JP5630702B2 - Structure around the bottom of the dash panel - Google Patents

Structure around the bottom of the dash panel Download PDF

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JP5630702B2
JP5630702B2 JP2010260111A JP2010260111A JP5630702B2 JP 5630702 B2 JP5630702 B2 JP 5630702B2 JP 2010260111 A JP2010260111 A JP 2010260111A JP 2010260111 A JP2010260111 A JP 2010260111A JP 5630702 B2 JP5630702 B2 JP 5630702B2
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floor
dash panel
tunnel
footrest member
footrest
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JP2012111282A (en
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秀行 玉置
秀行 玉置
幸太 藤田
幸太 藤田
幸一郎 高瀬
幸一郎 高瀬
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Suzuki Motor Co Ltd
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Suzuki Motor Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N3/00—Arrangements or adaptations of other passenger fittings, not otherwise provided for
    • B60N3/06—Arrangements or adaptations of other passenger fittings, not otherwise provided for of footrests

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  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Body Structure For Vehicles (AREA)

Description

本発明は、車室内前方に設けられるダッシュパネル下部周辺の構造に関する。   The present invention relates to a structure around a lower portion of a dash panel provided in front of a vehicle interior.

車両の室内前方にはダッシュパネルが設けられており、多くの車両の室内にはドライブシャフト等を通すフロアトンネルが設けられている。このダッシュパネルの下部には、フロアトンネルの前部を形成する部分（以下、「トンネル前部」という）が設けられる。また、ダッシュパネル下部のトンネル前部に対して車幅方向両側には、フロアの前部を形成する部分（以下、「フロア前部」という）が設けられ、このフロア前部の下面にサイドメンバが取付けられる。ダッシュパネル下部には、トンネル前部及びフロア前部の前端から上下方向に沿って形成される壁部が設けられる。さらに、フロア前部の上面にはフットレストが取付けられている。   A dash panel is provided in front of the interior of the vehicle, and a floor tunnel through which a drive shaft or the like passes is provided in the interior of many vehicles. In the lower part of the dash panel, a portion forming the front portion of the floor tunnel (hereinafter referred to as “tunnel front portion”) is provided. Further, on both sides in the vehicle width direction with respect to the tunnel front part at the lower part of the dash panel, there are provided portions for forming the front part of the floor (hereinafter referred to as “floor front part”). Is installed. At the lower part of the dash panel, a wall part is formed along the vertical direction from the front end of the tunnel front part and the floor front part. Further, a footrest is attached to the upper surface of the front part of the floor.

車両走行中にタイヤに加えられる荷重が、サスペンションとストラットタワーとを経由してダッシュパネルに伝えられる場合、この荷重によってダッシュパネルが振動し、さらに、この振動によって車室内に騒音が発生することとなる。そのため、このような振動を抑制することが要求されている。このような要求に応じるために、例えば、特許文献１では、ダッシュパネルの壁部に複数の湾曲部が設けられている。   When the load applied to the tires while the vehicle is traveling is transmitted to the dash panel via the suspension and the strut tower, the dash panel vibrates due to this load, and furthermore, this vibration causes noise in the passenger compartment. Become. Therefore, it is required to suppress such vibration. In order to meet such a requirement, for example, in Patent Document 1, a plurality of curved portions are provided on the wall portion of the dash panel.

また、車両前方から車体に荷重が加えられた場合、この荷重がサイドメンバを経由して伝えられるので、サイドメンバ周辺のみが大きく変形して、荷重が十分に吸収できないことがある。そのため、サイドメンバから該サイドメンバの周辺部分に荷重を分散して、車両前方からの荷重を効率的に吸収することが要求されている。このような要求に応じるために、例えば、特許文献２では、フットレストに、ダッシュパネルのトンネル前部と、ダッシュパネルのフロア前部のサイドメンバ取付位置とにそれぞれ結合する補強部材が設けられている。   Further, when a load is applied to the vehicle body from the front of the vehicle, the load is transmitted via the side member, so that only the periphery of the side member may be greatly deformed and the load may not be sufficiently absorbed. Therefore, it is required to disperse the load from the side member to the peripheral portion of the side member and efficiently absorb the load from the front of the vehicle. In order to meet such a requirement, for example, in Patent Document 2, a reinforcing member is provided on the footrest to be coupled to the tunnel front portion of the dash panel and the side member mounting position of the floor front portion of the dash panel. .

特開２００６−１５１１０４号公報JP 2006-151104 A 特開平１１−３１０１６１号公報JP-A-11-310161

しかしながら、上述のようなダッシュパネルの振動は、壁部及びトンネル前部の間の部分と、壁部及びフロア前部の間の部分とを節として振動するダッシュパネルの振動モードに大きく影響している。そのため、特許文献１のようにダッシュパネルの壁部のみに湾曲部を設けた構造では、ダッシュパネルの壁部の剛性が高まるに過ぎないので、このような振動モードの振動を十分に抑えることができない。さらに、特許文献１の構造では、上述のように車両前方から車体に加えられる荷重を、サイドメンバからその周囲に分散させて効率的に吸収することができない。   However, the vibration of the dash panel as described above greatly affects the vibration mode of the dash panel that vibrates with the portion between the wall portion and the front portion of the tunnel and the portion between the wall portion and the front portion of the floor as nodes. Yes. Therefore, in the structure in which the curved portion is provided only in the wall portion of the dash panel as in Patent Document 1, only the rigidity of the wall portion of the dash panel is increased, so that vibration in such a vibration mode can be sufficiently suppressed. Can not. Furthermore, in the structure of Patent Document 1, the load applied to the vehicle body from the front of the vehicle as described above cannot be efficiently absorbed by being distributed from the side members to the periphery thereof.

特許文献２のように、フットレストの補強部材のそれぞれをダッシュパネルのトンネル前部とダッシュパネルのフロア前部のサイドメンバ取付位置とに結合した構造では、ダッシュパネルのトンネル前部及びフロア前部の剛性が高められるに過ぎず、上述のような振動モードの振動を十分に抑えることができない。また、特許文献２の構造では、車両前方から車体に加えられる荷重を、サイドメンバからダッシュパネルのフロア前部及びトンネル前部に分散させるが、車両前方からの荷重を十分に吸収することができない。   As in Patent Document 2, in the structure in which each of the reinforcing members of the footrest is coupled to the tunnel front portion of the dash panel and the side member mounting position of the floor front portion of the dash panel, the tunnel front portion and the floor front portion of the dash panel are arranged. The rigidity is only increased, and the vibration in the vibration mode as described above cannot be sufficiently suppressed. In the structure of Patent Document 2, the load applied to the vehicle body from the front of the vehicle is distributed from the side member to the floor front portion of the dash panel and the tunnel front portion, but the load from the front of the vehicle cannot be sufficiently absorbed. .

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、ダッシュパネルの振動を抑制し、かつ車両前方から車体に加えられる荷重を効率的に吸収できるダッシュパネル下部周辺の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 suppress the vibration of the dash panel and to efficiently absorb the load applied to the vehicle body from the front of the vehicle. Is to provide.

課題を解決するために、本発明のダッシュパネル下部周辺の構造は、車両前後方向に沿ったフロアトンネルの前部を構成するように、ダッシュパネル下部の一部を横断面略コ字状に形成したトンネル前部と、ダッシュパネル下部の一部を前記トンネル前部から車幅方向の運転席側に延びるように形成したフロア前部と、前記ダッシュパネル下部の一部を、前記トンネル前部及び前記フロア前部の前側上端から上方に向かって延びるように形成した壁部とを備えているダッシュパネル下部周辺の構造であって、前記フロア前部が車両前方側斜め上方に傾斜して形成され、前記トンネル前部と前記フロア前部と前記壁部とに跨ってフットレスト部材が配設され、前記フットレスト部材の前端部が、前記壁部の後面に沿って配置され、前記フットレスト部材の後端部が、前記フロア前部の傾斜の後端寄りにて、前記トンネル前部の上端面及び前記フロア前部の上面に沿って配置され、前記フットレスト部材の運転席側端部が、前記フロア前部の上面に沿って配置され、前記フットレスト部材の助手席側端部が、前記トンネル前部の上端面の助手席側端に沿って配置され、前記フットレスト部材の前端部及び後端部間にて前記トンネル前部から前記フロア前部に連続して配置される前記フットレスト部材の部分が、フットレストを構成するように屈曲形成されて、前記フットレスト部材と前記トンネル前部と前記フロア前部とによって閉断面が形成され、前記フットレスト部材の前端部が前記壁部に接合され、前記フットレスト部材の後端部が前記トンネル前部及び前記フロア前部に接合され、前記フットレスト部材の運転席側端部が前記フロア前部に接合されている。
In order to solve the problem, the structure around the lower part of the dash panel of the present invention is formed so that a part of the lower part of the dash panel has a substantially U-shaped cross section so as to constitute the front part of the floor tunnel along the vehicle longitudinal direction. A tunnel front part, a floor front part formed so that a part of a lower part of the dash panel extends from the front part of the tunnel to a driver's seat side in the vehicle width direction, a part of the lower part of the dash panel, the front part of the tunnel and A dash panel lower peripheral structure including a wall portion formed so as to extend upward from a front upper end of the floor front portion, wherein the floor front portion is formed to be inclined obliquely upward on the vehicle front side. the footrest member is disposed across the tunnel front and the floor front and the wall portion, the front end portion of the footrest member is disposed along the rear face of the wall portion, the Futtore The rear end portion of the foot member is disposed along the upper end surface of the tunnel front portion and the upper surface of the floor front portion near the rear end of the slope of the floor front portion, and the driver seat side end portion of the footrest member Is disposed along the upper surface of the front portion of the floor, and the passenger seat side end portion of the footrest member is disposed along the passenger seat side end of the upper end surface of the tunnel front portion, and the front end portion of the footrest member and A portion of the footrest member arranged continuously from the front part of the tunnel to the front part of the floor between the rear end parts is bent so as to form a footrest, and the footrest member, the tunnel front part, and the closed section is formed by the floor front the front end of the footrest member is joined to the wall portion, the rear end portion is joined is in the tunnel front and the floor front portion of the footrest member , The driver's seat side end portion of the footrest member is bonded to the floor front.

本発明のダッシュパネル下部周辺の構造では、前記ダッシュパネル下部のフロア前部の下面にサイドメンバが取付けられ、前記閉断面が、前記トンネル前部から、該トンネル前部の運転席側側面の下端と前記フロア前部の前記サイドメンバ取付位置との間の車幅方向中間位置より前記サイドメンバ側の位置まで、跨って配置されている。さらに好ましくは、前記フットレスト部材が、前記トンネル前部から、前記フロア前部の前記サイドメンバ取付位置まで跨って配置されて、前記フロア前部と前記フットレスト部材の運転席側端部と前記サイドメンバとが重ねられた状態で互いに重ね接合されている。
In the structure around the lower part of the dash panel according to the present invention, a side member is attached to the lower surface of the floor front part at the lower part of the dash panel, and the closed cross section extends from the front part of the tunnel to the lower end of the side surface of the driver seat on the front part of the tunnel And a position in the vehicle width direction between the side member mounting position of the front part of the floor and the position on the side member side. More preferably, the footrest member is disposed straddling from the tunnel front part to the side member mounting position of the floor front part, and the floor front part , the driver seat side end part of the footrest member , and the side member. Are overlapped and joined together.

本発明のダッシュパネル下部周辺の構造では、前記フットレスト部材と前記壁部とが複数の接合部によって接合され、前記複数の接合部が車幅方向一列に互いに間隔を空けて配置されている。   In the structure around the lower portion of the dash panel of the present invention, the footrest member and the wall portion are joined by a plurality of joint portions, and the plurality of joint portions are arranged at intervals in a row in the vehicle width direction.

本発明によれば、以下の効果を得ることができる。
本発明のダッシュパネル下部周辺の構造は、車両前後方向に沿ったフロアトンネルの前部を構成するように、ダッシュパネル下部の一部を横断面略コ字状に形成したトンネル前部と、ダッシュパネル下部の一部を前記トンネル前部から車幅方向の運転席側に延びるように形成したフロア前部と、前記ダッシュパネル下部の一部を、前記トンネル前部及び前記フロア前部の前側上端から上方に向かって延びるように形成した壁部とを備えているダッシュパネル下部周辺の構造であって、前記フロア前部が車両前方側斜め上方に傾斜して形成され、前記トンネル前部と前記フロア前部と前記壁部とに跨ってフットレスト部材が配設され、前記フットレスト部材の前端部が、前記壁部の後面に沿って配置され、前記フットレスト部材の後端部が、前記フロア前部の傾斜の後端寄りにて、前記トンネル前部の上端面及び前記フロア前部の上面に沿って配置され、前記フットレスト部材の運転席側端部が、前記フロア前部の上面に沿って配置され、前記フットレスト部材の助手席側端部が、前記トンネル前部の上端面の助手席側端に沿って配置され、前記フットレスト部材の前端部及び後端部間にて前記トンネル前部から前記フロア前部に連続して配置される前記フットレスト部材の部分が、フットレストを構成するように屈曲形成されて、前記フットレスト部材と前記トンネル前部と前記フロア前部とによって閉断面が形成され、前記フットレスト部材の前端部が前記壁部に接合され、前記フットレスト部材の後端部が前記トンネル前部及び前記フロア前部に接合され、前記フットレスト部材の運転席側端部が前記フロア前部に接合されている。
そのため、前記ダッシュパネル下部のトンネル前部、フロア前部、及び壁部に跨る範囲が前記フットレスト部材によって補強されることとなる。このような構成によって、前記壁部及び前記トンネル前部の間の部分と、前記壁部及び前記フロア前部の間の部分とを節として振動する振動モードの影響を抑制できる。よって、前記ダッシュパネルの振動を効率的に抑制できる。さらに、前記フットレスト部材が、前記ダッシュパネル下部のトンネル前部、フロア前部、及び壁部に跨って配置されており、その結果、車両前方から車体に荷重が加えられた場合に、この荷重を、前記フットレスト部材によって、前記ダッシュパネル下部周辺の広い範囲に効率的に分散できる。よって、車両前方から車体に加えられる荷重を効率的に吸収できる。
According to the present invention, the following effects can be obtained.
The structure around the lower part of the dash panel according to the present invention includes a tunnel front part in which a part of the lower part of the dash panel is formed in a substantially U-shaped cross section so as to constitute a front part of the floor tunnel along the vehicle longitudinal direction, A front part of the floor formed so that a part of the lower part of the panel extends from the front part of the tunnel to the driver's seat side in the vehicle width direction, and a part of the lower part of the dash panel is provided at the upper front end of the front part of the tunnel and the front part of the floor. A dash panel lower peripheral structure including a wall portion formed to extend upward from the vehicle, wherein the floor front portion is formed to be inclined obliquely upward on the vehicle front side, and the tunnel front portion and the footrest member is disposed across the floor front and said wall portion, the front end portion of the footrest member is disposed along the rear face of the wall portion, the rear end portion of the footrest member, before Near the rear end of the inclined front part of the floor, it is arranged along the upper end surface of the tunnel front part and the upper surface of the floor front part, and the driver seat side end part of the footrest member is on the upper surface of the floor front part. The passenger seat side end portion of the footrest member is disposed along the passenger seat side end of the upper end surface of the tunnel front portion, and the front side of the tunnel between the front end portion and the rear end portion of the footrest member. The portion of the footrest member that is continuously arranged from the front portion to the floor front portion is bent to form a footrest, and a closed cross section is formed by the footrest member, the tunnel front portion, and the floor front portion. is, the front end of the footrest member is joined to the wall portion, the rear end portion of the footrest member is joined to the tunnel front and the floor front, the footrest Driver's side end portion of the is joined to the floor front.
Therefore, the range spanning the tunnel front part, floor front part, and wall part below the dash panel is reinforced by the footrest member. With such a configuration, it is possible to suppress the influence of a vibration mode that vibrates with a portion between the wall portion and the tunnel front portion and a portion between the wall portion and the floor front portion as nodes. Therefore, the vibration of the dash panel can be efficiently suppressed. Further, the footrest member is disposed across the tunnel front part, floor front part, and wall part below the dash panel, and as a result, when a load is applied to the vehicle body from the front of the vehicle, this load is applied. The footrest member can be efficiently distributed over a wide area around the lower portion of the dash panel. Therefore, it is possible to efficiently absorb the load applied to the vehicle body from the front of the vehicle.

本発明のダッシュパネル下部周辺の構造では、前記ダッシュパネル下部のフロア前部の下面にサイドメンバが取付けられ、前記閉断面が、前記トンネル前部から、該トンネル前部の運転席側側面の下端と前記フロア前部の前記サイドメンバ取付位置との間の車幅方向中間位置より前記サイドメンバ側の位置まで、跨って配置されているので、車両前方から車体に加えられるとともに前記サイドメンバを経由して伝えられる荷重が、傾斜した前記フロア前部に対応する前記サイドメンバの傾斜部分に集中した場合に、前記フットレスト部材によって、前記サイドメンバから前記ダッシュパネル下部のトンネル前部、フロア前部、及び壁部に効率的に荷重を分散できる。さらに、屈曲形成された前記フットレスト部材の部分が剛性の高い前記サイドメンバに接近することとなり、前記ダッシュパネル下部の剛性が高められることとなる。よって、前記ダッシュパネルの振動をさらに効率的に抑制でき、かつ車両前方から車体に加えられる荷重をさらに効率的に吸収できる。   In the structure around the lower part of the dash panel according to the present invention, a side member is attached to the lower surface of the floor front part at the lower part of the dash panel, and the closed cross section extends from the front part of the tunnel to the lower end of the side surface of the driver seat on the front part of the tunnel. And the side member mounting position between the front side of the floor and the position on the side member side from the intermediate position in the vehicle width direction, so that it is added to the vehicle body from the front of the vehicle and passes through the side member When the load transmitted is concentrated on the inclined part of the side member corresponding to the inclined front part of the floor, the footrest member causes the front part of the tunnel, the front part of the floor below the dash panel from the side member, In addition, the load can be efficiently distributed to the wall portion. Further, the bent portion of the footrest member approaches the highly rigid side member, and the rigidity of the lower portion of the dash panel is increased. Therefore, the vibration of the dash panel can be suppressed more efficiently, and the load applied to the vehicle body from the front of the vehicle can be absorbed more efficiently.

本発明のダッシュパネル下部周辺の構造では、前記フットレスト部材が、前記トンネル前部から、前記フロア前部の前記サイドメンバ取付位置まで跨って配置されて、前記フロア前部と前記フットレスト部材の運転席側端部と前記サイドメンバとが重ねられた状態で互いに重ね接合されているので、前記フットレスト部材と前記サイドメンバとの接合部分によって、さらに前記ダッシュパネル下部の剛性が高められることとなる。よって、前記ダッシュパネルの振動をさらに効率的に抑制でき、かつ車両前方から車体に加えられる荷重をさらに効率的に吸収できる。
In the structure around the lower part of the dash panel according to the present invention, the footrest member is disposed across from the tunnel front part to the side member mounting position of the floor front part, and the driver seat of the floor front part and the footrest member Since the side end portion and the side member are overlapped and joined to each other, the joint portion between the footrest member and the side member further increases the rigidity of the lower portion of the dash panel. Therefore, the vibration of the dash panel can be suppressed more efficiently, and the load applied to the vehicle body from the front of the vehicle can be absorbed more efficiently.

本発明のダッシュパネル下部周辺の構造では、前記フットレスト部材と前記壁部とが複数の接合部によって接合され、前記複数の接合部が車幅方向一列に互いに間隔を空けて配置されているので、前記フットレスト部材と前記ダッシュパネルとの幅方向の剛性が高められることとなる。そのため、前記ダッシュパネル下部の剛性がさらに高められることとなる。よって、前記ダッシュパネルの振動をさらに効率的に抑制でき、かつ車両前方から車体に加えられる荷重をさらに効率的に吸収できる。   In the structure around the lower portion of the dash panel of the present invention, the footrest member and the wall portion are joined by a plurality of joint portions, and the plurality of joint portions are arranged at intervals in a row in the vehicle width direction. The rigidity in the width direction between the footrest member and the dash panel is increased. Therefore, the rigidity of the lower part of the dash panel is further enhanced. Therefore, the vibration of the dash panel can be suppressed more efficiently, and the load applied to the vehicle body from the front of the vehicle can be absorbed more efficiently.

本発明の実施形態に係るダッシュパネル下部周辺の構造を設けた車体フレームの車室内前部を車両進行方向右側から見た概略斜視図である。It is the schematic perspective view which looked at the vehicle interior front part of the vehicle body frame which provided the structure of the dash panel lower part periphery which concerns on embodiment of this invention from the vehicle advancing direction right side. 図１の車体フレームの前方側の一部及びダッシュパネルの一部を省略して、ダッシュパネル下部周辺の構造を車両前方側から見た概略斜視図である。FIG. 2 is a schematic perspective view of a structure around a lower portion of the dash panel viewed from the front side of the vehicle, omitting a part of the front side of the vehicle body frame and a part of the dash panel of FIG. 1. 本発明の実施形態に係るダッシュパネル下部周辺の構造を車室内側から見た概略斜視図である。It is the schematic perspective view which looked at the structure of the dash panel lower part periphery which concerns on embodiment of this invention from the vehicle interior side. 図３のＡ−Ａ断面図である。It is AA sectional drawing of FIG. 本発明の実施形態において、フットレスト部材周辺を拡大して示す概略斜視図である。In embodiment of this invention, it is a schematic perspective view which expands and shows the footrest member periphery.

本発明の実施形態に係るダッシュパネル下部周辺の構造を説明する。
図１を参照すると、車体１の車室内下部には、ドライブシャフト等（図示せず）を通すように構成されたフロアトンネル本体２と、フロアトンネル本体２に対して車幅方向両側にそれぞれ配置されたフロアパネル本体３とが設けられている。車体１の車室内前部には、ダッシュパネル下部としてロアダッシュパネル４が設けられている。図２を参照すると、フロアパネル本体３の下面３ａ側には、車両前後方向に沿って、かつ車幅方向に間隔を空けて配置される一対のサイドメンバ５が設けられている。再び図１を参照すると、ロアダッシュパネル４にはフットレストを構成するフットレスト部材６が取付けられている。 The structure around the lower part of the dash panel according to the embodiment of the present invention will be described.
Referring to FIG. 1, a floor tunnel main body 2 configured to pass a drive shaft or the like (not shown) is disposed in the lower part of the vehicle interior of the vehicle body 1, and arranged on both sides in the vehicle width direction with respect to the floor tunnel main body 2. The floor panel body 3 is provided. A lower dash panel 4 is provided as a lower portion of the dash panel at the front of the vehicle interior of the vehicle body 1. Referring to FIG. 2, a pair of side members 5 are provided on the lower surface 3 a side of the floor panel body 3 along the vehicle front-rear direction and at intervals in the vehicle width direction. Referring to FIG. 1 again, the lower dash panel 4 is provided with a footrest member 6 constituting a footrest.

図１及び図２を参照して、フロアトンネル本体２及びフロアパネル本体３の詳細な構成について説明する。
図１及び図２に示すように、フロアトンネル本体２は、車幅方向に沿った断面で略ハット字形状に形成されており、車室内の車幅方向中間に配置されている。フロアトンネル本体２の車幅方向両端それぞれに、フロアパネル本体３が取付けられている。図１にて特に図示していないが、フロアトンネル本体２に対して車両進行方向右側のフロアパネル本体３に運転席が配置され、フロアトンネル本体２に対して車両進行方向左側のフロアパネル本体３に助手席が配置される構成となっている。 With reference to FIG.1 and FIG.2, the detailed structure of the floor tunnel main body 2 and the floor panel main body 3 is demonstrated.
As shown in FIGS. 1 and 2, the floor tunnel main body 2 is formed in a substantially hat shape in a cross section along the vehicle width direction, and is disposed in the middle of the vehicle width direction in the vehicle interior. A floor panel body 3 is attached to each end of the floor tunnel body 2 in the vehicle width direction. Although not particularly illustrated in FIG. 1, a driver's seat is disposed on the floor panel body 3 on the right side in the vehicle traveling direction with respect to the floor tunnel body 2, and the floor panel body 3 on the left side in the vehicle traveling direction with respect to the floor tunnel body 2. The passenger seat is arranged in the.

図２〜図４を参照して、ロアダッシュパネル４の詳細な構成について説明する。
図３及び図４に示すように、ロアダッシュパネル４の車幅方向中間の下端部には、フロアトンネルの前部を構成するトンネル前部７が設けられており、トンネル前部７は、車幅方向に沿った横断面で略コ字状に形成されている。トンネル前部７には、上端面７ａと、運転席側及び助手席側側面７ｂとが設けられている。図２及び図３に示すように、ロアダッシュパネル４の下端部には、トンネル前部７から運転席側及び助手席側にそれぞれ延びるフロア前部８が設けられており、このフロア前部８は車両前方側斜め上方に傾斜して形成されている。図３に示すように、ロアダッシュパネル４には、トンネル前部７、及びフロア前部８の前側上端から車両上方に延びる壁部９が設けられている。このようなロアダッシュパネル４のトンネル前部７がフロアトンネル本体２に隣接して配置され、ロアダッシュパネル４のフロア前部８がフロアパネル本体３に隣接して配置されている。 The detailed configuration of the lower dash panel 4 will be described with reference to FIGS.
As shown in FIGS. 3 and 4, a tunnel front portion 7 constituting a front portion of the floor tunnel is provided at a lower end portion in the vehicle width direction of the lower dash panel 4. It is formed in a substantially U shape in a cross section along the width direction. The tunnel front portion 7 is provided with an upper end surface 7a and driver seat side and passenger seat side surfaces 7b. As shown in FIGS. 2 and 3, a lower floor portion of the lower dash panel 4 is provided with a floor front portion 8 extending from the tunnel front portion 7 to the driver seat side and the passenger seat side. Is inclined obliquely upward and forward of the vehicle. As shown in FIG. 3, the lower dash panel 4 is provided with a wall portion 9 that extends upward from the front upper end of the tunnel front portion 7 and the floor front portion 8. The tunnel front portion 7 of the lower dash panel 4 is disposed adjacent to the floor tunnel body 2, and the floor front portion 8 of the lower dash panel 4 is disposed adjacent to the floor panel body 3.

図２、図４及び図５を参照して、サイドメンバ５の詳細な構成について説明する。
図２に示すように、一対のサイドメンバ５のそれぞれは、フロアトンネル本体２及びロアダッシュパネル４のトンネル前部７に対して車幅方向外側に配置されている。図４に示すように、サイドメンバ５の上端には車幅方向両端に向かってそれぞれ延びる一対のフランジ５ａが設けられている。図２に示すように、フロアパネル本体３の下面３ａに沿って配置されるサイドメンバ５の部分５ｂは、車両前後方向に延びるように形成されている。図２及び図５に示すように、ロアダッシュパネル４のフロア前部８の下面８ａに沿って配置されるサイドメンバ５の部分５ｃは、車両前方側斜め上方に傾斜して形成されている。このようなサイドメンバ５における一対のフランジ５ａが、フロアパネル本体３の下面３ａとロアダッシュパネル４のフロア前部８の下面８ａとに接合されている。 A detailed configuration of the side member 5 will be described with reference to FIGS. 2, 4, and 5.
As shown in FIG. 2, each of the pair of side members 5 is arranged on the outer side in the vehicle width direction with respect to the tunnel front portion 7 of the floor tunnel main body 2 and the lower dash panel 4. As shown in FIG. 4, a pair of flanges 5 a extending toward both ends in the vehicle width direction are provided at the upper end of the side member 5. As shown in FIG. 2, the part 5b of the side member 5 arranged along the lower surface 3a of the floor panel body 3 is formed so as to extend in the vehicle front-rear direction. As shown in FIGS. 2 and 5, the portion 5 c of the side member 5 disposed along the lower surface 8 a of the floor front portion 8 of the lower dash panel 4 is formed to be inclined obliquely upward on the vehicle front side. The pair of flanges 5 a in the side member 5 is joined to the lower surface 3 a of the floor panel body 3 and the lower surface 8 a of the floor front portion 8 of the lower dash panel 4.

図３〜図５を参照して、フットレスト部材６の詳細な構成について説明する。
図３及び図５に示すように、フットレスト部材６は、ロアダッシュパネル４のトンネル前部７、運転席側のフロア前部８、及び壁部９に跨って配置されている。フットレスト部材６の車両進行方向左側の左端部６ａは、ロアダッシュパネル４のトンネル前部７の上端面７ａに沿って形成されている。トンネル前部７から運転席側のフロア前部８に連続して配置されるフットレスト部材６の中間部６ｂが、屈曲して形成されており、その結果、ロアダッシュパネル４及びフットレスト部材６によって閉断面が形成されている。特に図４に示されるように、閉断面の左側端はロアダッシュパネル４のトンネル前部７の運転席側側面７ｂにより構成され、閉断面の右側端がフットレスト部材６の中間部６ｂの屈曲部分により構成されており、フットレスト部材４の車幅方向に沿った断面は、略クランク状に形成されている。さらに、中間部６ｂの屈曲部分は、運転席側のフロア部８のサイドメンバ５取付位置とトンネル前部７の運転席側側面７ｂの下端との間の車幅方向中間位置より運転席側のサイドメンバ５寄りの位置に配置されている。すなわち、閉断面は、トンネル前部７から、運転席側のフロア部８のサイドメンバ５取付位置とトンネル前部７の運転席側側面７ｂの下端との間の車幅方向中間位置より運転席側のサイドメンバ５寄りの位置まで、跨って配置されている。このようなフットレスト部材６の中間部６ｂが、フットレストとして構成されている。 With reference to FIGS. 3-5, the detailed structure of the footrest member 6 is demonstrated.
As shown in FIGS. 3 and 5, the footrest member 6 is disposed across the tunnel front portion 7, the floor front portion 8 on the driver seat side, and the wall portion 9 of the lower dash panel 4. A left end portion 6 a on the left side in the vehicle traveling direction of the footrest member 6 is formed along the upper end surface 7 a of the tunnel front portion 7 of the lower dash panel 4. An intermediate part 6b of the footrest member 6 arranged continuously from the tunnel front part 7 to the floor front part 8 on the driver's seat side is formed by bending, and as a result, is closed by the lower dash panel 4 and the footrest member 6. A cross section is formed. In particular, as shown in FIG. 4, the left end of the closed cross section is constituted by the driver side surface 7 b of the tunnel front portion 7 of the lower dash panel 4, and the right end of the closed cross section is a bent portion of the intermediate portion 6 b of the footrest member 6. The cross section along the vehicle width direction of the footrest member 4 is formed in a substantially crank shape. Further, the bent portion of the intermediate portion 6b is located closer to the driver seat than the intermediate position in the vehicle width direction between the side member 5 mounting position of the floor portion 8 on the driver seat side and the lower end of the driver seat side surface 7b of the tunnel front portion 7. It is arranged at a position near the side member 5. That is, the closed cross section is from the tunnel front portion 7 to the driver seat from the intermediate position in the vehicle width direction between the side member 5 mounting position of the floor portion 8 on the driver seat side and the lower end of the driver seat side surface 7b of the tunnel front portion 7. It is arranged straddling to the position near the side member 5 on the side. Such an intermediate portion 6b of the footrest member 6 is configured as a footrest.

図３を参照すると、フットレスト部材６の右端部６ｃは、ロアダッシュパネル４の運転席側のフロア前部８の上面８ｂに沿って車両前後方向に延びるように形成されている。この右端部６ｃは、ロアダッシュパネル４の運転席側のフロア前部８、及び運転席側のサイドメンバ５のフランジ部５ａに重なるように配置されている。そのため、フットレスト部材６は、トンネル前部７から、運転席側のフロア前部８のサイドメンバ５取付位置まで跨って配置されている。フットレスト部材６の前端部６ｄは、ロアダッシュパネル４の壁部９の後面９ａに沿って車幅方向に延びるように形成されている。この前端部６ｄは、ロアダッシュパネル４のトンネル前部７と運転席側フロア前部８とに跨って配置されている。フットレスト部材６の後端部６ｅは、ロアダッシュパネル４のトンネル前部７の上端面７ａ及び運転席側側面７ｂ、並びに運転席側のフロア前部８の上面８ｂに沿って、車幅方向に延びるように形成されている。   Referring to FIG. 3, the right end portion 6 c of the footrest member 6 is formed to extend in the vehicle front-rear direction along the upper surface 8 b of the floor front portion 8 on the driver seat side of the lower dash panel 4. The right end portion 6c is disposed so as to overlap the floor front portion 8 on the driver seat side of the lower dash panel 4 and the flange portion 5a of the side member 5 on the driver seat side. Therefore, the footrest member 6 is arrange | positioned ranging from the tunnel front part 7 to the side member 5 attachment position of the floor front part 8 by the side of a driver's seat. The front end portion 6 d of the footrest member 6 is formed to extend in the vehicle width direction along the rear surface 9 a of the wall portion 9 of the lower dash panel 4. The front end 6d is disposed across the tunnel front portion 7 and the driver's seat side floor front portion 8 of the lower dash panel 4. The rear end portion 6e of the footrest member 6 extends in the vehicle width direction along the upper end surface 7a and the driver seat side surface 7b of the tunnel front portion 7 of the lower dash panel 4 and the upper surface 8b of the floor front portion 8 on the driver seat side. It is formed to extend.

特に図５を参照すると、このようなフットレスト部材６の右端部６ｃは、ロアダッシュパネル４の運転席側フロア前部８と、運転席側のサイドメンバ５のフランジ５ａと重ねて配置されている。このような重なった状態で、フットレスト部材６の右端部６ｃと、ロアダッシュパネル４の運転席側フロア前部８と、運転席側のサイドメンバ５のフランジ５ａとが、互いに重ね接合されている。フットレスト部材６の前端部６ｄは、ロアダッシュパネル４の壁部９の後面９ａに、複数の接合部１０によってスポット溶接されている。複数の接合部１０は、車幅方向一列に互いに間隔を空けて配置されている。フットレスト部材６の後端部６ｅは、ロアダッシュパネル４のトンネル前部７の上端面７ａ及び運転席側側面７ｂ、並びに運転席側フロア前部８の上面８ｂに接合されている。そのため、フットレスト部材６が、ロアダッシュパネル４のトンネル前部７、運転席側のフロア前部８、及び壁部９に接合されている。   Referring particularly to FIG. 5, the right end 6c of the footrest member 6 is disposed so as to overlap the driver seat side floor front portion 8 of the lower dash panel 4 and the flange 5a of the side member 5 on the driver seat side. . In such an overlapped state, the right end portion 6c of the footrest member 6, the driver seat side floor front portion 8 of the lower dash panel 4, and the flange 5a of the side member 5 on the driver seat side are overlapped with each other. . The front end portion 6 d of the footrest member 6 is spot welded to the rear surface 9 a of the wall portion 9 of the lower dash panel 4 by a plurality of joint portions 10. The plurality of joint portions 10 are arranged at intervals in a row in the vehicle width direction. The rear end portion 6 e of the footrest member 6 is joined to the upper end surface 7 a and the driver seat side side surface 7 b of the tunnel front portion 7 of the lower dash panel 4 and the upper surface 8 b of the driver seat side floor front portion 8. Therefore, the footrest member 6 is joined to the tunnel front part 7 of the lower dash panel 4, the floor front part 8 on the driver's seat side, and the wall part 9.

以上のように本発明の実施形態によれば、フットレスト部材６が、ロアダッシュパネル４のトンネル前部７、運転席側のフロア前部８、及び壁部９に跨って配置され、トンネル前部７から運転席側のフロア前部８に連続して配置されるフットレスト部材６の中間部６ｂが屈曲して形成されている。そのため、上述のように屈曲して形成されることにより剛性が増したフットレスト部材６によって、ロアダッシュパネル４のトンネル前部７、運転席側のフロア前部８、及び壁部９に跨る範囲が補強されることとなる。このような構成によって、ロアダッシュパネル４におけるトンネル前部７及び壁部９の間の部分と、ロアダッシュパネル４におけるフロア前部８及び壁部９の間の部分とを節として振動する振動モードの影響を抑制できる。よって、ダッシュパネルの振動を効率的に抑制できる。さらに、フットレスト部材６がロアダッシュパネル４のトンネル前部７、運転席側のフロア前部８、及び壁部９に跨って配置されており、その結果、車両前方から車体に荷重が加えられた場合に、この荷重を、フットレスト部材６によって、ロアダッシュパネル４の周辺の広い範囲に効率的に分散できる。よって、車両前方から車体に加えられる荷重を効率的に吸収できる。   As described above, according to the embodiment of the present invention, the footrest member 6 is disposed across the tunnel front portion 7 of the lower dash panel 4, the floor front portion 8 on the driver's seat side, and the wall portion 9. 7, an intermediate portion 6b of the footrest member 6 arranged continuously from the floor front portion 8 on the driver's seat side is formed to be bent. Therefore, the range over the tunnel front part 7 of the lower dash panel 4, the floor front part 8 on the driver's seat side, and the wall part 9 by the footrest member 6 having increased rigidity by being bent as described above. It will be reinforced. With such a configuration, the vibration mode in which the portion between the tunnel front portion 7 and the wall portion 9 in the lower dash panel 4 and the portion between the floor front portion 8 and the wall portion 9 in the lower dash panel 4 are vibrated as nodes. The influence of can be suppressed. Therefore, the vibration of the dash panel can be efficiently suppressed. Furthermore, the footrest member 6 is disposed across the tunnel front part 7 of the lower dash panel 4, the floor front part 8 on the driver's seat side, and the wall part 9, and as a result, a load is applied to the vehicle body from the front of the vehicle. In some cases, this load can be efficiently distributed over a wide area around the lower dash panel 4 by the footrest member 6. Therefore, it is possible to efficiently absorb the load applied to the vehicle body from the front of the vehicle.

本発明の実施形態によれば、車両前方から車体に加えられるとともにサイドメンバ５を経由して伝えられる荷重が、ロアダッシュパネル４の運転席側フロア前部８に対応して傾斜したサイドメンバ５の部分５ｃに集中した場合に、フットレスト部材６によって、サイドメンバ５からロアダッシュパネル４のトンネル前部７、運転席側のフロア前部８、及び壁部９に効率的に荷重を分散できる。さらに、屈曲形成されたフットレスト部材６の中間部６ｂが剛性の高いサイドメンバ５に接近することとなり、ロアダッシュパネル４の剛性が高められることとなる。よって、ダッシュパネルの振動をさらに効率的に抑制でき、かつ車両前方から車体に加えられる荷重をさらに効率的に吸収できる。   According to the embodiment of the present invention, the load applied to the vehicle body from the front of the vehicle and transmitted through the side member 5 is inclined in accordance with the driver seat side floor front portion 8 of the lower dash panel 4. When concentrated on the portion 5c, the footrest member 6 can efficiently distribute the load from the side member 5 to the tunnel front portion 7 of the lower dash panel 4, the floor front portion 8 on the driver's seat side, and the wall portion 9. Furthermore, the intermediate part 6b of the bent footrest member 6 approaches the highly rigid side member 5, and the rigidity of the lower dash panel 4 is increased. Therefore, the vibration of the dash panel can be further effectively suppressed, and the load applied to the vehicle body from the front of the vehicle can be absorbed more efficiently.

本発明の実施形態によれば、フットレスト部材６の右端部６ｃと、ロアダッシュパネル４の運転席側のフロア前部８と、運転席側のサイドメンバ５のフランジ５ａとが、重なった状態で互いに重ね接合されている。そのため、サイドメンバ５とフットレスト部材６との接合部分によって、さらにロアダッシュパネル４の剛性が高められることとなる。よって、ダッシュパネルの振動をさらに効率的に抑制でき、かつ車両前方から車体に加えられる荷重をさらに効率的に吸収できる。   According to the embodiment of the present invention, the right end portion 6c of the footrest member 6, the floor front portion 8 on the driver seat side of the lower dash panel 4, and the flange 5a of the side member 5 on the driver seat side are overlapped. They are overlapped with each other. Therefore, the rigidity of the lower dash panel 4 is further increased by the joint portion between the side member 5 and the footrest member 6. Therefore, the vibration of the dash panel can be further effectively suppressed, and the load applied to the vehicle body from the front of the vehicle can be absorbed more efficiently.

本発明の実施形態によれば、フットレスト部材６の前端部６ｄは、ロアダッシュパネル４の壁部９の後面９ａにスポット溶接により接合されており、複数の接合部１０が設けられている。複数の接合部１０は、車幅方向一列に互いに間隔を空けて配置されている。そのため、ロアダッシュパネル４とフットレスト部材６との幅方向の剛性が高められることとなる。従って、ロアダッシュパネル４の剛性がさらに高められることとなる。よって、ダッシュパネルの振動をさらに効率的に抑制でき、かつ車両前方から車体に加えられる荷重をさらに効率的に吸収できる。   According to the embodiment of the present invention, the front end 6 d of the footrest member 6 is joined to the rear surface 9 a of the wall 9 of the lower dash panel 4 by spot welding, and a plurality of joints 10 are provided. The plurality of joint portions 10 are arranged at intervals in a row in the vehicle width direction. Therefore, the rigidity in the width direction between the lower dash panel 4 and the footrest member 6 is enhanced. Therefore, the rigidity of the lower dash panel 4 is further increased. Therefore, the vibration of the dash panel can be further effectively suppressed, and the load applied to the vehicle body from the front of the vehicle can be absorbed more efficiently.

ここまで本発明の実施形態について述べたが、本発明は既述の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各種の変形及び変更が可能である。   Although the embodiments of the present invention have been described so far, 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.

例えば、本実施形態の変形例として、運転席が左側のフロアパネル本体３に配置され、助手席が右側のフロアパネル本体３に配置されてもよい。本実施形態と同様の効果が得られる。   For example, as a modification of the present embodiment, the driver's seat may be disposed on the left floor panel body 3 and the passenger seat may be disposed on the right floor panel body 3. The same effect as this embodiment can be obtained.

４ ロアダッシュパネル（ダッシュパネル下部）
５ サイドメンバ
６ フットレスト部材
７ トンネル前部
７ｂ 側面
８ フロア前部
９ 壁部
１０ 接合部
4 Lower dash panel (lower part of dash panel)
5 Side member 6 Footrest member 7 Tunnel front part 7b Side face 8 Floor front part 9 Wall part 10 Joint part

Claims (4)

車両前後方向に沿ったフロアトンネルの前部を構成するように、ダッシュパネル下部の一部を横断面略コ字状に形成したトンネル前部と、
ダッシュパネル下部の一部を前記トンネル前部から車幅方向の運転席側に延びるように形成したフロア前部と、
前記ダッシュパネル下部の一部を、前記トンネル前部及び前記フロア前部の前側上端から上方に向かって延びるように形成した壁部と
を備えているダッシュパネル下部周辺の構造であって、
前記フロア前部が車両前方側斜め上方に傾斜して形成され、
前記トンネル前部と前記フロア前部と前記壁部とに跨ってフットレスト部材が配設され、
前記フットレスト部材の前端部が、前記壁部の後面に沿って配置され、
前記フットレスト部材の後端部が、前記フロア前部の傾斜の後端寄りにて、前記トンネル前部の上端面及び前記フロア前部の上面に沿って配置され、
前記フットレスト部材の運転席側端部が、前記フロア前部の上面に沿って配置され、
前記フットレスト部材の助手席側端部が、前記トンネル前部の上端面の助手席側端に沿って配置され、
前記フットレスト部材の前端部及び後端部間にて前記トンネル前部から前記フロア前部に連続して配置される前記フットレスト部材の部分が、フットレストを構成するように屈曲形成されて、前記フットレスト部材と前記トンネル前部と前記フロア前部とによって閉断面が形成され、
前記フットレスト部材の前端部が前記壁部に接合され、
前記フットレスト部材の後端部が前記トンネル前部及び前記フロア前部に接合され、
前記フットレスト部材の運転席側端部が前記フロア前部に接合されていることを特徴とする、ダッシュパネル下部周辺の構造。 A tunnel front part in which a part of the lower part of the dash panel is formed in a substantially U-shaped cross section so as to constitute the front part of the floor tunnel along the vehicle longitudinal direction,
A floor front part formed so that a part of the lower part of the dash panel extends from the tunnel front part to the driver seat side in the vehicle width direction,
A part of the lower part of the dash panel, comprising a wall part formed so as to extend upward from the front upper end of the tunnel front part and the floor front part,
The floor front portion is formed to be inclined obliquely upward on the vehicle front side,
A footrest member is disposed across the tunnel front part, the floor front part and the wall part,
A front end portion of the footrest member is disposed along a rear surface of the wall portion;
The rear end portion of the footrest member is disposed along the upper end surface of the tunnel front portion and the upper surface of the floor front portion near the rear end of the slope of the floor front portion,
The driver seat side end of the footrest member is disposed along the upper surface of the floor front part,
The passenger seat side end of the footrest member is disposed along the passenger seat side end of the upper end surface of the tunnel front part,
A portion of the footrest member arranged continuously from the front part of the tunnel to the front part of the floor between the front end part and the rear end part of the footrest member is bent so as to form a footrest, and the footrest member And a closed cross section is formed by the tunnel front and the floor front ,
The front end of the footrest member is joined to the wall,
The rear end of the footrest member is joined to the tunnel front and the floor front,
The structure around the lower part of the dash panel, wherein a driver seat side end of the footrest member is joined to the front of the floor . 前記ダッシュパネル下部のフロア前部の下面にサイドメンバが取付けられ、
前記閉断面が、前記トンネル前部から、該トンネル前部の運転席側側面の下端と前記フロア前部の前記サイドメンバ取付位置との間の車幅方向中間位置より前記サイドメンバ側の位置まで、跨って配置されていることを特徴とする、請求項１に記載のダッシュパネル下部周辺の構造。 Side members are attached to the lower surface of the floor front part at the bottom of the dash panel,
The closed cross section extends from the tunnel front to the position on the side member side from the intermediate position in the vehicle width direction between the lower end of the driver side surface of the tunnel front and the side member mounting position of the floor front. The structure around the lower portion of the dash panel according to claim 1, wherein the structure is disposed across the dash panel. 前記フットレスト部材が、前記トンネル前部から、前記フロア前部の前記サイドメンバ取付位置まで跨って配置されて、前記フロア前部と前記フットレスト部材の運転席側端部と前記サイドメンバとが重ねられた状態で互いに重ね接合されていることを特徴とする、請求項２に記載のダッシュパネル下部周辺の構造。 The footrest member is disposed across from the tunnel front part to the side member mounting position of the floor front part, and the floor front part , the driver seat side end part of the footrest member and the side member are overlapped. The structure around the lower part of the dash panel according to claim 2, wherein the structures are joined together in a stacked state. 前記フットレスト部材と前記壁部とが複数の接合部によって接合され、
前記複数の接合部が車幅方向一列に互いに間隔を空けて配置されていることを特徴とする、請求項１〜３のいずれか一項に記載のダッシュパネル下部周辺の構造。
The footrest member and the wall are joined by a plurality of joints,
The structure around the lower part of the dash panel according to any one of claims 1 to 3, wherein the plurality of joints are arranged in a row in the vehicle width direction so as to be spaced apart from each other.
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