CN116254979A - Light overhead floor - Google Patents

Abstract

A light elevated floor comprises a ceiling and a rib structure, wherein the rib structure forms a plurality of main ribs with the height of at least 25 mm on the ceiling so as to improve the structural strength of the light elevated floor, and therefore, when the light elevated floor bears heavier machine equipment in a semiconductor process, the problem of cracking of the light elevated floor can be avoided.

Description

Light overhead floor

Technical Field

The invention relates to a floor structure, in particular to a light elevated floor with a rib structure.

Background

In the existing semiconductor factory building, a raised floor with a plurality of micro-holes is configured to clean the air quality of the environment and ensure the specification of the clean room.

At present, raised floors are manufactured in a die casting mode. In the die casting process, a die is used to manufacture a desired product, and before the die casting operation is performed, a release layer is coated in the die to facilitate the subsequent demolding operation.

However, the structural strength of the existing raised floor is often insufficient, so that when the raised floor is used for carrying heavy equipment in the semiconductor process, the raised floor is easy to crack. On the other hand, there is also a problem that the raised floor is excessively heavy, not only wastes materials, but also increases manufacturing costs.

Therefore, how to overcome the above-mentioned problems in the prior art has become a major challenge in the industry.

Disclosure of Invention

In view of the above-mentioned drawbacks of the prior art, an object of the present invention is to provide a lightweight raised floor, which can avoid the problem of chipping.

The lightweight raised floor of the present invention includes: a ceiling having opposite ground and honeycomb sides; and a rib structure disposed on the honeycomb side of the antenna plate to form a plurality of recesses, wherein the rib structure is sequentially defined with a first rib, a second rib, a third rib, a fourth rib, a fifth rib, a sixth rib and a seventh rib from the edge of the antenna plate to the middle, the heights of the first rib and the seventh rib relative to the honeycomb side are at least 25 mm to serve as main ribs, and the heights of the second rib to the sixth rib relative to the honeycomb side are lower than 25 mm to serve as middle ribs.

In the lightweight raised floor, the plurality of recesses are arranged in an array to form a honeycomb structure on the honeycomb side.

In the foregoing light raised floor, the first rib is formed at the edge of the ceiling to form a side rib of the light raised floor, so as to serve as a frame of the light raised floor for fixedly connecting the footstand.

In the lightweight raised floor, the height of the first rib relative to the honeycomb side is greater than the height of the second rib to the seventh rib relative to the honeycomb side, the sum of the heights of the first rib and the ceiling is 38 to 52 mm, and the thickness of the ceiling is 2.5 mm.

In the lightweight raised floor described above, the second to sixth ribs have a height of 5 to 18.5 mm with respect to the honeycomb side.

In the aforementioned lightweight raised floor, the seventh rib has a height of 26 to 44 mm with respect to the honeycomb side.

In the aforementioned lightweight raised floor, the first rib has a width of 5 to 6 mm.

In the lightweight raised floor, the width of the second rib to the sixth rib is 2.5 to 3.2 mm.

In the aforementioned lightweight raised floor, the seventh rib has a width of 4 to 4.5 mm.

In the lightweight raised floor, a plurality of through holes are formed in the ceiling plate to communicate the floor side and the honeycomb side, and the positions of the through holes correspond to the plurality of concave parts.

In the lightweight raised floor, the rib structure is formed with two ribs in the longitudinal direction and the transverse direction to divide the lightweight raised floor into four regions, 25 sub-regions are formed between the adjacent second rib, third rib, fourth rib, fifth rib and sixth rib, each sub-region has a concave portion, another concave portion is formed at the central portion of the rib in the form of the seventh rib, a cross rib is configured in the concave portion, and a wing plate is formed around the ceiling, so that the height of the cross rib and the thickness of the wing plate are both greater than the thickness of the ceiling, and the strength of the lightweight raised floor at the middle position is improved. For example, the first rib to the sixth rib are symmetrically distributed with respect to the groined rib. Or 21 other subregions are separated from each other by the second rib, the third rib, the fourth rib, the fifth rib and the sixth rib in the cross rib, and nine through holes are formed in each subregion, but the through holes are not formed in the subregion of the central part of the cross rib.

Therefore, in the light raised floor of the present invention, the height of the main rib of the rib structure relative to the honeycomb side is at least 25 mm, so as to improve the structural strength of the light raised floor.

Drawings

Fig. 1A is a perspective view of a first embodiment of the lightweight raised floor according to the present invention. Fig. 1B is a front plan view of fig. 1A.

FIG. 1C is a cross-sectional view of FIG. 1B taken along line C-C in one direction.

Fig. 1D is a schematic perspective view of the other view of fig. 1A.

Fig. 2A is a schematic perspective view of a second embodiment of the lightweight raised floor according to the present invention. Fig. 2B is a front plan view of fig. 2A.

Fig. 2C is a cross-sectional view of fig. 2B taken along line C-C in one direction thereof.

Fig. 3A is a perspective view of a third embodiment of the lightweight raised floor according to the present invention. Fig. 3B is a front plan view of fig. 3A.

FIG. 3C is a cross-sectional view of FIG. 3B taken along line C-C in one direction.

Fig. 4A is a perspective view of a fourth embodiment of the lightweight raised floor according to the present invention. Fig. 4B is a front plan view of fig. 4A.

Fig. 4C is a cross-sectional view of fig. 4B along a Y-Y section line in one direction thereof.

Fig. 4D is a cross-sectional view of fig. 4B taken along line X-X in one direction.

Fig. 5A is a front plan view of a fifth embodiment of the lightweight raised floor according to the present invention. Fig. 5B is a schematic perspective view of the other view of fig. 5A.

The reference numerals are as follows:

1,2,3,4,5 light overhead floor

1a,2a,3a,4a rib structure

1b,2b,3b,4b foot-stand

1c thimble position

1d,2d,3d,4d wing plate

10,20,30,40, ceiling

10a,20a,30a,40a floor side

10b,20b,30b,40b honeycomb side

11,21,31,41 first rib

12,22,32,42 second rib

13,23,33,43 third rib

14,24,34,44 a fourth rib

15,25,35,45, fifth rib

16,26,36,46 sixth rib

17,27,37,47 seventh rib

17a,27a,37a,47a cross-shaped ribs

50:punch hole

d1 to d7 width

H total height of

h0 to h7 height

Length L

R, S, recess

Height of T

t0, t1 thickness

Distance of separation w

Detailed Description

Further advantages and effects of the present invention will become apparent to those skilled in the art from the disclosure of the present invention by the following specific examples.

It should be understood that the structures, proportions, sizes, etc. shown in the drawings attached hereto are for the purpose of understanding and reading only and are not intended to limit the scope of the invention, which is defined by the appended claims, but rather by the appended claims. Also, the terms such as "upper", "lower", "left", "right" and "a" and the like are used in the present specification for convenience of description, but are not intended to limit the scope of the present invention, and the relative changes or modifications thereof are considered to be within the scope of the present invention without substantial modification of the technical content.

Fig. 1A, 1B, 1C and 1D are schematic views of a first embodiment of a lightweight raised floor 1 according to the present invention. The lightweight raised floor 1 of the present embodiment is intended to carry a relatively light load, which carries a load of about 300 kg.

The lightweight raised floor 1 has a ceiling 10 and a rib structure 1a provided on the ceiling 10.

The antenna board 10 has opposite ground sides 10a and honeycomb sides 10b, and the honeycomb sides 10b are respectively provided with the rib structures 1a in the longitudinal direction and the transverse direction to form a plurality of recesses S between the longitudinal and the transverse rib structures 1a, wherein fig. 1C only shows the longitudinal rib structures 1a, and the transverse rib structures 1a are identical to the longitudinal rib structures 1a, so the cross section of the transverse rib structures 1a is omitted.

In the present embodiment, the top board 10 is a rectangular body, such as a square board, with a length L of 600 mm and a thickness t0 of 2.5 mm, and a wing board 1d (with a thickness t1 of 6 mm, greater than the thickness t0 of the top board 10) is formed around the top board 10, and the four corners of the top board 10 are formed with feet 1b with an L-shaped convex (or L-shaped concave) bottom for fixing a supporting foot stand (not shown). For example, the foot rest 1b is used to adjust the overall height H of the lightweight raised floor 1 such that a plurality of lightweight raised floors 1 are located at the same horizontal plane.

Furthermore, the ground side 10a is a flat surface, and a plurality of recesses S are arranged in an array to form a honeycomb structure having a plurality of ejector pins 1c (at about the corners of the square area formed by every four recesses S) on the honeycomb side 10 b.

The rib structure 1a is defined with a first rib 11, a second rib 12, a third rib 13, a fourth rib 14, a fifth rib 15, a sixth rib 16 and a seventh rib 17 sequentially from the edge of the ceiling 10 to the middle (or from the left to the right to the middle as shown in fig. 1B and 1C), the heights h1, h7 of the first and seventh ribs 11,17 relative to the honeycomb side 10B are at least 25 mm (mm), and the heights h2 to h6 of the second to sixth ribs 12 to 16 relative to the honeycomb side 10B are lower than 25 mm, so the first and seventh ribs 11,17 are used as main ribs, the second to sixth ribs 12 to 16 are used as middle ribs, wherein the first to sixth ribs 11 to 16 are distributed symmetrically left and right (or vertically as shown in fig. 1B) based on the seventh rib 17, and the second ribs 12, the third ribs 13, the fourth ribs 14, the fifth ribs 15 and the seventh ribs 16 are arranged at a distance of 48 w.

In this embodiment, the first rib 11 is formed at the edge of the ceiling board 10 to form a side rib of the light raised floor 1, so as to serve as a frame of the light raised floor 1 for fixing the foot stand 1b. For example, the height H1 of the first rib 11 relative to the honeycomb side 10b is 35.5 mm, which is greater than the heights H2 to H7 of the second to seventh ribs 12 to 17 relative to the honeycomb side 10b, and the height sum T of the first rib 11 and the ceiling 10 (i.e., the height of the first rib 11 relative to the ground side 10 a) is 38 mm (i.e., t=h1+t0), and the total height H of the footstand 1b, the first rib 11 and the ceiling 10 (i.e., the foot height of the lightweight raised floor 1) is 46 mm.

Furthermore, the heights h2 to h7 of the second to seventh ribs of the rib structure 1a may be the same or different as required, as shown in fig. 1C. For example, the height h2 of the second rib 12 relative to the honeycomb side 10b is 5 mm, the height h3 of the third rib 13 relative to the honeycomb side 10b is 12 mm, the height h4 of the fourth rib 14 relative to the honeycomb side 10b is 5 mm, the height h5 of the fifth rib 15 relative to the honeycomb side 10b is 12 mm, the height h6 of the sixth rib 16 relative to the honeycomb side 10b is 5 mm, and the height h7 of the seventh rib 17 relative to the honeycomb side 10b is 26 mm, wherein the two seventh ribs 17 in the longitudinal and transverse directions form a cross rib to divide the lightweight raised floor 1 into four areas, 25 sub-areas are formed between the second rib 12, the third rib 13, the fourth rib 14, the fifth rib 15 and the sixth rib 16 adjacent to each other, each sub-area has a recess S, and a recess R of another embodiment is formed at the center of the cross rib. Further, the thickness of the ceiling board 10 in the recess R may be increased or the same as the thickness t0 of the ceiling board 10 as required, and the cross-shaped ribs 17a are disposed in the recess R, and the height h0 of the cross-shaped ribs relative to the honeycomb side 10b is 8 mm (greater than the thickness t0 of the ceiling board 10) so as to improve the compressive strength of the lightweight raised floor 1 at the middle. It should be appreciated that the heights h2 to h6 of the second to sixth ribs 12 to 16 (mid ribs) are regularly designed.

In addition, the widths d 1-d 7 of the ribs may be the same (e.g., the widths d 2-d 6 of the second-sixth ribs 12-16 are the same) or different, as shown in fig. 1C. For example, the width d1 of the first rib 11 is 5 mm, the width d2 of the second rib 12 is 2.8 mm, the width d3 of the third rib 13 is 2.8 mm, the width d4 of the fourth rib 14 is 2.8 mm, the width d5 of the fifth rib 15 is 2.8 mm, the width d6 of the sixth rib 16 is 2.8 mm, and the width d7 of the seventh rib 17 is 4 mm.

As can be seen from the above, the thickness t0 of the ceiling 10 of the lightweight raised floor 1 is smaller, and the heights h 2-h 6 of the majority of the rib structures 1a are also smaller, i.e. the heights h 2-h 6 of the middle ribs (second to sixth ribs 12-16) are much smaller than the heights h1, h7 of the main ribs (first ribs 11 and seventh ribs 17), so as to facilitate saving materials and reducing weight.

Fig. 2A, 2B and 2C are schematic views of a second embodiment of the lightweight raised floor 2 of the present invention. The light raised floor 2 of the present embodiment is used for carrying a light load, which carries about 500 kg, and is different from the first embodiment in that the height of most of the rib structures 2a is increased due to about 200 kg of load increase, and the same parts are not repeated below.

In this embodiment, the height H1 of the first rib 21 relative to the honeycomb side 20B is 41 mm, the height sum T of the first rib 21 and the ceiling 20 (i.e., the height of the first rib 21 relative to the ground side 20 a) is 43.5 mm, and the total height H of the footstand 2B, the first rib 21 and the ceiling 20 is 55 mm, wherein the thickness T1 of the wing plate 2d is 6 mm, the first rib 21 is formed at the edge of the ceiling 20 to be a side rib of the lightweight raised floor 2 to serve as a frame of the lightweight raised floor 2, and the first to sixth ribs 21 to 26 are symmetrically distributed on the left and right sides (or vertically as shown in fig. 2B) with the seventh rib 27 as a reference.

In the rib structure 2a, as shown in fig. 2C, the height h2 of the second rib 22 relative to the honeycomb side 20b is 8 mm, the height h3 of the third rib 23 relative to the honeycomb side 20b is 18 mm, the height h4 of the fourth rib 24 relative to the honeycomb side 20b is 8 mm, the height h5 of the fifth rib 25 relative to the honeycomb side 20b is 18 mm, the height h6 of the sixth rib 26 relative to the honeycomb side 20b is 8 mm, and the height h7 of the seventh rib 27 relative to the honeycomb side 20b is 32 mm. It should be understood that the heights h2 to h6 of the second to sixth ribs 22 to 26 (middle ribs) are regularly designed, and the heights h1 to h5, h7 of the remaining ribs are increased except that the height h6 of the sixth rib 26 is reduced as compared with the first embodiment. On the other hand, the thickness of the ceiling 20 at the recess R is increased by 5.5 mm (i.e., greater than the thickness t0 of the ceiling 20 at other locations), and the cross-shaped ribs 27a are disposed in the recess R, which have a height h0 of 8 mm (greater than the thickness t0 of the ceiling 20) with respect to the honeycomb side 20b, so as to increase the compressive strength of the lightweight raised floor 2 at the middle.

In addition, the widths d 1-d 7 of the ribs may be the same or different as desired, as shown in FIG. 2C. For example, the width d1 of the first rib 21 is 6 mm, the width d2 of the second rib 22 is 2.5 mm, the width d3 of the third rib 23 is 2.5 mm, the width d4 of the fourth rib 24 is 2.5 mm, the width d5 of the fifth rib 25 is 2.5 mm, the width d6 of the sixth rib 26 is 2.5 mm, and the width d7 of the seventh rib 27 is 4.2 mm.

As can be seen from the above, the heights h 2-h 6 of the rib structures 2a of the lightweight raised floor 2 are also smaller, i.e. the heights h 2-h 6 of the middle ribs (the second to sixth ribs 22-26) are much smaller than the heights h1, h7 of the main ribs (the first ribs 21 and the seventh ribs 27), and the thickness t0 of the ceiling 20 is 2.5 mm, the length L is 600 mm, and the thickness t1 of the wing plate 2d is 6 mm, which are the same as those of the first embodiment, even the specifications of the foot stand 2b are the same, so as to facilitate saving materials and reducing weight.

Furthermore, since the volume of the rib structure 2a of the present embodiment is slightly larger than that of the rib structure 1a of the first embodiment, the load carrying capacity of the lightweight raised floor 2 of the present embodiment can be increased by 200 kg.

Fig. 3A, 3B and 3C are schematic views of a third embodiment of the lightweight raised floor 3 of the present invention. The lightweight raised floor 3 of the present embodiment is used for carrying a light load, which carries about 500 kg, and is different from the first embodiment in that the local height of the rib structure 3a is changed, so the same points will not be described in detail.

In the present embodiment, the height H1 of the first rib 31 relative to the honeycomb side 30B is 40.5 mm, the height sum T of the first rib 31 and the ceiling 30 (i.e. the height of the first rib 31 relative to the ground side 30 a) is 43 mm, and the total height H of the footstand 3B, the first rib 31 and the ceiling 30 is 55 mm, wherein the thickness T1 of the wing plate 3d is 6 mm, the first rib 31 is formed at the edge of the ceiling 30 to be a side rib of the lightweight raised floor 3 to serve as a frame of the lightweight raised floor 3, and the first to sixth ribs 31 to 36 are symmetrically distributed on the left and right (or vertically as shown in fig. 3B) with the seventh rib 37 as a reference.

In the rib structure 3a, as shown in fig. 3C, the height h2 of the second rib 32 relative to the honeycomb side 30b is 10 mm, the height h3 of the third rib 33 relative to the honeycomb side 30b is 10 mm, the height h4 of the fourth rib 34 relative to the honeycomb side 30b is 18.5 mm, the height h5 of the fifth rib 35 relative to the honeycomb side 30b is 18.5 mm, the height h6 of the sixth rib 36 relative to the honeycomb side 30b is 10 mm, and the height h7 of the seventh rib 37 relative to the honeycomb side 30b is 30 mm. It should be appreciated that the heights h2 to h6 of the second to sixth ribs 32 to 36 (mid ribs) are substantially regularly designed. On the other hand, the thickness of the ceiling board 30 at the recess R is the same as the thickness t0 at the other places (or may be thickened at the recess R), and the cross-shaped ribs 37a are disposed in the recess R, which have a height h0 of 10 mm (greater than the thickness t0 of the ceiling board 30) with respect to the honeycomb side 30b, so as to enhance the compressive strength of the lightweight raised floor 3 at the middle.

In addition, the widths d 1-d 7 of the ribs may be the same or different as desired, as shown in FIG. 3C. For example, the width d1 of the first rib 31 is 5.5 mm, the width d2 of the second rib 32 is 2.8 mm, the width d3 of the third rib 33 is 2.8 mm, the width d4 of the fourth rib 34 is 3.2 mm, the width d5 of the fifth rib 35 is 3.2 mm, the width d6 of the sixth rib 36 is 2.8 mm, and the width d7 of the seventh rib 37 is 4.5 mm.

As can be seen from the above, the thickness t0 of the top plate 30 of the present embodiment is 2.5 mm, the length L is 600 mm, the thickness t1 of the wing plate 3d is 6 mm, which are the same as those of the first embodiment, and the specifications of the foot rest 3b are the same, so as to facilitate saving materials and reducing weight.

Furthermore, the volume of the rib structure 3a is substantially the same as that of the rib structure 2a of the second embodiment, and only the rib height arrangement is different, so that the load of the lightweight raised floor 3 is about 500 kg.

Fig. 4A, 4B and 4C are schematic views of a fourth embodiment of the lightweight raised floor 4 of the present invention. The lightweight raised floor 4 of the present embodiment is used for carrying a light load, which carries about 700 kg, and is different from the first embodiment in that the local height of the rib structure 4a is changed, so the same points will not be described in detail.

As shown in fig. 4B, the rib structure 4a is defined with a first rib 41, a second rib 42, a third rib 43, a fourth rib 44, a fifth rib 45, a sixth rib 46 and a seventh rib 47 sequentially from the edge of the ceiling 40 to the middle (from top to bottom to the middle as shown in fig. 4B), wherein the thickness t1 of the wing plate 4d is 6 mm, the first rib 41 is formed at the edge of the ceiling 40 and becomes a side rib of the lightweight raised floor 4 to serve as a frame of the lightweight raised floor 4, and the first to sixth ribs 41 to 46 are vertically symmetrically distributed based on the seventh rib 47.

In the present embodiment, the height H1 of the first rib 41 relative to the honeycomb side 40b is 49.5 mm, the height sum T of the first rib 41 and the ceiling 40 (i.e. the height of the first rib 41 relative to the ground side 40 a) is 52 mm, and the total height H of the foot stand 4b, the first rib 41 and the ceiling 40 is 55 mm.

In the rib structure 4a, as shown in fig. 4C, the height h2 of the second rib 42 relative to the honeycomb side 40b is 8 mm, the height h3 of the third rib 43 relative to the honeycomb side 40b is 16 mm, the height h4 of the fourth rib 44 relative to the honeycomb side 40b is 5 mm, the height h5 of the fifth rib 45 relative to the honeycomb side 40b is 16 mm, the height h6 of the sixth rib 46 relative to the honeycomb side 40b is 5 mm, and the height h7 of the seventh rib 47 relative to the honeycomb side 40b is 44 mm, so that the heights h1, h7 of the first rib 41 and the seventh rib 47 are larger than those of the foregoing embodiments to enhance the load bearing load of the lightweight raised floor 4. On the other hand, the thickness of the ceiling board 40 at the recess R is 5.5 mm (greater than the thickness t0 at other places), and the cross-shaped ribs 47a are disposed in the recess R, which have a height h0 of 8 mm (which is greater than the thickness t0 of the ceiling board 40 as in the second embodiment) with respect to the honeycomb side 40b, so as to enhance the compressive strength of the lightweight raised floor 4 at the middle.

In addition, the widths d 1-d 7 of the ribs may be the same or different as desired, as shown in FIG. 4C. For example, the width d1 of the first rib 41 is 6 mm, the width d2 of the second rib 42 is 2.5 mm, the width d3 of the third rib 43 is 2.5 mm, the width d4 of the fourth rib 44 is 2.5 mm, the width d5 of the fifth rib 45 is 2.5 mm, the width d6 of the sixth rib 46 is 2.5 mm, and the width d7 of the seventh rib 47 is 4.2 mm.

In addition, as shown in fig. 4D, the rib structure 4a is designed in the other direction (the left-right direction as shown in fig. 4B), and the other ribs are all the same size except for the fourth rib 44a, so the height h4 of the fourth rib 44a relative to the honeycomb side 40B can be adjusted to be higher than 25 mm, such as 32 mm, so that the fourth rib 44a becomes the main rib, and the width D4 thereof is 3 mm.

As can be seen from the above, the thickness t0 of the ceiling plate 40 of the light raised floor 4 is 2.5 mm, the length L is 600 mm, and the thickness t1 of the wing plate 4d is 6 mm, which are the same as those of the first embodiment, so as to facilitate saving materials and reducing weight.

Furthermore, the heights h 2-h 6 of the rib structures 4a are also smaller, i.e., the heights h 2-h 6 of the middle ribs (second to sixth ribs 42-46) are much smaller than the heights h1, h7 of the main ribs (first ribs 41 and seventh ribs 47), which is also beneficial for saving materials and reducing weight.

In addition, since the volume of the rib structure 4a of the present embodiment is slightly larger than that of the rib structure 2a of the second embodiment, the load of the lightweight raised floor 4 of the present embodiment can be increased by 200 kg compared with that of the second embodiment.

Fig. 5A and 5B are schematic views of a fifth embodiment of the lightweight raised floor 5 of the present invention. The difference between the present embodiment and the above embodiment is that the perforation is newly added, so the same parts will not be repeated hereinafter.

As shown in fig. 5A and 5B, according to the first embodiment, the lightweight raised floor 5 forms a plurality of through holes 50 communicating the ground side 10a and the honeycomb side 10B on the ceiling 10, and divides the honeycomb side 10B into four regions by the seventh rib 17 (the "cross" rib), each region forms 25 sub-regions (the "recess S"), and 21 other sub-regions (the "recess R, S") are spaced apart from each other by a plurality of ribs (the second rib 12, the third rib 13, the fourth rib 14, the fifth rib 15 and the sixth rib 16) in the "cross" rib, so that each sub-region has nine through holes 50, but the sub-regions (the "recess R") in the central portion of the "cross" rib do not form the through holes 50.

In the present embodiment, the positions of the plurality of through holes 50 are arranged corresponding to the plurality of recesses S. For example, nine through holes 50 are formed in each recess S, and the nine through holes 50 are arranged in an array such that each row has three through holes 50.

Therefore, the recess R of the central portion of the seventh rib 17 (the # -shaped rib) may not be provided with the through hole 50, and the height h0 of the inner cross rib 17a with respect to the honeycomb side 10b is greater than the thickness t0 of the ceiling 10, so as to enhance the strength of the lightweight raised floor 5.

It should be understood that the lightweight raised floors 2,3,4 of the second through fourth embodiments may also be identical to the fifth embodiment, i.e., a plurality of perforations 50 are formed in the recesses S thereof.

In summary, the height h1, h7 of the main ribs of the rib structures 1a,2a,3a,4a relative to the honeycomb sides 10b,20b,30b,40b is at least 25 mm, so that the structural strength of the lightweight raised floor 1,2,3,4,5 is improved, and the lightweight raised floor 1,2,3,4,5 can bear heavier equipment in the semiconductor process, so as to avoid the problem of cracking of the lightweight raised floor 1,2,3,4,5 in use. Further, the heights h1 to h7 and the widths d1 to d7 of the ribs are adjusted according to the load-bearing sizes of the light raised floor 1,2,3,4,5, that is, the heights h1 to h7 and the widths d1 to d7 of the ribs are smaller when the load-bearing sizes are small, so that the materials and the weight of the light raised floor 1,2,3,4,5 are saved.

Furthermore, by means of the design of the middle ribs, the structural strength of the lightweight raised floor 1,2,3,4,5 can be further improved.

The above embodiments are merely illustrative of the principles of the present invention and its effectiveness, and are not intended to limit the invention. Modifications to the above would be obvious to those of ordinary skill in the art, without departing from the spirit and scope of the present invention. The scope of the invention is therefore intended to be indicated by the appended claims.

Claims (13)

1. A lightweight raised floor, comprising:

a ceiling having opposite ground and honeycomb sides; and

the rib structure is arranged on the honeycomb side of the antenna board to form a plurality of concave parts, wherein the rib structure is sequentially defined with a first rib, a second rib, a third rib, a fourth rib, a fifth rib, a sixth rib and a seventh rib from the edge of the antenna board to the middle, the height of the first rib and the seventh rib relative to the honeycomb side is at least 25 mm to serve as a main rib, and the height of the second rib to the sixth rib relative to the honeycomb side is lower than 25 mm to serve as a middle rib.

2. The lightweight raised floor according to claim 1, wherein the plurality of recesses are arranged in an array to form a honeycomb structure on the honeycomb side.

3. The lightweight raised floor of claim 1, wherein the first ribs are formed on the edge of the ceiling to form side ribs of the lightweight raised floor for use as a rim of the lightweight raised floor for securing the footrests.

4. The lightweight raised floor according to claim 1, wherein the first rib has a height relative to the honeycomb side greater than the heights of the second rib to the seventh rib relative to the honeycomb side, and the sum of the heights of the first rib and the ceiling is 38 to 52 mm, and the thickness of the ceiling is 2.5 mm.

5. The lightweight raised floor according to claim 1, wherein the second to sixth ribs have a height of 5 to 18.5 mm relative to the honeycomb side.

6. The lightweight raised floor of claim 1, wherein the seventh ribs have a height of 26 to 44 millimeters relative to the honeycomb side.

7. The lightweight raised floor of claim 1, wherein the first ribs have a width of 5 to 6 millimeters.

8. The lightweight raised floor according to claim 1, wherein the width of the second rib to the sixth rib is 2.5 to 3.2 mm.

9. The lightweight raised floor of claim 1, wherein the seventh ribs have a width of 4 to 4.5 millimeters.

10. The lightweight raised floor as claimed in claim 1, wherein the ceiling is formed with a plurality of through holes communicating the floor side and the honeycomb side, and the positions of the plurality of through holes correspond to the plurality of recesses.

11. The lightweight raised floor according to claim 1, wherein the rib structure is formed with two of the seventh ribs in the longitudinal and transverse directions to divide the lightweight raised floor into four regions, 25 sub-regions are formed between the adjacent second, third, fourth, fifth and sixth ribs, each of the sub-regions has a recess, and another recess formed at the central portion of the # -shaped rib formed by the seventh rib is configured with a cross rib, and a wing plate is formed around the ceiling, so that the height of the cross rib and the thickness of the wing plate are greater than the thickness of the ceiling to enhance the strength of the lightweight raised floor at the middle.

12. The lightweight raised floor according to claim 11, wherein the first rib to the sixth rib are symmetrically distributed with respect to the groined rib.

13. The lightweight raised floor according to claim 11, wherein 21 other sub-areas are spaced apart in the cross rib by the second rib, the third rib, the fourth rib, the fifth rib and the sixth rib, and nine perforations are provided in each of the sub-areas, but the perforations are not formed in the sub-areas in the central portion of the cross rib.

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