JP4701989B2 - Fixed member structure - Google Patents

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JP4701989B2
JP4701989B2 JP2005304804A JP2005304804A JP4701989B2 JP 4701989 B2 JP4701989 B2 JP 4701989B2 JP 2005304804 A JP2005304804 A JP 2005304804A JP 2005304804 A JP2005304804 A JP 2005304804A JP 4701989 B2 JP4701989 B2 JP 4701989B2
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seat surface
door
inner panel
fixed
surface portion
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JP2007112259A (en
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正博 覚前
礼二 西浦
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Toyota Motor Corp
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Description

本発明は、固定部材構造に関し、さらに詳しくは、車両のドアガラスを案内するドアサッシュを固定するために用いられる固定部材構造に関する。 The present invention relates to a fixing member structure, and more particularly to a fixing member structure used for fixing a door sash that guides a door glass of a vehicle.

車両のドアガラスを案内するドアサッシュは、ブラケット等を介して、ドアインナパネルから延出された座面部（取付座面）に取り付けられることが多い。   A door sash that guides a vehicle door glass is often attached to a seat surface portion (attachment seat surface) that extends from a door inner panel via a bracket or the like.

たとえば、特許文献１には、サッシュブラケット取付座面によってサッシュブラケットをドアパネルに取り付けるようにしたドアサッシュの取付構造が記載されている。   For example, Patent Document 1 describes a door sash mounting structure in which a sash bracket is attached to a door panel by a sash bracket mounting seat surface.

ところで、取付座面には、ドアガラスからの力がドアサッシュ及びサッシュブラケットを介して作用するため、高い耐久性が求められる。耐久性向上のために、ドアインナパネル等の厚みを増大させると、重量増を招く。
特開平６−２９７９４９号公報 By the way, since the force from a door glass acts on a mounting seat surface via a door sash and a sash bracket, high durability is calculated | required. Increasing the thickness of the door inner panel or the like in order to improve the durability causes an increase in weight.
JP-A-6-297949

本発明は上記事実を考慮し、重量増を招くことなく、ドアサッシュからの力に対する耐久性の高い固定部材構造を得ることを課題とする。 In view of the above facts, an object of the present invention is to obtain a fixing member structure having high durability against a force from a door sash without causing an increase in weight.

請求項１に記載の発明では、ドアインナパネルに設けられ、このドアインナパネルを局所的に板厚方向に曲げることで板厚方向に見て略三角形状に突出された座面部と、
前記座面部に設けられると共に、ブラケットを介してドアサッシュが固定される固定部と、
を備え、
前記座面部の前記インナパネルの縁部に近い側の一端部は、この一端部に対して固定部とは反対側の他端部よりも固定部までの距離が長く、かつ、前記略三角形状の辺の１つにより構成されて、ドアインナパネルの板状部分と座面部との境界部分における上下方向に沿った部分の長さである有効幅が前記他端部の有効幅よりも長い長辺部とされており、
前記ブラケットは、前記固定部と前記一端部との間にドアサッシュからの車幅方向内向きの力が作用するように、上下方向で見て前記座面部に対し車幅方向に屈曲した屈曲部でドアサッシュと固定されていることを特徴とする。 In the invention according to claim 1, the seat surface portion provided in the door inner panel and projecting in a substantially triangular shape when viewed in the plate thickness direction by locally bending the door inner panel in the plate thickness direction,
A fixing portion Rutotomoni provided on the seat surface portion, a door sash via the bracket is fixed,
With
One end of the seat surface near the edge of the inner panel has a longer distance to the fixed part than the other end opposite to the fixed part with respect to the one end, and the substantially triangular shape. The effective width which is the length of the part along the up-down direction in the boundary part of the plate-shaped part of a door inner panel and a seat surface part is longer than the effective width of the said other end part. It is considered as a side ,
The bracket is a bent portion bent in the vehicle width direction with respect to the seat surface portion when viewed in the vertical direction so that an inward force in the vehicle width direction from the door sash acts between the fixed portion and the one end portion. It is characterized by being fixed to the door sash .

一般に、固定部にブラケットを介して固定されたドアサッシュから荷重が作用すると、この荷重によってドアインナパネルと座面部との境界部分に曲げモーメントが作用する。本発明では、ブラケットは、固定部と一端部との間にドアサッシュからの車幅方向内向きの力が作用するように、上下方向で見て前記座面部に対し車幅方向に屈曲した屈曲部でドアサッシュと固定されており、一端部に曲げモーメントが作用する。 In general, when a load is applied from a door sash fixed to a fixed portion via a bracket , a bending moment is applied to the boundary portion between the door inner panel and the seat surface portion due to the load. In the present invention, the bracket is bent in the vehicle width direction with respect to the seat surface portion when viewed in the vertical direction so that an inward force in the vehicle width direction from the door sash acts between the fixed portion and the one end portion. The door is fixed to the door sash, and a bending moment acts on one end.

本発明では、座面部のインナパネルの縁部に近い側の一端部は、この一端部に対して固定部とは反対側の他端部よりも固定部までの距離が長くされている。すなわち、一端部は、固定部にブラケットを介して固定されたドアサッシュから入力される板厚方向の荷重によって、他端部よりも大きな曲げモーメントが作用する側に位置している。また、一端部は、略三角形状の辺の１つにより構成されて、ドアインナパネルの板状部分と座面部との境界部分における上下方向に沿った部分（座面部に作用した荷重を受ける部分）の長さである有効幅が、他端部の有効幅よりも長い長辺部とされている。したがって、上記した曲げモーメントがこの一端部に作用しても、長辺部により荷重は分散される。換言すれば、長辺部によって強度が高められているため、ドアサッシュからの力に対する耐久性が高くなっている。しかも、座面部（ドアインナパネル）の厚みを増大させる必要がないので、重量増を招かない。 In the present invention, one end of the seat surface near the edge of the inner panel has a longer distance from the one end to the fixed portion than the other end opposite to the fixed portion. That is, the one end is positioned on the side where a larger bending moment acts than the other end due to the load in the thickness direction inputted from the door sash fixed to the fixing portion via the bracket . Further, the one end portion is constituted by one of substantially triangular sides, and is a portion along the vertical direction at the boundary portion between the plate-like portion of the door inner panel and the seat surface portion (the portion that receives the load acting on the seat surface portion) The effective width that is the length of) is a long side portion longer than the effective width of the other end portion. Therefore, even if the bending moment described above acts on the one end portion, the load is dispersed by the long side portion. In other words, since the strength is increased by the long side portion, the durability against the force from the door sash is increased. In addition, since it is not necessary to increase the thickness of the seat surface portion (door inner panel), the weight is not increased.

なお、この「座面部」とは、ドアインナパネルが板厚方向に突出されていない部分（板状に維持されている部分）に対し、板厚方向に突出されている部分を含み、たとえば、ドアインナパネルから斜めに立ち上がっている部分等も含む。 Note that this "seat portion" with respect to the portion where the door inner panel is not projected in the thickness direction (the portion which is maintained in a plate shape) includes a portion that is projected in the thickness direction, for example, Including the part rising diagonally from the door inner panel .

また、ここでいう「有効幅」とは、ドアインナパネルの板厚方向に突出されていない部分（板状に維持されている部分）と座面部との境界部分であって、座面部に作用した荷重を受ける部分の長さをいう。 In addition, the “ effective width ” here is a boundary portion between a portion of the door inner panel that is not projected in the plate thickness direction (portion maintained in a plate shape) and the seat surface portion, and acts on the seat surface portion. The length of the part that receives the applied load.

本発明は上記構成としたので、重量増を招くことなく、ドアサッシュからの力に対する耐久性を高めることができる。 Since this invention was set as the said structure, durability with respect to the force from a door sash can be improved, without causing a weight increase.

図２および図３には、本発明の第１実施形態に係る固定部材構造１２が示されている。本実施形態の固定部材構造１２は、図１に示すように、自動車のドアインナパネル１４にドアサッシュ１６を固定するために使用されており、図１では、ドアガラス１８が下降した状態となっている。以下、図面において車両前方を矢印ＦＲで、上方を矢印ＵＰで、車幅方向外側を矢印ＯＵＴでそれぞれ示す。   2 and 3 show a fixing member structure 12 according to the first embodiment of the present invention. As shown in FIG. 1, the fixing member structure 12 of this embodiment is used to fix a door sash 16 to a door inner panel 14 of an automobile. In FIG. 1, the door glass 18 is lowered. ing. In the drawings, the front side of the vehicle is indicated by an arrow FR, the upper side is indicated by an arrow UP, and the outer side in the vehicle width direction is indicated by an arrow OUT.

図１に示すように、ドアガラス１８の前方側または後方側の少なくとも一方（図１では両方）には、断面略Ｕ字状のドアサッシュ１６が配置されている。ドアサッシュ１６は上下方向に一定の断面で延在されており、ドアガラス１８の車両前後方向の縁部を収容している。そして、昇降装置２０によるドアガラス１８の昇降をドアサッシュ１６が案内する。   As shown in FIG. 1, a door sash 16 having a substantially U-shaped cross section is disposed on at least one of the front side and the rear side of the door glass 18 (both in FIG. 1). The door sash 16 extends in the vertical direction with a constant cross section and accommodates the edge of the door glass 18 in the vehicle front-rear direction. And the door sash 16 guides the raising / lowering of the door glass 18 by the raising / lowering apparatus 20. FIG.

図２及び図３に示すように、ドアインナパネル１４には、ドアインナパネル１４の板材を板厚方向に局所的に屈曲させることにより、車幅方向に見て略三角形状の座面部２２が形成されている。   As shown in FIGS. 2 and 3, the door inner panel 14 has a substantially triangular seat surface portion 22 as viewed in the vehicle width direction by locally bending the plate material of the door inner panel 14 in the plate thickness direction. Is formed.

座面部２２の中央には、ボルト２６及びナット２８によってブラケット３０が固定されている。ブラケット３０は、上下方向に見て屈曲した屈曲部３０Ｂでドアサッシュ１６と固定されている。ブラケット３０はこのように屈曲部３０Ｂで屈曲されているため、ボルト２６及びナット２８による固定部３２が、ドアサッシュ１６からの作用する力Ｆに対して、距離Ｌだけオフセットされていることになる（図３参照）。したがって、力Ｆに起因する曲げモーメントＭが、固定部３２から見て図面右側、すなわちドアインナパネル１４と座面部２２との一端部３４に相対的に大きく作用する。   A bracket 30 is fixed to the center of the seat surface portion 22 by a bolt 26 and a nut 28. The bracket 30 is fixed to the door sash 16 by a bent portion 30B that is bent when viewed in the vertical direction. Since the bracket 30 is bent at the bent portion 30B in this way, the fixing portion 32 by the bolt 26 and the nut 28 is offset by a distance L with respect to the force F acting from the door sash 16. (See FIG. 3). Therefore, the bending moment M resulting from the force F acts on the right side of the drawing as viewed from the fixed portion 32, that is, on the one end portion 34 of the door inner panel 14 and the seat surface portion 22.

そして、本実施形態では、上記したように座面部２２を略三角形状に形成することで、その一端部３４において、座面部２２の延出方向と直交する方向に見た幅ｂ１（有効幅）が、固定部３２を挟んで一端部３４と反対側の他端部３８の有効幅ｂ２よりも広い長辺部３６が構成されている。   In the present embodiment, the seat surface portion 22 is formed in a substantially triangular shape as described above, so that the width b1 (effective width) of the one end portion 34 viewed in the direction orthogonal to the extending direction of the seat surface portion 22 is obtained. However, a long side portion 36 wider than the effective width b2 of the other end portion 38 opposite to the one end portion 34 with the fixed portion 32 interposed therebetween is formed.

次に、本実施形態の作用を説明する。   Next, the operation of this embodiment will be described.

ドアの開閉によるドアガラス１８の慣性力等に起因して、一端部３４に上記したように曲げモーメントＭが作用する。   As described above, the bending moment M acts on the one end 34 due to the inertial force of the door glass 18 due to opening and closing of the door.

この場合、座面部２２の形状に関係なく（たとえば円形の座面部でもよい）、一般に曲げ応力σは、ドアインナパネル１４の板厚をｔ、一端部３４の有効幅をｂとし、上記の曲げモーメントＭを用いて、
σ＝Ｍ／Ｚ （１）（ただし、Ｚ＝ｂｔ２／６）となる。すなわち、有効幅ｂが小さい場合には、断面係数も小さいため、大きな曲げ応力が作用してしまうことになる。 In this case, regardless of the shape of the seating surface portion 22 (for example, a circular seating surface portion may be used), the bending stress σ is generally set to be the above-mentioned bending stress with the thickness of the door inner panel 14 being t and the effective width of the one end 34 being b. Using moment M,
σ = M / Z (1) ( however, Z = bt 2/6) becomes. That is, when the effective width b is small, the section modulus is also small, so that a large bending stress acts.

これに対し、本実施形態では、上記したように、一端部３４の幅ｂ１が、他端部３８の幅ｂ２よりも拡大（長辺化）されている。たとえば、上記式（１）において、本実施形態では、ｂ→３ｂに拡大（長辺化）されていると考えると、拡大後の曲げ応力σ’は、σ’＝σ／３に減少する。   On the other hand, in the present embodiment, as described above, the width b1 of the one end portion 34 is larger (longer side) than the width b2 of the other end portion 38. For example, in the above formula (1), in the present embodiment, if it is considered that b → 3b has been expanded (lengthened), the expanded bending stress σ ′ decreases to σ ′ = σ / 3.

ここで、一端部３４を拡大する前の疲労寿命をＮ、拡大した後の疲労寿命をＮ’とすると、
（σ／σ’）κ＝Ｎ’／Ｎ （２）である。この式（２）より、Ｎ’＝３κ×Ｎとなり、一端部３４の拡大によって疲労寿命は３κ倍になる。 Here, if the fatigue life before expanding the one end 34 is N, and the fatigue life after expansion is N ′,
(Σ / σ ′) κ = N ′ / N (2). From this equation (2), N ′ = 3 κ × N, and the fatigue life becomes 3 κ times due to the enlargement of the one end 34.

このように、本実施形態では、ドアインナパネル１４の板厚を増大させることなく、ドアサッシュ１６からの荷重を長辺部３４で分散させることで、この荷重に対する耐久性を向上させることができる。ドアインナパネル１４の板厚を増大させないので、車両（自動車）を軽量化し、燃費向上に貢献できる。 Thus, in the present embodiment, without increasing the thickness of the door inner panel 14, by distributing the load from the de Asasshu 16 in the long side portion 34, it is possible to improve the durability against the load . Since the plate | board thickness of the door inner panel 14 is not increased, a vehicle (automobile) can be reduced in weight and it can contribute to a fuel consumption improvement.

なお、以下に挙げる理由から、本発明のように、一端部３４の幅ｂ１を広くした構造では、他端部３８の幅ｂ２を狭くすることが好ましい。   For the following reasons, in the structure in which the width b1 of the one end portion 34 is wide as in the present invention, it is preferable to narrow the width b2 of the other end portion 38.

まず、平板状のドアインナパネルに作用する曲げ応力をσ１とし、座面部２２における曲げ応力をσ２として、ｋ＝σ２／σ１という係数（座面形状効果係数）ｋを定義する。この係数ｋが小さい程、座面部２２では相対的に曲げ応力が小さくなる。 First, a coefficient (seat surface shape effect coefficient) k is defined as k = σ 2 / σ 1 where σ 1 is a bending stress acting on the flat door inner panel and σ 2 is a bending stress in the seat surface portion 22. The smaller the coefficient k, the smaller the bending stress at the seat surface portion 22.

ここで、図４に示すように、中央に固定部３２が設けられた四角形の座面部２４を想定し、座面部２４を裏面側（凹んでいる側）から見た横方向の内寸Ｘ、縦方向の内寸Ｙ（座面部２４の凹み側の深さは５ｍｍとしている）との組み合わせから、係数ｋに関し、以下の表１及び図５に示す関係が得られる。   Here, as shown in FIG. 4, assuming a square seat surface portion 24 having a fixing portion 32 at the center, the inner dimension X in the horizontal direction when the seat surface portion 24 is viewed from the back surface side (the recessed side), The relationship shown in the following Table 1 and FIG. 5 is obtained with respect to the coefficient k from the combination with the internal dimension Y in the vertical direction (the depth on the concave side of the seating surface portion 24 is 5 mm).

Figure 0004701989
Figure 0004701989

また、σ２＝ｋ×Ｍ／Ｚの関係がある。これらから、一般的に座面部２４が小さい程、座面部２４の曲げ応力を小さくできることがわかる。すなわち、本発明のように、一端部３４の幅ｂ１を広くした構成では、他端部３８側の幅ｂ２を小さくするしことが好ましい。 Further, there is a relationship of σ 2 = k × M / Z. From these, it can be seen that the bending stress of the seating surface portion 24 can generally be reduced as the seating surface portion 24 is smaller. That is, in the configuration in which the width b1 of the one end portion 34 is increased as in the present invention, it is preferable to reduce the width b2 on the other end portion 38 side.

本発明の一実施形態の固定部材構造が適用された自動車のドアの構造を示す概略図である。It is the schematic which shows the structure of the door of the motor vehicle to which the fixing member structure of one Embodiment of this invention was applied. 本発明の一実施形態の固定部材構造を示す斜視図である。It is a perspective view which shows the fixing member structure of one Embodiment of this invention. 本発明の一実施形態の固定部材構造を示し、（Ａ）は平面図、（Ｂ）が座面部のみの正面図である。The fixed member structure of one Embodiment of this invention is shown, (A) is a top view, (B) is a front view of only a seat surface part. 本発明において座面部の大きさと曲げ応力との関係を考慮する際に想定した座面部を示す斜視図である。It is a perspective view which shows the seat surface part assumed when considering the relationship between the magnitude | size of a seat surface part and bending stress in this invention. 座面部の大きさと座面形状効果係数との関係を示すグラフである。It is a graph which shows the relationship between the magnitude | size of a seat surface part, and a seat surface shape effect coefficient.

符号の説明Explanation of symbols

１２ 固定部材構造
１４ ドアインナパネル
１６ ドアサッシュ
１８ ドアガラス
２０ 昇降装置
２２ 座面部
２４ 座面部
２６ ボルト
２８ ナット
３０ ブラケット
３０Ｂ 屈曲部
３２ 固定部
３４ 一端部
３６ 長辺部
３８ 他端部
ｂ 有効幅
ｂ１ 幅（有効幅）
ｂ２ 幅（有効幅）
Ｆ 力
Ｍ 曲げモーメント DESCRIPTION OF SYMBOLS 12 Fixed member structure 14 Door inner panel 16 Door sash 18 Door glass 20 Lifting device 22 Seat surface part 24 Seat surface part 26 Bolt 28 Nut 30 Bracket 30B Bending part 32 Fixing part 34 One end part 36 Long side part 38 Other end part b Effective width b1 Width (effective width)
b2 width (effective width)
F Force M Bending moment

Claims (1)

ドアインナパネルに設けられ、このドアインナパネルを局所的に板厚方向に曲げることで板厚方向に見て略三角形状に突出された座面部と、
前記座面部に設けられると共に、ブラケットを介してドアサッシュが固定される固定部と、
を備え、
前記座面部の前記インナパネルの縁部に近い側の一端部は、この一端部に対して固定部とは反対側の他端部よりも固定部までの距離が長く、かつ、前記略三角形状の辺の１つにより構成されて、ドアインナパネルの板状部分と座面部との境界部分における上下方向に沿った部分の長さである有効幅が前記他端部の有効幅よりも長い長辺部とされており、
前記ブラケットは、前記固定部と前記一端部との間にドアサッシュからの車幅方向内向きの力が作用するように、上下方向で見て前記座面部に対し車幅方向に屈曲した屈曲部でドアサッシュと固定されていることを特徴とする固定部材構造。 A seat surface portion provided on the door inner panel and projecting in a substantially triangular shape when viewed in the plate thickness direction by locally bending the door inner panel in the plate thickness direction,
A fixing portion Rutotomoni provided on the seat surface portion, a door sash via the bracket is fixed,
With
One end of the seat surface near the edge of the inner panel has a longer distance to the fixed part than the other end opposite to the fixed part with respect to the one end, and the substantially triangular shape. The effective width which is the length of the part along the up-down direction in the boundary part of the plate-shaped part of a door inner panel and a seat surface part is longer than the effective width of the said other end part. It is considered as a side ,
The bracket is a bent portion bent in the vehicle width direction with respect to the seat surface portion when viewed in the vertical direction so that an inward force in the vehicle width direction from the door sash acts between the fixed portion and the one end portion. Fixed member structure characterized by being fixed to the door sash .
JP2005304804A 2005-10-19 2005-10-19 Fixed member structure Expired - Fee Related JP4701989B2 (en)

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JP2010023690A (en) * 2008-07-18 2010-02-04 Kanto Auto Works Ltd Window member mounting structure of automobile
JP2012240533A (en) * 2011-05-18 2012-12-10 Toyota Motor Corp Glass frame tightening structure

Citations (3)

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Publication number Priority date Publication date Assignee Title
JPH06106975A (en) * 1992-09-24 1994-04-19 Mazda Motor Corp Vehicle door structure
JPH06270667A (en) * 1993-03-17 1994-09-27 Nissan Motor Co Ltd Door structure for automobile
JP2004189164A (en) * 2002-12-13 2004-07-08 Shiroki Corp Door sash

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06106975A (en) * 1992-09-24 1994-04-19 Mazda Motor Corp Vehicle door structure
JPH06270667A (en) * 1993-03-17 1994-09-27 Nissan Motor Co Ltd Door structure for automobile
JP2004189164A (en) * 2002-12-13 2004-07-08 Shiroki Corp Door sash

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