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JP2016222190A - Roof heat insulation material and roof heat insulation structure using the same - Google Patents

Roof heat insulation material and roof heat insulation structure using the same Download PDF

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JP2016222190A
JP2016222190A JP2015112833A JP2015112833A JP2016222190A JP 2016222190 A JP2016222190 A JP 2016222190A JP 2015112833 A JP2015112833 A JP 2015112833A JP 2015112833 A JP2015112833 A JP 2015112833A JP 2016222190 A JP2016222190 A JP 2016222190A
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roof
heat insulating
insulating material
layer
roof heat
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勇輝 小倉
Yuki Ogura
勇輝 小倉
翔太 中司
Shota Nakatsukasa
翔太 中司
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Toyota Motor East Japan Inc
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Toyota Motor East Japan Inc
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Abstract

PROBLEM TO BE SOLVED: To exert heat reflecting effect and acoustic insulation effect and suppress an increase in cost in a roof heat insulation material disposed between a vehicle roof panel and a vehicle interior material.SOLUTION: The roof heat insulation material 1 disposed between the vehicle interior material 60 and the roof panel 51 includes: an air chamber layer 2 having multiple air chambers; and a pair of aluminum sheet layers 3, 4 holding the air chamber layer from upper and lower sides. In the air chamber layer, a sheet having multiple air chambers disposed in a staggered arrangement manner in a face direction is laminated in at least two-layer and the sheets are stacked vertically so that positions of air chambers are shifted from one another.SELECTED DRAWING: Figure 1

Description

本発明は、ルーフ断熱材及びそれを用いたルーフ断熱構造に関し、特に車両のルーフパネルと内装材との間に配置することにより優れた熱反射性と遮音性とが得られるルーフ断熱材及びそれを用いたルーフ断熱構造に関する。   TECHNICAL FIELD The present invention relates to a roof heat insulating material and a roof heat insulating structure using the same, and in particular, a roof heat insulating material capable of obtaining excellent heat reflectivity and sound insulation by being disposed between a vehicle roof panel and an interior material. The present invention relates to a heat insulating structure using a roof.

自動車のルーフは、基本的な構成として、図6(a)に示すようにルーフパネル51とその内側に配置された内装材60とを有している。しかしながら、夏場などには自動車のルーフに対し、太陽からの強い輻射熱が照射され、その熱がルーフを通過して車室内に進入し、室内温度に大きく影響を与えるという課題がある。反対に冬場などには、車外の冷気がルーフを通過して車室内に進入し、室内温度に影響を与えるという課題がある。   As shown in FIG. 6A, the roof of an automobile has a roof panel 51 and an interior material 60 arranged inside the roof panel 51 as a basic configuration. However, there is a problem that in summertime, the roof of an automobile is irradiated with strong radiant heat from the sun, and the heat passes through the roof and enters the passenger compartment, greatly affecting the indoor temperature. On the other hand, in winter, there is a problem that cold air outside the vehicle passes through the roof and enters the vehicle interior, which affects the indoor temperature.

乗員ができる解決策として、エアコンを用いればよいのであるが、外気(太陽の輻射熱、冷気など)の影響を大きく受けているときには、エアコンの出力が大きくなり、燃費性能が低下するという課題がある。
一方、自動車メーカーにおいては、外気の影響を少しでも低減するため、ルーフパネル51と内装材52との間に、図6(b)に示すようにフェルト材、或いはシンサレート(登録商標)などの高機能中綿素材からなる断熱材55(サイレンサとも呼ぶ)を配置し、熱エネルギーの通過を低減するようにしている。
A solution that can be used by passengers is to use an air conditioner, but when it is greatly affected by outside air (solar radiant heat, cold air, etc.), there is a problem that the output of the air conditioner increases and the fuel efficiency decreases. .
On the other hand, in an automobile manufacturer, in order to reduce the influence of outside air as much as possible, between the roof panel 51 and the interior material 52, as shown in FIG. A heat insulating material 55 (also called a silencer) made of a functional batting material is disposed to reduce the passage of heat energy.

実際には、図7に模式的に示すように、ルーフ内装材60に対応するルーフには、車幅方向に掛け渡されたルーフクロスメンバ(ルーフリーンフォースメント)61(破線で示す)が車両前後方向に沿って複数本配置されているため、断熱材55は、それらを避けるように車幅方向に長尺形状として配置されている。   Actually, as schematically shown in FIG. 7, the roof corresponding to the roof interior material 60 is provided with a roof cross member (roof-free force) 61 (shown by a broken line) spanned in the vehicle width direction. Since a plurality of the heat insulating materials 55 are arranged along the front-rear direction, the heat insulating material 55 is arranged as a long shape in the vehicle width direction so as to avoid them.

しかしながら、前記ルーフパネルと内装材との間に、単にフェルト材等からなる断熱材55を配置する場合、図6(b)に矢印で示すように、輻射熱等の熱エネルギーが多分に通過し、車内への進入を充分に防ぐことができなかった。
また、図6(b)に示すようなルーフの断熱構造にあっては、断熱機能だけでなく、遮音性能に優れるものが求められていた。
However, when a heat insulating material 55 made of a felt material or the like is disposed between the roof panel and the interior material, as shown by an arrow in FIG. The entry into the car could not be prevented sufficiently.
Moreover, in the heat insulation structure of the roof as shown in FIG.6 (b), the thing excellent in not only the heat insulation function but sound insulation performance was calculated | required.

このような課題に対し、特許文献1には、車両用の内装材において、最外層を除く少なくとも一層が、熱線反射機能を有する複数の層からなる構造が開示されている。
この構成によれば、図6(b)に示した構成よりも、より外部からの熱エネルギーの進入を効果的に防ぐことができる。また、特許文献1にあっては、車両用内装材が遮音層を有する層構造が開示され、吸音遮音に効果を奏することが記載されている。
For such a problem, Patent Document 1 discloses a structure in which at least one layer excluding the outermost layer is composed of a plurality of layers having a heat ray reflecting function in an interior material for a vehicle.
According to this configuration, it is possible to effectively prevent the entry of heat energy from the outside as compared with the configuration illustrated in FIG. Further, Patent Document 1 discloses a layer structure in which a vehicle interior material has a sound insulation layer, and describes that it has an effect on sound absorption sound insulation.

特開2003−237492号公報JP 2003-237492 A

ところで、特許文献1に開示の車両用内装材において、充分な熱遮断性と遮音性とを得るには、図7に示したように断熱材55を配置する複数の箇所(図では5箇所)の全てに熱反射機能層と遮音層とを設ける必要がある。
しかしながら、前記熱反射機能層には、アルミシート等の金属層が好適であり、多量に用いる必要があるため、コストが高くなるという課題があった。
By the way, in the vehicle interior material disclosed in Patent Document 1, in order to obtain sufficient heat insulation and sound insulation, a plurality of locations (5 locations in the figure) where the heat insulating material 55 is disposed as shown in FIG. It is necessary to provide a heat reflection functional layer and a sound insulation layer in all of the above.
However, a metal layer such as an aluminum sheet is suitable for the heat reflection functional layer, and a large amount needs to be used.

本発明は、前記した点に着目してなされたものであり、車両のルーフパネルと車両内装材との間に配されるルーフ断熱材において、熱反射性及び遮音性に優れ、コスト上昇を抑えることのできるルーフ断熱材及びそれを用いたルーフ断熱構造を提供することを目的とする。   The present invention has been made paying attention to the above points, and in a heat insulating material for a roof, which is disposed between a vehicle roof panel and a vehicle interior material, has excellent heat reflectivity and sound insulation, and suppresses an increase in cost. An object of the present invention is to provide a roof heat insulating material and a roof heat insulating structure using the same.

前記した課題を解決するために、本発明に係るルーフ断熱材は、車両の内装材とルーフパネルとの間に配置されるルーフ断熱材であって、複数の空気室を有する空気室層と、前記空気室層を上下側から狭持する一対のアルミシート層とを備え、前記空気室層は、面方向に千鳥状に配置された複数の空気室を有するシートが、少なくとも二層に積層され、上下に重なる前記シートにおいて、空気室の位置がずれるように配置されていることに特徴を有する。   In order to solve the above-described problem, a roof heat insulating material according to the present invention is a roof heat insulating material disposed between an interior material of a vehicle and a roof panel, and an air chamber layer having a plurality of air chambers, A pair of aluminum sheet layers sandwiching the air chamber layer from above and below, and the air chamber layer is formed by laminating at least two layers of sheets having a plurality of air chambers arranged in a staggered manner in the surface direction. In the above-described sheets that overlap one above the other, the air chambers are arranged so that the positions thereof are shifted.

このように構成されたルーフ断熱材をルーフパネルと内装材との間に配置することにより、充分な断熱効果及び遮音効果を得ることができる。
また、その場合、ルーフの一部(例えばルーフ全体の30%程度)に前記ルーフ断熱材を配置すればよいため、従来のようにルーフの略全体にアルミシートなどの金属層を形成するよりもアルミシートの使用面積が少なくて済むため、コストを抑えることができる。
By disposing the thus configured roof heat insulating material between the roof panel and the interior material, a sufficient heat insulating effect and sound insulating effect can be obtained.
In this case, the roof heat insulating material may be disposed on a part of the roof (for example, about 30% of the entire roof), so that a metal layer such as an aluminum sheet is formed on substantially the entire roof as in the prior art. Since the use area of the aluminum sheet is small, the cost can be suppressed.

また、前記した課題を解決するために、本発明に係るルーフ断熱構造は、前記したルーフ断熱材を用いるルーフ断熱構造であって、前記ルーフ断熱材と、前記ルーフ断熱材上に配置されるフェルト材からなるサイレンサ層とを備え、前記ルーフパネルと前記内装材との間には、少なくとも前記ルーフ断熱材と前記サイレンサ層とが配置されることに特徴を有する。   In order to solve the above-described problem, a roof heat insulating structure according to the present invention is a roof heat insulating structure using the above-described roof heat insulating material, and the roof heat insulating material and the felt disposed on the roof heat insulating material. A silencer layer made of a material, and at least the roof heat insulating material and the silencer layer are arranged between the roof panel and the interior material.

このように構成されたルーフ断熱構造によれば、充分な断熱効果及び遮音効果を得ることができる。
また、その場合、ルーフの一部(例えばルーフ全体の30%程度)に前記ルーフ断熱構造を配置すればよいため、従来のようにルーフの略全体にアルミシートなどの金属層を形成するよりもアルミシートやフェルト等のサイレンサの使用面積が少なくて済み、コストを抑えることができる。
According to the roof heat insulation structure comprised in this way, sufficient heat insulation effect and sound insulation effect can be acquired.
In this case, the roof heat insulating structure may be disposed on a part of the roof (for example, about 30% of the entire roof), so that a metal layer such as an aluminum sheet is formed on substantially the entire roof as in the prior art. The area used for silencers such as aluminum sheets and felt is small, and costs can be reduced.

本発明によれば、車両のルーフパネルと車両内装材との間に配されるルーフ断熱材において、優れた熱反射性及び遮音性を奏することができ、コスト上昇を抑えることができる。   ADVANTAGE OF THE INVENTION According to this invention, in the roof heat insulating material distribute | arranged between the roof panel of a vehicle, and a vehicle interior material, the outstanding heat reflectivity and sound insulation can be show | played, and a cost rise can be suppressed.

図1は、本発明に係るルーフ断熱材の断面図である。FIG. 1 is a cross-sectional view of a roof heat insulating material according to the present invention. 図2は、図1のルーフ断熱材を用いたルーフ断熱構造の断面図である。FIG. 2 is a cross-sectional view of a roof heat insulating structure using the roof heat insulating material of FIG. 図3は、内装材の形状を模式的に示す平面図であって、ルーフの一部(3箇所)に配置する断熱材の位置を示す図である。FIG. 3 is a plan view schematically showing the shape of the interior material, and is a view showing the position of the heat insulating material arranged at a part (three places) of the roof. 図4は、実施例の実験1の結果を示すグラフである。FIG. 4 is a graph showing the results of Experiment 1 of the example. 図5は、実施例の実験2の結果を示すグラフである。FIG. 5 is a graph showing the results of Experiment 2 of the example. 図6(a)、図6(b)は、従来のルーフ構造を示す断面図である。6 (a) and 6 (b) are cross-sectional views showing a conventional roof structure. 図7は、内装材の形状を模式的に示す平面図であって、ルーフの略全体(5箇所)に配置する断熱材の位置を示す図である。FIG. 7 is a plan view schematically showing the shape of the interior material, and is a view showing the position of the heat insulating material disposed on substantially the entire roof (five places).

以下、本発明にかかるルーフ断熱材及びそれを用いたルーフ断熱構造に係る実施の形態につき、図面に基づいて説明する。図1は、本発明に係るルーフ断熱材の断面図であり、図2は、図1のルーフ断熱材を用いたルーフ断熱構造の断面図である。   DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a roof heat insulating material and a roof heat insulating structure using the same according to the present invention will be described based on the drawings. FIG. 1 is a cross-sectional view of a roof heat insulating material according to the present invention, and FIG. 2 is a cross-sectional view of a roof heat insulating structure using the roof heat insulating material of FIG.

図1に示すルーフ断熱材1は、空気室層2の上下面に、金属層3、4がそれぞれ配置されている。前記空気室層2は、複数の円柱状の空気室が千鳥状に配設されたシートが、例えば二層に積層されてなる。尚、二層に積層されたシート間において、望ましくは千鳥状の空気室の位置が互いにずれるように配置される。それにより層の面方向において、複数の空気室をより均一に配置することができる。
また、前記金属層3、4は、好ましくはアルミシート層(アルミ箔)からなる。即ち、本発明のルーフ断熱材1は、一対の金属層3、4により空気室層2を狭持した構成となる。
In the roof heat insulating material 1 shown in FIG. 1, metal layers 3 and 4 are respectively disposed on the upper and lower surfaces of the air chamber layer 2. The air chamber layer 2 is formed by laminating a plurality of cylindrical air chambers, for example, in two layers. It should be noted that the staggered air chambers are preferably disposed so that the positions of the staggered air chambers are shifted from each other between the sheets stacked in two layers. Thereby, a plurality of air chambers can be arranged more uniformly in the plane direction of the layer.
The metal layers 3 and 4 are preferably made of an aluminum sheet layer (aluminum foil). That is, the roof heat insulating material 1 of the present invention has a configuration in which the air chamber layer 2 is held between the pair of metal layers 3 and 4.

前記ルーフ断熱材1をルーフ断熱層に用いる場合、図2に示すようにルーフ断熱材1の上にPETフェルト等からなるサイレンサ層7を接着剤で接着し、これを図3に示す車幅方向に長尺な形状の断熱材10として例えば3枚用意する。
次いで、内装材60の裏面(図2では上面)において、ルーフの前記クロスメンバ61を避けるようにして、それぞれ所定位置に前記3枚の断熱材10を接着剤により接着する。
そして、前記断熱材10を接着した内装材60の裏側面を、ルーフパネル51に圧着し、図2のようなルーフ断熱層が形成される。
When the roof heat insulating material 1 is used for a roof heat insulating layer, a silencer layer 7 made of PET felt or the like is bonded on the roof heat insulating material 1 with an adhesive as shown in FIG. 2, and this is shown in FIG. For example, three sheets of the heat insulating material 10 having a long shape are prepared.
Next, on the back surface (upper surface in FIG. 2) of the interior material 60, the three heat insulating materials 10 are adhered to each predetermined position with an adhesive so as to avoid the cross member 61 of the roof.
Then, the back side surface of the interior material 60 to which the heat insulating material 10 is bonded is pressure-bonded to the roof panel 51 to form a roof heat insulating layer as shown in FIG.

尚、前記のように断熱材10の配置箇所をルーフの3箇所としたのは、ルーフ面積に対し、20%程度の領域にルーフ断熱材1を含む断熱材10を配置することにより充分な断熱、遮音効果を得ることができるためである。
即ち、前記ルーフ断熱構造は、空気室層2の上下面を、アルミシートなどの金属層3、4により狭持した構成のルーフ断熱材1を有するため、単に一層の金属層を有するような従来の断熱材の構成よりも格段に断熱効果及び遮音効果に優れる。
このため、図7に示したようにルーフの5箇所に断熱材を用いたような略ルーフ全体の領域(ルーフ面積に対し約30%)ではなく、図3に示すように断熱材10を配置した3つの領域(ルーフ面積に対し約20%)により充分な断熱効果及び遮音効果を得ることができる。
In addition, the arrangement | positioning location of the heat insulating material 10 was made into three places of the roof as mentioned above, and sufficient heat insulation is carried out by arrange | positioning the heat insulating material 10 containing the roof heat insulating material 1 in the area | region of about 20% with respect to a roof area. This is because a sound insulation effect can be obtained.
That is, since the roof heat insulating structure has the roof heat insulating material 1 having the structure in which the upper and lower surfaces of the air chamber layer 2 are sandwiched by the metal layers 3 and 4 such as aluminum sheets, the conventional roof heat insulating structure has a single metal layer. The heat insulation effect and the sound insulation effect are much superior to the structure of the heat insulation material.
For this reason, as shown in FIG. 7, the heat insulating material 10 is arranged as shown in FIG. 3 instead of the area of the entire roof (about 30% of the roof area) where heat insulating material is used at five locations on the roof. A sufficient heat insulation effect and sound insulation effect can be obtained by the three regions (about 20% with respect to the roof area).

これにより、例えば夏期においては、車外より車内に進入しようとする熱エネルギーや外部の音を、金属層3、5により大幅に反射することができる。より詳しくは、前記熱エネルギーや外部の音が金属層3を通過しても、空気室層2が存在するため、その空気層により減衰させ、さらに金属層5により反射して、車内へ伝達し難くすることができる。
また、冬期においては、車内から放出される熱エネルギーを、金属層5により反射することで、熱損失を低減することができる。
Thereby, in summer, for example, the heat energy and external sound that are about to enter the vehicle from outside the vehicle can be reflected greatly by the metal layers 3 and 5. More specifically, even if the thermal energy or external sound passes through the metal layer 3, the air chamber layer 2 is present, so that it is attenuated by the air layer and further reflected by the metal layer 5 to be transmitted into the vehicle. Can be difficult.
Further, in winter, the heat loss can be reduced by reflecting the heat energy released from the vehicle by the metal layer 5.

以上のように、本発明に係る実施の形態によれば、空気室層2をアルミシート層(金属層)で狭持した断熱材1を、サイレンサ層7を介してルーフパネル51の下に配置し、また、断熱材1の下に内装材60を配置することによりルーフ断熱層11を構成した。
これにより、このルーフ断熱層11をルーフ面積の少なくとも約20%に配置することで、充分な断熱効果及び遮音効果が得られる。
また、従来のようにルーフの略全体にアルミシートなどを形成するよりもアルミシート及びフェルト等のサイレンサの使用面積が少なくて済むため、コストを抑えることができる。
As described above, according to the embodiment of the present invention, the heat insulating material 1 in which the air chamber layer 2 is sandwiched by the aluminum sheet layer (metal layer) is disposed under the roof panel 51 via the silencer layer 7. In addition, the roof heat insulating layer 11 was configured by disposing the interior material 60 under the heat insulating material 1.
Thereby, a sufficient heat insulation effect and sound insulation effect can be obtained by arranging the roof heat insulation layer 11 in at least about 20% of the roof area.
Further, since the use area of a silencer such as an aluminum sheet and a felt can be reduced compared to the case where an aluminum sheet or the like is formed on substantially the entire roof as in the prior art, the cost can be reduced.

尚、前記実施の形態においては、ルーフ断熱層11は、本発明のルーフ断熱材1の直上にサイレンサ層7とルーフパネル51が配置され、ルーフ断熱材1の直下に内装材60が配置される構成としたが、その構成に限定されるものではない。
即ち、少なくともルーフ断熱材1の直上にサイレンサ層(フェルト等からなる断熱材でよい)を配置して、それをルーフパネル51と内装材60との間の積層構造の中に含めばよく、例えば、前記サイレンサ層とルーフパネルとの間に、さらに他の機能層(前記サイレンサ層と異なる素材の層など)を配置してもよい。
In the embodiment, the roof heat insulating layer 11 includes the silencer layer 7 and the roof panel 51 disposed immediately above the roof heat insulating material 1 of the present invention, and the interior material 60 disposed directly below the roof heat insulating material 1. Although it was set as the structure, it is not limited to the structure.
That is, a silencer layer (which may be a heat insulating material made of felt or the like) is disposed at least directly above the roof heat insulating material 1 and included in the laminated structure between the roof panel 51 and the interior material 60. Further, another functional layer (such as a layer made of a material different from the silencer layer) may be disposed between the silencer layer and the roof panel.

また、前記実施の形態において、空気室層2は、前記のように複数の円柱状の空気室が千鳥状に配設されたシートを二層に積層するものとした。しかしながら、その形態に限らず、前記シートをより多層に重ねてもよく、その場合には、空気室が厚さ方向に重なって空気層が厚くなるため、より断熱効果を得ることができる。   Moreover, in the said embodiment, the air chamber layer 2 shall laminate | stack the sheet | seat in which the several columnar air chamber was arrange | positioned in zigzag form as mentioned above in two layers. However, the sheet is not limited to this form, and the sheets may be stacked in multiple layers. In that case, the air chambers overlap in the thickness direction and the air layer becomes thicker, so that a more heat insulating effect can be obtained.

本発明に係るルーフ断熱材及びそれを用いたルーフ断熱層について、実施例に基づきさらに説明する。本実施例では、前記実施の形態に示したルーフ断熱材を用いてルーフ断熱層を形成し、実験を行うことにより、本発明の効果について検証した。   The roof heat insulating material which concerns on this invention, and the roof heat insulation layer using the same are further demonstrated based on an Example. In this example, the effect of the present invention was verified by forming a roof heat insulating layer using the roof heat insulating material described in the above embodiment and conducting an experiment.

[実験1]
実験1では、本発明のルーフ断熱材をルーフパネルに用いてルーフ断熱構造を形成した自動車を使用し、実用燃費(km/L)を測定した。実施例1として、図7に示すようにルーフの5箇所に本発明のルーフ断熱材を用いた車両を使用した。また、実施例2として、図3に示すようにルーフの3箇所に本発明のルーフ断熱材を用いた車両を使用した。また、比較例1として、図7に示すようにルーフの5箇所に高機能中綿素材をサイレンサ層として用いた車両を使用した。
[Experiment 1]
In Experiment 1, an automobile in which a roof heat insulating structure was formed using the roof heat insulating material of the present invention for a roof panel was used, and the practical fuel consumption (km / L) was measured. As Example 1, as shown in FIG. 7, a vehicle using the roof heat insulating material of the present invention at five locations on the roof was used. Further, as Example 2, a vehicle using the roof heat insulating material of the present invention at three locations on the roof as shown in FIG. 3 was used. Moreover, as Comparative Example 1, as shown in FIG. 7, a vehicle using high-performance batting material as a silencer layer at five locations on the roof was used.

図4に、実験1の結果を棒グラフとして示す。図4のグラフに示すように、比較例1(ルーフの5箇所に高機能中綿素材)の燃費と、実施例2(ルーフの3箇所に本発明のルーフ断熱材)の燃費は同等になった。また、実施例1(ルーフの5箇所に本発明のルーフ断熱材)の場合には、比較例1、実施例2の場合よりも燃費が0.4%向上した。
この結果から、本発明のルーフ断熱材を用いることにより、エアコン使用時の燃費が格段に向上することを確認した。また、従来と同等の性能を求めるなら、実施例2のようにルーフの3箇所に本発明のルーフ断熱材を用いればよいことがわかった。
FIG. 4 shows the results of Experiment 1 as a bar graph. As shown in the graph of FIG. 4, the fuel efficiency of Comparative Example 1 (high performance batting material at five locations on the roof) and the fuel efficiency of Example 2 (the roof heat insulating material of the present invention at three locations on the roof) are equivalent. . Further, in the case of Example 1 (the roof heat insulating material of the present invention at five locations on the roof), the fuel efficiency was improved by 0.4% compared to the case of Comparative Example 1 and Example 2.
From this result, it was confirmed that by using the roof heat insulating material of the present invention, the fuel efficiency when using the air conditioner is remarkably improved. In addition, it was found that the roof heat insulating material of the present invention may be used at three locations of the roof as in Example 2 if the same performance as the conventional one is required.

[実験2]
実験2では、車外から車室内に進入する音の遮音性について検証した。実施例3として、ルーフの5箇所に本発明のルーフ断熱材を用いた車両を使用した。比較例2として、ルーフの5箇所に従来の高機能中綿素材を用いた車両を使用した。
図5に、実験2の結果を折れ線グラフとして示す。図5のグラフに示すように、従来の比較例2の場合よりも実施例3において遮音性効果が得られた。具体的には、実施例3では、比較例2に対しOA(オーバーオール)値で−2.1dB程度と格段に遮音性が高い結果となった。
[Experiment 2]
In Experiment 2, the sound insulation property of the sound entering the vehicle interior from outside the vehicle was verified. As Example 3, a vehicle using the roof heat insulating material of the present invention at five locations on the roof was used. As Comparative Example 2, a vehicle using conventional high-performance batting material at five locations on the roof was used.
FIG. 5 shows the results of Experiment 2 as a line graph. As shown in the graph of FIG. 5, the sound insulation effect was obtained in Example 3 as compared with the case of the conventional Comparative Example 2. Specifically, in Example 3, the sound insulation was significantly higher than that of Comparative Example 2 in terms of an OA (overall) value of about -2.1 dB.

[まとめ]
前記のように本実施例によれば、本発明に係るルーフ断熱材及びそれを用いたルーフ断熱構造により、従来よりも格段に断熱性及び遮音性を向上でき、燃費向上にも大きく寄与できることを確認した。
[Summary]
As described above, according to the present embodiment, the roof heat insulating material according to the present invention and the roof heat insulating structure using the same can significantly improve heat insulation and sound insulation than before, and can greatly contribute to improvement of fuel consumption. confirmed.

1 ルーフ断熱材
2 空気室層
3 金属層
4 金属層
7 サイレンサ層
11 ルーフ断熱層
51 ルーフパネル
60 内装材
DESCRIPTION OF SYMBOLS 1 Roof heat insulating material 2 Air chamber layer 3 Metal layer 4 Metal layer 7 Silencer layer 11 Roof heat insulating layer 51 Roof panel 60 Interior material

Claims (2)

車両の内装材とルーフパネルとの間に配置されるルーフ断熱材であって、
複数の空気室を有する空気室層と、前記空気室層を上下側から狭持する一対のアルミシート層とを備え、
前記空気室層は、面方向に千鳥状に配置された複数の空気室を有するシートが、少なくとも二層に積層され、
上下に重なる前記シートにおいて、空気室の位置がずれるように配置されていることを特徴とするルーフ断熱材。
A roof heat insulating material disposed between a vehicle interior material and a roof panel,
An air chamber layer having a plurality of air chambers, and a pair of aluminum sheet layers sandwiching the air chamber layer from above and below,
The air chamber layer is a sheet having a plurality of air chambers arranged in a staggered pattern in the plane direction, and is laminated in at least two layers.
A roof heat insulating material, wherein the air chambers are arranged so that the positions of the air chambers are shifted in the upper and lower sheets.
前記請求項1に記載のルーフ断熱材を用いるルーフ断熱構造であって、
前記ルーフ断熱材と、前記ルーフ断熱材上に配置されるフェルト材からなるサイレンサ層とを備え、
前記ルーフパネルと前記内装材との間には、少なくとも前記ルーフ断熱材と前記サイレンサ層とが配置されることを特徴とするルーフ断熱構造。
A roof heat insulating structure using the roof heat insulating material according to claim 1,
The roof heat insulating material, and a silencer layer made of a felt material disposed on the roof heat insulating material,
At least the roof heat insulating material and the silencer layer are disposed between the roof panel and the interior material.
JP2015112833A 2015-06-03 2015-06-03 Roof heat insulation material and roof heat insulation structure using the same Pending JP2016222190A (en)

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Country Link
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113135152A (en) * 2021-03-12 2021-07-20 上海大学 Automobile noise reduction system
US12115705B2 (en) 2021-12-02 2024-10-15 Nishikawa Rubber Co., Ltd. Method of manufacturing soundproof material

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113135152A (en) * 2021-03-12 2021-07-20 上海大学 Automobile noise reduction system
US12115705B2 (en) 2021-12-02 2024-10-15 Nishikawa Rubber Co., Ltd. Method of manufacturing soundproof material

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