JP2001280558A - Joint device for piping - Google Patents
Joint device for pipingInfo
- Publication number
- JP2001280558A JP2001280558A JP2000092579A JP2000092579A JP2001280558A JP 2001280558 A JP2001280558 A JP 2001280558A JP 2000092579 A JP2000092579 A JP 2000092579A JP 2000092579 A JP2000092579 A JP 2000092579A JP 2001280558 A JP2001280558 A JP 2001280558A
- Authority
- JP
- Japan
- Prior art keywords
- cylindrical
- axial direction
- cylindrical portion
- ring
- pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
- F28F9/0246—Arrangements for connecting header boxes with flow lines
- F28F9/0248—Arrangements for sealing connectors to header boxes
-
- 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
- F28F9/0246—Arrangements for connecting header boxes with flow lines
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
- Details Of Heat-Exchange And Heat-Transfer (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明の配管用継手装置は、
例えば、自動車等の空気調和装置に組み込まれてヒータ
コア等として使用される熱交換器を構成するタンクに対
し、上記空気調和装置を構成する配管の端部を接続する
為に利用できる。更には、互いに接続すべき１対の配管
の端部同士を液密に接続する為に利用できる。TECHNICAL FIELD The present invention relates to a piping joint device.
For example, it can be used to connect an end of a pipe constituting the air conditioner to a tank constituting a heat exchanger used as a heater core or the like incorporated in an air conditioner such as an automobile. Furthermore, it can be used for connecting the ends of a pair of pipes to be connected to each other in a liquid-tight manner.
【０００２】[0002]
【従来の技術】自動車等の空気調和装置には、ヒータコ
ア等の熱交換器を組み込む。この様な熱交換器として従
来から、例えば図５に示す様な構造のものが広く使用さ
れている。この熱交換器１は、それぞれがアルミニウム
合金製の構成部材同士を組み合わせた状態で、これら各
構成部材同士をろう付けにより一体接合して成る。この
様な熱交換器１は、互いに平行に配置された１対のアル
ミニウム合金製のタンク２、２を備え、このタンク２、
２同士の間に、複数の伝熱管３、３とコルゲート型のフ
ィン４、４とを交互に配置して、コア部５を構成してい
る。これら伝熱管３、３の両端部（図５の上下両端部）
は、それぞれ上記１対のタンク２、２を液密に貫通し、
それぞれの内側通路をこれらタンク２、２の内部に連通
させている。2. Description of the Related Art A heat exchanger such as a heater core is incorporated in an air conditioner such as an automobile. Conventionally, a heat exchanger having a structure as shown in FIG. 5 has been widely used as such a heat exchanger. This heat exchanger 1 is formed by combining aluminum alloy components with each other and integrally joining these components by brazing. Such a heat exchanger 1 is provided with a pair of aluminum alloy tanks 2 and 2 arranged in parallel with each other.
A plurality of heat transfer tubes 3 and 3 and corrugated fins 4 and 4 are alternately arranged between the two to form a core portion 5. Both ends of these heat transfer tubes 3, 3 (upper and lower ends in FIG. 5)
Penetrates the pair of tanks 2 and 2 in a liquid-tight manner,
The respective inner passages communicate with the insides of the tanks 2 and 2.
【０００３】又、上記１対のタンク２、２のうち、一方
（図５の上方）のタンク２は、内側中間部に仕切板６を
設け、この一方のタンク２内を入口室７と出口室８とに
２分割している。そして、この一方のタンク２の壁板部
の上面で、それぞれ上記入口室７及び出口室８に対応す
る位置に、貫通孔を設けている。そして、これら各貫通
孔に直接、若しくは図示しない接合用ブラケットを介し
て、入口管９及び出口管１０を液密に接続固定してい
る。そして、これら入口管９及び出口管１０の先端部
に、それぞれ流体を移送する為の配管の端部を接続自在
としている。この様な熱交換器１は、上記各構成部材の
当接部分を互いにろう付けする事により、これら各構成
部材同士を一体的に接合する。このろう付け作業は加熱
炉内で同時に行なう。又、ろう付けの為のろう材は、互
いに当接する部材のうちの一方の部材を構成するクラッ
ド材のろう材層により供給する。尚、上記入口管９及び
出口管１０は、他の構成部材同士をろう付けした後に、
別個の結合固定手段により組み付ける場合もある。One of the tanks 2 (upper in FIG. 5) is provided with a partition plate 6 at an intermediate portion inside, and the inside of one tank 2 is provided with an inlet chamber 7 and an outlet. The room 8 is divided into two. Then, on the upper surface of the wall plate portion of the one tank 2, through holes are provided at positions corresponding to the inlet chamber 7 and the outlet chamber 8, respectively. The inlet pipe 9 and the outlet pipe 10 are liquid-tightly connected and fixed directly to these through holes or via a joining bracket (not shown). The ends of the pipes for transferring the fluid can be freely connected to the distal ends of the inlet pipe 9 and the outlet pipe 10, respectively. In such a heat exchanger 1, these contact members are integrally joined by brazing the contact portions of the above-mentioned contact members. This brazing operation is performed simultaneously in the heating furnace. Further, the brazing material for brazing is supplied by a brazing material layer of a clad material constituting one of the members abutting on each other. In addition, the said inlet pipe 9 and the outlet pipe 10, after brazing other structural members,
In some cases, it is assembled by separate connecting and fixing means.
【０００４】上述の様に構成する熱交換器１を、ヒータ
コアとして使用する場合の作用は、次の通りである。車
室内の暖房を行なう際には、エンジンのウォータージャ
ケット内で温められた冷却水を、図示しない配管から上
記入口管９を介して上記入口室７に送り込む。この冷却
水は、上記入口室７側にそれぞれの一端（図５の上端）
を通じさせた伝熱管３、３を通り、他方（図５の下方）
のタンク２側へと移送され、更に、上記出口室８側にそ
れぞれの一端（図５の上端）を通じさせた伝熱管３、３
を通り、この出口室８に達する。そして、この出口室８
側に設けた出口管１０から図示しない配管を通り再びエ
ンジンのウォータージャケットに戻る。この様に冷却水
を流通させる事により、前記コア部５の温度が上昇する
為、このコア部５を構成する伝熱管３、３及びフィン
４、４の間に空気を流せば、この空気を加温し、室内を
暖房できる。The operation when the heat exchanger 1 configured as described above is used as a heater core is as follows. When heating the vehicle interior, cooling water warmed in the water jacket of the engine is sent from the piping (not shown) to the inlet chamber 7 via the inlet pipe 9. This cooling water is provided at one end (upper end in FIG. 5) on the inlet chamber 7 side.
Through the heat transfer tubes 3, 3 passed through, the other (lower in FIG. 5)
Are transferred to the tank 2 side, and the heat transfer tubes 3 and 3 are further passed through one end (upper end in FIG. 5) of the outlet chamber 8 side.
To reach this exit chamber 8. And this exit room 8
From the outlet pipe 10 provided on the side, it returns to the water jacket of the engine again through piping not shown. By circulating the cooling water in this way, the temperature of the core portion 5 rises. If air is flowed between the heat transfer tubes 3 and 3 and the fins 4 and 4 constituting the core portion 5, this air is It can heat and heat the room.
【０００５】次に、上述の様に構成する熱交換器１のう
ち、上記タンク２と上記入口管９又は出口管１０との接
合部の具体的構造に就いて、本発明の実施の形態の第１
例を示す図１〜２により説明する。特許請求の範囲に記
載した「第二配管」に相当する、上記入口管９又は出口
管１０は、やはり特許請求の範囲に記載した「第一配
管」に相当する、接合用ブラケット１１を介して上記タ
ンク２の壁板部１２に形成した貫通孔１３に接合してい
る。即ち、上記入口管９又は出口管１０と上記接合用ブ
ラケット１１と後述するＯリング２５とが、本発明の対
象となる、配管用継手装置を構成する。このうちの接合
用ブラケット１１は、上記壁板部１２に対する上記入口
管９又は出口管１０の支持強度を確保等する為の部材で
ある。この様な接合用ブラケット１１は、アルミニウム
合金製の板材に絞り加工等を施す事により、断面クラン
ク形で全体を円筒状に形成している。Next, the specific structure of the junction between the tank 2 and the inlet pipe 9 or the outlet pipe 10 in the heat exchanger 1 configured as described above will be described according to the embodiment of the present invention. First
This will be described with reference to FIGS. The inlet pipe 9 or the outlet pipe 10 corresponding to the “second pipe” described in the claims via the joining bracket 11 also corresponding to the “first pipe” described in the claims. It is joined to a through hole 13 formed in the wall plate 12 of the tank 2. That is, the inlet pipe 9 or the outlet pipe 10, the joining bracket 11, and the O-ring 25 described later constitute a piping joint device to which the present invention is applied. Of these, the joining bracket 11 is a member for ensuring the strength of supporting the inlet pipe 9 or the outlet pipe 10 with respect to the wall plate 12. Such a joining bracket 11 is formed into a cylindrical shape with a crank-shaped cross section by subjecting an aluminum alloy plate to drawing or the like.
【０００６】即ち、この接合用ブラケット１１は、それ
ぞれ同心に設けた第一、第二、第三円筒部１４、１５、
１６と、軸方向に隣り合うこれら各円筒部１４、１５、
１６の端縁同士を連続させる、第一、第二連続部１７、
１８とを備える。このうちの第一円筒部１４は、上記貫
通孔１３にほぼ隙間なく挿通自在であると共に、その内
周面を第一円筒面１９としている。又、上記第二円筒部
１５は、上記第一円筒部１４の軸方向一端側（図１〜２
の上端側）に設けられて、その内周面を上記第一円筒面
１９と同心で且つこの第一円筒面１９よりも大径の第二
円筒面２０としている。又、上記第三円筒部１６は、上
記第二円筒部１５の軸方向他端側（図１〜２の上端側）
に設けられて、その内周面を上記第一、第二両円筒面１
９、２０と同心で且つこの第二円筒面２０よりも大径の
第三円筒面２１としている。又、上記第一円筒部１４の
軸方向一端縁と上記第二円筒部１５の軸方向一端縁（図
１〜２の下端縁）とを、円輪状に形成した上記第一連続
部１７により連続させると共に、上記第二円筒部１５の
軸方向他端縁と上記第三円筒部１６の軸方向一端縁（図
１〜２の下端縁）とを、やはり円輪状に形成した上記第
二連続部１８により連続させている。That is, the joining bracket 11 includes first, second, and third cylindrical portions 14, 15, provided concentrically, respectively.
16 and these cylindrical portions 14, 15, which are adjacent in the axial direction.
A first and a second continuous portion 17 that make the edges of 16 continuous with each other;
18. The first cylindrical portion 14 is freely insertable into the through hole 13 with almost no gap, and has an inner peripheral surface as a first cylindrical surface 19. Further, the second cylindrical portion 15 is provided at one axial end of the first cylindrical portion 14 (see FIGS.
And an inner peripheral surface thereof is a second cylindrical surface 20 concentric with the first cylindrical surface 19 and having a diameter larger than that of the first cylindrical surface 19. Further, the third cylindrical portion 16 is the other axial end of the second cylindrical portion 15 (the upper end in FIGS. 1 and 2).
And the inner peripheral surface of the first and second cylindrical surfaces 1
The third cylindrical surface 21 is concentric with the cylindrical surfaces 9 and 20 and has a diameter larger than that of the second cylindrical surface 20. Further, one end in the axial direction of the first cylindrical portion 14 and one end in the axial direction (the lower end in FIGS. 1 and 2) of the second cylindrical portion 15 are connected by the first continuous portion 17 formed in a ring shape. In addition, the second continuous portion, which is also formed in an annular shape, is formed by connecting the other end in the axial direction of the second cylindrical portion 15 and the one end in the axial direction of the third cylindrical portion 16 (the lower end in FIGS. 1 and 2). 18 are continuous.
【０００７】上述の様な接合用ブラケット１１を前記壁
板部１２に接合固定する場合には、上記第一円筒部１４
を前記貫通孔１３に挿通しつつ、上記第一連続部１７の
外側面（図１〜２の下面）を上記壁板部１２の外面（図
１〜２の上面）に全周に亙り当接させる。そして、この
様に当接させた部分をろう付けする。尚、これら壁板部
１２と接合用ブラケット１１との当接部のろう付けは、
熱交換器を構成する各部材同士のろう付けと同時に行な
う。When the joining bracket 11 as described above is joined and fixed to the wall plate portion 12, the first cylindrical portion 14
The outer surface (the lower surface in FIGS. 1 and 2) of the first continuous portion 17 abuts on the outer surface (the upper surface in FIGS. 1 and 2) of the wall plate portion 12 over the entire circumference while inserting the through hole 13. Let it. Then, the contacted part is brazed. The brazing of the contact portion between the wall plate portion 12 and the joining bracket 11 is performed as follows.
This is performed simultaneously with the brazing of each member constituting the heat exchanger.
【０００８】又、前記入口管９及び出口管１０は、それ
ぞれアルミニウム合金製の板材により全体を円筒状に造
っている。これら入口管９及び出口管１０は、その先端
側（図１〜２の下端側）部分に、上記第一円筒部１４の
内側にがたつきなく挿入自在な挿入筒部２２を設けてい
る。又、この挿入筒部２２の基端部（図１〜２の上端
部）外周面に、突出部である外向フランジ状の鍔部２３
を設けている。図示の例では、この鍔部２３を、上記入
口管９及び出口管１０を構成する板材の一部を全周に亙
り直径方向外方に座屈変形させる事により形成してい
る。この様に形成した鍔部２３の外周縁部は、全周に亙
り半円弧状の凸曲面となっている。従って、この鍔部２
３の外径寸法は、この鍔部２３の外周縁部の軸方向中央
部に存在する頂部２４部分で最大となる。図示の例で
は、上記鍔部２３のうち、この頂部２４部分の外径寸法
を、前記第三円筒面２１の直径寸法よりも僅かに小さく
する事に基づき、上記鍔部２３を前記第三円筒部１６の
内側にのみ挿入自在としている。The entirety of the inlet pipe 9 and the outlet pipe 10 is made of a plate made of an aluminum alloy into a cylindrical shape. Each of the inlet pipe 9 and the outlet pipe 10 is provided with an insertion tube portion 22 at its front end (lower end in FIGS. 1 and 2) which can be inserted into the first cylindrical portion 14 without rattling. An outward flange-shaped flange portion 23 as a protruding portion is provided on an outer peripheral surface of a base end portion (upper end portion in FIGS. 1 and 2) of the insertion tube portion 22.
Is provided. In the illustrated example, the flange portion 23 is formed by deforming a part of the plate material forming the inlet pipe 9 and the outlet pipe 10 diametrically outward over the entire circumference. The outer peripheral edge of the flange portion 23 formed in this manner is a semicircular convex curved surface over the entire circumference. Therefore, this collar 2
The outer diameter of 3 is maximum at the top 24 located at the axial center of the outer peripheral edge of the flange 23. In the illustrated example, the outer diameter of the top portion 24 of the flange 23 is made slightly smaller than the diameter of the third cylindrical surface 21 so that the flange 23 is It can be inserted only inside the part 16.
【０００９】上述の様な入口管９又は出口管１０を上記
接合用ブラケット１１に結合する場合には、先ず、図１
に示す様に、上記挿入筒部２２の基端部にＯリング２５
を、このＯリング２５の軸方向一端縁（図１〜２の上端
縁）を上記鍔部２３の片側面（図１〜２の下側面）の内
径側部分に突き当てた状態で外嵌支持する。この様に外
嵌支持した上記Ｏリング２５の自由状態での外径寸法
は、前記第二円筒面２０の直径寸法よりも少し大きい。
次いで、図２に示す様に、上記挿入筒部２２の先端側
（図１〜２の下端側）部分を上記第一円筒部１４の内側
に、上記Ｏリング２５を上記第二円筒部１５の内側に、
上記鍔部２３を上記第三円筒部１６の内側に、それぞれ
挿入すると共に、この鍔部２３の片側面外径側部分を前
記第二連続部１８の内側面（図１〜２の上側面）に突き
当てる。この状態で、上記Ｏリング２５は、前記第二円
筒面２０と上記挿入筒部２２の基端部外周面との間で全
周に亙り弾性的に圧縮される。この結果、上記Ｏリング
２５が上記第二円筒面２０と上記挿入筒部２２の外周面
との間をシールする。次いで、上記第三円筒部１６の他
端側（図１〜２の上端側）部分を直径方向内方に塑性変
形させて、図２に鎖線で示す様なかしめ部２６を形成
し、このかしめ部２６により上記鍔部２３の他側面（図
１〜２の上側面）を抑え付ける。これにより、上記入口
管９又は出口管１０が、上記接合用ブラケット１１に対
してがたつきなく結合固定される。When the above-mentioned inlet pipe 9 or outlet pipe 10 is connected to the above-mentioned joining bracket 11, first, FIG.
As shown in FIG.
The O-ring 25 is externally fitted in a state where one end in the axial direction (upper edge in FIGS. 1 and 2) of the O-ring 25 abuts against the inner diameter side of one side surface (lower surface in FIGS. 1 and 2) of the flange portion 23. I do. The outer diameter of the O-ring 25, which is externally fitted and supported in the free state, is slightly larger than the diameter of the second cylindrical surface 20.
Next, as shown in FIG. 2, the tip side (lower end side in FIGS. 1 and 2) of the insertion tube portion 22 is placed inside the first cylinder portion 14, and the O-ring 25 is attached to the second cylinder portion 15. on the inside,
The flange 23 is inserted into the inside of the third cylindrical portion 16, and the outer diameter side portion of one side of the flange 23 is connected to the inner surface of the second continuous portion 18 (upper surface of FIGS. 1 and 2). Hit it. In this state, the O-ring 25 is elastically compressed over the entire circumference between the second cylindrical surface 20 and the outer peripheral surface at the base end of the insertion cylindrical portion 22. As a result, the O-ring 25 seals between the second cylindrical surface 20 and the outer peripheral surface of the insertion cylindrical portion 22. Next, the other end side (upper end side in FIGS. 1 and 2) of the third cylindrical portion 16 is plastically deformed inward in the diametrical direction to form a swaging portion 26 as shown by a chain line in FIG. The other side (the upper side in FIGS. 1 and 2) of the flange 23 is suppressed by the portion 26. Thereby, the inlet pipe 9 or the outlet pipe 10 is fixedly connected to the joining bracket 11 without play.
【００１０】上述の様に構成する配管用継手装置の場
合、上記入口管９又は出口管１０と接合用ブラケット１
１との結合を、上記かしめ部２６により行なっているの
で、ねじやリベット等の別個の結合部材が不要となるだ
けでなく、トーチろう付け等のコストの嵩む作業を行な
う必要もない為、製造コストの低減を図れる。In the case of the piping joint device constructed as described above, the inlet pipe 9 or the outlet pipe 10 is connected to the joining bracket 1.
Since the connection with the first member 1 is performed by the caulking portion 26, not only a separate connecting member such as a screw or a rivet is not required, but also it is not necessary to perform a costly operation such as torch brazing. Cost can be reduced.
【００１１】[0011]
【発明が解決しようとする課題】上述の図１〜２に示し
た様な配管用継手装置の場合には、各部位の軸方向寸法
を適切に規制しないと、次の様な不都合を生じる可能性
がある。即ち、上述した様な組み付け作業の際に、上記
挿入筒部２２の先端部が上記第一円筒部１４の内側に進
入するよりも先に、上記鍔部２３の頂部２４が上記第三
円筒部１６の内側に進入する様な軸方向の寸法規制を行
なっていると、上記入口管９又は出口管１０の中心軸が
上記接合用ブラケット１１の中心軸に対し、上記鍔部２
３の外周面（頂部２４の近傍部分）と上記第三円筒部１
６の内周面（第三円筒面２１）との接触部を支点として
傾く可能性がある。この様に互いの中心軸同士が傾いた
場合には、その後に上記挿入筒部２２の先端部を上記第
一円筒部１４の内側に進入させる作業が難しくなる可能
性がある。In the case of the joint device for piping as shown in FIGS. 1 and 2 described above, the following inconveniences may occur unless the axial dimension of each part is properly regulated. There is. That is, at the time of the assembling operation as described above, the top portion 24 of the flange portion 23 is connected to the third cylindrical portion before the distal end portion of the insertion cylindrical portion 22 enters the inside of the first cylindrical portion 14. 16, the central axis of the inlet pipe 9 or the outlet pipe 10 is aligned with the central axis of the joining bracket 11.
3 and the third cylindrical portion 1
There is a possibility that the contact portion 6 is inclined with the contact portion with the inner peripheral surface (third cylindrical surface 21) as a fulcrum. If the center axes of the two cylinders are inclined in this manner, there is a possibility that it may be difficult to subsequently move the distal end of the insertion tube 22 into the inside of the first cylinder 14.
【００１２】この場合更に、製造誤差に基づいて上記第
三円筒面２１の内径寸法が上記鍔部２３の頂部２４の直
径に比べて、より大きくなっている場合には、上記両中
心軸同士の傾きが大きくなる。そして、上記挿入筒部２
２の基端部に外嵌支持したＯリング２５の円周方向の一
部が、前記第二連続部１８の内側面と上記第二円筒面２
０との連続部に存在する凸曲面状の角部２７により強く
押し潰される等して、損傷する可能性がある。そして、
実際に上記Ｏリング２５の一部が損傷すると、このＯリ
ング２５によるシール機能が損なわれる為、好ましくな
い。本発明の配管用継手装置は、上述の様な事情に鑑み
て、組み付け作業の容易化を図ると共に、この組み付け
作業の際にＯリングが損傷しない構造を実現すべく発明
したものである。In this case, if the inner diameter of the third cylindrical surface 21 is larger than the diameter of the top portion 24 of the flange portion 23 due to a manufacturing error, if the diameters of the two central axes are mutually larger. Incline increases. And the above-mentioned insertion tube part 2
A part of the O-ring 25 externally fitted and supported at the base end of the second cylindrical portion 2 is formed on the inner surface of the second continuous portion 18 and the second cylindrical surface 2.
There is a possibility of being damaged by being strongly crushed or the like by the convex-curved corner 27 existing in the continuous portion with zero. And
If a part of the O-ring 25 is actually damaged, the sealing function of the O-ring 25 is impaired, which is not preferable. The piping joint device of the present invention has been made in view of the above-described circumstances to facilitate the assembling work, and to invent a structure in which the O-ring is not damaged during the assembling work.
【００１３】[0013]
【課題を解決するための手段】本発明の配管用継手装置
は、前述した様に、例えば図１〜２に示した配管用継手
装置と同様、金属製の第一配管（接合用ブラケット）及
び第二配管（入口管又は出口管）と、これら第一配管と
第二配管との接続部の液密を保持する為のＯリングとを
備える。As described above, the pipe joint device of the present invention, as described above, for example, is similar to the pipe joint device shown in FIGS. A second pipe (an inlet pipe or an outlet pipe) and an O-ring for maintaining liquid tightness at a connection portion between the first pipe and the second pipe are provided.
【００１４】そして、このうちの第一配管は、その内周
面を第一円筒面とした第一円筒部と、その内周面をこの
第一円筒面と同心で且つこの第一円筒面よりも大径の第
二円筒面とした第二円筒部と、その内周面を上記第一、
第二両円筒面と同心で且つこの第二円筒面よりも大径の
第三円筒面とした第三円筒部と、上記第一円筒部の軸方
向一端縁と上記第二円筒部の軸方向一端縁とを連続させ
る第一連続部と、この第二円筒部の軸方向他端縁と上記
第三円筒部の軸方向一端縁とを連続させる第二連続部と
を備えたものである。又、上記第二配管は、上記第一円
筒部の内側に挿入自在な挿入筒部と、この挿入筒部の基
端部外周面から全周に亙り直径方向外方に突出する状態
で設けられて、その外径が最大となる部分を上記第三円
筒部の内側にのみ挿入自在な突出部とを備えたものであ
る。又、上記Ｏリングは、その軸方向一端縁を上記突出
部の上記挿入筒部側の側面の内径側部分に突き当てた状
態でこの挿入筒部の基端部に外嵌支持している。そし
て、この挿入筒部の先端側部分を上記第一円筒部の内側
に、上記突出部のうちの外径が最大となる部分を上記第
三円筒部の内側に、それぞれ挿入すると共に、上記突出
部の上記挿入筒部側の側面の外径側部分を上記第二連続
部に突き当てた状態で、上記挿入筒部の基端部外周面と
上記第二円筒面との間で全周に亙り弾性的に圧縮され
る。The first pipe has a first cylindrical portion having an inner peripheral surface as a first cylindrical surface, and an inner peripheral surface concentric with the first cylindrical surface and extending from the first cylindrical surface. The second cylindrical portion also has a second cylindrical surface having a large diameter, and the inner peripheral surface thereof is the first,
A third cylindrical portion concentric with the second cylindrical surfaces and having a third cylindrical surface larger in diameter than the second cylindrical surface, one axial end of the first cylindrical portion, and an axial direction of the second cylindrical portion; It has a first continuous portion that connects one end edge, and a second continuous portion that connects the other axial edge of the second cylindrical portion and the one axial edge of the third cylindrical portion. The second pipe is provided so as to be insertable inside the first cylindrical portion, and to protrude diametrically outward over the entire circumference from the outer peripheral surface of the base end portion of the insert cylindrical portion. Further, a projection having a portion having the maximum outer diameter can be inserted only inside the third cylindrical portion. The O-ring is externally fitted to and supported by the base end of the insertion tube in a state in which one end in the axial direction of the O-ring is abutted against the inner diameter side of the side of the protrusion on the side of the insertion tube. Then, the distal end side portion of the insertion tube portion is inserted inside the first cylindrical portion, and the portion having the largest outer diameter of the protrusion portion is inserted inside the third cylinder portion, and the protrusion is inserted. In a state where the outer diameter side portion of the side surface of the portion on the side of the insertion cylinder portion abuts against the second continuous portion, the entire circumference between the outer peripheral surface of the base end portion of the insertion cylinder portion and the second cylindrical surface. Compressed elastically.
【００１５】特に、本発明の配管用継手装置に於いて
は、上記突出部の外径が最大となる部分のうち軸方向に
関して上記挿入筒部に最も近い部分からこの挿入筒部の
先端縁までの軸方向に関する寸法をＡとし、同じく上記
突出部の外径が最大となる部分のうち軸方向に関して上
記挿入筒部に最も近い部分から上記挿入筒部の基端部に
外嵌支持した上記Ｏリングの軸方向他端縁までの軸方向
に関する寸法をＢとし、上記第三円筒面の軸方向他端縁
から上記第一円筒面の軸方向一端縁までの軸方向に関す
る寸法をＣとし、同じく上記第三円筒面の軸方向他端縁
から上記第二円筒面の軸方向他端縁までの軸方向に関す
る寸法をＤとした場合に、これら各寸法Ａ〜Ｄが、Ａ≧
Ｃ且つＢ＜Ｄの関係を満たす。In particular, in the piping joint device according to the present invention, from the portion where the outer diameter of the protruding portion is the largest, from the portion closest to the insertion tube portion in the axial direction to the distal end edge of the insertion tube portion. A is a dimension in the axial direction of A, and the portion of the O which is externally supported on the base end of the insertion cylinder from the part closest to the insertion cylinder in the axial direction among the parts where the outer diameter of the protrusion is the maximum. B is the dimension in the axial direction up to the other axial end of the ring, and C is the dimension in the axial direction from the other axial end of the third cylindrical surface to one axial end of the first cylindrical surface. When the dimension in the axial direction from the other axial end of the third cylindrical surface to the other axial end of the second cylindrical surface is D, these dimensions A to D are A ≧
The relationship of C and B <D is satisfied.
【００１６】[0016]
【作用】上述の様に構成する本発明の配管用継手装置の
場合には、各部位の軸方向寸法を適切に規制している
為、組み付け作業の際に、前述した様に挿入筒部を第一
円筒部の内側に挿入する作業が難しくなる事を防止し
て、この組み付け作業の容易化を図れる。更に、この組
み付け作業の際に、第二配管の中心軸が第一配管の中心
軸に対して傾く事を有効に防止して、Ｏリングが第二連
続部の内側面と第二円筒面との連続部に存在する凸状の
角部に強く押し潰される等して損傷する事を防止でき
る。この為、上記Ｏリングのシール機能を確実に発揮さ
せる事ができる。In the case of the piping joint device of the present invention configured as described above, since the axial dimension of each part is appropriately regulated, the insertion tube portion is attached at the time of assembling work as described above. It is possible to prevent the work of inserting the inside of the first cylindrical portion from becoming difficult, and to facilitate the assembling work. Further, during this assembling operation, the center axis of the second pipe is effectively prevented from being inclined with respect to the center axis of the first pipe, and the O-ring is formed between the inner surface of the second continuous portion and the second cylindrical surface. Can be prevented from being damaged by being strongly crushed by a convex corner portion existing in the continuous portion. Therefore, the sealing function of the O-ring can be reliably exhibited.
【００１７】[0017]
【発明の実施の形態】図１は、請求項１のみに対応す
る、本発明の実施の形態の第１例を示している。尚、本
例の特徴は、第一配管である接合用ブラケット１１と第
二配管である入口管９又は出口管１０との各部の寸法を
規制する事により、これら両部材１１、９（１０）同士
の結合作業時にＯリング２５が損傷するのを防止した点
にある。その他の部分の基本構成に就いては前述した通
りであるから、重複する説明を省略若しくは簡略にし、
以下、本発明の特徴部分を中心に説明する。FIG. 1 shows a first example of an embodiment of the present invention, which corresponds to only claim 1 of the present invention. The feature of this example is that by regulating the dimensions of each part of the joining bracket 11 as the first pipe and the inlet pipe 9 or the outlet pipe 10 as the second pipe, these two members 11, 9 (10) The point is that the O-ring 25 is prevented from being damaged during the joining operation. Since the basic configuration of the other parts is as described above, duplicate description is omitted or simplified,
Hereinafter, the description will focus on the features of the present invention.
【００１８】本例の場合、各部の寸法を次の様に規制し
ている。先ず、上記入口管９又は出口管１０を構成す
る、突出部である鍔部２３の外周面の頂部２４（この鍔
部２３の外径が最大となる部分のうち、軸方向に関して
挿入筒部２２に最も近い部分）から、この挿入筒部２２
の先端部（図１の下端部）までの、軸方向に関する寸法
をＡとする。同じく、上記頂部２４から、上記挿入筒部
２２の基端部に外嵌支持したＯリング２５の軸方向他端
縁（図１の下端縁）までの、軸方向に関する寸法をＢと
する。尚、この寸法Ｂは、上記Ｏリング２５を上記鍔部
２３に当接させた状態での寸法とする。又、上記接合用
ブラケット１１を構成する、第三円筒部１６の内周面で
ある第三円筒面２１の軸方向他端縁（図１の上端縁）か
ら、第一円筒部１４の内周面である第一円筒面１９の軸
方向一端縁（図１の上端縁）までの、軸方向に関する寸
法をＣとする。同じく、上記第三円筒面２１の軸方向他
端縁から、第二円筒部１５の内周面である第二円筒面２
０の軸方向他端縁（図１の上端縁）までの、軸方向に関
する寸法をＤとする。尚、これら両寸法Ｃ、Ｄは、第
一、第二両円筒面１９、２０の端部に存在する、内径が
軸方向に変化する傾斜部が終了する部分までの寸法とす
る。そして、これら各寸法Ａ〜Ｄを、Ａ≧Ｃ且つＢ＜Ｄ
の関係を満たす様に規制している。In the case of this embodiment, the dimensions of each part are regulated as follows. First, the top portion 24 of the outer peripheral surface of the flange portion 23 which is a protruding portion and constitutes the inlet pipe 9 or the outlet pipe 10 (of the portion where the outer diameter of the flange portion 23 is maximum, the insertion cylindrical portion 22 in the axial direction). From the part closest to
A is the dimension in the axial direction up to the tip (the lower end in FIG. 1). Similarly, the dimension in the axial direction from the top 24 to the other end in the axial direction of the O-ring 25 (the lower end in FIG. 1) of the O-ring 25 externally fitted and supported on the base end of the insertion tube 22 is represented by B. The dimension B is a dimension in a state where the O-ring 25 is in contact with the flange 23. Further, from the other axial end (upper edge in FIG. 1) of the third cylindrical surface 21, which is the inner peripheral surface of the third cylindrical portion 16, which constitutes the joining bracket 11, the inner peripheral surface of the first cylindrical portion 14. The dimension in the axial direction up to one axial edge (upper edge in FIG. 1) of the first cylindrical surface 19 which is a surface is denoted by C. Similarly, from the other end in the axial direction of the third cylindrical surface 21, the second cylindrical surface 2 which is the inner peripheral surface of the second cylindrical portion 15 is formed.
The dimension in the axial direction up to the other end edge in the axial direction of 0 (the upper end edge in FIG. 1) is D. These dimensions C and D are the dimensions up to the end of the inclined portion whose inner diameter changes in the axial direction, which exists at the ends of the first and second cylindrical surfaces 19 and 20. Then, these dimensions A to D are defined as A ≧ C and B <D
Is regulated to satisfy the relationship.
【００１９】上述の様な寸法規制を行なっている本例の
配管用継手装置の場合、上記入口管９又は出口管１０を
上記接合用ブラケット１１の内側に挿入する際には、Ａ
≧Ｃの関係により、先ず、上記挿入筒部２２の先端部が
上記第一円筒部１４の内側に進入する。次いで、或はこ
れと同時に、上記鍔部２３の頂部２４が上記第三円筒部
１６の内側に進入する。この為、本例の場合には、上記
入口管９又は出口管１０の中心軸が上記接合用ブラケッ
ト１１の中心軸に対し、上記鍔部２３の外周面（頂部２
４の近傍部分）と上記第三円筒部１６の内周面（第三円
筒面２１）との接触部を支点として傾く事はない。この
為、上記挿入筒部２２の先端部を上記第一円筒部１４の
内側に進入させる作業が難しくなったり、或は、上記挿
入筒部２２の基端部に外嵌支持したＯリング２５の円周
方向の一部が、上記第二連続部１８の内側面と上記第二
円筒面２０との連続部に存在する凸曲面状の角部２７に
より強く押し潰される等して損傷する事を防止できる。In the case of the piping joint device of the present embodiment in which the above-described dimensional restrictions are applied, when inserting the inlet pipe 9 or the outlet pipe 10 into the inside of the joining bracket 11, the pipe fitting A is required.
First, the tip of the insertion tube portion 22 enters the inside of the first cylinder portion 14 according to the relationship of ≧ C. Next, or simultaneously with this, the top 24 of the flange portion 23 enters the inside of the third cylindrical portion 16. For this reason, in the case of the present example, the central axis of the inlet pipe 9 or the outlet pipe 10 is aligned with the central axis of the joining bracket 11 with respect to the outer peripheral surface of the flange 23 (the top 2).
4) and the inner peripheral surface (third cylindrical surface 21) of the third cylindrical portion 16 as a fulcrum. For this reason, it is difficult to make the distal end portion of the insertion cylindrical portion 22 enter the inside of the first cylindrical portion 14, or the O-ring 25 which is externally fitted to the base end portion of the insertion cylindrical portion 22 and supported. A part in the circumferential direction is damaged by being strongly crushed by the convex curved corner 27 existing in the continuous portion between the inner surface of the second continuous portion 18 and the second cylindrical surface 20. Can be prevented.
【００２０】又、Ｂ＜Ｄの関係により、上述の様に鍔部
２３の頂部２４が上記第三円筒部１６の内側に進入する
よりも先に、上記Ｏリング２５が上記第二円筒部１５の
内側に進入する事はない。即ち、本例の場合には、上記
挿入筒部２２の先端部が上記第一円筒部１４の内側に、
上記鍔部２３の頂部２４が上記第三円筒部１６の内側
に、それぞれ進入する事により、上記入口管９又は出口
管１０の中心軸と上記接合用ブラケット１１の中心軸と
が（ほぼ）一致した後でなければ、上記Ｏリング２５が
上記第二円筒部１５の内側に進入しない。従って、上記
両中心軸同士が傾いたまま、上記Ｏリング２５が上記第
二円筒部１５の内側に挿入される事はない。この為、こ
のＯリング２５をこの第二円筒部１５内に挿入する際
に、このＯリング２５の円周方向の一部が、上記角部２
７により強く押し潰される等して損傷するのを防止でき
る。この様に本発明の場合には、上記Ｏリング２５が損
傷するのを防止できる為、このＯリング２５のシール機
能を確実に発揮させる事ができる。Further, due to the relationship of B <D, the O-ring 25 is connected to the second cylindrical portion 15 before the top portion 24 of the flange portion 23 enters the inside of the third cylindrical portion 16 as described above. There is no way to enter inside. That is, in the case of this example, the tip of the insertion tube portion 22 is located inside the first cylinder portion 14,
The center axis of the inlet pipe 9 or the outlet pipe 10 and the center axis of the joining bracket 11 are (substantially) coincident with each other when the top 24 of the flange portion 23 enters the inside of the third cylindrical portion 16. The O-ring 25 does not enter the inside of the second cylindrical portion 15 until after that. Therefore, the O-ring 25 is not inserted inside the second cylindrical portion 15 while the two central axes are inclined. Therefore, when the O-ring 25 is inserted into the second cylindrical portion 15, a part of the O-ring 25 in the circumferential direction is
7 can prevent damage such as being strongly crushed. As described above, in the case of the present invention, since the O-ring 25 can be prevented from being damaged, the sealing function of the O-ring 25 can be reliably exhibited.
【００２１】次に、図３〜４は、請求項１〜２に対応す
る、本発明の実施の形態の第２例を示している。本例の
場合には、入口管９ａ又は出口管１０ａを構成する挿入
筒部２２の基端部と鍔部２３との間に、接合用ブラケッ
ト１１ａを構成する第二円筒部１５の内側にがたつきな
く挿入自在な大径部２８を設けている。又、上記挿入筒
部２２の基端部に外嵌支持したＯリング２５の軸方向一
端縁（図３〜４の上端縁）は、上記大径部２８の軸方向
端面（図３〜４の下端面）に突き当てている。尚、自由
状態で上記Ｏリング２５の外周縁は、上記大径部２８の
外周面よりも直径方向外方に少し突出する。Next, FIGS. 3 and 4 show a second embodiment of the present invention corresponding to claims 1 and 2. FIG. In the case of this example, between the base end portion of the insertion tube portion 22 constituting the inlet tube 9a or the outlet tube 10a and the flange portion 23, the inside of the second cylindrical portion 15 constituting the joining bracket 11a is provided. A large-diameter portion 28 that can be inserted without looseness is provided. Further, one end in the axial direction of the O-ring 25 (upper end in FIGS. 3 to 4) which is externally supported on the base end of the insertion tube portion 22 is formed in the axial end face of the large diameter portion 28 (in FIGS. 3 to 4). Bottom end). In the free state, the outer peripheral edge of the O-ring 25 protrudes slightly outward in the diameter direction from the outer peripheral surface of the large-diameter portion 28.
【００２２】又、本例の場合、上記接合用ブラケット１
１ａを構成する第二連続部１８の内側面（図３〜４の上
面）と第二円筒面２０との連続部に、開口側（図３〜４
の上側）に向かう程直径が大きくなる方向に傾斜する円
すい凹面状の面取り部２９を設けている。この面取り部
２９は、上記Ｏリング２５を上記第二円筒面２０の内側
に進入させる際の案内面として機能する。In the case of this embodiment, the joining bracket 1 is used.
An opening side (FIGS. 3 to 4) is formed at a continuous portion between the inner side surface (the upper surface in FIGS.
(Upper side) is provided with a conical concave chamfered portion 29 that is inclined in a direction in which the diameter increases as going toward the upper side. The chamfered portion 29 functions as a guide surface when the O-ring 25 enters the inside of the second cylindrical surface 20.
【００２３】上述の様に構成する本例の配管用継手装置
の場合、図４に示す様に、上記入口管９ａ又は出口管１
０ａを上記接合用ブラケット１１ａの内側に挿入し切っ
た状態では、上記Ｏリング２５が、上記大径部２８の軸
方向寸法分だけ上記第二円筒部１５の奥部（図３〜４の
下部）に進入する。この結果、上記Ｏリング２５を、そ
の軸方向の全長に亙り上記挿入筒部２２の外周面と上記
第二円筒面２０との間で確実に圧縮挟持でき、このＯリ
ング２５のシール機能を良好に確保できる。これに対し
て、上述した第１例の様に、上記大径部２８を設けない
構造を採用した場合には、上記Ｏリング２５の一部が上
記挿入筒部２２の基端部外周面と凸曲面状の角部２７
（図１〜２参照）との間の幅の広い部分で圧縮挟持され
る可能性がある。この為、上記幅の広い部分で挟持され
た上記Ｏリング２５の一部分の圧縮量を、十分に確保で
きなくなる可能性がある。これに対して本例の場合に
は、上記Ｏリング２５の圧縮量を軸方向の全長に亙り十
分に確保する事で、このＯリング２５によるシール性能
を上述した第１例の場合よりも向上させる事ができる。In the case of the piping joint device of the present embodiment configured as described above, as shown in FIG.
0a is inserted into the inside of the joining bracket 11a, and the O-ring 25 is positioned at the inner portion of the second cylindrical portion 15 by the axial dimension of the large-diameter portion 28 (the lower portion in FIGS. ). As a result, the O-ring 25 can be reliably compressed and pinched between the outer peripheral surface of the insertion tube portion 22 and the second cylindrical surface 20 over the entire length in the axial direction, and the sealing function of the O-ring 25 is excellent. Can be secured. On the other hand, when a structure without the large-diameter portion 28 is employed as in the first example described above, a part of the O-ring 25 is Convex curved corner 27
(See FIGS. 1 and 2). For this reason, there is a possibility that a sufficient amount of compression of a part of the O-ring 25 sandwiched by the wide part cannot be secured. On the other hand, in the case of the present embodiment, by sufficiently securing the amount of compression of the O-ring 25 over the entire length in the axial direction, the sealing performance of the O-ring 25 is improved as compared with the case of the first embodiment described above. Can be done.
【００２４】本例の場合も、各寸法Ａ〜Ｄを、Ａ≧Ｃ且
つＢ＜Ｄの関係を満たす様に規制している。これによ
り、組み付け作業の際に、上記挿入筒部２２の先端部を
第一円筒部１４の内側に挿入する作業を容易にすると共
に、上記Ｏリング２５が上記面取り部２９の軸方向両端
周縁部に存在する凸状の角部３０、３０により強く押し
潰される等して損傷するのを防止している。Also in this embodiment, the dimensions A to D are regulated so as to satisfy the relations of A ≧ C and B <D. Thereby, at the time of the assembling work, the work of inserting the distal end of the insertion tube part 22 into the inside of the first cylindrical part 14 is facilitated, and the O-ring 25 is formed by the peripheral edges of both ends in the axial direction of the chamfered part 29. To prevent damage due to being strongly crushed by the convex corner portions 30, 30 existing in the above.
【００２５】又、本例の場合には、上記挿入筒部２２の
外周面と第一円筒面１９とのクリアランス（直径差）を
αとし、上記大径部２８の外周面と上記第二円筒面２０
とのクリアランスをβとし、前記鍔部２３の頂部２４と
第三円筒面２１とのクリアランスをγとした場合に、こ
れら各クリアランスα〜γが、α≦β＜γの関係を満た
す様に規制している。そして、この様な規制を行なう事
により、上記接合用ブラケット１１ａと上記入口管９ａ
又は出口管１０ａとの間に直径方向に亙る相対的な力が
加わった場合の強度を高めている。その他の構成及び作
用は、上述した第１例の場合と同様である。In the case of this embodiment, the clearance (diameter difference) between the outer peripheral surface of the insertion cylindrical portion 22 and the first cylindrical surface 19 is α, and the outer peripheral surface of the large diameter portion 28 and the second cylindrical surface Face 20
Is defined as β and the clearance between the top 24 of the flange 23 and the third cylindrical surface 21 is defined as γ, these clearances α to γ are regulated so as to satisfy the relationship α ≦ β <γ. are doing. By performing such a restriction, the joining bracket 11a and the inlet pipe 9a are formed.
Alternatively, the strength when a diametrical relative force is applied to the outlet pipe 10a is increased. Other configurations and operations are the same as those of the above-described first example.
【００２６】[0026]
【発明の効果】本発明の配管用継手装置は、以上に述べ
た通り構成され作用する為、組み付け作業の容易化を図
れると共に、この組み付け作業時にＯリングが損傷する
事を防止できる。この為、このＯリングのシール機能を
確実に発揮させる事のできる、信頼性の高い製品を提供
できる。The piping joint device of the present invention is constructed and operates as described above, so that the assembling work can be facilitated and the O-ring can be prevented from being damaged during this assembling work. Therefore, a highly reliable product that can reliably exert the sealing function of the O-ring can be provided.
【図１】本発明の実施の形態の第１例を、組み付け以前
の状態で示す、図５のＸ部に相当する部分断面図。FIG. 1 is a partial sectional view showing a first example of an embodiment of the present invention in a state before assembling and corresponding to a portion X in FIG. 5;
【図２】同じく組み付け後の状態で示す、図５のＸ部に
相当する部分断面図。FIG. 2 is a partial cross-sectional view corresponding to a portion X in FIG. 5, also shown in a state after assembly.
【図３】本発明の実施の形態の第２例を示す、図１と同
様の図。FIG. 3 is a view similar to FIG. 1, showing a second example of the embodiment of the present invention;
【図４】同じく、図２と同様の図。FIG. 4 is a view similar to FIG. 2;
【図５】熱交換器の１例を示す略正面図。FIG. 5 is a schematic front view showing one example of a heat exchanger.
１ 熱交換器 ２ タンク ３ 伝熱管 ４ フィン ５ コア部 ６ 仕切板 ７ 入口室 ８ 出口室 ９、９ａ 入口管 １０、１０ａ 出口管 １１、１１ａ 接合用ブラケット １２ 壁板部 １３ 貫通孔 １４ 第一円筒部 １５ 第二円筒部 １６ 第三円筒部 １７ 第一連続部 １８ 第二連続部 １９ 第一円筒面 ２０ 第二円筒面 ２１ 第三円筒面 ２２ 挿入筒部 ２３ 鍔部 ２４ 頂部 ２５ Ｏリング ２６ かしめ部 ２７ 角部 ２８ 大径部 ２９ 面取り部 ３０ 角部 DESCRIPTION OF SYMBOLS 1 Heat exchanger 2 Tank 3 Heat transfer tube 4 Fin 5 Core part 6 Partition plate 7 Inlet room 8 Outlet room 9, 9a Inlet tube 10, 10a Outlet tube 11, 11a Bracket for joining 12 Wall plate part 13 Through hole 14 First cylinder Part 15 Second cylindrical part 16 Third cylindrical part 17 First continuous part 18 Second continuous part 19 First cylindrical surface 20 Second cylindrical surface 21 Third cylindrical surface 22 Insertion cylindrical part 23 Flange part 24 Top part 25 O-ring 26 Caulking Part 27 corner part 28 large diameter part 29 chamfered part 30 corner part
Claims (2)
管と、これら第一配管と第二配管との接続部の液密を保
持する為のＯリングとを備え、 このうちの第一配管は、その内周面を第一円筒面とした
第一円筒部と、その内周面をこの第一円筒面と同心で且
つこの第一円筒面よりも大径の第二円筒面とした第二円
筒部と、その内周面を上記第一、第二両円筒面と同心で
且つこの第二円筒面よりも大径の第三円筒面とした第三
円筒部と、上記第一円筒部の軸方向一端縁と上記第二円
筒部の軸方向一端縁とを連続させる第一連続部と、この
第二円筒部の軸方向他端縁と上記第三円筒部の軸方向一
端縁とを連続させる第二連続部とを備えたものであり、 上記第二配管は、上記第一円筒部の内側に挿入自在な挿
入筒部と、この挿入筒部の基端部外周面から全周に亙り
直径方向外方に突出する状態で設けられて、その外径が
最大となる部分を上記第三円筒部の内側にのみ挿入自在
な突出部とを備えたものであり、 上記Ｏリングは、その軸方向一端縁を上記突出部の上記
挿入筒部側の側面の内径側部分に突き当てた状態でこの
挿入筒部の基端部に外嵌支持しており、更に、この挿入
筒部の先端側部分を上記第一円筒部の内側に、上記突出
部のうちの外径が最大となる部分を上記第三円筒部の内
側に、それぞれ挿入すると共に、上記突出部の上記挿入
筒部側の側面の外径側部分を上記第二連続部に突き当て
た状態で、上記挿入筒部の基端部外周面と上記第二円筒
面との間で全周に亙り弾性的に圧縮される配管用継手装
置に於いて、 上記突出部の外径が最大となる部分のうち軸方向に関し
て上記挿入筒部に最も近い部分からこの挿入筒部の先端
縁までの軸方向に関する寸法をＡとし、同じく上記突出
部の外径が最大となる部分のうち軸方向に関して上記挿
入筒部に最も近い部分から上記挿入筒部の基端部に外嵌
支持した上記Ｏリングの軸方向他端縁までの軸方向に関
する寸法をＢとし、上記第三円筒面の軸方向他端縁から
上記第一円筒面の軸方向一端縁までの軸方向に関する寸
法をＣとし、同じく上記第三円筒面の軸方向他端縁から
上記第二円筒面の軸方向他端縁までの軸方向に関する寸
法をＤとした場合に、これら各寸法Ａ〜Ｄが、Ａ≧Ｃ且
つＢ＜Ｄの関係を満たす事を特徴とする配管用継手装
置。A first pipe and a second pipe, each of which is made of metal, and an O-ring for maintaining a liquid-tight state of a connection portion between the first pipe and the second pipe; The pipe has a first cylindrical portion whose inner peripheral surface is a first cylindrical surface, and a second cylindrical surface whose inner peripheral surface is concentric with the first cylindrical surface and has a larger diameter than the first cylindrical surface. A second cylindrical portion, a third cylindrical portion having an inner peripheral surface concentric with the first and second cylindrical surfaces and a third cylindrical surface having a diameter larger than the second cylindrical surface, and the first cylindrical portion; A first continuous portion that connects the one axial end of the portion and the one axial end of the second cylindrical portion, the other axial end of the second cylindrical portion, and the one axial end of the third cylindrical portion. The second pipe is an insertion tube portion that can be inserted inside the first cylindrical portion and a base end outer peripheral surface of the insertion tube portion. A protruding portion that is provided so as to protrude outward in the diametrical direction over the entire circumference, and has a portion having the maximum outer diameter that can be inserted only inside the third cylindrical portion; The ring is externally fitted and supported on the base end of the insertion tube with one end in the axial direction abutting against the inner diameter side of the side surface of the protrusion on the side of the insertion tube. Inserting the tip side portion of the cylindrical portion inside the first cylindrical portion, and inserting the portion having the maximum outer diameter of the projecting portion inside the third cylindrical portion, and inserting the projecting portion into the third cylindrical portion. In a state where the outer diameter side portion of the side surface of the cylindrical portion is abutted against the second continuous portion, elastically over the entire circumference between the base outer peripheral surface of the insertion cylindrical portion and the second cylindrical surface. In the joint device for piping to be compressed, the insertion tube is axially arranged in a portion where the outer diameter of the protrusion is the largest. A is the dimension in the axial direction from the portion closest to the portion to the distal end edge of the insertion tube portion, and the portion closest to the insertion tube portion in the axial direction is also the portion where the outer diameter of the protrusion is the largest. The dimension in the axial direction up to the other end in the axial direction of the O-ring externally supported on the base end of the insertion tube portion is B, and the axis of the first cylindrical surface from the other end in the axial direction of the third cylindrical surface. If the dimension in the axial direction up to one direction edge is C, and the dimension in the axial direction from the other axial edge of the third cylindrical surface to the other axial edge of the second cylindrical surface is D, A pipe joint device wherein each of these dimensions A to D satisfies the relationship of A ≧ C and B <D.
側の端部に、第二円筒部の内側にがたつきなく挿入自在
な大径部を設けると共に、この大径部の軸方向端面にＯ
リングの軸方向一端面を突き当てている、請求項１に記
載した配管用継手装置。2. A large-diameter portion that can be inserted without rattling inside the second cylindrical portion at an end of the protruding portion on the side of the insertion cylinder portion with respect to the axial direction, and the large-diameter portion extends in the axial direction. O on the end face
The piping joint device according to claim 1, wherein one end surface of the ring in the axial direction is abutted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000092579A JP4104270B2 (en) | 2000-03-30 | 2000-03-30 | Piping joint device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000092579A JP4104270B2 (en) | 2000-03-30 | 2000-03-30 | Piping joint device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001280558A true JP2001280558A (en) | 2001-10-10 |
| JP4104270B2 JP4104270B2 (en) | 2008-06-18 |
Family
ID=18607893
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000092579A Expired - Fee Related JP4104270B2 (en) | 2000-03-30 | 2000-03-30 | Piping joint device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4104270B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003021290A (en) * | 2001-07-10 | 2003-01-24 | Toyo Radiator Co Ltd | Connection structure of resin pipe and tank |
| JP2004020111A (en) * | 2002-06-18 | 2004-01-22 | Toyo Radiator Co Ltd | Connecting structure of resin pipe to tank |
| JP2007247891A (en) * | 2006-02-17 | 2007-09-27 | Denso Corp | Pipe joint device, pipe joint structure of heat exchanger and installation method of pipe for heat exchanger |
| WO2014204039A1 (en) * | 2013-06-20 | 2014-12-24 | 주식회사 고산 | Refrigerant pipe connection structure for heat exchanger |
-
2000
- 2000-03-30 JP JP2000092579A patent/JP4104270B2/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003021290A (en) * | 2001-07-10 | 2003-01-24 | Toyo Radiator Co Ltd | Connection structure of resin pipe and tank |
| JP4588932B2 (en) * | 2001-07-10 | 2010-12-01 | 株式会社ティラド | Connection structure between resin pipe and tank |
| JP2004020111A (en) * | 2002-06-18 | 2004-01-22 | Toyo Radiator Co Ltd | Connecting structure of resin pipe to tank |
| JP2007247891A (en) * | 2006-02-17 | 2007-09-27 | Denso Corp | Pipe joint device, pipe joint structure of heat exchanger and installation method of pipe for heat exchanger |
| US7926853B2 (en) | 2006-02-17 | 2011-04-19 | Denso Corporation | Heat exchanger pipe joint |
| DE102007007571B4 (en) * | 2006-02-17 | 2021-02-25 | Denso Corporation | Pipe connecting device, pipe connecting structure of a heat exchanger and method of mounting a pipe to a heat exchanger |
| WO2014204039A1 (en) * | 2013-06-20 | 2014-12-24 | 주식회사 고산 | Refrigerant pipe connection structure for heat exchanger |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4104270B2 (en) | 2008-06-18 |
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