JP4561583B2 - Manufacturing method of solenoid valve - Google Patents

Manufacturing method of solenoid valve Download PDF

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JP4561583B2
JP4561583B2 JP2005300326A JP2005300326A JP4561583B2 JP 4561583 B2 JP4561583 B2 JP 4561583B2 JP 2005300326 A JP2005300326 A JP 2005300326A JP 2005300326 A JP2005300326 A JP 2005300326A JP 4561583 B2 JP4561583 B2 JP 4561583B2
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terminal
lead
coil
cylindrical
electromagnetic coil
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JP2007107652A (en
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真治 阿保
利昭 大原
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Denso Corp
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Denso Corp
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Priority to GB0620364A priority patent/GB2431297B/en
Priority to DE102006035347A priority patent/DE102006035347B4/en
Publication of JP2007107652A publication Critical patent/JP2007107652A/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/16—Rectilinearly-movable armatures
    • H01F7/1638—Armatures not entering the winding
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/005—Arrangement of electrical wires and connections, e.g. wire harness, sockets, plugs; Arrangement of electronic control circuits in or on fuel injection apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
    • F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
    • F02M61/188—Spherical or partly spherical shaped valve member ends
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F5/00—Coils
    • H01F5/04—Arrangements of electric connections to coils, e.g. leads
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M47/00—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
    • F02M47/02—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves and having means for periodically releasing that closing pressure
    • F02M47/027—Electrically actuated valves draining the chamber to release the closing pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0012—Valves
    • F02M63/0014—Valves characterised by the valve actuating means
    • F02M63/0015—Valves characterised by the valve actuating means electrical, e.g. using solenoid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0012—Valves
    • F02M63/0031—Valves characterized by the type of valves, e.g. special valve member details, valve seat details, valve housing details
    • F02M63/004—Sliding valves, e.g. spool valves, i.e. whereby the closing member has a sliding movement along a seat for opening and closing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0012—Valves
    • F02M63/0031—Valves characterized by the type of valves, e.g. special valve member details, valve seat details, valve housing details
    • F02M63/0043—Two-way valves

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Magnetically Actuated Valves (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Electromagnets (AREA)

Description

本発明は、燃料噴射弁に用いて好適な電磁弁の製造方法に関する。 The present invention relates to a method for producing a suitable electrostatic solenoid valve used in the fuel injection valve.

従来、燃料の噴射時期及び噴射量を電磁弁によって制御する燃料噴射弁が知られている（特許文献１参照）。この燃料噴射弁に用いられる電磁弁は、例えば、図３に示す様に、電磁コイル１００への通電により電磁石を形成するソレノイドと、電磁コイル１００に通電するためのターミナル１１０を保持するコネクタ１２０と、このコネクタ１２０の台座を形成するハウジング１３０と、このハウジング１３０に形成される貫通孔にＯリング１４０を介して挿通され、ターミナル１１０と電磁コイル１００とを電気的に接続する棒状のリード端子１５０等を有している。このリード端子１５０は、一端側に電磁コイル１００の端部がヒュージングにより接合され、他端側がターミナル１１０に溶接されている。
特開２００１−１０２１２４号公報 2. Description of the Related Art Conventionally, a fuel injection valve that controls the fuel injection timing and the injection amount by an electromagnetic valve is known (see Patent Document 1). For example, as shown in FIG. 3, the electromagnetic valve used for this fuel injection valve includes a solenoid that forms an electromagnet by energizing the electromagnetic coil 100, and a connector 120 that holds a terminal 110 for energizing the electromagnetic coil 100. The housing 130 that forms the base of the connector 120, and the rod-shaped lead terminal 150 that is inserted through the through-hole formed in the housing 130 via the O-ring 140 and electrically connects the terminal 110 and the electromagnetic coil 100. Etc. In the lead terminal 150, one end side of the electromagnetic coil 100 is joined by fusing, and the other end side is welded to the terminal 110.
JP 2001-102124 A

ところで、棒状のリード端子１５０にヒュージングを実施するためには、以下の（１）または（２）等の方法が必要である。
（１）棒状の金属素材の一部をプレスで潰して平板形状に加工した後、所望の形状にプレス抜きし、更に曲げ工程を経てヒュージング形状を作る。
（２）電磁コイル１００を別部品で覆い、ヒュージングする。
上記（１）の方法では、ヒュージング形状を作るための工数が多く、加工コストが高くなる。また、上記（２）の方法では、ヒュージングコスト以外に別部品の費用を要する。いずれにしても、製品コストの上昇を招くという問題があった。 By the way, in order to perform fusing on the rod-shaped lead terminal 150, the following method (1) or (2) is necessary.
(1) A part of a rod-shaped metal material is crushed by a press and processed into a flat plate shape, and then pressed into a desired shape, and a fusing shape is formed through a bending process.
(2) Cover the electromagnetic coil 100 with another component and perform fusing.
In the method (1), the number of man-hours for creating the fusing shape is large, and the processing cost is high. In the method (2), the cost of separate parts is required in addition to the fusing cost. In any case, there is a problem that the product cost increases.

そこで、リード端子１５０と電磁コイル１００とを溶接することが考えられる。しかし、従来のリード端子１５０に溶接を実施するためには、棒状のリード端子１５０に対して電磁コイル１００の接合位置を安定させる必要がある。
本発明は、上記事情に基づいて成されたもので、その目的は、電磁コイルとターミナルとを電気的に接続するリード端子を備えた電磁弁を得るに当たり、リード端子と電磁コイルとの接続を溶接によって確実に実施できる製造技術を提供することにある。 Therefore, it is conceivable to weld the lead terminal 150 and the electromagnetic coil 100. However, in order to perform welding on the conventional lead terminal 150, it is necessary to stabilize the joining position of the electromagnetic coil 100 with respect to the rod-like lead terminal 150.
The present invention has been made based on the above circumstances, and its purpose is to connect the lead terminal and the electromagnetic coil in obtaining an electromagnetic valve having a lead terminal for electrically connecting the electromagnetic coil and the terminal. An object of the present invention is to provide a manufacturing technique that can be reliably implemented by welding.

（請求項１の発明）
本発明は、ボビンに巻線された電磁コイルを有し、この電磁コイルへの通電により電磁石を形成するソレノイドと、台座であるハウジングに取り付けられ、電磁コイルに通電するためのターミナルを有するコネクタと、ハウジングに形成される貫通孔にシール部材を介して挿通され、ターミナルと電磁コイルとを電気的に接続するリード端子とを備える電磁弁の製造方法であって、リード端子における一端側の端部と他端側の端部とにそれぞれ円柱形状のコイル側リード部とターミナル側リード部とを設けると共に、両リード部の間に両リード部より外径が大きい円柱部を設けることにより、少なくともコイル側リード部と円柱部との間に段差を形成することを基本としている。 (Invention of Claim 1 )
The present invention has an electromagnetic coil wound around a bobbin, a solenoid that forms an electromagnet by energizing the electromagnetic coil, and a connector that is attached to a housing that is a base and has a terminal for energizing the electromagnetic coil. An electromagnetic valve manufacturing method comprising a lead terminal that is inserted into a through hole formed in a housing through a seal member and electrically connects the terminal and the electromagnetic coil, and is an end on one end side of the lead terminal By providing a cylindrical coil-side lead portion and a terminal-side lead portion respectively at the end portion on the other end side and a terminal-side lead portion, and providing a cylindrical portion having an outer diameter larger than both lead portions between the two lead portions, at least the coil Basically , a step is formed between the side lead portion and the cylindrical portion .

特に、上記段差を形成するに当たり、円柱部と同一径を有する棒状の金属素材を準備し、この金属素材の一端側と他端側の外径を切削により縮径して、コイル側リード部とターミナル側リード部とを形成した後、コイル側リード部とターミナル側リード部との間に残された円柱部を径方向にプレスで押し潰して、円柱部の側面に略平面部を形成し、ボビンから引き出された電磁コイルをコイル側リード部に巻き付け、更に段差を乗り越えて円柱部の側面まで導いてから、円柱部の略平面部に溶接することを特徴とする。 In particular, in forming the step, a rod-shaped metal material having the same diameter as the cylindrical portion is prepared, and the outer diameter of one end side and the other end side of the metal material is reduced by cutting, and the coil-side lead portion and After forming the terminal-side lead portion, the cylindrical portion remaining between the coil-side lead portion and the terminal-side lead portion is crushed by a press in the radial direction to form a substantially flat portion on the side surface of the cylindrical portion , The electromagnetic coil pulled out from the bobbin is wound around the coil-side lead part, and further guided over the step to the side surface of the cylindrical part, and then welded to the substantially flat part of the cylindrical part .

（請求項２の発明）
請求項１に記載した電磁弁の製造方法とは、リード端子における両リード部、円柱部及び少なくともコイル側リード部と円柱部との間に設ける段差の形成方法が異なるものであって、コイル側リード部及びターミナル側リード部と同一径を有する棒状の金属素材と、円柱部と同一径を有し、且つ棒状の金属素材の外径と略等しい内径を有する環状の金属素材とを準備し、棒状の金属素材の外周に環状の金属素材を所定の位置まで圧入して組み付けた後、環状の金属素材によって形成される円柱部を径方向にプレスで押し潰して、円柱部の側面に略平面部を形成することを特徴とする。 (Invention of Claim 2 )
The method for manufacturing a solenoid valve according to claim 1 is different from a method for forming both lead portions, a cylindrical portion and a step provided between at least a coil side lead portion and a cylindrical portion in a lead terminal, Preparing a rod-shaped metal material having the same diameter as the lead portion and the terminal-side lead portion, and an annular metal material having the same diameter as the cylindrical portion and an inner diameter substantially equal to the outer diameter of the rod-shaped metal material; After pressing and assembling a ring-shaped metal material to a predetermined position on the outer periphery of the rod-shaped metal material, the cylindrical part formed by the ring-shaped metal material is crushed with a press in the radial direction, and is substantially flat on the side surface of the columnar part. Forming a portion.

本発明を実施するための最良の形態を以下の実施例により詳細に説明する。   The best mode for carrying out the present invention will be described in detail by the following examples.

図１は実施例１に係る電磁弁１の断面図である。
本実施例の電磁弁１は、例えば、コモンレール式燃料噴射システムの燃料噴射弁（図示せず）に用いられ、内燃機関（例えばディーゼル機関）に噴射する燃料の噴射時期及び噴射量を制御する。
燃料噴射弁は、噴孔を開閉するニードルと、このニードルの背圧（ニードルを閉弁方向に付勢する油圧）を蓄える圧力室と、この圧力室の油圧を低圧側に開放するための圧力開放通路２（図１参照）と、この圧力開放通路２と圧力室との間を開閉する本発明の電磁弁１等より構成される。なお、電磁弁１を除く燃料噴射弁の構造は周知であり、詳細な説明を省略する。 FIG. 1 is a cross-sectional view of a solenoid valve 1 according to the first embodiment.
The electromagnetic valve 1 of the present embodiment is used, for example, in a fuel injection valve (not shown) of a common rail fuel injection system, and controls the injection timing and the injection amount of fuel injected into an internal combustion engine (for example, a diesel engine).
The fuel injection valve includes a needle that opens and closes the nozzle hole, a pressure chamber that stores back pressure of the needle (hydraulic pressure that urges the needle in the valve closing direction), and a pressure that opens the hydraulic pressure of the pressure chamber to the low pressure side. It comprises an open passage 2 (see FIG. 1) and an electromagnetic valve 1 of the present invention that opens and closes between the pressure release passage 2 and the pressure chamber. The structure of the fuel injection valve excluding the electromagnetic valve 1 is well known and will not be described in detail.

電磁弁１は、以下に説明するソレノイド、オリフィスプレート３、コネクタ４、ハウジング５、ケース６等により構成され、インジェクタボディ７にナット８を締め付け固定されている。
ソレノイドは、電磁コイル９、ステータ１０、アーマチャ１１、及びバルブボディ１２等より構成される。
電磁コイル９は、樹脂製のボビン１３に巻線されてステータ１０の内部に挿入され、樹脂モールドされている。 The solenoid valve 1 includes a solenoid, an orifice plate 3, a connector 4, a housing 5, a case 6, and the like described below, and a nut 8 is fastened and fixed to the injector body 7.
The solenoid includes an electromagnetic coil 9, a stator 10, an armature 11, a valve body 12, and the like.
The electromagnetic coil 9 is wound around a resin bobbin 13, inserted into the stator 10, and resin molded.

ステータ１０は、例えば、鉄等の強磁性体によって形成され、電磁コイル９への通電により磁化されて電磁石を形成する。このステータ１０には、径方向中央部を図示上下方向に貫通する中心孔１４が形成され、この中心孔１４が圧力開放通路２に通じている。
アーマチャ１１は、ステータ１０とバルブボディ１２との間に形成されるバルブ室１５に配置され、ステータ１０の中心孔１４に配設されるスプリング１６の圧縮荷重を受けて図示下方へ付勢されている。このアーマチャ１１には、径方向中央部に反ステータ側（図示下側）へ突き出るシャフト部１７が一体に設けられ、このシャフト部１７がバルブボディ１２に摺動自在に保持されている。また、シャフト部１７の先端には、圧力室に通じる出口オリフィス１８を開閉するボール弁１９が保持されている。 The stator 10 is formed of, for example, a ferromagnetic material such as iron, and is magnetized by energizing the electromagnetic coil 9 to form an electromagnet. The stator 10 is formed with a center hole 14 penetrating the central portion in the radial direction in the vertical direction in the figure, and the center hole 14 communicates with the pressure release passage 2.
The armature 11 is disposed in a valve chamber 15 formed between the stator 10 and the valve body 12, and is biased downward in the figure by receiving a compression load of a spring 16 disposed in the center hole 14 of the stator 10. Yes. The armature 11 is integrally provided with a shaft portion 17 projecting toward the counter-stator side (the lower side in the drawing) at the radial center, and the shaft portion 17 is slidably held by the valve body 12. A ball valve 19 that opens and closes an outlet orifice 18 that communicates with the pressure chamber is held at the tip of the shaft portion 17.

バルブボディ１２は、インジェクタボディ７の上端部に設けられた円筒壁部７ａの内側でオリフィスプレート３の図示上側に配置され、円筒壁部７ａに螺子結合して固定される。このバルブボディ１２には、バルブ室１５に連通する縦孔２０と、この縦孔２０に接続される連通路２１とが設けられ、この連通路２１と出口オリフィス１８との間がボール弁１９によって断続される。
オリフィスプレート３には、上記の圧力室と、この圧力室に高圧燃料を導く入口オリフィス（図示せず）、及び出口オリフィス１８が形成されている。 The valve body 12 is disposed on the upper side of the orifice plate 3 inside the cylindrical wall portion 7a provided at the upper end portion of the injector body 7, and is fixed to the cylindrical wall portion 7a by screwing. The valve body 12 is provided with a vertical hole 20 communicating with the valve chamber 15 and a communication passage 21 connected to the vertical hole 20, and a ball valve 19 is provided between the communication passage 21 and the outlet orifice 18. Intermittently.
The orifice plate 3 is formed with the pressure chamber, an inlet orifice (not shown) for introducing high-pressure fuel into the pressure chamber, and an outlet orifice 18.

コネクタ４は、台座であるハウジング５をインサート品として樹脂成形され、後述するリード端子２２（図２参照）を介して電磁コイル９に接続されるターミナル２３を保持している。
ハウジング５は、鉄あるいはステンレス等の金属製であり、ステータ１０の反アーマチャ側に配置され、ケース６に固定されている。このハウジング５には、上記の圧力開放通路２と、リード端子２２を取り出すための貫通孔２４が形成されている。 The connector 4 is resin-molded with the housing 5 serving as a base as an insert, and holds a terminal 23 connected to the electromagnetic coil 9 via a lead terminal 22 (see FIG. 2) described later.
The housing 5 is made of metal such as iron or stainless steel, is disposed on the side opposite to the armature of the stator 10, and is fixed to the case 6. In the housing 5, the pressure release passage 2 and a through hole 24 for taking out the lead terminal 22 are formed.

ケース６は、ハウジング５と同じく、鉄あるいはステンレス等の金属製であり、ステータ１０の周囲を囲う筒状に設けられている。このケース６は、図示下側の端部がステータ１０の外周面から底面（反ハウジング側の端面）に回り込む鉤形に設けられ、図示上側の端部がステータ１０を超えてハウジング５側まで延設され、ハウジング５の外周面に全周に渡り溶接されている。これにより、ハウジング５とケース６との間にステータ１０が固定され、アーマチャ１１とバルブボディ１２を除くサブアッシーが形成される。   Like the housing 5, the case 6 is made of metal such as iron or stainless steel, and is provided in a cylindrical shape surrounding the periphery of the stator 10. The case 6 is provided in a bowl shape in which the lower end portion in the drawing extends from the outer peripheral surface of the stator 10 to the bottom surface (end surface on the opposite side of the housing), and the upper end portion in the drawing extends beyond the stator 10 to the housing 5 side. It is welded to the outer peripheral surface of the housing 5 over the entire circumference. As a result, the stator 10 is fixed between the housing 5 and the case 6, and a subassembly excluding the armature 11 and the valve body 12 is formed.

このサブアッシーは、インジェクタボディ７の円筒壁部７ａの内側にバルブボディ１２を螺子結合して組み付けた後、そのバルブボディ１２とケース６との間にシム２５を挟み込んで円筒壁部７ａの内側に挿入され、円筒壁部７ａの外周に形成された雄螺子部７ｂにナット８を結合して固定される。なお、円筒壁部７ａの内側に挿入されるケース６の外周面には、Ｏリング２６が装着され、このＯリング２６によってケース６と円筒壁部７ａとの間がシールされる。   This sub-assembly is assembled by screwing the valve body 12 inside the cylindrical wall portion 7a of the injector body 7 and then inserting a shim 25 between the valve body 12 and the case 6 to the inner side of the cylindrical wall portion 7a. The nut 8 is coupled and fixed to the male screw portion 7b formed on the outer periphery of the cylindrical wall portion 7a. An O-ring 26 is attached to the outer peripheral surface of the case 6 inserted inside the cylindrical wall portion 7a, and the space between the case 6 and the cylindrical wall portion 7a is sealed by the O-ring 26.

次に、リード端子２２について図２を基に詳述する。
リード端子２２は、段付き円柱形状に設けられている。具体的には、一端側（図示下側）と他端側とに同一径を有するコイル側リード部２２ａとターミナル側リード部２２ｂとが設けられ、更に両リード部２２ａ、２２ｂ間に両リード部２２ａ、２２ｂより外径が大きい円柱部２２ｃが設けられている。即ち、両リード部２２ａ、２２ｂと円柱部２２ｃとの間に段差が形成されている。また、円柱部２２ｃの側面には、略平面部２２ｄ（図２参照）が形成されている。 Next, the lead terminal 22 will be described in detail with reference to FIG.
The lead terminal 22 is provided in a stepped cylindrical shape. Specifically, a coil side lead portion 22a and a terminal side lead portion 22b having the same diameter are provided on one end side (the lower side in the drawing) and the other end side, and further, both lead portions are provided between the lead portions 22a and 22b. A cylindrical portion 22c having an outer diameter larger than those of 22a and 22b is provided. That is, a step is formed between the lead portions 22a and 22b and the cylindrical portion 22c. Further, a substantially planar portion 22d (see FIG. 2) is formed on the side surface of the cylindrical portion 22c.

このリード端子２２は、コイル側リード部２２ａの端部がボビン１３に設けられた巻線取出し部２７（図１参照）に圧入等により埋設され、ターミナル側リード部２２ｂの端部がハウジング５に形成された貫通孔２４を通ってコネクタ４の内部にインサートされ、溶接等によりターミナル２３に接合されている。なお、ターミナル側リード部２２ｂは、図１に示す様に、ハウジング５の貫通孔２４に一組のブッシュ２８（絶縁材）を介して保持され、且つ両ブッシュ２８の間に配置されるＯリング２９によって貫通孔２４との間が燃料シールされている。   The lead terminal 22 has an end portion of the coil side lead portion 22a embedded in a winding take-out portion 27 (see FIG. 1) provided in the bobbin 13 by press fitting or the like, and an end portion of the terminal side lead portion 22b is embedded in the housing 5. The inserted through hole 24 is inserted into the connector 4 and joined to the terminal 23 by welding or the like. As shown in FIG. 1, the terminal-side lead portion 22 b is held in the through hole 24 of the housing 5 via a pair of bushes 28 (insulating material) and is arranged between the bushes 28. A fuel seal is provided between the through hole 24 and the fuel cell 29.

リード端子２２に接続される電磁コイル９は、図１に示す様に、ボビン１３の巻線取出し部２７より取り出された一方のコイル端部９ａがコイル側リード部２２ａに巻き付けられ、更に、コイル側リード部２２ａと円柱部２２ｃとの間に形成される段差を乗り越えて円柱部２２ｃの側面（略平面部２２ｄ）まで導かれ、その略平面部２２ｄに抵抗溶接により接合されている。また、電磁コイル９の他方のコイル端部（図示せず）は、インジェクタボディ７を介してアース接続されている。   As shown in FIG. 1, the electromagnetic coil 9 connected to the lead terminal 22 has one coil end portion 9a taken out from the winding take-out portion 27 of the bobbin 13 wound around the coil-side lead portion 22a. Overcoming the step formed between the side lead portion 22a and the cylindrical portion 22c, it is guided to the side surface (substantially flat portion 22d) of the cylindrical portion 22c, and is joined to the substantially flat portion 22d by resistance welding. The other coil end (not shown) of the electromagnetic coil 9 is grounded via the injector body 7.

上記リード端子２２の製造方法を以下に説明する。
ａ）円柱部２２ｃと同一径を有する棒状の金属素材を準備し、この金属素材の一端側と他端側の外径を切削により縮径して、コイル側リード部２２ａとターミナル側リード部２２ｂとを形成する。これにより、図２（ａ）に示す様に、両リード部２２ａ、２２ｂと円柱部２２ｃとが形成される。但し、両リード部２２ａ、２２ｂと円柱部２２ｃとの間に形成される段差の高さｈ（円柱部２２ｃの半径と両リード部２２ａ、２２ｂの半径との差）は、電磁コイル９の線径の半分（半径）以上に設けられている。
ｂ）続いて、図２（ｂ）に示す様に、円柱部２２ｃを径方向にプレスで押し潰して略平面部２２ｄを形成する。この時、略平面部２２ｄの横幅ｗは、両リード部２２ａ、２２ｂの直径ｄ以上に設けられる。また、略平面部２２ｄの縦幅は、溶接電極のサイズで決まるが、電磁コイル９の線径の５〜１５倍程度が設計上、製造上で良い結果が得られる。 A method for manufacturing the lead terminal 22 will be described below.
a) A rod-shaped metal material having the same diameter as that of the cylindrical portion 22c is prepared, and the outer diameters of one end side and the other end side of the metal material are reduced by cutting, so that the coil side lead portion 22a and the terminal side lead portion 22b. And form. Thereby, as shown to Fig.2 (a), both lead part 22a, 22b and the cylindrical part 22c are formed. However, the height h of the step formed between the two lead portions 22a and 22b and the cylindrical portion 22c (the difference between the radius of the cylindrical portion 22c and the radius of the two lead portions 22a and 22b) is the line of the electromagnetic coil 9. It is provided more than half the radius (radius).
b) Subsequently, as shown in FIG. 2B, the cylindrical portion 22c is crushed by a press in the radial direction to form a substantially flat portion 22d. At this time, the lateral width w of the substantially planar portion 22d is provided to be equal to or larger than the diameter d of both the lead portions 22a and 22b. Moreover, although the vertical width of the substantially planar portion 22d is determined by the size of the welding electrode, a result of about 5 to 15 times the wire diameter of the electromagnetic coil 9 is good in design and manufacture.

次に、燃料噴射弁の作動を説明する。
電磁コイル９に通電されてステータ１０が磁化されると、ステータ１０とアーマチャ１１との間に吸引力が作用するため、スプリング１６の付勢力に抗して、アーマチャ１１がステータ１０側（図１の上方）へ移動する。このアーマチャ１１の移動により、ボール弁１９が出口オリフィス１８を開くと、圧力室の油圧が出口オリフィス１８→連通路２１→縦孔２０→バルブ室１５→中心孔１４→圧力開放通路２を通って低圧側に開放される。
これにより、ニードルの背圧が低下して、ニードルを閉弁方向に付勢する力より、ニードルを開弁方向に付勢する油圧力の方が打ち勝つと、ニードルがリフトして、噴孔より燃料が噴射される。 Next, the operation of the fuel injection valve will be described.
When the electromagnetic coil 9 is energized and the stator 10 is magnetized, an attractive force acts between the stator 10 and the armature 11, so that the armature 11 is on the stator 10 side against the biasing force of the spring 16 (FIG. 1). To the top). When the ball valve 19 opens the outlet orifice 18 due to the movement of the armature 11, the hydraulic pressure of the pressure chamber passes through the outlet orifice 18 → the communication path 21 → the vertical hole 20 → the valve chamber 15 → the center hole 14 → the pressure release path 2. Open to the low pressure side.
As a result, when the back pressure of the needle is reduced and the hydraulic pressure that urges the needle in the valve opening direction overcomes the force that urges the needle in the valve closing direction, the needle lifts up from the nozzle hole. Fuel is injected.

その後、電磁コイル９への通電が停止して吸引力が消滅すると、アーマチャ１１がスプリング１６に押し戻され、ボール弁１９が出口オリフィス１８を閉じることにより、再び圧力室の油圧が上昇する。これにより、ニードルを閉弁方向に付勢する力が、ニードルを開弁方向に付勢する油圧力に打ち勝つと、ニードルが押し戻されて、噴孔に通じる燃料通路を遮断することにより、噴射が終了する。   Thereafter, when the energization of the electromagnetic coil 9 is stopped and the attractive force disappears, the armature 11 is pushed back to the spring 16 and the ball valve 19 closes the outlet orifice 18 so that the hydraulic pressure in the pressure chamber rises again. As a result, when the force that urges the needle in the valve closing direction overcomes the oil pressure that urges the needle in the valve opening direction, the needle is pushed back, and the fuel passage leading to the injection hole is blocked, thereby causing the injection. finish.

（実施例１の効果）
実施例１に記載した電磁弁１は、リード端子２２のコイル側リード部２２ａと円柱部２２ｃとの間に段差を形成することにより、その段差を利用して、電磁コイル９の一方のコイル端部９ａの位置（リード端子２２に対する溶接位置）を安定させることができる。
つまり、電磁コイル９は、ボビン１３から引き出された一方のコイル端部９ａが、リード端子２２のコイル側リード部２２ａに巻き付けられ、更にコイル側リード部２２ａと円柱部２２ｃとの間に形成される段差を乗り越える際に、その段差にコイル端部９ａを引っ掛けることで、円柱部２２ｃの側面（略平面部２２ｄ）まで導かれた一方のコイル端部９ａの位置を安定させることができる。特に、前記段差の高さｈが、電磁コイル９の線径の半分（半径）以上であるため、段差への引っ掛かりが良好になる。
また、円柱部２２ｃの側面に略平面部２２ｄが形成され、この略平面部２２ｄにコイル端部９ａを接合するので、溶接時の姿勢が安定する。これらの結果、確実に且つ容易に抵抗溶接を実施できる。 (Effect of Example 1)
In the electromagnetic valve 1 described in the first embodiment, a step is formed between the coil side lead portion 22a and the column portion 22c of the lead terminal 22 so that one of the coil ends of the electromagnetic coil 9 is utilized by using the step. The position of the portion 9a (the welding position with respect to the lead terminal 22) can be stabilized.
In other words, the electromagnetic coil 9 is formed between the coil side lead portion 22a and the cylindrical portion 22c, with one coil end portion 9a drawn from the bobbin 13 wound around the coil side lead portion 22a of the lead terminal 22. When overcoming the step, the coil end 9a is hooked on the step, so that the position of the one coil end 9a led to the side surface (substantially flat portion 22d) of the cylindrical portion 22c can be stabilized. Particularly, since the height h of the step is not less than half (radius) of the wire diameter of the electromagnetic coil 9, the step is easily caught.
Moreover, since the substantially flat part 22d is formed in the side surface of the cylindrical part 22c and the coil end part 9a is joined to this substantially flat part 22d, the attitude | position at the time of welding is stabilized. As a result, resistance welding can be carried out reliably and easily.

（変形例）
実施例１では、円柱部２２ｃと同一径を有する棒状の金属素材から切削とプレス加工によってリード端子２２を製造する方法を記載したが、それ以外に、以下の方法で製造することもできる。
コイル側リード部２２ａ及びターミナル側リード部２２ｂと同一径を有する棒状の金属素材と、円柱部２２ｃと同一径を有し、且つ棒状の金属素材の外径（即ちリード部の外径）と略等しい内径を有する環状の金属素材とを準備し、棒状の金属素材の外周に環状の金属素材を所定の位置まで圧入して組み付けた後、環状の金属素材によって形成される円柱部２２ｃを径方向にプレスで押し潰すことにより、円柱部２２ｃの側面に略平面部２２ｄを形成する。 (Modification)
In Example 1, although the method to manufacture the lead terminal 22 by cutting and press work from the rod-shaped metal raw material which has the same diameter as the cylindrical part 22c was described, it can also manufacture by the following method other than that.
A rod-shaped metal material having the same diameter as the coil-side lead portion 22a and the terminal-side lead portion 22b, and an outer diameter (that is, the outer diameter of the lead portion) of the rod-shaped metal material having the same diameter as the cylindrical portion 22c. An annular metal material having an equal inner diameter is prepared, and after the cylindrical metal material is press-fitted to the outer periphery of the rod-shaped metal material and assembled to a predetermined position, the cylindrical portion 22c formed by the annular metal material is radially The flat portion 22d is formed on the side surface of the cylindrical portion 22c by crushing with a press.

電磁弁の断面図である（実施例１）。(Example 1) which is sectional drawing of a solenoid valve. 電磁弁に用いられるリード端子の製造工程図である。It is a manufacturing process figure of the lead terminal used for a solenoid valve. 電磁弁の断面図である（従来技術）。It is sectional drawing of a solenoid valve (prior art).

符号の説明Explanation of symbols

１ 電磁弁
４ コネクタ
５ ハウジング
９ 電磁コイル
９ａ 一方のコイル端部
１３ ボビン
２２ リード端子
２２ａ コイル側リード部
２２ｂ ターミナル側リード部
２２ｃ 円柱部
２２ｄ 略平面部
２３ ターミナル
２４ 貫通孔
２９ Ｏリング（シール部材）
DESCRIPTION OF SYMBOLS 1 Solenoid valve 4 Connector 5 Housing 9 Electromagnetic coil 9a One coil end 13 Bobbin 22 Lead terminal 22a Coil side lead part 22b Terminal side lead part 22c Cylindrical part 22d Substantially flat part 23 Terminal 24 Through-hole 29 O-ring (seal member)

Claims (2)

ボビンに巻線された電磁コイルを有し、この電磁コイルへの通電により電磁石を形成するソレノイドと、
台座であるハウジングに取り付けられ、前記電磁コイルに通電するためのターミナルを有するコネクタと、
前記ハウジングに形成される貫通孔にシール部材を介して挿通され、前記ターミナルと前記電磁コイルとを電気的に接続するリード端子とを備える電磁弁の製造方法であって、
前記リード端子における一端側の端部と他端側の端部とにそれぞれ円柱形状のコイル側リード部とターミナル側リード部とを設けると共に、両リード部の間に前記両リード部より外径が大きい円柱部を設けることにより、少なくとも前記コイル側リード部と前記円柱部との間に段差を形成するに当たり、
前記円柱部と同一径を有する棒状の金属素材を準備し、この金属素材の一端側と他端側の外径を切削により縮径して、前記コイル側リード部と前記ターミナル側リード部とを形成した後、前記コイル側リード部と前記ターミナル側リード部との間に残された前記円柱部を径方向にプレスで押し潰して、前記円柱部の側面に略平面部を形成し、
前記ボビンから引き出された前記電磁コイルを前記コイル側リード部に巻き付け、更に前記段差を乗り越えて前記円柱部の側面まで導いてから、前記略平面部に溶接することを特徴とする電磁弁の製造方法。 A solenoid having an electromagnetic coil wound around a bobbin and forming an electromagnet by energizing the electromagnetic coil;
A connector attached to a housing that is a pedestal and having a terminal for energizing the electromagnetic coil;
A method of manufacturing an electromagnetic valve comprising a lead terminal that is inserted through a through-hole formed in the housing via a seal member and electrically connects the terminal and the electromagnetic coil ,
The lead terminal is provided with a cylindrical coil-side lead portion and a terminal-side lead portion at one end and the other end, respectively, and an outer diameter between the lead portions is larger than both lead portions. By providing a large cylindrical portion, at least forming a step between the coil side lead portion and the cylindrical portion,
A rod-shaped metal material having the same diameter as the cylindrical portion is prepared, and the outer diameter of one end side and the other end side of the metal material is reduced by cutting, and the coil side lead portion and the terminal side lead portion are After forming, the cylindrical part left between the coil side lead part and the terminal side lead part is crushed with a press in the radial direction to form a substantially flat part on the side surface of the cylindrical part,
Winding the electromagnetic coil drawn from the bobbin to the coil-side lead section, the lead further to the side surface of the cylindrical portion passes over the step, production of the solenoid valve, characterized in that welded to the substantially flat portion Way . ボビンに巻線された電磁コイルを有し、この電磁コイルへの通電により電磁石を形成するソレノイドと、
台座であるハウジングに取り付けられ、前記電磁コイルに通電するためのターミナルを有するコネクタと、
前記ハウジングに形成される貫通孔にシール部材を介して挿通され、前記ターミナルと前記電磁コイルとを電気的に接続するリード端子とを備える電磁弁の製造方法であって、
前記リード端子における一端側の端部と他端側の端部とにそれぞれ円柱形状のコイル側リード部とターミナル側リード部とを設けると共に、両リード部の間に前記両リード部より外径が大きい円柱部を設けることにより、少なくとも前記コイル側リード部と前記円柱部との間に段差を形成するに当たり、
前記コイル側リード部及び前記ターミナル側リード部と同一径を有する棒状の金属素材と、前記円柱部と同一径を有し、且つ前記棒状の金属素材の外径と略等しい内径を有する環状の金属素材とを準備し、
前記棒状の金属素材の外周に前記環状の金属素材を所定の位置まで圧入して組み付けた後、前記環状の金属素材によって形成される前記円柱部を径方向にプレスで押し潰して、前記円柱部の側面に略平面部を形成し、
前記ボビンから引き出された前記電磁コイルを前記コイル側リード部に巻き付け、更に前記段差を乗り越えて前記円柱部の側面まで導いてから、前記略平面部に溶接することを特徴とする電磁弁の製造方法。 A solenoid having an electromagnetic coil wound around a bobbin and forming an electromagnet by energizing the electromagnetic coil;
A connector attached to a housing that is a pedestal and having a terminal for energizing the electromagnetic coil;
A method of manufacturing an electromagnetic valve comprising a lead terminal that is inserted through a through-hole formed in the housing via a seal member and electrically connects the terminal and the electromagnetic coil,
The lead terminal is provided with a cylindrical coil-side lead portion and a terminal-side lead portion at one end and the other end, respectively, and an outer diameter between the lead portions is larger than both lead portions. By providing a large cylindrical portion, at least forming a step between the coil side lead portion and the cylindrical portion,
A rod-shaped metal material having the same diameter as the coil-side lead portion and the terminal-side lead portion, and an annular metal having the same diameter as the columnar portion and an inner diameter substantially equal to the outer diameter of the rod-shaped metal material Prepare the material and
After pressing and assembling the annular metal material to a predetermined position on the outer periphery of the rod-shaped metal material, the cylindrical part formed by the annular metal material is crushed by a press in a radial direction, and the cylindrical part Forming a substantially flat portion on the side surface of
Winding the electromagnetic coil drawn from the bobbin to the coil-side lead section, the lead further to the side surface of the cylindrical portion passes over the step, production of the solenoid valve, characterized in that welded to the substantially flat portion Method.
JP2005300326A 2005-10-14 2005-10-14 Manufacturing method of solenoid valve Expired - Fee Related JP4561583B2 (en)

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JP2005300326A JP4561583B2 (en) 2005-10-14 2005-10-14 Manufacturing method of solenoid valve
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KR100975234B1 (en) * 2008-04-29 2010-08-11 우성전기공업 주식회사 Lead wire type connector and solenoid with as the same
CN106450950B (en) * 2016-08-31 2018-06-08 湖南明盛高新科技有限公司 A kind of smart home intelligent socket based on Internet of Things
JP7299156B2 (en) * 2017-02-01 2023-06-27 ホートン， インコーポレイテッド Electromagnetic coil connection assembly and related method
JP7308685B2 (en) * 2019-07-23 2023-07-14 株式会社ユーシン actuator
DE102022103918A1 (en) 2022-02-18 2023-08-24 Thomas Magnete Gmbh Process for manufacturing an electronic component

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DE102006035347B4 (en) 2008-08-28
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GB2431297B (en) 2010-11-17
JP2007107652A (en) 2007-04-26
DE102006035347A1 (en) 2007-04-26

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