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JP2018165107A - Vehicle rear part structure - Google Patents

Vehicle rear part structure Download PDF

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Publication number
JP2018165107A
JP2018165107A JP2017063294A JP2017063294A JP2018165107A JP 2018165107 A JP2018165107 A JP 2018165107A JP 2017063294 A JP2017063294 A JP 2017063294A JP 2017063294 A JP2017063294 A JP 2017063294A JP 2018165107 A JP2018165107 A JP 2018165107A
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Japan
Prior art keywords
rear side
side member
extension
vehicle
joint
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Granted
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JP2017063294A
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JP6814409B2 (en
Inventor
暁広 刑部
Akihiro Osakabe
暁広 刑部
達哉 真鍋
Tatsuya Manabe
達哉 真鍋
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Suzuki Motor Corp
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Suzuki Motor Corp
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Priority to JP2017063294A priority Critical patent/JP6814409B2/en
Priority to DE102017130699.4A priority patent/DE102017130699B4/en
Priority to FR1852399A priority patent/FR3064582B1/en
Priority to CN201810247868.XA priority patent/CN108657289B/en
Publication of JP2018165107A publication Critical patent/JP2018165107A/en
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Publication of JP6814409B2 publication Critical patent/JP6814409B2/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B62D25/08—Front or rear portions
    • B62D25/087—Luggage compartments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B62D25/08—Front or rear portions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B62D25/02—Side panels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B62D25/08—Front or rear portions
    • B62D25/088—Details of structures as upper supports for springs or dampers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B62D25/20—Floors or bottom sub-units

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Body Structure For Vehicles (AREA)

Abstract

PROBLEM TO BE SOLVED: To prevent bending etc. of a rear side member caused by a rear collision, reduce the number of components, and inhibit deformation of a vehicle body.SOLUTION: A rear side member 3 and a rear side member extension 4 have U shaped cross sections, and a reinforcement member 7 having a U shaped cross section is disposed in the rear side member 3 and the rear side member extension 4. One end 7a of the reinforcement member 7 is provided at a joint part W1 between the rear side member 3 and the rear side member extension 4 and is located below the side members 3, 4 at the joint part W1. The other end 7b extends from the joint part W1 in a vehicle fore and aft direction along the rear side member extension 4, is disposed at the rear side relative to a position intersecting with an extension line of a joint part W2 between a rear wheel house 5 and a rear floor side extension 6, and is located above the rear side member extension 4 at a position overlapping with a joint part W3 between the rear floor side extension 6 and the rear side member extension 4. An inclined part 73 is located at an intermediate part of the reinforcement member 7 in the fore and aft direction.SELECTED DRAWING: Figure 2

Description

本発明は、車両後部の構造に関する。   The present invention relates to a structure of a rear part of a vehicle.

車両側部に配置されるサイドメンバには、部品共通化、成形性、周辺部品との配置関係等の理由から、接合部や段差部が設けられていることがある。そのため、衝突時に衝撃荷重が車両前方もしくは車両後方からサイドメンバに入力された場合に、当該部分がサイドメンバの折れや破断の起点となるおそれがあった。
そこで、従来の構造の中には、車両骨格部材であるサイドメンバの閉断面内に固設される樹脂製の補強部材や鋼板製の荷重伝達部材などを有し、これら補強部材や荷重伝達部材などをサイドメンバの屈曲部に設けることにより、サイドメンバなどに衝撃荷重が入力されて塑性変形する際の車両骨格部材の変形モードを制御するとともに、当該荷重に対する反力を高めて、車両骨格部材の変形を抑制するようにしているものがある（例えば、特許文献１参照）。 The side member disposed on the side of the vehicle may be provided with a joint portion or a step portion for reasons such as component commonality, formability, and positional relationship with peripheral components. Therefore, when an impact load is input to the side member from the front or rear of the vehicle at the time of a collision, there is a possibility that the portion becomes a starting point of the side member fold or break.
Therefore, in the conventional structure, there are a resin reinforcing member or a steel plate load transmitting member fixed in the closed cross section of the side member which is a vehicle skeleton member, and these reinforcing members and load transmitting members. Is provided at the bent portion of the side member to control the deformation mode of the vehicle skeleton member when an impact load is input to the side member or the like and plastically deform, and to increase the reaction force against the load, There is one that suppresses the deformation of (see, for example, Patent Document 1).

特開２０１０−６４６９８号公報JP 2010-64698 A

しかしながら、上述した従来の構造は、補強部材がサイドメンバの閉断面内に発泡部材によって結合されており、該発泡部材は、閉断面内におけるサイドメンバの側壁部と補強部材の側壁部との間に配置されているとともに、補強部材の上壁部とフロアパネルに接合される荷重伝達部材との間に配置されているので、使用する部品点数が多く、構造が複雑になるとともに、組付作業も煩雑になり、コスト高を招くおそれがあった。   However, in the conventional structure described above, the reinforcing member is coupled by the foam member within the closed cross section of the side member, and the foam member is disposed between the side wall portion of the side member and the side wall portion of the reinforcing member within the closed cross section. Is placed between the upper wall of the reinforcing member and the load transmission member joined to the floor panel, so there are many parts to use, the structure becomes complicated, and the assembly work However, there is a risk that the cost becomes high.

本発明はこのような実状に鑑みてなされたものであって、その目的は、後突時の荷重入力により、接合部を有するリヤサイドメンバが折れたり破断したりするのを防ぎ、部品点数及び組付工数を削減し、コストを低減しながら、リヤサイドメンバの変形方向をコントロールし、車体の変形を最小限に抑えることが可能な車両後部の構造を提供することにある。   The present invention has been made in view of such a situation, and an object of the present invention is to prevent the rear side member having a joint from being broken or broken by a load input at the time of rear collision, and to reduce the number of parts and the assembly. An object of the present invention is to provide a vehicle rear structure capable of controlling the deformation direction of the rear side member and minimizing the deformation of the vehicle body while reducing the man-hours and reducing the cost.

上記従来技術の有する課題を解決するために、本発明は、車両側部に配置され、車両前後方向に沿って延びるリヤサイドメンバと、該リヤサイドメンバの後端に接合され、前記リヤサイドメンバの後端からさらに車両後方へ延びるリヤサイドメンバエクステンションを有し、前記リヤサイドメンバの車両外側にはリヤホイールハウスが接合されて配置され、該リヤホイールハウスの車両後方側にはリヤフロアサイドエクステンションが接合されて配置されているとともに、該リヤフロアサイドエクステンションが前記リヤサイドメンバエクステンションの車両外側に接合されて配置されている車両後部の構造において、前記リヤサイドメンバ及び前記リヤサイドメンバエクステンションは、断面Ｕ字状を有し、前記リヤサイドメンバ及び前記リヤサイドメンバエクステンションの内部には、前記リヤサイドメンバ及び前記リヤサイドメンバエクステンションの断面形状に対応した断面Ｕ字状を有する補強部材が配置され、前記補強部材の一端は、前記リヤサイドメンバと前記リヤサイドメンバエクステンションとの接合部に設けられ、かつ前記リヤサイドメンバと前記リヤサイドメンバエクステンションとの接合部で、前記リヤサイドメンバ及び前記リヤサイドメンバエクステンションの下部に位置し、前記補強部材の他端は、前記リヤサイドメンバと前記リヤサイドメンバエクステンションとの接合部から前記リヤサイドメンバエクステンションに沿って車両前後方向に延び、前記リヤホイールハウスと前記リヤフロアサイドエクステンションとの接合部の延長線上と交差する位置よりもさらに車両後方に配置されているとともに、前記リヤフロアサイドエクステンションと前記リヤサイドメンバエクステンションとの接合部に重なる位置で、前記リヤサイドメンバエクステンションの上部に位置し、前記補強部材の車両前後方向の中間部分には、車両上下方向に傾斜する傾斜部が設けられている。   In order to solve the above-described problems of the prior art, the present invention provides a rear side member that is disposed on a vehicle side and extends along the vehicle front-rear direction, and is joined to the rear end of the rear side member, A rear side member extension that extends further to the rear of the vehicle. A rear wheel house is joined to the outside of the rear side member and a rear floor side extension is joined to the rear side of the rear wheel house. And the rear floor side extension is connected to the vehicle outer side of the rear side member extension. The rear side member and the rear side member extension have a U-shaped cross section, and the rear side member Members and said A reinforcement member having a U-shaped cross section corresponding to the cross-sectional shape of the rear side member and the rear side member extension is disposed inside the rear side member extension, and one end of the reinforcement member has the rear side member and the rear side member extension. At the joint between the rear side member and the rear side member extension, and located at the lower part of the rear side member and the rear side member extension. The other end of the reinforcing member is connected to the rear side member and the rear side member. A position extending from the joint portion with the rear side member extension along the rear side member extension in the vehicle front-rear direction and intersecting an extension line of the joint portion between the rear wheel house and the rear floor side extension. Is located further to the rear of the vehicle than the rear floor member extension, and is positioned above the rear side member extension at a position overlapping the joint between the rear floor side extension and the rear side member extension. Is provided with an inclined portion that is inclined in the vehicle vertical direction.

上述の如く、本発明に係る車両後部の構造は、車両側部に配置され、車両前後方向に沿って延びるリヤサイドメンバと、該リヤサイドメンバの後端に接合され、前記リヤサイドメンバの後端からさらに車両後方へ延びるリヤサイドメンバエクステンションを有し、前記リヤサイドメンバの車両外側にはリヤホイールハウスが接合されて配置され、該リヤホイールハウスの車両後方側にはリヤフロアサイドエクステンションが接合されて配置されているとともに、該リヤフロアサイドエクステンションが前記リヤサイドメンバエクステンションの車両外側に接合されて配置されており、前記リヤサイドメンバ及び前記リヤサイドメンバエクステンションは、断面Ｕ字状を有し、前記リヤサイドメンバ及び前記リヤサイドメンバエクステンションの内部には、前記リヤサイドメンバ及び前記リヤサイドメンバエクステンションの断面形状に対応した断面Ｕ字状を有する補強部材が配置され、前記補強部材の一端は、前記リヤサイドメンバと前記リヤサイドメンバエクステンションとの接合部に設けられ、かつ前記リヤサイドメンバと前記リヤサイドメンバエクステンションとの接合部で、前記リヤサイドメンバ及び前記リヤサイドメンバエクステンションの下部に位置し、前記補強部材の他端は、前記リヤサイドメンバと前記リヤサイドメンバエクステンションとの接合部から前記リヤサイドメンバエクステンションに沿って車両前後方向に延び、前記リヤホイールハウスと前記リヤフロアサイドエクステンションとの接合部の延長線上と交差する位置よりもさらに車両後方に配置されているとともに、前記リヤフロアサイドエクステンションと前記リヤサイドメンバエクステンションとの接合部に重なる位置で、前記リヤサイドメンバエクステンションの上部に位置し、前記補強部材の車両前後方向の中間部分には、車両上下方向に傾斜する傾斜部が設けられている。
したがって、本発明の車両後部の構造においては、リヤサイドメンバとリヤサイドメンバエクステンションとの接合部が断面に沿って配置した補強部材で補強されているので、後突時の荷重入力による接合部での折れや破断を防止し、車体の変形を最低限に抑えることができる。しかも、補強部材の他端がリヤホイールハウスとリヤフロアサイドエクステンションとの接合部の延長線上と交差する位置よりもさらに車両後方に配置されているので、リヤホイールハウスの方がリヤフロアサイドエクステンションよりも高い剛性を有している状態で、車両後方からの荷重がリヤホイールハウスとリヤフロアサイドエクステンションとの接合部に沿ってリヤサイドメンバエクステンションに入力された場合に、リヤフロアサイドエクステンションの横方向の変形が発生する可能性を低減させることができ、リヤサイドメンバ及びリヤサイドメンバエクステンションの想定外の変形を防ぎ、これらサイドメンバの変形方向などをコントロールでき、車体の変形を最低限に抑えることができる。 As described above, the structure of the rear portion of the vehicle according to the present invention is arranged on the side of the vehicle and extends along the vehicle front-rear direction, joined to the rear end of the rear side member, and further from the rear end of the rear side member. A rear side member extension extending rearward of the vehicle is provided. A rear wheel house is joined to the outer side of the rear side member, and a rear floor side extension is joined to the rear side of the rear wheel house. In addition, the rear floor side extension is disposed to be joined to the vehicle outer side of the rear side member extension, and the rear side member and the rear side member extension have a U-shaped cross section, and the rear side member and the rear side member extension A reinforcing member having a U-shaped cross section corresponding to the cross sectional shapes of the rear side member and the rear side member extension is disposed inside, and one end of the reinforcing member is connected to a joint portion between the rear side member and the rear side member extension. Provided at a joint between the rear side member and the rear side member extension, and located at a lower portion of the rear side member and the rear side member extension, and the other end of the reinforcing member is formed between the rear side member and the rear side member extension. It extends in the vehicle front-rear direction along the rear side member extension from the joint, and is disposed further to the rear of the vehicle than the position intersecting the extension line of the joint between the rear wheel house and the rear floor side extension. And located at the upper part of the rear side member extension at a position overlapping the joint between the rear floor side extension and the rear side member extension, and an intermediate portion of the reinforcing member in the vehicle longitudinal direction is inclined in the vehicle vertical direction. An inclined portion is provided.
Therefore, in the structure of the rear portion of the vehicle according to the present invention, the joint portion between the rear side member and the rear side member extension is reinforced by the reinforcing member disposed along the cross section, and therefore, the folding at the joint portion due to the load input at the time of rear collision is performed. And breakage can be prevented, and deformation of the vehicle body can be minimized. Moreover, since the other end of the reinforcing member is arranged further to the rear of the vehicle than the position where the other end of the reinforcing wheel intersects the extension line of the joint between the rear wheel house and the rear floor side extension, the rear wheel house is higher than the rear floor side extension. When the load from the rear of the vehicle is input to the rear side member extension along the joint between the rear wheel house and the rear floor side extension in the rigid state, the lateral deformation of the rear floor side extension occurs. The possibility can be reduced, unexpected deformation of the rear side member and the rear side member extension can be prevented, the deformation direction of these side members can be controlled, and the deformation of the vehicle body can be minimized.

また、本発明の車両後部の構造では、２箇所の補強が一部品の補強部材により行われているので、部品点数及び組付作業工数を削減でき、コストダウンを図ることができる。仮に、２箇所の補強が二部品の補強部材により行われた場合、補強部材間の強度の低い箇所が折れや破断の起点となるおそれもあり、使用する補強部材が一部品とすることで、このような問題の発生を回避することができる。
さらに、本発明の車両後部の構造では、補強部材の車両前後方向の中間部分に設けられた傾斜部を有しているので、リヤサイドメンバ及びリヤサイドメンバエクステンションの断面を塞ぐ構造を設けることが可能になり、リヤサイドメンバ及びリヤサイドメンバエクステンションの捩じり剛性を向上させることができる。 Further, in the structure of the rear part of the vehicle according to the present invention, since the reinforcement at two places is performed by a single reinforcing member, the number of parts and the number of assembling operations can be reduced, and the cost can be reduced. Temporarily, when the reinforcement of two places is performed by the reinforcement member of two parts, there is a possibility that the low strength part between the reinforcement members may be a starting point of breakage or breakage. The occurrence of such a problem can be avoided.
Furthermore, since the structure of the rear part of the vehicle according to the present invention has the inclined portion provided in the middle part of the reinforcing member in the vehicle front-rear direction, it is possible to provide a structure for closing the cross section of the rear side member and the rear side member extension. Thus, the torsional rigidity of the rear side member and the rear side member extension can be improved.

本発明の実施形態に係る構造が適用される車両後部を車両後方側の斜め上方から示す斜視図である。1 is a perspective view showing a rear part of a vehicle to which a structure according to an embodiment of the present invention is applied from an obliquely upper side on the vehicle rear side. 図１におけるＺ部を拡大して示す斜視図である。It is a perspective view which expands and shows the Z section in FIG. 図１の車両後部を車両上方から見た平面図である。It is the top view which looked at the vehicle rear part of FIG. 1 from the vehicle upper direction. 図２におけるＡ−Ａ線断面図である。It is the sectional view on the AA line in FIG.

以下、本発明を図示の実施の形態に基づいて詳細に説明する。
図１〜図４は本発明の実施形態に係る車両後部の構造を示すものである。なお、図において、矢印Ｆｒ方向は車両前方を示し、矢印Ｏ方向は車両外方を示し、矢印Ｕ方向は車両上方を示している。また、矢印Ｘ方向は車両幅方向を示し、矢印Ｙ方向は車両前後方向を示している。 Hereinafter, the present invention will be described in detail based on illustrated embodiments.
1 to 4 show a structure of a vehicle rear portion according to an embodiment of the present invention. In the figure, the arrow Fr direction indicates the front of the vehicle, the arrow O direction indicates the vehicle exterior, and the arrow U direction indicates the vehicle upper direction. The arrow X direction indicates the vehicle width direction, and the arrow Y direction indicates the vehicle front-rear direction.

図１〜図４に示すように、本発明の実施形態に係る構造が適用される車両後部１には、床面を形成するリヤフロアパネル２が設けられており、該リヤフロアパネル２の車両幅方向側部には、車両前後方向に沿って延びるリヤサイドメンバ３、リヤサイドメンバエクステンション４、リヤホイールハウス５、リヤフロアサイドエクステンション６などが配置されている。リヤホイールハウス５は、リヤフロアパネル２などに比べて高い剛性及び強度を有している。
リヤサイドメンバ３の車両前後方向の後端には、車両前後方向に沿って延びるリヤサイドメンバエクステンション４が接合されており、該リヤサイドメンバエクステンション４は、リヤサイドメンバ３の後端からさらに車両後方へ延びている。
また、リヤサイドメンバ３の車両外側には、車両内側へ向かって湾曲したアーチ形状を有するリヤホイールハウス５のホイールハウスインナパネル５１が接合されて配置されており、該ホイールハウスインナパネル５１の車両後方側には、リヤフロアサイドエクステンション６が接合されて配置されている。このリヤフロアサイドエクステンション６は、ホイールハウスインナパネル５１とバックパネル１１との間に設けられており、リヤサイドメンバエクステンション４の車両外側に接合されて配置されている。すなわち、リヤフロアサイドエクステンション６は、リヤフロアパネル２の車両外側に位置し、車両後方へ向かって延びており、リヤオーバーハングが長い車体等において設けられている。 As shown in FIGS. 1 to 4, a vehicle rear portion 1 to which a structure according to an embodiment of the present invention is applied is provided with a rear floor panel 2 that forms a floor surface. A rear side member 3, a rear side member extension 4, a rear wheel house 5, a rear floor side extension 6, and the like that extend along the vehicle front-rear direction are disposed on the side portions. The rear wheel house 5 has higher rigidity and strength than the rear floor panel 2 and the like.
A rear side member extension 4 extending along the vehicle front-rear direction is joined to the rear end of the rear side member 3 in the vehicle front-rear direction. The rear side member extension 4 extends further from the rear end of the rear side member 3 toward the rear of the vehicle. Yes.
Further, a wheel house inner panel 51 of the rear wheel house 5 having an arch shape curved toward the vehicle inner side is joined and arranged on the vehicle outer side of the rear side member 3, and the wheel house inner panel 51 is rearward of the vehicle. The rear floor side extension 6 is joined and arranged on the side. The rear floor side extension 6 is provided between the wheel house inner panel 51 and the back panel 11, and is disposed so as to be joined to the vehicle outer side of the rear side member extension 4. That is, the rear floor side extension 6 is located on the vehicle outer side of the rear floor panel 2, extends toward the rear of the vehicle, and is provided in a vehicle body or the like having a long rear overhang.

本実施形態のリヤサイドメンバ３及びリヤサイドメンバエクステンション４は、図１〜図４に示すように、車両後方視で上部が開口した断面Ｕ字状を有しており、それぞれが左右側面３ａ，４ａと底面３ｂ，４ｂを備えている。そして、リヤサイドメンバ３及びリヤサイドメンバエクステンション４は、左右側面３ａ，４ａの上端部を外側へ直角に折り曲げたフランジ部３ｃ，４ｃを有しており、これらフランジ部３ｃ，４ｃをリヤフロアパネル２の下面に接合することによって、リヤフロアパネル２の車両側部に取付けられている。 1 to 4, the rear side member 3 and the rear side member extension 4 of the present embodiment have a U-shaped cross section with an upper portion opened in the rear view of the vehicle, and each has left and right side surfaces 3a and 4a. Bottom surfaces 3b and 4b are provided. The rear side member 3 and the rear side member extension 4 have flange portions 3c and 4c obtained by bending the upper end portions of the left and right side surfaces 3a and 4a to the outside at right angles, and these flange portions 3c and 4c are connected to the lower surface of the rear floor panel 2. Is attached to the vehicle side portion of the rear floor panel 2.

一方、本実施形態の車両後部１の構造において、リヤサイドメンバエクステンション４の内部には、図１〜図４に示すように、長手方向が車両前後方向である補強部材７が配置されている。この補強部材７は、車両幅方向に所定の幅を有し、車両前後方向に所定の長さを有するとともに、車両上下方向に所定の高さを有している。しかも、補強部材７は、リヤサイドメンバ３及びリヤサイドメンバエクステンション４の断面形状に対応した断面Ｕ字状を有しており、リヤサイドメンバ３とリヤサイドメンバエクステンション４との接合部Ｗ１の周囲を断面形状に沿って補強するように構成されている。 On the other hand, in the structure of the vehicle rear portion 1 according to the present embodiment, a reinforcing member 7 whose longitudinal direction is the vehicle front-rear direction is arranged inside the rear side member extension 4 as shown in FIGS. The reinforcing member 7 has a predetermined width in the vehicle width direction, a predetermined length in the vehicle front-rear direction, and a predetermined height in the vehicle vertical direction. In addition, the reinforcing member 7 has a U-shaped cross section corresponding to the cross-sectional shapes of the rear side member 3 and the rear side member extension 4, and the periphery of the joint portion W1 between the rear side member 3 and the rear side member extension 4 has a cross-sectional shape. It is configured to reinforce along.

そのため、補強部材７の車両前方側に位置する一端７ａは、図２〜図４に示すように、リヤサイドメンバ３とリヤサイドメンバエクステンション４との接合部Ｗ１に重なるように設けられ、かつ当該接合部Ｗ１でリヤサイドメンバエクステンション４の下部に位置し、底面４ｂなどに接合されている。
また、補強部材７の車両後方側に位置する他端７ｂは、リヤサイドメンバ３とリヤサイドメンバエクステンション４との接合部Ｗ１からリヤサイドメンバエクステンション４に沿って車両前後方向に沿って延び、リヤホイールハウス５のホイールハウスインナパネル５１とリヤフロアサイドエクステンション６との接合部Ｗ２の延長線Ｂ上と交差する位置よりもさらに車両後方に配置されている。ホイールハウスインナパネル５１とリヤフロアサイドエクステンション６との接合部Ｗ２は、車両内側に位置するほど車両前方に向かうような傾斜線状に配置されている。しかも、補強部材７の他端７ｂは、リヤフロアサイドエクステンション６とリヤサイドメンバエクステンション４との接合部Ｗ３に重なる位置で、リヤサイドメンバエクステンション４の上部に位置している。
さらに、補強部材７の車両前後方向の中間部分には、車両上下方向に傾斜し、前部７１と後部７２とをつなぐ傾斜部７３が設けられており、該傾斜部７３の高さ位置は、車両前方側よりも車両後方側が高くなるように設定されている。そして、傾斜部７３の車両前方側及び車両後方側に位置する補強部材７の前部７１及び後部７２の底面は、リヤサイドメンバエクステンション４の底面４ｂと平行な略平坦面形状に形成されている。 Therefore, the one end 7a located on the vehicle front side of the reinforcing member 7 is provided so as to overlap the joint W1 between the rear side member 3 and the rear side member extension 4, as shown in FIGS. W1 is positioned below the rear side member extension 4 and is joined to the bottom surface 4b and the like.
The other end 7b of the reinforcing member 7 located on the vehicle rear side extends along the vehicle front-rear direction along the rear side member extension 4 from the joint portion W1 between the rear side member 3 and the rear side member extension 4, and the rear wheel house 5 The wheel house inner panel 51 and the rear floor side extension 6 are disposed further to the rear of the vehicle than the position intersecting the extension line B of the joint W2. The joint portion W2 between the wheel house inner panel 51 and the rear floor side extension 6 is arranged in an inclined line shape so as to be closer to the front of the vehicle as it is located on the inner side of the vehicle. In addition, the other end 7 b of the reinforcing member 7 is positioned above the rear side member extension 4 at a position overlapping the joint portion W 3 between the rear floor side extension 6 and the rear side member extension 4.
Further, an inclined portion 73 that is inclined in the vehicle vertical direction and connects the front portion 71 and the rear portion 72 is provided at an intermediate portion of the reinforcing member 7 in the vehicle front-rear direction, and the height position of the inclined portion 73 is The vehicle rear side is set higher than the vehicle front side. The bottom surfaces of the front portion 71 and the rear portion 72 of the reinforcing member 7 located on the vehicle front side and vehicle rear side of the inclined portion 73 are formed in a substantially flat surface shape parallel to the bottom surface 4 b of the rear side member extension 4.

また、本実施形態の車両後部１の構造において、リヤサイドメンバ３とリヤサイドメンバエクステンション４との接合部Ｗ１は、図２及び図３に示すように、リヤホイールハウス５のホイールハウスインナパネル５１とリヤフロアサイドエクステンション６との接合部Ｗ２よりも車両前方に位置している。しかも、これら２つの接合部Ｗ１，Ｗ２の間の範囲Ｒに位置する補強部材７の傾斜部７３は、後ろ上がりの傾斜形状に形成されている。さらに、補強部材７は、リヤサイドメンバエクステンション４の内部において、車両前方側の前部７１が下部に位置し、車両後方側の後部７２が上部に位置するように形成されている。そして、補強部材７の前部７１は、リヤサイドメンバエクステンション４の左右側面４ａ及び底面４ｂに接合され、補強部材７の後部７２は、リヤサイドメンバエクステンション４の左右側面４ａに接合されている。そのため、補強部材７の傾斜部７３よりも車両後方側のリヤサイドメンバエクステンション４の下部強度は、当該傾斜部７３よりも車両前方側のリヤサイドメンバエクステンション４の下部強度よりも相対的に低くなっている。 Further, in the structure of the vehicle rear portion 1 of the present embodiment, the joint portion W1 between the rear side member 3 and the rear side member extension 4 is provided with a wheel house inner panel 51 of the rear wheel house 5 and a rear floor as shown in FIGS. It is located in front of the vehicle relative to the joint W2 with the side extension 6. Moreover, the inclined portion 73 of the reinforcing member 7 located in the range R between the two joint portions W1 and W2 is formed in an upwardly inclined shape. Further, the reinforcing member 7 is formed in the rear side member extension 4 such that the front part 71 on the vehicle front side is located at the lower part and the rear part 72 on the vehicle rear side is located at the upper part. The front portion 71 of the reinforcing member 7 is joined to the left and right side surfaces 4 a and the bottom surface 4 b of the rear side member extension 4, and the rear portion 72 of the reinforcing member 7 is joined to the left and right side surfaces 4 a of the rear side member extension 4. Therefore, the lower strength of the rear side member extension 4 on the rear side of the vehicle with respect to the inclined portion 73 of the reinforcing member 7 is relatively lower than the lower strength of the rear side member extension 4 on the front side of the vehicle with respect to the inclined portion 73. .

また、リヤサイドメンバ３とリヤサイドメンバエクステンション４との接合部Ｗ１は、図２及び図４に示すように、リヤホイールハウス５に設けられたリヤショックアブソーバ取付部８の下方に配置されている。そのため、リヤホイールハウス５の車両前後方向中央部の車室内側には、ホイールハウスインナパネル５１の上部から車室内側へ向かって下り傾斜で所定の長さにわたり延びるリヤホイールハウスセンタリンフォース５２が接合されて配置されている。また、リヤホイールハウスセンタリンフォース５２の上部の車室内側には、車両上下方向に延びるリヤピラーインナリンフォース９が接合されて配置されている。
そして、これらリヤホイールハウスセンタリンフォース５２及びリヤピラーインナリンフォース９の上下中間部の開口した部分には、走行する車両の振動などを減衰させるためのリヤサスペンション（図示せず）を取付けるリヤショックアブソーバ取付部８が設けられている。このリヤショックアブソーバ取付部８は、リヤサスペンション（図示せず）の上部を挿入する孔を備えたリヤショックアブソーバステフナー８１及びリヤショックアブソーバブラケット８２を有している。 Further, the joint W1 between the rear side member 3 and the rear side member extension 4 is disposed below the rear shock absorber mounting portion 8 provided in the rear wheel house 5, as shown in FIGS. Therefore, a rear wheel house center reinforcement 52 extending downward from the upper part of the wheel house inner panel 51 toward the vehicle interior side over a predetermined length is provided on the vehicle interior side in the vehicle longitudinal direction central portion of the rear wheel house 5. They are joined and arranged. Further, a rear pillar inner reinforcement 9 extending in the vehicle vertical direction is joined and disposed on the vehicle interior side above the rear wheel house center reinforcement 52.
A rear shock absorber for attaching a rear suspension (not shown) for attenuating vibration of a traveling vehicle and the like to the opened portions of the upper and lower intermediate portions of the rear wheel house centerline force 52 and the rear pillar innerline force 9. A mounting portion 8 is provided. The rear shock absorber mounting portion 8 includes a rear shock absorber stiffener 81 and a rear shock absorber bracket 82 provided with a hole for inserting an upper portion of a rear suspension (not shown).

一方、補強部材７の傾斜部７３は、図２〜図４に示すように、リヤショックアブソーバ取付部８の車両後方側に設けられた縦壁１０の車両上下方向に延びる稜線１０Ａの下方に配置されている。この縦壁１０は、リヤホイールハウスセンタリンフォース５２及びリヤピラーインナリンフォース９の前後中間部を車室内側へ向かって起立させることにより連続して形成され、稜線１０Ａは、縦壁１０の車室内側角部に沿って形成されている。しかも、補強部材７の一端７ａは、リヤショックアブソーバ取付部８と車両前後方向で並ぶような位置に設けられている。 On the other hand, as shown in FIGS. 2 to 4, the inclined portion 73 of the reinforcing member 7 is disposed below the ridge line 10 </ b> A extending in the vehicle vertical direction of the vertical wall 10 provided on the vehicle rear side of the rear shock absorber mounting portion 8. Has been. The vertical wall 10 is continuously formed by raising the front and rear intermediate portions of the rear wheel house centerline force 52 and the rear pillar innerline force 9 toward the vehicle interior side. It is formed along the inner corner. Moreover, one end 7a of the reinforcing member 7 is provided at a position aligned with the rear shock absorber mounting portion 8 in the vehicle front-rear direction.

このように、本発明の実施形態に係る車両後部１の構造においては、車両前後方向に沿って延びる断面Ｕ字状のリヤサイドメンバ３とリヤサイドメンバエクステンション４との接合部Ｗ１が、内部に配置され、これらサイドメンバ３，４と対応した断面形状を有する断面Ｕ字状の補強部材７により補強されているので、後突時の荷重入力による接合部Ｗ１での横折れや破断を防止し、車体の変形を低減させることができる。
また、本実施形態の車両後部１の構造においては、補強部材７の一端７ａが、リヤサイドメンバとリヤサイドメンバエクステンション４との接合部Ｗ１に設けられ、この接合部Ｗ１で、当該リヤサイドメンバ３，４の下部に位置している。そして、補強部材７の他端７ｂは、リヤサイドメンバ３の車両外側に接合されたリヤホイールハウス５と、リヤサイドメンバエクステンション４の車両外側に接合されたリヤフロアサイドエクステンション６との接合部Ｗ２の延長線Ｂ上と交差する位置よりもさらに車両後方に配置されているとともに、リヤフロアサイドエクステンション６とリヤサイドメンバエクステンション４との接合部Ｗ３に重なる位置で、リヤサイドメンバエクステンション４の上部に位置している。そのため、リヤホイールハウス５の方がリヤフロアサイドエクステンション６よりも剛性が高くなり、車両後方からの荷重がリヤホイールハウス５とリヤフロアサイドエクステンション６との接合部Ｗ２に沿ってリヤサイドメンバエクステンション４に入力した場合でも、リヤサイドメンバエクステンション４の横方向の変形を低減させることができる。しかも、リヤサイドメンバ３及びリヤサイドメンバエクステンション４の変形方向をコントロールでき、想定外の変形を防止することができる。
さらに、本実施形態の車両後部１の構造においては、一部品である補強部材７によって接合部Ｗ１や接合部Ｗ２の延長線Ｂ上と交差する位置が補強されているので、コストダウンに結び付く部品点数の削減や組付作業工数の削減を行うことができる。それに加えて、補強部材７の車両前後方向の中間部分には、車両上下方向に傾斜する傾斜部７３が設けられているので、リヤサイドメンバ３及びリヤサイドメンバエクステンション４の断面を塞ぐ構造を設けることが可能になり、リヤサイドメンバ３及びリヤサイドメンバエクステンション４の捩じり剛性を高めることができる。 As described above, in the structure of the vehicle rear portion 1 according to the embodiment of the present invention, the joint portion W1 between the rear side member 3 and the rear side member extension 4 having a U-shaped cross section extending along the vehicle front-rear direction is disposed inside. Since the reinforcing member 7 having a U-shaped cross section corresponding to the side members 3 and 4 is reinforced, it prevents lateral folding and breakage at the joint W1 due to load input at the time of rear collision. Can be reduced.
Further, in the structure of the vehicle rear portion 1 according to the present embodiment, one end 7a of the reinforcing member 7 is provided at the joint portion W1 between the rear side member and the rear side member extension 4, and the rear side members 3 and 4 are connected to the joint portion W1. Located at the bottom of. The other end 7b of the reinforcing member 7 is an extension line of the joint portion W2 between the rear wheel house 5 joined to the vehicle outer side of the rear side member 3 and the rear floor side extension 6 joined to the vehicle outer side of the rear side member extension 4. It is disposed further to the rear of the vehicle than the position crossing B, and is positioned above the rear side member extension 4 at a position overlapping the joint W3 between the rear floor side extension 6 and the rear side member extension 4. Therefore, the rear wheel house 5 is more rigid than the rear floor side extension 6, and the load from the rear of the vehicle is input to the rear side member extension 4 along the joint W2 between the rear wheel house 5 and the rear floor side extension 6. Even in this case, the lateral deformation of the rear side member extension 4 can be reduced. Moreover, the deformation direction of the rear side member 3 and the rear side member extension 4 can be controlled, and unexpected deformation can be prevented.
Furthermore, in the structure of the vehicle rear portion 1 according to the present embodiment, since the position intersecting the extension line B of the joint portion W1 and the joint portion W2 is reinforced by the reinforcing member 7 which is a single component, the component leads to cost reduction. The number of points and assembly work man-hours can be reduced. In addition, since an inclined portion 73 that is inclined in the vehicle vertical direction is provided in the middle portion of the reinforcing member 7 in the vehicle longitudinal direction, a structure for closing the cross section of the rear side member 3 and the rear side member extension 4 can be provided. Thus, the torsional rigidity of the rear side member 3 and the rear side member extension 4 can be increased.

また、本実施形態の車両後部１の構造において、リヤサイドメンバ３とリヤサイドメンバエクステンション４との接合部Ｗ１は、リヤホイールハウス５とリヤフロアサイドエクステンション６との接合部Ｗ２よりも車両前方に位置し、これら２つの接合部Ｗ１，Ｗ２の間に位置する補強部材７の傾斜部７３は、後ろ上がりの傾斜形状に形成され、補強部材７は、リヤサイドメンバエクステンション４の内部において、車両前方側が下部に位置し、車両後方側が上部に位置するように形成されている。そのため、本実施形態の車両後部１の構造によれば、補強部材７の傾斜部７３よりも車両後方側に位置するリヤサイドメンバエクステンション４の下部強度を当該傾斜部７３よりも車両前方側に位置するリヤサイドメンバエクステンション４の下部強度を相対的に低くすることができる。したがって、後面衝突時の衝撃荷重が車両後部１のリヤサイドメンバエクステンション４に加わった場合に、リヤサイドメンバエクステンション４が接合部Ｗ１の車両後方側を起点にして山折りに変形させることができ、当該接合部Ｗ１での破断を防ぎ、車室内への被害を低減させつつ、衝撃荷重を効果的に吸収することができる。 Further, in the structure of the vehicle rear portion 1 of the present embodiment, the joint portion W1 between the rear side member 3 and the rear side member extension 4 is located in front of the vehicle with respect to the joint portion W2 between the rear wheel house 5 and the rear floor side extension 6, The inclined portion 73 of the reinforcing member 7 located between the two joint portions W1 and W2 is formed in an upwardly inclined shape, and the reinforcing member 7 is located in the rear side member extension 4 with the front side of the vehicle positioned below. However, the rear side of the vehicle is formed at the upper part. Therefore, according to the structure of the vehicle rear portion 1 of the present embodiment, the lower strength of the rear side member extension 4 positioned on the vehicle rear side of the inclined portion 73 of the reinforcing member 7 is positioned on the vehicle front side of the inclined portion 73. The lower strength of the rear side member extension 4 can be relatively lowered. Therefore, when an impact load at the time of a rear collision is applied to the rear side member extension 4 of the vehicle rear portion 1, the rear side member extension 4 can be deformed into a mountain fold starting from the vehicle rear side of the joint portion W1. It is possible to effectively absorb the impact load while preventing breakage at the portion W1 and reducing damage to the passenger compartment.

さらに、本実施形態の車両後部１の構造において、リヤサイドメンバ３とリヤサイドメンバエクステンション４との接合部Ｗ１は、リヤホイールハウス５に設けられたリヤショックアブソーバ取付部８の下方に配置され、補強部材７の傾斜部７３は、リヤショックアブソーバ取付部８の車両後方側に設けられた縦壁１０の車両上下方向に延びる稜線１０Ａの下方に配置されている。したがって、本実施形態の車両後部１の構造によれば、リヤサスペンションからの振動などがリヤショックアブソーバ取付部８に入力される際に、リヤホイールハウス５のリヤホイールハウスセンタリンフォース５２やリヤピラーインナリンフォース９の車両下方に位置するリヤサイドメンバ３及びリヤサイドメンバエクステンション４を効果的に補強でき、車両走行時の車体への入力に対する車体の剛性を向上させることができる。 Furthermore, in the structure of the vehicle rear portion 1 of the present embodiment, the joint portion W1 between the rear side member 3 and the rear side member extension 4 is disposed below the rear shock absorber mounting portion 8 provided in the rear wheel house 5, and is a reinforcing member. 7 is disposed below a ridge line 10A extending in the vehicle vertical direction of the vertical wall 10 provided on the vehicle rear side of the rear shock absorber mounting portion 8. Therefore, according to the structure of the vehicle rear portion 1 of this embodiment, when vibration from the rear suspension is input to the rear shock absorber mounting portion 8, the rear wheel house center reinforcement 52 and the rear pillar inner of the rear wheel house 5 are used. The rear side member 3 and the rear side member extension 4 located below the reinforcement 9 in the vehicle can be effectively reinforced, and the rigidity of the vehicle body against the input to the vehicle body when the vehicle is traveling can be improved.

以上、本発明の実施の形態につき述べたが、本発明は既述の実施の形態に限定されるものではなく、本発明の技術的思想に基づいて各種の変形及び変更が可能である。   While the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications and changes can be made based on the technical idea of the present invention.

１ 車両後部
２ リヤフロアパネル
３ リヤサイドメンバ
４ リヤサイドメンバエクステンション
５ リヤホイールハウス
６ リヤフロアサイドエクステンション
７ 補強部材
７ａ 一端
７ｂ 他端
８ リヤショックアブソーバ取付部
９ リヤピラーインナリンフォース
１０ 縦壁
１０Ａ 稜線
５１ ホイールハウスインナパネル
５２ リヤホイールハウスセンタリンフォース
７１ 補強部材の前部
７２ 補強部材の後部
７３ 補強部材の傾斜部
８１ リヤショックアブソーバステフナー
８２ リヤショックアブソーバブラケット
Ｂ ホイールハウスインナパネルとリヤフロアサイドエクステンションとの接合部の延長線
Ｗ１ リヤサイドメンバとリヤサイドメンバエクステンションとの接合部
Ｗ２ ホイールハウスインナパネルとリヤフロアサイドエクステンションとの接合部
Ｗ３ リヤフロアサイドエクステンションとリヤサイドメンバエクステンションとの接合部 DESCRIPTION OF SYMBOLS 1 Vehicle rear part 2 Rear floor panel 3 Rear side member 4 Rear side member extension 5 Rear wheel house 6 Rear floor side extension 7 Reinforcement member 7a One end 7b Other end 8 Rear shock absorber mounting part 9 Rear pillar inner reinforcement 10 Vertical wall 10A Ridge line 51 Wheel house inner panel 52 Rear wheel house center reinforcement 71 Reinforcement member front part 72 Reinforcement member rear part 73 Reinforcement member slope part 81 Rear shock absorber stiffener 82 Rear shock absorber bracket B Extension line of joint part between wheel house inner panel and rear floor side extension W1 Joint between rear side member and rear side member extension W2 Contact between wheel house inner panel and rear floor side extension Part W3 junction of the rear floor side extension and rear side member extension

Claims (3)

車両側部に配置され、車両前後方向に沿って延びるリヤサイドメンバと、該リヤサイドメンバの後端に接合され、前記リヤサイドメンバの後端からさらに車両後方へ延びるリヤサイドメンバエクステンションを有し、
前記リヤサイドメンバの車両外側にはリヤホイールハウスが接合されて配置され、該リヤホイールハウスの車両後方側にはリヤフロアサイドエクステンションが接合されて配置されているとともに、該リヤフロアサイドエクステンションが前記リヤサイドメンバエクステンションの車両外側に接合されて配置されている車両後部の構造において、
前記リヤサイドメンバ及び前記リヤサイドメンバエクステンションは、断面Ｕ字状を有し、前記リヤサイドメンバ及び前記リヤサイドメンバエクステンションの内部には、前記リヤサイドメンバ及び前記リヤサイドメンバエクステンションの断面形状に対応した断面Ｕ字状を有する補強部材が配置され、
前記補強部材の一端は、前記リヤサイドメンバと前記リヤサイドメンバエクステンションとの接合部に設けられ、かつ前記リヤサイドメンバと前記リヤサイドメンバエクステンションとの接合部で、前記リヤサイドメンバ及び前記リヤサイドメンバエクステンションの下部に位置し、
前記補強部材の他端は、前記リヤサイドメンバと前記リヤサイドメンバエクステンションとの接合部から前記リヤサイドメンバエクステンションに沿って車両前後方向に延び、前記リヤホイールハウスと前記リヤフロアサイドエクステンションとの接合部の延長線上と交差する位置よりもさらに車両後方に配置されているとともに、前記リヤフロアサイドエクステンションと前記リヤサイドメンバエクステンションとの接合部に重なる位置で、前記リヤサイドメンバエクステンションの上部に位置し、
前記補強部材の車両前後方向の中間部分には、車両上下方向に傾斜する傾斜部が設けられていることを特徴とする車両後部の構造。 A rear side member disposed on the side of the vehicle and extending along the vehicle front-rear direction; and a rear side member extension joined to the rear end of the rear side member and extending further rearward from the rear end of the rear side member;
A rear wheel house is joined and arranged on the vehicle outer side of the rear side member, and a rear floor side extension is arranged on the vehicle rear side of the rear wheel house, and the rear floor side extension is connected to the rear side member extension. In the structure of the rear part of the vehicle that is arranged to be joined to the outside of the vehicle,
The rear side member and the rear side member extension have a U-shaped cross section, and the rear side member and the rear side member extension have a U-shaped cross section corresponding to the cross-sectional shapes of the rear side member and the rear side member extension. A reinforcing member having,
One end of the reinforcing member is provided at a joint portion between the rear side member and the rear side member extension, and is located at a lower portion of the rear side member and the rear side member extension at the joint portion between the rear side member and the rear side member extension. And
The other end of the reinforcing member extends from the joint between the rear side member and the rear side member extension in the vehicle front-rear direction along the rear side member extension, and extends on the extension line of the joint between the rear wheel house and the rear floor side extension. Is disposed further to the rear of the vehicle than the position intersecting with, and is positioned above the rear side member extension at a position overlapping the joint between the rear floor side extension and the rear side member extension,
The structure of the rear portion of the vehicle, wherein an inclined portion that is inclined in the vehicle vertical direction is provided at an intermediate portion of the reinforcing member in the vehicle longitudinal direction. 前記リヤサイドメンバと前記リヤサイドメンバエクステンションとの接合部は、前記リヤホイールハウスと前記リヤフロアサイドエクステンションとの接合部よりも車両前方に位置し、これら２つの接合部の間に位置する前記補強部材の傾斜部は、後ろ上がりの傾斜形状に形成され、
前記補強部材は、前記リヤサイドメンバエクステンションの内部において、車両前方側が下部に位置し、車両後方側が上部に位置するように形成されていることを特徴とする請求項１に記載の車両後部の構造。 The joint portion between the rear side member and the rear side member extension is located in front of the vehicle with respect to the joint portion between the rear wheel house and the rear floor side extension, and the inclination of the reinforcing member located between these two joint portions The part is formed in an inclined shape that rises backward,
The structure of the rear part of the vehicle according to claim 1, wherein the reinforcing member is formed so that the front side of the vehicle is located in the lower part and the rear side of the vehicle is located in the upper part inside the rear side member extension. 前記リヤサイドメンバと前記リヤサイドメンバエクステンションとの接合部は、前記リヤホイールハウスに設けられたリヤショックアブソーバ取付部の下方に配置されているとともに、前記補強部材の傾斜部は、前記リヤショックアブソーバ取付部の車両後方側に設けられた縦壁の車両上下方向に延びる稜線の下方に配置されていることを特徴とする請求項１または２に記載の車両後部の構造。   A joint portion between the rear side member and the rear side member extension is disposed below a rear shock absorber mounting portion provided in the rear wheel house, and an inclined portion of the reinforcing member is formed by the rear shock absorber mounting portion. The structure of the rear part of the vehicle according to claim 1 or 2, characterized in that it is disposed below a ridge line extending in the vehicle vertical direction of a vertical wall provided on the rear side of the vehicle.
JP2017063294A 2017-03-28 2017-03-28 Rear structure of the vehicle Active JP6814409B2 (en)

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JP2017063294A JP6814409B2 (en) 2017-03-28 2017-03-28 Rear structure of the vehicle
DE102017130699.4A DE102017130699B4 (en) 2017-03-28 2017-12-20 vehicle rear structure
FR1852399A FR3064582B1 (en) 2017-03-28 2018-03-21 REAR VEHICLE STRUCTURE
CN201810247868.XA CN108657289B (en) 2017-03-28 2018-03-23 Structure of vehicle rear portion

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FR3064582A1 (en) 2018-10-05
FR3064582B1 (en) 2021-04-23
DE102017130699A1 (en) 2018-10-04

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