JP3806824B2 - Installation structure of oil cooler with built-in tank - Google Patents

Installation structure of oil cooler with built-in tank Download PDF

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Publication number
JP3806824B2
JP3806824B2 JP33496296A JP33496296A JP3806824B2 JP 3806824 B2 JP3806824 B2 JP 3806824B2 JP 33496296 A JP33496296 A JP 33496296A JP 33496296 A JP33496296 A JP 33496296A JP 3806824 B2 JP3806824 B2 JP 3806824B2
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Japan
Prior art keywords
short tubular
leaf spring
inverted
oil cooler
tubular portion
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JP33496296A
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JPH10160386A (en
Inventor
明彦 松島
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T.RAD CO., L T D.
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T.RAD CO., L T D.
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/0234—Header boxes; End plates having a second heat exchanger disposed there within, e.g. oil cooler

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)
  • Details Of Heat-Exchange And Heat-Transfer (AREA)

Description

【０００１】
【発明の属する技術分野】
本発明は主として自動車用ラジエータのタンクに内蔵されると共に、そのタンク壁面に取付けられる自動車用オイルクーラの取付け構造に関する。
【０００２】
【従来の技術】
この種のオイルクーラは一例として図４の如く、図示しない自動車用ラジエータの下部側の樹脂製タンク本体４に内装されると共に、その樹脂製タンク本体４の壁面にそれが取付け固定されるものである。この例におけるオイルクーラ本体２は二重筒体からなり、その二重の筒体間の両端面が閉塞され、それらの間に被冷却用オイルを流通させると共に、その内外周面に冷却水を流通させるものである。即ち、このオイルクーラ本体２の二重筒体間の一端から他端にオイルが流通し、それと冷却水との間に熱交換が行われるものである。なお、その冷却水は図示しない上部タンクからチューブ10を通り下部側の樹脂製タンク本体４に流入し、図示しない出口管よりエンジンに還流するものである。また、この樹脂製タンク本体４は軽量化その他のため、合成樹脂材料で成形される。
【０００３】
そして、オイルクーラ本体２は図６に示す如くオイルの出入り口に突設されたボス部１を介して樹脂製タンク本体４に締結固定される。このボス部１は、短管状部１ａとその基部に設けられたフランジ部１ｂとを有し、フランジ部１ｂの短管状部１ａ側端面に環状溝を有し、そこにシール用のＯリング５が嵌着される。そして、オイルクーラ本体２を樹脂製タンク本体４に挿入し、その内面側からボス部１の短管状部１ａを樹脂製タンク本体４の取付け孔内に挿入する。そして、ワッシャ６およびナット８を介してオイルクーラ本体２を樹脂製タンク本体４に締結固定するものである。このとき、Ｏリング５が樹脂製タンク本体４の開口とボス部１との間を液密に形成する。
次に、図５はナット８のかわりに図６に示す皿バネ７を用いてオイルクーラ本体２を樹脂製タンク本体４に締結固定したものであり、実公昭６３ー４１５３７号として本出願人自身が既に提案している。このオイルクーラの取付け構造は、皿バネ７を短管状部１ａの軸方向先端から挿入し、その端面をワッシャ６に押圧するものである。
【０００４】
【発明が解決しようとする課題】
図４に示す締結構造は、ナット８を短管状部１ａの先端から螺着回転するため、取付けが面倒である欠点があった。これに対して、図５に示す締結構造は皿バネ７を短管状部１ａの先端から挿入して、その先端が突き当たるまで圧入すれば足りる。したがって、その取付け自体は比較的容易であるが、皿バネ７のバネ圧を常に一定にすることが難しい欠点がある。すなわち、皿バネ７の基端面がワッシャ６に接触したとき、皿バネ７の爪部が短管状部１ａの外ネジに係止されるものであるが、その係止の仕方が必ずしも一様でない。そのため、皿バネ７による締結力にばらつきが生じる虞がある。
そこで、本発明は取付けが容易で且つ、その締結力を常に一定とし得る安定性の高いオイルクーラの取付け構造を提供することを課題とし、その課題解決のため次の構成をとる。
【０００５】
【課題を解決するための手段】
本発明は、外周にコネクタ接続用の外ネジが形成された短管状部(1a)を有し、その短管状部(1a)の軸方向一端外周にフランジ部(1b)が一体に突設され、そのフランジ部(1b)の一端面がオイルクーラ本体(2) のオイル出入口の孔縁部に液密に接合されたボス部(1) と、 前記短管状部(1a)の軸方向中間部外周にわずかに突設された板バネ係止用の鍔部(1c)と、
縦断面が逆Ｕ字状に曲折された弾性金属板よりなり、その逆Ｕ字状の頂部から中央部に前記短管状部(1a)の直径より大なる開口からなる逆Ｕ字状欠切部(3a)が形成され、その逆Ｕ字状折返し曲折部の根本部の一方の平面に、抜け止め用の段差部 (3b) が他方の平面の側へ凹陥して形成された板バネ(3) と、
を具備し、前記短管状部(1a)が樹脂製タンク本体(4) のボス部挿通孔(4a)に挿通されると共に、前記フランジ部(1b)の他端面がその挿通孔(4a)の孔縁部にシール用のＯリング(5) を介して圧接され、前記短管状部(1a)にその半径方向から前記板バネ(3) の前記逆Ｕ字状欠切部(3a)が嵌入されて、その板バネ(3) の両脚部外面が前記タンク本体(4) の外面と前記鍔部(1c)とに圧接挟持されると共に、前記ボス部 (1) の前記鍔部 (1c) の縁が前記板バネ (3) の前記段差部 (3b) よりも前記脚部の先端側に位置したタンク内蔵型オイルクーラの取付け構造である。
【０００６】
【発明の実施の形態】
次に、図面に基づいて本発明の実施の形態につき説明する。
図１は本オイルクーラの取付け構造の分解斜視図であり、図２はその板バネ３の斜視図、図３は同取付け構造の縦断面図である。
この例のオイルクーラ本体２は、前記従来型のそれと同様に二重管型のものであり、その長手方向両端部外面に図示しないオイルクーラの出入口が設けられ、その出入口の開口に一対のボス部１が液密にろう付けまたはハンダ付け固定されたものである。このボス部１は、短管状部１ａとその基部に設けたフランジ部１ｂとからなり、フランジ部１ｂの短管状部１ａ側端面にはＯリング嵌着用の環状溝が形成されている。そして、短管状部１ａは図１および図３に示す如くそのフランジ部１ｂ寄りの中間部にわずかに鍔部１ｃが突設されている。そして、鍔部１ｃより先端側の短管状部１ａ外周に外ネジが形成されたものである。
【０００７】
次に、板バネ３はバネ鋼を逆Ｕ字状に曲折すると共に、その曲折部の頂部から中間部にかけて、逆Ｕ字状欠切部３ａが形成され且つ、折り曲げ部の根元に受け止め用の段差部３ｂが設けられたものである。
そして、図１および図３に示す如く、オイルクーラ本体２が樹脂製タンク本体４内に挿入され、そのボス部１が樹脂製タンク本体４のボス部挿通孔４ａに貫通される。このとき、フランジ部１ｂの環状溝にはＯリング５が嵌入される。そして、短管状部１ａの先端側からワッシャ６が挿通され、次いで板バネ３の両脚部を閉じた状態で、その逆Ｕ字状欠切部３ａが鍔部１ｃとワッシャ６との間に嵌入される。次いで、図３の如く板バネ３を自由状態に開放すると、板バネ３の両脚部外面が樹脂製タンク本体４の外面と鍔部１ｃとに圧接挟持され、その弾発力によりオイルクーラ本体２は樹脂製タンク本体４の外面側に押圧される。すると、Ｏリング５の存在により、ボス部１と樹脂製タンク本体４のボス部挿通孔４ａとの間が液密に形成される。なお、ボス部１の短管状部１ａには図示しないオイルパイプ先端がコネクタを介して螺着締結される。
【０００８】
【発明の作用・効果】
本発明のタンク内蔵型オイルクーラの取付け構造は、ボス部１の短管状部１ａにその半径方向から板バネ３の逆Ｕ字状欠切部３ａが嵌入されて、板バネ３の両脚部外面が樹脂製タンク本体４の外面と鍔部１ｃとに圧接挟持される。それにより、オイルクーラ本体２と樹脂製タンク本体４とをいわゆるワンタッチで締結し得る。しかも、ボス部１の鍔部１ｃと樹脂製タンク本体４外表面との間隔は一定であるから、板バネ３の締結力を一定に保持し、その締結の信頼性を高める。そして、板バネ３の弾発力によりオイルクーラ本体２と樹脂製タンク本体４との液密性を保持する。
しかも、板バネ (3) に抜け止め用の段差部 (3b) が凹陥して形成され、その板バネ (3) の両脚部外面が前記タンク本体 (4) の外面と前記鍔部 (1c) とに圧接挟持されると共に、前記ボス部 (1) の前記鍔部 (1c) の縁が前記板バネ (3) の前記段差部 (3b) よりも前記脚部の先端側に位置しているから、板バネの弾発力が強く且つ、板バネに外力が加わっても、不用意にそれが外れて、タンク内部のオイルが漏れだすおそれがない。そして、取付け易く構造の簡単なオイルクーラの取付け構造を構成できる。
【図面の簡単な説明】
【図１】本発明のタンク内蔵型オイルクーラの取付け構造の分解斜視図。
【図２】図１における板バネ３の斜視図。
【図３】同取付け構造の縦断面図。
【図４】従来型オイルクーラの取付け構造の縦断面図。
【図５】従来型オイルクーラの取付け構造の他の例を示す縦断面図。
【図６】同取付け構造に用いられる皿バネ７の斜視図。
【符号の説明】
１ ボス部
１ａ 短管状部
１ｂ フランジ部
１ｃ 鍔部
２ オイルクーラ本体
３ 板バネ
３ａ 逆Ｕ字状欠切部
３ｂ 段差部
４ 樹脂製タンク本体
４ａ ボス部挿通孔
５ Ｏリング
６ ワッシャ
７ 皿バネ
８ ナット
９ チューブプレート
10 チューブ[0001]
BACKGROUND OF THE INVENTION
The present invention mainly relates to a mounting structure for an automotive oil cooler that is built in a tank of an automotive radiator and is mounted on the tank wall surface.
[0002]
[Prior art]
For example, as shown in FIG. 4, this type of oil cooler is installed in a resin tank body 4 on the lower side of an unillustrated automobile radiator, and is attached and fixed to the wall surface of the resin tank body 4. is there. The oil cooler body 2 in this example is composed of a double cylinder, both end surfaces between the double cylinders are closed, and the oil to be cooled is circulated between them, and cooling water is supplied to the inner and outer peripheral surfaces thereof. It is to be distributed. That is, oil circulates from one end to the other end between the double cylinders of the oil cooler main body 2, and heat exchange is performed between the oil and the cooling water. The cooling water flows from the upper tank (not shown) through the tube 10 into the lower resin tank body 4 and returns to the engine through an outlet pipe (not shown). The resin tank body 4 is formed of a synthetic resin material for weight reduction and the like.
[0003]
The oil cooler main body 2 is fastened and fixed to the resin tank main body 4 via a boss portion 1 projecting from the oil inlet / outlet as shown in FIG. This boss portion 1 has a short tubular portion 1a and a flange portion 1b provided at the base portion thereof, and has an annular groove on an end surface of the flange portion 1b on the short tubular portion 1a side, and an O-ring 5 for sealing there. Is inserted. Then, the oil cooler body 2 is inserted into the resin tank body 4, and the short tubular portion 1 a of the boss portion 1 is inserted into the mounting hole of the resin tank body 4 from the inner surface side. Then, the oil cooler body 2 is fastened and fixed to the resin tank body 4 via the washer 6 and the nut 8. At this time, the O-ring 5 forms a liquid-tight space between the opening of the resin tank body 4 and the boss portion 1.
Next, FIG. 5 shows the oil cooler main body 2 fastened and fixed to the resin tank main body 4 by using the disc spring 7 shown in FIG. 6 instead of the nut 8, and the applicant himself as Japanese Utility Model No. 63-41537. Has already proposed. In this oil cooler mounting structure, the disc spring 7 is inserted from the tip of the short tubular portion 1 a in the axial direction, and the end face thereof is pressed against the washer 6.
[0004]
[Problems to be solved by the invention]
The fastening structure shown in FIG. 4 has a drawback that the mounting is troublesome because the nut 8 is screwed and rotated from the tip of the short tubular portion 1a. On the other hand, in the fastening structure shown in FIG. 5, it is sufficient to insert the disc spring 7 from the tip of the short tubular portion 1a and press-fit until the tip hits. Therefore, although the attachment itself is relatively easy, there is a drawback that it is difficult to always keep the spring pressure of the disc spring 7 constant. That is, when the base end surface of the disc spring 7 comes into contact with the washer 6, the claw portion of the disc spring 7 is locked to the external screw of the short tubular portion 1a, but the locking method is not necessarily uniform. . Therefore, there is a possibility that the fastening force by the disc spring 7 may vary.
Therefore, the present invention has an object to provide a highly stable oil cooler mounting structure that can be easily mounted and the fastening force thereof can be kept constant, and has the following configuration to solve the problem.
[0005]
[Means for Solving the Problems]
The present invention has a short tubular portion (1a) in which an outer thread for connecting a connector is formed on the outer periphery, and a flange portion (1b) is integrally projected on one axial outer periphery of the short tubular portion (1a). A boss portion (1) in which one end surface of the flange portion (1b) is liquid-tightly joined to an edge of the oil inlet / outlet of the oil cooler body (2), and an intermediate portion in the axial direction of the short tubular portion (1a). A flange (1c) for locking the leaf spring slightly protruding on the outer periphery,
An inverted U-shaped notch formed of an elastic metal plate whose longitudinal section is bent in an inverted U shape, and having an opening larger than the diameter of the short tubular portion (1a) from the top of the inverted U shape to the center. (3a) is formed , and a leaf spring ( 3b) formed on one plane of the base portion of the inverted U-shaped folded bent portion with a stepped portion (3b) for retaining is recessed toward the other plane. ) When,
The short tubular portion (1a) is inserted into the boss portion insertion hole (4a) of the resin tank body (4), and the other end surface of the flange portion (1b) is inserted into the insertion hole (4a). The inverted U-shaped notch (3a) of the leaf spring (3) is inserted into the short tubular portion (1a) from the radial direction by pressure contact with the hole edge through a sealing O-ring (5). is, in its leaf spring (3) legs outer surface is the outer surface and nipped the in the flange portion (1c) of the tank body (4) of Rutotomoni, the boss portion and the flange portion of (1) (1c) This is a mounting structure of a tank built-in type oil cooler in which the edge of the plate spring (3) is located on the distal end side of the leg portion with respect to the stepped portion (3b) .
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is an exploded perspective view of the mounting structure of the oil cooler, FIG. 2 is a perspective view of the leaf spring 3, and FIG. 3 is a longitudinal sectional view of the mounting structure.
The oil cooler main body 2 in this example is of a double tube type, similar to that of the conventional type, and an inlet / outlet of an oil cooler (not shown) is provided on the outer surface of both ends in the longitudinal direction, and a pair of bosses are provided at the opening of the inlet / outlet. The part 1 is fixed in a liquid-tight manner by brazing or soldering. The boss portion 1 is composed of a short tubular portion 1a and a flange portion 1b provided at the base thereof, and an annular groove for fitting an O-ring is formed on the end surface of the flange portion 1b on the short tubular portion 1a side. As shown in FIGS. 1 and 3, the short tubular portion 1a has a slightly protruding flange portion 1c at an intermediate portion near the flange portion 1b. And the external thread is formed in the short tubular part 1a outer periphery of the front end side from the collar part 1c.
[0007]
Next, the leaf spring 3 bends the spring steel in an inverted U shape, and an inverted U-shaped notch 3a is formed from the top to the middle of the bent portion, and is received at the base of the bent portion. A step portion 3b is provided.
As shown in FIGS. 1 and 3, the oil cooler main body 2 is inserted into the resin tank main body 4, and the boss portion 1 passes through the boss portion insertion hole 4 a of the resin tank main body 4. At this time, the O-ring 5 is inserted into the annular groove of the flange portion 1b. Then, the washer 6 is inserted from the distal end side of the short tubular portion 1 a, and then the reverse U-shaped notch 3 a is inserted between the flange portion 1 c and the washer 6 with both legs of the leaf spring 3 closed. Is done. Next, when the leaf spring 3 is released in a free state as shown in FIG. 3, the outer surfaces of both leg portions of the leaf spring 3 are pressed against and held between the outer surface of the resin tank body 4 and the flange 1c, and the elastic force of the oil cooler body 2 Is pressed to the outer surface side of the resin tank body 4. Then, the presence of the O-ring 5 forms a liquid-tight space between the boss portion 1 and the boss portion insertion hole 4 a of the resin tank body 4. An oil pipe tip (not shown) is screwed to the short tubular portion 1a of the boss portion 1 via a connector.
[0008]
[Operation and effect of the invention]
In the mounting structure of the oil cooler with a built-in tank of the present invention, the reverse U-shaped notch 3a of the leaf spring 3 is fitted into the short tubular portion 1a of the boss portion 1 from the radial direction, and the outer surfaces of both leg portions of the leaf spring 3 are inserted. Is pressed between the outer surface of the resin tank body 4 and the flange 1c. Thereby, the oil cooler main body 2 and the resin tank main body 4 can be fastened by so-called one-touch. Moreover, since the distance between the flange portion 1c of the boss portion 1 and the outer surface of the resin tank body 4 is constant, the fastening force of the leaf spring 3 is kept constant, and the fastening reliability is increased. And the liquid-tightness of the oil cooler main body 2 and the resin tank main body 4 is maintained by the elastic force of the leaf spring 3.
Moreover, the leaf spring (3) is formed with a stepped portion (3b) for retaining it, and the outer surfaces of both legs of the leaf spring (3) are the outer surface of the tank body (4) and the flange portion (1c). And the edge of the flange portion (1c) of the boss portion (1) is positioned closer to the distal end side of the leg portion than the step portion (3b) of the leaf spring (3) . Therefore, even if the spring force of the leaf spring is strong and an external force is applied to the leaf spring, there is no risk that the oil in the tank leaks out carelessly. An oil cooler mounting structure that is easy to mount and simple in structure can be configured.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of a mounting structure of a tank built-in type oil cooler according to the present invention.
FIG. 2 is a perspective view of a leaf spring 3 in FIG.
FIG. 3 is a longitudinal sectional view of the mounting structure.
FIG. 4 is a longitudinal sectional view of a conventional oil cooler mounting structure.
FIG. 5 is a longitudinal sectional view showing another example of a conventional oil cooler mounting structure.
FIG. 6 is a perspective view of a disc spring 7 used in the mounting structure.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Boss part 1a Short tubular part 1b Flange part 1c Eave part 2 Oil cooler main body 3 Leaf spring 3a Reverse U-shaped notch 3b Step part 4 Resin tank main body 4a Boss part insertion hole 5 O ring 6 Washer 7 Disc spring 8 Nut 9 Tube plate
10 tubes

Claims (1)

外周にコネクタ接続用の外ネジが形成された短管状部(1a)を有し、その短管状部(1a)の軸方向一端外周にフランジ部(1b)が一体に突設され、そのフランジ部(1b)の一端面がオイルクーラ本体(2) のオイル出入口の孔縁部に液密に接合されたボス部(1) と、
前記短管状部(1a)の軸方向中間部外周にわずかに突設された板バネ係止用の鍔部(1c)と、
縦断面が逆Ｕ字状に曲折された弾性金属板よりなり、その逆Ｕ字状の頂部から中央部に前記短管状部(1a)の直径より大なる開口からなる逆Ｕ字状欠切部(3a)が形成され、その逆Ｕ字状折返し曲折部の根本部の一方の平面に、抜け止め用の段差部 (3b) が他方の平面の側へ凹陥して形成された板バネ(3) と、
を具備し、前記短管状部(1a)が樹脂製タンク本体(4) のボス部挿通孔(4a)に挿通されると共に、前記フランジ部(1b)の他端面がその挿通孔(4a)の孔縁部にシール用のＯリング(5) を介して圧接され、前記短管状部(1a)にその半径方向から前記板バネ(3) の前記逆Ｕ字状欠切部(3a)が嵌入されて、その板バネ(3) の両脚部外面が前記タンク本体(4) の外面と前記鍔部(1c)とに圧接挟持されると共に、前記ボス部 (1) の前記鍔部 (1c) の縁が前記板バネ (3) の前記段差部 (3b) よりも前記脚部の先端側に位置したタンク内蔵型オイルクーラの取付け構造。It has a short tubular portion (1a) formed with an external thread for connector connection on the outer periphery, and a flange portion (1b) is integrally projected on the outer periphery of one end in the axial direction of the short tubular portion (1a). A boss portion (1) in which one end surface of (1b) is liquid-tightly joined to the edge of the oil inlet / outlet port of the oil cooler body (2);
A leaf spring locking collar (1c) slightly projectingly provided on the outer periphery of the intermediate portion in the axial direction of the short tubular portion (1a),
An inverted U-shaped notch formed of an elastic metal plate whose longitudinal section is bent in an inverted U shape, and having an opening larger than the diameter of the short tubular portion (1a) from the top of the inverted U shape to the center. (3a) is formed , and a leaf spring ( 3b) formed on one plane of the base portion of the inverted U-shaped folded bent portion with a stepped portion (3b) for retaining is recessed toward the other plane. ) When,
The short tubular portion (1a) is inserted into the boss portion insertion hole (4a) of the resin tank body (4), and the other end surface of the flange portion (1b) is inserted into the insertion hole (4a). The inverted U-shaped notch (3a) of the leaf spring (3) is inserted into the short tubular portion (1a) from the radial direction by pressure contact with the hole edge through a sealing O-ring (5). is, in its leaf spring (3) legs outer surface is the outer surface and nipped the in the flange portion (1c) of the tank body (4) of Rutotomoni, the boss portion and the flange portion of (1) (1c) A tank built-in type oil cooler mounting structure in which the edge of the plate spring (3) is positioned closer to the distal end side of the leg portion than the stepped portion (3b ) of the leaf spring (3) .
JP33496296A 1996-11-29 1996-11-29 Installation structure of oil cooler with built-in tank Expired - Fee Related JP3806824B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP33496296A JP3806824B2 (en) 1996-11-29 1996-11-29 Installation structure of oil cooler with built-in tank

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Application Number Priority Date Filing Date Title
JP33496296A JP3806824B2 (en) 1996-11-29 1996-11-29 Installation structure of oil cooler with built-in tank

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JPH10160386A JPH10160386A (en) 1998-06-19
JP3806824B2 true JP3806824B2 (en) 2006-08-09

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20040075213A (en) * 2003-02-20 2004-08-27 한라공조주식회사 Radiator with built-in oil cooler
JP5600200B2 (en) * 2013-10-24 2014-10-01 富士フイルム株式会社 Endoscope operation unit
JP6942678B2 (en) * 2018-09-21 2021-09-29 日立建機株式会社 Work machine

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