WO2013157089A1 - 電磁式燃料噴射弁 - Google Patents
電磁式燃料噴射弁 Download PDFInfo
- Publication number
- WO2013157089A1 WO2013157089A1 PCT/JP2012/060433 JP2012060433W WO2013157089A1 WO 2013157089 A1 WO2013157089 A1 WO 2013157089A1 JP 2012060433 W JP2012060433 W JP 2012060433W WO 2013157089 A1 WO2013157089 A1 WO 2013157089A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- coil wire
- fuel injection
- groove
- bobbin
- injection valve
- Prior art date
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Classifications
-
- 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
- F02M63/0017—Valves characterised by the valve actuating means electrical, e.g. using solenoid 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
- 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
- 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
- F02M51/0625—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures
- F02M51/0664—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding
- F02M51/0671—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding the armature having an elongated valve body attached thereto
- F02M51/0682—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding the armature having an elongated valve body attached thereto the body being hollow and its interior communicating with the fuel flow
Definitions
- the present invention relates to an improvement of an electromagnetic fuel injection valve mainly used for a fuel supply system of an internal combustion engine.
- FIG. 4 is a cross-sectional view showing a conventional general electromagnetic fuel injection valve.
- a fuel injection valve 1 drives a valve seat 2, a movable valve body 3 that is separated from and in contact with the valve seat 2 and supplies / shuts off fuel, a holder 4 that holds these, and a valve body 3.
- the solenoid device 5 is used.
- the valve body 3 includes a valve portion 3a that is separated from and in contact with the valve seat 2, an armature 3b made of magnetic metal, a pipe portion 3c that integrally couples the valve portion 3a and the armature 3b, and is adjusted by the position of the rod 6. It is pressed against the valve seat 3 by the pressing force of the spring 7.
- the solenoid device 5 attracts the armature 3b against the pressing force of the spring 7 and moves the valve body 3 upward.
- the core 51 is made of magnetic metal, and the coil 52 disposed on the outer periphery of the core 51.
- the bobbin 53 that supports the coil 52 is provided.
- the core 51 is fixed to the housing 9 by a cap 8, and the holder 4 is integrally attached to the other end of the housing 9 by a ring 10.
- the armature 3b is sucked against the pressing force of the spring 7, and the valve portion 3a is separated from the valve seat 2 to inject fuel. become.
- the present invention has been made in view of the above problems, and in the solenoid device 5 of the fuel injection valve 1, when the coil wire 52 intersects the winding start side 52a and the winding end side 52b of the coil wire 52,
- the object of the present invention is to prevent contact between the coil wires 52 at the intersecting portion 52c by an easy and low-cost method, and to prevent short circuit and disconnection.
- the winding start side and the winding end side of the coil wire intersect each other and are attached to the bobbin.
- the bobbin is provided with a groove larger than the coil wire diameter, and the coil wire winding start side The winding end side is separated from the upper and lower stages of the groove at the intersection.
- the winding start side and the winding end side of the coil wire can be separated into the upper stage and the lower stage of the step, respectively, and it is possible to prevent the coil wires from contacting each other at the intersection.
- FIG. 1 It is a perspective view which shows the structure of the bobbin which is the principal part of the electromagnetic fuel injection valve which concerns on Embodiment 1 of this invention.
- the principal part structure which concerns on Embodiment 1 of this invention is shown, (A) is a top view, (B) is a side view.
- FIG. 1 is a perspective view showing a bobbin shape that is a main part of an electromagnetic fuel injection valve according to Embodiment 1 of the present invention
- FIGS. 2A and 2B are views showing coils in the bobbin according to Embodiment 1.
- FIG. FIG. 3 is a plan view showing a state where a wire is wound, a side view showing a state where a coil wire is omitted
- FIG. 3 is a cross-sectional view taken along line YY in a state where a coil wire is wound.
- a bobbin 53 constituting the solenoid device 5 is formed of an insulating resin material, a cylindrical portion 53a around which a coil wire is wound, and a support portion 53b formed to protrude in the circumferential direction at the upper end of the cylindrical portion 53a. , And a pair of binding portions 53c formed to protrude in opposite directions from the support portion 53b.
- the winding start side 52a and the winding end side 52b of the coil wire 52 are wound around the pair of binding portions 53c, respectively, and the coil wire 52 is fixed so as not to be separated.
- first groove a and a second groove b having a height corresponding to the wire diameter of the coil wire 52 from the bottom surface of the first groove a. It is provided along the direction and forms two steps. Furthermore, a cutout c formed along the axial direction of the cylindrical portion 53a and communicating with the second groove b is provided on the side surface of the support portion 53b.
- first groove a is formed so that the bottom surface thereof is lower than the upper surface of the binding portion 53c and higher than the lower surface as shown in FIG. 2B
- second groove b is The bottom surface is formed so as to be lower than the top surface of the binding portion 53c.
- a cylindrical core is arrange
- the winding start side 52a of the coil wire 52 is wound around the binding portion 53c and wound around the cylindrical portion 53a through the first groove portion a, and the winding end side 52b of the coil wire 52 is wound around the second groove portion. Wound around the other binding portion 53c through b.
- the portion 52c where the winding start side 52a and the winding end side 52b intersect is As shown in FIG. 3, the coil wire 52 can be supported without contact.
- the coil wire 52 passes through the lower surface of the binding part 53c and the bottom surface of the first groove part a higher than the lower side.
- the winding start side 52a is pressed against the bottom surface of the first groove portion a by the tension at the time of winding.
- the winding end side 52b of the coil wire 52 wound around the outer periphery of the bobbin 53a is guided to the upper surface of the second groove b by passing the notch c provided in the bobbin 53a, and the other side. Is wound around the binding portion 53c.
- the coil wire 52 is held in a state of being hooked on the notch c, and the coil wire 52 can be prevented from dropping into the first groove portion a. Furthermore, by configuring the coil wire 52 to be wound through the upper surface of the binding portion 53c disposed above the second groove b, as shown in FIG. 3, the winding start side 52a and the winding end side 52b As a result, the winding start side 52a and the winding end side 52b of the coil wire 52 do not contact each other at the intersection 52c, thereby reliably preventing a short circuit or disconnection. be able to.
- the second groove portion b having a depth smaller than that of the first groove portion a is provided.
- the second groove portion b is not necessarily required, and the side wall of the support portion 53b is cut.
- the contact of the coil wire 52 can also be prevented by passing the coil wire 52 along the notch c.
- the winding start side 52a of the coil wire 52 is configured to be wired along the first groove portion a.
- the winding start side 52a starts to be wound along the second groove portion b, and the winding end side 52b is started to wind.
- the wiring may be provided along the first groove a through the side 52a.
- first groove portion a, the second groove portion b, and the notch c are inclined from the binding portion 53c in the tangential direction along the outer periphery of the cylindrical portion 53a, whereby the coil wire 52 is supported by the support portion 53b.
- Fuel injection valve 2 Valve seat 3: Valve body 4: Holder 5: Solenoid device 6: Rod 7: Spring 51: Core 52: Coil 53: Bobbin 52a: Winding start side 52b: Winding end side 52c: Intersection 53a : Cylindrical part 53b: Support part 53c: Tying part a: First groove b: Second groove c: Notch
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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)
- Fuel-Injection Apparatus (AREA)
- Electromagnets (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
Description
図において、燃料噴射弁1は、弁座2と、この弁座2に対して離接し、燃料を供給/遮断する可動の弁体3と、これらを保持するホルダ4と、弁体3を駆動するためのソレノイド装置5などから構成されている。ここで、弁体3は、弁座2と離接する弁部3a、磁性金属からなるアマチュア3b、弁部3aおよびアマチュア3bを一体に結合するパイプ部3cからなり、ロッド6の位置により調整されるスプリング7の押圧力によって弁座3へ押し付けられている。
さらに、コア51はキャップ8によってハウジング9に固定され、このハウジング9の他端にはリング10によってホルダ4が一体に取り付けられている。
このような燃料噴射弁1においては、コイル52に通電することにより、スプリング7の押圧力に抗してアマチュア3bを吸引し、弁部3aを弁座2から離座させて燃料を噴射させることになる。
このような従来の電磁式燃料噴射弁1として特開2006-90266号公報が知られている。なお、コイル線52の巻き始め側52aと巻き終わり側52bを交差させないソレノイド装置として特開平6-26418号公報に示されたものがある。
以下、この発明を実施するための形態について図1~図3に基づいて説明する。
図1は、この発明の実施の形態1に係る電磁式燃料噴射弁の要部であるボビン形状を示す斜視図、図2(A)、(B)は、実施の形態1に係るボビンにコイル線を巻き付けた状態を示す平面図およびコイル線を省略した状態を示す側面図、図3はコイル線を巻き付けた状態におけるY-Y線に沿った断面図である。
なお、円筒部53aの中空部には筒状のコアが配置されることになる。
このとき、第1の溝部aの底面が、第2の溝部bの底面よりコイル線52の線径分低く形成されているため、巻き始め側52aと巻き終わり側52bとが交差する部分52cは、図3に示すように接触することがなく、コイル線52を支持させることができる。
5:ソレノイド装置 6:ロッド 7:スプリング
51:コア 52:コイル 53:ボビン
52a:巻き始め側 52b:巻き終わり側 52c:交差部
53a:円筒部 53b:支持部 53c:絡げ部
a:第1の溝 b:第2の溝 c:切り欠き
Claims (5)
- 弁座と、この弁座に対向して配置された可動の弁体と、この可動の弁体を吸引して上記弁座に対して離座させ、燃料を噴射させるソレノイド装置とを備え、上記ソレノイド装置は、コイル線と、このコイル線を巻き付けて支持するボビンと、磁路を形成するコアとを有し、上記コイル線の巻き始め側と巻き終わり側を交差させてなる電磁式燃料噴射弁において、
上記ボビンは、上記コイル線を巻き付ける円筒部と、上記コイル線の巻き始め側と巻き終わり側とを固定する一対の絡げ部と、この一対の絡げ部を支持する支持部とを有するとともに、上記支持部に上記コイル線径よりも大きい溝を設け、この溝部に上記コイル線の巻き始め側または巻き終わり側を通し、上記コイル線の交差部を上記溝部によって上下段に分離するように構成したことを特徴とする電磁式燃料噴射弁。 - 上記ボビンにおける支持部の側面に切り欠きを設け、上記コイル線の巻き始め側を上記ボビンの溝部を通して上記円筒部に巻き付けられるとともに、上記コイル線の巻き終わり側を上記切り欠きを通して上記ボビンの絡げ部に誘導したことを特徴とする請求項1記載の電磁式燃料噴射弁。
- 上記ボビンの溝部および切り欠きを上記一対の絡げ部と上記円筒部の外周に沿った方向に傾斜させたことを特徴とする請求項2記載の電磁式燃料噴射弁。
- 上記ボビンの溝部底面を一対の絡げ部の下面よりも下方に設けるとともに、上記ボビンの溝部上面が上記絡げ部上面よりも上方となるように構成したことを特徴とする請求項1記載の電磁式燃料噴射弁。
- 上記コイル線の巻き始め側を通す第1の溝と、巻き終わり側を通す第2の溝とを設け、上記コイル線の交差部を上記第1、第2の溝によって上下段に分離するように構成したことを特徴とする請求項1記載の電磁式燃料噴射弁。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112012006236.1T DE112012006236T5 (de) | 2012-04-18 | 2012-04-18 | Elektromagnetisches Kraftstoffeinspritzventil |
CN201280069553.1A CN104114844B (zh) | 2012-04-18 | 2012-04-18 | 电磁式燃料喷射阀 |
JP2014511015A JPWO2013157089A1 (ja) | 2012-04-18 | 2012-04-18 | 電磁式燃料噴射弁 |
KR1020147019329A KR20140101434A (ko) | 2012-04-18 | 2012-04-18 | 전자식 연료 분사 밸브 |
PCT/JP2012/060433 WO2013157089A1 (ja) | 2012-04-18 | 2012-04-18 | 電磁式燃料噴射弁 |
US14/371,687 US9512810B2 (en) | 2012-04-18 | 2012-04-18 | Electromagnetic fuel injection valve |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2012/060433 WO2013157089A1 (ja) | 2012-04-18 | 2012-04-18 | 電磁式燃料噴射弁 |
Publications (1)
Publication Number | Publication Date |
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WO2013157089A1 true WO2013157089A1 (ja) | 2013-10-24 |
Family
ID=49383076
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2012/060433 WO2013157089A1 (ja) | 2012-04-18 | 2012-04-18 | 電磁式燃料噴射弁 |
Country Status (6)
Country | Link |
---|---|
US (1) | US9512810B2 (ja) |
JP (1) | JPWO2013157089A1 (ja) |
KR (1) | KR20140101434A (ja) |
CN (1) | CN104114844B (ja) |
DE (1) | DE112012006236T5 (ja) |
WO (1) | WO2013157089A1 (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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JP6510939B2 (ja) * | 2015-09-16 | 2019-05-08 | 日立オートモティブシステムズ株式会社 | 燃料噴射弁 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04315404A (ja) * | 1991-04-15 | 1992-11-06 | Omron Corp | 電磁石 |
JPH0965487A (ja) * | 1995-08-24 | 1997-03-07 | Kyocera Corp | 電磁型発音体 |
JP2004140154A (ja) * | 2002-10-17 | 2004-05-13 | Denso Corp | コイル部品並びにそれの製造方法及び製造装置 |
JP2006090266A (ja) * | 2004-09-27 | 2006-04-06 | Keihin Corp | 電磁式燃料噴射弁 |
JP2007180175A (ja) * | 2005-12-27 | 2007-07-12 | Denso Corp | コイル巻線用ボビン、ソレノイド装置および電磁スプール弁 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0626418A (ja) | 1992-07-10 | 1994-02-01 | Hitachi Ltd | 電磁式燃料噴射弁用ボビン |
JP4301047B2 (ja) * | 2004-03-18 | 2009-07-22 | 株式会社デンソー | コイル装置、コイル装置の製造方法、および燃料噴射弁 |
-
2012
- 2012-04-18 JP JP2014511015A patent/JPWO2013157089A1/ja active Pending
- 2012-04-18 WO PCT/JP2012/060433 patent/WO2013157089A1/ja active Application Filing
- 2012-04-18 DE DE112012006236.1T patent/DE112012006236T5/de not_active Withdrawn
- 2012-04-18 KR KR1020147019329A patent/KR20140101434A/ko not_active Application Discontinuation
- 2012-04-18 US US14/371,687 patent/US9512810B2/en active Active
- 2012-04-18 CN CN201280069553.1A patent/CN104114844B/zh not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04315404A (ja) * | 1991-04-15 | 1992-11-06 | Omron Corp | 電磁石 |
JPH0965487A (ja) * | 1995-08-24 | 1997-03-07 | Kyocera Corp | 電磁型発音体 |
JP2004140154A (ja) * | 2002-10-17 | 2004-05-13 | Denso Corp | コイル部品並びにそれの製造方法及び製造装置 |
JP2006090266A (ja) * | 2004-09-27 | 2006-04-06 | Keihin Corp | 電磁式燃料噴射弁 |
JP2007180175A (ja) * | 2005-12-27 | 2007-07-12 | Denso Corp | コイル巻線用ボビン、ソレノイド装置および電磁スプール弁 |
Also Published As
Publication number | Publication date |
---|---|
JPWO2013157089A1 (ja) | 2015-12-21 |
US9512810B2 (en) | 2016-12-06 |
US20150069152A1 (en) | 2015-03-12 |
DE112012006236T5 (de) | 2015-01-15 |
KR20140101434A (ko) | 2014-08-19 |
CN104114844A (zh) | 2014-10-22 |
CN104114844B (zh) | 2016-10-05 |
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