KR101802844B1 - locking apparatus of leg for table frame - Google Patents

Abstract

The present invention relates to a leg fixation device for a table frame, to fixate a leg member of the table frame wherein a rotation restriction bolt penetrating a support hole formed on both sides of a penetration part formed in a lower part of a body of an end member, which is fixated in both ends of an upper support member to restrict rotation of a leg member, and a curve guide hole formed on one side of an upper part of the leg member is fastened. According to the present invention, the leg fixation device comprises: a rotary pressing member having a grip part formed in a center, having a first inclined surface formed in an end part, and wherein the rotation restriction bolt is fastened in both ends; and a tightening member integrally installed along an edge of the support hole formed in the body of the end member to form a second inclined surface corresponding to the first inclined surface on a surface. Accordingly, when a handle part of a rotary pressing member coupled to the rotation restriction bolt to restrict rotation of the leg member is rotated, the end member presses the leg member as the tightening member fixated in the end member and the inclined surface are entangled or matched, so as to prevent the leg member from being moved or rotated; thereby allowing a user to use a table in a stable state.

Description

[0001] The present invention relates to a locking apparatus for a table frame,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a leg fixing device for a table frame, and more particularly, to a table fixing device for a table frame which can firmly fix a leg so as to prevent a leg from shaking or pivoting, To a leg fixing device for a frame.

Generally, folding tables are widely used for the convenience of storage in a space such as a meeting room, a church, etc. of schools, academies, and corporations that many people use jointly.

Such a folding table is provided with a table leg supporting the top plate, and the table leg is mounted so as to be able to fold or unfold into a frame fixing the top plate.

Such a folding table is provided so as to be folded into a frame so as to be housed inside the frame. When folded, the folded legs are folded in a stable state without being exposed to the outside, so that a plurality of tables can be stably stacked and stored.

An example of such a folding table is proposed in the registration utility model 20-0469344. The present invention relates to a foldable table leg having a safety guide, comprising: a mounting frame coupled to a bottom surface of the table and corresponding to each other; A leg support bar hingedly connected to the mounting frame and the hinge bracket and having guide protrusions protruding from the outer surface thereof and corresponding to each other; A connection link having a guide hole formed on the inner surface thereof and having an engagement portion for connecting the installation frame and the leg support bar and guided by the guide protrusion of the leg support bar inserted therein and hooking the guide protrusion; And the guide protrusion of the leg supporting bar, which is guided by the guide hole and is guided through the guide hole, is temporarily stopped so that the leg supporting bar is temporarily stopped, And a safety guide for preventing collapse at one time is further provided.

However, the above-mentioned registration utility model has a structure in which the leg supporting bar is prevented from being arbitrarily folded until the leg supporting bar is fully extended outwardly of the table and then the guide protrusion is hooked on the engaging portion formed in the guide hole of the connecting link Even if a slight external force is applied to the leg support bar or the link link, the guide protrusion can be easily detached from the engaging portion formed in the guide hole of the link.

Therefore, since the leg support bar of the registered resignation design is in a state in which the leg support bar is unfolded, the guide protrusion is simply straddled in the engaging portion formed in the guide hole of the connection link, so that the leg support bar is weak and unstable, There is an insecure structural defect when the article is placed on the table top, and it is troublesome to visually confirm whether or not the guide protrusion is caught in the hook formed in the guide hole of the connecting link.

In addition, since the guide protrusion is simply extended over the engaging portion formed in the guide hole of the connecting link at the time of using for a long time, the leg supporting bar is weak and the stability of the table is also low.

Accordingly, it is an object of the present invention to provide a table capable of improving the stability of a table by preventing the leg members from being shaken or folded by firmly fixing the leg members in a state in which the leg members of the table frame are extended, An object of the present invention is to provide a leg fixing device for a frame.

Another object of the present invention is to provide a leg fixing device for a table frame which is simple in structure while easily fixing and releasing the leg members.

In order to solve such a technical problem,

A support hole formed at both sides of a through-hole formed in a lower portion of the body of the tailgate member fixed to both ends of the upper plate support member so as to restrict rotation of the leg member, and a rotation restricting bolt Wherein the leg fixing device has a knob at the center, a rotation pressing member in which the rotation restricting bolt is coupled to both ends of the leg fixing device, and a first inclined surface is formed at an end of the leg fixing device, And a tightening member integrally formed along the edge of the support hole formed in the body of the tailoring member and having a second inclined surface corresponding to the first inclined surface formed on the surface thereof. do.

The leg fixing apparatus for a table frame according to the present invention is characterized in that when the handle of the pivoting pressing member which is engaged with the pivoting restricting bolt for restricting the rotation of the leg member is rotated, the contact member fixed to the pivoting member and the inclined face are staggered or coincident with each other, The member presses the leg member to prevent the leg member from being shaken or pivoted, so that the table can be used in a stable state.

Further, the leg fixing device of the present invention can easily fix and release the leg member by a simple operation of holding the pivotal pressing member by hand and pivoting in one direction or the other direction, so that it is easy to use, and the structure is simple, There is also an advantage.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an overall perspective view of a table frame provided with a leg fixing device according to the present invention; FIG.
2 is an exploded perspective view of a leg fixing device for a table frame according to the present invention.
FIG. 3 is a cross-sectional view illustrating a released state of the leg fixing device according to the present invention.
4 is an exploded perspective view showing the leg-releasing state of the leg-fixing device according to the present invention.
FIG. 5 is a plan view of a leg fixing device according to the present invention. FIG.
6 is an exploded perspective view showing a leg fixing state of the leg fixing device according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments. It is to be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but on the contrary, is intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

1 to 6, a leg fixing apparatus 100 for a table frame according to the present invention comprises a top plate supporting member 10 of a table frame 1 supporting a bottom surface of an upper plate (not shown) So that the leg members 30 are prevented from being shaken or folded.

First of all, the table frame 1 is formed by folding a leg member 30 on both sides of an upper plate supporting member 10 fixedly attached to a bottom surface of an upper plate. An upper end supporting member 10 fixedly attached to the upper surface of the upper plate supporting member 10 and a fixing member 20 fixed to both ends of the upper plate supporting member 10 and an end fixed to the upper fixing member 20 by a hinge pin 40 And a leg member 30 rotatably provided.

More specifically, the upper plate supporting member 10 includes two horizontal pipes 11 arranged at regular intervals, and vertically fixed between the horizontal pipes 11 by welding or the like. And a pipe 12. At this time, the upper plate is coupled and fixed to the upper portion of the horizontal pipe 11 by a fastening means such as a bolt.

The leg portions 30 are hinged to the upper ends of the leg members 30 to which the legs 32 are connected at both ends of the connecting portion 31. [ That is, the swash plate 20 is fixed to both ends of two horizontal pipes 11 constituting the upper plate supporting member 10, so that two swash plate members 20 are fixed to one end of the upper plate supporting member 10 And two end members 20 of the same shape are fixed to the other end of the upper plate supporting member 10. [

The fixed member 20 is formed with a fixing part 22 to which an end of the horizontal pipe 11 constituting the upper plate supporting member 10 is fixedly coupled to one side of the body 21, A penetrating portion 23 is formed at a lower portion of the upper support member 10 so that an upper end portion of the leg member 30 is inserted and the leg member 30 is attached to the lower side surface of the body 21, The hinge pin 40 penetrating through the upper portion of the leg member 30 is pierced.

That is, a first hinge hole 24 and a support hole 25 are formed on both sides of the through-hole 23 formed in the lower portion of the body 21 of the tailgate 20, A second hinge hole 34 corresponding to the first hinge hole 24 and a curved guide hole 35 are formed at one side of the upper portion of the leg 31 and spaced apart from the second hinge hole 34 at regular intervals .

The hinge pin 40 is fixedly inserted into the first and second hinge holes 24 and 34 so that the leg member 30 can be pivoted and pivoted to the support hole 25 and the curved guide hole 35 The limiting bolt 50 is penetrated so that the leg member 30 can be limitedly extended vertically from the lower portion of the upper plate supporting member 10. [

The curved guide hole 35 is spaced apart from the first hinge hole 24 by a distance equal to the distance between the first hinge hole 24 and the support hole 25 and about the second hinge hole 34, Is formed on one side of the upper portion of the leg member (30). In particular, the curved guide hole 35 is formed by 90 degrees in the lateral direction from the lower side with respect to the second hinge hole 34 so that the leg member 30 is folded tightly to the lower portion of the upper plate support member 10 or is vertically erected .

Meanwhile, the legged member 20 is provided with a leg fixing device 100 for fixing a position of the leg member 30 in a spread state.

The leg fixing device 100 includes a pivoting pressing member 110 having a handle 111 at its center and having both ends thereof coupled with the rotation restricting bolt 50 and having a first inclined surface 113 formed at an end thereof, And a second inclined surface 123 corresponding to the first inclined surface 113 is integrally formed along the edge of the support hole 25 formed in the body 21 of the tailgate 20, (120).

More specifically, the pivotal pressing member 110 is provided at both ends of the ┗ ┛ shaped handle 111 in the direction of the support hole 25 formed in the body 21 of the tailgate 20, And a coupling hole 115 is formed at the center of the end of the pressing portion 112. The coupling hole 115 is formed in the inner circumferential surface of the threaded portion of the end portion of the rotation limiting bolt 50, 112 is formed with a first inclined surface 113 at an end thereof.

At this time, the first inclined surface 113 is formed with a first guiding groove 113a so as to cross the center of the end surface of the pressing portion 112, and the first guiding groove 113a is formed continuously on both sides of the first guiding groove 113a, And the protrusion 113b is protruded.

A through hole 125 is formed at the center of the contact member 120 and a second inclined surface 123 corresponding to the first inclined surface 113 is formed on the surface of the contact member 120. The second inclined surface 123 is formed at the center A second guide protrusion 123a is formed to protrude from the first guide protrusion 123a and a second guide groove 123b is formed on both sides of the second guide protrusion 123a. The contact member 120 is integrally fixed to the body 21 of the tailgate 20 by welding or the like.

Of course, the first inclined surface 113 formed at the end of the pressing portion 112 of the pivoting pressing member 110 and the second inclined surface 123 formed at the surface of the contact member 120 may have various shapes .

The rotation restricting bolt 50 passes through the spacer 130 provided between the curved guide holes 35 formed at one side of the upper portion of the leg member 30 and presses the pressing portion 112 of the pivoting pressing member 110 And is fastened to the coupling hole 115 formed at the end of the coupling hole.

The through holes 131 are formed in the longitudinal direction of the spacer 130 so that the rotation restricting bolts 50 pass therethrough and the washer 132 is integrally fixed to both ends of the spacer 130, And prevents the wear of the leg member 30 due to the operation of the leg fixing device 100 described later.

Hereinafter, the process of releasing and fixing the leg using the leg fixing apparatus for a table frame according to the present invention will be described in detail with reference to FIGS. 1 to 6. FIG.

The first inclined surface 113 formed at the end of the pressing portion 112 is rotated by the first inclined surface 113 of the urging member 120 The both side surfaces of the leg member 30 are loosely adhered to the second inclined surface 123 formed on the surface so that the side surface of the leg member 30 does not come in close contact with the inner peripheral surface of the penetration portion 23 of the body 21 So that the leg member 30 can freely rotate about the hinge pin 40. Therefore, it is useful when the leg member 30 of the table frame 1 is folded and stored.

On the other hand, in a state in which the leg member 30 is extended with the hinge pin 40 as a center, the pressing force applied to both ends of the body 21 of the tailoring member 20 is released, And therefore it is unstable, so the following bridge fixation process is necessary.

Accordingly, when the handle 111 of the pivotal pressing member 110 of the leg fixing device 100 is rotated in the other direction by a predetermined angle (for example, 90 degrees), the pressing portion 112 also rotates, The inclined surface 113 is formed in the surface of the pressing member 120 so that the direction of the second inclined surface 123 is staggered and warped and the pressing portion 112 strongly presses the surface of the pressing member 120, The bolt 50 is pulled so that both sides of the penetration portion 23 of the swing member 20 strongly press the upper outer surface of the leg member 30 so that the leg member 30 is pivoted about the hinge pin 40 You will not be able to hold it. That is, the head portion 51 of the rotation restricting bolt 50 and the pressing member 120 are pressed against both sides of the penetration portion 23 of the iron core member 20 to come in close contact with the outer surface of the upper portion of the leg member 30, It is possible to prevent the member 30 from being shaken or pivoted, so that a stable leg-fixing state can be maintained.

When the leg member 30 is folded again, the grip portion 111 of the pivotal pressing member 110 is rotated by a predetermined angle (for example, 90 degrees) in the other direction, so that the first inclined surface 113 The pressing force of the head 51 of the rotation restricting bolt 50 and the urging member 120 is released by abutting on the second inclined surface 123 formed on the surface of the pressing member 120, Can rotate naturally about the hinge pin (40), so that the leg member (30) can be turned and folded inward.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary,

1: table frame 10: upper plate supporting member
20: iron core member 23:
24: first hinge hole 25: support hole
30: leg member 34: second hinge ball
35: Curved guide hole 40: Hinge pin
50: rotation restricting bolt 100: leg fixing device
110: pivotal pressing member 111: handle portion
113: first inclined surface 120: tight contact member
123: second inclined surface 130: spacer

Claims (5)

A support hole 25 formed at both sides of the penetration portion 23 formed in the lower portion of the body 21 of the tailgate member 20 fixed to both ends of the upper plate support member 10 so as to restrict the rotation of the leg member 30, A leg fixing device 100 for fixing a leg member 30 of a table frame 1 to which a rotation restricting bolt 50 passing through a curved guide hole 35 formed at one side of an upper side of the leg member 30 is fastened ),
The leg fixing device 100 includes a pivoting pressing member 110 having a handle 111 at the center and having both ends thereof coupled with the rotation limiting bolt 50 and a first inclined surface 113 formed at an end thereof, And a second inclined surface 123 corresponding to the first inclined surface 113 is integrally formed along the edge of the support hole 25 formed in the body 21 of the swaging member 20, 120). ≪ / RTI >
The method according to claim 1,
The pivoting pressing member 110 is formed with pushing portions 112 at both ends of the ┗ 의 shaped handle 111 in the direction of the support holes 25 formed in the body 21 of the swaging member 20, A coupling hole 115 is formed at the center of the end of the pressing portion 112 to integrally join the end of the rotation limiting bolt 50. A first inclined surface 113 is formed at the end of the pressing portion 112 Lt; / RTI &
A through hole 125 is formed at the center of the contact member 120 and a second inclined surface 123 corresponding to the first inclined surface 113 is formed on the surface of the contact member 120. The second inclined surface 123 has a center And a second guide groove (123b) is formed continuously on both sides of the second guide protrusion (123a) so that the second guide protrusion (123a) protrudes from the second guide protrusion (123a).
3. The method of claim 2,
The first inclined surface 113 has a first guiding groove 113a formed so as to cross the center of the end surface of the pressing portion 112 and a first guiding projection 113a continuous to both sides of the first guiding groove 113a 113b are protruded from the bottom surface of the leg frame.
The method according to claim 1,
The rotation restricting bolt 50 passes through the spacer 130 provided between the curved guide holes 35 formed at one side of the upper portion of the leg member 30 and presses the pressing portion 112 of the pivoting pressing member 110 Is fastened to a coupling hole (115) formed at an end of the leg fastening device.
5. The method of claim 4,
Wherein the spacer 130 is formed with a through hole 131 in the longitudinal direction so that the rotation restricting bolt 50 is passed therethrough and the washer 132 is integrally fixed to both ends of the spacer 130. [ .

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