JP4756804B2 - Connection structure and connection method between metal tube and eye joint - Google Patents
Connection structure and connection method between metal tube and eye joint Download PDFInfo
- Publication number
- JP4756804B2 JP4756804B2 JP2001303355A JP2001303355A JP4756804B2 JP 4756804 B2 JP4756804 B2 JP 4756804B2 JP 2001303355 A JP2001303355 A JP 2001303355A JP 2001303355 A JP2001303355 A JP 2001303355A JP 4756804 B2 JP4756804 B2 JP 4756804B2
- Authority
- JP
- Japan
- Prior art keywords
- eye joint
- pipe
- welding
- eye
- joint body
- 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.)
- Expired - Fee Related
Links
Description
【０００１】
【産業上の利用分野】
本発明は、自動車用配管、各種機械・装置用配管、その他の金属管とアイジョイントの接続構造及びその接続方法に係るもので、アイジョイントと金属管の接続を容易な接続方法で廉価に行い、信頼性の高い気密性を得るものである。
【０００２】
【従来の技術】
従来、自動車用配管、各種機械・装置用配管、その他の金属管、特に自動車用の燃料、エアー、潤滑油等を流通する配管を、アンダーフロアパネル、前面パネル等に配設する際に、該配管を基体に直交して接続する継手として、金属製のアイジョイントが一般的に使用されている。このアイジョイントは、例えば鋼材を冷間鍛造して球状に形成したアイジョイント本体の側面に、配管挿入用の枝管をアイボルトと直交方向に突出形成する。そして、アイジョイント本体の内部と枝管内部とを加工して、燃料その他の流体の流路を、互いに連通可能に形成している。このように形成したアイジョイントの枝管内に配管を挿入し、枝管の先端と配管の外周面とをろう付けして、アイジョイントと配管とを接続していた。
【０００３】
【発明が解決しようとする課題】
しかしながら、上述の如き従来技術では、アイジョイントの加工や配管との接続に、熟練作業による複雑な技術と多くの工数が掛かり、製造コストが高価であった。また、ろう付け作業時に使用するフラックス等により、作業環境や人体に影響を与える等の問題もあった。また、ろう付け作業では、亜鉛メッキ等の防錆処理済みの配管を用いると、ろう付け時の熱で亜鉛メッキが剥げてしまう。そのため、防錆処理を施していない配管を使用し、ろう付け終了後に、亜鉛メッキ等の防錆処理を行う必要があり、製造工程を更に増やしていた。
【０００４】
また、実公昭６０−５１９０号公報記載の考案の如く、アイジョイントを樹脂で形成して、加工作業を簡易化した製品が存在する。この従来技術では、枝管先端のシート面に、フレア加工した配管を当接した後に、金属製の接続ナットで枝管と配管とを外周から締め付け、双方の接続を行っていた。従って、アイジョイントと配管との接続にろう付けを必要とせず、防錆処理済みの配管を使用でき、作業環境や人体にも安全であった。しかし、この従来技術では、枝管の外周に金属螺子環を融着固定しているので、枝管先端のシート面に配管を当接するには、配管にフレア加工を施して塑性変形させる必要があり、配管の製造に手間や多くの技術を必要とする。また、金属製の接続ナットを用いる等、部品点数が多く、組み付けに多くの手数を必要としていた。
【０００５】
本発明は上述の如き課題を解決しようとするものであって、樹脂でアイジョイントを形成し、廉価で加工性に優れた製品を得るとともに、防錆処理等の表面処理を施した金属製の配管とアイジョイントとの接続を容易で安全な方法で行う事を可能とする。その結果、アイジョイントと配管の製造及び接続作業の生産性を向上するとともに、作業環境への影響を防いで人体への安全性も確保する。また、この配管とアイジョイントとの接続構造が、信頼性の高い気密性と耐久性を持つようにする。
【０００６】
【課題を解決するための手段】
本発明は上述の如き課題を解決するため、第１の発明は、内部に設けた環状凹溝に連なって軸芯部にアイボルトの取付孔を貫通形成したアイジョイント本体と、樹脂製の枝管をモールディング成形により一端部に固定した金属製の配管とから成り、この配管に固定した枝管を、アイジョイント本体の環状凹溝に接続するアイボルトと直交方向に、アイジョイント本体に溶着固定して成るものである。
【０００７】
また、第２の発明は、樹脂製の枝管を、金属製の配管の一端部にモールディング成形により固定する工程と、この配管に固定した枝管の溶着面を、アイジョイント本体の側面の溶着面に、環状凹溝に挿入接続するアイボルトと直交方向に接触配置し、溶着手段を加えてアイジョイント本体と枝管を溶着固定する工程とにより、アイジョイント本体と配管とを接続する方法である。
【０００８】
また、アイジョイント本体は、枝管との溶着面の外周に、樹脂材を溶着シールしても良い。
【０００９】
また、溶着手段は、超音波振動加熱溶着又は高周波誘導加熱溶着であっても良い。
【００１０】
【作用】
本発明は上述の如く構成したものであり、第１、第２の発明のアイジョイントは、アイジョイント本体と枝管とを別個に形成している。そして、アイジョイントと配管とを接続する第１の工程では、まず、防錆処理済みの金属製配管の一端部に、モールディング成形により樹脂製の枝管を固定する。このような成形方法により、枝管と配管とを容易に分離不能に強固に接続可能であるし、信頼性の高い気密性も得る事ができる。
【００１１】
そして、次工程では、アイジョイント本体に、アイボルトに直交する方向で、枝管を接触配置する。次に、この接触部に超音波振動加熱溶着、高周波誘導加熱溶着等の溶着手段を加え、アイジョイント本体の側面に枝管を溶着固定する。この枝管の溶着固定により、枝管を介してアイジョイントと配管とが強固に接続し、優れた気密性を得るとともに、接続作業も容易で安全に行う事ができる。
【００１２】
また、上記第１、第２発明に於いて、アイジョイント本体と枝管との溶着固定後、互いの溶着面の外周に、樹脂材を溶着シールすれば、アイジョイント本体と枝管との接続強度が更に高まるし、気密性に対する信頼性は、更に向上する。
【００１３】
【実施例】
以下、本発明を自動車の流体供給機構に実施した実施例１、２を、図１〜４に於て説明すれば、(１)は金属製の配管で、アンダーフロアパネル、前面パネル等に配設し、燃料タンクからエンジンルームへ燃料を供給するフューエルメイン配管、エンジンからの余剰燃料を燃料タンクへ戻すフューエルリターン配管、燃料タンク内の燃料の蒸気をエンジンルーム内のキャニスターに吸着させるためのエバポ配管、吸気の負圧を利用するバキューム配管、オイル配管等である。これらの配管(１)は、自動車用の燃料、エアー、潤滑油等を流通する基体(２)から、直交方向に分岐して前記パネル内に配設されている。
【００１４】
そして、前記基体(２)に、直交方向に分岐接続する配管(１)を、アイジョイント(３)を用いて接続する際の、接続構造と接続方法を詳細に説明する。まず、アイジョイント(３)は、図１、図２に示す如く、球形のアイジョイント本体(５)の内部に、環状凹溝(４)を設け、この環状凹溝(４)に連なって軸芯部にアイボルト(１０)の取付孔(７)(８)を設けている。
【００１５】
そして、図３、４に示す如く、アイジョイント本体(５)と枝管(６)とを別個に形成し、後工程で双方を溶着固定している。このようなアイジョイント(３)と配管(１)と接続するには、実施例１では、第１工程にて、外表面に亜鉛メッキ、樹脂コーティング等により予め防錆処理を施した金属製の配管(１)の一端部に、樹脂製の枝管(６)をモールディング成形により固定する。また、アイジョイント本体(５)を、枝管(６)とは別個に成形する。
【００１６】
次工程では、アイジョイント本体(５)の側面に設けた流通口(２７)の外周面に、枝管(６)を接触配置する。そして、この互いに接触した溶着面(２４)に超音波振動加熱溶着、高周波誘導加熱溶着等の溶着手段を加え、アイジョイント本体(５)と枝管(６)とを溶着固定する事により、アイジョイント(３)と配管(１)との接続が完了する。
【００１７】
このように、アイジョイント本体(５)と枝管(６)とを別個に成形して、後に溶着固定することにより、アイジョイント(３)と配管(１)との接続構造に、信頼性の高い気密性と強度を持たせる事ができ、基体(２)と配管(１)間の流体の流れを直交方向に円滑に変える事ができる。また、各作業を安全かつ容易に行え、生産性も向上する。
【００１８】
また、実施例２では、実施例１と同様の手順で、アイジョイント本体(５)と枝管(６)とを互いに溶着固定した後、図４に示す如く、互いの溶着面(２４)の外周に、樹脂を溶着シールしてシール部(２６)を設けている。このシール部(２６)の溶着も、超音波振動加熱溶着や、高周波誘導加熱溶着で容易に行う事ができる。このようにシール部(２６)を設ける事により、実施例１よりも製造の手間や材料コストは増えるが、枝管(６)とアイジョイント本体(５)との接続強度が更に高まり、気密性に対する信頼性と耐久性を更に向上させる事が可能となる。
【００１９】
【発明の効果】
本発明は上述の如く構成したもので、自動車用配管、各種機械・装置用配管、その他の金属管とアイジョイントの接続構造が、信頼性の高い気密性と耐久性を持つものとなる。従って、流体の流れ方向が互いに直交する配管と基体間で、流体の流通を、アイジョイントを介して円滑に行う事ができる。また、配管とアイジョイントとの接続は、金属によるろう付けではなく樹脂の溶着により行うので、熟練技術や多くの工数を必要とせず、容易な方法で行う事ができ、作業環境や人体への影響も防ぐ事ができる。また、予め防錆処理を施した配管を用いる事ができ、接続作業時の手数を更に省く事ができる。従って、アイジョイントの製造及び配管との接続作業を効率的に行って、生産性を向上させる事ができる。
【図面の簡単な説明】
【図１】 本発明の実施例１で、アイジョイントと配管との接続構造の平面図である。
【図２】 図１のＡ−Ａ線断面図。
【図３】 本発明の実施例１であり、樹脂製の枝管を固定した配管を、アイジョイント本体に溶着固定した状態の断面図。
【図４】 本発明の第２実施例であり、アイジョイント本体に枝管を溶着固定し、互いの溶着面外周に、樹脂材を溶着シールした状態の断面図。
【符号の説明】
１ 配管
４ 環状凹溝
５ アイジョイント本体
６ 枝管
７ 取付孔
８ 取付孔
１０ アイボルト
１１ 内周面[0001]
[Industrial application fields]
The present invention relates to piping for automobiles, piping for various machines / equipment, other metal pipes and eye joints, and a method for connecting the same. , To obtain reliable and airtightness.
[0002]
[Prior art]
Conventionally, when pipes for automobiles, pipes for various machines / equipment, other metal pipes, especially automobile fuel, air, lubricating oil, etc. are disposed on the under floor panel, front panel, etc. A metal eye joint is generally used as a joint for connecting a pipe perpendicularly to a base. In this eye joint, for example, a branch pipe for inserting a pipe protrudes in a direction perpendicular to the eye bolt on the side surface of an eye joint body formed in a spherical shape by cold forging a steel material. Then, the inside of the eye joint body and the inside of the branch pipe are processed so that fuel and other fluid flow paths can be communicated with each other. A pipe is inserted into the branch pipe of the eye joint formed in this manner, and the tip of the branch pipe and the outer peripheral surface of the pipe are brazed to connect the eye joint and the pipe.
[0003]
[Problems to be solved by the invention]
However, in the conventional techniques as described above, the processing of the eye joint and the connection with the piping require a complicated technique and a lot of man-hours by skilled work, and the manufacturing cost is expensive. In addition, there is a problem that the working environment and the human body are affected by the flux used during the brazing operation. In addition, in the brazing operation, when a rust-proof treated pipe such as galvanized is used, the galvanized peels off due to the heat during brazing. Therefore, it is necessary to use a pipe that has not been subjected to rust prevention treatment, and to perform rust prevention treatment such as galvanization after completion of brazing, which further increases the manufacturing process.
[0004]
In addition, there is a product in which an eye joint is formed of a resin to simplify the processing work as described in Japanese Utility Model Publication No. 60-5190. In this prior art, after the flare-processed pipe is brought into contact with the sheet surface at the tip of the branch pipe, the branch pipe and the pipe are tightened from the outer periphery with a metal connection nut, and both are connected. Therefore, brazing is not required for the connection between the eye joint and the piping, and the rust-proofed piping can be used, which is safe for the work environment and the human body. However, in this prior art, a metal screw ring is fused and fixed to the outer periphery of the branch pipe. Therefore, in order to contact the pipe with the sheet surface at the tip of the branch pipe, it is necessary to subject the pipe to flaring and plastic deformation. Yes, it requires labor and many techniques to manufacture piping. Moreover, the number of parts is large, such as using a metal connection nut, and a lot of work is required for assembly.
[0005]
The present invention is intended to solve the above-mentioned problems, and is made of a metal which is formed with an eye joint with a resin to obtain a product which is inexpensive and excellent in workability, and which has been subjected to surface treatment such as rust prevention treatment. It is possible to connect the pipe and the eye joint in an easy and safe manner. As a result, the productivity of eye joints and piping manufacturing and connection work is improved, and the impact on the work environment is prevented and the safety to the human body is ensured. In addition, the connection structure between the pipe and the eye joint is made to have highly reliable airtightness and durability.
[0006]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the present invention provides an eye joint main body in which an eyebolt mounting hole is formed in an axial core portion through an annular groove formed therein, and a resin branch pipe. It is composed of a metal pipe fixed to one end by molding, and the branch pipe fixed to this pipe is welded and fixed to the eye joint body in a direction orthogonal to the eye bolt connected to the annular groove of the eye joint body. It consists of.
[0007]
According to a second aspect of the present invention , a resin branch pipe is fixed to one end of a metal pipe by molding, and a weld surface of the branch pipe fixed to the pipe is welded to the side surface of the eye joint body. In this method, the eye joint main body and the pipe are connected to each other by a step in which the eye joint is inserted and connected to the annular concave groove in a direction orthogonal to the surface, and the eye joint main body and the branch pipe are welded and fixed by adding welding means. .
[0008]
Also, A b joint body, the outer periphery of the welding surface of the branch pipe, the resin material may be welded seal.
[0009]
The welding means may be ultrasonic vibration heating welding or high frequency induction heating welding.
[0010]
[Action]
The present invention is configured as described above, and the eye joints of the first and second inventions have an eye joint body and a branch pipe formed separately. In the first step of connecting the eye joint and the pipe, first, a resin branch pipe is fixed to one end of the rust-proof metal pipe by molding. By such a forming method, the branch pipe and the pipe can be easily and firmly connected to each other in a non-separable manner, and highly reliable airtightness can be obtained.
[0011]
In the next step, the branch pipe is placed in contact with the eye joint body in the direction orthogonal to the eyebolt. Next, welding means such as ultrasonic vibration heating welding or high frequency induction heating welding is added to the contact portion, and the branch pipe is welded and fixed to the side surface of the eye joint body. By welding and fixing the branch pipe, the eye joint and the pipe are firmly connected via the branch pipe to obtain excellent airtightness, and the connection work can be easily and safely performed.
[0012]
Further, the first, in the second shot bright, after welding fixation of the eye joint body and the branch pipe, the outer periphery of the welding surface of one another, if welding sealing resin material, the eye joint body and the branch pipe The connection strength is further increased, and the reliability for airtightness is further improved.
[0013]
【Example】
Examples 1 and 2 in which the present invention is applied to a fluid supply mechanism of an automobile will be described below with reference to FIGS. 1 to 4. (1) is a metal pipe for an underfloor panel, a front panel, etc. Fuel main piping that supplies fuel from the fuel tank to the engine room, fuel return piping that returns surplus fuel from the engine to the fuel tank, and fuel vapor in the fuel tank for adsorbing to the canister in the engine room Evaporation piping, vacuum piping that uses negative pressure of intake air, oil piping, and the like. These pipes (1) are arranged in the panel so as to branch in an orthogonal direction from a base body (2) through which automobile fuel, air, lubricating oil and the like circulate.
[0014]
Then, a connection structure and a connection method when the pipe (1) branched and connected in the orthogonal direction to the base body (2) using the eye joint (3) will be described in detail. First, as shown in FIGS. 1 and 2, the eye joint (3) is provided with an annular groove (4) in the spherical eye joint body (5), and is connected to the annular groove (4). Mounting holes (7) and (8) for eyebolts (10) are provided in the core.
[0015]
3 and 4 , the eye joint body (5) and the branch pipe (6) are formed separately, and both are welded and fixed in a subsequent process. To connect such eye joint (3) and piping (1), in Example 1, in the first step, the zinc on the external surface plating, metal subjected to pre-rustproofing by resin coating or the like A resin branch pipe (6) is fixed to one end of the pipe (1) by molding. The eye joint body (5) is formed separately from the branch pipe (6).
[0016]
In the next step, the branch pipe (6) is placed in contact with the outer peripheral surface of the circulation port (27) provided on the side surface of the eye joint body (5). Then, welding means such as ultrasonic vibration heating welding and high-frequency induction heating welding are added to the welding surfaces (24) in contact with each other, and the eye joint body (5) and the branch pipe (6) are welded and fixed, whereby The connection between the joint (3) and the pipe (1) is completed.
[0017]
Thus, the eye joint body (5) and the branch pipe (6) and a separately molded, by Rukoto be welded and fixed after, the connection structure of the eye joint (3) and piping (1), reliability High airtightness and strength can be provided, and the flow of fluid between the base body (2) and the pipe (1) can be smoothly changed in the orthogonal direction. In addition, each operation can be performed safely and easily, and productivity is improved.
[0018]
In the embodiment 2, in the same manner as in Example 1, after the eye joint body (5) and the branch pipe and (6) was welded and fixed to each other, as shown in FIG. 4, the mutual welding surface (24) A seal portion (26) is provided on the outer periphery of the substrate by welding and sealing resin. The welding of the seal portion (26) can be easily performed by ultrasonic vibration heating welding or high frequency induction heating welding. By providing such seal portion (26), although the increased labor and material costs of Example 1 by remote manufacturing, further increases the bonding strength of the branch tube (6) and the eye joint body (5), hermetically It is possible to further improve the reliability and durability with respect to performance.
[0019]
【The invention's effect】
The present invention is configured as described above, and the piping structure for automobiles, piping for various machines / devices, and other metal pipes and eye joints have highly reliable airtightness and durability. Therefore, the fluid can be smoothly circulated through the eye joint between the pipe and the base body whose fluid flow directions are orthogonal to each other. In addition, the connection between the pipe and the eye joint is not by brazing with metal, but by resin welding, so it does not require skilled skills and many man-hours, and can be done in an easy way. The effect can also be prevented. Moreover, it is possible to use a pipe that has been subjected to a rust prevention treatment in advance, and it is possible to further reduce the labor during connection work. Therefore, the production of the eye joint and the connection work with the piping can be efficiently performed, and the productivity can be improved.
[Brief description of the drawings]
FIG. 1 is a plan view of a connection structure between an eye joint and piping in Embodiment 1 of the present invention.
FIG. 2 is a cross-sectional view taken along line AA in FIG.
FIG. 3 is a cross-sectional view of the first embodiment of the present invention in a state in which a pipe to which a resin branch pipe is fixed is welded and fixed to an eye joint body.
FIG. 4 is a cross-sectional view showing a second embodiment of the present invention, in which a branch pipe is welded and fixed to an eye joint body, and a resin material is welded and sealed to the outer periphery of each weld surface.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Piping 4 Annular groove 5 Eye joint body 6 Branch pipe 7 Mounting hole 8 Mounting hole 10 Eye bolt 11 Inner peripheral surface
Claims (6)
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001303355A JP4756804B2 (en) | 2001-09-28 | 2001-09-28 | Connection structure and connection method between metal tube and eye joint |
| US10/253,850 US6851723B2 (en) | 2001-09-28 | 2002-09-24 | Ring joint, connection structure for connecting piping and ring joint, and method of connecting ring joint and piping |
| KR1020020058474A KR100844928B1 (en) | 2001-09-28 | 2002-09-26 | Eyejoint, Structure of jointing pipe with the same and Method of jointing pipe with the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001303355A JP4756804B2 (en) | 2001-09-28 | 2001-09-28 | Connection structure and connection method between metal tube and eye joint |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2003106493A JP2003106493A (en) | 2003-04-09 |
| JP2003106493A5 JP2003106493A5 (en) | 2008-10-16 |
| JP4756804B2 true JP4756804B2 (en) | 2011-08-24 |
Family
ID=19123452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001303355A Expired - Fee Related JP4756804B2 (en) | 2001-09-28 | 2001-09-28 | Connection structure and connection method between metal tube and eye joint |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4756804B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011079003A (en) * | 2009-10-05 | 2011-04-21 | Nichirin Co Ltd | Method of brazing plated product |
| JP2011106607A (en) | 2009-11-19 | 2011-06-02 | Sanoh Industrial Co Ltd | Pipe connecting structure |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6218422Y2 (en) * | 1981-04-28 | 1987-05-12 | ||
| JPS605190Y2 (en) * | 1981-10-15 | 1985-02-16 | 臼井国際産業株式会社 | Resin pipe connection joint |
| JPS605192Y2 (en) * | 1983-02-18 | 1985-02-16 | 臼井国際産業株式会社 | Resin eye joint |
| JP3192682B2 (en) * | 1991-05-08 | 2001-07-30 | 臼井国際産業株式会社 | Installation structure of eye joint with branch |
| JPH05196187A (en) * | 1992-01-21 | 1993-08-06 | Sekisui Chem Co Ltd | Connecting method of pipe and joint |
| JP3241083B2 (en) * | 1992-03-25 | 2001-12-25 | 積水化学工業株式会社 | Pipe fittings |
| JPH07301374A (en) * | 1994-03-11 | 1995-11-14 | Sekisui Chem Co Ltd | Connecting method of multilayer pipe |
| JPH08219360A (en) * | 1995-02-08 | 1996-08-30 | Mitsubishi Plastics Ind Ltd | Insert joint |
| JPH1078176A (en) * | 1996-08-30 | 1998-03-24 | Usui Internatl Ind Co Ltd | Connecting structure between eye joint and slender metal pipe and connecting method thereof |
| JP3555387B2 (en) * | 1997-06-25 | 2004-08-18 | 東海ゴム工業株式会社 | accumulator |
-
2001
- 2001-09-28 JP JP2001303355A patent/JP4756804B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2003106493A (en) | 2003-04-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6929288B2 (en) | Connecting structure of branch connector in fuel pressure accumulating container | |
| EP1903269B1 (en) | Connection structure for different kinds of metal tubes | |
| US6799735B2 (en) | Nozzle plate member for supplying fluids in dispersed manner and manufacturing method of the same | |
| US20060163243A1 (en) | Method of coupling fuel system components | |
| US7300536B1 (en) | Method for attaching intersecting tubes | |
| US20060162144A1 (en) | Method of coupling fuel system components | |
| JP4756804B2 (en) | Connection structure and connection method between metal tube and eye joint | |
| CN210088255U (en) | Metal corrugated pipe and flange connecting structure | |
| KR20160075581A (en) | Heat exchanger and method for producing a heat exchanger | |
| US6851723B2 (en) | Ring joint, connection structure for connecting piping and ring joint, and method of connecting ring joint and piping | |
| WO2020235666A1 (en) | Hydraulic adapter unit, hydraulic pipe member, and hydraulic pipe member production method | |
| US6708756B2 (en) | Method for fixing components to a pipe for circulation of a fluid forming part of a heat exchanger, in particular a condenser of an air-conditioning system | |
| US20040174014A1 (en) | Hose assembly and method of making | |
| JP2004100811A (en) | Eye joint, connecting structure between eye joint and pipe and its method | |
| KR20100060702A (en) | Method of manufacturing fitting having stub-end or lining | |
| JPH0540393Y2 (en) | ||
| JP4319862B2 (en) | Manufacturing method for eye joint fittings | |
| CN207796314U (en) | A kind of non-uniform thickness hydroforming flexible composite pipe | |
| CN218031876U (en) | Piping device | |
| WO2006101914A1 (en) | Electromagnetic forming crimp | |
| EP1275536A1 (en) | Method for fixing components to a pipe for circulation of a fluid forming part of a heat exchanger, in particular a condenser of an air-conditioning system | |
| KR19980052506A (en) | Pipe joint formation structure and pipe joint pipe processing method in piping of automotive air conditioner | |
| JPH0348471Y2 (en) | ||
| CN215137808U (en) | Filter | |
| JPH08145249A (en) | Coupling structure of al alloy pipe having excellent airtight durability |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| RD02 | Notification of acceptance of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7422 Effective date: 20060919 |
|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20080903 |
|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20080903 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20110111 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20110113 |
|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20110310 |
|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20110509 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20110531 |
|
| R150 | Certificate of patent or registration of utility model |
Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20140610 Year of fee payment: 3 |
|
| LAPS | Cancellation because of no payment of annual fees |