JP2019055751A - Vehicle rear part structure - Google Patents

Vehicle rear part structure Download PDF

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JP2019055751A
JP2019055751A JP2017182538A JP2017182538A JP2019055751A JP 2019055751 A JP2019055751 A JP 2019055751A JP 2017182538 A JP2017182538 A JP 2017182538A JP 2017182538 A JP2017182538 A JP 2017182538A JP 2019055751 A JP2019055751 A JP 2019055751A
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battery
vehicle
bracket
wall portion
wheel house
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JP6822361B2 (en
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太介 里井
Taisuke Satoi
太介 里井
直矢 坂口
Naoya Sakaguchi
直矢 坂口
潤 平原
Jun Hirahara
潤 平原
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Toyota Motor Corp
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Toyota Motor Corp
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Abstract

To secure a survival space of a battery in a vehicle rear part structure even if a vehicle is subject to a rear-end collision and the survival space of the battery is narrowed by existence of a wheel house.SOLUTION: A vehicle rear part structure 10 includes: a wheel house 30; a battery 20; and a bracket 40 for receiving movement of the battery 20 caused by an impact received by a vehicle. The bracket 40 includes a long wall part formed in a longer side direction and a short wall part formed in a shorter side direction. The short wall part has a fixed surface fixed to the floor surface fixing part side of the vehicle at the same height position as a lower surface 23 of the battery 20 on the rear side of the battery 20 as seen in a vehicle fore and aft direction. The long wall part is erected from the fixed surface of the short wall part, extends while facing and spaced a predetermined distance apart from a rear wall surface 22 of the battery 20, and is fallen to the short wall part side when receiving external force exceeding a predetermined value.SELECTED DRAWING: Figure 1

Description

本開示は、車両の後部構造に係り、特に、ホイールハウスの後方側にバッテリが配置される車両の後部構造に関する。   The present disclosure relates to a rear structure of a vehicle, and more particularly to a rear structure of a vehicle in which a battery is disposed on the rear side of a wheel house.

電気自動車には、駆動源となる高電圧大出力の２次電池と共に、低電圧の補機用バッテリが搭載される。電気自動車以外の車両でも、低電圧バッテリは搭載される。これらの車載用バッテリは、車両後部に配置される場合がある。   An electric vehicle is equipped with a low-voltage auxiliary battery as well as a high-voltage, high-output secondary battery serving as a drive source. Low-voltage batteries are also installed in vehicles other than electric vehicles. These in-vehicle batteries may be disposed at the rear of the vehicle.

特許文献１には、車体後部両側のホイールハウスの間で前後方向に延在する左右のリアサイドフレームに結合される搭載ブラケットを介して搭載されるバッテリケースが述べられている。搭載ブラケットは、バッテリケース取付部の前後に、それぞれ下方に折れ曲がってリアサイドフレームに結合する前側脚部と後側脚部とを有する。車両が後突等による衝撃荷重を受けバッテリケースが慣性で前後方向に移動した場合には、前側脚部と後側脚部とが傾倒または折曲する。   Patent Document 1 describes a battery case that is mounted via mounting brackets that are coupled to left and right rear side frames that extend in the front-rear direction between wheel houses on both sides of the rear portion of the vehicle body. The mounting bracket includes a front leg and a rear leg that are bent downward and coupled to the rear side frame before and after the battery case mounting part. When the vehicle receives an impact load due to a rear collision or the like and the battery case moves in the front-rear direction due to inertia, the front leg portion and the rear leg portion tilt or bend.

特開２０１７−０１３５９３号公報JP 2017-013593 A

車両後部にバッテリを搭載する場合、その搭載空間にホイールハウスが存在することがある。ホイールハウスの後方側にバッテリを配置した場合に、車両が後突を受けると、バッテリはホイールハウスに接触し、バッテリが破損しない空間である生存空間が狭くなる可能性がある。そこで、車両が後突を受けて、ホイールハウスの存在によってバッテリの生存空間が狭くなる場合でも、バッテリの生存空間を確保できる車両の後部構造が要望される。   When a battery is mounted at the rear of the vehicle, a wheel house may exist in the mounting space. When the battery is arranged on the rear side of the wheel house and the vehicle receives a rear collision, the battery contacts the wheel house, and there is a possibility that a living space that is a space where the battery is not damaged becomes narrow. Therefore, there is a demand for a rear structure of a vehicle that can secure a battery living space even when the vehicle receives a rear collision and the battery living space becomes narrow due to the presence of the wheel house.

本開示に係る車両の後部構造は、ホイールハウスと、ホイールハウスに対し車両前後方向の後方側に離間し、且つ、ホイールハウスの車両幅方向の位置に対し車両幅方向に沿って一部重なって配置されたバッテリと、車両が受ける衝撃によって生じたバッテリの移動を受け止めるためのブラケットと、を備え、ブラケットは、長手方向の長壁部と短手方向の短壁部とを含み、短壁部は、バッテリに対し車両前後方向の後方側で、バッテリ下部面と同じ高さ位置において車両の床面固定部側に固定される固定面を有し、長壁部は、短壁部の固定面から立設しバッテリの後部壁面に対し所定の間隔を空けて向かい合って延び、所定値を超える外力を受けて短壁部側に倒れた状態となる。   The rear structure of the vehicle according to the present disclosure is separated to the rear side in the vehicle front-rear direction with respect to the wheel house and the wheel house, and partially overlaps the position of the wheel house in the vehicle width direction along the vehicle width direction. And a bracket for receiving movement of the battery caused by an impact received by the vehicle, the bracket including a long wall portion in the longitudinal direction and a short wall portion in the short direction, the short wall portion being A fixing surface that is fixed to the vehicle floor surface fixing portion side at the same height position as the battery lower surface on the rear side in the vehicle longitudinal direction with respect to the battery, and the long wall portion stands from the fixing surface of the short wall portion. The battery is extended to face the rear wall surface of the battery with a predetermined interval, and falls to the short wall portion side by receiving an external force exceeding a predetermined value.

上記構成によれば、車両が後突を受けると、初期ではブラケットがバッテリの移動を受け止める。後突の終期において車両が変形し、バッテリがホイールハウスとブラケットとの間に挟まれて生存空間が無くなり、バッテリがブラケットを押す力が所定値を超えると、ブラケットの長壁部が短壁部側に倒れる。これにより、バッテリは長壁部が倒れたブラケットの上に乗り上げることができ、バッテリは、後方側に移動出来て、生存空間を確保できる。   According to the above configuration, when the vehicle receives a rear collision, the bracket initially receives the movement of the battery. When the vehicle is deformed at the end of the rear impact, the battery is sandwiched between the wheel house and the bracket, there is no living space, and when the force with which the battery pushes the bracket exceeds a predetermined value, the long wall of the bracket becomes the short wall Fall down. As a result, the battery can ride on the bracket whose long wall portion has fallen, and the battery can move rearward to ensure a living space.

上記構成の後部構造によれば、車両が後突を受けて、ホイールハウスの存在によってバッテリの生存空間が狭くなる場合でも、バッテリの生存空間を確保できる。   According to the rear structure of the above configuration, even when the vehicle receives a rear collision and the battery living space becomes narrow due to the presence of the wheel house, the battery living space can be secured.

実施の形態に係る後部構造の断面図である。It is sectional drawing of the rear part structure concerning embodiment. 図１のＡ部に示すブラケットの斜視図である。It is a perspective view of the bracket shown to the A section of FIG. 図２のＩＩＩ−ＩＩＩ線におけるブラケットとバッテリの配置関係を示す断面図である。It is sectional drawing which shows the arrangement | positioning relationship of the bracket and battery in the III-III line of FIG. 図２のＩＶ−ＩＶ線におけるブラケットとバッテリの配置関係を示す断面図である。It is sectional drawing which shows the arrangement | positioning relationship of the bracket and battery in the IV-IV line of FIG. 図１の後部構造の作用効果を示す図として、車両がバリアによって後突を受けた初期状態の断面図である。FIG. 2 is a cross-sectional view of an initial state in which the vehicle is subjected to a rear collision by a barrier as a diagram illustrating the operational effect of the rear structure of FIG. 図５におけるＢ部の拡大図である。It is an enlarged view of the B section in FIG. 図５から時間が経過して、ブラケットが折れ曲がってバッテリの生存空間を確保した状態の断面図である。FIG. 6 is a cross-sectional view showing a state in which a battery has a living space secured by bending the bracket after time has elapsed from FIG. 5. 図７におけるＣ部の拡大図である。It is an enlarged view of the C section in FIG.

以下に図面を用いて本開示に係る実施の形態につき詳細に説明する。以下において、バッテリは、補機用の低電圧バッテリとするが、車両後部においてホイールハウスの後方側に配置されるバッテリであれば、用途、電圧は問わない。以下では、バッテリは、左後輪用のホイールハウスの後方側に配置されるものとするが、これは説明のための例示であって、車両の仕様等によって、右後輪用のホイールハウスの後方側に配置されてもよい。   Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings. In the following description, the battery is a low-voltage battery for auxiliary machines, but any use and voltage can be used as long as the battery is arranged on the rear side of the wheel house at the rear of the vehicle. In the following, the battery is assumed to be arranged on the rear side of the wheel house for the left rear wheel. However, this is an example for explanation, and the wheel house for the right rear wheel is determined according to the specification of the vehicle. It may be arranged on the rear side.

以下に述べる形状、寸法等は、説明のための例示であって、車両後部構造の仕様等により、適宜変更が可能である。また、以下では、全ての図面において同様の要素には同一の符号を付し、重複する説明を省略する。   The shapes, dimensions, and the like described below are illustrative examples and can be appropriately changed depending on the specifications of the vehicle rear structure. In the following description, the same elements are denoted by the same reference symbols in all the drawings, and redundant description is omitted.

図１は、車両の後部構造１０を示す断面図である。以下では、特に断らない限り、車両の後部構造１０を、単に、後部構造１０と呼ぶ。後部構造１０は、車両において車室よりも後方側の構造で、ラゲージルーム等における各要素の配置構造である。以下の各図において、車両前後方向、車両上下方向、車両幅方向を適宜示す。車両前後方向については、ＦＲと示す方向が車両の前方側の方向で、反対方向が車両の後方側の方向である。車両上下方向については、ＵＰと示す方向が路面に対して上方側の方向であり、反対方向が下方側で路面側の方向である。車両幅方向については、車両の前方側に向いて左方が左側方向で右方が右側方向である。また、車両の各要素が車両の幅方向に関し左右対称の配置となることが多いことから、車室側から車両外側に向かう方向をＯＵＴと示す外側方向とし、車両外側から車室側に向かう方向を内側方向と呼ぶ。   FIG. 1 is a cross-sectional view showing a rear structure 10 of a vehicle. In the following, unless otherwise specified, the rear structure 10 of the vehicle is simply referred to as the rear structure 10. The rear structure 10 is a structure on the rear side of the passenger compartment in the vehicle, and is an arrangement structure of each element in the luggage room or the like. In the following drawings, the vehicle longitudinal direction, the vehicle vertical direction, and the vehicle width direction are shown as appropriate. Regarding the vehicle front-rear direction, the direction indicated by FR is the front side direction of the vehicle, and the opposite direction is the rear side direction of the vehicle. Regarding the vehicle up-down direction, the direction indicated by UP is the direction on the upper side with respect to the road surface, and the opposite direction is the direction on the lower side and on the road surface side. Regarding the vehicle width direction, the left side is the left side and the right side is the right side when facing the front side of the vehicle. In addition, since each element of the vehicle is often arranged symmetrically with respect to the width direction of the vehicle, the direction from the passenger compartment side toward the vehicle outer side is defined as the outer direction indicated by OUT, and the direction from the vehicle outer side toward the passenger compartment side. Is called the inward direction.

図１には、後部構造１０におけるバッテリ２０の周辺の配置関係が示される。バッテリ２０は、車両において、各種電気機器に電力を供給する低電圧の蓄電装置である。蓄電装置本体は略直方体の形状のバッテリケースに収納されているので、図１以下では、バッテリケースの外形を有するものをバッテリ２０と呼ぶ。略直方体のバッテリ２０の後部壁面２２は、車両幅方向に平行に配置されるので、図１には、バッテリ２０を含んで、車両前後方向に平行な線に沿った断面図を示す。すなわち、図１は、（車両前後方向）×（車両上下方向）平面における断面図である。図１で格子状に示す細い線は、車両前後方向に沿った位置と、車両上下方向に沿った高さ位置を示すもので、隣接する線の間隔は１０ｃｍである。これは説明のための例示であって、隣接する線の間隔は適宜変更が可能である。   FIG. 1 shows a positional relationship around the battery 20 in the rear structure 10. The battery 20 is a low-voltage power storage device that supplies power to various electrical devices in the vehicle. Since the power storage device main body is housed in a battery case having a substantially rectangular parallelepiped shape, a battery case having an outer shape of the battery case is referred to as a battery 20 in FIG. Since the rear wall surface 22 of the substantially rectangular parallelepiped battery 20 is arranged in parallel with the vehicle width direction, FIG. 1 shows a cross-sectional view along the line including the battery 20 and parallel to the vehicle front-rear direction. That is, FIG. 1 is a cross-sectional view in the plane of (vehicle longitudinal direction) × (vehicle vertical direction). The thin lines shown in a lattice form in FIG. 1 indicate the position along the vehicle longitudinal direction and the height position along the vehicle vertical direction, and the interval between adjacent lines is 10 cm. This is an illustrative example, and the interval between adjacent lines can be changed as appropriate.

図１において、バッテリトレイ２４は、バッテリ２０が搭載される皿状の部品である。バッテリトレイ２４とバッテリ２０とは、図示しない締結手段で互いに固定される。締結手段としては、ボルトとナット、めねじ穴とボルト等のねじ締結手段が用いられる。   In FIG. 1, the battery tray 24 is a dish-shaped component on which the battery 20 is mounted. The battery tray 24 and the battery 20 are fixed to each other by fastening means (not shown). As the fastening means, screw fastening means such as bolts and nuts, female screw holes and bolts are used.

リアフロアガイドパネル２６は、車両後部における床面を構成するパネル部材で、図示しない車両のボデーに固定される。バッテリトレイ２４は、ボルトとナットを用いた締結手段２５によって、リアフロアガイドパネル２６に固定される。   The rear floor guide panel 26 is a panel member that forms a floor surface at the rear of the vehicle, and is fixed to a vehicle body (not shown). The battery tray 24 is fixed to the rear floor guide panel 26 by fastening means 25 using bolts and nuts.

バッテリクランプ２８は、バッテリ２０を上方側から押えて固定する部材である。図１では、バッテリクランプ２８として、バッテリ２０の上面側の部分のみが示されているが、バッテリ２０の両側面にバッテリトレイ２４から立設した２つのブラケットを用い、両ブラケットの間を例えば鋼板等で結合して、バッテリクランプ２８が形成される。バッテリクランプ２８用のブラケットは、車両のボデーを構成するリアサイドメンバ等から立設してもよい。バッテリクランプ２８は、バッテリ２０の端子３４に接触しない位置に配置される。バッテリ２０は、バッテリクランプ２８とバッテリトレイ２４との間に挟まれて、上下方向の移動に対する固定が行われる。   The battery clamp 28 is a member that presses and fixes the battery 20 from above. In FIG. 1, only the upper surface portion of the battery 20 is shown as the battery clamp 28, but two brackets erected from the battery tray 24 are used on both side surfaces of the battery 20, and a steel plate is provided between the brackets, for example. Etc. to form a battery clamp 28. The bracket for the battery clamp 28 may be erected from a rear side member or the like constituting the vehicle body. The battery clamp 28 is disposed at a position where it does not contact the terminal 34 of the battery 20. The battery 20 is sandwiched between the battery clamp 28 and the battery tray 24, and is fixed against movement in the vertical direction.

ホイールハウス３０は、車両の左後輪を覆うリアホイールハウスの内で、リアホイールハウスの車両幅方向内側部を構成するリアホイールハウスインナである。図１には図示されないが、リアホイールハウスの車両幅方向外側部を構成するのはリアホイルハウスアウタである。ここでは、リアホイールハウスインナを、単に、ホイールハウス３０と呼ぶ。バッテリ２０は、後部構造１０において、ホイールハウス３０に対し車両前後方向の後方側に離間して配置される。さらに、ホイールハウス３０の車両幅方向の位置に対し、バッテリ２０は車両幅方向に沿って一部重なって配置される。図１には締結手段２５が示されているので、バッテリ２０と締結手段２５とを含み、車両前後方向に平行な線に沿った断面図において、バッテリ２０の前方側にホイールハウス３０が存在することを示す。バッテリ２０の幅方向に沿って車室側に向うと、バッテリ２０の前方側にホイールハウス３０が存在しなくなる。「車両幅方向に沿って一部重なって配置される」とは、バッテリ２０の幅方向に沿って、バッテリ２０の前方側にホイールハウス３０が存在する位置と、バッテリ２０の前方側にホイールハウス３０が存在しない位置とがあることを意味する。   The wheel house 30 is a rear wheel house inner that constitutes the vehicle width direction inner side portion of the rear wheel house in the rear wheel house that covers the left rear wheel of the vehicle. Although not shown in FIG. 1, it is the rear wheel house outer that constitutes the vehicle width direction outer side portion of the rear wheel house. Here, the rear wheel house inner is simply referred to as a wheel house 30. The battery 20 is disposed in the rear structure 10 so as to be separated from the wheel house 30 on the rear side in the vehicle front-rear direction. Furthermore, the battery 20 is disposed so as to partially overlap the position of the wheel house 30 in the vehicle width direction along the vehicle width direction. Since the fastening means 25 is shown in FIG. 1, the wheel house 30 exists on the front side of the battery 20 in a cross-sectional view along the line parallel to the vehicle longitudinal direction including the battery 20 and the fastening means 25. It shows that. When it goes to the vehicle compartment side along the width direction of the battery 20, the wheel house 30 does not exist on the front side of the battery 20. “Partially disposed along the vehicle width direction” means that the wheel house 30 is located on the front side of the battery 20 along the width direction of the battery 20 and the wheel house is located on the front side of the battery 20. It means that there is a position where 30 does not exist.

ロアバックパネル３２は、車体の後壁部を構成するパネル部材である。ロアバックパネル３２とリアフロアガイドパネル２６とは、溶接あるいはボルトとナットによる締結手段によって、互いに固定される。車両が外部のバリア７０（図５参照）によって後突を受けるときは、バリア７０がロアバックパネル３２に衝突して、リアフロアガイドパネル２６等に衝撃を伝える。   The lower back panel 32 is a panel member constituting the rear wall portion of the vehicle body. The lower back panel 32 and the rear floor guide panel 26 are fixed to each other by welding or fastening means using bolts and nuts. When the vehicle receives a rear collision by an external barrier 70 (see FIG. 5), the barrier 70 collides with the lower back panel 32 and transmits an impact to the rear floor guide panel 26 and the like.

ブラケット４０は、車両が受ける衝撃によって生じたバッテリ２０の移動を受け止めるための部材である。車両が後突を受けてロアバックパネル３２が衝撃を受ける場合に、リアフロアガイドパネル２６が車両前後方向に沿って前方側に移動しようとするがバッテリ２０はその質量が大きいので慣性によって元の位置に留まろうとする。これによって、バッテリ２０は、リアフロアガイドパネル２６に対し相対的に移動することになる。ブラケット４０は、この相対的移動を受けとめて、バッテリ２０を車両前後方向に沿った前方側に押し戻すバッテリ固定部材である。   The bracket 40 is a member for receiving the movement of the battery 20 caused by the impact received by the vehicle. When the vehicle receives a rear collision and the lower back panel 32 receives an impact, the rear floor guide panel 26 tries to move forward along the vehicle front-rear direction. Try to stay in. As a result, the battery 20 moves relative to the rear floor guide panel 26. The bracket 40 is a battery fixing member that receives this relative movement and pushes the battery 20 back to the front side along the vehicle front-rear direction.

図２は、ブラケット４０の斜視図である。ブラケット４０は、バッテリ２０の幅方向の大きさに従って幅寸法が選択される。図２は、その一部の例示である。ブラケット４０は、適当な強度を有する金属板材を所定の形状に成形したもので、短手方向の短壁部４２と、長手方向の長壁部４４とを含む。   FIG. 2 is a perspective view of the bracket 40. The width dimension of the bracket 40 is selected according to the size of the battery 20 in the width direction. FIG. 2 is an example of a part of it. The bracket 40 is formed by molding a metal plate having an appropriate strength into a predetermined shape, and includes a short wall portion 42 in the short direction and a long wall portion 44 in the longitudinal direction.

短壁部４２は、バッテリトレイ２４を介して車両の床面固定部であるリアフロアガイドパネル２６に固定される固定部４６を有する固定面４７を含む。固定部４６は、バッテリトレイ２４との溶接点である。溶接に代えて、ボルトとナットの締結手段を用いてもよい。固定部４６によってバッテリトレイ２４に固定された状態の短壁部４２は、バッテリ２０に対し車両前後方向の後方側に配置される。固定面４７以外の部分も含め、短壁部４２の下面の車両高さ方向に沿った高さ位置は、図１に示すように、バッテリ２０の下部面２３と同じ高さ位置である。   The short wall portion 42 includes a fixing surface 47 having a fixing portion 46 that is fixed to the rear floor guide panel 26 that is a vehicle floor surface fixing portion via the battery tray 24. The fixed portion 46 is a welding point with the battery tray 24. Instead of welding, bolt and nut fastening means may be used. The short wall portion 42 fixed to the battery tray 24 by the fixing portion 46 is disposed on the rear side in the vehicle front-rear direction with respect to the battery 20. As shown in FIG. 1, the height position along the vehicle height direction of the lower surface of the short wall portion 42 including the portion other than the fixed surface 47 is the same height position as the lower surface 23 of the battery 20.

長壁部４４は、短壁部４２の固定面４７及び固定面４７と同じ高さ位置にある他の部分から車両上下方向に沿って上方側に立設する立壁である。長壁部４４は、立上り壁部４８、斜面壁部５０、移動受面５２、逃げ面５４を含む複数の壁部を接続した複合壁部である。ここで、移動受面５２は、バッテリ２０の後部壁面２２に対向する壁面で、衝撃を受けた場合のバッテリ２０の移動を受け止める壁面である。   The long wall portion 44 is a standing wall erected on the upper side along the vehicle vertical direction from the fixing surface 47 of the short wall portion 42 and other portions at the same height as the fixing surface 47. The long wall portion 44 is a composite wall portion in which a plurality of wall portions including a rising wall portion 48, an inclined wall portion 50, a movement receiving surface 52, and a flank surface 54 are connected. Here, the movement receiving surface 52 is a wall surface facing the rear wall surface 22 of the battery 20 and is a wall surface that receives the movement of the battery 20 when receiving an impact.

短壁部４２から直接的に垂直に立設して移動受面５２とせずに、複合壁部としたのは、移動受面５２が受ける外力が所定の大きさを超えるまでは長壁部４４が短壁部４２側に倒れない適当な強度とするためである。長壁部４４が短壁部４２側に倒れる外力の所定の大きさは、後部構造１０において、バッテリ２０がホイールハウス３０とブラケット４０とに挟まれて生存空間が無くなった場合に、バッテリ２０がブラケット４０を押す力に設定される。この外力の所定の大きさは、後部構造１０と車両が後突を受けるときの衝撃力の大きさ等から、シミュレーションあるいは実験的に求めることができる。   The composite wall portion is set up directly vertically from the short wall portion 42 so as not to serve as the movement receiving surface 52. The long wall portion 44 does not move until the external force received by the movement receiving surface 52 exceeds a predetermined magnitude. This is because the strength does not fall to the short wall portion 42 side. The predetermined magnitude of the external force that causes the long wall portion 44 to fall toward the short wall portion 42 is such that when the battery 20 is sandwiched between the wheel house 30 and the bracket 40 in the rear structure 10 and there is no living space, the battery 20 It is set to the force to push 40. The predetermined magnitude of the external force can be obtained by simulation or experiment from the magnitude of the impact force when the rear structure 10 and the vehicle receive a rear collision.

位置決め部５６は、ブラケット４０をバッテリトレイ２４に固定した後にバッテリ２０をバッテリトレイ２４に搭載する場合のバッテリ２０とブラケット４０との間の車両前後方向に沿った位置決めを行う部分である。位置決め部５６は、ブラケット４０において、長壁部４４の立上り壁部４８と斜面壁部５０について、スリット加工と折曲成形等を行って形成される。   The positioning portion 56 is a portion that performs positioning along the vehicle front-rear direction between the battery 20 and the bracket 40 when the battery 20 is mounted on the battery tray 24 after the bracket 40 is fixed to the battery tray 24. The positioning portion 56 is formed in the bracket 40 by slitting and bending the rising wall portion 48 and the slope wall portion 50 of the long wall portion 44.

位置決め部５６の作用について、図３、図４を用いて説明する。図３、図４は、図１のブラケット４０周辺の拡大図で、車両前後方向の位置を示す細線、車両上下方向の位置を示す細線も示した。   The operation of the positioning unit 56 will be described with reference to FIGS. 3 and 4 are enlarged views of the vicinity of the bracket 40 in FIG. 1, and also show a thin line indicating a position in the vehicle front-rear direction and a thin line indicating a position in the vehicle vertical direction.

図３は、図２のＩＩＩ−ＩＩＩ線に沿ったブラケット４０の断面図を含む拡大図である。ブラケット４０においてＩＩＩ−ＩＩＩ線に沿った断面図は、位置決め部５６を含まない部分の断面図である。図４は、図２のＩＶ−ＩＶ線に沿ったブラケット４０の断面図を含む拡大図である。ブラケット４０においてＩＶ−ＩＶ線に沿った断面図は、位置決め部５６を含む部分の断面図である。   FIG. 3 is an enlarged view including a cross-sectional view of the bracket 40 taken along the line III-III in FIG. 2. The cross-sectional view along the line III-III in the bracket 40 is a cross-sectional view of a portion not including the positioning portion 56. FIG. 4 is an enlarged view including a cross-sectional view of the bracket 40 taken along line IV-IV in FIG. A cross-sectional view taken along line IV-IV in the bracket 40 is a cross-sectional view of a portion including the positioning portion 56.

図３は、バッテリトレイ２４にブラケット４０を固定し、白抜矢印で示すようにバッテリ２０をバッテリトレイ２４の上に組付ける組付作業を示す図である。図３は、締結手段２５を含む断面図であるので、バッテリトレイ２４は締結手段２５の高さ分だけ、他の部分よりも低い底面も示されている。締結手段２５が設けられないバッテリトレイ２４の底面は、ブラケット４０の短壁部４２の固定面４７の下面と同じ高さ位置である。バッテリ２０は、白抜矢印の方向に下ろされて、バッテリトレイ２４における締結手段２５が設けられない部分の底面上に搭載される。換言すれば、バッテリ２０の下部面２３の車両上下方向に沿った高さ位置は、ブラケット４０の短壁部４２の固定面４７と同じ高さ位置にある。   FIG. 3 is a diagram illustrating an assembling operation in which the bracket 40 is fixed to the battery tray 24 and the battery 20 is assembled on the battery tray 24 as indicated by a white arrow. Since FIG. 3 is a cross-sectional view including the fastening means 25, the bottom surface of the battery tray 24 is also lower than the other parts by the height of the fastening means 25. The bottom surface of the battery tray 24 where the fastening means 25 is not provided is at the same height as the lower surface of the fixing surface 47 of the short wall portion 42 of the bracket 40. The battery 20 is lowered in the direction of the white arrow and is mounted on the bottom surface of the portion of the battery tray 24 where the fastening means 25 is not provided. In other words, the height position of the lower surface 23 of the battery 20 along the vehicle vertical direction is at the same height position as the fixed surface 47 of the short wall portion 42 of the bracket 40.

図３に示すように、バッテリ２０は、後部壁面２２から突き出る突出部２９を有する。バッテリ２０をバッテリトレイ２４上に組付ける組付作業は、突出部２９が下りる軌跡を組付軌跡６０として、ブラケット４０と組付軌跡６０とが干渉しないように、ブラケット４０の移動受面５２とバッテリ２０の後部壁面２２との間に所定の間隔６２を設ける。所定の間隔６２を設けると、ブラケット４０の立上り壁部４８と突出部２９との間にかなり大きなガタ６４が生じ、組付作業においてバッテリ２０の組付位置が定まらない。   As shown in FIG. 3, the battery 20 has a protruding portion 29 protruding from the rear wall surface 22. The assembling work for assembling the battery 20 on the battery tray 24 is performed by using the movement receiving surface 52 of the bracket 40 so that the bracket 40 and the assembling locus 60 do not interfere with each other with the locus where the protrusion 29 descends as the assembling locus 60. A predetermined distance 62 is provided between the battery 20 and the rear wall surface 22. When the predetermined interval 62 is provided, a considerably large backlash 64 is generated between the rising wall portion 48 of the bracket 40 and the protruding portion 29, and the assembly position of the battery 20 is not determined in the assembly operation.

そこで、位置決め部５６が利用される。図４に示すように、ブラケット４０の短壁部４２から立上がる位置決め部５６の立上り壁部５８の車両前後方向における位置は、移動受面５２の車両前後方向における位置と同じである。したがって、位置決め部５６の立上り壁部５８は、組付軌跡６０とほぼ同じ位置に配置されるので、突出部２９との間のガタ６４が発生せず、組付作業においてバッテリ２０の組付位置が定まる。   Therefore, the positioning unit 56 is used. As shown in FIG. 4, the position of the rising wall portion 58 of the positioning portion 56 rising from the short wall portion 42 of the bracket 40 in the vehicle front-rear direction is the same as the position of the movement receiving surface 52 in the vehicle front-rear direction. Therefore, since the rising wall portion 58 of the positioning portion 56 is disposed at substantially the same position as the assembly locus 60, no backlash 64 is generated between the protruding portion 29 and the assembly position of the battery 20 in the assembly operation. Is determined.

上記構成のブラケット４０の作用効果について、図５から図８を用いて詳細に説明する。これらの図においても、車両前後方向の位置を示す細線、車両上下方向の位置を示す細線も示した。   The effect of the bracket 40 having the above configuration will be described in detail with reference to FIGS. Also in these drawings, a thin line indicating a position in the vehicle longitudinal direction and a thin line indicating a position in the vehicle vertical direction are also shown.

図５は、車両が外部のバリア７０によって後突された初期状態を示す図である。バリア７０は、後部構造１０に衝撃力Ｆを与えるが、後部構造１０は変形等をほとんど生じてなく、図１とほぼ同じ状態である。   FIG. 5 is a diagram illustrating an initial state in which the vehicle is bumped back by the external barrier 70. The barrier 70 gives an impact force F to the rear structure 10, but the rear structure 10 hardly deforms and is in the same state as in FIG. 1.

図６は、図５におけるＢ部の拡大図である。後部構造１０がバリア７０から衝撃力Ｆを受けると、図示しない車両のボデーに接続されているリアフロアガイドパネル２６が車両前後方向に沿って前方側に行き、質量のあるバッテリ２０は慣性でその位置に留まろうとしてブラケット４０に慣性力Ｇを与える。ブラケット４０は慣性力Ｇを受けとめて、リアフロアガイドパネル２６に対しバッテリ２０が相対的に移動することを抑制する。これが後突の初期状態におけるブラケット４０の作用効果である。   FIG. 6 is an enlarged view of a portion B in FIG. When the rear structure 10 receives an impact force F from the barrier 70, the rear floor guide panel 26 connected to the vehicle body (not shown) goes to the front side along the vehicle front-rear direction, and the mass battery 20 is in its position due to inertia. An inertial force G is applied to the bracket 40 in an attempt to stay at the position. The bracket 40 receives the inertial force G and suppresses the battery 20 from moving relative to the rear floor guide panel 26. This is the effect of the bracket 40 in the initial state of the rear collision.

図７は、図５から時間が経過し、後突の終期における後部構造１１を示す図である。後部構造１１では、バリア７０からの衝撃力Ｆを受けて、ホイールハウス３０の後方側であってバッテリ２０の前方側から、リアフロアガイドパネル２６が潰れ始めて、車両前後方向に沿った長さが短くなったリアフロアガイドパネル２７となる。バリア７０は車両前後方向の前方側に侵出し、ロアバックパネル３２が一部損傷したロアバックパネル３３となり、ホイールハウス３０も一部が損傷したホイールハウス３１となる。これによって、バッテリ２０は、ホイールハウス３１とブラケット４０との間に挟まれて、生存空間が無くなった状態になる。この状態では、バッテリ２０がブラケット４０を押す力が大きくなり、所定値を超えると、ブラケット４０はその強度限界を超える力を受けて、折れ曲がった状態のブラケット４１となる。そして、バッテリ２０は、折れ曲がったブラケット４１の上に乗り上げたバッテリ２１となり、後方側に移動でき、これにより、バッテリ２１の生存空間を確保できる。これが、後突の終期におけるブラケット４０の作用効果である。   FIG. 7 is a diagram showing the rear structure 11 at the end of the rear impact after a lapse of time from FIG. In the rear structure 11, the rear floor guide panel 26 starts to be crushed from the rear side of the wheel house 30 and from the front side of the battery 20 in response to the impact force F from the barrier 70, and the length along the vehicle front-rear direction is short. The rear floor guide panel 27 becomes. The barrier 70 penetrates to the front side in the vehicle front-rear direction, the lower back panel 32 becomes a partially damaged lower back panel 33, and the wheel house 30 becomes a partially damaged wheel house 31. As a result, the battery 20 is sandwiched between the wheel house 31 and the bracket 40, and the living space is eliminated. In this state, the force with which the battery 20 pushes the bracket 40 increases, and when the value exceeds a predetermined value, the bracket 40 receives a force exceeding its strength limit and becomes a bracket 41 in a bent state. Then, the battery 20 becomes a battery 21 that rides on the bent bracket 41 and can move to the rear side, so that a living space of the battery 21 can be secured. This is the effect of the bracket 40 at the end of the rear collision.

図８は、図７のＣ部の拡大図で、折れ曲がる前のブラケット４０とバッテリ２０から、折れ曲がったブラケット４１とブラケット４１に乗り上げたバッテリ２１への状態変化を示す。ブラケット４０でバッテリ２０の後方側への移動が制限された状態から、ブラケット４０が折れ曲がり、バッテリトレイ２４に取付けられた短壁部４２に長壁部４４の移動受面５２がほぼ平行となる。折れ曲がってバッテリトレイ２４にほぼ平行となったブラケット４１には、バッテリ２１の下部面２３’が乗り上げる。ブラケット４１に乗り上げたバッテリ２１は、折れ曲がる前のブラケット４０に移動が制限されていたバッテリ２０に対し、車両前後方向に沿って後方側に移動するので、バッテリ２１の生存空間は、バッテリ２０の生存空間よりも広くなる。   FIG. 8 is an enlarged view of a portion C in FIG. 7, and shows a state change from the bracket 40 and the battery 20 before being bent to the bent bracket 41 and the battery 21 riding on the bracket 41. The bracket 40 is bent from the state where the rearward movement of the battery 20 is restricted by the bracket 40, and the movement receiving surface 52 of the long wall portion 44 becomes substantially parallel to the short wall portion 42 attached to the battery tray 24. The lower surface 23 ′ of the battery 21 rides on the bracket 41 that is bent and substantially parallel to the battery tray 24. The battery 21 riding on the bracket 41 moves to the rear side along the vehicle front-rear direction with respect to the battery 20 whose movement is restricted by the bracket 40 before being bent. It becomes wider than space.

上記構成の後部構造１０によれば、車両が衝撃を受けると、車両の床面固定部側に固定されているブラケット４０がバッテリ２０の移動を受け止める。後突のように大きな衝撃を受けた場合には、後突の初期ではブラケット４０がバッテリ２０の移動を受け止めるが、車両が後突によって変形し、バッテリ２０がホイールハウス３０とブラケット４０との間に挟まれて生存空間が無くなる。その場合に、バッテリ２０がブラケット４０を押す力が所定の大きさを超えると、ブラケット４０の長壁部４４の移動受面５２が短壁部４２側に倒れるので、バッテリ２０は長壁部４４が倒れたブラケット４１の上に乗り上げる。ブラケット４１に乗り上げたバッテリ２１は、後方側に移動出来て、生存空間を確保できる。このように、車両が後突を受けて、ホイールハウス３０の存在によってバッテリ２０の生存空間が狭くなる場合でも、バッテリ２０の生存空間を確保できる。   According to the rear structure 10 having the above configuration, when the vehicle receives an impact, the bracket 40 fixed to the floor surface fixing portion side of the vehicle receives the movement of the battery 20. When a large impact is received as in a rear collision, the bracket 40 receives the movement of the battery 20 at the initial stage of the rear collision, but the vehicle is deformed by the rear collision, and the battery 20 is between the wheel house 30 and the bracket 40. The living space is lost. In this case, when the force with which the battery 20 pushes the bracket 40 exceeds a predetermined magnitude, the movement receiving surface 52 of the long wall portion 44 of the bracket 40 falls to the short wall portion 42 side, so that the battery 20 falls on the long wall portion 44. Get on the bracket 41. The battery 21 riding on the bracket 41 can move to the rear side, and a living space can be secured. Thus, even when the vehicle receives a rear collision and the living space of the battery 20 becomes narrow due to the presence of the wheel house 30, the living space of the battery 20 can be secured.

１０，１１ （車両の）後部構造、２０，２１ バッテリ、２２ 後部壁面、２３，２３’ （バッテリ）下部面、２４ バッテリトレイ、２５ 締結手段、２６，２７ リアフロアガイドパネル、２８ バッテリクランプ、２９ 突出部、３０，３１ ホイールハウス、３２，３３ ロアバックパネル、３４ 端子、４０，４１ ブラケット、４２ 短壁部、４４ 長壁部、４６ 固定部、４７ 固定面、４８ 立上り壁部、５０ 斜面壁部、５２ 移動受面、５４ 逃げ面、５６ 位置決め部、５８ 立上り壁部、６０ 組付軌跡、６２ 所定の間隔、６４ ガタ、７０ バリア。   10, 11 (vehicle) rear structure, 20, 21 battery, 22 rear wall surface, 23, 23 '(battery) lower surface, 24 battery tray, 25 fastening means, 26, 27 rear floor guide panel, 28 battery clamp, 29 projecting Part, 30, 31 wheel house, 32, 33 lower back panel, 34 terminal, 40, 41 bracket, 42 short wall part, 44 long wall part, 46 fixing part, 47 fixing surface, 48 rising wall part, 50 slope wall part, 52 moving receiving surface, 54 flank, 56 positioning portion, 58 rising wall portion, 60 assembly locus, 62 predetermined interval, 64 backlash, 70 barrier.

Claims (1)

ホイールハウスと、
前記ホイールハウスに対し車両前後方向の後方側に離間し、且つ、前記ホイールハウスの車両幅方向の位置に対し車両幅方向に沿って一部重なって配置されたバッテリと、
車両が受ける衝撃によって生じた前記バッテリの移動を受け止めるためのブラケットと、
を備え、
前記ブラケットは、
長手方向の長壁部と短手方向の短壁部とを含み、
前記短壁部は、前記バッテリに対し車両前後方向の後方側で、バッテリ下部面と同じ高さ位置において前記車両の床面固定部側に固定される固定面を有し、
前記長壁部は、前記短壁部の前記固定面から立設し前記バッテリの後部壁面に対し所定の間隔を空けて向かい合って延び、所定値を超える外力を受けて前記短壁部側に倒れた状態となる、車両の後部構造。 Wheel house,
A battery that is spaced apart from the wheel house in the longitudinal direction of the vehicle and that is partially overlapped along the vehicle width direction with respect to the vehicle width direction position of the wheel house;
A bracket for receiving movement of the battery caused by impact received by the vehicle;
With
The bracket is
Including a long wall portion in the longitudinal direction and a short wall portion in the short direction,
The short wall portion has a fixed surface that is fixed to the floor surface fixing portion side of the vehicle at the same height position as the battery lower surface on the rear side in the vehicle front-rear direction with respect to the battery,
The long wall portion is erected from the fixed surface of the short wall portion and extends facing the rear wall surface of the battery at a predetermined interval, and falls to the short wall portion side by receiving an external force exceeding a predetermined value. The rear structure of the vehicle that is in a state.
JP2017182538A 2017-09-22 2017-09-22 Rear structure of the vehicle Active JP6822361B2 (en)

Priority Applications (1)

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JP2007083963A (en) * 2005-09-26 2007-04-05 Mazda Motor Corp Battery arrangement structure
JP2013043561A (en) * 2011-08-24 2013-03-04 Toyota Motor Corp Battery mounting structure
JP2014000914A (en) * 2012-06-20 2014-01-09 Toyota Auto Body Co Ltd Installation structure of battery
WO2015019742A1 (en) * 2013-08-07 2015-02-12 日産自動車株式会社 Structure for mounting battery to vehicle body
US9517686B1 (en) * 2015-09-03 2016-12-13 Ford Global Technologies, Llc Traction battery dual-stage mounting bracket
DE102015217524A1 (en) * 2015-09-14 2017-03-16 Volkswagen Aktiengesellschaft Body structure for a two-lane motor vehicle

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007083963A (en) * 2005-09-26 2007-04-05 Mazda Motor Corp Battery arrangement structure
JP2013043561A (en) * 2011-08-24 2013-03-04 Toyota Motor Corp Battery mounting structure
JP2014000914A (en) * 2012-06-20 2014-01-09 Toyota Auto Body Co Ltd Installation structure of battery
WO2015019742A1 (en) * 2013-08-07 2015-02-12 日産自動車株式会社 Structure for mounting battery to vehicle body
US9517686B1 (en) * 2015-09-03 2016-12-13 Ford Global Technologies, Llc Traction battery dual-stage mounting bracket
DE102015217524A1 (en) * 2015-09-14 2017-03-16 Volkswagen Aktiengesellschaft Body structure for a two-lane motor vehicle

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