KR200268518Y1 - height adjusting device in table - Google Patents

Abstract

The present invention relates to a desk provided with a height adjustment device, the central shaft 57 is coupled to one side of the guide 55, the rollers at both ends of the central shaft (57) to be transported along the inside of the bracket (43) 58, each provided with a desk having a height adjusting device provided with a packing 53 between the boss 49 and the adjusting rod 50.

Therefore, when the upper plate 41 is lifted upwardly or downwardly, a point contact is made between the bracket 43 and the roller 58 and at the same time the roller 58 is rotated so that the guide 55 moves along the bracket 43. Since it is transported, it is possible to adjust the height of the desk without great effort, so that anyone can easily adjust the height of the desk so that they can learn optimally, and the packing (53) between the adjusting rod (50) and the boss (49) ) Is provided to increase the friction force between them to prevent the adjustment bar 50, the fixed rod 51 and the boss 49 in the state that the desk height is set.

Description

Desk with height adjustment device {height adjusting device in table}

The present invention relates to furniture, and more particularly to a desk equipped with a height adjustment device for adjusting the height of the legs of the desk.

In general, because the desk is designed and manufactured based on the average height of the people who use the desk, and the top and legs are fixedly installed, the height of the desk is small for people larger than the average height and the height of the desk for people smaller than the average height. If they use such a desk, the height of the desk is too low to bend the waist, so that it is impossible to write in a correct posture or the desk is very difficult to write too high.

In order to solve this problem, a desk and a table having a height adjustment device have been developed and used to adjust the length of the desk leg, which is a cylindrical boss (2) fixed to the bottom of the top plate (1) as shown in FIG. ), A guide rod (3) inserted into the boss (2) and formed with a plurality of screw grooves (4) on the outer circumferential surface, and one of the screw grooves (4) of the plurality of screw grooves (4) coupled to the boss (2). Consists of an adjusting bolt (5) fastened to.

Desk or table having such height adjustment device to loosen the adjustment bolt (5) slightly, then lift or lower the top plate (1) and tighten the adjustment bolt (5) again to adjust the height of the legs.

Desk or table with a conventional height adjustment device has a top plate (1) and the boss (2) and the guide bar (3) for supporting it has a straight shape, with the leg structure of this type firmly secure the top plate (1) Failed to support and often fell easily with a slight push back and forth.

In order to solve this problem, the present applicant has developed a desk having a height adjusting device as shown in FIG. 2, which is fixed to both sides of the bottom surface of the top plate 11, and guide jaws are provided on both sides of the open lower part. A bracket 13 formed at a corner between the side surface and the guide jaw along a longitudinal direction thereof; A guide (23) inserted into the bracket (13) and slid along its longitudinal direction and having a screw hole formed in a bottom surface thereof; Hollow bosses 19 which are respectively located under the four corners of the upper plate 11 so as to face the bottom of both ends of the two brackets 13, a lower support 20 which is fixed to the lower end of the bosses 19, and the boss A support leg 18 formed of a connecting table 21 fixedly supported at an upper end of the pairs 19; The upper end is fixedly supported by the guide 23 and is transported along the lower end portion of the adjusting rod 25 inserted into the two front bosses 19 of the four bosses 19; A fixing rod 26 whose upper end is fixedly supported at a corresponding rear end of the bracket 13, and whose lower end is respectively inserted into two rear bosses 19 of the four bosses 19; It has a U-shape to surround a portion of the bottom surface of the bracket 13, a plurality of lancing projections are formed in each of the inner corner portion to correspond to the coupling holes on both sides of the bracket 13, the removable piece having a through hole in the center ( 27); It is made of a control bolt 30 is fastened to the screw hole of the guide 23 to attach and detach the lancing projection of the detachable piece 27 to the engaging hole of the bracket (13).

Therefore, loosen the adjustment bolt 30 slightly, the lancing projections of the detachable piece 27 are separated from the coupling holes of the bracket 13, and in such a state, the upper plate 11 is lifted upward or pressed downward to guide 23 Is moved horizontally along the inside of the bracket 13 while adjusting the height of the desk by vertically moving the adjustment bar 25 and the fixed bar 26 with respect to the boss 19, in this state the height is adjusted Tightening the adjustment bolt 30, the lancing projection of the detachable piece 27 is seated in the coupling hole of the bracket 13, thereby limiting the horizontal transfer of the guide 23 and the adjusting rod 25, so that the height of the desk can be easily adjusted To make it possible.

However, the height adjustment of the conventional desk is made while the guide 23 is conveyed along the inside of the bracket 13, the friction between the bracket and the guide while the surface contact or line contact increases the friction between them was not smooth transfer, Accordingly, the height of the top plate 11 is very difficult to control children, such as the lower grades of elementary school students could not adjust the height of the desk freely.

An object of the present invention for solving the above problems is to provide a desk with a height adjustment device to facilitate the height adjustment of the top plate.

Desk according to the present invention height adjustment device for achieving the above object, a bracket which is fixed to each side of the bottom of the top plate, the guide is inserted into the bracket slides along its longitudinal direction, the bottom of both ends of the two brackets Elevated height adjustment device is provided with a hollow boss which is located at each of the lower four corners of the upper plate so as to face the upper plate, and the upper end is fixed to the guide and is moved along it and the lower end is inserted into each of the two bosses of the four bosses In the desk provided, the central shaft is coupled to one side of the guide, rollers are provided at both ends of the central shaft to be transported along the inside of the bracket, characterized in that the packing is provided between the boss and the adjusting rod. .

Therefore, when the upper plate is lifted upward or downward, the point contact is made between the bracket and the roller, and the roller is rotated so that the guide is moved along the bracket, so that the height of the desk can be adjusted without great effort. The height and height of the desk can be adjusted, and the optimal learning can be performed in such a state.

And, the packing is provided between the adjustment rod and the boss to increase the friction between them to prevent the adjustment rod and the boss from flowing in the state set the desk height.

1 and 2 are a schematic perspective view and an exploded perspective view showing a desk equipped with a conventional height adjustment device

Figure 3 is an exploded perspective view showing a desk equipped with a height adjustment device of the present invention

4 and 5 is a partially enlarged perspective view showing the main portion of the present invention and the separated bottom perspective view

6 and 7 are partial cross-sectional views of the desk equipped with the height adjustment device of the present invention

* Description of the symbols for the main parts of the drawings *

43; Bracket 49; boss

50; Adjusting rod 51; Fixed rod

53; Packing 55; guide

57; Central axis 58; roller

Specific features and advantages of the present invention will become more apparent from the following description with reference to the accompanying drawings.

Figure 3 is an exploded perspective view showing a desk equipped with a height adjustment device of the present invention, which is coupled to the bracket 43 by the rivets 42 on both sides of the bottom surface of the top plate 41, two brackets 43 The adjusting rod 50 and the two fixed rods 51 are coupled, and the support legs 48 are coupled to the lowering of the adjustment rod 50 and the fixed rod 51.

First, as shown in FIGS. 4 and 5, the bracket 43 has a U-shape in cross section, and is provided with an accommodating portion 44 which is open in the lower direction, and both sides of the bottom surface of the upper plate 41. It is fixed to each. And guide jaw 45 is formed on both sides of the lower opening, a plurality of coupling holes 46 are formed at equal intervals along the longitudinal direction at the corner between the side and the guide jaw (45).

The guide 55 is inserted into the housing 44 of the bracket 43 and slides along the longitudinal direction of the housing 44, and a screw hole 56 is formed at the bottom of the guide 55 to be described later. Bolt 63 is fastened to it.

Here, one side of the guide 55 is provided with a central shaft 57 in accordance with the features of the present invention, the rollers 58 are provided at both ends of the central shaft 57 so as to be transported along the inside of the bracket 43.

The support leg 48 is provided with hollow bosses 49 respectively positioned below the four corner portions of the upper plate 41 so as to face the bottom faces of both ends of the two brackets. The lower portion of the bosses 49 are supported by the c-shaped lower support 50, and the upper end of the bosses 49 are fixed with a straight connection rod 51.

Here, the four bosses 49 are provided with male thread portions 49a on the top thereof, and nuts 52 are fastened thereto to maintain the coupling between the adjustment rod 50, the fixed rod, and the bosses 49, and packing portions thereof 53 is inserted to hold them more firmly.

Meanwhile, the two adjusting rods 50 are fixed to the guide 55 so that the upper ends thereof are transported along the guide 55, and the lower ends of the two adjusting rods 50 are front of the four bosses 49. Two bosses 49 are respectively inserted.

Each of the two fixing rods 51 is fixedly supported at the corresponding rear end of the bracket 43, respectively, and the lower end of the fixing rod 51 is respectively attached to two rear bosses 49 of the four bosses 49, respectively. Is inserted.

And the bottom of the bracket 43, the detachable piece 60 is located, the adjustment bolt 63 is fastened to this, the detachable piece 60 has a c-shape to wrap around the bottom portion of the bracket 43, A plurality of lancing protrusions 61 are formed at the inner edge portions so as to correspond to the coupling holes 46 at both sides of the bracket 43, and a through hole 62 is formed at the center thereof.

The adjusting bolt 63 is fastened to the screw hole 56 of the guide 55 to attach and detach the lancing protrusion 61 of the detachable piece 60 to the engaging hole 46 of the bracket 43.

The desk equipped with the height-adjusting device of the present invention having such a configuration requires that the lancing protrusion 61 of the detachable piece 60 is coupled to the coupling hole 46 of the bracket 43 to be used with the height of the desk set. If you adjust the height of the desk according to, loosen the adjustment bolt (63) slightly.

In this way, the detachable piece 60 is conveyed downward by its own weight as much as the adjustment bolt 63 is loosened, and the lancing protrusion 61 of the detachable piece is separated from the coupling hole 46 of the bracket.

Therefore, the guide 55 is slidable within the housing 44 of the bracket 43, and when the upper plate 41 is lifted, the adjusting rod 50 and the fixing rod 51 are vertical to the outside of the boss 49. The guide 55 and the adjusting rod 50 are transferred to the upper end side of the fixing rod 51 along the receiving portion 44 of the bracket 43.

Meanwhile, when the upper plate 41 is pushed downward, the adjusting rod 50 and the fixing rod 51 are further inserted into the boss 49 while the guide 55 and the adjusting rod 50 are transferred to the front side of the bracket 43. do.

Such height adjustment of the desk can be very easily performed by the roller 58, which is a feature of the present invention, when the guide 55 is transferred in the housing 44 of the bracket 43, conventionally, the bracket 13 ) Since the inner surface of the guide 23 is in contact with the surface or line contact a relatively large area, the friction between them is maximized, thereby raising or lowering the top plate 11 is very difficult, but in the present design bracket 43 Since the point contact is made between the roller and the roller 58, the frictional force between them is minimized, so that a large force is not exerted when the upper plate 41 is raised and lowered.

In addition, when the guide 55 is conveyed in the bracket 43, the roller 58 is rotated in the bracket 43 according to the conveying direction, so the frictional resistance therebetween is further reduced, and thus the height adjustment of the desk is easier. Become.

Therefore, the present invention desk equipped with the height adjustment device of the present invention is very easy to lift or lower the top plate 41, anyone can easily adjust to their body shape.

In addition, the desk equipped with the height adjustment device of the present invention is provided with a packing 53 between the control rod 50, the fixed rod 51 and the boss 49, the elastically close support between them, the state set accordingly When learning at, no flow is generated, and no crackling noise is generated.

According to the desk equipped with a height adjustment device according to the present invention as described above, when the upper plate 41 is lifted upward or pressed downward, the point contact is made between the bracket 43 and the roller 58 and at the same time the roller ( 58) is rotated while the guide 55 is moved along the bracket 43, so it is possible to adjust the height of the desk without great effort, and accordingly, anyone can easily adjust the height of the desk to learn optimally. It works.

In addition, the packing 53 is provided between the adjusting rod 50 and the boss 49 to increase the friction force between the adjusting rod 50 and the fixing rod 51 and the boss 49 in the state where the height of the desk is set. ) Is prevented from flowing.

Claims (1)

Brackets are provided on both sides of the bottom of the top plate, the guide is inserted into the bracket and slides along the longitudinal direction, and the hollow boss is located at the bottom of the four corners of the top plate so as to face the bottom of both ends of the two brackets, In the desk equipped with a height adjustment device that the upper end is fixedly supported by the guide is transported along and the lower end is provided with adjustment rods respectively inserted into the two front bosses of four bosses A central shaft 57 is coupled to one side of the guide 55, and rollers 58 are provided at both ends of the central shaft 57 so as to be transported along the inside of the bracket 43, respectively, and the boss 49 is adjusted. Desk having a height adjustment device, characterized in that the packing 53 is provided between the rods (50).