JP2006071170A - Heat exchanger - Google Patents

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JP2006071170A
JP2006071170A JP2004254213A JP2004254213A JP2006071170A JP 2006071170 A JP2006071170 A JP 2006071170A JP 2004254213 A JP2004254213 A JP 2004254213A JP 2004254213 A JP2004254213 A JP 2004254213A JP 2006071170 A JP2006071170 A JP 2006071170A
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hole
duct
protrusion
insertion direction
heat exchanger
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JP4572630B2 (en
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Tatsuya Sugano
辰也 菅野
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Denso Corp
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Denso Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To prevent the rattling of a duct regardless of dispersion in size in manufacturing and to prevent excessive increase of crushing load. <P>SOLUTION: In this heat exchanger wherein a projecting part 23 formed on the duct is inserted into a hole part 171 formed on a heat exchanging part, and the duct is connected with and fixed to the heat exchanging part, the projecting part 23 is provided with a rib part 232 of a triangular pyramid body tapering toward a front side in the inserting direction X to the hole part 171, and a thickness of the projecting part 23 in the direction orthogonal to the inserting direction X is increased from the front side in the inserting direction X toward a back side. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、熱交換部にダクトにて冷却用の空気を導く形式の熱交換器に関するものである。   The present invention relates to a heat exchanger of a type in which cooling air is guided to a heat exchange section by a duct.

従来、２つの部材を連結固定する場合、一方の部材に設けた突起部を他方の部材に設けた穴部に挿入する方法が知られている。そして、特許文献１に記載されたファンシュラウド取付構造では、突起部と穴部とを接触させることにより、シュラウド（ダクトに相当）のガタつきを防止するようにしている。
特開２００４−９２４２１号公報 Conventionally, when two members are connected and fixed, a method of inserting a protrusion provided on one member into a hole provided on the other member is known. In the fan shroud mounting structure described in Patent Document 1, the shroud (corresponding to a duct) is prevented from rattling by bringing the protrusion and the hole into contact with each other.
Japanese Patent Laid-Open No. 2004-92421

しかしながら、特許文献１に記載されたものでは、穴部への挿入向きに対して直交する方向の突起部の厚さ（以下、突起部厚さという）が、製造時の寸法バラツキにより穴部の幅寸法よりも小さく形成された場合は、突起部と穴部との接触状態が安定して得られず、シュラウドのガタつきを防止することができないという問題が発生する。   However, in the device described in Patent Document 1, the thickness of the protrusion in the direction orthogonal to the insertion direction into the hole (hereinafter referred to as the protrusion thickness) is reduced due to the dimensional variation at the time of manufacture. When it is formed smaller than the width dimension, the contact state between the projection and the hole cannot be stably obtained, and there is a problem that the backlash of the shroud cannot be prevented.

一方、製造時の寸法バラツキによりその突起部厚さが穴部の幅寸法よりも過大に大きく形成された場合は、潰し代が大きくなり過ぎて潰し荷重が大きくなり、穴部に突起部を挿入することができなくなるという問題が発生する。   On the other hand, if the thickness of the protrusion is excessively larger than the width of the hole due to dimensional variation during manufacturing, the crushing margin will be too large and the crushing load will increase, and the protrusion will be inserted into the hole. The problem of being unable to do so occurs.

本発明は上記点に鑑みて、製造時の寸法バラツキに拘わらず、ダクトのガタつきを防止可能で、且つ潰し荷重が過大になるのを防止可能にすることを目的とする。   In view of the above points, an object of the present invention is to make it possible to prevent rattling of a duct, and to prevent an excessive crushing load, regardless of dimensional variations during manufacturing.

上記目的を達成するため、請求項１に記載の発明では、高温流体を空気との熱交換により冷却する熱交換部（１）と、熱交換部（１）に冷却用の空気を導くダクト（２）とを備え、ダクト（２）に設けた突起部（２３）を熱交換部（１）に設けた穴部（１７１）に挿入して、ダクト（２）を熱交換部（１）に連結固定する熱交換器において、突起部（２３）は、穴部（１７１）への挿入向き（Ｘ）に対して直交する方向の厚さが、挿入向き（Ｘ）の前方側から後方側に向かって増加していることを特徴とする。   In order to achieve the above object, according to the first aspect of the present invention, a heat exchanging part (1) for cooling a high-temperature fluid by heat exchange with air, and a duct for guiding cooling air to the heat exchanging part (1) ( 2), the protrusion (23) provided on the duct (2) is inserted into the hole (171) provided on the heat exchange part (1), and the duct (2) is inserted into the heat exchange part (1). In the heat exchanger to be connected and fixed, the protrusion (23) has a thickness in a direction orthogonal to the insertion direction (X) into the hole (171) from the front side to the rear side in the insertion direction (X). It is characterized by an increasing trend.

ところで、挿入向き最前部の突起部厚さが穴部の幅寸法よりも小さく、且つ挿入向き最後部の突起部厚さが穴部の幅寸法よりも大きければ、突起部と穴部とを接触させることができる。   By the way, if the projection thickness at the foremost part in the insertion direction is smaller than the width dimension of the hole and the projection thickness at the rearmost part in the insertion direction is larger than the width dimension of the hole, the projection and the hole are brought into contact with each other. Can be made.

そして、請求項１に記載の発明によれば、製造時の寸法バラツキがあっても、このような突起部厚さと穴部の幅寸法との関係を容易に実現することができ、したがって、突起部と穴部とを確実に接触させて、ダクトのガタつきを防止することができる。   According to the first aspect of the present invention, even if there is a dimensional variation during manufacturing, such a relationship between the thickness of the protrusion and the width of the hole can be easily realized. The portion and the hole can be reliably brought into contact with each other to prevent the duct from rattling.

また、穴部に対する突起部の挿入深さによって潰し代が変わるため、突起部の挿入深さを調整することにより、潰し荷重が過大になるのを防止することができる。   Further, since the crushing allowance varies depending on the insertion depth of the protrusion with respect to the hole, it is possible to prevent the crushing load from becoming excessive by adjusting the insertion depth of the protrusion.

請求項２に記載の発明のように、突起部（２３）における穴部（１７１）に接触する部位の少なくとも一部を、穴部（１７１）への挿入向き（Ｘ）に対して傾斜させることにより、請求項１に記載の発明を容易に実施することができる。   As in the second aspect of the invention, at least a part of a portion of the projection (23) that contacts the hole (171) is inclined with respect to the insertion direction (X) into the hole (171). Accordingly, the invention of claim 1 can be easily implemented.

請求項３に記載の発明では、突起部（２３）は、穴部（１７１）への挿入向き（Ｘ）に対して直交する断面の形状が三角形であるリブ部（２３２）を有し、リブ部（２３２）の角部（２３２ａ）が穴部（１７１）に接触していることを特徴とする。   In the invention according to claim 3, the protrusion (23) has a rib portion (232) whose cross-sectional shape orthogonal to the insertion direction (X) into the hole portion (171) is a triangle. The corner (232a) of the portion (232) is in contact with the hole (171).

これによると、突起部全体が矩形断面形状の場合よりも、潰し荷重を小さくすることができる。   According to this, a crushing load can be made smaller than the case where the whole protrusion part is a rectangular cross-sectional shape.

なお、上記各手段の括弧内の符号は、後述する実施形態に記載の具体的手段との対応関係を示すものである。   In addition, the code | symbol in the bracket | parenthesis of each said means shows the correspondence with the specific means as described in embodiment mentioned later.

本実施形態は、走行用車両に搭載されてエンジンオイルを冷却する熱交換器に本発明を適用したものである。図１は本実施形態に係る熱交換器の正面図、図２は図１の側面断面図、図３は図２のＡ部の拡大断面図、図４は図１の熱交換部単体の正面図、図５は図１のダクト単体の正面図、図６は図１の熱交換器における嵌合部の分解斜視図、図７は図５のダクトにおける突起部の斜視図、図８は図５のＢ−Ｂ線に沿う断面図である。   In the present embodiment, the present invention is applied to a heat exchanger that is mounted on a traveling vehicle and cools engine oil. 1 is a front view of a heat exchanger according to the present embodiment, FIG. 2 is a side cross-sectional view of FIG. 1, FIG. 3 is an enlarged cross-sectional view of part A of FIG. 5, FIG. 5 is a front view of the single duct of FIG. 1, FIG. 6 is an exploded perspective view of a fitting portion in the heat exchanger of FIG. 1, FIG. 7 is a perspective view of a protrusion in the duct of FIG. It is sectional drawing which follows the BB line of 5. FIG.

図１、図２に示すように、熱交換器は、高温流体であるエンジンオイルを空気との熱交換により冷却する熱交換部１と、この熱交換部１に冷却用の空気を導くダクト２とを備えている。   As shown in FIGS. 1 and 2, the heat exchanger includes a heat exchange unit 1 that cools engine oil, which is a high-temperature fluid, by heat exchange with air, and a duct 2 that guides cooling air to the heat exchange unit 1. And.

図４、図６に示すように、熱交換部１は、いわゆるドロンカップ型であり、所定形状にプレス成形されたアルミニウム製のチューブプレートを積層した後ろう付けにて接合することにより、複数の偏平状のチューブ１１が積層して形成されるとともに、チューブ１１の長手方向の両端にタンク部１２、１３が形成されている。   As shown in FIGS. 4 and 6, the heat exchanging portion 1 is a so-called drone cup type, and a plurality of aluminum tube plates press-molded into a predetermined shape are laminated and then joined by brazing. A flat tube 11 is formed by being laminated, and tank portions 12 and 13 are formed at both ends of the tube 11 in the longitudinal direction.

そして、図示しないエンジンから導かれたエンジンオイルは、一方のタンク部１２に流入した後、各チューブ１１に分配され、チューブ１１内を通過した後他方のタンク１３に集合し、エンジンに戻されるようになっている。   Engine oil guided from an engine (not shown) flows into one tank portion 12 and is then distributed to each tube 11. After passing through the tube 11, the oil is collected in the other tank 13 and returned to the engine. It has become.

チューブ１１間には、チューブ１１内を通過するエンジンオイルと、チューブ１１間を通過する空気との、熱交換を促進するアルミニウム製のアウターフィン１４が配設されている。   Between the tubes 11, aluminum outer fins 14 that promote heat exchange between engine oil that passes through the tubes 11 and air that passes between the tubes 11 are disposed.

チューブ１１の積層方向の両端にはアルミニウム製の上端板１５および下端板１６が配設されている。上端板１５には、２つの雌ねじ１５１が形成され、下端板１６には、アルミニウム製のアングル１７が取付られ、このアングル１７には長方形の貫通した穴部１７１が形成されている。   An upper end plate 15 and a lower end plate 16 made of aluminum are disposed at both ends of the tube 11 in the stacking direction. Two female screws 151 are formed on the upper end plate 15, and an aluminum angle 17 is attached to the lower end plate 16, and a rectangular through hole 171 is formed in the angle 17.

図２に示すように、ダクト２は、樹脂よりなり、入口２１から流入した空気（走行風）を熱交換部１におけるチューブ１１およびアウターフィン１４の部位に導くものであり、熱交換部１の車両前方側（空気流れ上流側）に取り付けられている。   As shown in FIG. 2, the duct 2 is made of resin, and guides the air (running wind) flowing from the inlet 21 to the tube 11 and the outer fin 14 in the heat exchange unit 1. It is attached to the vehicle front side (air flow upstream side).

図５に示すように、ダクト２は、上部側両端に鍔部２２を備えており、この鍔部２２には貫通した長穴２２１が形成されている。   As shown in FIG. 5, the duct 2 includes flange portions 22 at both ends on the upper side, and a long hole 221 is formed in the flange portion 22.

図５〜図８に示すように、ダクト２は、アングル１７の穴部１７１に挿入される突起部２３を備えている。突起部２３は、突起部２３を穴部１７１に挿入する向きＸ（以下、挿入向きＸという）に対して直交する断面の形状が四角形で、且つ挿入向きＸの全域で厚さが一定である板部２３１と、この板部２３１の一端面に２つ形成され、挿入向きＸに対して直交する断面の形状が三角形であるリブ部２３２とを備えている。   As shown in FIGS. 5 to 8, the duct 2 includes a protrusion 23 that is inserted into the hole 171 of the angle 17. The protrusion 23 has a quadrangular cross-sectional shape perpendicular to the direction X in which the protrusion 23 is inserted into the hole 171 (hereinafter referred to as the insertion direction X), and the thickness is constant throughout the insertion direction X. Two plate portions 231 and two rib portions 232 formed on one end face of the plate portion 231 and having a triangular cross-sectional shape orthogonal to the insertion direction X are provided.

より詳細には、リブ部２３２は、挿入向きＸの前方側に向かって細くなる三角錐体であり、リブ部２３２の角部２３２ａが挿入向きＸに対して傾斜している。したがって、挿入向きＸに対して直交する方向の突起部２３の厚さ（以下、突起部厚さという）は、挿入向きＸの前方側から後方側に向かって増加している。なお、突起部厚さは、板部２３１の厚さとリブ部２３２の厚さの和である。   More specifically, the rib portion 232 is a triangular pyramid that narrows toward the front side in the insertion direction X, and the corner portion 232a of the rib portion 232 is inclined with respect to the insertion direction X. Therefore, the thickness of the protrusion 23 in the direction orthogonal to the insertion direction X (hereinafter referred to as the protrusion thickness) increases from the front side to the rear side in the insertion direction X. The protrusion thickness is the sum of the thickness of the plate portion 231 and the thickness of the rib portion 232.

また、挿入向きＸ最前部の突起部厚さが、挿入向きＸに対して直交する方向の穴部１７１の幅寸法よりも小さく、且つ挿入向きＸ最後部の突起部厚さが穴部１７１の幅寸法よりも大きくなっている。   Further, the protrusion thickness at the foremost portion in the insertion direction X is smaller than the width dimension of the hole portion 171 in the direction orthogonal to the insertion direction X, and the protrusion thickness at the rearmost portion in the insertion direction X is the hole portion 171. It is larger than the width dimension.

上記構成になる熱交換器は、まず、ダクト２の突起部２３を熱交換部１の穴部１７１に挿入し、次に、図示しないボルトを長穴２２１に挿入して上端板１５の雌ねじ１５１に螺合することにより、熱交換部１とダクト２が結合される。   In the heat exchanger having the above-described configuration, first, the projection 23 of the duct 2 is inserted into the hole 171 of the heat exchange unit 1, and then a bolt (not shown) is inserted into the long hole 221 so that the female screw 151 of the upper end plate 15 is inserted. The heat exchange unit 1 and the duct 2 are coupled by being screwed together.

ここで、挿入向きＸ最前部の突起部厚さが穴部１７１の幅寸法よりも小さく、且つ挿入向きＸ最後部の突起部厚さが穴部１７１の幅寸法よりも大きいため、突起部２３を穴部１７１に挿入すると、板部２３１の他端面およびリブ部２３２の角部２３２ａが穴部１７１に接触する。そして、リブ部２３２の角部２３２ａが潰れ（図３参照）、突起部２３と穴部１７１との接触状態が安定して得られ、ダクト２のガタつきが防止される。   Here, since the protrusion thickness at the foremost portion in the insertion direction X is smaller than the width dimension of the hole portion 171, and the protrusion thickness at the rearmost portion in the insertion direction X is larger than the width dimension of the hole portion 171, Is inserted into the hole portion 171, the other end surface of the plate portion 231 and the corner portion 232 a of the rib portion 232 come into contact with the hole portion 171. And the corner | angular part 232a of the rib part 232 is crushed (refer FIG. 3), the contact state of the projection part 23 and the hole part 171 is obtained stably, and the play of the duct 2 is prevented.

なお、突起部２３を穴部１７１に挿入する時の荷重（挿入性）は、挿入向きＸに対して直交する断面における角部２３２ａの角度θで調整可能であり、その角度θは、３０°〜１２０°が望ましい。   In addition, the load (insertability) when inserting the protrusion 23 into the hole 171 can be adjusted by the angle θ of the corner 232a in the cross section orthogonal to the insertion direction X, and the angle θ is 30 °. ˜120 ° is desirable.

（他の実施形態）
上記各実施形態では、ダクト２を樹脂製としたが、ダクト２は熱交換部１よりも柔らかいものであれば、軟質金属であっても良い。 (Other embodiments)
In each of the above embodiments, the duct 2 is made of resin. However, the duct 2 may be made of a soft metal as long as it is softer than the heat exchange unit 1.

本発明の一実施形態に係る熱交換器の正面図である。It is a front view of the heat exchanger which concerns on one Embodiment of this invention. 図１の側面断面図である。It is side surface sectional drawing of FIG. 図２のＡ部の拡大断面図である。It is an expanded sectional view of the A section of FIG. 図１の熱交換部単体の正面図である。It is a front view of the heat exchange part single-piece | unit of FIG. 図１のダクト単体の正面図である。It is a front view of the duct single-piece | unit of FIG. 図１の熱交換器における嵌合部の分解斜視図である。It is a disassembled perspective view of the fitting part in the heat exchanger of FIG. 図５のダクトにおける突起部の斜視図である。It is a perspective view of the projection part in the duct of FIG. 図５のＢ−Ｂ線に沿う断面図である。It is sectional drawing which follows the BB line of FIG.

符号の説明Explanation of symbols

１…熱交換部、２…ダクト、２３…突起部２３、１７１…穴部。   DESCRIPTION OF SYMBOLS 1 ... Heat exchange part, 2 ... Duct, 23 ... Projection part 23, 171 ... Hole part.

Claims (3)

高温流体を空気との熱交換により冷却する熱交換部（１）と、前記熱交換部（１）に冷却用の空気を導くダクト（２）とを備え、前記ダクト（２）に設けた突起部（２３）を前記熱交換部（１）に設けた穴部（１７１）に挿入して、前記ダクト（２）を前記熱交換部（１）に連結固定する熱交換器において、
前記突起部（２３）は、前記穴部（１７１）への挿入向き（Ｘ）に対して直交する方向の厚さが、挿入向き（Ｘ）の前方側から後方側に向かって増加していることを特徴とする熱交換器。 A projection provided on the duct (2), comprising a heat exchange part (1) for cooling the high-temperature fluid by heat exchange with air, and a duct (2) for guiding cooling air to the heat exchange part (1). In the heat exchanger for inserting and fixing the duct (2) to the heat exchange part (1) by inserting the part (23) into the hole (171) provided in the heat exchange part (1),
The protrusion (23) has a thickness in a direction perpendicular to the insertion direction (X) into the hole (171) increasing from the front side to the rear side in the insertion direction (X). A heat exchanger characterized by that. 前記突起部（２３）における前記穴部（１７１）に接触する部位の少なくとも一部が、前記穴部（１７１）への挿入向き（Ｘ）に対して傾斜していることを特徴とする請求項１に記載の熱交換器。 The at least part of the portion of the protrusion (23) that contacts the hole (171) is inclined with respect to the insertion direction (X) into the hole (171). The heat exchanger according to 1. 前記突起部（２３）は、前記穴部（１７１）への挿入向き（Ｘ）に対して直交する断面の形状が三角形であるリブ部（２３２）を有し、前記リブ部（２３２）の角部（２３２ａ）が前記穴部（１７１）に接触していることを特徴とする請求項１または２に記載の熱交換器。 The protruding portion (23) has a rib portion (232) whose cross-sectional shape orthogonal to the insertion direction (X) into the hole portion (171) is a triangle, and the corner of the rib portion (232). The heat exchanger according to claim 1 or 2, wherein the portion (232a) is in contact with the hole (171).
JP2004254213A 2004-09-01 2004-09-01 Heat exchanger Expired - Fee Related JP4572630B2 (en)

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