JP2011232006A - Supporting member of heat exchanger - Google Patents

Supporting member of heat exchanger Download PDF

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JP2011232006A
JP2011232006A JP2010104928A JP2010104928A JP2011232006A JP 2011232006 A JP2011232006 A JP 2011232006A JP 2010104928 A JP2010104928 A JP 2010104928A JP 2010104928 A JP2010104928 A JP 2010104928A JP 2011232006 A JP2011232006 A JP 2011232006A
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hole
pipe
wall
piping
bracket
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Hiroshi Toyoura
宏 豊浦
Tomoaki Uehara
智明 上原
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Marelli Corp
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Calsonic Kansei Corp
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Abstract

PROBLEM TO BE SOLVED: To provide a bracket suppressing deterioration of a pipe communicating with a condenser.SOLUTION: The bracket 1 supporting first piping 4 and second piping 5 communicating with the condenser includes: a top part 9a of which the length in the direction of center axis 30 of a first through-hole 6 is shorter than length of the first through-hole 6, which is extended in the circumferential direction of the first through-hole 6, and which comes into contact with the first piping 4, is provided to the inner wall of a first through-hole 6 where the first piping penetrates; and a top part 10a of which the length in the direction of center axis 31 of a second through-hole 7 is shorter than length of the second through-hole 7, which is extended in the circumferential direction of the second through-hole 7, and which comes into contact with the second piping 5, is provided to the inner wall of the second through-hole 7 where the second piping 5 penetrates.

Description

本発明は熱交換器の支持部材に関するものである。   The present invention relates to a support member for a heat exchanger.

従来、車両の前方側に配置されたコンデンサに接続する配管をエンジンルーム側へ延設する場合に、配管をブラケットによって支持するものが特許文献１に開示されている。   Conventionally, Patent Document 1 discloses a structure in which a pipe connected to a capacitor arranged on the front side of a vehicle is extended to the engine room side by supporting the pipe with a bracket.

特許文献１では、ブラケットの貫通孔を配管の外径と同じ径で形成することで、貫通孔と配管との間に隙間が生じることを抑制している。これによってエンジンルーム側の熱気がコンデンサの車両前方側に吹き返すことを抑制し、コンデンサの冷却性能の低下を抑制している。   In patent document 1, it is suppressing that a clearance gap arises between a through-hole and piping by forming the through-hole of a bracket with the same diameter as the outer diameter of piping. As a result, the hot air on the engine room side is prevented from blowing back to the vehicle front side of the condenser, and the cooling performance of the condenser is prevented from being lowered.

特開２００７−１２６０２０号公報JP 2007-12620 A

しかし、上記の発明では、ブラケットの貫通孔の内壁と配管との間に水が浸入した場合、例えば走行中に跳ね上がった水がブラケットにかかった場合に、内壁と配管との間に水が溜まり、この水によって配管が劣化する、といった問題点がある。   However, in the above-described invention, when water enters between the inner wall of the through hole of the bracket and the pipe, for example, when water splashed during traveling is applied to the bracket, the water accumulates between the inner wall and the pipe. There is a problem that the piping deteriorates due to this water.

本発明はこのような問題点を解決するために発明されたもので、ブラケットの貫通孔の内壁と配管との間に水が浸入した場合に、貫通孔の内壁と配管との間に水が溜まることを抑制し、配管の劣化を抑制することを目的とする。   The present invention has been invented to solve such a problem. When water enters between the inner wall of the through hole of the bracket and the pipe, the water is inserted between the inner wall of the through hole and the pipe. It aims at suppressing accumulation and suppressing deterioration of piping.

本発明のある態様に係る熱交換器の支持部材は、熱交換器に連通する配管が貫通する熱交換器の支持部材であって、配管が貫通する貫通孔の内壁に、貫通孔の軸方向における貫通孔の長さよりも短く、貫通孔の周方向に延び、配管と接触する頂部を備える。   A support member for a heat exchanger according to an aspect of the present invention is a support member for a heat exchanger through which a pipe communicating with the heat exchanger penetrates, and an axial direction of the through hole is formed on an inner wall of the through hole through which the pipe passes. It has a top portion that is shorter than the length of the through-hole, extends in the circumferential direction of the through-hole, and contacts the pipe.

この態様によれば、貫通孔の内壁と配管との間に水が浸入した場合、例えば走行中に跳ね上がった水が支持部材にかかった場合に、貫通孔の内壁と配管との間に水が溜まることを抑制し、配管の劣化を抑制することができる。   According to this aspect, when water enters between the inner wall of the through-hole and the pipe, for example, when water splashed during travel is applied to the support member, the water flows between the inner wall of the through-hole and the pipe. Accumulation can be suppressed and deterioration of piping can be suppressed.

本発明によると、熱交換器の配管の劣化を抑制することができる。   According to the present invention, it is possible to suppress deterioration of the piping of the heat exchanger.

本発明の実施形態におけるコンデンサ用のブラケットを取り付けた場合の斜視図である。It is a perspective view at the time of attaching the bracket for capacitors in the embodiment of the present invention. 本発明の実施形態におけるブラケットの正面図である。It is a front view of the bracket in the embodiment of the present invention. 図２におけるＡ−Ａ断面図である。It is AA sectional drawing in FIG. 図２におけるＢ−Ｂ断面図である。It is BB sectional drawing in FIG. 本実施形態のブラケットの回動部を開いた状態を示す図である。It is a figure which shows the state which opened the rotation part of the bracket of this embodiment. 本実施形態のブラケットに配管が配置された状態を示す概略断面図である。It is a schematic sectional drawing which shows the state by which piping was arrange | positioned at the bracket of this embodiment.

本発明の実施形態について説明する。図１は本実施形態の熱交換器の支持部材を示す斜視図である。本実施形態では、コンデンサの金属配管を支持するブラケットについて説明するが、これに限られることはなく、例えばエバポレータの金属配管を支持する支持部材に用いても良い。   An embodiment of the present invention will be described. FIG. 1 is a perspective view showing a support member of the heat exchanger of the present embodiment. In this embodiment, the bracket for supporting the metal pipe of the capacitor will be described, but the present invention is not limited to this. For example, the bracket may be used as a support member for supporting the metal pipe of the evaporator.

ブラケット（熱交換器の支持部材）１はラジエータコアサポート２にネジ止めされて取り付けられる。ラジエータコアサポート２は、コンデンサとラジエータとが一体的に形成された熱交換器３を支持する。コンデンサには金属部材で構成される第１配管４を介して比較的温度が高い流通媒体が流入し、コンデンサのコア部によって冷却された流通媒体が金属部材で構成される第２配管５を介してコンデンサから排出される。   A bracket (support member for heat exchanger) 1 is attached to a radiator core support 2 by screwing. The radiator core support 2 supports a heat exchanger 3 in which a condenser and a radiator are integrally formed. A circulation medium having a relatively high temperature flows into the capacitor via the first pipe 4 made of a metal member, and the circulation medium cooled by the core of the capacitor passes through the second pipe 5 made of the metal member. Discharged from the capacitor.

ここでブラケット１について図２、図３、図４を用いて詳しく説明する。図２はブラケット１の正面図である。図３は、図２のＡ−Ａ断面図である。図４は図２のＢ−Ｂ断面図である。   Here, the bracket 1 will be described in detail with reference to FIGS. 2, 3, and 4. FIG. 2 is a front view of the bracket 1. FIG. 3 is a cross-sectional view taken along the line AA of FIG. 4 is a cross-sectional view taken along the line BB in FIG.

ブラケット１には第１配管４が貫通する第１貫通孔６と、第２配管５が連通する第２貫通孔７と、ブラケット１をラジエータコアサポート２に取り付けるネジが貫通するネジ孔８が形成されている。   The bracket 1 is formed with a first through hole 6 through which the first pipe 4 passes, a second through hole 7 through which the second pipe 5 communicates, and a screw hole 8 through which a screw for attaching the bracket 1 to the radiator core support 2 passes. Has been.

図３に示すように、第１貫通孔６は、第１貫通孔６の中心軸３０に沿って拡径し、第１貫通孔６の内壁９はテーパ形状であり、内壁９の頂部９ａが第１配管４と当接する。頂部９ａは第１貫通孔６の周方向に延設され、第１貫通孔５の全周にわたって設けられる。頂部９ａの中心軸３０方向の長さは、中心軸３０方向における第１貫通孔６の長さよりも短い。頂部９ａは第１配管４と線接触する。頂部９ａは第１貫通孔６の車両前方側で第１配管４と当接し、第１貫通孔６は、車両前方側からエンジンルーム側（車両後方側）にかけて拡径する。   As shown in FIG. 3, the first through hole 6 has a diameter that increases along the central axis 30 of the first through hole 6, the inner wall 9 of the first through hole 6 has a tapered shape, and the top portion 9 a of the inner wall 9 has a top portion 9 a. It contacts the first pipe 4. The top portion 9 a extends in the circumferential direction of the first through hole 6 and is provided over the entire circumference of the first through hole 5. The length of the top portion 9a in the direction of the central axis 30 is shorter than the length of the first through hole 6 in the direction of the central axis 30. The top portion 9 a is in line contact with the first pipe 4. The top portion 9a contacts the first pipe 4 on the vehicle front side of the first through hole 6, and the diameter of the first through hole 6 increases from the vehicle front side to the engine room side (vehicle rear side).

なお、本実施形態では、第１貫通孔６の中心軸３０の単位長さに対する第１貫通孔６の径の増加率は一定ではなく、第１貫通孔６の径は段階的に拡径するが、第１貫通孔６の径の増加率を一定としても良い。また、頂部９ａをＲ形状としても良い。   In the present embodiment, the rate of increase in the diameter of the first through hole 6 with respect to the unit length of the central axis 30 of the first through hole 6 is not constant, and the diameter of the first through hole 6 increases in steps. However, the increasing rate of the diameter of the first through hole 6 may be constant. Moreover, it is good also considering the top part 9a as R shape.

また、図４に示すように、第２貫通孔７も、第１貫通孔６と同様に拡径しており、内壁１０の頂部１０ａが第２配管５に当接する。頂部１０ａは第２配管５と線接触する。   As shown in FIG. 4, the diameter of the second through hole 7 is also increased similarly to the first through hole 6, and the top portion 10 a of the inner wall 10 abuts on the second pipe 5. The top portion 10 a is in line contact with the second pipe 5.

頂部９ａを第１貫通孔６の全周に設けることで、第１貫通孔６の内壁９と第１配管４との間に水が浸入した場合に、ブラケット１の取り付け方向にかかわらず、排水することができる。そのため、本実施形態のブラケット１をブラケット１の取り付け方向が異なる車両にも用いることができ、部品を共通化することでコストを削減することができる。頂部１０ａについても同様である。   By providing the top portion 9a on the entire circumference of the first through-hole 6, when water enters between the inner wall 9 of the first through-hole 6 and the first pipe 4, drainage is performed regardless of the mounting direction of the bracket 1. can do. Therefore, the bracket 1 of this embodiment can be used also for vehicles with different mounting directions of the bracket 1, and costs can be reduced by sharing parts. The same applies to the top portion 10a.

ブラケット１は、第１貫通孔６の中心軸３０と、第２貫通孔７の中心軸３１とを通る面で固定部１１と回動部１２とに分割され、回動部１２は第１貫通孔６と第２貫通孔７との間でさらに第１回動部１３と第２回動部１４とに分割される。   The bracket 1 is divided into a fixed portion 11 and a rotating portion 12 on a plane passing through the central axis 30 of the first through hole 6 and the central axis 31 of the second through hole 7, and the rotating portion 12 is divided into the first through hole. It is further divided into a first rotating part 13 and a second rotating part 14 between the hole 6 and the second through hole 7.

第１回動部１３はヒンジ１５を介して固定部１１に回動可能に取り付けられている。図２は第１回動部１３および第２回動部１４を閉じている状態であり、この状態から第１回動部１３をヒンジ１５を介して回動させると、図５に示すように第１貫通孔６は中心軸３０方向と垂直な平面における断面が半円状となる２つの凹部６ａ、６ｂに分割されて、第１配管４を固定部１１側の凹部６ａ内に配置することができる。   The first rotating part 13 is rotatably attached to the fixed part 11 via a hinge 15. FIG. 2 shows a state in which the first rotating unit 13 and the second rotating unit 14 are closed. When the first rotating unit 13 is rotated through the hinge 15 from this state, as shown in FIG. The first through-hole 6 is divided into two recesses 6a and 6b having a semicircular cross section in a plane perpendicular to the direction of the central axis 30, and the first pipe 4 is disposed in the recess 6a on the fixed part 11 side. Can do.

第２回動部１４はヒンジ１６を介して固定部１１に回動可能に取り付けられている。第２回動部１４をヒンジ１６を介して回動させると、図５に示すように第２貫通孔７は中心軸３１方向と垂直な平面における断面が半円状となる２つの凹部７ａ、７ｂに分割されて、第２配管５を固定部１１の凹部７ａ内に配置することができる。   The second rotating part 14 is rotatably attached to the fixed part 11 via a hinge 16. When the second rotating portion 14 is rotated via the hinge 16, as shown in FIG. 5, the second through-hole 7 has two recesses 7a having a semicircular cross section in a plane perpendicular to the direction of the central axis 31. The second pipe 5 can be arranged in the concave portion 7 a of the fixed portion 11 by being divided into 7 b.

次に本実施形態の作用について図６を用いて説明する。ここでは第１貫通孔６における作用について説明するが、第２貫通孔７においても同様である。図６は、第１配管４と第１貫通孔６と関係を示す概略図である。   Next, the effect | action of this embodiment is demonstrated using FIG. Although the operation in the first through hole 6 will be described here, the same applies to the second through hole 7. FIG. 6 is a schematic view showing the relationship between the first pipe 4 and the first through hole 6.

第１貫通孔６の内壁９に頂部９ａを設けることで、第１貫通孔６に第１配管４を配置した場合に、第１配管４と第１貫通孔６の頂部９ａとは線接触する。また、第１貫通孔６は車両の前方側からエンジンルーム側にかけて拡径するので、第１配管４と第１貫通孔６の内壁９との間に形成される空隙２０はエンジンルーム側となるにつれて大きくなる。   By providing the top 9 a on the inner wall 9 of the first through hole 6, when the first pipe 4 is disposed in the first through hole 6, the first pipe 4 and the top 9 a of the first through hole 6 are in line contact. . Further, since the first through hole 6 has a diameter increasing from the front side of the vehicle to the engine room side, the gap 20 formed between the first pipe 4 and the inner wall 9 of the first through hole 6 is on the engine room side. As it grows.

第１配管４と第１貫通孔６の内壁９との間に水が浸入した場合、例えば走行中に車両の下方で水が跳ねて、車両の下方側からブラケット１に水がかかった場合に、第１配管４と第１貫通孔６の頂部９ａとが線接触することで、第１配管４と第１貫通孔６の内壁９との間に水が溜まることを抑制することができる。また、空隙２０に浸入した水は、水の自重により鉛直方向下側の内壁９の傾斜に沿って空隙２０から排出される。このようにして、第１配管４と第１貫通孔６の内壁９との間に水が浸入した場合でも、第１配管４と第１貫通孔６の内壁９との間に水が溜まることを抑制することができる。   When water enters between the first pipe 4 and the inner wall 9 of the first through-hole 6, for example, when water splashes below the vehicle during traveling and water is applied to the bracket 1 from the lower side of the vehicle. Since the first pipe 4 and the top portion 9 a of the first through hole 6 are in line contact, it is possible to suppress water from being accumulated between the first pipe 4 and the inner wall 9 of the first through hole 6. Further, the water that has entered the gap 20 is discharged from the gap 20 along the inclination of the inner wall 9 on the lower side in the vertical direction due to its own weight. In this way, even when water enters between the first pipe 4 and the inner wall 9 of the first through-hole 6, water accumulates between the first pipe 4 and the inner wall 9 of the first through-hole 6. Can be suppressed.

なお、本実施形態では、第１貫通孔６の内壁９を車両前方側からエンジンルーム側にかけて拡径するテーパ形状としたが、これに限られることはない。例えば内壁をエンジンルーム側から前方側にかけて拡径するテーパ形状としても良い。また、第１貫通孔の内壁を、車両前方側にかけて拡径するテーパ形状とエンジンルーム側にかけて拡径するテーパ形状とを有するようにし、前方側およびエンジンルーム側のどちら側にも水が排出されるようにしても良い。第２貫通孔の内壁についても同様である。   In the present embodiment, the inner wall 9 of the first through hole 6 has a tapered shape that expands from the vehicle front side to the engine room side, but is not limited thereto. For example, the inner wall may have a tapered shape that expands from the engine room side to the front side. Further, the inner wall of the first through hole has a tapered shape that expands toward the front side of the vehicle and a tapered shape that expands toward the engine room side, and water is discharged to both the front side and the engine room side. You may make it. The same applies to the inner wall of the second through hole.

また、本実施形態において、頂部９ａは第１配管４と線接触するが、これに限られることはなく、第１配管４の中心軸３０方向における頂部９ａの長さは、第１貫通孔６の中心軸方向における長さよりも短く、頂部９ａと第１配管４との間に水が溜まらず、第１配管４の劣化を抑制できればよい。   Moreover, in this embodiment, although the top part 9a is line-contacted with the 1st piping 4, it is not restricted to this, The length of the top part 9a in the central axis 30 direction of the 1st piping 4 is the 1st through-hole 6 It is shorter than the length in the central axis direction, and water does not accumulate between the top portion 9a and the first pipe 4, and deterioration of the first pipe 4 can be suppressed.

また、頂部９ａを第１貫通孔６の全周に設けたが、これに限られることはない。複数の頂部を設け、隣接する頂部に切り欠き部を設けても良い。この場合には、第１配管の外周に突出部を設けて、突出部によって切り欠き部を閉塞する。頂部は、例えば第１貫通孔の周方向において等間隔に配置される。なお、頂部を鉛直方向の下方側付近にのみ配置しても良い。第２貫通孔７の頂部１０ａについても同様である。   Moreover, although the top part 9a was provided in the perimeter of the 1st through-hole 6, it is not restricted to this. A plurality of top portions may be provided, and cutout portions may be provided at adjacent top portions. In this case, a protrusion is provided on the outer periphery of the first pipe, and the notch is closed by the protrusion. For example, the tops are arranged at equal intervals in the circumferential direction of the first through hole. In addition, you may arrange | position a top part only in the downward direction vicinity of a perpendicular direction. The same applies to the top portion 10a of the second through hole 7.

また、ラジエータと別体に構成したコンデンサに使用しても良い。   Moreover, you may use for the capacitor | condenser comprised separately from the radiator.

本発明の実施形態の効果について説明する。ここでは第１貫通孔６における効果について説明するが、第２貫通孔７においても同様である。   The effect of the embodiment of the present invention will be described. Although the effect in the 1st through-hole 6 is demonstrated here, it is the same also in the 2nd through-hole 7. FIG.

第１貫通孔６の頂部９ａは、第１貫通孔６の中心軸３０方向における長さが、第１貫通孔６の長さよりも短く、頂部９ａは第１配管４と線接触するので、第１配管４と第１貫通孔６の内壁９との間に水が浸入した場合に、第１配管４と第１貫通孔６の内壁９との間に水が溜まることを抑制する。これによって溜まった水による第１配管４の腐食を抑制し、第１配管４の劣化を抑制することができる。   The top 9a of the first through hole 6 has a length in the direction of the central axis 30 of the first through hole 6 that is shorter than the length of the first through hole 6, and the top 9a is in line contact with the first pipe 4. When water enters between the one pipe 4 and the inner wall 9 of the first through hole 6, the water is prevented from collecting between the first pipe 4 and the inner wall 9 of the first through hole 6. Accordingly, corrosion of the first pipe 4 due to accumulated water can be suppressed, and deterioration of the first pipe 4 can be suppressed.

第１貫通孔６が第１貫通孔６の中心軸３０に沿って拡径することで、第１配管４と第１貫通孔６の内壁９との間に水が浸入した場合に、内壁９に沿って水を排出することができ、第１配管４の劣化を抑制することができる。   When the diameter of the first through hole 6 increases along the central axis 30 of the first through hole 6, when water enters between the first pipe 4 and the inner wall 9 of the first through hole 6, the inner wall 9 It is possible to discharge water along the line and to suppress the deterioration of the first pipe 4.

本発明は上記した実施形態に限定されるものではなく、その技術的思想の範囲内でなしうるさまざまな変更、改良が含まれることは言うまでもない。   It goes without saying that the present invention is not limited to the above-described embodiments, and includes various modifications and improvements that can be made within the scope of the technical idea.

１ ブラケット
４ 第１配管（配管）
５ 第２配管（配管）
６ 第１貫通孔（貫通孔）
７ 第２貫通孔（貫通孔）
９ 内壁
９ａ 頂部
１０ 内壁
１０ａ 頂部 1 Bracket 4 First piping (Piping)
5 Second piping (piping)
6 1st through hole (through hole)
7 Second through hole (through hole)
9 inner wall 9a top 10 inner wall 10a top

Claims (3)

熱交換器に連通する配管が貫通する熱交換器の支持部材であって、
前記配管が貫通する貫通孔の内壁に、前記貫通孔の軸方向における前記貫通孔の長さよりも短く、前記貫通孔の周方向に延び、前記配管に当接する頂部を備えることを特徴とする熱交換器の支持部材。 A heat exchanger support member through which a pipe communicating with the heat exchanger passes,
The inner wall of the through hole through which the pipe penetrates has a top portion that is shorter than the length of the through hole in the axial direction of the through hole, extends in the circumferential direction of the through hole, and contacts the pipe. Support member for the exchanger. 前記頂部は、前記配管と線接触することを特徴とする請求項１に記載の熱交換器の支持部材。   The support member of the heat exchanger according to claim 1, wherein the top portion is in line contact with the pipe. 前記貫通孔は、前記頂部から前記貫通孔の軸に沿って拡径することを特徴とする請求項１または２に記載の熱交換器の支持部材。   The support member of the heat exchanger according to claim 1 or 2, wherein the diameter of the through hole is increased from the top along the axis of the through hole.
JP2010104928A 2010-04-30 2010-04-30 Supporting member of heat exchanger Pending JP2011232006A (en)

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Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5810586U (en) * 1981-07-14 1983-01-24 日立造船株式会社 Mounting structure of heat exchanger tubes on a full plate in a heat exchanger
JPS6038907U (en) * 1983-08-26 1985-03-18 加藤発条株式会社 Holder
JPS60105905U (en) * 1983-12-19 1985-07-19 バブコツク日立株式会社 In-layer heat exchanger tube support device
JPS6170287A (en) * 1984-09-12 1986-04-11 株式会社日立製作所 Piping supporter
JPH0550274U (en) * 1991-12-13 1993-07-02 古河電気工業株式会社 Refrigerant heat insulation pipe vertical pipe support
JPH066979U (en) * 1993-06-30 1994-01-28 昭和アルミニウム株式会社 Heat exchanger
JP3076891U (en) * 2000-10-10 2001-04-20 カルソニックプロダクツ株式会社 Pipe fixing bracket
JP2002087328A (en) * 2000-09-19 2002-03-27 Inoac Corp Blocking plug
JP2005129861A (en) * 2003-10-27 2005-05-19 Tokai Kogyo Co Ltd Resin molded waterproof member
JP2007126020A (en) * 2005-11-04 2007-05-24 Calsonic Kansei Corp Radiator core support
JP2009036290A (en) * 2007-08-01 2009-02-19 Nissan Motor Co Ltd Pipe connection structure

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5810586U (en) * 1981-07-14 1983-01-24 日立造船株式会社 Mounting structure of heat exchanger tubes on a full plate in a heat exchanger
JPS6038907U (en) * 1983-08-26 1985-03-18 加藤発条株式会社 Holder
JPS60105905U (en) * 1983-12-19 1985-07-19 バブコツク日立株式会社 In-layer heat exchanger tube support device
JPS6170287A (en) * 1984-09-12 1986-04-11 株式会社日立製作所 Piping supporter
JPH0550274U (en) * 1991-12-13 1993-07-02 古河電気工業株式会社 Refrigerant heat insulation pipe vertical pipe support
JPH066979U (en) * 1993-06-30 1994-01-28 昭和アルミニウム株式会社 Heat exchanger
JP2002087328A (en) * 2000-09-19 2002-03-27 Inoac Corp Blocking plug
JP3076891U (en) * 2000-10-10 2001-04-20 カルソニックプロダクツ株式会社 Pipe fixing bracket
JP2005129861A (en) * 2003-10-27 2005-05-19 Tokai Kogyo Co Ltd Resin molded waterproof member
JP2007126020A (en) * 2005-11-04 2007-05-24 Calsonic Kansei Corp Radiator core support
JP2009036290A (en) * 2007-08-01 2009-02-19 Nissan Motor Co Ltd Pipe connection structure

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