JP2006103403A - Floor sheet - Google Patents

Floor sheet Download PDF

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Publication number
JP2006103403A
JP2006103403A JP2004289818A JP2004289818A JP2006103403A JP 2006103403 A JP2006103403 A JP 2006103403A JP 2004289818 A JP2004289818 A JP 2004289818A JP 2004289818 A JP2004289818 A JP 2004289818A JP 2006103403 A JP2006103403 A JP 2006103403A
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Japan
Prior art keywords
sheet
floor
floor sheet
sound
intermediate member
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JP2004289818A
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Japanese (ja)
Inventor
Naoto Ishii
直人 石井
Kaoru Aoyanagi
薫 青柳
Kazutaka Ano
和隆 阿野
Yasuyuki Tamane
靖之 玉根
Mitsuhiro Nishisaka
光弘 西坂
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Honda Motor Co Ltd
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Honda Motor Co Ltd
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Application filed by Honda Motor Co Ltd filed Critical Honda Motor Co Ltd
Priority to JP2004289818A priority Critical patent/JP2006103403A/en
Priority to US11/220,675 priority patent/US20060080941A1/en
Priority to CNA2005101058744A priority patent/CN1755044A/en
Publication of JP2006103403A publication Critical patent/JP2006103403A/en
Pending legal-status Critical Current

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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
    • E04C2/34—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts
    • E04C2/3405—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts spaced apart by profiled spacer sheets
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
    • E04C2/34—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts
    • E04C2/3405—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts spaced apart by profiled spacer sheets
    • E04C2002/3411—Dimpled spacer sheets
    • E04C2002/3427—Dimpled spacer sheets with conical dimples

Abstract

<P>PROBLEM TO BE SOLVED: To provide a floor sheet capable of suppressing an increase in the total weight of a vehicle, and improving the sound absorption performance and rigidity thereof. <P>SOLUTION: The floor sheet 1 mainly consists of an intermediate member 10 made by contacting a plurality of hollow protrusions 13, 14 formed in two thin plates 11, 12 respectively, and two sheet members 20 holding this intermediate member 10 therebetween. Furthermore, a flooring member 30 is fixed to the upper side sheet member 20, and an insulator 40 is fixed to the lower side sheet member 20. On one face side of this floor sheet 1, sound absorption holes H communicated with the outside and a space in a honeycomb structure 2 are opened. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、車両や家屋などの床に配設されるフロアシートに関するものである。   The present invention relates to a floor sheet disposed on a floor of a vehicle or a house.

一般に、家屋の室内のフロアシートとして、合板に木目調のフローリング部材を貼り付けてなるフロアシートがある（例えば、特許文献１参照）。このようなフロアシートは、車両用のフロアシートして使用されるカーペットに比べ、意匠性に富み、かつ、ウォッシャブルであるため、ミニバンなどの車両で適用されることが望まれている。   In general, as a floor sheet in a house, there is a floor sheet in which a wood-grained flooring member is attached to a plywood (see, for example, Patent Document 1). Such a floor sheet is rich in design and is washable compared to a carpet used as a vehicle floor sheet, and thus is desired to be applied to a vehicle such as a minivan.

特開平１１−６２１９７号公報JP-A-11-62197

しかしながら、従来のような家屋に用いるフロアシートは、吸音性向上およびその剛性を高めるために厚めに形成されているので、このように厚めに形成されたフロアシートをそのまま車室のフロアに敷くことは、車両の総重量が増加するため好ましくかった。   However, since the floor sheet used in a conventional house is formed thick in order to improve sound absorption and increase its rigidity, the floor sheet thus formed is laid on the floor of the passenger compartment as it is. Was preferable because the total weight of the vehicle increased.

そこで、本発明では、車両の総重量の増加を抑えることができるとともに、吸音性向上およびその剛性も高めることができるフロアシートを提供することを目的とする。   Therefore, an object of the present invention is to provide a floor sheet that can suppress an increase in the total weight of the vehicle, improve sound absorption, and increase its rigidity.

前記課題を解決する本発明のうち請求項１に記載のフロアシートは、複数の中空の凸部が形成された少なくとも一つの薄板からなる中間部材と、この中間部材を挟み込む二つのシート部材とを備えるハニカム構造体を含んで構成されることを特徴とする。   The floor sheet according to claim 1 of the present invention that solves the above problems comprises an intermediate member made of at least one thin plate on which a plurality of hollow protrusions are formed, and two sheet members sandwiching the intermediate member. It is characterized by including the provided honeycomb structure.

請求項１に記載の発明によれば、中間部材と二つのシート部材によって内部に複数の空間が形成されたハニカム構造体は、その重量が小さく、かつ、剛性が高いという特性を持っているため、このようなハニカム構造体を備えたフロアシートを例えば車両のフロアに適用すると、車両の総重量を抑えることができる他、フロアシート自体の吸音性や剛性も高くすることができる。   According to the first aspect of the present invention, the honeycomb structure in which a plurality of spaces are formed by the intermediate member and the two sheet members has characteristics that the weight is small and the rigidity is high. When a floor sheet provided with such a honeycomb structure is applied to, for example, a vehicle floor, the total weight of the vehicle can be suppressed, and the sound absorption and rigidity of the floor sheet itself can be increased.

請求項２に記載の発明は、請求項１に記載のフロアシートであって、前記中間部材は、前記薄板を複数有し、各薄板に形成された複数の前記凸部が互いに当接されて構成されていることを特徴とする。   A second aspect of the present invention is the floor sheet according to the first aspect, wherein the intermediate member includes a plurality of the thin plates, and the plurality of convex portions formed on the thin plates are in contact with each other. It is configured.

請求項２に記載の発明によれば、凸部の高さを高くせずに、中間部材に形成される空間を大きくすることができるので、剛性が高められるとともに、衝撃吸収性や吸音性をも向上させることができる。   According to the second aspect of the present invention, since the space formed in the intermediate member can be increased without increasing the height of the convex portion, the rigidity is improved and the impact absorption and sound absorption properties are improved. Can also be improved.

請求項３に記載の発明は、請求項１または請求項２に記載のフロアシートであって、前記フロアシートの少なくとも一面側に、外部とハニカム構造体内の空間とに連通する連通孔を開けたことを特徴とする。   Invention of Claim 3 is the floor sheet of Claim 1 or Claim 2, Comprising: The communicating hole connected to the exterior and the space in a honeycomb structure was opened in the at least one surface side of the said floor sheet. It is characterized by that.

ここで、「一面側に連通孔を開ける」とは、一面側のうちシート部材と薄板の板状部分とが重なり合う部分においては、これら両方の部材に連通孔を開けることをいい、一面側のうちシート部材と中空の凸部（シート部材側から見ると凹部となっている）とが重なり合う部分においては、シート部材のみに連通孔を開けることをいう。   Here, “opening a communication hole on one surface side” means that a communication hole is formed in both of the members on the one surface side where the sheet member and the plate-like portion of the thin plate overlap. Among them, in a portion where the sheet member and the hollow convex portion (which is a concave portion when viewed from the sheet member side) overlap, it means that a communication hole is opened only in the sheet member.

請求項３に記載の発明によれば、フロアシートの少なくとも一面側に連通孔が開けられているので、例えば、その一面側のシート部材が通気性を有さない部材であっても、そのシート部材側で発生する騒音を連通孔から取り込んでハニカム構造体内で良好に吸収することができる。   According to the invention described in claim 3, since the communication hole is formed on at least one surface side of the floor sheet, for example, even if the sheet member on the one surface side is a member having no air permeability, the sheet Noise generated on the member side can be taken in from the communication hole and absorbed well in the honeycomb structure.

請求項４に記載の発明は、請求項１〜請求項３のうちのいずれか１項に記載のフロアシートであって、前記連通孔が開けられたシート部材は、前記連通孔に開口する貫通孔を有した木材または樹脂からなる表面材を備えることを特徴とする。   Invention of Claim 4 is a floor sheet of any one of Claims 1-3, Comprising: The sheet | seat member by which the said communicating hole was opened is the penetration which opens to the said communicating hole A surface material made of wood or resin having holes is provided.

請求項４に記載の発明によれば、通常、通気性を有さない表面材に、シート部材の連通孔へ開口する貫通孔が開いているので、例えば、車室内の騒音を床材としてのハニカム構造体によって良好に吸収することができるとともに、その車の所有者が自分の好みにあった表面材を自由に選択して快適性を向上させることもできる。   According to the fourth aspect of the present invention, since the through-hole that opens to the communication hole of the seat member is normally opened in the surface material that does not have air permeability, for example, the noise in the vehicle interior is used as the floor material. It can be absorbed well by the honeycomb structure, and the car owner can freely select a surface material that suits his / her preference to improve comfort.

請求項１に記載の発明によれば、重量が小さく、かつ、剛性が高いという特性を持ったハニカム構造体をフロアシートの構成要素とするため、このようなフロアシートを例えば車両のフロアに適用すると、車両の総重量を抑えることができる他、フロアシート自体の吸音性や剛性も高くすることができる。   According to the first aspect of the present invention, a honeycomb structure having characteristics of low weight and high rigidity is used as a constituent element of the floor sheet. Therefore, such a floor sheet is applied to, for example, a vehicle floor. Then, the total weight of the vehicle can be suppressed, and the sound absorption and rigidity of the floor sheet itself can be increased.

請求項２に記載の発明によれば、凸部の高さを高くせずに、中間部材に形成される空間を大きくすることができるので、剛性が高められるとともに、衝撃吸収性や吸音性をも向上させることができる。   According to the second aspect of the present invention, since the space formed in the intermediate member can be increased without increasing the height of the convex portion, the rigidity is improved and the impact absorption and sound absorption properties are improved. Can also be improved.

請求項３に記載の発明によれば、フロアシートの少なくとも一面側に連通孔が開けられているので、例えば、その一面側のシート部材が通気性を有さない部材であっても、そのシート部材側で発生する騒音を連通孔から取り込んでハニカム構造体内で良好に吸収することができる。   According to the invention described in claim 3, since the communication hole is formed on at least one surface side of the floor sheet, for example, even if the sheet member on the one surface side is a member having no air permeability, the sheet Noise generated on the member side can be taken in from the communication hole and absorbed well in the honeycomb structure.

請求項４に記載の発明によれば、通常、通気性を有さない表面材に、シート部材の連通孔へ開口する貫通孔が開いているので、例えば、車室内の騒音を床材としてのハニカム構造体によって良好に吸収することができるとともに、その車の所有者が自分の好みにあった表面材を自由に選択して快適性を向上させることもできる。   According to the fourth aspect of the present invention, since the through-hole that opens to the communication hole of the seat member is normally opened in the surface material that does not have air permeability, for example, the noise in the vehicle interior is used as the floor material. It can be absorbed well by the honeycomb structure, and the car owner can freely select a surface material that suits his / her preference to improve comfort.

次に、本発明の実施形態について、適宜図面を参照しながら詳細に説明する。参照する図面において、図１は本実施形態に係るフロアシートが配設された車両を示す斜視図であり、図２は図１のフロアシートの詳細を示す分解斜視図である。また、図３は、図２のフロアシートを重ね合わせた状態を示す斜視図（ａ）と、図３（ａ）のＡ−Ａ断面図（ｂ）である。   Next, embodiments of the present invention will be described in detail with reference to the drawings as appropriate. In the drawings to be referred to, FIG. 1 is a perspective view showing a vehicle provided with a floor seat according to the present embodiment, and FIG. 2 is an exploded perspective view showing details of the floor seat of FIG. 3 is a perspective view (a) showing a state in which the floor sheets of FIG. 2 are overlaid, and a cross-sectional view taken along line AA of FIG. 3 (a).

図１に示すように、フロアシート１は、車両Ｃの床材として利用されている。具体的に、このフロアシート１は、図２に示すように、中間部材１０と、この中間部材１０を挟み込む二枚のシート部材２０と、で主に構成されている。そして、二枚のシート部材２０のうち上側のシート部材２０には、フローリング部材（表面材）３０が固着され、下側のシート部材２０には、インシュレータ４０が固着されている。なお、前記した中間部材１０と、二枚のシート部材２０とでハニカム構造体２が形成されるようになっている。   As shown in FIG. 1, the floor sheet 1 is used as a flooring material for the vehicle C. Specifically, as shown in FIG. 2, the floor sheet 1 mainly includes an intermediate member 10 and two sheet members 20 that sandwich the intermediate member 10. A flooring member (surface material) 30 is fixed to the upper sheet member 20 of the two sheet members 20, and an insulator 40 is fixed to the lower sheet member 20. Note that the honeycomb structure 2 is formed by the intermediate member 10 and the two sheet members 20 described above.

図２に示すように、中間部材１０は、上下に配設された二枚の薄板１１，１２で構成されている。この各薄板１１，１２には、互いに対応し合う複数の中空の凸部１３，１４が千鳥状に形成されており、これらの凸部１３，１４の先端同士は、それぞれ当接して固着されるようになっている（図３参照）。また、上側の薄板１１の平板部１１ａ（凸部１３が形成されていない部分）には、上下に貫通する第１吸音孔（連通孔）Ｈ１が開けられている。さらに、この第１吸音孔Ｈ１は、薄板１１の面に沿った一方向（凸部１３が直線状に並ぶ方向）に所定のピッチαで形成されるとともに、前記した一方向とは直交する他方向に所定のピッチβで形成されている。   As shown in FIG. 2, the intermediate member 10 is composed of two thin plates 11 and 12 that are arranged one above the other. A plurality of hollow convex portions 13 and 14 that correspond to each other are formed in a staggered pattern on each of the thin plates 11 and 12, and the tips of the convex portions 13 and 14 are in contact with each other and fixed. (See FIG. 3). Further, a first sound absorbing hole (communication hole) H1 penetrating vertically is formed in the flat plate portion 11a (the portion where the convex portion 13 is not formed) of the upper thin plate 11. Further, the first sound absorbing holes H1 are formed at a predetermined pitch α in one direction along the surface of the thin plate 11 (the direction in which the convex portions 13 are arranged in a straight line), and are orthogonal to the one direction described above. It is formed with a predetermined pitch β in the direction.

シート部材２０は、シート状に形成された通気性を有さない部材であり、前記した中間部材１０の上下面に固着されている。そして、これら二枚のシート部材２０のうち上側のシート部材２０には、前記した第１吸音孔Ｈ１と同形状、同ピッチとなる第２吸音孔（連通孔）Ｈ２が第１吸音孔Ｈ１に対応するように開けられている。   The sheet member 20 is a non-breathable member formed in a sheet shape, and is fixed to the upper and lower surfaces of the intermediate member 10 described above. In the upper sheet member 20 of these two sheet members 20, a second sound absorption hole (communication hole) H2 having the same shape and pitch as the first sound absorption hole H1 is formed in the first sound absorption hole H1. It is opened to correspond.

なお、このシート部材２０や前記した中間部材１０の材料としては、ポリプロピレン（ＰＰ）を採用するのが望ましいが、本発明はこれに限らず、例えばエンプラ（エンジニアリング・プラスチック）やポリプロピレン以外の他のオレフィン系の樹脂などを採用してもよい。ここで、ポリプロピレン以外の他のオレフィン系樹脂としては、ポリエチレン、ＴＰＯ（ＰＰとゴム成分の混合物）などが挙げられる。また、エンプラとしては、ポリカーボネート、ポリアミド、変性ポリフェニレンエーテル、ポリエチレンテレフタレート、ポリブチレンテレフタレート、ポリアセタール、ポリフェニレンサルファイドなどが挙げられる。なお、このようなハニカム構造体２の製造方法としては、特開２０００−３２６４３０号公報で開示した真空成形装置による製造方法や、射出成型による製造方法など、どのような製造方法を採用してもよい。   The material of the sheet member 20 and the intermediate member 10 is preferably polypropylene (PP), but the present invention is not limited to this. For example, other materials other than engineering plastic (engineering plastic) and polypropylene are used. An olefin resin or the like may be employed. Here, examples of the olefin resin other than polypropylene include polyethylene and TPO (a mixture of PP and a rubber component). Examples of engineering plastics include polycarbonate, polyamide, modified polyphenylene ether, polyethylene terephthalate, polybutylene terephthalate, polyacetal, polyphenylene sulfide, and the like. In addition, as a manufacturing method of such a honeycomb structure 2, any manufacturing method such as a manufacturing method using a vacuum forming apparatus disclosed in JP 2000-326430 A or a manufacturing method using injection molding may be adopted. Good.

フローリング部材３０は、その表面３０ａに木目調などの模様が施された通気性を有さない部材であり、前記した上側のシート部材２０に固着されている。そして、このフローリング部材３０には、前記した第２吸音孔Ｈ２と同形状、同ピッチとなる第３吸音孔（貫通孔）Ｈ３が第２吸音孔Ｈ２に対応するように開けられている。   The flooring member 30 is a non-breathable member whose surface 30a has a pattern such as wood grain, and is fixed to the upper sheet member 20 described above. The flooring member 30 is provided with third sound absorbing holes (through holes) H3 having the same shape and pitch as the second sound absorbing holes H2 so as to correspond to the second sound absorbing holes H2.

なお、前記した第１吸音孔Ｈ１、第２吸音孔Ｈ２および第３吸音孔Ｈ３（以下、これらの孔を単に「吸音孔Ｈ」ともいう）は、中間部材１０、シート部材２０およびフローリング部材３０を重ね合わせて固着した後に、外部からハニカム構造体２内の空間へと同時に開けるのが望ましい。また、吸音孔Ｈの大きさや数は、任意であり、吸収したい騒音の大きさや周波数などに応じて適宜設定することができる。   The first sound absorbing hole H1, the second sound absorbing hole H2, and the third sound absorbing hole H3 (hereinafter, these holes are also simply referred to as “sound absorbing holes H”) are the intermediate member 10, the sheet member 20, and the flooring member 30. It is desirable to open them simultaneously from the outside to the space in the honeycomb structure 2 after being fixed. The size and number of the sound absorbing holes H are arbitrary and can be set as appropriate according to the size and frequency of the noise to be absorbed.

インシュレータ４０は、吸音材であり、主に、路面側からの騒音（ロードノイズ）を吸音している。   The insulator 40 is a sound absorbing material and mainly absorbs noise (road noise) from the road surface side.

次に、本実施形態に係るフロアシート１の吸音作用について説明する。
図３（ｂ）に示すように、車室内で音が発生すると、その音は、吸音孔Ｈを介して中間部材１０の空間（薄板１１，１２の平板部１１ａ，１２ａと各凸部１３，１４の外周面とで形成される空間）内に入っていく。そして、このように中間部材１０の空間内に入ってきた音は、各凸部１３，１４にぶつかって反射するときに、各凸部１３，１４を振動させるエネルギに変換されることで、徐々に弱められていき、この中間部材１０によって吸音されることとなる。 Next, the sound absorbing action of the floor sheet 1 according to the present embodiment will be described.
As shown in FIG. 3 (b), when sound is generated in the passenger compartment, the sound is transmitted through the sound absorbing hole H to the space of the intermediate member 10 (the flat plate portions 11a and 12a of the thin plates 11 and 12, and the convex portions 13 and 12). 14) and a space formed by 14 outer peripheral surfaces. Then, the sound that has entered the space of the intermediate member 10 in this way is gradually converted into energy that vibrates each convex portion 13, 14 when it hits and reflects each convex portion 13, 14. As a result, the sound is absorbed by the intermediate member 10.

以上によれば、本実施形態において、次のような効果を得ることができる。
通気性を有さない部材である薄板１１、シート部材２０およびフローリング部材３０に吸音孔Ｈを開けるので、車室内の騒音をフロアシート１によって良好に吸収することができるとともに、その車の所有者が自分の好みにあったフローリング部材３０を自由に選択して快適性を向上させることもできる。 According to the above, the following effects can be obtained in the present embodiment.
Since the sound absorbing hole H is opened in the thin plate 11, the seat member 20 and the flooring member 30 which are members that do not have air permeability, the floor seat 1 can absorb the noise in the passenger compartment well, and the owner of the vehicle However, the user can freely select the flooring member 30 according to his / her preference to improve the comfort.

また、剛性が高く、吸音性を有し、かつ、軽量であるという特性を有するハニカム構造体２をフロアシート１の構成部材として使用したので、従来フロアに設けていた重いメルシート（遮音材）を設ける必要がなくなり、車両全体の軽量化を図ることができる。
さらに、内部が複雑な構造であるハニカム構造体２をフロアシート１の構成部材として利用することによって、そのフロアシート１に難燃性を持たせることができる。 Moreover, since the honeycomb structure 2 having the characteristics of high rigidity, sound absorption, and light weight is used as a constituent member of the floor sheet 1, a heavy mel sheet (sound insulating material) provided on the conventional floor is used. There is no need to provide it, and the overall weight of the vehicle can be reduced.
Further, by using the honeycomb structure 2 having a complicated structure as a constituent member of the floor sheet 1, the floor sheet 1 can be provided with flame retardancy.

なお、本発明は、前記実施形態に限定されることなく、様々な形態で実施される。
本実施形態では、フロアシート１を車両のフロアに適用したが、本発明はこれに限定されず、例えば家屋の床に適用してもよい。また、中間部材１０およびシート部材２０の材質は、樹脂ではなく、例えば鉄などであってもよい。 In addition, this invention is implemented in various forms, without being limited to the said embodiment.
In the present embodiment, the floor sheet 1 is applied to a vehicle floor, but the present invention is not limited to this, and may be applied to a floor of a house, for example. Further, the material of the intermediate member 10 and the sheet member 20 may not be resin but may be iron, for example.

本実施形態では、上側の薄板１１、上側のシート部材２０およびフローリング部材３０を貫通するように吸音孔Ｈを開けたが、本発明はこれに限定されず、例えば吸音孔を中空の凸部１３とシート部材２０との間に形成される空間に開口させる場合には、シート部材２０とフローリング部材３０のみを貫通するように吸音孔を開けてもよい。また、吸音孔は、本実施形態のように各板状の部材１１，２０，３０の面に対して直交するように開ける必要はなく、例えば面に対して斜めになるように開けてもよい。   In the present embodiment, the sound absorbing hole H is opened so as to penetrate the upper thin plate 11, the upper sheet member 20 and the flooring member 30, but the present invention is not limited to this. For example, the sound absorbing hole is formed as a hollow convex portion 13. When the opening is made in the space formed between the sheet member 20 and the sheet member 20, a sound absorbing hole may be formed so as to penetrate only the sheet member 20 and the flooring member 30. Further, the sound absorption holes do not need to be opened so as to be orthogonal to the surfaces of the respective plate-like members 11, 20, and 30 as in the present embodiment, and may be opened so as to be inclined with respect to the surfaces, for example. .

次に、前記実施形態に係るフロアシート１による吸音作用についての実施例（実験結果）を説明することとする。最初に、この実験の条件を示すこととする。   Next, an example (experimental result) about the sound absorbing action by the floor sheet 1 according to the embodiment will be described. First, let us show the conditions for this experiment.

〔条件〕
（１）中間部材１０およびシート部材２０の材質：ポリプロピレン（ＰＰ）
（２）インシュレータ４０の材質：ウレタン
（３）吸音孔Ｈの直径：２ｍｍ
（４）吸音孔Ｈのピッチα：４０ｍｍ
（５）吸音孔Ｈのピッチβ：３０ｍｍ
（６）凸部１３，１４の高さ：５．５ｍｍ
（７）凸部１３，１４の先端面の直径：２ｍｍ
（８）凸部１３，１４の基端部の直径（開口部の直径）：７ｍｍ
（９）凸部１３，１４のピッチ：１１ｍｍ
（１０）薄板１１，１２の厚さ：０．５ｍｍ
（１１）シート部材２０の厚さ：５．５ｍｍ
（１２）フローリング部材３０の厚さ：２ｍｍ
（１３）インシュレータ４０の厚さ：２０ｍｍ
なお、吸音孔Ｈを前記したピッチα，βで形成することで、単位面積（１ｍ2）当たりに形成される吸音孔Ｈの数は、８つとなっている。 〔conditions〕
(1) Material of the intermediate member 10 and the sheet member 20: polypropylene (PP)
(2) Material of insulator 40: Urethane (3) Diameter of sound absorbing hole H: 2 mm
(4) Pitch α of the sound absorbing holes H: 40 mm
(5) Pitch β of the sound absorbing holes H: 30 mm
(6) Height of convex parts 13 and 14: 5.5 mm
(7) Diameter of tip surfaces of convex portions 13 and 14: 2 mm
(8) Diameter of base end portion of convex portions 13 and 14 (diameter of opening): 7 mm
(9) Pitch of convex portions 13 and 14: 11 mm
(10) Thickness of the thin plates 11 and 12: 0.5 mm
(11) Thickness of the sheet member 20: 5.5 mm
(12) Thickness of the flooring member 30: 2 mm
(13) Thickness of the insulator 40: 20 mm
The number of sound absorbing holes H formed per unit area (1 m 2 ) is eight by forming the sound absorbing holes H at the pitches α and β.

〔実験結果〕
続いて、前記した条件となるフロアシート１による吸音性能について、図４を参照して説明する。
図４に示すように、このフロアシート１（吸音孔Ｈ有り）によれば、吸音孔Ｈがないフロアシート（吸音孔Ｈ以外は、前記実施形態のフロアシート１と同様の構成となるフロアシート）に比べ、周波数が約８００〜４０００Ｈｚ（ヘルツ）となる音に関する吸音性能が向上していることが分かる。特に、１０００〜２０００Ｈｚの音に関しては、吸音孔Ｈがないフロアシートの吸音性能よりも、本実施例のフロアシート１の吸音性能の方が約２０％以上も向上することが分かる。ここで、吸音性能は、音の吸収率（吸収された音のエネルギ／発生した音のエネルギ）のことを意味する。 〔Experimental result〕
Next, the sound absorption performance of the floor sheet 1 that satisfies the above-described conditions will be described with reference to FIG.
As shown in FIG. 4, according to this floor sheet 1 (with sound absorbing holes H), a floor sheet having no sound absorbing holes H (a floor sheet having the same configuration as the floor sheet 1 of the above embodiment except for the sound absorbing holes H) is provided. It can be seen that the sound-absorbing performance related to the sound having a frequency of about 800 to 4000 Hz (Hertz) is improved. In particular, regarding sound of 1000 to 2000 Hz, it can be seen that the sound absorbing performance of the floor sheet 1 of this example is improved by about 20% or more than the sound absorbing performance of the floor sheet without the sound absorbing holes H. Here, the sound absorption performance means a sound absorption rate (absorbed sound energy / generated sound energy).

以上より、本実施例によれば、フロアシート１に所定の吸音孔Ｈを開けることで、所定の周波数の音を効率良く吸収することが確認された。   From the above, according to the present example, it was confirmed that by opening the predetermined sound absorption hole H in the floor sheet 1, the sound of the predetermined frequency is efficiently absorbed.

本実施形態に係るフロアシートが配設された車両を示す斜視図である。It is a perspective view which shows the vehicle by which the floor seat which concerns on this embodiment is arrange | positioned. 図１のフロアシートの詳細を示す分解斜視図である。It is a disassembled perspective view which shows the detail of the floor sheet of FIG. 図２のフロアシートを重ね合わせた状態を示す斜視図（ａ）と、図３（ａ）のＡ−Ａ断面図（ｂ）である。It is the perspective view (a) which shows the state which accumulated the floor sheet of FIG. 2, and AA sectional drawing (b) of FIG. 3 (a). フロアシートの吸音性能を示すグラフである。It is a graph which shows the sound absorption performance of a floor sheet.

符号の説明Explanation of symbols

１ フロアシート
２ ハニカム構造体
１０ 中間部材
１１，１２ 薄板
１１ａ 平板部
１３，１４ 凸部
２０ シート部材
３０ フローリング部材
４０ インシュレータ
Ｈ 吸音孔
Ｈ１ 第１吸音孔
Ｈ２ 第２吸音孔
Ｈ３ 第３吸音孔 DESCRIPTION OF SYMBOLS 1 Floor sheet 2 Honeycomb structure 10 Intermediate member 11,12 Thin plate 11a Flat plate part 13,14 Convex part 20 Sheet member 30 Flooring member 40 Insulator H Sound absorption hole H1 First sound absorption hole H2 Second sound absorption hole H3 Third sound absorption hole

Claims (4)

複数の中空の凸部が形成された少なくとも一つの薄板からなる中間部材と、この中間部材を挟み込む二つのシート部材とを備えるハニカム構造体を含んで構成されることを特徴とするフロアシート。   A floor sheet comprising a honeycomb structure including an intermediate member made of at least one thin plate on which a plurality of hollow protrusions are formed, and two sheet members sandwiching the intermediate member. 請求項１に記載のフロアシートであって、
前記中間部材は、前記薄板を複数有し、各薄板に形成された複数の前記凸部が互いに当接されて構成されていることを特徴とするフロアシート。 The floor sheet according to claim 1,
The intermediate member includes a plurality of the thin plates, and the plurality of convex portions formed on the thin plates are in contact with each other. 請求項１または請求項２に記載のフロアシートであって、
前記フロアシートの少なくとも一面側に、外部とハニカム構造体内の空間とに連通する連通孔を開けたことを特徴とするフロアシート。 The floor sheet according to claim 1 or 2,
A floor sheet, wherein a communication hole communicating with the outside and a space in the honeycomb structure is formed on at least one surface side of the floor sheet. 請求項１〜請求項３のうちのいずれか１項に記載のフロアシートであって、
前記連通孔が開けられたシート部材は、前記連通孔に開口する貫通孔を有した木材または樹脂からなる表面材を備えることを特徴とするフロアシート。 It is a floor sheet given in any 1 paragraph of Claims 1-3,
The sheet member having the communication hole is provided with a surface material made of wood or resin having a through hole that opens to the communication hole.
JP2004289818A 2004-10-01 2004-10-01 Floor sheet Pending JP2006103403A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2004289818A JP2006103403A (en) 2004-10-01 2004-10-01 Floor sheet
US11/220,675 US20060080941A1 (en) 2004-10-01 2005-09-08 Floor sheet assembly
CNA2005101058744A CN1755044A (en) 2004-10-01 2005-09-29 Floor sheet assembly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2004289818A JP2006103403A (en) 2004-10-01 2004-10-01 Floor sheet

Publications (1)

Publication Number Publication Date
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US (1) US20060080941A1 (en)
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