JP4224353B2 - Free access floor - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a free access floor for constructing a floating floor by laying floor panels in a grid pattern on a foundation floor surface via support legs, and more particularly to a step elimination structure between adjacent floor panels.
[0002]
[Prior art]
Conventionally, as disclosed in, for example, Patent Document 1, a large number of support legs are provided on a foundation floor surface, and floor panels that are supported at the four corners by the support legs are laid in a grid pattern to form a floating floor. The free access floor to be built is known.
[0003]
[Patent Document 1]
Japanese Patent Laid-Open No. 2002-47786
By the way, this kind of free access floor constructs a floating floor by supporting the four corners of the floor panel with support legs, so when a load is applied through a transport vehicle carrying a transported object, the side edge portion of the floor panel Sunk, and there was a risk that a step would be formed between adjacent panels.
When such a level difference occurs, vibrations may occur in the transport vehicle, which may adversely affect the transported objects placed on the transport vehicle, and is particularly preferable in a free access floor constructed in a clean room that handles precision equipment. Absent.
[0005]
For the purpose of eliminating the above-mentioned steps, auxiliary support legs that support the side edge portion of the floor panel are installed, or a special floor panel made of a high-strength material that does not cause the side edge portion to sink, etc. Although these measures have been taken, both of these measures are costly, and when the auxiliary support legs are installed, the construction period becomes longer due to the time and effort required, and as a result, the cost of constructing the floating floor becomes high. It was.
[0006]
[Problems to be solved by the invention]
The present invention has been made in view of such a conventional problem, and reduces the occurrence of a step between adjacent floor panels without using means such as installing auxiliary support legs or using special floor panels. An object of the present invention is to provide a free access floor which can be eliminated at a cost and does not have a possibility of causing vibration during traveling of the transport vehicle and adversely affecting the transported object.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, the free access floor of the present invention has a large number of supporting legs arranged on the foundation floor surface, and floor panels supported at the four corners by these supporting legs are laid out in a grid pattern. It is a free access floor that is constructed by forming a floating floor and forming a wheel bearing path for transporting a vehicle on the surface of the floating floor, and the wheel bearing path is formed by side edges of adjacent floor panels. a reinforcing plate having an end portion in a position at a distance from the said purpose fabric portion Ide straddle the joint portion which is removably attached to the floor panel surface, Ri Na form to prevent the level difference occurs at the joint portion, the A groove having a depth corresponding to the thickness of the reinforcing plate is provided on the surface of the floor panel, and the reinforcing plate is detachably mounted in the groove so that the wheel mounting path is substantially flush with the floating floor surface. It is characterized by being formed .
[0008]
According to such a configuration, it is possible to prevent the sinking of the side edge portion of the floor panel and to generate a step between the adjacent floor panels by simply attaching the reinforcing plate across the adjacent floor panels. Can be prevented.
[0009]
There can be considered a mode in which the reinforcing plate is disposed continuously in the length direction of the wheel mounting path and a mode in which the reinforcing plate is discontinuously disposed in the length direction of the wheel mounting path.
In order to prevent vibrations of the transport vehicle by eliminating the level difference, it is preferable that the reinforcing plate is continuously arranged over the length direction of the wheel mounting path.
In order to reduce the number of reinforcing plates used and to reduce the cost, it is preferable to dispose the reinforcing plates discontinuously over the length direction of the wheel mounting path.
[0010]
Moreover, the aspect which is a short reinforcement board which has the length which straddles the joint part of one place, and the aspect which is a long reinforcement board which has the length which straddles several joint parts can be considered for the said reinforcement board. In order to prevent vibration of the transport vehicle by eliminating the step, it is preferable that the long reinforcing plate has a length that straddles a plurality of joint portions.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, examples of the embodiment of the present invention will be described with reference to the drawings. However, the present invention is not limited to the illustrated examples, and various variations are conceivable.
[0013]
First, the example shown in FIGS. 1 to 3 will be described. The free access floor according to the present invention basically has a plurality of support legs 2 arranged on a basic floor surface 1 as in the prior art, and floor panels 3 supported at the four corners by the support legs 2 are arranged in a grid pattern. The floating floor 4 is constructed by laying in a shape, and a wheel mounting path 5 for traveling the transport vehicle is formed on the surface of the floating floor 4.
[0014]
The support leg 2 is mounted so that the screw shaft 2b can be screwed up and down with respect to the base portion 2a fixed to the base floor surface 1, and the support cap portion 2c is fixed to the upper end of the screw shaft 2b. It is formed so as to be adjustable, and is regularly installed at a predetermined interval so as to be arranged in a grid pattern on the foundation floor surface 1.
[0015]
The floor panel 3 is formed in a square shape of a predetermined size by die casting using an aluminum alloy, press forming using a steel plate, or the like, and the locking portions 3a provided on the back surfaces of the four corners are provided on the support legs 2. The support cap 2c is detachably supported by the four support legs 2 while being engaged with the protrusion 2d of the support cap portion 2c.
[0016]
In any floor panel 3, a groove 6 having a predetermined width is formed along the panel center line over the entire length of the floor panel 3, and a reinforcing plate 7 is detachably attached in the groove 6. The wheel mounting path 5 is formed substantially flush with the surface of the floating floor 4.
[0017]
The reinforcing plate 7 is made of steel, stainless steel, aluminum, or other hard material, and has a width W that is greater than or equal to the width of the wheel 8 of the transport vehicle that travels on the floating floor 4, a length L that is substantially the same size as the floor panel 3, 3 is formed in the shape of a strip having a thickness T substantially the same as the depth of the groove 6 provided on the surface of 3, so as to straddle the joint portion 4 a formed by the side edges 3 b of the adjacent floor panels 3. The two floor panels 3 adjacent to each other are mounted over the groove 6.
[0018]
Further, a plurality of screw shafts 7a are integrally projected on the back surface of the reinforcing plate 7, and the screw shafts 7a are inserted into the holes 9 of the grooves 6 provided at positions corresponding to the screw shafts 7a. By tightening the nut 10 on the front end side of the screw shaft 7a protruding to the back side of the panel 3, the reinforcing plate 7 is detachably attached to the adjacent floor panel 3.
[0019]
Further, in this example, the groove 6 is provided over the entire length of the floor panel 3, the reinforcing plate 7 having a length substantially the same as the floor panel 3, and the joint portion 4 a formed by the side edges 3 b of the adjacent floor panels 3. By mounting in the groove 6 so as to straddle one place and arranging the reinforcing plate 7 continuously over the length direction of the wheel mounting path 5, it is possible to prevent the occurrence of a step in the joint portion 4a and to adjoin each other. It is assumed that there is no step between the reinforcing plates 7 and that the reinforcing plate 7 is mounted in the groove 6 so that no step between the floor panel 3 and the reinforcing plate 7 occurs.
[0020]
Therefore, as shown in FIG. 3, the wheel mounting path 5 is formed continuously along the transfer direction of the transport vehicle, and the wheel 8 can travel on the wheel support path 5 when transporting the transport vehicle. For example, the conveyance vehicle can be driven without vibration, and is particularly useful in a free access floor constructed in a clean room that handles precision equipment.
[0021]
Note that the means for detachably attaching the reinforcing plate 7 to the floor panel 3 is not limited to the means for fastening the screw shaft 7a projecting from the reinforcing plate 7 with the nut 10 on the back side of the floor panel 3 as described above. For example, as shown in FIG. 4, a hole 9 provided in the groove 6 of the floor panel 3 is a screw hole, and a through hole 11 is provided in the reinforcing plate 7 corresponding to the screw hole 9. A screw 12 to be joined is inserted into the through hole 11 so that the reinforcing plate 7 is detachably attached to the floor panel 3, or although not shown, it is made of metal or plastic instead of the screw shaft 7 a and the screw 12. Well-known attachment means such as riveting the reinforcing plate 7 to the floor panel 3 by rivets can be employed.
[0022]
In FIG. 5, the example which formed the reinforcement board in the elongate shape which has the length which straddles the joint part 4a is shown.
That is, the reinforcing plate 7 ′ in this example is formed in a long band shape having a length L ′ corresponding to two floor panels 3, and the reinforcing plate 7 ′ is a side edge of the adjacent floor panel 3. It is mounted across the grooves 6 of the three adjacent floor panels 3 so as to straddle the joint portion 4a formed by 3b.
The other configuration is the same as the example shown in FIGS.
[0023]
Also in this example, as shown in FIG. 5, the wheel mounting path 5 is formed continuously along the transfer direction of the transport vehicle, and the wheel 8 is moved on the wheel support path 5 when the transport vehicle is transferred. If it runs, a conveyance vehicle can be run without generating a vibration.
[0024]
FIG. 6 shows an example in which the reinforcing plate is formed in a short shape having a length straddling one joint portion 4 a and is discontinuously disposed in the length direction of the wheel mounting path 5.
That is, the reinforcing plate 7 ″ of this example is formed in a rectangular shape having a minimum length L ″ that straddles the joint portion 4a formed by the side edges 3b of the adjacent floor panels 3, The reinforcing plate 7 ″ is mounted over the groove 6 of the two adjacent floor panels 3 so as to straddle the joint portion 4a formed by the side edges 3b of the adjacent floor panels 3.
[0025]
Further, in this example, a pair of left and right grooves 6 ′ having a length half that of the reinforcing plate 7 ″ is formed at a position near the side edge 3 b of the floor panel 3, and the reinforcing plates are placed in the groove 6 ′. By attaching 7 "so that attachment or detachment is possible, the wheel mounting path 5 is formed substantially flush with the surface of the floating floor 4.
The other configuration is the same as the example shown in FIGS.
[0026]
In this example, as shown in FIG. 6, the wheel mounting path 5 is formed discontinuously along the transfer direction of the transport vehicle, and the wheel 8 is moved on the wheel support path 5 when the transport vehicle is transferred. If it is made to drive, a conveyance vehicle can be made to drive without generating a vibration.
[0027]
5 and 6, the means for detachably attaching the reinforcing plate 7 to the floor panel 3 is that the screw shaft 7a protruding from the reinforcing plate 7 is tightened with a nut 10 on the back side of the floor panel 3. However, the present invention is not limited thereto, and well-known means such as a means using screw holes 9 and screws 12 shown in FIG. 4 and a means for riveting as described above can be adopted.
[0028]
As mentioned above, although the example of embodiment of this invention was demonstrated with reference to drawings, the free access floor concerning this invention is not limited to the example of illustration, The category of the technical idea described in the claim It goes without saying that various changes can be made.
[0029]
【The invention's effect】
Since the free access floor according to the present invention is configured as described above, an auxiliary support leg that supports the side edge portion of the floor panel is separately installed, or a high-strength material that does not cause the side edge portion to sink. Adjacent floor panels prevent the sinking of the side edges of the floor panels with simple and low-cost means by simply attaching a reinforcing plate between adjacent floor panels without the need to use special floor panels. It is possible to prevent a step from occurring between them.
Therefore, there is no possibility that vibrations may occur when the transport vehicle is running and adversely affect the transported goods. In particular, it is possible to provide a new free access floor suitable for construction in a clean room that handles precision equipment at a low cost. did it.
[0030]
In addition, the free access floor according to the present invention is a continuous wheel mounting using a long reinforcing plate according to the installation conditions at the construction site, the type of transported goods, the weight of the transported vehicle, the floor construction budget, etc. Various modes are possible, such as forming a road or forming a discontinuous wheel mounting path using a short reinforcing plate.
[0031]
Further, if a groove is provided on the floor panel surface and the reinforcing plate is detachably mounted in the groove, and the wheel mounting path is formed substantially flush with the floating floor surface, adjacent reinforcing plates and reinforcing plates There is no difference in level between the floor panel and, therefore, there are many effects such as more reliably preventing the occurrence of vibrations when the transport vehicle is traveling.
[Brief description of the drawings]
FIG. 1 is an enlarged sectional view of a main part showing an example of an embodiment of a free access floor according to the present invention.
FIG. 2 is an exploded perspective view of a floor panel and a reinforcing plate used in a free access floor according to the present invention.
FIG. 3 is a plan view showing an example in which a wheel mounting path is formed continuously using a belt-shaped reinforcing plate that straddles one joint.
FIG. 4 is an exploded perspective view showing a modified example of a reinforcing plate attaching means for a floor panel.
FIG. 5 is a plan view showing an example in which a wheel mounting path is formed continuously using a long reinforcing plate straddling two or more joints.
FIG. 6 is a plan view showing an example in which a wheel mounting path is formed discontinuously using a square-shaped reinforcing plate that straddles one joint.
[Explanation of symbols]
1: Foundation floor surface 2: Support leg 3: Floor panel 4: Floating floor 4a: Joint part 5: Wheel mounting path 6, 6 ': Grooves 7, 7', 7 ": Reinforcement plate 8: Wheel of the transport vehicle

Claims (5)

A large number of support legs are arranged on the foundation floor, and floor panels that are supported at the four corners by the support legs are laid out in a grid pattern, and a floating floor is constructed on the surface of the floating floor. It is a free access floor that forms a wheel bearing path of
The wheel mounting Uketamawaro is detachably attached to the reinforcing plate having an end portion remote from said purpose fabric portion Ide straddle the joints formed by the side edges of adjacent floor panels positioned on the floor panel surface, wherein Ri Na form to prevent the level difference occurs at the joint portion,
A groove having a depth corresponding to the thickness of the reinforcing plate is provided on the surface of the floor panel, the reinforcing plate is detachably mounted in the groove, and the wheel mounting path is substantially flush with the floating floor surface. Free access floor, characterized by its shape .   The free access floor according to claim 1, wherein the reinforcing plate is continuously arranged over a length direction of the wheel mounting path.   The free access floor according to claim 1, wherein the reinforcing plate is disposed discontinuously along a length direction of the wheel mounting path.   The free access floor according to claim 2 or 3, wherein the reinforcing plate is a short reinforcing plate having a length straddling one joint part.   The free access floor according to claim 2 or 3, wherein the reinforcing plate is a long reinforcing plate having a length straddling a plurality of joint portions.

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