KR101731192B1

KR101731192B1 - Length adjustable table

Info

Publication number: KR101731192B1
Application number: KR1020150178770A
Authority: KR
Inventors: 김진홍
Original assignee: 김진홍
Priority date: 2015-12-15
Filing date: 2015-12-15
Publication date: 2017-04-27

Abstract

According to one embodiment of the present invention, there is provided a variable length table capable of changing the length of a table as required, comprising: a first upper plate and a second upper plate simultaneously installed to slide in mutually opposite directions; And a third upper plate provided between the first upper plate and the second upper plate to move up and down in association with the sliding movement of the upper plate and the second upper plate.

Description

A variable length table {Length adjustable table}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a table, and more particularly, to a variable length table capable of changing the length of a table as required.

Generally, a table is composed of a top plate having a predetermined area and a supporting member such as a leg supporting the top plate. The top plate of such a table can be placed on top of it with a table top or the user can sit around it and use the top plate as a pedestal.

However, the top plate of the table has different specifications such as the required area depending on the use purpose and the number of personnel used. For example, if a group of four or five people use a table for a sudden visit from a group of people who suddenly visit a large number of food, the table space on the table is insufficient to secure enough seating space for the food and visitors I will not.

In other words, since the area of the top plate is already limited at the time of manufacture, a table having the same height may be separately disposed in order to place a large number of table-top articles or a plurality of people at the same time, or a separate flat plate .

In this case, there is an inconvenience that a separate table must be prepared in advance, and if the weight of the objects placed on the flat surface is shifted to one side, the flat plate may be torn down, and the table objects may fall to the floor and be damaged.

In addition, when a user desires to expand or reduce the size of a table used in a home or office, or relocate a table, it is inconvenient to discard an existing table and purchase a new table in order to utilize the limited space.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a variable length table capable of changing the length of a top plate as needed.

Another object of the present invention is to provide a variable length table capable of changing the overall length by changing the arrangement of the upper plates divided into a plurality of sections.

It is still another object of the present invention to provide a variable-length table whose overall length is changed by sliding and lifting the upper plate.

The above object of the present invention can be also achieved by a table including an upper plate and a supporting member for supporting the upper plate, wherein the upper plate includes: a first upper plate and a second upper plate installed to slide in opposite directions at the same time; And a third upper plate installed between the first upper plate and the second upper plate such that the first upper plate and the second upper plate move up and down in association with the sliding movement of the first upper plate and the second upper plate.

According to a preferred aspect of the present invention, when the third upper plate is arranged side by side between the first upper plate and the second upper plate, the first upper plate and the second upper plate are firstly slid in a direction away from each other, And when the first upper plate and the second upper plate are thirdly slid in a direction away from each other, they can rise.

According to another preferred aspect of the present invention, there is provided a plasma display panel comprising: a pair of horizontal frames spaced apart from each other in the width direction of the upper plate and provided at a lower portion of the upper plate; And an elevating mechanism for elevating and lowering the third upper plate in accordance with the slide movement of the third upper plate.

According to another preferred aspect of the present invention, the elevating mechanism includes: an inclined groove formed at an inner side of the horizontal frame at an angle to be inclined; and a lower frame coupled to the lower surface of the first upper plate or the second upper plate so as to be parallel to the horizontal frame And a lift frame coupled to a bottom surface of the third upper plate and interposed between the horizontal frame and the moving frame, the elevating frame being configured to move up and down along the inclined grooves and the inclined surfaces when the moving frame is moved can do.

According to another preferred aspect of the present invention, the elevating mechanism may further include a fixed frame coupled to the inside of the transverse frame and having an inclined groove formed at an upper end thereof.

According to another preferred aspect of the present invention, the fixed frame may include a horizontal groove formed at an upper end of the inclined groove at a predetermined interval.

According to another preferred aspect of the present invention, the moving frame may include a guide block coupled to one surface of the moving frame and having the inclined surface formed on one side thereof.

According to another preferred aspect of the present invention, the moving frame may further include a concave groove formed on an upper surface of the guide block.

According to another preferred aspect of the present invention, the elevating frame includes a first elevating projection protruding from one side and sliding along the inclined groove, and a second elevating projection protruding from the other side and sliding along the inclined surface, .

According to another preferred aspect of the present invention, there is provided a fixing device comprising: a fixed rail installed between the pair of horizontal frames in parallel with the horizontal frame; And a moving rail coupled to a bottom surface of the first upper plate or the second upper plate.

According to another preferred aspect of the present invention, there is provided a pulley structure, comprising: a pair of pulleys provided at both ends of the fixed rail; one end coupled to one side of the first upper plate and the other end extending around the pulley, As shown in FIG.

According to another preferred aspect of the present invention, the bearing may further include a bearing installed at both ends of the transverse frame, and a stopper provided on the bottom surface of the first upper plate and the second upper plate, respectively, .

According to the variable length table according to the present invention, the length of the table top plate can be easily expanded or shortened as needed.

In addition, according to the length variable table according to the present invention, the entire length of the upper plate can be easily changed by holding one of the upper plates divided into a plurality of pieces and sliding them.

In addition, according to the variable length table according to the present invention, since the upper plate is disposed naturally when the entire length is changed, it does not give a sense of discomfort to the appearance.

1 is a perspective view of a variable length table according to an embodiment of the present invention;
2 is a plan view of a variable length table according to an embodiment of the present invention;
3 is a plan view of a variable length table having a reduced length of a top plate according to an embodiment of the present invention.
4 is a perspective view of a stationary frame according to an embodiment of the present invention;
5 is a perspective view of a moving frame according to an embodiment of the present invention;
6 is a perspective view of a lifting frame according to an embodiment of the present invention.
7 is a perspective view of a portion of the elevating mechanism when the entire length of the upper plate is expanded;
8 is a sectional view of the elevating mechanism when the entire length of the upper plate is expanded.
9 is a perspective view of a portion of the elevating mechanism when the entire length of the upper plate is shortened.
10 is a cross-sectional view of the elevating mechanism when the overall length of the upper plate is shortened.
FIG. 11 and FIG. 12 are usage states showing sliding movement of the first upper plate and the second upper plate according to an embodiment of the present invention. FIG.
13 to 15 are views showing the use state of a variable length table according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. It is to be understood, however, that the embodiments described below are only for explanation of the embodiments of the present invention so that those skilled in the art can easily carry out the invention, It does not mean anything. In describing various embodiments of the present invention, the same reference numerals are used for components having the same technical characteristics.

Example

1 is a perspective view of a variable length table according to an embodiment of the present invention.

The variable length table (hereinafter, referred to as a 'table') 100 according to an embodiment of the present invention can be manufactured in various materials and various sizes as needed, such as wood, steel, or synthetic resin.

The table 100 includes a top plate 200 and a supporting member 300 for supporting the top plate 200. The supporting member 300 is disposed along the longitudinal edge of the top plate 200, And a plurality of legs 320 vertically installed on the bottom surface of the transverse frame 310. The transverse frame 310 may include a plurality of legs 320 that are spaced apart from each other,

The first upper plate 210 and the second upper plate 220 which are respectively disposed on both edges of the upper plate 200 are installed to be slidable in opposite directions along the longitudinal direction of the table 100 And a third upper plate 230 disposed between the first upper plate 210 and the second upper plate 220 is installed to vertically move in conjunction with the sliding movement of the first and second upper plates 210 and 220.

That is, according to the table 100 according to an embodiment of the present invention, when the third upper plate 230 is disposed in parallel between the first and second upper plates 210 and 220 as shown in FIG. 1, The length of the upper plate 200 can be maximized and the length of the upper plate 200 can be reduced to a minimum when the third upper plate 230 is lowered and buried in the lower portions of the first and second upper plates 210 and 220 .

FIG. 2 is a plan view of a variable length table according to an embodiment of the present invention, and FIG. 3 is a plan view of a variable length table having a reduced length of a top plate according to an embodiment of the present invention.

As shown in FIGS. 2 and 3, a pair of horizontal frames 310 spaced apart in parallel to each other in the width direction (vertical direction in the drawing) of the upper plate 200 are disposed in the longitudinal direction of the upper plate 200 And the pair of horizontal frames 310 may be supported by a plurality of legs 320. The pair of horizontal frames 310 may be supported by a plurality of legs 320.

At this time, the horizontal frame 310 may have a bar shape having a rectangular cross section, and the cross-sectional shape thereof may be variously selected as needed. In addition, the legs 320 may be formed in a bar shape in the form of a common table leg, or may be formed of a panel-shaped wall having a predetermined width, length, and thickness and installed vertically. It is needless to say that the horizontal frame 310 and the legs 320 may be integrally formed.

An elevating mechanism 400 for elevating and lowering the third upper plate 230 in conjunction with the sliding movement of the first upper plate 210 and the second upper plate 220 is installed inside each of the horizontal frames 310. FIG. 2 shows an example in which the upper surfaces of the first upper plate 210, the second upper plate 220 and the third upper plate 230 are closely arranged on the same plane. FIG. The second upper plate 220 and the second upper plate 220 are slid in the direction of the third upper plate 230 so as to be in close contact with each other and at this time the third upper plate 230 is moved by the elevating mechanism 400 into the first and second upper plates 230, 210 and 220, respectively.

The elevating mechanism 400 according to an embodiment of the present invention includes a fixed frame 410 coupled to the inside of the horizontal frame 310 and having inclined grooves 411 inclined at a predetermined angle, A moving frame 420 coupled to the bottom surface of the second upper plate 220 and having an inclined surface 422a protruded on one side thereof and a moving frame 420 having one side coupled to the bottom surface of the third upper plate 230, And an elevating frame 430 which is interposed between the moving frame 420 and the elevating frame 430 and moves along the inclined grooves 411 and the inclined surfaces 422a when the moving frame 420 is slid. At this time, it is also possible that an inclined groove 411 is formed in the horizontal frame 310 without a separate fixed frame 410.

4 is a perspective view of a stationary frame according to an embodiment of the present invention.

2 to 4, a bar-shaped fixing frame 410 having a predetermined width, length and thickness can be coupled to the inside of the horizontal frame 310 by, for example, a bolt fastening method, At an upper end of the frame 410, an inclined groove 411 inclined at a predetermined angle is formed.

A horizontal groove 412 having a predetermined depth is extended from one side of the upper end of the inclined groove 411. The horizontal groove 412 extends horizontally with respect to the inclined direction of the inclined groove 411. [ The inclined grooves 411 and the horizontal grooves 412 serve to guide the lifting and lowering direction of the lifting frame 430 and the sliding movement direction of the lifting frame 430. When the first lifting protrusion 431 of the lifting frame 430 is inclined, (411) and the horizontal grooves (412). In order to prevent the lift frame 430 from tilting, a pair of slant grooves 411 and horizontal grooves 412 are spaced apart from each other by a predetermined distance at the upper end of the front end portion and the upper end of the rear end portion of the fixed frame 410 .

5 is a perspective view of a mobile frame according to an embodiment of the present invention.

Referring to FIGS. 2 and 3, the moving frame 420 is installed parallel to the inside of the horizontal frame 310 or the fixed frame 410 by a predetermined distance.

5, the moving frame 420 includes a body 421 in the form of a bar having a predetermined width, length and thickness, and a guide block 422 formed on one side of the body 421 . A coupling block 423 having a predetermined thickness is coupled to one side of the upper surface of the body 421. The coupling block 423 may be coupled to the bottom surface of the first upper plate 210 or the second upper plate 220, The coupling block 423 of the moving frame 420 is coupled to the bottom surface of the second upper plate 220 in the embodiment.

A pair of guide blocks 422 spaced apart from each other by a predetermined distance in the longitudinal direction of the body 421 are coupled to the outer surface of the body 421 by a bolt fastening method, and the body 421 and the guide block 422 Or may be integrally formed.

One side of the guide block 422 is formed with an inclined surface 422a which is inclined in a direction opposite to the inclined grooves 411 of the fixed frame 410. [ In addition, an arc-shaped concave groove 422b is formed on the upper side of the guide block 422 so that the second lift-up projection 432 of the lift frame 430 to be described later is seated.

The moving frame 420 coupled to the bottom surface of the second upper plate 220 by the engaging block 423 also slides integrally with the second upper plate 220 when the second upper plate 220 is slid. At this time, the space formed between the second upper plate 220 and the moving frame 420 due to the thickness of the coupling block 423 functions as a space for accommodating the lowered third upper plate 230.

6 is a perspective view of a lifting frame according to an embodiment of the present invention.

2 and 3, the lifting frame 430 is installed between the fixed frame 410 and the movable frame 420 in parallel with the fixed frame 410 and the movable frame 420, And moves up and down along the fixed frame 410 when the slide is moved. One side of the lifting frame 430 is coupled to the bottom surface of the third upper plate 230 so that the third upper plate 230 is raised and lowered together with the lifting frame 430 when the lifting frame 430 is lifted or lowered.

Referring to FIG. 6, the lifting frame 430 has a bar shape having a predetermined width, length, and thickness. The first lifting protrusion 431 protrudes from one side and the second lifting protrusion 432 extends from the other side. Respectively. One side of the upper surface of the lifting frame 430 is coupled to the bottom surface of the third upper plate 230 by, for example, a bolt fastening method.

The first elevating protrusions 431 are spaced apart from each other in the longitudinal direction on the outer surface of the lifting frame 430 and their ends are inserted into the inclined grooves 411 of the fixing frame 410. The second elevating protrusions 432 are spaced apart from each other in the longitudinal direction on the inner surface of the lifting frame 430 so that the ends of the second lifting and descending protrusions 432 move along the inclined surfaces 422a of the moving frame 420, Respectively.

The first and second lifting protrusions 431 and 432 move up and down along the inclined grooves 411 of the fixed frame 410 and the inclined surfaces 422a of the moving frame 420 when the first and second upper plates 210 and 220 are slid So that the lifting and lowering operation of the lifting frame 430 and the third upper plate 230 is performed.

FIG. 7 is a perspective view of a part of the elevator when the entire length of the upper part is expanded, and FIG. 8 is a sectional view of the elevating part when the entire length of the upper part is expanded.

The table 100 according to an embodiment of the present invention is configured such that when the first upper plate 210 and the upper surfaces of the second upper plate 220 and the third upper plate 230 are disposed in close contact with each other The total length of the upper plate 200 is the longest.

The first lifting protrusion 431 is seated in the horizontal groove 412 of the fixing frame 410 and the second lifting protrusion 432 is attached to the bottom surface of the third upper plate 230. [ Are spaced apart from the guide block 422 of the movable frame 420 in the longitudinal direction.

9 is a perspective view of a part of the elevator when the total length of the upper part is shortened, and Fig. 10 is a sectional view of the elevating part when the total length of the upper part is shortened.

The table 100 according to an embodiment of the present invention is configured such that when the first upper plate 210 and the second upper plate 220 are disposed in close contact with each other, the entire length of the upper plate 200 by the length of the third upper plate 230 The third upper plate 230 is disposed at a lower portion of the first and second upper plates 210 and 220.

Hereinafter, the ascending and descending processes of the third upper plate 230 according to the sliding movement of the first and second upper plates 210 and 220 will be described in detail with reference to FIGS. 7 through 10. FIG.

When the upper plate 200 is viewed in an initial state in which the upper plate 200 is extended to be in close contact with the first upper plate 210, the upper surfaces of the second upper plate 220 and the third upper plate 230 are disposed on the same plane, First, the first and second upper plates 210 and 220 are firstly slid in a direction away from each other along the longitudinal direction of the table 100.

The inclined surface 422a of the guide block 422 moves the second lift projection 432 of the lift frame 430 in the moving direction And the second lifting protrusion 432 pushed by the guide block 422 moves to the upper end of the slanting groove 411 along the horizontal groove 412.

The guide block 422 of the movable frame 420 supporting the second lift projection 432 of the lift frame 430 is moved in the second sliding direction so that the first and second upper plates 210 and 220 are moved closer to each other, The second lift projection 432 is moved downward along the inclined groove 411 by the weight of the lift frame 430. The second lift plate 432 is moved downward along the inclined groove 411 The lowering operation of the third upper plate 230 is performed.

On the other hand, the first and second upper plates 210 and 220, which are slid in a direction approaching each other, cover the upper portion of the third upper plate 230 so that their opposite surfaces are in close contact with each other. That is, the length of the entire upper plate 200 is reduced by the length of the third upper plate 230 because the existing third upper plate 230 is lowered and the first and second upper plates 210 and 220 are in close contact with each other.

When the entire length of the upper plate 200 is reduced and the first and second upper plates 210 and 220 are thirdly slid in the direction away from each other along the longitudinal direction of the table 100, The guide block 422 approaches the second lift projection 432 of the lift frame 430. When the first and second upper plates 210 and 220 are subsequently moved, the second lift projection 432 of the lift frame 430 is lifted along the inclined surface 422a of the guide block 422 and the first lift projection 431 are lifted along the inclined grooves 411 of the fixed frame 410 so that the third upper plate 230 is lifted up. At this time, the second lift projection 432 rising along the inclined surface of the guide block 422 is received in the concave groove 422b of the guide block 422.

The second lift projection 432 of the lift frame 430 caught by the concave groove 422b of the guide block 422 is moved downward by the fourth lift slidably moving in the direction in which the first and second upper plates 210 and 220 approach each other And moves together with the moving frame 420. At this time, the first lift projection 431 of the lift frame 430 goes out of the inclined groove 411 and enters the horizontal groove 412, so that the third upper plate 230 keeps the raised height.

The first and second upper plates 210 and 220 slid in a direction approaching each other are brought into close contact with the longitudinal sides of the third upper plate 230 so that the shape of the upper plate 200 of the table 100 becomes the initial As shown in FIG.

On the other hand, the first upper plate 210 and the third upper plate 230, the third upper plate 230 and the second upper plate 220, and the first upper plate 210 and the second upper plate 220, At least one guide protrusion 240 and guide groove 250 for guiding the approach direction are formed and the guide protrusions 240 are inserted into the guide groove 250 so that the facing surfaces of the guide protrusions 240 can be closely contacted .

For example, as shown in FIG. 2, at least one guide protrusion 240 protrudes from one side (right side in the figure) of the first upper plate, and one side of the third upper plate 230 At least one guide groove 250 may be formed at the corner to guide the approach direction of the first upper plate 210 and the third upper plate 230. At least one guide protrusion 240 protrudes from the other side (right side in the figure) of the third upper plate 230 and at least one guide protrusion 240 protrudes from one edge of the second upper plate 220 The guide grooves 250 can be formed. At this time, when the first upper plate 210 and the second upper plate 220 are brought into contact with each other by sliding movement, the guide protrusions 240 of the first upper plate 210 are engaged with the guide grooves of the second upper plate 220 250).

FIGS. 11 and 12 are views illustrating a sliding movement of the first upper plate and the second upper plate according to an embodiment of the present invention.

In the table 100 according to an embodiment of the present invention, the first upper plate 210 and the second upper plate 220 are slidably moved in mutually opposite directions. That is, when only one of the first upper plate 210 and the second upper plate 220 is slid in one direction, the remaining one slides simultaneously in the opposite direction.

2 and 3, a fixing rail 510 is installed at a lower portion of the upper plate 200 so that the sliding movement of the first upper plate 210 and the second upper plate 220 is facilitated, A movable rail 520 is provided on the bottom surface of the second upper plates 210 and 220 to move along the fixed rail 510. The fixed rail 510 and the movable rail 520 are preferably provided in parallel to each other in the width direction of the table 100.

The fixed rail 510 is installed at a lower portion of the upper plate 200 in the longitudinal direction of the table 100. The fixed rail 510 is disposed between the pair of horizontal frames 310 in parallel with each other in the longitudinal direction of the table 100 And a pair of vertical frames 330 extending in the width direction of the table 100 may be coupled to the vertical frame 330 spaced apart from each other.

A pair of auxiliary frames 340 extending in the longitudinal direction of the table 100 may be coupled between the pair of vertical frames 330 in parallel with each other in the width direction of the table 100, At this time, the fixed rail 510 may be installed above each of the auxiliary frames 340.

The movable rail 520 is coupled to the bottom surfaces of the first and second upper plates 210 and 220 and is integrally moved together with the first and second upper plates 210 and 220 and is slidably coupled to the fixed frame 410 .

At this time, the movable rails 520 of the first and second upper plates 210 and 220 may be staggered along the one fixed rail 510. At one side of the fixed rail 510, It is preferable that the rail 520 is coupled and the movable rail 520 of the second upper plate 220 is coupled to the other side.

A support plate 350 in the form of a rectangular plate having a predetermined width, length, and thickness may be coupled to one side of the auxiliary frame 340 so as to protrude in the direction of the horizontal frame 310. One end of the support plate 350 is coupled to one side of the auxiliary frame 340 and the other end is extended in the direction of the horizontal frame 310 to support the free end of the movable frame 420 It plays a role.

The sliding movement of the first and second upper plates 210 and 220 in the opposite directions interlocked with each other is achieved by a pulley 511 provided at one end of the fixed rail 510 and a first upper plate 210 surrounding the pulley 511, And a wire 512 to which both ends are fixed to the second upper plate 220, respectively.

The pair of fixed rails 510 spaced apart from each other in the width direction of the table 100 are installed parallel to each other on the auxiliary frame 340. The pulley 511 includes a pair of fixed rails 510 And the other end of the other fixed rail 510, respectively. At this time, one end of the wire 512 extends along one side of the fixed rail 510 and is fixed to one side of the first upper plate 210, for example, one side of the movable rail 520, and the other end surrounds the pulley 511 And is fixed to one side of the second upper plate 220, for example, one side of the movable rail 520, along the other side of the fixed rail 510.

When the first upper plate 210 is slid in the direction approaching the second upper plate 220 when the first and second upper plates 210 and 220 are spaced apart from each other, The wire 512 hung on the pulley 511 installed on the left side of the first upper plate 210 pulls the second upper plate 220 in the direction of the first upper plate 210 so that the second upper plate 220 is also automatically moved to the first upper plate 210 ) Direction.

When the first upper plate 210 is slid in a direction away from the second upper plate 220, the wire 512 caught in the pulley 511 provided on the right side of the moving rail 520 of the second upper plate 220 The second upper plate 220 is automatically pulled in a direction away from the first upper plate 210 by pulling the second upper plate 220 in a direction away from the first upper plate 210. [

Meanwhile, in order to limit the sliding distance of the first and second upper plates 210 and 220, a stopper 600 may be formed on the bottom surfaces of the first and second upper plates 210 and 220 so as to protrude downward. In this stopper 600, a separate block-shaped member can be coupled to the bottom surfaces of the first and second upper plates 210 and 220 in a bolt-fastening manner. As another example, the first and second upper plates 210 and 220 and the stopper 600 may be integrally formed.

In the present embodiment, bearings 610 are vertically rotatably installed at both ends of the transverse frame 310, and the bearings 610 are disposed on both sides of the first and second upper and lower plates 210, And supports the bottom surfaces of the upper plates 210 and 220 so as to be slidably movable. The bearing 610 restricts the movement of the stopper 600 when the first and second upper plates 210 and 220 slide while restricting the slide distance of the first and second upper plates 210 and 220. That is, bearings 610 are provided at both ends of the movement path of the stopper 600 when the first and second upper plates 210 and 220 are moved.

13 to 15 are diagrams illustrating the use of a variable length table according to an embodiment of the present invention.

The table 100 according to an embodiment of the present invention is configured such that the first upper plate 210, the second upper plate 220, and the third upper plate 230 are arranged in close contact with each other on the same plane as shown in FIG. At this time, the entire length of the upper plate 200 of the table 100 is maximally expanded.

Then, if it is necessary to reduce the length of the upper plate 200 of the table 100 as needed, the first and second upper plates 210 and 220 are firstly slid in the direction away from each other as shown in FIG. At this time, even if only one of the first and second upper plates 210 and 220 is moved, the other one of the first and second upper plates 210 and 220 is slid in the opposite direction.

Next, as shown in Fig. 14, the first and second upper plates 210 and 220 are secondarily slid in the direction of approaching each other. At this time, the third upper plate 230 descends to the lower portions of the first and second upper plates 210 and 220 by the operation of the elevating device 400, and as shown in FIG. 15, 1 and the second upper plates 210 and 220 are closely connected to each other, the total length of the upper plate of the table 100 is reduced.

When the length of the upper plate 200 of the table 100 is to be reduced to a maximum, the first and second upper plates 210 and 220 are thirdly slid in a direction away from each other. At this time, the third upper plate 230 rises to the space between the first upper plate 210 and the second upper plate 220 by the operation of the elevating device 400, and the first and second upper plates 210 and 220 are close to each other The length of the upper plate 200 of the table 100 can be maximized by moving the first and second upper plates 210 and 220 in close contact with both sides of the third upper plate 230.

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.

100: Table 200: Top plate
210: first upper plate 220: second upper plate
230: third upper plate 310: horizontal frame
400: elevating mechanism 410: stationary frame
420: moving frame 422: guide block
430: lift frame 510: fixed rail
511: Pulley 512: Wire
520: moving rail 600: stopper
610: Bearings

Claims

A first upper plate and a second upper plate provided at the same time to slide in mutually opposite directions, and a second upper plate provided between the first upper plate and the second upper plate to move up and down in association with the sliding movement of the first upper plate and the second upper plate. 3 an upper plate including an upper plate;
A pair of horizontal frames spaced apart from each other in the width direction of the upper plate and installed at a lower portion of the upper plate; And
And a lift mechanism provided on the inner side of the horizontal frame for moving the third upper plate in accordance with the sliding movement of the first upper plate and the second upper plate,
The elevating mechanism includes an inclined groove formed at an inner side of the horizontal frame at a predetermined angle, a moving frame coupled to a bottom surface of the first upper plate or the second upper plate so as to be parallel to the horizontal frame, And an elevating frame coupled to a bottom surface of the third upper plate and interposed between the transverse frame and the moving frame and moving up and down along the inclined grooves and the inclined surfaces when the moving frame is moved.

The method according to claim 1,
Wherein the third upper plate is disposed between the first upper plate and the second upper plate such that when the first upper plate and the second upper plate are firstly slid in a direction away from each other, And ascends when the first upper plate and the second upper plate are thirdly slid in a direction away from each other.

delete

The method according to claim 1,
Wherein the elevating mechanism further comprises a fixed frame coupled to an inner side of the transverse frame and having an inclined groove formed at an upper end thereof.

The method of claim 5,
Wherein the fixed frame includes a horizontal groove formed at an upper end of the inclined groove at a predetermined interval.

The method according to claim 1,
Wherein the movable frame includes a guide block coupled to one surface of the movable frame and having the inclined surface formed on one side thereof.

The method of claim 7,
Wherein the moving frame further includes a concave groove formed on an upper surface of the guide block.

The method according to claim 1,
Wherein the lifting frame includes a first lifting projection protruding from one surface and sliding along the tilting groove, and a second lifting projection protruding from the other surface and slidably moving along the tilting surface.

The method according to claim 1,
A fixing rail installed between the pair of horizontal frames so as to be parallel to the horizontal frame and a bottom surface of the first top plate or the second top plate so as to move along the fixing rail when the first top plate or the second top plate is slid, And a movable rail coupled to the second end of the second table.

The method of claim 10,
A pair of pulleys provided at both ends of the fixed rail and a pair of wires each having one end coupled to one side of the first upper plate and the other end extending around the pulley and coupled to one side of the second upper plate The length of which is variable.

The method according to claim 1,
And a stopper provided on the bottom surfaces of the first upper plate and the second upper plate so as to face the bearings, respectively.