JP2009001161A - External air introduction structure - Google Patents

External air introduction structure Download PDF

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JP2009001161A
JP2009001161A JP2007164111A JP2007164111A JP2009001161A JP 2009001161 A JP2009001161 A JP 2009001161A JP 2007164111 A JP2007164111 A JP 2007164111A JP 2007164111 A JP2007164111 A JP 2007164111A JP 2009001161 A JP2009001161 A JP 2009001161A
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outside air
air introduction
drive source
introduction opening
deflector
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Tatsuya Tsuzuki
達哉 都築
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Toyota Motor Corp
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Toyota Motor Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To more easily and efficiently perform introduction of external air to a drive source installation space than ever before. <P>SOLUTION: An external air introduction opening 24 is formed on a vehicle body 28, and a cooling system part 18 is installed in the drive source installation space so as to be opposed to the external air introduction opening 24 in such a state that it is supported on a radiator support 22. A deflector 30, i.e., a plate-like member formed with a through hole is laid between a back surface of the vehicle body 28 and an upper front end of the radiator support 22. The deflector 30 is installed such that the front end is positioned above an upper end of the external air introduction opening 24, and a project-out part 28a projecting below the front end of the deflector 30 exists on the vehicle body 28. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、車両内部に形成された駆動源設置空間内に外気を導入する外気導入構造に関する。   The present invention relates to an outside air introduction structure for introducing outside air into a drive source installation space formed inside a vehicle.

自動車等の車両では、車体前部に形成された外気導入用開口から導入した空気を、ラジエータや空調用コンデンサ等の冷却系部品の冷却に利用している。具体的には、冷却系部品の背部に配置した冷却ファンによる強制的な空気流れ、および、車両の走行に伴い生じる相対的な空気流れによって外気を吸い込み、当該外気により冷却系部品の冷却（熱交換）を行っている。空調用コンデンサやラジエータは、その周囲を囲む略枠状のラジエータサポートと呼ばれる支持部材に支持された状態で、エンジンルームなどの駆動源設置空間に設置される。   In vehicles such as automobiles, air introduced from an outside air introduction opening formed at the front of the vehicle body is used for cooling cooling system components such as a radiator and an air conditioning condenser. Specifically, outside air is sucked in by a forced air flow by a cooling fan arranged at the back of the cooling system component and a relative air flow generated when the vehicle travels, and cooling (cooling) of the cooling system component by the outside air is performed. Exchange). The air conditioning condenser and the radiator are installed in a drive source installation space such as an engine room in a state of being supported by a support member called a substantially frame-shaped radiator support surrounding the periphery.

ここで、駆動源設置空間は、冷却系部品および冷却ファンが設置される冷却系部品用隔室と、エンジン等の駆動源が設置される駆動源用隔室と、に区画される。駆動源用隔室は、一般に「エンジンコンパートメント」と呼ばれ、冷却系部品用隔室の背後に位置している。この駆動源用隔室で生じた熱気が前方に移動し、冷却系部品の前方まで回り込んでくる場合がある。かかる熱気の回り込みを防止するために、従来から、支持部材の前端と、開口部が形成されている車体ボディの裏面との間にデフレクタと呼ばれる板状部材を掛け渡した構造が知られている。このデフレクタにより駆動源用隔室から冷却系部品前方への熱気の回り込みが防止されている。   Here, the drive source installation space is partitioned into a cooling system component compartment in which a cooling system component and a cooling fan are installed, and a drive source compartment in which a drive source such as an engine is installed. The drive source compartment is commonly referred to as the “engine compartment” and is located behind the cooling system compartment. The hot air generated in the drive source compartment may move forward and wrap around to the front of the cooling system components. In order to prevent such hot air from wrapping around, a structure in which a plate-like member called a deflector is stretched between the front end of the support member and the back surface of the vehicle body body in which the opening is formed is conventionally known. . This deflector prevents hot air from flowing from the drive source compartment to the front of the cooling system components.

このデフレクタには、駆動源用隔室にも外気を導くためのスリット孔が複数設けられている場合がある。かかるスリット孔を設けることにより、外気導入用開口から流入した外気を、コンデンサやラジエータの周辺を通すことなく、直接、駆動源用隔室に導くことができる。そして、これにより、駆動源用隔室内の雰囲気温度の上昇、ひいては、部品熱害等の発生を低減できる。   In some cases, the deflector is provided with a plurality of slit holes for guiding outside air to the drive source compartment. By providing such a slit hole, the outside air flowing in from the outside air introduction opening can be directly guided to the drive source compartment without passing through the periphery of the condenser and the radiator. As a result, it is possible to reduce the rise in the ambient temperature in the drive source compartment and, in turn, the occurrence of component heat damage.

実開平５−３２０６４号公報Japanese Utility Model Publication No. 5-32064

しかしながら、デザイン上の制約などの都合上、外気導入用開口として十分な広さの開口を確保できない場合があった。特に、小型車両などでは、外気導入用開口は小さくなりがちであった。また、ある程度の大きさの外気導入用開口が確保できた場合であっても、車両の走行速度が低い場合には、当該外気導入用開口から導入される外気流量が少なくなりがちであった。その結果、駆動源用隔室内の空気が滞留しやすく、駆動源用隔室内の温度上昇を招く場合があった。   However, due to design restrictions and the like, there has been a case where it is not possible to secure a sufficiently wide opening as an outside air introduction opening. In particular, in a small vehicle or the like, the outside air introduction opening tends to be small. Even when an opening for introducing outside air having a certain size can be secured, the flow rate of outside air introduced through the opening for introducing outside air tends to decrease when the vehicle traveling speed is low. As a result, the air in the drive source compartment tends to stay, and the temperature in the drive source compartment may increase.

特許文献１には、駆動源用隔室に効率的に外気を導入するための外気導入構造が開示されている。この特許文献１の技術によれば、効率的に外気を駆動源用隔室に導くことができるため、駆動源用隔室内の温度上昇を抑えることができる。しかし、特許文献１では、外気導入のために専用の通気路を設ける必要があるなど、全体として構成が複雑であった。   Patent Document 1 discloses an outside air introduction structure for efficiently introducing outside air into a drive source compartment. According to the technique of Patent Document 1, since the outside air can be efficiently guided to the drive source compartment, the temperature rise in the drive source compartment can be suppressed. However, in Patent Document 1, the configuration is complicated as a whole, for example, it is necessary to provide a dedicated air passage for introducing outside air.

そこで、本発明では、簡易、かつ、効率的に駆動源用隔室に外気を導入できうる外気導入構造を提供することを目的とする。   Therefore, an object of the present invention is to provide an outside air introduction structure that can introduce outside air into a drive source compartment easily and efficiently.

本発明の外気導入構造は、車両内部に形成された駆動源設置空間内に外気を導入する外気導入構造であって、前記駆動源設置空間の前面を構成する車体ボディに形成された開口であって、前記駆動源設置空間内に外気を導入する外気導入開口と、少なくとも前面が開口された支持部材で支持され、前記外気導入開口に対向して前記駆動源設置空間内に設置される冷却系部品と、前記支持部材の上側前端と前記車体ボディの裏面との間に掛け渡されることで前記駆動源設置空間を冷却系部品用隔室と駆動源用隔室とに仕切る板状部材であって、前記外気導入開口から導入された外気の一部を前記駆動源用隔室に導く貫通孔が形成された板状部材と、を備え、前記板状部材は、その前端が前記外気導入開口の上端より上方に位置するように設置されることを特徴とする。   The outside air introduction structure of the present invention is an outside air introduction structure that introduces outside air into a drive source installation space formed inside a vehicle, and is an opening formed in a vehicle body that forms the front surface of the drive source installation space. And an outside air introduction opening for introducing outside air into the drive source installation space, and a cooling system that is supported by a support member having at least a front surface opened and is installed in the drive source installation space so as to face the outside air introduction opening. A plate-like member that divides the drive source installation space into a cooling system component compartment and a drive source compartment by being spanned between a component, the upper front end of the support member, and the rear surface of the vehicle body. A plate-like member formed with a through hole for guiding a part of the outside air introduced from the outside air introduction opening to the drive source compartment, and the front end of the plate-like member is the outside air introduction opening. So that it is positioned above the top edge of the And wherein the Rukoto.

他の好適な態様では、前記板状部材を傾斜させて設置することで、前記板状部材の前端を前記外気導入開口の上端より上方に位置させる。   In another preferred aspect, the front end of the plate-like member is positioned above the upper end of the outside air introduction opening by inclining and installing the plate-like member.

他の好適な態様では、前記板状部材が水平に設置される場合、前記外気導入開口は、その上端が前記支持部材の上側前端よりも下方に位置するような位置および大きさで形成される。   In another preferred aspect, when the plate-like member is installed horizontally, the outside air introduction opening is formed at a position and a size such that the upper end thereof is located below the upper front end of the support member. .

なお、冷却系部品用隔室とは、駆動源設置空間のうち冷却系部品を設置するための隔室であり、支持部材および板状部材により仕切られる隔室である。また、駆動源用隔室とは、駆動源設置空間のうち冷却系部品用隔室を除いた空間であり、一般に、エンジンコンパートメントと呼ばれる隔室である。   The cooling system component compartment is a compartment for installing the cooling system component in the drive source installation space, and is a compartment partitioned by the support member and the plate-like member. The drive source compartment is a space excluding the cooling system component compartment in the drive source installation space, and is generally a compartment called an engine compartment.

本発明によれば、板状部材の前端が外気導入開口の上端より上方に位置するようになっている。換言すれば、車体ボディに、板状部材の前端より下方に突出する突き出し部分が存在することになる。この車体ボディの突き出し部分により、駆動源用隔室に流れ込む外気流量を増加させることができる。つまり、本発明によれば、より効率的に駆動源用隔室に外気を導入できる。   According to the present invention, the front end of the plate-like member is positioned above the upper end of the outside air introduction opening. In other words, a protruding portion that protrudes downward from the front end of the plate-like member exists in the vehicle body. The protruding portion of the vehicle body body can increase the flow rate of outside air flowing into the drive source compartment. That is, according to the present invention, the outside air can be introduced into the drive source compartment more efficiently.

以下、本発明の実施形態について図面を参照して説明する。図１は、本発明の実施形態である外気導入構造１２が設けられた車両１０の概略側面図である。この車両１０の前側には、エンジンや燃料電池などの駆動源１６が設置される駆動源設置空間１４、すなわち、一般的に「エンジンルーム」と呼ばれる空間が設けられている。外気導入構造１２は、この駆動源設置空間１４に外気を高率的に導入する構造である。   Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic side view of a vehicle 10 provided with an outside air introduction structure 12 according to an embodiment of the present invention. On the front side of the vehicle 10, a drive source installation space 14 in which a drive source 16 such as an engine or a fuel cell is installed, that is, a space generally called an “engine room” is provided. The outside air introduction structure 12 is a structure that introduces outside air into the drive source installation space 14 at a high rate.

駆動源設置空間１４には、エンジン等の駆動源１６の他に、当該駆動源１６を冷却するためのラジエータ１８ｂや、車室の空調に用いられる空調用コンデンサ１８ａといった冷却系部品（以下、ラジエータとコンデンサを区別しない場合は単に「冷却系部品１８」という）も設置される。これらの冷却系部品１８は、駆動源設置空間１４の前端近傍、換言すれば、車両１０の前端近傍に設置される。この冷却系部品１８の前側に位置する車体ボディには、外気を駆動源設置空間１４に導入するための外気導入開口２４が形成されている。   In the drive source installation space 14, in addition to a drive source 16 such as an engine, a cooling system component (hereinafter referred to as a radiator) such as a radiator 18b for cooling the drive source 16 and an air conditioning condenser 18a used for air conditioning of a passenger compartment. And “cooling system component 18”) are also installed if they are not distinguished from each other. These cooling system components 18 are installed near the front end of the drive source installation space 14, in other words, near the front end of the vehicle 10. An outside air introduction opening 24 for introducing outside air into the drive source installation space 14 is formed in the vehicle body body located on the front side of the cooling system component 18.

冷却系部品１８は、ラジエータサポート２２と呼ばれる支持部材で支持されている。ラジエータサポート２２は、冷却系部品の周囲を囲む略枠体である。そして、このラジエータサポート２２、ファンシュラウド２３、および後述するデフレクタにより、駆動源設置空間１４は、冷却系部品１８が設置される冷却系部品隔室と、駆動源等が設置される駆動源用隔室と、に分離される。以下では、駆動源用隔室のことを「エンジンコンパートメント」と呼ぶ。なお、「エンジンコンパートメント」は、その名称中に「エンジン」が含まれているが、エンジンに代えてモータや燃料電池等の駆動源が設置されてもよい。   The cooling system component 18 is supported by a support member called a radiator support 22. The radiator support 22 is a substantially frame surrounding the periphery of the cooling system component. The radiator support 22, the fan shroud 23, and a deflector described later make the drive source installation space 14 a cooling system component compartment in which the cooling system component 18 is installed, and a drive source partition in which the drive source and the like are installed. And the chamber. Hereinafter, the drive source compartment is referred to as an “engine compartment”. Note that “engine compartment” includes “engine” in its name, but a drive source such as a motor or a fuel cell may be installed in place of the engine.

ラジエータサポート２２で支持される冷却系部品１８の背後には、冷却ファン２０が設置されている。冷却ファン２０は、外気導入開口２４から導入される外気を吸引するためのファンである。この冷却ファン２０により強制的に生じる空気流れ、および、車両１０の走行に伴い生じる相対的な空気流れにより、外気が外気導入開口２４から駆動源設置空間１４内に導入される。そして、この導入された外気との間で、熱交換を行うことで冷却系部品１８（正確には、冷却系部品１８で取り扱う冷媒）の冷却が実現される。   A cooling fan 20 is installed behind the cooling system component 18 supported by the radiator support 22. The cooling fan 20 is a fan for sucking outside air introduced from the outside air introduction opening 24. The outside air is introduced into the drive source installation space 14 from the outside air introduction opening 24 by the air flow forcibly generated by the cooling fan 20 and the relative air flow generated when the vehicle 10 travels. The cooling system component 18 (more precisely, the refrigerant handled by the cooling system component 18) is cooled by exchanging heat with the introduced outside air.

本実施形態では、この外気導入開口２４から導入される外気の一部を、効率的にエンジンコンパートメントにも導き、エンジンコンパートメントの雰囲気温度の上昇の低減を図っている。そして、エンジンコンパートメントへの効率的な外気導入を可能とするために、外気導入開口２４周辺の構造を特殊なものとしている。これについて図２を用いて説明する。   In the present embodiment, a part of the outside air introduced from the outside air introduction opening 24 is efficiently guided to the engine compartment to reduce the increase in the ambient temperature of the engine compartment. In order to enable efficient introduction of outside air into the engine compartment, the structure around the outside air introduction opening 24 is special. This will be described with reference to FIG.

図２は、外気導入開口２４周辺の概略縦断面図である。既述したとおり、ラジエータ１８ｂや空調用コンデンサ１８ａといった冷却系部品１８は、ラジエータサポート２２で支持され、駆動源設置空間の前端近傍に配置されている。また、車体ボディ２８のうち、この冷却系部品１８に対向する位置には、外気を駆動源設置空間に導入するための外気導入開口２４が設けられている。   FIG. 2 is a schematic longitudinal sectional view around the outside air introduction opening 24. As described above, the cooling system components 18 such as the radiator 18b and the air conditioning condenser 18a are supported by the radiator support 22 and arranged near the front end of the drive source installation space. In addition, an outside air introduction opening 24 for introducing outside air into the drive source installation space is provided in a position of the vehicle body 28 facing the cooling system component 18.

車体ボディ２８の裏面とラジエータサポート２２の上側前端との間には、板状部材であるデフレクタ３０が設けられている。デフレクタ３０は、ラジエータサポート２２の上側前端に固定されており、車体ボディ２８の裏面近傍まで延びる板状部材である。このデフレクタ３０は、エンジンコンパートメント２６の熱気が、ラジエータサポート２２の前面側に回りこみ、冷却系部品１８の前方に到達するのを防止するために設けられている。また、このデフレクタ３０には、車両前後方向（図２における左右方向）に延びるスリット状の貫通孔（図示せず）が複数形成されている事がある。かかる貫通孔が形成されている場合、外気導入開口２４から流入した外気の一部は、このデフレクタ３０に形成された貫通孔を通じて、エンジンコンパートメント２６に流入する。   A deflector 30 that is a plate-like member is provided between the rear surface of the vehicle body 28 and the upper front end of the radiator support 22. The deflector 30 is a plate-like member that is fixed to the upper front end of the radiator support 22 and extends to the vicinity of the back surface of the vehicle body 28. The deflector 30 is provided to prevent hot air from the engine compartment 26 from flowing around the front surface of the radiator support 22 and reaching the front of the cooling system component 18. The deflector 30 may be formed with a plurality of slit-like through holes (not shown) extending in the vehicle front-rear direction (left-right direction in FIG. 2). When such a through hole is formed, a part of the outside air that has flowed from the outside air introduction opening 24 flows into the engine compartment 26 through the through hole formed in the deflector 30.

ここで、図２から明らかなとおり、本実施形態では、デフレクタ３０は、前方に向かうにつれて高くなるように、傾斜して設けられており、その前端（図２における左側端部）が、外気導入開口２４の上端より上方になるように設置されている。そのため、車体ボディ２８には、デフレクタ３０の前端より下側に突き出した突き出し部分２８ａが存在することになる。この車体ボディの突き出し部分２８ａが存在することにより、従来に比べて、効率的に外気をエンジンコンパートメント２６に導くことができる。   Here, as is apparent from FIG. 2, in this embodiment, the deflector 30 is provided to be inclined so as to become higher toward the front, and the front end (the left end in FIG. 2) is introduced to the outside air. It is installed so as to be above the upper end of the opening 24. Therefore, the vehicle body 28 has a protruding portion 28 a that protrudes downward from the front end of the deflector 30. Due to the presence of the protruding portion 28a of the vehicle body, the outside air can be efficiently guided to the engine compartment 26 as compared with the conventional case.

これについて、図３を用いて説明する。図３（ａ）は、図２におけるＡ部拡大図であり、図３（ｂ）は従来の外気導入構造の部分拡大図である。はじめに、従来の外気導入構造について簡単に説明する。従来の外気導入構造（以下「従来構造」という）においても、ラジエータサポート１２２の上側前端および車体ボディ１２８の裏面の間には板状部材であるデフレクタ１３０が設けられている。また、従来構造においても、デフレクタ１３０に車両前後方向に延びるスリット状の貫通孔を形成し、エンジンコンパートメント１２６への外気導入を図る場合がある。   This will be described with reference to FIG. 3A is an enlarged view of a portion A in FIG. 2, and FIG. 3B is a partially enlarged view of a conventional outside air introduction structure. First, a conventional outside air introduction structure will be briefly described. Also in a conventional outside air introduction structure (hereinafter referred to as “conventional structure”), a deflector 130 that is a plate-like member is provided between the upper front end of the radiator support 122 and the back surface of the vehicle body 128. Also in the conventional structure, there is a case where a slit-like through hole extending in the vehicle front-rear direction is formed in the deflector 130 to introduce outside air into the engine compartment 126.

しかしながら、従来構造において、デフレクタ１３０は、ラジエータサポート１２２の上側前端から、車体ボディの裏面のうち外気導入開口１２４の上端近傍に向かって延びている。換言すれば、デフレクタ１３０の前端と外気導入開口１２４の上端の高さは、ほぼ同じであり、デフレクタ１３０の前端より下側に延びる車体ボディの突き出し部分がなかった。   However, in the conventional structure, the deflector 130 extends from the upper front end of the radiator support 122 toward the vicinity of the upper end of the outside air introduction opening 124 on the rear surface of the vehicle body. In other words, the height of the front end of the deflector 130 and the upper end of the outside air introduction opening 124 are substantially the same, and there is no protruding part of the vehicle body body that extends downward from the front end of the deflector 130.

本実施形態と異なり、車体ボディの突き出し部分が存在しない従来構造では、外気導入開口１２４の車体ボディ１２８に沿って流れる外気の多くは、外気導入開口１２４の内部方向に分流されることなく、そのまま車体ボディ１２８に沿って流れ続ける。特に、車両の走行速度が低い場合や、デザイン上の都合で、外気導入開口１２４の面積が小さい場合などには、エンジンコンパートメント１２６に十分な流量の外気が流れ込まない場合が多かった。その結果、エンジンコンパートメント１２６の雰囲気温度の上昇を招き、駆動源等の部品に熱害が生じる場合があった。   Unlike the present embodiment, in the conventional structure in which the protruding portion of the vehicle body does not exist, much of the outside air flowing along the vehicle body 128 of the outside air introduction opening 124 is not diverted in the inside direction of the outside air introduction opening 124 and remains as it is. It continues to flow along the body body 128. In particular, when the running speed of the vehicle is low or due to design reasons, when the area of the outside air introduction opening 124 is small, outside air having a sufficient flow rate often does not flow into the engine compartment 126. As a result, the ambient temperature of the engine compartment 126 is increased, and heat damage may occur in components such as the drive source.

一方、本実施形態では、既述したとおり、デフレクタ３０の前端は、外気導入開口２４の上端より上方に位置しており、車体ボディ２８には、デフレクタ３０の前端より下方に突き出した突き出し部分２８ａが形成されている。この場合、車体ボディ２８に沿って流れる外気は、車体ボディの突き出し部部分２８ａにより分流され、外気導入開口２４に流入する外気流量が増加する。また、外気導入開口２４の上端近傍に流入した外気は、車体ボディの突き出し部分２８ａに沿った流れを形成し、デフレクタ３０に形成された貫通孔を通過しやすくなる。その結果、エンジンコンパートメント２６に流れこむ外気流量を従来構造に比して増加させることができる。   On the other hand, in this embodiment, as described above, the front end of the deflector 30 is located above the upper end of the outside air introduction opening 24, and the vehicle body 28 has a protruding portion 28 a that protrudes downward from the front end of the deflector 30. Is formed. In this case, the outside air flowing along the vehicle body 28 is diverted by the protruding portion 28a of the vehicle body, and the outside air flow rate flowing into the outside air introduction opening 24 increases. Further, the outside air that flows into the vicinity of the upper end of the outside air introduction opening 24 forms a flow along the protruding portion 28a of the vehicle body, and easily passes through the through hole formed in the deflector 30. As a result, the outside air flow rate flowing into the engine compartment 26 can be increased as compared with the conventional structure.

また、デフレクタ３０を傾斜して設けることにより、外気導入開口２４の面積を低減させることなく、突き出し部分２８ａを形成することができる。すなわち、デフレクタ３０を水平に設けた場合、突き出し部分２８ａを形成するためには、外気導入開口２４の上端位置をラジエータサポート２２より下方に延ばさざるを得ない。その結果、当該突き出し部分２８ａの突き出し量に応じた外気導入開口２４の面積低減を招くことになる。そして、この外気導入開口２４の面積低減は、当然ながら、駆動源設置空間に流入する外気流量の低減を招くことになる。一方、本実施形態のようにデフレクタ３０を傾斜して設けた場合には、傾斜量に応じてデフレクタ３０の前端が高くなるので、外気導入開口２４の上端を必要以上に下方に延ばさなくても突き出し部分２８ａが形成される。その結果、外気導入開口２４の面積の低減が防止され、駆動源設置空間に流入する外気量を増加させることができる。つまり、デフレクタ３０を傾斜設置することにより、デフレクタ３０を水平設置する場合に比して、より効率的に外気を駆動源設置空間に導入することができる。   Further, by providing the deflector 30 at an angle, the protruding portion 28a can be formed without reducing the area of the outside air introduction opening 24. That is, when the deflector 30 is provided horizontally, the upper end position of the outside air introduction opening 24 must be extended downward from the radiator support 22 in order to form the protruding portion 28a. As a result, the area of the outside air introduction opening 24 is reduced according to the protruding amount of the protruding portion 28a. The reduction in the area of the outside air introduction opening 24 naturally leads to a reduction in the outside air flow rate flowing into the drive source installation space. On the other hand, when the deflector 30 is provided with an inclination as in the present embodiment, the front end of the deflector 30 becomes higher according to the amount of inclination, so that the upper end of the outside air introduction opening 24 does not have to be extended downward more than necessary. A protruding portion 28a is formed. As a result, the area of the outside air introduction opening 24 is prevented from being reduced, and the amount of outside air flowing into the drive source installation space can be increased. That is, by installing the deflector 30 at an inclination, it is possible to introduce outside air into the drive source installation space more efficiently than when the deflector 30 is installed horizontally.

以上の説明から明らかなとおり、本実施形態では、デフレクタ３０の前端が外気導入開口２４の上端より高くなるようにして車体ボディの突き出し部２８ａを形成し、さらに、デフレクタ３０を外気の流れに略直交するように傾斜させることで、エンジンコンパートメント２６への外気導入をより促進させることができる。   As is apparent from the above description, in the present embodiment, the protruding portion 28a of the vehicle body is formed such that the front end of the deflector 30 is higher than the upper end of the outside air introduction opening 24, and the deflector 30 is substantially adapted to the flow of outside air. By inclining so as to be orthogonal, the introduction of outside air into the engine compartment 26 can be further promoted.

また、本実施形態では、外気を効率的にエンジンコンパートメント２６に導入できるため、外気導入開口２４の面積を従来に比して小さくしても、十分な流量の外気をエンジンコンパートメント２６へ送り込むことができる。つまり、本実施形態によれば、従来に比して、外気導入開口２４の面積を小さくすることができる。その結果、外気導入開口２４周辺のデザイン上の自由度を従来構造に比べて向上させることができる。   Further, in the present embodiment, since the outside air can be efficiently introduced into the engine compartment 26, a sufficient flow rate of outside air can be sent to the engine compartment 26 even if the outside air introduction opening 24 has a smaller area than the conventional one. it can. That is, according to the present embodiment, the area of the outside air introduction opening 24 can be reduced as compared with the conventional case. As a result, the degree of freedom in design around the outside air introduction opening 24 can be improved as compared with the conventional structure.

なお、車体ボディの突き出し部分２８ａの突き出し量は、外気導入開口２４の大きさや、エンジンコンパートメント２６の広さ（ひいては、エンジンコンパートメント２６の雰囲気温度上昇を抑えるのに必要な外気流量）などに応じて、適宜、変更可能であるが、通常の小型車であれば、数センチ程度の突き出し量があれば、十分な効果が得られる。   The protruding amount of the protruding portion 28a of the vehicle body depends on the size of the outside air introduction opening 24, the size of the engine compartment 26 (and hence the outside air flow rate necessary for suppressing the increase in the ambient temperature of the engine compartment 26), and the like. However, if it is a normal small vehicle, a sufficient effect can be obtained if there is a protrusion amount of about several centimeters.

次に他の実施形態について図４を用いて説明する。図４は、他の実施形態における外気導入構造１２の部分拡大図である。この外気導入構造１２でも、上記の実施形態と同様に、ラジエータサポート２２の上側前端から車体ボディ２８の裏面近傍まで延びるデフレクタ３０が設けられている。ただし、本実施形態のデフレクタ３０は、図２、図３（ａ）の図示例とは異なり、水平に設置されている。すなわち、本実施形態では、外気導入開口２４を、その上端がラジエータサポート２２の上側前端よりも低くなる位置および大きさとしている。そのため、ラジエータサポート２２の上側前端から水平に延びるデフレクタ３０の前端は、外気導入開口２４の上端より上方に位置することになる。つまり、車体ボディ２８には、デフレクタ３０の前端より下方に突き出した突き出し部分２８ａが存在することになる。   Next, another embodiment will be described with reference to FIG. FIG. 4 is a partially enlarged view of the outside air introduction structure 12 in another embodiment. Also in the outside air introduction structure 12, a deflector 30 extending from the upper front end of the radiator support 22 to the vicinity of the back surface of the vehicle body 28 is provided as in the above embodiment. However, the deflector 30 of this embodiment is installed horizontally unlike the example of illustration of FIG. 2, FIG. 3 (a). In other words, in the present embodiment, the outside air introduction opening 24 has a position and a size where the upper end is lower than the upper front end of the radiator support 22. Therefore, the front end of the deflector 30 extending horizontally from the upper front end of the radiator support 22 is positioned above the upper end of the outside air introduction opening 24. That is, the vehicle body 28 has a protruding portion 28 a that protrudes downward from the front end of the deflector 30.

この突き出し部分２８ａにより、車体ボディ２８に沿って流れる外気が分流され、外気導入開口２４に流入する外気流量が増加する。また、外気導入開口２４の上端近傍に流入した外気は、車体ボディの突き出し部分２８ａに沿った流れを形成し、デフレクタ３０に形成された貫通孔を通過しやすくなる。その結果、図２、図３（ａ）の図示例と同様に、エンジンコンパートメント２６に流れ込む外気流量を従来に比べて増加させることができる。   The protruding portion 28 a divides the outside air flowing along the vehicle body 28, and the outside air flow rate flowing into the outside air introduction opening 24 increases. Further, the outside air that flows into the vicinity of the upper end of the outside air introduction opening 24 forms a flow along the protruding portion 28a of the vehicle body, and easily passes through the through hole formed in the deflector 30. As a result, the flow rate of the outside air flowing into the engine compartment 26 can be increased as compared with the conventional example, as in the illustrated example of FIGS.

つまり、デフレクタ３０を水平に設置した場合であっても、当該デフレクタ３０の前端を外気導入開口２４の上端より上方に位置させて突き出し部分２８ａを形成することで、エンジンコンパートメント２６に流れ込む外気流量を従来に比べて増加させることができる。   That is, even when the deflector 30 is installed horizontally, the protruding portion 28a is formed by positioning the front end of the deflector 30 above the upper end of the outside air introduction opening 24, so that the flow rate of outside air flowing into the engine compartment 26 can be reduced. It can be increased compared to the conventional case.

本発明の実施形態である外気導入構造が設けられた車両の概略側面図である。1 is a schematic side view of a vehicle provided with an outside air introduction structure according to an embodiment of the present invention. 外気導入構造の概略縦断面図である。It is a schematic longitudinal cross-sectional view of an external air introduction structure. （ａ）は、図２におけるＡ部拡大図であり、（ｂ）は従来の外気導入構造の部分拡大図である。(A) is the A section enlarged view in FIG. 2, (b) is the elements on larger scale of the conventional external air introduction structure. 他の実施形態における外気導入構造の概略縦断面図である。It is a schematic longitudinal cross-sectional view of the external air introduction structure in other embodiment.

符号の説明Explanation of symbols

１０ 車両、１２ 外気導入構造、１４ 駆動源設置空間、１６ 駆動源、１８ 冷却系部品、２０ 冷却ファン、２２ ラジエータサポート、２４ 外気導入開口、２６ エンジンコンパートメント（駆動源用隔室）、２８ 車体ボディ、２８ａ 突き出し部分、３０ デフレクタ。   DESCRIPTION OF SYMBOLS 10 Vehicle, 12 Outside air introduction structure, 14 Drive source installation space, 16 Drive source, 18 Cooling system component, 20 Cooling fan, 22 Radiator support, 24 Outside air introduction opening, 26 Engine compartment (drive source compartment), 28 Body body 28a Protruding part, 30 deflector.

Claims (3)

車両内部に形成された駆動源設置空間内に外気を導入する外気導入構造であって、
前記駆動源設置空間の前面を構成する車体ボディに形成された開口であって、前記駆動源設置空間内に外気を導入する外気導入開口と、
少なくとも前面が開口された支持部材で支持され、前記外気導入開口に対向して前記駆動源設置空間内に設置される冷却系部品と、
前記支持部材の上側前端と前記車体ボディの裏面との間に掛け渡されることで前記駆動源設置空間を冷却系部品用隔室と駆動源用隔室とに仕切る板状部材であって、前記外気導入開口から導入された外気の一部を前記駆動源用隔室に導く貫通孔が形成された板状部材と、
を備え、
前記板状部材は、その前端が前記外気導入開口の上端より上方に位置するように設置されることを特徴とする外気導入構造。 An outside air introduction structure for introducing outside air into a drive source installation space formed inside a vehicle,
An opening formed in a vehicle body constituting a front surface of the drive source installation space, and an outside air introduction opening for introducing outside air into the drive source installation space;
A cooling system component that is supported by a support member having at least a front surface opened and is installed in the drive source installation space so as to face the outside air introduction opening;
A plate-like member that divides the drive source installation space into a cooling system component compartment and a drive source compartment by being spanned between the upper front end of the support member and the rear surface of the vehicle body body, A plate-like member formed with a through hole for guiding a part of the outside air introduced from the outside air introduction opening to the drive source compartment;
With
The outside air introduction structure, wherein the plate-like member is installed so that a front end thereof is positioned above an upper end of the outside air introduction opening. 請求項１に記載の外気導入構造であって、
前記板状部材を傾斜させて設置することで、前記板状部材の前端を前記外気導入開口の上端より上方に位置させることを特徴とする外気導入構造。 The outside air introduction structure according to claim 1,
An outside air introduction structure characterized in that the front end of the plate member is positioned above the upper end of the outside air introduction opening by inclining the plate member. 請求項１に記載の外気導入構造であって、
前記板状部材が水平に設置される場合、
前記外気導入開口は、その上端が前記支持部材の上側前端よりも下方に位置するような位置および大きさで形成されることを特徴とする外気導入構造。 The outside air introduction structure according to claim 1,
When the plate-like member is installed horizontally,
The outside air introduction opening is formed at a position and a size such that the upper end of the outside air introduction opening is located below the upper front end of the support member.
JP2007164111A 2007-06-21 2007-06-21 External air introduction structure Pending JP2009001161A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107380090A (en) * 2017-07-27 2017-11-24 北京汽车研究总院有限公司 A kind of air conditioning for automobiles deflector and automobile

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JPH1120483A (en) * 1997-07-04 1999-01-26 Mazda Motor Corp Outside air lead-in structure for vehicle
JP2005343244A (en) * 2004-06-01 2005-12-15 Nissan Motor Co Ltd Outside air introducing structure of car body front part
JP2007091062A (en) * 2005-09-29 2007-04-12 Denso Corp Front end structure for vehicle

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JPS51141117A (en) * 1975-05-29 1976-12-04 Nissan Motor Co Ltd Front structure of car body
JPS6477518A (en) * 1987-09-18 1989-03-23 Fuji Photo Film Co Ltd Method for laminating thermoplastic resin member
JPH1120483A (en) * 1997-07-04 1999-01-26 Mazda Motor Corp Outside air lead-in structure for vehicle
JP2005343244A (en) * 2004-06-01 2005-12-15 Nissan Motor Co Ltd Outside air introducing structure of car body front part
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CN107380090A (en) * 2017-07-27 2017-11-24 北京汽车研究总院有限公司 A kind of air conditioning for automobiles deflector and automobile

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