JP4380904B2

JP4380904B2 - Metal perforated flooring

Info

Publication number: JP4380904B2
Application number: JP2000310494A
Authority: JP
Inventors: 明彦藤原; 壮均濱崎; 紀雄佐藤
Original assignee: 三進金属工業株式会社
Priority date: 2000-10-11
Filing date: 2000-10-11
Publication date: 2009-12-09
Anticipated expiration: 2020-10-11
Also published as: JP2002115362A

Description

【０００１】
【発明の属する技術分野】
この発明は、例えば積層式書架や積層式倉庫等における階上フロア用として敷設される金属製開孔床材に関する。
【０００２】
【従来の技術】
図書館等の積層式書架においては、多数の鋼製開孔床材を敷設施工することによって、階上フロアを形成するものがある。
【０００３】
例えば実開平５−４７１３２号公報に開示される従来の鋼製開孔床材は、水平方向に所定の間隔おきに複数の桟部材が並列に配置されるとともに、各桟部材を串刺し状に貫通するように補強パイプが配置された状態で、各桟部材が補強パイプに溶接されて各桟部材の位置決めが行われる。更にその位置決め製品における各桟部材の両端に沿って一対の床枠が配置されて、両床枠と各桟部材の両端とが溶接固定されるものである。
【０００４】
【発明が解決しようとする課題】
しかしながら、上記従来の鋼製開孔床材は、各桟部材の補強パイプへの固定や、各桟部材両端の床枠への固定を、溶接によって行うものであるため、精度良く溶接処理を行うには、高度な熟練度に加えて緻密かつ繊細な作業が必要となり、多大な労力が必要となって組付作業が困難になるとともに、コストの増大を招くという問題があった。
【０００５】
この発明は、上記従来技術の問題を解消し、簡単かつ精度良く組み付けることができて、コストの削減を図ることができる金属製開孔床材を提供することを目的とする。
【０００６】
【課題を解決するための手段】
上記目的を達成するため、この発明は、複数の桟部材が水平方向に所定の間隔おきに並列に配置されるとともに、各桟部材の両側端部に沿って一対の床枠が配置される金属製開孔床材において、前記床枠に、前記桟部材における両側端部の上下両端位置に対応して、係合部が設けられるとともに、前記桟部材における両側端部の中間高さ位置に対応して、ねじ挿通孔が設けられ、前記桟部材における両側端部の上下両端位置に、前記係合部に係合可能な被係合部が設けられるとともに、両側端部の中間高さ位置に、前記ねじ挿通孔に対応してねじ止め部が設けられ、前記係合部が前記被係合部に係合された状態で、ねじが前記ねじ挿通孔に挿通されて前記ねじ止め部に締結されることにより、前記桟部材が前記床枠に連結固定されてなるものを要旨としている。
【０００７】
この発明の金属製開孔床材においては、床枠の係合部を、桟部材の被係合部に係合するだけで、桟部材及び床枠を位置精度良く仮組することができる。更にその仮組状態において、ねじを床枠に挿通して桟部材に締結するだけで、桟部材を床枠に確実に固定することができる。
【０００８】
本発明においては、前記桟部材が、その上下両端部に桟部材長さ方向に連続して延びる角チューブ状の上下両側片と、上下両側片間に架け渡されるように一体形成され、かつ桟部材長さ方向に連続して延びる横向き山型形状の中間片とを具備し、前記上下両側片の両側端部開口部が前記被係合部として構成され、前記床枠における所要部分が内側に切り起こされてその切り起こし片が前記係合部として構成され、前記係合部が前記被係合部に挿入されて係合されるよう構成されてなるものを採用するのが好ましい。
【０００９】
すなわちこの場合、チューブ状の上下両側片が補強部材となって、桟部材の強度、ひいては床材全体の強度を向上させることができる。また、チューブ状上下両側片の両側端部開口部を被係合部として利用することにより、被係合部を別途形成する必要がなく、被係合部の製作作業を省略することができる。更に床枠の所要領域をプレス成形等によって切り起こすだけで簡単に係合部を形成することができる。
【００１０】
また本発明においては、並列配置される前記複数の桟部材のうち、一つおきの桟部材が、前記ねじにより前記床枠にねじ止め固定されてなる構成を採用するのが望ましい。
【００１１】
すなわちこの構成を採用する場合、全ての桟部材をねじ止めするものと比べて、ねじ止め作業を半減させることができる。なお、一つおきの桟部材を床枠にねじ止めすることによって、ねじ止めされない桟部材も含めて全ての桟部材が、一対の床枠に挟持されて確実に固定されため、組付強度の低下等が発生することはなく、十分な組付強度を得ることができる。
【００１２】
更に本発明においては、前記床枠及び前記桟部材が、アルミニウム成形品をもって構成されてなるものを採用するのが良い。
【００１３】
すなわちこの場合、鋼製のものに比べて、床枠や桟部材の成形加工を容易に行うことができる。
【００１４】
【発明の実施の形態】
図１及び図２はこの発明の実施形態である金属製開孔床材（１０）を示す斜視図である。両図に示すように、この開孔床材（１０）は、水平方向に所定の間隔おきに並列に配置される複数の桟部材（２０）と、各桟部材（２０）の両側端部に沿って水平方向に延びるように配置される一対の床枠（３０）とを基本的な構成要素として備えている。
【００１５】
図１ないし図６に示すように、桟部材（２０）は、アルミニウム（その合金を含む）の押出成形品をもって構成されており、上下両端部に桟部材長さ方向に連続して延びる角チューブ形状の上側片（２１）及び下側片（２１）と、上下両側片（２１）（２１）間に架け渡されるように一体形成され、かつ桟部材長さ方向に連続して延びる略山型形状の中間片（２５）と、上下両側片（２１）（２１）間に架け渡されるように一体形成され、かつ上記中間片（２５）に対し平行して桟部材長さ方向に連続して延びる断面円弧状の補強片（２４）とを有している。
【００１６】
また、中間片（２５）における山頂部内側には、桟部材長さ方向に連続して延びる略円形の孔が形成されており、この略円形孔における両側端部の開口周縁部がねじ止め部（２６）として構成されている。
【００１７】
更に桟部材（２０）のチューブ状上下両側片（２１）（２１）における両側端部の開口部によって、被係合部としての係合孔（２２）（２２）が構成される。
【００１８】
一方、図２ないし図５、図７に示すように、床枠（３０）は、所定の長さを有する略帯板状のアルミニウム成形品を持って構成されており、長さ方向に所定の間隔おきに、換言すれば上記桟部材（２０）の配列ピッチに対応して、上下両側の所要領域が床材（１０）に対し内側に切り起こされて、その切り起こし片によって、係合部としての係合突起（３２）が形成されている。
【００１９】
更に床枠（３０）における係合突起（３２）の各間のうち、一つおきの間には、その高さ方向中間位置に、上記桟部材（２０）における両側端部のねじ止め部（２６）にそれぞれ対応して、ねじ挿通孔（３６）がそれぞれ形成されている。
【００２０】
本実施形態の開孔床材（１０）は、上記構成の床枠（３０）及び桟部材（２０）が、以下のように組み付けられて形成される。
【００２１】
すなわち、各桟部材（２０）の両側端部における上下の係合孔（２２）（２２）内に、桟部材（２０）の両側から、一対の床枠（３０）の係合突起（３２）をそれぞれ挿入して係合し、桟部材（２０）を床枠（３０）に仮固定する。これにより、一対の床枠（３０）間に、複数の桟部材（２０）が所定のピッチ配列で精度良く位置決めされた状態に配置される。なお、この状態におていは、並列に配置された複数の桟部材（２０）のうち、一つおきの桟部材（２０）における両側端部のねじ止め部（２６）が、両床枠（３０）のねじ挿通孔（３６）に位置的に対応して配置される。
【００２２】
次に、タッピングビス等のねじ（４０）を一対の床枠（３０）の各ねじ挿通孔（３６）に両側から挿入して、各桟部材（２０）のねじ止め部（２６）に締結固定する。こうして、所要の桟部材（２０）が一対の床枠（３０）に連結固定されることにより、ねじ止めされない桟部材（２０）も含めて全ての桟部材（２０）が、一対の床枠（３０）に挟持されて固定される。
【００２３】
これにより、本実施形態の開孔床材（１０）が組み付けられる。
【００２４】
なお、この組付状態においては、図３に示すように、各桟部材（２０）における中間片（２５）の山頂部先端が、隣り合う桟部材（２０）の上下両側片（２１）（２１）に水平方向に交わる態様に配置されて、開孔床材（１０）の表裏間における視線の透過が防止されて、優れた遮蔽性を得ることができる。更に隣り合う桟部材（２０）（２０）間には、床材表裏間を貫通する隙間が設けられて、良好な通気性及び採光性を得ることができる。
【００２５】
以上のように、本実施形態の開孔床材（１０）によれば、床枠（３０）に形成した係合突起（３２）を、桟部材（２０）に形成した係合孔（２２）に嵌め込んで、桟部材（２０）及び床枠（３０）を仮止めするとともに、その仮止め状態で、桟部材（２０）を床枠（３０）にねじ止めして固定するものであるため、面倒な溶接作業も必要なく、簡単かつ位置精度良く組み付けることができるとともに、コストの削減を図ることができる。
【００２６】
また、本実施形態においては、桟部材（２０）を、上下両側片（２１）（２１）間に、中間片（２５）及び補強片（２４）を架け渡した構造とすることにより、全体としてチューブ状に形成されるため、床材として十分な強度を得ることができる。
【００２７】
更に本実施形態においては、桟部材（２０）及び床枠（３０）として、鋼製のものに比べて、加工が容易なアルミニウム製のものを用いているため、桟部材（２０）や床枠（３０）等の部品の製作を簡単に行うことができる。
【００２８】
特に桟部材（２０）は、押出成形によって形成するものであるため、効率良く生産することができる。
【００２９】
また、床枠（３０）の所要領域を切り起こして、係合突起（３２）を形成するものであるため、プレス成形等を用いて、係合突起（３２）を簡単に形成することができる。
【００３０】
また本実施形態においては、一つおきの桟部材（２０）を床枠（３０）の両側からねじ止めするものであるため、全ての桟部材（２０）をねじ止めする場合と比較して、ねじ止め作業を半減させることができ、より一層組付作業を容易に行うことができる。なお本実施形態においては、一つおきの桟部材（２０）を床枠（３０）の両側からねじ止めすることにより、全ての桟部材（２０）が一対の床枠（３０）に挟持されて確実に固定されるため、十分な組付強度を得ることができる。
【００３１】
もっとも、本発明においては、全ての桟部材（２０）を床枠（３０）にねじ止めしても良く、また２つおき以上のピッチで、桟部材（２０）をねじ止めするようにしても良い。
【００３２】
【発明の効果】
以上のように、この発明の金属製開孔床材によれば、床枠の係合部を、桟部材の被係合部に係合して、桟部材及び床枠を仮止めするとともに、その仮止め状態で、桟部材を床枠にねじ止めして固定するものであるため、面倒な溶接作業等を必要とせず、ねじ止めだけで簡単かつ位置精度良く組み付けることができるとともに、コストを削減することができるという効果がある。
【００３３】
本発明において、桟部材にチューブ状の上下両側片を形成し、その上下両側片の両側端部開口部を被係合部として構成するとともに、床枠の切り起こし片を前記係合部として構成する場合、チューブ状の上下両側片によって桟部材の強度、ひいては床材全体の強度を向上させることができる。更にチューブ状上下両側片の両側端部開口部を被係合部として利用することにより、被係合部を別途形成する必要がなく、部品の製造を簡単に行うことができる。また床枠の所要領域をプレス成形等によって切り起こすだけで簡単に係合部を形成でき、部品の製造をより一層簡単に行うことができるという利点がある。
【００３４】
また本発明において、一つおきの桟部材を床枠にねじ止めする場合には、ねじ止め作業を半減できるので、より一層組付作業を容易に行うことができるという利点がある。
【００３５】
更に本発明において、桟部材及び床枠として、アルミニウム製のものを用いる場合には、成形加工を容易に行うことができるので、部品の製造をなお一層簡単に行うことができるという利点がある。
【図面の簡単な説明】
【図１】この発明の実施形態である金属製開孔床材を示す斜視図である。
【図２】実施形態の床材の要部を拡大して分解状態で示す斜視図である。
【図３】図２のIII-III 線断面図である。
【図４】図３のIV−IV線断面図である。
【図５】図３のＶ−Ｖ線断面図である。
【図６】実施形態の開孔床材に適用された桟部材を示す断面図である。
【図７】同図（ａ）は実施形態の開孔床材に適用された内側面図、同図（ｂ）は同図（ａ）のＢ−Ｂ線断面図、同図（ｃ）は同図（ａ）のＣ−Ｃ線断面図である。
【符号の説明】
１０…開孔床材
２０…桟部材
２１…上側片、下側片
２２…係合孔（被係合部）
２５…中間片
２６…ねじ止め部
３０…床枠
３２…係合突起（係合部）
３６…ねじ挿通孔
４０…ねじ[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a metal perforated floor material laid for an upper floor in, for example, a stacked book rack or a stacked warehouse.
[0002]
[Prior art]
Some stacked bookshelves such as libraries form an upper floor by laying and constructing a large number of steel perforated flooring materials.
[0003]
For example, in the conventional steel perforated flooring disclosed in Japanese Utility Model Publication No. 5-47132, a plurality of cross members are arranged in parallel at predetermined intervals in the horizontal direction, and each cross member is penetrated in a skewered manner. In the state where the reinforcing pipes are arranged as described above, the respective crosspiece members are welded to the reinforcing pipe, and the respective crosspiece members are positioned. Further, a pair of floor frames are arranged along both ends of each crosspiece member in the positioning product, and both floor frames and both ends of each crosspiece member are fixed by welding.
[0004]
[Problems to be solved by the invention]
However, the conventional steel perforated flooring material is used to fix each crosspiece member to the reinforcing pipe and to the floor frame at both ends of each crosspiece member by welding. However, in addition to a high degree of skill, precise and delicate work is required, and a great deal of labor is required, which makes assembly work difficult and increases costs.
[0005]
An object of the present invention is to provide a metal perforated flooring that can solve the above-described problems of the prior art, can be assembled easily and accurately, and can reduce costs.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a metal in which a plurality of crosspieces are arranged in parallel in the horizontal direction at predetermined intervals, and a pair of floor frames are arranged along both side ends of each crosspiece. In the perforated flooring material, the floor frame is provided with an engagement portion corresponding to the upper and lower end positions of both side end portions of the crosspiece member, and corresponds to the intermediate height position of the both side end portions of the crosspiece member. Then, screw insertion holes are provided, and engaged portions that can be engaged with the engaging portions are provided at both upper and lower end positions of both side end portions of the crosspiece member, and at intermediate height positions of both side end portions. A screwing portion is provided corresponding to the screw insertion hole, and a screw is inserted into the screw insertion hole and fastened to the screwing portion with the engagement portion engaged with the engaged portion. The crosspiece member is connected and fixed to the floor frame. It is the gist.
[0007]
In the metal perforated floor material of the present invention, the crosspiece member and the floor frame can be temporarily assembled with high positional accuracy simply by engaging the engaging portion of the floor frame with the engaged portion of the crosspiece member. Furthermore, in the temporarily assembled state, the crosspiece member can be securely fixed to the floor frame only by inserting the screw into the floor frame and fastening it to the crosspiece member.
[0008]
In the present invention, the crosspieces are integrally formed so as to be bridged between the upper and lower side pieces in the form of a square tube that extend continuously in the lengthwise direction of the crosspiece members at both upper and lower ends thereof, and A lateral mountain-shaped intermediate piece extending continuously in the length direction of the member, both side end openings of the upper and lower side pieces are configured as the engaged portions, and a required portion of the floor frame is on the inside It is preferable to adopt a structure in which the cut and raised piece is configured as the engaging portion, and the engaging portion is inserted into and engaged with the engaged portion.
[0009]
That is, in this case, the tube-like upper and lower side pieces serve as reinforcing members, and the strength of the crosspiece member and thus the strength of the entire flooring can be improved. In addition, by using the opening portions on both side ends of the upper and lower tubular pieces as the engaged portion, it is not necessary to separately form the engaged portion, and the manufacturing work of the engaged portion can be omitted. Furthermore, the engaging portion can be formed simply by raising the required area of the floor frame by press molding or the like.
[0010]
Moreover, in this invention, it is desirable to employ | adopt the structure formed by fixing every other crosspiece member to the said floor frame with the said screw among the said some crosspiece members arrange | positioned in parallel.
[0011]
That is, when this configuration is adopted, the screwing operation can be halved as compared with the case where all the crosspiece members are screwed. In addition, by fixing every other crosspiece member to the floor frame, all crosspiece members, including crosspiece members that are not screwed, are clamped between the pair of floor frames and securely fixed. A reduction or the like does not occur, and a sufficient assembly strength can be obtained.
[0012]
Furthermore, in this invention, it is good to employ | adopt what the said floor frame and the said crosspiece member comprised with the aluminum molded product.
[0013]
That is, in this case, it is possible to easily form the floor frame and the crosspiece member as compared with the steel one.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
FIG.1 and FIG.2 is a perspective view which shows the metal apertured floor material (10) which is embodiment of this invention. As shown in both figures, this perforated flooring (10) is provided with a plurality of cross members (20) arranged in parallel at predetermined intervals in the horizontal direction, and at both end portions of each cross member (20). And a pair of floor frames (30) arranged so as to extend in the horizontal direction along the horizontal direction.
[0015]
As shown in FIGS. 1 to 6, the crosspiece member (20) is formed of an aluminum (including an alloy thereof) extruded product, and is a square tube continuously extending in the lengthwise direction of the crosspiece member at both upper and lower ends. The upper and lower pieces (21) and (21) having a shape are formed in an integrated manner so as to be bridged between the upper and lower side pieces (21) and (21), and extend substantially continuously in the crosspiece member length direction. The intermediate piece (25) having a shape and the upper and lower side pieces (21) and (21) are integrally formed so as to be bridged between the upper and lower side pieces (21) and (21), and in parallel to the intermediate piece (25). And a reinforcing piece (24) having an arcuate cross section.
[0016]
Further, a substantially circular hole extending continuously in the crosspiece member length direction is formed on the inner side of the peak portion of the intermediate piece (25), and the opening peripheral edge portions at both side ends of the substantially circular hole are screwed portions. (26).
[0017]
Furthermore, the engagement holes (22) and (22) as the engaged portions are constituted by the opening portions at both end portions of the tubular upper and lower side pieces (21) and (21) of the crosspiece member (20).
[0018]
On the other hand, as shown in FIG. 2 to FIG. 5 and FIG. 7, the floor frame (30) has a substantially strip-shaped aluminum molded product having a predetermined length, and has a predetermined length in the length direction. In other words, the required regions on both the upper and lower sides are cut and raised inward with respect to the floor material (10) in accordance with the arrangement pitch of the crosspiece members (20), and the engaging portions are formed by the cut and raised pieces. An engaging projection (32) is formed.
[0019]
Furthermore, between every other of the engaging projections (32) in the floor frame (30), between every other, at the intermediate position in the height direction, screwed portions ( The screw insertion holes (36) are respectively formed corresponding to 26).
[0020]
The perforated floor material (10) of the present embodiment is formed by assembling the floor frame (30) and the crosspiece member (20) having the above-described configuration as follows.
[0021]
That is, the engagement protrusions (32) of the pair of floor frames (30) from both sides of the crosspiece member (20) in the upper and lower engagement holes (22) and (22) at both side end portions of each crosspiece member (20). Are inserted and engaged to temporarily fix the crosspiece member (20) to the floor frame (30). Thereby, between a pair of floor frames (30), the some crosspiece member (20) is arrange | positioned in the state accurately positioned by the predetermined pitch arrangement | sequence. In this state, among the plurality of cross members (20) arranged in parallel, the screwing portions (26) at the both end portions of every other cross member (20) are connected to both floor frames ( 30) and the screw insertion hole (36).
[0022]
Next, screws (40) such as tapping screws are inserted into the screw insertion holes (36) of the pair of floor frames (30) from both sides, and fastened and fixed to the screwing portions (26) of the crosspiece members (20). To do. In this way, when the required crosspiece member (20) is connected and fixed to the pair of floor frames (30), all the crosspiece members (20) including the crosspiece members (20) that are not screwed together are paired with the pair of floor frames ( 30) and fixed.
[0023]
Thereby, the apertured floor material (10) of this embodiment is assembled | attached.
[0024]
In this assembled state, as shown in FIG. 3, the top end of the peak of the intermediate piece (25) in each crosspiece member (20) is positioned on the upper and lower side pieces (21) (21 ) In a manner that intersects in the horizontal direction, the transmission of the line of sight between the front and back of the perforated flooring (10) is prevented, and excellent shielding properties can be obtained. Further, a gap passing between the front and back of the flooring material is provided between the adjacent crosspieces (20) and (20), so that good air permeability and daylighting can be obtained.
[0025]
As described above, according to the perforated flooring material (10) of the present embodiment, the engagement protrusion (32) formed on the floor frame (30) has the engagement hole (22) formed on the crosspiece member (20). Since the crosspiece member (20) and the floor frame (30) are temporarily fixed, and the crosspiece member (20) is screwed to the floor frame (30) and fixed in the temporarily fixed state. In addition, troublesome welding work is not required, it can be assembled easily and with high positional accuracy, and cost can be reduced.
[0026]
Moreover, in this embodiment, the crosspiece member (20) has a structure in which the intermediate piece (25) and the reinforcing piece (24) are bridged between the upper and lower side pieces (21) and (21). Since it is formed in a tube shape, sufficient strength as a flooring can be obtained.
[0027]
Furthermore, in this embodiment, since the crosspiece member (20) and the floor frame (30) are made of aluminum which is easier to process than the steel one, the crosspiece member (20) and the floor frame are used. (30) etc. can be easily manufactured.
[0028]
In particular, since the crosspiece (20) is formed by extrusion, it can be efficiently produced.
[0029]
Further, since the required region of the floor frame (30) is cut and raised to form the engagement protrusion (32), the engagement protrusion (32) can be easily formed using press molding or the like. .
[0030]
In this embodiment, since every other crosspiece member (20) is screwed from both sides of the floor frame (30), compared to the case where all the crosspiece members (20) are screwed, The screwing operation can be halved, and the assembly operation can be performed more easily. In this embodiment, every other crosspiece member (20) is clamped between the pair of floor frames (30) by screwing every other crosspiece member (20) from both sides of the floor frame (30). Since it is securely fixed, sufficient assembly strength can be obtained.
[0031]
However, in the present invention, all the crosspiece members (20) may be screwed to the floor frame (30), or the crosspiece members (20) may be screwed at a pitch of two or more. good.
[0032]
【The invention's effect】
As described above, according to the metal aperture floor material of the present invention, the engaging portion of the floor frame is engaged with the engaged portion of the crosspiece member, and the crosspiece member and the floor frame are temporarily fixed, In this temporarily fixed state, the crosspiece member is fixed to the floor frame by screwing, so there is no need for troublesome welding work, etc. There is an effect that it can be reduced.
[0033]
In the present invention, tube-shaped upper and lower side pieces are formed on the crosspiece member, and both side end opening portions of the upper and lower side pieces are configured as engaged portions, and the cut and raised pieces of the floor frame are configured as the engaging portions. In this case, the strength of the crosspiece member, and consequently the strength of the entire flooring material can be improved by the tubular upper and lower side pieces. Furthermore, by using the opening portions on both side ends of the upper and lower pieces of the tubular shape as the engaged portion, it is not necessary to separately form the engaged portion, and the parts can be easily manufactured. Further, there is an advantage that the engaging portion can be easily formed simply by cutting up the required area of the floor frame by press molding or the like, and the manufacture of the parts can be performed more easily.
[0034]
Further, in the present invention, when every other crosspiece member is screwed to the floor frame, the screwing work can be halved, so that there is an advantage that the assembling work can be further facilitated.
[0035]
Furthermore, in the present invention, when aluminum members are used as the crosspieces and the floor frame, there is an advantage that the parts can be manufactured more easily because the forming process can be easily performed.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a metal perforated floor material according to an embodiment of the present invention.
FIG. 2 is an enlarged perspective view showing an essential part of the flooring of the embodiment in an exploded state.
3 is a cross-sectional view taken along line III-III in FIG.
4 is a cross-sectional view taken along line IV-IV in FIG.
5 is a cross-sectional view taken along line VV in FIG.
FIG. 6 is a cross-sectional view showing a crosspiece member applied to the apertured floor material of the embodiment.
7A is an inner side view applied to the perforated flooring of the embodiment, FIG. 7B is a cross-sectional view taken along the line BB in FIG. 7A, and FIG. It is CC sectional view taken on the line of the figure (a).
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 ... Opening floor material 20 ... Crosspiece member 21 ... Upper piece, lower piece 22 ... Engagement hole (engaged part)
25 ... Intermediate piece 26 ... Screwing part 30 ... Floor frame 32 ... Engagement protrusion (engagement part)
36 ... Screw insertion hole 40 ... Screw

Claims

In the metal perforated flooring material in which a plurality of crosspiece members are arranged in parallel at predetermined intervals in the horizontal direction, and a pair of floor frames are arranged along both side ends of each crosspiece member,
The floor frame is provided with engaging portions corresponding to the upper and lower end positions of both side ends of the crosspiece member, and screw insertion holes corresponding to intermediate height positions of the side end portions of the crosspiece member. Provided,
Engaged portions that can be engaged with the engaging portions are provided at both upper and lower end positions of both side end portions of the crosspiece member, and screws corresponding to the screw insertion holes are provided at intermediate height positions of both end portions. A stop is provided,
With the engaging portion engaged with the engaged portion, a screw is inserted into the screw insertion hole and fastened to the screwing portion, whereby the crosspiece member is connected and fixed to the floor frame. A metal perforated flooring material characterized by comprising:

The crosspieces are integrally formed so as to be bridged between the upper and lower side pieces of the square tube extending continuously in the lengthwise direction of the crosspiece members at both upper and lower ends thereof, and in the lengthwise direction of the crosspiece members Comprising a laterally extending mountain-shaped intermediate piece extending continuously,
Both side end openings of the upper and lower side pieces are configured as the engaged portion,
A required portion in the floor frame is cut and raised inside, and the cut and raised piece is configured as the engagement portion,
The metal perforated flooring material according to claim 1, wherein the engaging portion is configured to be inserted into and engaged with the engaged portion.

The metal perforated flooring material according to claim 1 or 2, wherein among the plurality of crosspiece members arranged in parallel, every other crosspiece member is screwed and fixed to the floor frame by the screw.

The metal perforated flooring material according to any one of claims 1 to 3, wherein the floor frame and the crosspiece member are formed of an aluminum molded product.