KR20200024029A - Lower supporting structure of access floor panel - Google Patents

Abstract

The present invention relates to a lower support structure of a panel for a dual floor, which drastically reduces manufacturing time and manufacturing costs. The lower support structure of a panel for a dual floor comprises: a base plate; a hollow pipe fixed and installed on the upper surface of the base plate; a leveling adapter inserted into and installed on the upper end of the pipe; a leveling adapter fixing means to fix the position of the leveling adapter; a leveling bolt coupled to the leveling adapter to be vertically moved; a leveling nut coupled to the leveling bolt to fix the leveling bolt with respect to the leveling adapter; a head plate coupled to the upper end of the leveling bolt; and a pad plate coupled to the upper surface of the head plate. The leveling adapter includes: a head unit having a lower surface coming in contact with the upper surface of the pipe and a penetration hole at the center thereof to allow the leveling bolt to be coupled therethrough; and a body unit constructed in a hollow shape to be penetrated by the leveling bolt and manufactured separately from the head unit to be welded on the lower surface of the head unit.

Description

Lower support structure for double floor panels {LOWER SUPPORTING STRUCTURE OF ACCESS FLOOR PANEL}

The present invention relates to a lower support structure of a double floor panel, and more particularly, to a lower support structure of a double floor panel that improves mass productivity and walking stability through improvement of a lower configuration leveling adapter and pad plate. .

In general, a double floor is a structure in which a new floor is formed at a predetermined height from an existing building floor to form a space between the newly formed floor and an existing building floor, and thereby accommodate air conditioning ducts, power lines, or network cables. Means.

At this time, the double floor is composed of a plurality of lower support structures and a plurality of panels installed thereon.

In this regard, as a prior art related to the lower support structure of the double floor panel, Korean Patent Publication No. KR 10-1526880 B1 (Patent Document 1) and the like have been disclosed.

1 to 3, the lower support structure of a conventional double floor panel will be described.

The lower support structure of the conventional double floor panel includes a base plate (1), a hollow pipe (2) fixedly installed on an upper surface of the base plate (1), and an insertion installation on an upper end of the pipe (2). A leveling adapter 3, a leveling adapter fixing means 4 for fixing the position of the leveling adapter 3, a leveling bolt 5 coupled to the leveling adapter 3 so as to be movable upward and downward, and the leveling A leveling nut 6 coupled to the bolt 5 to fix the leveling bolt 5 to the leveling arbor 3, a head plate 7 coupled to an upper end of the leveling bolt 5, and the It comprises a pad plate (8) coupled to the upper surface of the head plate (7).

In this case, the leveling adapter (3) is prepared by carrying out the inner diameter machining, outer diameter machining, thread processing, etc. while changing the various tools using a lathe machine after preparing the steel of the hexagonal pillar shape. That is, the conventional leveling adapter 3 is manufactured by molding one steel material.

In this case, since the leveling adapter 3 takes a relatively long time for a number of machining processes, there is a problem that mass production in a short time is difficult.

On the other hand, the pad plate 8 is interposed between the panel (not shown) and the head plate 7, the panel (not shown) applied to the coupling portion of the head plate 7 and the leveling bolt (5) ) To reduce dynamic loads. At this time, the pad plate 8 has a bent portion 8a which is structurally engaged with the pad plate 8 to prevent the pad plate 8 from being separated from the head plate 7. It is formed to protrude outward.

At this time, the pad plate 8 has a springback phenomenon due to the bent shape of the fitting portion 8a, so that the center portion is convexly floated, thereby hitting the head plate 7 to cause noise.

Korea Patent Publication KR 10-1526880 B1

In solving the above-mentioned problems, an object of the present invention is to manufacture a leveling adapter by manufacturing two upper and lower parts separately and welding them, thereby lowering the production time and manufacturing cost of the lower flooring panel lower support structure. In providing.

In addition, an object of the present invention is to provide a lower support structure of the double floor panel for forming a structure for preventing the separation of the pad plate on the lower surface of the pad plate and the upper surface of the head plate to significantly reduce the spring back phenomenon of the pad plate. have.

The lower support structure of the double floor panel according to an embodiment of the present invention, the base plate, a hollow pipe fixedly installed on the upper surface of the base plate, a leveling adapter inserted into the upper end of the pipe, and the leveling Leveling adapter fixing means for fixing the position of the adapter, a leveling bolt coupled to the leveling adapter so as to be movable up and down, a leveling nut coupled to the leveling bolt to fix the leveling bolt to the leveling arbor, and the leveling bolt It is configured to include a head plate coupled to the top of the, and a pad plate coupled to the top surface of the head plate.

In this case, the leveling adapter may include a head having a lower surface in contact with an upper surface of the pipe and having a through hole through which the leveling bolt is coupled to the center, and a hollow shape through which the leveling bolt is penetrated. It is preferably configured to include a body portion manufactured separately from the portion and welded to the lower surface of the head portion.

At this time, it is preferable that the head portion is manufactured by punching the rolled steel sheet in a predetermined form using a press die, and then processing the through hole in a central portion thereof.

On the other hand, the body portion, it is preferable that the lower end portion having the same outer diameter as the inner diameter of the pipe, and the upper end portion which is continuously formed in the lower end than the inner diameter of the pipe.

In this case, it is preferable that an accommodation groove is formed along at least one of the lower end and the upper end along the outer circumferential surface thereof.

In this case, the leveling adapter fixing means is preferably configured to include a fastening screw which is coupled to the pipe so as to be movable in and out of the pipe and is fastened to the inside of the pipe is accommodated in the receiving groove to pressurize and fix the body portion. Do.

On the other hand, the body portion, after placing the expansion pipe in the pipe expansion die having a cavity of the same shape as the outer shape of the body portion, and inserting the expansion core matching the inner shape of the body portion inside the expansion pipe It is preferable that the inclined pin is manufactured by pressurizing the expansion tube core.

On the other hand, at least one or more alignment grooves are formed on the top surface of the head plate, at least one or more alignment protrusions are formed on the bottom surface of the pad plate, the head plate and the pad in such a way that the alignment groove and the alignment protrusions are coupled It is preferred that the plates are joined.

As described above, the lower support structure of the double floor panel according to the present invention significantly reduces the manufacturing time and manufacturing cost by manufacturing the leveling adapter by welding the two upper and lower parts separately.

In addition, the lower support structure of the double floor panel according to the present invention forms a structure for preventing the separation of the pad plate on the lower surface of the pad plate and the upper surface of the head plate to significantly reduce the spring back phenomenon of the pad plate.

1 is a perspective view illustrating a lower support structure of a conventional double floor panel.
FIG. 2 is an exploded perspective view of the lower support structure of the raised floor panel shown in FIG. 1.
3 is a partial cross-sectional view of the lower support structure of the raised floor panel shown in FIG. 1.
Figure 4 is a perspective view for explaining the lower support structure of the double floor panel according to an embodiment of the present invention.
FIG. 5 is an exploded perspective view of the lower support structure of the raised floor panel shown in FIG. 4.
6 is a partial cross-sectional view of the lower support structure of the raised floor panel shown in FIG. 4.
7 is a view for explaining various forms of the body portion.
8 is a view for explaining a manufacturing method of the body portion.

The accompanying drawings in the present invention may be shown in an exaggerated representation for the purpose of differentiation and clarity from the prior art, and for convenience of technology grasp. In addition, terms to be described later are defined in consideration of functions in the present invention, and may vary according to the intention or custom of a user or an operator, and definitions of these terms should be made based on technical contents throughout the present specification. will be. On the other hand, the embodiments are merely illustrative of the components set forth in the claims of the present invention, and are not intended to limit the scope of the invention, the scope should be interpreted based on the technical spirit throughout the specification of the present invention. .

Figure 4 is a perspective view for explaining the lower support structure of the double floor panel according to an embodiment of the present invention, Figure 5 is an exploded perspective view of the lower support structure of the double floor panel shown in Figure 4, Figure 6 4 is a partial cross-sectional view of the lower support structure of the double floor panel shown in Figure 4, Figure 7 is a view for explaining various forms of the body portion, Figure 8 is a view for explaining the manufacturing method of the body portion.

4 to 8, the lower support structure of the double floor panel according to the embodiment of the present invention includes a base plate 10, a pipe 20, a leveling adapter 30, and a leveling adapter fixing means. 40, a leveling bolt 50, a leveling nut 60, a head plate 70, and a pad plate 80. Basically all configurations are made of metals (eg iron-based steels).

The base plate 10 is configured to be fixed to the ground (that is, the bottom surface is a double floor is installed).

The base plate 10 is provided with an installation hole 10a that can fix the base plate 10 to the ground using a bolt or the like.

The pipe 20 is fixed to the upper surface of the base plate 10, it is made of a hollow form. The leveling adapter 30, the leveling adapter fixing means 40, and the leveling bolt 50, which will be described later, are installed to occupy a space of the inside of the pipe 20 (hollow part).

The leveling adapter 30 is inserted into the top of the pipe 20 is installed.

In this case, the leveling adapter 30 preferably comprises a head portion 31 and a body portion 32.

 The head portion 31 has a lower surface 31a in contact with the upper surface of the pipe 20, and a through hole 31b through which the leveling bolt 50 is coupled through is provided at the center thereof. In more detail, an inner thread 31c which is screwed with an outer thread of the leveling bolt 50 is formed on an inner wall of the through hole 31b.

The head portion 31 is preferably manufactured by punching the rolled steel sheet in a predetermined form using a press die, and then processing the through hole 31b and the thread 31c in the center portion thereof. In this case, the head 31 has an advantage that can be manufactured in various forms by manufacturing a press mold having a variety of cavities. That is, the conventional leveling adapter has to use only one steel in the form of a hexagonal column, so it has no choice but to have a hexagonal head, but in the embodiment of the present invention, the head portion 31 is adjusted by an adjustment tool or manually. It can be produced in various forms that can be operated.

The body part 32 is configured in a hollow shape through which the leveling bolt 50 can pass.

The body part 32 is preferably manufactured separately from the head part 31 and fixedly attached to the lower surface 31a of the head part 31 by a welding method. In this case, the method of manufacturing the leveling adapter 30 by welding the head portion 31 and the body portion 32 separately after manufacturing is compared with the method of processing a single steel of the hexagonal column type. It was confirmed experimentally to significantly reduce the time and manufacturing cost.

On the other hand, the body portion 32 is the lower end portion 32a having an outer diameter equal to the inner diameter of the pipe 20 (wherein the meaning is defined as a concept including a predetermined clearance tolerance), and the lower end portion ( It is preferably configured to include an upper end portion 32b which is continuously formed at 32 and has an outer diameter smaller than the inner diameter of the pipe 20.

Since the outer diameter of the upper end portion 32b is smaller than the inner diameter of the pipe 20, the weld rod 100 generated when the body portion 32 welds to the lower surface 31a of the head portion 31 is By not being caught by the pipe 20 to ensure structural integrity.

In this case, it is preferable that the receiving groove 32c is formed along at least one of the lower end portion 32a and the upper end portion 32b along the outer circumferential surface thereof. The accommodation groove 32c is accommodated in the leveling adapter fixing means 40 is to prevent the departure of the leveling adapter (30). In particular, referring to FIG. 7, the receiving groove 32c is formed to be inclined to the outer circumferential surface of the upper end portion 32b in the form of a long groove as in FIG. 7A, or the lower end 32a as shown in FIG. 7B. ', Different from the shape of FIG. 7 (a), FIG. 32'b may be formed in the shape of a ring groove in the upper end of another shape).

Hereinafter, a manufacturing method of the body portion 32 ′ will be described based on FIGS. 7B and 8.

In detail, the body part 32 'arranges the pipe 300 for expansion in the pipe expansion die 200 having the cavity 200a having the same shape as that of the body part 32'. After inserting the expansion core 400 matching the inner (hollow portion) shape of the body portion 32 'into the expansion pipe 300, pressurizing the expansion core 400 with the inclined pin 500. It is preferable to be prepared in a way to expand.

The leveling adapter fixing means 40 serves to fix the position of the leveling adapter 30.

In this case, the leveling adapter fixing means 40 is coupled to the pipe 20 so as to be movable in and out of the pipe 20, and is accommodated in the receiving groove 32c when tightened to the inside of the pipe 20. It is preferable that it is configured to include a fastening screw 41 for pressing and fixing the body portion (32a). As another example, the leveling adapter fixing means 40 may include a tightening bolt as a kind of tightening screw, and a washer nut interposed between the head of the tightening bolt and the outer surface of the pipe 20.

The leveling bolt 50 is coupled to the leveling adapter 30 so as to be movable up and down.

More specifically, the leveling bolt 50 is coupled to the inner thread 31c formed in the through hole 31b of the head portion 31, the outer thread is moved up and down according to the user's intention to adjust the overall height Make it possible.

The leveling nut 60 is coupled to the leveling bolt 50 to fix the leveling bolt 50 to the leveling attorter 30.

More specifically, the leveling nut 60 is spaced apart from the upper surface of the head portion 31 by a predetermined interval, and when the position of the leveling bolt 50 is determined by the user's adjustment, again the user's adjustment By the pressure contact to the upper surface side of the head portion 31 while the leveling bolt 50 is fixed by fixing the leveling bolt 50.

The head plate 70 is a double floor panel (not shown) on the top, it is coupled to the upper end of the leveling bolt (50).

At least one custom groove 70a is preferably formed on the top surface of the head plate 70.

The pad plate 80 is coupled to an upper surface of the head plate 70, and is interposed between a panel (not shown) and the head plate 70 and the head plate 70 and the leveling bolt 50. It serves to reduce the dynamic load of the panel (not shown) applied to the coupling portion of the).

In this case, at least one alignment protrusion 80a is formed on the bottom surface of the pad plate 80, so that the alignment groove 70a and the alignment protrusion 80a of the head plate 70 are coupled to each other. It is preferable that the head plate 70 and the pad plate 80 are coupled to each other. (In contrast, forming a fitting protrusion in the head plate 70 and forming a fitting groove in the pad plate 80 are also equivalent. It will be referred to as a technical change within the scope.) Through this, in the embodiment of the present invention, a structure for preventing the separation of the pad plate 80 and the alignment protrusion (80a) formed on the lower surface of the pad plate 80 and By replacing with the coupling structure of the alignment groove (70a) formed on the upper surface of the head plate 70, the spring back phenomenon of the conventional pad plate (as described above, the alignment portion in a way to bend the outside as conventionally The problem by forming method) is significantly reduced.

As described above, the lower support structure of the double floor panel according to the present invention by manufacturing the leveling adapter by manufacturing the two upper and lower parts separately and then welding to significantly reduce the manufacturing time and manufacturing cost, the pad plate The springback phenomenon of the pad plate is remarkably reduced by forming structures on the lower surface of the pad plate and the upper surface of the head plate to prevent the separation of the pad plate.

As described above, the present invention has been described with reference to the embodiments shown in the drawings, which are merely exemplary, and various modifications and equivalent other embodiments are possible based on common knowledge in the art. Should understand. Therefore, the true technical protection scope of the present invention by the claims to be described below, should be determined based on the specific content of the invention described above.

FIELD OF THE INVENTION The present invention relates to a lower support structure of a raised floor panel and can be used in the industrial field related to the installation of a raised floor.

10: base plate
10a: mounting hole
20: pipe
30: Leveling Adapter
31: head part
31a:
31b: through hole
31c: thread
32: body part
32a, 32a ': lower part
32b :, 32b ': top
40: leveling adapter fixing means
50: leveling bolt
60: leveling nut
70: head plate
70a: custom groove
80: pad plate
80a: dowel
100: welding rod
200: pipe expansion die
200a: cavity
300: pipe for expansion
400: expansion core
500: inclined pin

Claims (7)

Base plate;
A hollow pipe fixedly installed on an upper surface of the base plate;
A leveling adapter inserted and installed at an upper end of the pipe;
Leveling adapter fixing means for fixing the position of the leveling adapter;
A leveling bolt coupled to the leveling adapter so as to be movable up and down;
A leveling nut coupled to the leveling bolt to secure the leveling bolt to the leveling attorter;
A head plate coupled to the top of the leveling bolt; And
A pad plate coupled to an upper surface of the head plate;
Including,
The leveling adapter,
A head portion having a bottom surface in contact with an upper surface of the pipe and having a through hole through which the leveling bolt is coupled to the center; And
A body part formed of a hollow shape through which the leveling bolt is penetrated and manufactured separately from the head part, and welded to a lower surface of the head part;
The lower support structure of the double floor panel, comprising a.
The method of claim 1, wherein the head portion,
After punching the rolled steel sheet in a predetermined form using a press die, the bottom support structure of the double floor panel, characterized in that the manufacturing method by processing the through hole in the center.
The method of claim 1, wherein the body portion,
A lower end having an outer diameter equal to an inner diameter of the pipe; And
An upper end portion formed continuously at the lower end portion and having an outer diameter smaller than an inner diameter of the pipe;
The lower support structure of the double floor panel, comprising a.
The method of claim 3,
At least one of the lower end and the upper end of the lower support structure of the double floor panel, characterized in that the receiving groove is formed along the outer peripheral surface.
The method of claim 4, wherein the leveling adapter fixing means,
A fastening screw penetrately coupled to the pipe so as to be movable in and out of the pipe, and fastened to the accommodation groove when the screw is screwed into the pipe to pressurize and fix the body part;
The lower support structure of the double floor panel, comprising a.
The method of claim 1, wherein the body portion,
The expansion pipe is placed in a pipe expansion die having a cavity having the same shape as that of the body portion, an expansion tube matching the inner shape of the body portion is inserted into the expansion pipe, and the expansion core is inclined with an inclined pin. The lower support structure of the double floor panel, characterized in that it is manufactured in a way to expand by pressing.
The method of claim 1,
At least one fitting groove is formed on an upper surface of the head plate, and at least one fitting protrusion is formed on a lower surface of the pad plate, such that the head plate and the pad plate are coupled to each other. The lower support structure of the double floor panel, characterized in that coupled.

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