KR101862656B1 - Height control device of a chair and desk - Google Patents

Abstract

The present invention discloses a height control device of a chair and a desk, comprising: a fixing tool (310); a support member (320); and a finishing cap (330), thereby capable of quickly and easily adjusting the height of the chair and the desk, and preventing loss of parts composing the height control device in advance.

Description

[0001] HEIGHT CONTROL DEVICE OF A CHAIR AND DESK [0003]

The present invention relates to a height adjustment device for a floor and a top pipe, wherein a leg is separated from a lower pipe and an upper pipe, wherein the fixing pin is fixed to a height adjusting hole having a desired height among a plurality of height adjusting holes formed in the upper pipe, And the upper and lower pipes are fixed while the fixture is supported on the step formed on the inner circumferential surface of the support member when the pipe is lowered, thereby fixing the desk top to a desired height.

Generally, a chair and a desk for a normal school which are mainly used in schools of elementary, middle, and high schools are structured such that a rectangular top plate or a seat plate is fixed on the upper left and right support bases, Most of the desks are made of a structure in which supports supporting both sides of the upper plate are integrally formed or accessories such as drawers are attached and the upper plate itself is fixed at the upper end of the support.

As described above, the conventional desk having the fixed height of the upper plate has a problem in that a user who is taller is inconvenient in sitting position due to the length of the leg, and in the case of a user having a small height, the legs do not touch the ground, In addition, there is a problem that when a student lives for a long period of time due to studying using a top board, a significant increase in body development including a spinal column occurs in the growing period.

In order to solve such a problem, disclosed in Korean Utility Model Registration No. 20-0163659 entitled "desk leg height adjusting device ", which is disclosed in Korean Registered Utility Model No. 20-0163659, a bolt is loosened and then the height of the height adjusting rod is adjusted. So that the user can fix the desk to a desired height.

However, since the head of the bolt and the nut fixedly coupled to the other side of the bolt are exposed to the outside, the user can wear the bolt or the nut by abrasion, and remove the bolt The upper support member is suddenly moved to the lower side, thereby threatening the safety of the user or pulling out the adjustment member. Thus, there is a fear that the adjustment member is completely dislocated and lost, and the user can sensibly find the hole through which the bolt is inserted, There is a problem in that it is not easy to adjust the height since the supporting member must be fixed.

In order to solve such a problem, the "height and breadth adjusting device of the desk and chair" of Korean Patent Registration No. 10-1358077 (see FIG. 2) invented by the present applicant has a lower support member 10 connected to the legs of a desk or a chair An upper support member 20 fitted to the lower support member and slidable up and down and supporting an upper plate or a chair of a desk, and an upper support member 20 formed in a shape corresponding to the lower support member, And a fixing member (30) which is fitted to the fixing member (30) and is formed in a shape corresponding to the fixing member, and is slidably coupled to the outer surface of the upper supporting member so as to be slidable up and down, And a finishing cap 40 for preventing the bolts 60 and the nuts 61 from being exposed, loosened and released while covering the outer surface of the finishing cap 40. The finishing cap 40, The bolts 60 and the nuts 61 for preventing the bolts 60 and the nuts 61 from being loosened, lost or exposed can be prevented by lowering the bolts 60 to the lower support member 10 and surrounding the outer circumferential surface of the fixing member 30, .

However, in the above-described height adjusting device, bolts are inserted in a state where the fastening holes, the first height adjusting holes and the second height adjusting holes are aligned when the lower supporting member and the fixing member are coupled, Since the bolts and nuts fastened to the two fixing members must be loosened, it takes a long time to work and care has to be taken so that the separated nuts are not lost.

Disclosure of the Invention The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide an apparatus and a method for adjusting a height and a height of a desk, The present invention has been made to solve the above problems.

In order to achieve the above-mentioned object, the present invention provides a height adjusting device for a legroom separate from a lower pipe and an upper pipe, wherein the leg is connected to a desk or a leg support leg, A lower pipe, and an upper pipe slidably inserted into the lower pipe and having a plurality of height adjusting holes formed at upper and lower ends at predetermined intervals on an outer circumferential surface thereof and connected to an upper plate or a stool of the desk, The apparatus includes a fixture formed in a shape corresponding to the upper pipe so as to be fitted in an outer circumferential surface of the upper pipe and having one side opened and a fixing pin inserted into the height adjusting hole at one side of the inner circumferential surface, A hollow hollow shape having a predetermined width along the circumference of the inner circumferential surface And the upper portion is formed to be wider than the anti-shake portion and is inserted into the fixture insertion portion to insert the fixture, And a sliding member which is slidable upward and downward from the upper pipe and is formed in a shape corresponding to the support member, the interior of which is hollow and the bottom surface is opened so as to be lowered from the upper pipe to surround the outer peripheral surface of the fixture insertion unit, And a finishing cap which cuts off the clearance between the upper pipe and the lower pipe and protects the supporting member and the fixing member, wherein the fixing pin is inserted into the height adjusting hole of a desired height among the plurality of height adjusting holes, When lowering the upper pipe, A first fitting groove is formed on one side of the upper portion of the lower pipe and a second fitting groove is formed on an inner circumferential surface of the first fitting groove so as to be inserted into the first fitting groove The first fastening protrusion is formed on the outer circumferential surface of the lower pipe so as to be slidably engaged with the outer circumferential surface of the lower pipe. The outer circumferential surface of the fastening protrusion is inclined at a predetermined angle. A second fitting groove is formed on one side of the finishing cap, a second fitting groove is formed on one side of the fixing fitting insertion portion, and a second fitting groove, which is fitted in the second fitting groove and whose outer circumferential surface is inclined at a predetermined angle, Wherein a coupling portion is formed in which a locking projection is formed, So that when the finishing cap is slidably engaged, the inclined surface of the second locking protrusion deflects the fitting portion backward by a predetermined angle while guiding the finishing cap, and then the second locking protrusion is elastically coupled to the second fitting groove So that a binding force can be ensured.
The lower pipe and the upper pipe are formed in a rectangular shape with rounded ends at both ends. The fixing pipe is made of a synthetic resin material having elasticity, and has a rectangular shape with both ends rounded so as to surround the outer peripheral surface of the upper pipe An opening portion formed by a predetermined length is formed on the front surface so that the upper pipe is drawn in. The opening of the opening portion is formed to be gradually narrowed in width from the inside to the outside end, And after being fastened, is restored to its original state by an elastic force, and fixed firmly to the upper pipe, thereby preventing it from being arbitrarily disengaged.

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Further, in the present invention, a fixing hole is formed on one side of the upper portion of the lower pipe, and a reinforcing piece having a shape of " H "is protruded at a predetermined thickness on the outer peripheral surface of the shake prevention portion, And the lower pipe and the support member can be fixed through the bolt connection.

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In the present invention as described above, since the fixing pin of the fixture is inserted into the height adjusting ball of a desired height, and the desk or the stool of the desk is pressed, the desk can be set at a desired height, so that the students can easily and easily raise and lower the desk Can be adjusted.

Further, the present invention is advantageous in that the lower pipe can be prevented from shaking through the support, and the upper pipe can be prevented from shaking through the fastener, thereby facilitating manufacture and maintenance.

Also, the present invention can solve the problems such as loss of function due to loss or damage of parts, cost loss due to parts purchase, and the like by protecting the height adjusting part including the supporting member and the fixing member through the finishing cap.

Figs. 1 and 2 are views showing an example of a device for adjusting the height of a bookcase in accordance with the prior art. Fig.
Figs. 3 to 4 are views showing an example of a desk to which a leg portion and a height adjusting device according to the present invention are applied. Fig.
5 is an illustration of an example of a fastener according to the present invention.
Figures 6 to 8 are illustrations of support members according to the present invention.
Figure 9 is an illustration of a closure cap according to the present invention;
10 is an exemplary view of a stool to which a leg portion and a height adjusting device according to the present invention are applied.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in detail with reference to the accompanying drawings.

The present invention relates to a device for adjusting height of a bookcase in which a leg portion separated by a lower pipe and an upper pipe is provided. Anyone can easily adjust the height of the bookcase, and by finishing the height adjusting portion with a finishing cap, The present invention relates to a height adjusting device for a desk and a chair, which can increase aesthetics without fear of loss.

In order to achieve the above-mentioned object, the present invention is characterized in that the upper pipe is inserted into the lower pipe so as to be slidable up and down, and the upper pipe is fixed to the upper pipe at a predetermined position, And a height adjustment device 30 for adjusting the height of the display device. In order to facilitate the understanding of the present invention, the legs and the height adjusting device are provided to easily adjust the height of the upper plate.

3 to 4 are schematic illustrations for explaining the leg portion 20 according to the present invention.

The lower pipe 210 is connected to the supporting leg 12 of the desk and has a hollow structure with an inner hollow so that the upper pipe 220 is inserted into the upper pipe 220 and smoothly flows upward and downward , A circular or elliptical shape, or a rectangular shape in which both ends are rounded.

The upper pipe 220 is connected to the upper plate 11 of the desk and is inserted into the lower pipe 210 with a gap therebetween and is vertically slid. The upper pipe 220 has a hollow structure corresponding to the lower pipe, A plurality of height adjustment holes 221 are formed at upper and lower ends at predetermined intervals. The height adjusting holes 221 are formed to be about 5 to 8 in intervals of about 2 to 3 cm, and can be adjusted to a width of about 15 to 25 cm, and the number of the height adjusting holes 221 can be increased or decreased as needed. For example, for younger students who have a small change in height, their width can be reduced, and for older students who have a wide range of height changes, their width can be increased.

Next, the height adjusting device 30 according to the present invention mainly includes a fixture 310, a support member 320, and a finishing cap 330.

5, the fixture 310 is formed in a shape corresponding to the upper pipe 220 and is open at one side so as to be coupled to the upper pipe 220 so as to surround the outer circumference of the upper pipe 220, And a fixing pin 311 that is fitted in the inner circumferential surface of the base plate 221 is provided.

For example, as shown in FIG. 4, the upper pipe 220 may have a rectangular shape with both ends rounded. The fixing pipe 310 may have a rectangular shape with both ends rounded, An opening 312 may be formed in the front surface of the body 310 to cut the body 310 into a predetermined length.

In this case, the opening of the opening 312 is formed to have a gradually narrower width from the inside to the outside end, and is fixed to the upper pipe while expanding outwardly at the time of forced fit, and is restored to its original state by the elastic force after fastening It can be fixed firmly to the upper pipe, so that it can be prevented from being arbitrarily detached.

The fixture 310 may be formed of a material having strength and elasticity (for example, synthetic resin material) so that the fixture 310 can be snugly fitted to the outer circumferential surface of the upper pipe 220. When the fixture 310 is prevented from being short- It is preferable that it is formed to have a predetermined thickness.

6 to 8, the support member 320 has a hollow shape with an empty interior. The support member 320 is formed with a step 3210 having a predetermined width along the circumference at one side of the inner circumferential surface, And the lower space of the step is formed with an anti-shake portion 3220 formed in a shape corresponding to the lower pipe, and the upper space of the step is formed with a recess And a fixture insertion portion 3230 formed to be wider than the shake prevention portion.

The support member 320 may be made of a synthetic resin (e.g., plastic) having lubricating properties to smoothly insert the lower pipe 210 and the lower pipe 210 when the lower pipe 210 is in the tightened state.

The anti-shake portion 3220 is fixedly secured to the lower pipe 210.

The anti-shake portion 3220 is formed to have a predetermined length and thickness so as to sufficiently enclose the upper portion of the lower pipe, to secure a binding force, 3221 are protruded. The reinforcing pieces 3221 may be formed at a plurality of intervals along the inner circumferential surface.

In addition, a rectangular first fitting groove 211 is formed at one side of the upper portion of the lower pipe so that the lower pipe 210 can be tightly coupled with the anti-shake portion 3220 and the anti-shake portion 3220 The first engaging protrusion 3222 may be formed on the inner circumferential surface of the first engaging groove 211 to be fitted into the first fitting groove 211.

The shape of the first fitting groove 211 and the first locking protrusion 323 is not limited to the right scope of the present invention. However, when the lower pipe is drawn into the anti-shake portion, The outer circumferential surface may be inclined at a predetermined angle or rounded. For example, when the first locking protrusion 3222 having an outer peripheral surface inclined at a predetermined angle as shown in FIG. 8 is protruded from the inner circumferential surface of the anti-shake portion 3220, the lower pipe 210 is inserted into the first locking protrusion 323, And can be drawn into the anti-shake portion 3220 while sliding smoothly along the slope of the anti-shake portion 3220. When the lower pipe 210 is inserted into the anti-shake portion 3220, the shake-resistant portion 3220 is expanded outward by the first locking protrusion, and the first locking recess 3222 is formed in the first fitting groove 211, The binding force can be restored to the original state by the elastic force so that the binding force can be further strengthened.

In the present invention, a fixing hole (not shown) is formed on one side of the upper part of the lower pipe 210, and a reinforcing piece 3223 having a shape of '∩' is protruded to a predetermined thickness on the outer peripheral surface of the anti- A bolt hole 3224 may be formed in the center of the reinforcing member at a position communicating with the fixing hole. When the support member 320 and the lower pipe 210 are coupled to each other by bolts so as to penetrate the bolt hole 3224 and the fixing hole of the lower pipe when the support member 320 and the lower pipe 210 are coupled, It can be firmly fixed.

The step 3210 is formed along the circumference at the center of the inner circumferential surface of the support member 320 to support the downward movement of the upper pipe 220 by supporting the fastener 310 drawn in from the upper end, (210) and the fixture (310) that is seated on the upper side.

The step 3210 may be formed to have a predetermined width so as to sufficiently secure an area for supporting the bottom surface of the fixing member 310 so that the fixing member stably stays without staggering. It is preferable to have a predetermined thickness so that it can be closely adhered while sufficiently absorbing impact.

The fastener insertion portion 3230 is a space portion communicating with the anti-shake portion 3220. The fastener insertion portion 3230 is positioned inside the step 3210 with the fastener 310 inserted therein, The upper pipe 220 may pass through the step 3210 and be located inside the anti-shake portion. The fixture insertion portion 3230 is formed to be wider than the anti-shake portion 3220 to prevent frictional contact between the lower surface of the lower pipe 210 and the metal surface of the upper pipe 220, can do.

The inner surface of the fixture inserting portion 3230 is formed with a reinforcing protrusion 3231 protruding to fill the gap with the fixture. For example, as shown in FIGS. 6 to 7, reinforcing pieces having a predetermined thickness in a direction perpendicular to the inner circumferential surface of the fixing portion may be formed, It is possible to form a plurality of fixtures at regular intervals along the edge of the part so that the fixture can be more stably supported.

The finishing cap 330 is formed into a rectangular shape having both ends rounded so as to correspond to the supporting member 320. The finishing cap 330 is hollow and has a bottom open, The edge of the insertion groove is formed of a contact end 332 contacting with the upper pipe in a state of having a slight clearance, and the outer surface of the body may be flat or may have a decorative pattern or the like have.

The finishing cap 330 is inserted into the upper pipe 220 so as to be slidable up and down. When the elevation of the bookcase is adjusted, the lower end of the finishing cap 330 descends from the upper pipe, To be wrapped.

The clearance between the support member 320 and the upper pipe 220 is removed so that the upper plate 11 and the upper pipe 220 can be prevented from being shaken when the desk is in use when the finishing cap 330 is fitted so as to surround the outer circumferential surface of the fixture insertion portion. Thus, it is possible to solve problems such as loss of function due to loss or damage of parts or loss of cost due to parts purchase.

The finishing cap 330 may be made of a synthetic resin (e.g., plastic) having a lubricating property and a predetermined strength and elasticity so as to be smoothly inserted into the fixture insertion portion 3230 and to be engaged.

Further, in the present invention, a rectangular second fitting groove 333 is formed on one side so that the finishing cap can be detachably coupled to the fixing member insertion portion, and a second fitting groove 333 is formed at one side of the fixing member insertion portion, 2 engaging portion 3232 may be formed.

In this case, the engaging portion 3232 is vertically cut to have a predetermined fluidity, and the outer circumferential surface of the second locking protrusion 3233 is inclined at a predetermined angle so that the finishing cap 330 is slidably engaged The inclined surface of the second locking protrusion 3233 smoothly guides the finishing cap 330. The engaging portion 3232 is bent backward by a predetermined angle while contacting the inner circumferential surface of the finishing cap 330, The engaging protrusion 3233 is elastically coupled to the second fitting groove 333, so that the binding force of the finishing cap can be secured.

The end cap 330 can be detached from the second fitting groove 333 by pressing the second locking protrusion 3233 with a flat tool (for example, a driver). Therefore, it is possible to prevent the young students from separating the finishing cap 330 with their bare hands, thereby solving the problems such as loss of function due to loss or damage of the fixture, supporting member, finishing cap, and cost loss due to repurchase have.

According to the present invention, when the height of the bookcase is required, the finishing cap is separated from the supporting member, and then the upper pipe is lifted to separate the fixing member from the fixing member insertion portion, And then the upper plate is fixed by pressing the upper plate (or stool) of the desk so that the fixture is seated on the step, and then the upper cap is lowered to finish the height adjustment work.

Meanwhile, the leg portion and the height adjusting device according to the above-described configuration can be equally applied to the seat 10 'as shown in FIG. 10, and can be applied to an article requiring height adjustment of other tables or the like.

It is to be understood that the detailed description of the present invention has been provided for specific embodiments, but it is to be understood that various changes and modifications may be made without departing from the scope of the present invention. Therefore, the scope of protection of the present invention should not be limited to the described embodiments, but should be determined by the equivalents as well as the claims that follow.

10: Desk 10 ': Chair
11: top plate 11 ': base
12,12 ': Support bridge
20: leg
210: lower pipe 211: first fitting groove
220: upper pipe 221: height adjusting ball
30: Height adjuster
310: Fixture 311: Fixing pin
312:
320: Support member
3210: Step
3220: Anti-shake part 3221: Reinforced flesh
3222: First stopping protrusion 3223:
3224: Bolt hole
3230: Fixture insertion portion 3231:
3232: engaging portion 3233: second engaging projection
330: Finishing cap 331: Insert groove
332: contact end 333: second fitting groove

Claims (6)

1. A height adjuster for a desk top and a top and bottom legs separated from each other by a lower pipe and an upper pipe,
The leg portion 20 includes a hollow bottom pipe 210 connected to a desk or a leg support leg and opened at an upper end thereof and a lower pipe 210 inserted into the lower pipe and slid up and down. A plurality of height adjusting holes 221 formed in a plurality of stages and an upper pipe 220 connected to a top plate or a stool of the desk,
The height adjusting device 30 is formed to have a shape corresponding to the upper pipe so as to be fitted into the upper pipe so as to enclose the outer circumferential surface of the upper pipe and has one side opened and a fixing pin inserted into the height adjusting hole And the lower part is divided into upper and lower parts with respect to a step 3210 formed with a predetermined width along the circumference of the inner circumferential surface so that the lower part covers the upper surface of the lower pipe. A support member 320 composed of a swing preventing part 3220 for preventing the swinging of the swing preventing part 3220 and an upper portion of the swing preventing part 3230 which is wider than the swing preventing part and into which the fixing hole is inserted; And is formed to have a shape corresponding to the support member, wherein the inside is hollow and the bottom surface is open The sliding coupling is to be lowered from the top pipe wrapped around the outer peripheral surface fastener insertion portion to block the clearance between the upper pipe and the lower pipe, and consists of a closed cap 330 to protect the support member and the fixture,
When the fixing pin is inserted into the height adjusting hole of a desired height among the plurality of height adjusting holes and the fixing pipe is coupled to the upper pipe and then the upper pipe is lowered, the fixing pipe is hooked on the step and the upper pipe is fixed, However,
A first fitting groove (211) is formed at one side of the upper portion of the lower pipe, and a first locking protrusion (3222) is formed at an inner circumferential surface of the anti-shake portion to fit into the first fitting groove, The outer peripheral surface is formed to be inclined at a predetermined angle so as to be slidably engaged along the outer peripheral surface of the lower pipe,
The inner circumferential surface of the fixture insertion portion protrudes from the upper pipe and the fixture to reinforce the fixture and the upper pipe to prevent the fixture and the upper pipe from shaking,
A second fitting groove 333 is formed at one side of the finishing cap and a second fitting protrusion 3233 formed at one side of the fixing hole inserting portion is inserted into the second fitting groove and the outer circumferential surface is inclined at a predetermined angle A coupling portion 3232 is formed,
When the finishing cap is slidably engaged, the inclined surfaces of the second engaging protrusions deflect the engaging portions backward by a predetermined angle while guiding the finishing cap, and then the second engaging protrusions are engaged with the second fitting recesses And the binding force is ensured while being elastically coupled to the groove.
[3] The apparatus of claim 1, wherein the lower pipe (210) and the upper pipe (220) are formed in a rectangular shape with both ends rounded,
The fixture 310 is made of a synthetic resin material having elasticity and has a rectangular shape with both ends rounded so as to surround the outer circumferential surface of the upper pipe, 312,
The opening of the opening 312 is formed to be gradually narrower from the inside to the outside end, and is fixed to the upper pipe while expanding outwardly when it is in press fit. After the fastening, the opening is restored to its original state by the elastic force, So as to be securely fixed and prevented from being disengaged arbitrarily.
The method according to claim 1,
A fixing hole is formed on one side of the upper portion of the lower pipe,
A bolt hole 3224 is formed in the center of the reinforcing member at a position communicating with the fixing hole to support the lower pipe and the lower pipe, Wherein the member is configured to be fixed via bolt connection.
delete delete A chair and a chair which are easy to adjust the height of the chair, characterized in that the height and the height of the chair and the chair are adjusted according to any one of claims 1 to 3.

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