JP7601200B2

JP7601200B2 - Vehicle-mounted device fixing structure

Info

Publication number: JP7601200B2
Application number: JP2023502257A
Authority: JP
Inventors: 昇治谷澤; 奏仁木村; 雅治山岸; 利次三崎; 陽一久間; 雄介岡田; 正晴井口
Original assignee: Mitsubishi Motors Corp
Current assignee: Mitsubishi Motors Corp
Priority date: 2021-02-26
Filing date: 2022-02-08
Publication date: 2024-12-17
Anticipated expiration: 2042-02-08
Also published as: JPWO2022181314A1; WO2022181314A1

Description

本開示は、車載機器の固定構造に関する。 This disclosure relates to a fixing structure for in-vehicle equipment.

車両のリヤホイールハウスの後方において車体後壁との間に、バッテリーや高電圧機器等の車載機器が設置される場合がある。このような場所での車載機器の車体への固定構造として、例えば、特許文献１には、バッテリーを設置するための作業スペースを削減することを目的とした車載機器の固定構造が開示されている。 In some cases, on-board equipment such as a battery or high-voltage equipment is installed behind the rear wheel house of a vehicle and between the rear wall of the vehicle body. For example, Patent Document 1 discloses a structure for fixing on-board equipment to the vehicle body in such a location, which aims to reduce the working space required to install the battery.

この特許文献１の車載機器の固定構造は、車体に取り付けられると共に、底壁部と、第１側壁部と、第２側壁部と、を有するベース部材と、ベース部材に載置されると共に、第１側壁部に当接する第１側面部と、第２側壁部に当接する第２側面部と、第１側面部と反対側に設けられた第３側面部と、第２側面部と反対側に設けられた第４側面部と、を有する車載機器としてのバッテリーと、第３側面部側及び第４側面部側に設けられると共に、第３側面部に当接する第３側面保持部と、第４側面部に当接する第４側面保持部と、底壁部に取り付けられかつ略板状に形成された締結部と、を有する保持部材と、バッテリーの車両上方側への移動を抑制する車載機器係止部と、を有している。The fixing structure for vehicle-mounted equipment in Patent Document 1 includes a base member that is attached to the vehicle body and has a bottom wall portion, a first side wall portion, and a second side wall portion; a battery as vehicle-mounted equipment that is placed on the base member and has a first side portion abutting the first side wall portion, a second side portion abutting the second side wall portion, a third side portion provided on the side opposite the first side portion, and a fourth side portion provided on the side opposite the second side portion; a retaining member that is provided on the third side portion side and the fourth side portion side and has a third side retaining portion abutting the third side portion, a fourth side retaining portion abutting the fourth side portion, a fastening portion attached to the bottom wall portion and formed in a generally plate shape; and a vehicle-mounted equipment locking portion that prevents the battery from moving toward the upper side of the vehicle.

特許第６５４４３１１号公報Patent No. 6544311

しかしながら、上述の特許文献１に開示された車載機器の固定構造による場合、バッテリーの第１側面部に当接するベース部材の第１側壁部と、バッテリーの第３側面部に当接する保持部材の第３側面保持部とによって、バッテリーは車両前後方向に挟持され、同様に、バッテリーの第２側面部に当接するベース部材の第２側壁部と、バッテリーの第４側面部に当接する保持部材の第４側面保持部とによって、バッテリーは車幅方向に挟持される。従って、バッテリーは、略水平面内での移動が抑制されている。さらに、車載機器係止部によって、バッテリーは車両上下方向への移動も抑制されている。However, in the case of the fixing structure for on-board equipment disclosed in the above-mentioned Patent Document 1, the battery is clamped in the fore-and-aft direction of the vehicle by the first side wall portion of the base member abutting the first side portion of the battery and the third side retaining portion of the retaining member abutting the third side portion of the battery, and similarly, the battery is clamped in the vehicle width direction by the second side wall portion of the base member abutting the second side portion of the battery and the fourth side retaining portion of the retaining member abutting the fourth side portion of the battery. Therefore, the movement of the battery in a substantially horizontal plane is restricted. Furthermore, the on-board equipment locking portion also restricts the movement of the battery in the vertical direction of the vehicle.

このように、特許文献１の固定構造は、バッテリーは、車両前後方向、車幅方向、車両上下方向における移動が全て抑制されようにベース部材に固定されて車体に固定されるので、例えば、車両の後突時に車体に前後方向の衝突荷重が入力した場合、衝突荷重は車体からベース部材、ベース部材からバッテリーへと直接作用して、バッテリーに大きな衝撃を与える虞がある。特許文献１には、車体からベース部材、ベース部材からバッテリーへと入力される衝突荷重を緩和してバッテリーを保護するような構造は示されていない。 In this way, in the fixing structure of Patent Document 1, the battery is fixed to the base member and then to the vehicle body in such a way that movement in the vehicle's fore-and-aft direction, vehicle width direction, and vehicle up-and-down direction is all suppressed, so if a collision load in the fore-and-aft direction is input to the vehicle body during a rear-end collision, for example, the collision load may act directly from the vehicle body to the base member and from the base member to the battery, causing a large impact on the battery. Patent Document 1 does not disclose a structure that protects the battery by mitigating the collision load input from the vehicle body to the base member and from the base member to the battery.

そこで、上記課題に鑑み、本発明の少なくとも一つの実施形態は、車両のリヤホイールハウスの後方において車体後壁との間に設置される車載機器に入力される後突時の衝突荷重を緩和して車載機器を保護する車載機器の固定構造を提供することを目的とする。Therefore, in consideration of the above problems, at least one embodiment of the present invention aims to provide a fixing structure for on-board equipment that protects the on-board equipment by mitigating the collision load input to the on-board equipment installed between the rear wheel house of the vehicle and the rear wall of the vehicle body during a rear collision.

（１）前述した目的を達成するために発明されたものであり、本発明の少なくとも一つの実施形態は、車両のリヤホイールハウスの後方において車体後壁との間に設置される車載機器の固定構造であって、前記リヤホイールハウスの車両内側におけるリヤフロアパネルの下面に車両前後方向に延在して設けられるサイドメンバと、前記車載機器を載置するトレーと、前記トレーの底壁部に設けられ、前記トレーを車体に取り付けるボルトが貫通する複数のトレー取付部と、を有し、複数の前記トレー取付部のうち車幅方向において最も内側かつ車両前後方向において最も後方に位置される前記トレー取付部のみが、前記サイドメンバに取り付けられ、残りの複数の前記トレー取付部は、前記リヤフロアパネルに取り付けられることを特徴とする。 (1) Invented to achieve the above-mentioned object, at least one embodiment of the present invention is a fixing structure for on-vehicle equipment that is installed between the rear wheel house of a vehicle and the rear wall of the vehicle body behind the rear wheel house, the fixing structure having a side member extending in the fore-and-aft direction of the vehicle on the underside of the rear floor panel on the vehicle inside side of the rear wheel house, a tray for placing the on-vehicle equipment, and a plurality of tray mounting portions provided on the bottom wall of the tray and through which bolts for attaching the tray to the vehicle body pass, wherein only the tray mounting portion that is located most inward in the vehicle width direction and most rearward in the fore-and-aft direction of the vehicle among the plurality of tray mounting portions is attached to the side member, and the remaining plurality of tray mounting portions are attached to the rear floor panel.

このような構成（１）によれば、車両の後突時には、衝突荷重は、リヤフロアパネルの下面に車両前後方向に延在して設けられるサイドメンバを伝わり車載機器を載置しているトレーにも掛かる。その際に、トレーを車体に取り付ける複数のトレー取付部のうち車幅方向において最も内側に位置されるトレー取付部は、サイドメンバに取り付けられ、残りの複数のトレー取付部は、リヤフロアパネルに取り付けられるので、車幅方向において最も内側に位置されるトレー取付部に強い衝突荷重が掛かるため、最も内側のトレー取付部は破断が生じやすい。残りのトレー取付部は、複数箇所で取り付けられ衝突荷重は分散されるとともに、衝突荷重が直接伝達されるサイドメンバではなくリヤフロアパネルに取り付けられるためトレー取付部は破断しにくい。 According to this configuration (1), in the event of a rear-end collision, the collision load is transmitted through the side members provided on the underside of the rear floor panel extending in the fore-and-aft direction of the vehicle and is also applied to the tray on which the in-vehicle equipment is placed. At that time, of the multiple tray mounting parts that mount the tray to the vehicle body, the tray mounting part located on the innermost side in the vehicle width direction is attached to the side members, and the remaining multiple tray mounting parts are attached to the rear floor panel. As a result, a strong collision load is applied to the tray mounting part located on the innermost side in the vehicle width direction, making the innermost tray mounting part more likely to break. The remaining tray mounting parts are attached at multiple points, dispersing the collision load, and are attached to the rear floor panel rather than to the side members to which the collision load is directly transmitted, making the tray mounting parts less likely to break.

従って、車幅方向において最も内側に位置されるトレー取付部のみを積極的に破断させことによって、後突時にトレーに作用する衝突荷重を吸収して緩和できる。また、残りのトレー取付部は、破断しにくいためトレーは車載機器を保持できる。Therefore, by actively breaking only the tray attachment section located on the innermost side in the vehicle width direction, the collision load acting on the tray during a rear-end collision can be absorbed and mitigated. In addition, the remaining tray attachment sections are less likely to break, so the tray can hold the on-board equipment.

（２）幾つかの実施形態では、前記トレー取付部がリヤフロア面よりも上方に位置されるように、リヤフロア面と前記トレー取付部との間にバッテリブラケットが設けられることを特徴とする。 (2) In some embodiments, a battery bracket is provided between the rear floor surface and the tray mounting portion so that the tray mounting portion is positioned above the rear floor surface.

このような構成（２）によれば、バッテリブラケットによって、トレー取付部が、リヤフロア面よりも上方に配置されているので、リヤフロアを伝わる後突時の衝突荷重の流れはバッテリブラケットによって吸収されてトレー取付け部に入力されるため、トレーへの後突時の衝突荷重は緩和される。 According to this configuration (2), the battery bracket positions the tray mounting portion above the rear floor surface, so that the flow of the collision load during a rear-end collision that travels along the rear floor is absorbed by the battery bracket and input to the tray mounting portion, thereby mitigating the collision load on the tray during a rear-end collision.

（３）幾つかの実施形態では、前記バッテリブラケットは、車幅方向において最も内側かつ車両前後方向において最も後方に位置される前記トレー取付部が取り付けられる第１バッテリブラケットと、残りの複数の前記トレー取付部が取り付けられる第２バッテリブラケットとに分割されて設置されることを特徴とする。 (3) In some embodiments, the battery bracket is divided into a first battery bracket to which the tray mounting portion that is located most inward in the vehicle width direction and most rearward in the vehicle fore-and-aft direction is attached, and a second battery bracket to which the remaining multiple tray mounting portions are attached.

このような構成（３）によれば、バッテリブラケットは第１バッテリブラケットと第２バッテリブラケットとに分割して設置され、第１バッテリブラケットの部分は、リヤフロアパネルを介してサイドメンバに取り付けられ、第２バッテリブラケットの部分は、リヤフロアパネルに取り付けられるので、車幅方向において最も内側に位置されるトレー取付部には、サイドメンバから第１バッテリブラケットを介して衝突荷重が効率よく掛かりトレー取付部の破断を生じさせることができる。According to this configuration (3), the battery bracket is divided into a first battery bracket and a second battery bracket, the first battery bracket portion is attached to the side member via the rear floor panel, and the second battery bracket portion is attached to the rear floor panel. Therefore, the collision load is efficiently applied from the side member through the first battery bracket to the tray mounting portion located at the innermost position in the vehicle width direction, causing the tray mounting portion to break.

（４）幾つかの実施形態では、前記第１バッテリブラケットは、一端部が前記リヤフロアパネルを介して前記サイドメンバの後端部に結合し、他端部が前記車体後壁に結合し、前記サイドメンバと前記車体後壁とを架け渡す補強部材に設けられることを特徴とする。 (4) In some embodiments, the first battery bracket is characterized in that one end is connected to the rear end of the side member via the rear floor panel and the other end is connected to the rear wall of the vehicle body, and is provided on a reinforcing member that bridges between the side member and the rear wall of the vehicle body.

このような構成（４）によれば、第１バッテリブラケットがサイドメンバと車体後壁とを架け渡す補強部材に設けられるので、サイドメンバから伝達される後突荷重と車体後壁から伝達される後突荷重の両方が作用する位置に第１バッテリブラケットが設置されるため、後突荷重を効果的に第１バッテリブラケットに伝達できる。 According to this configuration (4), the first battery bracket is provided on a reinforcing member that bridges the side member and the rear wall of the vehicle body, and the first battery bracket is installed in a position where both the rear impact load transmitted from the side member and the rear impact load transmitted from the rear wall of the vehicle body act, so that the rear impact load can be effectively transmitted to the first battery bracket.

（５）幾つかの実施形態では、前記車載機器が載置される前記トレーの底壁部は平面視で略四角形状を有し、リヤホイールハウス側の車両内側の角部には面取が形成されることを特徴とする。 (5) In some embodiments, the bottom wall portion of the tray on which the vehicle-mounted equipment is placed has an approximately rectangular shape in a plan view, and a chamfer is formed on the corner on the inside of the vehicle facing the rear wheel house.

このような構成（５）によれば、トレーの底壁部は平面視で略四角形状に形成され、底壁部のリヤホイールハウス側の車両内側の角部が、面取り形状に形成さるので、後突時にトレーが右回りに回転してもトレーとリヤホイールハウスとの干渉量が低減される。 According to this configuration (5), the bottom wall portion of the tray is formed in a substantially rectangular shape in a plan view, and the corner portion of the bottom wall portion on the vehicle inner side facing the rear wheel house is formed in a chamfered shape, so that even if the tray rotates clockwise during a rear-end collision, the amount of interference between the tray and the rear wheel house is reduced.

すなわち、車載機器を載置するトレーは、サイドメンバの車両外側に設置され、さらに、後突時の衝突荷重が、車幅方向において最も内側に位置されるトレー取付部のみに強い衝突荷重が掛かるように構成されているので、略四角形状のトレーの底壁部は車両上方からの平面視において、リヤホイールハウス側の車両内側の角部がリヤホイールハウスに近づくように回転力が生じる。このようなトレーの回転に対して、トレーの低壁部とリヤホイールハウスとの干渉量が低減されて、車載機器が保護される。That is, the tray on which the on-board equipment is placed is installed on the vehicle outer side of the side member, and is configured so that a strong collision load in the event of a rear-end collision is applied only to the tray attachment part located innermost in the vehicle width direction, so that a rotational force is generated in the bottom wall part of the roughly rectangular tray so that the corner on the inside of the vehicle facing the rear wheel house approaches the rear wheel house when viewed in a plan view from above the vehicle. With this rotation of the tray, the amount of interference between the bottom wall part of the tray and the rear wheel house is reduced, protecting the on-board equipment.

（６）幾つかの実施形態では、前記車載機器が載置される前記トレーの底壁部は平面視で略四角形状を有し、車体後壁側の一辺部には後壁部が立設されることを特徴とする。(6) In some embodiments, the bottom wall portion of the tray on which the vehicle-mounted equipment is placed has an approximately rectangular shape in a plan view, and a rear wall portion is erected on one side of the tray toward the rear wall of the vehicle body.

このような構成（６）によれば、トレーの底壁部は平面視で略四角形状に形成され、底壁部の車体後壁側の一辺部には後壁部が立設されるので、後突時にトレーが右回りに回転し、さらに車体後壁が車両前方に移動しても、後壁部によって、車載機器と車体後壁との干渉が防止されて車載機器が保護される。 According to this configuration (6), the bottom wall portion of the tray is formed in a substantially rectangular shape in a plan view, and a rear wall portion is erected on one side of the bottom wall portion facing the rear wall of the vehicle body. Therefore, even if the tray rotates clockwise during a rear collision and the rear wall of the vehicle body moves forward of the vehicle, the rear wall portion prevents interference between the on-board equipment and the rear wall of the vehicle body, thereby protecting the on-board equipment.

（７）幾つかの実施形態では、前記トレーは、樹脂製であり一体成形されることを特徴とする。 (7) In some embodiments, the tray is made of resin and is molded as a single piece.

このような構成（７）によれば、トレーは、樹脂製で一体成形されるので、トレーの製造が容易になる。また、トレーが樹脂製であるため、後突荷重が強く掛かるサイドメンバに取りけられる車幅方向の最も内側に位置されるトレー取付部において、ボルトによってボルト孔の周縁部に破断を生じやすくできる。According to this configuration (7), the tray is made of resin and is molded as a single piece, which makes it easy to manufacture the tray. Also, because the tray is made of resin, it is easier for the bolts to break the periphery of the bolt holes at the tray attachment portion located at the innermost position in the vehicle width direction where the tray is attached to the side member to which a strong rear-end collision load is applied.

本発明の少なくとも一つの実施形態によれば、車両のリヤホイールハウスの後方において車体後壁との間に設置される車載機器に入力される後突時の衝突荷重を緩和して車載機器を保護できる。According to at least one embodiment of the present invention, it is possible to protect on-board equipment by mitigating the collision load during a rear collision input to the on-board equipment installed between the rear wheel house of the vehicle and the rear wall of the vehicle body behind the rear wheel house.

本発明の一実施形態に係る車載機器の固定構造によって固定されたバッテリーを車両後方から見た斜視図である。1 is a perspective view of a battery fixed by an in-vehicle device fixing structure according to an embodiment of the present invention, as viewed from the rear of the vehicle. バッテリーをトレー上に載置して固定する状態を示す分解斜視図である。FIG. 4 is an exploded perspective view showing a state in which the battery is placed on the tray and fixed. トレーブラケットの取り付け部分の拡大斜視図である。FIG. 4 is an enlarged perspective view of a mounting portion of the tray bracket. バッテリーがトレー上に載置されて固定された状態を示す車両前後方向の側面視図である。2 is a side view in the vehicle front-rear direction showing the battery placed and fixed on the tray. FIG. 図４のＡ―Ａ線断面図である。5 is a cross-sectional view taken along line A-A of FIG. 4. トレーが固定される車体側の構成を示す斜視図である。FIG. 2 is a perspective view showing a configuration of a vehicle body to which a tray is fixed. 図６のＢ―Ｂ線断面図である。7 is a cross-sectional view taken along line B-B of FIG. 6. 後突時の衝突荷重の伝達状態を説明する斜視図である。FIG. 4 is a perspective view illustrating a transmission state of a collision load during a rear collision. 後突時のトレー及びバッテリーと車体との干渉緩和部分を説明する斜視図である。11 is a perspective view illustrating an interference mitigation portion between the tray and the battery and the vehicle body in the event of a rear-end collision. FIG.

以下、本発明の実施形態を図面に基づいて詳細に説明する。ただし、実施形態として記載されている、または図面に示されている構成部品の相対的配置等は、本発明の範囲をこれらに限定する趣旨ではなく、単なる説明例にすぎない。なお、説明中の上下前後左右の方向は、運転席から乗員が前方を見た方向で定義するものとする。各図中において、「ＦＲ」は前方、「ＬＨ」は左方、「ＵＰＲ」は上方を示す。 Below, an embodiment of the present invention will be described in detail with reference to the drawings. However, the relative arrangement of components described as an embodiment or shown in the drawings is not intended to limit the scope of the present invention, but is merely an explanatory example. Note that the directions of up, down, front, back, left and right in the description are defined as the direction in which a passenger looks forward from the driver's seat. In each figure, "FR" indicates forward, "LH" indicates left, and "UPR" indicates up.

図１に本発明の一実施形態を示し、車載機器の固定構造１によって車載機器として、例えばバッテリー３が車体に固定された状態を示す。図１は、車載機器としてのバッテリー３を車両後方から見た斜視図である。 Figure 1 shows one embodiment of the present invention, and shows a state in which an in-vehicle device, for example a battery 3, is fixed to the vehicle body by the in-vehicle device fixing structure 1. Figure 1 is an oblique view of the battery 3 as an in-vehicle device, as seen from the rear of the vehicle.

図１に示すように、本実施形態では、車両５は、車両後部に荷室７を有し、後端部には開閉可能な図示しないリヤゲートを有している。そして、本発明の車載機器の固定構造１は、荷室７内における車幅方向の右側に設けられ、車両のリヤホイールハウス９の後方と車体後壁１１の前方との間のリヤフロアパネル１３上に設けられている。As shown in Figure 1, in this embodiment, a vehicle 5 has a luggage compartment 7 at the rear of the vehicle and an openable and closable tailgate (not shown) at the rear end. The fixing structure 1 for on-board equipment of the present invention is provided on the right side in the vehicle width direction within the luggage compartment 7, on the rear floor panel 13 between the rear of the rear wheel house 9 of the vehicle and the front of the rear wall 11 of the vehicle body.

さらに、車載機器の固定構造１は、リヤホイールハウス９の車両内側におけるリヤフロアパネル１３の下面に車両前後方向に延在する左右一対のサイドメンバ１５の車両外側に主に配置されている。 Furthermore, the fixing structure 1 for the on-board equipment is mainly arranged on the outer side of a pair of left and right side members 15 extending in the fore-and-aft direction of the vehicle on the underside of the rear floor panel 13 on the inner side of the rear wheel house 9.

バッテリー３の後方の車体後壁１１は、リヤゲート開口部１７の左右側を形成するリヤピラー１９の下端部分、及びリヤゲート開口部１７の下側を形成するリヤエンドクロスメンバ２１の左右端部分によって形成されている。The rear body wall 11 behind the battery 3 is formed by the lower end portions of the rear pillars 19 which form the left and right sides of the rear gate opening 17, and the left and right end portions of the rear end cross member 21 which forms the lower side of the rear gate opening 17.

なお、車載機器としてバッテリー３について示すが、これに限るものではなく、電気自動車等に設置される高電圧機器等であってもよい。また、車載機器の固定構造１は、荷室７内における車幅方向の右側に設けられる例を説明するが、車幅方向の左側に設けられてもよい。Although a battery 3 is shown as an example of the on-board equipment, this is not limited to this and may be high-voltage equipment installed in an electric vehicle or the like. Also, although an example is described in which the fixing structure 1 for the on-board equipment is provided on the right side in the vehicle width direction within the luggage compartment 7, it may also be provided on the left side in the vehicle width direction.

車載機器の固定構造１は、バッテリー３を載置すると共に、車体に取り付けられるトレー２３を有しており、トレー２３にバッテリー３を固定するバッテリー固定構造２５と、トレー２３を車体に固定するトレー固定構造２７と、を備えている。以下にこれらバッテリー固定構造２５及びトレー固定構造２７について説明する。The fixing structure 1 for vehicle-mounted equipment has a tray 23 on which the battery 3 is placed and which is attached to the vehicle body, and is equipped with a battery fixing structure 25 that fixes the battery 3 to the tray 23, and a tray fixing structure 27 that fixes the tray 23 to the vehicle body. The battery fixing structure 25 and the tray fixing structure 27 are described below.

（バッテリー固定構造）バッテリー固定構造２５の一実施形態について説明する。バッテリー固定構造２５は、図１、２に示すように、バッテリー３を載置すると共に、リヤフロアパネル１３上に取り付けられるトレー２３を有している。そして、トレー２３は、載置されるバッテリー３の車幅方向を固定する車幅方向固定手段２９と、車両上下方向を固定する上下方向固定手段３１と、バッテリー３の車両前後方向を移動可能に支持する前後方向支持手段３３と、を備え、さらに、トレー２３には、車両前後方向の移動を所定量に規制する移動量規制手段３５が設けられている。 (Battery fixing structure) One embodiment of the battery fixing structure 25 will be described. As shown in Figures 1 and 2, the battery fixing structure 25 has a tray 23 on which the battery 3 is placed and which is attached to the rear floor panel 13. The tray 23 is provided with a vehicle width direction fixing means 29 which fixes the vehicle width direction of the placed battery 3, a vertical direction fixing means 31 which fixes the vehicle vertical direction, and a front-rear direction support means 33 which supports the battery 3 so that it can move in the vehicle front-rear direction, and further, the tray 23 is provided with a movement amount limiting means 35 which limits the movement in the vehicle front-rear direction to a predetermined amount.

トレー２３に載置されるバッテリー３は、図２に示すように、矩形箱形であり、上面にプラス側及びマイナス側の電極端子３７がそれぞれ設けられ、矩形形状の四辺のそれぞれの下端部には、バッテリー３の側面から突出して各辺に沿って延在するリブ３９（３９ａ、３９ｂ、３９ｃ、３９ｄ）が形成されている。As shown in FIG. 2, the battery 3 placed on the tray 23 is a rectangular box with positive and negative electrode terminals 37 provided on the upper surface, and ribs 39 (39a, 39b, 39c, 39d) protruding from the side of the battery 3 and extending along each side are formed at the lower end of each of the four sides of the rectangular shape.

トレー２３は、図２に示すように、車両上方からの平面視において、略四角形状に形成されてバッテリー３が載置される底壁部４１を有し、底壁部４１の略四角形状のそれぞれの辺は、車両前後方向及び車幅方向に延在するように設置される。As shown in FIG. 2, the tray 23 has a bottom wall portion 41 on which the battery 3 is placed, which is formed in an approximately rectangular shape when viewed in a plan view from above the vehicle, and each side of the approximately rectangular shape of the bottom wall portion 41 is installed so as to extend in the fore-and-aft direction and the width direction of the vehicle.

さらに、図２に示すように、トレー２３には、底壁部４１の前端部から上方に立設し車幅方向に延在する前壁部４３と、底壁部４１の後端部から上方に立設し車幅方向に延在する後壁部４５と、底壁部４１の車幅方向外側端部から上方に立設し車両前後方向に延在する外壁部４７と、が設けられている。Furthermore, as shown in FIG. 2, the tray 23 is provided with a front wall portion 43 that stands upward from the front end of the bottom wall portion 41 and extends in the vehicle width direction, a rear wall portion 45 that stands upward from the rear end of the bottom wall portion 41 and extends in the vehicle width direction, and an outer wall portion 47 that stands upward from the outer end of the bottom wall portion 41 in the vehicle width direction and extends in the fore-and-aft direction of the vehicle.

また、図２に示すように、トレー２３とは別部材として形成されて、トレー２３の底壁部４１の車幅方向内側端部に着脱可能に取り付けられ、バッテリー３を外壁部４７の後述する第２外壁部４７ｂと挟むようにして車幅方向に固定するトレーブラケット４９を有している。 As shown in FIG. 2, the tray bracket 49 is formed as a separate member from the tray 23, is removably attached to the inner end of the bottom wall portion 41 of the tray 23 in the vehicle width direction, and fixes the battery 3 in the vehicle width direction by sandwiching it between the second outer wall portion 47b of the outer wall portion 47 described later.

外壁部４７は、車幅方向外側の第１外壁部４７ａと、第１外壁部４７ａより車幅方向内側で第１外壁部より高さが低く、トレー２３の車両前後方向の略中央部に車両前後方向に延設される第２外壁部４７ｂと、第１外壁部４１ａより車幅方向内側で第１外壁部４７ａより高さが低く、トレー２３の車両前後方向の後端部に車両前後方向に延設される第３外壁部４７ｃと、によって構成されている。The outer wall portion 47 is composed of a first outer wall portion 47a on the outer side in the vehicle width direction, a second outer wall portion 47b which is located inside the first outer wall portion 47a in the vehicle width direction and has a lower height than the first outer wall portion, and extends in the vehicle fore-and-aft direction at approximately the center of the tray 23 in the vehicle fore-and-aft direction, and a third outer wall portion 47c which is located inside the first outer wall portion 41a in the vehicle width direction and has a lower height than the first outer wall portion 47a, and extends in the vehicle fore-and-aft direction at the rear end of the tray 23 in the vehicle fore-and-aft direction.

第１外壁部４７ａと後壁部４５とは同じ高さを有し（バッテリー３の高さの１／２程度の高さ）、第１外壁部４７ａの後端部と後壁部４５の車幅方向外側端部とは連結している。また、第３外壁部４７ｃの後端部も後壁部４５の車幅方向外側端部と連結している。また、第１外壁部４７ａと第２外壁部４７ｂとの間、及び第１外壁部４７ａと第３外壁部４７ｃとの間には補強用リブ５１が車幅方向に架設されている。The first outer wall portion 47a and the rear wall portion 45 have the same height (approximately half the height of the battery 3), and the rear end of the first outer wall portion 47a is connected to the outer end of the rear wall portion 45 in the vehicle width direction. The rear end of the third outer wall portion 47c is also connected to the outer end of the rear wall portion 45 in the vehicle width direction. Reinforcing ribs 51 are installed in the vehicle width direction between the first outer wall portion 47a and the second outer wall portion 47b, and between the first outer wall portion 47a and the third outer wall portion 47c.

第２外壁部４７ｂの内面には、バッテリー３の車幅方向外側の側面に形成されたリブ３９ａに係合する車両外側係合溝（外側上下方向係合部）５３が車両前後方向に延設され、バッテリー３の車幅方向及び上下方向への移動を拘束すると共に、前後方向への移動は許容するように構成されている。A vehicle outer engagement groove (outer vertical engagement portion) 53 is provided on the inner surface of the second outer wall portion 47b, which engages with a rib 39a formed on the outer side of the battery 3 in the vehicle width direction, extending in the vehicle fore-and-aft direction, and is configured to restrict movement of the battery 3 in the vehicle width direction and vertical directions, while allowing movement in the fore-and-aft direction.

また、トレーブラケット４９には、図２に示すように、バッテリー３の車幅方向内側の側面に形成されたリブ３９ｃに係合する車両内側係合溝（内側上下方向係合部）５５が車両前後方向に延設され、バッテリー３の車幅方向及び上下方向への移動を拘束すると共に、前後方向への移動は許容するように構成されている。 As shown in FIG. 2, the tray bracket 49 is provided with an inner engagement groove (inner vertical engagement portion) 55 extending in the fore-and-aft direction of the vehicle, which engages with a rib 39c formed on the inner side of the battery 3 in the vehicle width direction, and is configured to restrict movement of the battery 3 in the vehicle width direction and vertical directions, while allowing movement in the fore-and-aft direction.

図２に示すように、外壁部４７のうち第２外壁部４７ｂとトレーブラケット４９とによって、バッテリー３の車幅方向を固定する車幅方向固定手段２９と、上下方向を固定する上下方向固定手段３１と、車両前後方向の移動を可能に支持する前後方向支持手段３３と、を構成している。As shown in FIG. 2, the second outer wall portion 47b of the outer wall portion 47 and the tray bracket 49 constitute a vehicle width direction fixing means 29 that fixes the battery 3 in the vehicle width direction, a vertical direction fixing means 31 that fixes the battery 3 in the vertical direction, and a fore-aft direction support means 33 that supports the battery 3 so as to allow movement in the fore-aft direction of the vehicle.

図４、５に、この車幅方向固定手段２９と上下方向固定手段３１と前後方向支持手段３３について示す。図４は、バッテリー３がトレー２３上に載置されて固定された状態を示す車両前後方向の側面視図であり、図５は、図４のＡ－Ａ線断面図でありバッテリー３の車幅方向の断面図である。 Figures 4 and 5 show the vehicle width direction fixing means 29, the up-down direction fixing means 31, and the front-rear direction support means 33. Figure 4 is a side view in the vehicle front-rear direction showing the state in which the battery 3 is placed and fixed on the tray 23, and Figure 5 is a cross-sectional view of the battery 3 in the vehicle width direction taken along line A-A in Figure 4.

図５に示すように、バッテリー３の車幅方向外側の側面の下端部に形成されたリブ３９ａに、第２外壁部４７ｂの内面に形成された車両外側係合溝（外側上下方向係合部）５３が係合し、リブ３９ａの傾斜面３９ａａに車両外側係合溝５３の傾斜面５３ａが当接する。さらに、バッテリー３の車幅方向内側の側面の下端部に形成されたリブ３９ｃに、トレーブラケット４９の車両内側係合溝（内側上下方向係合部）５５が係合し、リブ３９ｃの傾斜面３９ｃａに車両内側係合溝５５の傾斜面５５ａが当接する。これによって、バッテリー３の車幅方向及び上下方向を固定すると共に、車両前後方向においては移動を可能に支持している。As shown in Figure 5, a rib 39a formed at the lower end of the side surface of the battery 3 on the outer side in the vehicle width direction engages with a vehicle outer engagement groove (outer vertical engagement portion) 53 formed on the inner surface of the second outer wall portion 47b, and the inclined surface 53a of the vehicle outer engagement groove 53 abuts against the inclined surface 39aa of the rib 39a. Furthermore, a vehicle inner engagement groove (inner vertical engagement portion) 55 of the tray bracket 49 engages with a rib 39c formed at the lower end of the side surface of the battery 3 on the inner side in the vehicle width direction, and the inclined surface 55a of the vehicle inner engagement groove 55 abuts against the inclined surface 39ca of the rib 39c. This fixes the battery 3 in the vehicle width direction and up and down directions, and supports it so that it can move in the vehicle fore and aft direction.

また、トレー２３の前端部及び後端部に設けられた前壁部４３と後壁部４５とによって、車両前後方向の移動を所定量に規制する移動量規制手段３５を構成している。In addition, a front wall portion 43 and a rear wall portion 45 provided at the front and rear ends of the tray 23 constitute a movement amount restriction means 35 that restricts movement in the fore-and-aft direction of the vehicle to a predetermined amount.

図４に、この移動量規制手段３５を示す。図４は、バッテリー３がトレー２３上に載置されて固定された状態を示す車両前後方向の側面視図である。バッテリー３の前後のそれぞれの側面の下端部に突設されたリブ３９ｂ、３９ｄの先端部に対して所定量の移動量（隙間Ｓ）が存在するように、前壁部４３と後壁部４５とが設けられる。This movement amount restriction means 35 is shown in Figure 4. Figure 4 is a side view in the vehicle longitudinal direction showing the state in which the battery 3 is placed and fixed on the tray 23. A front wall portion 43 and a rear wall portion 45 are provided so that a predetermined amount of movement (gap S) exists with respect to the tips of the ribs 39b, 39d protruding from the lower ends of the front and rear sides of the battery 3.

以上のバッテリー固定構造２５の一実施形態によれば、バッテリー３は、トレー２３上で車幅方向固定手段２９及び上下方向固定手段３１によって固定されるので、車幅方向の移動及び上下方向の移動は拘束される。さらに、車両前後方向については、前後方向の移動が可能なように前後方向支持手段３３によって支持され、且つ移動量規制手段３５によってその移動量が規制される。すなわち、前後方向には、移動可能な所定の移動量（図４の隙間Ｓ）が設定されて、トレー２３の底壁部４１上に支持される。According to one embodiment of the battery fixing structure 25 described above, the battery 3 is fixed on the tray 23 by the vehicle width direction fixing means 29 and the vertical direction fixing means 31, so that movement in the vehicle width direction and vertical direction is restricted. Furthermore, in the vehicle fore-aft direction, the battery is supported by the fore-aft direction support means 33 so as to allow movement in the fore-aft direction, and the amount of movement is restricted by the movement amount restricting means 35. In other words, a predetermined amount of movement (gap S in FIG. 4) is set in the fore-aft direction, and the battery is supported on the bottom wall portion 41 of the tray 23.

従って、車両の後突時に車両前後方向の衝突荷重が、トレー２３からバッテリー３へと作用する際に、バッテリー３はトレー２３に対して前後方向に移動可能な所定の移動量（隙間Ｓ）が設定されるので、バッテリー３に入力される荷重は隙間Ｓの移動に伴い低減され、バッテリー３への衝撃が緩和される。Therefore, when a collision load in the fore-and-aft direction of the vehicle acts from the tray 23 to the battery 3 during a rear-end collision, a predetermined amount of movement (gap S) is set that allows the battery 3 to move in the fore-and-aft direction relative to the tray 23, so that the load input to the battery 3 is reduced as the gap S moves, and the impact on the battery 3 is mitigated.

また、移動量規制手段３５が、トレー２３の前端部に立設される前壁部４３と、トレー２３の後端部に立設される後壁部４５と、によって構成されるので、バッテリー３の車両前後方向の移動量を確実に所定量に規制できると共に、前壁部４３及び後壁部４５によって、後突時にバッテリー３が前後の車体部材と干渉して損傷することが抑制される。In addition, since the movement amount restriction means 35 is composed of a front wall portion 43 erected at the front end of the tray 23 and a rear wall portion 45 erected at the rear end of the tray 23, the amount of movement of the battery 3 in the fore-and-aft direction of the vehicle can be reliably restricted to a predetermined amount, and the front wall portion 43 and the rear wall portion 45 prevent the battery 3 from interfering with front and rear vehicle body members and being damaged in the event of a rear-end collision.

また、車幅方向固定手段２９と上下方向固定手段３１と前後方向支持手段３３が、外壁部４７の第２外壁部４７ｂと、該第２外壁部４７ｂとバッテリー３を挟むようにトレー２３の底壁部４１の内側端部に着脱自在に取り付けられるトレーブラケット４９と、によって構成されるので、トレーブラケット４９の取り付け及び取り外しによって、車両内側から、つまり荷室７内側からトレー２３上へバッテリー３の装着及びトレー２３上から取り外しが容易にできるようになる（図２の矢印Ｅ方向）。特に、車両のリヤホイールハウス９の後方において車体後壁１１との間に設置されるバッテリー３のように、前後にスペースを確保しにくい部位に設置される場合には効果的である。In addition, the vehicle width direction fixing means 29, the vertical direction fixing means 31, and the front-rear direction support means 33 are composed of the second outer wall portion 47b of the outer wall portion 47 and the tray bracket 49 that is detachably attached to the inner end of the bottom wall portion 41 of the tray 23 so as to sandwich the battery 3 between the second outer wall portion 47b and the tray bracket 49. Therefore, by attaching and removing the tray bracket 49, the battery 3 can be easily attached to and removed from the tray 23 from the inside of the vehicle, that is, from the inside of the luggage compartment 7 (in the direction of arrow E in Figure 2). This is particularly effective when the battery 3 is installed in a location where it is difficult to secure space in the front and rear, such as the battery 3 installed between the rear wheel house 9 and the vehicle rear wall 11 behind the vehicle.

また、車幅方向固定手段２９及び上下方向固定手段３１が、第２外壁部４７ｂの内面に形成される車両外側係合溝５３とトレーブラケット４９に形成される車両内側係合溝５５とによって構成され、バッテリー３の車幅方向外側の側面の下端部に形成されたリブ３９ａの傾斜面３９ａａに、車両外側係合溝５３の傾斜面５３ａが当接し、バッテリー３の車幅方向内側の側面の下端部に形成されたリブ３９ｃの傾斜面３９ｃａに、車両内側係合溝５５の傾斜面５５ａが当接することで、バッテリー３のリブ３９ａ、３９ｃの傾斜面に車幅方向の拘束力及び上下方向の拘束力が作用してバッテリー３の車幅方向及び上下方向の固定が確実に行われる。In addition, the vehicle width direction fixing means 29 and the vertical direction fixing means 31 are composed of a vehicle outer engagement groove 53 formed on the inner surface of the second outer wall portion 47b and a vehicle inner engagement groove 55 formed in the tray bracket 49, and the inclined surface 53a of the vehicle outer engagement groove 53 abuts against the inclined surface 39aa of the rib 39a formed at the lower end of the vehicle width direction outer side of the battery 3, and the inclined surface 55a of the vehicle inner engagement groove 55 abuts against the inclined surface 39ca of the rib 39c formed at the lower end of the vehicle width direction inner side of the battery 3, so that a vehicle width direction restraining force and a vertical direction restraining force act on the inclined surfaces of the ribs 39a, 39c of the battery 3, thereby reliably fixing the battery 3 in the vehicle width direction and in the vertical direction.

また、車両外側係合溝５３及び車両内側係合溝５５は、それぞれ車両前後方向に延在して形成されるので、バッテリー３を車両前後方向には移動可能に支持できる。 In addition, the vehicle outer engagement groove 53 and the vehicle inner engagement groove 55 are each formed to extend in the fore-and-aft direction of the vehicle, so that the battery 3 can be supported movably in the fore-and-aft direction of the vehicle.

バッテリー固定構造２５の幾つかの実施形態では、図２、３に示すように、トレーブラケット４９は、車両前後方向に延在し、トレー２３の底壁部４１へ取り付けられる底面部４９ａと該底面部４９ａから立設される立面部４９ｂとによって断面が略Ｌ字形状に形成されている。底面部４９ａにはトレーブラケット４９をトレー２３の底壁部４１に取り付けるための一箇所のボルト締結部５７と、トレーブラケット４９の回止め部５９とが設けられる。また、立面部４９ｂには、車両内側係合溝５５が形成されている。2 and 3, in some embodiments of the battery fixing structure 25, the tray bracket 49 extends in the fore-and-aft direction of the vehicle and has a substantially L-shaped cross section formed by a bottom surface portion 49a attached to the bottom wall portion 41 of the tray 23 and an upright surface portion 49b erected from the bottom surface portion 49a. The bottom surface portion 49a is provided with a bolt fastening portion 57 at one location for attaching the tray bracket 49 to the bottom wall portion 41 of the tray 23, and a rotation stop portion 59 for the tray bracket 49. In addition, a vehicle inner engagement groove 55 is formed in the upright surface portion 49b.

このような構成によれば、トレーブラケット４９が、ボルト締結部５７へのボルト６１の締結によってトレー２３の底壁部４１上に位置決めされて固定されるので、トレーブラケット４９のトレー２３上への取り付けを安定して確実に行うことができる。 With this configuration, the tray bracket 49 is positioned and fixed on the bottom wall portion 41 of the tray 23 by fastening the bolt 61 to the bolt fastening portion 57, so that the tray bracket 49 can be stably and reliably attached to the tray 23.

さらに、ボルト締結部５７は一箇所であるので、トレーブラケット４９の取り付け作業及び取り外し作業を簡単に行うことができ、バッテリー３のトレー２３上への装着及び取り外しが容易になる。 Furthermore, since there is only one bolt fastening portion 57, the tray bracket 49 can be easily attached and detached, making it easy to mount and remove the battery 3 on the tray 23.

また、回止め部５９によって、トレーブラケット４９が回り止めされて位置決めされるので、トレーブラケット４９によるバッテリー３の支持が安定し、バッテリー３の前後方向の移動を制限することに寄与する。 In addition, the anti-rotation portion 59 prevents the tray bracket 49 from rotating and positions it in place, stabilizing support of the battery 3 by the tray bracket 49 and helping to limit movement of the battery 3 in the forward and backward directions.

バッテリー固定構造２５の幾つかの実施形態では、図２、３に示すように、トレーブラケット４９の立面部４９ｂの上端部分には、バッテリー３側へ折り曲げられて車両内側係合溝５５が形成され、この車両内側係合溝５５には、バッテリー３のリブ３９ｃの傾斜面３９ｃａに当接する傾斜面（トレーブラケット当接部）５５ａが車両前後方向に延在されている。 In some embodiments of the battery fixing structure 25, as shown in Figures 2 and 3, the upper end portion of the vertical portion 49b of the tray bracket 49 is bent toward the battery 3 to form a vehicle inner engagement groove 55, and this vehicle inner engagement groove 55 has an inclined surface (tray bracket abutment portion) 55a that abuts against the inclined surface 39ca of the rib 39c of the battery 3 and extends in the fore-and-aft direction of the vehicle.

さらに、トレーブラケット４９の両端部には、ボルト締結部５７へのボルト６１の締結時に、傾斜面５５ａをバッテリー３のリブ３９ｃを車両下方及び車両外方に押圧する押圧手段６３が形成されている。 Furthermore, at both ends of the tray bracket 49, a pressing means 63 is formed which presses the inclined surface 55a against the rib 39c of the battery 3 downward and outward from the vehicle when the bolt 61 is fastened to the bolt fastening portion 57.

さらに、トレーブラケット４９の底面部４９ａの長手方向の中央部にボルト締結部５７が設けられ、底面部４９ａの長手方向の両端部に車幅方向内側が上方に向かって折り曲げられた折返部６５が形成されている。そして、その折返部６５の位置に対応するトレー２３の底壁部４１には、図３に示すように車幅方向内側に向けて高くなるように傾斜した突起部６７が形成されている。Furthermore, a bolt fastening portion 57 is provided in the longitudinal center of the bottom surface portion 49a of the tray bracket 49, and folded portions 65 are formed at both longitudinal ends of the bottom surface portion 49a by bending the inside in the vehicle width direction upward. And, a protrusion 67 is formed on the bottom wall portion 41 of the tray 23 corresponding to the position of the folded portion 65 so as to be higher toward the inside in the vehicle width direction, as shown in FIG. 3.

なお、トレーブラケット４９の底面部４９ａには、補強用のビード６９や、折返部６５の製造を容易化する切欠き７１が形成されている。In addition, a reinforcing bead 69 and a notch 71 that facilitates the manufacture of the folded portion 65 are formed on the bottom surface 49a of the tray bracket 49.

押圧手段６３は、トレーブラケット４９の底面部４９ａの上方に折り曲げられた折返部６５と、トレー２３の底壁部４１に形成された突起部６７とで構成される。ボルト締結部５７へのボルト６１の締結時に、突起部６７の上面に折返部６５が圧接されて、トレーブラケット４９の立面部４９ｂの前後方向の両端部においては、バッテリー３側に倒れ込む力が作用する。これによって、トレーブラケット４９の立面部４９ｂの前後方向の両端部の傾斜面（トレーブラケット当接部）５５ａが、リブ３９ｃを車両下方向及び車幅方向外側方向に押圧する。The pressing means 63 is composed of a folded portion 65 bent upward from the bottom surface portion 49a of the tray bracket 49, and a protrusion 67 formed on the bottom wall portion 41 of the tray 23. When the bolt 61 is fastened to the bolt fastening portion 57, the folded portion 65 is pressed against the upper surface of the protrusion 67, and a force is applied to both ends of the vertical portion 49b of the tray bracket 49 in the fore-and-aft direction toward the battery 3. As a result, the inclined surfaces (tray bracket abutment portions) 55a at both ends of the vertical portion 49b of the tray bracket 49 in the fore-and-aft direction press the rib 39c downward and outward in the vehicle width direction.

このような構成によれば、ボルト締結時のトレーブラケット４９の締め付け力を、押圧手段６３を介してトレーブラケット４９の前後両端部分からリブ３９ｃ側に集中的に作用させることができるので、一箇所のボルト締結によって、バッテリー３の車幅方向の固定と、上下方向の固定と、車両前後方向の移動可能な支持とを安定して作用させることができる。 With this configuration, the tightening force of the tray bracket 49 when the bolts are tightened can be concentrated from both the front and rear ends of the tray bracket 49 to the rib 39c side via the pressing means 63, so that the battery 3 can be stably fixed in the vehicle width direction, fixed in the up and down direction, and supported so that it can be moved in the vehicle fore and aft direction by tightening the bolts at a single point.

また、トレー２３の底壁部４１には、図３に示すようにトレーブラケット４９の折返部６５が当接する位置に突起部６７が形成されるので、車両前後方向の２箇所の突起部６７、６７の間には溝部６８が形成され、溝部６８によってトレーブラケット４９の回止め部５９が構成される。すなわち、溝部６８内にトレーブラケット４９の折返部６５が形成されていない中央部を挟み込むことでトレーブラケット４９の回り止めが行われる。また、回り止めは、突起部６７の上面に折返部６５が圧接されることによっても行われる。 In addition, a protrusion 67 is formed on the bottom wall 41 of the tray 23 at a position where the folded portion 65 of the tray bracket 49 abuts, as shown in Figure 3, and a groove 68 is formed between the two protrusions 67, 67 in the front-to-rear direction of the vehicle, and the groove 68 forms the rotation prevention portion 59 of the tray bracket 49. In other words, the rotation of the tray bracket 49 is prevented by sandwiching the central portion of the tray bracket 49 where the folded portion 65 is not formed, inside the groove 68. The rotation prevention is also achieved by pressing the folded portion 65 against the upper surface of the protrusion 67.

（トレー固定構造）次に、トレー固定構造２７の一実施形態について説明する。図２に示すようにトレー２３の底壁部４１には、トレー２３を車体に取り付けるボルト７３が貫通する複数、ここでは例えば４箇所のトレー取付部７５ａ、７５ｂ、７５ｃ、７５ｄが設けられている。車幅方向外側の２箇所のトレー取付部７５ａ、７５ｂは、ボルト７３の締結作業性を考慮してボルト軸が車両内側に斜めになっている。(Tray fixing structure) Next, one embodiment of the tray fixing structure 27 will be described. As shown in Fig. 2, the bottom wall portion 41 of the tray 23 is provided with a plurality of, for example, four tray mounting portions 75a, 75b, 75c, and 75d, through which bolts 73 for mounting the tray 23 to the vehicle body pass. The bolt axes of the two tray mounting portions 75a, 75b on the outer side in the vehicle width direction are inclined toward the inside of the vehicle to facilitate the fastening of the bolts 73.

４箇所のトレー取付部７５ａ、７５ｂ、７５ｃ、７５ｄのうち車幅方向において最も内側に位置されるトレー取付部７５ｄは、サイドメンバ１５に取り付けられ、残りの複数、ここでは３箇所のトレー取付部７５ａ、７５ｂ、７５ｃは、リヤフロアパネル１３に取り付けられる。Of the four tray mounting portions 75a, 75b, 75c, and 75d, the tray mounting portion 75d that is located most inward in the vehicle width direction is attached to the side member 15, and the remaining multiple tray mounting portions, here three, 75a, 75b, and 75c, are attached to the rear floor panel 13.

図６、７に、トレー２３が固定される車体側の構成を示す。サイドメンバ１５は、リヤフロアパネル１３の下面に、リヤホイールハウス９の側部に沿って逆ハット形（上方が開口した凹形状）断面を有して、左右一対、車両前後方向に延在している。6 and 7 show the vehicle body configuration to which the tray 23 is fixed. The side members 15 are attached to the underside of the rear floor panel 13 along the sides of the rear wheel house 9, and have an inverted hat-shaped (concave shape that opens upward) cross section. A pair of left and right side members 15 extend in the longitudinal direction of the vehicle.

トレー２３の底壁部４１とリヤフロアパネル１３との間には、バッテリブラケット７７が設けられ、トレー取付部７５ａ、７５ｂ、７５ｃ、７５ｄは、リヤフロアパネル１３のリヤフロア面から一段上部に位置されるようになっている。A battery bracket 77 is provided between the bottom wall portion 41 of the tray 23 and the rear floor panel 13, and the tray mounting portions 75a, 75b, 75c, and 75d are positioned one step above the rear floor surface of the rear floor panel 13.

このバッテリブラケット７７は、図６に示すように、車幅方向において最も内側に位置されるトレー取付部７５ｄが取り付けられる第１バッテリブラケット７９と、残りの３箇所のトレー取付部７５ａ、７５ｂ、７５ｃが取り付けられる第２バッテリブラケット８１とに分割されて、別々の部品として設置されている。As shown in FIG. 6, the battery bracket 77 is divided into a first battery bracket 79 to which the tray mounting portion 75d, which is located innermost in the vehicle width direction, is attached, and a second battery bracket 81 to which the remaining three tray mounting portions 75a, 75b, and 75c are attached, and these are installed as separate parts.

以上のトレー固定構造２７の一実施形態によれば、図８に示すように、車両の後突時に、車両後端部に車幅方向に配置されたリヤバンパービーム８３に入力した後突荷重Ｆは、リヤバンパービーム８３を支持し、且つ内部にクラッシュボックスを有するバンパーステー８５に伝わる。バンパーステー８５はサイドメンバ１５の後端部に結合しているため、後突荷重Ｆは、リヤフロアパネル１３の下面に車両前後方向に延在して設けられるサイドメンバ１５を伝わりバッテリー３を載置しているトレー２３にも掛かる。 According to one embodiment of the tray fixing structure 27 described above, as shown in Figure 8, in the event of a rear-end collision, the rear-end collision load F input to the rear bumper beam 83 arranged in the vehicle width direction at the rear end of the vehicle is transmitted to the bumper stay 85 which supports the rear bumper beam 83 and has a crash box therein. Because the bumper stay 85 is connected to the rear end of the side member 15, the rear-end collision load F is transmitted through the side member 15 which is provided on the underside of the rear floor panel 13 and extends in the fore-aft direction of the vehicle, and is also applied to the tray 23 on which the battery 3 is placed.

その際に、トレー２３を車体に取り付ける４箇所のトレー取付部７５ａ、７５ｂ、７５ｃ、７５ｄのうち車幅方向において最も内側に位置されるトレー取付部７５ｄは、サイドメンバ１５に取り付けられ（図８のＣ部）、残りの３箇所のトレー取付部７５ａ、７５ｂ、７５ｃは、リヤフロアパネル１３に取り付けられる（図８のＤ部）ので、車幅方向において最も内側に位置されるトレー取付部７５ｄのみに強い後突荷重Ｆが掛かる。At that time, of the four tray mounting portions 75a, 75b, 75c, 75d that attach the tray 23 to the vehicle body, the tray mounting portion 75d that is positioned most inward in the vehicle width direction is attached to the side member 15 (part C in Figure 8), and the remaining three tray mounting portions 75a, 75b, 75c are attached to the rear floor panel 13 (part D in Figure 8), so that a strong rear impact load F is applied only to the tray mounting portion 75d that is positioned most inward in the vehicle width direction.

従って、最も内側のトレー取付部７５ｄでは破断が生じやすく、残りのトレー取付部７５ａ、７５ｂ、７５ｃは、３箇所でリヤフロアパネル１３に取り付けられるので、衝突荷重は分散されるとともに、衝突荷重が直接伝達されるサイドメンバ１５ではなくリヤフロアパネル１３に取り付けられるため、これらトレー取付部７５ａ、７５ｂ、７５ｃは破断しにくい。Therefore, breakage is likely to occur at the innermost tray mounting portion 75d, but the remaining tray mounting portions 75a, 75b, 75c are attached to the rear floor panel 13 at three points, so that the collision load is distributed and, since they are attached to the rear floor panel 13 rather than to the side member 15 to which the collision load is directly transmitted, these tray mounting portions 75a, 75b, 75c are less likely to break.

従って、車幅方向において最も内側に位置されるトレー取付部７５ｄのみを積極的に破断させることによって、後突時にトレー２３に作用する後突荷重Ｆを吸収して緩和できる。また、残りのトレー取付部７５ａ、７５ｂ、７５ｃは、破断しにくいためトレー２３にはバッテリー３が保持される。Therefore, by actively breaking only the tray attachment portion 75d, which is located at the innermost position in the vehicle width direction, the rear impact load F acting on the tray 23 during a rear impact can be absorbed and mitigated. In addition, the remaining tray attachment portions 75a, 75b, and 75c are not easily broken, so the battery 3 is held in the tray 23.

なお、トレー取付部７５ｄの破断とは、ボルト貫通孔の周縁部がボルト７３によって圧壊したり、ボルト貫通孔の周縁部に亀裂が生じたりして破断することである。In addition, fracture of the tray mounting portion 75d refers to fracture caused by the peripheral portion of the bolt through hole being crushed by the bolt 73 or by the occurrence of a crack in the peripheral portion of the bolt through hole.

バッテリブラケット７７によって、トレー取付部７５ａ、７５ｂ、７５ｃ、７５ｄは、リヤフロア面から一段上部に配置されているので、リヤフロアを伝わる後突時の衝突荷重の流れはバッテリブラケット７７によって吸収されてトレー取付部７５ａ、７５ｂ、７５ｃ、７５ｄに入力されるため、トレー２３へ入力される後突時の衝突荷重は緩和される。 The battery bracket 77 positions the tray mounting portions 75a, 75b, 75c, and 75d one step above the rear floor surface, so that the flow of the collision load during a rear collision that travels along the rear floor is absorbed by the battery bracket 77 and input to the tray mounting portions 75a, 75b, 75c, and 75d, thereby mitigating the collision load input to the tray 23 during a rear collision.

また、バッテリブラケット７７は、第１バッテリブラケット７９と第２バッテリブラケット８１とに分割して設置され、第１バッテリブラケット７９の部分は、リヤフロアパネル１３を介してサイドメンバ１５に取り付けられ、第２バッテリブラケット８１の部分は、リヤフロアパネル１３に取り付けられるので、車幅方向において最も内側に位置されるトレー取付部７５ｄには、サイドメンバ１５から第１バッテリブラケット７９を介して衝突荷重が効率よく掛かりトレー取付部７５ｄの破断をより効果的に生じさせることができる。In addition, the battery bracket 77 is divided into a first battery bracket 79 and a second battery bracket 81, with the first battery bracket 79 portion being attached to the side member 15 via the rear floor panel 13 and the second battery bracket 81 portion being attached to the rear floor panel 13. As a result, a collision load is efficiently applied from the side member 15 via the first battery bracket 79 to the tray mounting portion 75d, which is positioned most inward in the vehicle width direction, and this can more effectively cause the tray mounting portion 75d to break.

トレー固定構造２７の幾つかの実施形態では、図６に示すように、第２バッテリブラケット８１は、車両のリヤホイールハウス９の後方と車体後壁１１の前方との間のリヤフロアパネル１３上に溶接されて取り付けられ、トレー２３を取り付けるボルト７３が螺合するナット８７が膨出部の頂面に溶接されている。In some embodiments of the tray fixing structure 27, as shown in FIG. 6, the second battery bracket 81 is welded and attached onto the rear floor panel 13 between the rear of the vehicle's rear wheel house 9 and the front of the rear body wall 11, and a nut 87 into which a bolt 73 for attaching the tray 23 screws is welded to the top surface of the bulge.

また、第１バッテリブラケット７９は、一端部がリヤフロアパネル１３を介してサイドメンバ１５の後端部に結合し、他端部が車体後壁１１に結合して車体後壁１１を補強するブレース部材（補強部材）８９に設けられている。そして、第１バッテリブラケット７９の膨出部の頂面には、トレー２３を取り付けるボルト７３が螺合するナット８７が溶接されている。One end of the first battery bracket 79 is connected to the rear end of the side member 15 via the rear floor panel 13, and the other end is connected to the rear wall 11 of the vehicle body and is provided on a brace member (reinforcing member) 89 that reinforces the rear wall 11. A nut 87 into which a bolt 73 for attaching the tray 23 is screwed is welded to the top surface of the bulging portion of the first battery bracket 79.

このブレース部材８９は、一端部がサイドメンバ１５の後端部の略水平状のサイドメンバ１５のフランジ部にボルト締結し、他端部が車体後壁１１である略垂直状のリヤピラー１９の下端部及びリヤエンドクロスメンバ２１の端部にボルト締結して、車両前後方向に傾斜して架け渡す板金製の部材であり、所謂ブレース構造によって車体後壁１１を補強している。The brace member 89 is a sheet metal member that is spanned at an angle in the fore-and-aft direction of the vehicle, with one end bolted to the approximately horizontal flange portion of the side member 15 at the rear end of the side member 15 and the other end bolted to the lower end of the approximately vertical rear pillar 19, which is the rear wall 11 of the vehicle body, and the end of the rear end cross member 21, reinforcing the rear wall 11 of the vehicle body by means of a so-called brace structure.

なお、図６には、第１バッテリブラケット７９は、ブレース部材８９とは別の部品として形成されて溶接して取り付けられる例を示すが、ブレース部材８９の一部を膨出させて一体に形成してもよい。 Note that Figure 6 shows an example in which the first battery bracket 79 is formed as a separate part from the brace member 89 and attached by welding, but it may also be formed integrally with the brace member 89 by bulging a portion of the brace member 89.

このような構成によれば、第１バッテリブラケット７９が、サイドメンバ１５と車体後壁１１であるリヤピラー１９の下端部及びリヤエンドクロスメンバ２１の端部とを架け渡すブレース部材８９に設けられるので、サイドメンバ１５から伝達される後突荷重とリヤピラー１９の下端部及びリヤエンドクロスメンバ２１の端部から伝達される後突荷重との両方が作用する。従って、後突荷重を効果的に第１バッテリブラケット７９に伝達できる。 With this configuration, the first battery bracket 79 is provided on a brace member 89 that spans between the side member 15 and the lower end of the rear pillar 19, which is the rear wall 11 of the vehicle body, and the end of the rear-end cross member 21, so that both the rear-impact load transmitted from the side member 15 and the rear-impact load transmitted from the lower end of the rear pillar 19 and the end of the rear-end cross member 21 act on the first battery bracket 79. Therefore, the rear-impact load can be effectively transmitted to the first battery bracket 79.

トレー固定構造２７の幾つかの実施形態では、図９に示すように、トレー２３の底壁部４１は、平面視で略四角形状を有し、リヤホイールハウス９側の車両内側の角部Ｇには面取９１が形成される。図９は、バッテリブラケット７７上にトレー２３が取り付けられた状態を示す。In some embodiments of the tray fixing structure 27, as shown in Fig. 9, the bottom wall portion 41 of the tray 23 has a generally rectangular shape in plan view, and a chamfer 91 is formed at the corner G on the vehicle inner side facing the rear wheel house 9. Fig. 9 shows the tray 23 attached to the battery bracket 77.

このような構成によれば、車幅方向において最も内側に位置されるトレー取付部７５ｄは、サイドメンバ１５に取り付けられ、残りの３箇所のトレー取付部７５ａ、７５ｂ、７５ｃは、リヤフロアパネル１３に取り付けられるので、車幅方向において最も内側に位置されるトレー取付部７５ｄのみに強い後突荷重Ｆが掛かるので、残りの３箇所には右回りの回転力Ｒが生じる（図８参照）。そして、トレー２３及びバッテリー３にも右回りの回転力が生じる。With this configuration, the tray mounting portion 75d, which is located most inward in the vehicle width direction, is attached to the side member 15, and the remaining three tray mounting portions 75a, 75b, and 75c are attached to the rear floor panel 13. Therefore, a strong rear impact load F is applied only to the tray mounting portion 75d, which is located most inward in the vehicle width direction, and a clockwise rotational force R is generated in the remaining three portions (see FIG. 8). A clockwise rotational force is also generated in the tray 23 and the battery 3.

その際に、図９に示すように、トレー２３の底壁部４１の略四角形状のうちのリヤホイールハウス９側の車両内側の角部Ｇには面取９１が形成されているので、トレー２３が右回りに回転しても、角部Ｇがリヤホイールハウス９に干渉する干渉量が低減される。In this case, as shown in FIG. 9, a chamfer 91 is formed at the corner G on the vehicle inner side facing the rear wheel house 9 of the approximately rectangular shape of the bottom wall portion 41 of the tray 23, so that even when the tray 23 rotates clockwise, the amount of interference of the corner G with the rear wheel house 9 is reduced.

さらに、図９に示すように、トレー２３の底壁部４１の車体後壁１１側の一辺部には、底壁部４１から後壁部４５が立設されているので、後壁部４５（図９のＨ部）においては、トレー２３及びバッテリー３が右回りに回転し、さらに車体後壁１１が車両前方に移動しても、後壁部４５によって、バッテリー３と車体後壁１１のリヤピラー１９の下端部及びリヤエンドクロスメンバ２１の端部との干渉が防止されてバッテリー３が保護される。Furthermore, as shown in FIG. 9, a rear wall portion 45 is erected from the bottom wall portion 41 of the tray 23 on one side facing the rear wall 11 of the vehicle body. Therefore, even if the tray 23 and the battery 3 rotate clockwise at the rear wall portion 45 (part H in FIG. 9) and the rear wall 11 moves toward the front of the vehicle, the rear wall portion 45 prevents interference between the battery 3 and the lower end of the rear pillar 19 of the rear wall 11 of the vehicle body and the end of the rear end cross member 21, thereby protecting the battery 3.

以上説明した実施形態において、トレー２３は、樹脂製であり一体成形されることを特徴としている。このような構成によれば、トレー２３は、樹脂製で一体成形されるので、トレー２３の製造が容易になる。また、トレー２３が樹脂製であるため、後突荷重が強く掛かるサイドメンバ１５に取りけられるトレー取付部７５ｄにおいて、ボルト７３によってボルト孔の周縁部に破断が生じやすくなる。In the embodiment described above, the tray 23 is characterized by being made of resin and molded as a single piece. With this configuration, the tray 23 is made of resin and molded as a single piece, which makes it easy to manufacture the tray 23. In addition, because the tray 23 is made of resin, the bolts 73 are likely to cause breakage around the bolt holes in the tray attachment portion 75d attached to the side member 15, which is subjected to a strong rear-end collision load.

また、以上説明した実施形態によれば、バッテリー固定構造２５及びトレー固定構造２７のそれぞれの固定構造において、車両のリヤホイールハウス９の後方と車体後壁１１の前方との間に設置されるバッテリー３に入力される後突時の衝突荷重を緩和することが可能であるが、両方の固定構造を採用することでバッテリー３の保護が一層効果的に得られる。 Furthermore, according to the embodiment described above, each of the fixing structures of the battery fixing structure 25 and the tray fixing structure 27 can mitigate the collision load during a rear-end collision input to the battery 3 installed between the rear of the vehicle's rear wheel house 9 and the front of the rear wall 11 of the vehicle body, but by adopting both fixing structures, the battery 3 can be protected even more effectively.

本発明の少なくとも一つの実施形態によれば、車両のリヤホイールハウスの後方において車体後壁との間に設置される車載機器に入力される後突時の衝突荷重を緩和して車載機器を保護することができるので、車載機器の固定構造への利用に適している。 According to at least one embodiment of the present invention, the collision load input to the on-board equipment installed between the rear wheel house of the vehicle and the rear wall of the vehicle body at the rear of the vehicle can be mitigated during a rear collision to protect the on-board equipment, making it suitable for use in a fixing structure for on-board equipment.

１車載機器の固定構造
３バッテリー（車載機器）
５車両
７荷室
９リヤホイールハウス
１１車体後壁
１３リヤフロアパネル
１５サイドメンバ
２３トレー
２５バッテリー固定構造
２７トレー固定構造
２９車幅方向固定手段
３１上下方向固定手段
３３前後方向支持手段
３５移動量規制手段
３９ａ、３９ｂ、３９ｃ、３９ｄリブ
３９ａａ、３９ｃａ、５３ａ、５５ａ傾斜面
４１底壁部
４３前壁部
４５後壁部
４７外壁部
４７ａ第１外壁部
４７ｂ第２外壁部
４７ｃ第３外壁部
４９トレーブラケット
４９ａ底面部
４９ｂ立面部
５３車両外側係合溝（外側上下方向係合部）
５５車両内側係合溝（内側上下方向係合部）
５７ボルト締結部
５９トレーブラケットの回止め部
６１、７３ボルト
６３押圧手段
６５折返部
６７突起部
６８溝部
７５ａ、７５ｂ、７５ｃ、７５ｄトレー取付部
７７バッテリブラケット
７９第１バッテリブラケット
８１第２バッテリブラケット
８９ブレース部材（補強部材）
９１面取
Ｆ後突荷重
Ｇ角部
Ｓ隙間 1. Vehicle equipment fixing structure 3. Battery (vehicle equipment)
Description of the Reference Signs 5: vehicle 7: luggage compartment 9: rear wheel house 11: vehicle body rear wall 13: rear floor panel 15: side member 23: tray 25: battery fixing structure 27: tray fixing structure 29: vehicle width direction fixing means 31: vertical direction fixing means 33: front-rear direction support means 35: movement amount restricting means 39a, 39b, 39c, 39d: ribs 39aa, 39ca, 53a, 55a: inclined surface 41: bottom wall portion 43: front wall portion 45: rear wall portion 47: outer wall portion 47a: first outer wall portion 47b: second outer wall portion 47c: third outer wall portion 49: tray bracket 49a: bottom surface portion 49b: vertical surface portion 53: vehicle outer engaging groove (outer vertical engaging portion)
55 Vehicle inner engagement groove (inner vertical engagement portion)
57 Bolt fastening portion 59 Anti-rotation portion 61, 73 Bolt 63 Pressing means 65 Folded portion 67 Protrusion 68 Groove portions 75a, 75b, 75c, 75d Tray mounting portion 77 Battery bracket 79 First battery bracket 81 Second battery bracket 89 Brace member (reinforcement member)
91 Chamfer F Rear impact load G Corner S Gap

Claims

A fixing structure for an in-vehicle device that is installed between a rear wheel house of a vehicle and a rear wall of the vehicle body,
a side member provided on a lower surface of a rear floor panel on an inner side of the rear wheel house, the side member extending in a front-rear direction of the vehicle;
A tray for placing the in-vehicle device;
a plurality of tray attachment portions provided on a bottom wall portion of the tray and through which bolts for attaching the tray to a vehicle body pass;
A fixing structure for vehicle-mounted equipment, characterized in that among the multiple tray mounting portions, only the tray mounting portion that is located most inward in the vehicle width direction and most rearward in the vehicle fore-and-aft direction is attached to the side member, and the remaining multiple tray mounting portions are attached to the rear floor panel.

The vehicle-mounted device fixing structure according to claim 1, characterized in that a battery bracket is provided between the rear floor surface and the tray mounting portion so that the tray mounting portion is positioned above the rear floor surface.

The vehicle-mounted device fixing structure according to claim 2, characterized in that the battery bracket is divided into a first battery bracket to which the tray mounting portion located in the innermost position in the vehicle width direction and in the rearmost position in the vehicle front-rear direction is attached, and a second battery bracket to which the remaining tray mounting portions are attached.

The vehicle-mounted device fixing structure according to claim 3, characterized in that one end of the first battery bracket is connected to the rear end of the side member via the rear floor panel, and the other end is connected to the rear wall of the vehicle body, and is provided on a reinforcing member that bridges between the side member and the rear wall of the vehicle body.

The fixing structure for on-vehicle equipment according to any one of claims 1 to 4, characterized in that the bottom wall of the tray on which the on-vehicle equipment is placed has a substantially rectangular shape in a plan view, and the corners on the vehicle inner side on the rear wheel house side are chamfered.

The fixing structure for on-vehicle equipment according to any one of claims 1 to 5, characterized in that the bottom wall of the tray on which the on-vehicle equipment is placed has a substantially rectangular shape in a plan view, and a rear wall is erected on one side of the tray on the rear wall side of the vehicle body.

The vehicle-mounted device fixing structure according to any one of claims 1 to 6, characterized in that the tray is made of resin and is integrally molded.