KR100896467B1 - Adjustable height device for the leg of a table - Google Patents

Abstract

In order to improve the convenience of the user, a height of the upper surface of the table is provided that can be adjusted according to the user's body shape. The improved table includes a first leg connected to the upper surface of the table and a second leg connected to the first leg to contract and extend in the longitudinal direction and support the upper surface so that the upper surface is horizontal. The locking portion is provided on the first leg or the second leg for locking or releasing the leg by means of the actuating lever. With this structure, the improved table can be used for various body shapes of the user at home, office or school.

Description

Height adjustable table {ADJUSTABLE HEIGHT DEVICE FOR THE LEG OF A TABLE}

The present invention relates to a height-adjustable table, and more particularly, to lock and unlock legs that can be stretched and stretched by a simple pivoting operation of the operating lever. The improved table that can be adjusted in height to easily adjust the height of the upper surface.

School or modern office or industrial environments provide work areas with various types of functional furniture components. These furniture components include work surfaces and table tops used for a variety of purposes, from drafting to writing and word processing functions. Therefore, these surfaces must be able to support various facilities such as typewriters and computer terminals. At the same time, these surfaces must be able to be adjusted vertically so that various tasks and various users can easily and effortlessly facilitate them.

The same applies to the footrest provided on the pedestal of the table, and the height of the footrest should be adjustable for convenient use by various users.

In particular, such tables are more serious for students in elementary school, middle school, high school, and university. In other words, even in the case of classmates who are taught in a classroom, the physical condition between individuals is quite different. However, such a parish table is made of a standardized step by step in consideration of the average physical condition of a large number of students. For this reason, there were considerable inconveniences for students using the teaching aid table which did not fit the body size.

One type of the height-adjustable table described above has been proposed in U.S. Patent No. 5,289,782 published by John J. Rizzi et al. On March 1, 1994. This is referred to Figure 9 showing a table capable of height adjustment showing an example of the prior art. As shown therein, the conventional table 10 includes a table top surface 12; The first leg portion 14a connected to the upper surface of the table 12, and the second leg portion 14b, which is fitted to the first leg portion 14a and provided so that the first leg portion 14a can be lifted or lowered. A pair of telescoping legs 14 capable of contracting and extending; An equilibrium mechanism (not shown) comprising weight means (not shown) disposed and provided between the pair of legs; And a pair of pedestals 18 provided at the lower end of the second leg portion 14b of the leg 14. However, such a table is a device for adjusting the height of the upper surface of the table, so it is necessary to use a counterbalance mechanism equipped with a weight means consisting of racks, pinions, chains, etc. There was a problem such as nonconformity. In addition, the footrest 19 provided on the pedestal of the table is inconvenient for users of various body types because it is a structure that can not adjust the height.

Technical challenge

Therefore, the present invention is to solve the above problems, an object of the present invention is to simplify the height of the table top according to the user's body by locking or unlocking the stretchable and stretchable legs by a simple operation of the operating lever. It is to provide an adjustable height adjustable table.

Technical solution

In order to achieve the above objects, the present invention provides a table top surface;

A first leg connected to the upper surface of the table, a second leg inserted into the first leg or the first leg to be contracted and extended in a longitudinal direction, and for supporting the upper surface of the table to be horizontal; A plurality of fixing rods protruding from an end of one of the legs and the second leg and positioned inside the other one, and a plurality of fixing grooves are continuously provided along the longitudinal direction on the outer circumferential surface of each of the fixing rods, A leg member provided with a first guide hole in one of the first leg and the second leg at a position corresponding to the fixing groove; And

A mounting hole is provided vertically to fix the first leg and the second leg to pass through it, and an operating chamber having at least one surface open at an adjacent position of the mounting hole is provided, and a partition between the mounting hole and the operating chamber is provided. A fastener body provided with a second guide hole, a fastener slidably fitted in a part of the second guide hole of the fastener body, and rotatably installed on both side walls of the operation chamber of the fastener body to fix the fastener. It includes a locking member made of an operating lever for pushing or stopping,

In order to adjust the height of the upper surface of the table, when the operating lever is rotated in one direction, the fastener can be retracted from the fixing groove of the fixing rod can freely vary the length of the leg member, the other side of the operating lever When rotated in the direction, the fastener is inserted into the fixing groove of the fixing rod is fixed to move to provide a height adjustable table that can change the length of the leg member.

Preferably, a guide protrusion having a guide chamber protrudes toward the operating chamber so that the fastener is slidably fitted around the second guide hole of the partition.

Preferably, a fixing flange is provided at one end of the fixture to prevent the fixture from further advancing in the direction of the installation hole from the guide chamber of the guide protrusion.

Preferably, one end of the fixture is provided with an installation groove, the installation groove is provided with a compression spring for providing an elastic force, the adjacent position of the compression spring is inserted into the inlet of the installation groove and press the compression spring A presser that is pressed by the actuating lever is provided.

Preferably, the pressing hole is a pressing rod that is fitted to the installation groove; And a pressing plate integrally formed at one end of the pressing rod.

Preferably, the guide hole between the installation hole of the lock body and the pressing rod of the pressing hole further includes a guide guide shaft for guiding the progress of the fixture through the installation groove of the fixture.

Favorable effect

As mentioned above, the height-adjustable table according to the preferred embodiment of the present invention, the operating lever and the fastener capable of the forward or backward operation by the rotational operation of the operating lever to one of the first leg or the second leg. By providing. When adjusting the height of the upper surface of the table, it is possible to easily adjust the length of the leg member effortlessly by locking and unlocking the stretchable and stretchable legs by simply rotating the operating lever. .

The objects and advantages of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings. In the accompanying drawings;

1 is an overall perspective view of a height adjustable table according to an embodiment of the present invention;

Figure 2 is an exploded perspective view of the leg member and the locking member in Figure 1;

3, 4 and 5 are partially enlarged cross-sectional views of the table of FIG. 1, in which FIG. 3 is a view of a state in which the first leg portion of the leg is locked, and FIG. Unlocked state, Figure 5 is a view of the leg is stretched and extendable.

6, 7 and 8 are vertical cross-sectional views of the table of FIG. 1 from above, FIG. 6 is a view of the first leg of the leg locked, and FIG. 7 is a view of the first leg of the leg unlocked. 8 is a view of the leg stretchable and extendable.

9 is a perspective view of a height adjustable table showing an example of the prior art.

Best Mode for Carrying Out the Invention

Hereinafter, with reference to the accompanying drawings will be described in detail with respect to the height adjustable table according to an embodiment of the present invention.

1 shows an entire height adjustable table according to a preferred embodiment of the present invention. Figure 2 shows an exploded state of the leg member and the locking member in FIG.

1 and 2, the height-adjustable table 100 according to the preferred embodiment of the present invention maintains the table top surface 102 and the table top surface 102 in a horizontal state and has a length that can be stretched and retracted. It consists of a variable leg member 110 and a locking member 120 for controlling the tension and contraction of the length of the leg member (110).

Leg member 110 according to the present invention is fitted to the first leg 112, the first leg 112 connected to the table top surface 102 or the first leg 112 is fitted can be contracted and extended in the longitudinal direction And a plurality of fixing rods protruding from an end of one of the second leg 114 and one of the first leg 112 and the second leg 114 to support the table top horizontally. 116, a plurality of fixing grooves 116a are intermittently provided along the longitudinal direction on the outer circumferential surface of each fixing rod 116, and the first legs 112 at positions corresponding to the fixing grooves 116a and One of the second legs 114 is provided with a first guide hole 112a. For reference, the leg member 110 shown in FIGS. 1 and 2 is shown in a structure in which the second leg 114 is fitted to the first leg 112, and thus the second leg 114 is the first leg. 112 is inserted into the structure that can be contracted and extended in the longitudinal direction, the fixing rod 116 protrudes from the upper end from the end of the second leg 114 is located inside the first leg 112, the first The leg 112 is provided with a first guide hole 112a at a position corresponding to the fixing groove 116a formed in the fixing rod 116. Preferably, the first leg 112 and the second leg 114 is a hollow tubular shape, but is not limited thereto. Preferably, the fixed rod 116 is in the form of a rod filled, but is not limited thereto.

The fixing groove 116a is preferably formed along the outer circumferential surface of the fixing rod 116.

2 and 3, the locking member 120 according to the present invention is provided with a mounting hole (122a) vertically to be fixed by passing through one of the first leg 112 and the second leg (114). And an operating chamber 122b having at least one surface opened at an adjacent position of the installation hole 122a and a second guide hole 124a in the partition 124 between the installation hole 122a and the operation chamber 122b. Is provided with a fastener body 122, a fastener 126 a part of which is slidably fitted in the second guide hole 124a of the fastener body 122, and the operation chamber 122b of the fastener body 122 It is installed to be rotatable by the rotating shaft (122c) on both side walls of the) comprises a locking member consisting of an operating lever 128 for pushing or stopping the fixture 126.

The inner diameter of the installation hole 122a is preferably formed to correspond to or larger than the outer diameter of the first leg 112 or the second leg 114. The fastener body 122 is preferably fixed to the first leg 112 or the second leg 114 by fastening means such as a screw 129.

It is preferable that the front end of the fixture 126 is streamlined. This allows the fastener 126 to be easily fitted into the first guide hole 112a of the first leg 112 and the second guide hole 124a of the lock body 122.

A guide protrusion 124b having a guide chamber 124c is projected toward the operating chamber 122b around the second guide hole 124a of the partition 124 so that the fixture 126 is slidably fitted.

One end of the fastener 126 is provided with a fixed flange 126a, and the fixed flange 126a is caught by the outside of the second guide hole 124a so that the fastener 126 is moved from the guide chamber 124c of the guide protrusion 124b. It prevents further advancement in the direction of the installation hole 122a.

An installation groove 126b is provided at one end of the fixture 126, and an installation groove 126b is provided with a compression spring 130 for providing an elastic force, and an installation groove 126b at an adjacent position of the compression spring 130. A pressing hole 132 is provided, which is inserted into the inlet of the pressing member and presses the compression spring 130 and is pressed by the operating lever 128. The pressing hole 132 is a pressing rod (132a) fitted into the installation groove (126b); And a pressing plate 132b integrally formed at one end of the pressing rod 132a. At least one pressing protrusion 128a is formed on the front wall surface of the operating lever 128 that rotates along the pressing hole 132 when the operating lever 128 rotates. The pressing protrusion 128a is a portion in contact with the pressing plate 132b of the pressing hole 132. For reference, the elastic force of the compression spring 130 may be designed to withstand the load on the table top surface 102.

Fixture for guiding the progress of the fixture 126 is penetrated through the installation groove 126b of the fixture 126 between the mounting hole 122a of the lock body 122 and the pressing rod 132a of the pressing hole 132 Guide shaft 134 may be further included. One end of the fixture guide shaft 134 is pivotally coupled to one side of the actuating lever 128. To this end, a rotation ring 134a may be integrally formed at one end of the fixture guide shaft 134.

Rotating ring 134a is pivotally coupled to the rotating shaft 122c for the operation lever 128. To this end, the rotation ring 134a is preferably formed in a ring shape, but is not limited thereto.

At least one gap holding protrusion 124d is formed on an inner wall of the operation chamber 122b. The gap holding protrusion 124d is for minimizing the portion where the operating lever 128 is in contact with the inner wall of the operating chamber 122b to assist the rotation operation of the operating lever 128.

In the height-adjustable table according to the present invention, in order to adjust the height of the table upper surface 102, when the operating lever 128 is rotated in one direction, the fixture 126 is a fixing groove 116a of the fixing rod 116 It is possible to retract from the leg member 110 can freely vary the length, and when the operating lever 128 is rotated in the other direction, the fixture 126 is fixed to the fixing groove 116a of the fixing rod 116 It is inserted and fixed so as not to move can change the length of the leg member.

Operation of the height-adjustable table configured as mentioned above will be described in detail with reference to the accompanying FIGS. 3 to 8.

Referring to FIGS. 3 and 6, the upper end of the second leg 114 of the leg member protrudes toward the upper portion of the fixing rod 116, and the upper end of the first leg 112 on the upper end of the second leg 114. The lower part is fitted. In addition, the lock body 122 is fitted to the outer circumferential surface of the first leg 112 and is fixed by a fastening means such as a screw 129.

In particular, the actuation lever 128 is located vertically in the actuation chamber 122b of the lock body 122. At this time, the upper rear end portion of the operation lever 128 presses the pressing plate 132b of the pressing hole 132. In this case, the pressing rod 132a of the pressing hole 132 compresses by pressing the compression spring 130 and simultaneously pushes the pressing hole 132. In this case, the streamlined tip of the pressing hole 132 is fitted into the fixing groove 116a of the fixing rod 116 to be in close contact. In this way, the first leg 112 and the second leg 114 of the leg member 110 is fixed without moving in the current state.

4 and 7, in order to adjust the height of the table top surface 102, the worker grips the lower end of the operating lever 128 and rotates it counterclockwise. At this time, the pressing protrusion 128a of the operation lever 128 is reversed from the pressing opening 132. Accordingly, the pressing holes 132 are retracted together in the direction of the pressing protrusion 128a by the elastic force of the compression spring 130. In this state, the elastic force of the compression spring 130 may overcome the load on the table top surface 102, thereby preventing the table 100 from lowering itself.

In this state, when the operator raises or lowers to fit the user's body shape of the table 100, the fixture 126 is separated from the fixing groove 116a of the fixing rod 116, which is previously located, which is FIG. And are shown in detail in FIG. 8.

If the worker forcibly lifts the upper surface of the table 102, the fixture 126 is reversed by overcoming the elastic force of the compression spring 130 to escape from the fixing groove 116a of the fixing rod 116 to the fixing rod 116 ) Is located on the outer circumferential surface.

Thereafter, the worker lifts the table top surface 102 to the required position so that the fixture 126 is fitted into the fixing groove 116a at the corresponding position. Subsequently, the worker rotates clockwise after holding the operation lever 128. Then, the pressing protrusion 128a of the operating lever 128 presses the pressing plate 132b of the pressing hole 132 again to allow the compression spring 130 to be compressed. At the same time, the fixture 126 is fixed by the pusher 132 is not moved. In this state, even if an external force is applied to the table upper surface 102, it does not fall or rise. Here, the fastener 126 is a smooth straight operation without play along the fixture guide shaft 134 installed in the lock body 122. In addition, the interval maintaining protrusion 124d provided on the inner wall of the operation chamber 122b of the lock body 122 allows the both sides of the operation lever 128 to be in line contact instead of surface contact, so that the rotation operation is smoothly assisted. .

In the height adjustable table according to the present invention, in order to adjust the height of the upper surface of the table, when the operating lever is rotated in one direction, the fastener can be retracted from the fixing groove of the fixing rod so that the length of the leg member can be changed freely. When the operation lever is rotated in the other direction, the fixture is fitted into the fixing groove of the fixing rod and fixed to move so that the length of the leg member can be changed. Due to this structure, it can be applied to tables used in homes, businesses, schools and the like.

In the above, the present invention has been described in detail with reference to the above-described embodiments, but the present invention is not limited thereto, and those skilled in the art may change or improve the technology within the scope of ordinary knowledge.

Claims (8)

Table top; A first leg connected to the upper surface of the table, a second leg inserted into the first leg or the first leg to be contracted and extended in a longitudinal direction, and for supporting the upper surface of the table to be horizontal; A plurality of fixing rods protruding from an end of one of the legs and the second leg and positioned inside the other one, and a plurality of fixing grooves are continuously provided along the longitudinal direction on the outer circumferential surface of each of the fixing rods, A leg member provided with a first guide hole in one of the first leg and the second leg at a position corresponding to the fixing groove; And A mounting hole is provided vertically to fix the first leg and the second leg to pass through it, and an operating chamber having at least one surface open at an adjacent position of the mounting hole is provided, and a partition between the mounting hole and the operating chamber is provided. A fastener body provided with a second guide hole, a fastener slidably fitted in a part of the second guide hole of the fastener body, and rotatably installed on both side walls of the operation chamber of the fastener body to fix the fastener. It includes a locking member made of an operating lever for pushing or stopping, In order to adjust the height of the upper surface of the table, when the operating lever is rotated in one direction, the fastener can be retracted from the fixing groove of the fixing rod can freely vary the length of the leg member, the other side of the operating lever When rotated in the direction, the fixture is fitted into the fixing groove of the fixing rod is fixed so as not to move the length of the leg member, and Height-adjustable table, characterized in that formed on the inner wall of the operating chamber at least one gap holding protrusion. delete The table of claim 1, wherein at least one push stone part is provided on one side of the operating lever. The table of claim 1, wherein a guide protrusion having a guide chamber protrudes toward the operating chamber so that the fixture is slidably fitted around the second guide hole of the partition. 5. The table of claim 4, wherein a fixing flange is provided at one end of the fixture to prevent the fixture from further advancing in the direction of the installation hole from the guide chamber of the guide protrusion. According to claim 4, One end of the fixture is provided with an installation groove, The installation groove is provided with a compression spring for providing an elastic force, the adjacent position of the compression spring is inserted into the inlet of the installation groove to the compression spring Height-adjustable table, characterized in that the pressing sphere which is pressed by the operating lever is provided. According to claim 6, The pressing hole is a push rod which is fitted into the installation groove; And a pressing plate integrally formed at one end of the pressing rod. The height adjustment method of claim 7, further comprising a fixture guide shaft penetrating into an installation groove of the fixture to guide the progress of the fixture between the installation hole of the lock body and the pressing rod of the presser. Table available.

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