assemble and replace parts because it is composed of many components to perform the folding operation, and the manufacturing cost is high and the price competitiveness is low. This chair automatic folding device is fixed to the chair integrated table has been a factor of frequent failures because the user must repeatedly perform tens of thousands of rotations as many times as the user uses the chair.

(1) Korean Laid-open Patent Publication No. 10-2010-95916 (September 1, 2010) Technical Configuration of Chair Automatic Folding Device of Integrated Chair Table (2) Korean Laid-open Patent Publication No. 10-2010-103438 (September 27, 2010) Technical Configuration of 'Foldable Chair Integrated Table' (3) Korean Patent Registration No. 10-549523 (January 27, 2006) 'Technical composition of chair combination structure of chair integrated table' (4) Korean Patent Registration No. 10-549522 (January 27, 2006) 'Technical Configuration of Pedestal Structure of Chair Integrated Table' (5) Korean Patent Registration No. 10-549519 (January 27, 2006) Technical Configuration of Chair Automatic Folding Structure of Integrated Chair Table (6) Korean Patent Registration No. 10-752676 (August 21, 2007) Technical Configuration of 'Integrated Table of Chair Type' (7) Korean Patent Registration No. 10-799188 (January 23, 2008) Technical Composition of 'Foldable Chair Integrated Table'

The present invention was developed to solve the above problems, the chair automatic folding device of the chair-integrated table of the present invention is a chair-integrated table in which the chair and the table is integrally formed, the table and a plurality of chairs are integrally combined Each chair is configured to be automatically folded, so when the user does not use the chair, the folding operation of the chair is naturally made. When the user leaves the chair, the chair is automatically folded without touching it. It is an object of the present invention to facilitate the use of the chair integrated table by allowing the chair to be rotatable only within the range.

In addition, the chair automatic folding device of the chair-integrated table of the present invention is easy to assemble and replace parts because it consists of fewer components than previously required parts to perform the folding operation of the chair automatic folding device, long-term table Even when folding the chair, there is almost no failure in these parts, and it provides a chair automatic folding device of a chair-integrated table that can greatly reduce the manufacturing cost and increase the price competitiveness of the product.

Chair automatic folding device of the chair integrated table of the present invention for achieving the above object,

The chair automatic folding device is connected to the horizontal support frame of the table so that the chair can be rotated in and out of the chair-integrated table, but the compression coil spring is installed in the polygonal cylinder of the chair automatic folding device. In the chair-integrated table, the chair is automatically folded into the inside of the table, and the lifting chair can rotate only within a certain range around the support point,
The chair automatic folding device,
A polygonal cylinder integrally fixed to the front end of the horizontal connection frame of the elevating chair;
A polygonal fixing assembly inserted into a lower end of the polygonal cylinder, the upper surface having two protruding inclined jaws, and fixed to a screw hole formed in the lower surface of the fixing bracket with a fixing screw;
It is inserted into the inside of the polygonal cylinder, the bottom surface has two downwardly protruding inclined jaw, the abutment operation on the fixed assembly by rotating the horizontal connecting frame of the elevating chair in contact with the inclined jaw of the upper surface of the fixed assembly Polygon lifting assembly for rotating the horizontal connecting frame of the elevating chair;
A compression coil spring inserted into the upper long screw of the polygon lifting assembly to elastically support the polygon lifting assembly;
A polygonal upper cap inserted into the upper opening of the polygonal cylinder and covering the upper end of the compression coil spring;
A through hole formed in the upper surface of the fixed bracket after being inserted into the through hole formed in the lower surface of the fixed bracket and penetrating the center of the fixed assembly and the lift assembly, the compression coil spring and the upper cap inserted into the polygonal cylinder. Long screw and fixing nut is inserted into the fastening and fixing so as to enable the rotational operation; it is to constitute.

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As described above, according to the chair automatic folding device of the chair integrated table of the present invention,

In the chair-integrated table consisting of a chair and a table integrally, the table and a plurality of chairs are integrally combined, each chair is configured to be automatically folded so that the folding operation of the chair is naturally made when the user does not use the chair When the user leaves the chair, the chair is automatically folded without touching it, and the rotation is possible only within a certain range around the support point, thereby preventing collision with other components in the folding process.

In addition, the chair automatic folding device of the chair-integrated table of the present invention can simplify and simplify the technical configuration of the chair automatic folding device to give the stability and operation reliability of the chair operation even when folding the table chair for a long time, chair automatic folding Not only there is little failure in the device part, but also easy to assemble and easy to reduce the manufacturing cost.

1 to 3 is a perspective view and a cross-sectional view showing a chair automatic folding device of a chair integrated table according to the prior art
4 to 11 is a perspective view and a cross-sectional view showing a chair automatic folding device of a chair integrated table according to another prior art
12 is a schematic perspective view of a chair integrated table equipped with a chair automatic folding device of the present invention
Figure 13 is a perspective view of the chair automatic folding device of the present invention
14 is a perspective view showing an operating state of the automatic chair folding device of FIG.
15 is an enlarged perspective view showing a chair automatic folding device of the present invention
Figure 16 is an exploded perspective view of a chair automatic folding device of a chair-integrated table of the present invention
17 and 18 are perspective views showing the operating state of the automatic chair folding device of the present invention

Hereinafter, with reference to the accompanying drawings will be described in detail a chair automatic folding device of a chair integrated table.

In Figures 12-18,

Reference numeral 50 denotes a chair automatic folding device of a chair integrated table of the present invention,

The automatic chair folding device 50 is installed to be folded between the front end of the horizontal support frame 51 installed on the lower end of the chair integrated table (A) and the front end of the horizontal connection frame 53 of the elevating chair (52). When the chair is out of the chair, the chair is automatically folded without touching it, and it is possible to rotate only within a certain range around the support point.

'와 같은 형상의 고정브라켓(54)이 일체로 고정 설치되어 있다.The horizontal support frame 51 is installed at the lower end of a conventional chair integrated table (A), the front end of the horizontal support frame 51 '

Fixing bracket 54 of the same shape as' is fixedly installed.

The fixing bracket 54 has through holes 55 and 56 formed at the center of the upper surface and the lower surface, and formed a plurality of screw holes 57 along the edge of the lower surface through hole 56.

Therefore, the through holes 55 and 56 formed in the upper and lower surfaces of the fixing bracket 54 are for screwing into the fixing nut 65 by inserting the long screw 64, which will be described later. The screw hole 57 formed at the edge of the 56 is for fixing the fixing assembly 59 described later to the lower surface of the fixing bracket 54 with the fixing screw 60.

On the other hand, on the fixing bracket 54, when the user moves away from the elevating chair 52, the elevating chair is automatically folded without touching, and the chair automatic folding device 50 allows rotation only within a certain range around the support point. ) Is installed.

The chair automatic folding device 50 is shown in Figure 16,

A polygonal cylinder 58 integrally fixed to the front end of the horizontal connecting frame 53 of the elevating chair 52;

A polygonal fixing assembly 59 inserted into a lower end of the polygonal cylinder and fixed to a screw hole 57 formed at a lower surface of the fixing bracket 54 by a fixing screw 60;

The elevating chair 52 of the elevating chair 52 is inserted into the polygonal cylinder 58 to be brought into contact with the upper surface of the fixed assembly to be moved up and down on the fixed assembly by the pivoting operation of the horizontal connecting frame 53 of the elevating chair 52. A polygon elevating assembly 61 for rotating the horizontal connecting frame 53;

A compression coil spring (62) inserted into the upper long screw of the polygon elevating assembly to elastically support the polygon elevating assembly;

A polygonal upper cap 63 inserted into the upper opening of the polygonal cylinder 58 to cover and cover the upper end of the compression coil spring 62;

A fixed assembly 59, a lifting assembly 61, a compression coil spring 62 inserted into a through hole 56 formed in the lower surface of the fixing bracket 54, and inserted into the polygonal cylinder 58; After passing through the center of the upper cap 63 is inserted into the through-hole 55 formed in the upper surface of the fixing bracket 54 to the long screw 64 and the fixing nut 65 for fixing so that they can be rotated operation Consists of.

The polygonal cylinder 58 is a hollow hollow body, the cross-sectional shape of the cylindrical body is formed of a polygonal cylinder, such as 4, 5, 6, 8, etc., the fixed assembly inserted into the upper, lower and inside thereof ( 59) and the outer surface of the elevating assembly 61 and the upper cap 63 were also formed in a polygonal cross section in the same manner as the inner surface of the polygonal cylinder.

The polygonal cylinder 58 is fixed integrally to the tip of the horizontal connecting frame 53 of the conventional lifting chair 52 so that the polygonal cylinder 58 rotates along the lifting chair when the user rotates the lifting chair. To be.

Therefore, when the user rotates the elevating chair 52, the polygonal cylinder 58 fixedly fixed to the front end of the horizontal connecting frame 53 of the elevating chair 52 is rotated, and the inside of the polygonal cylinder 58 is rotated. The lift assembly 61 is inserted and lifted up and down in contact with the upper surface of the fixed assembly 59, and the lift assembly 61 compresses the compression coil spring 62 installed on the upper portion thereof (Fig. 17). And FIG. 18)

Accordingly, when the user leaves the elevating chair 52, the bottom inclined jaw 67 of the elevating assembly is pushed down by pressing the lower elevating assembly 61 by the restoring force of the compression coil spring 62 so that the upper inclined jaw of the fixed assembly 59 is fixed. The lifting chair 52 is rotated while descending along the inclined surface of 66 so that the lifting chair is automatically folded into the table A from the chair integrated table.

The polygonal fixing assembly 59 is inserted into the lower end of the polygonal cylinder and is fixed to the screw hole 57 formed in the lower surface of the fixing bracket 54 by the fixing screw 60.

Two protruding inclined jaws 67 formed on the bottom of the elevating assembly 61 to be described later are formed by forming two protruding inclined jaws 66 on the upper surface of the polygonal fixed assembly 59 so that the inclined jaws ( 66, it was possible to move up and down along the slope.

On the other hand, the elevating assembly 61 is a polygonal shape such as a quadrilateral, a five-corner, a six-corner or an octagonal shape so as to be the same as the inner cross-sectional shape of the polygonal cylinder 58, the interior of the polygonal cylinder 58 It is inserted into the abutment on the fixed assembly by the pivoting operation of the horizontal connecting frame 53 of the elevating chair 52 in contact with the inclined jaw 66 of the upper surface of the fixed assembly (59).

On the bottom of the elevating assembly 61, two downwardly protruding inclined jaws 67 are formed so that two protruding inclined jaws 66 formed on the upper surface of the fixed assembly 59 abut the inclined jaws 66. It is possible to move up and down along the inclined plane of the horizontal pivot frame (53) of the lifting chair (52).

The compression coil spring 62 is inserted into the upper long screw 64 of the polygon lifting assembly 61 to elastically support the polygon lifting assembly,

As the compression coil spring 62 rotates the horizontal connecting frame 53 of the elevating chair 52, the polygonal cylinder 58 rotates, and the bottom slope of the elevating assembly 61 inserted into the polygonal cylinder is rotated. The jaw 67 rises along the inclined jaw 66 of the upper surface of the fixed assembly 59 to compress the compression coil spring 62.

Therefore, when the user of the table A leaves the elevating chair 52, the restoring force of the compressed compression coil spring 62 presses the upper surface of the polygon elevating assembly 61, and then the polygon elevating assembly 61 The bottom inclined jaw 67 descends along the inclined surface of the top inclined jaw 66 of the fixed assembly 59 to rotate the polygonal cylinder 58 that cooperates with the lift assembly, and horizontally connect the lift chair 52. By rotating the frame 53, the elevating chair 52 of the chair integrated table A is automatically folded smoothly.

Even when the user of the table A rotates the horizontal connecting frame 53 of the elevating chair to use the elevating chair 52, the inclined jaw 77 protruding from the bottom of the polygon elevating assembly 61 is fixed. It is preferable to construct a known stopper not to exceed the highest point of the inclined jaw 66 protruding from the upper surface of the assembly 59.

The polygonal upper cap 63 covers the upper opening of the polygonal cylinder 58 and blocks the upper end of the compression coil spring 62. The polygonal upper cap 63 is formed at the upper opening of the polygonal cylinder 59. It is inserted and rotates together with the polygonal cylinder.

' 형상의 고정브라켓(54)에 고정너트(65)로 고정시켜서 이들이 서로 유기적인 작동이 가능하도록 고정하는 체결수단이다.The long screw 64 is vertically fastened to the center of the fixed assembly 59 and the lifting assembly 61, the compression coil spring 62 and the upper cap 63 is inserted into the polygonal cylinder (58). '

It is a fastening means for fixing to the fixing bracket 54 of the 'shape with a fixing nut 65 so that they can operate with each other organically.

The long screw 64 has a screw thread formed at the upper end, and a head is formed at the lower end thereof so that screwing is possible. Through holes 56 formed at the lower surface of the fixing bracket 54 have an upper end of the long screw 64. ) And then penetrate the center of the fixed assembly 59 and the lifting assembly 61, the compression coil spring 62 and the upper cap 63 inserted into the polygonal cylinder 58, and then the fixing bracket Insert into the through hole 55 formed in the upper surface of the 54 and then screwed into the fixing nut 65 to be fastened.

The chair automatic folding device 50 of the chair integrated table of the present invention is between the front end of the horizontal support frame 51 installed on the lower end of the chair integrated table (A), and the end of the horizontal connection frame 53 of the elevating chair (52). 12 and 13 so that the chair is automatically folded without touching the chair when the user moves away from the chair, and also rotates only within a certain range around the support point (see Fig. 14). will be.

That is, when the user rotates the elevating chair to use the elevating chair 52 installed at the bottom of the table (A), the polygonal cylinder 58 integrally fixed to the front end of the horizontal connecting frame 53 of the elevating chair 52. Rotates, and the bottom inclined jaw 67 of the elevating assembly 61 which is inserted into the polygonal cylinder 58 and is brought into contact with the top inclined jaw 66 of the fixed assembly 59 is raised, This lifting assembly 61 compresses the compression coil spring 62 installed thereon (see Figs. 17 and 18).

In this state, when the user sits on the elevating chair 52, the upper seat of the elevating chair slightly lowers the chair while compressing a known coil spring installed inside the chair elevating shaft 68, which is a publicly known technique in the art. The 69 comes into contact with the ground to be used as the elevating chair 52 used in the chair integrated table A.

As described above, when the user is used as the elevating chair 52 in the chair integrated table A, and the user leaves the elevating chair, the lower elevating assembly 61 thereof is restrained by the restoring force of the compression coil spring 62 of the automatic chair folding apparatus 50. Press the bottom inclined jaw 67 of the lifting assembly descends along the inclined surface of the top inclined jaw 66 of the fixed assembly 59 to rotate the polygonal cylinder 58 that cooperates with the lifting assembly, and is connected to the polygonal cylinder. By rotating the horizontal connection frame 53 by rotating the lifting chair 52 coupled thereto, the lifting chair is automatically folded into the table A in the chair integrated table.

When the chair automatic folding device 50 is taken out to sit the lifting chair located at the bottom of the chair integrated table (A), the chair lifting shaft 68 configured at the bottom of the lifting chair is caught on the ground so as not to interfere with the folding operation. In order to, it is configured to float in the air in a state slightly separated from the ground as in the publicly known technology described in the prior art of the present invention, when the weight is loaded on the chair is configured in the interior of the chair lift shaft 68 As the coil spring is compressed, the chair descends and the lower pedestal 69 comes into contact with the ground.

The embodiments of the present invention described above and illustrated in the drawings should not be construed as limiting the technical spirit of the present invention. The scope of protection of the present invention is limited only by the matters described in the claims, and those skilled in the art will be able to modify the technical idea of the present invention in various forms.

Therefore, such improvements and modifications will fall within the protection scope of the present invention if it is obvious to those skilled in the art.

50: chair automatic folding device 51: horizontal support frame
52: lifting chair 53: horizontal connecting frame
54: fixing bracket 55: through hole
56 through hole 57 screw hole
58: polygonal cylinder 59: fixed assembly
60: fixing screw 61: lifting assembly
62: compression coil spring 63: upper cap
64: long screw 65: fixing nut
66: inclined jaw 67: inclined jaw
68: chair lift shaft 69: pedestal

Claims (2)

The chair automatic folding device is connected to the horizontal support frame of the table so that the chair can be rotated in and out of the chair integrated table (A), and the through-holes are formed at the top and bottom surfaces at the ends of the horizontal support frame. Fixing and integrally installing a fixing bracket having a plurality of screw holes along the edge of the lower surface through hole,
Compression coil spring is installed in the polygonal cylinder of the automatic folding device so that the chair is automatically folded inside the table A when the user moves away from the lifting chair, and the lifting chair can be rotated only within a certain range around the support point. In the chair-integrated table,
The chair automatic folding device 50,
A polygonal cylinder 58 integrally fixed to the front end of the horizontal connecting frame 53 of the elevating chair 52;
Is inserted into the lower end of the polygonal cylinder, the upper surface is provided with two protruding inclined jaw 66, fixed to the screw hole 57 formed in the lower surface of the fixing bracket 54 by a fixing screw 60 A polygonal fixed assembly 59;
It is inserted into the inside of the polygonal cylinder 58, the bottom surface is provided with two downwardly projecting inclined jaw 67, the horizontal surface of the elevating chair 52 in contact with the upper surface inclined jaw 66 of the fixed assembly A polygon elevating assembly 61 for elevating the horizontal assembly frame 53 of the elevating chair 52 while elevating the fixed assembly by the pivoting operation of the connecting frame 53;
A compression coil spring (62) inserted into the upper long screw of the polygon elevating assembly to elastically support the polygon elevating assembly;
A polygonal upper cap 63 inserted into the upper opening of the polygonal cylinder 58 to cover and cover the upper end of the compression coil spring 62;
A fixed assembly 59, a lifting assembly 61, a compression coil spring 62 inserted into a through hole 56 formed in the lower surface of the fixing bracket 54, and inserted into the polygonal cylinder 58; The long screw 64 and the fixing nut 65 which penetrate the center of the upper cap 63 and are inserted into the through holes 55 formed in the upper surface of the fixing bracket 54 to fasten and fix them to be capable of rotational operation. Chair automatic folding device of a chair-integrated table comprising a. delete

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