JP4990328B2 - Free access floor support structure - Google Patents

Description

The present invention relates to a support structure of the formed raised floor in combination-free access floor construction material.

  Conventionally, free access floors have been used for offices and medical / welfare facilities. Such a free access floor is a floor in which free access floor components are arranged side by side on a structural floor (building floor), and can easily accommodate power wiring, communication wiring, equipment, and the like. It is a floor (double floor structure) having a function that can be performed.

  Conventionally, as a free access floor constituent material, a synthetic resin free access floor constituent material including a panel portion that forms a floor surface on an upper surface and a plurality of support portions that support the panel portion is known. In such a free access floor constituting material, at least a part of the panel portion is constituted by a lattice portion in which a plurality of plate-like members are arranged in a lattice shape (for example, Patent Documents 1 and 2).

  Here, an opening is inevitably formed between the plate-like members of the lattice portion. And in the said opening part, while being open | released in the lower end side, it is open | released or obstruct | occluded in the upper end side. It should be noted that the opening is closed on the upper end side in order to prevent the pin heel or the like from being fitted into the opening or to stably attach the sheet material to the upper surface. This is for forming and securing an area for applying the adhesive.

JP 2002-294991 A JP 2008-280767 A

  In such a free-access floor component, when a load is applied to the panel portion from above, the panel portion is deformed so that the upper surface is concave and curved. Then, the free access floor constituent material is separated from the lower end portions of the plate-like members in the deformed panel portion and the lower end portions of the column portions supporting the deformed panel portion (to be in a C shape). To deform).

  Thereby, a crack and a crack may arise in the site | part etc. which plate-shaped members have connected. When cracks or cracks occur in the free access floor constituent material, the amount of deformation of the free access floor constituent material increases when a load is applied, which makes the floor unstable.

Accordingly, the present invention has been made in view of such circumstances, and an object thereof is to provide a support structure for-free access floor that can be improved load carrying capacity.

A support structure of a free access floor according to the present invention includes a free access floor constituent material having a panel portion that forms a floor surface on an upper surface, and a support member that supports the panel portion , and the panel portion includes a plate-like member latticed. provided on at least a part of the grating portion are arranged in a Jo, raised floor construction material is provided with a connecting portion connecting the lower ends of the plate-shaped member, and a plurality of struts for supporting the panel, connecting The portion is arranged so as to connect the column portions to the lattice portion arranged across the plurality of column portions, and the lower surface is formed in a planar shape, and the support member has the upper surface on the lower surface of the connection portion. A support structure for a free access floor, comprising: a support tool main body supported by: and a pivoting part pivotally attached to the coupling part so as to be rotatable along a lower surface of the coupling part, wherein the coupling part is a pivoting part With a mounting hole, The support device includes an insertion portion that protrudes upward and is inserted into the attachment hole, and the support device is elastically deformed so that the upper surface of the support device body contacts the lower surface of the connection portion. the an elastic portion which relatively displaced in the vertical direction, characterized in Rukoto.

According to the support structure for a free access floor according to the present invention, since the connecting portion connects the lower ends of the plate-like members, when a load is applied to the panel portion from above, the lower ends of the plate-like members are Separation can be suppressed, and as a result, generation of cracks and cracks can be suppressed.

Moreover, the support structure of the free access floor according to the present invention includes a plurality of support portions that support the panel portion, and the connecting portion connects the support portions to each other with respect to the lattice portion disposed across the plurality of support portions. It is arranged to be connected.

According to such a configuration, with respect to the grating portion arranged over a plurality of struts, since the connecting portion is arranged so as to connect the struts together, the load from above the panel section has been added In that case, it can suppress that the lower end parts of a plate-shaped member separate, and it can also suppress that a support | pillar part separates. Therefore, the load bearing performance can be further improved.

Moreover, the support structure of the free access floor according to the present invention is a support structure of the free access floor including the above-described free access floor constituent material and a support member that supports the panel portion, and the connecting portion has a flat bottom surface. The support is pivotally attached to the free access floor component so as to be rotatable along the lower surface of the connecting portion . According to the support structure of the free access floor having such a configuration, since the support tool that supports the panel portion is pivotally attached to the free access floor constituting material, the support tool is formed along the lower surface of the connecting portion formed in a planar shape. Can rotate. Therefore, since the site | part which a support tool supports a free access floor structural material can be adjusted freely, it can respond | correspond flexibly according to the applied load.

In the support structure for a free access floor according to the present invention, the elastic portion may be formed in a plate shape curved downward and may connect the support body and the pivot portion. Further, in the support structure for the free access floor according to the present invention, the pivot attachment portion includes a base portion that can lock the lower surface of the connecting portion on the upper surface, and the insertion portion protrudes upward from the base portion, and the upper surface of the base portion. May be located below the upper surface of the support body in a state where the elastic portion is restored.

As described above, according to the free access flow A support structure according to the present invention, when a load from above was added to the panel, since the lower ends of the plate-like member can be prevented from moving away, cracking Ya It is possible to suppress the occurrence of cracking, and as a result, an excellent effect is achieved that the load bearing performance can be improved.

It is a general view of the support structure of the free access floor which concerns on one Embodiment of this invention, (a) is a downward perspective view, (b) shows a bottom view. It is a general view of the free access floor constituent material concerning the embodiment, (a) is an upper perspective view and (b) shows a lower perspective view. It is a general view of the free access floor constituent material concerning the embodiment, (a) is a top view and (b) shows a bottom view. It is a general view of the free access floor constituent material which concerns on the embodiment, (a) is a front view, (b) shows a rear view. It is a general view of the free access floor structural material which concerns on the embodiment, (a) is a right view, (b) shows a left view. FIG. 4 is an overall view of the free access floor constituent material according to the embodiment, and shows an enlarged cross-sectional view taken along line AA of FIG. 3. It is a general view of the free access floor constituent material which concerns on the embodiment, (a) is an expanded sectional view in the BB line of FIG. 3, (b) shows the expanded sectional view in the CC line. It is a general view of the support tool which concerns on the embodiment, Comprising: (a) is an upper perspective view, (b) shows a lower perspective view. It is a whole figure of the support tool concerning the embodiment, (a) is a top view, (b) is a bottom view, (c) is a front view, (d) shows a sectional view in a DD line. It is a figure explaining the support structure of the free access floor which concerns on the same embodiment, Comprising: (a) is the whole bottom view of the state in which the free access floor structural material was cut | disconnected, (b) is in the AA line of FIG. The principal part expanded sectional view is shown.

  Hereinafter, an embodiment of a free access floor constituent material and a free access floor support structure according to the present invention will be described with reference to FIGS.

  As shown in FIGS. 1 to 10, the free access floor support structure according to the present embodiment is also referred to as a free access floor constituent material (also referred to as “unit floor”). 1) and a plurality (four in FIG. 1) of support members (also called “auxiliary legs”) 2,... For supporting the component 1 from below. In FIG. 1, only one component 1 is shown, but in practice, a plurality of component materials 1,... Is configured.

  The component 1 includes a panel portion 11 that forms the floor surface of the free access floor on the upper surface, and a plurality (nine in this embodiment) of column portions (column elements) 12 that support the panel portion (panel elements) 11. … And. And since the component 1 is formed integrally with the panel part 11 and each support | pillar part 12, the construction method of the free access floor of this embodiment is called a support | pillar fixed type among the support | pillar integral type of a panel construction method. It is a construction method.

  Further, the component 1 includes a plurality of ribs 13,... That connect the panel portion 11 and the column portions 12. The component 1 is made of a synthetic resin such as polypropylene (PP), polyvinyl chloride (PVC), polyethylene terephthalate (PET), polycarbonate (PC).

  The panel unit 11 includes a lattice unit 111 in which a plurality of plate-like members 111a,. Moreover, the panel part 11 is provided with the some connection part 112 ... which connects the lower end parts of plate-shaped member 111a, ....

  In addition, the panel portion 11 is formed in a rectangular shape, and in order to prevent displacement with the adjacent component 1, the convex engagement portions 113,... That engage with the adjacent component 1. .. Are provided on each side (each side of the four sides). Furthermore, the panel part 11 is equipped with the recessed part 115 for taking out the electric wire etc. which were arrange | positioned below upwards to two sides (two sides of four sides) two each.

  In the lattice portion 111, openings 111b,... Are formed between the plate-like members 111a,... In the vertical direction, but the upper ends of some of the openings 111b,. A continuous surface 111 c that is continuously connected is formed on the upper surface of the panel portion 11. Moreover, the lattice part 111 is arrange | positioned over several support | pillar parts 12, .... Specifically, the lattice unit 111 is disposed over substantially the entire area of the panel unit 11.

  Each plate-like member 111a stands in the up-down direction and extends along the horizontal direction (a direction perpendicular to the up-down direction). Specifically, each plate-like member 111a is formed in a flat plate shape. The plurality of plate-like members 111a,... Intersect each other at right angles or at an inclination.

  Each opening 111b is formed in a polygonal shape because the plate-like members 111a,. In addition, the openings 111b,... Include one whose lower end is closed by the connecting portion 112 and one that penetrates in the vertical direction (through hole).

  The continuous surface 111c is disposed along the outer peripheral portion of the panel portion 11 formed in a rectangular shape, and is disposed from one end portion to the other end portion along the center in each width direction. Specifically, the continuous surface 111c is arranged in a substantially “field” shape. In addition, the continuous surface 111c has an area to which the adhesive is applied in order to prevent the pin heel or the like from fitting into the opening 111b of the panel unit 11 or to stably adhere the sheet material to the upper surface of the panel unit 11. While it is provided for the purpose of securing, it also has a function of improving load bearing performance.

  Each connection part 112 is formed in a rectangular shape, and is disposed between the four support pillars 12. Specifically, each connection part 112 is arrange | positioned so that the four support | pillar parts 12, ... may be connected. Each connecting portion 112 has a flat bottom surface. Specifically, each connecting portion 112 is formed in a flat plate shape, arranged along the horizontal direction, and connected to the lower end portion of each plate-like member 111a on the upper surface.

  Moreover, the connection part 112 is provided with two or more attachment holes 112a for attaching the support tool 2 so that rotation is possible. Further, the connecting portion 112 includes a plurality of locking portions 112b,... For locking the support device 2 in order to prevent the support device 2 from rotating by a predetermined angle or more.

  Each attachment hole 112 a is a hole for being inserted into the support 2. And each attachment hole 112a is each arrange | positioned in the corner | angular part of each connection part 112 formed in a rectangular shape, ie, the vicinity of the support | pillar part 12, .... Thereby, while being able to arrange | position the support tool 2 flexibly, compared with the case where it arrange | positions in the center part of the connection part 112, the fall of the load bearing performance by providing the attachment hole 112a can be suppressed. By the way, the opening part 111b of the position in which each attachment hole 112a is provided becomes what penetrates through the up-down direction via the attachment hole 112a (through-hole).

  Each locking portion 112b is a protrusion that protrudes downward. And each latching | locking part 112b is arrange | positioned between the support | pillar part 12 and the attachment hole 112a. In addition, when each of the locking portions 112b is installed on the component floor X, the support member 2 is provided to prevent the component member 1 from being tilted by the rib 13 being lifted onto the support member 2. It is prevented from rotating to the bottom of the rib 13.

  Each support column 12 is formed to project downward from the panel unit 11 and is formed in a rectangular tube shape with the lower side open. Thereby, the opening part 111b of the position in which each support | pillar part 12 is provided becomes what penetrated through the up-down direction (through-hole). Further, the plurality of support columns 12,... Are arranged in a rectangular array. Specifically, the plurality of support columns 12,... Are arranged at both ends and the center of each side (four sides) with respect to the rectangular panel unit 11, and the diagonal lines intersect with each other. One is placed on the site.

  The component 1 is manufactured by injection molding (and / or mold molding) using a mold composed of a pair of mold pieces that are vertically contacted and separated, so that a continuous surface 111c is formed on the upper end side. In the case where the connecting portion 112 is not formed on the lower end side of the opening 111b, the connecting portion 112 is formed on the lower end side of the opening 11b. The continuous surface 111c is not formed. Moreover, the lattice part 111 and the connection part 112 are integrally formed.

  Each support tool 2 is attached to the component 1 so as to be rotatable along the support tool main body 21 supporting the panel part 11 from below and the lower surface of the connecting part 112 (in the direction of the double arrow in FIG. 1B). And a pivot attachment portion 22 that is pivotally attached. Moreover, each support tool 2 is provided with the elastic part 23 which connects the support tool main body 21 and the pivot attachment part 22, and is elastically deformed by being urged | biased.

  The support tool main body 21 is formed in a cylindrical shape, and is closed at the top and opened at the bottom. And the support tool main body 21 supports the structural material 1 by the upper surface formed in planar shape contact | abutting with the panel part 11 (connection part 112). Moreover, the support tool main body 21 includes projecting portions 211,... Projecting inward in the radial direction and extending in the vertical direction on the inner peripheral portion. Furthermore, the support main body 21 includes a recess 212 on the front side (outside) of the upper surface portion, and accordingly, a projection 213 is formed on the back side (inside) of the upper surface portion.

  The pivot portion 22 includes a base portion 221 that is fixed to the support body 21 via the elastic portion 23. In addition, the pivot portion 22 includes an insertion portion 222 that protrudes upward from the base portion 221 and is inserted into the attachment hole 112 a of the connection portion 112.

  The base portion 221 is formed larger than the mounting hole 112a so as to prevent the insertion portion 222 from being inserted into the mounting hole 112a by a predetermined amount or more by locking the mounting hole 112a. Further, the base 221 is positioned below the upper surface of the support tool body 21 in a state where the support tool 2 is not biased, that is, in a state where the elastic part 23 is not elastically deformed.

  The insertion portion 222 is formed in a cylindrical shape so as to be elastically deformed while being formed in a tapered shape in order to facilitate insertion into the mounting hole 112a. The insertion portion 222 is formed in a stepped shape on the base end side so as to prevent the insertion portion 222 from coming out of the attachment hole 112a after being inserted into the attachment hole 112a.

  The elastic part 23 is formed in a plate shape curved downward. The elastic portion 23 has one end connected to the upper side of the support body 21 and the other end connected to the base 221 of the pivoting portion 22. Thereby, the elastic part 23 can be displaced relatively in the up-down direction by elastically deforming by being biased.

  From the above, the free access floor constituting material 1 according to the present embodiment connects the lower ends of the plate-like members 111a,... To each connecting portion 112, and therefore when a load is applied to the panel portion 11 from above, It can suppress that the lower end parts of plate-shaped member 111a and ... separate. Therefore, since it can suppress that a crack and a crack arise, load bearing performance can be improved.

  Further, since the load bearing performance is improved by providing the connecting portion 112, for example, if the same load bearing performance as that when the connecting portion 112 is not provided is maintained, the thickness of the plate-like member 111a is reduced. Or the number of plate-like members 111a can be reduced. Therefore, by efficiently designing, it is possible to reduce the amount of raw material used for manufacturing the free access floor constituting material 1.

  In addition, the free access floor constituting material 1 according to the present embodiment is configured such that the connecting portion 112 connects the strut portions 12 to each other with respect to the lattice portion 111 arranged over the plurality of strut portions 12. Therefore, when a load is applied to the panel portion 11 from above, it is possible to suppress the lower end portions of the plate-like members 111a,. it can. Therefore, the load bearing performance can be further improved.

  Moreover, the support structure of the free access floor according to the present embodiment is such that the support 2 supporting the panel unit 11 is pivotally attached to the free access floor constituting material 1, so The support tool 2 can be rotated along. Therefore, since the site | part which the support tool 2 supports the panel part 11 (connection part 112) can be adjusted freely, according to the load applied, it can respond flexibly.

  Here, among the components 1 arranged side by side, the components 1 arranged on the end side of the floor may be cut due to the space of the floor. When the component 1 is cut, in most cases, the support by the support columns 12 and 12 is not sufficient. Therefore, as shown in FIG. 10 (a), by rotating the support tools 2,..., The support tools 2,.

  Further, in the support structure for the free access floor according to the present embodiment, the base portion 221 that locks the attachment hole 112 a is located below the upper surface of the support tool main body 21. As a result, as shown in FIG. 10B, the upper surface of the support body 21 can be seen in a state where the base 221 does not lock the mounting hole 112a, that is, in a state where the base 221 is separated from the mounting hole 112a. It contacts the lower surface of the connecting portion 112 formed in a planar shape.

  Therefore, since the upper surface of the support tool main body 21 is in close contact with the lower surface of the connecting portion 112, a sound is generated when the load is applied (sound generated when the component 1 and the support tool 2 collide). do not do. However, for example, when the insertion portion 222 is not sufficiently inserted into the mounting hole 112a due to a work mistake or the like, the base portion 221 that locks the mounting hole 112a is positioned below the upper surface of the support tool body 21. It is also conceivable that the upper surface of the support body 21 is not in intimate contact with the lower surface of the connecting portion 112 simply by being present.

  However, according to the support 2 according to the present embodiment, since the lower end of the support main body 21 is located below the lower end of the support column 12, the component 1 and the support 2 are structured floor X. When installed on the top, the lower end of the support body 21 comes into contact with the structural floor X. Thereby, the elastic part 23 is urged and elastically deformed by its own weight, so that the support body 21 approaches the pivoting part 22 in the vertical direction, that is, the support body 21 is It will move so that it may approach with respect to the connection part 112. FIG.

  Therefore, since the upper surface of the support tool main body 21 can be in close contact with the lower surface of the connecting portion 112 formed in a flat shape, no noise is generated. As described above, as a matter of course, when the insertion portion 222 is sufficiently inserted into the attachment hole 112a, even when the insertion portion 222 is not sufficiently inserted into the attachment hole 112a due to a work mistake or the like, the support body The upper surface of 21 can be brought into close contact with the lower surface of the connecting portion 112 formed in a planar shape, and as a result, it is possible to prevent the generation of noise when a load is applied.

  In addition, the free access floor constituent material and the support structure of the free access floor according to the present invention are not limited to the above-described embodiments, and various changes can be made without departing from the scope of the present invention. Of course. Moreover, it is needless to say that configurations, methods, and the like according to various modifications described below may be arbitrarily selected and employed in the configurations, methods, and the like according to the above-described embodiments.

  For example, the free access floor constituting material according to the present invention may be provided with groove-shaped easy-to-cut means on the upper surface of the panel portion in order to facilitate cutting. However, it is preferable to provide an easy cutting means so that the load bearing performance does not deteriorate.

  Further, in the free access floor constituting material 1 according to the above-described embodiment, the case has been described in which the lattice portion 111 is disposed over substantially the entire area of the panel portion 11, but the present invention is not limited to such a case. In short, it is only necessary that the lattice portion is provided in at least a part of the panel portion.

  Moreover, in the free access floor component 1 which concerns on the said embodiment, although the case where the panel part 11 was formed in a rectangular shape was demonstrated, it is not restricted to such a case, For example, it forms in circular shape and polygonal shape. It may be the case. In short, the panel unit may be configured to function as a floor surface.

  In the free access floor constituting material 1 according to the above embodiment, each plate-like member 111a is formed in a flat plate shape, and the openings 111b provided between the plate-like members 111a,. However, the present invention is not limited to such a case. For example, each plate-like member may be formed in a curved plate shape, or an opening provided between each plate-like member may be formed in a circular shape.

  Further, in the free access floor constituting material 1 according to the above-described embodiment, the case where only one of the continuous surface 111c on the upper end side or the connecting portion 112 on the lower end side is provided in the opening 111b has been described. However, the present invention is not limited to this case, and both the continuous surface and the connecting portion may be provided in the opening. For example, the connecting portion 112 is not limited to being formed integrally with the lattice portion 111 (plate-like member 111a,...), And even when the lower end portions of the plate-like member are connected to each other via a fixing means or the like. Good.

  Therefore, the free access floor constituting material 1 according to the present invention is intended for at least the lattice portion 111 formed of a synthetic resin, but the connecting portion 112 is not limited to the synthetic resin and has rigidity such as metal. You may be comprised with a raw material.

  Moreover, in the free access floor component 1 which concerns on the said embodiment, although the case where each connection part 112 was arrange | positioned so that support | pillar part 12, ... might be connected was demonstrated, it is not restricted to such a case.

  For example, the connecting portion may be a case where the lower end portions of the plate-like members 111a,... Are connected so as to close only one opening 111b, and two, three, five or more strut portions 12,. When connecting the lower ends of the plate-like members 111a,..., And when connecting the lower ends of the plate-like members 111a, so as to close all the openings 111b,. But you can.

  Moreover, in the free access floor constituent material 1 which concerns on the said embodiment, although the support | pillar part 12 was formed in the square cylinder shape and nine cases were provided, it was not restricted to such a case. For example, the column part may be formed in a cylindrical shape, or may be formed by being filled with a synthetic resin, or may be provided in two to eight or ten or more. In short, the column portion may be configured to function as a column.

  Further, the free access floor constituting material 1 according to the above embodiment has a case where the panel portion 11 and the support column portions 12 are integrally formed of synthetic resin, that is, a support column integrated type support column fixing type. Although described, it is not limited to such a case.

  For example, in the column-integrated type in which the column unit is attached to the panel unit when the panel unit is lifted, the column unit may be a column assembly type in which the column unit is retrofitted to the panel unit. It may be a column separation type which is a construction method in which the column part remains on the structural floor (building floor) X side when it is lifted. In short, the free access floor constituent material according to the present invention only needs to include at least a panel portion that functions as a floor surface.

  Further, in the support structure for the free access floor according to the above-described embodiment, the support 2 is inserted into the mounting hole 112a of the free access floor component 1 by inserting the insertion portion 222 of the support 2 into the free access floor component 1. However, the present invention is not limited to such a case. For example, the support may be pivotally attached to the free access floor constituent material by inserting a convex insertion portion provided in the free access floor constituent material into the mounting hole provided in the support tool. .

  Moreover, in the support structure of the free access floor which concerns on the said embodiment, although the case where the support tool main body 21 was formed in a cylindrical shape was demonstrated, it is not restricted to such a case. For example, the support tool main body may be formed in a rectangular tube shape, or may be formed by being filled with a synthetic resin. In short, the support tool main body may be configured to have a function of supporting the free access floor constituent material (panel portion).

  DESCRIPTION OF SYMBOLS 1 ... Free access floor constituent material, 2 ... Support tool, 11 ... Panel part, 12 ... Support | pillar part, 13 ... Rib, 21 ... Support tool main body, 22 ... Pivoting part, 23 ... Elastic part, 111 ... Lattice part, 111a ... Plate-like member, 111b ... Opening part, 111c ... Continuous surface, 112 ... Connection part, 112a ... Mounting hole, 112b ... Locking part, 113, 114 ... Engagement part, 115 ... Concave part, 211 ... Projection part, 212 ... concave part, 213 ... convex part, 221 ... base part, 222 ... insertion part, X ... structural floor

Claims (3)

A free access floor component having a panel portion that forms a floor surface on the upper surface, and a support that supports the panel portion;
The panel portion includes at least a portion of a lattice portion in which plate-like members are arranged in a lattice shape ,
The free access floor component includes a connecting portion that connects the lower end portions of the plate-like member, and a plurality of support columns that support the panel portion ,
The connecting portion is arranged so as to connect the supporting column portions to the lattice portion arranged over the plurality of supporting column portions, and the lower surface is formed in a planar shape.
The support is a free access floor support structure including a support main body that supports the lower surface of the connecting portion on the upper surface, and a pivoting portion that is pivotally attached to the connecting portion so as to be rotatable along the lower surface of the connecting portion. There,
The connecting portion includes a mounting hole to which the pivot attachment portion is attached,
The pivot attachment portion includes an insertion portion that protrudes upward and is inserted into the attachment hole.
Support, in order the upper surface of the support body to abut against the lower surface of the connecting portion, characterized Rukoto an elastic portion for relatively displacing the support body and the pivotally mounted portion in the vertical direction by elastic deformation Support structure for free access floor. The support structure for a free access floor according to claim 1, wherein the elastic part is formed in a plate shape curved downward and connects the support body and the pivot part. The pivoting portion includes a base portion that can lock the lower surface of the connecting portion on the upper surface,
The insertion part protrudes upward from the base part,
The support structure of the free access floor according to claim 1 or 2, wherein the upper surface of the base portion is positioned below the upper surface of the support body in a state where the elastic portion is restored.

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