JP5872383B2 - Vehicle roof trim - Google Patents

Vehicle roof trim Download PDF

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JP5872383B2
JP5872383B2 JP2012121273A JP2012121273A JP5872383B2 JP 5872383 B2 JP5872383 B2 JP 5872383B2 JP 2012121273 A JP2012121273 A JP 2012121273A JP 2012121273 A JP2012121273 A JP 2012121273A JP 5872383 B2 JP5872383 B2 JP 5872383B2
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roof panel
roof
closed cell
vehicle
air
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JP2013244912A (en
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大樹 野村
大樹 野村
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Kasai Kogyo Co Ltd
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Kasai Kogyo Co Ltd
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Description

本発明は、車両用ルーフトリムに関するものである。   The present invention relates to a vehicle roof trim.

従来、車両の車室天井には、ルーフパネルＰの内側に、車両前方部、中央部、後方部に付設されたパネル補強用ルーフボウｒｂにより空間Ｓを隔てて、天井を形成するルーフトリム１が設けられ、車室内の保温性と共に外気からの遮熱性を確保し、車室内の居住性向上に寄与している（図５参照）。なお、ルーフパネルＰの内側に設けられるルーフボウｒｂは、例えば特許文献１で見られるように、車両のルーフの補強用として重要な部品の一つである。
図５では、車載エアコン（図示省略）の暖房運転によって、車室内が暖められると、ルーフトリム１も暖められ、ルーフトリム１とルーフパネルＰ間の空間Ｓの空気層も暖められる。空気層が暖められると、暖気が少なくとも車室内温度より低い外気に触れるルーフパネルＰの内面に触れることで、外気との熱交換がなされ、ルーフトリム１とルーフパネルＰ間の空間Ｓの空気層の温度が低下することとなる。 2. Description of the Related Art Conventionally, a roof trim 1 that forms a ceiling on a vehicle compartment ceiling of a vehicle is separated from a space S by panel reinforcing roof bows rb attached to the front, center, and rear portions of the vehicle. It is provided and heat insulation from the outside air is ensured as well as heat insulation in the passenger compartment, contributing to improving the comfort of the passenger compartment (see FIG. 5). Note that the roof bow rb provided inside the roof panel P is one of important parts for reinforcing the roof of the vehicle, as can be seen, for example, in Patent Document 1.
In FIG. 5, when the vehicle interior is warmed by the heating operation of the on-vehicle air conditioner (not shown), the roof trim 1 is also warmed, and the air layer in the space S between the roof trim 1 and the roof panel P is also warmed. When the air layer is warmed, heat exchange with the outside air is performed by touching the inner surface of the roof panel P where the warm air contacts at least the outside air lower than the vehicle interior temperature, and the air layer in the space S between the roof trim 1 and the roof panel P is formed. The temperature will decrease.

特開２００２−４６５４７号公報JP 2002-46547 A

このように、車載エアコン（図示省略）の暖房運転によって、車室内が暖められると、ルーフトリム１も暖められ、ルーフトリム１とルーフパネルＰ間の空間Ｓの空気層も暖められても、空間Ｓの空気層の暖気が車室内温度より低い外気に触れるルーフパネルＰの内面に触れることで、外気との熱交換がなされ、上記空間Ｓの空気層の温度が低下してしまうので、車室内温度を維持するには、空間Ｓの空気層の温度低下の損失を考慮して、車載エアコンを余分に運転せねばならず、消費電力の増大を招き、ひいては、燃費悪化の要因の一つともなっている。
本発明は、以上のような課題を改善するために提案されたものであって、ルーフトリムとルーフパネル間の空間の、ルーフパネルによる外気との熱交換による、温度の損失を抑制可能な車両用ルーフトリムを提供することを目的とする。 Thus, when the vehicle interior is warmed by the heating operation of the on-vehicle air conditioner (not shown), the roof trim 1 is also warmed, and even if the air layer in the space S between the roof trim 1 and the roof panel P is also warmed, Touching the inner surface of the roof panel P where the warm air in the S air layer is in contact with the outside air that is lower than the vehicle interior temperature causes heat exchange with the outside air, and the temperature of the air layer in the space S decreases. In order to maintain the temperature, it is necessary to operate the in-vehicle air conditioner in consideration of the loss of the temperature drop in the air layer of the space S, which leads to an increase in power consumption, which in turn is one of the causes of fuel consumption deterioration. ing.
The present invention has been proposed to improve the above-described problems, and is a vehicle capable of suppressing temperature loss due to heat exchange between the roof trim and the roof panel and the outside air by the roof panel. An object is to provide a roof trim.

上記の課題を改善するために、車両の車室天井に形成されたルーフパネルの内側に、空間を隔てて、天井面を形成する車両用ルーフトリムにおいて、前記ルーフパネルの車室側に、該ルーフパネルに付設した固定手段を介して、前記空間を隔てて設けた基材と、該基材を挟むように、表面側、裏面側に配置されたガラス繊維層と、前記ルーフパネルと反対側の前記ガラス繊維層に積層された表皮層と、前記ルーフパネル側の前記ガラス繊維層に積層された遮熱層と、前記基材の前記ルーフパネル側で、前記遮熱層の表面に、各々、空気が封入された多数の独立気泡室同士が壁で仕切られて、連続的に隙間なく積層された該独立気泡室を有する、独立気泡体と、を備え、前記独立気泡体を構成する前記独立気泡室により、前記ルーフパネルとの間に存在する前記空間の空気と、ルーフパネルとの間の熱交換を防止して、車室内と、前記ルーフパネルによる外気との熱交換を抑制する、ことを特徴とする。 In order to improve the above-described problem, in a vehicle roof trim that forms a ceiling surface with a space inside a roof panel formed on a ceiling of a vehicle compartment, a vehicle roof side of the roof panel includes the roof panel. via a fixing means and attached to the roof panel, a base material provided separating the space, so as to sandwich the base material, the surface side, and a glass fiber layer disposed on the back side, and the roof panel opposite A skin layer laminated on the glass fiber layer, a heat shielding layer laminated on the glass fiber layer on the roof panel side , and a surface of the heat shielding layer on the roof panel side of the substrate , A plurality of closed cell chambers filled with air are separated by walls and have the closed cell chambers that are continuously stacked without gaps. the closed cell chamber, and the roof panel And air in the space existing, to prevent heat exchange between the roof panel, suppressing the vehicle interior, the heat exchange with the outside air by the roof panel, characterized in that.

なお、前記独立気泡体は、気泡層からなる。   The closed cell body is composed of a bubble layer.

これにより、気泡層によって、ルーフパネルの車室側の空間の空気とルーフパネルとの熱交換がされないように、空気を閉じ込めることができる。
気泡層により閉じ込められた空気は対流する動きが抑制され、ルーフパネルとの熱交換がされないため、ルーフパネルの車室側の空間の温度損失を抑制することができる。 Thereby, air can be confined by the bubble layer so that heat exchange between the air in the space on the vehicle compartment side of the roof panel and the roof panel is not performed.
The air confined by the bubble layer is restrained from convection, and heat exchange with the roof panel is not performed, so that the temperature loss of the space on the vehicle compartment side of the roof panel can be suppressed.

本発明によれば、ルーフトリムとルーフパネル間の空間において、ルーフパネルによる外気との熱交換による、温度の損失を抑制可能な車両用ルーフトリムを提供することができる。 ADVANTAGE OF THE INVENTION According to this invention, the roof trim for vehicles which can suppress the loss of temperature by the heat exchange with the external air by a roof panel in the space between a roof trim and a roof panel can be provided.

本発明に係る車両用ルーフトリムの一例を示す平面図である。It is a top view which shows an example of the roof trim for vehicles which concerns on this invention. 図１に示す車両用ルーフトリムのＩＩ‐ＩＩ線に沿う、切断矢視図と要部を拡大した模式図である。It is the schematic diagram which expanded the cutting arrow line view and the principal part along the II-II line of the roof trim for vehicles shown in FIG. 本発明に係る車両用ルーフトリムと従来構造の車両用ルーフトリムの車両用パネルへ放出される熱量の比較を説明するグラフである。It is a graph explaining the comparison of the calorie | heat amount emitted to the vehicle panel of the vehicle roof trim which concerns on this invention, and the vehicle roof trim of the conventional structure. 本発明に係る車両用ルーフトリムにおける車室内温度と従来構造の車両用ルーフトリムにおける車室内温度とを比較して説明するためのグラフである。5 is a graph for comparing and explaining the vehicle interior temperature in the vehicle roof trim according to the present invention and the vehicle interior temperature in a vehicle roof trim having a conventional structure. 従来の車両用ルーフトリムの断面図とその車両用ルーフトリムと車両用パネルとの熱環境を説明するための図である。It is sectional drawing of the conventional vehicle roof trim, and the figure for demonstrating the thermal environment of the vehicle roof trim and vehicle panel.

以下、本発明に係る車両用ルーフトリムの実施形態を挙げ、添付図に基づいて説明する。なお、実施形態の説明の全体を通して同じ要素には同じ番号を付している。概要は以下のとおりである。
本発明における車両用ルーフトリムは、ルーフパネルの車室側に設けられ、車室内の天井面を形成するもので、基材と、基材のルーフパネル側に設けられ内部に気泡を含む気泡層と、ルーフパネルと気泡層の間に設けられ、ルーフパネルによる外気との熱交換を抑制する所定の空間と、を有する。 Hereinafter, an embodiment of a vehicle roof trim according to the present invention will be described with reference to the accompanying drawings. Note that the same number is assigned to the same element throughout the description of the embodiment. The outline is as follows.
The vehicle roof trim according to the present invention is provided on the vehicle compartment side of the roof panel and forms a ceiling surface in the vehicle interior. The base material and the bubble layer provided on the roof panel side of the substrate and containing bubbles therein. And a predetermined space that is provided between the roof panel and the bubble layer and suppresses heat exchange with the outside air by the roof panel.

（実施形態）
図１に車両用ルーフトリム１（以下、ルーフトリム１）を示す。このルーフトリム１は、平面視で略長方形を呈しており、図１は、ルーフパネルに対向する面側を示している。Ａ側は車両のフロントウインドウ側に向かって、対向するＢ側は、リアウインドウ側に向かって配置される。かかるルーフトリム１は、全体が施工される車両のルーフパネル形状に倣う形状に、Ａ側からＢ側に向かう軸方向に沿って、中央領域がルーフパネルに向かって盛り上がるトレイ形状に成形加工されている（後述）。 (Embodiment)
FIG. 1 shows a vehicle roof trim 1 (hereinafter, roof trim 1). The roof trim 1 has a substantially rectangular shape in plan view, and FIG. 1 shows the surface side facing the roof panel. The A side is arranged toward the front window side of the vehicle, and the opposite B side is arranged toward the rear window side. The roof trim 1 is formed and processed into a tray shape in which the central region rises toward the roof panel along the axial direction from the A side to the B side in a shape that follows the shape of the roof panel of the vehicle on which the entire construction is performed. (Described later).

ルーフトリム１のＡ側寄りの両側端部には、車両のフロントピラー（図示省略）に係合する凹角部１ａ、１ａが形成され、ルーフトリム１の縁部であるルーフトリム１の長手側の両側縁部の略中間部位には、車両のセンターピラー（図示省略）に係合するルーフトリム側縁の切欠き縁部１ｂ、１ｂが形成されている。 Recessed corner portions 1a and 1a that engage with a front pillar (not shown) of the vehicle are formed on both side ends of the roof trim 1 near the A side. Notch edges 1b and 1b on the side edge of the roof trim that engage with the center pillar (not shown) of the vehicle are formed at substantially intermediate portions of the side edges.

さらにルーフトリム１のＡ側寄りの縁部中央から両側の凹角部１ａ、１ａにかけて、サンバイザー配置成形部１ｃ、１ｃと、サンバイザー配置成形部１ｃ、１ｃ間にマップランプ取付穴１ｄと、中央領域の部位には、ルームランプ（図示省略）を取り付けるためのルームランプ取付穴１ｅ他、種々のＡｓｓｙ部品（図示省略）が設けられる。 Further, from the center of the edge near the A side of the roof trim 1 to the concave corners 1a and 1a on both sides, the map lamp mounting hole 1d and the center between the sun visor arrangement moldings 1c and 1c and the sun visor arrangement moldings 1c and 1c, In addition to the room lamp mounting hole 1e for mounting a room lamp (not shown), various Assy parts (not shown) are provided in the region.

そして以上のようなルーフトリム１は、図２に示すように、ルーフパネルＰの車室側に、ルーフパネルＰに付設されるルーフボウｒｂを介して所定の空間Ｓを隔てて設けられる。この空間Ｓは、ルーフパネルＰと独立気泡構造マット（気泡層）２の間に設けられ、ルーフパネルＰによる外気との熱交換を抑制する。ルーフパネルＰは、例えばアルミニウム合金製 (アルミニウム合金板製) または鋼製
(鋼板製) で構成することができ、外観形状が、車体幅方向や車体前後方向に、ゆるやかな凸面形状を有している。また、ルーフボウｒｂは、車体前部、中央部、さらには車体後部において車体幅方向にルーフパネルＰに周知の固定手段、例えば接着剤、ボルトやリベットなどの機械的接合、または溶接接合 (スポット溶接等) により一体的に固定されている。 As shown in FIG. 2, the roof trim 1 as described above is provided on the vehicle compartment side of the roof panel P with a predetermined space S interposed via a roof bow rb attached to the roof panel P. This space S is provided between the roof panel P and the closed cell structure mat (bubble layer) 2 and suppresses heat exchange with the outside air by the roof panel P. The roof panel P is made of, for example, aluminum alloy (made of aluminum alloy plate) or steel
It can be made of (made of steel plate), and the external shape has a gentle convex shape in the vehicle body width direction and the vehicle body longitudinal direction. The roof bow rb is a well-known fixing means such as an adhesive, a bolt or a rivet, or a welding joint (spot welding) in the vehicle body width direction in the vehicle body front, center, and vehicle rear. Etc.).

次に、ルーフトリム１の素材構成について説明すると、ルーフトリム１は、詳細な図示、説明は省略するが、例えば、ウレタン製の基材１１からなる。この基材１１を挟むように表面側、裏面側に配置される第１、第２のガラス繊維層（図示省略）と、車室側の第１ガラス繊維層に積層される表皮層（図示省略）と、ルーフパネルＰ側の第２ガラス繊維層に積層される非通気層（アルミニウムを蒸着させたＰＥＴフィルム）とで構成される。
非通気層は、例えばＰＰやＰＥＴのフィルム等で構成される。
かかるルーフトリム１は、上記の素材を成形金型（図示省略）の上型と下型との間に配置してホットプレス成形を行い、全ての層を一体化して所定形状のルーフトリム１を得ている。 Next, the material configuration of the roof trim 1 will be described. The roof trim 1 is made of, for example, a base material 11 made of urethane, although detailed illustration and description are omitted. First and second glass fiber layers (not shown) arranged on the front side and the back side so as to sandwich the base material 11, and a skin layer (not shown) laminated on the first glass fiber layer on the passenger compartment side ) And a non-breathable layer (PET film on which aluminum is deposited) laminated on the second glass fiber layer on the roof panel P side.
The non-breathing layer is made of, for example, PP or PET film.
Such a roof trim 1 is formed by placing the above-mentioned material between an upper mold and a lower mold of a molding die (not shown) and performing hot press molding, and integrating all layers into a roof trim 1 having a predetermined shape. It has gained.

そしてこのようなルーフトリム１に対し、基材１１のルーフパネルＰ側に、すなわち、ルーフパネルＰ側の第２ガラス繊維層に積層される遮熱層上に、上記成型工程後に、気泡層、すなわち独立気泡体２が積層されている。
かかる独立気泡体２は、表面に例えば径が５〜４０ｍｍ、高さが３〜１５ｍｍ程度の独立気泡室２ｂが隙間なく形成されているものである。なお、独立気泡体２の他に、気泡室同士が独立しているシートでいわゆるエアキャップ（登録商標：宇部フィルム（株））も用いることができる。エアキャップは基材にポリフィルムを貼り合せる際、独立気泡室を形成したものである。
多数の独立気泡室２ｂは、それぞれ気泡室中に空気を封入しており、気泡室同士が壁で仕切られている。
以上の独立気泡体２は、ルーフトリム１のルーフパネルＰ側の第２ガラス繊維層に積層される遮熱層全体（ここでは表面積が略２ｍ２）に積層されている。 And with respect to such a roof trim 1, on the roof panel P side of the base material 11, that is, on the heat shield layer laminated on the second glass fiber layer on the roof panel P side, after the molding step, a bubble layer, That is, the closed cells 2 are stacked.
The closed cell body 2 is formed with a closed cell chamber 2b having a diameter of about 5 to 40 mm and a height of about 3 to 15 mm on the surface without a gap. In addition to the closed cell body 2, a so-called air cap (registered trademark: Ube Film Co., Ltd.) can be used as a sheet in which the bubble chambers are independent from each other. The air cap forms a closed cell chamber when a poly film is bonded to a substrate.
The large number of independent bubble chambers 2b each enclose air in the bubble chambers, and the bubble chambers are partitioned by walls.
The above closed cell body 2 is laminated on the entire heat shielding layer (here, the surface area is approximately 2 m 2 ) laminated on the second glass fiber layer on the roof panel P side of the roof trim 1.

本実施形態に係るルーフトリム１は以上のように構成されるものであり、次に作用効果を説明する。
ルーフパネルＰの車室側に、ルーフボウｒｂを介して空間Ｓを隔ててルーフトリム１が装着されると、ルーフパネルＰの車室側の空間Ｓ内には、全体に亘って、ルーフトリム１における独立気泡体２の多数の独立気泡室２ｂが展開することとなる（図２参照）。 The roof trim 1 according to the present embodiment is configured as described above. Next, operational effects will be described.
When the roof trim 1 is mounted on the vehicle compartment side of the roof panel P across the space S via the roof bow rb, the roof trim 1 extends throughout the space S on the vehicle cabin side of the roof panel P. A large number of closed cell chambers 2b of the closed cell body 2 in FIG. 2 develop (see FIG. 2).

そこで、実際に、車室内で車載エアコン（図示省略）を運転し、独立気泡体２が全面的に積層されたルーフトリム１の効果を検証してみる。なお、ここでは、車載エアコンの暖房運転を挙げて説明する。
車載エアコンの暖房運転によって、車室内が暖められると、ルーフトリム１も暖められる。すると、独立気泡体２には、独立気泡体２を積層する非通気層から熱が伝わり、多数の独立気泡室２ｂ中の空気を暖めることとなる。さらに一部の熱は空間Ｓの空気層に伝わり、空気層が暖められる。かかる空気層は、外気に触れるルーフパネルＰの内面に触れることで、外気との熱交換がなされる。
その際、多数の独立気泡室２ｂ中に閉じ込められた暖気は対流する動きが抑制されるため、独立気泡室２ｂ内の空気はルーフパネルＰの内面に触れることはなく、外気との熱交換がなされない。結果、空間Ｓの空気の温度低下を抑制することができる。 Therefore, in practice, an on-vehicle air conditioner (not shown) is operated in the passenger compartment, and the effect of the roof trim 1 in which the closed cell bodies 2 are entirely laminated will be verified. Here, the heating operation of the in-vehicle air conditioner will be described as an example.
When the vehicle interior is warmed by the heating operation of the in-vehicle air conditioner, the roof trim 1 is also warmed. Then, heat is transmitted to the closed cell body 2 from the non-venting layer on which the closed cell body 2 is laminated, and the air in the multiple closed cell chambers 2b is warmed. Furthermore, part of the heat is transferred to the air layer in the space S, and the air layer is warmed. Such an air layer touches the inner surface of the roof panel P that is in contact with the outside air, whereby heat exchange with the outside air is performed.
At that time, since the convection movement of the warm air confined in many closed cell chambers 2b is suppressed, the air in the closed cell chambers 2b does not touch the inner surface of the roof panel P, and heat exchange with the outside air is not performed. Not done. As a result, the temperature drop of the air in the space S can be suppressed.

ここで、独立気泡体２が用いられていない従来のルーフトリムと独立気泡体２が用いられた本実施形態に係るルーフトリム１とにおいて、ルーフパネルＰ側に放出された熱量を比較してみる。なお、ルーフパネルＰ側に放出された熱量とは、ルーフトリム１全体（表面積が２ｍ２として）に与えられた熱量から独立気泡体２の独立気泡室２ｂに閉じ込められた熱量（空気の定積比熱×独立気泡の総体積×温度差）を差し引いた熱量Ｗ（ただし、ルーフトリム１の熱損失を除く）としている。
独立気泡室２ｂは、径が５〜４０ｍｍ、高さが３〜１５ｍｍ程の範囲で、複数の異なった大きさの独立気泡室２ｂからなる独立気泡体２（ｍ１、ｍ２、ｍ３、ｍ４、ｍ５、ｍ６）を用いて、ルーフパネルＰ側に放出された熱量Ｗを求めてみた。この場合、前述しているように、ルーフトリム１全体に独立気泡体２を積層したと仮定している。
このような、異なった大きさの独立気泡室２ｂからなる独立気泡体２を用いたルーフトリム１のルーフパネルＰ側に放出された熱量Ｗは、図３に示すとおりである。 Here, in the conventional roof trim in which the closed cell body 2 is not used and the roof trim 1 according to the present embodiment in which the closed cell body 2 is used, the amount of heat released to the roof panel P side is compared. . The amount of heat released to the roof panel P side means the amount of heat (constant volume of air) confined in the closed cell chamber 2b of the closed cell 2 from the amount of heat given to the entire roof trim 1 (surface area is 2 m 2 ). The amount of heat W (excluding the heat loss of the roof trim 1) is obtained by subtracting specific heat x total volume of closed cells x temperature difference.
The closed cell chamber 2b has a diameter of 5 to 40 mm and a height of about 3 to 15 mm, and the closed cell body 2 (m 1 , m 2 , m 3 , which is composed of a plurality of different size closed cell chambers 2b, m 4 , m 5 , m 6 ) were used to determine the amount of heat W released to the roof panel P side. In this case, as described above, it is assumed that the closed cell body 2 is laminated on the entire roof trim 1.
The amount of heat W released to the roof panel P side of the roof trim 1 using the closed cell body 2 including the closed cell chambers 2b having different sizes is as shown in FIG.

図から判るように、独立気泡体２が用いられていない従来のルーフトリムでは、熱量は略２９９Ｗで、本実施形態のルーフトリム１のうち、ｍ３の独立気泡体２を用いたルーフトリム１が、ルーフパネルＰ側に放出された熱量が１８６Ｗと、最も低く抑えられていることがわかる。
このように、本実施形態のルーフトリム１によれば、独立気泡室２ｂが適切な仕様のものを選択することによって、従来と比較して最大で、ルーフパネルＰ側に放出された熱量を略１１３Ｗ程、抑制することができる。 As can be seen from the figure, in the conventional roof trim in which the closed cell body 2 is not used, the heat amount is about 299 W, and the roof trim 1 using the m 3 closed cell body 2 in the roof trim 1 of the present embodiment. However, it can be seen that the amount of heat released to the roof panel P side is the lowest, 186 W.
As described above, according to the roof trim 1 of the present embodiment, by selecting a closed cell chamber 2b having an appropriate specification, the maximum amount of heat released to the roof panel P side can be reduced as compared with the conventional case. About 113 W can be suppressed.

そして、上述の仕様の独立気泡体２（ｍ１、ｍ２、ｍ３、ｍ４、ｍ５、ｍ６）を用いた場合、車室内温度は、図４に示すとおりとなる。なお、図４では、車載エアコンを運転することで、車室内温度が５０℃を超える値となっているが、独立気泡体２の熱放出を抑制する効果を検証するために、実験上で設定された値である。
図から判るように、独立気泡体２が用いられていない従来のルーフトリムを用いた場合の車室内温度に比較して、独立気泡体２（ｍ１、ｍ２、ｍ３、ｍ４、ｍ５、ｍ６）を用いた場合、いずれも車室内温度が上昇していることがわかる。これは、独立気泡体２を用いることによって、ルーフパネルＰ側に放出された熱量Ｗが抑制されることから車室内温度を高めることができることがわかる。この場合、車室内温度は、最低で２℃で、最大で６℃程上昇させることが可能となることがわかる。 When the closed cell body 2 (m 1 , m 2 , m 3 , m 4 , m 5 , m 6 ) having the above specifications is used, the vehicle interior temperature is as shown in FIG. In FIG. 4, the temperature in the passenger compartment exceeds 50 ° C. by operating the on-vehicle air conditioner. However, in order to verify the effect of suppressing the heat release of the closed cell body 2, it is set experimentally. Value.
As can be seen from the figure, the closed cell body 2 (m 1 , m 2 , m 3 , m 4 , m is compared with the cabin temperature when a conventional roof trim that does not use the closed cell body 2 is used. 5 and m 6 ), it can be seen that the vehicle interior temperature is increased. It can be seen that by using the closed cell body 2, the amount of heat W released to the roof panel P side is suppressed, so that the vehicle interior temperature can be increased. In this case, it can be seen that the vehicle interior temperature can be raised by a minimum of 2 ° C. and a maximum of 6 ° C.

以上、本実施形態に係るルーフトリム１について、車載エアコンの暖房運転時の作用について説明した。勿論、車載エアコンの冷房運転時においても、気泡層である、独立気泡体２の独立気泡室２ｂ内の空気はルーフパネルＰとの熱交換が阻止されるので、ルーフパネルによる外気との熱交換による、温度の損失を抑制することができる。   As described above, the roof trim 1 according to the present embodiment has been described with respect to the operation during the heating operation of the in-vehicle air conditioner. Of course, the air in the closed cell chamber 2b of the closed cell body 2, which is a bubble layer, is prevented from exchanging heat with the roof panel P even during the cooling operation of the on-vehicle air conditioner. The temperature loss can be suppressed.

また、独立気泡体２は、ルーフトリム１のルーフパネルＰ側の第２ガラス繊維層に積層される遮熱層に設けられるとしたが、これに限らず、基材１１内に、すなわち、第２ガラス繊維層と遮熱層間に配置するようにしてもよい。   In addition, the closed cell body 2 is provided in the heat shield layer laminated on the second glass fiber layer on the roof panel P side of the roof trim 1, but is not limited thereto, that is, in the base material 11, that is, the first You may make it arrange | position between 2 glass fiber layers and a heat shield layer.

１ ルーフトリム
１ａ 凹角部
１ｂ 切欠き縁部
１ｃ サンバイザー配置成形部
１ｄ マップランプ取付穴
１ｅ ルームランプ取付穴
１１ 基材
２ 独立気泡体
２ｂ 独立気泡室
Ｐ ルーフパネル
Ｓ 空間
ｒｂ ルーフボウ
DESCRIPTION OF SYMBOLS 1 Roof trim 1a Recessed corner part 1b Notch edge part 1c Sun visor arrangement | positioning shaping | molding part 1d Map lamp attachment hole 1e Room lamp attachment hole 11 Base material 2 Closed cell body 2b Closed bubble room P Roof panel S Space rb Roof bow

Claims (1)

車両の車室天井に形成されたルーフパネルの内側に、空間を隔てて、天井面を形成する車両用ルーフトリムにおいて、
前記ルーフパネルの車室側に、該ルーフパネルに付設した固定手段を介して、前記空間を隔てて設けた基材と、
該基材を挟むように、表面側、裏面側に配置されたガラス繊維層と、
前記ルーフパネルと反対側の前記ガラス繊維層に積層された表皮層と、
前記ルーフパネル側の前記ガラス繊維層に積層された遮熱層と、
前記基材の前記ルーフパネル側で、前記遮熱層の表面に、各々、空気が封入された多数の独立気泡室同士が壁で仕切られて、連続的に隙間なく積層された該独立気泡室を有する、独立気泡体と、を備え、
前記独立気泡体を構成する前記独立気泡室により、
前記ルーフパネルとの間に存在する前記空間の空気と、ルーフパネルとの間の熱交換を防止して、
車室内と、前記ルーフパネルによる外気との熱交換を抑制する、
ことを特徴とする車両用ルーフトリム。 In the vehicle roof trim that forms a ceiling surface with a space inside the roof panel formed on the ceiling of the vehicle compartment ,
A base material provided on the vehicle compartment side of the roof panel via a fixing means attached to the roof panel so as to separate the space ;
So as to sandwich the base material, the surface side, and a glass fiber layer disposed on the back side,
And a skin layer laminated on the glass fiber layer on the opposite side to the roof panel,
A heat shield layer laminated on the glass fiber layer on the roof panel side ;
On the roof panel side of the base material, a plurality of closed cell chambers each filled with air are partitioned by walls on the surface of the heat shield layer, and the closed cell chambers are continuously stacked without gaps. Having a closed cell body,
By the closed cell chamber constituting the closed cell body,
To prevent the air in the space existing between the roof panel, the heat exchange between the roof panel,
Suppresses heat exchange between the passenger compartment and the outside air by the roof panel,
A vehicle roof trim.
JP2012121273A 2012-05-28 2012-05-28 Vehicle roof trim Expired - Fee Related JP5872383B2 (en)

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