Deprecated: The each() function is deprecated. This message will be suppressed on further calls in /home/zhenxiangba/zhenxiangba.com/public_html/phproxy-improved-master/index.php on line 456
JP4415166B2 - Piping method - Google Patents
[go: Go Back, main page]

JP4415166B2 - Piping method - Google Patents

Piping method Download PDF

Info

Publication number
JP4415166B2
JP4415166B2 JP2003420244A JP2003420244A JP4415166B2 JP 4415166 B2 JP4415166 B2 JP 4415166B2 JP 2003420244 A JP2003420244 A JP 2003420244A JP 2003420244 A JP2003420244 A JP 2003420244A JP 4415166 B2 JP4415166 B2 JP 4415166B2
Authority
JP
Japan
Prior art keywords
gas
gas pipe
pipe
mounting bracket
hole
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
Application number
JP2003420244A
Other languages
Japanese (ja)
Other versions
JP2005180525A (en
Inventor
秀樹 雉本
Original Assignee
パロマ工業株式会社
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 パロマ工業株式会社 filed Critical パロマ工業株式会社
Priority to JP2003420244A priority Critical patent/JP4415166B2/en
Publication of JP2005180525A publication Critical patent/JP2005180525A/en
Application granted granted Critical
Publication of JP4415166B2 publication Critical patent/JP4415166B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Landscapes

  • Branch Pipes, Bends, And The Like (AREA)

Description

本発明は、ガスコックにガス管を取り付けるための取付金具をガス管へ接合する配管接合方法に関する。   The present invention relates to a pipe joining method for joining a fitting for attaching a gas pipe to a gas cock to the gas pipe.

従来から、ガス器具におけるガス管のガスコックへの取付構造として、ガス管の側壁にボール盤等で切削開口したガス孔の周縁に取付金具を直接溶接し、この取付金具にガスコックを取り付ける構造が知られている(例えば、特許文献1参照)。
このものでは、まず、鍛造によって図9に示すような平板部104の中央に円柱状の溶接部115を備えた取付金具103を形成し、溶接部115に切削加工によってガス通路となる開口105を形成する。そして、図10に示すように、ガス管102に切削により開口したガス孔110の周縁に取付金具103を溶接部115で溶接する。
特開平6−281035号公報
Conventionally, as a structure for attaching a gas pipe to a gas cock in a gas appliance, a structure in which a metal fitting is directly welded to the periphery of a gas hole cut and opened on a side wall of the gas pipe by a drilling machine or the like and the gas cock is attached to the fitting is known. (For example, refer to Patent Document 1).
In this case, first, a mounting bracket 103 having a cylindrical welded portion 115 is formed at the center of a flat plate portion 104 as shown in FIG. 9 by forging, and an opening 105 serving as a gas passage is formed in the welded portion 115 by cutting. Form. Then, as shown in FIG. 10, the attachment fitting 103 is welded to the periphery of the gas hole 110 opened in the gas pipe 102 by cutting with a welding portion 115.
Japanese Patent Laid-Open No. Hei 6-281035

しかしながら、上述した製造方法では、切削加工により多量のきり粉が発生するために切削加工後に取付金具とガス管とをそれぞれ洗浄する工程が余分に必要となり、製造コストが高くなってしまうという問題があった。しかも、きり粉が完全に除去できていなかったり、切削部にとれかけながらも中途半端にくっついていたきり粉がガス配管の使用中にちぎれたりすると、きり粉がガスコックのシール部等に入り込んでガス漏れを起こすおそれがあった。
また、切削部では、予め施されていたメッキ等の表面処理が削り取られてしまうため、再び表面処理をしなければならず、さらにコスト高となるという問題もあった。
本発明の配管接合方法は上記課題を解決し、切削工程をなくして製造コストを低減するとともに、きり粉によるガス漏れを防止することを目的とする。
However, in the manufacturing method described above, since a large amount of sawdust is generated by the cutting process, an extra step of cleaning the mounting bracket and the gas pipe after the cutting process is necessary, which increases the manufacturing cost. there were. In addition, if the sawdust is not completely removed, or if the sawdust that is stuck to the cut part of the cutting part is torn off while the gas pipe is being used, the sawdust enters the gas cock seal etc. There was a risk of gas leakage.
Further, since the surface treatment such as plating that has been applied in advance is scraped off at the cutting portion, the surface treatment must be performed again, and the cost is further increased.
The pipe joining method of the present invention aims to solve the above problems, eliminate the cutting process, reduce the manufacturing cost, and prevent gas leakage due to sawdust.

上記課題を解決する本発明の請求項1記載の配管接合方法は、
ガスコックにガス管を取り付けるための取付金具をガス管へ接合する配管接合方法において、
平板状の取付金具にプレス加工によりバーリング穴をあける第一工程と、
上記取付金具を上記バーリング穴の突出部で上記ガス管の側面に溶接する第二工程と、
上記バーリング穴内のガス管側壁をプレス加工等によってガス管内側へ切りおこして切りおこし穴を開口する第三工程と
を備えたことを要旨とする。
The pipe joining method according to claim 1 of the present invention for solving the above-mentioned problems is
In the pipe joining method for joining the fitting for attaching the gas pipe to the gas cock to the gas pipe,
A first step of drilling a burring hole in a flat mounting bracket by pressing,
A second step of welding the mounting bracket to the side surface of the gas pipe at the protruding portion of the burring hole;
The gist of the present invention includes a third step of cutting the side wall of the gas pipe in the burring hole to the inside of the gas pipe by pressing or the like to open the hole.

また、本発明の請求項2記載の配管接合方法は、上記請求項1記載の配管接合方法において、
上記第二工程の溶接は、取付金具とガス管との間に電流を流すことにより接触面を溶かして接合するプロジェクション溶接であり、
上記第一工程は、上記取付金具に上記バーリング穴の突出方向と同じ方向に突出する該バーリング穴の突出部よりも小さな位置決め突起を一つ以上形成する工程を含むことを要旨とする。
The pipe joining method according to claim 2 of the present invention is the pipe joining method according to claim 1,
The welding in the second step is projection welding in which the contact surface is melted and joined by passing an electric current between the mounting bracket and the gas pipe.
The gist of the first step is to form one or more positioning protrusions smaller than the protruding portion of the burring hole protruding in the same direction as the protruding direction of the burring hole on the mounting bracket.

また、本発明の請求項3記載の配管接合方法は、上記請求項1又は請求項2記載の配管接合方法において、
上記第三工程で形成される切りおこし面は、上記ガス管内を流れるガス流方向と平行に形成されることを要旨とする。
Moreover, the pipe joining method according to claim 3 of the present invention is the pipe joining method according to claim 1 or 2,
The gist of the cut and raised surface formed in the third step is formed in parallel with the direction of gas flow flowing in the gas pipe.

上記構成を有する本発明の請求項1記載の配管接合方法は、第一工程で平板状の取付金具にプレス加工によりバーリング穴をあけ、第二工程で取付金具をバーリング穴の突出部でガス管の側面に溶接し、第三工程でバーリング穴中のガス管側壁をガス管内側へ切りおこして切りおこし穴を開口する。このように、この接合方法では、取付金具やガス管に穴をあけるための切削工程を含まない。このため、きり粉が生じず、きり粉を除去するための洗浄工程を行う必要がないので、製造工程を簡易化することができ、製造コストが下がる。しかも、きり粉が生じないわけであるから、除去しきれずに残ってしまうきり粉によるガス漏れの心配もなく、より安全に使用できる。
また、切削工程が含まれないため、材料に予めメッキ等の表面処理が施されておれば、切削面に再び表面処理を施す必要もなく、より一層のコストダウンをはかることができる。
In the pipe joining method according to claim 1 of the present invention having the above-described configuration, a burring hole is formed in a flat mounting bracket by press working in the first step, and the mounting bracket is gas piped by a protruding portion of the burring hole in the second step. In the third step, the side wall of the gas pipe in the burring hole is cut to the inside of the gas pipe to open the cut hole. Thus, this joining method does not include a cutting step for making a hole in the mounting bracket or the gas pipe. For this reason, sawdust is not generated, and it is not necessary to perform a cleaning process for removing the sawdust, so that the manufacturing process can be simplified and the manufacturing cost is reduced. Moreover, since no swarf is produced, there is no risk of gas leakage due to the swarf that cannot be completely removed and can be used more safely.
In addition, since the cutting process is not included, if the surface treatment such as plating is performed on the material in advance, it is not necessary to resurface the cutting surface, and the cost can be further reduced.

また、本発明の請求項2記載の配管接合方法は、第一工程で取付金具に位置決め突起を形成しているため、第二工程で取付金具とガス管との間に電流を流してプロジェクション溶接をしていくと、バーリング穴の突出部がだんだんと溶けていき位置決め突起がガス管にあたる。位置決め突起がガス管にあたると、ガス管と取付金具間の電流が位置決め突起へも分流してプロジェクション溶接が終了する。このため、取付金具をガス管に溶接する際の煩わしい位置決め作業や余分な治具等を用いる必要がなくなり、一層のコストダウンをはかることができる。   In the pipe joining method according to claim 2 of the present invention, since the positioning projection is formed on the mounting bracket in the first step, a current is passed between the mounting bracket and the gas pipe in the second step to perform projection welding. As the process proceeds, the protruding part of the burring hole gradually melts and the positioning protrusion hits the gas pipe. When the positioning protrusion hits the gas pipe, the current between the gas pipe and the mounting bracket is also diverted to the positioning protrusion, and projection welding is completed. For this reason, it is not necessary to use troublesome positioning work or extra jigs when welding the mounting bracket to the gas pipe, and the cost can be further reduced.

また、本発明の請求項3記載の配管接合方法は、ガス管内側に形成される切りおこし面をガス流方向と平行となるように形成する。このため、ガス流路の通路抵抗の増大を極力抑えることができ、燃料ガスをスムーズに供給することができる。   In the pipe joining method according to claim 3 of the present invention, the cut and raised surface formed inside the gas pipe is formed so as to be parallel to the gas flow direction. For this reason, the increase in the passage resistance of the gas flow path can be suppressed as much as possible, and the fuel gas can be supplied smoothly.

以上説明した本発明の構成・作用を一層明らかにするために、以下本発明の配管接合方法の好適な実施例について説明する。   In order to further clarify the configuration and operation of the present invention described above, preferred embodiments of the pipe joining method of the present invention will be described below.

図1に、ガスこんろ等のガス器具のガス栓やガス量調節部となるガスコックに接続されるガス配管1を示す。ガス配管1は、燃料ガスの流路となるガス管2と、ガスコックとの接続部となる取付金具3とから構成される。
次に、ガス管2への取付金具3の接合方法について説明する。
まず、第一工程で、図2、図3に示すように、亜鉛メッキ鋼板製の平板4の中心にプレス加工によりバーリング穴5を形成するとともに、平板4の長手方向のバーリング穴5の両側にバーリング部が形成されないビス穴6としての抜き穴を開口して、取付金具3を作製する。また、この際同時に、平板4の短手方向のバーリング穴5の両側には、バーリング穴5の突出方向と同じ方向に突出する位置決め突起7がプレス成形される。この位置決め突起7は、バーリング穴5の突出部8よりも小さく形成される。
また、バーリング穴5と二つのビス穴6の中心を通る直線は取付金具3の短手方向の中央を通り、バーリング穴5と二つの位置決め突起7の中心を通る直線は取付金具3の長手方向の中央を通る。
FIG. 1 shows a gas pipe 1 connected to a gas cock of a gas appliance such as a gas stove or a gas cock serving as a gas amount adjusting unit. The gas pipe 1 includes a gas pipe 2 serving as a fuel gas flow path and an attachment fitting 3 serving as a connection portion with the gas cock.
Next, a method for joining the mounting bracket 3 to the gas pipe 2 will be described.
First, in the first step, as shown in FIGS. 2 and 3, burring holes 5 are formed in the center of a flat plate 4 made of galvanized steel sheet by pressing, and on both sides of the longitudinal burring holes 5 of the flat plate 4. A mounting hole 3 is produced by opening a hole as a screw hole 6 in which a burring portion is not formed. At the same time, positioning projections 7 are formed on both sides of the burring hole 5 in the short direction of the flat plate 4 so as to protrude in the same direction as the protruding direction of the burring hole 5. The positioning protrusion 7 is formed smaller than the protrusion 8 of the burring hole 5.
The straight line passing through the center of the burring hole 5 and the two screw holes 6 passes through the center of the mounting bracket 3 in the short direction, and the straight line passing through the center of the burring hole 5 and the two positioning protrusions 7 is the longitudinal direction of the mounting bracket 3. Pass through the center of

次いで、第二工程においては、上述した取付金具3をバーリング穴5の突出部8をガス管2側に向けるようにしてガス管2に接触させて、取付金具3とガス管2間に電圧を印可してプロジェクション溶接を行う。取付金具3とガス管2間に電圧を印可すると、電流が流れて接触部で発熱し溶け合うことにより溶接されるのである(図4)。
そして、プロジェクション溶接が進んでいき、突出部8が溶けて取付金具3とガス管2とがだんだんと近づいていって位置決め突起7がガス管2にあたると、電流が位置決め突起7の方にも分流するので、バーリング部での発熱量が足りなくなってプロジェクション溶接が終了する。
Next, in the second step, the above-described mounting bracket 3 is brought into contact with the gas pipe 2 so that the protruding portion 8 of the burring hole 5 faces the gas pipe 2, and a voltage is applied between the mounting bracket 3 and the gas pipe 2. Apply and perform projection welding. When a voltage is applied between the mounting bracket 3 and the gas pipe 2, current flows and heat is generated at the contact portion and is welded together (FIG. 4).
Then, when the projection welding proceeds, the protrusion 8 is melted, the mounting bracket 3 and the gas pipe 2 are gradually approaching, and the positioning protrusion 7 hits the gas pipe 2, the current is also diverted to the positioning protrusion 7. As a result, the amount of heat generated at the burring portion becomes insufficient, and projection welding is completed.

そして、第三工程で、第二工程でガス管2と溶接した取付金具3のバーリング穴5内に油圧シリンダー等によって、図5に示すような片刃9を打ち込んで、バーリング穴5内のガス管2側壁をガス管2内側へ切りおこして切りおこし穴10を形成する(図6、図7)。片刃9は、先端の刃12の部分が断面半円状に形成されており、根元側には刃がないR部13が設けられて管面を完全には抜けないようになっている。そして、根元のR部13よりも下方には段差部14が設けられる。
切りおこし穴10とは、図6、図7に示すように、ガス管2の側面に片刃9によって半円状に切れ込みをいれ、その一辺がガス管2の側面とつながったままの切りおこし面11を片刃9でガス管2の内側に押し込むようにして折り曲げて形成された穴である。この際、切りおこし面11は、片刃9の段差部14に入り込むようにして折り曲げられる。また、この切りおこし穴10は、切りおこし面11がガス管2内を流れるガス流方向と平行となるように開口される。
また、第三工程における切りおこし穴10の形成は、第二工程でガス管2と取付金具3とを溶接し切りおこし穴10形成位置の周りの肉厚を厚くした後に行っているため、きれいに切りおこし穴10を形成できるのである。言い換えれば、溶接する前に片刃9を打ち込んで切りおこし穴10を形成しようとすると、ガス管2が肉厚が薄いためにへこんでしまい、うまく形成できない。
そして、このようにして形成されたガス配管1は、図8に示すように、ガスコック15の接続面と取付金具3との間にパッキン16を挟み込んで、ガスコック15のビス穴17と取付金具3のビス穴6との間にビス18を挿入することによって密閉接続される。
尚、図3、図4、図7、図8においては、バーリング穴5の突出壁面によって位置決め突起7は実際には見えないが、位置決め突起7の機能を分かりやすくするために、図中においては、バーリング穴5の突出壁面のうち側面だけを描き、向こう側の面は省略してある。このため、位置決め突起7も図中に現れるのである。
Then, in the third step, a single blade 9 as shown in FIG. 5 is driven into the burring hole 5 of the fitting 3 welded to the gas pipe 2 in the second step by a hydraulic cylinder or the like, and the gas pipe in the burring hole 5 is inserted. Two side walls are cut into the gas pipe 2 to form a cut hole 10 (FIGS. 6 and 7). The single blade 9 is formed so that the tip of the blade 12 has a semicircular cross section, and an R portion 13 having no blade is provided on the root side so that the tube surface cannot be completely removed. A step 14 is provided below the base R 13.
As shown in FIGS. 6 and 7, the cut hole 10 is a cut surface in which the side surface of the gas pipe 2 is cut into a semicircular shape by a single blade 9 and one side thereof is connected to the side surface of the gas pipe 2. 11 is a hole formed by bending 11 so as to be pushed into the inside of the gas pipe 2 with a single blade 9. At this time, the cut and raised surface 11 is bent so as to enter the stepped portion 14 of the single blade 9. The cut hole 10 is opened so that the cut surface 11 is parallel to the gas flow direction flowing through the gas pipe 2.
In addition, the formation of the cut hole 10 in the third step is performed after the gas pipe 2 and the mounting bracket 3 are welded in the second step and the wall thickness around the cut hole 10 forming position is increased, so that it is clean. The cut hole 10 can be formed. In other words, before trying to form the cut hole 10 by driving the single blade 9 before welding, the gas pipe 2 is dented due to its thin wall thickness and cannot be formed well.
As shown in FIG. 8, the gas pipe 1 formed in this way has a packing 16 sandwiched between the connection surface of the gas cock 15 and the mounting bracket 3, and the screw hole 17 of the gas cock 15 and the mounting bracket 3. A hermetic connection is established by inserting a screw 18 between the screw hole 6.
3, 4, 7, and 8, the positioning protrusion 7 is not actually visible due to the protruding wall surface of the burring hole 5, but in order to facilitate understanding of the function of the positioning protrusion 7, Only the side surface of the protruding wall surface of the burring hole 5 is drawn, and the other surface is omitted. For this reason, the positioning protrusion 7 also appears in the figure.

上述した配管接合方法によれば、取付金具3やガス管2に穴をあけるための切削工程を含まないため、きり粉が生じず、きり粉を除去するための洗浄工程を行う必要がないので、製造工程を簡易化することができ、製造コストが下がる。しかも、きり粉が生じないわけであるから、除去しきれずに残ってしまうきり粉によるガス漏れの心配もなく、より安全に使用できる。
また、切削工程が含まれないため、材料に予めメッキ等の表面処理が施されておれば、切削面に再び表面処理を施す必要もなく、より一層のコストダウンをはかることができる。
According to the above-described piping joining method, since the cutting process for drilling holes in the mounting bracket 3 and the gas pipe 2 is not included, no swarf is generated, and there is no need to perform a cleaning process for removing the swarf. The manufacturing process can be simplified, and the manufacturing cost is reduced. Moreover, since no swarf is produced, there is no risk of gas leakage due to the swarf that cannot be completely removed and can be used more safely.
In addition, since the cutting process is not included, if the surface treatment such as plating is performed on the material in advance, it is not necessary to resurface the cutting surface, and the cost can be further reduced.

また、取付金具3に位置決め突起7を形成しているため、プロジェクション溶接をしていって位置決め突起7がガス管2にあたると、ガス管2と取付金具3間の電流が分流してプロジェクション溶接が自動的に終了するので、取付金具3をガス管2に溶接する際の煩わしい位置決め作業や余分な治具等を用いる必要がなくなり、一層のコストダウンをはかることができる。
また、ガス管2内側に形成される切りおこし面11をガス流方向と平行となるように形成する。このため、ガス流路の通路抵抗の増大を極力抑えることができ、燃料ガスをスムーズに供給することができる。
Further, since the positioning projection 7 is formed on the mounting bracket 3, when projection welding is performed and the positioning projection 7 hits the gas pipe 2, the current between the gas pipe 2 and the mounting bracket 3 is shunted to perform projection welding. Since the process is automatically terminated, it is not necessary to use troublesome positioning work and extra jigs when welding the mounting bracket 3 to the gas pipe 2, and the cost can be further reduced.
Further, the cut and raised surface 11 formed inside the gas pipe 2 is formed to be parallel to the gas flow direction. For this reason, the increase in the passage resistance of the gas flow path can be suppressed as much as possible, and the fuel gas can be supplied smoothly.

以上本発明の実施例について説明したが、本発明はこうした実施例に何等限定されるものではなく、本発明の要旨を逸脱しない範囲において、種々なる態様で実施し得ることは勿論である。   Although the embodiments of the present invention have been described above, the present invention is not limited to these embodiments, and it is needless to say that the present invention can be implemented in various modes without departing from the gist of the present invention.

テーブルこんろやビルトインこんろ等といったガスコックを備えたガス器具に適用可能である。   The present invention can be applied to gas appliances equipped with a gas cooker such as a table cooker or a built-in cooker.

実施例1としてのガス配管の外観図である。1 is an external view of a gas pipe as Example 1. FIG. 実施例1としての取付金具の正面図である。It is a front view of the mounting bracket as Example 1. 実施例1としての取付金具の断面図である。It is sectional drawing of the attachment metal fitting as Example 1. FIG. 実施例1としてのガス配管の断面図である(切りおこし穴形成前)。It is sectional drawing of the gas piping as Example 1 (before cutting hole formation). 実施例1としての片刃の正面図である。1 is a front view of a single blade as Example 1. FIG. 実施例1としての切りおこし穴の正面図である。It is a front view of the cutting hole as Example 1. FIG. 実施例1としてのガス配管の断面図である(切りおこし穴形成後)。It is sectional drawing of the gas piping as Example 1 (after cutting hole formation). 実施例1としてのガス配管とガスコックとの接続の様子を示す説明図である。It is explanatory drawing which shows the mode of the connection of the gas piping and gas cock as Example 1. FIG. 従来例としての取付金具の断面図である。It is sectional drawing of the attachment metal fitting as a prior art example. 従来例としてのガス配管の断面図である。It is sectional drawing of the gas piping as a prior art example.

符号の説明Explanation of symbols

1 ガス配管
2 ガス管
3 取付金具
4 平板
5 バーリング穴
7 位置決め突起
8 突出部
10 切りおこし穴
11 切りおこし面
DESCRIPTION OF SYMBOLS 1 Gas piping 2 Gas pipe 3 Mounting bracket 4 Flat plate 5 Burring hole 7 Positioning protrusion 8 Protruding part 10 Cutting hole 11 Cutting surface

Claims (3)

ガスコックにガス管を取り付けるための取付金具をガス管へ接合する配管接合方法において、
平板状の取付金具にプレス加工によりバーリング穴をあける第一工程と、
上記取付金具を上記バーリング穴の突出部で上記ガス管の側面に溶接する第二工程と、
上記バーリング穴内のガス管側壁をプレス加工等によってガス管内側へ切りおこして切りおこし穴を開口する第三工程と
を備えたことを特徴とする配管接合方法。
In the pipe joining method for joining the fitting for attaching the gas pipe to the gas cock to the gas pipe,
A first step of drilling a burring hole in a flat mounting bracket by pressing,
A second step of welding the mounting bracket to the side surface of the gas pipe at the protruding portion of the burring hole;
A pipe joining method comprising: a third step of cutting a gas pipe side wall in the burring hole to the inside of the gas pipe by pressing or the like to open the hole.
上記第二工程の溶接は、取付金具とガス管との間に電流を流すことにより接触面を溶かして接合するプロジェクション溶接であり、
上記第一工程は、上記取付金具に上記バーリング穴の突出方向と同じ方向に突出する該バーリング穴の突出部よりも小さな位置決め突起を一つ以上形成する工程を含むことを特徴とする請求項1記載の配管接合方法。
The welding in the second step is projection welding in which the contact surface is melted and joined by passing an electric current between the mounting bracket and the gas pipe.
The first step includes a step of forming at least one positioning protrusion smaller than a protruding portion of the burring hole protruding in the same direction as a protruding direction of the burring hole on the mounting bracket. The pipe joining method described.
上記第三工程で形成される切りおこし面は、上記ガス管内を流れるガス流方向と平行に形成されることを特徴とする請求項1又は請求項2記載の配管接合方法。   The pipe joining method according to claim 1 or 2, wherein the cut and raised surface formed in the third step is formed in parallel with a gas flow direction flowing in the gas pipe.
JP2003420244A 2003-12-18 2003-12-18 Piping method Expired - Fee Related JP4415166B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2003420244A JP4415166B2 (en) 2003-12-18 2003-12-18 Piping method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2003420244A JP4415166B2 (en) 2003-12-18 2003-12-18 Piping method

Publications (2)

Publication Number Publication Date
JP2005180525A JP2005180525A (en) 2005-07-07
JP4415166B2 true JP4415166B2 (en) 2010-02-17

Family

ID=34781840

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2003420244A Expired - Fee Related JP4415166B2 (en) 2003-12-18 2003-12-18 Piping method

Country Status (1)

Country Link
JP (1) JP4415166B2 (en)

Also Published As

Publication number Publication date
JP2005180525A (en) 2005-07-07

Similar Documents

Publication Publication Date Title
US20100314075A1 (en) Cooling plate and manufacturing method therefor
JPH0318982B2 (en)
EP1545824B1 (en) Deformation resistance welding of sheet metal, tubes, and similar shapes
JP4415166B2 (en) Piping method
JP6362427B2 (en) Sash connection structure and sash connection method
JP3867982B2 (en) Curved electrode for welding
JP2849563B2 (en) Metal tube
JP2006159285A (en) Punching method for bent double tubes
JP2006150397A (en) Ring projection welding method and ring projection welding member
CN111288692A (en) Liquid storage device and air conditioner compressor assembly
JP5802182B2 (en) Drain pipe connection structure and manufacturing method thereof
KR102063168B1 (en) Structure of eletrode tip for spot welding equipment
KR200292222Y1 (en) branch pipe connector for welding pipes
JP4200158B2 (en) Gas appliances
CN111715977A (en) Method of making radiator from internal welding and internal welding type radiator
CN1611908A (en) Heat pipe sealing method
JP2006071083A (en) Bolt for press fit jointing and press fit jointing structure thereof
KR200238306Y1 (en) A secondary coil in use transformer of the resistance welding machine
EP0672474A1 (en) Tube made of zinc or alloys thereof for sheet metal working and process for its manufacture
JPS5881558A (en) Connecting method of tube and end plate in heat exchanger
KR0120360Y1 (en) Interface tank of automotive condenser
JP2006021245A (en) Method for joining platy members
JP2002219583A (en) Terminal treatment method in frictional stirring joining and frictional stirring jointed body with the terminal treated
JPH07269724A (en) Spool
CN100446916C (en) A kind of bolt assembly method

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20061124

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20091002

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20091013

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20091106

R150 Certificate of patent or registration of utility model

Ref document number: 4415166

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20121204

Year of fee payment: 3

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20121204

Year of fee payment: 3

S533 Written request for registration of change of name

Free format text: JAPANESE INTERMEDIATE CODE: R313533

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20121204

Year of fee payment: 3

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20151204

Year of fee payment: 6

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

LAPS Cancellation because of no payment of annual fees