JP2005161914A - Sound insulating structure for vehicle - Google Patents

Sound insulating structure for vehicle Download PDF

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JP2005161914A
JP2005161914A JP2003401044A JP2003401044A JP2005161914A JP 2005161914 A JP2005161914 A JP 2005161914A JP 2003401044 A JP2003401044 A JP 2003401044A JP 2003401044 A JP2003401044 A JP 2003401044A JP 2005161914 A JP2005161914 A JP 2005161914A
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panel
dash
insulator
sound insulation
vehicle
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JP4329513B2 (en
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Shinichi Serino
慎一 芹野
Hiroshi Kitano
洋 喜多野
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Nissan Motor Co Ltd
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Nissan Motor Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a sound insulator structure for vehicle, capable of ensuring high assembling workability, and minimum depression of an instrument panel and number of parts used as well as minimum man-hour for work for cost reduction by suppressing a reaction force from a dash insulator. <P>SOLUTION: This sound insulating structure is so constructed that a dash insulator 10 is fitted on the passenger compartment interior side of a dash panel 7 which partitions an engine compartment E from a passenger compartment R, an upper end portion of the dash insulator 10 is upwardly protruded from between the front end of an instrument panel 6 arranged at the rear upper portion of a dash panel 7 and the dash panel 7, and that a windshield panel 2 is mounted so as to be made to abut against the upper end portion. In this sound insulating structure, the insulator 10 is composed of at least two layers, and at least one layer on a protruding portion 10a which protrudes upwardly from the dash panel 7 is removed, and the windshield panel 2 is pressed against the protruding portion 10a. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、自動車等の車両において、ダッシュインシュレータを用いたウィンドシールドパネル近傍の車両遮音構造に関するものである。   The present invention relates to a vehicle sound insulation structure near a windshield panel using a dash insulator in a vehicle such as an automobile.

従来、ダッシュインシュレータを用いたウィンドシールドパネル近傍の車両遮音構造の第１例としては、例えば自動車のダッシュパネルと当接するダッシュインシュレータの上部及び当接しなくなる上部を所定形状に圧縮成型し、このダッシュインシュレータをインストルメントパネル後端で押圧装着するとともに、ウィンドシールドパネル装着時にこのインストルメントパネルとウィンドシールドパネルとの間で挟着してエンジンルームからの音が乗員室に入らないように遮音している。（例えば、特許文献１参照。）
また、第２例としては、ダッシュインシュレータの上端部はダッシュパネルまでで、一端がこの上端部を押さえ、他端部がウィンドシールドパネルと当接し、中間部がインストパネルの後端に装着されたシール部品が押し込み組み込まれた車両遮音構造が示されている。（例えば、特許文献２参照。）
さらに、第３例としては、ダッシュインシュレータは、その上端をダッシュパネルの上に乗せた状態で、インストルメントパネルの先端位置に設けられたシール部材がウィンドシールドパネルを装着するために押し付けられるときに、ウィンドシールドパネル及びインストルメントパネルとの間でシール部材を介して挟着されて遮音する構造として示されている。（例えば、特許文献３参照。）
特開２００３−７２５９３号公報（第１、５図） 特開平１１−１１５５５１号公報（第１図） 特開平９−１５６４３１号公報（第１図） Conventionally, as a first example of a vehicle sound insulation structure in the vicinity of a windshield panel using a dash insulator, for example, an upper portion of a dash insulator that comes in contact with a dash panel of an automobile and an upper portion that does not come in contact are compressed and molded into a predetermined shape. Is installed at the rear end of the instrument panel, and when the windshield panel is installed, it is sandwiched between the instrument panel and the windshield panel so that sound from the engine room does not enter the passenger compartment. . (For example, refer to Patent Document 1.)
As a second example, the upper end portion of the dash insulator extends to the dash panel, one end holds the upper end portion, the other end abuts the windshield panel, and the middle portion is attached to the rear end of the instrument panel. A vehicle sound insulation structure is shown in which seal parts are pushed in and incorporated. (For example, see Patent Document 2.)
Further, as a third example, when the dash insulator is pressed to attach the windshield panel with the seal member provided at the tip position of the instrument panel with the upper end of the dash insulator placed on the dash panel. In addition, it is shown as a structure that is sandwiched between a windshield panel and an instrument panel via a seal member to provide sound insulation. (For example, refer to Patent Document 3.)
Japanese Patent Laying-Open No. 2003-72593 (FIGS. 1 and 5) Japanese Patent Laid-Open No. 11-115551 (FIG. 1) Japanese Patent Laid-Open No. 9-156431 (FIG. 1)

しかしながら、第１例は、ダッシュインシュレータをインストルメントパネルとウィンドシールドパネルとの間で挟着して遮音する構成のため、ウィンドシールドパネルを装着する工程において、ウィンドシールドパネルを押圧して接着するとき、ダッシュインシュレータ自身圧縮されて硬くなっており、そこからの反力が大きくウィンドシールドパネルが浮き上がり気味となり組み付け性が低下するという問題や成型形状にうまく合わないことがあり遮音が十分でないという問題がある。   However, in the first example, since the dash insulator is sandwiched between the instrument panel and the windshield panel to make sound insulation, when the windshield panel is pressed and bonded in the process of attaching the windshield panel, , The dash insulator itself is compressed and hardened, and there is a problem that the reaction force from it is large and the windshield panel floats up and the assembling property is lowered, and it may not fit well with the molded shape and the sound insulation is not enough is there.

また、第２例及び第３例は、シール部材等の部品点数が増加し、コスト増に結びつくという問題があった。   Further, the second example and the third example have a problem that the number of parts such as a seal member increases, resulting in an increase in cost.

この発明は、上記問題に鑑みてなされたものであり、ダッシュインシュレータからの反力を押さえ、組み付け作業性が良く、部品点数が少なく、廉価な車両遮音構造を提供することを課題とする。   The present invention has been made in view of the above problems, and an object of the present invention is to provide an inexpensive vehicle sound insulation structure that suppresses the reaction force from the dash insulator, has good assembly workability, has a small number of parts, and is inexpensive.

上記課題を解決するために、請求項１に係る発明は、エンジンルームと乗員室とを区画するダッシュパネルの乗員室内側に、ダッシュインシュレータを装着し、該ダッシュインシュレータの上端部を、前記ダッシュパネルの後方上部に配設されるインストルメントパネルの前端部と前記ダッシュパネルとの間から上方に突出させ、ウィンドシールドパネルを前記上端部に当接させるように装着した車両遮音構造において、前記ダッシュインシュレータを少なくとも２層とし、前記ダッシュパネルより上方に突出する突出部分における少なくとも１層を除去し、該突出部分に前記ウィンドシールドパネルを押し当てる構成としたことを特徴とする車両遮音構造としている。   In order to solve the above-mentioned problem, the invention according to claim 1 is configured such that a dash insulator is attached to a passenger compartment side of a dash panel that partitions an engine room and a passenger compartment, and an upper end portion of the dash insulator is attached to the dash panel. In the vehicle sound insulation structure, wherein the dash insulator is mounted so as to protrude upward from between the front end portion of the instrument panel disposed at the rear upper portion of the instrument panel and the dash panel and to make the windshield panel contact the upper end portion. The vehicle sound-insulating structure is characterized in that at least one layer is removed from the protruding portion protruding upward from the dash panel and the windshield panel is pressed against the protruding portion.

請求項２に係る発明は、前記ダッシュインシュレータを厚肉の基材部と薄肉の表皮部とを有する複層とし、前記突出部分における基材部を除去したことを特徴とする請求項１記載の車両遮音構造としている。   The invention according to claim 2 is characterized in that the dash insulator is a multilayer having a thick base portion and a thin skin portion, and the base portion in the protruding portion is removed. It has a vehicle sound insulation structure.

請求項３の発明は、前記上端部の前記表皮部は、車両上下方向に伸縮するように折り返しされた蛇腹状部を有していることを特徴とする請求項２に記載の車両遮音構造としている。   According to a third aspect of the present invention, as the vehicle sound insulation structure according to the second aspect, the skin portion of the upper end portion has a bellows-like portion that is folded back and forth in the vehicle vertical direction. Yes.

請求項４の発明は、前記蛇腹状部の峰に溝状ビードが適宜間隔で形成されていることを特徴とする請求項３に記載の車両遮音構造としている。   According to a fourth aspect of the present invention, there is provided the vehicle sound insulation structure according to the third aspect, wherein groove-shaped beads are formed at appropriate intervals at the peak of the bellows-shaped portion.

請求項１に係る発明によれば、少なくとも２層としたダッシュインシュレータのダッシュパネルより上方に突出する突出部分を少なくとも１層除去して薄くし、該突出部分にウィンドシールドパネルを押し当てる構成としたので、ダッシュインシュレータからの大きな反力はなく適度にウィンドシールドパネルと当接するのでダッシュパネルからウィンドシールドパネルとインストルメントパネルとの間から通ってくる音を遮音でき、しかもウィンドシールドパネルの組み付け作業性が向上し、部品点数が少なく、工数が少なく、廉価にすることができる。   According to the first aspect of the invention, at least one layer of the protruding portion protruding upward from the dash panel of the dash insulator having at least two layers is removed to make it thin, and the windshield panel is pressed against the protruding portion. Therefore, there is no large reaction force from the dash insulator, and it abuts the windshield panel moderately, so that the sound passing from between the windshield panel and the instrument panel can be sound-insulated from the dash panel, and the assembly workability of the windshield panel The number of parts is small, the number of man-hours is small, and the cost can be reduced.

また、請求項２に係る発明によれば、厚肉の基材部を除去し、突出させたので、請求項１の効用に加え、一般に緻密で密度のある表皮部の性質上効率的遮音がはかれる。   Further, according to the invention according to claim 2, since the thick base material portion is removed and protruded, in addition to the effect of claim 1, in general, efficient sound insulation is achieved due to the nature of the dense and dense skin portion. Peeled off.

また、請求項３に係る発明によれば、上端部の表皮部すなわち突出部を蛇腹状にしたので、請求項２の効用に加え、空間精度のばらつきも吸収でき、しかも反力も適当となり、取付作業性や遮音性を一層向上させる。   Further, according to the invention according to claim 3, since the skin portion, that is, the protruding portion at the upper end portion is formed in a bellows shape, in addition to the effect of claim 2, it is possible to absorb variations in spatial accuracy, and the reaction force is also appropriate. Further improve workability and sound insulation.

また、請求項４に係る発明によれば、請求項３の効用に加え、ウィンドシールドパネルの曲面に一層追従性が良く作業性がよく、遮音性に優れる。   According to the invention of claim 4, in addition to the effect of claim 3, the followability to the curved surface of the windshield panel is better, the workability is better, and the sound insulation is better.

以下、この発明を実施例を示す車両遮音構造について、図面に基づいて説明する。   Hereinafter, a vehicle sound insulation structure according to an embodiment of the present invention will be described with reference to the drawings.

車両、特に乗用車は、エンジン音等の駆動音、走行に伴う騒音を発生させており、一方、ドライバーなどの乗員が乗車する密室空間を備えており、乗員がこれら種々の音に煩わされることなく話をし、音楽を聴き、快適なドライブを望んでいるため、遮音には十分な注意が払われている。   Vehicles, particularly passenger cars, generate driving noise such as engine noise and noise that accompanies traveling, and on the other hand, they are equipped with a closed space in which passengers such as drivers get on without being bothered by these various sounds. Because they want to talk, listen to music, and drive comfortably, sufficient attention is paid to sound insulation.

図４は車両１の前席前方ウィンドシールドパネル近傍部分を示しており、エンジンルームＥと乗員室Ｒとを仕切る部分には、ウィンドシールドパネル２がカウル３，ルーフ４，フロントピラー５に囲まれた位置に装着されている。このウィンドシールドパネル２の後方には、インストルメントパネル６が装着されている。 FIG. 4 shows the vicinity of the windshield panel in front of the front seat of the vehicle 1. The windshield panel 2 is surrounded by the cowl 3, the roof 4, and the front pillar 5 at the part that partitions the engine room E and the passenger compartment R. It is mounted in the position. An instrument panel 6 is mounted behind the windshield panel 2.

図４におけるＸ−Ｘ断面が図１に示されている。エンジンルームＥと乗員室Ｒとを区画する位置にはダッシュパネル７が設けられている。このダッシュパネル７は、ウィンドシールドパネル２を受けて支持するカウルダッシュ７ａとこのカウルダッシュ７ａから図示しないフロアパネルまでを塞ぐダッシュロアパネル７ｂから構成されている。このダッシュパネル７の乗員室内側に、ダッシュインシュレータ１０が装着されている。そして、この車両遮音構造は、ダッシュインシュレータ１０の上端部を、ダッシュパネル７の後方上部に配設されるインストルメントパネル６の前端部とダッシュパネル７との間から上方に突出させ、ウィンドシールドパネル２を上端部である突出部分１０ａに当接させるように装着している。   An XX cross section in FIG. 4 is shown in FIG. A dash panel 7 is provided at a position that partitions the engine room E and the passenger compartment R. The dash panel 7 includes a cowl dash 7a that receives and supports the windshield panel 2 and a dash lower panel 7b that covers the cowl dash 7a to a floor panel (not shown). A dash insulator 10 is mounted on the dash panel 7 on the passenger compartment side. In this vehicle sound insulation structure, the upper end portion of the dash insulator 10 protrudes upward from between the front end portion of the instrument panel 6 disposed at the upper rear portion of the dash panel 7 and the dash panel 7, thereby providing a windshield panel. 2 is attached so as to abut the protruding portion 10a which is the upper end portion.

この車両遮音構造において、ダッシュインシュレータ１０を少なくとも２層とし、ダッシュパネル７より上方に突出する突出部分１０ａを少なくとも１層除去して薄くし、突出部分１０ａにウィンドシールドパネル２を押し当てエンジンルームＥからダッシュパネル７の上方から伝達される音を遮断すると共に、接着剤８でダッシュパネル７に接着し、外部からの雨や風をシールしている。   In this vehicle sound insulation structure, the dash insulator 10 has at least two layers, and at least one protruding portion 10a protruding upward from the dash panel 7 is removed and thinned, and the windshield panel 2 is pressed against the protruding portion 10a to engine room E. The sound transmitted from the upper part of the dash panel 7 is cut off and adhered to the dash panel 7 with an adhesive 8 to seal rain and wind from the outside.

ここで、ダッシュインシュレータ１０をマット状の何層かから成る厚肉の基材部１０ｂと少なくとも１層から成る緻密で密度の高い薄肉の表皮部１０ｃとを有する複層とし、突出部分１０ａを表皮部１０ｃのみとしている。したがって、厚肉の基材部が上方の突出部分１０ａから除去されたため、インストメントパネル６の前端部とウィンドシールドパネル２との間に挿入するダッシュパネル１０が薄くなって、ウィンドシールドパネル２とインストメントパネル６との間での反力は小さくなり、ウィンドシールドパネル２が浮き上がらず、組み付け作業性が良くなり、部品点数が少なく、廉価で、突出部分１０ａとウィンドシールドパネル２との当接面が広くなり遮音効果も大きい。   Here, the dash insulator 10 is a multi-layer having a thick base portion 10b composed of several mat-like layers and a dense, high-density thin skin portion 10c composed of at least one layer, and the protruding portion 10a is a skin. Only the portion 10c is used. Therefore, since the thick base material portion is removed from the upper protruding portion 10a, the dash panel 10 inserted between the front end portion of the instrument panel 6 and the windshield panel 2 is thinned. The reaction force with the instrument panel 6 is reduced, the windshield panel 2 is not lifted, the assembly workability is improved, the number of parts is small, the price is low, and the projecting portion 10a and the windshield panel 2 are in contact with each other. The surface becomes wider and the sound insulation effect is great.

図２には、図１のダッシュインシュレータ１０の上端部が表皮部１０ｃだけにされ、突出部分１０ａとされ、そこに、車両１の上下方向に伸縮するように折り返しされた蛇腹状部１０ｄが形成されている車両遮音構造が示されている。このため、ウィンドシールドパネル２を装着するため押しつけると、大きな反力もなく作業性もよく浮き上がりもなく、しかもぴったりとウィンドシールドパネル２の面に当接し、遮音を完全にしている。   In FIG. 2, the upper end portion of the dash insulator 10 of FIG. 1 is only the skin portion 10c to form a protruding portion 10a, and a bellows-like portion 10d that is folded back and forth so as to expand and contract in the vertical direction of the vehicle 1 is formed. A vehicle sound insulation structure is shown. For this reason, when the windshield panel 2 is pressed to mount it, it does not have a large reaction force, has good workability, does not lift up, and is in perfect contact with the surface of the windshield panel 2 so that sound insulation is complete.

さらに、図３には、蛇腹状部１０ｄの峰ここでは車両１の前方側の峰に峰を横切るように溝状ビード１０ｅが適宜間隔で形成されている。このため、水平断面で湾曲し、特に両側で大きくカーブするような場所でもウィンドシールドパネル２との間の追従性がよく、図２に示すようにどの位置でもぴったりと当接し、遮音を完全にすることが出来る。ここでは、峰の前方側のみに溝状ビード１０ｅを形成したが、後方側だけでもあるいは前方と後方の両方に設けてよりウィンドシールドパネル２との間の追従性を良好にする試みを行って良いことは勿論で、一層の遮音効果と作業性を向上させることが出来る。   Further, in FIG. 3, groove-shaped beads 10 e are formed at appropriate intervals so as to cross the peaks of the bellows-like portion 10 d, here the peaks on the front side of the vehicle 1. For this reason, it has a good followability with the windshield panel 2 even in a place where it is curved in a horizontal section, especially on both sides, and as shown in FIG. I can do it. Here, the groove-shaped bead 10e is formed only on the front side of the peak, but an attempt is made to improve the followability between the windshield panel 2 by providing it only on the rear side or on both the front and rear sides. Of course, it is possible to improve the sound insulation effect and workability.

本発明に係るウィンドシールドパネル近傍の車両遮音構造を示す要部断面図である。It is principal part sectional drawing which shows the vehicle sound-insulation structure of the windshield panel vicinity which concerns on this invention. 図１に示す本発明に係る車両遮音構造の変形例を示す要部断面図である。It is principal part sectional drawing which shows the modification of the vehicle sound-insulation structure which concerns on this invention shown in FIG. 図２のダッシュインシュレータの要部斜視図である。It is a principal part perspective view of the dash insulator of FIG. 本発明の車両遮音構造の位置を示す車両の要部概略図である。It is the principal part schematic of the vehicle which shows the position of the vehicle sound insulation structure of this invention.

符号の説明Explanation of symbols

１ 車両
２ ウィンドシールドパネル
６ インストルメントパネル
７ ダッシュパネル
１０ ダッシュインシュレータ
１０ａ 突出部分
１０ｂ 基材部
１０ｃ 表皮部
１０ｄ 蛇腹部
１０ｅ 溝状ビード
Ｅ エンジンルーム
Ｒ 乗員室 DESCRIPTION OF SYMBOLS 1 Vehicle 2 Windshield panel 6 Instrument panel 7 Dash panel 10 Dash insulator 10a Projection part 10b Base material part 10c Skin part 10d Bellows part 10e Groove-shaped bead E Engine room R Crew room

Claims (4)

エンジンルームと乗員室とを区画するダッシュパネルの乗員室内側に、ダッシュインシュレータを装着し、該ダッシュインシュレータの上端部を、前記ダッシュパネルの後方上部に配設されるインストルメントパネルの前端部と前記ダッシュパネルとの間から上方に突出させ、ウィンドシールドパネルを前記上端部に当接させるように装着した車両遮音構造において、
前記ダッシュインシュレータを少なくとも２層とし、前記ダッシュパネルより上方に突出する突出部分における少なくとも１層を除去し、該突出部分に前記ウィンドシールドパネルを押し当てる構成としたことを特徴とする車両遮音構造。 A dash insulator is attached to the passenger compartment side of the dash panel that divides the engine room and the passenger compartment, and the upper end of the dash insulator is connected to the front end of the instrument panel disposed at the rear upper part of the dash panel and the dash panel. In the vehicle sound insulation structure, which protrudes upward from between the dash panel and is mounted so that the windshield panel is in contact with the upper end,
A vehicle sound insulation structure characterized in that the dash insulator has at least two layers, at least one layer in a protruding portion protruding upward from the dash panel is removed, and the windshield panel is pressed against the protruding portion. 前記ダッシュインシュレータを厚肉の基材部と薄肉の表皮部とを有する複層とし、前記突出部分における基材部を除去したことを特徴とする請求項１記載の車両遮音構造。   The vehicle sound insulation structure according to claim 1, wherein the dash insulator is a multilayer having a thick base material portion and a thin skin portion, and the base material portion in the protruding portion is removed. 前記上端部の前記表皮部は、車両上下方向に伸縮するように折り返しされた蛇腹状部を有していることを特徴とする請求項２に記載の車両遮音構造。   The vehicle sound insulation structure according to claim 2, wherein the skin portion of the upper end portion has a bellows-like portion that is folded back and forth in the vehicle vertical direction. 前記蛇腹状部の峰に溝状ビードが適宜間隔で形成されていることを特徴とする請求項３に記載の車両遮音構造。   4. The vehicle sound insulation structure according to claim 3, wherein groove-shaped beads are formed at appropriate intervals at the peak of the bellows-shaped portion.
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Cited By (5)

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FR2957868A1 (en) * 2010-03-25 2011-09-30 Peugeot Citroen Automobiles Sa Method for improving acoustic sealing between fascia and apron sheet and/or windscreen and fascia of motor vehicle, involves maintaining height of applied foam at compressed state, so that foam exert effective compression
JP2011218954A (en) * 2010-04-08 2011-11-04 Inoac Corp Cover member
JP2014128999A (en) * 2012-12-28 2014-07-10 Toyota Motor Corp Soundproof structure around dash panel
JP2016090532A (en) * 2014-11-11 2016-05-23 株式会社日立製作所 Cover member, manufacturing method of cover member, and cover structure using cover member
JP2019059467A (en) * 2017-09-26 2019-04-18 フォルクスヴァーゲン アクチエンゲゼルシャフトＶｏｌｋｓｗａｇｅｎ Ａｋｔｉｅｎｇｅｓｅｌｌｓｃｈａｆｔ Acoustic damping part, method for producing a sound-insulated vehicle body and motor vehicle

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2957868A1 (en) * 2010-03-25 2011-09-30 Peugeot Citroen Automobiles Sa Method for improving acoustic sealing between fascia and apron sheet and/or windscreen and fascia of motor vehicle, involves maintaining height of applied foam at compressed state, so that foam exert effective compression
JP2011218954A (en) * 2010-04-08 2011-11-04 Inoac Corp Cover member
JP2014128999A (en) * 2012-12-28 2014-07-10 Toyota Motor Corp Soundproof structure around dash panel
JP2016090532A (en) * 2014-11-11 2016-05-23 株式会社日立製作所 Cover member, manufacturing method of cover member, and cover structure using cover member
JP2019059467A (en) * 2017-09-26 2019-04-18 フォルクスヴァーゲン アクチエンゲゼルシャフトＶｏｌｋｓｗａｇｅｎ Ａｋｔｉｅｎｇｅｓｅｌｌｓｃｈａｆｔ Acoustic damping part, method for producing a sound-insulated vehicle body and motor vehicle
US11135983B2 (en) 2017-09-26 2021-10-05 Volkswagen Aktiengesellschaft Acoustic damping part, method for producing a sound-insulated vehicle body and motor vehicle

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