JP3205150U - Free access floor panel base and support device using the same - Google Patents

Abstract

A pedestal for a free access floor panel and a support device capable of improving pull-out strength at low cost. A free access floor pedestal that is mounted on an upper portion of a panel support column erected on the lower floor and supports the upper floor, and has a horizontal screw hole in a mounting cylinder portion 22 that can be inserted at the tip of the panel support column. 30 are provided at two locations on the upper and lower sides, and the panel support column is tightened with two lateral screws 32 which are torque-controlled. [Selection] Figure 1

Description

  The present invention relates to a pedestal for a free access floor panel and a support device using the pedestal, and more particularly to a pedestal with improved pulling strength and a support device using the pedestal.

  In general, the free access floor in the semiconductor manufacturing area has a double floor structure, and as shown in FIG. 6, a panel support 3 is erected between the lower floor 1 and the upper floor 2, and this panel is used. A support device 5 to which a pedestal for free access floor panel (hereinafter referred to as a panel pedestal) 4 for connecting the upper floor 2 to the upper part of the support 3 is attached is provided. As shown in FIGS. 7 to 8, the panel base 4 includes a mounting cylinder portion 6 into which the tip of the panel support 3 can be inserted, and a seat plate 7 that supports corners of the four floor panels 2a. It has a provided structure. Four protrusions 9 are provided on the upper surface of the seat plate 7 to fit into the recesses 8 formed at the lower corners of the floor panel 2a, and the four floor panels 2a are formed at the cross-shaped butting portion between the floor panels 2a. It has a structure that supports. And the horizontal screw 11 is attached to the horizontal screw hole 10 formed in the side surface of the mounting | wearing cylinder part 6 so that the panel base 4 may not rotate on the upper part of the panel support | pillar 3, The panel base is tightened by the horizontal screw 11 4 stops at a predetermined height of the panel support 3 to prevent rotation.

  The conventional support device 5 including the panel support 3 and the panel base 4 on the free access floor of the semiconductor manufacturing area supports the panel base 4 in the recesses 8 formed at the four corners of the panel. A protrusion 9 is fitted in the recess 8 formed in 2 a and fixed by a horizontal screw 11 provided on the panel base 4.

  However, a falling force may act on the semiconductor manufacturing apparatus during a large earthquake, and the floor panel 2 a is pulled upward by the falling force, and a pulling force acts on the panel base 4. The floor panel 2a and the semiconductor manufacturing apparatus are integrated because they are fixed via fixing hardware (not shown), and the floor panel 2a is pulled out of the panel support 3 together with the semiconductor manufacturing apparatus in the event of a large earthquake.

  The current panel pedestal 4 is not considered in terms of pulling force, and is placed on the threaded portion 3a of the panel column 3 so that it does not rotate lightly with the horizontal screw 11 after adjusting the panel top end level. It is only stuck at 0 N · m. Therefore, when the pulling force acts on the floor panel 2a, the panel base 4 is likely to come off from the panel support 3.

To cope with this, the following are known on the free access floor.
(1) Screws are cut inside the panel pedestal, and pulling strength is obtained by screwing with the screws of the panel support.
(2) As shown in FIG. 9, the special plate 12 and the panel 2a fixed to the panel support 3 are screwed with the screw shaft 13 to obtain the pulling strength.
However, with respect to (1), the pedestal is adjusted by 90 ° rotation, which makes it difficult to obtain the panel top end level and increases the cost of threading the pedestal. For (2), a special plate is added, which greatly increases the cost.

  Further, as described in Patent Document 1, a type in which the panel base 4 and the floor panel 2a are fixed with a screw shaft is also known, but in such a method, the panel base 4 is similarly pulled out.

JP 2004-92132 A

  The present invention is intended to solve the problem that the pulling-out resistance between the panel base and the panel column not considering earthquake resistance is extremely small at a low cost. That is, it does not have a complicated additional structure that is connected by the screw shaft 13 through the special plate 12 attached to the panel column and the panel base shown in FIG. 9, and can be mounted by a conventional simple method. An object of the present invention is to provide a pedestal for a free access floor panel that can adopt a structure capable of realizing this at a low cost and a support device using the pedestal.

The panel pedestal and the support device using the same according to the present invention are configured as follows.
First, the panel pedestal of the present invention is a panel pedestal that supports the upper floor and is mounted on the upper part of the panel support erected on the lower floor. Two horizontal screw holes are provided at the top and bottom, and the panel support column can be tightened with two horizontal screws.

  In this case, the torque management of the tightening force by the horizontal screw attached to the horizontal screw hole (4.0 N · m suitable for the constituent members) is performed.

  Further, the support device using the pedestal for free access floor panel according to the present invention is a support device comprising a panel support and a pedestal for free access floor panel attached to the lower floor and the upper floor. And at least 2 combinations of a horizontal screw hole for preventing rotation and a horizontal screw screwed into the horizontal screw hole in the mounting cylinder portion of the base for the free access floor panel mounted on the protruding end of the panel support column. This is characterized in that the torque management of the lateral screw is performed.

  In the present invention, a lateral screw hole is additionally formed and an effect can be obtained only by adding a lateral screw to be screwed into the hole, and sufficient pulling strength can be obtained only by performing torque management. . That is, the side screws attached to the panel base are tightened by torque control, and the base is usually provided with only one horizontal screw, but another one is added to make two. According to this, the fixing method of the panel base can be improved at a low cost, and the pulling strength of the panel base can be improved. Thus, compared with the conventional panel base, the pulling strength is improved, and the pulling strength can be improved at a low cost.

It is the perspective view seen from the lower part of the base for panels concerning embodiment. It is the perspective view seen from the upper part of the base for panels concerning embodiment. It is a top view of the base. It is sectional drawing of the same base. It is a perspective view of the partial breakage state of the support apparatus of the floor panel which attached the base for panels concerning embodiment. It is the front of the support apparatus which supports between the conventional lower floor and an upper floor. It is the perspective view seen from the downward direction of the conventional panel base. It is the perspective view seen from the upper direction of the conventional panel base. It is the support apparatus of the floor panel which concerns on another prior art example.

Hereinafter, specific embodiments of a panel base for a free access floor and a support device using the same according to the present invention will be described in detail with reference to the drawings.
The free access floor panel base (hereinafter referred to as panel base) 20 according to this embodiment is mounted to insert the tip screw portion 3a of the panel support 3 (see FIG. 6) as shown in FIGS. It has a structure in which a cylindrical portion 22 and a seat plate 24 that is provided at one end of the mounting cylindrical portion 22 and supports the floor panel 2a (see FIG. 6) are provided.

  The upper surface of the seat plate 24 is provided with four protrusions 26 that fit into the recesses formed at the lower corners of the floor panel 2a (see FIG. 6). It has a structure that supports the floor panel 2a. Further, a reinforcing bracket 28 is provided on each of the four sides of the lower surface portion of the seat plate 24 to increase the strength.

  On the other hand, the mounting cylinder portion 22 has a hollow cylindrical shape, and a horizontal screw 32 is attached to the horizontal screw hole 30 formed on the side surface of the mounting cylinder portion 22 so that the panel base 20 does not rotate at the top of the support column 3. The panel pedestal 4 is stopped at a predetermined height of the panel support 3 by the tightening of the horizontal screw 32 so that the rotation is stopped. In this embodiment, two horizontal screw holes 30 are provided at different positions on the upper and lower sides, and a horizontal screw 32 can be screwed to each. In addition, in order to form the horizontal screw hole 30, a thick portion 34 is formed along the axial direction on the outer surface portion of the mounting cylinder portion 22 so that a sufficient tightening torque can be obtained.

  Such a panel base 20 is attached to the panel support 3 to form a support device 36. FIG. 5 shows this state. The panel pedestal 20 is inserted into the opening side of the mounting cylinder portion 22 by inserting the tip screw portion 3a of the panel support column 3, and a horizontal screw 32 is mounted in the two-level horizontal screw hole 30 so that it does not rotate lightly. Keep it. A nut 38 is screwed to the tip screw portion 3a in advance, and a set screw 40 is attached to the nut 38, and the set screw 40 prevents rotation.

  In such a support device 36, the protrusions 26 of the seat plate 24 are fitted into the recesses 8 (see FIG. 6) of each floor panel 2a so as to be positioned at the four butting portions of the floor panel 2a. Then, after adjusting the panel top end level, the nut 38 is set to a height that supports the lower edge of the panel base 20. Here, the set screw 40 attached to the nut 38 is turned to adjust the level of the panel base 20. Then, the two horizontal screws 32, 32 of the panel pedestal 20 are screwed toward the respective horizontal screw holes 30 so as to obtain a constant torque value, for example, 4.0 N · m suitable for the constituent members. Torque management with.

  Thus, the pulling strength from the panel support 3 of the panel base 20 is increased by performing torque management of the horizontal screw 32 that is not normally managed. According to the experiment, the number of the horizontal screws 32 of the panel base 20 was increased from the normal one to two, so that the pullout strength of the panel base 20 was further increased compared to the case of one. An excellent improvement is that the pull-out strength can be increased without adding a horizontal screw 32 and torque management, and without a significant cost increase.

  It was confirmed that the improved pedestal itself was broken before the panel pedestal 20 was pulled out of the panel support 3 by the panel pedestal 20 and the support device 36 using the same according to the present embodiment (see FIG. 5 and the lower part). See table).

なお、本実施形態では、座板２４に突起２６をつけた構造について説明したが、この突起２６は必ずしも必要ではない。 Assuming that the aluminum pedestal is 1, the result is that the torque management for one screw is about three times and the torque management for two screws is about nine times.

In the present embodiment, the structure in which the protrusion 26 is provided on the seat plate 24 has been described. However, the protrusion 26 is not necessarily required.

1 ... Lower floor, 2 ... Upper floor, 2a ... Floor panel, 3 ... Panel support, 4 ... (Free access floor) Panel base, 5 ... Supporting device, 6 ... Mounting tube, 7 ... Seat plate, 8 ... Recess, 9 ... Protrusion, 10 ... Side screw hole, 11 ... Side screw, 12 ... Special plate, 13 ... Screw shaft, 20 ... Panel base, 22 ...... Mounting cylinder, 24 …… Seat plate, 26 …… Protrusion, 28 …… Bracket, 30 …… Horizontal screw hole, 32 …… Horizontal screw, 34 …… Thick part, 36 …… Supporting device, 38… ... Nut, 40 ... Set screw.

Claims (3)

It is a base for a free access floor panel that is mounted on the upper part of a panel support column erected on the lower floor and supports the upper floor,
Free access floor panel pedestal characterized in that it has two horizontal screw holes on the mounting cylinder that can be inserted at the tip of the panel support, and two panel screws can be used to tighten the panel support. .   The pedestal for a free access floor panel according to claim 1, wherein torque management of tightening force by a horizontal screw attached to the horizontal screw hole is performed. A support device comprising a panel support between a lower floor and an upper floor and a base for a free access floor panel attached to the floor,
At least two combinations of a horizontal screw hole for preventing rotation and a horizontal screw screwed into the horizontal screw hole in the mounting cylinder portion of the pedestal for free access floor panel mounted on the protruding end of the panel support column A support device is provided, wherein torque management of the lateral screw is performed.

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