JP2006315558A - Rear bodywork of hatchback type vehicle - Google Patents

Rear bodywork of hatchback type vehicle Download PDF

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JP2006315558A
JP2006315558A JP2005140649A JP2005140649A JP2006315558A JP 2006315558 A JP2006315558 A JP 2006315558A JP 2005140649 A JP2005140649 A JP 2005140649A JP 2005140649 A JP2005140649 A JP 2005140649A JP 2006315558 A JP2006315558 A JP 2006315558A
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tailgate
wheel house
gusset
pillar
tail gate
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JP4335841B2 (en
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Yoshinori Fukushi
芳記 福士
Mikio Shibaoka
幹男 柴岡
Kenji Okura
健司 大倉
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Honda Motor Co Ltd
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Honda Motor Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a rear bodywork of a hatchback type vehicle capable of establishing a high body stiffness and body strength using a comparatively simple constitution even in a case the tail gate inclines large. <P>SOLUTION: Each wheel house 15 and a tail gate pillar 21 are coupled together by a gusset 31. The gusset 31 is furnished with a vertical wall 32 installed approximately upright for coupling the inner side face of the wheel house 15 with the inside surface of the tail gate pillar 21 and a reinforcing wall 33 extended from the front end of the vertical wall 32 toward a rear inner panel 12. The vertical wall 32 of the gusset 31 has a bottom which is spot welded to the top of a floor cross member 16 together with the side wall of the wheel house 15, and a top which is fastened to a weld nut 35 of the tail gate pillar 21 by two bolts 34. The reinforcing wall 33 of the gusset 31 has a flange 33a whose lower part is spot welded to the oversurface of the wheel house 15. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、ハッチバック型車両における車体剛性や車体強度の向上等を図る技術に関する。   The present invention relates to a technique for improving vehicle body rigidity and vehicle body strength in a hatchback type vehicle.

ハッチバック型車両(以下、ハッチバック車と略称する)では、大きなテールゲート開口を有するため、車体剛性や車体強度が低下して操縦性や乗り心地等が悪化しやすくなる。また、空力性能等の向上を図るべくテールゲートの傾斜を大きくしたハッチバック車では、リヤホイールハウスの上方で車体が開放されることになり、ダンパから入力する荷重によって車体がねじれ変形や曲げ変形を起こしやすくなる。   A hatchback type vehicle (hereinafter abbreviated as a hatchback vehicle) has a large tailgate opening, so that the rigidity and strength of the vehicle body are lowered, and the maneuverability and the ride comfort are likely to deteriorate. In addition, in hatchback cars with a large tailgate slope to improve aerodynamic performance, etc., the car body is opened above the rear wheel house, and the car body is twisted and bent by the load input from the damper. It is easy to wake up.

テールゲートの傾斜が小さい(テールゲートが略垂直に配置された)ハッチバック車における車体剛性の向上技術としては、テールゲートに作用するスペアタイヤ等の荷重を車体に分散すべく、ホイールハウスとテールゲートピラーとを水平に配置されたリーンフォースメントを介して連結したものが提案されている(特許文献1参照)。   As a technology to improve vehicle body rigidity in a hatchback vehicle with a small tailgate inclination (tailgate arranged almost vertically), the wheelhouse and tailgate are distributed to distribute the load of spare tires acting on the tailgate to the vehicle body. The thing which connected the pillar via the reinforcement arranged horizontally is proposed (refer to patent documents 1).

また、テールゲートの傾斜が大きいハッチバック車における車体剛性の向上技術としては、高いねじり剛性が要求される制動時に、電磁プランジャを用いてテールゲートをテールゲートピラーに強固に拘束するものが提案されている(特許文献2参照)。
特開2001−328562号公報(段落0030、図4) 特開平5−680号公報(段落0031、図1)
In addition, as a technology for improving vehicle body rigidity in a hatchback vehicle with a large tailgate inclination, a technique that strongly restrains the tailgate to the tailgate pillar using an electromagnetic plunger during braking that requires high torsional rigidity has been proposed. (See Patent Document 2).
JP 2001-328562 A (paragraph 0030, FIG. 4) JP 5-680 (paragraph 0031, FIG. 1)

特許文献1の技術には、リーンフォースメントを水平に配置することによる次のような問題があった。すなわち、テールゲートの傾斜が大きいハッチバック車では、ホイールハウスに対するテールゲートピラーの位置が高くなるため、リーンフォースメントをテールゲートピラーの下部にしか連結できず、テールゲート開口の剛性向上等が殆ど実現できない。また、水平に配置されたリーンフォースメントを介しては、ダンパからの上下方向の入力がテールゲートピラーに伝達され難いため、ホイールハウスが車体のねじれ変形や曲げ変形を効果的に防ぐことができなかった。   The technique of Patent Document 1 has the following problems due to the horizontal arrangement of lean reinforcement. In other words, in a hatchback car with a large tailgate slope, the position of the tailgate pillar relative to the wheelhouse is high, so the lean reinforcement can only be connected to the bottom of the tailgate pillar, and the rigidity of the tailgate opening is almost improved. Can not. In addition, since the vertical input from the damper is difficult to be transmitted to the tailgate pillar via the horizontally disposed reinforcement, the wheel house can effectively prevent the vehicle body from being twisted or bent. There wasn't.

一方、特許文献2の技術では、電磁プランジャや制御装置等を設けることにより、部品点数の増大やコストの上昇が避けられないだけでなく、電気的な故障によって車体剛性が低下してしまう等の問題があった。また、特許文献2の技術では、テールゲートを拘束することによってテールゲート開口の剛性は向上できるが、テールゲート開口が大きいこと、すなわち、テールゲートピラーが長いことに起因する車体強度の低下等を解消することができなかった。   On the other hand, in the technique of Patent Document 2, by providing an electromagnetic plunger, a control device, etc., not only an increase in the number of parts and an increase in cost is unavoidable, but also the rigidity of the vehicle body decreases due to an electrical failure. There was a problem. In the technique of Patent Document 2, the rigidity of the tailgate opening can be improved by restraining the tailgate. However, the tailgate opening is large, that is, the vehicle body strength is reduced due to the long tailgate pillar. Could not be resolved.

本発明は、このような背景に鑑みなされたもので、テールゲートの傾斜が大きい場合においても、比較的簡単な構成をもって高い車体剛性や車体強度を実現できるハッチバック型車両の後部車体構造を提供することを目的とする。   The present invention has been made in view of such a background, and provides a rear body structure of a hatchback type vehicle that can achieve high body rigidity and body strength with a relatively simple configuration even when the inclination of the tailgate is large. For the purpose.

請求項1の発明は、テールゲート開口を形成するテールゲートピラーが左右のリヤホイールハウスの上方に位置したハッチバック型車両の後部車体構造であって、前記テールゲートピラーと前記リヤホイールハウスとが略直立に配置された補強部材によって連結されたことを特徴とする。   The invention according to claim 1 is a rear vehicle body structure of a hatchback type vehicle in which tailgate pillars that form tailgate openings are positioned above the left and right rear wheel houses, and the tailgate pillars and the rear wheel houses are approximately It is connected by the reinforcement member arrange | positioned upright.

また、請求項2は、請求項1に記載のハッチバック型車両の後部車体構造において、前記左右のリヤホイールハウスがフロアクロスメンバによって互いに連結されたことを特徴とする。   According to a second aspect of the present invention, in the rear body structure of the hatchback type vehicle according to the first aspect, the left and right rear wheel houses are connected to each other by a floor cross member.

本発明の後部車体構造によれば、テールゲートピラーの中間部とホイールハウスとが連結されるため、テールゲートピラーが大きく傾斜していても、ホイールハウス周辺の強度や剛性を高くすることができる。また、左右のリヤホイールハウスをフロアクロスメンバによって連結したものでは、車体全体の強度や剛性が向上し、ねじり変形や曲げ変形が効果的に抑制される。   According to the rear vehicle body structure of the present invention, since the middle part of the tailgate pillar and the wheel house are connected, even if the tailgate pillar is largely inclined, the strength and rigidity around the wheel house can be increased. . Further, when the left and right rear wheel houses are connected by the floor cross member, the strength and rigidity of the entire vehicle body are improved, and torsional deformation and bending deformation are effectively suppressed.

以下、図面を参照して、本発明を適用したハッチバック車の車体構造の一実施形態を詳細に説明する。
図1は実施形態に係るハッチバック車を示す斜視図であり、図2は図1中のII部拡大縦断面図であり、図3は図1中の拡大III矢視図である。
Hereinafter, an embodiment of a vehicle body structure of a hatchback vehicle to which the present invention is applied will be described in detail with reference to the drawings.
1 is a perspective view showing a hatchback vehicle according to the embodiment, FIG. 2 is an enlarged vertical sectional view of a portion II in FIG. 1, and FIG. 3 is an enlarged view taken in the direction of arrow III in FIG.

≪実施形態の構成≫
図1に示すように、本実施形態のハッチバック車1は、ボディ2の後部に大きく傾斜したテールゲート3を備えた4ドアセダン型乗用車である。ボディ2は、リヤパネル4や、ルーフパネル5、リヤフロアパネル6、左右のアウタパネル7,8等をスポット溶接によって組み立ててなるモノコック構造となっている。テールゲート3は、ルーフパネル5の後端に設けられたヒンジ(図示せず)を支点として上方に開放し、開放状態でサポートストラット9により支持される。なお、図1は、車体構造の説明を容易にするため、荷室のカーペットやトリム類を外した状態で示している。
<< Configuration of Embodiment >>
As shown in FIG. 1, a hatchback vehicle 1 according to this embodiment is a four-door sedan type passenger vehicle including a tailgate 3 that is greatly inclined at a rear portion of a body 2. The body 2 has a monocoque structure in which the rear panel 4, the roof panel 5, the rear floor panel 6, the left and right outer panels 7, 8 and the like are assembled by spot welding. The tailgate 3 opens upward with a hinge (not shown) provided at the rear end of the roof panel 5 as a fulcrum, and is supported by the support struts 9 in the open state. Note that FIG. 1 shows a state in which the carpet and trims of the luggage compartment are removed in order to facilitate the description of the vehicle body structure.

リヤシート11の後方には、リヤフロアパネル6やリヤインナパネル12等によって荷室13が画成されている。図2に示すように、荷室13の側方には、フロアフレームインナ14aとフロアフレームアウタ14bとをスポット溶接してなる矩形断面形状のフロアフレーム14が配置されている。フロアフレーム14には、その内側面にリヤフロアパネル6がスポット溶接され、その外側面にホイールハウスインナ15aがスポット溶接されている。ホイールハウスインナ15aは、リヤインナパネル12を間に挟むかたちでホイールハウスアウタ15bにスポット溶接されてホイールハウス15を形成する。   A luggage compartment 13 is defined behind the rear seat 11 by a rear floor panel 6, a rear inner panel 12, and the like. As shown in FIG. 2, a floor frame 14 having a rectangular cross section formed by spot welding a floor frame inner 14 a and a floor frame outer 14 b is disposed on the side of the luggage compartment 13. A rear floor panel 6 is spot welded to the inner side surface of the floor frame 14, and a wheel house inner 15a is spot welded to the outer side surface thereof. The wheel house inner 15a is spot welded to the wheel house outer 15b with the rear inner panel 12 interposed therebetween to form the wheel house 15.

フロアフレーム14およびリヤフロアパネル6には、それぞれの車外側壁面との間に閉断面を形成するフロアクロスメンバ16が接合されている。フロアクロスメンバ16も、略コ字断面形状を呈する鋼板プレス成型品であり、接合フランジ16aをもって左右のフロアフレーム14(図2,図3には左側のみ示す)とリヤフロアパネル6とにスポット溶接されている。なお、フロアクロスメンバ16は、その上端がホイールハウス15の側壁の上部にまで延設されている。   The floor frame 14 and the rear floor panel 6 are joined to a floor cross member 16 that forms a closed cross section with each vehicle outer wall surface. The floor cross member 16 is also a steel plate press-formed product having a substantially U-shaped cross-section, and is spot-welded to the left and right floor frames 14 (shown only on the left side in FIGS. 2 and 3) and the rear floor panel 6 with a joining flange 16a. ing. The upper end of the floor cross member 16 extends to the upper part of the side wall of the wheel house 15.

ホイールハウスインナ15aの上壁には、上下一対のダンパマウント(マウンティングラバー)18,19を介して、ダンパ20の上端が弾性支持されている。ダンパ20は、その下端が図示しないサスペンションアームに連結されており、ホイールの上下動に伴うサスペンションアームの振動を減衰する。   The upper end of the damper 20 is elastically supported on the upper wall of the wheel house inner 15a via a pair of upper and lower damper mounts (mounting rubbers) 18, 19. The lower end of the damper 20 is connected to a suspension arm (not shown), and attenuates the vibration of the suspension arm accompanying the vertical movement of the wheel.

一方、ボディ2のテールゲート開口は、リヤパネル4、ルーフパネル5、左右のテールゲートピラー21,22により形成されている。テールゲートピラー21は、ピラーインナ21aとピラーアウタ21bとをスポット溶接してなる矩形断面形状を呈している。図2,図3に示すように、テールゲートピラー21は、ホイールハウス15の直上に位置しており、リヤインナパネル12の上端内側面にスポット溶接されている。   On the other hand, the tail gate opening of the body 2 is formed by a rear panel 4, a roof panel 5, and left and right tail gate pillars 21 and 22. The tailgate pillar 21 has a rectangular cross section formed by spot welding the pillar inner 21a and the pillar outer 21b. As shown in FIGS. 2 and 3, the tailgate pillar 21 is located immediately above the wheel house 15 and is spot-welded to the upper inner surface of the rear inner panel 12.

図2,図3に示すように、ホイールハウス15とテールゲートピラー21,22(図2,図3では左側のみを示す)とは、補強部材であるガセット31によって連結されている。ガセット31は、鋼板を素材とするプレス成型品であり、略直立に配置されてホイールハウス15の内側面とテールゲートピラー21の内側面とを連結する縦壁32と、縦壁32の前端からリヤインナパネル12側に延設された補強壁33とを有している。補強壁33の辺縁部からは、前方に向けてフランジ33aが延設されている。   As shown in FIGS. 2 and 3, the wheel house 15 and the tailgate pillars 21 and 22 (only the left side is shown in FIGS. 2 and 3) are connected by a gusset 31 that is a reinforcing member. The gusset 31 is a press-molded product made of a steel plate. The gusset 31 is arranged substantially upright to connect the inner surface of the wheel house 15 and the inner surface of the tailgate pillar 21, and from the front end of the vertical wall 32. And a reinforcing wall 33 extending to the rear inner panel 12 side. A flange 33a extends from the edge of the reinforcing wall 33 toward the front.

ガセット31の縦壁32は、その下端がホイールハウス15の側壁とともにフロアクロスメンバ16の上端にスポット溶接されているが、その上端は2本のボルト34によってテールゲートピラー21のウエルドナット35に締結されている。これは、テールゲートピラー21が閉断面となっており、その内部にスポット溶接ガンを挿入することができないためである。また、ガセット31の補強壁33は、フランジ33aの下方部分がホイールハウス15の上面にスポット溶接されている。   The vertical wall 32 of the gusset 31 is spot welded to the upper end of the floor cross member 16 together with the side wall of the wheel house 15. The upper end of the vertical wall 32 is fastened to the weld nut 35 of the tailgate pillar 21 by two bolts 34. Has been. This is because the tailgate pillar 21 has a closed cross section, and a spot welding gun cannot be inserted therein. Further, the reinforcing wall 33 of the gusset 31 is spot-welded to the upper surface of the wheel house 15 at the lower portion of the flange 33a.

≪実施形態の作用≫
自動車の悪路走行時において、ホイールハウス15のダンパ装着部には、大きな上下方向荷重が作用する。また、自動車の旋回走行時においては、ロールに伴うねじり荷重や曲げ荷重がボディ2に作用する。ところが、本実施形態の場合、テールゲートピラー21とホイールハウス15とが直立に配置されたガセット31により強固に連結されているため、ダンパからの上下方向の入力がテールゲートピラー21に円滑に伝達され、ホイールハウス15の撓み変形が起こり難くなる。更に、フロアクロスメンバ16がガセット31の下部に連結されているため、ボディ2全体の剛性が非常に高くなり、旋回走行時等におけるボディ2のねじり変形や曲げ変形が起こり難くなり、高い操縦安定性や乗り心地が得られるとともに騒音や振動の抑制も実現される。
<< Operation of Embodiment >>
When the automobile is traveling on a rough road, a large vertical load acts on the damper mounting portion of the wheel house 15. Further, the torsional load and the bending load accompanying the roll act on the body 2 when the automobile is turning. However, in the case of this embodiment, the tailgate pillar 21 and the wheel house 15 are firmly connected by the gusset 31 arranged upright, so that the vertical input from the damper is smoothly transmitted to the tailgate pillar 21. Thus, bending deformation of the wheel house 15 hardly occurs. Further, since the floor cross member 16 is connected to the lower part of the gusset 31, the rigidity of the entire body 2 becomes very high, and the torsional and bending deformation of the body 2 is difficult to occur at the time of turning and the like, and high maneuvering stability. Performance and ride comfort as well as noise and vibration suppression.

以上で具体的実施形態の説明を終えるが、本発明は上記実施形態に限定されることなく幅広く変形実施することができる。例えば、上記実施形態は本発明を4ドアのハッチバック車に適用したものであるが、2ドアのハッチバック車に適用してもよい。また、ガセットの具体的形状やその取付形態等についても、本発明の趣旨を逸脱しない範囲で適宜変更可能である。   Although the description of the specific embodiment is finished as described above, the present invention is not limited to the above embodiment and can be widely modified. For example, although the above embodiment is an application of the present invention to a 4-door hatchback vehicle, the present invention may be applied to a 2-door hatchback vehicle. Further, the specific shape of the gusset, its mounting form, and the like can be changed as appropriate without departing from the spirit of the present invention.

実施形態に係る自動車を示す斜視図である。1 is a perspective view showing an automobile according to an embodiment. 図1中のII部を示す拡大縦断面図である。FIG. 2 is an enlarged longitudinal sectional view showing a II part in FIG. 1. 図1中のIII矢視図である。It is a III arrow directional view in FIG.

符号の説明Explanation of symbols

2 ボディ
15 ホイールハウス
16 フロアクロスメンバ
21 テールゲートピラー
31 ガセット(補強部材)
32 縦壁
33 補強壁
2 Body 15 Wheelhouse 16 Floor cross member 21 Tailgate pillar 31 Gusset (reinforcement member)
32 Vertical wall 33 Reinforcement wall

Claims (2)

テールゲート開口を形成するテールゲートピラーが左右のリヤホイールハウスの上方に位置したハッチバック型車両の後部車体構造であって、
前記テールゲートピラーと前記リヤホイールハウスとが略直立に配置された補強部材によって連結されたことを特徴とするハッチバック型車両の後部車体構造。
A rear body structure of a hatchback type vehicle in which tailgate pillars forming a tailgate opening are located above the left and right rear wheel houses,
A rear vehicle body structure of a hatchback type vehicle, wherein the tailgate pillar and the rear wheel house are connected by a reinforcing member arranged substantially upright.
前記左右のリヤホイールハウスがフロアクロスメンバによって互いに連結されたことを特徴とする、請求項1に記載のハッチバック型車両の後部車体構造。   The rear body structure of a hatchback type vehicle according to claim 1, wherein the left and right rear wheel houses are connected to each other by a floor cross member.
JP2005140649A 2005-05-13 2005-05-13 Rear body structure of hatchback type vehicle Expired - Fee Related JP4335841B2 (en)

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JP2009067229A (en) * 2007-09-13 2009-04-02 Mazda Motor Corp Vehicle body rear part structure
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