KR100666507B1 - Appratus for adjusting height - Google Patents

Abstract

A height adjusting device is provided to quickly fix and release an upper post by using a fixing lever moving a fixing shaft and to hold up the desk in a stable posture by keeping the fixing shaft separated from the upper post by the fixing lever. The height adjusting device is composed of upper and lower posts(10) separated from each other, wherein one of the posts is inserted into the other and vertically slid and an adjusting unit(200) selectively fixing the upper post if the upper post reaches the predetermined height level. The adjusting unit comprises a housing(30) fixed to the post positioned at the outside of the upper and lower posts fitted to each other and provided with an insertion groove(32a) and a through-hole(32b) formed on the surface facing the inside of the post; a rolling member(40) having a first elastic unit(42) fitted into the insertion groove of the housing and a ball(44) disposed in the end of the first elastic unit; and a fixing member(50) comprising a second elastic unit(52) inserted into the through-hole of the housing, a fixing shaft(54) having a connecting piece(54a) inserted into the through-hole together with the second elastic unit with passing one end through the second elastic unit to the housing, and a fixing lever(56) connected to the connecting piece of the fixing shaft by a hinge shaft(H).

Description

Height adjuster {APPRATUS FOR ADJUSTING HEIGHT}

1 is a cross-sectional view showing a conventional height adjusting device

2 to 9 are views of the present invention,

2 is a full exploded perspective view

Figure 3 is an enlarged exploded perspective view partially showing the coupling structure between the support and the adjustment means in detail.

Figure 4 is a perspective view of the incision showing the state of holding and adjusting means coupled

5 is a cross-sectional view showing a state before height adjustment

6 to 8 is a cross-sectional view showing the height adjustment process

<Description of the symbols for the main parts of the drawings>

  10: lower holding 20: upper holding

  30: housing 35: buried groove

  40: rolling member 42: ball

  44: first elastic means

  50: fixing member 52: second elastic means

  54: fixed shaft 54b: first hinge hole

  56: fixed lever 56a: incision

  56c: supporting part H: hinge shaft

Generally, desks and stools used in schools and academies are produced with a slight height difference, but most of them are not varied in height, and are distributed only in the average height of each grade. Students have no choice but to use desks and benches that do not fit their body shape.

This makes it difficult to maintain the correct posture, resulting in abnormal development of students' body shapes.

Of course, desks and benches equipped with pneumatic or hydraulic height adjustment devices are widely used for home use, but because of the high price of the product, it is practically impossible to supply a large amount to schools.

In order to solve this problem, a variety of height adjustment devices have been proposed to simplify the structure to reduce the unit cost of the entire product and to easily adjust the height of the bookcase.

 One example of the conventional height adjustment device proposed in this way is Korea Utility Model Publication No. 1983-529, `` Elevation control device of desk and stool ''.

The prior art allows the upper column 3 to be moved up and down smoothly by the ball 2 connected to the spring 1 as shown in (a) of FIG. Through the height adjustment is made in a manner to fix the position of the upper column (3).

This prior art has the effect that the upper column (3) is in contact with the ball (2) to move smoothly, and fixed by the fixing bolt (4) does not easily release the upper column (3) even if an external shock is applied However, there are the following problems.

First, as shown in the figure, the ball 2 and the fixing bolt 4 are installed separately, so the structure is coarse.

In addition, there is a problem in that it is cumbersome and takes a long time because the fixing bolt 4 is to be inserted or removed from the upper and lower pillars 3 and 4 by turning one by one.

In addition, since the height must be supported by the desk with only one hand to insert the fixing bolt (4) after adjusting the height there is a risk that the user can not hold the weight on the bookshelf while inserting the fixing bolt (4) may cause a safety accident.

In addition, because the fixed bolt (4) in the position of the back of the fixed bolt (4) in the seated or sitting position, the unstable posture is forced to support the desk more difficult.

And when the thread of the fixing bolt (4) is worn out, the fixing bolt (4) is easily pulled out of the strut, the phenomenon that the stool, including the upper column (3) is sitting down, there is a high risk of loss.

In addition, because the fixing bolt (4) protrudes to the outside there is also a problem that the leg or pants are caught or wound or the pants are torn.

Another prior art is Korea Patent Publication No. 2006-0007620, `` Adjusting the height of a book and a stool '',

The height adjustment of the prior art bookshelf as shown in (b) of [Fig. 1], first, pressing one end of the pressing piece (6) as the pressing piece (6) is operated in the seesaw shape, the locking pin (7) Separated from the upper and lower column (3) (5), the upper column (3) is moved up and down to adjust the height, then release the pressing piece (6) by pressing the pressing piece (6) by the elastic force of the spring (8) ) Is returned to its original position so that the locking pin 7 is inserted into the through hole 9 of each support 3 and 4 to fix the position of the upper support 3.

Conventional height adjusting device of this type has the advantage that the pressing plate 6 is operated in the seesaw form, the height can be adjusted by one touch, but there are the following problems.

First, since the conventional state simply presses the pressing plate 6 protruding to the outside, the fixing state of the upper support 3 is released, and thus, when the pressing plate 6 is undesirably pressed by an external impact, the upper plate of the desk or the chair The seat may fall down suddenly and the user may be injured.

Moreover, since the pressing piece 6 of the prior art is not provided with a separate locking means, such a phenomenon can not be easily generated. And the prior art has a high risk of loss because the spring 8 is installed in a form exposed to the outside.

In addition, in order to allow the locking pin 7 to be inserted into the post in the height adjustment process, each through hole 9 of the upper support 3 and the lower support 5 should be positioned on the same line. Since the location of the naked eye must be confirmed.

In addition, since the pressing piece 6 is always protruded by the spring 8, like the conventional art described above, the pressing piece 6 is easily caught and injured or the clothes are easily damaged.

In addition, since the user must keep pressing the pressing plate 6 in the height adjustment process, the user has no choice but to work in the form of lifting a desk or a stool while sitting on the pressing plate 6, and thus it is difficult to support the weight of the desk or stool. Has a problem

The present invention is to solve the problems of the prior art as described above,

By improving the structure of the fixing member for fixing the position of the upper holding, it is an object to provide a height adjustment device that can be easily and quickly fixed and released of the upper holding position.

It is also an object of the present invention to provide a height adjusting device capable of preventing the loss of the fixing member.

And it is an object of the present invention to provide a height adjustment device that can prevent the occurrence of a safety accident by the malfunction of the fixing member.

In addition, by proposing a component that can be installed at the same time the member and the fixing member for fixing the position of the upper support for smooth movement of the upper support, to provide a height adjustment device that is easy to install the cloud member and the fixing member do.

At the same time, an object of the present invention is to provide a height adjusting device capable of minimizing the protrusion of the fixing member.

In addition, by allowing the operation of the fixing member to be made quickly, it is an object of the present invention to provide a height adjusting device that can support the desk even with one hand during the operation of the fixing member to perform the height adjustment work alone.

In addition, an object of the present invention is to provide a height adjusting device capable of performing work in a stable posture.

The height adjustment device of the present invention proposed in order to achieve the above object is to split up and down the holding portion to act as a pedestal, and to allow the upper column to move up and down along the lower column, and to move and position the upper column through the rolling member and the fixing member. The basic configuration is to make this possible.

In this basic configuration, the cloud member and the fixing member may be accommodated and installed at the same time through a separate housing, and the housing is inserted into the support so that the fixing member is manufactured in the form of a lever but does not protrude to the outside. .

Hereinafter, an embodiment of a specific configuration and operation of the present invention will be described with reference to the configuration illustrated in the drawings.

For reference, in the detailed description of the present invention will be described as limited to the height adjustment device of the present invention applied to a desk, but is not limited to this, it is also applicable to home and office equipment, such as a chair or a table.

The height adjusting device of the present invention is composed of a holding part 100 serving as a leg of a desk and an adjusting means 200 for adjusting the position of the holding part 100.

The support portion 100 is configured in the form of divided into a lower support 10, which is supported on the ground and the upper support 20 is inserted into the lower support 10, as shown in FIG.

The lower column 10 is in the form of a hollow tube, as shown in the figure, the lower end is connected to a separate pedestal 90, the inner middle point of the housing 30 of the adjustment means 200 to be described later The insertion hole 12 and the fixing hole 14 for installation are formed.

And the upper end of the lower column 10 is open so that the upper column 20 is inserted.

The upper support 20 has a hollow shape similar to the lower support 10, the upper end is connected to the upper plate 300 of the desk, the lower support 10 in the process of moving the upper support 20 up and down inside. A sliding ball 22 is formed in the longitudinal direction to prevent the hooking in the housing 30 installed in the housing.

At this time, the insertion hole 12 of the sliding hole 22 and the lower column 10, when the upper and lower column 20, 10 is coupled, is positioned so that they can communicate with each other, the housing 30 of the adjustment means 200 The sliding hole 22 and the insertion hole 12 to be installed through the form at the same time.

And the inner surface of the upper support 20, the protruding plate 24 is protruded in the longitudinal direction, the engaging groove 26 on the surface facing the sliding hole 22 of the protruding plate 24 is a predetermined interval It is formed a large number (see Fig. 4).

The adjusting means 200 is to assist the movement and position fixing of the upper column 20, as shown in (a) of [Fig. 3], the rolling member 40 to help the vertical movement of the upper column 20 ) And a fixing member 50 for fixing the moved upper support 20 and a housing 30 for accommodating the rolling member 40 and the fixing member 50 together.

The housing 30 is composed of an inserting portion 32 inserted and installed in the lower column 10, and a fixing portion 34 for fixing the inserting portion 32 to the lower column 10.

The fixing portion 34 is in the form of a plate, the upper and lower coupling holes 34a for coupling with the lower support 10 is formed, the outer surface is formed with a buried groove 35 of a predetermined depth have.

In addition, the insertion part 32 protrudes from the rear of the surface on which the embedding groove 35 is formed.

As shown in (b) of FIG. 3, the insertion portion 32 has an installation groove 32a of a predetermined depth formed at a lower side of the one end portion, and penetrates to the bottom surface of the embedding groove 35 at an upper side thereof. The through hole 32b is formed.

At this time, the distance between the installation groove 32a and the through hole 32b is equal to the distance between each engaging groove 26 formed in the upper column.

The installation member 32a and the through hole 32b are respectively provided with a rolling member 40 and a fixing member 50,

The rolling member 40 is to help smooth movement of the upper column 20, the first elastic means 42 is inserted into the installation groove (32a) of the housing 30, and the first It consists of a ball 44 connected to one end of the elastic means (42).

At this time, the ball 44 is not completely inserted into the installation groove 32a, but is partially positioned to protrude out of the installation groove 32a, and when the housing 30 is coupled to the lower column 10, the ball 44 A part of) is to be inserted into the locking groove 26 of the upper column 20.

In addition, the fixing member 50 is for fixing the position of the adjusted upper column 20, the second elastic means 52 is inserted into the through hole 32b of the housing 30, and the second It is composed of a fixed shaft 54 connected to the elastic means 52 and moved back and forth and a fixed lever 56 for operating the fixed shaft 54.

Among them, the fixed shaft 54 has a rod shape, and one side end is integrally provided with a connecting table 55 having a width smaller than the diameter of the fixed shaft. As a result of the difference in dimensions between the fixed shaft 54 and the connecting table 54a, a locking step 54a is formed at the connecting portion.

In addition, a first hinge hole 55a is formed at one end of the connection table 54a for connection with the fixing lever 56 to be described later.

The fixing lever 56 has an incision 56a for inserting a portion in which the first hinge hole 54b of the fixing shaft 54 is formed at an upper end thereof, and the connecting table 55 at both sides of the incision 56a. The first hinge hole (54b) and the second hinge hole (56b) connected to the hinge axis (H) is formed.

At this time, as shown in the enlarged view of Figure 5, when the fixed lever 56 and the connecting rod 55 is lying inside the buried groove 35 in the state connected through the hinge shaft (H), The height 56c of the cutout is longer than the width 55b.

Accordingly, the base 56d protrudes over the width 55b of the connecting table.

 Further, an inclined portion 56e is formed at the lower end of the fixed lever 56 so as to easily flip the fixed lever 56.

Hereinafter, the coupling process between the above-described components will be described.

First, insert the upper column 20 into the lower column 10 as shown in [Figure 2] to position the lower end of the upper column 20 to reach the bottom of the lower column 10, the housing 30 as shown in Figure 3 Install the rolling member 40 and the fixing member 50 to the insertion portion 32 of the, respectively,

First, the rolling member 40 is installed in the form of inserting the first elastic means 44 into the installation groove 32a of the insertion part 32 and then positioning the ball 42 at the end of the first elastic means 44. do.

At this time, some or all of the balls 42 are projected to the outside of the installation groove (32a).

Then, the second elastic means 52 is inserted into the through hole 32b of the insertion portion 32 so that one end thereof is brought into contact with the step portion 33 in the through hole 32b, and then the fixed shaft 54 is positioned. Inserting the connecting rod 55 into the through hole 32b, the fixing member 55 in such a way that the connecting rod 55 passes through the second elastic means 52 and penetrates the bottom of the buried groove 35 of the fixing part 34. 50) install.

At this time, the other end of the second elastic means 52 is in contact with the locking jaw (54a) formed on the connecting portion between the fixed shaft 54 and the connecting table 55, the second elastic means 52 is the locking jaw (54a) And the stepped portion 33 of the through hole 32b. (See FIG. 5).

In addition, the fixed shaft 54 inserted into the through hole 32b also has its one end portion coming out of the through hole 32b similarly to the ball 42.

Thereafter, the fixing lever 56 is positioned in the form of lying on the bottom of the embedding groove 35, and one end of the connecting table 55 penetrating the embedding groove is inserted into the cutout 56a of the fixing lever 56. The locking lever 56 and the fixed shaft 54 are mutually interposed by inserting the hinge shaft H into the second hinge hole 56b of the connecting table 55 and the first hinge hole 54b of the fixed shaft 54. Combine.

At this time, the length of the portion penetrating the bottom of the buried groove 35 of the connecting table 55 does not exceed the depth of the buried groove 35 so that the fixing lever 56 does not protrude to the outside.

 In addition, the fixing lever 56 is in close contact with the bottom of the buried groove 35 so that the supporting portion 56d formed in the cutout 56a may contact the bottom of the buried groove 35 in the process of lifting the fixed lever 56. Make sure

When the coupling of the rolling member 40 and the fixing member 50 to the housing 30 is completed, the insertion part 32 of the housing 30 is inserted into the insertion hole 12 of the lower column 10, and then the fixing bolt is fixed. Secure through (B).

At this time, since the distance between the installation groove 32a of the housing 30 and the through hole 32b is formed to be the same as the distance between the respective engaging grooves 26 of the upper column 20, it protrudes from the installation groove 32a. One end of the ball 42 and the fixed shaft 54 is positioned in the shape of exactly inserted into the engaging groove 26 of the upper column 20.

Through this assembly process, the coupling of the present invention is completed in the form of [FIG. 4] and [FIG. 5], and in this state, the fixed shaft 54 is hung on the locking groove 26 of the upper column 20. 20 cannot be moved upward.

The following will describe the operation of the present invention and the effects thereof thus combined.

If you want to increase the height of the first desk, the user first puts his hand in the inclined portion (56d) of the fixed lever 56 and then flips in the direction of the arrow as shown in [Fig. 6], the fixed lever 56 is the hinge shaft (H) It is rotated to the center.

In this process, as shown in the enlarged view, one edge of the supporting portion 56c formed at the upper end contacts the bottom of the embedding groove 35, so that the fixing lever 56 serves as a lever to fix the joint 55 including the connecting rod 55. A force is applied to pull the shaft 54 outward.

By the lever action of the fixing lever 56 there is an advantage that can be easily drawn with only a small force compared to the form of pulling the fixed shaft 54 directly in a straight direction.

As the fixed shaft 54 and the connecting table 55 is moved toward the fixed lever 56 b), the fixed shaft 54 is ended when the fixed lever 56 is completely erected as shown in FIG. 7. It is completely separated from the upper column 20.

In this state, since the top end of the fixing lever 56 is completely in contact with the bottom surface of the buried groove 35, the fixed shaft 54 pulled back to its original position by the elastic force of the second elastic means 52. It is possible to prevent the movement and at the same time maintain the state without the user holding the fixed lever (56).

Therefore, the user can lift the desk top plate 300 including the upper column 20 with both hands in a standing state, and thus the posture is unstable as the height is adjusted while pressing the pressing plate. Solved.

By the operation of the fixing member 50, the upper support 20 can be moved upwards without any interference, although a part of the ball 42 is fitted into the locking groove 26, Since the ball 42 is supported by the first elastic means 44 in the installation groove 32a, the ball 42 moves into the installation groove 32a when the upper support 20 is moved upward. Do not hinder the movement of the upper column 20.

Rather, as shown in FIG. 8, the ball 42 is rotated in contact with the protruding plate 24 of the upper support 20 in the process of moving the upper support 20 so that the ball 42 serves as a bearing. The upper column 20 can be moved smoothly.

In addition, when the other engaging groove 26 at the bottom in the process of lifting the upper support 20 is located on the same line as the ball 42, the ball is caught by the elastic force of the first elastic means 44 ( 26) You will enter.

Therefore, when lifting the upper support 20, the ball 42 and the engaging grooves 26 are sequentially coupled, the user through the sound and vibration generated in this process, the user fixed shaft 54 and the engaging groove 26 It can be seen that this is located on the same line, because this is because the distance between the ball 42 and the fixed shaft 54 is made equal to the distance between each engaging groove 26 as described above.

In this state in which the fixed lever 56 is erected as shown in FIG. 8, a part of the fixed lever protrudes from the housing, so that the fixed lever 56 may be undesirably flipped by external contact. Because it is in the holding state, the phenomenon that the desk falls down does not occur.

Rather, it is necessary to support the desk in an unstable posture while pressing the pressing plate, thereby solving the problems of the prior art, which has a risk of the desk sitting down.

If you want to fix the position of the upper holding 20 after adjusting the height of the upper plate of the desk by moving the upper holding 20 in this manner, the fixing lever 56 is buried when the fixing lever 56 is turned upside down. Since the state of supporting the bottom of the groove 35 is released, the fixed shaft 54 is inserted into the locking groove 26 of the upper column 20 to block the movement of the upper column 20.

At this time, since the second elastic means 52 in the installation groove 32a is in a compressed state in a state where the fixed lever 56 is erected, the second elastic means (even if only the user touches the fixed lever 56 slightly by hand and flips it off) The fixing lever 56 is easily bent by the elastic force of 52, and the fixing shaft 54 is fitted into the locking groove 26 of the upper support 20 by itself.

Therefore, even if you use one hand to operate the fixed lever 56 while holding the desk with both hands, the fixed lever 56 is operated so quickly as described above, so you can immediately hold the desk with both hands again. There is no problem in supporting the desk with one hand during operation.

As a result, the upper brace can be fixed quickly and easily, compared to the conventional method in which the bolts need to be turned in order to fix the upper brace, and the desk must be supported only for one long time by inserting or removing the fixing bolt. Will solve the problem.

In addition, in the state in which the fixed shaft 54 is coupled to the upper support 20, the fixed lever 56 is located in the form of embedded lying on the bottom of the buried groove 35, not only unnecessary contact with the outside is blocked, but simply Since it is operated in a way of pulling the fixed shaft 54, not the pressing method, there is an advantage that can completely prevent the phenomenon of the upper column is settled in a fixed state.

After that, even if you want to lower the height of the desk, the height is adjusted through the same process as the previous process.

In the above description, the height adjusting device is applied to a desk, but the present invention is not limited thereto, and it can be applied to both home and office furniture such as chairs and tables.

As described above, the present invention allows the fixing member to be easily and stably operated through the fixing lever and is installed in a form in which the fixing lever is embedded in the housing. The biggest feature of the present invention is to simultaneously solve both the hassle of fixing and releasing the prop, the safety accident risk due to unstable working posture, the risk of loss of the fixing member, and the safety accident caused by the protruding fixing member. .

In addition, although not described in detail above, by installing the support member while holding the cloud member 40 and the fixing member 50 through the housing 30 at the same time, each component is installed in the cloud compared to the prior art that is individually installed Another feature of the present invention is that the member and the fixing member can be easily installed as well as to prevent the loss of each member.

As described above, the height adjusting device according to the present invention,

There is an advantage that the fixing and releasing of the upper column can be easily and quickly made by the fixing lever for moving the fixed shaft through the rotation.

In addition, the user can hold the desk in a stable posture by allowing the fixed shaft to be kept separated from the upper circumference by the fixing lever even if the user does not hold it.

And since the fixed lever is placed in the buried groove and lying on the floor, it blocks unnecessary contact with the outside, causing the desk to swell or torn by the protruding fixing member due to the malfunction of the fixed lever. There is an advantage that can prevent the phenomenon.

In addition, the fixed lever pulls the fixed shaft in the form of a lever, there is an advantage that can easily move the fixed shaft with less force.

And by allowing the operation of the fixing member to be made quickly, it is an object of the present invention to provide a height adjusting device that can support the desk even with one hand during the operation of the fixing member to perform the height adjustment work alone.

In addition, by installing in the holding post while accommodating the cloud member and the fixing member at the same time through a separate housing, the installation is easy and there is an effect that can prevent the loss of each member.

Claims (5)

It is separated into an upper support and a lower support, one of which is inserted into the other side is installed to slide up and down, and the height adjustment configured to include a control means for selectively fixing when the upper support reaches a predetermined height In the apparatus, The adjusting means, A housing having an insertion groove and a through hole formed in an upper side of the upper end and the lower end inserted into each other and fixed to the support located on the outer side and facing toward the inside of the support; A rolling member comprising a first elastic means inserted into an insertion groove of the housing and a ball located at an end of the first elastic means; A fixed shaft and a fixed shaft having a second elastic means inserted into the through hole of the housing and a connecting rod which is inserted into the through hole together with the second elastic means so that one end thereof passes through the second elastic means and passes through the housing. Height adjusting device, characterized in that made of a fixing member consisting of a fixed lever connected to the connecting rod and the hinge shaft. The method of claim 1, The housing is composed of an insertion portion to be inserted into the support and the fixing portion for fixing the insertion portion to the support, the insertion groove and the through hole is height adjustment device, characterized in that formed in the insertion portion. The method of claim 1, A height adjusting device, characterized in that the outer surface of the housing is formed with a predetermined depth of the groove and the fixing lever is located in the buried groove. The method according to any one of claims 1 to 3, The fixed lever is positioned in close contact with the housing, the height adjustment device characterized in that the supporting portion is formed to extend further from the portion connected to the fixed shaft. The method according to any one of claims 1 to 3, Among the upper support and the lower support, a housing in which the housing is not installed is formed with a plurality of locking grooves in which the ball of the rolling member and the driving shaft of the fixing member are inserted in the longitudinal direction of the support, and each locking groove is formed between the ball and the fixed shaft. By forming at a position corresponding to the length, the height adjustment device characterized in that the ball and the fixed shaft is configured to be inserted into the locking groove at the same time.

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