KR102310961B1 - Leg support for folding table - Google Patents

Abstract

The present invention relates to a leg support for a foldable table installed between a top plate and a leg of the foldable table and having a function of supporting the unfolded leg from being easily folded. According to the present invention, the leg support for a foldable table comprises: a leg connecting rod having an end fixed to a part of a leg; a table connecting pipe formed through a hollow in the longitudinal direction so that the inside of the leg connecting rod is inserted; a slider assembled to be fitted into a slider assembly hole; a pressure ball for selectively restricting the movement of the leg connecting rod by pressing the leg connecting rod passing through the slider; a spring support cap coupled to an upper part of the table connecting pipe; a pressure spring installed within an installation space of the spring support cap to elastically press the slider in the downward direction; and a lever assembled to a lever assembly hole and installed to perform a vertical seesaw motion.

Description

Leg support for folding table {LEG SUPPORT FOR FOLDING TABLE}

The present invention relates to a leg support for a folding table, and more particularly, to a leg support for a folding table installed between a top plate of a folding table and a leg and having a function of supporting an unfolded leg from being easily folded.

In general, folding tables widely used for tables, tables, and camping tables have a round or square top, a plurality of legs that are installed in a foldable manner on the lower surface of the top to support the top, and support not to be easily folded when the legs are spread out. It consists of a leg support.

An example of such a folding table is disclosed in Republic of Korea Patent Registration No. 10-1632362, Utility Model Registration No. 20-0163862, and the like.

However, the leg support applied to the conventional folding table serves to support the leg as it unfolds, but when an impact is applied from one direction, there is a problem in that the spread leg support is easily folded and cannot support the leg.

1) Republic of Korea Patent No. 10-1632362 (Registration Date: June 15, 2016), Title of Invention: "Folding Leg Structure for Table" 2) Republic of Korea Registered Utility Model No. 20-0163862 (Registration Date: October 04, 1999), Designation: "Leg Standing State Unlocking Device of Folding Leg Table" 3) Republic of Korea Registered Utility Model No. 20-0291709 (Registration Date: September 28, 2002), Design Name: "Folding Table Leg" 4) Republic of Korea Registered Utility Model No. 20-0469344 (Registration Date: September 30, 2013), Design Name: "Foldable Table Leg with Safety Guide"

The present invention has been proposed to improve the above problems, and its purpose is to have a structure to support the legs while being adjusted in length, which is installed between the upper plate of the table and the legs and serves to support the unfolded legs not to be easily folded. To provide a leg support for a folding table that improves convenience and stability by making it easier to adjust the length by pressing the lever and improving the problem of not being able to support the legs while folding as in the prior art when an external shock is applied. there is

The above object is to be installed between the upper plate and the legs in a folding table, and a leg connecting rod having an end fixed to a part of the leg, an end fixed to a lower surface part of the upper plate, and a longitudinal direction in which the leg connecting rod is inserted is formed through a hollow along , A table connection pipe through which the lever assembly hole is formed to communicate with the inside at a position lower than the protrusion on a part of the outer surface, and the slider assembly hole is assembled, and a rod through hole into which the leg connection rod is inserted is formed through the longitudinal direction, A slider having a plurality of ball insertion holes communicating with the rod through hole at a predetermined equal interval at a position corresponding to the ball guide inclined portion on the outer surface, and the slider is inserted into the ball insertion hole of the slider and the slider is fitted into the slider assembly hole. and a pressure ball for selectively restricting movement of the leg connecting rod by pressing the leg connecting rod passing through the slider, coupled to the upper portion of the table connecting pipe, and opening downward to communicate with the hollow of the table connecting pipe An installation space is formed, and a spring support cap having a rod insertion hole through which a leg connecting rod is inserted into the installation space is formed on the upper surface, and a pressure spring installed within the installation space of the spring support cap to elastically press the slider in the downward direction. And, it is assembled in the lever assembly hole and installed to perform a seesaw movement up and down, and a connection piece fitted into the lever assembly hole, a pressing piece integrally formed on the outside of the connection piece and exposed to the outside, and the connection piece are integrally formed inside It is inserted into the inside of the table connection pipe and is located below the slider and has a through hole opened to one side in the center and is composed of a lever consisting of a support ring formed so that the leg connection rod can pass through, the table connection pipe, the slider, and the pressure When the ball, pressure spring, spring support cap, leg connecting rod, and lever are assembled, the pressure spring presses the slider and the pressure ball moves into the ball. As it descends obliquely along the inner slope, it slides into the ball insertion hole and presses and holds the leg connecting rod. As the pressure ball is pushed out, the force that presses the leg connecting rod is weakened and the length is increased. It is achieved by a leg support for a folding table, characterized in that it is configured to operate to reduce the length by pushing the leg connecting rod after it is raised so that the force pressing the leg connecting rod disappears.

And in order to prevent the support ring of the lever from being inclined downward and interfering with the leg connecting rod to interfere with the operation of the leg connecting rod, it protrudes inward to be parallel to the bottom surface of the lever assembly hole to support and support a part of the supporting ring A stopper is formed to maintain a horizontal state when the lever is released, and a predetermined gap is formed between the lower surface of the slider and the support ring when the lever is placed horizontally while the slider is moved to the lowest position. It is characterized in that when the lever does not interfere with the downward movement and the support ring is lifted by pressing the lever, the support ring is configured to lift the slider.

And the protrusion is divided into three equal parts inside the table connecting pipe and installed separately from the inner surface of the table connecting pipe, and the pressure ball is installed in three places to correspond to the protrusion, and each protrusion is positioned back and forth through a positioning means. Doedoe configured to be movable, the position adjusting means is formed through three places of the table connection pipe to correspond to each protrusion and has a female screw formed therein, and is fastened to the screw hole from the outside of the table connection pipe, and the end is a protrusion It is fixed to a bar and consists of an adjustment bolt that moves the protrusion forward by loosening and tightening. It is characterized in that it is configured to advance the pressing force of the pressing ball.

The leg support for a folding table according to the present invention is installed between the top plate of the table and the legs to help the legs to be folded while reducing the length when the legs are folded. However, in a state in which the length is increased to spread the legs, even if an external force is applied, stability is improved because the phenomenon does not decrease, and the convenience is improved because the length is easily shortened when the lever is pressed and force is applied. .

1 is a front view schematically showing the structure of a folding table to which the present invention is applied;
2 is a cross-sectional view showing the configuration of a leg support for a folding table according to the present invention;
3 is an exploded cross-sectional view showing the configuration of a leg support for a folding table according to the present invention;
4 is a cross-sectional view taken along line AA of FIG. 2;
5 is a cross-sectional view showing an operating state of the leg support for a folding table according to the present invention;
6 is a partial cross-sectional view showing another embodiment of the protrusion applied to the present invention;
7 is a cross-sectional view taken along line BB of FIG. 6 .

The present invention will be described in detail with reference to the accompanying drawings as follows.

1, the leg support for a foldable table according to the present invention is applied to a foldable table, and is installed between the upper plate 10 and a plurality of legs 20 of the foldable table, so that the legs 20 can be easily It serves as a support so that it does not fold.

2 to 4, the leg support for a folding table according to the present invention will be further described with reference to the leg connecting rod 100, the table connecting pipe 200, the slider 300, the spring support cap 600, the pressure spring ( 500), and a lever 700 is configured.

First, the leg connecting rod 100 is configured to have a sufficient length, and is assembled to be inserted into the table connecting pipe 200 to adjust the overall length of the leg support, and the end is installed to be fixed to a part of the leg 20 . Here, the method of fixing to the leg 20 is to be fixed through welding. In addition to the welding method, it may be fixedly installed by a ring or a bolt method.

Next, the table connecting pipe 200 is configured to have a sufficient length like the leg connecting rod 100 , and is formed through the hollow 210 in the longitudinal direction so that the leg connecting rod 100 is inserted therein. And on the upper inner surface, the protrusion 220 is formed to protrude inward, the slider assembly hole 224 having a smaller diameter than the hollow 210 is formed through the center in the center, and the upper surface of the protrusion 220 is a ball that slopes downward from the outside to the inside. A guide inclined portion 222 is formed. In addition, a lever assembly hole 230 is formed to communicate with the inside at a position lower than the protrusion 220 in a portion of the outer surface. The end of the table connection pipe 200 is fixed to a portion of the bottom surface of the upper plate 10 and the length is adjusted together with the leg connecting rod 100 to enable the leg 20 to be folded or unfolded. Here, the method of fixing to the upper plate 10 is to be fixed through welding, and in addition to the welding method, it may be fixedly installed by a ring or a bolt method.

Next, the slider 300 is assembled to be inserted into the slider assembly hole 224 of the table connection pipe 200, and a rod through hole 310 into which the leg connection rod 100 is inserted is formed through the longitudinal direction. , a ball insertion hole 320 communicating with the rod through hole 310 is formed through the outer surface at a predetermined equal interval at a position corresponding to the ball guide inclined portion 222 .

And the pressure ball 400 is installed in the ball insertion hole 320 of the slider 300 is inserted. The pressing ball 400 is caught in a certain section while moving along the ball guide inclined portion 222 so that the slider 300 is inserted into the slider assembly hole 224 to maintain the hanging state, and while being caught, the ball insertion hole 320 The movement of the leg connecting rod 100 is selectively restricted by pressing the leg connecting rod 100 passing through the slider 300 while moving inward.

Next, the spring support cap 600 is coupled to the upper portion of the table connection pipe 200, and an installation space 610 communicating with the hollow 210 of the table connection pipe 200 is formed therein by opening downward. In the upper surface, the rod insertion hole 620 through which the leg connecting rod 100 is inserted is formed through the installation space 610 .

At this time, the method in which the spring support cap 600 is coupled to the upper portion of the table connection pipe 200 may be fastened by a screw method. That is, the male screw part 202 is formed in the upper part of the table connection pipe 200 , and the female screw part 602 corresponding to the male screw part 202 is formed in the lower part of the spring support cap 600 , so that the spring support cap 600 is formed. ) is placed on the table connection pipe 200 and fastened with a screw method while rotating.

Next, the pressure spring 500 is installed in the installation space 610 of the spring support cap 600 is configured to elastically press the slider 300 in the downward direction. That is, the pressure spring 500 has an upper end installed in close contact with the lower surface of the installation space 610 of the spring support cap 600, and a lower end installed in close contact with the upper part of the slider 300, and installed in a compressed state. It is configured to elastically press the slider 300 downward by the restoring force.

Next, the lever 700 is formed integrally with the connection piece 710 fitted into the lever assembly hole 230 of the table connection pipe 200 and the connection piece 710 to be exposed to the outside and larger than the connection piece 710 . The size of the pressing piece 720 and the connecting piece 710 is integrally formed inside the table connection pipe 200, and is located below the slider 300 and has a through hole 732 opened to one side in the center. ) is formed and is composed of a support ring 730 formed so that the leg connecting rod 100 can pass therethrough.

This lever 700 is assembled to the lever assembly hole 230 and installed to perform a seesaw movement up and down. The support ring 730 is operated to push up the slider 300 while being lifted upward.

Here, the reason that the lever 700 maintains a horizontal state when no force is applied is that when the support ring 730 of the lever 700 is inclined downward, it interferes with the leg connecting rod 100 and the Because it interferes with operation. Therefore, in order to prevent the support ring 730 from being inclined in the downward direction, the stopper 240 protrudes inward so as to be horizontal with the bottom surface of the lever assembly hole 230 to support and support a part of the support ring 730. .

And it is preferable to form a predetermined gap between the lower surface of the slider 300 and the support ring 730 when the lever 700 is placed horizontally in a state in which the slider 300 is moved to the lowermost end. Then, the lever 700 does not interfere with the downward movement of the slider 300 , and when the support ring 730 is lifted by pressing the lever 700 , the support ring 730 lifts the slider 300 .

And in the method of assembling the lever 700, after cutting the table connection pipe 200 along a portion corresponding to the lever assembly hole 230 in the table connection pipe 200, the connection piece 710 of the lever 700 is inserted into the lever assembly hole. After it is placed on the 230, the table connection pipe 200 may be joined again by welding. Then, the lever 700 is assembled so that the pressing piece 720 is exposed to the outside and the support ring 730 is positioned in the hollow 210 of the table connection pipe 200 .

On the other hand, in the present invention, the position of the protrusion 220 can be adjusted when the pressure ball 400 is worn or the ball guide inclined portion 222 is worn and the force for pressing the pressure ball 400 to press the leg connecting rod 100 is weakened. can be configured to

That is, as shown in FIGS. 6 and 7 , the protrusion 220 is divided into three equal parts inside the table connecting pipe 200 and installed separately from the inner surface of the table connecting pipe 200 , and each protrusion 220 ) is configured to be able to move forward and backward through the position adjustment means. At this time, it is preferable that the pressure ball 400 is also installed in three places to correspond to the protrusion 220 .

Here, the position adjusting means is formed through three places of the table connection pipe 200 to correspond to each of the protrusions 220 , and a screw hole 240 having a female thread formed therein, and a screw hole from the outside of the table connection pipe 200 . It is fastened to the hole 240 and the end is fixed to the protrusion 220 and is composed of an adjustment bolt 250 that moves the protrusion 220 forward by loosening and tightening. At this time, the method of fixing the end of the adjustment bolt 250 to the protrusion 220 may be fixed by a snap ring method as shown in the drawing, but a conventional hook method or a screw method may be applied.

Then, when the pressure ball 400 is worn or the ball guide inclined portion 222 is worn and the force for the pressure ball 400 to press the leg connecting rod 100 is weakened, the protrusion 220 is adjusted by adjusting the adjustment bolt 250 . By advancing, the pressing force of the pressing ball 400 may be strengthened.

Now, the assembly and operation relationship of the leg support for a folding table according to the present invention configured as described above will be described.

When assembling the present invention, after assembling the lever 700 to the table connection pipe 200 first, the remaining parts may be sequentially assembled. That is, after assembling the slider 300 to which the pressing ball 400 is assembled from the top, the pressing spring 500 is put in, the spring support cap 600 is closed, and the leg connecting rod 100 is inserted into the rod insertion hole 620 . ) through the table connection pipe 200 and insert it into the table connection pipe 200 . Then, the leg connecting rod 100 can be stretched comfortably only by pulling it, but the decreasing can be reduced only by pressing the lever 700 .

To explain this in more detail, if you want to increase the length of the leg connecting rod 100, simply pull the leg connecting rod 100 as shown in FIG. The strength is weakened and the length of the leg connecting rod 100 is easily increased.

However, when trying to push the leg connecting rod 100 into the table connecting pipe 200 in order to reduce the length of the leg connecting rod 100, it is not just pushed in. That is, the pressure spring 500 presses the slider 300 and the pressure ball 400 descends obliquely along the ball guide inclined portion 222 while being pushed into the ball insertion hole 320 to press the leg connecting rod 100 . Because it holds, the leg connecting rod 100 is not pushed in and maintains its state.

In this state, if it is desired to forcibly reduce the length of the leg connecting rod 100 , the length of the leg connecting rod 100 may be reduced while pressing the lever 700 as shown in FIG. 5 . That is, when the pressing piece 720 of the lever 700 is pressed, the support ring 730 pushes the slider 300 upward and the pressure ball 400 is lifted together with the slider 300 while the leg connecting rod 100 is lifted. The force of pressing disappears, and if the leg connecting rod 100 is pushed in this state, the overall length is reduced as it is pushed in.

The leg support according to the present invention operated as described above is installed between the upper plate 10 and the plurality of legs 20 of the folding table, and serves to support the legs 20 so as not to be easily folded in an unfolded state. At this time, the leg connecting rod 100 may be fixedly installed on a part of the leg 20 , and the table connecting pipe 200 may be fixedly installed on a part of the lower surface of the upper plate 10 .

In this way, when the legs 20 are unfolded in a state in which the present invention is installed on the folding table, the length of the leg connecting rods 100 is naturally increased and the legs 20 are helped to unfold. And, after the leg connecting rod 100 is stretched, no matter how much force is applied, the length of the leg connecting rod 100 does not decrease, and thus serves to firmly support the leg 20 .

Of course, when the leg 20 is folded to store the folding table, if the leg 20 is folded while the lever 700 is pressed, the length of the leg connecting rod 100 is naturally reduced and the leg 20 is folded. will keep

As described above, the present invention has been shown and described in relation to specific embodiments, but it is known in the art that various modifications and changes are possible without departing from the spirit and scope of the invention as defined by the claims. When you grow up, anyone will find out easily.

10: table top 20: legs
100: leg connecting rod 200: table connecting pipe
210: hollow 220: protrusion
222: ball guide inclined part 224: slider assembly hole
240: stopper 240: screw hole
250: adjustment bolt 300: slider
310: rod through hole 320: ball insertion hole
400: pressure ball 500: pressure spring
600: spring support cap 610: installation space
620: rod insertion hole 700: lever
710: connecting piece 720: pressing piece
730: support ring

Claims (3)

By being installed between the top plate and the legs of a folding table,
a leg connecting rod having an end fixed to a part of the leg;
The end is fixed to a portion of the bottom surface of the upper plate, and the inside is hollowly formed along the longitudinal direction so that the leg connecting rod is inserted. The upper surface of the protrusion is formed with a ball guide inclined portion that slopes downward from the outside to the inside, and a table connection pipe through which a lever assembly hole is formed to communicate with the inside at a position lower than the protrusion on a portion of the outer surface;
It is assembled to be fitted into the slider assembly hole, and a rod through hole into which the leg connecting rod is inserted is formed through the longitudinal direction, and on the outer surface, the rod through hole communicates with the rod through hole at a predetermined equal interval at a position corresponding to the ball guide inclined portion. A slider through which a ball insertion hole is formed;
a pressing ball inserted into the ball insertion hole of the slider so that the slider is inserted into the slider assembly hole to maintain a hanging state, and pressurizing the leg connecting rod passing through the slider to selectively restrict the movement of the leg connecting rod;
A spring support cap coupled to the upper portion of the table connection pipe, opened downwards inside, to form an installation space communicating with the hollow of the table connection pipe, and a rod insertion hole through which a leg connection rod is inserted into the installation space on the upper surface. class,
a pressure spring installed within the installation space of the spring support cap to elastically press the slider in the downward direction;
It is assembled in the lever assembly hole and installed to perform a seesaw movement up and down, and a connection piece fitted into the lever assembly hole, a pressing piece integrally formed on the outside of the connection piece and exposed to the outside, and the connection piece are integrally formed on the inside of the connection piece to connect a table It is inserted into the inside of the pipe and is located below the slider and has a through-groove opened to one side in the center, and consists of a lever consisting of a support ring formed so that the leg connecting rod can pass through it.
When the table connection pipe, slider, pressure ball, pressure spring, spring support cap, leg connecting rod, and lever are assembled, the pressure spring presses the slider, and the pressure ball descends obliquely along the ball guide slope and is pushed into the ball insertion hole, and the leg connecting rod In this state, when it is installed between the table top and the legs and the overall length is extended to spread the legs, simply pull the leg connecting rod, the pressure ball will be pushed out, and the length of the leg connecting rod will be weakened and the length will decrease. When shortening the overall length to fold the leg, press the lever's pressing piece and the bearing ring pushes the slider upwards so that the pressure ball is lifted together with the slider so that the force pressing the leg connecting rod disappears. A leg support for a folding table, characterized in that it is configured to operate to reduce the length by pushing in.
According to claim 1,
A stopper that protrudes inward to be parallel to the bottom surface of the lever assembly hole to support and support a part of the support ring in order not to interfere with the operation of the leg connecting rod by tilting the support ring of the lever downward. is formed and configured to maintain a horizontal state when the lever is released,
When the lever is placed horizontally with the slider moved to the bottom, a predetermined gap is formed between the lower surface of the slider and the support ring so that the lever does not interfere with the downward movement of the slider. A leg support for a folding table, characterized in that the support ring is configured to lift the slider.
According to claim 1,
The protrusion is divided into three equal parts inside the table connecting pipe and installed separately from the inner surface of the table connecting pipe, and the pressure ball is installed in three places to correspond to the protrusion, and each protrusion moves back and forth through a positioning means. It is configured to be able to
The position adjusting means is formed through three places of the table connection pipe to correspond to each protrusion and is fastened to a screw hole having a female thread formed therein, and the screw hole from the outside of the table connection pipe, and the end is fixed to the protrusion and loosened and tightened. It is composed of an adjustment bolt that moves the protrusion forward by
When the pressure ball is worn or the ball guide inclined portion is worn and the force of the pressure ball to press the leg connecting rod is weakened, the adjustment bolt is adjusted to advance the protrusion to strengthen the pressing force of the pressure ball. .

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