JP4586364B2 - Radiator cooling fan mounting structure - Google Patents

Radiator cooling fan mounting structure Download PDF

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JP4586364B2
JP4586364B2 JP2003434701A JP2003434701A JP4586364B2 JP 4586364 B2 JP4586364 B2 JP 4586364B2 JP 2003434701 A JP2003434701 A JP 2003434701A JP 2003434701 A JP2003434701 A JP 2003434701A JP 4586364 B2 JP4586364 B2 JP 4586364B2
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radiator
flat plate
cooling fan
shroud
plate portion
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JP2005186911A (en
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一志 村上
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Nissan Motor Co Ltd
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Nissan Motor Co Ltd
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本発明は、エンジン冷却液を冷却するためのラジエータに送風する冷却ファンの取付構造に関するものであり、特にラジエータの裏側をシュラウドで覆う構造のものに好適なものである。   The present invention relates to a mounting structure of a cooling fan that blows air to a radiator for cooling engine coolant, and is particularly suitable for a structure that covers the back side of a radiator with a shroud.

このようなラジエータ冷却ファン取付構造としては、例えばファンモータを車体側部材又はラジエータに取付けるためのステー部材と、ファンモータ自体と、ラジエータの裏側（車両後方側）を覆うシュラウドとを一体にアッセンブリ化し、前記ステー部材を、ゴム製のグロメットを介して、車体側部材又はラジエータに取付けるものがある（例えば特許文献１参照）。これにより、ファンモータから車体に伝達される騒音や振動（両者を併せて音振という）が低減し、静粛性が向上する。
実開平５−１８２０号公報 As such a radiator cooling fan mounting structure, for example, a stay member for mounting the fan motor to the vehicle body side member or the radiator, the fan motor itself, and a shroud covering the back side of the radiator (vehicle rear side) are integrally assembled. In some cases, the stay member is attached to a vehicle body side member or a radiator via a rubber grommet (see, for example, Patent Document 1). As a result, noise and vibration transmitted from the fan motor to the vehicle body (both referred to as sound vibration) are reduced, and quietness is improved.
Japanese Utility Model Publication No. 5-1820

しかしながら、前記従来のラジエータ冷却ファン取付構造では、ステー部材とシュラウドとが剛結合されているので、ファンモータからシュラウドに伝達される音振は低減されず、特に放射特性のよくないシュラウド平板部（ラジエータ裏面を覆う部分）からの放射音が大きいという問題がある。
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、ラジエータ裏面を覆うシュラウド平板部からの放射音を低減することが可能なラジエータ冷却ファン取付構造を提供することを目的とするものである。 However, in the conventional radiator cooling fan mounting structure, since the stay member and the shroud are rigidly coupled, the sound vibration transmitted from the fan motor to the shroud is not reduced, and the shroud flat plate portion having particularly poor radiation characteristics ( There is a problem that the radiated sound from the part covering the radiator back surface is loud.
The present invention has been made paying attention to the above problems, and an object thereof is to provide a radiator cooling fan mounting structure capable of reducing radiated sound from the shroud flat plate portion covering the back surface of the radiator. To do.

上記課題を解決するために、本発明のラジエータ冷却ファン取付構造は、ファンモータを車体側部材又はラジエータに取付けるためのステー部材と、ラジエータを覆うシュラウドの平板部との間に弾性体を介装したことを特徴とするものである。   In order to solve the above-described problems, the radiator cooling fan mounting structure of the present invention is configured such that an elastic body is interposed between a stay member for mounting a fan motor to a vehicle body side member or a radiator and a flat plate portion of a shroud covering the radiator. It is characterized by that.

而して、本発明のラジエータ冷却ファン取付構造によれば、ファンモータを車体側部材又はラジエータに取付けるためのステー部材と、ラジエータを覆うシュラウドの平板部との間に弾性体を介装したことにより、ファンモータからステー部材を通してシュラウドに伝達される音振が低減され、これによりラジエータの裏面を覆う平板部からの放射音を低減することが可能となる。   Thus, according to the radiator cooling fan mounting structure of the present invention, the elastic body is interposed between the stay member for mounting the fan motor on the vehicle body side member or the radiator and the flat plate portion of the shroud covering the radiator. Thus, the sound vibration transmitted from the fan motor to the shroud through the stay member is reduced, and thereby it is possible to reduce the radiated sound from the flat plate portion covering the back surface of the radiator.

次に、本発明のラジエータ冷却ファン取付構造の一実施形態について図面を参照しつつ説明する。
図１は、フード（ボンネットともいう）が取付けられていない状態の車両前方端部の概略図であり、エンジンルームの車両前方端部にファーストクロスメンバ２１が横架けされ、その上にラジエータ１が立設されている。このラジエータ１の裏側、つまり車両後方側はシュラウド２によって覆われている。シュラウド２は、冷却ファンによる送風効率を向上するためのものである。 Next, an embodiment of a radiator cooling fan mounting structure of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic view of a front end portion of a vehicle in a state where a hood (also referred to as a bonnet) is not attached. A first cross member 21 is laid across a front end portion of a vehicle in an engine room, and a radiator 1 is mounted thereon. It is erected. The back side of the radiator 1, that is, the vehicle rear side, is covered with a shroud 2. The shroud 2 is for improving the ventilation efficiency by the cooling fan.

図２には、本実施形態のラジエータ冷却ファン取付構造の背面を、図３には、その縦断面を示す。冷却ファンの駆動源であるファンモータ３の回転軸にはファンブレード（羽）４が取付けられている。また、ファンモータ３は、ボルト等の締結部材により、ステー部材４に固定されている。そして、このステー部材４は、ゴム製グロメット６を介し、ボルト２３によって、ラジエータ１に固定されている。   FIG. 2 shows a rear surface of the radiator cooling fan mounting structure of the present embodiment, and FIG. 3 shows a longitudinal section thereof. A fan blade (blade) 4 is attached to a rotating shaft of a fan motor 3 which is a driving source of the cooling fan. The fan motor 3 is fixed to the stay member 4 by a fastening member such as a bolt. The stay member 4 is fixed to the radiator 1 by a bolt 23 via a rubber grommet 6.

本実施形態では、従来、一体であったシュラウド２を、前記ファンブレード４の周囲を覆うリング部７と、ラジエータ１の裏面を覆う平板部８とに分割した。このうち、リング部７は、前記ステー部材４に固着する。一方の平板部８は、ゴム製グロメット９を介し、ボルト２４によって、ラジエータ１に固定する。そして、リング部７と平板部８との間にリング状のリップ１０を介装して両者を接続する。このリップ１０は、ファンブレード４にいよる冷却風の漏れを防止するためのものであり、ゴムや樹脂等の弾性体（柔らかいもの）で構成されている。   In the present embodiment, the shroud 2 that has conventionally been integrated is divided into a ring portion 7 that covers the periphery of the fan blade 4 and a flat plate portion 8 that covers the back surface of the radiator 1. Among these, the ring portion 7 is fixed to the stay member 4. One flat plate portion 8 is fixed to the radiator 1 with a bolt 24 through a rubber grommet 9. Then, a ring-shaped lip 10 is interposed between the ring portion 7 and the flat plate portion 8 to connect them. The lip 10 is for preventing leakage of cooling air from the fan blade 4 and is made of an elastic body (soft material) such as rubber or resin.

前記シュラウド２を分割した平板部８に対し、リング部７は、形状がリング形状であること、及び表面積が小さいために放射特性がよい、つまり放射音がしにくい。一方の平板部８は、形状が平板状であること、及び表面積が大きいために、放射特性がよくない、つまり放射音がし易い。本実施形態では、放射特性のよくない平板部８と、放射特性のよいリング部７との間に弾性体からなるリップ１０を介装したため、ファンモータ３の音振はステー部材５からリング部７には伝達されるが、平板部８には伝達されにくく、従って平板部８からの放射音が大幅に低減される。   In contrast to the flat plate portion 8 into which the shroud 2 is divided, the ring portion 7 has a ring shape and a small surface area, and thus has good radiation characteristics, that is, hardly emits radiated sound. One flat plate portion 8 has a flat plate shape and a large surface area, so that the radiation characteristic is not good, that is, it is easy to emit a radiated sound. In the present embodiment, since the lip 10 made of an elastic body is interposed between the flat plate portion 8 having poor radiation characteristics and the ring portion 7 having good radiation characteristics, the sound vibration of the fan motor 3 is transmitted from the stay member 5 to the ring portion. 7, but not easily transmitted to the flat plate portion 8, so that the radiated sound from the flat plate portion 8 is greatly reduced.

図４、図５は、前記従来のラジエータ冷却ファン取付構造の一例を示すものであり、図４は背面を、図５は縦断面を示す。便宜上、符号は、本実施形態と同じものを用いるが、シュラウド２のリング部７と平板部８とは一体であり、ファンモータ３やファンブレード４が取付けられたステー部材５にシュラウド２の平板部８が固着されてアッセンブリ化され、そのステー部材５を、ゴム製グロメット６を介して、ボルト２３によりラジエータ１に固定している。そのため、ファンモータ３からの音振はラジエータ１には伝達されにくいが、シュラウド２、特に平板部８には、ステー部材５を介して、直接的に伝達されてしまう。   4 and 5 show an example of the conventional radiator cooling fan mounting structure. FIG. 4 is a rear view, and FIG. 5 is a longitudinal section. For convenience, the same reference numerals are used as in this embodiment, but the ring portion 7 and the flat plate portion 8 of the shroud 2 are integrated, and the flat plate of the shroud 2 is attached to the stay member 5 to which the fan motor 3 and the fan blade 4 are attached. The portion 8 is fixed and assembled, and the stay member 5 is fixed to the radiator 1 with a bolt 23 via a rubber grommet 6. Therefore, sound vibration from the fan motor 3 is difficult to be transmitted to the radiator 1, but is directly transmitted to the shroud 2, particularly the flat plate portion 8 via the stay member 5.

このファンモータ３から伝達された平板部８からの放射音は、従来、レシプロエンジンの運転音にマスキングされて、問題となるレベルになかった。しかしながら、近年のエンジンの静粛化に伴って、或いはより静粛なハイブリッド車両や電気自動車において問題視されるようになった。本実施形態のラジエータ冷却ファン取付構造によれば、この種の車両においても、平板部８からの放射音を問題ないレベルに抑えることができる。   Conventionally, the radiated sound from the flat plate portion 8 transmitted from the fan motor 3 is masked by the operation sound of the reciprocating engine and has not reached a problem level. However, as the engine has become quieter in recent years, it has become a problem in quieter hybrid vehicles and electric vehicles. According to the radiator cooling fan mounting structure of the present embodiment, even in this type of vehicle, the radiated sound from the flat plate portion 8 can be suppressed to a problem-free level.

また、本実施形態では、シュラウド２をリング部７と平板部８とに分割し、リング部７は、ファンモータ３、ファンブレード４と共にステー部材５に固着したので、リング部７内周とファンブレード４の外形との隙間を確実に且つ最小に確保することができる。ファンブレード４による送風効率を向上するためには、リング部７の内周とファンブレード４の外形との隙間を可及的に小さくするのがよい。しかしながら、例えば一体もののシュラウド２全体とステー部材５とを弾性的に接続、即ち互いに相対変位可能に接続したのでは、リング部７の内周とファンブレード４の外形との隙間が変動し、狭すぎると干渉してしまう。この干渉を回避するためには、リング部７の内周とファンブレード４の外形との隙間を大きくする必要が生じ、その結果、送風効率が低下してしまう。本実施形態では、前述のようにリング部７内周とファンブレード４の外形との隙間を確実に且つ最小に確保することができるので、冷却ファンの送風効率を向上することができる。   In the present embodiment, the shroud 2 is divided into the ring portion 7 and the flat plate portion 8, and the ring portion 7 is fixed to the stay member 5 together with the fan motor 3 and the fan blade 4. A gap with the outer shape of the blade 4 can be reliably and minimized. In order to improve the air blowing efficiency by the fan blade 4, the gap between the inner periphery of the ring portion 7 and the outer shape of the fan blade 4 should be made as small as possible. However, for example, when the entire shroud 2 and the stay member 5 are connected elastically, that is, connected to each other so as to be relatively displaceable, the gap between the inner periphery of the ring portion 7 and the outer shape of the fan blade 4 fluctuates. If it is too much, it will interfere. In order to avoid this interference, it is necessary to increase the gap between the inner periphery of the ring portion 7 and the outer shape of the fan blade 4, and as a result, the air blowing efficiency is lowered. In the present embodiment, as described above, the gap between the inner periphery of the ring portion 7 and the outer shape of the fan blade 4 can be ensured and minimized, so that the blowing efficiency of the cooling fan can be improved.

また、分割されたシュラウド２の平板部８を、ゴム製グロメット９を介して、ラジエータ１に固定したため、ラジエータ１側、即ち車体からの音振も平板部８に伝達されにくく、その意味でも平板部８の放射音を低減することができる。
なお、前記ステー部材５は、ラジエータ１に直接取付けられなくとも、車体側部材の何処かに取付けられればよい。 Further, since the divided flat plate portion 8 of the shroud 2 is fixed to the radiator 1 through the rubber grommets 9, sound vibration from the radiator 1, that is, from the vehicle body is not easily transmitted to the flat plate portion 8. The radiated sound of the part 8 can be reduced.
The stay member 5 may be attached anywhere on the vehicle body side member, even if it is not directly attached to the radiator 1.

車両のラジエータ部分の概略を示す斜視図である。It is a perspective view which shows the outline of the radiator part of a vehicle. 本発明のラジエータ冷却ファン取付構造の一実施形態を示す斜視図である。It is a perspective view which shows one Embodiment of the radiator cooling fan attachment structure of this invention. 図２のラジエータ冷却ファン取付構造の縦断面図である。It is a longitudinal cross-sectional view of the radiator cooling fan mounting structure of FIG. 従来のラジエータ冷却ファン取付構造の一例を示す斜視図である。It is a perspective view which shows an example of the conventional radiator cooling fan attachment structure. 図４のラジエータ冷却ファン取付構造の縦断面図である。It is a longitudinal cross-sectional view of the radiator cooling fan mounting structure of FIG.

符号の説明Explanation of symbols

１はラジエータ
２はシュラウド
３はモータファン
４はファンブレード
５はステー部材
６はゴム製グロメット
７はリング部
８は平板部
９はゴム製グロメット
１０はリップ（弾性体） 1 is radiator 2 is shroud 3 is motor fan 4 is fan blade 5 is stay member 6 is rubber grommet 7 is ring part 8 is flat plate part 9 is rubber grommet 10 is lip (elastic body)

Claims (1)

ファンモータを車体側部材又はラジエータに取付けるためのステー部材と、ラジエータを覆うシュラウドとを備えたラジエータの冷却ファン取付構造であって、前記シュラウドを、ファンブレードの周辺のリング部とラジエータを覆う平板部とに分割し、そのリング部と前記ステー部材とを固着し、前記ステー部材を、ゴム製グロメットを介して車体側部材又はラジエータに固定し、前記リング部と平板部との間に弾性体を介装して両者を接続し、前記平板部を、ゴム製グロメットを介してラジエータに固定すると共に、前記リング部の表面積を前記平板部の表面積より小さくしたことを特徴とするラジエータ冷却ファン取付構造。 A radiator cooling fan mounting structure comprising a stay member for mounting a fan motor to a vehicle body side member or a radiator and a shroud covering the radiator, the shroud being a flat plate covering a ring portion around the fan blade and the radiator The ring portion and the stay member are fixed to each other, the stay member is fixed to a vehicle body side member or a radiator via a rubber grommet, and an elastic body is provided between the ring portion and the flat plate portion. A radiator cooling fan mounting , wherein the flat plate portion is fixed to the radiator via a rubber grommet, and the surface area of the ring portion is smaller than the surface area of the flat plate portion. Construction.
JP2003434701A 2003-12-26 2003-12-26 Radiator cooling fan mounting structure Expired - Fee Related JP4586364B2 (en)

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Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008115461A2 (en) 2007-03-16 2008-09-25 Polaris Industries Inc. Vehicle
JP2013104310A (en) * 2011-11-10 2013-05-30 Kobelco Contstruction Machinery Ltd Cooling device for construction machine
US8783400B2 (en) 2012-06-06 2014-07-22 Honda Motor Co., Ltd. Fan cover structure for a radiator assembly
CN104703830B (en) * 2012-09-14 2017-05-03 日产自动车株式会社 Vibration-proof structure of front-end module
JP5904142B2 (en) * 2013-02-28 2016-04-13 井関農機株式会社 Combine
JP6286338B2 (en) * 2014-09-30 2018-02-28 株式会社クボタ Working machine
US9752302B2 (en) 2014-09-30 2017-09-05 Kubota Corporation Working machine
US11173808B2 (en) 2016-12-22 2021-11-16 Polaris Industies Inc. Vehicle

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JPH051820U (en) * 1991-06-26 1993-01-14 スズキ株式会社 Mounting structure for vehicle cooling fan
JPH112127A (en) * 1997-06-11 1999-01-06 Aisin Chem Co Ltd Cooling fan shroud device
JP2003254062A (en) * 2002-03-06 2003-09-10 Yanmar Co Ltd Cooling device of engine

Patent Citations (4)

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Publication number Priority date Publication date Assignee Title
JPH02122119U (en) * 1989-03-20 1990-10-05
JPH051820U (en) * 1991-06-26 1993-01-14 スズキ株式会社 Mounting structure for vehicle cooling fan
JPH112127A (en) * 1997-06-11 1999-01-06 Aisin Chem Co Ltd Cooling fan shroud device
JP2003254062A (en) * 2002-03-06 2003-09-10 Yanmar Co Ltd Cooling device of engine

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