JP6959156B2 - Connection structure of heat exchanger tank - Google Patents

Connection structure of heat exchanger tank Download PDF

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JP6959156B2
JP6959156B2 JP2018012412A JP2018012412A JP6959156B2 JP 6959156 B2 JP6959156 B2 JP 6959156B2 JP 2018012412 A JP2018012412 A JP 2018012412A JP 2018012412 A JP2018012412 A JP 2018012412A JP 6959156 B2 JP6959156 B2 JP 6959156B2
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flange portion
tank body
plate
connection structure
circumferential direction
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JP2019132442A (en
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喜彦 佐々木
聡 大友
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T.RAD CO., L T D.
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Description

本発明は、タンク本体とその開口端を、シールリングを介して被嵌するプレートとの接続構造に関する。 The present invention relates to a connection structure between a tank body and an open end thereof with a plate to be fitted via a seal ring.

下記特許文献１に記載の締め付け結合装置は、タンク本体とその開口端を被嵌するヘッダプレート（特許文献１の第２の部材（管板）に相当）とを具備し、タンク本体はその開口端の外周がフランジ状に突設される。そして、ヘッダプレートの環状溝に、そのフランジ部がパッキンを介して嵌入される。そのヘッダプレートは、環状溝の外周にその端縁から所定距離離れた位置にフランジ部に平行な多数のスリットが間欠的に穿設され、そのスリットに隣接する縁部がフランジに平行に塑性変形されて、平面視Ｕ字状の係止爪が形成される。そして、その係止爪のスリット側の端縁がフランジ部の平面に係止されるものである。 The tightening coupling device described in Patent Document 1 below includes a tank body and a header plate (corresponding to a second member (tube plate) of Patent Document 1) for fitting the open end thereof, and the tank body has the opening. The outer circumference of the end is projected like a flange. Then, the flange portion is fitted into the annular groove of the header plate via the packing. The header plate is intermittently provided with a large number of slits parallel to the flange at a position separated from the edge of the annular groove by a predetermined distance, and the edge adjacent to the slit is plastically deformed parallel to the flange. Therefore, a U-shaped locking claw in a plan view is formed. Then, the edge of the locking claw on the slit side is locked to the flat surface of the flange portion.

その応用例として、図９〜図１１に示す接続構造がある 。
この応用例は、上記ヘッダプレートの代わりに、端部がタンク本体２ａの外周に被嵌する筒状のプレート３とからなるケーシングを有する。そして、タンク本体のフランジ部４の側面に、周方向に細長い凹陥部２０を間欠的に形成しておく。さらに、ケーシングを構成するプレートの端部にスリット５を間欠的に設け、その各スリットに隣接する端部をフランジの突設方向と逆方向に塑性変形して係止爪６を形成し、その係止爪６をタンク本体２ａの凹陥部２０に圧入したものである。 As an application example, there are connection structures shown in FIGS. 9 to 11.
In this application example, instead of the header plate, a casing having a cylindrical plate 3 whose end is fitted on the outer periphery of the tank body 2a is provided. Then, a recessed portion 20 elongated in the circumferential direction is intermittently formed on the side surface of the flange portion 4 of the tank body. Further, slits 5 are intermittently provided at the ends of the plates constituting the casing, and the ends adjacent to the slits are plastically deformed in the direction opposite to the projecting direction of the flange to form the locking claws 6. The locking claw 6 is press-fitted into the recess 20 of the tank body 2a.

特公昭５８−４２０６号公報Special Publication No. 58-4206 米国特許第４８８１５９５号公報U.S. Pat. No. 4,881,595

特許文献１に記載の発明の応用例である図９〜図１１に示す接続構造のケーシングを構成する筒状のプレート３と、タンク本体２ａとの場合には、係止爪６を凹陥部２０内に圧入する時、凹陥部２０の長手方向の両端部に形成されたＲ曲面２１に係止爪の端部が乗り上り、タンクの内圧および振動に対して、そこに応力集中が発生し、疲労亀裂２２が生じるおそれがある。 In the case of the tubular plate 3 constituting the casing of the connection structure shown in FIGS. 9 to 11, which is an application example of the invention described in Patent Document 1, and the tank body 2a, the locking claw 6 is recessed 20. When press-fitting into the inside, the ends of the locking claws ride on the R curved surfaces 21 formed at both ends in the longitudinal direction of the recessed portion 20, and stress concentration occurs there with respect to the internal pressure and vibration of the tank. Fatigue cracks 22 may occur.

そこで、本発明は、タンクに内圧および振動が作用しても係止爪に亀裂が生じ難く、よって耐圧性および耐震性が高く、信頼性の高い接続構造を提供することを課題とする。 Therefore, it is an object of the present invention to provide a highly reliable connection structure having high pressure resistance and earthquake resistance because cracks are unlikely to occur in the locking claws even when internal pressure and vibration act on the tank.

請求項１に記載の本発明は、内部に第１の流体が流通する箱型に形成され、その箱の底部が開口されて開口端１が形成されており、その開口端１の外面側にフランジ部４が突設されているタンク本体２と、
前記タンク本体２のフランジ部４がシールリング１０を介して嵌着する環状溝９ａを内面側に有し、外面側の端部の外周に、周方向に離間して間欠的に複数のスリット５が形成されたプレート３と、を具備し、
前記プレート３の各スリット５に隣接する端部が、前記フランジ部４の突設方向と逆方向に且つ、フランジ部４の周方向に平行な弧状に塑性変形されて、複数の係止爪６が形成されており、その係止爪６の前記スリット５側の弧状縁６ａが前記フランジ部４の係止面４ａに係止されている熱交換器用タンクの接続構造において、
タンク本体２には、前記フランジ部４の前記外面側に、そのフランジ部４に平行な溝部７を介して、フランジ部４に平行で前記周方向に間欠的に複数の突設部８が形成されおり、その周方向に対向する突設部８、８の端部間に前記各スリット５に隣接する端部が圧入されており、そこに塑性変形された複数の前記係止爪６を有し、前記スリット５の前記周方向の長さは、前記溝部７の前記周方向長さより短く形成された熱交換器用タンクの接続構造である。 The present invention according to claim 1 is formed in a box shape through which a first fluid flows, and the bottom of the box is opened to form an open end 1 on the outer surface side of the open end 1. The tank body 2 on which the flange portion 4 is projected and the tank body 2
The flange portion 4 of the tank body 2 has an annular groove 9a on the inner surface side to which the flange portion 4 is fitted via the seal ring 10, and a plurality of slits 5 are intermittently spaced apart from each other in the circumferential direction on the outer periphery of the end portion on the outer surface side. The plate 3 on which the
The end portions of the plate 3 adjacent to each slit 5 are plastically deformed in an arc shape opposite to the projecting direction of the flange portion 4 and parallel to the circumferential direction of the flange portion 4, and a plurality of locking claws 6 are formed. Is formed, and in the connection structure of the heat exchanger tank in which the arcuate edge 6a of the locking claw 6 on the slit 5 side is locked to the locking surface 4a of the flange portion 4.
In the tank body 2, a plurality of projecting portions 8 are formed on the outer surface side of the flange portion 4 intermittently in the circumferential direction in parallel with the flange portion 4 via a groove portion 7 parallel to the flange portion 4. An end portion adjacent to each of the slits 5 is press-fitted between the ends of the projecting portions 8 and 8 facing each other in the circumferential direction, and the plurality of plastically deformed locking claws 6 are provided therein. The circumferential length of the slit 5 is shorter than the circumferential length of the groove 7, and is a connection structure for the heat exchanger tank.

請求項２に記載の本発明は、前記溝部７がタンク本体２の外周の全周に渡って形成された請求項１に記載の熱交換器用タンクの接続構造である。 The present invention according to claim 2 is the connection structure for the heat exchanger tank according to claim 1, wherein the groove portion 7 is formed over the entire circumference of the outer circumference of the tank body 2.

本発明の接続構造は、タンク本体２に溝部７が形成されていることにより、従来の図９〜図１１に示すような構造のフランジ側面に設けたレーストラック状の凹陥部２０に係止爪を圧入する場合のように、凹陥部の長手方向の端のＲ曲面２１に係止爪の縁が乗り上げるおそれがない。それゆえ、乗り上げに伴う係止爪の端部に生じる干渉、ならびに流体圧および振動により生じる係止爪の根元の応力集中を防止でき、信頼性の高い接続構造を提供できる。
さらに、溝部７をタンク本体２の外周の全周に渡るものとした場合には、その溝部７を切削加工によって形成する場合、加工を断続することなく連続して加工することができるので、タンク本体２の生産性が向上する。 In the connection structure of the present invention, since the groove portion 7 is formed in the tank body 2, the locking claws are formed in the race track-shaped recessed portion 20 provided on the side surface of the flange having the conventional structure as shown in FIGS. 9 to 11. There is no possibility that the edge of the locking claw will ride on the R curved surface 21 at the end in the longitudinal direction of the recessed portion, as in the case of press-fitting. Therefore, it is possible to prevent interference caused at the end of the locking claw due to riding and stress concentration at the base of the locking claw caused by fluid pressure and vibration, and it is possible to provide a highly reliable connection structure.
Further, when the groove portion 7 extends over the entire circumference of the outer circumference of the tank body 2, when the groove portion 7 is formed by cutting, the processing can be continuously performed without interruption, so that the tank can be processed. The productivity of the main body 2 is improved.

本発明の熱交換器用タンクの接続構造の要部斜視図。The main part perspective view of the connection structure of the heat exchanger tank of this invention. 同構造に用いられるタンク本体２の要部斜視図。The main part perspective view of the tank body 2 used for the same structure. 同タンク本体２の要部正面図、及びタンク本体２の端部にプレート３を被嵌した状態を示す要部正面図。A front view of the main part of the tank body 2 and a front view of the main part showing a state in which the plate 3 is fitted to the end of the tank body 2. 同タンク本体２とプレート３との接続部の要部斜視図であって、（Ａ）はその係止爪６の変形前の状態を示し、（Ｂ）は同変形後の状態を示す。It is a perspective view of the main part of the connection part between the tank main body 2 and the plate 3, (A) shows the state before the deformation of the locking claw 6, and (B) shows the state after the deformation. （Ａ）は、タンク本体２をプレート３に被嵌する前の状態を示す縦断面図、（Ｂ）は同被嵌後に係止爪６を塑性変形した状態を示す縦断面図。(A) is a vertical cross-sectional view showing a state before the tank body 2 is fitted to the plate 3, and (B) is a vertical cross-sectional view showing a state in which the locking claw 6 is plastically deformed after the fitting. 同接続構造を有する熱交換器の全体を示す分解斜視図。An exploded perspective view showing the entire heat exchanger having the same connection structure. 同組立て状態を示す斜視図。The perspective view which shows the assembled state. 本発明の第２実施例の熱交換器用タンクの接続構造の要部断面図。FIG. 5 is a cross-sectional view of a main part of a connection structure of a heat exchanger tank according to a second embodiment of the present invention. 従来例の応用例の接続構造に用いるタンク本体２ａの要部斜視図。FIG. 3 is a perspective view of a main part of the tank body 2a used for the connection structure of the application example of the conventional example. 同タンク本体２ａにプレート本体３ａを被嵌した状態を示す正面説明図。The front explanatory view which shows the state which the plate main body 3a is fitted to the tank main body 2a. 同要部斜視図。A perspective view of the same main part.

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。
この発明は、熱交換器の一例としてチャージエアクーラに適用したタンク本体と、プレートとの接続構造である。即ち、図６に示す如く、偏平チューブ１２の積層体により熱交換器のコア１３が形成され、そのコア１３の外周に、筒状に形成したプレート３からなるケーシングを被嵌し、そのプレート３の排ガス（第１の流体）の流通方向の両端開口の内面に一対のブラケット９を取付け、ブラケット９とプレート３との間に環状溝９ａを形成する。そして、図５に示す如く、その環状溝９ａにシールリング１０を介してタンク本体２の開口端１に突設したフランジ部４を嵌着し、プレート３の端部とタンク本体２のフランジ部４との間をカシメによって接続したものである。 Next, an embodiment of the present invention will be described with reference to the drawings.
The present invention is a connection structure between a plate and a tank body applied to a charge air cooler as an example of a heat exchanger. That is, as shown in FIG. 6, a core 13 of a heat exchanger is formed by a laminated body of flat tubes 12, and a casing made of a cylindrically formed plate 3 is fitted on the outer periphery of the core 13, and the plate 3 is fitted. A pair of brackets 9 are attached to the inner surfaces of the openings at both ends in the flow direction of the exhaust gas (first fluid), and an annular groove 9a is formed between the brackets 9 and the plate 3. Then, as shown in FIG. 5, a flange portion 4 projecting from the opening end 1 of the tank body 2 is fitted into the annular groove 9a via the seal ring 10, and the end portion of the plate 3 and the flange portion of the tank body 2 are fitted. It is connected to No. 4 by caulking.

即ち、本発明の接続構造のプレート３は、その端部内周にブラケット９が接続されて、そのプレートとブラケット９とにより環状溝９ａを形成する。そして、その環状溝９ａにタンク本体２のフランジ部４が圧入される。その状態で、プレート３の開口端に設けたスリット５（図１）に隣接する縁部をフランジ部４の突出方向とは逆向きに塑性変形して係止爪６を形成し、その係止爪６の弧状縁６ａをフランジ部４の係止面４ａに係止させるものである。 That is, in the plate 3 having the connection structure of the present invention, the bracket 9 is connected to the inner circumference of the end portion thereof, and the plate and the bracket 9 form an annular groove 9a. Then, the flange portion 4 of the tank body 2 is press-fitted into the annular groove 9a. In that state, the edge portion adjacent to the slit 5 (FIG. 1) provided at the open end of the plate 3 is plastically deformed in the direction opposite to the protruding direction of the flange portion 4 to form the locking claw 6, and the locking claw 6 is formed. The arcuate edge 6a of the claw 6 is locked to the locking surface 4a of the flange portion 4.

タンク本体２は、図２及び図３（Ａ）に示す如く、箱型に形成されており、その箱の底部が開口している開口端１を有している。その開口端１の外周に環状のフランジ部４が突設されている。このフランジ部４は、図２において下面側にシール面４ｂが形成され、上面側に係止爪６のための係止面４ａが形成されている。さらに、係止面４ａに対向し、フランジ部４に平行な突設部８が周方向に間欠的に一体形成されている。各突設部８の長手方向の端部８ａは、外側に湾曲する水平方向の断面が弧状に形成されている。なお、この端部８ａは、傾斜面又は凹陥した曲面であってもよい。各突設部８とフランジ部４との間には、溝部７が環状に形成されている。 As shown in FIGS. 2 and 3A, the tank body 2 is formed in a box shape and has an open end 1 in which the bottom of the box is open. An annular flange portion 4 is projected from the outer periphery of the opening end 1. In FIG. 2, the flange portion 4 has a sealing surface 4b formed on the lower surface side and a locking surface 4a for the locking claw 6 formed on the upper surface side. Further, a projecting portion 8 facing the locking surface 4a and parallel to the flange portion 4 is intermittently integrally formed in the circumferential direction. The longitudinal end 8a of each projecting portion 8 has an arcuate horizontal cross section that curves outward. The end portion 8a may be an inclined surface or a concave curved surface. A groove portion 7 is formed in an annular shape between each of the projecting portions 8 and the flange portion 4.

次に、プレート３は、図６に示す如く、断面コ字状のプレート本体３ａと、それに被嵌される側蓋３ｂにより、筒状のケーシングを構成する。そのプレート３の図において上下両端部には、間欠的にスリット５が周方向に形成されている。このスリット５は、図４（Ａ）に示す如く、プレート３の両端縁に近接した位置に穿設されている。 Next, as shown in FIG. 6, the plate 3 constitutes a cylindrical casing by a plate body 3a having a U-shaped cross section and a side lid 3b fitted thereto. In the figure of the plate 3, slits 5 are intermittently formed in the circumferential direction at both upper and lower ends. As shown in FIG. 4A, the slit 5 is formed at a position close to both end edges of the plate 3.

そして、図示しないカシメ機によって、図４（Ｂ）の如く、スリット５に隣接する端部が、タンク本体２のフランジ部４の突出方向と逆方向に塑性変形されて、平面視で略円弧状の係止爪６が形成される。カシメ機は、一例として、プレート３の各スリットに隣接した位置に、複数の爪成形部が間欠的に突設されたプレス機からなる。そしてカシメ機をフランジ部４の突設方向と逆方向に移動し、各スリットに隣接する縁部を押し込み、同時に各係止爪６を成形する。このとき、各スリット５に隣接する縁部は、各突設部８の端部８ａ、８ａ間に圧入される。この時、一対の対向する端部８ａ、８ａが係止爪６の成形のガイドとなり、係止爪が正確に形成される。 Then, as shown in FIG. 4B, the end portion adjacent to the slit 5 is plastically deformed in the direction opposite to the protruding direction of the flange portion 4 of the tank body 2 by a caulking machine (not shown) to form a substantially arc shape in a plan view. Locking claw 6 is formed. As an example, the caulking machine comprises a press machine in which a plurality of claw forming portions are intermittently projected at positions adjacent to each slit of the plate 3. Then, the caulking machine is moved in the direction opposite to the projecting direction of the flange portion 4, the edge portions adjacent to the slits are pushed in, and at the same time, each locking claw 6 is formed. At this time, the edge portion adjacent to each slit 5 is press-fitted between the end portions 8a and 8a of each protruding portion 8. At this time, the pair of opposite end portions 8a, 8a serve as a guide for forming the locking claw 6, and the locking claw is accurately formed.

そして、その係止爪６の弧状縁６ａがフランジ部４の係止面４ａに被着される。
この時、係止面４ａと突設部８との間には溝部７が形成されている。
なお、係止爪６の形成に当たっては、図５（Ｂ）に示す如く、フランジ部４をプレート３とブラケット９との環状溝９ａにシールリング１０を介して圧入しつつ、図示しない、カシメ機をプレート３の外面側から内面側に移動して、スリット５に隣接する縁部を平面視で弧状に塑性変形する。 Then, the arcuate edge 6a of the locking claw 6 is adhered to the locking surface 4a of the flange portion 4.
At this time, a groove portion 7 is formed between the locking surface 4a and the projecting portion 8.
In forming the locking claw 6, as shown in FIG. 5B, a caulking machine (not shown) is used while press-fitting the flange portion 4 into the annular groove 9a between the plate 3 and the bracket 9 via the seal ring 10. Is moved from the outer surface side to the inner surface side of the plate 3, and the edge portion adjacent to the slit 5 is plastically deformed in an arc shape in a plan view.

次に、この接続構造を有する熱交換器について説明する。この熱交換器は、図６に示す如く、偏平チューブ１２の積層体によりコア１３が形成されている。その偏平チューブは、一対の溝状に形成されたプレートの嵌着体からなる。そして、その長手方向の両端が厚み方向の外側に膨出して拡開部２３を形成する。各偏平チューブ１２の外面側には仕切部１６とディンプル１７とが形成されている。
次に、コア１３の外周は、プレート本体３ａと側蓋３ｂとからなるプレート３が被嵌される。そのプレート３は全体が筒状に形成されてケーシングを構成する。 Next, a heat exchanger having this connection structure will be described. In this heat exchanger, as shown in FIG. 6, the core 13 is formed by a laminated body of flat tubes 12. The flat tube is composed of a pair of groove-shaped plate fittings. Then, both ends in the longitudinal direction bulge outward in the thickness direction to form the expansion portion 23. A partition portion 16 and a dimple 17 are formed on the outer surface side of each flat tube 12.
Next, the outer circumference of the core 13 is fitted with a plate 3 composed of a plate body 3a and a side lid 3b. The plate 3 is formed in a tubular shape as a whole to form a casing.

そして、各部品を組立て、各部品間を一体的に高温の炉内でろう付する。
次いで、図５（Ａ）、図５（Ｂ）に示す如く、プレート３とブラケット９との間にシールリング１０を嵌着する。次いで、タンク本体２のフランジ部４を環状溝９ａ内に圧入すると共に、シールリング１０を圧縮する方向に外力を加えた状態で、カシメ機をタンク本体２の内方向へ移動して係止爪６を形成する。即ち、プレート３の各スリット５に隣接する縁部をフランジ部４の突設方向と逆方向に外力を加えて、そのフランジ部４に平行に係止爪６を形成する。この時、係止爪６は図１に示す如く、略円弧状に形成される。また、その係止爪６は、タンク本体２の外周に周方向に間欠的に一体形成される。
このようにして、図７に示す熱交換器を形成する。 Then, each part is assembled and brazed integrally between the parts in a high temperature furnace.
Next, as shown in FIGS. 5A and 5B, the seal ring 10 is fitted between the plate 3 and the bracket 9. Next, with the flange portion 4 of the tank body 2 press-fitted into the annular groove 9a and an external force applied in the direction of compressing the seal ring 10, the caulking machine is moved inward of the tank body 2 to lock the claws. Form 6. That is, an external force is applied to the edge portion of the plate 3 adjacent to each slit 5 in the direction opposite to the projecting direction of the flange portion 4, and the locking claw 6 is formed parallel to the flange portion 4. At this time, the locking claw 6 is formed in a substantially arc shape as shown in FIG. Further, the locking claw 6 is intermittently integrally formed on the outer periphery of the tank body 2 in the circumferential direction.
In this way, the heat exchanger shown in FIG. 7 is formed.

上下一対の冷却水パイプ１４の一方から冷却水１８（第２の流体）を流入し、コア１３の各偏平チューブ１２の外面側に冷却水１８を供給する。その冷却水１８は、図６において仕切部１６の一方側から他方側にＵ字状に流通する。
また、図７において、一方の排ガスパイプ１５から他方の排ガスパイプ１５に排ガス１９が導かれ、それが各コア１３の各偏平チューブ１２内を流通し、冷却水１８と排ガス１９との間に熱交換が行われる。 The cooling water 18 (second fluid) flows in from one of the pair of upper and lower cooling water pipes 14, and the cooling water 18 is supplied to the outer surface side of each flat tube 12 of the core 13. The cooling water 18 flows in a U shape from one side to the other side of the partition portion 16 in FIG.
Further, in FIG. 7, the exhaust gas 19 is guided from one exhaust gas pipe 15 to the other exhaust gas pipe 15, and the exhaust gas 19 circulates in each flat tube 12 of each core 13 and heats between the cooling water 18 and the exhaust gas 19. The exchange will take place.

本実施例の特徴とするところは、タンク本体２に溝部７が形成されていることである。それにより、従来の図９〜図１１に示すような構造のフランジ側面に設けたレーストラック状の凹陥部２０に係止爪を圧入する場合のように、凹陥部の長手方向の端のＲ曲面２１に係止爪の縁が乗り上げるおそれがない。ゆえに、乗り上げに伴う係止爪の端部に生じる亀裂、および干渉、ならびに流体圧および振動により生じる係止爪の根元の応力集中を防止でき、信頼性の高い接続構造を提供できる。
さらに、溝部７はタンク本体２の外周の全周に渡るものとしたので、その溝部７を切削加工によって形成する場合、加工を断続することなく連続して加工することが可能となり、タンク本体２の生産性が向上する。 A feature of this embodiment is that a groove 7 is formed in the tank body 2. As a result, as in the case where the locking claw is press-fitted into the race track-shaped recessed portion 20 provided on the side surface of the flange having the conventional structure as shown in FIGS. 9 to 11, the R curved surface at the end in the longitudinal direction of the recessed portion. There is no risk that the edge of the locking claw will ride on 21. Therefore, it is possible to prevent cracks and interference generated at the end of the locking claw due to riding, and stress concentration at the base of the locking claw caused by fluid pressure and vibration, and it is possible to provide a highly reliable connection structure.
Further, since the groove portion 7 extends over the entire circumference of the outer circumference of the tank body 2, when the groove portion 7 is formed by cutting, it is possible to continuously process the groove portion 7 without interruption, and the tank body 2 Productivity is improved.

次に、図８は本発明の第２実施例の要部断面図である。
この熱交換器用タンクの接続構造が、前記第１実施例と異なる点は、プレート３がタンク本体２の開口端を被嵌するヘッダプレートであり、そのチューブ挿通孔にチューブ２４の端部が挿通され、その挿通部がろう付されるものである。
この実施例では、ヘッダプレートを構成するプレート３の外周縁が立ち上げられた側壁部を有する。その側壁部の端部に係止爪６が設けられている。 Next, FIG. 8 is a cross-sectional view of a main part of the second embodiment of the present invention.
The connection structure of the heat exchanger tank is different from that of the first embodiment in that the plate 3 is a header plate in which the open end of the tank body 2 is fitted, and the end of the tube 24 is inserted into the tube insertion hole. And the insertion part is brazed.
In this embodiment, the outer peripheral edge of the plate 3 constituting the header plate has a raised side wall portion. A locking claw 6 is provided at the end of the side wall portion.

本発明は、ラジエータやチャージエアクーラ等の各種熱交換器の接続構造として利用できる。このとき、プレート３はタンク本体の開口を被蔽するチューブプレートの場合と、環状溝を端部内周に有する筒状のケーシングの場合の両者を含む。 The present invention can be used as a connection structure for various heat exchangers such as radiators and charge air coolers. At this time, the plate 3 includes both a tube plate that covers the opening of the tank body and a tubular casing that has an annular groove on the inner circumference of the end.

１ 開口端
２ タンク本体
２ａ タンク本体
３ プレート
３ａ プレート本体
３ｂ 側蓋
４ フランジ部
４ａ 係止面
４ｂ シール面
５ スリット 1 Open end 2 Tank body 2a Tank body 3 Plate 3a Plate body 3b Side lid 4 Flange part 4a Locking surface 4b Sealing surface 5 Slit

６ 係止爪
６ａ 弧状縁
７ 溝部
８ 突設部
８ａ 端部
９ ブラケット
９ａ 環状溝
１０ シールリング
１２ 偏平チューブ
１３ コア 6 Locking claw 6a Arc-shaped edge 7 Groove 8 Protruding part 8a End 9 Bracket 9a Circular groove 10 Seal ring 12 Flat tube 13 Core

１４ 冷却水パイプ
１５ 排ガスパイプ
１６ 仕切部
１７ ディンプル
１８ 冷却水
１９ 排ガス
２０ 凹陥部
２１ Ｒ曲面
２２ 亀裂
２３ 拡開部
２４ チューブ 14 Cooling water pipe 15 Exhaust gas pipe 16 Partition 17 Dimple 18 Cooling water 19 Exhaust gas 20 Recessed part 21 R curved surface 22 Crack 23 Expanded part 24 Tube

Claims (2)

内部に第１の流体が流通する箱型に形成され、その箱の底部が開口されて開口端（１）が形成されており、その開口端（１）の外面側にフランジ部（４）が突設されているタンク本体（２）と、
前記タンク本体（２）のフランジ部（４）がシールリング（１０）を介して嵌着する環状溝（９ａ）を内面側に有し、外面側の端部の外周に、周方向に離間して間欠的に複数のスリット（５）が形成されたプレート（３）と、を具備し、
前記プレート（３）の各スリット（５）に隣接する端部が、前記フランジ部（４）の突設方向と逆方向に且つ、フランジ部（４）の周方向に平行な弧状に塑性変形されて、複数の係止爪（６）が形成されており、その係止爪（６）の前記スリット（５）側の弧状縁（６ａ）が前記フランジ部（４）の係止面（４ａ）に係止されている熱交換器用タンクの接続構造において、
タンク本体（２）には、前記フランジ部（４）の前記外面側に、そのフランジ部（４）に平行な溝部（７）を介して、フランジ部（４）に平行で前記周方向に間欠的に複数の突設部（８）が形成されおり、その周方向に対向する突設部（８、８）の端部間に前記各スリット（５）に隣接する端部が圧入されており、そこに塑性変形された複数の前記係止爪（６）を有し、前記スリット（５）の前記周方向の長さは、前記溝部（７）の前記周方向長さより短く形成された熱交換器用タンクの接続構造。 It is formed in a box shape through which the first fluid flows, and the bottom of the box is opened to form an open end (1), and a flange portion (4) is provided on the outer surface side of the open end (1). The protruding tank body (2) and
The flange portion (4) of the tank body (2) has an annular groove (9a) to be fitted via the seal ring (10) on the inner surface side, and is separated from the outer periphery of the end portion on the outer surface side in the circumferential direction. A plate (3) in which a plurality of slits (5) are formed intermittently is provided.
The end portion of the plate (3) adjacent to each slit (5) is plastically deformed into an arc shape in the direction opposite to the projecting direction of the flange portion (4) and parallel to the circumferential direction of the flange portion (4). A plurality of locking claws (6) are formed, and the arcuate edge (6a) of the locking claw (6) on the slit (5) side is the locking surface (4a) of the flange portion (4). In the connection structure of the heat exchanger tank locked to
The tank body (2) is intermittent in the circumferential direction parallel to the flange portion (4) via a groove portion (7) parallel to the flange portion (4) on the outer surface side of the flange portion (4). A plurality of projecting portions (8) are formed, and an end portion adjacent to each of the slits (5) is press-fitted between the ends of the projecting portions (8, 8) facing each other in the circumferential direction. The heat formed therein has a plurality of the locking claws (6) plastically deformed, and the length of the slit (5) in the circumferential direction is shorter than the length of the groove (7) in the circumferential direction. Connection structure of tank for exchanger. 前記溝部（７）がタンク本体（２）の外周の全周に渡って形成された請求項１に記載の熱交換器用タンクの接続構造。 The connection structure for a heat exchanger tank according to claim 1, wherein the groove portion (7) is formed over the entire circumference of the outer circumference of the tank body (2).
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