JP2012149427A - Panel structure - Google Patents

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JP2012149427A
JP2012149427A JP2011008268A JP2011008268A JP2012149427A JP 2012149427 A JP2012149427 A JP 2012149427A JP 2011008268 A JP2011008268 A JP 2011008268A JP 2011008268 A JP2011008268 A JP 2011008268A JP 2012149427 A JP2012149427 A JP 2012149427A
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hollow extruded
fitting
hollow
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panel structure
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JP5649465B2 (en
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Hideaki Takahashi
秀明 高橋
Yasuyuki Kawashima
泰之 川島
Shinichi Wai
伸一 和井
Masashi Kokubo
正史 小久保
Yuji Kawabata
雄士 川畑
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Senqcia Corp
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Hitachi Metals Techno Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a panel structure capable of being molded using a small-sized extrusion device and being formed using a light-weight, strong and inexpensive extrusion shape member.SOLUTION: A fitting recessed part 22d and a step part 22f are formed on a hollow extrusion shape member 22, a fitting projection part 24d and a step part 24f are formed on a hollow extrusion shape member 24, the fitting projection part 24d is fitted to the fitting recessed part 22d, a part where the step part 22f and the step part 24f are engaged is joined by a frictional agitation joining means, and thus a panel structure 20 is formed by connecting the hollow extrusion shape members 22, 24. In each of the hollow extrusion shape members 22, 24, in the internal cavity of the extrusion cross section, reinforcing plate parts 34, 36, 46, 48 having thickness in a direction inclined relative to the thickness direction are formed along the length direction of the hollow extrusion shape members 22, 24.

Description

本発明は、例えば、フリーアクセスフロアに用いられるフロアパネル等のパネル構造に関するものである。   The present invention relates to a panel structure such as a floor panel used for a free access floor, for example.

フリーアクセスフロアに用いられるフロアパネルは、建築構造物のコンクリートを用いた基礎床面である第1の床部分の上方に空間を隔てて設けた第2の床部分を有して二重床構造を構成するフリーアクセスフロア構造において、その第2の床部分に用いられるものである。   A floor panel used for a free access floor has a double floor structure having a second floor portion provided above a first floor portion, which is a foundation floor surface using concrete of a building structure, with a space therebetween. Is used for the second floor portion of the free access floor structure.

従来のフロアパネルには、特許文献1の図1に示すように、内部に多数の補強板が一体成形された中空押出形材であって、その上面の平面形状が略正方形に形成された、支持脚3と共にフリーアクセスフロアを構成するフロアパネル2があった(特許文献1参照)。   In the conventional floor panel, as shown in FIG. 1 of Patent Document 1, a hollow extruded shape in which a number of reinforcing plates are integrally formed therein, and the planar shape of the upper surface is formed in a substantially square shape. There was a floor panel 2 that constitutes a free access floor together with the support legs 3 (see Patent Document 1).

この従来のフロアパネル2は、コンクリートを用いた基礎床面1上に立設された支持脚3により、その四隅部を下側から支持されるようになっていた。そしてフロアパネル2は、基礎床面1から上方に離れた水平面において、上から見て縦横二軸両方向に互いに隣合うように整列して、水平面上に複数配置されるようになっていた。   The conventional floor panel 2 is supported at its four corners from below by support legs 3 erected on a foundation floor surface 1 made of concrete. A plurality of floor panels 2 are arranged on the horizontal plane so as to be adjacent to each other in both the vertical and horizontal biaxial directions when viewed from above on a horizontal plane that is distant from the foundation floor 1.

特許文献1の図1に示すように、従来のフロアパネル2は、その下方に床下空間を形成するようになっており、この床下空間に電気機器のコード等を配線することができる二重床構造になっていた。   As shown in FIG. 1 of Patent Document 1, the conventional floor panel 2 is formed with an underfloor space below it, and a double floor in which a cord of an electric device or the like can be wired in the underfloor space. It was a structure.

そして、従来のフロアパネル2は、特許文献1の図2に示すように、互いに上下方向に対向するように所定の間隔をおいて上下に配置された平板状の天板部5及び底板部6と、これらの天板部5と底板部6とを連結するように、それらの間に垂直に立設された平板状の連結板部7とにより構成されていた。   As shown in FIG. 2 of Patent Document 1, the conventional floor panel 2 includes a flat plate-like top plate portion 5 and a bottom plate portion 6 that are arranged vertically at predetermined intervals so as to face each other in the vertical direction. In addition, the top plate portion 5 and the bottom plate portion 6 are connected to each other by a flat plate-like connecting plate portion 7 that is vertically provided between the top plate portion 5 and the bottom plate portion 6.

この従来のフロアパネル2は、アルミニウム製の中空押出形材により形成されており、その天板部5と底板部6と連結板部7とが押出し成形により一体的に形成されるようになっていた。   This conventional floor panel 2 is formed of a hollow extruded shape member made of aluminum, and the top plate portion 5, the bottom plate portion 6 and the connecting plate portion 7 are integrally formed by extrusion molding. It was.

このような従来のフロアパネル2は、アルミニウム製の中空構造になっており、その内部に複数の連結板部7を一体的に有する構造となっているため、その重量を軽いものにすることができると共に、その強度を強いものにすることができるようになっていた。   Such a conventional floor panel 2 has a hollow structure made of aluminum and has a structure in which a plurality of connecting plate portions 7 are integrally formed therein, so that the weight can be reduced. At the same time, it was possible to increase the strength.

また、上記従来のフロアパネル2は、その天板部5と底板部6と連結板部7とが押出し成形により一体的に形成されるようになっているため、その製作を容易なものにすることができるようになっていた。   Further, the conventional floor panel 2 has the top plate portion 5, the bottom plate portion 6 and the connecting plate portion 7 formed integrally by extrusion, so that the manufacture thereof is facilitated. I was able to do it.

実開平5−83168号公報Japanese Utility Model Publication No. 5-83168

しかしながら、上記特許文献1の図2に示す従来のフロアパネル2においては、その外形形状の全てを押出し成形により一体形成されるようになっていたので、このフロアパネル2の押出し成形に用いる押出装置の、押し出す材料を収納するコンテナや、材料押出し時に成形を行なうダイス(金型)等の各部品は、その外形寸法が大きなものになってしまう。   However, in the conventional floor panel 2 shown in FIG. 2 of the above-mentioned Patent Document 1, all of the outer shape is integrally formed by extrusion molding. Therefore, the extrusion apparatus used for extrusion molding of the floor panel 2 Each of the components such as the container for storing the material to be extruded and the die (mold) for forming at the time of material extrusion has a large outer dimension.

このため、フロアパネル2の押出し成形に用いる押出装置自体もその外形寸法が大きなものになってしまうため、小型な押出装置を使用する場合に比べてその装置や運転にかかる費用が著しく高くなってしまうという問題があった。   For this reason, since the extrusion apparatus itself used for extrusion molding of the floor panel 2 also has a large external dimension, the cost required for the apparatus and operation is significantly higher than when a small extrusion apparatus is used. There was a problem that.

そこで本発明は、上記問題点に鑑みて、小型の押出装置を用いて成形することができると共に、軽量で、強度を有し、かつ安価な押出し形材を用いて作ることができるパネル構造を提供することを課題とするものである。   Accordingly, in view of the above problems, the present invention provides a panel structure that can be formed using a small extrusion device and that can be made using an extruded profile that is lightweight, strong, and inexpensive. The issue is to provide.

上記課題を解決するために、本発明によるパネル構造は、
互いに隣合う側面部を有する角筒状の中空押出形材の一方は、前記側面部の上下方向一端部に嵌め込み凹部を有し、かつ前記側面部の上下方向他端部に互いに係合する段差部の一方が形成され、
前記互いに隣合う中空押出形材の他方は、前記側面部の上下方向一端部に嵌め込み凸部を有し、かつ前記側面部の上下方向他端部に互いに係合する段差部の他方が形成され、
前記嵌め込み凹部に前記嵌め込み凸部が嵌め込まれると共に、前記段差部の一方と他方が係合した部分を摩擦撹拌接合手段により接合することにより、前記互いに隣合う中空押出形材が接続されて形成されたパネル構造であって、
前記互いに隣合う中空押出形材のそれぞれは、その押出し断面の内部空洞中に、前記側面部の肉厚方向に対して傾いた方向の肉厚を有する補強板部が、前記中空押出形材の長さ方向に沿って形成されていることを特徴とするものである。
In order to solve the above problems, the panel structure according to the present invention is:
One of the rectangular tube-shaped hollow extruded shapes having side portions adjacent to each other has a recess fitted into one end portion in the vertical direction of the side surface portion and engages with the other end portion in the vertical direction of the side surface portion. One of the parts is formed,
The other of the adjacent hollow extruded profiles has a convex portion fitted at one end in the vertical direction of the side surface portion, and the other of the stepped portions that engage with each other at the other vertical end of the side surface portion. ,
The fitting projections are fitted into the fitting recesses, and the portions where one and the other of the stepped portions are engaged are joined by friction stir welding means, so that the adjacent hollow extruded profiles are connected to each other. Panel structure,
Each of the hollow extruded profiles adjacent to each other has a reinforcing plate portion having a thickness in a direction inclined with respect to the thickness direction of the side surface portion in an internal cavity of the extruded cross section of the hollow extruded profile. It is formed along the length direction.

また、本発明によるパネル構造は、
前記補強板部の幅方向の一端部が、前記互いに係合した段差部の近傍に接合されたことを特徴とするものである。
The panel structure according to the present invention is
One end portion in the width direction of the reinforcing plate portion is joined in the vicinity of the stepped portion engaged with each other.

また、上記課題を解決するために本発明によるパネル構造は、
互いに隣合う側面部を有する角筒状の中空押出形材の一方は、前記側面部の上下方向両端部に嵌め込み凹部又は嵌め込み凸部を有し、
前記互いに隣合う中空押出形材の他方は、前記側面部の上下方向両端部に嵌め込み凸部又は嵌め込み凹部を有し、
前記嵌め込み凹部に前記嵌め込み凸部が嵌め込まれると共に、前記側面部の上下方向下端部の嵌め込み凹部と前記嵌め込み凸部の嵌め込み部を摩擦撹拌接合手段により接合することにより、前記互いに隣合う中空押出形材が接続されて形成されたパネル構造であって、
前記互いに隣合う中空押出形材のそれぞれは、その押出し断面の内部空洞中に、前記側面部の肉厚方向に対して傾いた方向の肉厚を有する補強板部が、前記中空押出形材の長さ方向に沿って形成されていることを特徴とするものである。
In addition, in order to solve the above problems, the panel structure according to the present invention is
One of the rectangular tube-shaped hollow extruded shapes having side portions adjacent to each other has a concave portion or a convex portion to be fitted at both ends in the vertical direction of the side portion,
The other of the hollow extruded profiles adjacent to each other has a fitting protrusion or a fitting depression at both ends in the vertical direction of the side surface portion,
The fitting protrusions are fitted into the fitting recesses, and the adjacent hollow extrusions are formed by joining the fitting recesses at the lower end in the vertical direction of the side surface part and the fitting parts of the fitting protrusions by friction stir welding means. A panel structure formed by connecting materials,
Each of the hollow extruded profiles adjacent to each other has a reinforcing plate portion having a thickness in a direction inclined with respect to the thickness direction of the side surface portion in an internal cavity of the extruded cross section of the hollow extruded profile. It is formed along the length direction.

また、本発明によるパネル構造は、
前記補強板部の幅方向の一端部が、前記側面部の上下方向下端部の嵌め込み凹部と前記嵌め込み凸部の嵌め込み部の近傍に接合されたことを特徴とするものである。
The panel structure according to the present invention is
One end portion in the width direction of the reinforcing plate portion is joined in the vicinity of the fitting concave portion at the lower end portion in the vertical direction of the side surface portion and the fitting portion of the fitting convex portion.

このような本発明のパネル構造によれば、
互いに隣合う側面部を有する角筒状の中空押出形材の一方は、前記側面部の上下方向一端部に嵌め込み凹部を有し、かつ前記側面部の上下方向他端部に互いに係合する段差部の一方が形成され、
前記互いに隣合う中空押出形材の他方は、前記側面部の上下方向一端部に嵌め込み凸部を有し、かつ前記側面部の上下方向他端部に互いに係合する段差部の他方が形成され、
前記嵌め込み凹部に前記嵌め込み凸部が嵌め込まれると共に、前記段差部の一方と他方が係合した部分を摩擦撹拌接合手段により接合することにより、前記互いに隣合う中空押出形材が接続されて形成されたパネル構造であって、
前記互いに隣合う中空押出形材のそれぞれは、その押出し断面の内部空洞中に、前記側面部の肉厚方向に対して傾いた方向の肉厚を有する補強板部が、前記中空押出形材の長さ方向に沿って形成されていることにより、
小型の押出装置を用いて成形することができると共に、軽量で、強度を有し、かつ安価な押出し形材を用いてパネル構造を作ることができる。
According to such a panel structure of the present invention,
One of the rectangular tube-shaped hollow extruded shapes having side portions adjacent to each other has a recess fitted into one end portion in the vertical direction of the side surface portion and engages with the other end portion in the vertical direction of the side surface portion. One of the parts is formed,
The other of the adjacent hollow extruded profiles has a convex portion fitted at one end in the vertical direction of the side surface portion, and the other of the stepped portions that engage with each other at the other vertical end of the side surface portion. ,
The fitting projections are fitted into the fitting recesses, and the portions where one and the other of the stepped portions are engaged are joined by friction stir welding means, so that the adjacent hollow extruded profiles are connected to each other. Panel structure,
Each of the hollow extruded profiles adjacent to each other has a reinforcing plate portion having a thickness in a direction inclined with respect to the thickness direction of the side surface portion in an internal cavity of the extruded cross section of the hollow extruded profile. By being formed along the length direction,
A panel structure can be formed using an extruded profile that can be molded using a small-sized extrusion apparatus and is lightweight, strong, and inexpensive.

本発明の第1の実施の形態に係るパネル構造を備えた、フリーアクセスフロアのフロアパネル20の簡略斜視図である。It is a simplified perspective view of the floor panel 20 of the free access floor provided with the panel structure according to the first embodiment of the present invention. 図1における中空押出形材22の正面断面図である。It is front sectional drawing of the hollow extrusion shape member 22 in FIG. 図1における中空押出形材24の正面断面図である。It is front sectional drawing of the hollow extrusion shape member 24 in FIG. フロアパネル20の製造方法を説明するための図であって、中空押出形材22の嵌め込み凹部22dに中空押出形材24の嵌め込み凸部24dの先端部を嵌合させた状態を示す正面断面図である。It is a figure for demonstrating the manufacturing method of the floor panel 20, Comprising: Front sectional drawing which shows the state which fitted the front-end | tip part of the fitting convex part 24d of the hollow extrusion shape member 24 to the fitting recessed part 22d of the hollow extrusion shape member 22. It is. やはりフロアパネル20の製造方法を説明するための図であって、中空押出形材22の嵌め込み凹部22dに中空押出形材24の嵌め込み凸部24dを嵌合させると共に、段差部22fに段差部24fを係合させた状態を示す正面断面図である。It is also a figure for demonstrating the manufacturing method of the floor panel 20, Comprising: The fitting convex part 24d of the hollow extrusion shape member 24 is made to fit in the fitting recessed part 22d of the hollow extrusion shape member 22, and the level difference part 24f is set to the level difference part 22f. It is front sectional drawing which shows the state which engaged. 本発明の第2の実施の形態に係るパネル構造における中空押出形材62の正面断面図である。It is a front sectional view of hollow extrusion section 62 in the panel structure concerning a 2nd embodiment of the present invention. 本発明の第2の実施の形態に係るパネル構造における中空押出形材64の正面断面図である。It is front sectional drawing of the hollow extrusion shape member 64 in the panel structure which concerns on the 2nd Embodiment of this invention. 本発明の第2の実施の形態に係るパネル構造を備えた、フリーアクセスフロアのフロアパネル60の摩擦撹拌接合前の状態を示す正面断面図である。It is front sectional drawing which shows the state before the friction stir welding of the floor panel 60 of the free access floor provided with the panel structure which concerns on the 2nd Embodiment of this invention.

以下、本発明のパネル構造を実施するための形態について、図面に基づいて具体的に説明する。   Hereinafter, the form for implementing the panel structure of this invention is demonstrated concretely based on drawing.

図1ないし図5は、本発明の第1の実施の形態に係るパネル構造を備えた、フリーアクセスフロアのフロアパネル20について説明するために参照する図である。なお、図1においては、図が煩雑になることを防ぐために、後述する補強板部34,36,46,48を省略して簡略に示している。   FIGS. 1 to 5 are views referred to for describing a floor panel 20 of a free access floor having a panel structure according to the first embodiment of the present invention. In FIG. 1, in order to prevent the drawing from becoming complicated, reinforcing plate portions 34, 36, 46, and 48 to be described later are simply omitted.

図1に示すように、フロアパネル20は、略矩形の角筒状の2つの中空押出形材22,24の互いに隣合う側面部30,42同士が互いに嵌合されると共に、互いに接合されることにより構成されている。   As shown in FIG. 1, the floor panel 20 is joined to each other while the adjacent side surface portions 30 and 42 of the two hollow extruded shapes 22 and 24 having a substantially rectangular rectangular tube shape are fitted to each other. It is constituted by.

すなわち、フロアパネル20は、図1に示すように、中空押出形材22,24それぞれの互いに隣合う側面部30,42の図中上部において、中空押出形材22の嵌め込み凹部22dに、中空押出形材24の嵌め込み凸部24dが嵌め込まれて嵌合するようになっている。   That is, as shown in FIG. 1, the floor panel 20 has a hollow extruded shape 22 in the fitting recessed portion 22 d of the hollow extruded shape 22 in the upper part of the side surfaces 30 and 42 of the hollow extruded shapes 22 and 24 adjacent to each other. The fitting convex part 24d of the shape member 24 is fitted and fitted.

また図1に示す、上記互いに隣合う側面部30,42の図中下部において、図2に示す中空押出形材22の段差部22fと、図3に示す中空押出形材24の段差部24fとが互いに接触して係合するようになっている。   Further, in the lower part of the side portions 30 and 42 adjacent to each other shown in FIG. 1, a step 22f of the hollow extruded shape 22 shown in FIG. 2 and a step 24f of the hollow extruded shape 24 shown in FIG. Are in contact with and engaged with each other.

中空押出形材22,24は、互いに係合した段差部22f,24f間を摩擦撹拌接合手段(Friction Stir Welding)により互いに接合されるようになっている。図1における黒い半円部分が、摩擦撹拌接合手段により接合された接合部Wである。   The hollow extruded shape members 22 and 24 are joined to each other by the friction stir welding means between the stepped portions 22f and 24f engaged with each other. A black semicircular portion in FIG. 1 is a joint W joined by friction stir welding means.

ここで、摩擦撹拌接合手段とは、例えば、特許第2712838号,第2792233号公報に記載されているように、略円柱形状の部分と、その先端部から同一軸線方向に突出するネジ棒状の突起部(以下、プローブと呼ぶ)とを有する工具の、そのプローブを軸線回りに回転させながらその先端を接合部材同士の接合部分を含む面、又はその近傍部の面にほぼ垂直に押し付ける。   Here, the friction stir welding means, for example, as described in Japanese Patent Nos. 2712838 and 2792233, is a substantially cylindrical portion and a screw rod-like projection protruding from the tip portion in the same axial direction. The tip of a tool having a portion (hereinafter referred to as a probe) is pressed almost perpendicularly to the surface including the joining portion between the joining members or the surface in the vicinity thereof while rotating the probe around the axis.

このときの、回転するプローブと接合部材との間の摩擦熱で、接合部材を液状化手前まで軟化させると共に、この軟化した接合部材の肉厚内に前記プローブがその先端部から入り込んで、接合部材同士間において回転するプローブの撹拌作用により塑性流動を生じさせ、接合部材同士の接合部分の金属組織を練り混ぜることにより一体化させた後、温度降下により固化するような接合手段をいう。   At this time, the frictional heat between the rotating probe and the joining member softens the joining member just before liquefaction, and the probe enters the thickness of the softened joining member from its tip, This means a joining means in which plastic flow is generated by the stirring action of the probe rotating between the members, and the metal structure of the joining portion between the joining members is integrated by kneading and then solidified by a temperature drop.

このような接合手段により、フロアパネル20は、中空押出形材22,24の側面部30,42の下端部同士が一体的に接合されており、その上面全体の平面形状が略正方形になっている。   By such joining means, the floor panel 20 has the lower end portions of the side surface portions 30 and 42 of the hollow extruded shape members 22 and 24 integrally joined together, and the planar shape of the entire upper surface thereof is substantially square. Yes.

そして、本実施の形態に係るパネル構造を備えたフロアパネル20は、前記従来のフロアパネル2と同様に、コンクリートを用いた基礎床面1上に立設された支持脚3により、その四隅部を下側から支持されるようになっている。そして、このフロアパネル20は、基礎床面1から上方に離れた水平面上の縦横二軸両方向に互いに隣合うように整列して、複数配置されるようになっている。   And the floor panel 20 provided with the panel structure which concerns on this Embodiment is the four corners by the supporting leg 3 standingly arranged on the foundation floor surface 1 using concrete similarly to the said conventional floor panel 2. FIG. Is supported from below. A plurality of the floor panels 20 are arranged so as to be adjacent to each other in both vertical and horizontal biaxial directions on a horizontal plane that is spaced upward from the foundation floor surface 1.

フロアパネル20の中空押出形材22は、図2に示すように、アルミニウム製の略角筒状の押出形材により形成されており、その押出し方向(図中紙面垂直方向)に所定の長さを有していて、その押出し方向に垂直な断面は略矩形の中空状に形成されている。   As shown in FIG. 2, the hollow extruded shape member 22 of the floor panel 20 is formed of an aluminum substantially rectangular tube-shaped extruded shape member, and has a predetermined length in the extrusion direction (perpendicular to the paper surface in the figure). The cross section perpendicular to the direction of extrusion is formed in a substantially rectangular hollow shape.

すなわち、中空押出形材22は、図2中互いに上下方向に対向するように所定の間隔をおいて、上下に配置された平板状の天板部26及び底板部28と、天板部26と底板部28の幅方向(図中左右方向)両端部それぞれを連結するように、それらの間に垂直に伸びる平板状の側面部30,32とを備えている。   That is, the hollow extruded shape member 22 includes a flat plate-like top plate portion 26 and a bottom plate portion 28 which are arranged vertically at predetermined intervals so as to face each other in FIG. In order to connect both end portions in the width direction (left-right direction in the figure) of the bottom plate portion 28, flat plate-like side portions 30 and 32 extending vertically are provided therebetween.

そして中空押出形材22は、図2に示すようにその内部に、その底板部28と側面部30とを連結する隅部と、天板部26の図中左右中央部との間に、その幅方向両端部が連結された補強板部34を備えるようになっている。また、中空押出形材22はその内部に、その底板部28と側面部32とを連結する隅部と、天板部26の図中左右中央部との間に、その幅方向両端部が連結された補強板部36を備えるようになっている。   As shown in FIG. 2, the hollow extruded shape member 22 has a corner between the bottom plate portion 28 and the side surface portion 30 and a left and right central portion of the top plate portion 26 in the drawing. Reinforcing plate portions 34 having both ends in the width direction connected thereto are provided. Further, the hollow extruded shape member 22 is connected at both ends in the width direction between the corner portion connecting the bottom plate portion 28 and the side surface portion 32 and the left and right central portion of the top plate portion 26 in the drawing. The reinforcing plate portion 36 is provided.

そして、図2に示すように、中空押出形材22は、その天板部26と側面部30とを連結する隅部に、天板部26を水平方向に延長して側面部30より外側に突出したその先端部が底板部28側に向かって折れ曲がることにより、嵌め込み凹部22dが形成されている。   Then, as shown in FIG. 2, the hollow extruded shape member 22 extends outward from the side surface portion 30 by extending the top plate portion 26 in the horizontal direction at the corner portion connecting the top plate portion 26 and the side surface portion 30. The projecting tip part is bent toward the bottom plate part 28 side, so that a fitting recess 22d is formed.

また中空押出形材22は、図2に示すように、その底板部28と側面部30とを連結する隅部に、その底板部28の底面22bから天板部26側に向かって少し凹んだ凹み面22cが形成されている。   Further, as shown in FIG. 2, the hollow extruded shape member 22 is slightly recessed from the bottom surface 22b of the bottom plate portion 28 toward the top plate portion 26 side at the corner portion connecting the bottom plate portion 28 and the side surface portion 30. A recessed surface 22c is formed.

そして、中空押出形材22は、その底板部28と側面部30とを連結する隅部に、その側面部30より外側に突き出した突出部22eが形成されていると共に、その突出部22eの下部に段差部22fが形成されている。   The hollow extruded shape member 22 has a protruding portion 22e protruding outward from the side surface portion 30 at a corner portion connecting the bottom plate portion 28 and the side surface portion 30, and a lower portion of the protruding portion 22e. A step portion 22f is formed on the surface.

そして、中空押出形材22は、押出し成形により上述するような断面形状に一体的に形成されるようになっている。   The hollow extruded shape member 22 is integrally formed in the cross-sectional shape as described above by extrusion molding.

図1,図3に示すフロアパネル20の中空押出形材24は、図2に示す中空押出形材22と同様に、アルミニウム製の中空状の押出形材により形成されており、その押出し方向(図中紙面垂直方向)に所定の長さを有しており、その押出し方向に垂直な断面は略矩形状に形成されている。   The hollow extruded shape member 24 of the floor panel 20 shown in FIGS. 1 and 3 is formed of a hollow extruded shape member made of aluminum, like the hollow extruded shape member 22 shown in FIG. It has a predetermined length in the direction perpendicular to the paper surface in the figure, and the cross section perpendicular to the extrusion direction is formed in a substantially rectangular shape.

すなわち、図3に示す中空押出形材24は、図2に示す中空押出形材22と同様に、互いに対向するように上下に配置された天板部38及び底板部40と、天板部38と底板部40の幅方向両端部それぞれを連結するように、それらの間に垂直に伸びる平板状の側面部42,44とを備えている。   That is, the hollow extruded profile 24 shown in FIG. 3 is similar to the hollow extruded profile 22 shown in FIG. 2, and includes a top plate portion 38 and a bottom plate portion 40 arranged vertically so as to face each other, and a top plate portion 38. And flat side portions 42 and 44 extending vertically between the two end portions in the width direction of the bottom plate portion 40.

また、図3に示す中空押出形材24は、図2に示す中空押出形材22の補強板部34,36と同様の補強板部48,46を備えるようになっている。   3 is provided with reinforcing plate portions 48 and 46 similar to the reinforcing plate portions 34 and 36 of the hollow extruded shape member 22 shown in FIG.

そして、図3に示すように、中空押出形材24は、その天板部38と側面部42とを連結する隅部に、側面部42より外側に突出したその先端部が天板部38側に向かって折れ曲がることにより、嵌め込み凸部24dが形成されている。そして、この中空押出形材24の嵌め込み凸部24dは、中空押出形材22の嵌め込み凹部22dに嵌合するようになっている。   As shown in FIG. 3, the hollow extruded shape member 24 has a tip portion projecting outward from the side surface portion 42 at the corner portion connecting the top plate portion 38 and the side surface portion 42, and the top plate portion 38 side. The fitting convex part 24d is formed by being bent toward. Then, the fitting convex portion 24 d of the hollow extruded shape member 24 is adapted to fit into the fitting concave portion 22 d of the hollow extruded shape member 22.

中空押出形材24は、その底板部40と側面部42とを連結する隅部に、その側面部42より外側に突き出した突出部24eが形成されている。そして、この突出部24eの下面に、底板部40の底面24bから天板部38側に向かって少し凹んだ凹み面24cが形成されている。   The hollow extruded shape member 24 is formed with a protruding portion 24e protruding outward from the side surface portion 42 at a corner portion connecting the bottom plate portion 40 and the side surface portion 42. A concave surface 24c is formed on the lower surface of the projecting portion 24e. The concave surface 24c is slightly recessed from the bottom surface 24b of the bottom plate portion 40 toward the top plate portion 38 side.

中空押出形材24は、その突出部24eの上部に段差部24fが形成されるようになっている。この中空押出形材24の段差部24fは、その嵌め込み凸部24dが中空押出形材22の嵌め込み凹部22dに嵌合した際に、中空押出形材22の段差部22fに接触して係合するようになっている。そして、中空押出形材24の突出部24eの先端が、中空押出形材22の段差部22fから直角の当接面22gに当接するようになっている。   The hollow extruded shape member 24 is formed with a stepped portion 24f at the top of the protruding portion 24e. The stepped portion 24f of the hollow extruded shape member 24 comes into contact with and engages with the stepped portion 22f of the hollow extruded shape member 22 when the fitting convex portion 24d is fitted into the fitting recessed portion 22d of the hollow extruded shape member 22. It is like that. And the front-end | tip of the protrusion part 24e of the hollow extrusion shape member 24 contact | abuts to the contact surface 22g at right angles from the level | step-difference part 22f of the hollow extrusion shape member 22. FIG.

そして、中空押出形材24は、押出し成形により上述するような断面形状に一体的に形成されるようになっている。   The hollow extruded shape member 24 is integrally formed in the cross-sectional shape as described above by extrusion molding.

図4及び図5は、本発明の第1の実施の形態に係るフロアパネル20の製造方法について説明するために参照する図である。   4 and 5 are views referred to for explaining a method of manufacturing the floor panel 20 according to the first embodiment of the present invention.

図4に示すように、中空押出形材22,24を、それらの上面22a,24aが図中下側に位置し、それらの下面22b,24bが図中上側に位置するように上下逆さまに配置して、中空押出形材22の嵌め込み凹部22dに、中空押出形材24の嵌め込み凸部24dの先端部を嵌合させる。   As shown in FIG. 4, the hollow extruded profiles 22, 24 are arranged upside down so that their upper surfaces 22a, 24a are located on the lower side in the figure and their lower surfaces 22b, 24b are located on the upper side in the figure. And the front-end | tip part of the fitting convex part 24d of the hollow extrusion shape member 24 is made to fit in the fitting recessed part 22d of the hollow extrusion shape member 22. FIG.

そして、中空押出形材24の嵌め込み凸部24dの先端部が、中空押出形材22の嵌め込み凹部22dに完全に入り込むように、中空押出形材24を図中時計回り方向に回動させる。   Then, the hollow extruded shape member 24 is rotated in the clockwise direction in the drawing so that the distal end portion of the fitting convex portion 24d of the hollow extruded shape member 24 completely enters the fitting concave portion 22d of the hollow extruded shape member 22.

すると、図5に示すように、中空押出形材22の嵌め込み凹部22dに中空押出形材24の嵌め込み凸部24dが完全に嵌合する。このとき、中空押出形材22の段差部22fと中空押出形材24の段差部24fとは互いに接触して係合するようになっている。   Then, as shown in FIG. 5, the fitting convex portion 24 d of the hollow extruded shape member 24 is completely fitted into the fitting concave portion 22 d of the hollow extruded shape member 22. At this time, the stepped portion 22f of the hollow extruded shape member 22 and the stepped portion 24f of the hollow extruded shape member 24 are brought into contact with and engaged with each other.

またこのとき、中空押出形材24の突出部24eの先端が中空押出形材22の段差部22fから直角の当接面22gに突き当たって接触するようになっており、このことにより中空押出形材22の上面22aと中空押出形材24の上面24aが同一平面上に連続すると共に、中空押出形材22の底面22bと中空押出形材24の底面24bも同一平面上に連続するようになっている。   Further, at this time, the tip of the protruding portion 24e of the hollow extruded shape member 24 comes into contact with the contact surface 22g at a right angle from the step portion 22f of the hollow extruded shape member 22, and thereby the hollow extruded shape member The upper surface 22a of 22 and the upper surface 24a of the hollow extruded profile 24 are continuous on the same plane, and the bottom surface 22b of the hollow extruded profile 22 and the bottom surface 24b of the hollow extruded profile 24 are also continued on the same plane. Yes.

また、図5に示すように、中空押出形材22の凹み面22cと中空押出形材24の凹み面24cが同一平面上に隣合って配置されている。そして、段差部22f,24fが重なって互いに接触した部分に対応する凹み面22c,24cの互いの隣接部に、摩擦撹拌接合手段の工具50のプローブ50aをその軸線回りに回転させながら上方からほぼ垂直に押し付ける。   Further, as shown in FIG. 5, the recessed surface 22c of the hollow extruded shape member 22 and the recessed surface 24c of the hollow extruded shape member 24 are arranged adjacent to each other on the same plane. Then, the probe 50a of the tool 50 of the friction stir welding means is rotated from the upper side to the adjacent part of the concave surfaces 22c, 24c corresponding to the portions where the stepped portions 22f, 24f are in contact with each other. Press vertically.

このとき、回転するプローブ50aと中空押出形材22,24との間の摩擦熱で、中空押出形材22,24を液状化手前まで軟化させると共に、この軟化した中空押出形材22,24の肉厚内にプローブ50aがその先端部から入り込んで、中空押出形材22,24間において回転するプローブ50aの撹拌作用により塑性流動を生じさせ、中空押出形材22,24の接合部分の金属組織を練り混ぜることにより一体化させた後、温度降下により固化する。   At this time, the frictional heat between the rotating probe 50a and the hollow extruded profiles 22, 24 softens the hollow extruded profiles 22, 24 to the level before liquefaction, and the softened hollow extruded profiles 22, 24 The probe 50a enters the wall thickness from the tip thereof, and a plastic flow is generated by the stirring action of the probe 50a rotating between the hollow extruded profiles 22, 24, and the metal structure of the joined portion of the hollow extruded profiles 22, 24 After mixing, knead and solidify by temperature drop.

このような摩擦撹拌接合手段による接合により、図1に示すように、中空押出形材22,24が一体的に接合されて、それぞれの上面22a,24aが上にくるような本来の状態に配置されて、上面全体の平面形状が略正方形であるフロアパネル20を構成するようになっている。   As shown in FIG. 1, the hollow extruded shape members 22 and 24 are integrally joined by such friction stir welding means, and are arranged in an original state in which the upper surfaces 22 a and 24 a are on the upper side. Thus, the floor panel 20 is configured in which the planar shape of the entire top surface is substantially square.

このように、2つの中空押出形材22,24により1つのフロアパネル20を構成するようになっているため、フロアパネル20を構成する、中空押出形材22,24の押出し成形に用いる押出装置は、前記従来のフロアパネル2の押出し成形に用いる押出装置の略半分位の小型なもので済ますことができる。   Thus, since one floor panel 20 is comprised by the two hollow extrusion shape members 22 and 24, the extrusion apparatus used for the extrusion molding of the hollow extrusion shape members 22 and 24 which comprise the floor panel 20 Can be as small as about half of the extrusion apparatus used for extrusion molding of the conventional floor panel 2.

また、中空押出形材22,24は、アルミニウム製の中空構造になっているため、その重量を軽いものにすることができると共に、それらの互いに隣合う側面部30,42同士を嵌合及び接合する構造となっていて、それぞれは補強板部34,36及び補強板部46,48を有しているので、その強度を強いものにすることができる。   Moreover, since the hollow extruded shape members 22 and 24 have a hollow structure made of aluminum, the weight can be reduced, and the side portions 30 and 42 adjacent to each other can be fitted and joined together. Since each has the reinforcing plate portions 34 and 36 and the reinforcing plate portions 46 and 48, the strength can be increased.

また、中空押出形材22,24は、それぞれ凹み面22c,24cの互いの隣接部から摩擦撹拌接合手段により接合されるようになっているため、接合部やその近傍が凹み面22c,24cよりも多少盛り上がったりしても、それらの底板部28,40より外側にはみ出さない限り支障を来たすことはない。このため、フロアパネル20は、中空押出形材22,24の接合部W(図1参照)の周辺近傍に研削や研磨等といった余計な加工をしなくても済む。   Further, since the hollow extruded shape members 22 and 24 are joined by friction stir welding means from the adjacent portions of the concave surfaces 22c and 24c, the joint portion and its vicinity are from the concave surfaces 22c and 24c. Even if it rises somewhat, it will not cause any trouble unless it protrudes outside the bottom plate portions 28 and 40. For this reason, the floor panel 20 does not require extra processing such as grinding or polishing in the vicinity of the periphery of the joint W (see FIG. 1) of the hollow extruded shape members 22 and 24.

また、中空押出形材22,24それぞれの互いに隣合う側面部30,42の上部は互いに、摩擦撹拌接合手段による接合ではなくて単に嵌合されているだけのため、摩擦撹拌接合手段による接合箇所は互いに隣合う側面部30,42の下部だけで、上部には行われないので、摩擦撹拌接合手段による接合箇所をできるだけ少なくすることができる。   Further, the upper portions of the side surface portions 30 and 42 of the hollow extruded shape members 22 and 24 that are adjacent to each other are not simply joined to each other by the friction stir welding means, but are merely fitted to each other. Since only the lower part of the side parts 30 and 42 adjacent to each other is not performed on the upper part, the number of joints by the friction stir welding means can be minimized.

また、中空押出形材22,24それぞれは、押出し成形により形成された精度の高い平面状態をそのままフロアパネル20の上面として利用することができる。   Further, each of the hollow extruded shape members 22 and 24 can use a highly accurate planar state formed by extrusion molding as it is as the upper surface of the floor panel 20.

また、フロアパネル20は、中空押出形材22,24それぞれの互いに隣合う側面部30,42において互いを接合するようになっており、さらに中空押出形材22,24に補強板部34,46がそれぞれ形成されているため、中空押出形材22,24の突出部22e,24eそれぞれの、側面部30,42から突出する長さ寸法が短くとも、中空押出形材22,24の段差部22f,24fが、摩擦接合手段による接合時に下方に向って加えられる押圧力に耐えることができるようになっている。   Further, the floor panel 20 is configured to be joined to each other at the side surface portions 30 and 42 adjacent to each other of the hollow extruded shape members 22 and 24, and the reinforcing plate portions 34 and 46 are joined to the hollow extruded shape members 22 and 24. Therefore, even if the length of the protrusions 22e and 24e of the hollow extruded profiles 22 and 24 protruding from the side surfaces 30 and 42 is short, the step 22f of the hollow extruded profiles 22 and 24 is short. , 24f can withstand the pressing force applied downward during the joining by the friction joining means.

この場合さらに、中空押出形材22,24の段差部22f,24fそれぞれは、中空押出形材22,24の互いに隣合う側面部30,42の近傍かつ、補強部材34,46の近傍に配置されるため、摩擦接合手段による接合時における段差部22f,24fの破損や変形を防止することができ、中空押出形材22,24を確実に接合することができる。   Further, in this case, the step portions 22f and 24f of the hollow extruded profiles 22 and 24 are respectively disposed in the vicinity of the side portions 30 and 42 adjacent to each other of the hollow extruded profiles 22 and 24 and in the vicinity of the reinforcing members 34 and 46. Therefore, the stepped portions 22f and 24f at the time of joining by the friction joining means can be prevented from being damaged or deformed, and the hollow extruded shape members 22 and 24 can be reliably joined.

以上に説明したように、本実施の形態に係るフロアパネル20によれば、小型の押出装置を用いて成形することができると共に、軽量で、強度を有し、かつ安価な押出し形材を用いてパネル構造を作ることができる。   As described above, according to the floor panel 20 according to the present embodiment, it is possible to form using a small extrusion device, and to use an extruded shape that is lightweight, strong, and inexpensive. Panel structure.

図6ないし図8は、本発明の第2の実施の形態に係るパネル構造を備えた、フリーアクセスフロアのフロアパネル60について説明するために参照する図である。前記第1の実施の形態における同一の部品には同一の符号を付し、重複する構成の説明はなるべく省略する。   6 to 8 are views referred to for explaining a floor panel 60 of a free access floor having a panel structure according to the second embodiment of the present invention. The same parts in the first embodiment are denoted by the same reference numerals, and the description of the overlapping configuration is omitted as much as possible.

図6に示すように、本実施の形態における中空押出形材62は、その底板部28と側面部30とを連結する隅部に、前記第1の実施の形態における中空押出形材22の突出部22e及び段差部22fの代わりに、前記中空押出形材22の嵌め込み凹部22dと同じ形状の嵌め込み凹部62aが形成されている点において、図2に示す前記第1の実施の形態における中空押出形材22と異なるものである。   As shown in FIG. 6, the hollow extruded shape member 62 in the present embodiment has a protruding portion of the hollow extruded shape member 22 in the first embodiment at a corner portion connecting the bottom plate portion 28 and the side surface portion 30. The hollow extruded shape in the first embodiment shown in FIG. 2 is that a fitting recess 62a having the same shape as the fitting recess 22d of the hollow extruded shape member 22 is formed instead of the portion 22e and the stepped portion 22f. This is different from the material 22.

また、図7に示すように、本実施の形態における中空押出形材64は、その底板部40と側面部42とを連結する隅部に、前記第1の実施の形態における中空押出形材24の突出部24e及び段差部24fの代わりに、前記中空押出形材24の嵌め込み凸部24dと同じ形状の嵌め込み凸部64aが形成されるようになっている点において、図3に示す前記第1の実施の形態における中空押出形材24と異なるものである。   Further, as shown in FIG. 7, the hollow extruded shape member 64 in the present embodiment has a hollow extruded shape member 24 in the first embodiment at a corner portion connecting the bottom plate portion 40 and the side surface portion 42. Instead of the protruding portion 24e and the stepped portion 24f, a fitting convex portion 64a having the same shape as the fitting convex portion 24d of the hollow extruded shape member 24 is formed. This is different from the hollow extruded shape member 24 in the embodiment.

このため、図8に示すように、本実施の形態に係るパネル構造を備えたフリーアクセスフロアのフロアパネル60は、中空押出形材62の嵌め込み凹部22dに中空押出形材64の嵌め込み凸部24dが嵌合した際に同時に、中空押出形材62の嵌め込み凹部62aに中空押出形材64の嵌め込み凸部64aが嵌合するようになっている。   For this reason, as shown in FIG. 8, the floor panel 60 of the free access floor provided with the panel structure according to the present embodiment has the fitting convex portion 24d of the hollow extruded shape member 64 in the fitting concave portion 22d of the hollow extruded shape member 62. At the same time, the fitting convex portion 64a of the hollow extruded shape member 64 is fitted into the fitting concave portion 62a of the hollow extruded shape member 62.

そして、図8に示すように、中空押出形材62,64は、嵌め込み凹部62aと嵌め込み凸部64aとが互いに嵌合した部分に対応する凹み面22c,24cの互いの隣接部が、摩擦接合手段による接合により一体的に接合されて、上面全体の平面形状が略正方形であるフロアパネル60を構成するようになっている。   As shown in FIG. 8, the hollow extruded shape members 62 and 64 are configured such that the adjacent portions of the concave surfaces 22 c and 24 c corresponding to the portions where the fitting concave portions 62 a and the fitting convex portions 64 a are fitted to each other are friction bonded. The floor panel 60 which is integrally joined by joining by means and has a substantially square planar shape on the entire upper surface is configured.

このような本実施の形態に係るフロアパネル60によっても、前記第1の実施の形態に係るフロアパネル20と同様の効果、すなわち、小型の押出装置を用いて成形することができると共に、軽量で、強度を有し、かつ安価な押出し形材を用いてパネル構造を作ることができる。   The floor panel 60 according to the present embodiment can be molded using the same effect as the floor panel 20 according to the first embodiment, that is, using a small extrusion device, and is lightweight. A panel structure can be made using an extruded profile that is strong and inexpensive.

なお、前記第1の実施の形態に係るフロアパネル20においては、その上面の平面形状が全体として略正方形になっていたが、その上面の平面形状は正方形に限定されず、長方形や他の形状に形成されるようになっていてもよい。   In addition, in the floor panel 20 according to the first embodiment, the planar shape of the upper surface is substantially square as a whole, but the planar shape of the upper surface is not limited to a square, and is rectangular or other shapes. May be formed.

また、前記第1の実施の形態における中空押出形材22,24は、アルミニウム製の中空押出形材により形成されていたが、アルミニウム製の中空押出形材と同様に軽量で強度を有し、互いを接合することができるものであれば、他の製法や他の材料を用いてもよい。   In addition, the hollow extruded profiles 22 and 24 in the first embodiment are formed of aluminum hollow extruded profiles, but are light and strong like aluminum hollow extruded profiles, Other manufacturing methods and other materials may be used as long as they can be joined to each other.

また、前記第1の実施の形態に係るフロアパネル20においては、予め所定の長さを有する中空押出形材22,24同士を接合するようになっていたが、中空押出形材22,24の側面部30,42同士を接合した後に、フロアパネル20をその幅方向に切断することにより、その長さが所定の長さに定まるようになっていてもよい。   Further, in the floor panel 20 according to the first embodiment, the hollow extruded shapes 22 and 24 having a predetermined length are joined together in advance. After joining the side surface parts 30 and 42, the floor panel 20 may be cut | disconnected in the width direction, and the length may be decided to predetermined length.

20 フロアパネル
22 中空押出形材
22a 上面
22b 底面
22c 凹み面
22d 嵌め込み凹部
22e 突出部
22f 段差部
22g 当接面
24 中空押出形材
24a 上面
24b 底面
24c 凹み面
24d 嵌め込み凸部
24e 突出部
24f 段差部
26 天板部
28 底板部
30,32 側面部
34,36 補強板部
38 天板部
40 底板部
42,44 側面部
46,48 補強板部
50 工具
50a 突起部
60 フロアパネル
62 中空押出形材
62a 嵌め込み凹部
64 中空押出形材
64a 嵌め込み凸部
W 接合部
20 floor panel 22 hollow extruded shape 22a upper surface 22b bottom surface 22c recessed surface 22d fitting recessed portion 22e protruding portion 22f stepped portion 22g contact surface 24 hollow extruded shape member 24a upper surface 24b bottom surface 24c recessed surface 24d fitting projected portion 24e protruding portion 24f 26 Top plate portion 28 Bottom plate portion 30, 32 Side surface portion 34, 36 Reinforcement plate portion 38 Top plate portion 40 Bottom plate portion 42, 44 Side surface portion 46, 48 Reinforcement plate portion 50 Tool 50a Protruding portion 60 Floor panel 62 Hollow extruded member 62a Insertion concave part 64 Hollow extruded shape member 64a Insertion convex part W Joint part

Claims (4)

互いに隣合う側面部を有する角筒状の中空押出形材の一方は、前記側面部の上下方向一端部に嵌め込み凹部を有し、かつ前記側面部の上下方向他端部に互いに係合する段差部の一方が形成され、
前記互いに隣合う中空押出形材の他方は、前記側面部の上下方向一端部に嵌め込み凸部を有し、かつ前記側面部の上下方向他端部に互いに係合する段差部の他方が形成され、
前記嵌め込み凹部に前記嵌め込み凸部が嵌め込まれると共に、前記段差部の一方と他方が係合した部分を摩擦撹拌接合手段により接合することにより、前記互いに隣合う中空押出形材が接続されて形成されたパネル構造であって、
前記互いに隣合う中空押出形材のそれぞれは、その押出し断面の内部空洞中に、前記側面部の肉厚方向に対して傾いた方向の肉厚を有する補強板部が、前記中空押出形材の長さ方向に沿って形成されていることを特徴とするパネル構造。
One of the rectangular tube-shaped hollow extruded shapes having side portions adjacent to each other has a recess fitted into one end portion in the vertical direction of the side surface portion and engages with the other end portion in the vertical direction of the side surface portion. One of the parts is formed,
The other of the adjacent hollow extruded profiles has a convex portion fitted at one end in the vertical direction of the side surface portion, and the other of the stepped portions that engage with each other at the other vertical end of the side surface portion. ,
The fitting projections are fitted into the fitting recesses, and the portions where one and the other of the stepped portions are engaged are joined by friction stir welding means, so that the adjacent hollow extruded profiles are connected to each other. Panel structure,
Each of the hollow extruded profiles adjacent to each other has a reinforcing plate portion having a thickness in a direction inclined with respect to the thickness direction of the side surface portion in an internal cavity of the extruded cross section of the hollow extruded profile. A panel structure characterized by being formed along a length direction.
前記補強板部の幅方向の一端部が、前記互いに係合した段差部の近傍に接合されたことを特徴とする請求項1に記載のパネル構造。   The panel structure according to claim 1, wherein one end portion of the reinforcing plate portion in the width direction is joined in the vicinity of the stepped portion engaged with each other. 互いに隣合う側面部を有する角筒状の中空押出形材の一方は、前記側面部の上下方向両端部に嵌め込み凹部又は嵌め込み凸部を有し、
前記互いに隣合う中空押出形材の他方は、前記側面部の上下方向両端部に嵌め込み凸部又は嵌め込み凹部を有し、
前記嵌め込み凹部に前記嵌め込み凸部が嵌め込まれると共に、前記側面部の上下方向下端部の嵌め込み凹部と前記嵌め込み凸部の嵌め込み部を摩擦撹拌接合手段により接合することにより、前記互いに隣合う中空押出形材が接続されて形成されたパネル構造であって、
前記互いに隣合う中空押出形材のそれぞれは、その押出し断面の内部空洞中に、前記側面部の肉厚方向に対して傾いた方向の肉厚を有する補強板部が、前記中空押出形材の長さ方向に沿って形成されていることを特徴とするパネル構造。
One of the rectangular tube-shaped hollow extruded shapes having side portions adjacent to each other has a concave portion or a convex portion to be fitted at both ends in the vertical direction of the side portion,
The other of the hollow extruded profiles adjacent to each other has a fitting protrusion or a fitting depression at both ends in the vertical direction of the side surface portion,
The fitting protrusions are fitted into the fitting recesses, and the adjacent hollow extrusions are formed by joining the fitting recesses at the lower end in the vertical direction of the side surface part and the fitting parts of the fitting protrusions by friction stir welding means. A panel structure formed by connecting materials,
Each of the hollow extruded profiles adjacent to each other has a reinforcing plate portion having a thickness in a direction inclined with respect to the thickness direction of the side surface portion in an internal cavity of the extruded cross section of the hollow extruded profile. A panel structure characterized by being formed along a length direction.
前記補強板部の幅方向の一端部が、前記側面部の上下方向下端部の嵌め込み凹部と前記嵌め込み凸部の嵌め込み部の近傍に接合されたことを特徴とする請求項3に記載のパネル構造。   4. The panel structure according to claim 3, wherein one end portion in the width direction of the reinforcing plate portion is joined in the vicinity of the fitting concave portion of the lower end portion in the vertical direction of the side surface portion and the fitting portion of the fitting convex portion. .
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JP7435386B2 (en) 2020-09-28 2024-02-21 日本軽金属株式会社 structural material

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