JP2015058887A

JP2015058887A - Air introducing structure for vehicle

Info

Publication number: JP2015058887A
Application number: JP2013195352A
Authority: JP
Inventors: 周文室井; Kanefumi Muroi
Original assignee: Suzuki Motor Corp
Current assignee: Suzuki Motor Corp
Priority date: 2013-09-20
Filing date: 2013-09-20
Publication date: 2015-03-30
Anticipated expiration: 2033-09-20
Also published as: JP6197525B2

Abstract

PROBLEM TO BE SOLVED: To provide an air introducing structure for a vehicle capable of protecting a heat exchanger even when external force is applied from the front of the vehicle, and securing cooling performance of the heat exchanger.SOLUTION: A duct passage 28 for connecting a heat exchanger 11 to an opening 30 of a front bumper 1 is composed of upper, lower, inside engine room and outside engine room air introducing guide plates 24-27. A front end in a vehicle direction, of the upper air introducing guide plate 24 is inclined upward, a front end in the vehicle direction, of the lower air introducing guide plate 25 is inclined downward, and a cross sectional area of the duct passage 28 is made larger at a front end in the vehicle direction than at a rear end in the vehicle direction. Engine side support pins 13 for supporting the heat exchanger 11 at an upper member 8 and a lower member 7 are formed integrally with the heat exchanger 11, transmission side support pins 14 are formed separately from the heat exchanger 11, and each of the transmission side support pins 14 has fragile claw parts 18 to disengage from the heat exchanger 11 when external force F is applied.

Description

本発明は、車両用導風構造に関し、特に横置き状態のエンジン及び変速機からなるパワートレインの車両後方に配置された熱交換器に風を導くのに好適なものである。 The present invention relates to a wind guide structure for a vehicle, and is particularly suitable for guiding wind to a heat exchanger disposed on the rear side of a power train composed of a horizontally placed engine and a transmission.

このような車両用導風構造としては、例えば下記特許文献１に記載されるものがある。この車両用導風構造では、熱交換器の前方に配置される車両幅方向に延びる導風ガイド板のうち、熱交換器側の車両後方部の剛性に対して車両前方部の剛性を低くし、車両に前方から軽度の外力が作用した場合に、導風ガイド板の車両前方部のみが変形し、熱交換器に外力が作用しないようにしている。 An example of such a vehicle wind guide structure is disclosed in Patent Document 1 below. In this vehicle wind guide structure, the rigidity of the front part of the vehicle is made lower than the rigidity of the rear part of the vehicle on the heat exchanger side among the wind guide plates arranged in the vehicle width direction arranged in front of the heat exchanger. When a slight external force is applied to the vehicle from the front, only the vehicle front portion of the wind guide plate is deformed so that the external force is not applied to the heat exchanger.

特開２０１２−１４４１２５号公報JP 2012-144125 A

しかしながら、前記特許文献１の車両用導風構造では、車両前方から大きな外力が作用した場合には、剛性の高い導風ガイド板の車両後方部が熱交換器に干渉し、熱交換器が損傷する可能性がある。 However, in the vehicle wind guide structure disclosed in Patent Document 1, when a large external force is applied from the front of the vehicle, the rear portion of the highly rigid wind guide plate interferes with the heat exchanger and the heat exchanger is damaged. there's a possibility that.

本発明は、上記のような問題点に着目してなされたものであり、車両前方から外力が作用した場合でも熱交換器を保護することが可能で、且つ熱交換器の冷却性能を確保することが可能な車両用導風構造を提供することを目的とするものである。 The present invention has been made paying attention to the problems as described above, and can protect the heat exchanger even when an external force is applied from the front of the vehicle, and ensure the cooling performance of the heat exchanger. An object of the present invention is to provide a vehicle wind guide structure that can be used.

本発明の第１の態様は、開口部を有するフロントバンパを車両前端部に配置し、前記フロントバンパの車両後方にエンジンルームを形成し、エンジン及び前記エンジンの車両幅方向端部に連結される変速機を備えたパワートレインを前記エンジンルーム内に配置し、前記エンジンルームの低い位置で車両幅方向に延びるロアメンバ及び前記ロアメンバの上方で車両幅方向に延びるアッパメンバを前記フロントバンパと前記パワートレインとで挟まれた空間に配置し、前記エンジンの車両前方よりも前記変速機側寄りに配置された熱交換器を前記アッパメンバ及び前記ロアメンバに支持し、前記熱交換器の車両前方端面から前記フロントバンパの車両後方端面に向けて導風ガイドを設けた車両の車両用導風構造であって、前記導風ガイドは、前記熱交換器の上方端部から前記開口部の上方側へと延び、クッション部材を介して前記フロントバンパの車両後方端面に当接する上側導風ガイド板と、前記熱交換器の下方端部から前記開口部の下方側へと延び、クッション部材を介して前記フロントバンパの車両後方端面に当接する下側導風ガイド板と、前記熱交換器の車両幅方向両端部から前記開口部の車両幅方向両端部側へと延び、クッション部材を介して前記フロントバンパの車両後方端面に当接するエンジンルーム内側導風ガイド板及びエンジンルーム外側導風ガイド板と、前記上側導風ガイド板及び下側導風ガイド板及びエンジンルーム内側導風ガイド板及びエンジンルーム外側導風ガイド板でトンネル状に構成され、前記熱交換器の車両前方端面及び前記開口部の車両後方端面を連絡するダクト通路とを備え、前記上側導風ガイド板の車両前方端部を車両後方端部よりも上向きに傾斜し、前記下側導風ガイド板の車両前方端部を車両後方端部よりも下向きに傾斜し、前記ダクト通路の車両前方端部での断面積を車両後方端部での断面積よりも大きくしたことを特徴とする。 According to a first aspect of the present invention, a front bumper having an opening is disposed at a front end of a vehicle, an engine room is formed behind the front bumper in a vehicle, and is connected to an engine and an end of the engine in the vehicle width direction. A power train having a transmission is disposed in the engine room, and a lower member extending in the vehicle width direction at a low position of the engine room and an upper member extending in the vehicle width direction above the lower member are disposed on the front bumper and the power train. A heat exchanger disposed in a space sandwiched between the engine and closer to the transmission side than the vehicle front of the engine is supported by the upper member and the lower member, and the front bumper extends from the vehicle front end surface of the heat exchanger. A vehicle wind guide structure provided with a wind guide toward a rear end surface of the vehicle, wherein the wind guide is a front An upper wind guide plate that extends from the upper end of the heat exchanger to the upper side of the opening and abuts against the vehicle rear end surface of the front bumper via a cushion member, and the lower end of the heat exchanger A lower wind guide plate extending to the lower side of the opening and abutting against a vehicle rear end surface of the front bumper via a cushion member; and a vehicle width direction of the opening from both ends of the heat exchanger in the vehicle width direction An engine room inner wind guide plate and an engine room outer wind guide plate that extend toward both ends and abut against the vehicle rear end surface of the front bumper via a cushion member, and the upper wind guide guide and the lower wind guide The guide plate and the engine room inner air guide guide plate and the engine room outer air guide guide plate are configured in a tunnel shape, and the vehicle front end surface of the heat exchanger and the vehicle rear end surface of the opening portion. A duct passage that communicates with the vehicle, and the vehicle front end of the upper air guide plate is inclined upward from the vehicle rear end, and the vehicle front end of the lower air guide plate is more than the vehicle rear end. Inclined downward, the cross-sectional area at the vehicle front end of the duct passage is made larger than the cross-sectional area at the vehicle rear end.

本発明の第２の態様は、前記エンジンルーム内側導風ガイド板の近接位置に配置され、前記熱交換器と一体的に形成されて前記熱交換器を前記アッパメンバ及び前記ロアメンバに支持するエンジン側支持ピンと、前記エンジンルーム外側導風ガイド板の近接位置に配置され、前記熱交換器とは別体に形成されて前記熱交換器を前記アッパメンバ及び前記ロアメンバに支持する変速機側支持ピンと、前記変速機側支持ピンに形成され、外力が作用した場合に前記熱交換器から離脱する脆弱部とを備えるのが好ましい。 According to a second aspect of the present invention, the engine side is disposed in the vicinity of the engine room inner wind guide plate and is formed integrally with the heat exchanger to support the heat exchanger on the upper member and the lower member. A support pin, a transmission-side support pin that is disposed at a position close to the engine room outer wind guide plate, is formed separately from the heat exchanger, and supports the heat exchanger to the upper member and the lower member; It is preferable to include a fragile portion formed on the transmission-side support pin and detached from the heat exchanger when an external force is applied.

本発明の第３の態様は、前記熱交換器に取付けられ、前記エンジンルーム外側導風ガイド板よりも車両幅方向外側の位置で前記熱交換器から車両前方側に突出する金属製の縦壁板と、前記縦壁板及び前記エンジンルーム外側導風ガイド板を連結する懸架片とを備えるのが好ましい。 A third aspect of the present invention is a metal vertical wall that is attached to the heat exchanger and protrudes forward from the heat exchanger at a position outside the engine room outer wind guide plate in the vehicle width direction. It is preferable to provide a board and a suspension piece for connecting the vertical wall board and the engine room outer wind guide plate.

本発明の第４の態様は、前記変速機側支持ピンの隣接位置に前記縦壁板を前記熱交換器に取付ける取付部を設けるのが好ましい。 In the fourth aspect of the present invention, it is preferable to provide an attachment portion for attaching the vertical wall plate to the heat exchanger at a position adjacent to the transmission-side support pin.

このように、前記の第１の態様によれば、開口部を有するフロントバンパを車両前端部に配置してその車両後方にエンジンルームを形成し、そのエンジンルーム内にエンジンと変速機とを車両幅方向に連結して構成されるパワートレインを配置する。また、エンジンルームの低い位置で車両幅方向に延びるロアメンバ及びロアメンバの上方で車両幅方向に延びるアッパメンバをフロントバンパとパワートレインとで挟まれた空間に配置する。また、エンジンの車両前方よりも変速機側寄りに配置された熱交換器をアッパメンバ及びロアメンバに支持し、熱交換器の車両前方端面からフロントバンパの車両後方端面に向けて導風ガイドを設ける。この導風ガイドは、熱交換器の上方端部から開口部の上方側へと延び且つクッション部材を介してフロントバンパの車両後方端面に当接する上側導風ガイド板、熱交換器の下方端部から開口部の下方側へと延び且つクッション部材を介してフロントバンパの車両後方端面に当接する下側導風ガイド板、熱交換器の車両幅方向両端部から開口部の車両幅方向両端部側へと延び且つクッション部材を介してフロントバンパの車両後方端面に当接するエンジンルーム内側導風ガイド板及びエンジンルーム外側導風ガイド板を有する。これらの上側導風ガイド板及び下側導風ガイド板及びエンジンルーム内側導風ガイド板及びエンジンルーム外側導風ガイド板によって、熱交換器の車両前方端面及び開口部の車両後方端面を連絡するトンネル状のダクト通路を構成する。そして、上側導風ガイド板の車両前方端部を車両後方端部よりも上向きに傾斜し、下側導風ガイド板の車両前方端部を車両後方端部よりも下向きに傾斜すると共に、ダクト通路の車両前方端部での断面積を車両後方端部での断面積よりも大きくした。そのため、開口部からエンジンルーム内に流れ込んだ走行風のより多くをダクト通路内に導入し、ダクト通路内からエンジンルーム側へ漏れ出すことなく熱交換器に案内することができる。これによって、熱交換器の冷却性能を確保することができる。また、車両前方から外力が作用した場合に、クッション部材によってフロントバンパの車両後方への移動を吸収すると共に、導風ガイドのうち、上側導風ガイド板は上方外側に、下側導風ガイド板は下方外側に変形して衝撃を吸収することができる。また、その際、ダクト通路の車両前方端部での断面積が車両後方端部での断面積より大きいことから、上側導風ガイド板及び下側導風ガイド板については確実に、エンジンルーム内側導風ガイド板及びエンジンルーム外側導風ガイド板についても、熱交換器の中央部側への倒れ込みを抑制することができる。従って、車両前方から外力が作用した場合であっても、熱交換器への外力伝達を緩和することができ、導風ガイドと熱交換器との干渉を低減して熱交換器を保護することができる。 Thus, according to the first aspect, the front bumper having the opening is arranged at the front end of the vehicle to form the engine room at the rear of the vehicle, and the engine and the transmission are arranged in the engine room. A power train that is connected in the width direction is arranged. Further, a lower member extending in the vehicle width direction at a low position of the engine room and an upper member extending in the vehicle width direction above the lower member are arranged in a space sandwiched between the front bumper and the power train. Further, a heat exchanger disposed closer to the transmission side than the front of the vehicle of the engine is supported by the upper member and the lower member, and a wind guide is provided from the vehicle front end surface of the heat exchanger toward the vehicle rear end surface of the front bumper. This wind guide extends from the upper end of the heat exchanger to the upper side of the opening, and contacts the vehicle rear end surface of the front bumper via the cushion member, and the lower end of the heat exchanger From the both ends of the heat exchanger in the vehicle width direction to the both ends of the opening in the vehicle width direction from the both ends in the vehicle width direction of the heat exchanger An engine room inner air guide guide plate and an engine room outer air guide guide plate that extend to the rear and abut against the vehicle rear end surface of the front bumper via the cushion member. These upper wind guide guide plate, lower wind guide guide plate, engine room inner wind guide guide plate, and engine room outer wind guide guide plate connect the vehicle front end surface of the heat exchanger and the vehicle rear end surface of the opening. A cylindrical duct passage. The vehicle front end of the upper wind guide plate is inclined upward from the vehicle rear end, the vehicle front end of the lower wind guide plate is inclined downward from the vehicle rear end, and the duct passage The cross-sectional area at the vehicle front end is made larger than the cross-sectional area at the vehicle rear end. Therefore, more of the traveling wind flowing into the engine room from the opening can be introduced into the duct passage and guided to the heat exchanger without leaking from the duct passage to the engine room side. Thereby, the cooling performance of the heat exchanger can be ensured. Further, when an external force is applied from the front of the vehicle, the cushion member absorbs the movement of the front bumper to the rear of the vehicle, and among the wind guides, the upper wind guide guide plate is located on the upper outer side and the lower wind guide guide plate. Can be deformed outward and absorb the shock. In this case, since the cross-sectional area of the duct passage at the front end of the vehicle is larger than the cross-sectional area at the rear end of the vehicle, the upper air guide plate and the lower air guide plate The air guide guide plate and the engine room outer side air guide guide plate can also be prevented from falling into the center of the heat exchanger. Therefore, even when an external force is applied from the front of the vehicle, the external force transmission to the heat exchanger can be relaxed, and the heat exchanger can be protected by reducing the interference between the air guide and the heat exchanger. Can do.

また、前記の第２の態様によれば、熱交換器をアッパメンバ及びロアメンバに支持するエンジン側支持ピンを熱交換器と一体的に形成してエンジンルーム内側導風ガイド板の近接位置に配置する。また、同じく熱交換器をアッパメンバ及びロアメンバに支持する変速機側支持ピンは、熱交換器と別体に形成して、エンジンルーム外側導風ガイド板の近傍に配置する。そして、外力が作用した場合に熱交換器から離脱する脆弱部を変速機側支持ピンに形成した。そのため、車両前方から車両幅方向変速機側に外力が作用した場合、脆弱部を起点に変速機側支持ピンが熱交換器から離脱し、エンジン側支持ピンを中心に熱交換器の変速機側支持ピン側を車両後方に回転させることができる。一般に、変速機の車両前方は、エンジンの車両前方よりも補機などの部品の配置がなく、空間が形成されている。従って、車両前方からの外力がエンジンルーム外側導風ガイド板に伝達されると、熱交換器の変速機側支持ピン側がエンジン側支持ピンを中心に回転して、変速機の車両前方の空間に移動される。これによって、熱交換器への外力伝達を緩和することができ、熱交換器を保護することができる。 Further, according to the second aspect, the engine side support pins for supporting the heat exchanger on the upper member and the lower member are formed integrally with the heat exchanger, and are disposed in the vicinity of the engine room inner wind guide plate. . Similarly, the transmission-side support pins that support the heat exchanger on the upper member and the lower member are formed separately from the heat exchanger and are arranged in the vicinity of the engine room outer air guide plate. And the weak part which remove | deviates from a heat exchanger when an external force acts was formed in the transmission side support pin. Therefore, when an external force is applied from the front of the vehicle to the vehicle width direction transmission side, the transmission side support pin is detached from the heat exchanger starting from the fragile part, and the transmission side of the heat exchanger is centered on the engine side support pin. The support pin side can be rotated rearward of the vehicle. In general, the front part of the transmission has a space with no arrangement of components such as auxiliary machines, compared to the front part of the engine. Therefore, when an external force from the front of the vehicle is transmitted to the engine room outer air guide plate, the transmission-side support pin side of the heat exchanger rotates around the engine-side support pin and enters the space in front of the transmission in the vehicle. Moved. Thereby, external force transmission to the heat exchanger can be relaxed, and the heat exchanger can be protected.

また、前記の第３の態様によれば、エンジンルーム外側導風ガイド板よりも車両幅方向外側の位置で熱交換器から車両前方側に突出する金属製の縦壁板を熱交換器に取付け、その縦壁板とエンジンルーム外側導風ガイド板とを懸架片で連結した。そのため、車両前方から車両幅方向変速機側に外力が作用した場合、フロントバンパの車両後方への移動に伴い、金属製の縦壁板が車両後方に押されて変速機側支持ピンが熱交換器から離脱する。その際、金属製の縦壁板の車両後方への移動によってエンジンルーム外側導風ガイド板が金属製の縦壁板に引っ張られるので、エンジンルーム外側導風ガイド板が熱交換器の中央部側に倒れ込むのを確実に防止することができる。これによって、熱交換器と導風ガイドとの干渉を緩和することができ、熱交換器を保護することができる。 Further, according to the third aspect, the metal vertical wall plate protruding from the heat exchanger toward the front side of the vehicle at a position outside the engine room outer air guide guide plate in the vehicle width direction is attached to the heat exchanger. The vertical wall plate and the engine room outer wind guide plate were connected by a suspension piece. Therefore, when an external force acts on the vehicle width direction transmission side from the front of the vehicle, the metal vertical wall plate is pushed to the rear of the vehicle as the front bumper moves to the rear of the vehicle, and the transmission side support pins exchange heat. Leave the vessel. At that time, the engine room outer wind guide plate is pulled by the metal vertical wall plate due to the movement of the metal vertical wall plate toward the rear of the vehicle, so the engine room outer wind guide plate is located on the center side of the heat exchanger. Can be reliably prevented from falling down. Thereby, interference with a heat exchanger and a wind guide can be relieved, and a heat exchanger can be protected.

また、前記の第４の態様によれば、縦壁板を熱交換器に取付けるための取付部を変速機側支持ピンの隣接位置に設けたため、縦壁板に車両前方から外力が作用した場合、取付部を介して縦壁板が受ける荷重を取付部に近い変速機側支持ピンに伝達し、熱交換器から変速機側支持ピンを確実に離脱することができる。これによって、エンジン側支持ピンを中心に熱交換器を回転させて車両後方に移動させることができ、その結果、熱交換器への外力伝達を緩和して、熱交換器を保護することができる。 In addition, according to the fourth aspect, since the attachment portion for attaching the vertical wall plate to the heat exchanger is provided at a position adjacent to the transmission-side support pin, an external force acts on the vertical wall plate from the front of the vehicle. The load received by the vertical wall plate via the mounting portion can be transmitted to the transmission-side support pin close to the mounting portion, and the transmission-side support pin can be reliably detached from the heat exchanger. As a result, the heat exchanger can be rotated around the engine side support pin and moved rearward of the vehicle, and as a result, the external force transmission to the heat exchanger can be relaxed and the heat exchanger can be protected. .

図１は、本発明の車両用導風装置の一実施形態が適用された車両前部の平面図である。FIG. 1 is a plan view of a front portion of a vehicle to which an embodiment of a vehicle wind guide device of the present invention is applied. 図２は、図１の車両前部の側面図である。FIG. 2 is a side view of the front portion of the vehicle shown in FIG. 図３は、図１のエンジンルームの正面図である。FIG. 3 is a front view of the engine room of FIG. 図４は、図１〜図３の熱交換器及びパワートレインの斜視図である。FIG. 4 is a perspective view of the heat exchanger and the power train of FIGS. 図５は、図４の熱交換器における縦壁板の取付部周辺の拡大図である。FIG. 5 is an enlarged view of the vicinity of a vertical wall plate attachment portion in the heat exchanger of FIG. 4. 図６は、図５の変速機側支持ピンの展開図である。6 is a development view of the transmission-side support pin of FIG. 図７は、図１のＸ−Ｘ断面図である。7 is a cross-sectional view taken along line XX in FIG. 図８は、車両前方から外力が作用したときの図１の車両前部の平面図である。FIG. 8 is a plan view of the front portion of the vehicle in FIG. 1 when an external force is applied from the front of the vehicle.

次に、本発明の車両用導風構造の一実施形態について図面を参照しながら説明する。図１は、本実施形態の車両前部の平面図、図２は、図１の車両前部の側面図、図３は、図１のエンジンルームの正面図、図４は、図１〜図３の熱交換器及びパワートレインの斜視図である。本実施形態の車両では、車両前方端部にフロントバンパ１が配置され、その車両後方にエンジンルーム２が形成されている。このエンジンルーム２内には、エンジン３と、その車両幅方向端部に連結された変速機４が配置されており、これらエンジン３及び変速機４によってパワートレイン５が構成されている。つまり、本実施形態では、エンジンルーム２内にパワートレイン５が横置き状態で配置されている。 Next, an embodiment of a wind guide structure for a vehicle according to the present invention will be described with reference to the drawings. 1 is a plan view of the front portion of the vehicle according to the present embodiment, FIG. 2 is a side view of the front portion of the vehicle in FIG. 1, FIG. 3 is a front view of the engine room in FIG. 1, and FIG. 3 is a perspective view of a heat exchanger 3 and a power train. FIG. In the vehicle of the present embodiment, the front bumper 1 is disposed at the front end of the vehicle, and the engine room 2 is formed at the rear of the vehicle. In the engine room 2, an engine 3 and a transmission 4 connected to an end portion in the vehicle width direction are disposed, and a power train 5 is configured by the engine 3 and the transmission 4. That is, in this embodiment, the power train 5 is disposed in the engine room 2 in a horizontally placed state.

エンジンルーム２の車両幅方向両端部には、サイドメンバ６が車両前後方向に延在する。また、エンジンルーム２の車両前方端部にあってパワートレイン５とフロントバンパ１の間の低い位置には、車両幅方向に延びるロアメンバ７が配置され、その上方には、同じく車両幅方向に延びるアッパメンバ８が配置されている。アッパメンバ８とサイドメンバ６はサポートブレース９で連結されている。なお、ロアメンバ７とサイドメンバ６も車両前方端部下部で連結されている。また、フロントバンパ１の車両後方には、フロントバンパメンバ１０が配置されている。 Side members 6 extend in the vehicle front-rear direction at both ends of the engine room 2 in the vehicle width direction. Further, a lower member 7 extending in the vehicle width direction is disposed at a low position between the power train 5 and the front bumper 1 at the vehicle front end portion of the engine room 2, and above the same, the lower member 7 also extends in the vehicle width direction. An upper member 8 is disposed. The upper member 8 and the side member 6 are connected by a support brace 9. The lower member 7 and the side member 6 are also connected at the lower part of the vehicle front end. A front bumper member 10 is disposed behind the front bumper 1 in the vehicle.

エンジン３内を冷却するための冷却水は熱交換器（ラジエータ及びコンデンサ）１１で冷却される。熱交換器１１の車両後方にはファンシュラウド１２が設けられており、ファンシュラウド１２には図示しないファンモータが取付けられている。熱交換器１１は、通常は走行風によって内部に通水される冷却水を冷却するものであるが、走行風がない或いは不足する場合にはファンモータによって風を起こし、その風を熱交換器１１に通風して冷却水を冷却する。ファンシュラウド１２は、ファンモータによって創生された風を熱交換器１１の車両前方端面全面に拡散させる働きを有する。 Cooling water for cooling the inside of the engine 3 is cooled by a heat exchanger (a radiator and a condenser) 11. A fan shroud 12 is provided behind the heat exchanger 11 in the vehicle, and a fan motor (not shown) is attached to the fan shroud 12. The heat exchanger 11 cools the cooling water that is normally passed through by the traveling wind. However, when the traveling wind is absent or insufficient, the fan motor generates wind, and the wind is used as the heat exchanger. 11 is ventilated to cool the cooling water. The fan shroud 12 has a function of diffusing wind generated by the fan motor over the entire front end surface of the vehicle of the heat exchanger 11.

本実施形態では、熱交換器１１の車両左方端部、即ち変速機側端部に上下方向に長手な縦壁板１６が取付けられている。図５は、図４の熱交換器１１における縦壁板１６の取付部周辺の拡大図である。この縦壁板１６は、アルミニウムなどの金属製の板材からなる。この縦壁板１６は、熱交換器１１の車両幅方向端部の側壁に沿って配置されており、縦壁板１６の幅方向が車両前後方向になっている。そのため、縦壁板１６の幅方向が熱交換器１１から車両前方に突出している。この縦壁板１６の長手方向中央部は熱交換器１１から車両幅方向外側に離れており、縦壁板１６の上下端部が熱交換器１１側に折り曲げられ、その折り曲げ部の上下端部が、夫々、取付部１７として熱交換器１１に取付けられている。なお、縦壁板１６の長手方向中央部は、後述するように、エンジンルーム外側導風ガイド板に連結される。また、縦壁板１６の熱交換器１１への取付部１７は、後述する変速機側支持ピン１４の隣接位置に配置されている。 In the present embodiment, a vertical wall plate 16 that is long in the vertical direction is attached to the left end portion of the heat exchanger 11, that is, the transmission side end portion. FIG. 5 is an enlarged view of the vicinity of the attachment portion of the vertical wall plate 16 in the heat exchanger 11 of FIG. 4. The vertical wall plate 16 is made of a metal plate material such as aluminum. This vertical wall board 16 is arrange | positioned along the side wall of the vehicle width direction edge part of the heat exchanger 11, and the width direction of the vertical wall board 16 is a vehicle front-back direction. Therefore, the width direction of the vertical wall plate 16 protrudes from the heat exchanger 11 toward the front of the vehicle. The central portion of the vertical wall plate 16 in the longitudinal direction is away from the heat exchanger 11 in the vehicle width direction, and the upper and lower ends of the vertical wall plate 16 are bent toward the heat exchanger 11, and the upper and lower ends of the bent portion are However, each is attached to the heat exchanger 11 as the attachment portion 17. In addition, the longitudinal direction center part of the vertical wall board 16 is connected with an engine room outer side wind guide plate so that it may mention later. Moreover, the attachment part 17 to the heat exchanger 11 of the vertical wall board 16 is arrange | positioned in the adjacent position of the transmission side support pin 14 mentioned later.

本実施形態では、熱交換器１１をエンジン３の車両前方よりも変速機４側寄りに配置し、その熱交換器１１をアッパメンバ８及びロアメンバ７に支持する。熱交換器１１をアッパメンバ８及びロアメンバ７に支持するにあたっては、エンジン側支持ピン１３及び変速機側支持ピン１４を用いる。図６は、図５の変速機側支持ピン１４の展開図である。このうち、エンジン側支持ピン１３は、熱交換器１１の車両幅方向エンジン側端部において、熱交換器１１から上下方向に突出するように当該熱交換器１１と一体的に形成されている。そして、このエンジン側支持ピン１３をアッパメンバ８及びロアメンバ７に差し込むことにより、熱交換器１１はアッパメンバ８及びロアメンバ７に対して回転自在に支持される。一方、変速機側支持ピン１４は、図６に示すように、熱交換器１１とは別体に形成され、熱交換器１１側の基部に二股の爪部１８が形成されている。 In the present embodiment, the heat exchanger 11 is disposed closer to the transmission 4 side than the vehicle front of the engine 3, and the heat exchanger 11 is supported by the upper member 8 and the lower member 7. In supporting the heat exchanger 11 on the upper member 8 and the lower member 7, the engine side support pin 13 and the transmission side support pin 14 are used. 6 is a development view of the transmission-side support pin 14 of FIG. Among these, the engine-side support pin 13 is formed integrally with the heat exchanger 11 so as to protrude from the heat exchanger 11 in the vertical direction at the engine-side end of the heat exchanger 11 in the vehicle width direction. Then, by inserting the engine side support pin 13 into the upper member 8 and the lower member 7, the heat exchanger 11 is rotatably supported with respect to the upper member 8 and the lower member 7. On the other hand, as shown in FIG. 6, the transmission-side support pin 14 is formed separately from the heat exchanger 11, and a bifurcated claw portion 18 is formed at the base on the heat exchanger 11 side.

これに対し、熱交換器１１の上下端面には、車両幅方向変速機側端部において、前記爪部１８を嵌め込む凹部１９が形成され、この凹部１９に変速機側支持ピン１４の爪部１８が被嵌される。その結果、熱交換器１１の車両幅方向変速機側端部から変速機側支持ピン１４が上下方向に突出し、この変速機側支持ピン１４をアッパメンバ８及びロアメンバ７に差し込むことにより熱交換器１１がアッパメンバ８及びロアメンバ７に支持される。なお、後述するように、車両前方から熱交換器１１に外力が作用したとき、爪部１８が破断して変速機側支持ピン１４は熱交換器１１から離脱してしまう。そのため、この爪部１８が変速機側支持ピン１４の脆弱部を構成する。ちなみに、図６に示す符号２０はラジエータサポートブラケット、符号２１は弾性体である。 In contrast, the upper and lower end surfaces of the heat exchanger 11 are formed with recesses 19 into which the claw portions 18 are fitted at the vehicle width direction transmission side end portions. The claw portions of the transmission side support pins 14 are formed in the recess portions 19. 18 is fitted. As a result, the transmission-side support pin 14 projects vertically from the vehicle width direction transmission-side end of the heat exchanger 11, and the transmission-side support pin 14 is inserted into the upper member 8 and the lower member 7, whereby the heat exchanger 11. Is supported by the upper member 8 and the lower member 7. As will be described later, when an external force is applied to the heat exchanger 11 from the front of the vehicle, the claw portion 18 is broken and the transmission-side support pin 14 is detached from the heat exchanger 11. Therefore, the claw portion 18 constitutes a fragile portion of the transmission side support pin 14. Incidentally, reference numeral 20 shown in FIG. 6 is a radiator support bracket, and reference numeral 21 is an elastic body.

フロントバンパ１のうち、熱交換器１１の車両前方には、熱交換器１１相当の開口部３０が形成されている。本実施形態では、この開口部３０において、熱交換器１１の車両前方端面からフロントバンパ１の車両後方端面に向けて導風ガイド２２が形成されている。この導風ガイド２２は、熱交換器１１の上方端部からフロントバンパ１の開口部３０の上方側へと延び、クッション部材２３を介してフロントバンパ１の車両後方端面に当接する上側導風ガイド板２４を有する。また、この導風ガイド２２は、熱交換器１１の下方端部からフロントバンパ１の開口部３０の下方側へと延び、クッション部材２３を介してフロントバンパ１の車両後方端面に当接する下側導風ガイド板２５を有する。また、この導風ガイド２２は、熱交換器１１の車両幅方向一方の端部、具体的にはエンジン３の車両前方側端部からフロントバンパ１の開口部３０の車両幅方向一方の端部、具体的にはエンジン３の車両前方側端部側へと延び、クッション部材２３を介してフロントバンパ１の車両後方端面に当接するエンジンルーム内側導風ガイド板２６を有する。また、この導風ガイド２２は、熱交換器１１の車両幅方向他方の端部、具体的には変速機４の車両前方側端部からフロントバンパ１の開口部３０の車両幅方向他方の端部、具体的には変速機４の車両前方側端部側へと延び、クッション部材２３を介してフロントバンパ１の車両後方端面に当接するエンジンルーム外側導風ガイド板２７を有する。なお、これらの導風ガイド板２４〜２７は樹脂製である。また、クッション部材２３は、スポンジなどの弾性部材で構成される。 In the front bumper 1, an opening 30 corresponding to the heat exchanger 11 is formed in front of the heat exchanger 11 in the vehicle. In the present embodiment, the air guide 22 is formed in the opening 30 from the vehicle front end surface of the heat exchanger 11 toward the vehicle rear end surface of the front bumper 1. The wind guide 22 extends from the upper end of the heat exchanger 11 to the upper side of the opening 30 of the front bumper 1 and is in contact with the vehicle rear end face of the front bumper 1 via the cushion member 23. A plate 24 is provided. The air guide 22 extends from the lower end of the heat exchanger 11 to the lower side of the opening 30 of the front bumper 1 and is in contact with the vehicle rear end surface of the front bumper 1 via the cushion member 23. An air guide plate 25 is provided. The wind guide 22 is one end in the vehicle width direction of the heat exchanger 11, specifically, one end in the vehicle width direction from the vehicle front side end of the engine 3 to the opening 30 of the front bumper 1. Specifically, it has an engine room inner wind guide plate 26 that extends toward the vehicle front end side of the engine 3 and contacts the vehicle rear end surface of the front bumper 1 via the cushion member 23. The air guide 22 is provided at the other end in the vehicle width direction of the heat exchanger 11, specifically, from the vehicle front side end of the transmission 4 to the other end in the vehicle width direction of the opening 30 of the front bumper 1. Part, specifically, an engine room outer wind guide plate 27 that extends toward the vehicle front side end side of the transmission 4 and contacts the vehicle rear end surface of the front bumper 1 via the cushion member 23. Note that these air guide plates 24 to 27 are made of resin. The cushion member 23 is made of an elastic member such as a sponge.

そして、上側導風ガイド板２４及び下側導風ガイド板２５及びエンジンルーム内側導風ガイド板２６及びエンジンルーム外側導風ガイド板２７によって、熱交換器１１の車両前方端面及びフロントバンパ１の開口部の車両後方端面を連絡するダクト通路２８が断面方形のトンネル状に構成されている。また、前述した縦壁板１６は、上下方向中央部の上下２カ所において、懸架片２９によってエンジンルーム外側導風ガイド板２７に連結されている。更に、本実施形態では、例えば図７に明示するように、上側導風ガイド板２４の車両前方端部を車両後方端部よりも上向きに傾斜し、下側導風ガイド板２５の車両前方端部を車両後方端部よりも下向きに傾斜している。その結果、ダクト通路２８の車両前方端部での断面積が車両後方端部での断面積よりも大きく設定されている。 Then, the vehicle front end face of the heat exchanger 11 and the opening of the front bumper 1 are opened by the upper air guide guide plate 24, the lower air guide guide plate 25, the engine room inner air guide guide plate 26, and the engine room outer air guide guide plate 27. A duct passage 28 communicating with the rear end face of the vehicle is formed in a tunnel shape having a square cross section. Further, the vertical wall plate 16 described above is connected to the engine room outer air guide guide plate 27 by suspension pieces 29 at two locations, the upper and lower portions in the central portion in the vertical direction. Further, in the present embodiment, for example, as clearly shown in FIG. 7, the vehicle front end of the upper wind guide plate 24 is inclined upward from the vehicle rear end, and the vehicle front end of the lower wind guide plate 25 is The portion is inclined downward from the rear end of the vehicle. As a result, the cross-sectional area at the vehicle front end of the duct passage 28 is set larger than the cross-sectional area at the vehicle rear end.

図７は、図１のＸ−Ｘ断面図、図８は、車両前方から外力が作用したときの図１の車両前部の平面図である。例えば図７に示すように、車両前方から外力Ｆがフロントバンパ１に作用した場合、クッション部材２３を介して導風ガイド２２が車両後方に押される。そのとき、上側導風ガイド板２４の車両前方端部を車両後方端部よりも上向きに傾斜し、下側導風ガイド板２５の車両前方端部を車両後方端部よりも下向きに傾斜しているので、図に破線で示すように、上側導風ガイド板２４は更に上向きに変形し、下側導風ガイド板２５は更に下向きに変形し、その結果、上側導風ガイド板２４も下側導風ガイド板２５も熱交換器１１の中央部側に倒れ込みにくい。もし、上側導風ガイド板２４や下側導風ガイド板２５が熱交換器１１の中央部側に倒れ込んでしまうと、外力Ｆがそれらガイド板２４、２５を経て熱交換器１１に作用し、熱交換器１１が破損する虞がある。それに対し、上側導風ガイド板２４及び下側導風ガイド板２５が熱交換器１１の中央部側に倒れ込みにくい本実施形態の導風構造では、熱交換器１１への外力伝達を緩和することができ、熱交換器１１を保護することができる。 7 is a cross-sectional view taken along the line XX in FIG. 1, and FIG. 8 is a plan view of the front portion of the vehicle in FIG. 1 when an external force is applied from the front of the vehicle. For example, as shown in FIG. 7, when an external force F acts on the front bumper 1 from the front of the vehicle, the air guide 22 is pushed to the rear of the vehicle via the cushion member 23. At that time, the vehicle front end portion of the upper air guide plate 24 is inclined upward from the vehicle rear end portion, and the vehicle front end portion of the lower air guide guide plate 25 is inclined downward from the vehicle rear end portion. Therefore, as shown by a broken line in the figure, the upper air guide plate 24 is further deformed upward, and the lower air guide plate 25 is further deformed downward. As a result, the upper air guide plate 24 is also lowered. The air guide plate 25 is also unlikely to fall into the center of the heat exchanger 11. If the upper air guide plate 24 or the lower air guide plate 25 falls to the center of the heat exchanger 11, the external force F acts on the heat exchanger 11 through the guide plates 24, 25, The heat exchanger 11 may be damaged. On the other hand, in the air guide structure of the present embodiment in which the upper air guide guide plate 24 and the lower air guide guide plate 25 are unlikely to fall into the central portion side of the heat exchanger 11, the external force transmission to the heat exchanger 11 is reduced. And the heat exchanger 11 can be protected.

また、図８に示すように、車両前方から車両幅方向変速機側に外力Ｆが作用した場合、前述のように導風ガイド２２を介して熱交換器１１や縦壁板１６に外力Ｆが伝達される。このとき、縦壁板１６を熱交換器１１に取付けるための取付部１７が変速機側支持ピン１４の隣接位置に設けられているため、縦壁板１６に作用する外力Ｆが、取付部１７を介して、取付部１７に近い変速機側支持ピン１４に伝達される。外力Ｆが変速機側支持ピン１４に伝達されると脆弱部である爪部１８が破断し、その爪部１８を起点に変速機側支持ピン１４が熱交換器１１から離脱する。変速機側支持ピン１４が離脱すると、残ったエンジン側支持ピン１３を中心に熱交換器１１の変速機側支持ピン１４側を車両後方に回転させることができる。変速機４の車両前方には空間が形成されていることが多いので、熱交換器１１とパワートレイン５の干渉を回避又は軽減することが可能となる。また、このとき、縦壁板１６とエンジンルーム外側導風ガイド板２７が懸架片２９で連結されているため、金属製の縦壁板１６の車両後方への移動によってエンジンルーム外側導風ガイド板２７が縦壁板１６に引っ張られ、エンジンルーム外側導風ガイド板２７が熱交換器１１の中央部側に倒れ込むのを確実に防止することができる。これらによって、熱交換器１１と導風ガイド２２との干渉を緩和することができ、熱交換器１１を保護することができる。 Further, as shown in FIG. 8, when an external force F acts on the vehicle width direction transmission side from the front of the vehicle, the external force F is applied to the heat exchanger 11 and the vertical wall plate 16 via the air guide 22 as described above. Communicated. At this time, since the attachment portion 17 for attaching the vertical wall plate 16 to the heat exchanger 11 is provided at a position adjacent to the transmission-side support pin 14, an external force F acting on the vertical wall plate 16 is applied to the attachment portion 17. Is transmitted to the transmission-side support pin 14 close to the mounting portion 17. When the external force F is transmitted to the transmission-side support pin 14, the claw portion 18 that is a fragile portion is broken, and the transmission-side support pin 14 is detached from the heat exchanger 11 with the claw portion 18 as a starting point. When the transmission-side support pin 14 is detached, the transmission-side support pin 14 side of the heat exchanger 11 can be rotated rearward of the heat exchanger 11 around the remaining engine-side support pin 13. Since a space is often formed in front of the transmission 4 in the vehicle, interference between the heat exchanger 11 and the power train 5 can be avoided or reduced. At this time, since the vertical wall plate 16 and the engine room outer wind guide plate 27 are connected by the suspension piece 29, the engine vertical outer wind guide plate is moved by moving the metal vertical wall plate 16 rearward of the vehicle. 27 is pulled by the vertical wall plate 16, and it is possible to reliably prevent the engine room outer air guide guide plate 27 from falling to the center side of the heat exchanger 11. By these, interference with the heat exchanger 11 and the air guide 22 can be relieved, and the heat exchanger 11 can be protected.

このように本実施形態の車両用導風構造では、開口部３０を有するフロントバンパ１を車両前端部に配置してその車両後方にエンジンルーム２を形成し、そのエンジンルーム２内にエンジン３と変速機４とを車両幅方向に連結して構成されるパワートレイン５を配置する。また、エンジンルーム２の低い位置で車両幅方向に延びるロアメンバ７及びロアメンバ７の上方で車両幅方向に延びるアッパメンバ８をフロントバンパ１とパワートレイン５とで挟まれた空間に配置する。また、エンジン３の車両前方よりも変速機４側寄りに配置された熱交換器１１をアッパメンバ８及びロアメンバ７に支持し、熱交換器１１の車両前方端面からフロントバンパ１の車両後方端面に向けて導風ガイド２２を設ける。この導風ガイド２２は、熱交換器１１の上方端部から開口部３０の上方側へと延び且つクッション部材２３を介してフロントバンパ１の車両後方端面に当接する上側導風ガイド板２４、熱交換器１１の下方端部から開口部３０の下方側へと延び且つクッション部材２３を介してフロントバンパ１の車両後方端面に当接する下側導風ガイド板２５、熱交換器１１の車両幅方向両端部から開口部３０の車両幅方向両端部側へと延び且つクッション部材２３を介してフロントバンパ１の車両後方端面に当接するエンジンルーム内側導風ガイド板２６及びエンジンルーム外側導風ガイド板２７を有する。これらの上側導風ガイド板２４及び下側導風ガイド板２５及びエンジンルーム内側導風ガイド板２６及びエンジンルーム外側導風ガイド板２７によって、熱交換器１１の車両前方端面及び開口部３０の車両後方端面を連絡するトンネル状のダクト通路２８を構成する。そして、上側導風ガイド板２４の車両前方端部を車両後方端部よりも上向きに傾斜し、下側導風ガイド板２５の車両前方端部を車両後方端部よりも下向きに傾斜すると共に、ダクト通路２８の車両前方端部での断面積を車両後方端部での断面積よりも大きくした。そのため、開口部３０からエンジンルーム２内に流れ込んだ走行風のより多くをダクト通路２８内に導入し、ダクト通路２８内からエンジンルーム２側へ漏れ出すことなく熱交換器１１に案内することができる。これによって、熱交換器１１の冷却性能を確保することができる。また、車両前方から外力Ｆが作用した場合に、クッション部材２３によってフロントバンパ１の車両後方への移動を吸収すると共に、導風ガイド２２のうち、上側導風ガイド板２４は上方外側に、下側導風ガイド板２５は下方外側に変形して衝撃を吸収することができる。また、その際、ダクト通路２８の車両前方端部での断面積が車両後方端部での断面積より大きいことから、上側導風ガイド板２４及び下側導風ガイド板２５については確実に、エンジンルーム内側導風ガイド板２６及びエンジンルーム外側導風ガイド板２７についても、熱交換器１１の中央部側への倒れ込みを抑制することができる。従って、車両前方から外力Ｆが作用した場合であっても、熱交換器１１への外力伝達を緩和することができ、導風ガイド２２と熱交換器１１との干渉を低減して熱交換器１１を保護することができる。 Thus, in the vehicle wind guide structure of the present embodiment, the front bumper 1 having the opening 30 is disposed at the front end of the vehicle to form the engine room 2 at the rear of the vehicle, and the engine 3 and the engine room 2 are arranged in the engine room 2. A power train 5 configured by connecting the transmission 4 to the vehicle width direction is disposed. Further, a lower member 7 extending in the vehicle width direction at a low position of the engine room 2 and an upper member 8 extending in the vehicle width direction above the lower member 7 are arranged in a space sandwiched between the front bumper 1 and the power train 5. Further, the heat exchanger 11 disposed closer to the transmission 4 than the front of the engine 3 is supported by the upper member 8 and the lower member 7, and the front end surface of the heat exchanger 11 faces the rear end surface of the front bumper 1. The air guide 22 is provided. The wind guide 22 extends from the upper end of the heat exchanger 11 to the upper side of the opening 30 and is in contact with the vehicle rear end surface of the front bumper 1 via the cushion member 23. A lower air guide guide plate 25 extending from the lower end of the exchanger 11 to the lower side of the opening 30 and contacting the vehicle rear end surface of the front bumper 1 via the cushion member 23, and the vehicle width direction of the heat exchanger 11 An engine room inner wind guide guide plate 26 and an engine room outer wind guide guide plate 27 that extend from both ends to both ends of the opening 30 in the vehicle width direction and abut against the vehicle rear end face of the front bumper 1 via the cushion member 23. Have The upper wind guide plate 24, the lower wind guide plate 25, the engine room inner wind guide plate 26, and the engine room outer wind guide plate 27 are used to drive the vehicle front end face of the heat exchanger 11 and the opening 30. A tunnel-shaped duct passage 28 that communicates with the rear end face is formed. The vehicle front end portion of the upper air guide plate 24 is inclined upward from the vehicle rear end portion, the vehicle front end portion of the lower air guide guide plate 25 is inclined downward from the vehicle rear end portion, and The cross-sectional area at the vehicle front end of the duct passage 28 is made larger than the cross-sectional area at the vehicle rear end. Therefore, it is possible to introduce more of the traveling wind flowing into the engine room 2 from the opening 30 into the duct passage 28 and guide it to the heat exchanger 11 without leaking from the duct passage 28 to the engine room 2 side. it can. Thereby, the cooling performance of the heat exchanger 11 can be ensured. Further, when an external force F is applied from the front of the vehicle, the cushion member 23 absorbs the movement of the front bumper 1 toward the rear of the vehicle, and the upper air guide guide plate 24 of the air guide 22 is disposed upward and outward. The side air guide plate 25 can be deformed outward and absorb the impact. At that time, since the cross-sectional area at the vehicle front end portion of the duct passage 28 is larger than the cross-sectional area at the vehicle rear end portion, the upper air guide guide plate 24 and the lower air guide guide plate 25 are surely The engine room inner air guide guide plate 26 and the engine room outer air guide guide plate 27 can also be prevented from falling into the center of the heat exchanger 11. Therefore, even when the external force F acts from the front of the vehicle, the external force transmission to the heat exchanger 11 can be relaxed, and interference between the air guide 22 and the heat exchanger 11 can be reduced to reduce the heat exchanger. 11 can be protected.

また、熱交換器１１をアッパメンバ８及びロアメンバ７に支持するエンジン側支持ピン１３を熱交換器１１と一体的に形成してエンジンルーム内側導風ガイド板２６の近接位置に配置する。また、同じく熱交換器１１をアッパメンバ８及びロアメンバ７に支持する変速機側支持ピン１４は、熱交換器１１と別体に形成して、エンジンルーム外側導風ガイド板２７の近傍に配置する。そして、外力Ｆが作用した場合に熱交換器１１から離脱する脆弱部として爪部１８を変速機側支持ピン１４に形成した。そのため、車両前方から車両幅方向変速機側に外力Ｆが作用した場合、爪部１８を起点に変速機側支持ピン１４が熱交換器１１から離脱し、エンジン側支持ピン１３を中心に熱交換器１１の変速機側支持ピン１４側を車両後方に回転させることができる。一般に、変速機４の車両前方は、エンジン３の車両前方よりも補機などの部品の配置がなく、空間が形成されている。従って、車両前方からの外力Ｆがエンジンルーム外側導風ガイド板２７に伝達されると、熱交換器１１の変速機側支持ピン１４側がエンジン側支持ピン１３を中心に回転して、変速機４の車両前方の空間に移動される。これによって、熱交換器１１への外力伝達を緩和することができ、熱交換器１１を保護することができる。 In addition, the engine side support pins 13 that support the heat exchanger 11 on the upper member 8 and the lower member 7 are formed integrally with the heat exchanger 11 and disposed in the vicinity of the engine room inner wind guide plate 26. Similarly, the transmission-side support pins 14 that support the heat exchanger 11 on the upper member 8 and the lower member 7 are formed separately from the heat exchanger 11 and are disposed in the vicinity of the engine room outer air guide plate 27. And the claw part 18 was formed in the transmission side support pin 14 as a weak part which detach | leaves from the heat exchanger 11 when the external force F acts. Therefore, when an external force F acts on the vehicle width direction transmission side from the front of the vehicle, the transmission side support pin 14 is detached from the heat exchanger 11 with the claw portion 18 as a starting point, and heat exchange is performed centering on the engine side support pin 13. The transmission side support pin 14 side of the device 11 can be rotated rearward of the vehicle. In general, the front part of the transmission 4 has less space than the front part of the engine 3, such as auxiliary equipment, and a space is formed. Therefore, when the external force F from the front of the vehicle is transmitted to the engine room outer wind guide plate 27, the transmission side support pin 14 side of the heat exchanger 11 rotates around the engine side support pin 13, and the transmission 4 It is moved to the space ahead of the vehicle. Thereby, external force transmission to the heat exchanger 11 can be relaxed, and the heat exchanger 11 can be protected.

また、エンジンルーム外側導風ガイド板２７よりも車両幅方向外側の位置で熱交換器１１から車両前方側に突出する金属製の縦壁板１６を熱交換器１１に取付け、その縦壁板１６とエンジンルーム外側導風ガイド板２７とを懸架片２９で連結した。そのため、車両前方から車両幅方向変速機側に外力Ｆが作用した場合、フロントバンパ１の車両後方への移動に伴い、金属製の縦壁板１６が車両後方に押されて変速機側支持ピン１４が熱交換器１１から離脱する。その際、金属製の縦壁板１６の車両後方への移動によってエンジンルーム外側導風ガイド板２７が金属製の縦壁板１６に引っ張られるので、エンジンルーム外側導風ガイド板２７が熱交換器１１の中央部側に倒れ込むのを確実に防止することができる。これによって、熱交換器１１と導風ガイド２２との干渉を緩和することができ、熱交換器１１を保護することができる。 Further, a metal vertical wall plate 16 projecting from the heat exchanger 11 to the vehicle front side at a position on the vehicle width direction outer side than the engine room outer wind guide plate 27 is attached to the heat exchanger 11, and the vertical wall plate 16. And the engine room outer side wind guide plate 27 are connected by a suspension piece 29. Therefore, when an external force F acts on the vehicle width direction transmission side from the front of the vehicle, as the front bumper 1 moves rearward of the vehicle, the metal vertical wall plate 16 is pushed rearward of the vehicle and the transmission side support pin 14 leaves the heat exchanger 11. At this time, the engine room outer wind guide plate 27 is pulled by the metal vertical wall plate 16 due to the movement of the metal vertical wall plate 16 toward the rear of the vehicle. 11 can be reliably prevented from falling to the center side. Thereby, interference with the heat exchanger 11 and the air guide 22 can be relieved, and the heat exchanger 11 can be protected.

また、縦壁板１６を熱交換器１１に取付けるための取付部１７を変速機側支持ピン１４の隣接位置に設けたため、縦壁板１６に車両前方から外力Ｆが作用した場合、取付部１７を介して縦壁板１６が受ける荷重を取付部１７に近い変速機側支持ピン１４に伝達し、熱交換器１１から変速機側支持ピン１４を確実に離脱することができる。これによって、エンジン側支持ピン１３を中心に熱交換器１１を回転させて車両後方に移動させることができ、その結果、熱交換器１１への外力伝達を緩和して、熱交換器１１を保護することができる。 In addition, since the attachment portion 17 for attaching the vertical wall plate 16 to the heat exchanger 11 is provided at a position adjacent to the transmission-side support pin 14, when the external force F acts on the vertical wall plate 16 from the front of the vehicle, the attachment portion 17 Thus, the load received by the vertical wall plate 16 can be transmitted to the transmission-side support pin 14 close to the mounting portion 17, and the transmission-side support pin 14 can be reliably detached from the heat exchanger 11. As a result, the heat exchanger 11 can be rotated around the engine side support pin 13 and moved rearward of the vehicle. As a result, the external force transmission to the heat exchanger 11 is relaxed and the heat exchanger 11 is protected. can do.

以上、本発明の実施形態を開示したが、当業者によっては本発明の範囲を逸脱することなく変更が加えられ得ることは明白である。全てのこのような修正及び等価物が次の請求項に含まれることが意図されている。 Although the embodiments of the present invention have been disclosed above, it will be apparent to those skilled in the art that changes can be made without departing from the scope of the present invention. All such modifications and equivalents are intended to be included in the following claims.

１フロントバンパ
２エンジンルーム
３エンジン
４変速機
５パワートレイン
６サイドメンバ
７ロアメンバ
８アッパメンバ
９サポートブレース
１０フロントバンパメンバ
１１熱交換器（ラジエータ及びコンデンサ）
１２ファンシュラウド
１３エンジン側支持ピン
１４変速機側支持ピン
１６縦壁板
１７取付部
１８爪部（脆弱部）
１９凹部
２０ラジエータサポートブラケット
２１弾性体
２２導風ガイド
２３クッション部材
２４上側導風ガイド板
２５下側導風ガイド板
２６エンジンルーム内側導風ガイド板
２７エンジンルーム外側導風ガイド板
２８ダクト通路
２９懸架片
３０開口部 1 Front bumper 2 Engine room 3 Engine 4 Transmission 5 Power train 6 Side member 7 Lower member 8 Upper member 9 Support brace 10 Front bumper member 11 Heat exchanger (radiator and condenser)
12 Fan shroud 13 Engine side support pin 14 Transmission side support pin 16 Vertical wall plate 17 Mounting portion 18 Claw portion (fragile portion)
DESCRIPTION OF SYMBOLS 19 Recess 20 Radiator support bracket 21 Elastic body 22 Wind guide 23 Cushion member 24 Upper wind guide plate 25 Lower wind guide plate 26 Engine room inner wind guide plate 27 Engine room outer wind guide guide 28 Duct passage 29 Suspension Piece 30 opening

Claims

A front bumper having an opening is arranged at the front end of the vehicle,
An engine room is formed at the rear of the front bumper vehicle,
A power train including an engine and a transmission connected to an end of the engine in the vehicle width direction is disposed in the engine room;
A lower member extending in the vehicle width direction at a low position of the engine room and an upper member extending in the vehicle width direction above the lower member are disposed in a space sandwiched between the front bumper and the power train,
A heat exchanger disposed closer to the transmission side than the front of the vehicle of the engine is supported by the upper member and the lower member;
A vehicle wind guide structure in which a wind guide is provided from a vehicle front end surface of the heat exchanger toward a vehicle rear end surface of the front bumper,
The air guide is
An upper wind guide plate extending from the upper end of the heat exchanger to the upper side of the opening and contacting the vehicle rear end surface of the front bumper via a cushion member;
A lower wind guide plate that extends from the lower end of the heat exchanger to the lower side of the opening and contacts the vehicle rear end surface of the front bumper via a cushion member;
An engine room inner wind guide plate and an engine room that extend from both ends of the heat exchanger in the vehicle width direction to both ends of the opening in the vehicle width direction and abut against the vehicle rear end surface of the front bumper via a cushion member An outer air guide plate,
The upper wind guide plate, the lower wind guide plate, the engine room inner wind guide plate and the engine room outer wind guide plate are configured in a tunnel shape, and the vehicle front end face of the heat exchanger and the opening vehicle A duct passage connecting the rear end face,
Inclining the vehicle front end of the upper air guide plate upward from the vehicle rear end,
Inclining the vehicle front end of the lower wind guide plate downward from the vehicle rear end,
A vehicle wind guide structure characterized in that a cross-sectional area at a vehicle front end portion of the duct passage is made larger than a cross-sectional area at a vehicle rear end portion.

An engine-side support pin that is disposed in the vicinity of the engine room inner air guide plate and is formed integrally with the heat exchanger and supports the heat exchanger to the upper member and the lower member;
A transmission-side support pin that is disposed near the engine room outer wind guide plate, is formed separately from the heat exchanger, and supports the heat exchanger on the upper member and the lower member;
The vehicular air guide structure according to claim 1, further comprising a weakened portion formed on the transmission-side support pin and detached from the heat exchanger when an external force is applied.

A metal vertical wall plate that is attached to the heat exchanger and protrudes from the heat exchanger to the vehicle front side at a position outside the engine room outer air guide guide plate in the vehicle width direction;
The vehicle wind guide structure according to claim 2, further comprising a suspension piece connecting the vertical wall plate and the engine room outer wind guide guide plate.

The vehicle wind guide structure according to claim 3, wherein an attachment portion for attaching the vertical wall plate to the heat exchanger is provided at a position adjacent to the transmission-side support pin.