KR200386548Y1 - Apparatus for adjusting the height of a chair and desk - Google Patents

Abstract

The present invention relates to a height adjustment device installed on the vertical support that the top plate and the seat plate are supported.

The height-adjusting device according to the present invention includes an upper frame 11 having a height adjusting groove 12 having a plurality of locking jaws 12a, and a guide bush 16 mounted on the upper inner circumferential surface thereof, Lower frame 13 having a handle coupling hole 14 and a bending end binding hole 15 at a lower side thereof, and upper and lower bending ends 20 and 21 are caught by the upper frame 11. The “c” shaped fixing bracket 19 which is fastened to the bent end binding hole 15 of the jaw 12a and the lower frame 13 and has a bracket through hole 19a at the center thereof, and the fixing bracket ( The bracket guide hole 19a of the 19 and the handle guide bar 17 protruding to the inner center on the handle coupling hole 14 of the lower frame 13 consists of an adjusting knob 18 sequentially coupled through There is a characteristic.

The height adjustment device on the subject of the present invention has the advantage that the user can easily adjust the height as needed, and also has the advantage that the occurrence of friction noise by the guide bush.

Description

Apparatus for adjusting the height of a chair and desk}

The present invention relates to a height adjusting device attached to the vertical support that the upper plate and the seat plate is supported, more specifically, the upper and lower adjustment brackets are mounted on the side of the vertical support divided into upper and lower frames, It relates to a height adjuster on a bookcase so that the height of the seat plate can be easily adjusted.

In general, the precinct bookshelf that is mainly used in elementary, middle and high schools of the high school is composed of a rectangular top plate or a seat plate fixed to the upper left and right support, and the user holds the top plate while sitting on the seat plate. The learning is made by using, most desks are formed integrally with the support for supporting both sides of the top plate and the top plate itself is fixed to the top of the support.

As described above, the conventional bookcase where the height of the top plate and the seat plate are fixed is used to fit the body shape on the desk or to attach an auxiliary device to the lower end of the leg on the booklet rather than having students of various body types select the desk suitable for the body type. Only adjustment of is made.

In the above case, the taller users are not only uncomfortable with the sitting position because of the length of the legs, but the shorter users may not be able to reach the ground. There is a problem that a significant crowd occurs in the development of the body, including the spine.

In addition, in most elementary, middle, and high school classes, many students are using large or small book benches compared to their body sizes. The situation is spreading.

In addition, the desk recently released for home is equipped with a height adjustment device that allows users with different body types to adjust the height of the top plate according to their body shape, so that the user can adjust the height of the top plate to the height of the chair. The home desk is sold at a very high price and the size of the bookcase is large, which makes it difficult to use a large number of students in each class.

On the other hand, students who need to spend most of their time at school are given a bookshelf suitable for their body type and their physical adaptability is urgent. Since it is impossible to do so, it would be most desirable to provide a stool that can adjust the height of the top plate.

Therefore, the present invention has been devised to solve the above-mentioned disadvantages and problems raised in the height adjustment device on the conventional bookshelf, by rotating the adjustment knob mounted on both vertical support consisting of the upper and lower frames to the inside of the adjustment handle The purpose of the present invention is to provide a height adjusting device on a bookshelf to adjust the height of the upper plate and the seat of the bookshelf by binding the upper and lower bent ends of the fixed bracket coupled to the upper frame and the lower frame, respectively.

The object of the present invention, the upper frame is provided with a height adjustment groove provided with a plurality of locking jaws in the longitudinal direction, the guide bush is inserted through the upper opening and the handle coupling hole and the bent end binding hole is provided on one side of the upper end; An adjustment handle into which a lower frame, a handle guide bar protruding from the inner center through the handle coupling hole is inserted, and interposed between the control handle and the lower frame side part, the upper and lower bent ends of the upper frame locking jaw and the lower frame. It is achieved by a height-adjusting structure on the bookcase consisting of a fixed bracket of "-" shaped to be respectively attached to the bent end binding hole.

The upper frame is formed through the height adjustment groove in one side lengthwise direction and a plurality of locking jaws are formed in multiple stages at equal intervals, the lower end is inserted vertically through the upper opening of the upper frame.

The lower frame is equipped with a "b" shaped fixing bracket which is screw-coupled to the handle guide bar of the adjustment handle through one side handle coupling hole and tightly coupled to the lower frame side of the inner side of the adjustment handle.

The fixing bracket is fixed to the upper portion of the upper frame as the handle guide bar of the adjustment handle is coupled through the bracket through hole and the handle coupling hole.

In addition, the guide bush tightly coupled to the upper inner circumferential surface of the lower frame guides the conveying path during vertical conveyance of the upper frame tightly inserted into the inner circumferential surface and prevents friction noise between the transfers by preventing friction between frames made of steel. do.

On the other hand, the operation of the desk height adjustment device is tightening the adjustment knob of one side of the lower frame while the upper frame is mounted on the lower frame, the upper and lower bent ends of the upper and lower bending ends as the fixing bracket inside the adjustment handle is in close contact with the lower frame side As the locking jaw of the lower frame and the bent end of the lower frame is inserted into each of the fixing of the upper frame is made, if the control knob is rotated oppositely, the fixing brackets that are in close contact with the upper side of the lower frame and the inner side of the handle and the lower frame There is a technical feature that the separation to the space is configured to enable the vertical transport of the upper frame.

At this time, the handle guide bar insertion end side of the adjustment handle penetrated into the upper, lower frame is preferably configured so that the handle is separated from the upper, lower frame by the plate-shaped guide bar support bracket is coupled.

Matters relating to the operational effects including the technical configuration for the above purpose of the height adjusting device on the subject innovation will be clearly understood by the following detailed description with reference to the drawings in which preferred embodiments of the subject innovation are shown.

First, Figure 1 is a perspective view of the desk is installed height adjustment device according to the present invention, Figure 2 is a partial cutaway perspective view of the desk height adjustment device according to the present invention, Figure 3 is an assembled perspective view of the height adjustment device according to the present invention 4 and 5 are cross-sectional views of the height adjustment device according to the present invention, Figure 4 is a cross-sectional view of the upper frame is fixed, Figure 5 is a cross-sectional view of the vertical frame of the transfer possible state.

As shown, the desk height adjustment device 10 of the present invention is the upper frame 11 and the upper inner circumferential surface formed on one side of the height adjusting groove 12 is provided with a plurality of engaging jaw (12a) at equal intervals A guide frame 16 is inserted and a lower frame 13 having a handle coupling hole 14 and a bending end binding hole 15 at a lower side of the upper side of the side corresponding to the height adjusting groove 12; The handle knob 18 protrudes through the handle coupling hole 14 to the inner center portion, and is interposed between the control handle 18 and the side surface of the control handle 18 and the lower frame 13. The bent ends 20 and 21 are fixed to each other by the "b" shaped fixing brackets 19 which are fastened to the engaging jaw 12a of the upper frame 11 and the bent end binding holes 15 of the lower frame 13, respectively. It is composed.

The upper frame 11 is coupled to the lower portion of the lower frame 13 to the vertical transfer through the upper opening, the height adjustment groove 12 is formed in a predetermined width on one side of the height adjustment groove 12 In the longitudinal direction of the engaging jaw 12a is provided at equal intervals.

In the lower frame 13 to which the upper frame 11 is vertically coupled, the guide bush 16 is tightly coupled to the upper inner circumferential surface, and the lower end of the upper frame 11 is slidingly coupled thereto.

In addition, the lower frame 13 has a handle coupling hole 14 is formed on one side of the upper side, that is, the side corresponding to the side on which the height adjustment groove 12 of the upper frame 11 is formed and cut in the horizontal direction thereunder. The bent end binding hole 15 is formed.

On the handle coupling hole 14 of the lower frame 13, the handle guide bar 17 protruding from the center portion of the adjusting handle 18 is penetrated, and an insertion end thereof opens the height adjusting groove 12 of the upper frame 11. Through the upper frame 11 is coupled through.

At this time, the upper frame 11 is configured to be able to move up and down by the length of the height adjusting groove 12 about the handle guide bar 17 in a vertically coupled state to the lower frame (13).

On the mounting side of the adjustment handle 18 of the lower frame 13, a bracket through hole 19a is provided at a position corresponding to the handle coupling hole 14, and the upper and lower ends of the “c” shaped fixing bracket ( 19) This insert is mounted.

The fixing bracket 19 has an upper bending end portion 20 on the locking jaw 12a of the height adjustment groove 12, and a lower bending end portion 21 on the bending end portion binding hole 15 on one side of the lower frame 13. Is inserted into the handle guide bar 17 of the adjustment knob 18 through the bracket through hole (19a) at the same time through and coupled to the handle coupling hole 14, the adjustment handle 18 and the lower frame 13 one side Detachable between.

At this time, the upper bent end portion 20 of the fixing bracket 19 is to be fastened on the locking step 12a of the upper frame 11 mounted inside the lower frame 13, the binding hole of the lower frame 13 It is formed longer by the thickness of the outer circumferential edge of the guide bush 16 than the lower bent end 21 that is bound to (15).

On the other hand, the plate-shaped guide bar support bracket 22 is coupled to the end of the handle guide bar 17 of the control handle 18 mounted through the upper frame 11 and the lower frame 13, thereby adjusting the handle 18 Repeated tightening and loosening of the) guide bar 17 serves to prevent the end of the upper and lower frames 11, 13 from being separated.

Next, Figure 6 is a perspective view of another embodiment according to the present invention, the height adjustment device 10 of the present invention is installed on both vertical support 111 supporting the seat plate 110 of the chair 100, The configuration is the same as the desk height adjusting device of the embodiment.

Looking at the operation process of the present invention the bench height adjustment device made of such a structure as follows.

First, when the user on the bookshelf wants to raise or lower the upper plate of the desk or the seat of the chair, the adjustment knob 18 and the lower frame 13 are rotated by rotating the adjustment knob 18 in one direction as shown in FIG. After the space between one side is formed, the upper and lower bent ends 20 and 21 attached to the upper frame 11 and the lower frame 13 are removed to fix the bracket 19 to the lower frame 13. Allow phase to separate.

Then, by moving the upper frame 11 vertically to position the upper plate to the desired height, the adjustment knob 18 is rotated in the opposite direction to tighten the side of the lower frame 13 so that the fixing bracket 19 is lowered Closely coupled to the side of the frame (13).

At this time, the upper and lower bending end portion 20, 21 of the fixing bracket 19, the binding end of the upper end of the upper frame 11 and the bending end of the lower frame 13, the binding hole of the lower frame 13 It is a structure that the height of the upper plate of the desk or the seat plate of the stool is adjusted by being in close contact with (15).

As described above, the height adjustment device on the subject of the present invention is the height of the vertical support by rotating the adjustment knob mounted on the side of the vertical support consisting of upper and lower frames, the fixing bracket coupled to the inner side is detached from the lower frame side As a structure to be adjusted, there is an advantage that the user can easily adjust the height of the top plate selectively.

In addition, the present invention is expected to have an effect of preventing the transfer noise between the frame by preventing the contact with the upper frame vertically flowing in the lower frame is mounted on the upper inner peripheral surface of the lower frame.

1 is a perspective view of a book installed with a height adjusting device according to the present invention.

Figure 2 is a partial cutaway perspective view of the desk height adjustment device according to the present invention.

Figure 3 is an assembled perspective view of the height adjustment device according to the present invention.

4 and 5 are cross-sectional views of the height adjustment device according to the present invention,

4 is a cross-sectional view of the upper frame is fixed,

Figure 5 is a cross-sectional view of the vertical transfer of the upper frame.

Figure 6 is a perspective view of another embodiment of a height adjusting device according to the present invention.

((Explanation of symbols for main parts of drawing))

                 11. Upper frame 12. Height adjustment groove

                 12a. Jam step 13. Lower frame

                 15. Bending end binding hole 16. Guide bush

                 17. Handle bar 18. Adjustable handle

                 19. Fixed Bracket

Claims (3)

In the height adjustment device of the bookcase combined with the upper plate of the desk or the seat plate of the bench on the top of a pair of vertical support consisting of upper and lower frames, the upper frame formed with a height adjusting groove 12 having a plurality of locking jaws (12a) 11 and a lower frame having a guide bush 16 mounted on the upper inner circumferential surface and having a handle coupling hole 14 at a side corresponding to the height adjusting groove 12 and a bending end binding hole 15 at a lower portion thereof. 13 and the upper and lower bent ends 20 and 21 are respectively bound to the engaging jaw 12a of the upper frame 11 and the bent end binding hole 15 of the lower frame 13, and the bracket penetrates the center part. A through-hole "c" shaped fixing bracket 19 provided with a ball (19a), through the bracket through hole (19a) of the fixing bracket 19 and the handle coupling hole (14) of the lower frame (13) sequentially Height adjustment device on a bookcase, characterized in that consisting of an adjustable handle 18 is provided with a handle guide bar (17) to. The height adjustment device of claim 1, wherein the fixing bracket (19) has an upper bent end (20) longer than the lower bent end (21) by the thickness of the outer periphery of the guide bush (16). The height adjustment device of claim 1, wherein a plate-shaped guide bar support bracket (22) is coupled to an end side of the handle guide bar (17) of the adjustment handle (18).