JP7077703B2 - Rear bottom structure of the car body - Google Patents

Rear bottom structure of the car body Download PDF

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JP7077703B2
JP7077703B2 JP2018056452A JP2018056452A JP7077703B2 JP 7077703 B2 JP7077703 B2 JP 7077703B2 JP 2018056452 A JP2018056452 A JP 2018056452A JP 2018056452 A JP2018056452 A JP 2018056452A JP 7077703 B2 JP7077703 B2 JP 7077703B2
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under cover
width direction
silencer
vehicle width
vehicle
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JP2019166987A (en
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周平 西田
秀功 久我
敏男 坂本
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Mazda Motor Corp
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
    • Y02T10/88—Optimized components or subsystems, e.g. lighting, actively controlled glasses

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Description

この発明は、車体後部下面構造に関し、詳しくは、車体荷室のフロア下部に懸下されたサイレンサと、上記サイレンサの後端底部より高い位置に配置されたリヤバンパフェースと、上記サイレンサの後端底部と上記リヤバンパフェース下端部との間を下方から覆うリヤアンダカバーと、を備えた車体後部下面構造に関する。 The present invention relates to a vehicle body rear lower surface structure, and more specifically, a silencer suspended from the lower floor of the vehicle body luggage compartment, a rear bumper face arranged at a position higher than the rear end bottom of the silencer, and a rear end bottom of the silencer. The present invention relates to a rear lower surface structure of a vehicle body provided with a rear under cover that covers between the rear bumper face and the lower end portion of the rear bumper face from below.

従来、床下走行風の整流を図る目的で、車体荷室のフロア下部に懸下されたサイレンサと、該サイレンサの後端底部よりも高位置に配置されたリヤバンパフェース下端部との間を、リヤアンダカバーで下方から覆うように成した車体後部下面構造が知られている。 Conventionally, for the purpose of rectifying the underfloor running wind, the rear is between the silencer suspended at the lower part of the floor of the vehicle body luggage compartment and the lower end of the rear bumper face arranged at a position higher than the rear end bottom of the silencer. It is known that the lower surface structure of the rear part of the vehicle body is covered with an undercover from below.

この場合、リヤアンダカバーを、車両前後方向に前低後高状となる後ろ上がりに１０度前後の傾斜状に形成すると、フロア下の床下走行風の流れを車体後端部に向けて上方へ流し、車体後流の乱れを少なくするという空力グランドラインによる効果が得られることも知られている。 In this case, if the rear undercover is formed with an inclination of about 10 degrees in the rearward rise, which is a front-low rear-high shape in the front-rear direction of the vehicle, the flow of the underfloor running wind under the floor is directed upward toward the rear end of the vehicle body. It is also known that the effect of the aerodynamic ground line, which is to reduce the turbulence of the wake of the vehicle body, can be obtained.

ここで、上述のリヤアンダカバーは、サイレンサ底面部に対して、その上下方向の高さ関係を維持し、かつ、車両走行中に振動しないように寸法精度よく位置決めし、強固に支持することが床下走行風の乱れを抑制する観点から望まれている。 Here, the above-mentioned rear under cover can be firmly supported by maintaining the height relationship in the vertical direction with respect to the bottom surface of the silencer, and positioning the rear under cover with high dimensional accuracy so as not to vibrate while the vehicle is running. It is desired from the viewpoint of suppressing the turbulence of the underfloor running wind.

ところで、特許文献１には、トーションビーム式リヤサスペンションと、後部車体下面に設けられた整流用のリヤアンダカバーとを備えた構造が開示されている。
しかしながら、該特許文献１には、リヤアンダカバーの具体的な位置決め構造および支持構造については、開示されていない。 By the way, Patent Document 1 discloses a structure including a torsion beam type rear suspension and a rear under cover for rectification provided on the lower surface of the rear vehicle body.
However, Patent Document 1 does not disclose a specific positioning structure and support structure of the rear undercover.

特開２０１７－３９３５４号公報Japanese Unexamined Patent Publication No. 2017-39354

そこで、この発明は、リヤアンダカバーの上下方向の高精度を確保することができると共に、当該リヤアンダカバーの充分な支持剛性を確保することができ、さらには、リヤアンダカバーの組付け時に、仮預けによりその組付け性の向上を図ることができる車体後部下面構造の提供を目的とする。 Therefore, according to the present invention, it is possible to secure high accuracy in the vertical direction of the rear undercover, secure sufficient support rigidity of the rear undercover, and further, when assembling the rear undercover, when assembling the rear undercover, It is an object of the present invention to provide a rear lower surface structure of a vehicle body that can be temporarily deposited to improve its assembling property.

この発明による車体後部下面構造は、車体荷室のフロア下部に懸下されたサイレンサと、上記サイレンサの後端底部より高い位置に配置されたリヤバンパフェースと、上記サイレンサの後端底部と上記リヤバンパフェース下端部との間を下方から覆うリヤアンダカバーと、を備えた車体後部下面構造であって、上記リヤアンダカバーはその後端部が上記リヤバンパフェース下端部に固定され、その前端部が荷室フロア下面部左右に両脚部が締結された凹字型形状の取付けステーにおける車幅方向メンバに下方から固定され、上記リヤアンダカバーの前端部には、前方側に延出して上記車幅方向メンバの上面に当接して仮預けされる仮預け部が形成され、車両底面視で上記取付けステーの車幅方向メンバ下面が前後方向に凹凸する凹凸形状に形成されており、上記リヤアンダカバーの前片部は、上記凹凸形状に合致する凹凸形状部を備えたものである。 The vehicle body rear lower surface structure according to the present invention includes a silencer suspended from the lower part of the floor of the vehicle body luggage compartment, a rear bumper face arranged at a position higher than the rear end bottom of the silencer, and a rear end bottom of the silencer and the rear bumper face. It has a rear underside structure of the vehicle body provided with a rear undercover that covers the space between the lower end and the lower end of the rear undercover. The rear end of the rear undercover is fixed to the lower end of the rear bumper face, and the front end thereof is the luggage compartment floor. It is fixed from below to the vehicle width direction member in the concave -shaped mounting stay in which both legs are fastened to the left and right of the lower surface portion, and extends forward to the front end portion of the rear undercover to cover the vehicle width direction member. A temporary depositing portion is formed that abuts on the upper surface and is temporarily deposited , and the lower surface of the vehicle width direction member of the mounting stay is formed in an uneven shape that is uneven in the front-rear direction when viewed from the bottom of the vehicle. The portion is provided with a concave-convex shape portion that matches the uneven shape .

上記構成によれば、リヤアンダカバーの後端部をリヤバンパフェース下端部に固定し、リヤアンダカバーの前端部を剛性部材である取付けステーの車幅方向メンバに固定するので、当該リヤアンダカバーの上下方向の取付け高さを高精度に確保することができると共に、その充分な支持剛性を確保することができる。 According to the above configuration, the rear end portion of the rear under cover is fixed to the lower end portion of the rear bumper face, and the front end portion of the rear under cover is fixed to the vehicle width direction member of the mounting stay which is a rigid member. It is possible to secure the mounting height in the vertical direction with high accuracy and to secure its sufficient support rigidity.

また、リヤアンダカバーの組付け時には、上記仮預け部を取付けステーにおける車幅方向メンバの上面に当接して仮預けするので、その組付け性の向上を図ることができる。 Further, when assembling the rear under cover, the temporary depositing portion is brought into contact with the upper surface of the vehicle width direction member of the mounting stay for temporary depositing, so that the assembling property can be improved.

しかも、車両底面視で上記取付けステーの車幅方向メンバ下面が前後方向に凹凸する凹凸形状に形成されており、上記リヤアンダカバーの前片部は、上記凹凸形状に合致する凹凸形状部を備えたものである。 Moreover, the lower surface of the member of the mounting stay in the vehicle width direction is formed into an uneven shape that is uneven in the front-rear direction when viewed from the bottom of the vehicle, and the front piece portion of the rear under cover is provided with an uneven shape portion that matches the uneven shape. It is a thing.

これにより、リヤアンダカバー前片部の凹凸形状部が、取付けステーにおける車幅方向メンバの凹凸形状に合致して、面一合わせが達成できると共に、当該凹凸形状部によりリヤアンダカバーの剛性向上を図ることができる。 As a result, the uneven shape of the front piece of the rear under cover matches the uneven shape of the member in the vehicle width direction in the mounting stay, and surface alignment can be achieved, and the rigidity of the rear under cover is improved by the uneven shape. Can be planned.

この発明による車体後部下面構造は、また、車体荷室のフロア下部に懸下されたサイレンサと、上記サイレンサの後端底部より高い位置に配置されたリヤバンパフェースと、上記サイレンサの後端底部と上記リヤバンパフェース下端部との間を下方から覆うリヤアンダカバーと、を備えた車体後部下面構造であって、上記リヤアンダカバーはその後端部が上記リヤバンパフェース下端部に固定され、上記リヤアンダカバーの前端部が荷室フロア下面部左右に両脚部が締結された凹字型形状の取付けステーにおいて車幅方向に延設する車幅方向メンバに下方から固定され、上記リヤアンダカバーは、上方に延びる縦壁と該縦壁の上端から前方に延出する水平部とを有し、該水平部の下面が上記車幅方向メンバの上面に当接して仮預けされる仮預け部が形成されることを特徴とする。The vehicle body rear lower surface structure according to the present invention also includes a silencer suspended from the lower part of the floor of the vehicle body luggage compartment, a rear bumper face arranged at a position higher than the rear end bottom of the silencer, and a rear end bottom of the silencer and the above. It is a vehicle body rear lower surface structure including a rear under cover that covers the lower end of the rear bumper face from below, and the rear end of the rear under cover is fixed to the lower end of the rear bumper face, and the rear under cover is provided with the rear under cover. The front end is fixed from below to a member in the vehicle width direction extending in the vehicle width direction in a concave-shaped mounting stay in which both legs are fastened to the left and right of the lower surface of the luggage compartment floor, and the rear undercover extends upward. A temporary depositing portion is formed which has a vertical wall and a horizontal portion extending forward from the upper end of the vertical wall, and the lower surface of the horizontal portion abuts on the upper surface of the vehicle width direction member to be temporarily deposited. It is characterized by.

この発明によれば、リヤアンダカバーの上下方向の高精度を確保することができると共に、当該リヤアンダカバーの充分な支持剛性を確保することができ、さらには、リヤアンダカバーの組付け時に、仮預けによりその組付け性の向上を図ることができる効果がある。 According to the present invention, high accuracy in the vertical direction of the rear undercover can be ensured, sufficient support rigidity of the rear undercover can be ensured, and further, when the rear undercover is assembled, the rear undercover can be assembled. Temporary deposit has the effect of improving the ease of assembly.

本発明の車体後部下面構造を備えた車両の側面図Side view of the vehicle provided with the rear lower surface structure of the vehicle body of the present invention. 図１の要部拡大底面図Enlarged bottom view of the main part of FIG. 車体後部下面構造を下方から見た状態で示す斜視図A perspective view showing the rear lower surface structure of the vehicle body as viewed from below. 図２のＡ－Ａ線矢視断面図FIG. 2 is a cross-sectional view taken along the line AA. 図２のＢ－Ｂ線に沿う要部の矢視断面図Cross-sectional view of the main part along the line BB in FIG. 図２のＣ－Ｃ線に沿う要部の矢視断面図Cross-sectional view of the main part along the CC line in FIG. 取付けステーを斜め上方から見た状態で示す斜視図Perspective view showing the mounting stay as viewed from diagonally above 取付けステーを斜め下方から見た状態で示す斜視図Perspective view showing the mounting stay as viewed from diagonally below リヤアンダカバーを斜め上方から見た状態で示す斜視図Perspective view showing the rear under cover as viewed from diagonally above リヤアンダカバーを斜め下方から見た状態で示す斜視図A perspective view showing the rear under cover as viewed from diagonally below. 図６の要部拡大図Enlarged view of the main part of FIG.

リヤアンダカバーの上下方向の高精度を確保することができると共に、当該リヤアンダカバーの充分な支持剛性を確保することができ、さらには、リヤアンダカバーの組付け時に、仮預けによりその組付け性の向上を図るという目的を、車体荷室のフロア下部に懸下されたサイレンサと、上記サイレンサの後端底部より高い位置に配置されたリヤバンパフェースと、上記サイレンサの後端底部と上記リヤバンパフェース下端部との間を下方から覆うリヤアンダカバーと、を備えた車体後部下面構造であって、上記リヤアンダカバーはその後端部が上記リヤバンパフェース下端部に固定され、その前端部が荷室フロア下面部左右に両脚部が締結された凹字型形状の取付けステーにおける車幅方向メンバに下方から固定され、上記リヤアンダカバーの前端部には、前方側に延出して上記車幅方向メンバの上面に当接して仮預けされる仮預け部が形成され、車両底面視で上記取付けステーの車幅方向メンバ下面が前後方向に凹凸する凹凸形状に形成されており、上記リヤアンダカバーの前片部は、上記凹凸形状に合致する凹凸形状部を備えるという構成にて実現した。 It is possible to secure high accuracy in the vertical direction of the rear undercover, secure sufficient support rigidity of the rear undercover, and further, when assembling the rear undercover, temporarily deposit it. For the purpose of improving the performance, the silencer suspended from the lower part of the floor of the vehicle body luggage compartment, the rear bumper face arranged at a position higher than the rear end bottom of the silencer, the rear end bottom of the silencer and the rear bumper face. It has a rear lower surface structure of the vehicle body provided with a rear under cover that covers the space between the lower end portion from below. The rear end portion of the rear under cover is fixed to the lower end portion of the rear bumper face, and the front end portion thereof is the luggage compartment floor. The concave -shaped mounting stay with both legs fastened to the left and right of the lower surface is fixed from below to the member in the vehicle width direction, and the front end of the rear under cover extends forward to the member in the vehicle width direction. A temporary deposit portion is formed that abuts on the upper surface and is temporarily deposited , and the lower surface of the vehicle width direction member of the mounting stay is formed in an uneven shape that is uneven in the front-rear direction when viewed from the bottom of the vehicle. The portion is realized by a configuration including a concave-convex shape portion that matches the uneven shape .

この発明の一実施例を以下図面に基づいて詳述する。
図面は車体後部下面構造を示し、図１は当該車体後部下面構造を備えた車両の側面図、図２は図１の要部拡大底面図、図３は車体後部下面構造を下方から見た状態で示す斜視図、図４は図２のＡ－Ａ線矢視断面図である。 An embodiment of the present invention will be described in detail below with reference to the drawings.
The drawings show the rear lower surface structure of the vehicle body, FIG. 1 is a side view of the vehicle having the rear lower surface structure of the vehicle body, FIG. 2 is an enlarged bottom view of a main part of FIG. The perspective view shown in FIG. 4 and FIG. 4 are cross-sectional views taken along the line AA of FIG.

図１に示すように、車体側部において、車両前部のフロントドア開口１を開閉可能に閉塞するサイドドアとしてのフロントドア２と、車両後部のリヤドア開口３を開閉可能に閉塞するサイドドアとしてのリヤドア４とを設けている。
上述のフロントドア２はドアアウタハンドル５を備えており、同様に、上述のリヤドア４もドアアウタハンドル６を備えている。 As shown in FIG. 1, on the side of the vehicle body, as a front door 2 as a side door for opening and closing the front door opening 1 at the front of the vehicle and as a side door for closing the rear door opening 3 at the rear of the vehicle so as to be openable and closable. The rear door 4 is provided.
The front door 2 described above includes a door outer handle 5, and similarly, the rear door 4 described above also includes a door outer handle 6.

図１に示すように、上述のフロントドア２の前部には、エンジンルームの側方を覆うフロントフェンダパネル７が設けられており、前輪８の位置と対応してフロントフェンダパネル７の下部には前輪ホイールハウス９が一体的に設けられている。 As shown in FIG. 1, a front fender panel 7 that covers the side of the engine room is provided at the front portion of the front door 2 described above, and is located at the lower portion of the front fender panel 7 corresponding to the position of the front wheel 8. The front wheel house 9 is integrally provided.

図１に示すように、上述のリヤドア４の後部には、荷室側方を覆うリヤフェンダパネル１０が設けられており、後輪１１の位置と対応してリヤフェンダパネル１０の下部には後輪ホイールハウス１２が一体的に設けられている。
なお、図１において、１３はドアミラー、１４は車両後部から左右の車両側部に回り込むように形成されたリヤバンパフェースである。 As shown in FIG. 1, a rear fender panel 10 that covers the side of the luggage compartment is provided at the rear portion of the rear door 4 described above, and a rear wheel wheel is provided at the lower portion of the rear fender panel 10 corresponding to the position of the rear wheel 11. The house 12 is integrally provided.
In FIG. 1, 13 is a door mirror, and 14 is a rear bumper face formed so as to wrap around from the rear portion of the vehicle to the left and right vehicle side portions.

図２に示すように、前輪ホイールハウス９の後縁下端部と後輪ホイールハウス１２の前縁下端部との間において、車室下部を車両前後方向に延びるサイドシル１５が設けられている。
このサイドシル１５は、サイドシルアウタとサイドシルインナ１５Ａとを接合固定して、車両前後方向に延びるサイドシル閉断面を備えた車体強度部材である。 As shown in FIG. 2, a side sill 15 extending the lower part of the passenger compartment in the front-rear direction of the vehicle is provided between the lower end of the rear edge of the front wheel house 9 and the lower end of the front edge of the rear wheel house 12.
The side sill 15 is a vehicle body strength member having a side sill closed cross section extending in the front-rear direction of the vehicle by joining and fixing the side sill outer and the side sill inner 15A.

図２に示すように、左右一対のサイドシル１５，１５には、当該サイドシル１５を前後のホイールハウス９，１２間にわたって覆うように設けられたガーニッシュ１６，１６が取付けられている。 As shown in FIG. 2, the pair of left and right side sills 15 and 15 are provided with garnishes 16 and 16 provided so as to cover the side sills 15 between the front and rear wheel houses 9 and 12.

後輪ホイールハウス１２の前縁下端部と対向するように、上述のガーニッシュ１６の後端部には、タイヤデフレクタ１７を設け、車体側部を流れる側面流が後輪ホイールハウス１２内に入り込まないよう一旦、車外側に指向させた後に、タイヤホイール外面に再付着するように偏向すべく構成している。 A tire deflector 17 is provided at the rear end of the garnish 16 so as to face the lower end of the front edge of the rear wheel house 12, so that the side current flowing on the side of the vehicle body does not enter the rear wheel house 12. It is configured to be deflected so that it is once directed to the outside of the vehicle and then reattached to the outer surface of the tire wheel.

図４に示すように、車室および荷室の底面を形成するフロアパネル１８は、フロントフロアパネルと、リヤシートパンと、リヤフロアパネルとを、車両前後方向に連続形成したものである。 As shown in FIG. 4, the floor panel 18 forming the bottom surface of the passenger compartment and the luggage compartment is formed by continuously forming a front floor panel, a rear seat pan, and a rear floor panel in the front-rear direction of the vehicle.

図２に示すように、上述のフロントフロアパネルからリヤシートパンの前後方向中間部まで車両前後方向に延びる上述のサイドシル１５がフロアパネル１８の車幅方向サイド部に接合固定されている。 As shown in FIG. 2, the above-mentioned side sill 15 extending in the front-rear direction of the vehicle from the above-mentioned front floor panel to the middle portion in the front-rear direction of the rear seat pan is joined and fixed to the side portion in the vehicle width direction of the floor panel 18.

図２、図４に示すように、上述のリヤシートパンの前後方向中間部からリヤフロアパネル後端まで車両前後方向に延びるリヤサイドフレーム１９を設けている。図４に示すように、このリヤサイドフレーム１９は、リヤサイドフレームアッパ２０と、リヤサイドフレームロア２１とを備えており、これらリヤサイドフレームアッパ２０と、リヤサイドフレームロア２１との間には、車両前後方向に延びるリヤサイドフレーム閉断面Ｓ１が形成されている。 As shown in FIGS. 2 and 4, a rear side frame 19 extending in the front-rear direction of the vehicle is provided from the middle portion in the front-rear direction of the above-mentioned rear seat pan to the rear end of the rear floor panel. As shown in FIG. 4, the rear side frame 19 includes a rear side frame upper 20 and a rear side frame lower 21, and between the rear side frame upper 20 and the rear side frame lower 21, the rear side frame lower 21 is located in the front-rear direction of the vehicle. An extended rear side frame closed cross section S1 is formed.

図２に示すように、後輪１１，１１の中心部よりも後方対応位置において、左右一対のリヤサイドフレーム１９，１９間には、車幅方向に延びるリヤクロスメンバ２２を横架し、このリヤクロスメンバ２２で左右一対のリヤサイドフレームロア２１，２１間を車幅方向に連結している。 As shown in FIG. 2, at a position corresponding to the rear of the center of the rear wheels 11 and 11, a rear cross member 22 extending in the vehicle width direction is laid horizontally between the pair of left and right rear side frames 19 and 19. A pair of left and right rear side frame lowers 21 and 21 are connected by a cross member 22 in the vehicle width direction.

一方、図２に示すように、フロア下部のトンネル部には、エンジンの排気ポートおよび排気マニホルドから排出された排気ガスを車両後方に導く排気管３０を設けている。この排気管３０には触媒コンバータ３１を介設すると共に、リヤクロスメンバ２２後部位置まで延びる排気管３０の後端部には、消音器としてのサイレンサ３２を連通連結しており、このサイレンサ３２の左右両側には、一旦、車幅方向外側に延びた後に、車両後方に延びる底面視Ｌ字形状のテールパイプ３３，３３を取付けている。
そして、上述のサイレンサ３２の前部車幅方向外側と、テールパイプ３３のコーナ部との間を、整流用のカバー３４で、その下方から覆っている。 On the other hand, as shown in FIG. 2, the tunnel portion at the lower part of the floor is provided with an exhaust pipe 30 for guiding the exhaust gas discharged from the exhaust port of the engine and the exhaust manifold to the rear of the vehicle. A catalytic converter 31 is interposed in the exhaust pipe 30, and a silencer 32 as a silencer is continuously connected to the rear end of the exhaust pipe 30 extending to the rear position of the rear cross member 22. On both the left and right sides, tail pipes 33 and 33 having an L-shaped bottom view extending to the rear of the vehicle after extending outward in the vehicle width direction are attached.
Then, a cover 34 for rectification covers the outside of the silencer 32 outside in the front vehicle width direction and the corner portion of the tail pipe 33 from below.

図２に示すように、トンネル部を除いて車体下面を覆う整流用のフロアアンダカバー３５，３６を設けている。これら左右一対の各フロアアンダカバー３５，３６はその底面に平坦な整流面を備えている。 As shown in FIG. 2, floor under covers 35 and 36 for rectification are provided to cover the lower surface of the vehicle body except for the tunnel portion. Each of the pair of left and right floor undercovers 35 and 36 has a flat rectifying surface on the bottom surface thereof.

また、これらのフロアアンダカバー３５，３６は、前側のフロアアンダカバー３５と後側のフロアアンダカバー３６とを車両前後方向に連続するように形成したものである。 Further, these floor undercovers 35 and 36 are formed so that the front floor undercover 35 and the rear floor undercover 36 are continuous in the front-rear direction of the vehicle.

図２に示すように、左右一対の後輪１１，１１を懸架するトーションビーム式リヤサスペンション４０を設けている。
このリヤサスペンション４０は、左右一対のトレーリングアームと、これらの各トレーリングアームを車幅方向に延びて連結するトーションビーム４１（ねじり棒ばね）と、を備えている。そして、図２に示すように、トレーリングアームの下部には、整流用のアームカバー４２が設けられている。 As shown in FIG. 2, a torsion beam type rear suspension 40 for suspending a pair of left and right rear wheels 11 and 11 is provided.
The rear suspension 40 includes a pair of left and right trailing arms and a torsion beam 41 (torsion bar spring) that extends and connects each of these trailing arms in the vehicle width direction. Then, as shown in FIG. 2, an arm cover 42 for rectification is provided at the lower part of the trailing arm.

図５は図２のＢ－Ｂ線に沿う要部の矢視断面図、図６は図２のＣ－Ｃ線に沿う要部の矢視断面図、図７は取付けステーを斜め上方から見た状態で示す斜視図、図８は取付けステーを斜め下方から見た状態で示す斜視図、図９はリヤアンダカバーを斜め上方から見た状態で示す斜視図、図１０はリヤアンダカバーを斜め下方から見た状態で示す斜視図、図１１は図６の要部拡大図である。 5 is a cross-sectional view of the main part along the line BB of FIG. 2, FIG. 6 is a cross-sectional view of the main part along the line CC of FIG. 2, and FIG. 7 is a view of the mounting stay from diagonally above. FIG. 8 is a perspective view showing the mounting stay when viewed from diagonally below, FIG. 9 is a perspective view showing the rear under cover when viewed from diagonally above, and FIG. 10 is a perspective view showing the rear under cover diagonally. A perspective view showing a state seen from below, FIG. 11 is an enlarged view of a main part of FIG.

図５、図６に示すように、上述のサイレンサ３２の車幅方向両側上部にはハンガブラケット４３，４３（但し、図５では車両左側のハンガブラケット４３のみを示す）が固定されており、図５に示すように、上述のサイレンサ３２は車体後部の荷室のフロア下部において車体としてのリヤサイドフレームロア２１に、上下の棒状のハンガ部材４４，４５と、これに係合するラバー部材４６とを介して懸下されたものである。 As shown in FIGS. 5 and 6, hanger brackets 43 and 43 (however, only the hanger bracket 43 on the left side of the vehicle is shown in FIG. 5) are fixed to the upper portions of both sides of the silencer 32 in the vehicle width direction. As shown in 5, the above-mentioned silencer 32 has upper and lower rod-shaped hanger members 44 and 45 and a rubber member 46 engaged with the upper and lower rod-shaped hanger members 44 and 45 on the rear side frame lower 21 as the vehicle body at the lower part of the floor of the luggage compartment at the rear of the vehicle body. It was suspended through.

図５に示すように、上側のハンガ部材４４はリヤサイドフレームロア２１に固定されており、下側のハンガ部材４５はハンガブラケット４３に固定されており、上述のラバー部材４６は上側のハンガ部材４４における下部折曲げ片と、下側のハンガ部材４５における上部折曲げ片とにそれぞれ係合するものである。 As shown in FIG. 5, the upper hanger member 44 is fixed to the rear side frame lower 21, the lower hanger member 45 is fixed to the hanger bracket 43, and the above-mentioned rubber member 46 is the upper hanger member 44. The lower bent piece in the above and the upper bent piece in the lower hanger member 45 are engaged with each other.

また、図５、図６に示すように、サイレンサ３２とフロアパネル１８、詳しくは、荷室凹部１８Ａとの間には、熱害防止用のインシュレータ４７が配設されている。
さらに、図５、図６に示すように、上述のサイレンサ３２の底面は略平坦な整流面を形成するように形成されている。 Further, as shown in FIGS. 5 and 6, an insulator 47 for preventing heat damage is arranged between the silencer 32 and the floor panel 18, specifically, the luggage compartment recess 18A.
Further, as shown in FIGS. 5 and 6, the bottom surface of the silencer 32 is formed so as to form a substantially flat rectifying surface.

一方で、図５、図６に示すように、フロアパネル１８の後端部には、リヤエンドパネル２３が設けられており、このリヤエンドパネル２３の後面部には、棒状のハンガ部材２４を用いて、バンパリテーナ２５が支持されている。 On the other hand, as shown in FIGS. 5 and 6, a rear end panel 23 is provided at the rear end portion of the floor panel 18, and a rod-shaped hanger member 24 is used at the rear surface portion of the rear end panel 23. , Vamparitainer 25 is supported.

図６に示すように、上述のリヤバンパフェース１４の下端部１４ａは、上述のサイレンサ３２の後端底部よりも高い位置に配置されており、同図に示すように、サイレンサ３２の後端底部とリヤバンパフェース１４の下端部１４ａとの間を下方から覆うリヤアンダカバー５０を備えている。 As shown in FIG. 6, the lower end portion 14a of the rear bumper face 14 is arranged at a position higher than the rear end bottom portion of the silencer 32, and as shown in the figure, the lower end portion 14a and the rear end bottom portion of the silencer 32 are arranged. A rear under cover 50 that covers the space between the rear bumper face 14 and the lower end portion 14a from below is provided.

図３に示すように、上述のリヤアンダカバー５０は、ボルト、ナットやクリップ等の取付け部材５１を用いて、その後端部がバンパリテーナ２５に固定されており、このバンパリテーナ２５を介してリヤアンダカバー５０後端部がリヤバンパフェース１４の下端部１４ａに固定されている。 As shown in FIG. 3, the rear under cover 50 described above has its rear end fixed to the bumper retainer 25 by using mounting members 51 such as bolts, nuts and clips, and the rear is fixed via the bumper retainer 25. The rear end of the undercover 50 is fixed to the lower end 14a of the rear bumper face 14.

図４に示すように、左右一対のリヤサイドフレーム１９，１９におけるリヤサイドフレームロア２１，２１間には、凹字型形状の取付けステー６０が設けられている。この取付けステー６０は剛性を高めるために金属にて形成されている。 As shown in FIG. 4, a concave mounting stay 60 is provided between the rear side frame lowers 21 and 21 in the pair of left and right rear side frames 19 and 19. The mounting stay 60 is made of metal in order to increase the rigidity.

同図に示すように、該取付けステー６０はその車幅方向端部において上下方向に延びる左右一対の脚部６１，６１と、これら左右一対の脚部６１，６１における下部相互間を車幅方向に延びて連結する車幅方向メンバ６２と、を備えており、図３に示すように、上述のリヤアンダカバー５０の前端部は、ボルト、ナットやクリップ等の取付け部材５２を用いて、取付けステー６０における車幅方向メンバ６２に下方から固定されている。 As shown in the figure, the mounting stay 60 has a pair of left and right leg portions 61, 61 extending in the vertical direction at the end portion in the vehicle width direction, and the lower portions of the pair of left and right leg portions 61, 61 in the vehicle width direction. A member 62 in the vehicle width direction extending to and connected to the rear undercover 50 is provided, and as shown in FIG. 3, the front end portion of the rear undercover 50 is mounted by using a mounting member 52 such as a bolt, a nut, or a clip. It is fixed to the member 62 in the vehicle width direction of the stay 60 from below.

図４に示すように、取付けステー６０における脚部６１の上端には、当該上端から車幅方向外側に延びる取付け片６３が一体形成されており、この取付け片６３が、ボルト、ナット等の取付け部材６４を用いて、荷室フロア下面部左右としての左右のリヤサイドフレームロア２１の底部に締結固定されている。 As shown in FIG. 4, a mounting piece 63 extending outward in the vehicle width direction from the upper end of the leg portion 61 of the mounting stay 60 is integrally formed, and the mounting piece 63 is used for mounting bolts, nuts, and the like. The member 64 is fastened and fixed to the bottoms of the left and right rear side frame lowers 21 as the left and right sides of the lower surface of the luggage compartment floor.

図７、図８に取付けステー６０を斜視図にて示すように、この実施例では、上述の取付け部材６４と併せて、取付けステー６０を、クリップ６５を用いてリヤサイドフレームロア２１底部に係合固定するよう構成している。 As shown in the perspective view of the mounting stay 60 in FIGS. 7 and 8, in this embodiment, the mounting stay 60 is engaged with the bottom of the rear side frame lower 21 by using the clip 65 together with the mounting member 64 described above. It is configured to be fixed.

図７、図８に示すように、取付けステー６０の車幅方向メンバ６２は、主面部６２ａと、この主面部６２ａの前端から上方に立ち上がる立設片６２ｂと、主面部６２ａの前端から下方に延びる縦壁６２ｃと、主面部６２ａの後端から上方に立ち上がるリブ６２ｄと、を備えている。 As shown in FIGS. 7 and 8, the vehicle width direction member 62 of the mounting stay 60 includes a main surface portion 62a, an upright piece 62b rising upward from the front end of the main surface portion 62a, and downward from the front end of the main surface portion 62a. It includes an extending vertical wall 62c and a rib 62d that rises upward from the rear end of the main surface portion 62a .

図８に示すように、車両底面視で取付けステー６０の車幅方向メンバ６２下面は、前後方向に凹凸する凹凸形状に形成されている。この実施例では、同図に示すように、車幅方向メンバ６２の車幅方向中央部において、上記縦壁６２ｃから主面部６２ａ下面に沿って後方に延びる凸部６６を一体形成している。 As shown in FIG. 8, the lower surface of the member 62 in the vehicle width direction of the mounting stay 60 is formed in an uneven shape uneven in the front-rear direction when viewed from the bottom of the vehicle. In this embodiment, as shown in the figure, a convex portion 66 extending rearward from the vertical wall 62c along the lower surface of the main surface portion 62a is integrally formed at the central portion in the vehicle width direction of the vehicle width direction member 62.

図７、図８に示すように、上述の主面部６２ａには車幅方向に離間して複数箇所に開口部６２ｅを形成しており、これらの各開口部６２ｅの口縁には、筒状ナットとクリップとを一体形成したアタッチメントとしてのナット部材６７を取付けて、このナット部材６７が前述の取付け部材５２（図３参照）の一部を構成するように成している。 As shown in FIGS. 7 and 8, openings 62e are formed at a plurality of locations apart from each other in the vehicle width direction in the above-mentioned main surface portion 62a, and the rim of each of these openings 62e has a cylindrical shape. A nut member 67 as an attachment integrally formed with a nut and a clip is attached so that the nut member 67 constitutes a part of the above-mentioned attachment member 52 (see FIG. 3).

図７に示すように、上述の凸部６６と対応して、車幅方向メンバ６２の主面部６２ａには、後述する仮預け部５４（図９、図１０、図１１参照）を受けるリブ構造の受け部６８が一体形成されている。 As shown in FIG. 7, corresponding to the above-mentioned convex portion 66, the main surface portion 62a of the vehicle width direction member 62 has a rib structure that receives a temporary deposit portion 54 (see FIGS. 9, 10, and 11) described later. The receiving portion 68 is integrally formed.

図３、図９、図１０に示すように、上述のリヤアンダカバー５０はポリプロピレン等の合成樹脂により形成されており、該リヤアンダカバー５０の前片部５０ａは、取付けステー６０の凸部６６と合致する凹凸形状部として車両後方側に窪む凹部５３を備えている。 As shown in FIGS. 3, 9, and 10, the rear undercover 50 is made of a synthetic resin such as polypropylene, and the front piece portion 50a of the rear undercover 50 is a convex portion 66 of the mounting stay 60. A recess 53 that is recessed on the rear side of the vehicle is provided as a concave-convex shape portion that matches the above.

この凹部５３は取付けステー６０の凸部６６と対応して、リヤアンダカバー５０の前片部５０ａにおける車幅方向中央部に形成されたもので、これら凸部６６と凹部５３との両者により、面一合わせを達成すると共に、リヤアンダカバー５０それ自体の剛性向上を図るよう構成したものである。 The concave portion 53 is formed in the central portion in the vehicle width direction of the front piece portion 50a of the rear under cover 50 corresponding to the convex portion 66 of the mounting stay 60, and both of the convex portion 66 and the concave portion 53 form a concave portion 53. It is configured to achieve surface alignment and improve the rigidity of the rear under cover 50 itself.

図９、図１０、図１１に示すように、上述の凹部５３には、上方に延びる縦壁５０ｂと、この縦壁５０ｂの上端から前方に延びる水平部５０ｃと、水平部５０ｃの前端から前上に延びるスラント部５０ｄと、から成る仮預け部５４が形成されている。 As shown in FIGS. 9, 10, and 11, the recess 53 has a vertical wall 50b extending upward, a horizontal portion 50c extending forward from the upper end of the vertical wall 50b, and a front end to the front of the horizontal portion 50c. A temporary deposit portion 54 composed of a slant portion 50d extending upward is formed.

図１１に示すように、この仮預け部５４は、リヤアンダカバー５０の前端部に形成されたもので、当該仮預け部５４は、前方側に延出して車幅方向メンバ６２の上面、詳しくは、受け部６８およびリブ６２ｄの上面に仮預けされるものである。 As shown in FIG. 11, the temporary deposit portion 54 is formed at the front end portion of the rear under cover 50, and the temporary deposit portion 54 extends forward and extends to the upper surface of the vehicle width direction member 62, in detail. Is temporarily deposited on the upper surfaces of the receiving portion 68 and the rib 62d.

これにより、リヤアンダカバー５０の組付け時に、仮預け部５４を取付けステー６０における車幅方向メンバ６２の上面に当接して仮預けを行ない、当該リヤアンダカバー５０の組付け性向上を図るよう構成したものである。 As a result, when assembling the rear under cover 50, the temporary deposit portion 54 is brought into contact with the upper surface of the vehicle width direction member 62 in the mounting stay 60 to perform temporary deposit, and the assembling property of the rear under cover 50 is improved. It is a composition.

図９～図１１に示すように、上述のリヤアンダカバー５０は、前後方向において前半の略水平の平板領域であって、サイレンサ３２底部を通過した空気流が再付着する前側水平部５５と、この前側水平部５５の後端部で折曲されてリヤバンパフェース１４の下端部１４ａに向けて緩やかに上昇する平板領域である後側緩傾斜部５６と、を備えている。 As shown in FIGS. 9 to 11, the above-mentioned rear under cover 50 is a substantially horizontal flat plate region in the first half in the front-rear direction, and has a front horizontal portion 55 to which air flow passing through the bottom of the silencer 32 redistributes. The rear side gently inclined portion 56, which is a flat plate region that is bent at the rear end portion of the front side horizontal portion 55 and gently rises toward the lower end portion 14a of the rear bumper face 14, is provided.

ここで、上述の後側緩傾斜部５６は、図１１に示すように、地面と平行な線である仮想水平線ＨＯＲに対して、空力グランドラインＧＬを形成すべく後ろ上がりに１０度前後、好ましくは、１３度の傾斜角を有するように形成されている。 Here, as shown in FIG. 11, the above-mentioned rear gentle slope portion 56 is preferably about 10 degrees backward to form an aerodynamic ground line GL with respect to the virtual horizontal line HOR which is a line parallel to the ground. Is formed to have an inclination angle of 13 degrees.

これにより、ラバー部材４６（図５参照）を介して懸下されたサイレンサ３２の底面高さにばらつきがあっても、サイレンサ３２底部を通過した床下走行風を略水平の平板領域である前側水平部５５に安定的に再付着させて、その後、リヤバンパフェース１４の下端部１４ａに向けて緩やかに上昇する平板領域である後側緩傾斜部５６にて空力グランドラインＧＬによる効果を達成すべく構成したものである。 As a result, even if the height of the bottom surface of the silencer 32 suspended via the rubber member 46 (see FIG. 5) varies, the underfloor running wind passing through the bottom of the silencer 32 is a substantially horizontal flat plate region on the front side. It is configured to stably reattach to the portion 55, and then to achieve the effect of the aerodynamic ground line GL at the rear side gently inclined portion 56 which is a flat plate region that gently rises toward the lower end portion 14a of the rear bumper face 14. It was done.

これに対して、図１１に仮想線βで示すように、後側緩傾斜部５６から車両前方に延長させた前側非水平部を有する比較例においては、サイレンサの懸下構造および該サイレンサの製造公差により、当該サイレンサ底面高さのばらつきに起因して、リヤアンダカバー前端の上下位置とサイレンサ底面高さとの間に誤差が生じ、特に、リヤアンダカバー前端がサイレンサ底面より低位置になると、サイレンサ底面通過後の流れが剥がれて、リヤアンダカバーに再付着しなくなるものである。 On the other hand, as shown by the virtual line β in FIG. 11, in the comparative example having the front non-horizontal portion extending from the rear gentle slope portion 56 to the front of the vehicle, the suspension structure of the silencer and the manufacture of the silencer Due to the tolerance, there is an error between the vertical position of the front end of the rear under cover and the height of the bottom surface of the silencer due to the variation in the height of the bottom surface of the silencer. The flow after passing through the bottom surface is peeled off and does not reattach to the rear undercover.

また、図２、図３、図９、図１０に示すように、車両底面視で上述の後側緩傾斜部５６、並びに、該後側緩傾斜部５６と前側水平部５５との境界部５７が、上述のリヤバンパフェース１４の下端前部の形状に沿う円弧形状に形成されている。
これにより、空力グランドラインＧＬを維持しつつ、再付着領域（前側水平部５５の面積）を車幅方向に拡大すべく構成したものである。 Further, as shown in FIGS. 2, 3, 9, and 10, the above-mentioned rear side gently inclined portion 56 and the boundary portion 57 between the rear side gently inclined portion 56 and the front side horizontal portion 55 when viewed from the bottom of the vehicle. Is formed in an arc shape that follows the shape of the lower end front portion of the rear bumper face 14 described above.
As a result, the reattachment region (the area of the front horizontal portion 55) is configured to be expanded in the vehicle width direction while maintaining the aerodynamic ground line GL.

さらに、図９、図１１に示すように、上述のリヤアンダカバー５０における仮預け部５４の上面には、車両前後方向に延びる複数条のリブ５８が一体形成されており、該リブ５８にて、当該仮預け部５４の剛性向上を図るように構成している。 Further, as shown in FIGS. 9 and 11, a plurality of ribs 58 extending in the front-rear direction of the vehicle are integrally formed on the upper surface of the temporary deposit portion 54 in the above-mentioned rear under cover 50, and the ribs 58 are used. , The temporary deposit portion 54 is configured to improve the rigidity.

さらにまた、図９、図１０に示すように、リヤアンダカバー５０の後側緩傾斜部５６における車幅方向中間部には、ジャッキアップ用の開口部５９が開口形成されている。 Furthermore, as shown in FIGS. 9 and 10, an opening 59 for jacking up is formed in the middle portion in the vehicle width direction of the rear side gently inclined portion 56 of the rear under cover 50.

加えて、図９、図１０に示すように、リヤアンダカバー５０の前側水平部５５の前端には、当該前端から上方に延びた後に前方に延びる逆Ｌ字状のフランジ部５０ｅが一体形成されており、図３で示した取付け部材５２の配設位置と対応して、該フランジ部５０ｅの車幅方向複数箇所には、当該フランジ部５０ｅを後方に拡大したフランジ拡大部５０ｆが一体形成されており、このフランジ拡大部５０ｆを、車幅方向メンバ６２に対する取付け部に設定し、取付け部材５２としてボルト、ナットを用いた場合、ボルト頭部が前側水平部５５の下面よりも下方へ突出しないよう構成している。 In addition, as shown in FIGS. 9 and 10, an inverted L-shaped flange portion 50e extending upward from the front end and then extending forward is integrally formed at the front end of the front horizontal portion 55 of the rear undercover 50. Corresponding to the arrangement position of the mounting member 52 shown in FIG. 3, the flange enlarged portion 50f obtained by expanding the flange portion 50e rearward is integrally formed at a plurality of locations in the vehicle width direction of the flange portion 50e. When this flange expansion portion 50f is set as a mounting portion with respect to the vehicle width direction member 62 and bolts and nuts are used as the mounting member 52, the bolt head does not protrude downward from the lower surface of the front horizontal portion 55. It is configured as follows.

また、図９～図１１に示すように、リヤアンダカバー５０の後側緩傾斜部５６の後端には、当該後端から上方に延びた後に後方に延びる逆Ｌ字状のフランジ部５０gが一体形成されており、図３で示した取付け部材５１の配設位置と対応して、該フランジ部５０gの車幅方向複数箇所には、当該取付け部材５１の取付け部５０ｈが形成されており、取付け部材５１としてボルト、ナットを用いた場合、ボルト頭部が後側緩傾斜部５６の下面よりも下方へ突出しないよう構成している。
なお、図２において、７０は燃料タンクである。また、図中、矢印Ｆは車両前方を示し、矢印Ｒは車両後方を示し、矢印ＵＰは車両上方を示す。 Further, as shown in FIGS. 9 to 11, at the rear end of the rear side gently inclined portion 56 of the rear under cover 50, an inverted L-shaped flange portion 50 g extending upward from the rear end and then extending rearward is provided. It is integrally formed, and corresponding to the arrangement position of the mounting member 51 shown in FIG. 3, the mounting portion 50h of the mounting member 51 is formed at a plurality of locations in the vehicle width direction of the flange portion 50g. When bolts and nuts are used as the mounting member 51, the bolt head is configured so as not to protrude downward from the lower surface of the rear gently inclined portion 56.
In FIG. 2, 70 is a fuel tank. Further, in the figure, the arrow F indicates the front of the vehicle, the arrow R indicates the rear of the vehicle, and the arrow UP indicates the upper part of the vehicle.

このように、上記実施例の車体後部下面構造は、車体荷室のフロア下部に懸下されたサイレンサ３２と、上記サイレンサ３２の後端底部より高い位置に配置されたリヤバンパフェース１４と、上記サイレンサ３２の後端底部と上記リヤバンパフェース１４下端部１４ａとの間を下方から覆うリヤアンダカバー５０と、を備えた車体後部下面構造であって、上記リヤアンダカバー５０はその後端部が上記リヤバンパフェース１４下端部１４ａに固定され、その前端部が荷室フロア下面部（リヤサイドフレームロア２１参照）左右に両脚部６１，６１が締結された凹字型形状の取付けステー６０における車幅方向メンバ６２に下方から固定され、上記リヤアンダカバー５０の前端部には、前方側に延出して上記車幅方向メンバ６２の上面に当接して仮預けされる仮預け部５４が形成されたものである（図４、図６参照）。 As described above, the vehicle body rear lower surface structure of the above embodiment includes the silencer 32 suspended from the lower floor of the vehicle body luggage compartment, the rear bumper face 14 arranged at a position higher than the rear end bottom of the silencer 32, and the silencer. It is a vehicle body rear lower surface structure including a rear undercover 50 that covers between the bottom of the rear end of 32 and the lower end of the rear bumper face 14 from below, and the rear undercover 50 has a rear end of the rear bumper face. 14 It is fixed to the lower end 14a, and its front end is attached to the vehicle width direction member 62 in the concave mounting stay 60 to which both legs 61, 61 are fastened to the left and right of the lower surface of the luggage compartment floor (see the rear side frame lower 21). A temporary deposit portion 54, which is fixed from below and extends forward and abuts on the upper surface of the vehicle width direction member 62, is formed at the front end portion of the rear undercover 50. See FIGS. 4 and 6).

この構成によれば、リヤアンダカバー５０の後端部をリヤバンパフェース１４下端部１４ａに固定し、リヤアンダカバー５０の前端部を剛性部材である取付けステー６０の車幅方向メンバ６２に固定するので、当該リヤアンダカバー５０の上下方向の取付け高さを高精度に確保することができると共に、その充分な支持剛性を確保することができる。 According to this configuration, the rear end portion of the rear under cover 50 is fixed to the lower end portion 14a of the rear bumper face 14, and the front end portion of the rear under cover 50 is fixed to the vehicle width direction member 62 of the mounting stay 60 which is a rigid member. The mounting height of the rear under cover 50 in the vertical direction can be ensured with high accuracy, and sufficient support rigidity thereof can be ensured.

また、リヤアンダカバー５０の組付け時には、上記仮預け部５４を取付けステー６０における車幅方向メンバ６２の上面に当接して仮預けするので、その組付け性の向上を図ることができる。 Further, when the rear under cover 50 is assembled, the temporary deposit portion 54 is brought into contact with the upper surface of the vehicle width direction member 62 in the mounting stay 60 to be temporarily deposited, so that the assembling property can be improved.

また、この発明の一実施形態においては、車両底面視で上記取付けステー６０の車幅方向メンバ６２下面が前後方向に凹凸する凹凸形状（凸部６６参照）に形成されており、上記リヤアンダカバー５０の前片部５０ａは、上記凹凸形状（凸部６６参照）に合致する凹凸形状部（凹部５３参照）を備えたものである（図３、図８、図１０参照）。 Further, in one embodiment of the present invention, the lower surface of the vehicle width direction member 62 of the mounting stay 60 is formed in an uneven shape (see the convex portion 66) in which the lower surface of the vehicle width direction member 62 is uneven in the front-rear direction when viewed from the bottom of the vehicle. The front piece portion 50a of the 50 is provided with a concave-convex shape portion (see the concave portion 53) that matches the concave-convex shape (see the convex portion 66) (see FIGS. 3, 8, and 10).

この構成によれば、リヤアンダカバー５０前片部５０ａの凹凸形状部（凹部５３参照）が、取付けステー６０における車幅方向メンバ６２の凹凸形状（凸部６６参照）に合致して、面一合わせが達成できると共に、当該凹凸形状部（凹部５３参照）によりリヤアンダカバー５０それ自体の剛性向上を図ることができる。 According to this configuration, the uneven shape portion (see the concave portion 53) of the front piece portion 50a of the rear under cover 50 matches the uneven shape (see the convex portion 66) of the vehicle width direction member 62 in the mounting stay 60, and is flush with each other. The alignment can be achieved, and the rigidity of the rear under cover 50 itself can be improved by the concave-convex shape portion (see the concave portion 53).

この発明の構成と、上述の実施例との対応において、
この発明の荷室フロア下面部は、実施例のリヤサイドフレームロア２１、特にその下面に対応し、
以下同様に、
取付けステーの凹凸形状は、凸部６６に対応し、
リヤアンダカバーの凹凸形状部は、凹部５３に対応するも、
この発明は、上述の実施例の構成のみに限定されるものではない。 In the correspondence between the configuration of the present invention and the above-described embodiment,
The lower surface portion of the luggage compartment floor of the present invention corresponds to the rear side frame lower 21 of the embodiment, particularly the lower surface thereof.
Similarly below
The uneven shape of the mounting stay corresponds to the convex portion 66,
The uneven shape of the rear under cover corresponds to the concave portion 53,
The present invention is not limited to the configuration of the above-described embodiment.

例えば、上記実施例においては、取付けステー６０に凸部６６を形成し、リヤアンダカバー５０に凹部５３を形成したが、この凹凸構造は上記実施例の逆の構成、すなわち、取付けステー６０に凹部を形成し、リヤアンダカバー５０に凸部を形成する構造を採用してもよい。 For example, in the above embodiment, the convex portion 66 is formed in the mounting stay 60 and the concave portion 53 is formed in the rear under cover 50, but this concave-convex structure has the reverse configuration of the above embodiment, that is, the concave portion in the mounting stay 60. , And a structure that forms a convex portion on the rear undercover 50 may be adopted.

以上説明したように、本発明は、車体荷室のフロア下部に懸下されたサイレンサと、上記サイレンサの後端底部より高い位置に配置されたリヤバンパフェースと、上記サイレンサの後端底部と上記リヤバンパフェース下端部との間を下方から覆うリヤアンダカバーと、を備えた車体後部下面構造について有用である。 As described above, the present invention has a silencer suspended from the lower part of the floor of the vehicle body luggage compartment, a rear bumper face arranged at a position higher than the rear end bottom of the silencer, and a rear end bottom of the silencer and the rear bumper. It is useful for a rear underside structure of a vehicle body provided with a rear under cover that covers the space between the lower end of the face and the lower end of the face from below.

１４…リヤバンパフェース
２１…リヤサイドフレームロア（荷室フロア下面部）
３２…サイレンサ
５０…リヤアンダカバー
５０ｂ…縦壁
５０ｃ…水平部
５３…凹部（凹凸形状部）
５４…仮預け部
６０…取付けステー
６１…脚部
６２…車幅方向メンバ
６６…凸部（凹凸形状） 14 ... Rear bumper face 21 ... Rear side frame lower (lower surface of luggage compartment floor)
32 ... Silencer 50 ... Rear under cover
50b ... Vertical wall
50c ... Horizontal part
53 ... Concave part (concave and convex shape part)
54 ... Temporary deposit 60 ... Mounting stay 61 ... Leg 62 ... Vehicle width direction member 66 ... Convex part (concave and convex shape)

Claims (2)

車体荷室のフロア下部に懸下されたサイレンサと、
上記サイレンサの後端底部より高い位置に配置されたリヤバンパフェースと、
上記サイレンサの後端底部と上記リヤバンパフェース下端部との間を下方から覆うリヤアンダカバーと、を備えた車体後部下面構造であって、
上記リヤアンダカバーはその後端部が上記リヤバンパフェース下端部に固定され、
その前端部が荷室フロア下面部左右に両脚部が締結された凹字型形状の取付けステーにおける車幅方向メンバに下方から固定され、
上記リヤアンダカバーの前端部には、前方側に延出して上記車幅方向メンバの上面に当接して仮預けされる仮預け部が形成され、
車両底面視で上記取付けステーの車幅方向メンバ下面が前後方向に凹凸する凹凸形状に形成されており、
上記リヤアンダカバーの前片部は、上記凹凸形状に合致する凹凸形状部を備えたことを特徴とする
車体後部下面構造。 A silencer suspended at the bottom of the luggage compartment floor,
The rear bumper face located higher than the bottom of the rear end of the silencer,
It is a rear lower surface structure of the vehicle body provided with a rear under cover that covers between the bottom of the rear end of the silencer and the lower end of the rear bumper face from below.
The rear end of the rear under cover is fixed to the lower end of the rear bumper face.
Its front end is fixed from below to a member in the vehicle width direction in a concave -shaped mounting stay in which both legs are fastened to the left and right of the lower surface of the luggage compartment floor.
At the front end of the rear under cover, a temporary deposit portion is formed which extends forward and abuts on the upper surface of the vehicle width direction member to be temporarily deposited .
When viewed from the bottom of the vehicle, the lower surface of the member of the mounting stay in the vehicle width direction is formed into an uneven shape that is uneven in the front-rear direction.
The front piece portion of the rear under cover is characterized by having an uneven shape portion that matches the uneven shape.
The lower surface structure at the rear of the car body. 車体荷室のフロア下部に懸下されたサイレンサと、
上記サイレンサの後端底部より高い位置に配置されたリヤバンパフェースと、
上記サイレンサの後端底部と上記リヤバンパフェース下端部との間を下方から覆うリヤアンダカバーと、を備えた車体後部下面構造であって、
上記リヤアンダカバーはその後端部が上記リヤバンパフェース下端部に固定され、
上記リヤアンダカバーの前端部が荷室フロア下面部左右に両脚部が締結された凹字型形状の取付けステーにおいて車幅方向に延設する車幅方向メンバに下方から固定され、
上記リヤアンダカバーは、上方に延びる縦壁と該縦壁の上端から前方に延出する水平部とを有し、該水平部の下面が上記車幅方向メンバの上面に当接して仮預けされる仮預け部が形成されることを特徴とする
車体後部下面構造。 A silencer suspended at the bottom of the luggage compartment floor,
The rear bumper face located higher than the bottom of the rear end of the silencer,
It is a rear lower surface structure of the vehicle body provided with a rear under cover that covers between the bottom of the rear end of the silencer and the lower end of the rear bumper face from below.
The rear end of the rear under cover is fixed to the lower end of the rear bumper face.
The front end of the rear under cover is fixed from below to a member in the vehicle width direction extending in the vehicle width direction in a concave-shaped mounting stay in which both legs are fastened to the left and right of the lower surface of the luggage compartment floor.
The rear under cover has a vertical wall extending upward and a horizontal portion extending forward from the upper end of the vertical wall, and the lower surface of the horizontal portion abuts on the upper surface of the vehicle width direction member and is temporarily deposited. The lower surface structure of the rear part of the vehicle body is characterized in that a temporary deposit portion is formed .
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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006021635A (en) 2004-07-08 2006-01-26 Mazda Motor Corp Lower part vehicle body structure of vehicle
JP2009096438A (en) 2007-10-19 2009-05-07 Honda Motor Co Ltd Undercover for vehicle
JP2014237380A (en) 2013-06-07 2014-12-18 トヨタ車体株式会社 Vehicle undercover assembly structure
JP2015058778A (en) 2013-09-18 2015-03-30 スズキ株式会社 Cover structure of vehicle body lower part
JP2017039354A (en) 2015-08-18 2017-02-23 マツダ株式会社 Flow straightening structure for lower part of vehicle
US20170341335A1 (en) 2016-05-31 2017-11-30 Cadillac Products Automotive Company Fibrous vehicle underbody shield

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59102482U (en) * 1982-12-23 1984-07-10 トヨタ自動車株式会社 Mounting structure of automobile resin engine undercover
JPH03103881U (en) * 1990-02-09 1991-10-29

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006021635A (en) 2004-07-08 2006-01-26 Mazda Motor Corp Lower part vehicle body structure of vehicle
JP2009096438A (en) 2007-10-19 2009-05-07 Honda Motor Co Ltd Undercover for vehicle
JP2014237380A (en) 2013-06-07 2014-12-18 トヨタ車体株式会社 Vehicle undercover assembly structure
JP2015058778A (en) 2013-09-18 2015-03-30 スズキ株式会社 Cover structure of vehicle body lower part
JP2017039354A (en) 2015-08-18 2017-02-23 マツダ株式会社 Flow straightening structure for lower part of vehicle
US20170341335A1 (en) 2016-05-31 2017-11-30 Cadillac Products Automotive Company Fibrous vehicle underbody shield

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