JP2009174690A - Valve body structure for valve device and its manufacturing method - Google Patents

Valve body structure for valve device and its manufacturing method Download PDF

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JP2009174690A
JP2009174690A JP2008016664A JP2008016664A JP2009174690A JP 2009174690 A JP2009174690 A JP 2009174690A JP 2008016664 A JP2008016664 A JP 2008016664A JP 2008016664 A JP2008016664 A JP 2008016664A JP 2009174690 A JP2009174690 A JP 2009174690A
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valve body
valve
resin
body structure
resin layer
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Kenichi Mochizuki
健一 望月
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Fujikoki Corp
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Fujikoki Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a valve body structure for a valve device and its manufacturing method, capable of integrating an inner machine part which is a metallic part and a resin valve body by a simple and inexpensive process, by using ultrasonic welding of mutual resins. <P>SOLUTION: A valve seat member 5 is constituted by forming a resin layer 31 in advance by insert molding on the outside of a metallic annular valve seat 30 for providing an annular valve seat 5a. The resin layer 31 is desirably made of the same resin as the valve body 2. While applying ultrasonic vibration generated by an ultrasonic hone to the valve seat 30, the valve seat member 5 is pushed in a pipe connecting part 3 of the valve body 2, so that a resin part dimensionally overlapping with the resin layer 31 and the valve body 2 is melted by frictional heat and is integrated in cooling. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

この発明は、金属部品と樹脂部品とを結合させてなる複合部品としての弁装置用の弁本体構造、及びその製造方法に関する。   The present invention relates to a valve body structure for a valve device as a composite part formed by joining a metal part and a resin part, and a method for manufacturing the same.

従来、部品同士を一体化する結合として、金属部品同士の結合の場合には、一方の部品を他方の部品内に圧入する手法がよく用いられている。金属部品と樹脂部品との一体的な結合の場合には、型の中に金属を置いて周囲に樹脂を流し込み樹脂が硬化したときに金属部品が樹脂と一体化されるインサート成形という手法が用いられている。   Conventionally, in the case of joining metal parts as a joining for integrating parts, a technique of press-fitting one part into the other part is often used. In the case of an integral connection between a metal part and a resin part, an insert molding method is used in which the metal part is integrated with the resin when the resin is cured by placing the metal in a mold and pouring the resin around it. It has been.

内包する部品を組み付けた後からインサートするという手法がある。この手法では、樹脂部品の内径に対して金属部品の外形を大きくしておき、金属部品に振動を与えて、金属部品が径の重なった部分の樹脂を溶かしながら金属部品を樹脂部品内に入れて結合する。この手法も、広義のインサート成形と称されている。この手法には、溶けた樹脂をどこかに収容しなくてはならないとう難点が存在する。また、この手法では位置精度を治工具に頼らなければならない、という問題がある。こうした製造手法を、例えば弁の製造に適用した場合、溶融した樹脂がバリとして周囲に飛び出る現象が生じ、弁漏れや、シール不良の原因になることがある。また、位置精度（横方向）を得にくいという問題もある。   There is a technique of inserting after assembling the parts to be included. In this method, the outer shape of the metal part is made larger than the inner diameter of the resin part, the metal part is vibrated, and the metal part is placed in the resin part while melting the resin where the diameter overlaps. And combine. This technique is also called insert molding in a broad sense. This approach has the disadvantage that the molten resin must be contained somewhere. In addition, this method has a problem that the position accuracy must be relied on a jig. When such a manufacturing method is applied to, for example, the manufacture of a valve, a phenomenon in which molten resin jumps out as a burr occurs, which may cause valve leakage or a seal failure. There is also a problem that it is difficult to obtain positional accuracy (lateral direction).

温度式膨張弁として、弁本体と、オリフィス、弁体及び該弁体を作動させる作動棒からなる絞り機構と、蒸発器から圧縮機に向かって送り出される冷媒の温度に応じて絞り機構を制御する制御機構とを備えており、金属部材にて形成されたオリフィスを樹脂で形成されている弁本体にインサート成形によって固定したものが提案されている（特許文献１参照）。
また、金属製の弁座部材に弁孔を画定し且つ外周面に雄ねじを形成された円筒部を設け、円筒部を合成樹脂製のハウジング本体に形成された弁孔下穴にねじ込むことにより、ハウジング本体の成形型構造を複雑にすることなく、弁座部材を成形完了後のハウジング本体に配置位置をインサート成形による場合よりも高精度に固定することを図った温度膨張弁が提案されている（特許文献２参照）。
特開平０９−０８９１５４号公報 特開平１１−３２５３０８号公報 As a temperature-type expansion valve, the throttle mechanism is controlled in accordance with the temperature of the valve body, the orifice, the valve body, and the operating rod for operating the valve body, and the refrigerant sent from the evaporator toward the compressor. There is proposed a control mechanism, in which an orifice formed of a metal member is fixed to a valve body formed of resin by insert molding (see Patent Document 1).
Further, by defining a valve hole in the metal valve seat member and providing a cylindrical part formed with a male screw on the outer peripheral surface, and screwing the cylindrical part into a valve hole pilot hole formed in the housing body made of synthetic resin, There has been proposed a temperature expansion valve that is intended to fix the position of the valve seat member to the housing body after the molding is completed with higher precision than in the case of insert molding without complicating the molding structure of the housing body. (See Patent Document 2).
JP 09-089154 A JP 11-325308 A

例えば、流量制御弁のように弁体が接離する弁シート（弁座）を持つ弁については、弁シートを樹脂製シートとした場合、扱う流体によってはエロージョン、コロージョンを受け易くなり、また樹脂製であると軟らかいために、弁体が繰り返して接離することに起因して摩耗をする。したがって、弁シートについては金属製とすることが求められる。また、弁体を駆動する手段として送りねじ機構が用いられるが、ねじ部品を樹脂にすると、摩耗することに起因して動作不良や流量の制御性が悪化するおそれがあるので、金属製とすることが望まれている。金属ねじを先に金型に入れて樹脂成形すると、弁棒やコイルのような内機部品の外径がねじ部内径よりも大きい場合には、ねじ移動機構を構成する雄ねじやばね等の部品を後から組み込むことが困難になる。   For example, for a valve with a valve seat (valve seat) that contacts and separates, such as a flow control valve, if the valve seat is made of resin, depending on the fluid to be handled, it tends to be subject to erosion and corrosion. Since it is soft when made, it wears due to repeated contact and separation of the valve body. Therefore, the valve seat is required to be made of metal. In addition, a feed screw mechanism is used as a means for driving the valve body. However, if the screw part is made of resin, it may be worn out, resulting in deterioration of operation and controllability of the flow rate due to wear. It is hoped that. When a metal screw is first placed in a mold and molded with resin, if the outer diameter of the internal parts such as a valve stem or coil is larger than the inner diameter of the threaded part, the parts such as male screws and springs that make up the screw moving mechanism It becomes difficult to incorporate later.

そこで、弁装置用の弁本体構造とその製造において、金属部品である内機部品と樹脂部品である弁本体とを結合させて、一体化した複合部品としての弁装置用の弁本体構造を得るために、内機部品と弁本体とを直接に一体化させるのではなく、樹脂同士の超音波溶着を利用することができる手法を案出する点で解決すべき課題がある。   Therefore, in the valve body structure for the valve device and the manufacture thereof, the valve body structure for the valve device as an integrated composite part is obtained by combining the internal part that is a metal part and the valve body that is a resin part. Therefore, there is a problem to be solved in terms of devising a technique that can utilize ultrasonic welding between resins, instead of directly integrating the internal parts and the valve body.

この発明の目的は、樹脂同士の超音波溶着を利用することで、簡単で且つ安価な工程で金属部品である内機部品と樹脂部品である弁本体とを一体化させることができる弁装置用の弁本体構造及びその製造方法を提供することである。   An object of the present invention is for a valve device that can integrate an internal machine component, which is a metal component, and a valve body, which is a resin component, with a simple and inexpensive process by utilizing ultrasonic welding between resins. It is providing the valve main body structure and its manufacturing method.

上記の課題を解決するため、この発明による弁装置用の弁本体構造の製造方法は、前記内機部品の前記弁本体との結合予定部位に予め樹脂層を形成し、前記樹脂層と前記弁本体とを超音波溶着によって結合することを特徴としている。   In order to solve the above-described problems, a method for manufacturing a valve body structure for a valve device according to the present invention includes forming a resin layer in advance at a site where the internal machine component is to be joined to the valve body, and the resin layer and the valve It is characterized in that the main body is joined by ultrasonic welding.

また、この発明による弁装置用の弁本体構造は、前記内機部品と前記弁本体とを、前記内機部品に形成されている樹脂層が前記弁本体に超音波溶着することで結合されていることを特徴としている。   In the valve body structure for a valve device according to the present invention, the inner machine part and the valve body are joined by ultrasonic welding of a resin layer formed on the inner machine part to the valve body. It is characterized by being.

この弁装置用の弁本体構造とその製造方法によれば、金属部品である内機部品にインサート成形等の手法によって予め樹脂層を成形しておく。そうして製作された樹脂層を持つ内機部品を樹脂部品である弁本体に対して、従来の樹脂と樹脂との結合方法である超音波溶着をそのまま利用して樹脂部品と樹脂層とを結合することにより、弁本体と内機部品とが結合される。   According to the valve main body structure for the valve device and the manufacturing method thereof, the resin layer is formed in advance on the inner machine part, which is a metal part, by a technique such as insert molding. The inner part with the resin layer thus manufactured is attached to the valve body, which is a resin part, using the ultrasonic welding, which is a conventional resin-to-resin bonding method, as it is. By coupling, the valve body and the internal parts are coupled.

この発明による弁装置用の弁本体構造及びその製造方法は、上記のように構成されているので、樹脂同士に対して施し得る従来の超音波溶着の技術をそのまま利用して、金属部品である内機部品に設けられた樹脂層と樹脂部品である弁本体とを溶着して一体化することができ、その結果、内機部品を弁本体に対して結合した弁装置用の弁本体構造を得ることができる。製造方法としては、そのような弁本体構造を樹脂同士の溶着という簡単な工程で且つ低コストで製造することができる。   Since the valve body structure for a valve device and the manufacturing method thereof according to the present invention are configured as described above, the conventional ultrasonic welding technique that can be applied to resins is used as it is, and is a metal part. It is possible to weld and integrate the resin layer provided on the internal machine parts and the valve body which is a resin part. As a result, the valve body structure for the valve device in which the internal machine parts are coupled to the valve body is obtained. Obtainable. As a manufacturing method, such a valve body structure can be manufactured at a low cost by a simple process of welding resins together.

以下、添付した図面に基づいて、この発明による弁装置用の弁本体構造及びその製造方法の実施例を説明する。図１は、本発明による弁本体構造が適用されている流量調整弁の一例を示す縦断面図である。   Hereinafter, embodiments of a valve body structure for a valve device and a manufacturing method thereof according to the present invention will be described with reference to the accompanying drawings. FIG. 1 is a longitudinal sectional view showing an example of a flow regulating valve to which a valve body structure according to the present invention is applied.

図１に示す流量調整弁１は、暖房機器等の温水の配管系統の途中に介在されて流量調整を行う温水弁であって、駆動軸８等を含む駆動機構を収容するホルダ部２ｂを備える弁本体２と、弁本体２に互いに略略直角をなすように備えられる配管接続部３，４と、弁本体２の上部のフランジ１１を介して載置固定されたパルスモータ等の電動機１４とを備えている。なお、流量調整弁１は、フランジ１１においてリベット１３等を用いることで上面視矩形状の取付け部１２に対して固定される。   A flow rate adjustment valve 1 shown in FIG. 1 is a hot water valve that is interposed in the middle of a hot water piping system such as a heating device and performs flow rate adjustment, and includes a holder portion 2b that houses a drive mechanism including a drive shaft 8 and the like. The valve body 2, pipe connection parts 3, 4 provided so as to be substantially perpendicular to the valve body 2, and an electric motor 14 such as a pulse motor mounted and fixed via a flange 11 at the top of the valve body 2. I have. The flow rate adjusting valve 1 is fixed to the mounting portion 12 having a rectangular shape in a top view by using a rivet 13 or the like in the flange 11.

弁本体２の内部には、配管接続部３の入口側流路３ａと配管接続部４の入口側流路４ａとに連通するように弁室６が形成されている。流量調整弁１は更に、弁本体２内においてその上部開口部に摺動可能に支持されており電動機１４によって駆動される弁棒１５と、弁棒１５の下端部に固定された弁体１９と、弁本体２の配管接続部３側の開口部に固定されており環状の弁座５ａを含む弁座部材５とを備えている。弁室６の上部は、Ｏリング１６及びリング１８によって閉鎖されている。リング１８は樹脂製であって、超音波溶着によって弁本体２に固定されている。   Inside the valve body 2, a valve chamber 6 is formed so as to communicate with the inlet-side flow path 3 a of the pipe connection portion 3 and the inlet-side flow path 4 a of the pipe connection portion 4. The flow regulating valve 1 is further slidably supported in the upper opening of the valve body 2 and is driven by an electric motor 14. A valve body 19 is fixed to the lower end of the valve stem 15. And a valve seat member 5 including an annular valve seat 5a which is fixed to the opening of the valve main body 2 on the pipe connection portion 3 side. The upper portion of the valve chamber 6 is closed by an O-ring 16 and a ring 18. The ring 18 is made of resin and is fixed to the valve body 2 by ultrasonic welding.

弁棒１５の中間部は、Ｏリング１６及びリング１８を介して弁本体２に摺動可能に軸支され、弁棒１５の上端は拡径されて環状突起部１５ａを形成している。弁棒１５の天井部には、凹状部１５ｂが形成され、凹状部１５ｂ内には、剛球体２０を介して駆動軸８の下端部が接触し、駆動軸８の上端部は、電動機１４の回転軸９に係合している。また、駆動軸８には、雄ねじ部８ａが螺設され、弁本体２の上部空間に固定された駆動軸案内部材１０の雌ねじ部１０ａに螺合している。弁棒１５の環状突起部１５ａと、弁本体２の上部空間の底面との間にはコイルばね１７が圧縮状態に装着されており、弁棒１５を常時上方に付勢している。   An intermediate portion of the valve stem 15 is slidably supported on the valve body 2 via an O-ring 16 and a ring 18, and the upper end of the valve stem 15 is expanded in diameter to form an annular protrusion 15a. A concave portion 15 b is formed in the ceiling portion of the valve stem 15, and the lower end portion of the drive shaft 8 is in contact with the concave portion 15 b through the rigid sphere 20, and the upper end portion of the drive shaft 8 is connected to the electric motor 14. The rotating shaft 9 is engaged. The drive shaft 8 is screwed with a male screw portion 8 a and is screwed into a female screw portion 10 a of the drive shaft guide member 10 fixed in the upper space of the valve body 2. A coil spring 17 is mounted in a compressed state between the annular protrusion 15a of the valve stem 15 and the bottom surface of the upper space of the valve body 2, and always biases the valve stem 15 upward.

弁棒１５は、下部に弁体１９を固定する軸端部１５ｃを備え、弁体１９は、ゴム材、フッ素樹脂等の合成樹脂又はＳＵＳ等の金属でリング状に形成されており、弁座５ａに接触したときに弁を閉鎖可能な弁部材１９ａを有する。   The valve stem 15 is provided with a shaft end portion 15c for fixing the valve body 19 at a lower portion. The valve body 19 is formed in a ring shape with a rubber material, a synthetic resin such as a fluororesin, or a metal such as SUS. It has the valve member 19a which can close a valve when it contacts 5a.

次に、上記流量調整弁１の動作について説明する。暖房機器の供給源からの水又は温水等の流体は、入口側通路３ａから供給され、環状の弁座５ａと弁体１９の弁部材１９ａとの間の間隙を通過した後、弁室６を介して出口側流路４ａを通って暖房器等の機器に送出される。この時、パルスモータ等の電動機１４をパルス信号等の回転制御信号に基づいて適宜回動させると、電動機１４の回転軸が回転し、回転軸９と螺合している駆動軸８が回転する。駆動軸８は、その回転によって自身が上下方向に移動し、剛球体２０を介して弁棒１５を上下動させる。弁棒１５は、前記回転制御信号の制御量に比例した量だけ上下方向に移動し、弁座１５ａと弁部材１９ａとの間の間隙幅を調整し、この間隙を流れる流体の流量を調整する。   Next, the operation of the flow rate adjusting valve 1 will be described. Water from the supply source of the heating equipment or fluid such as hot water is supplied from the inlet-side passage 3a, passes through the gap between the annular valve seat 5a and the valve member 19a of the valve body 19, and then passes through the valve chamber 6. Through the outlet side flow path 4a and sent to a device such as a heater. At this time, when the electric motor 14 such as a pulse motor is appropriately rotated based on a rotation control signal such as a pulse signal, the rotating shaft of the electric motor 14 rotates and the drive shaft 8 screwed with the rotating shaft 9 rotates. . The drive shaft 8 itself moves up and down due to its rotation, and moves the valve rod 15 up and down via the rigid sphere 20. The valve stem 15 moves up and down by an amount proportional to the control amount of the rotation control signal, adjusts the gap width between the valve seat 15a and the valve member 19a, and adjusts the flow rate of the fluid flowing through this gap. .

上記の流量制御弁１において、弁本体２とそれに対して固定される弁座部材５、及び弁本体２とそれに対して結合された駆動軸案内部材１０とが、本発明による弁本体構造に該当する。弁座部材５及び駆動軸案内部材１０が流量制御弁１における内機部品である。弁本体２とそれに結合された弁座部材５、或いは弁本体２とそれに結合された駆動軸案内部材１０が、それぞれ金属部品と樹脂部品とを一体化した複合部品として構成されている。   In the flow control valve 1 described above, the valve body 2 and the valve seat member 5 fixed thereto, and the valve body 2 and the drive shaft guide member 10 coupled thereto correspond to the valve body structure according to the present invention. To do. The valve seat member 5 and the drive shaft guide member 10 are internal parts in the flow control valve 1. The valve body 2 and the valve seat member 5 coupled thereto, or the valve body 2 and the drive shaft guide member 10 coupled thereto are configured as composite parts in which metal parts and resin parts are integrated.

図２及び図３は、図１に示した流量制御弁１の金属部品である弁座部材５を樹脂製の弁本体２に結合させる製造方法の一実施形態を説明する図である。図３（ａ）は結合前の状態を示す要部の拡大断面図、図２（ｂ）は結合後の状態を示す拡大断面図である。図２に示すように、弁座部材５は、弁本体２への組立前においては、環状の弁座を提供している金属製の環状の弁シート３０の外側にインサート成形する等して樹脂層３１を予め形成することで構成されている。樹脂層３１は、弁本体２と同じ樹脂製とするのが好ましい。この実施形態では、弁本体２の配管接続部３には、外側に対して内径が拡大する二段の段部３２，３３が形成されており、これに対応して、弁座部材５も弁室６から遠い側の端部の外径が広げられた構造とされている。この二段の段部については、必須の構造ではなく、後述するように、図４に示すような一段の突き当たりを持つ段部に形成してもよい。   2 and 3 are views for explaining an embodiment of a manufacturing method in which a valve seat member 5 which is a metal part of the flow control valve 1 shown in FIG. 1 is coupled to a resin valve body 2. FIG. 3A is an enlarged cross-sectional view of a main part showing a state before joining, and FIG. 2B is an enlarged cross-sectional view showing a state after joining. As shown in FIG. 2, before assembling the valve body 2, the valve seat member 5 is resin-molded by insert molding on the outside of a metal annular valve seat 30 providing an annular valve seat. The layer 31 is formed in advance. The resin layer 31 is preferably made of the same resin as the valve body 2. In this embodiment, the pipe connecting portion 3 of the valve body 2 is formed with two step portions 32 and 33 whose inner diameter is enlarged with respect to the outer side. Correspondingly, the valve seat member 5 is also a valve. The outer diameter of the end portion far from the chamber 6 is widened. The two-stepped portion is not an essential structure and may be formed in a stepped portion having a single-step end as shown in FIG. 4 as will be described later.

弁本体２や樹脂層３１を構成する樹脂材としては、ＰＰＳ（ポリフェニレンサルファイド樹脂）や、ＳＰＳ（シンジオタクチックポリスチレン樹脂）からなる部品とすることができる。また、弁シート３０を構成する金属部品としては、ステンレスや、真鍮にメッキを施したものとすることができる。金属部品に施される樹脂層としては、そうした金属に上記のＰＰＳやＳＰＳ樹脂をコーティングしたものとすることができる。   The resin material constituting the valve body 2 and the resin layer 31 can be a component made of PPS (polyphenylene sulfide resin) or SPS (syndiotactic polystyrene resin). Moreover, as a metal component which comprises the valve seat 30, it can be made by plating stainless steel or brass. As the resin layer applied to the metal part, such a metal can be coated with the above PPS or SPS resin.

図３に示すように、樹脂層３１を被覆した弁シート３０の外側形状については、段差構造による小径部分５ｂにおける樹脂層３１の円筒面状の側面３１ｂの径が、弁本体２における段部３２よりも奥側の弁室６に連なる円筒面状の内周面３２ｂの径に等しく設定されている。また、当該段差構造による大径部分５ｃにおける樹脂層３１の円筒面状の側面３１ｃの径が、弁本体２における段部３２と段差３３との間に形成されている円筒面状の内周面３２ｃの径に等しく設定されている。したがって、当該側面３１ｂ，３１ｃは、内周面３２ｂ，３２ｃと協働して弁本体２に対する弁シート３０のガイド面となっている。弁座部材５を配管接続部３の下に向いた開口端側から挿入して弁本体２に押し込む際には、弁座部材５は押し込み方向に距離を置いた２つの領域における当該ガイド面によってガイドされる。このガイドは、後の超音波溶着の前後においても確保され、弁座部材５の弁本体２に対する径方向の振れが極めて少なくなり、位置決めを正確に行うことができる。   As shown in FIG. 3, regarding the outer shape of the valve seat 30 covered with the resin layer 31, the diameter of the cylindrical surface side surface 31 b of the resin layer 31 in the small diameter portion 5 b due to the step structure is the step portion 32 in the valve body 2. Further, it is set to be equal to the diameter of the cylindrical inner peripheral surface 32 b continuous with the valve chamber 6 on the far side. In addition, the diameter of the cylindrical side surface 31c of the resin layer 31 in the large-diameter portion 5c by the step structure is a cylindrical inner peripheral surface formed between the step portion 32 and the step 33 in the valve body 2. It is set equal to the diameter of 32c. Therefore, the side surfaces 31b and 31c serve as guide surfaces of the valve seat 30 with respect to the valve body 2 in cooperation with the inner peripheral surfaces 32b and 32c. When the valve seat member 5 is inserted into the valve main body 2 from the opening end side facing the pipe connection portion 3 and pushed into the valve body 2, the valve seat member 5 is moved by the guide surfaces in the two regions spaced in the pushing direction. Guided. This guide is ensured before and after the subsequent ultrasonic welding, and the radial deflection of the valve seat member 5 with respect to the valve body 2 is extremely reduced, and positioning can be performed accurately.

弁本体２の段部３２においては、内周面３２ｂと直角に交差して径方向に環状に広がる段差面３２ａと、段差面３２ａから内周面３２ｃに接続するテーパ面３２ｄとが形成されている。一方、弁座部材５において、樹脂層３１は小径部分５ｂと大径部分５ｃとに対して直角に交差した端面３１ａとなっており、テーパ面３２ｄに対応して予め後退した部分は形成されていない。したがって、弁座部材５を弁本体２に対して押し込んで所定の結合位置に置いたとしたときには、樹脂層３１の角部と段部３２の角部とにおいて、重なり部分３１ｅ，３２ｅが生じる。   In the step portion 32 of the valve body 2, a step surface 32a that intersects the inner peripheral surface 32b at a right angle and expands in an annular shape in the radial direction and a tapered surface 32d that connects the step surface 32a to the inner peripheral surface 32c are formed. Yes. On the other hand, in the valve seat member 5, the resin layer 31 is an end surface 31a that intersects the small diameter portion 5b and the large diameter portion 5c at a right angle, and a portion that is previously retracted corresponding to the tapered surface 32d is formed. Absent. Therefore, when the valve seat member 5 is pushed into the valve main body 2 and placed at a predetermined coupling position, overlapping portions 31e and 32e are generated at the corner portions of the resin layer 31 and the step portion 32.

弁座部材５を配管接続部３の開口側から挿入し、ガイド面である側面３１ｂ，３１ｃを弁本体２の内周面３２ｂ，３２ｃに案内させながら押し込むと、樹脂層３１の角部である重なり部分３１ａで段部３２のテーパ面部分３２ｄに突き当たる。超音波ホーンを弁座部材５に（図に示す状態では下方から）当てて、その状態で超音波ホーンで発生された超音波振動を弁シート３０に与えながら、弁座部材５を更に弁本体２内に押し込む。このとき、樹脂層３１と弁本体２との重なり部分３１ｅ，３２ｅが摩擦熱によって溶融し溶け合う。余剰の溶融樹脂は、弁座部材５と弁本体２との間に僅かに形成される隙間に流れる。弁座部材５の配管接続部３内への押し込みは、弁座部材５の端面３１ａが弁本体２の段差面３２ａでの突き当たりによって限界され、その押し込み位置が弁座部材５の配管接続部３内での結合位置とされ、弁座部材５と弁本体２とは樹脂の冷却時に一体化される。このように、側面３１ｂ，３１ｃと内周面３２ｂ，３２ｃとによるガイドと、端面３１ａと段差面３２ａとの突き当たりによって、弁座部材５は弁本体２に対して径方向にも押込み方向にも高い精度で位置決めがなされる。   When the valve seat member 5 is inserted from the opening side of the pipe connecting portion 3 and the side surfaces 31b and 31c, which are guide surfaces, are pushed into the inner peripheral surfaces 32b and 32c of the valve body 2 while being pushed in, the corner portions of the resin layer 31 are formed. It abuts against the tapered surface portion 32d of the stepped portion 32 at the overlapping portion 31a. An ultrasonic horn is applied to the valve seat member 5 (from below in the state shown in the figure), and the ultrasonic vibration generated by the ultrasonic horn in that state is applied to the valve seat 30, while the valve seat member 5 is further moved to the valve body. Push into 2. At this time, overlapping portions 31e and 32e between the resin layer 31 and the valve body 2 are melted and melted by frictional heat. Excess molten resin flows in a gap formed slightly between the valve seat member 5 and the valve body 2. The pushing of the valve seat member 5 into the pipe connecting portion 3 is limited by the contact of the end surface 31a of the valve seat member 5 with the stepped surface 32a of the valve body 2, and the pushing position is the pipe connecting portion 3 of the valve seat member 5. The valve seat member 5 and the valve body 2 are integrated when the resin is cooled. As described above, the valve seat member 5 moves in the radial direction and the pushing direction with respect to the valve body 2 by the guide by the side surfaces 31b and 31c and the inner peripheral surfaces 32b and 32c and the contact between the end surface 31a and the step surface 32a. Positioning is performed with high accuracy.

図４には、図２の弁座部分と同様の部分についてのものであるが本発明による弁本体構造の別の実施形態が示されている。即ち、図２及び図３に示す実施形態では配管接続部３に二段の段部３２，３３が形成されていたが、図４に示す実施形態では、弁本体２には一段の段部３６が形成されており、それに対応して弁座部材３５もストレートな筒状形状に形成されている。弁本体２の内周面の径を弁座部材３５の樹脂層３７の外径と同じにすることで、弁座部材３５は弁本体２（配管接続部３）内への押し込みの際にガイドされる。また、結合を得る構造については、図３に示す構造と同様であるので詳細は省略するが、弁本体２側の段部３６の角部と弁座部材３５の角部とに突き当たりの際に重なる部分が設けられており、弁本体２と弁座部材３５とをその重なり部分における溶着で結合させることができる。   FIG. 4 shows another embodiment of the valve body structure according to the present invention, which is similar to the valve seat portion of FIG. That is, in the embodiment shown in FIGS. 2 and 3, the two-stage steps 32 and 33 are formed in the pipe connection portion 3, but in the embodiment shown in FIG. Correspondingly, the valve seat member 35 is also formed in a straight cylindrical shape. By making the diameter of the inner peripheral surface of the valve body 2 the same as the outer diameter of the resin layer 37 of the valve seat member 35, the valve seat member 35 is guided when being pushed into the valve body 2 (pipe connection portion 3). Is done. The structure for obtaining the coupling is the same as the structure shown in FIG. 3 and will not be described in detail. However, when contacting the corner of the stepped portion 36 and the corner of the valve seat member 35 on the valve body 2 side, An overlapping portion is provided, and the valve body 2 and the valve seat member 35 can be joined by welding at the overlapping portion.

図５及び図６は、図１に示した流量制御弁１の金属部品である駆動軸案内部材１０を樹脂製の弁本体２に結合させる製造方法の別の実施形態を説明する図である。図６（ａ）は結合前の状態を示す要部の拡大断面図、図６（ｂ）は結合後の状態を示す拡大断面図である。図５に示すように、駆動軸案内部材１０は、弁本体２への組立前においては、金属製の雌ねじ体４０に、その外周側にインサート成形する等して樹脂層４１を予め形成して構成されている。樹脂層４１は、弁本体２と同じ樹脂製とするのが好ましい。弁本体２のホルダ部２ｂには、外側に対して内径が拡大する段部４２，４３が形成されている。結合に際して利用されるのは段部４２である。駆動軸案内部材１０を弁本体２に結合の後、雌ねじ体４０に雄ねじ部８ａを有する駆動軸８が螺合される。   5 and 6 are diagrams illustrating another embodiment of a manufacturing method in which the drive shaft guide member 10 that is a metal part of the flow control valve 1 shown in FIG. 1 is coupled to the resin valve body 2. FIG. 6A is an enlarged cross-sectional view of a main part showing a state before joining, and FIG. 6B is an enlarged cross-sectional view showing a state after joining. As shown in FIG. 5, the drive shaft guide member 10 has a resin layer 41 formed in advance on an outer peripheral side of a metal female screw body 40 before assembly to the valve body 2. It is configured. The resin layer 41 is preferably made of the same resin as the valve body 2. The holder part 2b of the valve body 2 is formed with stepped parts 42 and 43 whose inner diameter is enlarged with respect to the outside. It is the step 42 that is used for the coupling. After coupling the drive shaft guide member 10 to the valve body 2, the drive shaft 8 having the male screw portion 8 a is screwed to the female screw body 40.

樹脂層４１が施された雌ねじ体４０の外径寸法は、弁体２の段部４２，４３間の内周面４２ｂの径と同じ大きさに形成されているので、雌ねじ体４０の側面４１ｂは、当該内周面４２ｂと同様に、雌ねじ体４０を弁本体２に押し込むときのガイド面となっている。弁本体２の段部４２における角部には段差面４２ａとテーパ面４２ｄが形成されている。一方、雌ねじ体４０の樹脂層４１はストレートな形状であって、テーパ面４２ｄに対応した予めの逃げが形成されてはいない。そのため、駆動軸案内部材１０をホルダ２ｂの上に向いた開口端側から挿入するとき、樹脂層４１の角部が段部４２の角部に突き当たる。   Since the outer diameter dimension of the female screw body 40 provided with the resin layer 41 is formed to be the same as the diameter of the inner peripheral surface 42b between the step portions 42 and 43 of the valve body 2, the side face 41b of the female screw body 40 is formed. Is a guide surface when the female screw body 40 is pushed into the valve body 2 in the same manner as the inner peripheral surface 42b. A stepped surface 42 a and a tapered surface 42 d are formed at the corners of the stepped portion 42 of the valve body 2. On the other hand, the resin layer 41 of the female screw body 40 has a straight shape and is not formed with a preliminary relief corresponding to the tapered surface 42d. Therefore, when the drive shaft guide member 10 is inserted from the opening end side facing the holder 2 b, the corner of the resin layer 41 abuts against the corner of the step 42.

また、結合を得る手順については、図３又は図４に示す構造と同様である。即ち、弁本体２側の段４２の角部と駆動軸案内部材１０の角部とに突き当たりの際に重なることになる重なり部分４１ｅ，４２ｅが設けられている。超音波ホーンを金属製の雌ねじ体４０に当てて（図に示す状態では上方から）、超音波ホーンで発生された超音波振動を雌ねじ体４０に与えながら、駆動軸案内部材１０を弁本体２のホルダ２ｂ内に押し込むと、樹脂層４１と弁本体２との寸法上重なる重なり部分４１ｅ，４２ｅの樹脂が摩擦熱によって溶融し溶け合う。駆動軸案内部材１０の弁本体２への押し込みは、端面４１ａと段差面４２ａとが突き当たるまで押し込むことによって限界付けられ、その押し込み位置が駆動軸案内部材１０のホルダ２ｂ内での固定位置とされる。溶融樹脂が冷却によって固化するとき、駆動軸案内部材１０は重なり部分４１ｅ，４２ｅにおける溶着で弁本体２に対して結合される。   The procedure for obtaining the bond is the same as the structure shown in FIG. 3 or FIG. That is, there are provided overlapping portions 41e, 42e that overlap each other at the corner of the step 42 on the valve body 2 side and the corner of the drive shaft guide member 10. An ultrasonic horn is applied to the female female screw body 40 (from above in the state shown in the figure), and the ultrasonic shaft generated by the ultrasonic horn is applied to the female screw body 40 while the drive shaft guide member 10 is moved to the valve body 2. When the resin is pushed into the holder 2b, the resin in the overlapping portions 41e and 42e that overlap in dimension between the resin layer 41 and the valve body 2 is melted and melted by frictional heat. The pushing of the drive shaft guide member 10 into the valve body 2 is limited by pushing until the end surface 41a and the stepped surface 42a come into contact with each other, and the push position is set as a fixed position in the holder 2b of the drive shaft guide member 10. The When the molten resin is solidified by cooling, the drive shaft guide member 10 is coupled to the valve body 2 by welding at the overlapping portions 41e and 42e.

このように、側面４１ｂと内周面４２ｂとによるガイドと、端面４１ａと段差面４２ａとの突き当たりによって、駆動軸案内部材１０は弁本体２に対して径方向にも押込み方向にも高い精度で位置決めがなされる。また、金属製の駆動軸案内部材に予め樹脂層を形成しておき、その樹脂層と樹脂製の弁本体とを樹脂の溶融固化による超音波溶着で結合するので、簡単で且つ安価な工程で弁装置用の弁本体構造を得ることができる。   As described above, the drive shaft guide member 10 is highly accurate in both the radial direction and the pushing direction with respect to the valve body 2 by the guide by the side surface 41b and the inner peripheral surface 42b and the contact of the end surface 41a and the stepped surface 42a. Positioning is done. In addition, a resin layer is formed in advance on the metal drive shaft guide member, and the resin layer and the valve body made of resin are joined by ultrasonic welding by melting and solidifying the resin, so that the process is simple and inexpensive. A valve body structure for a valve device can be obtained.

本発明による弁装置用の弁本体構造が適用されている流量調整弁の一例を示す縦断面図である。It is a longitudinal cross-sectional view which shows an example of the flow regulating valve to which the valve main body structure for the valve apparatus by this invention is applied. 図１に示した流量制御弁の金属部品である弁座部材を樹脂製の弁本体に結合させる製造方法の一実施形態を説明する図である。It is a figure explaining one Embodiment of the manufacturing method which couple | bonds the valve seat member which is a metal component of the flow control valve shown in FIG. 1 with the resin-made valve main body. 図２に示す流量制御弁の弁座部材の弁本体への結合前後をそれぞれ示す要部の拡大断面図である。It is an expanded sectional view of the principal part which each shows before and after the coupling | bonding to the valve main body of the valve seat member of the flow control valve shown in FIG. 本発明による弁本体構造の別の実施形態を示す縦断面図である。It is a longitudinal cross-sectional view which shows another embodiment of the valve body structure by this invention. 図１に示されている流量調整弁の金属部品である駆動軸案内部材を樹脂製の弁本体に結合させる製造方法の一実施形態を説明する図である。It is a figure explaining one Embodiment of the manufacturing method which couple | bonds the drive-shaft guide member which is a metal component of the flow regulating valve shown by FIG. 1 with the valve body made from resin. 図５示す流量制御弁の駆動軸案内部材の弁本体への結合前後をそれぞれ示す要部の拡大断面図である。It is an expanded sectional view of the principal part which shows each before and after the coupling | bonding to the valve main body of the drive shaft guide member of the flow control valve shown in FIG.

符号の説明Explanation of symbols

１ 流量制御弁 ２ 弁本体
３，４ 配管接続部
５ 弁座部材 ５ａ 弁座
５ｂ 小径部分 ５ｃ 大径部分
６ 弁室
８ 駆動軸 ８ａ 雄ねじ部
９ 回転軸
１０ 駆動軸案内部材 １０ａ 雌ねじ部
１４ 電動機 １５ 弁棒
１９ 弁体 １９ａ 弁部材
３０ 弁シート ３１ 樹脂層
３１ａ 端面 ３１ｂ，３１ｃ 側面
３１ｅ 重なり部分 ３２，３３ 段部
３２ａ 段差面 ３２ｂ 内周面
３２ｃ 内周面 ３２ｄ テーパ面
３２ｅ 重なり部分
３６ 段部 ３７ 樹脂層
４０ 雌ねじ体 ４１ 樹脂層
４１ｂ 側面 ４２，４３ 段部
４２ａ 段差面４２ａ ４２ｂ 内周面
４２ｄ テーパ面 DESCRIPTION OF SYMBOLS 1 Flow control valve 2 Valve main body 3,4 Piping connection part 5 Valve seat member 5a Valve seat 5b Small diameter part 5c Large diameter part 6 Valve chamber 8 Drive shaft 8a Male thread part 9 Rotating shaft 10 Drive shaft guide member 10a Female thread part 14 Electric motor 15 Valve rod 19 Valve body 19a Valve member 30 Valve seat 31 Resin layer 31a End surface 31b, 31c Side surface 31e Overlapping portion 32,33 Stepped portion 32a Stepped surface 32b Inner circumferential surface 32c Inner circumferential surface 32d Tapered surface 32e Overlapped portion 36 Stepped portion 37 Resin Layer 40 Female thread body 41 Resin layer 41b Side surface 42, 43 Stepped portion 42a Stepped surface 42a 42b Inner peripheral surface 42d Tapered surface

Claims (12)

金属部品である内機部品と樹脂製の弁本体とを結合させてなる弁装置用の弁本体構造において、
前記内機部品と前記弁本体とは、前記内機部品に形成されている樹脂層が前記弁本体に超音波溶着されることで結合されていることを特徴とする弁装置用の弁本体構造。 In the valve body structure for a valve device formed by combining an internal machine part that is a metal part and a resin valve body,
The valve body structure for a valve device, wherein the inner machine component and the valve body are joined by ultrasonic welding of a resin layer formed on the inner machine component to the valve body. . 前記樹脂層と前記弁本体とは同じ樹脂から形成されていることを特徴とする請求項１記載の弁装置用の弁本体構造。   The valve body structure for a valve device according to claim 1, wherein the resin layer and the valve body are formed of the same resin. 前記内機部品と前記弁本体とを結合する前記超音波溶着は、前記弁本体への前記内機部品の押し込み先端部に形成されている前記樹脂層と前記弁本体との間に生じる重なり部分においてされていることを特徴とする請求項１又は２記載の弁装置用の弁本体構造。   The ultrasonic welding that joins the internal machine component and the valve body is an overlapping portion formed between the resin layer and the valve body formed at the leading end of the internal machine component pushed into the valve body. The valve main body structure for a valve device according to claim 1 or 2, wherein 前記内機部品は前記押込み先端部が前記弁本体に突き当たることにより前記弁本体に対して押し込み方向に規制されており、前記超音波溶着が行われている前記内機部品と前記弁本体との前記重なり部分は前記内機部品の前記押し込み先端部の隅部に形成されていることを特徴とする請求項３記載の弁装置用の弁本体構造。   The inner machine component is regulated in the pushing direction with respect to the valve body by the pushing tip portion abutting against the valve body, and the inner machine part and the valve body in which the ultrasonic welding is performed are performed. 4. The valve body structure for a valve device according to claim 3, wherein the overlapping portion is formed at a corner of the pushing tip portion of the internal machine part. 前記内機部品の側面は、前記内機部品の前記弁本体への押し込み方向に対してのガイド面となっていることを特徴とする請求項３又は４記載の弁装置用の弁本体構造。   5. The valve body structure for a valve device according to claim 3, wherein a side surface of the internal machine component is a guide surface with respect to a direction in which the internal machine component is pushed into the valve body. 前記弁装置は流量調整弁であり、前記内機部品は、前記流量調整弁の弁本体内に装着されるとともに流量の制御をするため弁体が接離する相手となる弁シートであることを特徴とする請求項１〜５のいずれか１項記載の弁装置用の弁本体構造。   The valve device is a flow rate adjusting valve, and the internal unit component is a valve seat that is mounted in the valve main body of the flow rate adjusting valve and is a counterpart to which a valve body contacts and separates in order to control the flow rate. The valve main body structure for a valve device according to any one of claims 1 to 5. 前記弁装置は流量調整弁であり、前記内機部品は、前記流量調整弁の弁本体内に装着されるとともに弁体を駆動するための移動ねじとなる雄ねじと螺合する雌ねじであることを特徴とする請求項１〜５のいずれか１項記載の弁装置用の弁本体構造。   The valve device is a flow regulating valve, and the internal component is a female screw that is mounted in a valve main body of the flow regulating valve and that is screwed with a male screw serving as a moving screw for driving the valve body. The valve main body structure for a valve device according to any one of claims 1 to 5. 金属部品である内機部品と樹脂製の弁本体とを結合させてなる弁装置用の弁本体構造の製造方法において、
前記内機部品の前記弁本体との結合予定部位に予め樹脂層を形成し、前記樹脂層と前記弁本体とを超音波溶着によって結合することを特徴とする弁装置用の弁本体構造の製造方法。 In a manufacturing method of a valve body structure for a valve device in which an internal machine part that is a metal part and a resin valve body are combined,
Production of a valve body structure for a valve device, wherein a resin layer is formed in advance at a site where the inner part is to be joined to the valve body, and the resin layer and the valve body are joined by ultrasonic welding. Method. 前記樹脂層と前記弁本体とは同じ樹脂から形成されていることを特徴とする請求項８記載の弁装置用の弁本体構造の製造方法。   9. The method for manufacturing a valve body structure for a valve device according to claim 8, wherein the resin layer and the valve body are made of the same resin. 前記弁本体への前記内機部品の押し込み先端部に形成されている前記樹脂層と前記弁本体との間に生じる重なり部分において前記超音波溶着を行うことにより、前記内機部品と前記弁本体とが結合されることを特徴とする請求項８又は９記載の弁装置用の弁本体構造の製造方法。   By performing the ultrasonic welding at an overlapping portion formed between the resin layer and the valve body formed at the leading end portion of the inner machine part pushed into the valve body, the inner machine part and the valve body The method for manufacturing a valve body structure for a valve device according to claim 8 or 9, wherein 前記内機部品と前記弁本体との前記重なり部分は前記内機部品の押し込み先端部の隅部に形成され、前記内機部品は当該押込み先端部が前記弁本体に突き当たることにより前記弁本体に対して押し込み方向に規制されることを特徴とする請求項１０記載の弁装置用の弁本体構造の製造方法。   The overlapping portion between the inner machine component and the valve body is formed at a corner of the pushing tip of the inner machine component, and the inner machine component is brought into contact with the valve body by the pushing tip against the valve body. The method of manufacturing a valve body structure for a valve device according to claim 10, wherein the valve body structure is restricted in a pushing direction. 前記内機部品は、前記弁本体に対して前記内機部品の側面においてガイドされながら前記弁本体に押し込まれることを特徴とする請求項１０又は１１記載の弁装置用の弁本体構造の製造方法。   The method for manufacturing a valve body structure for a valve device according to claim 10 or 11, wherein the inner machine part is pushed into the valve body while being guided on a side surface of the inner machine part with respect to the valve body. .
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CN102494147A (en) * 2011-11-18 2012-06-13 浙江中控流体技术有限公司 Quick opening and quick closing adjusting valve
KR200463660Y1 (en) 2012-08-20 2012-11-16 주식회사 이엘엔터프라이즈 Closed type cartridge having direct connection of hose
JP2018188191A (en) * 2017-05-01 2018-11-29 株式会社ダイゾー Discharge container
JP2020019570A (en) * 2018-07-18 2020-02-06 株式会社ダイゾー Double pressurized container, discharge product, discharge member, discharge device, and dispenser system using them
WO2021094454A1 (en) * 2019-11-14 2021-05-20 Pierburg Gmbh Control or switching valve for a coolant circuit of a motor vehicle

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* Cited by examiner, † Cited by third party
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CN102494147A (en) * 2011-11-18 2012-06-13 浙江中控流体技术有限公司 Quick opening and quick closing adjusting valve
KR200463660Y1 (en) 2012-08-20 2012-11-16 주식회사 이엘엔터프라이즈 Closed type cartridge having direct connection of hose
JP2018188191A (en) * 2017-05-01 2018-11-29 株式会社ダイゾー Discharge container
JP2020019570A (en) * 2018-07-18 2020-02-06 株式会社ダイゾー Double pressurized container, discharge product, discharge member, discharge device, and dispenser system using them
WO2021094454A1 (en) * 2019-11-14 2021-05-20 Pierburg Gmbh Control or switching valve for a coolant circuit of a motor vehicle

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