KR200388266Y1 - Apparatus for adjusting the height of a chair and desk - Google Patents

Abstract

The present invention relates to a height adjustment device on a bookcase that is supported by a top plate or a seat plate on a pair of vertical support.

The height adjusting device of the present invention is the upper frame having a pin through hole and a bolt coupling hole on one side, a lower frame formed with a height adjusting groove having a plurality of fixing grooves in one side length direction, and one side of the upper frame The control lever is fixedly coupled to the lever fixing plate of the other side and the rotating lever which is rotated by a predetermined angle on the fixing lever, and the slide pin is mounted in front of the ball and elastically fixed by the spring slide pin on the cylindrical cap There is a technical feature in that the cylindrical cap is composed of an elastic support interconnected to the rear side of the upper frame by a horizontal support frame.

The height adjustment device of the present invention can be easily adjusted the height of the top plate or the seat plate, as well as the effect that can be easily performed by the height of each stage.

Description

Apparatus for adjusting the height of a chair and desk}

The present invention relates to a height adjustment device on a book stand that the upper plate or the seat plate is supported on a pair of vertical support, and more specifically, the adjustment handle separated by upper and lower levers is mounted on the side of the vertical support consisting of upper and lower frames. By a pair of elastic supports connected to the horizontal support frame on the rear side of the upper frame, relates to a height-adjusting device on a bookcase so that the height of the top plate or 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 that are raised in the conventional teaching aid desk and its height adjusting device, and the upper rotary lever of the adjustment knob mounted on the upper frame side on which the upper plate is supported is predetermined. The purpose of the present invention is to provide a height adjustment device for a stool that allows the height of the top plate or the seat plate to be easily adjusted by separating the insert fixing pin coupled to the lower frame by rotating at an angle.

In addition, another object of the present invention is that the elastic support is mounted on the back side of the upper frame is made of the height of the upper frame is easy to adjust the number of stages as the ball flowing in the elastic support is elastically supported in the ball coupling hole of the lower frame To lose.

The above object of the present invention, the upper frame is provided with a pin through hole and a bolt coupling hole on one side, a lower frame formed with a height adjusting groove having a plurality of fixing grooves in one side length direction, and one side of the upper frame Cylindrical cap that has a fixed lever coupled to the lever fixing plate on the other side and the rotating knob which is rotated at a predetermined angle on the upper part of the fixed lever, and a stopper ball mounted on the front and elastically fixed by a spring. The cylindrical cap is achieved by a height adjusting device which is embedded in and is composed of an elastic support interconnected to the rear side of the upper frame by a horizontal support frame.

The lower frame is vertically coupled to its upper end through the lower opening of the upper frame to form a vertical support for supporting both sides of the upper plate.

The height adjustment groove of one side of the lower frame is formed with a fixed groove arranged in a line in the longitudinal direction so as to sequentially correspond to the pin through hole of the upper frame, the stopper ball in the elastic support is mounted on the rear side of the upper frame on the rear side of the lower frame Ball coupling holes are elastically coupled to the outer peripheral surface is provided in a row.

On both sides of the upper frame provided with a pin through hole and a pair of bolt coupling holes on the corresponding side of the side where the height adjustment groove of the lower frame is formed, a fixed lever having a spiral coupling protrusion on the outer circumference surrounds the upper frame and is closely coupled to the lever fixing plate. A rotation lever provided with an insert fixing pin at an inner central portion of the fixing lever is rotatably mounted within a predetermined range.

At this time, the insert fixing pin vertically protruding in the center of the rotary lever is coupled through the insert coupling hole and the pin through hole of the fixing lever at the same time.

On the other hand, the rear side of the upper frame is coupled to each of the horizontal support frame bent end is coupled to the elastic support for the primary transport fixing of the upper frame vertically transported from the upper upper frame, the elastic support is a cylindrical cap A slide pin having a spring interposed therein is inserted therein and a stopper ball inserted into the ball through hole of the upper frame is mounted at the front end of the slide pin.

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

First, Figure 1 is a rear perspective view of a desk equipped with a height adjustment device according to the present invention, Figure 2 is an assembled perspective view of a desk installed with a height adjustment device according to the present invention, Figure 3 is a height adjustment device according to the present invention (A) is a front view of the handle fixed state, (B) is a side view of the handle fixed state.

In addition, Figure 4 is a view showing the operating state of the height adjustment device according to the present invention, (a) is a front view of the handle dismantled state, (b) is a side view of the handle dismantled state.

As shown, the height adjustment device on the subject of the present invention is supported on both sides of the bottom surface of the top plate (P) and the upper frame (10a) is formed with a pair of bolt coupling holes 12, including a pin through hole (11) on one side And, the vertical support consisting of a lower frame (10b) is provided with a height adjusting groove 13 having a plurality of fixing grooves (13a) in the longitudinal direction on one side and a ball coupling hole 14 in a row on the back side ( 10 is a structure in which the elastic support 30 is connected to each other by the control knob 20 and the horizontal support frame 40 separated by the upper rotary lever 25 and the lower fixed lever 21.

The bolt coupling hole 12 of the upper frame 10a is provided in the upper and lower portions of the pin through hole 11, respectively, and the height adjustment groove provided in the lower frame 10b inserted through the lower opening of the upper frame 10a. It is formed so as to coincide with the formation position of (13).

The lower frame 10b has a plurality of ball coupling holes 14 formed in a row on the rear side, and the ball coupling holes 14 are sequentially formed with the ball through holes 15 provided on the upper rear surface of the upper frame 10a. Are arranged at equal intervals to match.

At this time, the upper frame (10a) and the lower frame (10b) is adjusted to vertically control the vertical transfer between the upper, lower frame (10a, 10b) on the upper portion of the vertical support (10) coupled vertically transportable The handle 20 and the elastic support 30 are mounted, and look at in more detail the structure of the control knob 20 and the elastic support 30 as follows.

The adjustment knob 20 is composed of a fixed lever 21 and a rotating lever 25 are rotatably coupled at a predetermined angle are provided with a spiral coupling protrusion (21a, 25a) on the outer peripheral surface and the inner peripheral surface, respectively, the fixed On the other side of the upper frame 10a on which the lever 21 is mounted, a lever fixing plate 27 coupled to the fixing lever 21 by a separate fixing means 28 is provided.

The fixing lever 21 has a pin insertion hole 23 and a bolt insertion hole 24 having the same shape as the pin through hole 11 and the bolt coupling hole 12 of the upper frame 10a, and the bolt A pair of fixing bolts B are inserted through the insertion holes 24 to be in close contact with the side surfaces of the horizontal support 10a.

At this time, the fixing bolt (B) of the bolt insertion hole 24 of the fixing lever 21 and the bolt coupling hole 12 of the upper frame 10a and the lower frame 10b inserted into the upper frame 10a. At the same time coupled to the height adjustment groove 13, the end of the fixing bolt (B) serves as a guide on the height adjustment groove 13 during vertical transport of the lower frame (10b).

In addition, the fixing lever 21 is provided with an extension side portion 22 extending from the outer periphery to the upper frame 13 side, the elliptical lever fixing plate 27 at the end of the extension side portion 22 fixing means such as bolts By being coupled to (28), the fixing lever 21 is mounted on the upper frame (10a) surrounding the upper frame (13).

The rotating lever 25 coupled to the upper part of the fixed lever 21 has a spiral engaging protrusion 25a protruding from an inner circumferential surface thereof so as to be in close contact with the engaging protrusion 21a of the outer circumferential surface of the fixed lever 21 and a spiral engaging protrusion 21a. Rotation at a predetermined angle on the fixing lever 21 in accordance with the spiral angle of the (25a) is coupled so that the locking and unlocking can be repeated on the fixing lever 21.

In addition, an insert fixing pin 26 protrudes from the inner center portion of the rotary lever 25, and the insert fixing pin 26 penetrates the pin insertion hole 23 and the upper frame 10a of the fixing lever 21. The ball 11 and the lower frame 10b are in turn coupled to the fixing groove 13a.

At this time, as shown in FIG. 3, when the fixed lever 21 and the spiral coupling protrusions 21a and 25a of the rotary lever 25 are in close contact with each other to lock the two levers 21 and 25, The end of the insert fixing pin 26 extending inside the rotary lever 25 is commonly coupled to the pin through hole 11 of the upper frame 10a and the fixing groove 13a of the lower frame 10b, so that the upper frame 10a is provided. And the lower frame 10b are vertically fixed.

In addition, when the rotary lever 25 is rotated to one side on the fixed lever 21, the spiral coupling protrusions 21a and 25a of the inner and outer peripheral surfaces of the two members 21 and 25 are dismantled, as shown in FIG. , The revolving lever 25 is retracted in a state coupled to the fixing member 21 and the insert fixing pin 26 of the rotating lever 25 is separated from the fixing groove 13 of the lower frame 10b, thereby The lower frames 10a and 10b maintain the vertically transportable state.

The reference numeral 29 is a separation preventing bolt that is coupled to the insert fixing pin 26 of the rotary lever 25, penetrates through the fixing groove 13a and is coupled to the end side of the insert fixing pin 26 and of the rotary lever It is preferable that the diameter of the bolt head 29a is larger than the diameter of the fixing groove 13a of the lower frame 10b so that the rotating lever 25 is not completely detached from the fixing lever 21 when excessively rotating.

On the other hand, Figure 5 is a side cross-sectional view of the elastic support of the height adjustment device according to the present invention, (A) is a cross-sectional view showing an elastic support state, (B) is a cross-sectional view showing an elastic flow state.

As shown, the elastic support 30 of the height adjustment device according to the present invention is embedded in the slide pin 33 with the spring 32 interposed inside the cylindrical cap 31 and the front of the slide pin 33 It is composed of a stopper ball 35 is attached to the disc-shaped washer 34 at the end and inserted into the ball through hole 15 of the upper frame 10a.

The stopper ball 35 is supported by the slide pin 33 elastically flows in the cylindrical cap 31, the front outer peripheral surface of the stopper ball 35 a plurality of balls formed in a row on the rear side of the lower frame (10b) It is coupled on the coupling hole 14.

The elastic support 30 having such a structure has an upper plate through the upper frame 10a when the upper and lower frames 10a and 10b are maintained in the vertical transport state by the operation of the adjusting knob 20. By the load of (P) is supported through the stopper ball 35 elastically bound to the ball coupling hole 14, the primary height of the vertical support 10 is made.

In addition, the pair of elastic support 30 is mounted on the rear side of each horizontal frame 10a and supported by a horizontal support frame 40 connecting the upper frame 10a.

Next, Figure 6 is a perspective view of a chair equipped with a height adjustment device according to the present invention, the height adjustment device 200 of the present invention on both vertical support 111 supporting the seat plate 110 of the chair 100 As an attached structure, the detailed configuration thereof is the same as that of the desk height adjusting device, which is the above embodiment, and thus the detailed description of the present embodiment will be omitted.

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 desk wants to raise or lower the upper plate of the desk or the seat of the chair, the upper rotary lever 25 of the adjustment knob 20 is rotated to one side as shown in FIG. 4 on the fixed lever 21. When the upper rotary lever 25 is separated and the insert fixing pin 26 at the center of the upper rotary lever 25 is separated from the fixing groove 13a on the lower frame 10b, the upper plate P is applied with an appropriate load. The lower frame 10a, 10b is to be transferred.

At this time, the stopper ball 35 elastically fastened to the elastic support 30 mounted on the rear side of the upper frame 10a during the transfer of the upper and lower frames 10a and 10b on the lower frame 10b. As it is seated on the penetrating ball coupling hole 14, the primary temporary fixing of the upper and lower frames 10a and 10b is made.

As described above, the upper and lower frames 10a and 10b are fixed by the elastic support of the stopper ball 35 embedded in the elastic support 30 to rotate the rotation lever 25 of the adjustment knob 20. When rotating in the opposite direction as shown in Figure 3, when the fixed lever 21 and the rotary lever 25 is in close contact and locked, the insert fixing pin 26 of the rotary lever 25 is advanced to the front end of the lower frame By penetrating the fixing groove 13a of 10b, the height of the top plate of a desk or the seat plate of a chair is adjusted.

As described above, the height adjustment device of the subject innovation of the subject innovation can be easily adjusted the height of the upper plate or the seat plate by rotating the upper rotary lever of the control knob mounted on each side of the vertical support consisting of the upper, lower frames to one side There is an advantage.

In addition, the present invention is equipped with a stopper ball elastic support on the back side of each upper frame is fixed to the upper frame as the stopper ball is elastically supported in the ball coupling hole of the lower frame, so that the height for each stage is easily The effect of action that can be performed is exerted.

1 is a rear perspective view of a desk equipped with a height adjusting device according to the present invention.

Figure 2 is an assembled perspective view of the desk is installed height adjustment device according to the present invention.

3 is a view showing the operating state of the height adjustment device according to the present invention,

(A) is the front view of the handle fixed state,

(B) is a side view of the handle fixing state.

4 is a view showing the operating state of the height adjustment device according to the present invention,

(A) is the front view of the handle disassembly state,

(B) is a side view of handle dismantling state.

Figure 5 is a side cross-sectional view of the elastic support of the height adjustment device according to the present invention,

(A) is a cross-sectional view showing an elastic support state,

(B) is sectional drawing which showed the elastic flow state.

Figure 6 is a perspective view of a chair equipped with a height adjustment device according to the present invention.

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

                10a, 10b Upper and lower frame 13. Height adjusting groove

                20. Adjustment knob 21. Locking lever

                25. Rotary lever 26. Insert fixing pin

                27. Lever fixing plate 30. Elastic support

                35. Stopper Ball 40. Horizontal Support Frame

Claims (5)

In the height adjusting device which is supported on both sides of the upper plate of the desk or the seat plate of the stool and is mounted on the side of the vertical support divided into upper and lower frames, a pin through hole 11 and a pair of bolt coupling holes on one side thereof ( 12 is provided with an upper frame 10a, and a height adjusting groove 13 having a plurality of fixing grooves 13a in one side length direction is formed, and a plurality of ball coupling holes 14 are provided in a row on the rear surface. The lower frame 10b, the fixed lever 21 and the rotating lever 25 provided with spiral coupling protrusions 21a and 25a on the outer and inner circumferential surfaces of the upper frame 10a, respectively. The rear side of the fixing lever 21 is in close contact with the side, and the adjustment handle 20 coupled by the lever fixing plate 27 and the fixing means 28 mounted on the other side thereof, and mounted on the rear side of the upper frame 10a. Slide pin 33 is embedded in the state that the spring 32 is interposed in the cylindrical cap 31 is Height-adjustable desks and chairs of the device, characterized in the group consisting of a slide pin 33, the front end a disk-shaped washer 34 and the stopper ball 35. The elastic holder 30 is coupled to. According to claim 1, wherein the fixing lever 21 has an insert coupling hole 23 is formed in the center and the upper and lower bolt insertion hole 24 is provided in the bolt insertion hole 11 and the bolt coupling hole 12 The height adjusting device on the bookcase, characterized in that the close contact with the upper frame (10a) side by the fixing bolt (B) penetrating through. According to claim 1, The rotary lever 25 is an insert fixing pin 26 which is commonly coupled to the insert coupling hole 23 of the fixing lever 21 and the pin through hole 11 of the upper frame 10a in the inner center portion. Height adjustment device on a bookshelf characterized in that the protrusion is formed. The height adjustment device of claim 3, wherein the insert fixing pin (26) is equipped with a separation prevention bolt (29) at an end thereof. The height adjustment device of claim 1, wherein the pair of elastic supports (30) are supported by horizontal support frames (40) at both ends of which are bent.