JP2010228501A - Vehicle body structure of cabin front part - Google Patents

Vehicle body structure of cabin front part Download PDF

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Publication number
JP2010228501A
JP2010228501A JP2009076184A JP2009076184A JP2010228501A JP 2010228501 A JP2010228501 A JP 2010228501A JP 2009076184 A JP2009076184 A JP 2009076184A JP 2009076184 A JP2009076184 A JP 2009076184A JP 2010228501 A JP2010228501 A JP 2010228501A
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joint
vehicle body
stiffener
body structure
cowl top
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JP2009076184A
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Japanese (ja)
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Motonori Matsuki
基典 松木
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Suzuki Motor Corp
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Suzuki Motor Corp
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Priority to JP2009076184A priority Critical patent/JP2010228501A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicle body structure of a cabin front part capable of reducing the number of part items and manufacturing manhours, by abolishing a reinforcing member of a stiffener fixing part. <P>SOLUTION: This vehicle body structure of the cabin front part of an automobile is constituted so that a front end part 52 of a stiffener 5 extended to the front from a steering support member 4, is fixed to a joining part 12 between a dash panel 1 and a cowl top panel 2 arranged in its upper part. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は、自動車の車室前部の車体構造に関し、さらに詳しくは、インストルメントパネルの前方でステアリングサポートメンバーの剛性を補填するスティフナーの固定構造に係わるものである。   The present invention relates to a vehicle body structure at the front of a passenger compartment of an automobile, and more particularly, to a stiffener fixing structure that compensates for the rigidity of a steering support member in front of an instrument panel.

自動車の車室前部には、車体側壁間にステアリングサポートメンバーが架設され、ステアリングサポートメンバーにステアリングコラムが取り付けられている。ステアリングサポートメンバーは鋼管製で所定の強度および剛性を有しているが、車室全幅に亘って延在する長尺な部材であるため、ステアリングコラムに対する支持剛性を補填するために、ステアリングサポートメンバーと、車室前部を画成する車体パネルとを連結するスティフナーが配設されている(例えば特許文献1を参照)。   A steering support member is installed between the side walls of the vehicle body at the front part of the vehicle compartment, and a steering column is attached to the steering support member. The steering support member is made of steel pipe and has a predetermined strength and rigidity. However, since the steering support member is a long member extending over the entire width of the passenger compartment, the steering support member is used to compensate for the support rigidity to the steering column. A stiffener that connects the vehicle body panel that defines the front of the vehicle compartment is disposed (see, for example, Patent Document 1).

特開2002−205663号公報JP 2002-205663 A

しかし、ステアリングサポートメンバー前方のダッシュパネルやカウルトップパネルなどの車体パネルは薄板構造であり、スティフナーを固定するには強度不足であるため、リインフォースメントなどの補強部材で取付け座面を補強する必要があり、その分、部品点数や製造工数が増加することとなった。   However, the body panels such as the dash panel and the cowl top panel in front of the steering support member have a thin plate structure and are insufficient in strength to fix the stiffener, so it is necessary to reinforce the mounting seat with a reinforcement member such as reinforcement. As a result, the number of parts and manufacturing man-hours increased.

本発明はこのような実状に鑑みてなされたものであって、その目的は、スティフナー固定部の補強部材を廃止し、部品点数および製造工数を削減可能な車室前部の車体構造を提供することにある。   The present invention has been made in view of such a situation, and an object of the present invention is to provide a vehicle body structure at the front portion of a vehicle compartment that can eliminate the stiffener fixing member and reduce the number of parts and the number of manufacturing steps. There is.

上記従来技術の有する課題を解決するため、本発明は、自動車の車室前部の車体構造において、ダッシュパネルとその上部に配設されたカウルトップパネルとの接合部に、ステアリングサポートメンバーから前方に延設されたスティフナーの前端部が固定されていることを特徴とする。   In order to solve the above-described problems of the prior art, the present invention provides a vehicle body structure in a front part of a passenger compartment of an automobile, in which a dash panel and a cowl top panel disposed above the dash panel are joined forward from a steering support member. The front end portion of the stiffener extended to the head is fixed.

本発明に係る車室前部の車体構造は、上記構成により、ダッシュパネルとカウルトップパネルとの接合部では、2枚パネルが重合されることによる板厚の増加と、積層構造により面剛性が向上し、リインフォースメントなどの補強部材を併用しなくてもスティフナー固定部に必要な強度が得られるので、部品点数および製造工数を削減できる。   The vehicle body structure at the front part of the passenger compartment according to the present invention has an increase in plate thickness due to the superposition of two panels at the joint between the dash panel and the cowl top panel, and surface rigidity due to the laminated structure. The strength required for the stiffener fixing part can be obtained without using a reinforcing member such as reinforcement, so the number of parts and the number of manufacturing steps can be reduced.

また本発明において、前記接合部が、前記ダッシュパネルの上縁部と、前記カウルトップパネルの下縁部とを重合させて接合した接合部であり、前記スティフナー前端部が平板状をなし、前記接合部の車室側に重合され、該前端部および前記接合部を貫通する締結部材で締結固定されている態様では、接合部にボルトなどの締結に必要なスペースのみ確保すれば良く、かつ、平板状をなすスティフナー前端部と接合部とが共締めされることによる取付け座面の補強効果も見込める。   Further, in the present invention, the joint portion is a joint portion obtained by polymerizing and joining the upper edge portion of the dash panel and the lower edge portion of the cowl top panel, and the stiffener front end portion has a flat plate shape, In the aspect that is superposed on the vehicle compartment side of the joint and is fastened and fixed by a fastening member that penetrates the front end and the joint, it is only necessary to secure a space necessary for fastening such as a bolt in the joint, and A reinforcing effect of the mounting seat surface can also be expected by fastening the stiffener front end portion and the joint portion in the form of a flat plate together.

さらに本発明において、前記接合部が、前記締結部材の締結固定部において拡幅されている態様では、ダッシュパネルとカウルトップパネルとの一般の接合部に対して、スティフナー前端部の取付け座面となる接合部が局所的に拡幅されることで、平板状をなすスティフナー前端部との接合強度をさらに向上できる。   Furthermore, in this invention, in the aspect in which the said junction part is widened in the fastening fixing | fixed part of the said fastening member, it becomes a mounting seat surface of a stiffener front-end part with respect to the general junction part of a dash panel and a cowl top panel. By jointly widening the joint, the joint strength with the flat stiffener front end can be further improved.

本発明実施形態に係る自動車の車室前部を示す車室内後方から見た斜視図である。It is the perspective view seen from the vehicle interior back which shows the compartment front part of the car concerning the embodiment of the present invention. 図1のA−A断面図である。It is AA sectional drawing of FIG.

以下、本発明の実施の形態について、図面を参照しながら詳細に説明する。
図1おいて、車室10の前部を画成するダッシュパネル1の上部には、フロントウインドウ6の下縁を画成すべく車幅方向に延在するカウルトップパネル2が接合されている。ダッシュパネル1の左右両側は、車体側壁の一部を構成するダッシュサイドパネル3,3に接合されている。
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
In FIG. 1, a cowl top panel 2 extending in the vehicle width direction is joined to an upper portion of a dash panel 1 that defines a front portion of a vehicle compartment 10 to define a lower edge of a front window 6. The left and right sides of the dash panel 1 are joined to the dash side panels 3 and 3 constituting a part of the side wall of the vehicle body.

ダッシュパネル1の後方には、車幅方向に延在するパイプ状のステアリングサポートメンバー4が配設されている。ステアリングサポートメンバー4の左右両側の端部にはブラケット43,43が固着されており、これらのブラケット43,43を介して、ステアリングサポートメンバー4は左右のダッシュサイドパネル3,3に固定される。   A pipe-like steering support member 4 extending in the vehicle width direction is disposed behind the dash panel 1. Brackets 43 and 43 are fixed to the left and right ends of the steering support member 4, and the steering support member 4 is fixed to the left and right dash side panels 3 and 3 via these brackets 43 and 43.

ステアリングサポートメンバー4は、図中右側となる運転席側の大径部に、図示しないステアリングコラムを取付けるための一対のブラケット41,41が固着される一方、図中左側となる助手席側が相対的に小径に構成され、軽量化が図られている。ステアリングサポートメンバー4の中央および助手席側には、図示しない車載機器類を取付けるための複数のステイが下方に延設されている。さらに、ステアリングサポートメンバー4のステアリングコラム取付け部(41,41)から前方やや斜め上方に向けてスティフナー5が延設されている。   The steering support member 4 has a pair of brackets 41 and 41 for attaching a steering column (not shown) fixed to a large diameter portion on the driver's seat side on the right side in the figure, while the passenger seat side on the left side in the figure is relatively It has a small diameter and is lightened. At the center of the steering support member 4 and the passenger seat side, a plurality of stays for attaching in-vehicle devices (not shown) are extended downward. Further, a stiffener 5 is extended from the steering column mounting portion (41, 41) of the steering support member 4 toward the front and slightly upward.

スティフナー5は、チャンネル状にプレス成形され、図2に示すように、後端部51においてステアリングサポートメンバー4に溶接固定される一方、前端部52は上方に折曲されて車体パネル側への取付け部となっている。また、スティフナー5の中間部には、曲げ強度を調整するための開口53および複数の切欠54が形成されている。この構成により、スティフナー5に、通常走行時におけるステアリングコラムに対する支持剛性を補填する所定の強度および剛性を確保する一方、衝突時など、前方から過大な衝撃荷重が入力された場合に、切欠54および開口53を起点としてスティフナー5が変形することで衝撃吸収がなされる。   As shown in FIG. 2, the stiffener 5 is press-molded into a channel shape, and is fixed to the steering support member 4 by welding at the rear end portion 51, while the front end portion 52 is bent upward and attached to the vehicle body panel side. Has become a department. Further, an opening 53 and a plurality of notches 54 for adjusting the bending strength are formed in an intermediate portion of the stiffener 5. With this configuration, the stiffener 5 has a predetermined strength and rigidity that compensates for the support rigidity with respect to the steering column during normal travel, while the notch 54 and the notch 54 and the like when an excessive impact load is input from the front, such as during a collision. Shock absorption is achieved by the stiffener 5 being deformed starting from the opening 53.

本発明に係るスティフナー5の前端部52は、ダッシュパネル1の上縁部の車両前後方向前方側に、カウルトップパネル2の車両前後方向後側に位置した下縁部を重合させて接合した接合部12に固定されている。この接合部12では、図2に示すように、ダッシュパネル1とカウルトップパネル2の2枚パネルが重合されることで板厚が増加するとともに、2枚パネルの積層構造により面剛性が向上しており、このような接合部12に平板状のスティフナー前端部52を重ね、接合部12およびスティフナー前端部52の貫通孔に、エンジン室側から挿通したボルト7を、スティフナー前端部52の車室10側の面に溶接固定されたウエルドナット8に螺合締結することにより、スティフナー前端部52は接合部12に共締め固定されている。   The front end portion 52 of the stiffener 5 according to the present invention is a joint obtained by superposing and joining the lower edge portion located on the rear side in the vehicle front-rear direction of the cowl top panel 2 on the front side in the vehicle front-rear direction of the upper edge portion of the dash panel 1. It is fixed to the part 12. As shown in FIG. 2, in the joint portion 12, the two panels of the dash panel 1 and the cowl top panel 2 are superposed to increase the plate thickness, and the laminated structure of the two panels improves the surface rigidity. The flat stiffener front end 52 is overlapped with such a joint 12, and the bolt 7 inserted from the engine compartment side into the through hole of the joint 12 and the stiffener front end 52 is connected to the casing of the stiffener front end 52. The stiffener front end portion 52 is fastened and fixed to the joint portion 12 by screwing and fastening to a weld nut 8 that is welded and fixed to the surface on the 10 side.

また、実施形態では、図1に示すように、接合部12の上方に位置したカウルトップパネル2に緩傾斜面21(段部)が形成され、すなわち、ダッシュパネル1とカウルトップパネル2との一般的な接合部12の上方に接合面と連続した平面が存在しない。そこで、スティフナー前端部52の固定部において、ダッシュパネル1の上縁部を上方に円弧状に湾出させ、かつ、カウルトップパネル2に略部分円筒状または部分円錐状に膨出した膨出部22を形成している。   Further, in the embodiment, as shown in FIG. 1, a gently inclined surface 21 (step portion) is formed on the cowl top panel 2 positioned above the joint portion 12, that is, between the dash panel 1 and the cowl top panel 2. There is no plane continuous with the joint surface above the general joint 12. Therefore, in the fixed portion of the stiffener front end portion 52, the upper edge of the dash panel 1 protrudes upward in an arc shape, and the bulging portion bulges into the cowl top panel 2 in a substantially partial cylindrical shape or a partial conical shape. 22 is formed.

上記構成により、ダッシュパネル1とカウルトップパネル2との一般的な接合部12に対して、スティフナー前端部52の取付け座面となる接合部12が局所的に拡幅され、スティフナー前端部52との接合面の拡大により接合強度が向上するとともに、スティフナー5に対向した膨出部22の立体形状により、取付け座面周辺におけるカウルトップパネル2の剛性が向上する利点がある。また、一般的な接合部12の上方に沿って車幅方向に延在する緩傾斜面21の階段形状による、接合部12自体の剛性向上も、取付け座面周辺の剛性向上に寄与する。なお、膨出部22は、略三角形状、略台形状等であっても良い。   With the above configuration, the joint 12 serving as the mounting seating surface of the stiffener front end 52 is locally widened with respect to the general joint 12 of the dash panel 1 and the cowl top panel 2. The joint strength is improved by expanding the joint surface, and the three-dimensional shape of the bulging portion 22 facing the stiffener 5 is advantageous in that the rigidity of the cowl top panel 2 around the mounting seat surface is improved. Further, the rigidity of the joint 12 itself due to the staircase shape of the gently inclined surface 21 extending in the vehicle width direction along the general joint 12 also contributes to the improvement of the rigidity around the mounting seat surface. Note that the bulging portion 22 may have a substantially triangular shape, a substantially trapezoidal shape, or the like.

さらに、ダッシュパネル1とカウルトップパネル2との一般的な接合部12は、適宜間隔でスポット溶接されるが、上記のように取付け座面となる接合部12が局所的に拡幅されることで、貫通孔に隣接して、あるいは貫通孔を囲むようにスポット溶接点を設定可能となる利点がある。なお、接合部12の拡幅は、ダッシュパネル1の上縁部、カウルトップパネル2の下縁部の両方でなされても良いし、いずれか一方のみ拡幅されても良い。   Furthermore, a general joint 12 between the dash panel 1 and the cowl top panel 2 is spot-welded at an appropriate interval. As described above, the joint 12 serving as a mounting seat surface is locally widened. There is an advantage that the spot welding point can be set adjacent to or surrounding the through hole. The joint portion 12 may be widened at both the upper edge portion of the dash panel 1 and the lower edge portion of the cowl top panel 2, or only one of them may be widened.

以上、本発明の実施の形態について述べたが、本発明は上記実施形態に限定されるものではなく、本発明の技術的思想に基づいてさらに各種の変形および変更が可能であることを付言する。   Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications and changes can be made based on the technical idea of the present invention. .

1 ダッシュパネル
2 カウルトップパネル
3 ダッシュサイドパネル
4 ステアリングサポートメンバー
5 スティフナー
7 ボルト
8 ウエルドナット
10 車室
12 接合部
22 膨出部
52 前端部
DESCRIPTION OF SYMBOLS 1 Dash panel 2 Cowl top panel 3 Dash side panel 4 Steering support member 5 Stiffener 7 Bolt 8 Weld nut 10 Car compartment 12 Joint part 22 Expansion part 52 Front end part

Claims (3)

自動車の車室前部の車体構造において、ダッシュパネルとその上部に配設されたカウルトップパネルとの接合部に、ステアリングサポートメンバーから前方に延設されたスティフナーの前端部が固定されていることを特徴とする車室前部の車体構造。   The front end of the stiffener that extends forward from the steering support member is fixed to the joint between the dash panel and the cowl top panel disposed on the upper part of the vehicle body structure at the front of the vehicle compartment. The vehicle body structure at the front of the passenger compartment. 前記接合部が、前記ダッシュパネルの上縁部と、前記カウルトップパネルの下縁部とを重合させて接合した接合部であり、前記スティフナー前端部が平板状をなし、前記接合部の車室側に重合され、該前端部および前記接合部を貫通する締結部材で締結固定されていることを特徴とする請求項1に記載の車室前部の車体構造。   The joint portion is a joint portion obtained by polymerizing and joining the upper edge portion of the dash panel and the lower edge portion of the cowl top panel, and the stiffener front end portion has a flat plate shape, and the casing of the joint portion The vehicle body structure at the front part of the vehicle compartment according to claim 1, wherein the vehicle body structure is superposed on the side and fastened and fixed by a fastening member penetrating the front end part and the joint part. 前記接合部が、前記締結部材の締結固定部において拡幅されていることを特徴とする請求項2に記載の車室前部の車体構造。
The vehicle body structure at the front portion of the vehicle compartment according to claim 2, wherein the joint portion is widened at a fastening and fixing portion of the fastening member.
JP2009076184A 2009-03-26 2009-03-26 Vehicle body structure of cabin front part Withdrawn JP2010228501A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012091556A (en) * 2010-10-25 2012-05-17 Mazda Motor Corp Cowl section structure of vehicle

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012091556A (en) * 2010-10-25 2012-05-17 Mazda Motor Corp Cowl section structure of vehicle

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