JP2002340249A - Pipe connecting structure - Google Patents

Pipe connecting structure

Info

Publication number
JP2002340249A
JP2002340249A JP2001148399A JP2001148399A JP2002340249A JP 2002340249 A JP2002340249 A JP 2002340249A JP 2001148399 A JP2001148399 A JP 2001148399A JP 2001148399 A JP2001148399 A JP 2001148399A JP 2002340249 A JP2002340249 A JP 2002340249A
Authority
JP
Japan
Prior art keywords
pipe
union
fitting
fitted
projection
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.)
Withdrawn
Application number
JP2001148399A
Other languages
Japanese (ja)
Inventor
Takashi Watabe
高志 渡部
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Denso Corp
Original Assignee
Denso Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Denso Corp filed Critical Denso Corp
Priority to JP2001148399A priority Critical patent/JP2002340249A/en
Publication of JP2002340249A publication Critical patent/JP2002340249A/en
Withdrawn legal-status Critical Current

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Abstract

PROBLEM TO BE SOLVED: To realize a pipe connecting structure capable of preventing drag by disposing a cylindrical pipe fitted in a fitting recessed part not to rotate in the fitting recessed part. SOLUTION: This pipe connecting structure has a male side joint 10 and a female side joint 20 for disposing a first coolant pipe 11 and a second coolant pipe 21 opposite to each other and coaxially connecting the same. A projecting part 16 is provided on a designated face of a bead part 13 projected in the midway of the first coolant pipe 11, and a recessed groove part 26 for fitting the projecting part 16 is provided at the tip of a union 22. The projecting part 16 is fitted in the groove part 26 to thereby prevent the union 22 and the first coolant pipe 11 from being whirl-stopped.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、配管同士を同軸的
に接続する配管接続構造に関するものであり、特にナッ
トの締め付け時に配管の相対位置がずれることなく接続
することのできる接続構造に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe connection structure for connecting pipes coaxially, and more particularly to a connection structure capable of connecting pipes without shifting their relative positions when nuts are tightened.

【0002】[0002]

【従来の技術】従来より、車両用空調装置などの冷凍サ
イクルに使用される配管接続構造として、例えば特許登
録公報第2760269号に記載されたバルジ形状配管
を用いたものが知られている。この公報の配管接続構造
は、図4に示すように、冷媒配管110、210を同軸
的に接続するための配管継手は雄側継手100と雌側継
手200とにより成る。この雄側継手100は先端側が
プレス加工(バルジ加工)により成形された冷媒配管1
10と、雌側継手200と結合するためのナット120
から構成されている。そして、冷媒配管110の途中に
はビード部130があり、このビード部130から先端
側に雌側継手200の嵌合凹部240に嵌入する嵌合凸
部140があり、この嵌合凸部140の中にはOリング
300を保持するための溝部150が形成されている。
2. Description of the Related Art Conventionally, as a piping connection structure used in a refrigeration cycle of a vehicle air conditioner or the like, a piping connection structure using, for example, a bulge-shaped piping described in Japanese Patent Publication No. 2760269 is known. In the pipe connection structure of this publication, as shown in FIG. 4, a pipe joint for connecting the refrigerant pipes 110 and 210 coaxially includes a male joint 100 and a female joint 200. The male joint 100 has a refrigerant pipe 1 whose tip end is formed by press working (bulge working).
10 and nut 120 for coupling with female joint 200
It is composed of There is a bead portion 130 in the middle of the refrigerant pipe 110, and a fitting convex portion 140 that fits into the fitting concave portion 240 of the female joint 200 on the distal end side from the bead portion 130. A groove 150 for holding the O-ring 300 is formed therein.

【0003】また、雌側継手200は円筒状の冷媒配管
210とユニオン220とがろう付けにより一体的に構
成されている。つまり、ユニオン220の内周側には、
冷媒配管210がろう付け接合される配管接続口23
0、およびこの配管接続口230と連通する筒状の中空
部を成し、雄側継手100を嵌入する嵌合凹部240が
形成されている。
The female joint 200 is formed by integrally brazing a cylindrical refrigerant pipe 210 and a union 220. That is, on the inner peripheral side of the union 220,
Pipe connection port 23 to which refrigerant pipe 210 is brazed and joined
0, and a fitting concave portion 240 which forms a cylindrical hollow portion communicating with the piping connection port 230 and into which the male joint 100 is fitted.

【0004】この雄側継手100と雌側継手200と
は、嵌合凹部240内に嵌合凸部140が嵌め合わさ
れ、ユニオン220にナット120を螺着することによ
り雄側継手100と雌側継手200とが接続されてい
る。なお、嵌合凹部240と嵌合凸部140との間は、
Oリング300によって気密性が保たれる。
The male joint 100 and the female joint 200 are fitted with a fitting convex part 140 in a fitting concave part 240 and a nut 120 is screwed into a union 220 to form the male joint 100 and the female joint 200. 200 is connected. In addition, between the fitting concave part 240 and the fitting convex part 140,
Airtightness is maintained by the O-ring 300.

【0005】[0005]

【発明が解決しようとする課題】しかしながら、上記構
成の配管接続構造によれば、嵌合凹部240内に嵌入す
る嵌合凸部140を有する冷媒配管110はユニオン2
20にナット120を締め付けるときに、冷媒配管11
0に形成されたビード部130面にナット120からの
面圧を受けて、ナット120の回転方向と同じ方向に冷
媒配管110が連れ回ってしまい、図5の一点鎖線に示
すように、所定の配管位置から外れてしまうことがあ
る。そして、冷媒配管110の取り回し位置が所定位置
から外れてしまうことにより他の部品と干渉してしまう
などの問題がある。
However, according to the pipe connection structure having the above-described structure, the refrigerant pipe 110 having the fitting projection 140 fitted into the fitting recess 240 is not connected to the union 2.
When the nut 120 is tightened to the refrigerant pipe 11,
When the surface pressure of the nut 120 is applied to the surface of the bead portion 130 formed at zero, the refrigerant pipe 110 is rotated in the same direction as the rotation direction of the nut 120, and as shown by a dashed line in FIG. It may come off from the piping position. Then, there is a problem in that the routing position of the refrigerant pipe 110 deviates from a predetermined position and interferes with other components.

【0006】そこで、本発明の目的は、上記点を鑑みた
ものであって、嵌合凹部内に嵌入される円筒状の配管が
嵌合凹部内で回転しないように配設することで、連れ回
りを防止することのできる配管接続構造の提供をするこ
とにある。
In view of the above, an object of the present invention is to provide a cylindrical pipe which is fitted into a fitting recess so as not to rotate in the fitting recess. An object of the present invention is to provide a pipe connection structure capable of preventing rotation.

【0007】[0007]

【課題を解決するための手段】上記目的を達成するため
に、請求項1ないし請求項3に記載の技術的手段を採用
する。すなわち、請求項1に記載の発明では、第1配管
(11)を有する雄側継手(10)と、第2配管(2
1)を有する雌側継手(20)とを備えるものであっ
て、雄側継手(10)は、雌側継手(20)に着脱可能
に螺着されるナット(12)と、先端が円筒状に形成さ
れた嵌合凸部(14)と外方へ環状に突出形成されたビ
ード部(13)とを有し、雌側継手(20)は、内周側
に嵌合凸部(14)を嵌入する円筒状の嵌合凹部(2
4)と、外周側にナット(12)と螺着するネジ部(2
5)とが形成されたユニオン(22)を有し、雄側継手
(10)と雌側継手(20)とを接続する配管接続構造
において、雄側継手(10)と雌側継手(20)とは、
嵌合凸部(14)またはビード部(13)のいずれかと
ユニオン(22)とが当接する部位に回り止め部(1
6、26)が設けられるとともに、嵌合凸部(14)が
嵌合凹部(24)内に嵌入され、第1配管(11)が連
れ回りがなく接続するように構成されることを特徴とし
ている。
In order to achieve the above object, the technical means described in claims 1 to 3 is adopted. That is, according to the first aspect of the present invention, the male joint (10) having the first pipe (11) and the second pipe (2)
A male joint (10) having a nut (12) detachably screwed to the female joint (20) and a cylindrical end. The female joint (20) has a fitting convex portion (14) formed on the inner peripheral side of the female joint (20). Into the cylindrical fitting recess (2)
4) and a screw portion (2) screwed to the nut (12) on the outer peripheral side.
5) in a pipe connection structure for connecting the male joint (10) and the female joint (20) with the union (22) formed with the male joint (10) and the female joint (20). Is
The rotation preventing portion (1) is provided at a portion where either the fitting projection (14) or the bead portion (13) comes into contact with the union (22).
6, 26) are provided, the fitting projection (14) is fitted into the fitting recess (24), and the first pipe (11) is configured to be connected without rotation. I have.

【0008】請求項1に記載の発明によれば、嵌合凹部
(24)内に嵌入された第1配管(11)の嵌合凸部
(14)が嵌合凹部(24)内で自在に回転できるよう
になっている従来構成では、ユニオン(22)にナット
(12)を締め付けるときに、第1配管(11)に形成
されたビード部(13)面にナット(12)からの面圧
を受けて、ナット(12)の回転方向と同じ方向に第1
配管(11)が連れ回ってしまう。そこで、本発明では
嵌合凸部(14)またはビード部(13)のいずれかと
ユニオン(22)とが当接する部位に回り止め部(1
6、26)が設けられることにより、ナット(12)を
締め付けるときに、第1配管(11)がユニオン(2
2)に保持されているため上述の連れ回りが防止でき
る。この結果、配管の取り回し位置がずれることない。
According to the first aspect of the present invention, the fitting protrusion (14) of the first pipe (11) fitted in the fitting recess (24) is freely movable in the fitting recess (24). In the conventional configuration that can rotate, when the nut (12) is tightened to the union (22), the surface pressure from the nut (12) is applied to the bead portion (13) formed in the first pipe (11). Receiving the first rotation in the same direction as the rotation direction of the nut (12).
The pipe (11) goes around. Therefore, in the present invention, the rotation preventing portion (1) is provided at a portion where either the fitting projection (14) or the bead portion (13) abuts on the union (22).
6, 26), when the nut (12) is tightened, the first pipe (11) is union (2).
Since it is held in 2), the above-mentioned entrainment can be prevented. As a result, the piping position does not shift.

【0009】請求項2に記載の発明では、回り止め部
(16、26)は、ユニオン(22)の先端と当接する
ビード部(13)の所定の面に凸状の突起部(16)
と、ユニオン(22)の先端に突起部(16)を嵌入す
る凹状の溝部(26)とが設けられ、溝部(26)に突
起部(16)が嵌入されることでユニオン(22)と第
1配管(11)とが回り止めされていることを特徴とし
ている。
According to the second aspect of the present invention, the rotation preventing portion (16, 26) is a projection (16) projecting on a predetermined surface of the bead portion (13) in contact with the tip of the union (22).
And a concave groove (26) for fitting the projection (16) at the tip of the union (22), and the projection (16) is fitted into the groove (26) to form the union (22) and the It is characterized in that it is prevented from rotating with one pipe (11).

【0010】請求項2に記載の発明によれば、具体的に
はビード部(13)の所定の面に凸状の突起部(16)
と、ユニオン(22)の先端に突起部(16)を嵌入す
る凹状の溝部(26)との回り止め部(16、26)が
設けられることにより、第1配管(11)がユニオン
(22)に保持されているため上述の連れ回りが防止で
きる。
According to the second aspect of the present invention, specifically, a convex projection (16) is formed on a predetermined surface of the bead (13).
And a concave groove (26) into which the projection (16) is fitted at the tip of the union (22), so that the first pipe (11) can be connected to the union (22). , The above-described entrainment can be prevented.

【0011】請求項3に記載の発明では、回り止め部
(16、26)は、ユニオン(22)の先端と当接する
ビード部(13)の根元近傍の所定の嵌合凸部(14)
面に凸状の突起部(16)と、ユニオン(22)の先端
に突起部(16)を嵌入する凹状の溝部(26)とが設
けられ、溝部(26)に突起部(16)が嵌入されるこ
とでユニオン(22)と第1配管(11)とが回り止め
されていることを特徴としている。
According to the third aspect of the present invention, the rotation preventing portions (16, 26) are provided with a predetermined fitting convex portion (14) near the root of the bead portion (13) in contact with the tip of the union (22).
A protrusion (16) having a convex shape on the surface and a concave groove (26) for fitting the protrusion (16) at the tip of the union (22) are provided, and the protrusion (16) is fitted into the groove (26). Thus, the union (22) and the first pipe (11) are prevented from rotating.

【0012】請求項3に記載の発明によれば、また、ビ
ード部(13)の根元近傍の所定の嵌合凸部(14)面
に凸状の突起部(16)と、ユニオン(22)の先端に
突起部(16)を嵌入する凹状の溝部(26)とが設け
られることにより、第1配管(11)がユニオン(2
2)に保持されているため上述の連れ回りが防止でき
る。
According to the third aspect of the present invention, the protrusion (16) having a convex shape on the surface of the predetermined fitting convex portion (14) near the root of the bead portion (13), and the union (22). The first pipe (11) is provided with a union (2) by providing a concave groove (26) in which the projection (16) is fitted.
Since it is held in 2), the above-mentioned entrainment can be prevented.

【0013】なお、上記各手段の括弧内の符号は、後述
する実施形態の具体的手段との対応関係を示すものであ
る。
The reference numerals in parentheses of the above means indicate the correspondence with the concrete means of the embodiment described later.

【0014】[0014]

【発明の実施の形態】以下、本発明の一実施形態による
配管接続構造を図1および図2に基いて説明する。ま
ず、図1は、車両用空調装置の冷凍サイクルに用いられ
る両冷媒配管11、12が同軸的に接続される配管継手
に本発明が適用された例を示している。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A piping connection structure according to one embodiment of the present invention will be described below with reference to FIGS. First, FIG. 1 shows an example in which the present invention is applied to a pipe joint in which both refrigerant pipes 11 and 12 used for a refrigeration cycle of a vehicle air conditioner are coaxially connected.

【0015】この配管継手は、雄側継手10と雌側継手
20より成り、雄側継手10は先端側がプレス加工(バ
ルジ加工)により成形された円筒状の第1冷媒配管11
と、雌側継手20と結合するためのナット12から構成
されている。ここで、第1冷媒配管11は、通常、金属
製(アルミニウム、銅、真鍮、スレンレス、鉄等)の材
料よりなり、本実施形態では、アルミニウムのA300
3を使用している。
This pipe joint comprises a male joint 10 and a female joint 20. The male joint 10 has a cylindrical first refrigerant pipe 11 whose tip end is formed by press working (bulge processing).
And a nut 12 for coupling with the female joint 20. Here, the first refrigerant pipe 11 is usually made of a metal (aluminum, copper, brass, stainless steel, iron, etc.) material.
3 is used.

【0016】また、ナット12は金属製(アルミニウ
ム、銅、真鍮、スレンレス、鉄等)の材料よりなり、本
実施形態ではアルミニウムのA6061を使用してい
る。そして、第1冷媒配管11の途中には環状のビード
部13が外方へ半径方向に突出形成されている。このビ
ード部13から先端側には雌側継手20の嵌合凹部24
(後述する)に嵌入する嵌合凸部14が形成され、この
嵌合凸部14の中にはOリング30を保持するための溝
部15が形成されている。
The nut 12 is made of a metal (aluminum, copper, brass, stainless steel, iron, or the like) material. In this embodiment, aluminum A6061 is used. An annular bead portion 13 is formed radially outward in the middle of the first refrigerant pipe 11. From the bead portion 13 to the distal end side, the fitting recess 24 of the female joint 20 is provided.
A fitting protrusion 14 that fits into a (described later) is formed, and a groove 15 for holding the O-ring 30 is formed in the fitting protrusion 14.

【0017】また、雌側継手20は円筒状の第2冷媒配
管21とユニオン22がろう付けにより構成されてい
る。ここで、第2冷媒配管21は、通常、金属製(アル
ミニウム、銅、真鍮、スレンレス、鉄等)の材料よりな
り、本実施形態では外周側にろう材としての皮材A40
04をクラッドした、アルミニウムのA3004を使用
している。また、ユニオン22も金属製(アルミニウ
ム、銅、真鍮、スレンレス、鉄等)の材料よりなり、本
実施形態ではアルミニウムのDA7N11を使用してい
る。
The female joint 20 is formed by brazing a cylindrical second refrigerant pipe 21 and a union 22. Here, the second refrigerant pipe 21 is usually made of a metal (aluminum, copper, brass, stainless steel, iron, or the like) material, and in the present embodiment, a cladding material A40 as a brazing material is provided on the outer peripheral side.
Aluminum cladding 04 is used. The union 22 is also made of a metal (aluminum, copper, brass, stainless steel, iron, etc.) material, and in this embodiment, aluminum DA7N11 is used.

【0018】そして、ユニオン22の内周側の一端(図
1の右側)には第2冷媒配管21がろう付け接合される
配管接続口23があり、他端(図1の中央側)には配管
接続口23と連通する筒状の中空部を成し、雄側継手1
0を嵌入する嵌合凹部24が形成されている。そして、
ユニオン22の外周面にはナット12と着脱可能に螺着
するネジ部25が形成されている。
At one end (right side in FIG. 1) on the inner peripheral side of the union 22, there is provided a pipe connection port 23 to which the second refrigerant pipe 21 is brazed and connected, and at the other end (center side in FIG. 1). Forming a cylindrical hollow portion communicating with the pipe connection port 23,
0 is formed therein. And
A screw portion 25 is formed on the outer peripheral surface of the union 22 so as to be detachably screwed to the nut 12.

【0019】この雄側継手10と雌側継手20とは、嵌
合凹部24内に嵌合凸部14が嵌め合わされるようにな
っている。ところが、以上の構成では嵌合凸部14が嵌
合凹部24内を自在に回転できるように構成されている
ため、本発明ではビード部13とユニオン22とが当接
する部位に回り止め部を設けたので以下説明する。
The male joint 10 and the female joint 20 are configured such that the fitting projection 14 is fitted into the fitting recess 24. However, in the above configuration, since the fitting projection 14 is configured to be able to freely rotate in the fitting recess 24, in the present invention, a detent portion is provided at a portion where the bead portion 13 and the union 22 abut. Therefore, it will be described below.

【0020】図1および図2に示すように、ユニオン2
2の先端がビード部13に当接する部位に凸状の突起部
16を設けるとともに、ユニオン22の先端に凸状の突
起部16を嵌入する凹状の溝部26を設けている。これ
により、嵌合凸部14が嵌合凹部24内に嵌入されると
ともに、突起部16が溝部26に嵌入されるため、回り
止めとなってユニオン22と第1冷媒配管11との所定
の取付位置が定まり、ユニオン22にナット12が締め
付けられても第1冷媒配管11が連れ回りを生ずること
がない。
As shown in FIGS. 1 and 2, the union 2
A projection 16 is provided at a position where the tip of the second 2 contacts the bead portion 13, and a concave groove 26 into which the projection 16 is fitted is provided at the tip of the union 22. As a result, the fitting projection 14 is fitted into the fitting recess 24 and the projection 16 is fitted into the groove 26, so that the fitting is prevented from rotating and the predetermined mounting of the union 22 and the first refrigerant pipe 11 is performed. Even if the position is determined and the nut 12 is fastened to the union 22, the first refrigerant pipe 11 does not rotate.

【0021】なお、嵌合凹部24と嵌合凸部14との間
は、Oリング30によって気密性が保たれる。ここで、
Oリング30はドーナツ状のリング形状であり、断面は
円形形状である。また、Oリング30はゴム等の弾力性
のある材料を用いている。
The airtightness is maintained by the O-ring 30 between the fitting concave portion 24 and the fitting convex portion 14. here,
The O-ring 30 has a donut-shaped ring shape and a circular cross section. The O-ring 30 is made of an elastic material such as rubber.

【0022】また、以上の配管継手は、図1に示すよう
に、雌側継手20の嵌合凹部24内に雄側継手10の嵌
合凸部14が嵌め合わされるとともに、突起部16が溝
部26に嵌入され、嵌合凹部24の外周側に設けられた
ネジ部25にナット12を締めつけることにより、雌側
継手20と雄側継手10とが固定される。
As shown in FIG. 1, the fitting joint 14 of the male joint 10 is fitted into the fitting recess 24 of the female joint 20 and the projection 16 is formed by a groove. 26, and the female joint 20 and the male joint 10 are fixed by tightening the nut 12 to a screw portion 25 provided on the outer peripheral side of the fitting concave portion 24.

【0023】以上の一実施形態の配管接続構造によれ
ば、ビード部13の所定の面に凸状の突起部16と、ユ
ニオン22の先端に突起部16を嵌入する凹状の溝部2
6との回り止め部が設けられることにより、ユニオン2
2と第1冷媒配管11との所定の取付位置が定まり、ユ
ニオン22にナット12が締め付けられても第1冷媒配
管11が連れ回りを生ずることがない。従って、従来で
は第1冷媒配管11の取り回し位置が所定位置よりも外
れてしまうことにより、他の部品と干渉してしまうなど
の不具合は発生しない。
According to the pipe connection structure of the above-described embodiment, the convex portion 16 is formed on the predetermined surface of the bead portion 13 and the concave groove portion 2 is inserted into the tip of the union 22.
6 is provided with a non-rotating portion, so that the union 2
A predetermined mounting position between the second refrigerant pipe 11 and the first refrigerant pipe 11 is determined, and even when the nut 12 is tightened to the union 22, the first refrigerant pipe 11 does not rotate. Therefore, in the related art, since the routing position of the first refrigerant pipe 11 deviates from the predetermined position, a problem such as interference with other components does not occur.

【0024】(他の実施形態)以上の一実施形態では、
ビード部13の所定の面に凸状の突起部16と、ユニオ
ン22の先端に凹状の溝部26とを設けた回り止め部に
ついて説明したが、これに限らず、ビード部13の根元
近傍の嵌合凸部14の外周面に突起部16を設けても良
い。図3に示すように、Oリング30を保持するための
溝部15とビード部13との間の嵌合凸部14の外周面
に凸状の突起部16を外方に突出させるように設けると
ともに、ユニオン22の先端に凸状の突起部16を嵌入
する凹状の溝部26を設けている。これにより、上記一
実施形態と同様の効果を奏する。
(Other Embodiments) In one embodiment described above,
The detent part having the convex part 16 provided on the predetermined surface of the bead part 13 and the concave groove part 26 provided at the tip of the union 22 has been described. However, the present invention is not limited to this. A projection 16 may be provided on the outer peripheral surface of the mating projection 14. As shown in FIG. 3, a convex protrusion 16 is provided on the outer peripheral surface of the fitting convex portion 14 between the groove portion 15 for holding the O-ring 30 and the bead portion 13 so as to project outward. A concave groove 26 is provided at the tip of the union 22 for fitting the convex protrusion 16. Thereby, the same effect as in the above-described embodiment can be obtained.

【0025】また、以上の実施形態では、回り止め部を
一個所のみ設けたが、2〜3個所設けると良い。これに
より、突起部16および溝部26の回り止め部が受ける
ナット12の締め付け荷重が円周方向に分散されること
で回り止め部の損傷がない。
Further, in the above embodiment, only one detent portion is provided, but two or three detent portions may be provided. Accordingly, the tightening load of the nut 12 received by the rotation preventing portions of the protrusion 16 and the groove portion 26 is dispersed in the circumferential direction, so that the rotation preventing portion is not damaged.

【0026】また、本発明の実施にあたっては、車両用
空調装置の冷凍サイクルにおける配管接続に限ることな
く、他の各種装置に採用される配管接続にも本発明を適
用して実施しても良い。
In practicing the present invention, the present invention is not limited to the pipe connection in the refrigeration cycle of the vehicle air conditioner, but may be applied to the pipe connection employed in other various devices. .

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明の一実施形態における冷凍サイクル用配
管継手の全体構成を示す縦断面図である。
FIG. 1 is a longitudinal sectional view showing the entire configuration of a refrigeration cycle pipe joint according to an embodiment of the present invention.

【図2】本発明の一実施形態における配管継手に設けら
れた回り止め部を示す分解斜視図である。
FIG. 2 is an exploded perspective view showing a rotation preventing portion provided in the pipe joint according to the embodiment of the present invention.

【図3】他の実施形態における配管継手に設けられた回
り止め部を示す分解斜視図である。
FIG. 3 is an exploded perspective view showing a rotation preventing portion provided in a pipe joint according to another embodiment.

【図4】従来技術における冷凍サイクル用配管継手の全
体構成を示す縦断面図である。
FIG. 4 is a longitudinal sectional view showing the entire configuration of a conventional refrigeration cycle pipe joint.

【図5】従来技術における冷凍サイクル用配管継手の取
り回し状態を示す斜視図である。
FIG. 5 is a perspective view showing a state in which a piping joint for a refrigeration cycle according to the related art is handled.

【符号の説明】[Explanation of symbols]

10…雄側継手 11…第1冷媒配管(第1配管) 12…ナット 13…ビード部 14…嵌合凸面 16…突起部 20…雌側継手 21…第2冷媒配管(第2配管) 22…ユニオン 24…嵌合凹面 25…ネジ部 26…溝部 DESCRIPTION OF SYMBOLS 10 ... Male side joint 11 ... 1st refrigerant pipe (1st pipe) 12 ... Nut 13 ... Bead part 14 ... Fitting convex surface 16 ... Projection part 20 ... Female side joint 21 ... 2nd refrigerant pipe (2nd pipe) 22 ... Union 24 ... Concave concave surface 25 ... Screw part 26 ... Groove part

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 第1配管(11)を有する雄側継手(1
0)と、第2配管(21)を有する雌側継手(20)と
を備えるものであって、 前記雄側継手(10)は、前記雌側継手(20)に着脱
可能に螺着されるナット(12)と、先端が円筒状に形
成された嵌合凸部(14)と外方へ環状に突出形成され
たビード部(13)とを有し、 前記雌側継手(20)は、内周側に前記嵌合凸部(1
4)を嵌入する円筒状の嵌合凹部(24)と、外周側に
前記ナット(12)と螺着するネジ部(25)とが形成
されたユニオン(22)を有し、前記雄側継手(10)
と前記雌側継手(20)とを接続する配管接続構造にお
いて、 前記雄側継手(10)と前記雌側継手(20)とは、前
記嵌合凸部(14)または前記ビード部(13)のいず
れかと前記ユニオン(22)とが当接する部位に回り止
め部(16、26)が設けられるとともに、前記嵌合凸
部(14)が前記嵌合凹部(24)内に嵌入され、前記
第1配管(11)が連れ回りがなく接続するように構成
されることを特徴とする配管接続構造。
A male joint (1) having a first pipe (11).
0) and a female joint (20) having a second pipe (21), wherein the male joint (10) is detachably screwed to the female joint (20). The female joint (20) includes a nut (12), a fitting protrusion (14) having a cylindrical end, and a bead (13) formed to protrude annularly outward. The fitting projection (1
4) a union (22) formed with a cylindrical fitting recess (24) into which the nut (12) is fitted, and a screw part (25) screwed to the nut (12) on the outer peripheral side; (10)
In the pipe connection structure for connecting the male joint (10) and the female joint (20), the male joint (10) and the female joint (20) are connected to the fitting protrusion (14) or the bead part (13). And a detent part (16, 26) is provided at a position where the union (22) abuts on the union (22), and the fitting projection (14) is fitted into the fitting recess (24), A pipe connection structure, wherein one pipe (11) is configured to be connected without co-rotation.
【請求項2】 前記回り止め部(16、26)は、前記
ユニオン(22)の先端と当接する前記ビード部(1
3)の所定の面に凸状の突起部(16)と、前記ユニオ
ン(22)の先端に前記突起部(16)を嵌入する凹状
の溝部(26)とが設けられ、前記溝部(26)に前記
突起部(16)が嵌入されることで前記ユニオン(2
2)と前記第1配管(11)とが回り止めされているこ
とを特徴とする請求項1に記載の配管接続構造。
2. The bead portion (1) which is in contact with a tip of the union (22).
3) A convex projection (16) is provided on a predetermined surface, and a concave groove (26) into which the projection (16) is fitted is provided at a tip of the union (22), and the groove (26) is provided. The projection (16) is fitted into the union (2).
2. The pipe connection structure according to claim 1, wherein the second pipe and the first pipe are prevented from rotating. 3.
【請求項3】 前記回り止め部(16、26)は、前記
ユニオン(22)の先端と当接する前記ビード部(1
3)の根元近傍の所定の前記嵌合凸部(14)面に凸状
の突起部(16)と、前記ユニオン(22)の先端に前
記突起部(16)を嵌入する凹状の溝部(26)とが設
けられ、前記溝部(26)に前記突起部(16)が嵌入
されることで前記ユニオン(22)と前記第1配管(1
1)とが回り止めされていることを特徴とする請求項1
に記載の配管接続構造。
3. The bead portion (1) which contacts the tip of the union (22) with the detent portion (16, 26).
3) A convex protrusion (16) on the surface of the fitting convex portion (14) near the base, and a concave groove (26) into which the protrusion (16) is fitted at the tip of the union (22). ) Is provided, and the union (22) and the first pipe (1) are fitted by fitting the protrusion (16) into the groove (26).
And (1) is prevented from rotating.
Piping connection structure described in 1.
JP2001148399A 2001-05-17 2001-05-17 Pipe connecting structure Withdrawn JP2002340249A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2001148399A JP2002340249A (en) 2001-05-17 2001-05-17 Pipe connecting structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2001148399A JP2002340249A (en) 2001-05-17 2001-05-17 Pipe connecting structure

Publications (1)

Publication Number Publication Date
JP2002340249A true JP2002340249A (en) 2002-11-27

Family

ID=18993724

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2001148399A Withdrawn JP2002340249A (en) 2001-05-17 2001-05-17 Pipe connecting structure

Country Status (1)

Country Link
JP (1) JP2002340249A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010107163A (en) * 2008-10-31 2010-05-13 Sumisho Metalex Corp Ceiling-mounted radiant air-conditioning panel
JP2013127213A (en) * 2011-12-19 2013-06-27 Denso Corp Pipe joint structure
JP2015186500A (en) * 2014-03-26 2015-10-29 ホシザキ電機株式会社 Tubular instrument cleaning holder and cleaning device which houses the tubular instrument cleaning holder in cleaning tank
US11988307B2 (en) 2018-09-18 2024-05-21 Asml Netherlands B.V. Anti-rotation fluid connection

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010107163A (en) * 2008-10-31 2010-05-13 Sumisho Metalex Corp Ceiling-mounted radiant air-conditioning panel
JP2013127213A (en) * 2011-12-19 2013-06-27 Denso Corp Pipe joint structure
JP2015186500A (en) * 2014-03-26 2015-10-29 ホシザキ電機株式会社 Tubular instrument cleaning holder and cleaning device which houses the tubular instrument cleaning holder in cleaning tank
US11988307B2 (en) 2018-09-18 2024-05-21 Asml Netherlands B.V. Anti-rotation fluid connection

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