KR20040004345A - The high and low regulating equipment of desks and chairs - Google Patents

Abstract

PURPOSE: An apparatus for controlling height of a desk and chair is provided by introducing an upper column into a lower column and conveniently adjust and fixing the apparatus by up and down movement and rotation of the apparatus without troubles of decomposing then reassembling the upper and the lower columns and the apparatus. CONSTITUTION: The apparatus comprises an upper column(11) having a cylindrical hole(13') and a lower column(12) having a large rectangular frame and a number of cylindrical holes at both sides of a longer guide groove(14). The apparatus further has a height control main body(15) including a central hole having a threshold inside a central portion, a fixture pin inserted with an elastic spring, projected fixture bars on both sides at center of the central hole and engaged with the cylindrical holes(13,13') of the columns(11,12).

Description

Height adjusting device for bookshelves {The high and low regulating equipment of desks and chairs}

The present invention relates to a height adjustment device for a bookcase, in particular, to be easily adjusted and fixed by up, down movement and rotation in a state where the main body of the height adjustment device is mounted while the upper support is inserted into the lower support. By doing so, the dismantlement of the upper and lower struts and the height adjusting device is eliminated to eliminate the hassle of reassembling again in the adjusted position and to make the height adjustment work very easy, simple and quick.

In general, bookshelves have been developed to have a variety of forms and multi-function in order to meet the various needs of the user, but in the case of the bookshelves used by students in the elementary, middle, and high schools, the height is determined at the time of manufacture and supplied to the standard size Because of the rapid growth rate, the students' body shape cannot be supported rapidly, and the student's body shape is fitted to a large or small desk. There is a problem that adversely affects the human body, such as a slowing growth rate.

In other words, a student who has a large body compared to a desk is hard to sit for a long time because his legs are not included in the small desk, and when the book is placed on the desk, the distance between the book and the eyes is far away, so that the waist is bowed. On the contrary, in the case of a student whose desk is larger than the physique, the desk is placed close to the chest higher than the waist when sitting, which is very inconvenient when writing or writing, and when you sit deep with your hips behind the chair, your feet will not reach the floor. The problem is that the posture is distorted, and long life in such a crooked position causes the spine of the students to be distorted or unbalanced, which can cause serious damage to the development of the students.

In order to improve the above problems, it is provided with a height adjustment device developed separately in the leg portion of the bookshelf, the leg portion of the bookshelf is divided into upper and lower column of different diameter, so that the upper column is inserted into the lower column, and the appropriate position Looking at the example by installing the height adjustment device in the, the height adjustment device is composed of the upper adjustment sphere and the lower adjustment sphere, by inserting a plurality of rubber rings and a tightening bush on the upper end of the rubber ring It is configured to properly adjust the height of the holding on the bookshelf by the action of tightening or releasing the upper fixing cap of the housing.

However, the height adjustment device as described above is a factor of the increase in the production cost by installing the upper and lower adjustment devices, respectively, the rubber ring is inserted into the inner periphery of these adjustment devices, respectively, is difficult to assemble the process, There are disadvantages such as the difficulty of inserting the props into the inner circumference of the adjusting mechanism and the inability to keep the height of the desk plate horizontal.

As another example of the prior art, a housing that is tightly inserted into and fixed to the top of the support, a rubber ring inserted into the top of the housing, and inserted into the top opening of the housing to press the rubber ring to hold the rubber ring There is a technique consisting of a fastening bush to be in close contact with the outer periphery of the housing and a fixed cap that is screwed to the upper outer periphery of the housing to press the tightening bush to closely adhere to the outer periphery of the support, but also to adjust the height In order to have the same disadvantage that it was not possible to adjust both the height adjustment at the same time and evenly.

In addition, if the height adjustment mechanism is not properly adjusted as inclined in one direction, it is very inconvenient to use, and the height adjustment mechanism is not very stable, and if more force is applied, a position shift occurs or the assembly state is displaced. Or the combination may be separated and students may be injured.

In addition, there is a problem that the upper circumference flows to each other due to a very small gap between the upper and lower struts in the state that the upper brace is inserted into the lower circumference, to compensate for this, but specific means are not taken. It is a limitation that the height adjusting device is strongly compressed to the upper holding and the lower holding and is forcibly fixed. On the other hand, an additional fixing pin or a fixture is additionally used to prevent flow, but in this case, the fixing pin or the fixture Has not been very effective as it is easily separated and lost, and the upper strut is deeply inserted into the lower strut, so that the distance between the portion where the height adjustment device is mounted and the end of the upper strut inserted inside the lower strut becomes farther away. There is a problem that the landlord's liquidity and flow width are too big to catch.

The present invention is to improve the problems of the prior art as described above, the upper support is easily moved and rotated by up and down movement and rotation in the state in which the main body of the height adjusting device is inserted in the lower support to be movable By being fixed, the upper and lower struts and the height adjustment device to remove the hassle of reassembling again in the adjusted position after dismantling, and to make the height adjustment work very easy, simple and quick.

1 is an overall perspective view of a desk to which the height adjustment device of the present invention is applied

Figure 2 is an overall perspective view of a stool to which the height adjusting device of the present invention is applied

3 is an enlarged perspective view of main parts of the present invention;

4 is an exploded perspective view of main parts of the present invention;

Figure 5 is a side cross-sectional view of the present invention.

Figure 6 is a front view showing the mounting process of the present invention

[Description of Symbols for Main Parts of Drawing]

11: Upper Shore 12: Lower Shore 13,13 ', 13 ": Cylinder Hole

14: guide groove 15: main body 16: handle

17: insertion groove portion 18: center hole 19: locking jaw

20,20 ': protrusion fixing rod 21: fixing pin 22: elastic spring

23: fixing bolt 24: cap 24 ': insertion piece

The present invention relates to a height adjustment device for a bookcase, in particular, to be easily adjusted and fixed by up, down movement and rotation in a state where the main body of the height adjustment device is mounted while the upper support is inserted into the lower support. By doing so, the dismantlement of the upper and lower struts and the height adjusting device is eliminated to eliminate the hassle of reassembling again in the adjusted position and to make the height adjustment work very easy, simple and quick.

The present invention provides a support for supporting a bookcase, the upper support is inserted into the lower support to move to form a guide long groove to the center of the front, rear long and a plurality of cylindrical holes are formed on both sides of the front guide long groove, The adjusting device is mounted, but the fixing pin inserted through the center of the main body is inserted into and fixed by the fixing bolt on the rear side, and protruding fixing rods are provided on both sides to the rear of the main body to be fitted at the proper position. The main body is inserted through the upper and lower struts while the upper struts are inserted into the lower struts. The main body is rotated 90 degrees in one direction after being slightly spaced from the struts without being separated from the struts. It is configured to be rotated 90 degrees again at an appropriate position.

As a reference diagram for explaining the present invention, Figure 1 is an overall perspective view of a desk to which the height adjustment device of the present invention is applied, Figure 2 is an overall perspective view of a stool to which the height adjustment device of the present invention is applied, Figure 3 is a main part of the present invention. 4 is an exploded perspective view illustrating main parts of the present invention, FIG. 5 is a side cross-sectional view of the present invention, and FIG. 6 is a front view showing the mounting process of the present invention.

First, looking at the configuration of the lower strut 12 to which the present invention is applied, it has a rectangular cross section and is provided with a guide-long groove 14 extending longitudinally in the center of the front and rear in a frame shape having an empty space inside. On both sides of the front guide groove 14, a plurality of cylindrical holes 13 'are arranged in a row.

The upper support 11 is inserted into the inner space of the lower support 12 so as to be movable up and down, and a cylindrical hole (up, down, left, right and center is disposed at the center of the front lower end of the upper support 11). 13 is formed in a rhombic shape, wherein the upper and lower cylindrical holes 13 correspond to the position provided with the central guide long groove 14 of the lower support 12 and the left and right cylindrical holes 13 ) Is formed to correspond to the cylindrical hole 13 formed on both sides of the lower support 12, the cylindrical hole of a small diameter in the position corresponding to the central cylindrical hole 13 of the front also in the rear of the upper support (11) (13 ") is formed.

And, in the height adjuster main body 15 according to the present invention, the front surface of the body having a short cylindrical shape laid down is provided with a handle piece 16 protruding in the form of a ring, the center of which is cut partially recessed The insertion groove 17 is formed, and a central through hole 18 is formed therein, and a rear end thereof has a locking jaw 19 protruding from the inner diameter part, and a rear side of the central through hole 18 is formed. On both sides, long protruding fixing rods 20 and short protruding fixing rods 20 'are provided.

The central through hole 18 of the main body 15 is provided with a long fixing pin 21 for fixing the main body 15 on the upper and lower struts 11 and 12, but is elastic on the upper outer periphery thereof. The spring 22 is inserted into the locking jaw 19 so as to be engaged, and the rear end of the fixing pin 21 is fixedly mounted by the fixing bolt 23, and the front insertion groove 17 of the main body 15 is fixed. ) Is provided with a cap 24 is covered with a portion of the bent insertion piece 24 ′ of the outer peripheral end is inserted.

The height adjustment device of the present invention as described above is inserted in the lower support 12, the lower end of the upper support (11), the height adjustment main body 15 is mounted on the overlapping portion of the upper, lower support (11) (12). This is because the fixing pin 21 which penetrates the elastic spring 22 into the central through-hole 18 of the main body 15 and passes through the guide pin groove 14 of the lower support 12 and the front center cylinder of the upper support 11 is provided. Inserted through the ball 13, the fixing bolt 23 is inserted in the rear cylindrical hole (13 ") of the upper support 11 is mounted by being fixed to the fixing pin 21, the main body 15, the rear Long protruding fixing rod 20 of the lower support 12 is inserted into the cylindrical hole 13 'on both sides of the central guide long groove 14 of the lower support 12 to the left and right cylindrical hole 13 of the upper support 11, respectively. It is inserted and fixed.

When the height adjustment device of the present invention is required to adjust the height, when pulled forward by holding the handle piece 16 of the adjustment body (15), the central fixing pin 21 is inserted due to being fixed The elastic spring 22 is caught by the locking jaw 19 of the main body 15 and compressed. As the main body 15 is pulled forward, the long protruding fixing rod 20 at the rear is upper and lower posts 11 and 12. ), And then the main body 15 is rotated 90 degrees in one direction so that the protruding fixing rod 20 is guide grooves 14 and the inner side of the lower support 12. It is located in the upper and lower cylindrical holes 13 of the upper support 11, when the main body 15 is pulled by the upper and lower support 11, 12 by the restoring force of the compressed elastic spring 22 The long protruding fixing rod 20 passes through the guide long groove 14 of the lower support 12 and the upper and lower ends of the upper support 11. Inserted into the ball 13, in this state can be moved up and down along the guide cabinet groove 14 integrally with the upper support 11 inserted in the lower support 12, in this way to the appropriate position to be adjusted After moving, the main body 15 is pulled forward again, and the long protruding fixing rod 20 is separated from the upper and lower cylindrical holes 13 and the guide long groove 14, and rotated 90 degrees in one direction, and then the upper and lower struts ( 11) The height adjustment work is completed by inserting and fixing the long protruding fixing rod 20 into the cylindrical holes 13 and 13 'of the 12.

In addition, the upper and lower struts 11 together with the long protruding fixing rods 20 'are provided with short protruding fixing rods 20' above and below the central through holes 18 at the rear side of the height adjustment main body 15 in the above. (12) to serve as an aid in fixed mounting.

Therefore, the height adjustment device of the present invention as described above to dismantle the upper support (11) and the lower support (12), the height adjustment port main body 15 and the assembly screws for height adjustment work again after height adjustment. Without the hassle of reassembly, it is very convenient and easy to adjust the height, there is no fear of missing parts, it is useful to expect fast operation and stable use.

The present invention allows the upper and lower struts and the height adjusting device to be easily adjusted and fixed by up, down movement and rotation in a state where the main body of the height adjusting device is mounted in the state in which the upper strut is inserted into the lower strut. Eliminate the hassle of reassembling in the adjusted position after separation and disassembly, and has the effect of making the height adjustment work very easy, simple and quick.

In addition, the present invention is easy to customize and inexpensive, to prevent the loss of accessories due to frequent disassembly and reassembly, and increase the practicality and stability in the use of a bookcase equipped with a height adjustment device to improve the quality Has a contributing effect.

Claims (3)

Five cylindrical holes 13 are formed on the front, bottom, left, right, and center of the bottom of the frame having a rectangular cross section, and a cylindrical hole 13 "is formed at a position corresponding to the central cylindrical hole 13 at the rear thereof. The upper support 11 and the upper support 11 are formed on the larger rectangular frame to form a long guide length groove 14 toward the center of the front and rear, and the front guide length grooves 14 are formed on both sides. The lower support 12 is formed by arranging the cylindrical hole 13, The fixing pin 21 through which the elastic spring 22 is inserted into the front end is formed by forming a central through-hole 18 through which the locking jaw 19 is formed into the central part through the body. Is fixedly mounted at the rear end, the rear is formed with a projection fixing rod (20) on both left and right sides around the central through hole (18) to the front cylindrical hole of the upper and lower struts (11) (12) ( 13) (13 ') height adjustment device for a bookcase, characterized in that the height adjustment mechanism main body 15 is fixed to fit on. According to claim 1, wherein the height adjustment main body 15 is formed in the front of the body of the shape of the short cylindrical shape lying protruding ring-shaped handle piece 16, the ring-shaped cut insertion groove 17 into the inside Forming the insertion piece 24 'is fixed to the height adjustment device for a bookcase, characterized in that the cap 24 is provided with a cover. According to claim 1 or 2, the height adjustment device for the bookcase, characterized in that provided with a short protruding fixing rod (20 ') above and below the central through-hole 18 to the rear side of the height adjustment main body (15). .