JP2015039929A - Interior material for vehicle - Google Patents

Interior material for vehicle Download PDF

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Publication number
JP2015039929A
JP2015039929A JP2013171235A JP2013171235A JP2015039929A JP 2015039929 A JP2015039929 A JP 2015039929A JP 2013171235 A JP2013171235 A JP 2013171235A JP 2013171235 A JP2013171235 A JP 2013171235A JP 2015039929 A JP2015039929 A JP 2015039929A
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Japan
Prior art keywords
sound absorbing
absorbing material
sound
slit
vehicle
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Pending
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JP2013171235A
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Japanese (ja)
Inventor
明夫 篠宮
Akio Shinomiya
明夫 篠宮
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Kasai Kogyo Co Ltd
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Kasai Kogyo Co Ltd
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Priority to JP2013171235A priority Critical patent/JP2015039929A/en
Priority to PCT/JP2013/007405 priority patent/WO2014097617A1/en
Publication of JP2015039929A publication Critical patent/JP2015039929A/en
Pending legal-status Critical Current

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Abstract

PROBLEM TO BE SOLVED: To provide an interior material for a vehicle, which can enhance sound absorption performance without being associated with thickening of a sound absorbing material and the like.SOLUTION: A slit 3 is set in a lengthwise direction in the center of a sound absorbing material 2 that is formed almost like a belt, and twisted parts 4 are formed on both the sides of the slit so that a surface can assume an uneven shape continuing in the lengthwise direction. Thus, a sound absorption surface area is increased, and a back air space S serving as a sound insulation layer is formed between an interior material and a trim material 2. Consequently, sound absorption performance of the sound absorbing material 2 is improved, and a sound insulation effect brought about by the back air space S is obtained.

Description

本発明は、自動車のドアトリムやバックドアトリム等に代表される車両用内装材に関する。   The present invention relates to a vehicle interior material represented by a door trim, a back door trim, and the like of an automobile.

自動車の車室側のパネル面を被覆して配設される車両用内装材の中には、例えば、特許文献１、特許文献２に示されているように、型成形された合成樹脂製のトリム材の裏面に吸音材を配設して、車外の騒音をその吸音材で吸収して車室内への透過音を小さく抑制するようにしたものが知られている。   In the interior material for a vehicle disposed to cover the panel surface on the vehicle compartment side of an automobile, for example, as shown in Patent Document 1 and Patent Document 2, it is made of a molded synthetic resin. It is known that a sound absorbing material is disposed on the back surface of the trim material so that noise outside the vehicle is absorbed by the sound absorbing material so that transmitted sound into the vehicle cabin is suppressed to a small level.

特開２００４−６６８８６号公報JP 2004-66886 A 特開２００５−６７５２８号公報Japanese Patent Laying-Open No. 2005-67528

車両用内装材の吸音性能を高めるためには、吸音材の厚みや敷設面積を増大するか、吸音性能に優れた材料を選択する必要があってコスト的に不利となってしまうことは否めない。   In order to improve the sound absorption performance of the interior material for vehicles, it is necessary to increase the thickness and laying area of the sound absorption material, or to select a material with excellent sound absorption performance, which is disadvantageous in terms of cost. .

そこで、本発明は吸音材の厚みや敷設面積の増大化、あるいは高価な吸音材の使用を伴うことなく吸音性能を高めることができる車両用内装材を提供するものである。   Therefore, the present invention provides a vehicle interior material that can enhance the sound absorbing performance without increasing the thickness and laying area of the sound absorbing material or using an expensive sound absorbing material.

本発明の車両用内装材は、トリム材の裏面に弾性を有する吸音材を配設してあって、この吸音材は略帯状に形成してその中央に長さ方向にスリットを設定し、該スリットの両側にその形成長さにねじれ部を形成し、該ねじれ部により表面を長さ方向に連続した凹凸形状に形成したことを主要な特徴としている。   The vehicle interior material of the present invention has a sound absorbing material having elasticity on the back surface of the trim material, the sound absorbing material is formed in a substantially band shape, and a slit is set in the length direction at the center thereof, The main feature is that a twisted portion is formed on the both sides of the slit in the formation length, and the surface is formed into an uneven shape continuous in the length direction by the twisted portion.

本発明によれば、スリットの両側に形成したねじれ部により吸音材の表面を長さ方向に連続した凹凸形状とすることによって表面積が増大することに加えて、ねじれ部によってトリム材と吸音材との間に吸音層となる背後空気層が形成される。   According to the present invention, the surface area of the sound absorbing material is increased by making the surface of the sound absorbing material continuous in the length direction by the twisted portions formed on both sides of the slit, and the trim material and the sound absorbing material are A back air layer serving as a sound absorbing layer is formed between the two.

これにより、吸音材の厚みや敷設面積の増大化、あるいは高価な吸音材料の使用を伴うことなく吸音性能を高めることができる。   Thereby, the sound absorption performance can be enhanced without increasing the thickness and laying area of the sound absorbing material or using an expensive sound absorbing material.

本発明の一実施形態のドアトリムを裏面側から見た説明図。Explanatory drawing which looked at the door trim of one Embodiment of this invention from the back surface side. 図１のＡ―Ａに沿う断面説明図。Cross-sectional explanatory drawing along AA of FIG. 吸音材のねじれ部の形成工程を（Ａ），（Ｂ）にて示す説明図。Explanatory drawing which shows the formation process of the twist part of a sound-absorbing material in (A) and (B).

以下、本発明の一実施形態をトリム材として自動車のドアトリムを例に採って図面と共に詳述する。   Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings, taking an automobile door trim as an example of a trim material.

図１に示す本実施形態のドアトリム１は、適宜の合成樹脂材をもって射出成形などにより型成形され、その裏面には吸音材２を配設してある。   A door trim 1 of the present embodiment shown in FIG. 1 is molded by injection molding or the like with an appropriate synthetic resin material, and a sound absorbing material 2 is disposed on the back surface thereof.

吸音材２は、フェルト，グラスウール，樹脂繊維の集合体、あるいはポリウレタンのような連続気泡をもつ発泡体といった弾性を有する多孔質材料が選択的に用いられる。   As the sound-absorbing material 2, a porous material having elasticity such as felt, glass wool, resin fiber aggregate, or foam having open cells such as polyurethane is selectively used.

このような多孔質材料は、一般に、面密度が３００ｇ／ｍ２、厚さが５ｍｍ〜３０ｍｍのものを使用することで、優れた吸音性能が得られることが知られている。 It is known that such a porous material generally has an excellent sound absorbing performance by using a material having an areal density of 300 g / m 2 and a thickness of 5 mm to 30 mm.

また、吸音材２として、上述の多孔質材料を単体として用いる他、多孔質材料の表面に、例えば、面密度１５〜３００ｇ／ｍ２の低通気性不織布や、面密度３０〜１００ｇ／ｍ２のポリエチレンフィルム、といった表面保護材を設けた多層構造のものを用いることができる。 Further, as the sound absorbing material 2, except for using the above-described porous material as a single, on the surface of the porous material, for example, of or low air nonwoven fabric areal density 15~300g / m 2, the surface density of 30 to 100 g / m 2 A multilayer structure having a surface protective material such as polyethylene film can be used.

本実施形態では、上述の吸音材２を所要の上下幅の略帯状に形成して、ドアトリム１の裏面に上，下２段に近接して配置してある（図１では、便宜的に上段の吸音材２のみを示す）。   In the present embodiment, the above-described sound absorbing material 2 is formed in a substantially strip shape having a required vertical width, and is disposed on the back surface of the door trim 1 so as to be close to the upper and lower two steps (in FIG. Only the sound absorbing material 2 is shown).

吸音材２は、何れもその中央に長さ方向、つまり、車両前後方向にスリット３を設定し、該スリット３の両側にその形成長さにねじれ部４を形成して、該ねじれ部４により表面を長さ方向に連続した凹凸形状としている。   Each of the sound absorbing materials 2 has a slit 3 at its center, that is, a longitudinal direction of the vehicle, that is, a longitudinal direction of the vehicle. The surface has a concavo-convex shape continuous in the length direction.

上述のねじれ部４は、図３（Ａ）に示すように略帯状の吸音材２の中央に長さ方向に任意の長さでスリット３を形成し、そして、一方の端部を反転してこのスリット３に中通しすることによって、図３（Ｂ）に示すようにスリット３の両側にねじれ部４を対称的に形成することができる。   As shown in FIG. 3A, the twisted portion 4 is formed with a slit 3 having an arbitrary length in the length direction in the center of the substantially band-shaped sound absorbing material 2, and one end portion is inverted. By passing through the slit 3, the twisted portions 4 can be formed symmetrically on both sides of the slit 3 as shown in FIG.

吸音材２の長さ方向両端部には、小孔または十字スリット等の係止部５を穿設してある一方、ドアトリム１の裏面には吸音材２の長さ方向両端部に対応する部分に係止突起６を突設してあり、吸音材２を自体の弾性により伸張して係止部５を係止突起６に挿通係着して、これら係止突起６，６間に跨って張設してある。係止突起６に抜け止め用の返しを設けることにより、吸音材２の脱落防止を確実なものとすることができる。   At both ends in the length direction of the sound absorbing material 2, locking portions 5 such as small holes or cross slits are formed, and on the back surface of the door trim 1, portions corresponding to both ends in the length direction of the sound absorbing material 2. A locking projection 6 is provided in the projection, and the sound absorbing material 2 is stretched by its own elasticity, and the locking portion 5 is inserted into and engaged with the locking projection 6. It is stretched. By providing the locking protrusion 6 with a retaining bar, it is possible to reliably prevent the sound absorbing material 2 from falling off.

以上の構成からなる本実施形態によれば、略帯状に形成した吸音材２の中央に長さ方向にスリット３を設定し、その両側にねじれ部４を形成して表面を長さ方向に連続した凹凸形状とすることにより、表裏両面を音の吸収面に利用できて音を吸収する表面積が増大する。また、これに加えて、表面の凹凸形状によりドアトリム１の裏面との間に吸音層となる背後空気層Ｓが形成される。   According to the present embodiment having the above-described configuration, the slit 3 is set in the length direction at the center of the sound absorbing material 2 formed in a substantially band shape, and the torsional portions 4 are formed on both sides thereof so that the surface is continuous in the length direction. By using the uneven shape, the front and back surfaces can be used as sound absorbing surfaces, and the surface area for absorbing sound is increased. In addition to this, a back air layer S serving as a sound absorbing layer is formed between the rear surface of the door trim 1 due to the uneven shape of the surface.

これにより、吸音材２の厚みを増したり、敷設面積を増大したり、あるいは高価な吸音素材を使用しなくても吸音性能を高めることができる。   As a result, the sound absorbing performance can be improved without increasing the thickness of the sound absorbing material 2, increasing the laying area, or using an expensive sound absorbing material.

なお、トリム材は、サイドドアトリム、リアサイドトリム、バックドアトリム、ルーフトリム等であってもよい。また、ねじれ部４はねじれが複数連続したものとすることも可能である。   The trim material may be a side door trim, a rear side trim, a back door trim, a roof trim, or the like. Further, the twisted portion 4 can be a plurality of twisted portions.

１…ドアトリム（トリム材）
２…吸音材
３…スリット
４…ねじれ部
５…係止部
６…係止突起 1 ... Door trim (trim material)
2 ... Sound absorbing material 3 ... Slit 4 ... Twist part 5 ... Locking part 6 ... Locking protrusion

Claims (2)

トリム材の裏面に弾性を有する吸音材を配設した構造であって、
前記吸音材は略帯状に形成してその中央に長さ方向にスリットを設定し、該スリットの両側にその形成長さにねじれ部を形成して、該ねじれ部により表面を長さ方向に連続した凹凸形状に形成したことを特徴とする車両用内装材。 It is a structure in which a sound absorbing material having elasticity is arranged on the back surface of the trim material,
The sound absorbing material is formed in a substantially band shape, and a slit is set in the length direction at the center, and a twisted portion is formed in the formed length on both sides of the slit, and the surface is continuous in the length direction by the twisted portion. An interior material for a vehicle characterized by being formed into an uneven shape. 前記吸音材の長さ方向両端部に係止部を穿設し、該吸音材を伸張して前記係止部を前記トリム材に所要の間隔をおいて突設した係止突起に挿通係着して、これら係止突起間に跨って張設したことを特徴とする請求項１に記載の車両用内装材。
A locking portion is formed at both ends in the length direction of the sound absorbing material, the sound absorbing material is extended, and the locking portion is inserted and engaged with a locking projection protruding from the trim material at a predetermined interval. The vehicle interior material according to claim 1, wherein the vehicle interior material is stretched between the locking projections.
JP2013171235A 2012-12-19 2013-08-21 Interior material for vehicle Pending JP2015039929A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2013171235A JP2015039929A (en) 2013-08-21 2013-08-21 Interior material for vehicle
PCT/JP2013/007405 WO2014097617A1 (en) 2012-12-19 2013-12-17 Material for inside of vehicle

Applications Claiming Priority (1)

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JP2013171235A JP2015039929A (en) 2013-08-21 2013-08-21 Interior material for vehicle

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JP2015039929A true JP2015039929A (en) 2015-03-02

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015209146A (en) * 2014-04-28 2015-11-24 河西工業株式会社 Vehicle interior trim material
JP2021109547A (en) * 2020-01-10 2021-08-02 トヨタ紡織株式会社 Vehicle interior material manufacturing method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015209146A (en) * 2014-04-28 2015-11-24 河西工業株式会社 Vehicle interior trim material
JP2021109547A (en) * 2020-01-10 2021-08-02 トヨタ紡織株式会社 Vehicle interior material manufacturing method
JP7287288B2 (en) 2020-01-10 2023-06-06 トヨタ紡織株式会社 Method for manufacturing vehicle interior material

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