JPS5965558A - Assembling method of solenoid fuel injection valve - Google Patents
Assembling method of solenoid fuel injection valveInfo
- Publication number
- JPS5965558A JPS5965558A JP57176280A JP17628082A JPS5965558A JP S5965558 A JPS5965558 A JP S5965558A JP 57176280 A JP57176280 A JP 57176280A JP 17628082 A JP17628082 A JP 17628082A JP S5965558 A JPS5965558 A JP S5965558A
- Authority
- JP
- Japan
- Prior art keywords
- yoke
- nozzle
- caulking
- small
- 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.)
- Granted
Links
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
- 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
- F02M51/0675—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 valve body having cylindrical guiding or metering portions, e.g. with fuel passages
-
- 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
- F02M51/08—Injectors peculiar thereto with means directly operating the valve needle specially for low-pressure fuel-injection
Abstract
Description
【発明の詳細な説明】
本発明は電磁式燃料噴射弁の組立方法に係υ〜特にエア
ギャップの変化を伴なうことのない組立方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of assembling an electromagnetic fuel injection valve, and particularly to an assembling method that does not involve a change in air gap.
従来の電磁式燃料噴射弁の第１図に示すように細長い構
造のものとなっている。これは、電磁駆動部を内蔵する
ヨーク本体１と、この一端面から突出される小径ヨーク
部２とを備えている。前記電磁駆動部はコイル３とその
中心部に挿通されているコア４とを有し、またコイル３
の例示によって往復動されるプランジャ５を備えている
。一方、前記小径ヨーク部２の内部にはノズル６が装着
されておシ、ノズル６には前記プランジャ５にロッド７
を介して結合されている。従って、電磁式燃料噴射弁の
動作は、コイル３への断続的な通電によシブランジャ５
が往復動され、これによって弁体８がノズル６の開閉を
行なうものである。As shown in FIG. 1 of a conventional electromagnetic fuel injection valve, it has an elongated structure. This includes a yoke main body 1 containing an electromagnetic drive section, and a small diameter yoke section 2 protruding from one end surface of the yoke main body 1. The electromagnetic drive section has a coil 3 and a core 4 inserted through the center thereof, and the coil 3
The plunger 5 is provided with a plunger 5 that is reciprocated. On the other hand, a nozzle 6 is installed inside the small diameter yoke portion 2, and a rod 7 is attached to the plunger 5 in the nozzle 6.
are connected via. Therefore, the operation of the electromagnetic fuel injection valve is performed by intermittent energization of the coil 3.
is reciprocated, whereby the valve body 8 opens and closes the nozzle 6.
ところで、このような噴射弁のノズル６はヨーク本体１
の外周部に設けた溝の段部９を支持し、加締め工具によ
シ小径ヨーク部２の先端位置に設けた加締部１０を加締
めることで固定されている。By the way, the nozzle 6 of such an injection valve is connected to the yoke body 1.
The small-diameter yoke part 2 is fixed by supporting a stepped part 9 of a groove provided on the outer periphery of the yoke part 2 and by crimping a crimping part 10 provided at the tip of the small diameter yoke part 2 using a crimping tool.
このような方法では、ヨーク本体１のプランジャ５に対
する外周部分１１に生じる加締め時の曲げモーメントは
比較的小さく、その結果変形も小さく、プランジャ５と
コア４との間に形成されたエアギャップＧを変化させた
シすることは少ない。In such a method, the bending moment generated at the outer peripheral portion 11 of the yoke body 1 relative to the plunger 5 during crimping is relatively small, and as a result, deformation is also small, and the air gap G formed between the plunger 5 and the core 4 is reduced. There are few changes that can be made.
しかしながら、前記従来の細長い構造の電磁式燃料噴射
弁では、ヨーク本体１とコア４の距離が短かく、またコ
イル３と吸引部が遠くなるため、プランジャ５の吸引に
寄与しない洩れ磁束が多くなシ、吸引力が小さくなって
弁体８の応答性が悪くなる欠点がある。このため、現在
では、第２図に示すようなヨーク本体１の外径を大きく
し全長を短かくした形式の燃料噴射弁を用いるようにな
っている。第２図には第１図と同様な構成部材には同一
番号を符して説明を省略する。However, in the conventional electromagnetic fuel injection valve having an elongated structure, the distance between the yoke body 1 and the core 4 is short, and the coil 3 is far from the suction part, so there is a large amount of leakage magnetic flux that does not contribute to the suction of the plunger 5. However, there is a drawback that the suction force becomes small and the responsiveness of the valve body 8 deteriorates. For this reason, fuel injection valves of the type shown in FIG. 2, in which the outer diameter of the yoke body 1 is increased and the overall length is shortened, are now used. In FIG. 2, constituent members similar to those in FIG. 1 are denoted by the same numbers, and explanations thereof will be omitted.
ところが、このようなヨーク本体１の外径が大きい形式
の噴射弁では、ノズル６の取シ付けに際し、従来の同じ
方法すなわちヨーク本体１の外周の７ランジ状部１２を
支持して加締部１０の加締めを施すと次のような問題を
生じる。ヨーク本体１の外径が大きく、それに伴って７
ランジ状部１２の外径も大きくなる。これを受け、従来
とほぼ同様の大きさの小径ヨーク部２に対しノズル６の
装着後加締部１０を加締めると、ヨーク本体１のプラン
ジャ５に対する外周部１１に動く曲げモーメントが極め
て大きくなる。従って、加締め作業に伴って、プランジ
ャ５が吸引された時にコア４に接触しないように設けら
れたエアギャップＧが大きく変化してしまい、当該燃料
噴射弁の噴射精度を悪化させてしまうものである。すな
わち加締め前に要求バンドに入るようにセントしても、
加締め後にはエアギャップＧの変化によシ要求バンドか
ら外れてしまう欠点があった。このため、従来の組立方
法を適用した燃料噴射弁では設定値通シの作動が行なわ
れないという問題が生じるものである。However, in such an injection valve where the outer diameter of the yoke body 1 is large, when installing the nozzle 6, the same method as the conventional method is used, that is, supporting the 7 flange-shaped portion 12 on the outer periphery of the yoke body 1 and tightening the crimped portion. If 10 degrees of caulking is applied, the following problems will occur. The outer diameter of the yoke body 1 is large, and accordingly, the diameter of the yoke body 1 is large.
The outer diameter of the flange-shaped portion 12 also becomes larger. In response to this, when the crimping part 10 is crimped after the nozzle 6 is attached to the small-diameter yoke part 2 that is approximately the same size as the conventional one, the bending moment that moves toward the outer peripheral part 11 of the yoke body 1 relative to the plunger 5 becomes extremely large. . Therefore, as a result of the crimping work, the air gap G, which is provided to prevent the plunger 5 from coming into contact with the core 4 when it is sucked, changes significantly, which deteriorates the injection accuracy of the fuel injection valve. be. In other words, even if the cent is placed within the required band before crimping,
After crimping, there is a drawback that the air gap G changes and the bolt deviates from the required band. Therefore, in a fuel injection valve to which the conventional assembly method is applied, a problem arises in that set value communication is not performed.
本発明の目的は、ノズルをヨークに加締める際のヨーク
の変形を極力少なくシ、加締め前後で燃料噴射量が変化
しない電磁式燃料噴射弁の組立方法を提供することにあ
る、。An object of the present invention is to provide a method for assembling an electromagnetic fuel injection valve that minimizes deformation of the yoke when crimping a nozzle to the yoke, and does not change the fuel injection amount before and after crimping.
上記目的を達成するために、本発明に係る組立方法は、
特に小径ヨーク部の外周に円周溝状の受は部を形成し、
この受は部に加締め支持具を装置して支持させ、ノズル
装着後に筒状加締め具によシ小径ヨーク部先端をノズル
外周段部に対し圧着加締めて組み立てるように構成した
ものである。In order to achieve the above object, the assembly method according to the present invention includes:
In particular, a circumferential groove-shaped receiving part is formed on the outer periphery of the small diameter yoke part,
This receiver is constructed so that it is supported by a crimping support, and after the nozzle is installed, the tip of the small diameter yoke is crimped and crimped against the outer peripheral step of the nozzle using a cylindrical crimping tool. .
このような構成によシ、小径ヨーク部先端の加締部全加
締める作業はノズル外周部の受は部で支持させるので、
曲げモーメントは極めて小さく、プランジャとコア間の
エアギャップに影響を与えることは程んどなくなるもの
である。従って加締め前後の燃料噴射量特性の変化をき
たすことなく組み立てを完了させることができる。With this configuration, the work of fully tightening the caulking part at the tip of the small diameter yoke part is supported by the support part on the outer periphery of the nozzle.
The bending moment is extremely small and has little effect on the air gap between the plunger and the core. Therefore, assembly can be completed without causing any change in the fuel injection amount characteristics before and after crimping.
以下に本発明の一実施例を第２図及び第３図によシ説明
する。An embodiment of the present invention will be explained below with reference to FIGS. 2 and 3.
まず、組立対称としての電磁式燃料噴射弁は大径のヨー
ク本体１を備えており、この内部に電磁駆動部全内蔵し
ている。電磁駆動部はジイル３とその中心に挿通された
コア４とを備え、更にプランジャ５を往復移動可能に備
えている。このようなヨーク本体１のプランジャ５が位
置する側の端面には小径ヨーク部２が突設されており、
これにノズル６を装着するようにしている。ノズル６に
は燃料通路内に球状の弁体８を備え、これを前記プラン
ジャ５にロッド７を介して結合している。First, the electromagnetic fuel injection valve to be assembled has a large-diameter yoke body 1, and the electromagnetic drive section is entirely housed inside the yoke body 1. The electromagnetic drive section includes a jill 3 and a core 4 inserted through the center thereof, and further includes a plunger 5 capable of reciprocating movement. A small diameter yoke portion 2 is protruded from the end surface of the yoke body 1 on the side where the plunger 5 is located.
A nozzle 6 is attached to this. The nozzle 6 is provided with a spherical valve body 8 in the fuel passage, which is connected to the plunger 5 via a rod 7.
従って、コイル３への断続的通電によシブランジャ５を
介し弁体８が燃料通路の開閉をなすものである。Accordingly, by intermittent energization of the coil 3, the valve body 8 opens and closes the fuel passage via the sieve plunger 5.
このような燃料噴射弁を組み立てるに際し、ノズル６の
小径ヨーク部２への組み立ては次のようになすものであ
る。すなわち、ノズル６の外周に対応する小径ヨーク部
２の外周部には円周溝状の受は部２０を形成する。この
受は部２０はヨーク本体１と小径ヨーク部２とからなる
ヨークを：成形する除に同時に設ければよい。そして、
小径ヨーク部２の内部には弁体８の往復動を規制するス
トッパ２１をプランジャ５と共に挿入し、ノズル６を装
着する。ノズル６は小径ヨーク部２の先端から突出され
るものであるが、小径ヨーク部２への装着部分はやや大
径とされておシ、その端部に小径ヨーク部２の先端に設
けた加締部１ｏｆｒ：加締めることによって固定するも
のである。この加締部１０の固足作業は次のように行な
う。When assembling such a fuel injection valve, the nozzle 6 is assembled to the small diameter yoke portion 2 as follows. That is, a circumferential groove-shaped receiving portion 20 is formed on the outer periphery of the small diameter yoke portion 2 corresponding to the outer periphery of the nozzle 6 . This receiving portion 20 may be provided at the same time as the yoke consisting of the yoke body 1 and the small diameter yoke portion 2 is being molded. and,
A stopper 21 for regulating the reciprocating movement of the valve body 8 is inserted into the small diameter yoke portion 2 together with the plunger 5, and a nozzle 6 is attached thereto. The nozzle 6 protrudes from the tip of the small-diameter yoke section 2, but the part where it is attached to the small-diameter yoke section 2 has a slightly larger diameter. Tightening part 1ofr: It is fixed by caulking. This fixing work of the caulking portion 10 is performed as follows.
まず、小径ヨーク部２の外周に設けた受は部２０に対し
、／Ｊｕ締め工具の支持台である割型２２を装着する。First, the split mold 22, which is a support for the /Ju tightening tool, is attached to the receiver part 20 provided on the outer periphery of the small diameter yoke part 2.
そして、第３図に示す如く、ノズル６を装着した後にノ
ズルが十分挿通可能な円筒状加締め工具２３加締部１０
に突当てるものである。As shown in FIG. 3, after the nozzle 6 is installed, the cylindrical crimping tool 23 has a crimping part 10 through which the nozzle can be fully inserted.
It is something that hits.
係る状態から加締め工具２３に対し１．５〜１．８を程
度の押圧力を加え、ノズル６の段部に対し小径ヨーク部
２の先端を加締めるものである。In this state, a pressing force of approximately 1.5 to 1.8 is applied to the crimping tool 23 to crimp the tip of the small diameter yoke portion 2 against the stepped portion of the nozzle 6.
このような組立方法によれば、大径のヨーク本体１の外
周にて加締め作用力を受けることなく、径の小さい小径
ヨーク部２の外周部で受けるようにしているので、噴射
弁中心軸からの割型２２による支持位置と工具２３によ
る押圧力の作用位置との差が程んどなくなシ、これにょ
ジョーク本体１内のプランジャ５の外周部分１１に加わ
る曲げモーメントが極めて小さくなる。従って、エアギ
ャップＧの変化も最小に押えることが可能となシ、加締
め前後の噴射量特性の変化も少なくなるものである。こ
の結果、組み立て前の設計値と組み立て後の実測値のず
れがなくなシ要求通りの精度とすることができる。According to this assembly method, the crimping force is not received on the outer periphery of the large-diameter yoke body 1, but is received on the outer periphery of the small-diameter yoke portion 2, which has a small diameter. The difference between the supported position by the split die 22 and the position at which the pressing force is applied by the tool 23 is almost eliminated, so that the bending moment applied to the outer peripheral portion 11 of the plunger 5 in the joke body 1 becomes extremely small. Therefore, it is possible to minimize the change in the air gap G, and the change in the injection quantity characteristics before and after crimping is also reduced. As a result, there is no difference between the design value before assembly and the actual value after assembly, and the required accuracy can be achieved.
なお、小径ヨーク部２に設けた受は部２０は加締め作用
力を受けることが可能であればよく、形状や寸法の制限
はない。Note that the receiving portion 20 provided on the small-diameter yoke portion 2 only needs to be able to receive the crimping force, and there are no restrictions on shape or size.
以上説明したように、本発明に係る燃料噴射弁の組立方
法によれば、ノズＮをヨークに加締める際のヨーク変形
を小さくすることができ、加締め前後で燃料噴射量特性
が変化することを防止することができるという侵れた効
果を奏する。As explained above, according to the method for assembling a fuel injection valve according to the present invention, yoke deformation when crimping the nozzle N to the yoke can be reduced, and the fuel injection amount characteristics change before and after crimping. It has the effect of being able to prevent damage.
第１図は従来の電磁式燃料噴射弁の構造を示す断面図、
第２図は受は部を設けた噴射弁の構造を示す断面図、第
３図は加締め作業状態を示す断面図である。
１・・・ヨーク本体、２・・・小径ヨーク部、３・・・
コイル、５・・・プランジャ、６・・・ノズル、８・・
・弁体、１０・・・訓締部、２０・・・受は部、２２・
・・割型、２３・・・加締篠 １ 巳
第 ３ 目Figure 1 is a sectional view showing the structure of a conventional electromagnetic fuel injection valve.
FIG. 2 is a sectional view showing the structure of an injection valve provided with a receiver, and FIG. 3 is a sectional view showing a crimping operation state. 1...Yoke body, 2...Small diameter yoke part, 3...
Coil, 5... Plunger, 6... Nozzle, 8...
・Valve body, 10... Training section, 20... Receiving section, 22.
・・・Split type, 23...Kajime Shino 1 Snake 3rd
Claims (1)
蔵しているヨーク本体の一端面から弁体収容のノズルを
装着する小径ヨーク部を突出させ、当該小径ヨーク部の
先端縁をノズル外周に設けた段部に加締めて組み立てる
電磁式燃料噴射弁の組立方法において、前記小径ヨーク
部の外周に円周溝状の受は部を形成し、この受は部に加
締め支持具を装着して支持させ、ノズル装着後に筒状加
締め具によシ小径ヨーク部先端をノズル外周段部に対し
圧着加締めて組み立てることを特徴とする電磁式燃料噴
射弁の組立方法。1. A small-diameter yoke portion into which a nozzle containing a valve body is attached is protruded from one end surface of the yoke body that houses an electromagnetic drive unit consisting of a coil, a plunger, etc., and the tip edge of the small-diameter yoke portion is provided on the outer periphery of the nozzle. In the method of assembling an electromagnetic fuel injection valve by crimping the step part, a circumferentially grooved receiver part is formed on the outer periphery of the small diameter yoke part, and this receiver is supported by attaching a crimping support to the part. A method for assembling an electromagnetic fuel injection valve, characterized in that after the nozzle is installed, the tip of the small-diameter yoke portion is crimped and crimped against the outer circumferential step of the nozzle using a cylindrical crimping tool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57176280A JPS5965558A (en) | 1982-10-08 | 1982-10-08 | Assembling method of solenoid fuel injection valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57176280A JPS5965558A (en) | 1982-10-08 | 1982-10-08 | Assembling method of solenoid fuel injection valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5965558A true JPS5965558A (en) | 1984-04-13 |
| JPS6127581B2 JPS6127581B2 (en) | 1986-06-26 |
Family
ID=16010816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57176280A Granted JPS5965558A (en) | 1982-10-08 | 1982-10-08 | Assembling method of solenoid fuel injection valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5965558A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63111280A (en) * | 1986-10-29 | 1988-05-16 | Hitachi Ltd | Manufacture for solenoid operated fuel injection valve device |
| WO1995022476A1 (en) * | 1994-02-18 | 1995-08-24 | Kelsey-Hayes Company | Vehicular anti-lock brake system control unit, hydraulic control valve, and method of making same |
-
1982
- 1982-10-08 JP JP57176280A patent/JPS5965558A/en active Granted
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63111280A (en) * | 1986-10-29 | 1988-05-16 | Hitachi Ltd | Manufacture for solenoid operated fuel injection valve device |
| WO1995022476A1 (en) * | 1994-02-18 | 1995-08-24 | Kelsey-Hayes Company | Vehicular anti-lock brake system control unit, hydraulic control valve, and method of making same |
| GB2301409A (en) * | 1994-02-18 | 1996-12-04 | Kelsey Hayes Co | Vehicular anti-lock brake system control unit,hydraulic control valve,and method of making same |
| GB2301409B (en) * | 1994-02-18 | 1998-06-10 | Kelsey Hayes Co | Control valve for vehicle anti-lock brake system and method of making same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6127581B2 (en) | 1986-06-26 |
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