【発明の詳細な説明】《産業上の利用分野》本発明は、軽量構造体の一種であるサンドイッチ横遺体
の芯材に用いられるハニカムコア構造体に関する．（従来の技術）従来、この種のハニカムコア構造体としては、第３図に
示すようなものがある．すなわち、第３図はハニカムコ
ア梢造体の平面図を示すもので、正六角形の単位セルを
縦横方向に繰り返して多数平面状に連続させてハニカム
コアｍ造体を構成している．ここで単位セルの図中Ｘ方
向く以下、リボン方向という，）の配設ピッチはａとな
っており、単位セルの図中ｙ方向（以下、仲展方向とい
う．）の配設ピッチはｂとなっており、これらの配設ピ
ッチａ，ｂはａ＞ｂなる関係となっている．（発明が解
決しようとする課題）しかしながら、従来の多数の正六角形の単位セルにて構
成されたハニカムコア楕造体では、上述のように単位セ
ルのリボン方向及び伸展方向の配設ピッチａ，ｂの間に
大きな差があるので、リボン方向のせん断強度と伸展方
向のせん断強度との間に違いが生ずるという欠点がある
．したがって、かかるハニカムコア構造体を使用する際
には、荷重の負荷方向を考慮したうえでハニカムコア椙
造体のコアの方向を適切な方向に一致するようにしなけ
ればならない．特に．せん断強度の小さい方向を基準と
してハニカムコア梢遠体の配設方向を決定するようにす
ると、せん断強度の大きな方向が過剰品質となってハニ
カムコア梢造体自体の重蓋が増大するという欠点がある
．本発明は、上記欠点を解消することを課題とするもので
あって、リボン方向のせん断強度と伸展方向のせん断強
度とを略同一にすることができ、配設方向を特段考慮し
なくてもよく軽量化を図ることができるハニカムコア！
ｆ４還体を提供することを目的とする。DETAILED DESCRIPTION OF THE INVENTION <<Industrial Application Field>> The present invention relates to a honeycomb core structure used as a core material of a sandwich body, which is a type of lightweight structure. (Prior Art) Conventionally, this type of honeycomb core structure includes the one shown in Fig. 3. That is, FIG. 3 shows a plan view of a honeycomb core structure, in which a large number of regular hexagonal unit cells are repeated in the vertical and horizontal directions and are connected in a planar manner to constitute a honeycomb core m structure. Here, the arrangement pitch of the unit cells in the X direction in the figure (hereinafter referred to as the ribbon direction) is a, and the arrangement pitch of the unit cells in the y direction in the figure (hereinafter referred to as the ribbon direction) is b. These arrangement pitches a and b have a relationship of a>b. (Problems to be Solved by the Invention) However, in the conventional honeycomb core elliptical body composed of a large number of regular hexagonal unit cells, as described above, the arrangement pitch a of the unit cells in the ribbon direction and the extension direction, Since there is a large difference between b and b, there is a drawback that there is a difference between the shear strength in the ribbon direction and the shear strength in the stretching direction. Therefore, when using such a honeycomb core structure, the direction of the core of the honeycomb core structure must be aligned with the appropriate direction after considering the direction of the load. especially. If the direction in which the honeycomb core canopy structure is arranged is determined based on the direction of low shear strength, the disadvantage is that the direction of high shear strength will result in excessive quality and the overlapping of the honeycomb core canopy structure itself will increase. be. It is an object of the present invention to solve the above-mentioned drawbacks, and it is possible to make the shear strength in the ribbon direction and the shear strength in the stretching direction substantially the same, without having to particularly consider the arrangement direction. Honeycomb core can be used to reduce weight!
The purpose is to provide f4 reductant.
《課題を解決するための手段》上記課題は、六角形の単位セルを縦横方向に繰り返して
多数平面状に３！続させてなるハニカムコア構造体にお
いて、前記単位セルの形状を、多数の単位セルを平面状
に配設した際に該単位セルの縦方向の配設ピッチ寸法と
単位セルの横方向の配設ピッチ寸法とが略同一寸法とな
る偏平六角形形状としてあることにより解決することが
できる．《作用》本発明によれば，単位セルの形状が，多数の単位セルを
平面状に配設した際に、単位セルの縦方向の配設ピッチ
寸法と単位セルの横方向の配設ピッチ寸法とが略同一寸
法となるような偏平六角形形状となっているので、ハニ
カムコアｓｎ体の縦横方向のせん断強度を略同一とする
ことができる。《Means for solving the problem》 The above problem is to repeat hexagonal unit cells in the vertical and horizontal directions to form a large number of 3! In a honeycomb core structure formed by connecting a plurality of unit cells, the shape of the unit cells is determined by the vertical arrangement pitch dimension of the unit cells and the horizontal arrangement of the unit cells when a large number of unit cells are arranged in a plane. This can be solved by creating a flat hexagonal shape with approximately the same pitch dimension. <<Operation>> According to the present invention, when the shape of a unit cell is arranged in a planar manner, when a large number of unit cells are arranged in a plane, the arrangement pitch dimension in the vertical direction of the unit cells and the arrangement pitch dimension in the lateral direction of the unit cells are Since the honeycomb core sn body has a flat hexagonal shape with substantially the same dimensions, the shear strength in the longitudinal and lateral directions of the honeycomb core sn body can be made substantially the same.
したがって、ハニカムコア梢遺体の配役方向を特段考慮
しなくてもよくなり、ハニカムコア構造体の特定方向が
過剰品質となることがなくなってハニカムコア構造体の
重量を軽くすることができる．《実施例》以下に図面を参照して本発明の一実施例について説明す
る．第１図に示すように、本実胞例におけるハニカムコア楕
造体１０は、第２図に示すような偏平六角形の単位セル
１０ａを、多数縦横方向に平面状に連続させて構成され
ている．単位セル１０の各部の寸法は第２図に示すよう
になっており、第１図のように、図中Ｘ方向《リボン方
向》、ｙ方向く伸展方向》に連続させた場合にその各方
向に配設ピッチ寸法ｃ．ｄが略同一寸法となっている４
次に、本実施例によりせん断強度が等方化する効果につ
いて説明する．すなわち、ある方向のせん断強度を、その方向に引いた
直線の横切るセル壁の数で比較すると、リボン方向、伸
展方向において、第１図では２０：２０であるのに対し
、第３図では２０：１２である．また次に重量を、１０
ＳｘｌＯＳ （Ｓ：セルサイズ》の正方形のコア重量（
Ｗ）を最小ぜん断強度《τ》で割った値で比較する．な
お第１図に関するものを添字１、第３図に関するものを
添字２で表わす．（Ｗ，／τｌ）／（Ｗ３／τ．）＝ｌｌとなり、約３０
％程度軽麓化されていることがわかる，本実施例では、縦横方向の配設ピッチｃ，ｄが略等しく
なるように六角形の形状を偏平六角形に変えることによ
り、せん断強度およびせん断弾性係数を略等方性にする
ことができる．その結果、ハニカムコア楕遺体を強度、
剛性および重量的に無駄がなく設計することができるよ
うになる．《発明の効果》以上に説明したように、本発明のハニカムコア横道体に
よれば、そのリボン方向のせん断強度と仲展方向のせん
断強度とを略同一にすることができ、配設方向を特段考
慮しなくてもよく、ハニカムコア構造体の軽量化を図る
ことができる．Therefore, there is no need to particularly consider the direction in which the honeycomb core tree bodies are placed, and the honeycomb core structure does not have excessive quality in a particular direction, making it possible to reduce the weight of the honeycomb core structure. <<Example>> An example of the present invention will be described below with reference to the drawings. As shown in FIG. 1, the honeycomb core elliptical body 10 in this example is composed of a large number of oblate hexagonal unit cells 10a as shown in FIG. There is. The dimensions of each part of the unit cell 10 are as shown in FIG. 2, and as shown in FIG. Arrangement pitch dimension c. d is approximately the same size 4
Next, the effect of making the shear strength isotropic by this example will be explained. In other words, when comparing the shear strength in a certain direction by the number of cell walls crossed by a straight line drawn in that direction, in the ribbon direction and stretching direction, the ratio is 20:20 in Fig. 1, while it is 20:20 in Fig. 3. :12. Next, add the weight to 10
SxlOS (S: cell size) square core weight (
Compare the values obtained by dividing W) by the minimum shear strength 《τ》. Items related to Figure 1 are indicated by subscript 1, and items related to Figure 3 are indicated by subscript 2. (W,/τl)/(W3/τ.)=ll, which is about 30
In this example, the hexagonal shape is changed to a flat hexagonal shape so that the arrangement pitches c and d in the longitudinal and lateral directions are approximately equal, thereby increasing the shear strength and shear elasticity. The coefficients can be made nearly isotropic. As a result, the strength of the honeycomb core ellipsoid,
This allows for efficient designs in terms of rigidity and weight. <<Effects of the Invention>> As explained above, according to the honeycomb core cross-channel body of the present invention, the shear strength in the ribbon direction and the shear strength in the intermediate rolling direction can be made substantially the same, and the arrangement direction can be No special consideration is required, and the weight of the honeycomb core structure can be reduced.
【図面の簡単な説明】[Brief explanation of the drawing]第１図は本発明の一実施例を示すハニカムコア楕造体の
平面図，第２図は第１図実施例を横成する単位セルを示
す平面図、第３図は従来のハニカムコア構造体を示す平
面図である．１０・・・ハニカムコア楕遣体、１０ａ・・・単位セル
、ｃ，ｄ・・・配設ピツチ．Fig. 1 is a plan view of a honeycomb core elliptical body showing an embodiment of the present invention, Fig. 2 is a plan view showing a unit cell forming the embodiment of Fig. 1, and Fig. 3 is a conventional honeycomb core structure. It is a plan view showing the body. 10...Honeycomb core elliptical body, 10a...Unit cell, c, d...Arrangement pitch.