JP2017114356A - Intake shroud structure - Google Patents

Intake shroud structure Download PDF

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JP2017114356A
JP2017114356A JP2015252899A JP2015252899A JP2017114356A JP 2017114356 A JP2017114356 A JP 2017114356A JP 2015252899 A JP2015252899 A JP 2015252899A JP 2015252899 A JP2015252899 A JP 2015252899A JP 2017114356 A JP2017114356 A JP 2017114356A
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intake
shroud
air flow
flow path
vehicle
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JP6579322B2 (en
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和夫 河村
Kazuo Kawamura
和夫 河村
幸一 白川
Koichi Shirakawa
幸一 白川
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Suzuki Motor Corp
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Suzuki Motor Corp
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Priority to DE102016015387.3A priority patent/DE102016015387B4/en
Priority to CN201611209083.0A priority patent/CN106994897B/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K13/00—Arrangement in connection with combustion air intake or gas exhaust of propulsion units
    • B60K13/02—Arrangement in connection with combustion air intake or gas exhaust of propulsion units concerning intake
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K11/00—Arrangement in connection with cooling of propulsion units
    • B60K11/08—Air inlets for cooling; Shutters or blinds therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
    • B60R19/52—Radiator or grille guards ; Radiator grilles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/34—Protecting non-occupants of a vehicle, e.g. pedestrians
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
    • B60R19/52—Radiator or grille guards ; Radiator grilles
    • B60R2019/525—Radiator grilles
    • B60R2019/527—Radiator grilles integral with bumpers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R2021/003—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks characterised by occupant or pedestian
    • B60R2021/0039—Body parts of the occupant or pedestrian affected by the accident
    • B60R2021/0051—Knees
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/34—Protecting non-occupants of a vehicle, e.g. pedestrians
    • B60R2021/343—Protecting non-occupants of a vehicle, e.g. pedestrians using deformable body panel, bodywork or components

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Body Structure For Vehicles (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide an intake shroud which is capable of efficiently sucking air while avoiding suction of foreign matter or the like by an engine, reducing influence on pedestrians during a collision, and improving pedestrian protection performance.SOLUTION: An intake shroud 6 guides intake air to an engine and facilitates the intake of the intake air into the engine. Each of an upper side mounting section 23 provided in an upper section and a lower side mounting section 24 provided in a lower section is mounted and fixed to a vehicle body side. The intake shroud includes: a lower side air flow passage 9 with an intake port 8 opened toward a vehicle front side Fr; an upper side air flow passage 11 with an air delivery port 10 opened toward a vehicle rear side Rr; and a communication port 12 which communicates the upper side air flow passage 11 with the lower side air flow passage 9 in a vertical direction. An exhaust port 14 opened into an engine room 13 is provided at an end of the vehicle rear side Rr in the lower side air flow passage 9.SELECTED DRAWING: Figure 6

Description

本発明は、エンジンに吸気を案内して吸気を取り込みやすくする吸気シュラウドの構造に関する。   The present invention relates to a structure of an intake shroud that guides intake air to an engine to facilitate intake air intake.

特許文献１に開示されているように、従来、上記の吸気シュラウド（特許文献１では、吸気ダクト６２）は、車両前方側に向かって開口する吸気口を備えた角筒状に形成されていた。   As disclosed in Patent Document 1, conventionally, the intake shroud (the intake duct 62 in Patent Document 1) has been formed in a rectangular tube shape having an intake opening that opens toward the front side of the vehicle. .

特開２００８−１３７５９１号公報JP 2008-137591 A

上記従来の構造によれば、車両が歩行者と衝突した時に吸気シュラウドが変形しにくく、歩行者保護の面で改善の余地があった。
また、吸気口から入り込んだごみや水などが吸気シュラウドの空気送出口に容易に到達して、ごみや水、雪などがエンジンに入り込む虞があった。
本発明は上記実状に鑑みて成されたもので、その目的は、エンジンが異物などを吸入することを回避しつつ効率よく吸気でき、かつ、衝突時に歩行者への影響を低減することができて歩行者保護性能を向上させることができる吸気シュラウド構造を提供する点にある。 According to the above conventional structure, the intake shroud is not easily deformed when the vehicle collides with a pedestrian, and there is room for improvement in terms of pedestrian protection.
In addition, there is a risk that dust, water, etc. entering from the intake port will easily reach the air outlet of the intake shroud and dust, water, snow, etc. will enter the engine.
The present invention has been made in view of the above circumstances, and its purpose is to be able to efficiently inhale while avoiding inhalation of foreign matter by the engine and to reduce the influence on pedestrians at the time of collision. It is in the point which provides the intake shroud structure which can improve pedestrian protection performance.

本発明の特徴は、
エンジンに吸気を案内して前記吸気を前記エンジンに取り込みやすくする吸気シュラウドの構造であって、
前記吸気シュラウドの上部に設けられた上側取り付け部と、下部に設けられた下側取り付け部とがそれぞれ車体側に取り付け固定されており、
前記吸気シュラウドは、車両前方側に向かって開口する吸気口を備えた下側空気流路と、
車両後方側に向かって開口する空気送出口を備えた上側空気流路と、
前記上側空気流路と下側空気流路を上下方向に連通させる連通口とを有し、
前記下側空気流路の車両後方側の端部に、エンジンルーム内に開口する排気口を有している点にある。（請求項１） The features of the present invention are:
A structure of an intake shroud that guides intake air to the engine and facilitates intake of the intake air into the engine,
An upper mounting portion provided at the upper portion of the intake shroud and a lower mounting portion provided at the lower portion are fixedly attached to the vehicle body side, respectively.
The intake shroud includes a lower air flow path having an intake opening that opens toward the front side of the vehicle;
An upper air flow path having an air outlet opening toward the vehicle rear side;
A communication port for communicating the upper air flow path and the lower air flow path in the vertical direction;
The lower air flow path has an exhaust opening that opens into the engine room at the end of the lower air passage on the vehicle rear side. (Claim 1)

上記の構成により、前記吸気口からに下側空気流路に入り込んだ空気は下側空気流路を車両後方側に流れる。そして、所定量の空気が前記連通口を通って上側空気流路に入り込み、残りの空気が前記排気口からエンジンルーム内に排出される。上側空気流路に入り込んだ空気は、上側空気流路を車両後方側に流れ、エンジンへの給気口である前記空気送出口からエンジン側に送出される。
また、上記の構成によれば、前記下側空気流路の車両後方側の端部に、エンジンルーム内に開口する排気口を有しているから、吸気シュラウドの下部の強度を下げて、衝突時に前記下部を変形しやすくすることができる。これにより、被衝突体が歩行者であった場合、歩行者への危害を軽減することができる。
そして、車両前方側の吸気口と車両後方側の空気送出口とを上下方向に（正面視で重ならないように）ずらすことで、ごみや水、雪などがエンジンに入りにくくすることができる。また、ごみや水などが吸気口から下側空気流路に入り込んでも、これらを前記排気口からエンジンルーム内に積極的に排出して、ごみや水などが空気送出口に届きにくくすることができる。（請求項１） With the above configuration, the air that has entered the lower air flow path from the intake port flows through the lower air flow path toward the vehicle rear side. Then, a predetermined amount of air enters the upper air flow path through the communication port, and the remaining air is discharged from the exhaust port into the engine room. The air that has entered the upper air flow path flows to the vehicle rear side through the upper air flow path, and is sent to the engine side from the air outlet that is an air supply port to the engine.
Further, according to the above configuration, since the lower air flow path has the exhaust opening that opens into the engine room at the vehicle rear side end portion, the strength of the lower portion of the intake shroud is reduced, and the collision occurs. Sometimes the lower part can be easily deformed. Thereby, when the collision object is a pedestrian, the harm to the pedestrian can be reduced.
By shifting the intake port on the vehicle front side and the air outlet on the vehicle rear side in the vertical direction (so as not to overlap in front view), it is possible to make it difficult for dust, water, snow, etc. to enter the engine. In addition, even if dust or water enters the lower air flow path from the intake port, it may be actively discharged from the exhaust port into the engine room, making it difficult for dust or water to reach the air delivery port. it can. (Claim 1)

本発明において、
前記上側空気流路の側部と前記下側空気流路の側部はシュラウド側壁により形成され、
前記吸気口の上端部と略同じ高さ位置に位置するとともに車両前後方向に沿う第１薄肉部が前記シュラウド側壁に形成されていると、次の作用を奏することができる。（請求項２） In the present invention,
The side of the upper air flow path and the side of the lower air flow path are formed by shroud side walls,
When the first thin wall portion that is located at substantially the same height as the upper end portion of the air intake port and that extends along the vehicle front-rear direction is formed on the shroud side wall, the following effects can be obtained. (Claim 2)

衝突時の衝撃力の入力により、シュラウド側壁に割れもしくは変形が生じやすくなる。そして、シュラウド側壁に割れもしくは変形が生じた場合、吸気シュラウドが車両後方側に移動するため、歩行者への危害を軽減することができる。（請求項２）   Due to the input of impact force at the time of collision, the shroud side wall is likely to be cracked or deformed. And when a shroud side wall cracks or deform | transforms, since an intake shroud moves to the vehicle rear side, the danger to a pedestrian can be reduced. (Claim 2)

本発明において、
前記吸気口の下端部と略同じ高さ位置に位置するとともに車両前後方向に沿う第２薄肉部が前記シュラウド側壁に形成されていると、次の作用を奏することができる。（請求項３） In the present invention,
When the second thin wall portion that is located at substantially the same height as the lower end portion of the intake port and is formed along the vehicle front-rear direction is formed on the shroud side wall, the following effects can be obtained. (Claim 3)

衝突時の衝撃力の入力により、シュラウド側壁に割れもしくは変形がより生じやすくなり、歩行者への危害を、より軽減することができる。（請求項３）   By inputting the impact force at the time of the collision, the shroud side wall is more likely to be cracked or deformed, and the harm to the pedestrian can be further reduced. (Claim 3)

本発明において、
前記上側取り付け部とシュラウド本体との間に第１脆弱部が設けられ、前記下側取り付け部と前記シュラウド本体との間に第２脆弱部が設けられていると、次の作用を奏することができる。（請求項４） In the present invention,
If the first fragile portion is provided between the upper attachment portion and the shroud body, and the second fragile portion is provided between the lower attachment portion and the shroud body, the following effects can be obtained. it can. (Claim 4)

衝突時の衝撃力の入力により、前記上側取り付け部や下側取り付け部が変形したりシュラウド本体から分離したりして、シュラウド本体が車両後方側に移動することで、歩行者への危害を軽減することができる。（請求項４）   By inputting impact force at the time of collision, the upper mounting part and lower mounting part are deformed or separated from the shroud body, and the shroud body moves to the rear side of the vehicle, reducing the danger to pedestrians. can do. (Claim 4)

本発明において、
前記上側取り付け部は、前記車体側のフードロックメンバに取り付け固定され、
前記下側取り付け部は、前記車体側のバンパメンバに取り付け固定されていると、次の作用を奏することができる。（請求項５） In the present invention,
The upper attachment portion is fixedly attached to the hood lock member on the vehicle body side,
When the lower attachment portion is attached and fixed to the bumper member on the vehicle body side, the following operation can be achieved. (Claim 5)

被衝突体が歩行者であった場合、歩行者の脚部を保護しやすくすることができる。（請求項５）   When the collision object is a pedestrian, the leg of the pedestrian can be easily protected. (Claim 5)

本発明によれば、
エンジンが異物などを吸入することを回避しつつ効率よく吸気でき、かつ、衝突時に歩行者への影響を低減することができて歩行者保護性能を向上させることができる吸気シュラウド構造を提供することができた。 According to the present invention,
To provide an air intake shroud structure that can efficiently inhale while avoiding inhalation of foreign matter and the like, and that can reduce the influence on a pedestrian at the time of a collision and improve pedestrian protection performance. I was able to.

吸気シュラウドを備えた車両の前部構造を車両前方側から見た図View of the front structure of a vehicle equipped with an intake shroud as seen from the front side of the vehicle 吸気シュラウドを備えた車両の前部構造を車両後方側から見た図View of the front structure of a vehicle equipped with an intake shroud as seen from the rear side of the vehicle 図２のＡ−Ａ断面図AA sectional view of FIG. 吸気シュラウドの側面図Side view of intake shroud 吸気シュラウドの斜視図Perspective view of intake shroud 吸気シュラウドの縦断側面図Vertical side view of intake shroud 吸気シュラウドの正面図Front view of intake shroud 図４のＧ−Ｇ断面図GG sectional view of FIG. 図４のＨ−Ｈ断面図HH sectional view of FIG. 車両衝突時の吸気シュラウドの作動を示すシミュレーション図Simulation diagram showing the operation of the intake shroud in the event of a vehicle collision

以下、本発明を実施するための形態を図面に基づいて説明する。
図１〜図３に、いずれも車幅方向に長いフロントバンパ１、グリル２、バンパメンバ３、バンパメンバ３の上側に位置するフードロックメンバ４を備えた車両の前部構造を示してある。これらの部品の上側にフロントフード５が位置している。 Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.
FIGS. 1 to 3 each show a front structure of a vehicle including a front bumper 1, a grill 2, a bumper member 3, and a hood lock member 4 positioned above the bumper member 3 in the vehicle width direction. The front hood 5 is located above these parts.

前記グリル２の車幅方向一端部（右端部）の裏側であって、バンパメンバ３とフードロックメンバ４の間に樹脂製の吸気シュラウド６が配設されている。吸気シュラウド６は、エンジン（図示せず）に吸気を案内して前記吸気をエンジンに取り込みやすくする部品である。   A resin-made intake shroud 6 is disposed between the bumper member 3 and the hood lock member 4 on the back side of one end (right end) in the vehicle width direction of the grill 2. The intake shroud 6 is a component that guides intake air to an engine (not shown) to facilitate intake of the intake air into the engine.

［吸気シュラウド６の構造］
図４，図５，図７に示すように、吸気シュラウド６は、シュラウド本体７と、シュラウド本体７の上端部に設けられた左右一対の上側取り付け部２３と、シュラウド本体７の下端部に設けられた左右一対の下側取り付け部２４とから成る。上側取り付け部２３と下側取り付け部２４は車体側に取り付けられる。 [Structure of intake shroud 6]
As shown in FIGS. 4, 5, and 7, the intake shroud 6 is provided at the shroud main body 7, a pair of left and right upper mounting portions 23 provided at the upper end of the shroud main body 7, and the lower end of the shroud main body 7. And a pair of left and right lower attachment portions 24. The upper attachment portion 23 and the lower attachment portion 24 are attached to the vehicle body side.

［シュラウド本体７の構造］
図６に示すように、シュラウド本体７は、車両前方側Ｆｒに向かって開口する吸気口８を備えた下側空気流路９と、車両後方側Ｒｒに向かって開口する空気送出口１０を備えた上側空気流路１１と、上側空気流路１１と下側空気流路９を上下方向に連通させる連通口１２とを有している。 [Structure of shroud body 7]
As shown in FIG. 6, the shroud body 7 includes a lower air flow path 9 having an intake port 8 that opens toward the vehicle front side Fr, and an air outlet 10 that opens toward the vehicle rear side Rr. The upper air flow path 11 and the communication port 12 that allows the upper air flow path 11 and the lower air flow path 9 to communicate with each other in the vertical direction.

さらに、下側空気流路９の後端部（車両後方側Ｒｒの端部）に、エンジンルーム１３内に開口する排気口１４を有している。前記吸気口８・空気送出口１０・連通口１２・排気口１４はいずれも長方形状である。   Further, an exhaust port 14 that opens into the engine room 13 is provided at the rear end portion (end portion of the vehicle rear side Rr) of the lower air flow path 9. The intake port 8, the air delivery port 10, the communication port 12, and the exhaust port 14 are all rectangular.

車両前後方向における前記上側空気流路１１の全長は、下側空気流路９の全長よりも長く設定されている。詳しくは、上側空気流路１１の前半部１１Ａ（上流側の流路部分）が、下側空気流路９全体の上側に位置するとともに、上側空気流路１１の後半部１１Ｂ（下流側の流路部分）が、下側空気流路９よりも車両後方側Ｒｒに突出している。   The total length of the upper air flow path 11 in the vehicle front-rear direction is set longer than the total length of the lower air flow path 9. Specifically, the front half portion 11A (upstream flow passage portion) of the upper air flow passage 11 is positioned above the entire lower air flow passage 9, and the rear half portion 11B (downstream flow of the upper air flow passage 11). Road portion) protrudes from the lower air flow path 9 to the vehicle rear side Rr.

シュラウド本体７の幅方向（車幅方向）における上側空気流路１１の幅と下側空気流路９の幅は略同一である。両流路９，１１の左右の側部は、上下に一体に連なったシュラウド側壁１５（以下、「側壁１５」と称する）により形成されている。左右の側壁１５の上下方向中間部間には、略水平の仕切り壁１６が架設され、この仕切り壁１６に前記連通口１２が形成されている。   The width of the upper air flow path 11 and the width of the lower air flow path 9 in the width direction (vehicle width direction) of the shroud body 7 are substantially the same. The left and right side portions of both flow passages 9 and 11 are formed by shroud side walls 15 (hereinafter referred to as “side walls 15”) that are integrally connected vertically. A substantially horizontal partition wall 16 is installed between the vertical middle portions of the left and right side walls 15, and the communication port 12 is formed in the partition wall 16.

［下側空気流路９の構造］
図４，図６に示すように、下側空気流路９の下端部は、シュラウド本体７の第１下壁１７により形成されている。第１下壁１７の前端部１７Ａは、車両後方側Ｒｒほど上方に位置するように少し後上がりに直線状に傾斜している。また、前端部１７Ａ以外の部分（中間部１７Ｂ及び後端部１７Ｃ）は、車両後方側Ｒｒほど上方に位置するように上側に凸に突曲し、前記吸気口８の面積が排気口１４の面積よりも大きくなっている。 [Structure of lower air flow path 9]
As shown in FIGS. 4 and 6, the lower end of the lower air flow path 9 is formed by a first lower wall 17 of the shroud body 7. The front end portion 17A of the first lower wall 17 is linearly inclined slightly rearward so as to be positioned higher toward the vehicle rear side Rr. Further, the portions other than the front end portion 17A (intermediate portion 17B and rear end portion 17C) are projected upward so as to be located upward as the vehicle rear side Rr, and the area of the intake port 8 is the exhaust port 14 area. It is larger than the area.

下側空気流路９の車両後方側Ｒｒの上端部は、シュラウド本体７の第１上壁１９により形成されている。第１上壁１９は、前記仕切り壁１６の後端部から車両後方側Ｒｒに延びており、仕切り壁１６よりも下方に位置する。第１上壁１９の前端部１９Ａ（図６参照）は上方に屈曲している。そして、この前端部１９Ａが仕切り壁１６の後端部に接続している。   The upper end portion of the lower air flow path 9 on the vehicle rear side Rr is formed by the first upper wall 19 of the shroud body 7. The first upper wall 19 extends from the rear end portion of the partition wall 16 to the vehicle rear side Rr, and is positioned below the partition wall 16. A front end portion 19A (see FIG. 6) of the first upper wall 19 is bent upward. The front end 19 </ b> A is connected to the rear end of the partition wall 16.

［上側空気流路１１の構造］
図６に示すように、上側空気流路１１の後半部１１Ｂの下端部は、シュラウド本体７の第２下壁１８により形成されている。第２下壁１８は、車両後方側Ｒｒほど上方に位置するように傾斜している。第２下壁１８の前端部１８Ａは下方に屈曲しており、この前端部１８Ａが仕切り壁１６の後端部に接続している。 [Structure of upper air flow path 11]
As shown in FIG. 6, the lower end portion of the rear half portion 11 </ b> B of the upper air flow path 11 is formed by the second lower wall 18 of the shroud body 7. The second lower wall 18 is inclined so as to be positioned higher toward the vehicle rear side Rr. The front end 18A of the second lower wall 18 is bent downward, and the front end 18A is connected to the rear end of the partition wall 16.

上側空気流路１１の上端部は、シュラウド本体７の第２上壁２１により形成されている。第２上壁２１は、車両後方側Ｒｒほど下方に位置するように傾斜している。前述のように、シュラウド本体７の第２下壁１８が、車両後方側Ｒｒほど上方に位置するように傾斜していることから、前記上側空気流路１１の後半部１１Ｂは、車両後方側Ｒｒになるにつれて上下方向の長さが短くなっている。この上側空気流路１１の後端部に、吸気ホース２２（図３参照）の前端部が連通接続し、吸気ホース２２の後端部がエンジンに連通接続している。   The upper end portion of the upper air flow path 11 is formed by the second upper wall 21 of the shroud body 7. The second upper wall 21 is inclined so as to be positioned downward as the vehicle rear side Rr. As described above, since the second lower wall 18 of the shroud main body 7 is inclined so as to be positioned upward as the vehicle rear side Rr, the rear half portion 11B of the upper air flow path 11 has a vehicle rear side Rr. As it becomes, the length in the vertical direction becomes shorter. A front end portion of the intake hose 22 (see FIG. 3) is connected to the rear end portion of the upper air flow path 11, and a rear end portion of the intake hose 22 is connected to the engine.

上側空気流路１１の前端部は、車両後方側Ｒｒほど上方に位置するように傾斜している。この前端部は前壁部材２０により形成されている。そして、吸気シュラウド６の成形工程において型抜きできるように、前壁部材２０が、シュラウド本体７の他の部分（前壁部材２０以外の部分）とは別体の部材で成形されている。後述のように、前記前壁部材２０は前記他の部分に溶着されている。溶着に換えて、両者を接着剤により接着することで接合する構造であってもよく、あるいは、両者を係合することで連結する構造であってもよい。   The front end portion of the upper air flow path 11 is inclined so as to be positioned higher toward the vehicle rear side Rr. The front end portion is formed by the front wall member 20. And the front wall member 20 is shape | molded by the member separate from the other part (parts other than the front wall member 20) of the shroud main body 7 so that it can mold-release in the formation process of the intake shroud 6. As will be described later, the front wall member 20 is welded to the other portion. Instead of welding, a structure in which both are bonded by an adhesive may be used, or a structure in which both are connected may be used.

図４，図５に示すように、前壁部材２０の側部２０Ｓは後下方に折曲し、側部２０Ｓの下端側からシュラウド本体７の幅方向外側にフランジ３０が張り出している。また、前壁部材２０の後側上端部から上方にフランジ３０が張り出している。   As shown in FIGS. 4 and 5, the side portion 20 </ b> S of the front wall member 20 is bent rearward and downward, and a flange 30 projects from the lower end side of the side portion 20 </ b> S to the outer side in the width direction of the shroud body 7. Further, a flange 30 projects upward from the rear upper end of the front wall member 20.

前壁部材２０の前側の下端部は下方に折曲している。そして、図６，図８に示すように、その下端部の下端側から車両後方側Ｒｒに、前記仕切り壁１６の前端部１６Ａが延びている。さらに、前壁部材２０の下端部の左右両端側から下方に縦壁３１が延びている。縦壁３１は縦に細長く形成され、縦壁３１の壁面はシュラウド本体７の幅方向を向いている。縦壁３１の下端は、前記仕切り壁１６の前端部１６Ａよりも下方に位置する。この縦壁３１の後端部と下端部から前記幅方向外側にフランジ３０が延びている。前記前壁部材２０の各フランジ３０の隣り合うもの同士は互いに連なっている。   The lower end portion on the front side of the front wall member 20 is bent downward. 6 and 8, a front end portion 16A of the partition wall 16 extends from the lower end side of the lower end portion to the vehicle rear side Rr. Further, the vertical wall 31 extends downward from the left and right ends of the lower end portion of the front wall member 20. The vertical wall 31 is elongated in the vertical direction, and the wall surface of the vertical wall 31 faces the width direction of the shroud body 7. The lower end of the vertical wall 31 is located below the front end portion 16 </ b> A of the partition wall 16. A flange 30 extends from the rear end and the lower end of the vertical wall 31 outward in the width direction. Adjacent ones of the flanges 30 of the front wall member 20 are connected to each other.

図５に示すように、前記側壁１５の上半部の前端部は、車両後方側Ｒｒほど上方に位置するように傾斜している。そして、前壁部材２０の各フランジ３０が重なるフランジ受け３５が、前記側壁１５の上半部の前端部から幅方向外側に張り出している。また、前記第２上壁２１の前端部にもフランジ受け３５が上方に張り出し形成されている。そして、前記フランジ３０がフランジ受け３５に重なって溶着されている。   As shown in FIG. 5, the front end portion of the upper half of the side wall 15 is inclined so as to be positioned higher toward the vehicle rear side Rr. And the flange receiver 35 with which each flange 30 of the front wall member 20 overlaps protrudes from the front end part of the upper half part of the said side wall 15 to the width direction outer side. Further, a flange receiver 35 is formed to project upward at the front end portion of the second upper wall 21. The flange 30 is welded so as to overlap the flange receiver 35.

前記側壁１５の下半部の前端部には、前記フランジ受け３５に連続するフランジ３６が幅方向外側に張り出し形成されている。   At the front end of the lower half of the side wall 15, a flange 36 that continues to the flange receiver 35 is formed so as to project outward in the width direction.

［上側取り付け部２３の連造］
図５に示すように、前記上側取り付け部２３は、前記第２上壁２１の前部から立ち上がる第１立ち上がり部２３Ａと、第１立ち上がり部２３Ａの上端部から車両後方側Ｒｒに延びる中間部２３Ｂと、中間部２３Ｂの後端部から立ち上がる第２立ち上がり部２３Ｃとから成る。上側取り付け部２３の背部は、背面の外方側が開放した断面コの字状に形成されている。 [Continuous construction of upper mounting portion 23]
As shown in FIG. 5, the upper mounting portion 23 includes a first rising portion 23A that rises from the front portion of the second upper wall 21, and an intermediate portion 23B that extends from the upper end portion of the first rising portion 23A to the vehicle rear side Rr. And a second rising portion 23C rising from the rear end portion of the intermediate portion 23B. The back part of the upper attachment part 23 is formed in a U-shaped cross section with the outer side on the back side open.

そして、第２立ち上がり部２３Ｃが、ボルト等の固定具４１により車体側の前記フードロックメンバ４に取り付け固定されている。   The second rising portion 23C is attached and fixed to the hood lock member 4 on the vehicle body side by a fixture 41 such as a bolt.

［下側取り付け部２４の構造］
図４，図６，図７に示すように、前記下側取り付け部２４は、前記第１下壁１７の前端部１７Ａの下面側から車両後方側Ｒｒに延びる基部２４Ａと、基部２４Ａの後端部から下方に延びる固定部２４Ｂとから成る。下側取り付け部２４の裏側は断面コの字状に形成されている。すなわち、基部２４Ａは下方が開放した断面コの字状に形成され、固定部２４Ｂは車両前方側Ｆｒが開放した断面コの字状に形成されている。 [Structure of lower mounting portion 24]
As shown in FIGS. 4, 6, and 7, the lower attachment portion 24 includes a base portion 24 </ b> A extending from the lower surface side of the front end portion 17 </ b> A of the first lower wall 17 to the vehicle rear side Rr, and a rear end of the base portion 24 </ b> A. And a fixed portion 24B extending downward from the portion. The back side of the lower attachment portion 24 is formed in a U-shaped cross section. That is, the base 24A is formed in a U-shaped cross-section with the lower part open, and the fixing part 24B is formed in a U-shaped cross-section with the vehicle front side Fr open.

さらに、基部２４Ａの上面と第１下壁１７の下面との間に支持壁２４Ｃが架設されている。この支持壁２４Ｃに、車両後方側Ｒｒが開放した下側切り欠き２９（第２脆弱部に相当）が形成されている。このように、前記下側取り付け部２４とシュラウド本体７との間に下側切り欠き２９が設けられている。   Further, a support wall 24 </ b> C is constructed between the upper surface of the base 24 </ b> A and the lower surface of the first lower wall 17. A lower notch 29 (corresponding to a second fragile portion) having an open vehicle rear side Rr is formed in the support wall 24C. Thus, the lower notch 29 is provided between the lower attachment portion 24 and the shroud body 7.

そして、前記固定部２４Ｂが、ボルト等の固定具４１により車体側の前記バンパメンバ３に取り付け固定されている。   And the said fixing | fixed part 24B is attached and fixed to the said bumper member 3 by the side of a vehicle body with the fixing tools 41, such as a volt | bolt.

図４，図５，図９に示すように、前記吸気口８の上端部と略同じ高さ位置に位置するとともに車両前後方向に沿う第１薄肉部２５がシュラウド本体７の側壁１５に形成されている。第１薄肉部２５は、側壁１５の表側の面に車両前後方向に沿う断面山形状の溝を形成して構成され、フランジ受け３５の後端（車両後方側Ｒｒの端縁）付近から前記仕切り壁１６の後端部付近にまでわたっている。   As shown in FIGS. 4, 5, and 9, a first thin portion 25 is formed on the side wall 15 of the shroud body 7, which is positioned at substantially the same height as the upper end portion of the intake port 8 and extends in the vehicle longitudinal direction. ing. The first thin portion 25 is formed by forming a groove having a mountain-shaped cross section along the vehicle front-rear direction on the front side surface of the side wall 15, and the partition from the vicinity of the rear end of the flange receiver 35 (the edge of the vehicle rear side Rr). It extends to the vicinity of the rear end of the wall 16.

また、図４，図８に示すように、前記吸気口８の下端部と略同じ高さ位置に位置するとともに車両前後方向に沿う第２薄肉部２６がシュラウド本体７の側壁１５の下端部に、この下端部の車両前後方向の全長にわたって形成されている。   As shown in FIGS. 4 and 8, the second thin portion 26 located at substantially the same height position as the lower end portion of the intake port 8 and along the vehicle longitudinal direction is formed at the lower end portion of the side wall 15 of the shroud body 7. The lower end portion is formed over the entire length in the vehicle front-rear direction.

さらに、図４に示すように、前記上側取り付け部２３とシュラウド本体７との間に、車両後方側Ｒｒが開放した上側切り欠き２８（第１脆弱部に相当）が設けられている。この上側切り欠き２８は、シュラウド本体７の前記第２上壁２１の上面と、上側取り付け部２３の第１立ち上がり壁２３Ａの後面（車両後方側Ｒｒを向く面）と、上側取り付け部２３の中間壁２３Ｂの下面とにより形成されている。   Further, as shown in FIG. 4, an upper notch 28 (corresponding to a first fragile portion) having an open vehicle rear side Rr is provided between the upper mounting portion 23 and the shroud body 7. The upper notch 28 is located between the upper surface of the second upper wall 21 of the shroud body 7, the rear surface of the first rising wall 23 </ b> A of the upper mounting portion 23 (the surface facing the vehicle rear side Rr), and the middle of the upper mounting portion 23. It is formed by the lower surface of the wall 23B.

本発明によれば、
（１） 図６に示すように、前記吸気口８からに下側空気流路９に入り込んだ空気は下側空気流路９を車両後方側Ｒｒに流れる（図６の矢印Ａ）。
そして、所定量の空気が前記連通口１２を通って（図６の矢印Ｂ）上側空気流路１１に入り込み、残りの空気が排気口１４からエンジンルーム１３内に排出される（図６の矢印Ｄ）。上側空気流路１１に入り込んだ空気は、上側空気流路１１を車両後方側Ｒｒに流れ（図６の矢印Ｃ）、エンジンへの給気口である前記空気送出口１０からエンジン側に送出される。 According to the present invention,
(1) As shown in FIG. 6, the air that has entered the lower air flow path 9 from the intake port 8 flows through the lower air flow path 9 to the vehicle rear side Rr (arrow A in FIG. 6).
Then, a predetermined amount of air enters the upper air flow path 11 through the communication port 12 (arrow B in FIG. 6), and the remaining air is discharged from the exhaust port 14 into the engine room 13 (arrow in FIG. 6). D). The air that has entered the upper air flow path 11 flows through the upper air flow path 11 to the vehicle rear side Rr (arrow C in FIG. 6), and is sent to the engine side from the air outlet 10 that is an air supply port to the engine. The

（２） 前記下側空気流路９の後端部に、エンジンルーム１３内に開口する排気口１４を有しているから、吸気シュラウド６の下部の強度を下げて、衝突時に前記下部を変形しやすくすることができる。これにより、被衝突体が歩行者であった場合、歩行者への危害を軽減することができる。 (2) Since the lower air flow path 9 has an exhaust port 14 that opens into the engine room 13 at the rear end, the strength of the lower portion of the intake shroud 6 is lowered, and the lower portion is deformed in the event of a collision. Can be easier. Thereby, when the collision object is a pedestrian, the harm to the pedestrian can be reduced.

（３） シュラウド本体７の側壁１５に第１薄肉部２５と第２薄肉部２６が形成されているから、衝突時の衝撃力の入力によって、側壁１５に割れもしくは変形が生じやすくなる。そして、側壁１５に割れもしくは変形が生じた場合、吸気シュラウド６が車両後方側Ｒｒに移動するため、歩行者への危害を軽減することができる。 (3) Since the first thin portion 25 and the second thin portion 26 are formed on the side wall 15 of the shroud main body 7, the side wall 15 is easily cracked or deformed by the input of impact force at the time of collision. And when the side wall 15 is cracked or deformed, the intake shroud 6 moves to the vehicle rear side Rr, so that the danger to pedestrians can be reduced.

（４） 前記上側取り付け部２３とシュラウド本体７との間に前記上側切り欠き２８が設けられ、前記下側取り付け部２４とシュラウド本体７との間に前記下側切り欠き２９が設けられているから、前記上側取り付け部２３や下側取り付け部２４が変形したりシュラウド本体７から分離したりして、シュラウド本体７が車両後方側Ｒｒに移動することで、歩行者への危害を軽減することができる。 (4) The upper notch 28 is provided between the upper attachment portion 23 and the shroud body 7, and the lower notch 29 is provided between the lower attachment portion 24 and the shroud body 7. From the above, the upper mounting portion 23 and the lower mounting portion 24 are deformed or separated from the shroud main body 7, and the shroud main body 7 moves to the vehicle rear side Rr, thereby reducing the danger to pedestrians. Can do.

（５） 図１０（ａ）〜図１０（ｃ）は、歩行者脚部インパクタ５０を用いた車両衝突時の吸気シュラウド６の作動のシミュレーション図である。図１０（ａ），図１０（ｂ）に示すように、車両の衝突時には、シュラウド本体７の上部が車両前方側Ｆｒ（矢印Ｅ方向）に回転するように変形する。これにより、荷重が下側取り付け部２４の下面に伝わる。その後に、前記第１薄肉部２５と第２薄肉部２６が破断し、下側取り付け部２４が破断することで、シュラウド本体７の下端部が車両後方側Ｒｒに押し込まれる（矢印Ｆ）。そのために、歩行者脚部の膝部のせん断の障害値が改善する。 (5) FIGS. 10A to 10C are simulation diagrams of the operation of the intake shroud 6 during a vehicle collision using the pedestrian leg impactor 50. FIG. As shown in FIGS. 10A and 10B, when the vehicle collides, the upper portion of the shroud body 7 is deformed so as to rotate in the vehicle front side Fr (in the direction of arrow E). As a result, the load is transmitted to the lower surface of the lower attachment portion 24. Thereafter, the first thin portion 25 and the second thin portion 26 are broken, and the lower attachment portion 24 is broken, whereby the lower end portion of the shroud body 7 is pushed into the vehicle rear side Rr (arrow F). Therefore, the obstacle value of the knee of the pedestrian leg improves.

（６） 車両前方側Ｆｒの吸気口８と車両後方側Ｒｒの空気送出口１０とを上下方向に（正面視で重ならないように）ずらしてあるから、ごみや水、雪などがエンジンに入りにくくすることができる。また、ごみや水などが吸気口８から下側空気流路９に入り込んでも、これらを前記排気口１４からエンジンルーム１３内に積極的に排出して、ごみや水などが空気送出口１０に届きにくくすることができる。 (6) Since the intake port 8 on the vehicle front side Fr and the air delivery port 10 on the vehicle rear side Rr are shifted in the vertical direction (so as not to overlap in front view), dust, water, snow, etc. enter the engine. Can be difficult. Further, even if dust or water enters the lower air flow path 9 from the intake port 8, these are positively discharged into the engine room 13 from the exhaust port 14, so that dust or water is discharged to the air outlet 10. It can be hard to reach.

（７） 前記第１下壁１７の中間部１７Ｂ及び後端部１７Ｃが、車両後方側Ｒｒほど上方に位置するように上側に凸に突曲して前記吸気口８の面積が排気口１４の面積よりも大きくなっているから、下側空気流路９の連通口１２付近での吸気流速を下げることができる。これにより、上側空気流路１１の吸気効率を向上させることができる。 (7) The intermediate portion 17B and the rear end portion 17C of the first lower wall 17 protrude upwardly so that the vehicle rear side Rr is located upward, so that the area of the intake port 8 is that of the exhaust port 14. Since it is larger than the area, the intake air flow velocity in the vicinity of the communication port 12 of the lower air flow path 9 can be lowered. Thereby, the intake efficiency of the upper air flow path 11 can be improved.

３ バンパメンバ
４ フードロックメンバ
６ 吸気シュラウド
８ 吸気口
９ 下側空気流路
１０ 空気送出口
１１ 上側空気流路
１２ 連通口
１３ エンジンルーム
１４ 排気口
１５ シュラウド側壁（側壁）
２３ 上側取り付け部
２４ 下側取り付け部
２５ 第１薄肉部
２６ 第２薄肉部
２８ 第１脆弱部（上側切り欠き）
２９ 第２脆弱部（下側切り欠き）
Ｆｒ 車両前方側
Ｒｒ 車両後方側 3 Bumper member 4 Hood lock member 6 Intake shroud 8 Intake port 9 Lower air flow path 10 Air outlet 11 Upper air flow path 12 Communication port 13 Engine room 14 Exhaust port 15 Shroud side wall (side wall)
23 upper attachment part 24 lower attachment part 25 first thin part 26 second thin part 28 first weak part (upper notch)
29 2nd weak part (lower notch)
Fr Vehicle front side Rr Vehicle rear side

Claims (5)

エンジンに吸気を案内して前記吸気を前記エンジンに取り込みやすくする吸気シュラウドの構造であって、
前記吸気シュラウドの上部に設けられた上側取り付け部と、下部に設けられた下側取り付け部とがそれぞれ車体側に取り付け固定されており、
前記吸気シュラウドは、車両前方側に向かって開口する吸気口を備えた下側空気流路と、
車両後方側に向かって開口する空気送出口を備えた上側空気流路と、
前記上側空気流路と下側空気流路を上下方向に連通させる連通口とを有し、
前記下側空気流路の車両後方側の端部に、エンジンルーム内に開口する排気口を有している吸気シュラウド構造。 A structure of an intake shroud that guides intake air to the engine and facilitates intake of the intake air into the engine,
An upper mounting portion provided at the upper portion of the intake shroud and a lower mounting portion provided at the lower portion are fixedly attached to the vehicle body side, respectively.
The intake shroud includes a lower air flow path having an intake opening that opens toward the front side of the vehicle;
An upper air flow path having an air outlet opening toward the vehicle rear side;
A communication port for communicating the upper air flow path and the lower air flow path in the vertical direction;
An intake shroud structure having an exhaust port that opens into an engine room at an end of the lower air flow path on the vehicle rear side. 前記上側空気流路の側部と前記下側空気流路の側部はシュラウド側壁により形成され、
前記吸気口の上端部と略同じ高さ位置に位置するとともに車両前後方向に沿う第１薄肉部が前記シュラウド側壁に形成されている請求項１記載の吸気シュラウド構造。 The side of the upper air flow path and the side of the lower air flow path are formed by shroud side walls,
2. The intake shroud structure according to claim 1, wherein a first thin wall portion that is positioned at substantially the same height as the upper end portion of the intake port and that extends along the vehicle front-rear direction is formed on the shroud side wall. 前記吸気口の下端部と略同じ高さ位置に位置するとともに車両前後方向に沿う第２薄肉部が前記シュラウド側壁に形成されている請求項２記載の吸気シュラウド構造。   3. The intake shroud structure according to claim 2, wherein a second thin wall portion that is positioned at substantially the same height as the lower end portion of the intake port and that extends along the vehicle front-rear direction is formed on the shroud side wall. 前記上側取り付け部とシュラウド本体との間に第１脆弱部が設けられ、前記下側取り付け部と前記シュラウド本体との間に第２脆弱部が設けられている請求項１〜３のいずれか一つに記載の吸気シュラウド構造。   The first fragile portion is provided between the upper attachment portion and the shroud body, and the second fragile portion is provided between the lower attachment portion and the shroud body. The intake shroud structure described in 1. 前記上側取り付け部は、前記車体側のフードロックメンバに取り付け固定され、
前記下側取り付け部は、前記車体側のバンパメンバに取り付け固定されている請求項１〜４のいずれか一つに記載の吸気シュラウド構造。 The upper attachment portion is fixedly attached to the hood lock member on the vehicle body side,
The intake shroud structure according to any one of claims 1 to 4, wherein the lower attachment portion is attached and fixed to a bumper member on the vehicle body side.
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