JP5203633B2 - Floor panel - Google Patents

Description

The present invention relates to a floor panel that is easy to manufacture, excellent in strength, and excellent in handling.

The floor panel which comprises a free access floor is arrange | positioned on a support body, and space is formed under a floor panel. This underfloor is used for arranging wirings and flowing air.

Floor panels used in computer rooms where clean rooms and servers are installed need to create an air flow between the floor and the room for the purpose of air conditioning and dust prevention. Holes are provided. Therefore, the larger the aperture ratio, the smoother the air flow.

As a floor panel having such a large aperture ratio, there is a floor panel having a grid-like opening (Patent Document 1).

In addition, there is a floor panel in which ribs are arranged obliquely and have holes in an oblique direction (Non-Patent Document 1).
JP-A-9-88312 Registered design No. 918753

However, since the floor panel according to Patent Document 1 has a hole formed perpendicularly or parallel to the panel frame, when the carriage is run on the floor panel when installed indoors, In the vertical direction, there is a problem that the wobbling of the carriage becomes large. In addition, when the carriage travels in a direction parallel to the hole, there is a problem that the wheel of the carriage fits into the hole.

Further, if the holes are only in the vertical direction or the parallel direction, there is a problem that the strength of the floor panel is weak. Furthermore, there is a problem that the flow of air passing through the hole of the floor panel tends to be biased in one direction depending on the direction of the hole.

Since the floor panel according to Non-Patent Document 1 has a hole in an oblique direction, there is no problem such as a cart passing over the floor panel. However, since the direction of the hole in the floor panel is directional, In addition, there is a problem that it does not look good unless the orientation of the floor panel is aligned.

Further, the floor panel is made of die-casting and is manufactured by injection molding molten metal into a mold from one side of the floor panel, but the asymmetrical shape has a problem that the manufacturability is poor.

The present invention has been made in view of such problems, and has high strength, excellent manufacturability, does not cause a problem even if the carriage passes through the upper part, and further disperses the direction of the air passing through the floor panel. An object of the present invention is to provide a floor panel that can be installed and has no orientation.

In order to achieve the above-described object, the present invention provides a rectangular frame portion, a plurality of first ribs provided in parallel to the frame portion, and a plurality of layers provided in an oblique direction with respect to the frame portion. A plurality of second ribs are formed in a rectangular unit of a minimum unit surrounded by the first ribs, and formed by the first ribs and the second ribs. The longitudinal direction of the hole to be formed is formed in an oblique direction with respect to the frame portion, and the arrangement of the first rib and the second rib is parallel to the frame portion of the rectangular portion formed by the frame portion. In addition, the rectangular portion is symmetrical with respect to the center line in at least one direction and is a point object with respect to the central point of the rectangular portion formed by the frame portion, and the second rib is formed by the frame portion. centered point the center of, and forming a quadrilateral similar to each other Furoapa Is Le.

The first rib is composed of a first parallel rib and a second parallel rib, and the first parallel rib is substantially the same thickness as the frame portion, and the first parallel rib The enclosed rectangular portion is divided into four by the second parallel ribs, and the height from the upper surface of the second parallel ribs is lower than the height from the upper surface of the first parallel ribs. The height from the upper surface of the rib is lower than the height from the upper surface of the second parallel rib, and two sides of the rectangular unit of the smallest unit surrounded by the first rib on which the second rib is arranged are It may be composed of a first parallel rib and the other two sides may be composed of a second parallel rib .

According to the present invention, the strength is high, the productivity is excellent, no problem occurs even if the carriage passes through the upper part, the direction of the air passing through the floor panel can be dispersed, and there is no installation directionality. Floor panels can be provided.

Hereinafter, embodiments of the present invention will be described in detail. FIG. 1 is a perspective view of the floor panel 1 according to the present embodiment as viewed from the back side. The floor panel 1 has a rectangular shape surrounded on all four sides by a frame portion 3, and parallel ribs 5 and 6 that are first ribs and oblique ribs 7 that are second ribs are arranged.

The parallel ribs 5 are substantially the same thickness as the frame portion 3 and are portions that mainly support the strength of the floor panel 1. The parallel ribs 6 are lower than the parallel ribs 5 and are arranged so as to further divide the rectangular portion surrounded by the parallel ribs 5 into four equal parts.

The oblique rib 7 has a lower height than the parallel rib 6 and divides the inside of the rectangular portion surrounded by the parallel rib 6 in the oblique direction. Therefore, a hole surrounded by the parallel ribs 5 and 6 and the oblique rib 7 is formed in the floor panel 1. That is, the longitudinal direction of the hole of the floor panel 1 is formed obliquely with respect to the frame portion 3 by the oblique rib 7. The oblique rib 7 is at an angle of 45 ° with respect to the frame 3. Moreover, the parallel rib 6 and the diagonal direction rib 7 support the intensity | strength of the floor panel 1, and bear the role which disperse | distributes stress.

The floor panel 1 is mainly manufactured by die casting. Although it does not specify as a material, it is desirable that it is strong and lightweight, for example, an aluminum alloy or a magnesium alloy is used.

FIG. 2 is a view as seen from the surface of the floor panel 1. The floor panel 1 is roughly divided into four by parallel ribs 5 passing through the center of the floor panel 1, and each of the divided parts is set to the first to fourth quadrant positions, the floor panel 1 is inclined in the first and third quadrant positions. The direction of the rib 7 and the direction of the oblique rib 7 in the second and fourth quadrant positions are changed from each other.

That is, the arrangement of the oblique ribs 7 in the floor panel 1 is line symmetric with respect to the center line (parallel rib 5) in at least one direction parallel to the frame portion passing through the center point 9, and the center point. It is formed so as to be point-symmetric with respect to 9 as a base point.

As described above, in the floor panel 1, the oblique rib 7 is provided so as to form a quadrangle 10 similar to each other around the center point 9 of the rectangular portion formed by the frame portion 3. In other words, the quadrilateral 10 formed by the oblique ribs 7 (which forms an angle of 45 ° with the rectangular portion formed by the frame portion 3) is similar to each other around the center point 9 of the floor panel 1 at regular intervals. Formed with.

FIG. 3 is a diagram showing the difference in stress transmission depending on the direction of the second rib in the floor panel. FIG. 3A shows the case where the second rib is parallel (or perpendicular) to the parallel rib 5. FIG. 3B is a diagram showing the case where the second rib is the oblique direction rib 7 as in the present embodiment.

3A, when a certain force is applied to the stress acting portion 11 on the parallel rib 5a, the stress transmission 13 is made to the parallel rib 5b through the parallel rib 9. In FIG. In this case, the parallel ribs 5a and the parallel ribs 5b are separated from each other, and the parallel ribs 9 are low in height and weak in strength compared to other ribs, so the stress transmission 13 is not efficiently performed. Stress concentration occurs in the stress acting part 11.

FIG. 3B shows a case where the oblique direction rib 7 is provided as in the present embodiment. Similar to FIG. 3A, when a certain force is applied to the stress acting portion 11 on the parallel rib 5 a, the stress transmission 13 is made to the parallel rib 5 c via the oblique rib 7. That is, since the force received by the parallel ribs 5a is transmitted to the parallel ribs 5c that are close to the parallel ribs 5a, the stress transmission 13 is efficient, and the parallel ribs 5a and the parallel ribs 5c are perpendicular to each other. This is advantageous in terms of strength.

4 and 5 show calculation results obtained by FEM analysis for the difference in strength. 4 (a) to 4 (c) are simplified models of a panel subjected to FEM analysis, and FIG. 4 (a) shows a rib disposed only in a direction parallel (or perpendicular) to the frame. In the first, third quadrant, and the second, fourth quadrant, the direction of the parallel ribs is changed (model A). In FIG. FIG. 4C shows a structure in which ribs are arranged in an oblique direction (model C) as in the present embodiment.

FIG. 5 is a diagram showing the relationship between the volume of each model and the maximum deformation amount at that time by calculating a maximum deformation amount of each model by applying a constant force to the center of each simple model. The horizontal axis of FIG. 5 shows the total volume when the rib thickness of each model is changed. That is, a smaller volume represents a lighter weight.

In FIG. 5, models A to C respectively correspond to those in FIG. As is clear from FIG. 5, when the comparison is made with the same volume, that is, the same mass, it can be seen that model A has the largest deformation amount and model C has the smallest deformation amount. This is because the model C with the oblique ribs distributed the stress most efficiently. Thus, the oblique direction rib 7 is advantageous in terms of strength.

FIG. 6 is a diagram illustrating a state in which the floor panels 1 are continuously arranged. Since the floor panel 1 has no directivity in the pattern formed by the ribs, the floor panel 1 is good in appearance without worrying about the direction of the panel itself when the floor panels 1 are arranged side by side.

The floor panel 1 is usually arranged in a direction parallel (or vertical) to the wall of the room, but the passage in the room is also generally parallel (or vertical) to the wall (direction A in the figure). Often provided. For this reason, even if a carriage or the like is transported in the direction of the passage on the floor panel 1, the oblique ribs 7 are not parallel (or perpendicular) to the traveling direction of the carriage.

As described above, according to the present embodiment, the floor panel 1 has the oblique ribs 7, so that the strength is superior to the case where the ribs are arranged only in the direction parallel or perpendicular to the frame 3. Therefore, if the strength is the same, the weight can be further reduced.

Moreover, since each rib is arrange | positioned symmetrically about the floor panel 1, it is not necessary to care about a panel direction in the case of installation. Even when the floor panel 1 is manufactured, if the product shape adopts oblique ribs, when the molten metal is injected into the mold by die casting, the flow of the molten metal becomes smooth, the occurrence of defects is suppressed, and the yield is good. , The quality is stable.

The holes of the floor panel 1 are formed in an oblique direction with respect to the frame 3 by the oblique ribs 7. For this reason, even when a carriage or the like is transported on the floor panel 1 in a direction parallel to or perpendicular to the floor panel 1, rattling or wheel of the carriage does not fit into the hole.

Furthermore, since the direction of the hole is not unidirectional, the flow of wind passing through the floor panel 1 is dispersed, and dust accumulation or the like hardly occurs.

Next, a second embodiment will be described. In the following embodiment, the same number as the number shown in FIG. 2 is used for the component that performs the same function as the floor panel 1, and a duplicate description is avoided.

FIG. 7 is a view seen from the surface of the floor panel 20 according to the second embodiment. The floor panel 20 has a rectangular shape surrounded on all four sides by the frame portion 3, and parallel ribs 5 and 6 as first ribs and oblique ribs 7 as second ribs are arranged. The oblique rib 7 forms an angle of 45 ° with respect to the frame portion 3.

The floor panel 20 is roughly divided into four by the parallel ribs 5 passing through the center of the floor panel 20, and each of the divided portions is set to the first to fourth quadrant positions. The direction of the rib 7 and the direction of the oblique rib 7 in the second and fourth quadrant positions are changed from each other.

That is, the arrangement of the oblique ribs 7 on the floor panel 20 is line symmetric with respect to the center line (parallel rib 5) in at least one direction parallel to the frame portion passing through the center point 9, and the center point. It is formed so as to be point-symmetric with respect to 9 as a base point.

Therefore, the oblique rib 7 has a pattern formed radially at regular intervals with the center point 9 of the floor panel 20 as a base point.

According to 2nd Embodiment, there exists an effect similar to the floor panel 1. FIG. That is, since the floor panel 20 has the oblique direction rib 7, the strength is excellent as compared with the case where the rib is arranged only in the direction parallel or perpendicular to the frame 3. Therefore, if the strength is the same, the weight can be further reduced.

Further, since the ribs in the oblique direction are arranged, the productivity is good.

Since the hole of the floor panel 20 is formed in an oblique direction with respect to the frame 3 by the oblique direction rib 7, even when a carriage or the like is transported on the floor panel 20 in a direction parallel to or perpendicular to the floor panel 20, the hole is also formed. There is no rattling or wheel of the bogie fit into the hole.

Furthermore, since the direction of the hole is not one direction, the flow of wind passing through the floor panel 20 is dispersed, and dust accumulation or the like hardly occurs.

Next, a third embodiment will be described. FIG. 8 is a view seen from the surface of the floor panel 30 according to the third embodiment.

The floor panel 30 has a rectangular shape surrounded on all four sides by the frame portion 3, and the parallel ribs 5 and 6 that are the first ribs and the oblique rib 7 that is the second rib are arranged. The oblique rib 7 is at an angle of 45 ° with respect to the frame 3. The arrangement of the oblique ribs 7 is such that the directions of the oblique ribs 7 in the small rectangular portions 31 adjacent to each other are changed with the small rectangular portion 31 formed by the parallel ribs 5 and 6 as one element.

That is, the arrangement of the oblique ribs 7 on the floor panel 30 is line symmetric with respect to the center line (parallel rib 5) in at least one direction parallel to the frame portion passing through the center point 9, and the center point. It is formed so as to be point-symmetric with respect to 9 as a base point.

Therefore, the floor panel 30 has a pattern in which a plurality of rectangular portions (an angle of 45 ° with the small rectangular portion 31) formed by the oblique ribs 7 is formed at regular intervals.

According to 3rd Embodiment, there exists an effect similar to the floor panel 1. FIG. That is, since the floor panel 30 has the oblique direction ribs 7, the strength is superior to the case where the ribs are arranged only in the direction parallel or perpendicular to the frame 3. Therefore, if the strength is the same, the weight can be further reduced.

Further, since the ribs in the oblique direction are arranged, the productivity is good.

Since the holes of the floor panel 30 are formed in the oblique direction with respect to the frame 3 by the oblique direction ribs 7, even when carrying a carriage or the like on the floor panel 30 in a direction parallel to or perpendicular to the floor panel 30, There is no rattling or wheel of the bogie fit into the hole.

Furthermore, since the direction of the hole is not one direction, the flow of wind passing through the floor panel 20 is dispersed, and dust accumulation or the like hardly occurs.

As mentioned above, although embodiment of this invention was described referring an accompanying drawing, the technical scope of this invention is not influenced by embodiment mentioned above. It is obvious for those skilled in the art that various modifications or modifications can be conceived within the scope of the technical idea described in the claims, and these are naturally within the technical scope of the present invention. It is understood that it belongs.

For example, in the embodiment of the present invention, the arrangement of the ribs is completely line symmetric and point symmetric. However, in manufacturing the floor panel, the rib on the side where the molten metal is injected is on the opposite side (final filling portion side). Changes such as making the ribs slightly thicker may be added. In this case, the rib thickness and the like are not strictly point-symmetric, but the rib arrangement may be line-symmetric and point-symmetric.

The perspective view which looked at the floor panel 1 concerning 1st Embodiment from the back surface. The figure seen from the surface of the floor panel 1. FIG. It is the figure which showed the difference in the transmission of the stress by the direction of the 2nd rib in a floor panel, (a) is the figure which showed the case where the 2nd rib is parallel (or perpendicular | vertical) with the parallel rib 5, b) is a diagram showing a case where the second rib is the oblique rib 7; This is a simplified model of a panel subjected to FEM analysis. (A) shows ribs arranged only in the direction parallel (or perpendicular) to the frame, and is parallel in the first and third quadrants and in the second and fourth quadrants. The rib direction is changed (model A), (b) is a rib arranged only in the direction parallel (or perpendicular) to the frame, and the rib is arranged in a grid pattern on the entire surface (model B), ( (c) is a diagram showing a model (model C) in which ribs are arranged in an oblique direction. The figure which showed the relationship between the volume of each model, and the maximum deformation amount. The figure which shows the state which has arrange | positioned the floor panel 1 continuously. The figure seen from the surface of the floor panel 20 concerning 2nd Embodiment. The figure seen from the surface of the floor panel 30 concerning 3rd Embodiment.

Explanation of symbols

1, 20, 30 ......... Floor panel 3 ......... Frame portion 5, 6 ......... Parallel rib 7 ......... Slanting rib 9 ......... Center point 10 ...... Rectangle 11 ......... Stress point 13 ......... Stress transmission 31 ......... Small rectangular part

Claims (2)

A rectangular frame,
A plurality of first ribs provided in parallel to the frame portion;
A plurality of second ribs provided obliquely with respect to the frame portion;
Have
By forming a plurality of second ribs in the rectangular unit of the minimum unit surrounded by the first ribs, the longitudinal direction of the holes formed by the first ribs and the second ribs is determined by the frame. Formed obliquely to the part ,
An arrangement of the first rib and the second rib is symmetrical with respect to a center line in at least one direction parallel to the frame portion of the rectangular portion formed by the frame portion, and is formed by the frame portion. The second rib is a point object with respect to the center point of the rectangular portion to be formed, and the second rib forms a quadrangle that is similar to each other with the center of the rectangular portion formed by the frame portion as the center point. Floor panel to be. The first rib is composed of a first parallel rib and a second parallel rib,
  The first parallel rib has substantially the same thickness as the frame portion,
  Dividing the rectangular portion surrounded by the first parallel ribs into four by the second parallel ribs;
  The height from the upper surface of the second parallel rib is lower than the height from the upper surface of the first parallel rib,
  The height from the upper surface of the second rib is lower than the height from the upper surface of the second parallel rib,
  Two sides of the rectangular unit of the smallest unit surrounded by the first rib on which the second rib is arranged are constituted by the first parallel rib, and the other two sides are constituted by the second parallel rib. The floor panel according to claim 1, wherein

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