JP3833494B2 - Instrument panel for automobile - Google Patents

Instrument panel for automobile Download PDF

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Publication number
JP3833494B2
JP3833494B2 JP2001128474A JP2001128474A JP3833494B2 JP 3833494 B2 JP3833494 B2 JP 3833494B2 JP 2001128474 A JP2001128474 A JP 2001128474A JP 2001128474 A JP2001128474 A JP 2001128474A JP 3833494 B2 JP3833494 B2 JP 3833494B2
Authority
JP
Japan
Prior art keywords
instrument panel
air duct
flange
vertical wall
storage rack
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP2001128474A
Other languages
Japanese (ja)
Other versions
JP2002356108A (en
Inventor
昌彦 持田
隆弘 與猶
芳美 沼口
立也 小島
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nissan Motor Co Ltd
Showa Denko Materials Co Ltd
Original Assignee
Hitachi Chemical Co Ltd
Nissan Motor Co Ltd
Showa Denko Materials Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Chemical Co Ltd, Nissan Motor Co Ltd, Showa Denko Materials Co Ltd filed Critical Hitachi Chemical Co Ltd
Priority to JP2001128474A priority Critical patent/JP3833494B2/en
Publication of JP2002356108A publication Critical patent/JP2002356108A/en
Application granted granted Critical
Publication of JP3833494B2 publication Critical patent/JP3833494B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Instrument Panels (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Vehicle Step Arrangements And Article Storage (AREA)

Description

【0001】
【発明の属する技術分野】
本発明は、自動車の車室内前部に装備され、メータ、各種スイッチ類、ラジオ、ステレオ等が取付けられるインストルメントパネルに関する。
【0002】
【従来の技術】
従来のインストルメントパネル4は、図3(a)に示すように、射出成形によって形成され、図3(b)に示すように、その裏面側に別途成形されたエアダクト5が車幅方向に配設され、エアダクト5の適宜箇所に固着されたブラケット9を介してビス10により止着されるのが一般的であった。
【0003】
【発明が解決しようとする課題】
エアダクト5は筒状に形成され、エアダクト5の適宜箇所に固着されたブラケット9を介して、インストルメントパネル4の裏面側に形成されたボス部11にビス10により止着されている。すなわち、エアダクト5はインストルメントパネル4の裏面側に釣支されており、物品を載置するために形成された物置棚1の支持剛性向上に寄与することができないという課題があった。
【0004】
本発明は、物品を載置する物置棚の支持剛性を既存の部品を使用して安価に向上させることを目的とする。
【0005】
【課題を解決するための手段】
本発明は、以下のことを特徴とする。
(1)インストルメントパネルの助手席側上面に、物品を載置可能な物置棚が形成され、物置棚の後縁より下方に延在する縦壁が形成されており、インストルメントパネルの縦壁裏面とで閉断面形状を形成するコ字状断面を有し、それぞれの端縁から上下に延在しているフランジを有するエアダクトが、物置棚の全幅に亘って縦壁裏面に前記フランジで溶着され、上側のフランジは縦壁裏面の上端部に位置する物置棚の後縁に溶着されていることを特徴とする自動車用インストルメントパネル。
(2)前記エアダクトのフランジには、インストルメントパネルの裏面と溶着するリブが突設され、前記物置棚の全幅寸法と、前記全幅寸法の範囲内にあるリブの溶着面積との比率が1.5〜3.9であることを特徴とする(1)に記載の自動車用インストルメントパネル。
【0006】
【発明の実施の形態】
本発明のインストルメントパネル4は、図1(b)に示すように、助手席側の上面をえぐって物品を載置可能に形成した物置棚1の後縁21より下方に延在する縦壁22の裏面に、エアダクト2を物置棚1の全幅に亘って溶着で取り付けた構造である。エアダクト2は断面コ字状に形成し、それぞれの端縁から上下にフランジ3、3が延在している。そして、フランジ3、3を縦壁22の裏面に溶着することにより、空調風を送風可能な閉断面形状を得る様にしている。又、物置棚1に図外の物品を載置すると、後縁21近傍で曲げモーメントが最大となるが、後縁21の下方は、物置棚1の全幅に亘って、縦壁22の裏面とで閉断面を形成したエアダクト2が配設されているため、物置棚1の支持剛性を向上させることができる。
又、前面衝突時、助手席乗員の体の一部は、最初に後縁21や縦壁22に当たるが、当該部位はエアダクト2により剛性が向上しているため、変形量を小さく抑えることができ、安全性を向上させることができる。加えてエアダクト2は既存の部品であり、剛性を上げるために新たな部品を必要としないので安価に製造できる。
【0007】
フランジ3、3の接合面は、図1(c)及び図2に示すように、フランジ3、3の表面に一定の幅のリブ6を突設し、融着時にそのリブ6の部分が融解して接着剤の役割を果たす。
この接着剤の量を制御することにより、物置棚の剛性を高くすることができるという知見を得ている。
この接着剤の量は、物置棚の大きさに対するリブの面積で表すことができ、物置棚の車幅方向における幅が車幅方向と垂直な方向の幅に比べて大きいことから、物置棚の大きさを、物置棚の車幅方向の幅に代表させることができるという知見も得られ、設計上の簡便な方法として、物置棚1の全幅寸法W(mm)と全幅寸法Wの範囲内にあるリブ6の全溶着面積M(mm2)の比率M/Wが1.5以上であれば、ほぼ同じ構造における剛性を最も高めることができるという知見を得た。
また、物置棚1の全幅寸法W(mm)とリブ6の全溶着面積M(mm2)の比率が3.9より大きくなると、融着しなければならないリブの部分が増加するので、組立に時間がかかり、また、熱によってリブの当たった部分が表面に模様として出てくるなど外観の美観を損ねるおそれがある。
より好ましくは、物置棚1の全幅寸法W(mm)と全幅寸法Wの範囲内にあるリブ6の全溶着面積M(mm2)の比率M/Wは、2.5〜3.4の範囲である。
【0008】
上述のように構成された本発明のインストルメントパネル4においては、インストルメントパネル4及びエアダクト2は、それぞれ射出成形によって個別的に所要形状に形成される。そして、成形後における溶着部である対応関係の接合面を相互に重ね合わせた状態で、溶着部に所要の圧力を加えながら、例えば100〜120HZの振動周波数で2〜4mmの振幅を与えることにより溶着して、所望のインストルメントパネル構造を得ることができる。
一例として、物置棚1の全幅寸法Wを320mmとしたものについて、リブ6の全溶着面積Mを616、916、1216mm2としたものは、その剛性が通常の使用において全く問題がなく、476mm2としたものは、その剛性が実用するには弱く、1296mm2としたものは、その剛性が通常の使用においては問題はないが、組立時間が616mm2のものに比べて3倍かかり、リブの形状がインストルメントパネルの表面に浮き出てしまった。
【0009】
【発明の効果】
以上のように、請求項1の発明によれば、物品により物置棚に下向き加重が加わり、後縁に最大曲げモーメントが発生しても、後縁近傍には、インストルメントパネルの裏面とで閉断面を形成するエアダクトが、物置棚の全幅に亘って配設されているため、その支持剛性を高めることができる。
又、前面衝突時、助手席乗員の体の一部が、後縁近傍に当たっても、高い支持剛性により後縁近傍の変形量を小さく抑えることができ、安全性を向上させることができる。
加えて、高い支持剛性を得るために既存のエアダクトを使用しており、新たな部品を追加しないので安価に製造できる。
又、請求項2の発明によれば、高い支持剛性を得るために、物置棚の全幅寸法と、全幅寸法の範囲内にあるリブの溶着面積との比の範囲を1.5〜3.9としたため、所望の剛性が得られ、かつ組み立て時間を短縮できる。
【図面の簡単な説明】
【図1】(a)は、本発明のインストルメントパネルの一実施例を示す斜視図であり、(b)は、そのAA断面図であり、(c)は接合部分を示す部分断面図である。
【図2】図1のインストルメントパネルのエアダクトの部分斜視図である。
【図3】(a)は、従来例を示す斜視図であり、(b)は、そのAA断面図である。
【符号の説明】
1 物置棚
2 エアダクト
3 フランジ
4 インストルメントパネル
5 エアダクト
6 リブ
9 ブラケット
10 ビス
21 後縁
22 縦壁
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an instrument panel that is installed in a front part of a vehicle interior of an automobile and to which a meter, various switches, a radio, a stereo, and the like are attached.
[0002]
[Prior art]
The conventional instrument panel 4 is formed by injection molding as shown in FIG. 3A, and as shown in FIG. 3B, an air duct 5 separately formed on the back side is arranged in the vehicle width direction. In general, it is fixed by a screw 10 via a bracket 9 which is provided and fixed to an appropriate portion of the air duct 5.
[0003]
[Problems to be solved by the invention]
The air duct 5 is formed in a cylindrical shape, and is fixed to the boss portion 11 formed on the back side of the instrument panel 4 with a screw 10 via a bracket 9 fixed to an appropriate portion of the air duct 5. That is, the air duct 5 is supported on the back side of the instrument panel 4, and there is a problem that the air duct 5 cannot contribute to improving the support rigidity of the storage rack 1 formed for placing the article.
[0004]
An object of the present invention is to improve the support rigidity of a storage rack on which articles are placed using existing parts at low cost.
[0005]
[Means for Solving the Problems]
The present invention is characterized by the following.
(1) on the passenger side upper surface of the instrument panel, is formed can be placed shed shelf goods, vertical walls extending downwardly from the trailing edge of the storeroom shelves are formed, the vertical wall of the instrument panel It has a U-shaped cross section which forms a closed cross section at the back, an air duct having a flange extending from the respective edge vertically, with the flange vertical wall back surface over the entire width of the object shelf An automotive instrument panel characterized in that it is welded and the upper flange is welded to the rear edge of a storage shelf located at the upper end of the back of the vertical wall .
(2) to the air duct of the flange is projecting ribs to the back surface and the welding of the instrument panel, the entire width of the shed shelf, the ratio of the weld area of the ribs is within the range of the entire width 1 The instrument panel for automobiles according to (1), which is .5 to 3.9.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
As shown in FIG. 1B, the instrument panel 4 of the present invention is a vertical wall that extends downward from the rear edge 21 of the storage rack 1 that is formed so that articles can be placed around the upper surface on the passenger seat side. 22 is a structure in which the air duct 2 is attached to the rear surface of 22 by welding over the entire width of the storage rack 1. The air duct 2 is formed in a U-shaped cross section, and flanges 3 and 3 extend vertically from the respective end edges. And by welding the flanges 3 and 3 to the back surface of the vertical wall 22, the closed cross-sectional shape which can ventilate an air-conditioning wind is obtained. Further, when an unillustrated article is placed on the storage shelf 1, the bending moment is maximized in the vicinity of the rear edge 21, but the bottom of the rear edge 21 extends across the entire width of the storage shelf 1 and the back surface of the vertical wall 22. Since the air duct 2 having a closed cross section is disposed, the support rigidity of the storage rack 1 can be improved.
Further, at the time of a frontal collision, a part of the passenger's occupant's body first hits the rear edge 21 and the vertical wall 22, but the rigidity is improved by the air duct 2, so that the deformation amount can be kept small. , Can improve safety. In addition, the air duct 2 is an existing part and does not require a new part in order to increase rigidity, and therefore can be manufactured at low cost.
[0007]
As shown in FIGS. 1 (c) and 2, the joint surfaces of the flanges 3 and 3 are provided with ribs 6 having a constant width on the surfaces of the flanges 3 and 3, and the ribs 6 melt at the time of fusion. And act as an adhesive.
It has been found that the rigidity of the storage rack can be increased by controlling the amount of the adhesive.
The amount of the adhesive can be expressed by the area of the rib with respect to the size of the storage rack, and the width of the storage rack in the vehicle width direction is larger than the width in the direction perpendicular to the vehicle width direction. The knowledge that the size can be represented by the width in the vehicle width direction of the storage rack is also obtained, and as a simple design method, within the range of the total width dimension W (mm) and the total width dimension W of the storage rack 1 It was found that if the ratio M / W of the total welded area M (mm 2 ) of a certain rib 6 is 1.5 or more, the rigidity in the substantially same structure can be most enhanced.
Further, if the ratio of the total width dimension W (mm) of the storage rack 1 to the total welding area M (mm 2 ) of the rib 6 is larger than 3.9, the portion of the rib that must be fused increases, It takes time, and there is a risk of deteriorating the appearance of the appearance, such as the ribbed portion coming out as a pattern on the surface due to heat.
More preferably, the ratio M / W of the total welding area M (mm 2 ) of the rib 6 within the range of the total width dimension W (mm) of the storage rack 1 and the total width dimension W is in the range of 2.5 to 3.4. It is.
[0008]
In the instrument panel 4 of the present invention configured as described above, the instrument panel 4 and the air duct 2 are individually formed into a required shape by injection molding. Then, by applying a required pressure to the welded portion in a state where the corresponding joint surfaces that are welded portions after molding are superimposed on each other, for example, by giving an amplitude of 2 to 4 mm at a vibration frequency of 100 to 120 Hz. The desired instrument panel structure can be obtained by welding.
As an example, when the total width W of the storage rack 1 is 320 mm and the total welded area M of the rib 6 is 616, 916, 1216 mm 2 , the rigidity is not a problem in normal use, and is 476 mm 2. that thing that is weak to practically its rigidity, which was 1296Mm 2 is no problem in using the rigidity of the normal, assembly time-consuming 3-fold compared to that of 616Mm 2, the ribs The shape came out on the surface of the instrument panel.
[0009]
【The invention's effect】
As described above, according to the first aspect of the present invention, even if a downward load is applied to the storage rack by the article and the maximum bending moment is generated at the rear edge, the rear edge of the instrument panel is closed with the back of the instrument panel. Since the air duct that forms the cross section is disposed over the entire width of the storage rack, the support rigidity can be increased.
Further, even when a part of the passenger's occupant's body hits the vicinity of the rear edge at the time of a frontal collision, the deformation amount in the vicinity of the rear edge can be suppressed by high support rigidity, and safety can be improved.
In addition, the existing air duct is used to obtain high support rigidity, and no new parts are added, so that it can be manufactured at low cost.
According to the invention of claim 2, in order to obtain high support rigidity, the ratio range of the total width dimension of the storage rack and the welding area of the ribs within the range of the full width dimension is set to 1.5 to 3.9. Therefore, desired rigidity can be obtained and assembly time can be shortened.
[Brief description of the drawings]
1A is a perspective view showing an embodiment of an instrument panel according to the present invention, FIG. 1B is a cross-sectional view thereof taken along AA, and FIG. 1C is a partial cross-sectional view showing a joint portion; is there.
FIG. 2 is a partial perspective view of an air duct of the instrument panel of FIG.
3A is a perspective view showing a conventional example, and FIG. 3B is a cross-sectional view taken along line AA of FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Storage shelf 2 Air duct 3 Flange 4 Instrument panel 5 Air duct 6 Rib 9 Bracket 10 Screw 21 Rear edge 22 Vertical wall

Claims (2)

インストルメントパネルの助手席側上面に、物品を載置可能な物置棚が形成され、物置棚の後縁より下方に延在する縦壁が形成されており、インストルメントパネルの縦壁裏面とで閉断面形状を形成するコ字状断面を有し、それぞれの端縁から上下に延在しているフランジを有するエアダクトが、物置棚の全幅に亘って縦壁裏面に前記フランジで溶着され、上側のフランジは縦壁裏面の上端部に位置する物置棚の後縁に溶着されていることを特徴とする自動車用インストルメントパネル。In the passenger side upper surface of the instrument panel, it is formed can be placed shed shelf goods, vertical walls extending downwardly from the trailing edge of the storeroom shelves are formed, a vertical wall rear surface of the instrument panel has a U-shaped cross section forming a closed section, the air duct having a flange extending from the respective edge vertically, are welded by the flange vertical wall back surface over the entire width of the object shelves, An automotive instrument panel, wherein the upper flange is welded to the rear edge of the storage shelf located at the upper end of the back of the vertical wall . 前記エアダクトフランジには、インストルメントパネルの裏面と溶着するリブが突設され、前記物置棚の全幅寸法と、前記全幅寸法の範囲内にあるリブの溶着面積との比率が1.5〜3.9であることを特徴とする請求項1に記載の自動車用インストルメントパネル。A rib that welds to the back surface of the instrument panel protrudes from the flange of the air duct , and the ratio of the total width dimension of the storage rack to the welding area of the rib within the range of the total width dimension is 1.5-3. The vehicle instrument panel according to claim 1, wherein the vehicle instrument panel is.
JP2001128474A 2001-03-30 2001-04-25 Instrument panel for automobile Expired - Fee Related JP3833494B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2001128474A JP3833494B2 (en) 2001-03-30 2001-04-25 Instrument panel for automobile

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2001-97947 2001-03-30
JP2001097947 2001-03-30
JP2001128474A JP3833494B2 (en) 2001-03-30 2001-04-25 Instrument panel for automobile

Publications (2)

Publication Number Publication Date
JP2002356108A JP2002356108A (en) 2002-12-10
JP3833494B2 true JP3833494B2 (en) 2006-10-11

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Family Applications (1)

Application Number Title Priority Date Filing Date
JP2001128474A Expired - Fee Related JP3833494B2 (en) 2001-03-30 2001-04-25 Instrument panel for automobile

Country Status (1)

Country Link
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