JP2006123686A - Rear body construction of vehicle - Google Patents

Rear body construction of vehicle Download PDF

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Publication number
JP2006123686A
JP2006123686A JP2004313913A JP2004313913A JP2006123686A JP 2006123686 A JP2006123686 A JP 2006123686A JP 2004313913 A JP2004313913 A JP 2004313913A JP 2004313913 A JP2004313913 A JP 2004313913A JP 2006123686 A JP2006123686 A JP 2006123686A
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rear end
vehicle
gate
cross
panel
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JP2004313913A
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Japanese (ja)
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Shuji Muraoka
修二 村岡
Hiroyuki Ando
裕之 安藤
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Mazda Motor Corp
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Mazda Motor Corp
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Priority to JP2004313913A priority Critical patent/JP2006123686A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To prevent deformation or breakage of a gate lower end part due to a load input from a rear pillar at the time of rolling of a vehicle body. <P>SOLUTION: A cross-section of a central part 21 of the gate lower end part 15 is formed roughly rectangular and cross-sections of both end parts 16 of the gate lower end part 15 are formed roughly in an inverse triangle one side of which extends in a direction roughly along inclination of a rear pillar 9 on the rear part chassis frame and body construction 1 of a vehicle furnished with the rear pillar 9 constituting left and right both side parts of a rear gate opening part 8 formed on a vehicle body rear end part and inclined backward toward below, a rear end panel 6 extended in the vehicle widthwise direction and provided on the lower side of this rear gate opening part 8 and a rear end cross member 13 forming the closed cross-section shape gate lower end part 15 with this rear end panel 6. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、バックドアを備えた車両の後部車体構造に関する。   The present invention relates to a rear body structure of a vehicle provided with a back door.

従来より、バックドアを備えた自動車の車体後端部を形成するリヤゲート開口部は、このリヤゲート開口部の左右両側部を構成するリヤピラーと、リヤゲート開口部の下側に車幅方向に延設されたリヤエンドパネルと、このリヤエンドパネルの上端前面に接合するリヤエンドクロスメンバとで主要骨格部を構成している(例えば、特許文献1参照)。このリヤエンドクロスメンバがリヤエンドパネルとともに上記リヤピラーの両下端部に接続する閉断面形状のゲート下端部を形成することで、リヤゲート開口部の強度剛性を確保している。このゲート下端部の断面は通常剛性を高めるために略矩形状となっている。
特開平10−244963号公報
Conventionally, a rear gate opening that forms the rear end of a vehicle body with a back door has been extended in the vehicle width direction below the rear pillar that constitutes the left and right sides of the rear gate opening and the rear gate opening. The main skeleton is composed of the rear end panel and the rear end cross member joined to the upper front surface of the rear end panel (see, for example, Patent Document 1). The rear end cross member, together with the rear end panel, forms a gate lower end portion having a closed cross section connected to both lower end portions of the rear pillar, thereby ensuring strength and rigidity of the rear gate opening. The cross section of the lower end of the gate is generally rectangular in order to increase the rigidity.
JP-A-10-244963

しかしながら、リヤピラーが下方に向かって後方に傾斜する車体デザインを有する車体構造の場合には、車体ロール時にリヤピラーから入力される荷重はゲート下端部に上方から斜め後方にかかる。そのため、略矩形状の断面を構成する壁部のうち上側の上壁部には車体後方に向かう力がかかり、下側の下壁部には車体前方に向かう反力がかかることになり、上壁部が下壁部に対して後方へすべるようにゲート下端部に変形が生じ、場合によってはゲート下端部が破損する恐れがある。このことから、ゲート下端部、特にリヤピラーに接合する両端部は、板厚を厚くしたり、別部材により幾重もの補強を施す必要があり、重量およびコストが増加するという問題があった。   However, in the case of a vehicle body structure having a vehicle body design in which the rear pillar is inclined rearward downward, the load input from the rear pillar during the vehicle body roll is applied obliquely rearward from above to the lower end of the gate. Therefore, the upper upper wall portion of the wall portion constituting the substantially rectangular cross section is applied with a force toward the rear of the vehicle body, and the lower lower wall portion is applied with a reaction force toward the front of the vehicle body. The lower end of the gate is deformed so that the wall slides backward with respect to the lower wall, and in some cases, the lower end of the gate may be damaged. For this reason, it is necessary to increase the plate thickness at the lower end portion of the gate, in particular, both ends joined to the rear pillar, or to apply a number of reinforcements by separate members, resulting in an increase in weight and cost.

本発明は、かかる点に鑑みてなされたものであり、その目的とするところは、ゲート下端部の構造に工夫を加えることにより、ゲート下端部の強度を高めて、その破損を防止することにある。   The present invention has been made in view of the above points, and the object of the present invention is to increase the strength of the lower end of the gate and to prevent the damage by adding a device to the structure of the lower end of the gate. is there.

上記の目的を達成するために、本発明は、ゲート下端部の中央部の断面を略矩形状とし、両端部の断面は略逆三角形状とした。   In order to achieve the above object, according to the present invention, the cross section of the central portion of the lower end portion of the gate has a substantially rectangular shape, and the cross sections of both end portions have a substantially inverted triangular shape.

具体的には、第1の発明は、車体後端部に形成されるリヤゲート開口部の左右両側部を構成し、下方に向かって後方に傾斜したリヤピラーと、上記リヤゲート開口部の下側に車幅方向に延設するリヤエンドパネルと、このリヤエンドパネルの上端前面に接合し、リヤエンドパネルとともに上記リヤピラーの両下端部に接続する閉断面形状のゲート下端部を形成するリヤエンドクロスメンバとを備えた自動車の後部車体構造を対象とする。   Specifically, the first invention constitutes the left and right sides of the rear gate opening formed at the rear end of the vehicle body, and the rear pillars inclined rearward downward and the vehicle below the rear gate opening. A vehicle having a rear end panel extending in the width direction and a rear end cross member joined to the front surface of the upper end of the rear end panel and forming a gate lower end portion having a closed cross-sectional shape connected to the lower end portions of the rear pillar together with the rear end panel. Targeting the rear body structure.

そして、上記ゲート下端部の中央部の断面を略矩形状に形成するとともに、両端部の断面を、一辺が上記リヤピラーの傾斜に略沿う方向に延びる略逆三角形状に形成する構成とする。   The cross section of the central portion of the lower end of the gate is formed in a substantially rectangular shape, and the cross section of both ends is formed in a substantially inverted triangular shape with one side extending in a direction substantially along the inclination of the rear pillar.

上記の構成によると、ゲート下端部の両端部の略逆三角形状の断面を構成する壁部のうち前側の前壁部がリヤピラーの傾斜と略沿う方向に形成されており、車体ロール時にリヤピラーから両端部の上面にかかる荷重の入力方向と、両端部の前壁部の傾きとが略等しいため、リヤピラーから入力される荷重がこの前壁部で支持され、ゲート下端部の変形が抑止される。   According to the above configuration, the front wall portion on the front side among the wall portions constituting the substantially inverted triangular cross section at both ends of the lower end portion of the gate is formed in a direction substantially along the inclination of the rear pillar. Since the input direction of the load applied to the upper surfaces of both end portions and the inclination of the front wall portions of both end portions are substantially equal, the load input from the rear pillar is supported by the front wall portions, and deformation of the lower end portion of the gate is suppressed. .

第2の発明は、上記リヤエンドクロスメンバには、リヤエンドパネルに接合するためのフランジ部が上下に形成され、このフランジ部とリヤエンドパネルとの接合部には、シール部材が設けられていて、上記ゲート下端部の両端部下側の接合部が、このリヤエンドパネルの下側に後端が接合されたフロアパネル上面に隣接する構成とする。   According to a second aspect of the present invention, the rear end cross member is formed with a flange portion for joining to the rear end panel, and a seal member is provided at the joint portion between the flange portion and the rear end panel. The joint portion below the both ends of the lower end of the gate is configured to be adjacent to the upper surface of the floor panel having the rear end joined to the lower side of the rear end panel.

第3の発明は、上記ゲート下端部の両端部下方のリヤエンドパネルに車体前後方向に延びるリヤサイドフレームの後端を接合する構成とする。   In a third aspect of the present invention, the rear end of the rear side frame extending in the longitudinal direction of the vehicle body is joined to the rear end panel below both ends of the lower end of the gate.

上記の構成によると、車両衝突時にリヤエンドパネルのゲート下端部の両端部付近にかかる荷重は、このゲート下端部の両端部の下方におけるリヤエンドパネルに接合されたリヤサイドフレームにも伝えられる。   According to the above configuration, the load applied to the vicinity of both ends of the lower end portion of the gate of the rear end panel at the time of the vehicle collision is also transmitted to the rear side frame joined to the rear end panel below both ends of the lower end portion of the gate.

第4の発明は、上記リヤエンドクロスメンバは上記ゲート下端部の両端部に対応する外側部材と、この両外側部材と接合し、この両外側部材同士をつなぐ内側部材とからなる。そして、この内側部材は、上記外側部材との接合部よりも車幅方向内側において、この外側部材との間で連続面を形成する外表面部と、この外側部材との接合部よりも車幅方向外側で、この外側部材の内部に延出し、上記リヤエンドパネルと外側部材との間で形成される閉断面を分割する延出部を形成する構成とする。   According to a fourth aspect of the invention, the rear end cross member includes an outer member corresponding to both ends of the lower end portion of the gate, and an inner member that joins the outer members and connects the outer members. The inner member has an outer surface portion that forms a continuous surface with the outer member, on the inner side in the vehicle width direction than the joint portion with the outer member, and the vehicle width with respect to the joint portion with the outer member. An extending portion is formed on the outside in the direction so as to extend into the outer member and divide a closed cross section formed between the rear end panel and the outer member.

上記の構成によると、ゲート下端部の両端部は、リヤエンドクロスメンバの外側部材の内部に内側部材から延出した延出部が挿入されて、外側部材とリヤエンドパネルとで形成される閉断面と、この延出部とリヤエンドパネルとで形成される閉断面との二重の閉断面構造となる。そのため、ゲート下端部の両端部の剛性が補強される。   According to the above configuration, the both ends of the lower end of the gate are closed cross sections formed by the outer member and the rear end panel by inserting the extending portion extending from the inner member into the outer member of the rear end cross member. Thus, a double closed cross-sectional structure is formed with a closed cross-section formed by the extending portion and the rear end panel. Therefore, the rigidity of both ends of the lower end of the gate is reinforced.

上記第1の発明によれば、ゲート下端部の中央部の断面を略矩形状として断面積の減少を抑えながら、両端部の断面を略逆三角形状に形成して、車体ロール時にリヤピラーから入力される荷重をリヤピラーの傾斜に略沿う方向に延びる前壁部で支持させるようにした。このため、ゲート下端部全体の剛性低下を抑えながら、ゲート下端部の強度を高めてその破損を防止することができる。   According to the first aspect of the present invention, the cross section of the central portion of the lower end of the gate is made substantially rectangular, and the cross section of both ends is formed into a substantially inverted triangular shape while suppressing the reduction of the cross sectional area. Load is supported by a front wall portion extending in a direction substantially along the inclination of the rear pillar. For this reason, the strength of the lower end of the gate can be increased and its breakage can be prevented while suppressing the decrease in rigidity of the entire lower end of the gate.

上記第2の発明によれば、ゲート下端部の両端部をフロアパネルに隣接させてリヤゲート開口部を低位置にとりながらも、ゲート下端部の両端部の断面を略逆三角形状で前壁部が傾斜するようにしたため、両端部下側のシール部材の目視が容易である。したがって、利用者の荷物積上げ時の快適性を保ちながらも、シール部材の確認を容易に行うことができ、作業効率を維持することが出来る。   According to the second aspect of the invention, the both ends of the lower end of the gate are adjacent to the floor panel and the rear gate opening is in the low position, but the cross section of the both ends of the lower end of the gate is substantially inverted triangular and the front wall is Since it is made to incline, visual observation of the seal member under both ends is easy. Therefore, it is possible to easily check the seal member while maintaining the comfort of the user when stacking the luggage, and the work efficiency can be maintained.

上記第3の発明によれば、ゲート下端部の両端部下方のリヤエンドパネルにリヤサイドフレームを接合させたことにより、ゲート下端部の両端部の断面積減少に伴う剛性低下を補強することができ、ゲート下端部の強度を高め、その破損を防止することができる。   According to the third aspect of the invention, by joining the rear side frame to the rear end panel below the both ends of the lower end of the gate, it is possible to reinforce the rigidity reduction accompanying the reduction in the cross-sectional area of both ends of the lower end of the gate, The strength of the lower end of the gate can be increased and the breakage can be prevented.

上記第4の発明によれば、リヤエンドクロスメンバの内側部材から延出した延出部を外側部材の内部に挿入して、ゲート下端部の両端部を二重の閉断面構造とし、また、外側部材の外表面と内側部材の外表面部の外表面とを略連続させたことにより、応力の伝達が滑らかになるとともに、ゲート下端部の両端部の剛性を補強しながら、ゲート下端部の強度を高めてその破損を防止することができる。   According to the fourth aspect of the present invention, the extended portion extending from the inner member of the rear end cross member is inserted into the outer member, the both ends of the lower end portion of the gate have a double closed sectional structure, and the outer portion By making the outer surface of the member and the outer surface of the outer surface of the inner member substantially continuous, the stress transfer becomes smooth and the strength of the lower end of the gate is enhanced while reinforcing the rigidity of both ends of the lower end of the gate. Can be increased to prevent the breakage.

以下、本発明の実施形態を図面に基づいて詳細に説明する。   Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

《発明の実施形態》
図1は、本発明の実施形態に係る車両の後部車体構造1を示す。この後部車体構造1はバックドア(図示せず)を備えた自動車に関するものであり、図1はバックドアを取外した状態の後部車体構造1を示す。
<< Embodiment of the Invention >>
FIG. 1 shows a rear body structure 1 of a vehicle according to an embodiment of the present invention. The rear vehicle body structure 1 relates to an automobile having a back door (not shown), and FIG. 1 shows the rear vehicle body structure 1 with the back door removed.

上記後部車体構造1はフロアパネル2を有している。このフロアパネル2は、後端部中央にタイヤパン3が下に凹んだ状態で形成されている。このフロアパネル2の両側部にはホイルハウスインナ4がそれぞれ膨出形成されている。このフロアパネル2の両端部と各ホイルハウスインナ4の側縁部とには、車体側面を構成するサイドインナパネル5の下端がそれぞれ接合されている。   The rear body structure 1 has a floor panel 2. The floor panel 2 is formed in a state where a tire pan 3 is recessed downward in the center of the rear end portion. Foil house inners 4 are bulged and formed on both sides of the floor panel 2. The lower end of the side inner panel 5 constituting the side surface of the vehicle body is joined to both ends of the floor panel 2 and the side edge of each wheel house inner 4.

上記フロアパネル2の後端にはリヤエンドパネル6の前面が接合されている。このリヤエンドパネル6は、車体後端部の上記バックドアを取外した部分にできるリヤゲート開口部8の下側に、車幅方向に延設されている。   The front end of the rear end panel 6 is joined to the rear end of the floor panel 2. The rear end panel 6 extends in the vehicle width direction below the rear gate opening 8 formed at the rear end of the vehicle body where the back door is removed.

図2〜図4に示すように、上記リヤゲート開口部8の左右両側部を構成するリヤピラー9は、リヤピラーアウタ9aとリヤピラーインナ9bとリヤサイドパネル9cとで構成されており、全体が下方に向けて後方に傾斜した形状となっている。   As shown in FIGS. 2 to 4, the rear pillar 9 constituting the left and right side portions of the rear gate opening 8 is composed of a rear pillar outer 9a, a rear pillar inner 9b, and a rear side panel 9c. The shape is inclined backward.

すなわち、上記各リヤピラーアウタ9aは、上記リヤゲート開口部8の上下方向全域に亘って、各リヤピラー9の外板を形成している。この各リヤピラーアウタ9aの下端部は上記リヤエンドパネル6の両側上端にそれぞれ接合している。   That is, each rear pillar outer 9 a forms an outer plate of each rear pillar 9 over the entire vertical direction of the rear gate opening 8. The lower ends of the rear pillar outers 9a are joined to the upper ends on both sides of the rear end panel 6, respectively.

そして、この各リヤピラーアウタ9aの上側部とリヤピラーインナ9bの上側後端とで、上側閉断面部10を形成している。すなわち、この各リヤピラーインナ9bは車体の内側面を構成し、その後端は、各リヤピラーアウタ9aの車幅方向外側端部およびリヤエンドパネル6の両端に連続して接合されている。この各リヤピラーインナ9bの上側後端には、車体方向内側に向かって曲折した曲面部9d(図2および図4に示す)が形成され、この曲面部9dと上記各リヤピラーアウタ9aとが接合して、上記上側閉断面部10を形成している。この各上側閉断面部10に、車体内側からリヤサイドパネル9cの上側部がそれぞれ接合している。この各リヤサイドパネル9cは、上記リヤゲート開口部8の上下方向全域に亘って、各リヤピラー9の内板を形成している。この各リヤサイドパネル9cの下側部と上記各リヤピラーアウタ9aの下側部とで下側閉断面部11を形成し、この各下側閉断面部11の上端は上記各上側閉断面部10の下端に略連続するように接合されている。   The upper closed section 10 is formed by the upper part of each rear pillar outer 9a and the upper rear end of the rear pillar inner 9b. That is, each rear pillar inner 9b constitutes the inner side surface of the vehicle body, and its rear end is continuously joined to the outer end in the vehicle width direction of each rear pillar outer 9a and to both ends of the rear end panel 6. A curved surface portion 9d (shown in FIGS. 2 and 4) that is bent inward in the vehicle body direction is formed at the upper rear end of each rear pillar inner 9b. The curved surface portion 9d and each rear pillar outer 9a are joined to each other. Thus, the upper closed cross section 10 is formed. The upper portion of the rear side panel 9c is joined to each upper closed section 10 from the inside of the vehicle body. Each rear side panel 9c forms an inner plate of each rear pillar 9 over the entire region of the rear gate opening 8 in the vertical direction. A lower closed cross-sectional portion 11 is formed by a lower side portion of each rear side panel 9c and a lower side portion of each rear pillar outer 9a. The upper end of each lower closed cross-sectional portion 11 is the upper end of each upper closed cross-sectional portion 10. It is joined to the lower end so as to be substantially continuous.

図1に示すように、上記リヤゲート開口部8の下部を構成するゲート下端部15は、その両端を構成する両端部16と、この両端部16をつなぐ中央部21とで構成されている。   As shown in FIG. 1, the gate lower end portion 15 constituting the lower portion of the rear gate opening 8 is composed of both end portions 16 constituting both ends thereof and a central portion 21 connecting the both end portions 16.

図5に示すように、上記リヤエンドパネル6の上端には、後方に突出した凸条の上端部6aが形成されている。この上端部6aの車幅方向両側の前面には、リヤエンドクロスメンバ13の外側部材14がそれぞれ接合されている。この外側部材14は、リヤエンドパネル6の上端部6aとともに、略逆三角形状の閉断面を有するゲート下端部15の両端部16を形成している。この閉断面を構成する壁部のうち前側の前壁部16aは、上記リヤピラー9の傾斜と略沿う方向に形成され、下端に下方に向けて下側フランジ部17が折り曲げられるようにして成形されている。上記閉断面を構成する壁部のうち上側を構成する上壁部16bの後端には、略上方に向けて上側フランジ部18が折り曲げられるようにして成形されている。これらの下側フランジ部17および上側フランジ部18により、上記リヤエンドクロスメンバ13の外側部材14が、リヤエンドパネル6にフランジ接合されている。   As shown in FIG. 5, the upper end of the rear end panel 6 is formed with an upper end 6a of a protruding ridge protruding rearward. Outer members 14 of the rear end cross member 13 are joined to the front surfaces of the upper end portion 6a on both sides in the vehicle width direction. The outer member 14 forms both end portions 16 of the gate lower end portion 15 having a substantially inverted triangular closed section together with the upper end portion 6a of the rear end panel 6. Of the wall portions constituting the closed cross section, the front wall portion 16a on the front side is formed in a direction substantially along the inclination of the rear pillar 9 and is formed so that the lower flange portion 17 is bent downward at the lower end. ing. The upper flange portion 18 is formed at the rear end of the upper wall portion 16b constituting the upper side of the wall portion constituting the closed section so as to be bent substantially upward. With the lower flange portion 17 and the upper flange portion 18, the outer member 14 of the rear end cross member 13 is flange joined to the rear end panel 6.

上記ゲート下端部15の両端部16の下側フランジ部17とリヤエンドパネル6との接合部19は、上記フロアパネル2のタイヤパン3の設けられていない部分に隣接する位置に形成されている。上記リヤゲート開口部8の下部の位置は荷物の搬入出のしやすさを考慮して、低位置に構成されている。   A joint portion 19 between the lower flange portion 17 of the both end portions 16 of the gate lower end portion 15 and the rear end panel 6 is formed at a position adjacent to a portion of the floor panel 2 where the tire pan 3 is not provided. The lower position of the rear gate opening 8 is configured at a low position in consideration of the ease of loading and unloading of luggage.

上記ゲート下端部15の両端部16の車幅方向外側の端部は、上記各リヤピラー9の下側閉断面部11の下端にそれぞれ連続して接合されている。   The ends of the both ends 16 of the gate lower end 15 on the outer side in the vehicle width direction are continuously joined to the lower ends of the lower closed cross-sections 11 of the rear pillars 9 respectively.

図6に示すように、上記リヤエンドパネル6の車幅方向中央側の上端部6aは、両側側よりも後方に突出し、この上端部6aの前面における、上記フロアパネル2のタイヤパン3の上方位置には、後方に向かって開口した断面略コ字状のリヤエンドクロスメンバ13の内側部材20の外表面部20aが接合されている。この内側部材20の外表面部20aは、リヤエンドパネル6の上端部6aとともに略矩形状の閉断面を有するゲート下端部15の中央部21を形成している。このゲート下端部15の中央部21の閉断面を構成する壁部のうち上側の上壁部21aの後端には略上方に向けて、下側の下壁部21bの後端には下方に向けてフランジ部22がそれぞれ折り曲げられるように成形されている。これらのフランジ部22によって、このリヤエンドクロスメンバ13の内側部材20の外表面部20aは、上記リヤエンドパネル6にフランジ接合されている。   As shown in FIG. 6, the upper end 6a of the rear end panel 6 at the center in the vehicle width direction protrudes rearward from both sides, and the upper position of the tire pan 3 of the floor panel 2 on the front surface of the upper end 6a. The outer surface portion 20a of the inner member 20 of the rear end cross member 13 having a substantially U-shaped cross section that opens toward the rear is joined. The outer surface portion 20 a of the inner member 20 forms a central portion 21 of the gate lower end portion 15 having a substantially rectangular closed section together with the upper end portion 6 a of the rear end panel 6. Of the wall portions constituting the closed section of the central portion 21 of the gate lower end portion 15, the rear end of the upper upper wall portion 21a is directed substantially upward, and the rear end of the lower lower wall portion 21b is directed downward. The flange portions 22 are formed so as to be bent toward each other. With these flange portions 22, the outer surface portion 20 a of the inner member 20 of the rear end cross member 13 is flange-bonded to the rear end panel 6.

図7に示すように、上記リヤエンドクロスメンバ13の内側部材20の外表面部20aは、リヤエンドクロスメンバ13の外側部材14の外表面との間で連続面を形成し、この内側部材20と外側部材14との各接合部から車幅方向外側に延出部23が延出している。この各延出部23は、リヤエンドクロスメンバ13の外側部材14の内面に沿うように延出されている。図5にも示すように、この各延出部23は上記リヤエンドパネル6の上端部6aの車幅方向両側の前面と接合し、略逆三角形状の閉断面を形成している。この閉断面を構成する壁部のうち前側の前壁部23aの下端には下方に向けて下側フランジ部24(図5にのみ示す)が折り曲げられるように成形され、上側の上壁部23bの後端には略上方に向けて上側フランジ部25が折り曲げられるように成形されている。これらの下側フランジ部24および上側フランジ部25により、この各延出部23はリヤエンドパネル6にフランジ接合されて、閉断面を構成し、外側部材14とリヤエンドパネル6とで形成される閉断面との二重の閉断面構造が形成されている。   As shown in FIG. 7, the outer surface portion 20 a of the inner member 20 of the rear end cross member 13 forms a continuous surface with the outer surface of the outer member 14 of the rear end cross member 13. An extending portion 23 extends outward from each joint portion with the member 14 in the vehicle width direction. Each extending portion 23 extends along the inner surface of the outer member 14 of the rear end cross member 13. As shown in FIG. 5, the extending portions 23 are joined to the front surfaces of the upper end portion 6 a of the rear end panel 6 on both sides in the vehicle width direction to form a substantially inverted triangular closed section. A lower flange portion 24 (shown only in FIG. 5) is formed to be bent downward at the lower end of the front wall portion 23a on the front side of the wall portion constituting the closed section, and the upper wall portion 23b on the upper side is formed. At the rear end, the upper flange portion 25 is bent substantially upward. By means of the lower flange portion 24 and the upper flange portion 25, each extending portion 23 is flange-joined to the rear end panel 6 to form a closed cross section, and the closed cross section formed by the outer member 14 and the rear end panel 6 is formed. A double closed cross-sectional structure is formed.

図1に破線で示すように、上記リヤエンドパネル6の前面における、上記ゲート下端部15の両端部16の下方位置に、車体前後方向に延びるリヤサイドフレーム27の後端が、フロアパネル2下方に接合されている。このことで、ゲート下端部15の両端部16付近の剛性が補強されている。   As shown by a broken line in FIG. 1, the rear end of the rear side frame 27 extending in the longitudinal direction of the vehicle body is joined to the lower side of the floor panel 2 at a position below the both ends 16 of the gate lower end 15 on the front surface of the rear end panel 6. Has been. Thus, the rigidity in the vicinity of both end portions 16 of the gate lower end portion 15 is reinforced.

なお、車体製造工程において、各フランジ接合の接合部には、各部材のスポット溶接による接合の後に、防水や防塵のためのシール部材28が設けられる。このとき、図5にも示すように、上記ゲート下端部15の両端部16の下側フランジ部17に設けられた接合部19のシール部材28は、ゲート下端部15の両端部16の前壁部16aが下方に向かって後方に傾斜した形状となっているため、車体製造工程におけるシール部材28確認時に、覗き込むことなく斜め上方から目視することで、その状態が確認される。   In the vehicle body manufacturing process, a seal member 28 for waterproofing and dustproofing is provided at the joint portion of each flange joint after the joint of each member by spot welding. At this time, as shown in FIG. 5, the sealing member 28 of the joint portion 19 provided on the lower flange portion 17 of the both end portions 16 of the gate lower end portion 15 is connected to the front wall of the both end portions 16 of the gate lower end portion 15. Since the portion 16a has a shape that is inclined backward toward the lower side, when checking the seal member 28 in the vehicle body manufacturing process, the state can be confirmed by looking from above obliquely without looking into it.

−運転動作−
次に、本実施形態に係る車両の後部車体構造の作用について説明する。
-Driving action-
Next, the operation of the rear body structure of the vehicle according to this embodiment will be described.

走行中の車両が旋回したり、横風を受けた時などに車体がロールすると、車体には、車体の前後軸の回転方向にモーメントがかかる。この場合に、リヤピラー9に車体のロールに対抗する荷重がかかる。このリヤピラー9にかかる荷重が、リヤピラー9の下端部に接合されたゲート下端部15の両端部16に伝わる。この際、ゲート下端部15の両端部16に伝わる荷重の入力方向は、リヤピラー9の傾斜に沿う方向となっている。そして、ゲート下端部15の両端部16はこのリヤピラー9の傾斜に略沿う方向に延びる前壁部16aを有しているため、この前壁部16aでリヤピラー9から伝達される荷重を支持し、その荷重を車幅方向内側へとさらに伝達させる。そして、この荷重は、リヤエンドパネル6のゲート下端部15の両端部16の下方位置に接合されたリヤサイドフレーム27にも伝達される。   If the vehicle rolls when the traveling vehicle turns or receives a crosswind, a moment is applied to the vehicle body in the rotational direction of the longitudinal axis of the vehicle body. In this case, a load against the roll of the vehicle body is applied to the rear pillar 9. The load applied to the rear pillar 9 is transmitted to both end portions 16 of the gate lower end portion 15 joined to the lower end portion of the rear pillar 9. At this time, the input direction of the load transmitted to both end portions 16 of the gate lower end portion 15 is a direction along the inclination of the rear pillar 9. Since both end portions 16 of the gate lower end portion 15 have a front wall portion 16a extending in a direction substantially along the inclination of the rear pillar 9, the front wall portion 16a supports a load transmitted from the rear pillar 9, The load is further transmitted inward in the vehicle width direction. This load is also transmitted to the rear side frame 27 joined to the lower position of both end portions 16 of the gate lower end portion 15 of the rear end panel 6.

−実施形態の効果−
したがって、本実施形態の車両の後部車体構造においては、上記のように、ゲート下端部15の中央部21の断面が略矩形状であり、両端部16の断面が略逆三角形状となっているため、ゲート下端部15全体の剛性の低下を抑えながら、車体ロール時にリヤピラー9から入力される荷重によるゲート下端部15の変形や破損を防止することができる。
-Effect of the embodiment-
Therefore, in the rear body structure of the vehicle of the present embodiment, as described above, the cross section of the central portion 21 of the gate lower end portion 15 is substantially rectangular, and the cross sections of both end portions 16 are substantially inverted triangular. Therefore, it is possible to prevent deformation and breakage of the gate lower end portion 15 due to a load input from the rear pillar 9 during rolling of the vehicle body while suppressing a decrease in rigidity of the entire gate lower end portion 15.

また、本実施形態においては、ゲート下端部15の両端部16をフロアパネル2に隣接させて、リヤゲート開口部8を低位置にとり、ゲート下端部15の両端部16の前壁部16aを傾斜するようにしたため、利用者の荷物積上げ時の快適性を保ちながらも、両端部16の下側フランジ部17におけるシール部材28の確認を容易に行うことができる。   In the present embodiment, both end portions 16 of the gate lower end portion 15 are adjacent to the floor panel 2, the rear gate opening 8 is positioned at a low position, and the front wall portions 16 a of the both end portions 16 of the gate lower end portion 15 are inclined. As a result, it is possible to easily check the sealing member 28 in the lower flange portion 17 of the both end portions 16 while maintaining the comfort of the user when loading the load.

また、本実施形態においては、ゲート下端部15の両端部16の下方位置のリヤエンドパネル6にリヤサイドフレーム27が接合されているため、ゲート下端部15の両端部16の断面を略逆三角形状としたことによる剛性低下を補強することができる。   In the present embodiment, since the rear side frame 27 is joined to the rear end panel 6 below the both ends 16 of the gate lower end 15, the both ends 16 of the gate lower end 15 have a substantially inverted triangular cross section. It is possible to reinforce the decrease in rigidity due to the above.

さらに、ゲート下端部15の両端部16を二重の閉断面構造としたことにより、ゲート下端部15の両端部16の剛性を補強することができる。   Furthermore, the rigidity of the both end portions 16 of the gate lower end portion 15 can be reinforced by making the both end portions 16 of the gate lower end portion 15 have a double closed cross-sectional structure.

−実施形態の変形例−
なお、本実施形態では、ゲート下端部15の両端部16の断面を略逆三角形状としたが、リヤピラー9の傾斜に略沿う方向に延びる辺を有する断面形状であればよい。例えば、台形状の断面としてもよい。
-Modification of the embodiment-
In the present embodiment, the cross section of the both end portions 16 of the gate lower end portion 15 has a substantially inverted triangular shape, but it may have a cross sectional shape having sides extending in a direction substantially along the inclination of the rear pillar 9. For example, it may have a trapezoidal cross section.

また、本実施形態では、リヤゲート下端部15の両端部16がフロアパネル2に隣接した構成としたが、必ずしも隣接した構成としなくてもよい。   Further, in the present embodiment, the both end portions 16 of the rear gate lower end portion 15 are adjacent to the floor panel 2, but it is not necessarily required to be adjacent.

また、本実施形態では、各部材の接合はフランジ接合であるとしたが、他の接合方法としてもよい。   In the present embodiment, each member is joined by flange joining, but other joining methods may be used.

また、本実施形態では、リヤエンドクロスメンバ13を外側部材14と内側部材20の三部材からなるものとし、リヤゲート下端部15の両端部16は二重の閉断面構造としたが、リヤエンドクロスメンバ13は一つの部材からなるものとし、リヤゲート下端部15の両端部は、一つの閉断面で構成されるものとしてもよい。   In the present embodiment, the rear end cross member 13 is composed of three members, that is, the outer member 14 and the inner member 20, and both end portions 16 of the rear gate lower end portion 15 have a double closed cross-sectional structure. May be composed of one member, and both end portions of the rear gate lower end portion 15 may be configured by one closed cross section.

また、本実施形態では、リヤエンドパネル6の上端には後方に凸条の上端部6aが形成されたものとしたが、このような上端部6aを形成しなくてもよく、このリヤエンドパネル6とリヤエンドクロスメンバ13の外側部材14とで略逆三角形状の閉断面を形成し、このリヤエンドパネル6とリヤエンドクロスメンバ13の内側部材20とで略矩形状の閉断面を形成してもよい。  Further, in the present embodiment, the upper end portion 6a of the ridge is formed on the rear end of the rear end panel 6, but the upper end portion 6a may not be formed. The outer member 14 of the rear end cross member 13 may form a substantially inverted triangular closed section, and the rear end panel 6 and the inner member 20 of the rear end cross member 13 may form a substantially rectangular closed section.

以上説明したように、本発明は、バックドアを備え、下方に向かって後方に傾斜したリヤピラーを備えた車両の後部車体構造について有用である。   As described above, the present invention is useful for a rear body structure of a vehicle that includes a back pillar that includes a back door and is inclined rearwardly downward.

本発明の実施形態に係る車両の後部車体構造を車両内部から見た斜視図である。It is the perspective view which looked at the rear part body structure of the vehicle concerning the embodiment of the present invention from the inside of the vehicle. 車両の後部車体構造を外側から見た斜視図である。It is the perspective view which looked at the rear part vehicle body structure of the vehicle from the outside. 車両の後部車体構造を内側から見た側面図である。It is the side view which looked at the rear body structure of a vehicle from the inside. リヤピラーの下側閉断面部を示す、図2のIV−IV線断面図である。FIG. 4 is a cross-sectional view taken along the line IV-IV in FIG. ゲート下端部の中央部を示す側方断面図である。It is side sectional drawing which shows the center part of a gate lower end part. ゲート下端部の両端部を示す側方断面図である。It is side sectional drawing which shows the both ends of a gate lower end part. 車両の後部車体構造を内部から見た拡大斜視図である。It is the expansion perspective view which looked at the rear body structure of a vehicle from the inside.

符号の説明Explanation of symbols

1 車両の後部車体構造
2 フロアパネル
6 リヤエンドパネル
8 リヤゲート開口部
9 リヤピラー
13 リヤエンドクロスメンバ
14 外側部材
15 ゲート下端部
16 両端部
17 下側フランジ部
18 上側フランジ部
20 内側部材
20a外表面部
21 中央部
22 フランジ部
23 延出部
27 リヤサイドフレーム
28 シール部材
DESCRIPTION OF SYMBOLS 1 Vehicle rear body structure 2 Floor panel 6 Rear end panel 8 Rear gate opening 9 Rear pillar 13 Rear end cross member 14 Outer member 15 Gate lower end portion 16 Both ends 17 Lower flange portion 18 Upper flange portion 20 Inner member 20a outer surface portion 21 Center Part 22 flange part 23 extension part 27 rear side frame 28 sealing member

Claims (4)

車体後端部に形成されるリヤゲート開口部の左右両側部を構成し、下方に向かって後方に傾斜したリヤピラーと、
上記リヤゲート開口部の下側に車幅方向に延設されたリヤエンドパネルと、
上記リヤエンドパネルの上端前面に接合され、リヤエンドパネルとともに上記リヤピラー両下端部に接続する閉断面形状のゲート下端部を形成するリヤエンドクロスメンバとを備えた車両の後部車体構造であって、
上記ゲート下端部の中央部の断面は略矩形状に形成されるとともに、両端部の断面は一辺が上記リヤピラーの傾斜に略沿う方向に延びる略逆三角形状に形成されていることを特徴とする車両の後部車体構造。
A rear pillar that forms the left and right sides of the rear gate opening formed at the rear end of the vehicle body and is inclined rearward toward the bottom,
A rear end panel extending in the vehicle width direction below the rear gate opening,
A rear vehicle body structure comprising a rear end cross member that is joined to the upper end front surface of the rear end panel and forms a lower end portion of a gate having a closed cross-sectional shape connected to the lower end portions of the rear pillar together with the rear end panel,
The cross section of the central portion of the lower end of the gate is formed in a substantially rectangular shape, and the cross section of both end portions is formed in a substantially inverted triangular shape extending in a direction substantially along the inclination of the rear pillar. Rear body structure of the vehicle.
請求項1の車両の後部車体構造において、
上記リヤエンドクロスメンバには、上記リヤエンドパネルに接合するためのフランジ部が上下に形成され、該フランジ部とリヤエンドパネルとの接合部にはシール部材が設けられており、上記ゲート下端部の両端部下側の接合部が、上記リヤエンドパネルの下側に後端が接合されたフロアパネル上面に隣接していることを特徴とする車両の後部車体構造。
The vehicle rear body structure according to claim 1,
The rear end cross member is formed with a flange portion for joining to the rear end panel, and a seal member is provided at the joint portion between the flange portion and the rear end panel. A vehicle body structure for a rear portion of a vehicle, characterized in that a side joint portion is adjacent to an upper surface of a floor panel having a rear end joined to the lower side of the rear end panel.
請求項1又は請求項2の車両の後部車体構造において、
上記ゲート下端部の両端部下方のリヤエンドパネルには、車体前後方向に延びるリヤサイドフレームの後端が接合されていることを特徴とする車両の後部車体構造。
In the rear body structure of the vehicle according to claim 1 or claim 2,
A rear body structure of a vehicle, wherein rear end frames extending in a longitudinal direction of the vehicle body are joined to rear end panels below both ends of the lower end of the gate.
請求項1〜3のいずれか一つの車両の後部車体構造において、
上記リヤエンドクロスメンバは上記ゲート下端部の両端部に対応する外側部材と、該両外側部材と接合され、該両外側部材同士をつなぐ内側部材とからなり、該内側部材は、上記外側部材との接合部よりも車幅方向内側において、該外側部材との間で連続面を形成する外表面部と、上記外側部材との接合部よりも車幅方向外側で、該外側部材の内部に延出され、上記リヤエンドパネルと外側部材との間で形成される閉断面を分割する延出部とが形成されていることを特徴とする車両の後部車体構造。
In the rear body structure of the vehicle according to any one of claims 1 to 3,
The rear end cross member includes an outer member corresponding to both ends of the lower end portion of the gate, and an inner member joined to the outer members and connecting the outer members, and the inner member is connected to the outer member. An outer surface portion that forms a continuous surface with the outer member on the inner side in the vehicle width direction from the joint portion, and extends inside the outer member at an outer side in the vehicle width direction than the joint portion with the outer member. And a vehicle body structure for a rear part of the vehicle, wherein an extension part for dividing a closed cross section formed between the rear end panel and the outer member is formed.
JP2004313913A 2004-10-28 2004-10-28 Rear body construction of vehicle Pending JP2006123686A (en)

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Publication Number Publication Date
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Family Applications (1)

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Country Status (1)

Country Link
JP (1) JP2006123686A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014162272A (en) * 2013-02-22 2014-09-08 Suzuki Motor Corp Vehicle body rear part structure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014162272A (en) * 2013-02-22 2014-09-08 Suzuki Motor Corp Vehicle body rear part structure

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