JP2016114005A - Attachment structure of fan cover - Google Patents

Attachment structure of fan cover Download PDF

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JP2016114005A
JP2016114005A JP2014254987A JP2014254987A JP2016114005A JP 2016114005 A JP2016114005 A JP 2016114005A JP 2014254987 A JP2014254987 A JP 2014254987A JP 2014254987 A JP2014254987 A JP 2014254987A JP 2016114005 A JP2016114005 A JP 2016114005A
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Prior art keywords
fan
fan cover
cover
ring
shroud
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JP6447088B2 (en
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孝夫 石橋
Takao Ishibashi
孝夫 石橋
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Isuzu Motors Ltd
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Isuzu Motors Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide an attachment structure of a fan cover which enables a fan ring to securely hold a fan cover and thereby prevents lifting of the fan cover.SOLUTION: A fan cover 14 includes one end side attached to a fan shroud 11 and the other end side attached to a fan ring 13 fixed to an engine E and enclosing a fan 12 and covers a gap between the fan shroud 11 and the fan ring 13. An attachment structure 20 of the fan cover 14 includes: a through hole 22 formed in the fan cover 14; and a pin member 21 which is provided protruding from the fan ring 13 to the engine E side, inserted into the through hole 22, and presses the fan cover 14 to the fan shroud 11 side with at least a part protruding from the through hole 22.SELECTED DRAWING: Figure 2

Description

本発明は、ファンカバーの取付構造に関し、特に、ラジエータに固定されたファンシュラウドと、エンジンに固定されたファンリングとの隙間を覆うファンカバーの取付構造に関する。   The present invention relates to a fan cover mounting structure, and more particularly to a fan cover mounting structure that covers a gap between a fan shroud fixed to a radiator and a fan ring fixed to an engine.

従来、この種のファンカバー取付構造として、例えば、特許文献１には、ファンラバーのエンジン側端部をファンリングの凹部に嵌合させると共に、ファンカバーのラジエータ側端部をファンシュラウドにクリップ等で固定した構造が開示されている。   Conventionally, as this type of fan cover mounting structure, for example, in Patent Document 1, the engine side end of the fan rubber is fitted into the recess of the fan ring, and the radiator side end of the fan cover is clipped to the fan shroud. The structure fixed by is disclosed.

実公平６−４５６２３号公報Japanese Utility Model Publication No. 6-45623

ところで、特許文献１記載の構造では、ファンカバーのエンジン側端部をファンリングの凹部に嵌合させているのみである。このため、ファンリングを介してファンカバーに伝達されるエンジンの荷重や振動に対して、これらファンカバーとファンリングとの嵌合力が耐え切れなくなると、ファンカバーがファンリングから外れて浮き上がるか、或いはファンカバーが脱落する可能性がある。   By the way, in the structure of patent document 1, the engine side edge part of a fan cover is only fitted to the recessed part of a fan ring. For this reason, if the fitting force between the fan cover and the fan ring cannot withstand the engine load or vibration transmitted to the fan cover via the fan ring, the fan cover may come off the fan ring and float up. Or the fan cover may fall off.

開示の取付構造は、ファンカバーをファンリングに確実に保持させることで、ファンカバーの浮き上がりや脱落を効果的に防止することを目的とする。   The disclosed mounting structure is intended to effectively prevent the fan cover from being lifted or dropped by securely holding the fan cover on the fan ring.

開示の取付構造は、一端側がラジエータに固定されたファンシュラウドに取り付けられると共に、他端側がエンジンに固定されてファンを囲むファンリングに取り付けられて、前記ファンシュラウドと前記ファンリングとの間の隙間を覆うファンカバーの取付構造であって、前記ファンカバーに形成された貫通孔と、前記ファンリングから前記エンジン側に突出して設けられると共に、前記貫通孔に挿通されて、当該貫通孔よりも突出された少なくとも一部で前記ファンカバーを前記ファンシュラウド側に押圧するピン部材ピン部材と、を備える。   In the disclosed mounting structure, one end is attached to a fan shroud fixed to a radiator, and the other end is fixed to an engine and attached to a fan ring surrounding the fan, and a gap between the fan shroud and the fan ring A fan cover mounting structure that covers a through hole formed in the fan cover and protruding from the fan ring toward the engine side, and is inserted through the through hole and protrudes beyond the through hole. A pin member pin member that presses the fan cover toward the fan shroud side at least in part.

開示の取付構造によれば、ファンカバーをファンリングに確実に保持させることで、ファンカバーの浮き上がりや脱落を効果的に防止することができる。   According to the disclosed mounting structure, it is possible to effectively prevent the fan cover from being lifted or dropped by securely holding the fan cover on the fan ring.

（Ａ）は本実施形態に係るファンカバーの取付構造が適用されたファンシュラウド構造を示す模式的な背面図であり、（Ｂ）は（Ａ）のＡ−Ａ線断面図である。(A) is a typical rear view showing a fan shroud structure to which the fan cover mounting structure according to the present embodiment is applied, and (B) is a cross-sectional view taken along line AA of (A). （Ａ）は本実施形態に係るファンカバーの取付構造を示す模式的な斜視図であり、（Ｂ）は本実施形態に係るファンカバーの取付構造を示す模式的な部分断面図である。(A) is a typical perspective view which shows the attachment structure of the fan cover concerning this embodiment, (B) is a typical fragmentary sectional view which shows the attachment structure of the fan cover concerning this embodiment. 他の実施形態に係るファンカバーの取付構造を示す模式的な背面図である。It is a typical rear view which shows the attachment structure of the fan cover which concerns on other embodiment. 他の実施形態に係るファンカバーの取付構造を示す模式的な部分断面図である。It is a typical fragmentary sectional view which shows the attachment structure of the fan cover which concerns on other embodiment.

以下、添付図面に基づいて、本発明の一実施形態に係るファンカバーの取付構造を説明する。同一の部品には同一の符号を付してあり、それらの名称及び機能も同じである。したがって、それらについての詳細な説明は繰返さない。   Hereinafter, a fan cover mounting structure according to an embodiment of the present invention will be described with reference to the accompanying drawings. The same parts are denoted by the same reference numerals, and their names and functions are also the same. Therefore, detailed description thereof will not be repeated.

図１は、本実施形態に係るファンカバーの取付構造が適用されファンシュラウド構造１０を示している。ファンシュラウド構造１０は、ファンシュラウド１１と、ファンシュラウド１１とエンジンＥ（図１（Ｂ）にのみ示す）との間に配置されたファン１２と、エンジンＥに固定されてファン１２を囲むファンリング１３と、これらファンシュラウド１１とファンリング１３との間を覆うファンカバー１４とを備えている。   FIG. 1 shows a fan shroud structure 10 to which a fan cover mounting structure according to this embodiment is applied. The fan shroud structure 10 includes a fan shroud 11, a fan 12 disposed between the fan shroud 11 and the engine E (shown only in FIG. 1B), and a fan ring fixed to the engine E and surrounding the fan 12 13 and a fan cover 14 that covers the space between the fan shroud 11 and the fan ring 13.

ファンシュラウド１１は、略平板状に形成されており、エンジンＥと対向する図示しないラジエータの背面にボルト等で固定されている。また、ファンシュラウド１１には、ファン１２の外径よりも内径の大きい開口部１１Ａが形成されている。開口部１１Ａは、略円形状に形成されており、気体をファン１２に導くための通気空間１５（図１（Ｂ）にのみ示す）を区画形成する。   The fan shroud 11 is formed in a substantially flat plate shape, and is fixed to the back surface of a radiator (not shown) facing the engine E with a bolt or the like. Further, the fan shroud 11 is formed with an opening 11 </ b> A having an inner diameter larger than the outer diameter of the fan 12. The opening 11A is formed in a substantially circular shape, and defines a ventilation space 15 (shown only in FIG. 1B) for guiding gas to the fan 12.

ファン１２は、その回転軸心がファンリング１３の中心軸（軸心）と一致するように配置されて、ファンリング１３の内部に収容されている。ファン１２は、例えば、エンジンＥの動力によって回転駆動される。   The fan 12 is disposed so that its rotational axis coincides with the central axis (axial center) of the fan ring 13, and is accommodated inside the fan ring 13. The fan 12 is rotationally driven by the power of the engine E, for example.

ファンリング１３は、略円筒状に形成されており、エンジンＥに図示しないボルト等で固定されている。また、ファンリング１３の外周面には、ファンシュラウド１１側に位置する第１環状フランジ部１３Ａ、エンジンＥ側に位置する第２環状フランジ部１３Ｂ、これら第１及び第２環状フランジ部１３Ａ，Ｂの間に位置する中間環状フランジ部１３Ｃがそれぞれ形成されている（何れも図１（Ｂ）にのみ示す）。さらに、ファンリング１３には、詳細を後述するファンカバーの取付構造２０の一部を構成する左右一対のピン部材２１（図１（Ａ）にのみ示す）が設けられている。   The fan ring 13 is formed in a substantially cylindrical shape, and is fixed to the engine E with a bolt or the like (not shown). Further, on the outer peripheral surface of the fan ring 13, a first annular flange portion 13A located on the fan shroud 11 side, a second annular flange portion 13B located on the engine E side, the first and second annular flange portions 13A, B An intermediate annular flange portion 13 </ b> C located between the two is formed (both are shown only in FIG. 1B). Further, the fan ring 13 is provided with a pair of left and right pin members 21 (shown only in FIG. 1A) that constitute a part of a fan cover mounting structure 20 whose details will be described later.

ファンカバー１４は、例えば樹脂材料等の弾性部材で略円筒状に形成されており、ファンシュラウド１１とファンリング１３との隙間を覆う。このため、ファンカバー１４は、一端側の周縁部をファンシュラウド１１の環状凹部に嵌合固定されると共に、他端側の周縁部をファンリング１３の環状凹部に嵌合固定されている（以下、説明の便宜のため、ファンリング１３とファンカバー１４との嵌合部分を第１取付部１７と称する）。   The fan cover 14 is formed in a substantially cylindrical shape by an elastic member such as a resin material, and covers the gap between the fan shroud 11 and the fan ring 13. For this reason, the fan cover 14 is fitted and fixed with the peripheral edge portion on one end side into the annular recess portion of the fan shroud 11, and the peripheral edge portion on the other end side is fitted and fixed in the annular recess portion of the fan ring 13 (hereinafter referred to as the fan cover 14). For convenience of explanation, a fitting portion between the fan ring 13 and the fan cover 14 is referred to as a first mounting portion 17).

次に、図２（Ａ），（Ｂ）に基づいて、本実施形態に係るファンカバーの取付構造２０の詳細について説明する。   Next, details of the fan cover mounting structure 20 according to the present embodiment will be described with reference to FIGS.

一対のピン部材２１は、例えば、金属材料等で略円柱状に形成されると共に、その基端部をファン１２（図１参照）よりも下方に位置するファンリング１３の第１環状フランジ部１３Ａ裏面に溶接等によって固定されている。また、ピン部材２１は、中間環状フランジ部１３Ｃの図示しない切欠に挿通されると共に、その先端側を第２環状フランジ部１３Ｂよりも外側（エンジンＥ側）に向けて斜め下方に突出して設けられている。さらに、ピン部材２１は、その先端側をファンカバー１４に形成された一対の長孔楕円状の貫通孔２２にそれぞれ挿通されると共に、その突出側の少なくとも一部でファンカバー１４の側面（又は、貫通孔２２の開口縁周囲）をファンシュラウド１１側に押圧して、ファンカバー１４を弾性変形させることで、ファンカバー１４をファンリング１３に保持している。   The pair of pin members 21 are formed, for example, in a substantially cylindrical shape using a metal material or the like, and the first annular flange portion 13A of the fan ring 13 whose base end portion is located below the fan 12 (see FIG. 1). It is fixed to the back by welding or the like. Further, the pin member 21 is inserted through a not-shown notch of the intermediate annular flange portion 13C, and the tip end side thereof is provided to project obliquely downward toward the outer side (engine E side) than the second annular flange portion 13B. ing. Further, the pin member 21 is inserted through a pair of oblong through-holes 22 formed in the fan cover 14 at the tip side, and at least a part of the protruding side of the side surface (or the fan cover 14). The fan cover 14 is held by the fan ring 13 by pressing the periphery of the opening edge of the through hole 22 toward the fan shroud 11 and elastically deforming the fan cover 14.

すなわち、ファンカバー１４をファンリング１３に対して、第１取付部１７のみならずピン部材２１を介して保持することで、第１取付部１７の嵌合力がファンリング１３を介して伝達されるエンジンＥの荷重や振動に耐えきれなくなった場合においても、ピン部材２１によってファンカバー１４をファンリング１３に確実に保持できるようになっている。これにより、ファンカバー１４の浮き上がりや脱落を確実に防止することが可能になる。   That is, by holding the fan cover 14 with respect to the fan ring 13 via the pin member 21 as well as the first attachment portion 17, the fitting force of the first attachment portion 17 is transmitted via the fan ring 13. Even when the engine E cannot withstand the load or vibration, the pin cover 21 can securely hold the fan cover 14 on the fan ring 13. Thereby, it is possible to reliably prevent the fan cover 14 from being lifted or dropped.

なお、本発明は、上述の実施形態に限定されるものではなく、本発明の趣旨を逸脱しない範囲で、適宜変形して実施することが可能である。   In addition, this invention is not limited to the above-mentioned embodiment, In the range which does not deviate from the meaning of this invention, it can change suitably and can implement.

例えば、一対のピン部材２１は、ファン１２よりも下方のファンリング１３に設けられるものとして説明したが、図３に示すように、一対のピン部材２１をファン１２よりも上方のファンリング１３にさらに設けて構成してもよい。この場合は、ファンカバー１４の脱落をより確実に防止することが可能になる。また、図４に示すように、ファンカバー１４がピン部材２１から抜け落ちることを防止するために、ピン部材２１の突出端側に貫通孔２２の内径よりも大径に形成された拡径部２１Ａを設けてもよい。   For example, the pair of pin members 21 are described as being provided on the fan ring 13 below the fan 12, but the pair of pin members 21 are disposed on the fan ring 13 above the fan 12 as shown in FIG. 3. Further, it may be configured. In this case, it is possible to more reliably prevent the fan cover 14 from falling off. Further, as shown in FIG. 4, in order to prevent the fan cover 14 from falling off from the pin member 21, the enlarged diameter portion 21 </ b> A formed on the protruding end side of the pin member 21 is larger in diameter than the inner diameter of the through hole 22. May be provided.

１０ ファンシュラウド構造
１１ ファンシュラウド
１２ ファン
１３ ファンリング
１４ ファンカバー
２０ ファンカバーの取付構造
２１ ピン部材
２２ 貫通孔 DESCRIPTION OF SYMBOLS 10 Fan shroud structure 11 Fan shroud 12 Fan 13 Fan ring 14 Fan cover 20 Fan cover mounting structure 21 Pin member 22 Through-hole

Claims (4)

一端側がラジエータに固定されたファンシュラウドに取り付けられると共に、他端側がエンジンに固定されてファンを囲むファンリングに取り付けられて、前記ファンシュラウドと前記ファンリングとの間の隙間を覆うファンカバーの取付構造であって、
前記ファンカバーに形成された貫通孔と、
前記ファンリングから前記エンジン側に突出して設けられると共に、前記貫通孔に挿通されて、当該貫通孔よりも突出された少なくとも一部で前記ファンカバーを前記ファンシュラウド側に押圧するピン部材と、を備える
ファンカバーの取付構造。 Mounting of a fan cover that is attached to a fan shroud that is fixed to the radiator at one end side, and is attached to a fan ring that is fixed to the engine and that surrounds the fan at the other end side to cover a gap between the fan shroud and the fan ring Structure,
A through hole formed in the fan cover;
A pin member that protrudes from the fan ring to the engine side and is inserted through the through hole and presses the fan cover toward the fan shroud side at least partially protruding from the through hole. Equipped with a fan cover mounting structure. 前記ピン部材を前記ファンよりも上方に位置する前記ファンリング及び、前記ファンよりも下方に位置する前記ファンリングの少なくとも一方に設けた
請求項１に記載のファンカバーの取付構造。 The fan cover mounting structure according to claim 1, wherein the pin member is provided on at least one of the fan ring positioned above the fan and the fan ring positioned below the fan. 前記ピン部材の軸心を前記ファンリングの中心軸に対して傾斜させた
請求項１又は２に記載のファンカバーの取付構造。 The fan cover mounting structure according to claim 1, wherein an axis of the pin member is inclined with respect to a central axis of the fan ring. 前記ピン部材の突出側端に前記貫通孔の内径よりも大径の拡径部を設けた
請求項１から３の何れか一項に記載のファンカバーの取付構造。 The fan cover mounting structure according to any one of claims 1 to 3, wherein an enlarged-diameter portion larger in diameter than the inner diameter of the through hole is provided at a protruding side end of the pin member.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPWO2020067123A1 (en) * 2018-09-26 2021-11-04 東京ラヂエーター製造株式会社 Fan guide unit

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JPH0645623Y2 (en) * 1989-03-15 1994-11-24 三菱自動車工業株式会社 Fan loudspeaker mounting structure
JPH084530A (en) * 1994-06-23 1996-01-09 Aisin Chem Co Ltd Cooling fan shroud device
JPH112127A (en) * 1997-06-11 1999-01-06 Aisin Chem Co Ltd Cooling fan shroud device
JP2001123836A (en) * 1999-10-26 2001-05-08 Hitachi Constr Mach Co Ltd Engine-cooling device for construction machine
JP2004324438A (en) * 2003-04-21 2004-11-18 Hitachi Constr Mach Co Ltd Cooling device for construction machine
JP2014009636A (en) * 2012-06-29 2014-01-20 Isuzu Motors Ltd Fan shroud structure

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5575743U (en) * 1978-11-20 1980-05-24
JPH0645623Y2 (en) * 1989-03-15 1994-11-24 三菱自動車工業株式会社 Fan loudspeaker mounting structure
JPH084530A (en) * 1994-06-23 1996-01-09 Aisin Chem Co Ltd Cooling fan shroud device
JPH112127A (en) * 1997-06-11 1999-01-06 Aisin Chem Co Ltd Cooling fan shroud device
JP2001123836A (en) * 1999-10-26 2001-05-08 Hitachi Constr Mach Co Ltd Engine-cooling device for construction machine
JP2004324438A (en) * 2003-04-21 2004-11-18 Hitachi Constr Mach Co Ltd Cooling device for construction machine
JP2014009636A (en) * 2012-06-29 2014-01-20 Isuzu Motors Ltd Fan shroud structure

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPWO2020067123A1 (en) * 2018-09-26 2021-11-04 東京ラヂエーター製造株式会社 Fan guide unit
JP7261809B2 (en) 2018-09-26 2023-04-20 東京ラヂエーター製造株式会社 fan guide unit

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