JP4383906B2 - Tubular honeycomb structure - Google Patents
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- JP4383906B2 JP4383906B2 JP2004019852A JP2004019852A JP4383906B2 JP 4383906 B2 JP4383906 B2 JP 4383906B2 JP 2004019852 A JP2004019852 A JP 2004019852A JP 2004019852 A JP2004019852 A JP 2004019852A JP 4383906 B2 JP4383906 B2 JP 4383906B2
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この発明は、筒状ハニカム構造体にかかわり、更に詳しくは非円形断面のダクトの筒壁にハニカムサンドイッチ構造を使用した筒状ハニカム構造体に関するものである。 The present invention relates to a tubular honeycomb structure, and more particularly to a tubular honeycomb structure using a honeycomb sandwich structure on a tubular wall of a duct having a non-circular cross section.
従来、表面材と裏面材との間にハニカムコアを介在させたハニカムサンドイッチパネルは、重量の軽減化、垂直荷重に対する剛性の向上、変形防止、断熱硬化等を目的として、フロアーや壁面等の平面パネル、曲面パネル、円形断面、矩形断面の筒状体等、種々の分野に使用されている（例えば、特許文献１) 。 Conventionally, a honeycomb sandwich panel with a honeycomb core interposed between the front and back surfaces is a flat surface such as a floor or wall for the purpose of reducing weight, improving rigidity against vertical loads, preventing deformation, and heat-curing. It is used in various fields such as a panel, a curved panel, a circular section, and a cylindrical body having a rectangular section (for example, Patent Document 1).
ところで、断面円形状に形成した筒状体の補強材料として、例えば、補強繊維フィラメントを用いたものが知られている（例えば、特許文献２参照）。 By the way, as a reinforcing material of the cylindrical body formed in a circular cross section, for example, a material using a reinforcing fiber filament is known (for example, see Patent Document 2).
一方、断面円形状のダクトでは使用できないような箇所に使用される非円形断面のダクト（筒状体）をステンレス，アルミ合金、繊維強化プラスチック等の材質により製造する場合、偏平部または水平部、若しくはそれに類する箇所では、断面円形状のダクトと比べて曲げが発生し、大きな撓みが発生する。これを抑制するためには、ダクトの周壁の壁厚を厚くする必要があるが、その結果、重量が著しく増加してしまうと言う問題があった。
この発明は、かかる従来の問題点に着目して案出されたもので、非円形断面のダクトの周壁の一部をハニカム構造にすることで、剛性を確保し、微小な質量の増加で撓みを抑制することが出来る筒状ハニカム構造体を提供することを目的とするものである。 The present invention has been devised by paying attention to such a conventional problem. By forming a part of the peripheral wall of the duct having a non-circular cross section into a honeycomb structure, the rigidity is ensured, and the bending is increased by a small increase in mass. An object of the present invention is to provide a tubular honeycomb structure capable of suppressing the above.
上記目的を達成するため、本発明の筒状ハニカム構造体は、表面材と裏面材との間にハニカムコアを介在させたサンドイッチ構造の筒状ハニカム構造体であって、前記構造体が、相対向する平面部と、これら平面部の両端に相対向して配置され外側に突出する円弧状の曲面部とからなる断面偏平状の筒状体であり、前記平面部のみをハニカムサンドイッチ構造にしたことを要旨とするものである。 In order to achieve the above object, the tubular honeycomb structure of the present invention is a sandwich-shaped tubular honeycomb structure in which a honeycomb core is interposed between a front surface material and a back surface material, and the structure body is a relative structure. A cylindrical body having a flat cross-section comprising a flat portion facing each other and an arcuate curved portion disposed opposite to both ends of the flat portion and projecting outward, and only the flat portion has a honeycomb sandwich structure. This is the gist.
ここで、前記筒状体の平面部全面積の７０％〜１００％をハニカムサンドイッチ構造にすることもできる。 Here, 70% to 100% of the total area of the planar portion of the cylindrical body can be formed into a honeycomb sandwich structure .
前記表面材及び裏面材に、補強繊維に熱硬化樹脂または熱可塑性樹脂をコーティングまたは積層させた中間材料を使用することもできる。 An intermediate material in which a reinforcing fiber is coated or laminated with a thermosetting resin or a thermoplastic resin can also be used for the surface material and the back material .
前記平面部と前記曲面部との境界部分で、曲面部に近づく程、ハニカムコアの高さが低くなる仕様にすることもできる。 The height of the honeycomb core can be reduced as the curved surface portion is approached at the boundary portion between the flat surface portion and the curved surface portion .
このように非円形断面のダクトの周壁の一部をハニカム構造にすることで、剛性を確保し、微小な質量の増加で撓みを抑制することが出来る。 Thus the part of the peripheral wall of the non-circular cross-section duct by the honeycomb structure, and securing the rigidity, it is possible to suppress deflection in the increase of the fine mass.
この発明は上記のように構成したので、以下のような優れた効果を奏するものである。
（１）非円形断面のダクトの周壁の一部をハニカム構造にすることで、剛性を確保し、微小な質量の増加で撓みを抑制することが出来る。
（２）種々の方法により製造でき、しかも簡単に製造できるので、安価に製造できコストダウンを図ることが可能である。
Since the present invention is configured as described above, the following excellent effects can be obtained.
(1) By forming a part of the peripheral wall of the duct having a non-circular cross section into a honeycomb structure, it is possible to secure rigidity and suppress bending by increasing a minute mass.
(2) Since it can be manufactured by various methods and can be easily manufactured, it can be manufactured at low cost and cost reduction can be achieved.
以下、添付図面に基づきこの発明の実施の形態を説明する。 Embodiments of the present invention will be described below with reference to the accompanying drawings.
図１は、この発明の参考形態を示す非円形断面の筒状ハニカム構造体の斜視図、図２は図１のＡ−Ａ矢視断面図を示し、この筒状ハニカム構造体の筒状体１は、相対向する平面部Ｘ，Ｘと、相対向する曲面部Ｙ，Ｙとで断面扁平状に成形され、その構成は、表面材２と裏面材３との間にハニカムコア４を介在させてサンドイッチ構造に構成してある。
FIG. 1 is a perspective view of a cylindrical honeycomb structure having a non-circular cross-section showing a reference embodiment of the present invention, and FIG. 2 is a cross-sectional view taken along the line AA of FIG. 1 is formed into a flat cross-section with opposed flat surface portions X and X and opposed curved surface portions Y and Y, and has a configuration in which a honeycomb core 4 is interposed between a
なお、筒状体１は、非円形断面の扁平状に限定されず、矩形断面の筒状体にも適用することは可能である。また、この発明における筒状ハニカム構造体のハニカムの形状としては、６角形の他に、３〜１２の角形、円、星型等の他、またはそれらの組合せ等、補強が可能な形状であれば特に限定されない。この場合、各ハニカム形状の大きさとしては、５〜３０ｍｍ四方の方形状に含まれるような大きさ（セルサイズ）であることが好ましく、より好ましくは、１０〜３０ｍｍの四方の方形状に含まれるような大きさが良い。
The
また、この筒状体１の相対向する平面部Ｘ，Ｘは、平面部全面積の７０〜１００％がハニカムサンドイッチ構造により構成されていることが好ましいが、剛性，強度等を考慮した場合には、より好ましくは平面部全面積の８０〜１００％により構成することが望ましい。
In addition, it is preferable that the plane portions X and X of the
前記ハニカムコア４の素材としては、ステンレス，アルミ合金、補強繊維（例えば、ノーメックス繊維：デュポン社の登録商標）に熱可塑性樹脂、または熱硬化樹脂を含浸またはコーティングした繊維強化プラスチック等から選ばれた一つ、またはこれらの組合せ等を使用するものであり、更に前記表面材２及び裏面材３には、補強繊維に熱硬化樹脂または熱可塑性樹脂をコーティングまたは積層させた中間材料を使用する。
The material of the honeycomb core 4 was selected from stainless steel, aluminum alloy, reinforcing fiber (for example, Nomex fiber: registered trademark of DuPont), thermoplastic resin, or fiber reinforced plastic impregnated or coated with thermosetting resin. One or a combination of these is used, and the
この発明の参考形態では、筒状体１の平面部Ｘ，Ｘと曲面部Ｙ，Ｙとの全周をハニカム構造にしてある。
In the reference embodiment of the present invention, the entire circumference of the flat surface portions X and X and the curved surface portions Y and Y of the
また、図３及び図４に示すこの発明の実施形態では、筒状体１の平面部Ｘ，Ｘのみをハニカム構造にし、曲面部Ｙ，Ｙは、補強繊維に熱硬化樹脂または熱可塑性樹脂をコーティングまたは積層させた中間材料を使用した表面材２と裏面材３で構成してある。
Further, in the embodiment of the present invention shown in FIGS. 3 and 4, only the flat portions X and X of the
このように、非円形断面のダクトの周壁の一部をハニカム構造にすることで、剛性を確保し、微小な質量の増加で撓みを抑制することが出来るものである。 As described above, by forming a part of the peripheral wall of the duct having a non-circular cross section into a honeycomb structure, it is possible to ensure rigidity and to suppress the bending with a small increase in mass.
図１に示す参考形態では、巾Ｄ：３００mm、高さＨ：１００mm、長さＬ：１０００mmのダクトに使用した場合、１００kPa の内圧が負荷したとき、変形を１mmに抑えるためには、ダクト１ｍ当たりの重量は以下のようになる。
〔ハニカムコアの材質〕
ステンレス鋼 １６．８kg
アルミ合金 ８．５kg
炭素繊維強化プラスチック（ＣＦＲＰ） ５．３kg（＊１）
ハニカムダクト ２．８kg（＊２）
＊１：中弾性帆布グレード炭素繊維織布使用時の参考使用時の参考重量
＊２：内外皮１ｍｍの布ＧＦＲＰ，ハニカムコア全周の場合の例
In the reference form shown in FIG. 1, when used for a duct having a width D of 300 mm, a height H of 100 mm, and a length L of 1000 mm, when the internal pressure of 100 kPa is loaded, the duct is 1 m in order to suppress deformation to 1 mm. The hit weight is as follows.
[Material of honeycomb core]
Stainless steel 16.8kg
Aluminum alloy 8.5kg
Carbon fiber reinforced plastic (CFRP) 5.3 kg (* 1)
Honeycomb duct 2.8kg (* 2)
* 1: Reference weight when using medium elastic canvas grade carbon fiber woven cloth * 2: Example of cloth GFRP with inner and outer skins of 1 mm and honeycomb core circumference
この参考形態では、上記のようにダクトの周壁の全部にハニカム構造を適用した場合、個々のハニカムは、セルウォールにより細かく区切られ、閉じ込められた空気の対流を防止できるので、高い断熱効果を得ることが出来る。 In this reference embodiment , when the honeycomb structure is applied to the entire peripheral wall of the duct as described above, each honeycomb is finely divided by the cell walls, and convection of trapped air can be prevented, so that a high heat insulating effect is obtained. I can do it.
また、非円形断面のダクト本体に断熱効果を持たせることが出来るため、通常のダクト外側に巻付けている断熱材を不要とすることができるものである。 Moreover, since the heat insulation effect can be given to the duct main body of a non-circular cross section, the heat insulating material currently wound around the normal duct outer side can be made unnecessary.
次に、上記のような非円形断面の筒状ハニカム構造体の製造方法について説明する。 Next, a method for manufacturing a cylindrical honeycomb structure having a non-circular cross section as described above will be described.
この発明の実施形態における筒状ハニカム構造体の製造方法としては、大きく分けて熱硬化性繊維強化プラスチック（ＦＲＰ）を用いる場合と、熱可塑性繊維強化プラスチック（ＦＲＰ）を用いる場合とがある。 The method for manufacturing the tubular honeycomb structure according to the embodiment of the present invention can be broadly divided into a case where a thermosetting fiber reinforced plastic (FRP) is used and a case where a thermoplastic fiber reinforced plastic (FRP) is used.
（Ａ）〔熱硬化性繊維強化プラスチック（ＦＲＰ）を用いる場合〕
先ず、所定の大きさ（扁平状）のマンドレル（芯金）に、補強繊維と熱硬化樹脂とから成る繊維強化樹脂シートを巻付け、この繊維強化樹脂シート上の所定位置にハニカムコアを配設する。そして、更にその上に前記と同様な繊維強化樹脂シートを巻付けた後、バギング（バック）するか、シュリンクテープを巻付ける等で締め付け力がかかるようにして、前記外周面をオーブン，オートクレーブ，ヒータ等の加圧手段により加圧、または加圧手段を使用しないで加熱硬化し、硬化した筒状体からマンドレルを引き抜くことで筒状ハニカム構造体を製造するものである。
なお、加圧手段を用いるか否かは、任意である。
(A) [When using thermosetting fiber reinforced plastic (FRP)]
First, a fiber reinforced resin sheet made of reinforcing fiber and thermosetting resin is wound around a mandrel (core metal) having a predetermined size (flat shape), and a honeycomb core is disposed at a predetermined position on the fiber reinforced resin sheet. To do. Further, after winding a fiber reinforced resin sheet similar to the above on it, bagging (backing) or applying a tightening force by winding a shrink tape, etc., the outer peripheral surface is placed in an oven, an autoclave, A tubular honeycomb structure is manufactured by pressurizing with a pressurizing means such as a heater or heat-curing without using a pressurizing means, and pulling out the mandrel from the cured tubular body.
Whether or not the pressurizing means is used is arbitrary.
（Ｂ１）〔熱可塑性繊維強化プラスチック（ＦＲＰ）を用いる場合〕
この製造方法は、ガラス布等の補強繊維にポリアミド，ポリエーテルイミド，ＰＥＳ（ポリエーテルサルホン）等の熱可塑性材料をコーティングした中間材料を使用する（以下、これをラミネートシートと呼称する）。
(B1) [When using thermoplastic fiber reinforced plastic (FRP)]
This manufacturing method uses an intermediate material obtained by coating a reinforcing fiber such as a glass cloth with a thermoplastic material such as polyamide, polyetherimide, or PES (polyethersulfone) (hereinafter referred to as a laminate sheet).
先ず、予熱したマンドレルに、補強繊維と熱可塑性樹脂とから成る中間シート材料（ラミネートシート）を巻付け、温度を保温した状態で前記ラミネートシートの所定位置にハニカムコアを配設する。更にその上に前記と同様なラミネートシートを加熱・加圧（ローラ等で力を加える）しながら巻付けて筒状体を構成し、筒状体が冷却した後、マンドレルを引き抜くことにより筒状ハニカム構造体を製造するものである。 First, an intermediate sheet material (laminate sheet) composed of reinforcing fibers and a thermoplastic resin is wound around a preheated mandrel, and a honeycomb core is disposed at a predetermined position of the laminate sheet while keeping the temperature. Further, the same laminate sheet as above is wound while being heated and pressurized (applying force with a roller or the like) to form a cylindrical body. After the cylindrical body cools, the cylindrical body is pulled out by pulling out the mandrel. A honeycomb structure is manufactured.
（Ｂ２）〔熱可塑性繊維強化プラスチック（ＦＲＰ）を用いる場合〕
先ず、熱可塑性フィルムとガラス布等の補強繊維をマンドレルに交互に巻付けた後、この上の所定位置にハニカムコアを配設する。更に、ハニカムコア上に熱可塑性フィルムとガラス布等の補強繊維を交互に巻付け、より耐熱性の高いフィルムでバギングする（パックする）し、真空にする。そして、真空を維持したままオーブン，オートクレーブ等の加熱手段により熱可塑性フィルムを融点まで加熱し、冷却後、マンドレルを引き抜き、筒状ハニカム構造体を製造するものである。
(B2) [When using thermoplastic fiber reinforced plastic (FRP)]
First, after reinforcing fibers such as a thermoplastic film and glass cloth are alternately wound around a mandrel, a honeycomb core is disposed at a predetermined position on the mandrel. Further, a thermoplastic film and a reinforcing fiber such as a glass cloth are alternately wound on the honeycomb core, bagged (packed) with a film having higher heat resistance, and evacuated. And while maintaining a vacuum, a thermoplastic film is heated to melting | fusing point by heating means, such as oven and an autoclave, and after cooling, a mandrel is drawn out and a cylindrical honeycomb structure is manufactured.
（Ｂ３）〔熱可塑性繊維強化プラスチック（ＦＲＰ）を用いる場合〕
溶媒に溶解可能な熱可塑性樹脂の場合にのみ適用する場合。
先ず、熱可塑性樹脂を溶媒に溶かし（以下、これをワニスと呼称する）、ガラス布等の補強繊維にワニスを含浸させながらマンドレルに巻付ける。オーブン，ドライヤー等の加熱手段を用いて、使用した溶媒の特性に合わせた条件で半乾燥する。この状態で、所定位置にハニカムコアを配置し、ハニカムコアの上にガラス布等の補強繊維にワニスを含浸させながらマンドレルに巻付ける。そして、完全に乾燥した後、マンドレルを引き抜き、筒状ハニカム構造体を製造するものである。
(B3) [When using thermoplastic fiber reinforced plastic (FRP)]
When applied only to thermoplastic resins that are soluble in solvents.
First, a thermoplastic resin is dissolved in a solvent (hereinafter referred to as varnish), and wound around a mandrel while impregnating the varnish into a reinforcing fiber such as a glass cloth. Using a heating means such as an oven or a dryer, semi-dry under conditions that match the characteristics of the solvent used. In this state, a honeycomb core is disposed at a predetermined position, and wound around a mandrel while impregnating a varnish into a reinforcing fiber such as a glass cloth on the honeycomb core. And after drying completely, a mandrel is pulled out and a cylindrical honeycomb structure is manufactured.
このように非円形断面のダクトの周壁の一部をハニカム構造にして製造することにより、剛性を確保し、微小な質量の増加で撓みを抑制することが出来る。 Thus, by manufacturing a part of the peripheral wall of the duct having a non-circular cross section with a honeycomb structure, it is possible to secure rigidity and to suppress the bending with a small increase in mass.
更に、筒状ハニカム構造体を種々の方法により製造できるので、簡単で安価に製造できコストダウンを図ることが可能である。 Furthermore, since the cylindrical honeycomb structure can be manufactured by various methods, it can be manufactured easily and inexpensively and the cost can be reduced.
１ 筒状体 ２ 表面材
３ 裏面材 ４ ハニカムコア
Ｘ 平面部 Ｙ 曲面部
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| Application Number | Priority Date | Filing Date | Title |
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| JP2004019852A JP4383906B2 (en) | 2004-01-28 | 2004-01-28 | Tubular honeycomb structure |
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| JP2004019852A JP4383906B2 (en) | 2004-01-28 | 2004-01-28 | Tubular honeycomb structure |
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| JP2005212200A JP2005212200A (en) | 2005-08-11 |
| JP4383906B2 true JP4383906B2 (en) | 2009-12-16 |
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