JP2846198B2 - Electromagnetic fuel injection valve - Google Patents
Electromagnetic fuel injection valveInfo
- Publication number
- JP2846198B2 JP2846198B2 JP32397292A JP32397292A JP2846198B2 JP 2846198 B2 JP2846198 B2 JP 2846198B2 JP 32397292 A JP32397292 A JP 32397292A JP 32397292 A JP32397292 A JP 32397292A JP 2846198 B2 JP2846198 B2 JP 2846198B2
- Authority
- JP
- Japan
- Prior art keywords
- bobbin
- connector
- injection valve
- conductive wire
- fuel injection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Fuel-Injection Apparatus (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は電磁式燃料噴射弁に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electromagnetic fuel injection valve.
【０００２】[0002]
【従来の技術】電磁式燃料噴射弁は例えば特公昭56−11
071 号公報に記載のもの等で知られている。2. Description of the Related Art An electromagnetic fuel injection valve is disclosed, for example, in JP-B-56-11.
No. 071 is known.
【０００３】従来の燃料噴射装置において、電磁式燃料
噴射弁(以下、インジェクタと言う)のコネクタは、ボビ
ンに一部が埋め込まれ、燃料の封止機構であるｏリング
を備ている。ボビンにコイル状に巻きつけた後の組立て
の際、コネクタにｏリング挿入もしくはターミナルを結
合する時にコネクタに力が加わり、ボビンにコイル状に
巻きつけた導通線が引っ張られる。この事によって導通
線が組立て時または冷熱サイクルによって断線する。In a conventional fuel injection device, a connector of an electromagnetic fuel injection valve (hereinafter, referred to as an injector) is partially embedded in a bobbin and has an o-ring as a fuel sealing mechanism. During assembly after winding the coil around the bobbin, a force is applied to the connector when inserting the o-ring or connecting the terminal to the connector, and the conductive wire wound around the bobbin in a coil shape is pulled. This causes the conductive wire to break during assembly or due to thermal cycling.
【０００４】また、既存のインジェクタでは、コネクタ
の全体形状が板状であり、ｏリングによってコネクタか
ら漏れる燃料を完全にシールすることはできなかった。[0004] Further, in the existing injector, the entire shape of the connector is plate-shaped, and the fuel leaking from the connector cannot be completely sealed by the o-ring.
【０００５】[0005]
【発明が解決しようとする課題】本発明は上記実情に鑑
みなされたものであり、その目的とするところは、組立
て時および冷熱サイクルによる導通線の断線を防止し、
かつ気密性を確保するインジェクタ構造を提供しようと
するものである。SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to prevent disconnection of a conductive wire during assembly and cooling / heating cycles.
Another object is to provide an injector structure that ensures airtightness.
【０００６】[0006]
【課題を解決するための手段】上記目的を達成するた
め、本発明は、コネクタに気密性を確保するｏリングを
備える構造のインジェクタにおいて、前記コネクタとボ
ビンとの接合性をコネクタの形状もしくはコネクタのボ
ビンに埋め込まれる部分に接着剤を塗布することによっ
て向上させるものである。In order to achieve the above object, the present invention relates to an injector having a structure provided with an o-ring for ensuring airtightness of a connector. Is improved by applying an adhesive to a portion to be embedded in the bobbin.
【０００７】[0007]
【作用】コネクタは導通線を巻きつけるボビンにがたつ
きなく強固に固定され、インジェクタ組立て時および組
立て後の冷熱サイクルなどの環境条件の変化にたいして
も導通線を断線させることはない。The connector is firmly fixed to the bobbin around which the conductive wire is wound without rattling, so that the conductive wire is not disconnected even when environmental conditions such as a cooling and heating cycle during and after the assembly of the injector are changed.
【０００８】またコネクタにｏリングを備える構造とす
ることによってインジェクタの気密性を確保できる。In addition, the airtightness of the injector can be ensured by adopting a structure in which the connector is provided with an o-ring.
【０００９】[0009]
【実施例】以下、本発明の一実施例を図１により説明す
る。インジェクタ１の磁気回路は、固定鉄芯（以下コ
ア）２，ヨーク３，プランジャ４からなり、コア２の内
部には、プランジャ４とボール弁５からなる可動部をノ
ズル６のシート面７に押圧するスプリング８，コネクタ
１２はボビン９に埋め込まれ、本発明の形状もしくは接
着剤を塗布することにてボビン９とがたつきなく固定さ
れている。磁気回路を励磁するところの導通線１１は前
記コネクタ１２の先端の巻きつけ部１３に巻きつけら
れ、ボビン９に巻かれ設けられる。このコイル組立て体
１４はコア２のつば部穴１５に挿入され、コネクタ１２
とコア２に圧入されたプラグ１６とボビン９とコア２の
隙間から燃料がコネクタ１２，ターミナル２０とインジ
ェクタ１の図示しない燃料配管との取付けおよび駆動電
流をインジェクタ１に通電させるための図示しないカプ
ラを固定するための樹脂により成形されたヨークモール
ド２４の隙間を通って外部に漏れるのを防いでいるｏリ
ング１０によって固定されている。またヨーク３には外
周にフィルタ１７を備えている。またコネクタ１２には
駆動電流を外部より入力するターミナル２０が接合され
ている。荷動部は、プランジャ４，ボール弁５，ガイド
リング２１が一体に形成され、ガイドリング２１はコア
２内径でガイドされる。ノズル６には、ボール弁５をガ
イドし、燃料に旋回力を与えるスワラ１９，可動弁のリ
フト量を規制するストッパ１８を設けている。An embodiment of the present invention will be described below with reference to FIG. The magnetic circuit of the injector 1 includes a fixed iron core (hereinafter, core) 2, a yoke 3, and a plunger 4. The spring 8 and the connector 12 are embedded in the bobbin 9, and are fixed to the bobbin 9 without play by applying the shape or the adhesive of the present invention. The conductive wire 11 for exciting the magnetic circuit is wound around the winding portion 13 at the tip of the connector 12 and wound around the bobbin 9. The coil assembly 14 is inserted into the flange hole 15 of the core 2 and the connector 12
And a plug (not shown) for supplying fuel from the gap between the plug 16, the bobbin 9, and the core 2 press-fitted into the core 2 to the connector 12, the terminal 20 and a fuel pipe (not shown) of the injector 1, and to supply a drive current to the injector 1. Is fixed by an o-ring 10 which prevents leakage to the outside through a gap of a yoke mold 24 formed of a resin for fixing the resin. The yoke 3 is provided with a filter 17 on the outer periphery. A terminal 20 for externally inputting a drive current is connected to the connector 12. The plunger 4, the ball valve 5, and the guide ring 21 are integrally formed in the loading portion, and the guide ring 21 is guided by the inner diameter of the core 2. The nozzle 6 is provided with a swirler 19 that guides the ball valve 5 to give a swirling force to the fuel and a stopper 18 that regulates the lift amount of the movable valve.
【００１０】上記構成のもとに、噴射弁の動作を説明す
る。コイル１１に電気信号が印加されると、コア２，ヨ
ーク３，プランジャ４で磁気回路が構成され、プランジ
ャ４がコア２側に吸引される。プランジャ４はボール弁
５と一体に結合されており、プランジャ４が移動するこ
とでボール弁５も移動して、ノズル６のシート面７から
離れ開弁する。燃料は、燃料ポンプ，燃圧レギュレータ
により加圧調整され、燃料通路２２を通り噴射弁の内部
に流入し、ノズル部に供給される。The operation of the injection valve based on the above configuration will be described. When an electric signal is applied to the coil 11, a magnetic circuit is formed by the core 2, the yoke 3, and the plunger 4, and the plunger 4 is attracted to the core 2. The plunger 4 is integrally connected to the ball valve 5. The movement of the plunger 4 causes the ball valve 5 to move, and separates from the seat surface 7 of the nozzle 6 to open. The fuel is pressurized and adjusted by a fuel pump and a fuel pressure regulator, flows into the injection valve through the fuel passage 22, and is supplied to the nozzle portion.
【００１１】ノズル部に供給された燃料は、スワラ１９
によって旋回力が与えられ、オリフィス２３を通って噴
射される。The fuel supplied to the nozzle is swirler 19
A swiveling force is given by the orifice 23 to be injected.
【００１２】図２，図３は、コイル組立て体１４の組立
て工程上の本発明の効果を示す。FIGS. 2 and 3 show the effect of the present invention on the assembly process of the coil assembly 14. FIG.
【００１３】まず、図２において、導通線１１はボビン
９に斜線部分２６を埋め込まれたコネクタ１２の先端の
巻きつけ部１３に巻きつけられ、ボビン９に巻かれる。
所定の巻き数を確保した後、更に巻き終わりを前記巻き
つけ部１３とは別のコネクタ１２の先端の巻きつけ部１
３に巻きつけられる。そのとき、コネクタ１２とボビン
９の間は導通線１１がブリッジ状２５になる。First, in FIG. 2, the conductive wire 11 is wound around the winding portion 13 at the tip of the connector 12 in which the hatched portion 26 is embedded in the bobbin 9, and is wound around the bobbin 9.
After securing a predetermined number of windings, the winding end is further wound at the end of the winding portion 1 of the connector 12 different from the winding portion 13.
Wound around 3. At that time, the conductive wire 11 has a bridge shape 25 between the connector 12 and the bobbin 9.
【００１４】次に、図３に示すようにコネクタ１２を折
り曲げコイル組立て体１４とする。ここで、ボビン９と
コネクタ１２にがたつきがあると、ブリッジ状２５の導
通線１１に許容応力以上の力が加わり断線する。また組
立て時は断線しなくても、導通線１１のブリッジ状２５
の部分に残留応力があり、冷熱サイクルで断線する。図
４は本発明の一例を示す。（ａ）は（ｂ）の断面図であ
り、斜線部分２６がボビン９に埋め込まれ、本発明の効
果を得るため一部が板状となっている。なお、インジェ
クタの気密性を確保するｏリングが装着される部分２７
の断面形状は円形になっている。Next, as shown in FIG. 3, the connector 12 is bent to form a coil assembly 14. Here, if the bobbin 9 and the connector 12 are rattled, a force greater than the allowable stress is applied to the conductive wire 11 of the bridge shape 25 and the wire is disconnected. In addition, the bridge-like 25 of the conductive wire 11 can be connected without breaking during assembly.
There is a residual stress in the part, and it breaks in the thermal cycle. FIG. 4 shows an example of the present invention. (A) is a cross-sectional view of (b), in which a hatched portion 26 is embedded in the bobbin 9, and a portion is plate-shaped to obtain the effect of the present invention. In addition, a portion 27 to which an o-ring for securing the airtightness of the injector is attached.
Has a circular cross section.
【００１５】図５は本発明の他の一例を示す。（ａ）は
（ｂ）の断面図であり、斜線部分２６がボビン９に埋め
込まれ、本発明の効果を得るため一部に平面部２８を備
える。なお、インジェクタの気密性を確保するｏリング
が装着される部分２７の断面形状は円形になっている。FIG. 5 shows another example of the present invention. (A) is a cross-sectional view of (b), in which a hatched portion 26 is embedded in the bobbin 9 and partially provided with a flat portion 28 to obtain the effect of the present invention. The cross-sectional shape of the portion 27 to which the o-ring for ensuring the airtightness of the injector is mounted is circular.
【００１６】図６は本発明の他の一例を示す。ボビン９
に埋め込まれた斜線部分２６にはあらかじめ接着剤を塗
布してあり断面形状は円形であるが、他の発明と同様の
効果がある。なお、インジェクタの気密性を確保するｏ
リングが装着される部分２７の断面形状は円形になって
いる。FIG. 6 shows another example of the present invention. Bobbin 9
An adhesive is applied in advance to the shaded portion 26 embedded in the substrate and the cross-sectional shape is circular, but the same effect as in the other inventions can be obtained. In addition, o for ensuring the airtightness of the injector
The cross-sectional shape of the portion 27 to which the ring is attached is circular.
【００１７】[0017]
【発明の効果】本発明によれば、コネクタは導通線を巻
きつけるボビンにがたつきなく強固に固定され、インジ
ェクタ組立て時および組立て後の冷熱サイクルなどの環
境条件の変化にたいしても導通線を断線させることはな
い。According to the present invention, the connector is firmly fixed to the bobbin around which the conductive wire is wound without rattling, and the conductive wire is disconnected even when environmental conditions such as a cooling / heating cycle during and after the assembly of the injector are changed. I won't let you.
【００１８】またコネクタにｏリングを備える構造とす
ることによってインジェクタの気密性を確保できる。Further, by providing the connector with an o-ring, the airtightness of the injector can be ensured.
【図１】本発明の一実施例の噴射弁の断面図である。FIG. 1 is a sectional view of an injection valve according to an embodiment of the present invention.
【図２】本発明の噴射弁の組立て過程を説明する図で、
特に、コネクタのボビンに埋め込まれた部分の一部が平
面になっている一実施例を示す図である。FIG. 2 is a diagram for explaining an assembling process of the injection valve of the present invention;
In particular, it is a diagram showing an embodiment in which a part of the portion embedded in the bobbin of the connector is flat.
【図３】本発明の噴射弁の組立て過程を説明する図で、
ボビンに導通線を巻きつけ完了後、コネクタを折り曲げ
た図である。FIG. 3 is a view for explaining an assembling process of the injection valve of the present invention;
It is the figure which bent the connector after winding the conductive wire around the bobbin.
【図４】本発明の一実施例のコネクタ部を説明する図で
ある。FIG. 4 is a diagram illustrating a connector section according to one embodiment of the present invention.
【図５】本発明の一実施例のコネクタ部を説明する図で
ある。FIG. 5 is a diagram illustrating a connector section according to an embodiment of the present invention.
【図６】本発明の一実施例のコネクタ部を説明する図で
ある。FIG. 6 is a diagram illustrating a connector section according to an embodiment of the present invention.
１…噴射弁、２…コア、３…ヨーク、４…プランジャ、
９…ボビン、１２…コネクタ、１３…巻きつけ部、２０
…ターミナル。1 ... injection valve, 2 ... core, 3 ... yoke, 4 ... plunger,
9 ... bobbin, 12 ... connector, 13 ... winding part, 20
…Terminal.
フロントページの続き (72)発明者 相馬 正浩 茨城県勝田市大字高場字鹿島谷津2477番 地３ 日立オートモティブエンジニアリ ング株式会社内 (72)発明者 平澤 亨 茨城県勝田市大字高場2520番地 株式会 社 日立製作所 自動車機器事業部内 (72)発明者 三輪 一志 茨城県勝田市大字高場2520番地 株式会 社 日立製作所 自動車機器事業部内 (56)参考文献 特開 平４−318273（ＪＰ，Ａ) 特開 平１−313904（ＪＰ，Ａ) 特開 昭56−68237（ＪＰ，Ａ) 実開 昭60−194310（ＪＰ，Ｕ) 実開 平３−104168（ＪＰ，Ｕ) 実開 昭62−150580（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.6，ＤＢ名) F02M 51/06 F02M 51/02Continued on the front page (72) Inventor Masahiro Soma 2477 Kashima-Yatsu, Kata-shi, Ibaraki Pref.Hitachi Automotive Engineering Co., Ltd. Hitachi, Ltd. Automotive Equipment Division (72) Inventor Kazushi Miwa 2520 Oji Takaba, Katsuta-shi, Ibaraki Hitachi, Ltd. Automotive Equipment Division (56) References JP-A-4-318273 (JP, A) JP-A-1-313904 (JP, A) JP-A-56-68237 (JP, A) JP-A-60-194310 (JP, U) JP-A-3-104168 (JP, U) JP-A 62-150580 (JP, A) JP, U) (58) Field surveyed (Int. Cl. 6 , DB name) F02M 51/06 F02M 51/02
Claims (2)
付けて止める巻き付け部とこの導線に外部より電流を供
給するターミナルが接合されたターミナル接合部とから
構成されるコネクタ部を有するものにおいて、前記ター
ミナル接合部と巻き付け部がＬ字状に形成され、両者の
間のＬ字状の屈曲部が前記コイルボビンに埋め込まれて
おり、前記ターミナル接合部は軸直角断面が断面円形に
構成されその付け根の周囲にＯリングシールが装着され
ており、前記巻き付け部は断面が矩形に構成され、且つ
巻き付け部は前記ボビンに抱き着くように折り曲げられ
ている電磁式燃料噴射弁。 1. A connector comprising a winding portion for winding and stopping an end of a conductive wire wound around a coil bobbin and a terminal connecting portion to which a terminal for supplying a current from the outside to the conductive wire is connected. The terminal joining portion and the winding portion are formed in an L-shape, and an L-shaped bent portion therebetween is embedded in the coil bobbin. An electromagnetic fuel injection valve, wherein an O-ring seal is mounted around the bobbin, the winding portion has a rectangular cross section, and the winding portion is bent so as to hold the bobbin.
ボビンに埋め込まれている部分に接着剤が塗布されてい
る電磁式燃料噴射弁。 2. An electromagnetic fuel injection valve according to claim 1, wherein an adhesive is applied to a portion embedded in said coil bobbin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32397292A JP2846198B2 (en) | 1992-12-03 | 1992-12-03 | Electromagnetic fuel injection valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32397292A JP2846198B2 (en) | 1992-12-03 | 1992-12-03 | Electromagnetic fuel injection valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06173815A JPH06173815A (en) | 1994-06-21 |
| JP2846198B2 true JP2846198B2 (en) | 1999-01-13 |
Family
ID=18160694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32397292A Expired - Fee Related JP2846198B2 (en) | 1992-12-03 | 1992-12-03 | Electromagnetic fuel injection valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2846198B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001317564A (en) * | 2000-02-29 | 2001-11-16 | Sanden Corp | Electromagnetic clutch yoke |
-
1992
- 1992-12-03 JP JP32397292A patent/JP2846198B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06173815A (en) | 1994-06-21 |
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