JP2010012963A - Lower part structure for fuel cell vehicle - Google Patents

Lower part structure for fuel cell vehicle Download PDF

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JP2010012963A
JP2010012963A JP2008175262A JP2008175262A JP2010012963A JP 2010012963 A JP2010012963 A JP 2010012963A JP 2008175262 A JP2008175262 A JP 2008175262A JP 2008175262 A JP2008175262 A JP 2008175262A JP 2010012963 A JP2010012963 A JP 2010012963A
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fuel cell
vehicle
frames
motor
disposed
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JP5239563B2 (en
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Kunihiro Hirose
邦弘 広瀬
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Suzuki Motor Corp
スズキ株式会社
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Abstract

<P>PROBLEM TO BE SOLVED: To enhance maintenance property of an accesory component by protecting a fuel cell and the accesory component for the fuel cell when impact force is applied to the front part of a vehicle. <P>SOLUTION: In the lower part structure for the fuel cell vehicle, a pair of left and right side frames extending in a vehicle longitudinal direction is arranged in a motor room at a front part of the vehicle, the fuel cell and the motor are arranged between the side frames in the state that they are arranged in a vehicle longitudinal direction, a front part cross member for connecting the side frames is arranged at a lower part front side of the battery cell, a rear part cross member for connecting the side frames is arranged at a lower part rear side of the motor, and the accesory component for the fuel cell is mounted to the fuel cell. The accesory components for the fuel cell are arranged at lower positions than a side frame at both ends in the vehicle left/right direction of the fuel cell, a pair of left and right side members for connecting the front part cross member and the rear part cross member is arranged below the accesory component, and the side member is formed in the shape curved to a lower side of the vehicle. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

この発明は燃料電池車両の下部構造に係り、特に、車両前部のモータルームに燃料電池とモータと燃料電池用の補機部品とを配設した燃料電池車両の下部構造に関する。   The present invention relates to a lower structure of a fuel cell vehicle, and more particularly to a lower structure of a fuel cell vehicle in which a fuel cell, a motor, and auxiliary parts for the fuel cell are arranged in a motor room at the front of the vehicle.
燃料電池によりモータを駆動する燃料電池車両については、車両前部のモータルームに車両前後方向に延びる左右一対のサイドフレームを配設し、サイドフレームの間に燃料電池と前輪を駆動するモータとを車両前後方向に並べた状態で配設する下部構造が知れられている。
このような燃料電池車両の下部構造において、燃料電池は、必要な発電量を確保するため、車両左右方向両端部が左右一対のサイドフレームの近傍まで延びる形状に形成される一方、車両前部に衝撃力が作用した場合に衝撃を吸収する空間を確保するため、車両前後方向の寸法が車幅方向の寸法より小さい形状に形成されている。
For a fuel cell vehicle in which a motor is driven by a fuel cell, a pair of left and right side frames extending in the vehicle front-rear direction are disposed in a motor room at the front of the vehicle, and a fuel cell and a motor for driving the front wheels are disposed between the side frames. A lower structure that is arranged in a state of being arranged in the vehicle front-rear direction is known.
In such a lower structure of the fuel cell vehicle, the fuel cell is formed in a shape in which both ends in the left-right direction of the vehicle extend to the vicinity of the pair of left and right side frames in order to secure a necessary power generation amount, In order to secure a space for absorbing an impact when an impact force is applied, the dimension in the vehicle front-rear direction is smaller than the dimension in the vehicle width direction.
従来の燃料電池車両の下部構造には、車両前後方向に延びる左右一対のサイドフレームの後部を支持フレームにより車両左右方向に連絡し、支持フレームの上側にモータを搭載することで、燃料電池車両の前部に衝撃力が作用した場合に、支持フレームの形成領域において変形を防止し、燃料電池を保護するものがある。
特開2007−245954号公報
The lower structure of a conventional fuel cell vehicle is connected to the left and right sides of the pair of left and right side frames extending in the vehicle longitudinal direction by a support frame, and a motor is mounted on the upper side of the support frame. Some of them protect the fuel cell by preventing deformation in the region where the support frame is formed when an impact force acts on the front part.
JP 2007-245954 A
従来の燃料電池車両の下部構造には、車両前部のモータルームに、複数のスタックを備えた燃料電池と燃料電池に燃料ガス・酸化ガス・冷媒を給排する流体給排手段と駆動モータとを備えた燃料電池車両において、スタックの並び方向を車両前後方向に向けて燃料電池を駆動モータの上側に配置し、流体給排手段を燃料電池の最下部左右端で且つ駆動モータの上側左右端に配置することで、燃料電池の下面をスタックの単電池積載スペースに利用し、燃料電池の出力増加を図ったものがある。
特開2007−145309号公報
A conventional fuel cell vehicle substructure includes a fuel cell having a plurality of stacks in a motor room at the front of the vehicle, a fluid supply / discharge means for supplying and discharging fuel gas, oxidizing gas, and refrigerant to the fuel cell, and a drive motor. The fuel cell is provided on the upper side of the drive motor with the stacking direction in the vehicle front-rear direction, and the fluid supply / discharge means is the lower left and right ends of the fuel cell and the upper left and right ends of the drive motor. In some cases, the output of the fuel cell is increased by using the lower surface of the fuel cell as a unit cell mounting space of the stack.
JP 2007-145309 A
ところで、燃料電池車両は、ガソリンを燃料とするエンジンを搭載したガソリン車等と比較して部品点数が多く、各構成部品も大きいため、モータルーム内が構成部品により占有されて、衝撃吸収用の空間が狭くなっている。例えば、燃料電池には、燃料ガスを供給する燃料供給装置や、冷却水を循環させる電動式ウオータポンプ等の、燃料電池用の多数の補機部品が装着されている。このため、これらの補機部品を燃料電池の前方に配置した場合には、衝撃吸収用の空間が減少し、燃料電池車両の前部に衝撃力が作用した場合に、補機部品が燃料電池に衝突するおそれがあった。
これに対して、補機部品を燃料電池と左右一対のサイドフレームの下方に配役した場合は、車両前後方向の空間は確保できる。しかし、補強部材として左右一対のサイドフレーム間を連絡する前部クロスメンバが燃料電池の下部前方に配設されている場合は、車両前部に作用する衝撃力によって前部クロスメンバが車両後方へ大きく移動し、燃料電池及び補機部品に衝突するおそれがあった。
このため、モータルームを、前部クロスメンバの車両後方への移動を抑制するとともに少ない空間で衝撃力を吸収できる構造とし、燃料電池や燃料電池用の補機部品を保護することが求められていた。
また、上記構造を実現するに当たって、補機部品へのアクセスが阻害され、メンテナンス性が低下しないよう配慮することが求められていた。
By the way, the fuel cell vehicle has a larger number of parts and larger components than a gasoline vehicle equipped with an engine that uses gasoline as fuel, so the motor room is occupied by the components, and is used for shock absorption. The space is narrow. For example, a fuel cell is equipped with a number of auxiliary parts for the fuel cell, such as a fuel supply device that supplies fuel gas and an electric water pump that circulates cooling water. For this reason, when these auxiliary machine parts are arranged in front of the fuel cell, the space for shock absorption is reduced, and when an impact force acts on the front part of the fuel cell vehicle, the auxiliary machine parts are moved to the fuel cell. There was a risk of collision.
On the other hand, when the accessory parts are cast below the fuel cell and the pair of left and right side frames, a space in the vehicle front-rear direction can be secured. However, when the front cross member that communicates between the pair of left and right side frames as the reinforcing member is disposed in front of the lower part of the fuel cell, the front cross member is moved rearward by the impact force acting on the front of the vehicle. There was a risk that it would move greatly and collide with fuel cell and auxiliary equipment parts.
For this reason, it is required that the motor room has a structure capable of suppressing the movement of the front cross member toward the rear of the vehicle and absorbing the impact force in a small space to protect the fuel cell and the auxiliary parts for the fuel cell. It was.
Further, in realizing the above structure, it has been required to consider that access to auxiliary equipment parts is hindered and maintenance is not deteriorated.
この発明は、車両前部に衝撃力が作用した場合に、燃料電池及び燃料電池用の補機部品を保護することを第1の目的とし、保護を図りつつ補機部品のメンテナンス性を向上させることを第2の目的とする。   The first object of the present invention is to protect the fuel cell and the auxiliary parts for the fuel cell when an impact force acts on the front part of the vehicle, and to improve the maintainability of the auxiliary parts while protecting the fuel cell. This is the second purpose.
この発明は、車両前部のモータルームに車両前後方向に延びる左右一対のサイドフレームを配設し、前記サイドフレームの間に燃料電池と前輪を駆動するモータとを車両前後方向に並べた状態で配役し、前記サイドフレームの間を連絡する前部クロスメンバを前記燃料電池の下部前方に配設し、前記サイドフレームの間を連絡する後部クロスメンバを前記モータの下部後方に配設し、前記燃料電池用の補機部品を燃料電池に取り付けた燃料電池車両の下部構造において、前記燃料電池用の補機部品を燃料電池の車両左右方向両端部で前記サイドフレームより低い位置に配設し、前記前部クロスメンバと後部クロスメンバとの間を連絡する左右一対のサイドメンバを前記補機部品の下方に配設し、前記サイドメンバを車両下方に湾曲する形状に形成したことを特徴とする。   In the present invention, a pair of left and right side frames extending in the vehicle front-rear direction are disposed in a motor room at the front of the vehicle, and a fuel cell and a motor for driving the front wheels are arranged in the vehicle front-rear direction between the side frames. Casting, a front cross member that communicates between the side frames is disposed in front of the lower part of the fuel cell, and a rear cross member that communicates between the side frames is disposed in the lower rear of the motor, In the lower structure of the fuel cell vehicle in which the auxiliary parts for the fuel cell are attached to the fuel cell, the auxiliary parts for the fuel cell are disposed at positions lower than the side frames at the left and right ends of the fuel cell in the vehicle, A pair of left and right side members that communicate between the front cross member and the rear cross member are disposed below the accessory parts, and the side members are curved downward. It is characterized in that form.
この発明の燃料電池車両の下部構造は、燃料電池用の補機部品を燃料電池の車両左右方向両端部でサイドフレームより低い位置に配設することによって、燃料電池車両の前部に衝撃力が作用した場合に、補機部品を燃料電池及びサイドメンバと衝突しない位置に配設することができ、燃料電池及び補機部品の双方を保護することができる。
また、この発明の燃料電池車両の下部構造は、前部クロスメンバと後部クロスメンバとの間を連絡するサイドメンバを補機部品の下方に配役し、サイドメンバを車両下方に湾曲する形状に形成したことによって、燃料電池車両の前部に衝撃力が作用した場合に、サイドメンバを車両下方に変形させて衝撃力を吸収することができるとともに、燃料電池の前方に配設された前部クロスメンバが車両後方へ大幅に移動することを抑制することができる。
これによって、この発明の燃料電池車両の下部構造は、前部クロスメンバが燃料電池及び補機部品に衝突することを回避して、燃料電池及び補機部品を保護することができる。また、この発明の燃料電池車両の下部構造は、サイドメンバを車両下方へ変形させることで、サイドメンバと燃料電池及び補機部品との衝突を回避し、燃料電池及び補機部品を保護することができる。
In the lower structure of the fuel cell vehicle according to the present invention, the impact force is applied to the front portion of the fuel cell vehicle by disposing the auxiliary parts for the fuel cell at positions lower than the side frames at both left and right ends of the fuel cell. When operated, the accessory parts can be disposed at a position where they do not collide with the fuel cell and the side member, and both the fuel cell and the accessory parts can be protected.
Further, the lower structure of the fuel cell vehicle according to the present invention is formed such that the side member that communicates between the front cross member and the rear cross member is cast below the accessory parts, and the side member is curved downward. As a result, when an impact force acts on the front portion of the fuel cell vehicle, the side member can be deformed downward to absorb the impact force, and a front cross disposed in front of the fuel cell. It is possible to suppress the member from moving greatly to the rear of the vehicle.
Accordingly, the lower structure of the fuel cell vehicle according to the present invention can protect the fuel cell and the auxiliary parts by avoiding the front cross member from colliding with the fuel cell and the auxiliary parts. In addition, the lower structure of the fuel cell vehicle according to the present invention prevents the collision between the side member, the fuel cell, and the auxiliary parts by protecting the fuel cell and the auxiliary parts by deforming the side member downward. Can do.
以下図面に基づいて、この発明の実施例を説明する。   Embodiments of the present invention will be described below with reference to the drawings.
図1〜図6は、この発明の実施例を示し、図1はモータルームの平面図、図2はモータルームの左側断面図、図3はモータルームの右側断面図、図4はモータルームの構造を下方から見た底面図、図5はモータルームの構造を左下斜め前方から見た斜視図、図6はモータルームの構造を右下斜め前方から見た斜視図である。
図1〜図3において、1は燃料電池車両、2はフロントバンパ、3・4は左右一対の右・左フロントフェンダ、5はダッシュパネル、6はフードパネル、7はモータルーム、8は車室である。燃料電池車両1は、ダッシュパネル5の前側にモータルーム7を設け、ダッシュパネル5の後側に車室8を設けている。燃料電池車両1は、車両前部のフロントバンパ2と右・左フロントフェンダ3・4とダッシュパネル5とで囲まれてフードパネル6で覆われるモータルーム7に、車両左右方向両側において車両前後方向に延びる左右一対の右・左サイドフレーム9・10を配設している。
右・左サイドフレーム9・10は、モータルーム7内において車両上下方向の中間高さ位置で車両前後方向に略水平に延びるように配設し、車室8に近接する部分を折曲してダッシュパネル5に沿い斜め後下方に立ち下がるように延設し、斜め後下方に延設した部分の下端から車室8の下面に沿って車両後方に略水平に延びるように延設している。右・左サイドフレーム9・10は、モータルーム7内の前端に右・左ステー11・12の各上端を連絡し、右・左ステー11・12の各下端に車両左右方向に延びる棒状の前部クロスメンバ13の両端部を連絡している。
また、右・左サイドフレーム9・10は、モータルーム7内の後端である斜め後下方に延設した部分の各下端に、車両左右方向に延びる平板状の後部クロスメンバ14の両端部の後側を連絡している。後部クロスメンバ14は、平板状の前側をモータルーム7内において前方に延設し、両端部の前側近傍に立設した右・左後部取付部15・16を右・左サイドフレーム9・10に夫々連絡している。前部クロスメンバ13と後部クロスメンバ14とは、車両左右方向の各両端部を車両前後方向に延びる右・左サイドメンバ17・18の前端部及び後端部に夫々連絡している。
前記燃料電池車両1は、フロントバンパ2の裏側に、車両左右方向に延びる上下2つの上部バンパメンバ19と下部バンパメンバ20とを配設している。上部バンパメンバ19と下部バンパメンバ20とは、車両幅方向両端部において左右のステー11・12に連絡している。
1 to 6 show an embodiment of the present invention, FIG. 1 is a plan view of a motor room, FIG. 2 is a left sectional view of the motor room, FIG. 3 is a right sectional view of the motor room, and FIG. 5 is a bottom view of the structure viewed from below, FIG. 5 is a perspective view of the structure of the motor room viewed from the lower left diagonal front, and FIG. 6 is a perspective view of the structure of the motor room viewed from the lower right diagonal front.
1-3, 1 is a fuel cell vehicle, 2 is a front bumper, 3 and 4 are a pair of right and left front fenders, 5 is a dash panel, 6 is a hood panel, 7 is a motor room, and 8 is a vehicle compartment. It is. The fuel cell vehicle 1 includes a motor room 7 on the front side of the dash panel 5 and a vehicle compartment 8 on the rear side of the dash panel 5. The fuel cell vehicle 1 includes a motor room 7 surrounded by a front bumper 2 at the front of the vehicle, right and left front fenders 3 and 4 and a dash panel 5 and covered with a hood panel 6. A pair of right and left side frames 9 and 10 extending left and right are disposed.
The right and left side frames 9 and 10 are arranged in the motor room 7 so as to extend substantially horizontally in the vehicle front-rear direction at an intermediate height position in the vehicle up-down direction, and bend a portion adjacent to the vehicle compartment 8. It extends so as to fall diagonally rearward and downward along the dash panel 5, and extends substantially horizontally from the lower end of the portion extending diagonally rearward and downward to the rear of the vehicle along the lower surface of the passenger compartment 8. . The right and left side frames 9 and 10 connect the upper ends of the right and left stays 11 and 12 to the front end in the motor room 7 and extend to the lower ends of the right and left stays 11 and 12 in a rod-like front extending in the vehicle left-right direction. Both ends of the cross member 13 are connected.
Further, the right and left side frames 9 and 10 are provided at the lower ends of portions extending obliquely rearward and lower, which are rear ends in the motor room 7, at both ends of a flat plate-like rear cross member 14 extending in the vehicle left-right direction. I contact the back side. The rear cross member 14 has a flat front side extending forward in the motor room 7, and right and left rear mounting portions 15 and 16 erected in the vicinity of the front side of both ends are attached to the right and left side frames 9 and 10. Each of them is in contact. The front cross member 13 and the rear cross member 14 communicate with the front and rear end portions of the right and left side members 17 and 18 extending in the vehicle front-rear direction at both ends in the vehicle left-right direction.
In the fuel cell vehicle 1, two upper and lower upper bumper members 19 and a lower bumper member 20 extending in the left-right direction of the vehicle are disposed on the back side of the front bumper 2. The upper bumper member 19 and the lower bumper member 20 communicate with the left and right stays 11 and 12 at both ends in the vehicle width direction.
前記右・左サイドフレーム9・10の間には、燃料電池システム21の燃料電池22とモータ23とを車両前後方向に並べた状態で配役している。燃料電池22は、車両左右方向の両端部が右・左サイドフレーム9・10の近傍まで延びる形状に形成され、前部クロスメンバ13の上部後方に配設している。モータ23は、後部クロスメンバ14の上部前方に配設している。
燃料電池22とモータ23とは、一体的に連結されて駆動ユニット24を構成している。駆動ユニット24は、燃料電池22の車両後側且つ車両右側にモータ23を配設し、燃料電池22の車両後側且つ左側であってモータ23の車両左側に減速機25を配設している。減速機25は、右・左駆動車軸26・27により右・左前輪28・29に連結している。モータ23は、燃料電池22の発生する電力で駆動され、発生する駆動力により減速機25と右・左駆動車軸26・27とを介して右・左前輪28・29を駆動する。
前記駆動ユニット24は、燃料電池22の車両左右方向の両端部を、右・左マウントブラケット30・31及び右・左マウント32・33を介して右・左サイドフレーム9・10に支持するとともに、モータ23の車両前後方向の後端部を、リヤマウントブラケット34及びリヤマウント35を介して後部クロスメンバ14に支持している。駆動ユニット24は、燃料電池22の車両後側であってモータ23及び減速機25の上部に、モータインバータ36を配設している。また、駆動ユニット24は、燃料電池22の車両前側でフロントバンパ2との間に、ラジエータ37を配設している。ラジエータ37は、インレットホース38とアウトレットホース39とにより燃料電池22に連絡され、燃料電池22を通過して昇温した冷却水を冷却する。
さらに、駆動ユニット24は、燃料電池22の車両左右方向の両端部に、それぞれ補機部品のウォータポンプ40と燃料インジェクタ41とを配設している。ウォータポンプ40は、アウトレットホース39と燃料電池22との間に介設され、燃料電池22とラジエータ37との間で冷却水を循環させる。ウォータポンプ40と燃料インジェクタ41との下端部は、燃料電池22の下端部より下方に突出しており、車両前方から見た場合に車両上下方向で前部クロスメンバ13と重なる位置にある。
このように、この燃料電池車両1の下部構造は、車両前部のモータルーム7に車両前後方向に延びる左右一対の右・左サイドフレーム9・10を配設し、右・左サイドフレーム9・10の間に燃料電池22と右・左前輪28・29を駆動するモータ23とを車両前後方向に並べた状態で配役し、右・左サイドフレーム9・10の間を連絡する前部クロスメンバ13を燃料電池22の下部前方に配設し、右・左サイドフレーム9・10の間を連絡する後部クロスメンバ14をモータ23の下部後方に配設し、燃料電池用の補機部品であるをウォータポンプ40と燃料インジェクタ41とを燃料電池22に取り付けている。
Between the right and left side frames 9, 10, the fuel cell 22 and the motor 23 of the fuel cell system 21 are cast in a state in which they are arranged in the vehicle front-rear direction. The fuel cell 22 is formed in a shape in which both ends in the left-right direction of the vehicle extend to the vicinity of the right and left side frames 9, 10, and is disposed at the upper rear of the front cross member 13. The motor 23 is disposed in front of the upper portion of the rear cross member 14.
The fuel cell 22 and the motor 23 are integrally connected to form a drive unit 24. The drive unit 24 has a motor 23 disposed on the vehicle rear side and the vehicle right side of the fuel cell 22, and a speed reducer 25 is disposed on the vehicle rear side and the left side of the fuel cell 22 and on the vehicle left side of the motor 23. . The speed reducer 25 is connected to the right and left front wheels 28 and 29 by right and left drive axles 26 and 27. The motor 23 is driven by the electric power generated by the fuel cell 22 and drives the right and left front wheels 28 and 29 via the speed reducer 25 and the right and left drive axles 26 and 27 by the generated driving force.
The drive unit 24 supports both ends of the fuel cell 22 in the left-right direction of the vehicle on the right and left side frames 9 and 10 via the right and left mount brackets 30 and 31 and the right and left mounts 32 and 33, respectively. A rear end portion of the motor 23 in the vehicle front-rear direction is supported on the rear cross member 14 via a rear mount bracket 34 and a rear mount 35. The drive unit 24 includes a motor inverter 36 on the rear side of the fuel cell 22 and above the motor 23 and the speed reducer 25. Further, the drive unit 24 includes a radiator 37 between the front side of the fuel cell 22 and the front bumper 2. The radiator 37 is connected to the fuel cell 22 by an inlet hose 38 and an outlet hose 39, and cools the cooling water whose temperature has passed through the fuel cell 22.
Further, the drive unit 24 has auxiliary parts water pumps 40 and fuel injectors 41 disposed at both ends of the fuel cell 22 in the lateral direction of the vehicle. The water pump 40 is interposed between the outlet hose 39 and the fuel cell 22, and circulates cooling water between the fuel cell 22 and the radiator 37. The lower end portions of the water pump 40 and the fuel injector 41 protrude downward from the lower end portion of the fuel cell 22 and are in a position overlapping the front cross member 13 in the vehicle vertical direction when viewed from the front of the vehicle.
As described above, the lower structure of the fuel cell vehicle 1 includes a pair of right and left side frames 9 and 10 extending in the vehicle front-rear direction in the motor room 7 at the front of the vehicle. A front cross member that communicates between the right and left side frames 9 and 10 with the fuel cell 22 and the motor 23 that drives the right and left front wheels 28 and 29 arranged in the vehicle longitudinal direction between the right and left side frames 9 and 10 13 is disposed in front of the lower part of the fuel cell 22, and a rear cross member 14 communicating between the right and left side frames 9, 10 is disposed in the lower rear of the motor 23, which is an auxiliary part for the fuel cell. The water pump 40 and the fuel injector 41 are attached to the fuel cell 22.
この燃料電池車両1の下部構造は、図1〜図3に示すように、前部クロスメンバ13の車両左右方向両端部と後部クロスメンバ14の車両左右方向両端部との間をそれぞれ左右一対の右・左サイドメンバ17・18により連絡し、燃料電池用の補機部品であるウォータポンプ40と燃料インジェクタ41とを燃料電池22の車両左右方向両端部で右・左サイドフレーム9・10より低い位置に配設し、前部クロスメンバ13と後部クロスメンバ14との間を連絡する右・左サイドメンバ17・18を補機部品であるウォータポンプ40と燃料インジェクタ41との下方に配設し、右・左サイドメンバ17・18を車両下方に湾曲する形状に形成している。
このように、この燃料電池車両1の下部構造は、燃料電池用の補機部品であるウォータポンプ40と燃料インジェクタ41とを燃料電池22の車両左右方向両端部で右・左サイドフレーム9・10より低い位置に配設することによって、燃料電池車両1の前部に衝撃力Fが作用した場合に、補機部品であるウォータポンプ40と燃料インジェクタ41とを燃料電池22及び右・左サイドメンバ17・18と衝突しない位置に配設することができ、燃料電池22及び補機部品であるウォータポンプ40と燃料インジェクタ41との双方を保護することができる。
また、この燃料電池車両1の下部構造は、前部クロスメンバ13と後部クロスメンバ14との間を連絡する右・左サイドメンバ17・18を補機部品であるウォータポンプ40と燃料インジェクタ41との下方に配役し、右・左サイドメンバ17・18を車両下方に湾曲する形状に形成したことによって、燃料電池車両1の前部に衝撃力Fが作用した場合に、右・左サイドメンバ17・18を図2・図3に破線で示すように車両下方に変形させて衝撃力Fを吸収することができるとともに、燃料電池22の前方に配設された前部クロスメンバ13が車両後方へ大幅に移動することを抑制することができる。
これによって、この燃料電池車両1の下部構造は、前部クロスメンバ13が燃料電池22及び補機部品であるウォータポンプ40と燃料インジェクタ41とに衝突することを回避して、燃料電池22及び補機部品を保護することができる。また、この燃料電池車両1の下部構造は、右・左サイドメンバ17・18を車両下方へ変形させることで、右・左サイドメンバ17・18と燃料電池22及び補機部品との衝突を回避し、燃料電池22及び補機部品を保護することができる。
As shown in FIGS. 1 to 3, the lower structure of the fuel cell vehicle 1 has a pair of left and right sides between the vehicle left and right ends of the front cross member 13 and the vehicle left and right ends of the rear cross member 14. The right and left side members 17 and 18 communicate with each other, and the water pump 40 and the fuel injector 41, which are auxiliary parts for the fuel cell, are lower than the right and left side frames 9 and 10 at both ends of the fuel cell 22 in the left-right direction of the vehicle. The right and left side members 17 and 18 which are disposed at positions and communicate between the front cross member 13 and the rear cross member 14 are disposed below the water pump 40 and the fuel injector 41 which are auxiliary parts. The right and left side members 17 and 18 are formed in a shape that curves downward in the vehicle.
As described above, the lower structure of the fuel cell vehicle 1 includes the water pump 40 and the fuel injector 41, which are auxiliary parts for the fuel cell, at the right and left side frames 9 and 10 at both ends of the fuel cell 22 in the left-right direction of the vehicle. By disposing at a lower position, when an impact force F acts on the front part of the fuel cell vehicle 1, the water pump 40 and the fuel injector 41, which are auxiliary parts, are connected to the fuel cell 22 and the right and left side members. The fuel cell 22 and the auxiliary pump water pump 40 and the fuel injector 41 can be protected.
Further, the lower structure of the fuel cell vehicle 1 includes a right and left side members 17 and 18 that communicate between the front cross member 13 and the rear cross member 14 with a water pump 40 and a fuel injector 41 that are auxiliary parts. When the impact force F acts on the front portion of the fuel cell vehicle 1 by forming the right and left side members 17 and 18 into a shape that curves downward in the vehicle, the right and left side members 17 2 and 3 can be deformed downward as shown by broken lines in FIG. 2 and FIG. 3 to absorb the impact force F, and the front cross member 13 disposed in front of the fuel cell 22 moves rearward of the vehicle. It is possible to suppress a significant movement.
As a result, the lower structure of the fuel cell vehicle 1 prevents the front cross member 13 from colliding with the fuel cell 22 and the water pump 40 and the fuel injector 41, which are auxiliary parts, and prevents the fuel cell 22 and the auxiliary structure from colliding with each other. Machine parts can be protected. Further, the lower structure of the fuel cell vehicle 1 prevents the right and left side members 17 and 18 from colliding with the fuel cell 22 and auxiliary parts by deforming the right and left side members 17 and 18 downward. In addition, the fuel cell 22 and the accessory parts can be protected.
この燃料電池車両1の下部構造は、図5・図6に示すように、前部クロスメンバ13と後部クロスメンバ14との車両左右方向の各右端部に夫々右前部取付ボス42と右後部取付ボス43とを設け、前部クロスメンバ13と後部クロスメンバ14との車両左右方向の各左端部に夫々左前部取付ボス44と左後部取付ボス45とを設けている。また、燃料電池車両1の下部構造は、右サイドメンバ17の前後端に夫々右前部取付ブラケット46と右後部取付ブラケット47とを設け、左サイドメンバ18の前後端に夫々左前部取付ブラケット48と左後部取付ブラケット49とを設けている。
この燃料電池車両1の下部構造は、図4に示すように、前部クロスメンバ13の右前部取付ボス42と後部クロスメンバ14の右後部取付ボス43とに、右サイドメンバ17の右前部取付ブラケット46と右後部取付ブラケット47とを夫々右前部取付ボルト50と右後部取付ボルト51とにより着脱自在に取り付けることができ、また、前部クロスメンバ13の左前部取付ボス44と後部クロスメンバ14の左後部取付ボス45とに、左サイドメンバ18の左前部取付ブラケット48と左後部取付ブラケット49とを左前部取付ボルト52と左後部取付ボルト53とにより着脱自在に取り付けることができる。
このように、この燃料電池車両1の下部構造は、右・左サイドメンバ17・18を、前部クロスメンバ13及び後部クロスメンバ14に対して着脱自在に取り付けたため、右・左サイドメンバ17・18を取り外すことで補機部品であるウォータポンプ40と燃料インジェクタ41との点検及びメンテナンス作業を行なうことができる。
これにより、この燃料電池車両1の下部構造は、右・左サイドメンバ17・18によって補機部品を保護しつつ補機部品のメンテナンス性を向上させることができる。
As shown in FIGS. 5 and 6, the lower structure of the fuel cell vehicle 1 includes a right front mounting boss 42 and a right rear mounting at the right ends of the front cross member 13 and the rear cross member 14 in the lateral direction of the vehicle. A boss 43 is provided, and a left front mounting boss 44 and a left rear mounting boss 45 are provided at left ends of the front cross member 13 and the rear cross member 14 in the left-right direction of the vehicle. Further, the lower structure of the fuel cell vehicle 1 is provided with a right front mounting bracket 46 and a right rear mounting bracket 47 at the front and rear ends of the right side member 17, respectively, and a left front mounting bracket 48 at the front and rear ends of the left side member 18, respectively. A left rear mounting bracket 49 is provided.
As shown in FIG. 4, the fuel cell vehicle 1 has a lower structure in which the right front member 17 is attached to the right front mounting boss 42 of the front cross member 13 and the right rear mounting boss 43 of the rear cross member 14. The bracket 46 and the right rear mounting bracket 47 can be detachably mounted by the right front mounting bolt 50 and the right rear mounting bolt 51, respectively. Also, the left front mounting boss 44 and the rear cross member 14 of the front cross member 13 can be attached. The left front mounting bracket 48 and the left rear mounting bracket 49 of the left side member 18 can be detachably mounted to the left rear mounting boss 45 with the left front mounting bolt 52 and the left rear mounting bolt 53.
Thus, the fuel cell vehicle 1 has a lower structure in which the right and left side members 17 and 18 are detachably attached to the front cross member 13 and the rear cross member 14. The inspection and maintenance work of the water pump 40 and the fuel injector 41 which are auxiliary machine parts can be performed by removing 18.
As a result, the lower structure of the fuel cell vehicle 1 can improve the maintainability of the auxiliary parts while protecting the auxiliary parts by the right and left side members 17 and 18.
この燃料電池車両1の下部構造は、図5・図6に示すように、右・左サイドメンバ17・18を、曲げ加工を施したパイプによって形成している。
この燃料電池車両1の下部構造は、右・左サイドメンバ17・18を曲げ加工を施したパイプによって形成したため、右・左サイドメンバ17・18を車両上下方向及び車幅方向へ3次元的に曲げ変形させることができ、燃料電池車両1の前部に衝撃力Fが作用した場合の、前部クロスメンバ13の車両後方への移動量と車両下方への変形量の調整を容易にし、燃料電池22及び補機部品であるウォータポンプ40と燃料インジェクタ41との保護性を高めることができる。
In the lower structure of the fuel cell vehicle 1, as shown in FIGS. 5 and 6, the right and left side members 17 and 18 are formed by pipes that are bent.
Since the lower structure of the fuel cell vehicle 1 is formed by pipes in which the right and left side members 17 and 18 are bent, the right and left side members 17 and 18 are three-dimensionally arranged in the vehicle vertical direction and the vehicle width direction. It is possible to bend and deform, and when the impact force F acts on the front part of the fuel cell vehicle 1, it is easy to adjust the amount of movement of the front cross member 13 to the rear of the vehicle and the amount of deformation to the lower side of the vehicle. The protection of the water pump 40 and the fuel injector 41, which are the battery 22 and auxiliary parts, can be improved.
この燃料電池車両1の下部構造は、図5・図6に示すように、右・左サイドメンバ17・18を、複数本のパイプを車両左右方向に並べて形成している。
これにより、この燃料電池車両1の下部構造は、右・左サイドメンバ17・18のパイプの本数を変更することによって、燃料電池車両1の前部に衝撃力Fが作用した場合の、前部クロスメンバ13の車両後方への移動量と車両下方への変形量の調整をさらに容易にし、燃料電池22及び補機部品であるウォータポンプ40と燃料インジェクタ41との保護性を高めることができる。
In the lower structure of the fuel cell vehicle 1, as shown in FIGS. 5 and 6, right and left side members 17 and 18 are formed by arranging a plurality of pipes in the vehicle left-right direction.
As a result, the lower structure of the fuel cell vehicle 1 has a front portion when the impact force F acts on the front portion of the fuel cell vehicle 1 by changing the number of pipes of the right and left side members 17 and 18. Adjustment of the amount of movement of the cross member 13 to the rear of the vehicle and the amount of deformation to the lower side of the vehicle can be further facilitated, and the protection of the fuel cell 22 and the water pump 40, which is an auxiliary component, and the fuel injector 41 can be enhanced.
この発明は、車両前部に作用する衝撃力から燃料電池及び燃料電他用の補機部品を保護し、保護を図りつつ補機部品のメンテナンス性を向上させるものであり、燃料電池以外のガソリンエンジン等の駆動ユニットを搭載した車両に適用することができる。   The present invention protects fuel cell and fuel cell and other auxiliary parts from impact force acting on the front of the vehicle, and improves the maintainability of the auxiliary parts while protecting the gasoline. It can be applied to a vehicle equipped with a drive unit such as an engine.
燃料電池車両の下部構造の実施例を示すモータルームの平面図である。It is a top view of the motor room which shows the Example of the lower structure of a fuel cell vehicle. 燃料電池車両の下部構造の実施例を示すモータルームの左側断面図である。It is a left sectional view of a motor room showing an example of a lower structure of a fuel cell vehicle. 燃料電池車両の下部構造の実施例を示すモータルームの右側断面図である。It is a right sectional view of a motor room showing an example of a lower structure of a fuel cell vehicle. 燃料電池車両の下部構造の実施例を示すモータルームの構造を下方から見た底面図である。It is the bottom view which looked at the structure of the motor room which shows the Example of the lower structure of a fuel cell vehicle from the downward direction. 燃料電池車両の下部構造の実施例を示すモータルームの構造を左下斜め前方から見た斜視図である。It is the perspective view which looked at the structure of the motor room which shows the Example of the lower structure of a fuel cell vehicle from the lower left diagonal front. 燃料電池車両の下部構造の実施例を示すモータルームの構造を右下前方から見た斜視図である。It is the perspective view which looked at the structure of the motor room which shows the Example of the lower structure of a fuel cell vehicle from the lower right front.
符号の説明Explanation of symbols
1 燃料電池車両
7 モータルーム
9・10 右・左サイドフレーム
11・12 右・左ステー
13 前部クロスメンバ
14 後部クロスメンバ
17・18 右・左サイドメンバ
22 燃料電池
23 モータ
24 駆動ユニット
25 減速機
28・29 右・左前輪
36 モータインバータ
37 ラジエータ
40 ウォータポンプ
41 燃料インジェクタ
DESCRIPTION OF SYMBOLS 1 Fuel cell vehicle 7 Motor room 9/10 Right / left side frame 11/12 Right / left stay 13 Front cross member 14 Rear cross member 17/18 Right / left side member 22 Fuel cell 23 Motor 24 Drive unit 25 Reduction gear 28/29 Right / Left Front Wheel 36 Motor Inverter 37 Radiator 40 Water Pump 41 Fuel Injector

Claims (4)

  1. 車両前部のモータルームに車両前後方向に延びる左右一対のサイドフレームを配設し、前記サイドフレームの間に燃料電池と前輪を駆動するモータとを車両前後方向に並べた状態で配役し、前記サイドフレームの間を連絡する前部クロスメンバを前記燃料電池の下部前方に配設し、前記サイドフレームの間を連絡する後部クロスメンバを前記モータの下部後方に配設し、前記燃料電池用の補機部品を燃料電池に取り付けた燃料電池車両の下部構造において、前記燃料電池用の補機部品を燃料電池の車両左右方向両端部で前記サイドフレームより低い位置に配設し、前記前部クロスメンバと後部クロスメンバとの間を連絡する左右一対のサイドメンバを前記補機部品の下方に配設し、前記サイドメンバを車両下方に湾曲する形状に形成したことを特徴とする燃料電池車両の下部構造。   A pair of left and right side frames extending in the vehicle front-rear direction are disposed in the motor room in the front of the vehicle, and a fuel cell and a motor for driving the front wheels are arranged between the side frames in the vehicle front-rear direction, A front cross member that communicates between the side frames is disposed in front of the lower part of the fuel cell, and a rear cross member that communicates between the side frames is disposed in the lower rear of the motor. In the lower structure of the fuel cell vehicle in which the auxiliary parts are attached to the fuel cell, the auxiliary parts for the fuel cell are disposed at positions lower than the side frame at both ends of the fuel cell in the vehicle left-right direction, and the front cross A pair of left and right side members that communicate between the member and the rear cross member are disposed below the accessory parts, and the side members are formed in a shape that curves downward in the vehicle. Lower structure of a fuel cell vehicle according to claim.
  2. 前記サイドメンバを、前部クロスメンバ及び後部クロスメンバに着脱自在に取り付けることを特徴とする請求項1に記載の燃料電池車両の下部構造。   2. The lower structure of a fuel cell vehicle according to claim 1, wherein the side member is detachably attached to a front cross member and a rear cross member.
  3. 前記サイドメンバを、曲げ加工を施したパイプによって形成することを特徴とする請求項2に記載の燃料電池車両の下部構造。   The lower structure of the fuel cell vehicle according to claim 2, wherein the side member is formed by a pipe that is bent.
  4. 前記サイドメンバを、前記パイプを複数本車両左右方向に並べて形成することを特徴とする請求項3に記載の燃料電池車両の下部構造。   4. The lower structure of a fuel cell vehicle according to claim 3, wherein the side member is formed by arranging a plurality of the pipes in the left-right direction of the vehicle.
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JP2011218822A (en) * 2010-04-02 2011-11-04 Mitsubishi Motors Corp Vehicle body reinforcing structure
JP2012153255A (en) * 2011-01-26 2012-08-16 Honda Motor Co Ltd Front body of vehicle
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