KR20020002028A - Leg member capable of adjusting the height - Google Patents

Abstract

PURPOSE: A height adjustable leg is provided to easily adjust the height of furniture by measuring the height of a leg, to extend the adjustment limit, and to improve the external appearance. CONSTITUTION: A height adjustable leg(1) comprises a cylindrical leg body(10), a bar type support shaft(20) received in the leg body, a height adjusting device(30) inserted in the upper end portion of the leg body and of which height is adjusted by fastening the support shaft, and a fixing plate(40) having many threaded recesses(41) attached to the lower face of furniture and formed longitudinal to the support shaft. The leg is structurally firm, and the height of the leg is easily adjusted.

Description

Leg member capable of adjusting the height}

The present invention relates to a leg that can be height-adjusted by a user's manual operation, which can be installed on furniture such as a desk, a table, a chair, a bed, and the like. The present invention relates to a height-adjustable leg having a height adjustment device capable of being structurally robust and greatly improving an adjustment limit, for example, applied to children's furniture so that these furniture can be used semi-permanently.

Generally, home furniture or office furniture, such as desks, tables, chairs, beds, etc., require a heightened or low adjustment of the legs of the furniture according to a balanced arrangement and user needs. If not, for example, a separate support formed of paper or wood is placed on the lower end of the leg to balance the furniture or adjust to the desired height.

This method has a problem that the height adjustment work is very cumbersome and difficult depending on the type of the work space and the supporting base, and various means have been proposed that can be attached to the lower end of the leg to adjust the height to improve this, most known The height adjustment means of the furniture leg of the, has a structure that attaches the height adjustment port formed with a screw groove to the lower end of the leg, the screw shaft is screwed to it integrally.

However, the height adjustment means of the furniture legs as described above is mainly used to balance the furniture when arranging the furniture, there is a limit to the height adjustment, for example, for children's furniture to adjust the height according to the growth of the child. There was a problem that you can not buy a new furniture. In addition, since there is no inconvenience to adjust the height only by the user's eyes because there is no means for measuring the height adjustment amount, the height adjustment sphere formed integrally with the screw shaft is small in size and the user grips it. Not only it is very difficult to turn to one, there was a problem that the screw shaft is exposed to the outside in the state of adjusting the height to reduce the aesthetics of the overall appearance.

Accordingly, the present invention has been made to solve the above problems, while having a height adjustment device that the user can easily adjust the height with a wrench on the upper end, the height measurement that can easily measure the height when the user adjusts the height Since the scale is formed, it is not only structurally strong but also allows the user to easily adjust the height of the furniture while measuring the height of the legs, and the control limit is greatly improved and the overall appearance can be improved. The purpose is to provide a height adjustable leg.

1 is a perspective view showing a state before the legs are completely assembled according to the first embodiment of the present invention,

2 is a cross-sectional view of the main body of the height adjustment device shown in FIG.

Figure 3a is a cross-sectional plan view of the fastening state of the height adjustment device shown in Figure 1 released;

Figure 3b is a cross-sectional plan view in a state where the fastener of the height adjustment device is tightened,

4 is a cross-sectional plan view of the fastener assembly shown in FIGS. 3A and 3B;

5 is a perspective view of a cap that can be mounted on top of a leg in accordance with the present invention;

6 is a longitudinal sectional view in a state in which the cap shown in FIG. 5 is mounted on the upper portion of the leg according to the first embodiment of the present invention;

7 is a perspective view showing a state before the legs are completely assembled according to the second embodiment of the present invention;

8 is a cross-sectional view of the main body of the height adjustment device shown in FIG.

9 is a cross-sectional plan view of the height adjustment device shown in Figure 7 tightened fasteners,

FIG. 10 is a plan sectional view of the fastener assembly shown in FIG. 9; FIG.

FIG. 11 is a longitudinal sectional view in which the cap shown in FIG. 5 is mounted on the upper portion of the leg according to the second embodiment of the present invention. FIG.

1: leg 10: leg body

20: support shaft 30: height adjustment device

40: fixed plate 50: cap

60: lower cap

The present invention for achieving the above object is a cylindrical leg body, at least one support shaft that is accommodated in the leg body, the rod is inserted into the upper end of the leg body and penetrated therein A height adjustment device to adjust the height by tightening the at least one support shaft, and a plurality of screw grooves are formed to be attached to the lower surface of the furniture, such as a plate-shaped fixed plate at a right angle to the support shaft Is done.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings, in which like reference numerals designate like parts.

1 is a perspective view showing a state before a leg is completely assembled according to the first embodiment of the present invention, wherein the leg 1 is accommodated in the leg body 10 and the leg body 10 in a cylindrical shape. While being inserted into the rod-shaped support shaft 20, the upper end of the leg body 10, the height adjusting device 30 to adjust the height by tightening the support shaft 20 penetrated therein And a steel plate-like fixing plate 40 having a plurality of screw grooves 41 formed to be attached to the lower surface of the furniture and the like being fixed at right angles to the support shaft 20.

In more detail, the leg body 10 may be formed in a cylindrical shape such as a circle (see FIG. 1), an ellipse, a polygon including a rectangle, and the like, and may be made of steel, plastic, aluminum, or the like. Can be. In addition, the leg body 10 is formed on the upper side, a wrench insertion hole 11 formed corresponding to the fastener insertion hole 311 of the height adjustment device 30 to be described below, this leg body ( 10, the inner side of the projection (not shown) is inserted into the coupling groove 313 of the height adjustment device 30 to be described below so that the height adjustment device 30 is not rotated at the top of the leg body (10) Not formed). In addition, if at least two legs 1 according to the present invention are used in a desk or a table or the like, an attachment magnet 12 for installing a blind plate (not shown) between the legs 1 is provided. And a lower hook 13 may be further provided.

The support shaft 20 is biased to one side in the leg body 10 so as to slide up and down through the support shaft insertion hole 312 of the height adjusting device 30. The support shaft 20 is made of steel or metal plated with chromium having good surface strength, and a plurality of notches (not shown) are formed on the surface thereof, so that when the user adjusts the height, It measures the height and functions as a ruler to easily adjust the height of the furniture.

Figure 2 is a sectional view of the main body of the height adjustment device shown in Figure 1, Figure 3a is a cross-sectional plan view of the height adjustment device shown in Figure 1 is released, Figure 3b is a fastening state of the height adjustment device tightened. 4 is a top cross-sectional view of the fastener assembly shown in FIGS. 3A and 3B. The height adjusting device 30 generally has a body 31 formed in plastic, for example in the shape of a cylinder (see FIGS. 1 and 2) corresponding to the leg body 10, which body 31 The support shaft insertion hole 312 formed to be oriented to one side from the center of the circular cross section while penetrating up and down, and to communicate with the support shaft insertion hole 312 while horizontally penetrating laterally at an approximately middle height of the main body 31. It is formed slightly offset from the center, for example, a fastener insertion hole 311 of a polygonal shape, such as a hexagon, the locking acting as a limit point of the insertion depth when the height adjusting device 30 is fitted to the leg body 10 The jaw 314 and the coupling groove 313 formed along the length of the outer circumferential surface to accommodate the protrusion of the leg body 10 so as not to rotate at the upper end of the leg body 10.

In addition, in the fastener insertion hole 311 of the height adjustment device 30, as shown in Figures 3a and 3b, the shape of the fastener insertion hole 311 is provided with a hole 321 is formed therein Corresponding to, for example, the first fastener 32 having a hexagonal pillar shape, and the second fastener 33 having a hexagonal pillar shape like the first fastener 32 with a hole 331 penetrating therein; Wrench bolts 34, which are inserted into the first fasteners 32 and the second fasteners 33 at the same time to rotate the fasteners 32, 33 linearly by rotating them, and the first fasteners 32 And a coil spring 35 positioned between the second fastener 33 and surrounding the wrench bolt 34 to apply elastic force to the fasteners 32 and 33 so as to maintain an appropriate interval.

As shown in FIG. 4, the first clamp 32 and the second clamp 33 fitted to the wrench bolts 34 facing each other are inclined and symmetrically concave while being inclined toward one outer side from the opposite surface. Faces 322 and 332 are formed, respectively.

In addition, the wrench groove 341 in the head of the wrench bolt 34 may be formed in a square or hexagon, etc. corresponding to the shape of the known adjustment wrench, a magnet (not shown) is inserted therein. This is because the adjustable wrench (not shown) is usually made of steel, so it reacts easily with the magnet, and when the wrench comes close, the wrench is easily attached to the proper position by the magnetic force, The convenience of not missing out if you miss the wrench.

On the other hand, Figure 5 is a perspective view of a cap that can be selectively mounted on the top of the leg according to the invention, Figure 6 is a state in which the cap shown in Figure 5 is mounted on the top of the leg according to the first embodiment of the present invention As a longitudinal cross-sectional view of the cap 50, the cap 50 has a substantially truncated conical shape in which a hollow part 51 is formed while being made of plastic, and having at least one magnet 52 thereon, the fixed plate 40 made of steel. It can be attached and detached easily.

In addition, referring again to FIG. 1, a lower cap 60 is inserted into the lower portion of the leg 1 according to the present invention to protect the bottom.

Therefore, by using the cap 50 and the lower cap 60, it is possible to keep clean while protecting the leg 1 or the floor, as well as to improve the overall aesthetics of the leg (1).

Now, the assembly of the leg according to the present invention, first, while the second bolt 33 and the coil spring 35 is fitted to the wrench bolt 34, the wrench bolt 34 to the first clamp 32 After fitting into the threaded hole 321, these assemblies are inserted into the fastener insertion hole 311 formed in the main body 31 of the height adjusting device 30. At this time, as shown in FIGS. 3A and 3B, the pressing surfaces 322 and 332 of the fasteners 32 and 33 are aligned to face the support shaft 20 to be fitted later.

The height adjustment device 30 is assembled as described above is inserted into the upper end of the leg body 10, the fitting groove 313 of the height adjustment device 30 is fitted in accordance with the protrusion formed on the leg body (10) , The fastener insertion hole 311 of the height adjustment device 30 is aligned with the wrench insertion hole 11 of the leg body (10). In addition, after the assembly of the wrench bolt 34 and the fasteners (32, 33) can be positioned in a portion where the support shaft insertion hole 312 and the fastener insertion hole 311 is in communication, the support shaft 20 ) Is inserted into the support shaft insertion hole 312 of the height adjusting device 30 to complete the assembly of the leg 1.

Next, the leg 1 according to the present invention is composed of a top plate bottom surface such as a desk or a table, a seat bottom surface of a chair, or two layers of the fixing plate 40 fixed in advance to the support shaft 20. It can be fixed to the upper and lower surfaces of the bed by a coupling means such as a screw, and can be installed on the furniture.

Next, the height adjustment function of the leg according to the present invention will be described.

With the fasteners 32 and 33 released, as shown in FIG. 3A, the support shaft 20 is moved from the leg body 10 until the user reaches the desired height while looking at the ruler formed on the support shaft 20. Pull it up or push it into the leg body (10). After the height is selected, the user inserts a separately provided adjustment wrench (not shown) into the wrench groove 341 of the wrench bolt 34 and rotates it in the locked direction (for example, clockwise).

Thus, by turning the wrench bolt 34, when the wrench bolt 34 goes deeper into the threaded hole 321 of the first fastener 32 accommodated in the fastener insertion hole 311, the fastener insertion hole The second fastener 33 accommodated in 311 moves toward the first fastener 32, so that the pressing surfaces 322, 332 of the fasteners 32, 33 are supported by the support shaft 20, as shown in FIG. The first fastener 32 and the second fastener 33 are fastened to the fastener insertion hole 311 due to the shape of the fastener insertion hole 311 and the fasteners 32 and 33. While the linear movement without rotation in the), while the coil spring 35 is positioned between the fasteners (32, 33) to exert a resilient force on both sides, the first fastener 32 and the second fastener (33) Will not work against each other.

Therefore, the support shaft 20 can be easily fixed at the height required by the user by the wedge-peel effect of the first fastener 32 and the second fastener 33, due to the relatively long support shaft 20 The limit of the height adjustment can be greatly expanded compared to the prior art.

FIG. 7 is a perspective view showing a state before a leg is completely assembled according to the second embodiment of the present invention, wherein the leg 1 is housed in a leg body 10 having a tubular shape and in the leg body 10. FIG. While adjusting the height by tightening the two support shaft 20 in the shape of a rod, the upper end of the leg body 10 and the two support shaft 20 penetrated therein Steel plate-shaped fixing plate 40 having a device 30 and a plurality of screw grooves 41 formed to be attached to the lower surface of the furniture, such that they are fixed at right angles to the support shafts 20. Equipped with.

In more detail, the leg body 10 may be formed of the same material as the first embodiment described above, for example, in a cylindrical shape such as a circle (see FIG. 7), an ellipse, a polygon including a quadrangle, and the like. In addition, as in the first embodiment, the leg body 10 has a wrench insertion hole 11 formed corresponding to the fastener insertion hole 311 of the height adjusting device 30 on the upper side thereof. Two protrusions are inserted into the coupling grooves 313 of the height adjusting device 30 on the inner surface of the main body 10 to prevent the height adjusting device 30 from being rotated at the upper end of the leg body 10. Not shown). In addition, as in the first embodiment, if at least two legs 1 according to the present invention are used in a desk or a table or the like, an attachment plate for installing a screen plate (not shown) between the legs 1 is provided. The magnet 12 and the lower hook 13 may be provided.

The two support shafts 20 are accommodated while being spaced apart from each other in the leg body 10 so as to slide up and down through two support shaft insertion holes 312 formed in the height adjusting device 30. The support shafts 20 are made of the same material as in the first embodiment, but a plurality of notches (not shown) are formed on the surface of one of the support shafts, so that the height of the legs is adjusted when the user adjusts the height. While measuring, it serves as a ruler to easily adjust the height of the furniture.

FIG. 8 is a cross-sectional view of the main body of the height adjusting device shown in FIG. 7, and FIG. 9 is a cross-sectional plan view of a fastening device of the height adjusting device shown in FIG. 7, and FIG. 10 is a view of the fastener assembly shown in FIG. 9. Plane section view. The height adjusting device 30 also has a main body 31 made of plastic, for example in a cylindrical shape (see FIGS. 7 and 8), which penetrates vertically from both sides of the circular cross section to both sides. Two support shaft insertion holes 312 formed spaced apart from each other, and formed in the center so as to communicate with the two support shaft insertion holes 312 while horizontally penetrating laterally at approximately the middle height of the main body 31, for example, hexagonal Fastener insertion hole 311 of the polygonal shape, such as the locking jaw 314 acts as a limit point of the insertion depth when the height adjusting device 30 is fitted to the leg body 10, and the leg body ( At least one coupling groove 313 is formed along the length of the outer circumferential surface to accommodate the protrusions of the leg body 10 so as not to rotate at the top of the 10).

In addition, in the fastener insertion hole 311 of the height adjusting device 30 as in the first embodiment, as shown in FIG. 9, the fastener insertion hole (32) is provided with a threaded hole 321 formed therein. A second fastener 32 having the same hexagonal column shape as the first fastener 32 with a first fastener 32 having a hexagonal column shape corresponding to the shape of 311 and a hole 331 penetrating therein. ), The wrench bolts 34 are inserted into the first fastener 32 and the second fastener 33 at the same time so as to rotate the fasteners 32 and 33 linearly, and the first fastener ( It is provided with a coil spring 35 positioned between the 32 and the second fastener 33 so as to surround the wrench bolt 34 to apply elasticity to the fasteners 32 and 33 so as to maintain proper spacing.

As shown in FIG. 10, the first fastener 32 and the second fastener 33 fitted to the wrench bolt 34 to face each other are symmetrically pressed surfaces formed concavely inclined from opposite surfaces to both outer sides. 322 and 332 are formed, respectively.

On the other hand, Figure 11 is a cross-sectional view of the cap shown in Figure 5 is mounted on the upper portion of the leg according to the second embodiment of the present invention, the cap 50 has at least one magnet 52 on the top In the same manner as in the first embodiment, the fixing plate 40 can be easily attached to and detached from the fixed plate 40 made of steel. Referring back to FIG. 7, a lower cap 60 is inserted into the lower portion of the leg 1 according to the present invention to protect the bottom.

In the method of assembling the legs according to the second embodiment of the present invention, as shown in FIG. 9, the two support shafts 20 to which the pressing surfaces 322 and 332 of the fasteners 32 and 33 are respectively inserted are respectively directed. Since the two support shafts 20 are fitted together and inserted into the two support shaft insertion holes 312 of the height adjusting device 30, they are the same as in the above-described first embodiment, and thus the detailed description thereof will be omitted. Shall be.

In addition, the height adjustment function of the leg according to the second embodiment of the present invention, while the user reaches the desired height while watching the ruler formed on one of the support shaft 20, the support shaft 20 to the main body ( 10) except that it is pulled up or pushed into the leg body 10, and each pressing surface 322,332 of the fasteners 32,33 abuts the sides of the two support shafts 20 and simultaneously tightens them. Since the first embodiment is the same as the first embodiment, detailed description thereof will be omitted.

Therefore, the support shafts 20 are easily fixed at the height required by the user by the wedge-peeling effect of the first fasteners 32 and the second fasteners 33, and can support a load of several tons. And, because of the relatively long support shaft 20, the limit of the height adjustment can be greatly expanded compared to the prior art.

According to the present invention as described above, while having a height adjustment device that the user can easily adjust the height with a wrench on the upper end, a ruler that can easily measure the height when the user adjusts the height is formed, structurally robust Of course, the user can easily adjust the height of the furniture while measuring the height of the legs, but the limit of the adjustment is greatly improved, so that the furniture can be used semi-permanently for children's furniture and improve the overall appearance. It can be effective.

Claims (7)

A leg main body 10 having a tubular shape and having a wrench insertion hole 11 formed at an upper side thereof; At least one support shaft 20 accommodated in the leg body 10 and having a rod shape; A height adjusting device (30) inserted into an upper end of the leg body (10) to adjust the height by tightening the at least one support shaft (20) penetrated therein; For example, a plurality of screw grooves (41) are formed to be attached to the lower surface of the furniture, such as a plate-shaped fixing plate (40) which is fixed at a right angle to the support shaft (20). According to claim 1, wherein the height adjustment device 30 is provided with a main body 31, the main body 31 is formed so as to be biased to one side from the center while penetrating up and down to receive the support shaft 20 The shaft insertion hole 312 is formed to be oriented from the center so as to communicate with the support shaft insertion hole 312 while penetrating horizontally at the middle height of the main body 31, for example, a fastener insertion hole made of polygonal shape such as hexagon. 311, and the height adjustment device 30 is adjustable height, characterized in that the engaging jaw 314 is formed to act as a limit point of the insertion depth when it is fitted to the leg body (10). The fastener insertion hole 311 according to claim 2, wherein the fastener insertion hole 311 in the main body 31 of the height adjusting device 30 is provided with a threaded hole 321 therein. Corresponding to, for example, the first fastener 32 in the shape of a hexagonal column and the second fastener 33 having the same shape as the first fastener 32 with a hole 331 penetrating therein. Wrench bolts 34, which are fitted to the first fasteners 32 and the second fasteners 33 at the same time to rotate the fasteners 32 and 33 by rotating them, and the first fasteners 32 and The coil spring 35 is positioned between the second fasteners 33 so as to surround the wrench bolts 34 so as to apply elasticity to the fasteners 32 and 33 so as to maintain proper spacing. Height adjustable legs. 4. Each of the first fasteners 32 and the second fasteners 33 is formed with concave and symmetrically formed crimp surfaces 322 and 332, respectively, which are inclined from one or both outer portions to opposite sides. Height adjustable legs, characterized in that. 4. The leg of claim 3, wherein a magnet may be provided in the wrench groove (341) in the head of the wrench bolt (34). The leg of claim 1, wherein the at least one support shaft (20) is provided with a ruler such as a plurality of notches. 2. The leg (1) according to claim 1, wherein the leg (1) is provided with at least one magnet (52) at an upper portion thereof with a hollow portion (51) formed thereon, so that the leg (1) can be easily attached and detached to the steel fixing plate (40). Height adjustable leg, characterized in that it further comprises a cap 50 to be able to.