JP4511950B2 - Electromagnet especially for solenoid valve - Google Patents

Electromagnet especially for solenoid valve Download PDF

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Publication number
JP4511950B2
JP4511950B2 JP2004569460A JP2004569460A JP4511950B2 JP 4511950 B2 JP4511950 B2 JP 4511950B2 JP 2004569460 A JP2004569460 A JP 2004569460A JP 2004569460 A JP2004569460 A JP 2004569460A JP 4511950 B2 JP4511950 B2 JP 4511950B2
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coil
magnet
coil winding
coil support
electromagnet
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JP2006514207A (en
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イール ヴィルフリート
シュプラフケ ペーター
シュミット ウーヴェ
グライフ フーベルト
ヘーゲレ ティモ
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Robert Bosch GmbH
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Robert Bosch GmbH
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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
    • 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
    • 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
    • F02M57/00—Fuel-injectors combined or associated with other devices
    • F02M57/02—Injectors structurally combined with fuel-injection pumps
    • F02M57/022—Injectors structurally combined with fuel-injection pumps characterised by the pump drive
    • F02M57/023—Injectors structurally combined with fuel-injection pumps characterised by the pump drive mechanical
    • 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
    • F02M61/166—Selection of particular materials
    • 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
    • F02M61/20—Closing valves mechanically, e.g. arrangements of springs or weights or permanent magnets; Damping of valve lift
    • F02M61/205—Means specially adapted for varying the spring tension or assisting the spring force to close the injection-valve, e.g. with damping of valve lift
    • 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
    • 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
    • H01F2007/062—Details of terminals or connectors for electromagnets
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/32—Insulating of coils, windings, or parts thereof
    • H01F27/327—Encapsulating or impregnating
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F5/00—Coils
    • H01F5/06—Insulation of windings
    • 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

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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)
  • Fluid Mechanics (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Magnetically Actuated Valves (AREA)

Description

本発明は、請求項１の上位概念部に記載した、特に電磁弁のための電磁石に関する。   The invention relates to an electromagnet, in particular for a solenoid valve, as described in the superordinate conceptual part of claim 1.

このような形式の電磁石は、文献、例えば「Dieselmotor-Magnet，Verlag Vieweg, 2. Auflage 1998, Seite 246, Bild 14（ディーゼルモータ・磁石、フィーベーク出版社、第２版、１９９８年、第２４６頁、図面１４）」により公知である。この電磁石は、中空円筒形のコイル巻線と、このコイル巻線に接続されたコイル支持体とを備えたマグネットコイルを有している。コイル支持体は同様に中空円筒形に構成されていて、その外周壁に、横断面で見てｕ字形の凹部を有しており、この凹部内にコイル巻線が受容されている。これによってコイル支持体は、半径方向でも軸方向でも、電磁石のマグネットアーマチャ（マグネット回転子）とマグネットコイルとの間に配置されているので、マグネットアーマチャとマグネットコイルとの間に比較的大きい間隔が存在する。これによって、比較的大きい漂遊損失、及びひいては電磁石の磁気回路内における力の発生の遅れが生じる。従って最適な電磁石のダイナミズムは得られない。また、このようなコイル支持体の構成は、比較的大きい構造スペースを必要とするので、電磁石は全体的に大きく構成される。マグネットコイルを備えた公知の電磁石は、内燃機関の燃料噴射装置の電磁弁の、燃料噴射を制御する構成部分である。特に内燃機関の有害物質排出を低減させるために電磁弁を非常に迅速に切り換える必要がある。しかしながらこれは前述のようなコイル支持体の構成では困難である。しかも、電磁弁をできるだけコンパクトに構成することが望まれており、これは同様にコイル支持体の構成によって困難である。   Electromagnets of this type are described in the literature, for example “Dieselmotor-Magnet, Verlag Vieweg, 2. Auflage 1998, Seite 246, Bild 14 14) ”. The electromagnet has a magnet coil including a hollow cylindrical coil winding and a coil support connected to the coil winding. The coil support is similarly configured as a hollow cylinder, and has a u-shaped recess in its outer peripheral wall as viewed in cross section, and a coil winding is received in this recess. As a result, the coil support is disposed between the magnet armature (magnet rotor) of the electromagnet and the magnet coil in both the radial direction and the axial direction, so that a relatively large distance is provided between the magnet armature and the magnet coil. Exists. This causes a relatively large stray loss and thus a delay in the generation of forces in the magnetic circuit of the electromagnet. Therefore, the optimal electromagnet dynamism cannot be obtained. Moreover, since the structure of such a coil support body requires a relatively large structural space, the electromagnet is configured to be large as a whole. A known electromagnet including a magnet coil is a component that controls fuel injection of an electromagnetic valve of a fuel injection device of an internal combustion engine. In particular, it is necessary to switch the solenoid valve very quickly in order to reduce the emission of harmful substances in the internal combustion engine. However, this is difficult with the configuration of the coil support as described above. Moreover, it is desired to make the solenoid valve as compact as possible, which is also difficult due to the construction of the coil support.

発明の利点
これに対して、請求項１に記載した特徴を有する本発明による電磁石は、コイル支持体をディスク状（scheibenfoermig；円板状）に構成したことによって、マグネットコイルとマグネットアーマチャとの間の小さい間隔が得られ、これによって電磁石のダイナミズムが改善され、電磁石の構造的な大きさが縮小された、という利点が得られた。 Advantages of the Invention On the other hand, the electromagnet according to the present invention having the features described in claim 1 is formed between the magnet coil and the magnet armature by configuring the coil support in a disc shape. Thus, an advantage was obtained in that the dynamism of the electromagnet was improved and the structural size of the electromagnet was reduced.

コイル支持体が、コイル巻線の、マグネットアーマチャとは反対側に配置されていることによって、コイル巻線をコイル支持体に簡単に結合することができる。従属請求項に記載した構成によれば、コイル巻線の簡単な接触が可能である。 By arranging the coil support on the opposite side of the coil winding from the magnet armature , the coil winding can be easily coupled to the coil support. According to the configuration described in the dependent claims , simple contact of the coil windings is possible.

図面
本発明の実施例が図面に示されていて、以下に詳しく説明されている。図１には、電磁弁を備えた内燃機関のための燃料噴射装置が断面図で示され、図２には、電磁弁の電磁石が拡大して示され、図３には、図２に示した電磁石のコイル支持体及びコイル巻線を示している。 Drawings Embodiments of the invention are shown in the drawings and are described in detail below. FIG. 1 is a sectional view of a fuel injection device for an internal combustion engine equipped with a solenoid valve, FIG. 2 is an enlarged view of an electromagnet of the solenoid valve, and FIG. 2 shows the coil support and coil windings of the electromagnet.

実施例の説明
図１には例えば自動車の内燃機関のための燃料噴射装置が概略的に示されている。内燃機関は有利な形式で自己点火式の内燃機関であって、単数又は複数のシリンダを有している。この燃料噴射装置は例えば図１に示されているように、ポンプ・ノズルユニットとして構成されており、このポンプ・ノズルユニットは、内燃機関の各シリンダのための燃料高圧ポンプ１０と燃料噴射弁１２とを有している。これの各シリンダは１つの共通の構成ユニットを形成している。ポンプ・ノズルユニットには、燃料噴射を制御するための少なくとも１つの電磁弁５６，６０が配置されている。選択的に、燃料噴射装置は、ポンプ・管路ノズルユニットとして構成されていてもよい。このポンプ・管路ノズルユニットにおいては、内燃機関の各シリンダのためのそれぞれ１つの燃料高圧ポンプと燃料噴射弁とが設けられているが、この燃料高圧ポンプと燃料噴射弁とは互いに分離して配置されていて、液圧式の管路を介して互いに接続されていてもよい。ポンプ・管路・ノズルユニットの燃料高圧ポンプ又は燃料噴射弁には、燃料噴射ポンプを制御するための電磁弁が配置されている。さらに、燃料噴射装置はコモンレールシステムとして構成されていてもよい。このコモンレースシステムにおいては、燃料高圧ポンプによって燃料が蓄圧器に送られ、この蓄圧器は、内燃機関のシリンダに配置された各インジェクタに接続されていて、これらのインジェクタに、燃料噴射を制御するための各１つの電磁弁が配置されている。さらにまた燃料噴射装置は、燃料を高圧下で圧送する燃料噴射ポンプとして構成されていて、この燃料噴射ポンプに、内燃機関の各シリンダに配置された燃料噴射弁が接続されており、この場合、燃料噴射ポンプには、高圧発生及びひいては燃料噴射を制御するための電磁弁が配置されている。 DESCRIPTION OF THE EMBODIMENTS FIG. 1 schematically shows a fuel injection device for an internal combustion engine of a motor vehicle, for example. The internal combustion engine is an advantageous and self-igniting internal combustion engine and has one or more cylinders. For example, as shown in FIG. 1, the fuel injection device is configured as a pump / nozzle unit. The pump / nozzle unit includes a fuel high-pressure pump 10 and a fuel injection valve 12 for each cylinder of the internal combustion engine. And have. Each of these cylinders forms one common component unit. The pump / nozzle unit is provided with at least one solenoid valve 56, 60 for controlling fuel injection. Alternatively, the fuel injection device may be configured as a pump / line nozzle unit. This pump / line nozzle unit is provided with one fuel high-pressure pump and a fuel injection valve for each cylinder of the internal combustion engine. The fuel high-pressure pump and the fuel injection valve are separated from each other. They may be arranged and connected to each other via a hydraulic line. An electromagnetic valve for controlling the fuel injection pump is disposed in the fuel high-pressure pump or fuel injection valve of the pump / pipe / nozzle unit. Furthermore, the fuel injection device may be configured as a common rail system. In this common race system, fuel is sent to a pressure accumulator by a fuel high-pressure pump, and this pressure accumulator is connected to each injector arranged in a cylinder of an internal combustion engine, and controls fuel injection to these injectors. One electromagnetic valve for each is arranged. Furthermore, the fuel injection device is configured as a fuel injection pump that pumps fuel under high pressure, and a fuel injection valve disposed in each cylinder of the internal combustion engine is connected to the fuel injection pump. The fuel injection pump is provided with a solenoid valve for controlling high pressure generation and consequently fuel injection.

以下に本発明を、ポンプ・ノズルユニットにおいて使用した場合について説明する。この場合、ポンプ・ノズルユニットは、上記燃料噴射弁とは異なる構成のものにも応用することができる。燃料高圧ポンプ１０は、ポンプ体１６のシリンダ孔１８内に気密にガイドされたプランジャ２０を有しており、このプランジャ２０は、シリンダ孔１８内でポンプ作業室２２を制限している。プランジャ２０は、内燃機関のカムシャフトのカム２４によって少なくとも間接的に、例えばロッカアームを介して、戻しばね２６のばね力に抗してストローク運動で駆動される。ポンプ作業室２２に、プランジャ２０の吸込みストローク時に燃料が燃料貯蔵容器２８から例えばフィードポンプ２９によって供給される。   The case where the present invention is used in a pump / nozzle unit will be described below. In this case, the pump / nozzle unit can be applied to a configuration different from that of the fuel injection valve. The fuel high-pressure pump 10 has a plunger 20 that is airtightly guided in a cylinder hole 18 of the pump body 16, and the plunger 20 restricts a pump working chamber 22 in the cylinder hole 18. The plunger 20 is driven in a stroke motion against the spring force of the return spring 26 at least indirectly by a cam 24 of the camshaft of the internal combustion engine, for example via a rocker arm. Fuel is supplied to the pump working chamber 22 from the fuel storage container 28 by, for example, a feed pump 29 during the suction stroke of the plunger 20.

燃料噴射弁１２は、ポンプ体１６に接続された弁体３０を有しており、この弁体３０は、複数の部分より構成されていて、この弁体３０の孔３２内に噴射弁部材３４が長手方向しゅう動可能に気密にガイドされている。弁体３０とポンプ体１６との間に中間体３６が配置されている。弁体３０は、内燃機関のシリンダの燃焼室に向いた側の端部領域に少なくとも１つ有利には複数の噴射開口３８を有している。噴射弁部材３４は、燃焼室に向いた側の端部領域に、例えばほぼ円錐形状のシール面４０を有しており、このシール面４０は、弁体３０内でその燃焼室に向いた側の端部領域に形成された弁座４１と協働する。この弁座４１から又はこの弁座４１の後ろに噴射開口３８が導出している。弁体３０内で、噴射弁部材３４と孔３２との間に、弁座４１に向かって環状室４２が設けられており、この環状室４２は、その弁座４１とは反対側の端部において、孔３２の半径方向の拡張部を通じて、噴射弁部材３４を包囲する圧力室４４に移行している。噴射弁部材３４は、圧力室４４の高さ位置において、弁座４１に向けられた加圧ショルダ４６を有している。プリロード（予備荷重）のかけられた閉鎖ばね４８が、燃焼室と反対側の、噴射弁部材３４の端部に作用しており、この閉鎖ばね４８によって噴射弁部材３４が弁座４１に向かって押し付けられている。閉鎖ばね４８は、弁体３０の又は孔５０に続く中間体３６のばね室４９内に配置されている。   The fuel injection valve 12 has a valve body 30 connected to the pump body 16, and the valve body 30 is composed of a plurality of portions, and an injection valve member 34 is provided in a hole 32 of the valve body 30. Is guided in an airtight manner so that it can slide in the longitudinal direction. An intermediate body 36 is disposed between the valve body 30 and the pump body 16. The valve body 30 preferably has at least one injection opening 38 in its end region on the side facing the combustion chamber of the cylinder of the internal combustion engine. The injection valve member 34 has, for example, a substantially conical sealing surface 40 in an end region on the side facing the combustion chamber. The sealing surface 40 is a side facing the combustion chamber in the valve body 30. Cooperating with a valve seat 41 formed in the end region of the. An injection opening 38 is led out from the valve seat 41 or behind the valve seat 41. In the valve body 30, an annular chamber 42 is provided between the injection valve member 34 and the hole 32 toward the valve seat 41, and the annular chamber 42 is an end portion on the side opposite to the valve seat 41. In FIG. 5, the pressure chamber 44 surrounds the injection valve member 34 through the radially extending portion of the hole 32. The injection valve member 34 has a pressure shoulder 46 directed to the valve seat 41 at the height position of the pressure chamber 44. A preload (preload) closing spring 48 acts on the end of the injection valve member 34 on the side opposite to the combustion chamber, and the closing spring 48 moves the injection valve member 34 toward the valve seat 41. It is pressed. The closing spring 48 is arranged in a spring chamber 49 of the valve body 30 or of the intermediate body 36 following the hole 50.

ばね室４９の、圧力室４４とは反対側の端部に、より小さい直径を有する孔５０が続いている。この孔５０内に制御ピストン５１が気密にガイドされており、この制御ピストン５１は孔５０内で制御圧室５２を制限している。制御ピストン５１は噴射弁部材３４で支えられていて、制御圧室５２内に形成された圧力に基づいて閉鎖ばね４８を補助する、噴射弁部材３４に向かう閉鎖方向に作用する力を生ぜしめる。ポンプ作業室２２から、ポンプ体１６、中間体３６及び弁体３０を通る通路５４が、燃料噴射弁１２の圧力室４４内に通じている。また、通路５４から、フィードポンプ２９及び燃料貯蔵容器２８に通じる接続路５５が分岐している。この接続路５５は、２／２（２ポート２位置）切換弁として構成された第１の電磁弁５６によって制御される。この電磁弁５６は、電子式の制御装置５７によって制御されるが、以下に詳しく説明する。通路５４から別の通路５８が制御圧室５２内に通じていて、この制御圧室５２は、放圧領域例えば燃料貯蔵容器２８へのリターン管路を備えた接続部５９を有している。放圧領域と制御圧室５２との接続部５９は、第２の電磁弁６０によって制御され、この第２の電磁弁６０は同様に制御装置５７によって制御される。第１の電磁弁５６によって、燃料高圧ポンプ１０のポンプ作業室２２内の増圧が制御され、第２の電磁弁６０によって、制御圧室５２内の圧力が制御され、それによって燃料噴射弁１２の開放が制御される。第２の電磁弁６０及び制御圧室５２は省くことができ、この場合燃料噴射弁１２の開放は、閉鎖ばね４８によってのみ規定される。圧力室４４内に形成される圧力が、加圧ショルダ４６を介して、閉鎖ばね４８及び制御圧室５２に形成される圧力よりも大きい力を噴射弁部材３４に作用させると、噴射弁部材３４は開放方向３５で移動し、噴射開口３８を開放する。   A hole 50 having a smaller diameter continues at the end of the spring chamber 49 opposite the pressure chamber 44. The control piston 51 is airtightly guided in the hole 50, and the control piston 51 restricts the control pressure chamber 52 in the hole 50. The control piston 51 is supported by the injection valve member 34 and generates a force acting in the closing direction toward the injection valve member 34 that assists the closing spring 48 based on the pressure formed in the control pressure chamber 52. From the pump working chamber 22, a passage 54 passing through the pump body 16, the intermediate body 36 and the valve body 30 communicates with the pressure chamber 44 of the fuel injection valve 12. Further, a connecting path 55 that leads from the passage 54 to the feed pump 29 and the fuel storage container 28 is branched. This connection path 55 is controlled by a first electromagnetic valve 56 configured as a 2/2 (2 port 2 position) switching valve. The electromagnetic valve 56 is controlled by an electronic control device 57, which will be described in detail below. Another passage 58 communicates with the control pressure chamber 52 from the passage 54, and the control pressure chamber 52 has a connection portion 59 having a return line to the pressure release region, for example, the fuel storage container 28. The connection part 59 between the pressure release region and the control pressure chamber 52 is controlled by the second electromagnetic valve 60, and the second electromagnetic valve 60 is similarly controlled by the control device 57. The pressure increase in the pump working chamber 22 of the fuel high-pressure pump 10 is controlled by the first solenoid valve 56, and the pressure in the control pressure chamber 52 is controlled by the second solenoid valve 60, whereby the fuel injection valve 12 is controlled. Is controlled. The second solenoid valve 60 and the control pressure chamber 52 can be omitted, in which case the opening of the fuel injection valve 12 is defined only by the closing spring 48. When the pressure formed in the pressure chamber 44 is applied to the injection valve member 34 via the pressurizing shoulder 46, a force larger than the pressure formed in the closing spring 48 and the control pressure chamber 52 is applied to the injection valve member 34. Moves in the opening direction 35 and opens the injection opening 38.

図２には、電磁弁５６，６０が拡大して示されている。電磁弁は、マグネットコイル６４及びマグネットアーマチャ６６を備えた電磁弁６２を有している。弁部材６８はマグネットアーマチャ６６に接続されており、この弁部材６８によって、制御しようとする接続部を開閉することができる。マグネットコイル６４は、中空円筒形のコイル巻線７０を有しており、このコイル巻線７０は、軸方向でコイル巻線７０の隣に配置されたコイル支持体７２に接続されている。コイル支持体７２は、マグネットアーマチャ６６とは反対側の、コイル巻線７０の側に配置されている。コイル支持体７２はフラットなディスク状に構成されていて、有利にはプラスチック特に熱可塑性プラスチックより成っている。コイル巻線７０は、このコイル巻線７０に向いた側の、コイル支持体７２の端面側に接続されている。コイル巻線７０とコイル支持体７２との接続は、形状結合（形状による束縛）的な結合、例えば歯列又は接着によって行われる。コイル巻線７０とコイル支持体７２との特に有利な結合は、コイル巻線７０が、加熱によって溶融するバックエナメル線（Backlackdraht）より成っていることによって可能である。コイル巻線７０の製作後に、コイル巻線７０は、このコイル巻線７０に高圧電流が流れることによって加熱されるので、バックエナメル線が溶融し、それと同時にコイル巻線７０は軸方向でコイル支持体７２に押し付けられる。この際に、コイル支持体７２のプラスチックも溶融し、コイル巻線７０の溶融したバックエナメル線と結合されて、冷却後にコイル巻線７０とコイル支持体７２との間の結合が得られる。コイル巻線７０を軸方向で圧縮することによって、コイル巻線７０は圧縮されて、必要な寸法、直径及び厚さを有するように、所望に成形される。   In FIG. 2, the solenoid valves 56 and 60 are shown enlarged. The electromagnetic valve has an electromagnetic valve 62 including a magnet coil 64 and a magnet armature 66. The valve member 68 is connected to a magnet armature 66, and the valve member 68 can open and close a connection portion to be controlled. The magnet coil 64 has a hollow cylindrical coil winding 70, and this coil winding 70 is connected to a coil support 72 arranged next to the coil winding 70 in the axial direction. The coil support 72 is disposed on the coil winding 70 side opposite to the magnet armature 66. The coil support 72 is constructed in the form of a flat disk and is preferably made of plastic, in particular thermoplastic. The coil winding 70 is connected to the end face side of the coil support 72 on the side facing the coil winding 70. The coil winding 70 and the coil support 72 are connected to each other by shape coupling (for example, dentition or adhesion). A particularly advantageous connection between the coil winding 70 and the coil support 72 is possible because the coil winding 70 consists of a back enamel wire that melts upon heating. After the coil winding 70 is manufactured, the coil winding 70 is heated by a high-voltage current flowing through the coil winding 70, so that the back enamel wire is melted, and at the same time, the coil winding 70 is axially supported by the coil. It is pressed against the body 72. At this time, the plastic of the coil support 72 is also melted and coupled with the melted back enamel wire of the coil winding 70, so that the coupling between the coil winding 70 and the coil support 72 is obtained after cooling. By axially compressing the coil winding 70, the coil winding 70 is compressed and shaped as desired to have the required dimensions, diameter and thickness.

コイル支持体７２には、コイル巻線７０とは反対側で管状の２つの付加部７４が一体成形されており、この管状の付加部７４内で、コイル巻線７０のワイヤの各端部７１がガイドされている。これらの付加部７４は、ほぼ直径方向で互いに向き合って配置されている。これらの付加部７４内にそれぞれ１つの接触ピン７６が挿入、例えば押し込まれており、この接触ピン７６は、コイル巻線７０の各端部７１に、例えば溶接又はろう付けによって電気的に接続されている。マグネットコイル６４は磁石上部７８内に挿入されていて、この磁石上部７８内で、液状の流し込み材料７０、例えば後で硬化する流動性のエポキシ樹脂が充填されることによって固定される。この場合、接触ピン７６は流し込み材料及び磁石上部７８から突き出している。マグネットコイル６４とマグネットアーマチャ６６との間には、半径方向及び軸方向に、流し込み材料７９の厚さに応じた僅かな間隔だけが存在している。これによって、電磁石６２の磁気回路の漂遊損失が小さく維持される。これによって電磁石の質量が小さく維持され、それによって電磁石６２のダイナミズムが改善される。つまり、マグネットアーマチャ６６は、慣性が小さく、相応に迅速に運動することができる。マグネットコイル６４に給電されると、磁石力が発生し、この磁石力によってマグネットアーマチャ６６は、極性に応じてマグネットコイル６４に向かって軸方向で引き寄せられるか、又はこのマグネットコイル６４から離れる方向に移動する。マグネットコイル６４に給電されないと、マグネットアーマチャ６６はばねによって初期位置で保持される。マグネットアーマチャ６６が移動する際に、弁部材６８は、それぞれの接続を開放する位置と、それぞれの接続を閉鎖する位置との間で、マグネットアーマチャ６６と一緒に移動する。   Two additional portions 74 having a tubular shape are integrally formed on the coil support 72 on the side opposite to the coil winding 70, and each end 71 of the wire of the coil winding 70 is formed in the tubular additional portion 74. Has been guided. These additional portions 74 are disposed so as to face each other in a substantially diametrical direction. A contact pin 76 is inserted, for example, pushed into each of these additional portions 74, and this contact pin 76 is electrically connected to each end 71 of the coil winding 70 by, for example, welding or brazing. ing. The magnet coil 64 is inserted into the magnet upper part 78, and is fixed by being filled with a liquid pouring material 70, for example, a fluid epoxy resin that is cured later. In this case, the contact pin 76 protrudes from the casting material and the magnet top 78. There is a slight gap between the magnet coil 64 and the magnet armature 66 in the radial direction and the axial direction according to the thickness of the casting material 79. Thereby, stray loss of the magnetic circuit of the electromagnet 62 is kept small. This keeps the mass of the electromagnet small, thereby improving the dynamism of the electromagnet 62. That is, the magnet armature 66 has a small inertia and can move correspondingly quickly. When power is supplied to the magnet coil 64, a magnet force is generated, and the magnet armature 66 is attracted in the axial direction toward the magnet coil 64 depending on the polarity, or in a direction away from the magnet coil 64. Moving. If power is not supplied to the magnet coil 64, the magnet armature 66 is held in the initial position by a spring. As the magnet armature 66 moves, the valve member 68 moves with the magnet armature 66 between a position where each connection is opened and a position where each connection is closed.

電磁弁を備えた内燃機関のための燃料噴射装置の断面図である。It is sectional drawing of the fuel-injection apparatus for the internal combustion engines provided with the solenoid valve. 電磁弁の電磁石の拡大した断面図である。It is sectional drawing to which the electromagnet of the solenoid valve was expanded. 図２に示した電磁石のコイル支持体及びコイル巻線を示す部分的な断面図である。It is a fragmentary sectional view which shows the coil support body and coil winding of the electromagnet shown in FIG.

Claims (3)

マグネットコイル（６４）及びマグネットアーマチャ（６６）を備えた、電磁弁のための電磁石であって、マグネットコイル（６４）は、コイル支持体（７２）と、このコイル支持体（７２）に接続された中空円筒形のコイル巻線（７０）とを有している形式のものにおいて、
前記コイル支持体（７２）が、軸方向で前記コイル巻線（７０）の隣に配置されたディスクとして構成されており、前記コイル支持体（７２）が、前記コイル巻線（７０）の、マグネットアーマチャ（６６）とは反対側に配置されており、前記コイル巻線（７０）がバックエナメル線より成っており、前記コイル支持体（７２）がプラスチックより成っていて、該コイル支持体（７２）がバックエナメル線と共に溶融されることによって、前記コイル巻線（７０）が前記コイル支持体（７２）に接続されていることを特徴とする、電磁弁。Magnet comprising a coil (64) and the magnet armature (66), a magnet for the electric solenoid valve, a magnet coil (64), the connecting coil support (72), the coil support (72) In the form of having a hollow cylindrical coil winding (70) formed,
The coil support (72) is configured in the axial direction as a disc which is arranged next to the coil winding (70), the coil support (72), said coil winding (70), The coil armature (66) is disposed on the opposite side, the coil winding (70) is made of a back enamel wire, the coil support (72) is made of plastic, and the coil support ( The electromagnetic valve is characterized in that the coil winding (70) is connected to the coil support (72) by melting 72) together with a back enamel wire . 前記コイル巻線（７０）とは反対側で前記コイル支持体（７２）に少なくとも１つの管状の付加部（７４）が一体成形されており、該付加部（７４）内に前記コイル巻線（７０）の少なくとも一端部（７１）が配置されている、請求項１記載の電磁石。 Wherein the coil support on the opposite side coil winding (70) is (72) in which the addition of the at least one tubular (74) is integrally molded, the coil winding該付Kabe (74) in ( at least one end portion (71) is arranged, according to claim 1 Symbol placement of the electromagnet 70). 前記少なくとも１つの管状の付加部（７４）内に接触ピン（７６）が挿入されていて、該接触ピン（７６）が、前記コイル支持体（７０）の端部（７１）に電気的に接続されている、請求項２記載の電磁石。 Wherein the at least one additional portion of the tubular (74) in contact in the pin (76) have been inserted, the contact pin (76) is electrically connected to the ends of the coil support (70) (71) The electromagnet according to claim 2 .
JP2004569460A 2003-03-17 2003-10-28 Electromagnet especially for solenoid valve Expired - Fee Related JP4511950B2 (en)

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DE2003111523 DE10311523A1 (en) 2003-03-17 2003-03-17 Electromagnet, especially for a solenoid valve
PCT/DE2003/003577 WO2004083625A1 (en) 2003-03-17 2003-10-28 Electromagnet for an electromagnetic valve

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JPS6117704U (en) * 1984-07-05 1986-02-01 愛三工業株式会社 electromagnet
CH677153A5 (en) * 1989-02-13 1991-04-15 Landis & Gyr Betriebs Ag Power supply for electricity meter components
KR100231381B1 (en) * 1991-01-15 1999-11-15 우.그라우 Electro-hydraulic pressure regulator
JPH0854080A (en) * 1994-08-09 1996-02-27 Nisshinbo Ind Inc Pressure control device integral with electronic control device
DE4431044A1 (en) * 1994-09-01 1996-03-07 Bosch Gmbh Robert Gas distributor device for fuel injection systems
AT404206B (en) * 1996-11-20 1998-09-25 Harman Int Ind METHOD FOR PRODUCING COILS
GB0001766D0 (en) * 2000-01-27 2000-03-15 Delphi Tech Inc Fuel injector
DE10026564C1 (en) * 2000-05-30 2001-11-29 Daimler Chrysler Ag Valve control unit
DE10051433A1 (en) * 2000-10-17 2002-05-02 Conti Temic Microelectronic Solenoid for electronic valve controller e.g. for vehicle braking system, has three or more connections for two or more windings
EP1217272B1 (en) * 2000-12-19 2005-01-12 Fluid Automation Systems S.A. Electromagnetic valve
DE10202324A1 (en) * 2002-01-23 2003-07-31 Bosch Gmbh Robert Solenoid valve and process for its manufacture

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