JP2014144469A

JP2014144469A - Manufacturing method of fluid-related function device

Info

Publication number: JP2014144469A
Application number: JP2013014005A
Authority: JP
Inventors: Takuro Ishikawa; 琢郎石川; Yoshihiro Hamabe; 義弘濱邉
Original assignee: Saginomiya Seisakusho Inc
Current assignee: Saginomiya Seisakusho Inc
Priority date: 2013-01-29
Filing date: 2013-01-29
Publication date: 2014-08-14
Also published as: CN103962722A

Abstract

PROBLEM TO BE SOLVED: To provide a manufacturing method of a fluid-related function device capable of providing the fluid-related function device being more stable in a joining state of a stainless steel or aluminum case part and a connection member joined to the case part by resistance welding.SOLUTION: The manufacturing method of a pressure switch 1 comprises a surface treatment process of executing surface treatment so that a state of the whole joining place S becomes uniform by irradiating a laser to the joining place S with a housing 70 in the case part 81 before a welding process of joining the housing 70 to the case part 81 by the resistance welding.

Description

本発明は、例えば、冷媒などの流体が流れる配管等に接続される圧力スイッチ、圧力センサなどの圧力感応装置、及び、当該配管等を流れる流体の流量を制御する弁装置などの流体に関わる機能を有する流体関連機能装置の製造方法に関する。 The present invention relates to fluid-related functions such as a pressure switch connected to a pipe or the like through which a fluid such as a refrigerant flows, a pressure sensitive device such as a pressure sensor, and a valve device that controls the flow rate of the fluid flowing through the pipe or the like. The present invention relates to a method for manufacturing a fluid-related functional device.

従来、流体としての冷媒が流れる配管等に接続される圧力感応装置として、例えば、特許文献１に開示された圧力スイッチがある。この圧力スイッチは、ステンレス製の蓋部材（１）と黄銅製の接手（継手）（２）を備えており、蓋部材（１）と接手（２）はプロジェクション溶接（抵抗溶接）により拡散接合されている。そして、接手（２）が冷媒が流れる配管に接続され、接手（２）の中央部の内部穴（２２）と蓋部材（１）の貫通穴（１２）を介して蓋部材（１）内に流体を導入するよう構成されている。 Conventionally, as a pressure sensitive device connected to a pipe or the like through which a refrigerant as a fluid flows, there is a pressure switch disclosed in Patent Document 1, for example. This pressure switch includes a stainless steel lid member (1) and a brass joint (joint) (2). The lid member (1) and the joint (2) are diffusion-bonded by projection welding (resistance welding). ing. Then, the joint (2) is connected to a pipe through which the refrigerant flows, and enters the lid member (1) through the inner hole (22) at the center of the joint (2) and the through hole (12) of the lid member (1). It is configured to introduce a fluid.

特開２００６−２０５２３１号公報JP 2006-205231 A

しかしながら、このような圧力スイッチでは、蓋部材（１）がステンレス製であることからその表面に酸化皮膜が形成されているので、この酸化皮膜が絶縁体となり、蓋部材（１）と接手（２）との間に抵抗溶接のための電流を流すには高電圧が必要となる。そして、圧力スイッチでは、蓋部材（１）と接手（２）との間から流体が漏れないように接合箇所全周にわたって密封して溶接する必要があるところ、例えば、酸化皮膜のムラ等により蓋部材（１）と接手（２）との接合箇所において流れる電流量が異なる部分が生じることがあった。また、蓋部材（１）の接合箇所にゴミ等が付着していた場合、電流を流すことによりゴミ等が火花となって飛び散ることがあった。そのため、蓋部材（１）と接手（２）との接合箇所の溶接が不均一となってしまうことがあり、密封性や接合強度などの品質的に安定した接合状態を得るという点で改良の余地があった。また、配管等に接続される弁装置等、流体に関わる機能を有する各種の流体関連機能装置においても同様の点で改良の余地があった。 However, in such a pressure switch, since the lid member (1) is made of stainless steel, an oxide film is formed on the surface thereof. Therefore, the oxide film becomes an insulator, and the lid member (1) and the joint (2 ) Requires a high voltage to pass a current for resistance welding. In the pressure switch, it is necessary to seal and weld the entire circumference of the joining portion so that fluid does not leak from between the lid member (1) and the joint (2). In some cases, different portions of the amount of current flowing at the joints between the member (1) and the joint (2) are generated. In addition, when dust or the like is attached to the joint portion of the lid member (1), the dust or the like may be scattered as a spark by passing an electric current. For this reason, welding at the joint portion between the lid member (1) and the joint (2) may be uneven, which is an improvement in terms of obtaining a quality and stable joint state such as sealing performance and joint strength. There was room. In addition, there is room for improvement in the same point in various fluid-related functional devices having a function related to fluid, such as a valve device connected to a pipe or the like.

そこで、本発明は、ステンレス製又はアルミニウム製のケース部品と該ケース部品に抵抗溶接により接合される接続部材との接合状態がより安定した流体関連機能装置を得ることのできる流体関連機能装置の製造方法を提供することを課題とする。 Therefore, the present invention provides a fluid-related functional device capable of obtaining a fluid-related functional device with a more stable joining state between a stainless steel or aluminum case component and a connection member joined to the case component by resistance welding. It is an object to provide a method.

請求項１に記載された発明は、上記課題を解決するために、流体が流れる配管が接続される内孔が形成された金属製の接続部材と、前記接続部材が外側面に接合され、該接続部材の内孔と内側面側の空間とを連通させる前記外側面と前記内側面とを貫通する貫通孔が形成されたステンレス製又はアルミニウム製のケース部品と、を備えた流体に関わる機能を有する流体関連機能装置の製造方法であって、前記ケース部品の外側面における前記貫通孔を囲む環状の前記接続部材との接合箇所にレーザーを照射して、当該接合箇所全体の状態が均一になるように表面処理を行う表面処理工程と、前記接続部材の内孔と前記ケース部材の貫通孔とを連通させた状態で、前記表面処理工程で前記表面処理が行われた前記接合箇所の全周にわたって前記接続部材を抵抗溶接によって接合する溶接工程と、
を含むことを特徴とする流体関連機能装置の製造方法である。 In order to solve the above-mentioned problem, the invention described in claim 1 is formed by joining a metal connecting member having an inner hole to which a pipe through which a fluid flows is connected, and the connecting member to an outer surface, A function relating to a fluid provided with a case part made of stainless steel or aluminum in which a through-hole penetrating the outer side surface and the inner side surface communicating the inner hole of the connecting member and the space on the inner side surface is formed. A fluid-related functional device manufacturing method comprising: irradiating a laser beam to a joint portion with the annular connection member surrounding the through hole on the outer surface of the case component, so that the state of the whole joint portion becomes uniform In a state where the surface treatment step of performing the surface treatment and the inner hole of the connection member and the through hole of the case member are in communication with each other, the entire circumference of the joint portion where the surface treatment is performed in the surface treatment step Over said A welding step of joining the connection member by a resistance welding,
A method for manufacturing a fluid-related functional device.

請求項２に記載された発明は、請求項１に記載された発明において、前記表面処理工程では、前記接合箇所全体に複数の溝を形成するようにレーザーを複数回走査して照射することを特徴とする製造方法である。 According to a second aspect of the present invention, in the first aspect of the present invention, in the surface treatment step, a laser is scanned a plurality of times so as to form a plurality of grooves in the entire joining portion. This is a featured manufacturing method.

請求項３に記載された発明は、請求項２に記載された発明において、前記表面処理工程では、前記接合箇所全体に互いに平行な直線状の複数の溝を形成するようにレーザーを照射することを特徴とする製造方法である。 According to a third aspect of the present invention, in the second aspect of the present invention, in the surface treatment step, the laser is irradiated so as to form a plurality of linear grooves parallel to each other in the entire joint portion. Is a manufacturing method characterized by

請求項４に記載された発明は、請求項２に記載された発明において、前記表面処理工程では、前記接合箇所全体に環状でかつ互いに交差しない同心状の複数の溝を形成するようにレーザーを照射することを特徴とする製造方法である。 According to a fourth aspect of the present invention, in the second aspect of the present invention, in the surface treatment step, a laser is formed so as to form a plurality of concentric grooves that are annular and do not intersect with each other in the entire joint portion. It is a manufacturing method characterized by irradiating.

請求項５に記載された発明は、請求項２に記載された発明において、前記表面処理工程では、前記接合箇所全体に、互いに平行な直線状の第１の複数の溝と、前記第１の複数の溝と交差する方向に互いに平行な直線状の第２の複数の溝と、を形成するようにレーザーを照射することを特徴とする製造方法である。 According to a fifth aspect of the present invention, in the second aspect of the present invention, in the surface treatment step, the first plurality of linear grooves parallel to each other are formed in the entire joint portion, and the first It is a manufacturing method characterized by irradiating a laser so as to form a plurality of linear second grooves parallel to each other in a direction intersecting with the plurality of grooves.

請求項６に記載された発明は、請求項１に記載された発明において、前記表面処理工程では、前記接合箇所の全面にレーザーを照射することを特徴とする製造方法である。 The invention described in claim 6 is the manufacturing method according to the invention described in claim 1, wherein, in the surface treatment step, a laser is irradiated on the entire surface of the joining portion.

請求項１に記載された発明によれば、ケース部品の外側面に接続部材を抵抗溶接によって接合する溶接工程より前に、ケース部品の外側面におけるその貫通孔を囲む環状の接続部材との接合箇所にレーザーを照射して、当該接合箇所全体の状態が均一になるように表面処理を行う表面処理工程を行う。そのため、抵抗溶接を行う時点で、ケース部品の外側面における接続部材との接合箇所の酸化皮膜が削減又は除去され、また、ゴミ等の付着物が除去されて、該接合箇所全体の状態が均一になる。これにより、接合箇所全体にわたって抵抗溶接を均一に行うことができ、ステンレス製又はアルミニウム製のケース部品と該ケース部品に抵抗溶接により接合される接続部材との接合状態がより安定した流体関連機能装置を得ることができる。 According to the first aspect of the present invention, the joining with the annular connecting member surrounding the through hole in the outer surface of the case part is performed before the welding step of joining the connecting member to the outer surface of the case part by resistance welding. A surface treatment process is performed in which the surface is irradiated with a laser to perform a surface treatment so that the entire state of the joint is uniform. Therefore, when resistance welding is performed, the oxide film at the joint portion with the connection member on the outer surface of the case part is reduced or removed, and the deposits such as dust are removed, so that the state of the whole joint portion is uniform. become. Thereby, resistance welding can be performed uniformly over the entire joining portion, and the fluid-related functional device in which the joining state of the stainless steel or aluminum case part and the connecting member joined to the case part by resistance welding is more stable. Can be obtained.

請求項２に記載された発明によれば、表面処理工程では、ケース部品の接合箇所全体に複数の溝を形成するようにレーザーを複数回走査して照射する。これにより、例えば、断続的にレーザーを照射するようなレーザー制御に比べて、簡易なレーザー制御によってケース部品の接合箇所の表面処理を行うことができる。 According to the second aspect of the present invention, in the surface treatment step, the laser is scanned and irradiated a plurality of times so as to form a plurality of grooves in the entire joint portion of the case parts. Thereby, compared with laser control which irradiates a laser intermittently, surface treatment of the joining location of case components can be performed by simple laser control, for example.

請求項３に記載された発明によれば、表面処理工程では、ケース部品の接合箇所全体に互いに平行な直線状の複数の溝を形成するようにレーザーを照射する。これにより、例えば、断続的にレーザーを照射するようなレーザー制御や曲線状にレーザーを照射するレーザー制御に比べて、非常に簡易なレーザー制御によってケース部品の接合箇所の表面処理を行うことができる。 According to the invention described in claim 3, in the surface treatment step, the laser is irradiated so as to form a plurality of linear grooves parallel to each other in the entire joint portion of the case component. As a result, for example, compared to laser control that irradiates laser intermittently or laser control that irradiates laser in a curved shape, surface treatment of the joint part of the case parts can be performed by very simple laser control. .

請求項４に記載された発明によれば、表面処理工程では、ケース部品の接合箇所全体に環状でかつ互いに交差しない同心状の複数の溝を形成するようにレーザーを照射する。これにより、例えば、断続的にレーザーを照射するようなレーザー制御に比べて、簡易なレーザー制御によってケース部品の接合箇所の表面処理を行うことができる。 According to the invention described in claim 4, in the surface treatment step, the laser is irradiated so as to form a plurality of concentric grooves that are annular and do not intersect with each other in the entire joint portion of the case parts. Thereby, compared with laser control which irradiates a laser intermittently, surface treatment of the joining location of case components can be performed by simple laser control, for example.

請求項５に記載された発明によれば、表面処理工程では、ケース部品の接合箇所全体に、互いに平行な直線状の第１の複数の溝と、該第１の複数の溝と交差する方向に互いに平行な直線状の第２の複数の溝と、を形成するようにレーザーを照射する。これにより、例えば、断続的にレーザーを照射するようなレーザー制御や曲線状にレーザーを照射するレーザー制御に比べて、非常に簡易なレーザー制御によってケース部品の接合箇所の表面処理を行うことができる。また、ケース部品の接合箇所全体の状態をより均一にできる。 According to the fifth aspect of the present invention, in the surface treatment step, the first plurality of linear grooves parallel to each other and the direction intersecting with the first plurality of grooves are formed in the entire joint portion of the case parts. Are irradiated with a laser so as to form a plurality of linear grooves parallel to each other. As a result, for example, compared to laser control that irradiates laser intermittently or laser control that irradiates laser in a curved shape, surface treatment of the joint part of the case parts can be performed by very simple laser control. . Moreover, the state of the whole joining location of case parts can be made more uniform.

請求項６に記載された発明によれば、表面処理工程では、ケース部品の接合箇所の全面にレーザーを照射する。これにより、ケース部品の接合箇所の全面が隙間無く表面処理を施されるので、当該接合箇所全体の状態をより均一にできる。 According to the invention described in claim 6, in the surface treatment step, the entire surface of the joint part of the case part is irradiated with the laser. Thereby, since the whole surface of the joining location of case parts is surface-treated without a gap, the state of the whole joining location can be made more uniform.

本発明の一実施形態の製造方法で製造される圧力スイッチの縦断面図である。It is a longitudinal cross-sectional view of the pressure switch manufactured with the manufacturing method of one Embodiment of this invention. 図１の圧力スイッチが備えるキャップ部材の構成を示す図であって、（ａ）は、平面図であり、（ｂ）は、（ａ）の粗面化部の一部を拡大した図である（粗面化部が、キャップ部材の外側面の接合箇所に形成された互いに平行な直線状の複数の溝で構成されている）。It is a figure which shows the structure of the cap member with which the pressure switch of FIG. 1 is equipped, Comprising: (a) is a top view, (b) is the figure which expanded a part of roughening part of (a). (The roughened portion is composed of a plurality of linear grooves formed in parallel to each other and formed at the joint portion of the outer surface of the cap member). 図１の圧力スイッチが備える継手及びキャップ部材の溶接工程を説明する図であって、（ａ）は、溶接前の状態を示す縦断面図であり、（ｂ）は、溶接後の状態を示す縦断面図である。It is a figure explaining the welding process of the coupling and cap member with which the pressure switch of FIG. 1 is equipped, Comprising: (a) is a longitudinal cross-sectional view which shows the state before welding, (b) shows the state after welding. It is a longitudinal cross-sectional view. 本発明の他の一実施形態の製造方法で製造される弁装置の縦断面図である。It is a longitudinal cross-sectional view of the valve apparatus manufactured with the manufacturing method of other one Embodiment of this invention. 図４の弁装置が備えるケース部品の構成を示す図であって、（ａ）は、平面図であり、（ｂ）は、（ａ）の粗面化部の一部を拡大した図である（粗面化部が、ケース部品の外側面の接合箇所に形成された互いに平行な直線状の複数の溝で構成されている）。It is a figure which shows the structure of the case components with which the valve apparatus of FIG. 4 is equipped, Comprising: (a) is a top view, (b) is the figure which expanded a part of roughening part of (a). (The roughened portion is composed of a plurality of linear grooves formed in parallel to each other formed at the joint portion of the outer surface of the case part). 図１の圧力スイッチが備えるキャップ部材の第１の変形例の構成を示す図であって、（ａ）は、平面図であり、（ｂ）は、（ａ）の粗面化部の一部を拡大した図である（粗面化部が、キャップ部材の外側面の接合箇所に形成された同心円状の複数の溝で構成されている）。It is a figure which shows the structure of the 1st modification of the cap member with which the pressure switch of FIG. 1 is equipped, Comprising: (a) is a top view, (b) is a part of roughening part of (a). (The roughened portion is composed of a plurality of concentric grooves formed at the joint portion of the outer surface of the cap member). 図１の圧力スイッチが備えるキャップ部材の第２の変形例の構成を示す図であって、（ａ）は、平面図であり、（ｂ）は、（ａ）の粗面化部の一部を拡大した図である（粗面化部が、キャップ部材の外側面の接合箇所に形成された一方向に互いに平行な直線状の第１の複数の溝と、一方向と交差する他方向に互いに平行な直線状の第２の複数の溝と、で構成されている）。It is a figure which shows the structure of the 2nd modification of the cap member with which the pressure switch of FIG. 1 is equipped, Comprising: (a) is a top view, (b) is a part of roughening part of (a). (The roughened portion has a plurality of linear first grooves that are parallel to one direction formed at the joint portion of the outer surface of the cap member and the other direction intersecting the one direction. And a plurality of linear grooves parallel to each other). 図１の圧力スイッチが備えるキャップ部材の第３の変形例の構成を示す平面図である。It is a top view which shows the structure of the 3rd modification of the cap member with which the pressure switch of FIG. 1 is provided. 図１の圧力スイッチの変形例の構成を示す一部断面図である。It is a partial cross section figure which shows the structure of the modification of the pressure switch of FIG.

（第１の実施形態）
以下に、本発明の一実施形態の製造方法で製造される圧力スイッチ及びその製造方法について、図１〜図３を参照して説明する。この圧力スイッチは、流体に関する機能を有する流体関連機能装置としての圧力感応装置の一例であり、検出対象の流体が流れる配管に接続されて、流体の圧力に応じてスイッチ接点を開閉するものである。 (First embodiment)
Below, the pressure switch manufactured with the manufacturing method of one Embodiment of this invention and its manufacturing method are demonstrated with reference to FIGS. 1-3. This pressure switch is an example of a pressure-sensitive device as a fluid-related functional device having a fluid-related function, and is connected to a pipe through which a fluid to be detected flows, and opens and closes a switch contact according to the pressure of the fluid. .

図１は、本発明の一実施形態の製造方法で製造される圧力スイッチの縦断面図である。図２は、図１の圧力スイッチが備えるキャップ部材の構成を示す図であって、（ａ）は、平面図であり、（ｂ）は、（ａ）の粗面化部の一部を拡大した図である（粗面化部が、キャップ部材の外側面の接合箇所に形成された互いに平行な直線状の複数の溝で構成されている）。図３は、図１の圧力スイッチが備える継手及びキャップ部材の溶接工程を説明する図であって、（ａ）は、溶接前の状態を示す縦断面図であり、（ｂ）は、溶接後の状態を示す縦断面図である。なお、以下の説明における「上下」の概念は、図１における上下に対応しており、各部材の相対的な位置関係を示すものであって、絶対的な位置関係を示すものではない。 FIG. 1 is a longitudinal sectional view of a pressure switch manufactured by a manufacturing method according to an embodiment of the present invention. 2A and 2B are diagrams illustrating a configuration of a cap member included in the pressure switch of FIG. 1, wherein FIG. 2A is a plan view, and FIG. 2B is an enlarged view of a part of the roughened portion of FIG. (The roughened portion is composed of a plurality of linear grooves parallel to each other formed at the joint portion of the outer surface of the cap member). FIG. 3 is a diagram for explaining a welding process of the joint and cap member provided in the pressure switch of FIG. 1, wherein (a) is a longitudinal sectional view showing a state before welding, and (b) is after welding. It is a longitudinal cross-sectional view which shows the state. In addition, the concept of “upper and lower” in the following description corresponds to the upper and lower sides in FIG. 1 and indicates the relative positional relationship between the members, and does not indicate the absolute positional relationship.

図１に示すように、本実施形態の圧力スイッチ（図中、符号１で示す）は、接続部材としての継手１０と、ケース部品としてのキャップ部材２０と、円板３０と、ストッパ４０と、スイッチ部５０と、外カバー６０と、ハウジング６１と、を有している。これら部材は、軸心が軸線Ｌに重なるように配置されている。 As shown in FIG. 1, the pressure switch of the present embodiment (indicated by reference numeral 1 in the figure) includes a joint 10 as a connecting member, a cap member 20 as a case component, a disk 30, a stopper 40, The switch unit 50, the outer cover 60, and the housing 61 are included. These members are arranged such that the axis overlaps the axis L.

継手１０は、例えば、黄銅などの金属を材料として構成されている。継手１０を構成する材料は、黄銅以外にも、ステンレス、アルミ、銅、銅合金など後述するキャップ部材２０を構成する材料（ステンレス又はアルミニウム）と抵抗溶接が可能な金属であれば、その種類は任意である。継手１０は、継手本体部１１と、壁部１２と、円筒部１３と、プロジェクション１４と、を一体に有している。 The joint 10 is made of, for example, a metal such as brass. If the material which comprises the coupling 10 is a metal which can be resistance welded with the material (stainless steel or aluminum) which comprises the cap member 20 mentioned later other than brass, such as stainless steel, aluminum, copper, and a copper alloy, the kind will be Is optional. The joint 10 integrally includes a joint main body part 11, a wall part 12, a cylindrical part 13, and a projection 14.

継手本体部１１は、例えば、ナット状の六角筒状に形成されており、その内周面には、図示しない流体が流れる配管と螺合される雌ねじ１１ａが形成されている。 The joint body 11 is formed in, for example, a nut-shaped hexagonal cylinder, and an internal thread 11a is formed on the inner peripheral surface thereof.

壁部１２は、継手本体部１１の図中上端を塞ぐように当該継手本体部１１と一体に設けられている。壁部１２には、後述するキャップ部材２０と対向される平坦面１２ａが設けられており、また、壁部１２の中央付近には、壁部１２の外側と継手本体部１１の内側空間１１ｂとを貫通する導通路１２ｂが設けられている。 The wall 12 is provided integrally with the joint body 11 so as to close the upper end of the joint body 11 in the figure. The wall portion 12 is provided with a flat surface 12a facing a cap member 20 to be described later, and in the vicinity of the center of the wall portion 12, an outer side of the wall portion 12 and an inner space 11b of the joint main body portion 11 are provided. A conduction path 12b penetrating through is provided.

円筒部１３は、継手本体部１１と同軸に配置されて壁部１２の平坦面１２ａに一端１３ａが連接されている。円筒部１３の内側空間１３ｂは、壁部１２の導通路１２ｂと連通されている。なお、継手１０は、円筒部１３を省略した構成でもよい。 The cylindrical portion 13 is arranged coaxially with the joint main body portion 11, and one end 13 a is connected to the flat surface 12 a of the wall portion 12. The inner space 13 b of the cylindrical portion 13 is in communication with the conduction path 12 b of the wall portion 12. The joint 10 may have a configuration in which the cylindrical portion 13 is omitted.

プロジェクション１４は、壁部１２の平坦面１２ａに、円筒部１３を囲む円環状で断面が山型となるように形成された突部である。プロジェクション１４は、その中心が軸線Ｌに重なるように配置されている。プロジェクション１４の先端は、その全周にわたって後述するキャップ部材２０に溶接により接合されている。 The projection 14 is a protrusion formed on the flat surface 12a of the wall 12 so as to have an annular shape surrounding the cylindrical portion 13 and to have a mountain-shaped cross section. The projection 14 is arranged so that the center thereof overlaps the axis L. The tip of the projection 14 is joined to the cap member 20 described later by welding over the entire circumference.

継手１０では、継手本体部１１の内側空間１１ｂ、壁部１２の導通路１２ｂ及び円筒部１３の内側空間１３ｂが互いに連通されて継手１０の内孔１０Ａを構成する。 In the joint 10, the inner space 11 b of the joint body portion 11, the conduction path 12 b of the wall portion 12, and the inner space 13 b of the cylindrical portion 13 are communicated with each other to form an inner hole 10 A of the joint 10.

キャップ部材２０は、例えば、ステンレスを材料として構成されている。キャップ部材２０を構成する材料は、ステンレス以外にも、アルミニウム（アルミニウム合金含む）であってもよい。キャップ部材２０は、お椀状の椀状部２１と、その外周の円環状のフランジ部２２とを一体に有している。椀状部２１の中心には、その外側面２１ａと内側面２１ｂとを貫通する貫通孔２３が開口されている。キャップ部材２０の貫通孔２３には、継手１０の円筒部１３が挿通されている。これにより、継手１０の内孔１０Ａと後述する圧力室２４（つまり、キャップ部材２０の内側面２１ｂ側の空間）とが連通される。 The cap member 20 is made of, for example, stainless steel. The material constituting the cap member 20 may be aluminum (including an aluminum alloy) in addition to stainless steel. The cap member 20 integrally includes a bowl-shaped bowl-shaped part 21 and an annular flange part 22 on the outer periphery thereof. A through-hole 23 that penetrates the outer side surface 21a and the inner side surface 21b is opened at the center of the bowl-shaped portion 21. The cylindrical portion 13 of the joint 10 is inserted into the through hole 23 of the cap member 20. As a result, the inner hole 10A of the joint 10 and the pressure chamber 24 described later (that is, the space on the inner surface 21b side of the cap member 20) communicate with each other.

キャップ部材２０の椀状部２１の継手１０側を向く外側面２１ａにおける当該継手１０との接合箇所Ｓには、図２（ａ）に示すように、レーザー照射によって表面処理された円環状の粗面化部２５が形成されている。この粗面化部２５は、貫通孔２３を囲む上記プロジェクション１４の径と略同一の径となる円環状に形成されている。粗面化部２５と接合箇所Ｓとは重複している。 As shown in FIG. 2 (a), an annular rough surface that has been surface-treated by laser irradiation is provided at the joint S with the joint 10 on the outer surface 21a facing the joint 10 side of the flange portion 21 of the cap member 20. A chamfer 25 is formed. The roughened portion 25 is formed in an annular shape having a diameter substantially the same as the diameter of the projection 14 surrounding the through hole 23. The roughened portion 25 and the joint portion S overlap.

本実施形態において、粗面化部２５は、図２（ｂ）に示すように、キャップ部材２０の椀状部２１の外側面２１ａに互いに平行な直線状に形成された複数の溝２６で構成されている。これら複数の溝２６は、レーザー照射位置を溝ピッチ分ずつずらしながら所定の一方向に複数回走査して形成されている。複数の溝２６の深さは、１μｍ〜５μｍ程度とされている。キャップ部材２０はステンレス製（又はアルミニウム製）であるため表面に酸化皮膜が形成されているが、粗面化部２５では、全体にわたって酸化皮膜が均一に削減されまたゴミ等の付着物が除去されており、粗面化部２５全体の状態が均一にされている。この粗面化部２５は、継手１０のプロジェクション１４の先端と溶接により接合される。継手１０のプロジェクション１４とキャップ部材２０の粗面化部２５との間に二点鎖線で示す溶接部αが形成されている。 In the present embodiment, the roughened portion 25 is constituted by a plurality of grooves 26 formed in a straight line parallel to each other on the outer surface 21a of the flange-shaped portion 21 of the cap member 20, as shown in FIG. Has been. The plurality of grooves 26 are formed by scanning a plurality of times in a predetermined direction while shifting the laser irradiation position by the groove pitch. The depth of the plurality of grooves 26 is about 1 μm to 5 μm. Since the cap member 20 is made of stainless steel (or made of aluminum), an oxide film is formed on the surface. However, in the roughened portion 25, the oxide film is uniformly reduced over the entire surface and deposits such as dust are removed. Thus, the entire roughened portion 25 is made uniform. The roughened portion 25 is joined to the tip of the projection 14 of the joint 10 by welding. A welded portion α indicated by a two-dot chain line is formed between the projection 14 of the joint 10 and the roughened portion 25 of the cap member 20.

円板３０は、例えば、薄膜状のステンレス等の金属で構成されており、その中央部分が大きな曲率半径の球面形状に形成され、外周部が平坦にされた円板状に形成されている。円板３０は、その中央部分がキャップ部材２０側に凸となるようにして、キャップ部材２０の図中上側に重ねて配置されている。また、円板３０がキャップ部材２０に重ねられることにより、円板３０の椀状部２１と円板３０との間に圧力室２４が形成される。 The disk 30 is made of, for example, a metal such as thin film stainless steel, and is formed in a disk shape having a central portion formed into a spherical shape with a large curvature radius and a flat outer periphery. The disc 30 is disposed so as to overlap the upper side of the cap member 20 in the figure so that the central portion thereof is convex toward the cap member 20 side. In addition, the pressure chamber 24 is formed between the bowl-shaped portion 21 of the disk 30 and the disk 30 by overlapping the disk 30 on the cap member 20.

ストッパ４０は、例えば、ステンレスなどの金属を材料として構成されており、円板３０と外径が略同一で中央に開口４１が設けられた円環状に形成されている。ストッパ４０は、円板３０の図中上側に重ねて配置されている。圧力室２４内の圧力が予め設定された設定圧力未満であるとき、円板３０はその中央部分の球面形状を保ち、これによりストッパ４０と円板３０との間には隙間が形成される。また、圧力室２４内の圧力が上記設定圧力以上であるとき、円板３０はその中央部分の球面形状が変形してストッパ４０と重なり、ストッパ４０と円板３０との間の隙間が無くなる。即ち、ストッパ４０は、円板３０の変形を規制する。キャップ部材２０、円板３０及びストッパ４０は、順次重ねて配置されるとともに、それぞれの外周部が全周にわたって互いに一体溶接されている。 The stopper 40 is made of, for example, a metal such as stainless steel, and is formed in an annular shape having substantially the same outer diameter as the disk 30 and having an opening 41 in the center. The stopper 40 is disposed so as to overlap the upper side of the disk 30 in the drawing. When the pressure in the pressure chamber 24 is less than a preset pressure set in advance, the disc 30 maintains the spherical shape of the central portion thereof, so that a gap is formed between the stopper 40 and the disc 30. When the pressure in the pressure chamber 24 is equal to or higher than the set pressure, the spherical shape of the central portion of the disc 30 is deformed and overlaps with the stopper 40, and the gap between the stopper 40 and the disc 30 disappears. That is, the stopper 40 restricts the deformation of the disc 30. The cap member 20, the disk 30 and the stopper 40 are sequentially stacked and their outer peripheral portions are integrally welded to each other over the entire circumference.

スイッチ部５０は、中央に軸孔５１ａが形成されたガイド５１と、ガイド５１の軸孔５１ａに嵌挿された軸５２と、ガイド５１の周囲に嵌合する円筒状の端子台５３とを有している。端子台５３には、第１端子５４と第２端子５５が固定され、第１端子５４には接点板５４ａが取り付けられている。そして、接点板５４ａには第１接点５４ｂが、第２端子５５には第２接点５５ａが取り付けられている。スイッチ部５０は、ストッパ４０の図中上側に重ねて配置されている。また、スイッチ部５０の軸５２は、図１に示す圧力スイッチ１の設置状態（具体的には、軸５２に対して、接点板５４ａが鉛直方向上方にあり、円板３０が鉛直方向下方にある設置状態）において、図中上側の一端が接点板５４ａに若干のクリアランス（間隔）を設けて近接されており、図中下側の他端が円板３０の中央に当接されている。 The switch unit 50 includes a guide 51 having a shaft hole 51 a formed at the center thereof, a shaft 52 fitted into the shaft hole 51 a of the guide 51, and a cylindrical terminal block 53 fitted around the guide 51. doing. A first terminal 54 and a second terminal 55 are fixed to the terminal block 53, and a contact plate 54 a is attached to the first terminal 54. A first contact 54 b is attached to the contact plate 54 a, and a second contact 55 a is attached to the second terminal 55. The switch part 50 is disposed so as to overlap the upper side of the stopper 40 in the figure. Further, the shaft 52 of the switch unit 50 is installed in a state where the pressure switch 1 shown in FIG. 1 is installed (specifically, the contact plate 54a is vertically upward with respect to the shaft 52, and the disc 30 is vertically downward). In a certain installation state, one end on the upper side in the figure is close to the contact plate 54a with a slight clearance (interval), and the other end on the lower side in the figure is in contact with the center of the disc 30.

外カバー６０は、例えば、ステンレス製又は銅製の薄板からなり、キャップ部材２０、円板３０、ストッパ４０及び端子台５３のそれぞれの外周部をかしめにより固着している。 The outer cover 60 is made of, for example, a thin plate made of stainless steel or copper, and the outer peripheral portions of the cap member 20, the disc 30, the stopper 40, and the terminal block 53 are fixed by caulking.

ハウジング６１は、例えば、合成樹脂などを材料として構成されており、スイッチ部５０における外カバー６０から突出された部分が嵌め込まれる。ハウジング６１には、一対のリード線６２、６３が設けられており、スイッチ部５０が嵌め込まれることで、スイッチ部５０の第１端子５４及び第２端子５５がこれら一対のリード線６２、６３に接続される。 The housing 61 is made of, for example, synthetic resin or the like, and a portion protruding from the outer cover 60 in the switch unit 50 is fitted therein. The housing 61 is provided with a pair of lead wires 62 and 63, and when the switch unit 50 is fitted, the first terminal 54 and the second terminal 55 of the switch unit 50 are connected to the pair of lead wires 62 and 63. Connected.

以上の構成により、圧力スイッチ１は、継手１０を介して流体がキャップ部材２０の圧力室２４内に導入され、流体の圧力に応じて円板３０が変形して軸５２を押す。そして、圧力が予め設定された設定圧力になると、軸５２に連動して第１接点５４ｂが第２接点５５ａから離間し、スイッチがＯＦＦとなる。これにより、流体の圧力が設定圧力に達したことを検知できる。 With the above configuration, in the pressure switch 1, the fluid is introduced into the pressure chamber 24 of the cap member 20 through the joint 10, and the disk 30 is deformed and pushes the shaft 52 according to the pressure of the fluid. When the pressure reaches a preset pressure, the first contact 54b is separated from the second contact 55a in conjunction with the shaft 52, and the switch is turned off. Thereby, it can be detected that the pressure of the fluid has reached the set pressure.

次に、上述した圧力スイッチの製造方法の一例について、図２、図３を参照して説明する。 Next, an example of a method for manufacturing the pressure switch described above will be described with reference to FIGS.

（１：表面処理工程）まず、図２（ａ）、（ｂ）に示すように、キャップ部材２０のキャップ部材２０の椀状部２１の継手１０側を向く外側面２１ａにおける当該継手１０との接合箇所Ｓにレーザーを照射して、円環状の粗面化部２５を形成する。具体的には、レーザー照射位置を溝ピッチ分ずつずらしながら所定の一方向に複数回走査して、接合箇所Ｓ全体に互いに平行な直線状の複数の溝２６を形成して、これら複数の溝２６からなる粗面化部２５を形成する。 (1: Surface treatment step) First, as shown in FIGS. 2A and 2B, the outer surface 21a of the cap member 20 of the cap member 20 facing the joint 10 side of the cap member 20 is connected to the joint 10 on the outer surface 21a. An annular roughened portion 25 is formed by irradiating the joining portion S with a laser. Specifically, a plurality of linear grooves 26 that are parallel to each other are formed on the entire joint S by scanning the laser irradiation position a plurality of times in a predetermined direction while shifting the laser irradiation position by the groove pitch. A roughened portion 25 made of 26 is formed.

上記表面処理工程で形成された粗面化部２５では、全体にわたって酸化皮膜が均一に削減されまたゴミ等の付着物が除去されており、粗面化部２５全体の状態が均一にされている。 In the roughened portion 25 formed in the surface treatment step, the oxide film is uniformly reduced over the entire surface, and deposits such as dust are removed, so that the state of the entire roughened portion 25 is made uniform. .

（２：溶接工程）次に、図３（ａ）に示すように、継手１０の円筒部１３をキャップ部材２０の貫通孔２３に挿通し、継手１０のプロジェクション１４の先端を、キャップ部材２０の粗面化部２５に当接させる。そして、この状態で継手１０及びキャップ部材２０に電圧を印加する。これにより、継手１０のプロジェクション１４の先端及びキャップ部材２０の粗面化部２５を通じて継手１０及びキャップ部材２０に電流が流れ、この電流による発熱によって、継手１０のプロジェクション１４の先端とキャップ部材２０の粗面化部２５とが溶融して互いに溶接（即ち、抵抗溶接）して接合される。 (2: Welding Step) Next, as shown in FIG. 3A, the cylindrical portion 13 of the joint 10 is inserted into the through hole 23 of the cap member 20, and the tip of the projection 14 of the joint 10 is connected to the cap member 20. The surface is brought into contact with the roughened portion 25. In this state, a voltage is applied to the joint 10 and the cap member 20. As a result, a current flows to the joint 10 and the cap member 20 through the tip of the projection 14 of the joint 10 and the roughened portion 25 of the cap member 20, and due to heat generated by this current, the tip of the projection 14 of the joint 10 and the cap member 20 The roughened portion 25 is melted and joined to each other by welding (that is, resistance welding).

上記溶接工程では、それに先立つ表面処理工程において粗面化部２５全体の状態が均一にされているので、継手１０のプロジェクション１４の先端とキャップ部材２０の粗面化部２５との間に均一に電流が流れて溶接が行われる。これにより、継手１０のプロジェクション１４とキャップ部材２０の粗面化部２５との間に溶接部αが形成される。 In the welding process, since the entire roughened portion 25 is made uniform in the surface treatment step prior to the welding step, it is uniformly between the tip of the projection 14 of the joint 10 and the roughened portion 25 of the cap member 20. An electric current flows and welding is performed. As a result, a welded portion α is formed between the projection 14 of the joint 10 and the roughened portion 25 of the cap member 20.

（３：組立工程）それから、外カバー６０内に、キャップ部材２０と円板３０とストッパ４０とが互いに一体溶接されてなる溶接体及びスイッチ部５０の一部を順次重ねて収容するとともに、外カバー６０の両端部をかしめて、これら部材を固定する。そして、ハウジング６１内にスイッチ部５０における外カバー６０から突出された部分を嵌め込み、スイッチ部５０の第１端子５４及び第２端子５５がこれら一対のリード線６２、６３を接続する。このようにして、圧力スイッチ１が完成する。 (3: Assembly process) Then, in the outer cover 60, the cap member 20, the disk 30 and the stopper 40 are integrally welded to each other, and a part of the switch unit 50 is sequentially stacked and accommodated. The both ends of the cover 60 are caulked to fix these members. A portion of the switch unit 50 that protrudes from the outer cover 60 is fitted into the housing 61, and the first terminal 54 and the second terminal 55 of the switch unit 50 connect the pair of lead wires 62 and 63. In this way, the pressure switch 1 is completed.

以上説明したように、本実施形態の圧力スイッチ１の製造方法は、流体が流れる配管が接続される内孔１０Ａが形成された黄銅製の継手１０と、継手１０が外側面２１ａに接合され、該継手１０の内孔１０Ａと内側面２１ｂ側の圧力室２４とを連通させる外側面２１ａと内側面２１ｂとを貫通する貫通孔２３が形成されたステンレス製のキャップ部材２０と、を備えた圧力スイッチの製造方法である。そして、この製造方法は、キャップ部材２０の外側面２１ａにおける貫通孔２３を囲む環状の継手１０との接合箇所Ｓにレーザーを照射して、当該接合箇所Ｓ全体の状態が均一になるように表面処理を行う表面処理工程と、継手１０の内孔１０Ａとキャップ部材２０の貫通孔２３とを連通させた状態で、表面処理工程で上記表面処理が行われた接合箇所Ｓの全周にわたって継手１０を抵抗溶接によって接合する溶接工程と、を含む。 As described above, the manufacturing method of the pressure switch 1 of the present embodiment is such that the joint 10 made of brass in which the inner hole 10A to which the pipe through which the fluid flows is connected is formed and the joint 10 is joined to the outer surface 21a, A pressure provided with a cap member 20 made of stainless steel in which a through hole 23 penetrating the outer side surface 21a and the inner side surface 21b that communicates the inner hole 10A of the joint 10 and the pressure chamber 24 on the inner side surface 21b side is formed. It is a manufacturing method of a switch. And this manufacturing method irradiates the joining location S with the annular joint 10 surrounding the through-hole 23 in the outer side surface 21a of the cap member 20 so that the state of the entire joining location S is uniform. In a state where the surface treatment step for performing the treatment and the inner hole 10A of the joint 10 and the through hole 23 of the cap member 20 are communicated with each other, the joint 10 is formed over the entire circumference of the joint S where the surface treatment is performed in the surface treatment step. And a welding process for joining them by resistance welding.

また、表面処理工程では、接合箇所Ｓ全体に複数の溝２６を形成するようにレーザーを複数回走査して照射して粗面化部２５を形成する。 In the surface treatment process, the roughened portion 25 is formed by scanning and irradiating the laser a plurality of times so as to form a plurality of grooves 26 in the entire joining portion S.

また、表面処理工程では、接合箇所Ｓ全体に互いに平行な直線状の複数の溝２６からなる粗面化部２５を形成する。 Further, in the surface treatment step, the roughened portion 25 composed of a plurality of linear grooves 26 parallel to each other is formed on the entire joining portion S.

以上より、本実施形態によれば、キャップ部材２０に継手１０を抵抗溶接によって接合する溶接工程より前に、キャップ部材２０における継手１０との接合箇所Ｓにレーザーを照射して、当該接合箇所Ｓ全体の状態が均一になるように表面処理を行う表面処理工程を有している。そのため、抵抗溶接を行う時点で、キャップ部材２０における継手１０との接合箇所Ｓの酸化皮膜が削減又は除去され、また、ゴミ等の付着物が除去されて、該接合箇所Ｓ全体の状態が均一になる。これにより、接合箇所Ｓ全体にわたって抵抗溶接を均一に行うことができ、ステンレス製のキャップ部材２０とこのキャップ部材２０に抵抗溶接により接合される継手１０との接合状態がより安定した圧力スイッチ１を得ることができる。 As mentioned above, according to this embodiment, before the welding process which joins the joint 10 to the cap member 20 by resistance welding, a laser is irradiated to the joining location S with the joint 10 in the cap member 20, and the said joining location S is concerned. It has a surface treatment process for performing a surface treatment so that the entire state is uniform. Therefore, at the time of resistance welding, the oxide film at the joint portion S with the joint 10 in the cap member 20 is reduced or removed, and adhering matters such as dust are removed, and the state of the entire joint portion S is uniform. become. Thereby, resistance welding can be performed uniformly over the entire joining portion S, and the pressure switch 1 in which the joining state of the stainless cap member 20 and the joint 10 joined to the cap member 20 by resistance welding is more stable. Can be obtained.

また、表面処理工程では、キャップ部材２０の接合箇所Ｓ全体に複数の溝２６を形成するようにレーザーを複数回走査して照射する。これにより、例えば、断続的にレーザーを照射するようなレーザー制御に比べて、簡易なレーザー制御によってキャップ部材２０の接合箇所Ｓの表面処理を行うことができる。 Further, in the surface treatment step, the laser is scanned and irradiated a plurality of times so as to form a plurality of grooves 26 in the entire joining portion S of the cap member 20. Thereby, for example, the surface treatment of the joining portion S of the cap member 20 can be performed by simple laser control as compared with laser control in which laser is intermittently irradiated.

また、表面処理工程では、キャップ部材２０の接合箇所Ｓ全体に互いに平行な直線状の複数の溝２６を形成するようにレーザーを照射する。これにより、例えば、断続的にレーザーを照射するようなレーザー制御や曲線状にレーザーを照射するレーザー制御に比べて、非常に簡易なレーザー制御によってキャップ部材２０の接合箇所Ｓの表面処理を行うことができる。 Further, in the surface treatment step, laser is irradiated so as to form a plurality of linear grooves 26 parallel to each other over the entire joining portion S of the cap member 20. Thereby, for example, compared with laser control that irradiates laser intermittently or laser control that irradiates the laser in a curved shape, surface treatment of the joining portion S of the cap member 20 is performed by very simple laser control. Can do.

（第２の実施形態）
以下に、本発明の一実施形態の製造方法で製造される弁装置及びその製造方法について、図４、図５を参照して説明する。この流体関連機能装置としての弁装置は、流体が流れる配管に接続されて、当該配管を流れる流体の流量を制御するものである。 (Second Embodiment)
Below, the valve apparatus manufactured with the manufacturing method of one Embodiment of this invention and its manufacturing method are demonstrated with reference to FIG. 4, FIG. The valve device as the fluid-related functional device is connected to a pipe through which fluid flows, and controls the flow rate of the fluid flowing through the pipe.

図４は、本発明の他の一実施形態の製造方法で製造される弁装置の縦断面図である。図５は、図４の弁装置が備えるケース部品の構成を示す図であって、（ａ）は、平面図であり、（ｂ）は、（ａ）の粗面化部の一部を拡大した図である（粗面化部が、ケース部品の外側面の接合箇所に形成された互いに平行な直線状の複数の溝で構成されている）。なお、以下の説明における「上下」の概念は、図４における上下に対応しており、各部材の相対的な位置関係を示すものであって、絶対的な位置関係を示すものではない。 FIG. 4 is a longitudinal sectional view of a valve device manufactured by the manufacturing method according to another embodiment of the present invention. FIGS. 5A and 5B are diagrams showing a configuration of a case component included in the valve device of FIG. 4, wherein FIG. 5A is a plan view, and FIG. 5B is an enlarged view of a part of the roughened portion of FIG. (The roughened portion is constituted by a plurality of linear grooves parallel to each other formed at the joint portion of the outer surface of the case component). Note that the concept of “upper and lower” in the following description corresponds to the upper and lower in FIG. 4, and indicates the relative positional relationship between the members, and does not indicate the absolute positional relationship.

図４に示すように、本実施形態の弁装置（図中、符号２で示す）は、接続部材としてのハウジング７０と、ケース８０と、を有している。これら部材は軸心が軸線Ｌに重なるように配置されている。 As shown in FIG. 4, the valve device of the present embodiment (indicated by reference numeral 2 in the drawing) has a housing 70 as a connecting member and a case 80. These members are arranged such that the shaft center overlaps the axis L.

ハウジング７０は、例えば、黄銅などの金属を材料として略円柱状に構成されている。ハウジング７０を構成する材料は、黄銅以外にも、ステンレス、アルミ、銅、銅合金など後述するケース８０を構成する材料（ステンレス又はアルミニウム）と抵抗溶接が可能なものであれば、その種類は任意である。ハウジング７０は、ハウジング本体部７１と、円筒部７３と、プロジェクション７４と、を有している。 The housing 70 is configured in a substantially cylindrical shape using, for example, a metal such as brass. The material constituting the housing 70 can be of any type as long as it can be resistance-welded with a material (stainless steel or aluminum) constituting the case 80 described later, such as stainless steel, aluminum, copper, copper alloy, etc. in addition to brass. It is. The housing 70 has a housing main body 71, a cylindrical portion 73, and a projection 74.

ハウジング本体部７１は、例えば、円筒状に形成されており、内側に弁室７５が形成されている。また、ハウジング本体部７１の周壁７１ａには、第１配管Ｈ１が第１ポート７６を通じて弁室７５に連通するように固定して取り付けられている。ハウジング本体部７１の図中下方の壁部７１ｂには、第２配管Ｈ２が第２ポート７７を通じて弁室７５に連通するように固定して取り付けられている。また、ハウジング本体部７１の図中上方の端面７１ｃは平坦面とされている。 The housing main body 71 is formed in a cylindrical shape, for example, and a valve chamber 75 is formed inside. The first pipe H 1 is fixedly attached to the peripheral wall 71 a of the housing main body 71 so as to communicate with the valve chamber 75 through the first port 76. A second pipe H 2 is fixedly attached to a lower wall portion 71 b of the housing main body 71 in the drawing so as to communicate with the valve chamber 75 through the second port 77. Further, the upper end surface 71c of the housing main body 71 in the drawing is a flat surface.

円筒部７３は、ハウジング本体部７１と同軸に配置されて端面７１ｃに一端７３ａが連接されている。円筒部７３の内側空間７３ｂは、弁室７５と連通されている。なお、ハウジング７０は、円筒部７３を省略した構成でもよい。 The cylindrical portion 73 is disposed coaxially with the housing main body 71 and has one end 73a connected to the end surface 71c. The inner space 73 b of the cylindrical portion 73 is in communication with the valve chamber 75. The housing 70 may have a configuration in which the cylindrical portion 73 is omitted.

プロジェクション７４は、ハウジング本体部の端面７１ｃに、円筒部７３を囲む円環状で断面が山型となるように形成された突部である。プロジェクション７４は、その中心が軸線Ｌに重なるように配置されている。プロジェクション７４の先端は、その全周にわたって後述するケース部品８１に溶接により接合されている。 The projection 74 is a protrusion formed on the end surface 71c of the housing main body so as to have an annular shape surrounding the cylindrical portion 73 and to have a mountain shape in cross section. The projection 74 is disposed so that its center overlaps the axis L. The tip of the projection 74 is joined to a case component 81, which will be described later, by welding over the entire circumference.

ハウジング７０では、ハウジング本体部７１の弁室７５、第１ポート７６及び第２ポート７７、並びに、円筒部７３の内側空間７３ｂが、ハウジング７０の内孔７０Ａを構成する。 In the housing 70, the valve chamber 75 of the housing main body 71, the first port 76 and the second port 77, and the inner space 73 b of the cylindrical portion 73 constitute an inner hole 70 A of the housing 70.

ケース８０は、例えば、ステンレスを材料として略円筒状に構成されている。ケース８０を構成する材料は、ステンレス以外にも、アルミニウム（アルミニウム合金含む）であってもよい。ケース８０は、円板状のケース部品８１と、コップ形状のケース本体８２と、を有している。ケース本体８２は、図中上方にコップ形状の底部が位置し、図中下方の端部の開口を塞ぐように当該端部にケース部品８１が溶接等により固定して取り付けられている。ケース部品８１の中心には、その外側面８１ａと内側面８１ｂとを貫通する貫通孔８３が開口されている。ケース部品８１の貫通孔８３には、ハウジング７０の円筒部７３が挿通されている。これにより、ハウジング７０の内孔７０Ａとケース本体８２の内側空間８４（つまり、ケース部品８１の内側面８１ｂ側の空間）とが連通される。 The case 80 is configured in a substantially cylindrical shape using, for example, stainless steel as a material. The material constituting the case 80 may be aluminum (including an aluminum alloy) in addition to stainless steel. The case 80 includes a disk-shaped case part 81 and a cup-shaped case main body 82. The case main body 82 has a cup-shaped bottom portion located in the upper part in the figure, and a case part 81 is fixedly attached to the end part by welding or the like so as to close the opening of the lower end part in the figure. In the center of the case component 81, a through hole 83 is formed through the outer side surface 81a and the inner side surface 81b. The cylindrical portion 73 of the housing 70 is inserted into the through hole 83 of the case component 81. Thereby, the inner hole 70 A of the housing 70 and the inner space 84 (that is, the space on the inner surface 81 b side of the case component 81) are communicated with each other.

ケース部品８１のハウジング７０側を向く外側面８１ａにおける当該ハウジング７０との接合箇所Ｓには、図５（ａ）に示すように、レーザー照射によって表面処理された円環状の粗面化部８５が形成されている。この粗面化部８５は、貫通孔８３を囲む上記プロジェクション７４の径と略同一の径となる円環状に形成されている。粗面化部８５と接合箇所Ｓとは重複している。 As shown in FIG. 5 (a), an annular roughened portion 85 surface-treated by laser irradiation is provided at the joint S with the housing 70 on the outer surface 81a facing the housing 70 side of the case component 81. Is formed. The roughened portion 85 is formed in an annular shape having a diameter substantially the same as the diameter of the projection 74 surrounding the through hole 83. The roughened portion 85 and the joint portion S overlap.

本実施形態において、粗面化部８５は、図５（ｂ）に示すように、互いに平行な直線状に形成された複数の溝８６で構成されている。これら複数の溝８６は、レーザー照射位置を溝ピッチ分ずつずらしながら所定の一方向に複数回走査して形成されている。複数の溝８６の深さは、１μｍ〜５μｍ程度とされている。ケース部品８１はステンレス製（又はアルミニウム製）であるため表面に酸化皮膜が形成されているが、粗面化部８５では、全体にわたって酸化皮膜が均一に削減されまたゴミ等の付着物が除去されており、粗面化部８５全体の状態が均一にされている。この粗面化部８５は、ハウジング７０のプロジェクション７４の先端と溶接により接合される。ハウジング７０のプロジェクション７４とケース部品８１の粗面化部８５との間に二点鎖線で示す溶接部αが形成されている。 In the present embodiment, the roughened portion 85 includes a plurality of grooves 86 formed in a straight line parallel to each other, as shown in FIG. The plurality of grooves 86 are formed by scanning a plurality of times in a predetermined direction while shifting the laser irradiation position by the groove pitch. The depth of the plurality of grooves 86 is about 1 μm to 5 μm. Since the case component 81 is made of stainless steel (or aluminum), an oxide film is formed on the surface. However, in the roughened portion 85, the oxide film is uniformly reduced over the entire surface, and deposits such as dust are removed. The entire roughened portion 85 is made uniform. The roughened portion 85 is joined to the tip of the projection 74 of the housing 70 by welding. A welded portion α indicated by a two-dot chain line is formed between the projection 74 of the housing 70 and the roughened portion 85 of the case component 81.

また、弁装置２は、ハウジング７０の弁室７５内に図示しない弁体が配設されており、ケース８０のケース本体８２内に弁体を駆動する図示しない駆動機構等が配設されている。 In the valve device 2, a valve body (not shown) is provided in the valve chamber 75 of the housing 70, and a drive mechanism (not shown) that drives the valve body is provided in the case body 82 of the case 80. .

以上の構成により、弁装置２は、図示しない駆動機構により弁体が駆動される。そして、当該弁体が弁ポートとしての第２ポート７７を閉じる弁閉位置にあるとき、第１配管Ｈ１からハウジング７０の弁室７５内に導入された流体は、弁室７５内に留まり第２配管Ｈ２への流動を阻止される。また、弁体が第２ポート７７を開く弁開位置にあるとき、第１配管Ｈ１からハウジング７０の弁室７５内に導入された流体は、第２ポート７７を通じて第２配管Ｈ２へ流動する。 With the above configuration, the valve body of the valve device 2 is driven by a drive mechanism (not shown). When the valve body is in the valve closed position for closing the second port 77 serving as the valve port, the fluid introduced from the first pipe H1 into the valve chamber 75 of the housing 70 remains in the valve chamber 75 and is second. The flow to the pipe H2 is prevented. Further, when the valve body is in the valve opening position that opens the second port 77, the fluid introduced from the first pipe H 1 into the valve chamber 75 of the housing 70 flows to the second pipe H 2 through the second port 77.

次に、上述した弁装置の製造方法の一例について、図５（ａ）、（ｂ）を参照して説明する。 Next, an example of a method for manufacturing the valve device described above will be described with reference to FIGS.

（１：表面処理工程）まず、図５（ａ）、（ｂ）に示すように、ケース部品８１のハウジング７０側を向く外側面８１ａにおける当該ハウジング７０との接合箇所Ｓにレーザーを照射して、円環状の粗面化部８５を形成する。具体的には、レーザー照射位置を溝ピッチ分ずつずらしながら所定の一方向に複数回走査して、接合箇所Ｓ全体に互いに平行な直線状の複数の溝２６を形成して、これら複数の溝８６からなる粗面化部８５を形成する。 (1: Surface treatment step) First, as shown in FIGS. 5A and 5B, a laser is applied to the joint portion S with the housing 70 on the outer surface 81a of the case component 81 facing the housing 70 side. An annular roughened portion 85 is formed. Specifically, a plurality of linear grooves 26 that are parallel to each other are formed on the entire joint S by scanning the laser irradiation position a plurality of times in a predetermined direction while shifting the laser irradiation position by the groove pitch. A roughened portion 85 made of 86 is formed.

上記表面処理工程で形成された粗面化部８５では、全体にわたって酸化皮膜が均一に削減されまたゴミ等の付着物が除去されており、粗面化部８５全体の状態が均一にされている。 In the roughened portion 85 formed in the surface treatment step, the oxide film is uniformly reduced over the entire surface, and deposits such as dust are removed, and the entire surface of the roughened portion 85 is made uniform. .

（２：溶接工程）次に、ハウジング７０の円筒部７３をケース本体８２に取り付けられる前のケース部品８１の貫通孔８３に挿通し、ハウジング７０のプロジェクション７４の先端を、ケース部品８１の粗面化部８５に当接させる。そして、この状態でハウジング７０及びケース部品８１に電圧を印加する。これにより、ハウジング７０のプロジェクション７４の先端及びケース部品８１の粗面化部８５を通じてハウジング７０及びケース部品８１に電流が流れ、この電流による発熱によって、ハウジング７０のプロジェクション７４の先端とケース部品８１の粗面化部８５とが溶融して互いに溶接（即ち、抵抗溶接）して接合される。 (2: Welding Step) Next, the cylindrical portion 73 of the housing 70 is inserted into the through hole 83 of the case component 81 before being attached to the case main body 82, and the projection 74 of the housing 70 is connected to the rough surface of the case component 81. It is made to contact | abut to the conversion part 85. In this state, a voltage is applied to the housing 70 and the case component 81. As a result, a current flows to the housing 70 and the case component 81 through the tip of the projection 74 of the housing 70 and the roughened portion 85 of the case component 81, and due to the heat generated by this current, the tip of the projection 74 of the housing 70 and the case component 81. The roughened portion 85 is melted and joined to each other by welding (that is, resistance welding).

上記溶接工程では、それに先立つ表面処理工程において粗面化部８５全体の状態が均一にされているので、ハウジング７０のプロジェクション７４の先端とケース部品８１の粗面化部８５との間に均一に電流が流れて溶接が行われる。これにより、ハウジング７０のプロジェクション７４とケース部品８１の粗面化部８５との間に溶接部αが形成される。 In the welding process, since the entire roughened portion 85 is made uniform in the surface treatment step prior to the welding process, it is uniformly between the tip of the projection 74 of the housing 70 and the roughened portion 85 of the case component 81. An electric current flows and welding is performed. As a result, a welded portion α is formed between the projection 74 of the housing 70 and the roughened portion 85 of the case component 81.

（３：組立工程）それから、ケース本体８２内に図示しない駆動機構を配設したのち、当該駆動機構に図示しない弁体を取り付ける。そして、ケース本体８２の開口を塞ぐようにケース本体８２にケース部品８１をレーザー溶接などにより溶接する。このようにして、弁装置２が完成する。 (3: Assembly process) Then, after arranging a drive mechanism (not shown) in the case body 82, a valve body (not shown) is attached to the drive mechanism. Then, the case component 81 is welded to the case body 82 by laser welding or the like so as to close the opening of the case body 82. In this way, the valve device 2 is completed.

以上説明したように、本実施形態の弁装置２の製造方法は、流体が流れる配管が接続される内孔７０Ａが形成された黄銅製のハウジング７０と、ハウジング７０が外側面８１ａに接合され、該ハウジング７０の内孔７０Ａと内側面８１ｂ側のケース本体８２の内側空間８４とを連通させる外側面８１ａと内側面８１ｂとを貫通する貫通孔８３が形成されたステンレス製のケース部品８１と、を備えた弁装置２の製造方法である。そして、この製造方法は、ケース部品８１の外側面８１ａにおける貫通孔８３を囲む環状のハウジング７０との接合箇所Ｓにレーザーを照射して、当該接合箇所Ｓ全体の状態が均一になるように表面処理を行う表面処理工程と、ハウジング７０の内孔７０Ａとケース部品８１の貫通孔８３とを連通させた状態で、表面処理工程で上記表面処理が行われた接合箇所Ｓの全周にわたってハウジング７０を抵抗溶接によって接合する溶接工程と、を含む。 As described above, the manufacturing method of the valve device 2 of the present embodiment includes a brass housing 70 in which an inner hole 70A to which a pipe through which a fluid flows is connected, and the housing 70 joined to the outer surface 81a. A case member 81 made of stainless steel having a through hole 83 penetrating the outer side surface 81a and the inner side surface 81b communicating with the inner hole 70A of the housing 70 and the inner space 84 of the case main body 82 on the inner side surface 81b side; It is a manufacturing method of the valve apparatus 2 provided with. And this manufacturing method irradiates laser to the joining location S with the cyclic | annular housing 70 surrounding the through-hole 83 in the outer side surface 81a of the case component 81, and the surface so that the state of the said joining location S whole becomes uniform. In a state where the surface treatment process for performing the treatment and the inner hole 70A of the housing 70 and the through hole 83 of the case component 81 are in communication, the housing 70 is formed over the entire circumference of the joint S where the surface treatment is performed in the surface treatment process. And a welding process for joining them by resistance welding.

また、表面処理工程では、接合箇所Ｓ全体に複数の溝を形成するようにレーザーを複数回走査して照射して粗面化部８５を形成する。 In the surface treatment step, the roughened portion 85 is formed by scanning and irradiating the laser a plurality of times so as to form a plurality of grooves in the entire joining portion S.

また、表面処理工程では、接合箇所Ｓ全体に互いに平行な直線状の複数の溝２６からなる粗面化部８５を形成する。 Further, in the surface treatment process, the roughened portion 85 including the plurality of linear grooves 26 parallel to each other is formed in the entire joining portion S.

以上より、本実施形態によれば、ケース部品８１にハウジング７０を抵抗溶接によって接合する溶接工程より前に、ケース部品８１におけるハウジング７０との接合箇所Ｓにレーザーを照射して、当該接合箇所Ｓ全体の状態が均一になるように表面処理を行う表面処理工程を有している。そのため、抵抗溶接を行う時点で、ケース部品８１におけるハウジング７０との接合箇所Ｓの酸化皮膜が削減又は除去され、また、ゴミ等の付着物が除去されて、該接合箇所Ｓ全体の状態が均一になる。これにより、接合箇所Ｓ全体にわたって抵抗溶接を均一に行うことができ、ステンレス製のケース部品８１とこのケース部品８１に抵抗溶接により接合されるハウジング７０との接合状態がより安定した弁装置２を得ることができる。 As mentioned above, according to this embodiment, before the welding process which joins the housing 70 to the case component 81 by resistance welding, the joining location S with the housing 70 in the case component 81 is irradiated with a laser, and the said joining location S is concerned. It has a surface treatment process for performing a surface treatment so that the entire state is uniform. Therefore, at the time of resistance welding, the oxide film at the joint portion S with the housing 70 in the case component 81 is reduced or removed, and adhering matters such as dust are removed, so that the entire state of the joint portion S is uniform. become. Thereby, the resistance welding can be uniformly performed over the entire joining portion S, and the valve device 2 in which the joining state between the stainless steel case part 81 and the housing 70 joined to the case part 81 by resistance welding is more stable. Can be obtained.

また、表面処理工程では、ケース部品８１の接合箇所Ｓ全体に複数の溝２６を形成するようにレーザーを複数回走査して照射する。これにより、例えば、断続的にレーザーを照射するようなレーザー制御に比べて、簡易なレーザー制御によってケース部品８１の接合箇所Ｓの表面処理を行うことができる。 Further, in the surface treatment step, the laser is scanned and irradiated a plurality of times so as to form a plurality of grooves 26 in the entire joining portion S of the case component 81. Thereby, for example, the surface treatment of the joint portion S of the case component 81 can be performed by simple laser control compared to laser control in which laser is intermittently irradiated.

また、表面処理工程では、ケース部品８１の接合箇所Ｓ全体に互いに平行な直線状の複数の溝２６を形成するようにレーザーを照射する。これにより、例えば、断続的にレーザーを照射するようなレーザー制御や曲線状にレーザーを照射するレーザー制御に比べて、非常に簡易なレーザー制御によってケース部品８１の接合箇所Ｓの表面処理を行うことができる。 Further, in the surface treatment step, the laser is irradiated so as to form a plurality of linear grooves 26 parallel to each other over the entire joining portion S of the case component 81. Thereby, for example, the surface treatment of the joint portion S of the case component 81 is performed by laser control that is very simple as compared with laser control that irradiates laser intermittently or laser control that irradiates laser in a curved shape. Can do.

以上、本発明について、好ましい実施形態を挙げて説明したが、本発明の流体関連機能装置の製造方法は上記実施形態の構成に限定されるものではない。 Although the present invention has been described with reference to the preferred embodiment, the method for manufacturing the fluid-related functional device of the present invention is not limited to the configuration of the above embodiment.

例えば、上述した第１の実施形態では、表面処理工程において、接合箇所Ｓ全体に互いに平行な直線状の複数の溝を形成するようにレーザーを照射する製造方法であったが、これに限定されるものではない。 For example, in the first embodiment described above, in the surface treatment step, the manufacturing method is such that a laser is irradiated so as to form a plurality of linear grooves that are parallel to each other in the entire joining portion S, but is not limited thereto. It is not something.

上述した表面処理工程において、接合箇所Ｓ全体に環状でかつ互いに交差しない同心状の複数の溝を形成するようにレーザーを照射するようにしてもよい。このようにすることで、図６（ａ）、（ｂ）に示すように、環状でかつ互いに交差しない同心状の複数の溝２６Ａからなる粗面化部２５Ａが形成される。これにより、例えば、断続的にレーザーを照射するようなレーザー制御に比べて、簡易なレーザー制御によって接合箇所Ｓの表面処理を行うことができる。 In the surface treatment step described above, the laser may be irradiated so that a plurality of concentric grooves that are annular and do not intersect with each other are formed on the entire joint S. By doing so, as shown in FIGS. 6A and 6B, a roughened portion 25 A composed of a plurality of concentric grooves 26 A that are annular and do not intersect with each other is formed. Thereby, compared with laser control which irradiates a laser intermittently, for example, the surface treatment of the joining location S can be performed by simple laser control.

または、表面処理工程において、接合箇所Ｓ全体に、互いに平行な直線状の第１の複数の溝２６１と、第１の複数の溝２６１と交差する方向に互いに平行な直線状の第２の複数の溝２６２と、を形成するようにレーザーを照射するようにしてもよい。このようにすることで、図７（ａ）、（ｂ）に示すように、互いに平行な直線状の第１の複数の溝２６１と、第１の複数の溝２６１と交差する方向に互いに平行な直線状の第２の複数の溝２６２と、からなる粗面化部２５Ｂが形成される。これにより、例えば、断続的にレーザーを照射するようなレーザー制御や曲線状にレーザーを照射するレーザー制御に比べて、非常に簡易なレーザー制御によって接合箇所Ｓの表面処理を行うことができる。また、接合箇所Ｓ全体の状態をより均一にできる。 Alternatively, in the surface treatment step, the first plurality of linear grooves 261 that are parallel to each other and the second plurality of straight lines that are parallel to each other in the direction intersecting the first plurality of grooves 261 in the entire joining portion S. The groove 262 may be irradiated with a laser so as to form the groove 262. By doing so, as shown in FIGS. 7A and 7B, the first plurality of linear grooves 261 parallel to each other and parallel to each other in the direction intersecting the first plurality of grooves 261. A rough surface 25B is formed which includes a plurality of straight second grooves 262. Thereby, for example, the surface treatment of the joint portion S can be performed by very simple laser control as compared with laser control that irradiates laser intermittently or laser control that irradiates laser in a curved shape. Moreover, the state of the whole joining location S can be made more uniform.

または、表面処理工程において、表面処理工程において、接合箇所Ｓの全面にレーザーを照射するようにしてもよい。このようにすることで、図８に示すように、接合箇所Ｓの全面が削られた粗面化部２５Ｃが形成される。これにより、接合箇所Ｓの全面が隙間無く表面処理を施されるので、当該接合箇所Ｓ全体の状態をより均一にできる。 Alternatively, in the surface treatment process, the entire surface of the joint portion S may be irradiated with laser in the surface treatment process. By doing in this way, as shown in FIG. 8, the roughening part 25C by which the whole surface of the joining location S was shaved is formed. Thereby, since the whole surface of the joining location S is subjected to surface treatment without a gap, the state of the entire joining location S can be made more uniform.

または、表面処理工程において、接合箇所Ｓ全体に、レーザーランプを定速で移動させながら断続的にレーザを照射するようにしてもよい。このようにすることで、互いに間隔をあけて設けられた水玉模様状の複数の穴で構成された粗面化部が形成される。 Alternatively, in the surface treatment step, the entire joining portion S may be irradiated with laser intermittently while moving the laser lamp at a constant speed. By doing in this way, the roughening part comprised by the several polka dot-shaped hole provided mutually spaced apart is formed.

また、これら表面処理工程のバリエーションについては、上述した第２の実施形態にも同様に適用可能である。 Moreover, the variations of these surface treatment steps can be similarly applied to the second embodiment described above.

また、上述した第１の実施形態では、接続部材としての継手１０をキャップ部材２０に抵抗溶接するものであったが、これに限定されるものではなく、図９に一例を示すように、継手１０に代えて、接続部材としての銅管９０をキャップ部材２０に抵抗溶接するようにしてもよい。この銅管９０は、銅管本体９１と、その図中上方の端部に設けられたフランジ部９２と、当該端部に設けられた円筒部９３と、フランジ部９２のキャップ部材２０側を向く面に設けられたプロジェクション９４と、を有している。 Further, in the first embodiment described above, the joint 10 as the connecting member is resistance welded to the cap member 20, but the present invention is not limited to this, and as shown in an example in FIG. Instead of 10, a copper tube 90 as a connection member may be resistance-welded to the cap member 20. The copper pipe 90 faces the copper pipe main body 91, a flange portion 92 provided at an upper end portion in the drawing, a cylindrical portion 93 provided at the end portion, and the cap member 20 side of the flange portion 92. And a projection 94 provided on the surface.

そして、銅管９０の円筒部９３をキャップ部材２０の貫通孔２３に挿通し、銅管９０のプロジェクション９４の先端を、キャップ部材２０の粗面化部２５に当接させる。そして、この状態で銅管９０及びキャップ部材２０に電圧を印加する。これにより、銅管９０のプロジェクション９４の先端及びキャップ部材２０の粗面化部２５を通じて銅管９０及びキャップ部材２０に電流が流れ、この電流による発熱によって、銅管９０のプロジェクション９４の先端とキャップ部材２０の粗面化部２５とが溶融して互いに溶接（即ち、抵抗溶接）して接合される。このように、本発明の目的に反しない限り、接続部材の構成は任意である。 Then, the cylindrical portion 93 of the copper tube 90 is inserted into the through hole 23 of the cap member 20, and the tip of the projection 94 of the copper tube 90 is brought into contact with the roughened portion 25 of the cap member 20. In this state, a voltage is applied to the copper tube 90 and the cap member 20. As a result, a current flows to the copper tube 90 and the cap member 20 through the tip of the projection 94 of the copper tube 90 and the roughened portion 25 of the cap member 20, and the heat generated by the current causes the tip of the projection 94 of the copper tube 90 and the cap. The roughened portion 25 of the member 20 is melted and joined to each other by welding (that is, resistance welding). As described above, the configuration of the connecting member is arbitrary as long as it does not contradict the object of the present invention.

また、第１の実施形態では、流体関連機能装置としての圧力感応装置の一例として、圧力スイッチについて説明したが、例えば、圧力センサにおいても継手１０とキャップ部材２０を備えた同様な構造であり、本発明を圧力感応装置である圧力センサに適用することもできる。 In the first embodiment, the pressure switch has been described as an example of the pressure-sensitive device as the fluid-related functional device. For example, the pressure sensor has a similar structure including the joint 10 and the cap member 20, The present invention can also be applied to a pressure sensor that is a pressure sensitive device.

なお、前述した実施形態は本発明の代表的な形態を示したに過ぎず、本発明は、実施形態に限定されるものではない。即ち、当業者は、従来公知の知見に従い、本発明の骨子を逸脱しない範囲で種々変形して実施することができる。かかる変形によってもなお本発明の流体関連機能装置の製造方法の構成を具備する限り、勿論、本発明の範疇に含まれるものである。 In addition, embodiment mentioned above only showed the typical form of this invention, and this invention is not limited to embodiment. That is, those skilled in the art can implement various modifications in accordance with conventionally known knowledge without departing from the scope of the present invention. Of course, such modifications are included in the scope of the present invention as long as the configuration of the manufacturing method of the fluid-related functional device of the present invention is provided.

１圧力スイッチ（圧力感応装置、流体関連機能装置）
２弁装置（流体関連機能装置）
１０継手（接続部材）
１０Ａ継手の内孔
１１継手本体部
１２壁部
１３円筒部
１４プロジェクション
２０キャップ部材（ケース部品）
２１ａ外側面（ケース部品の外側面）
２１ｂ内側面（ケース部品の内側面）
２３貫通孔
２４圧力室（ケース部品の内側面側の空間）
２５、２５Ａ、２５Ｂ、２５Ｃ粗面化部
２６、２６Ａ複数の溝
３０円板
４０ストッパ
５０スイッチ部
６０外カバー
６１ハウジング
７０ハウジング（接続部材）
７０Ａハウジングの内孔
７１ハウジング本体部
７３円筒部
７４プロジェクション
７５弁室
８０ケース
８１ケース部品
８１ａケース部品の外側面
８１ｂケース部品の内側面
８２ケース本体
８３貫通孔
８４内側空間（ケース部品の内側面側の空間）
８５粗面化部
９０銅管（接続部材）
９１銅管本体
９２フランジ部
９３円筒部
９４プロジェクション
Ｓ接合箇所 1 Pressure switch (pressure-sensitive device, fluid-related functional device)
2 Valve device (fluid-related functional device)
10 Fitting (connection member)
DESCRIPTION OF SYMBOLS 10A Inner hole of a joint 11 Joint main-body part 12 Wall part 13 Cylindrical part 14 Projection 20 Cap member (case part)
21a Outer side (outer side of case parts)
21b Inner surface (inner surface of case parts)
23 Through hole 24 Pressure chamber (space on the inner side of the case part)
25, 25A, 25B, 25C Roughening portion 26, 26A Multiple grooves 30 Disc 40 Stopper 50 Switch portion 60 Outer cover 61 Housing 70 Housing (connection member)
70A Housing inner hole 71 Housing body 73 Cylindrical section 74 Projection 75 Valve chamber 80 Case 81 Case part 81a Case part outer surface 81b Case part inner side 82 Case body 83 Through hole 84 Inner space (inner side of case part) Space)
85 Roughened part 90 Copper pipe (connecting member)
91 Copper tube main body 92 Flange part 93 Cylindrical part 94 Projection S Joint location

Claims

A metal connecting member formed with an inner hole to which a pipe through which a fluid flows is connected, and the outer surface that joins the connecting member to the outer surface and communicates the inner hole of the connecting member with the space on the inner surface side. And a stainless steel or aluminum case part formed with a through-hole penetrating the inner surface, and a method for producing a fluid-related functional device having a function related to fluid,
A surface treatment step of performing a surface treatment so that the state of the whole joint portion is uniform by irradiating a laser to a joint portion with the annular connection member surrounding the through hole on the outer surface of the case component;
Welding that joins the connection member by resistance welding over the entire circumference of the joint where the surface treatment is performed in the surface treatment step in a state where the inner hole of the connection member communicates with the through hole of the case member. Process,
The manufacturing method of the fluid related functional apparatus characterized by the above-mentioned.

2. The method of manufacturing a fluid-related functional device according to claim 1, wherein, in the surface treatment step, the laser is scanned and irradiated a plurality of times so as to form a plurality of grooves in the entire joining portion.

3. The method for manufacturing a fluid-related functional device according to claim 2, wherein, in the surface treatment step, a laser is irradiated so as to form a plurality of linear grooves parallel to each other in the entire joint portion.

3. The method for manufacturing a fluid-related functional device according to claim 2, wherein in the surface treatment step, a laser is irradiated so as to form a plurality of concentric grooves that are annular and do not intersect with each other throughout the joint portion. .

In the surface treatment step, a plurality of linear first grooves that are parallel to each other and a plurality of linear second grooves that are parallel to each other in a direction intersecting the first plurality of grooves are formed on the entire joining portion. The method of manufacturing a fluid-related functional device according to claim 2, wherein a laser is irradiated so as to form

The method for manufacturing a fluid-related functional device according to claim 1, wherein, in the surface treatment step, a laser is irradiated on the entire surface of the joining portion.