JPH0432951B2 - - Google Patents
Info
- Publication number
- JPH0432951B2 JPH0432951B2 JP11363584A JP11363584A JPH0432951B2 JP H0432951 B2 JPH0432951 B2 JP H0432951B2 JP 11363584 A JP11363584 A JP 11363584A JP 11363584 A JP11363584 A JP 11363584A JP H0432951 B2 JPH0432951 B2 JP H0432951B2
- Authority
- JP
- Japan
- Prior art keywords
- wire mesh
- strainer
- manufacturing
- supply device
- mesh
- 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
Links
- 239000000446 fuel Substances 0.000 claims description 19
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
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
- F02M51/0678—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 all portions having fuel passages, e.g. flats, grooves, diameter reductions
-
- 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
- F02M61/165—Filtering elements specially adapted in fuel inlets to injector
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Filtering Materials (AREA)
- Fuel-Injection Apparatus (AREA)
Description
【発明の詳細な説明】
産業上の利用分野
この発明は、主に自動車用内燃機関（以下エン
ジンともいう）の燃料供給装置に用いられるスト
レーナの製造方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a method of manufacturing a strainer used mainly in a fuel supply device for an internal combustion engine (hereinafter also referred to as engine) for an automobile.
従来技術
従来、実開昭57−114163号公報などに開示され
た電磁燃料噴射器、あるいはその他の燃料供給装
置においては、第２図の斜視図に示されるような
金網で形成されたストレーナ２１が、燃料通路
（図示しない）の入口に挿入されている。しかし
ながら、このようなストレーナ２１は、第３図に
示すような平らな金網２２を、第４図に示すよう
なパンチ２４およびダイス２５によつて絞り加工
を施したとき、第２図および第５図にみられるよ
うに、折れ目２２ａが不規則となつて部分的に弱
い箇所２２ｂができ、網目が変形して大きくな
る。また金網２２の重なり状態が不均一になり易
く、そのため縁金具２３（第２図）のかしめ加工
が困難になり、抜け易くなるという問題があつ
た。Prior Art Conventionally, in an electromagnetic fuel injector or other fuel supply device disclosed in Japanese Utility Model Application Publication No. 57-114163, etc., a strainer 21 formed of a wire mesh as shown in the perspective view of FIG. , inserted into the inlet of a fuel passage (not shown). However, such a strainer 21 cannot be used when a flat wire mesh 22 as shown in FIG. 3 is drawn using a punch 24 and a die 25 as shown in FIG. As seen in the figure, the folds 22a become irregular, forming weak spots 22b, and the mesh becomes deformed and becomes larger. In addition, the overlapping state of the wire mesh 22 tends to be uneven, which makes it difficult to caulk the edge metal fittings 23 (FIG. 2) and makes them easy to come off.
発明の目的
この発明は上記問題点を解消するため、常に均
一に網目を成形することのできる燃料供給装置の
ストレーナの製造方法の提供を目的とする。OBJECTS OF THE INVENTION In order to solve the above-mentioned problems, it is an object of the present invention to provide a method for manufacturing a strainer for a fuel supply device that can always form a uniform mesh.
発明の構成と作用
この発明は、燃料供給装置の燃料通路の入口に
取り付けられる、金網で形成したストレーナの製
造方法であつて、前記金網はあらかじめ平らな状
態で金網の中心から放射方向に折れ目を入れてか
ら、パンチおよびダイスによつて絞り加工するこ
とによりカツプ状に成形するストレーナの製造方
法であるから、金網をカツプ状に成形したとき、
重なり状態が均一になる。Structure and operation of the invention The present invention is a method for manufacturing a strainer formed of a wire mesh, which is attached to the entrance of a fuel passage of a fuel supply device, wherein the wire mesh is in a flat state beforehand, and the wire mesh is bent in a radial direction from the center of the wire mesh. This is a strainer manufacturing method in which the strainer is formed into a cup shape by filling it with wire mesh and then drawing it with a punch and die, so when the wire mesh is formed into a cup shape,
The overlapping state becomes uniform.
実施例
以下実施例を示す図面に基づいて、この発明を
説明する。第１図は、この発明によるストレーナ
を取り付けた電磁燃料噴射器の縦断面図である。
１は筒状の強磁性体ハウジング・ケースで、中心
部に開口を有する隔壁２によつて仕切られた前部
区画１ａおよび後部区画１ｂからなる。３はバル
ブ・ハウジングで、隔壁２に接して挿入された環
状のストツパ４を介して前部区画１ａに嵌合固定
され、先端に燃料噴射口５が設けられている。６
は開閉弁で、バルブ・ハウジング３に設けられた
ガイド孔３ａに往復動可能に挿入されている。開
閉弁６の後端には可動鉄心７が結合されている。
可動鉄心７と対向して後部区画１ｂには筒状の固
定鉄心８が配置され、固定鉄心８の外周には電磁
コイル９が巻かれている。可動鉄心７と固定鉄心
８との間にはリターン・スプリング１０が挿入さ
れ、電磁コイル９に通電されていない間、開閉弁
６を付勢して燃料噴射口５を閉じている。固定鉄
心８の内部には燃料通路８ａが設けられ、燃料通
路８ａの入口にはストレーナ１１が挿入されてい
る。Embodiments The present invention will be described below based on drawings showing embodiments. FIG. 1 is a longitudinal sectional view of an electromagnetic fuel injector equipped with a strainer according to the present invention.
Reference numeral 1 denotes a cylindrical ferromagnetic housing case, which consists of a front section 1a and a rear section 1b separated by a partition wall 2 having an opening in the center. A valve housing 3 is fitted and fixed to the front section 1a via an annular stopper 4 inserted in contact with the partition wall 2, and has a fuel injection port 5 at its tip. 6
is an on-off valve, which is inserted into a guide hole 3a provided in the valve housing 3 so as to be able to reciprocate. A movable iron core 7 is coupled to the rear end of the on-off valve 6.
A cylindrical fixed core 8 is arranged in the rear section 1b facing the movable core 7, and an electromagnetic coil 9 is wound around the outer periphery of the fixed core 8. A return spring 10 is inserted between the movable iron core 7 and the fixed iron core 8, and biases the on-off valve 6 to close the fuel injection port 5 while the electromagnetic coil 9 is not energized. A fuel passage 8a is provided inside the fixed core 8, and a strainer 11 is inserted into the entrance of the fuel passage 8a.
ストレーナ１１はカツプ状態に成形された金網
１２と、その端末部にかしめ加工で取り付けられ
た縁金具１３とからなる。金網１２は、第６図に
示すように、最初に平らな状態であらかじめ金網
の中心から放射方向に折れ目１２ａを入れておい
てから、第４図に示すようにカツプ状に成形し、
端末部に縁金具１３をかしめ加工によつて取り付
ける。 The strainer 11 is made up of a wire mesh 12 formed into a cup shape, and an edge metal fitting 13 attached to the end portion of the mesh by caulking. As shown in FIG. 6, the wire mesh 12 is first made in a flat state with creases 12a radially extending from the center of the wire mesh, and then formed into a cup shape as shown in FIG.
The edge fitting 13 is attached to the terminal part by caulking.
上記の方法によつて、金網１２は折れ目１２ａ
に沿つて重なりができ、網目の大きさが変形せ
ず、強度も一様になる。 By the above method, the wire mesh 12 is formed at the crease 12a.
Overlapping occurs along the lines, the size of the mesh does not change, and the strength becomes uniform.
発明の効果
この発明は以上説明したように、燃料供給装置
の燃料通路の入口に取り付けられる、金網で形成
したストレーナの製造方法であつて、前記金網は
あらかじめ平らな状態で金網の中心から放射方向
に折れ目を入れてから、パンチおよびダイスによ
つて絞り加工することによりカツプ状に成形する
ストレーナの製造方法であるから、金網をカツプ
状に成形したとき、重なり状態が折れ目に沿つて
常に均一になり、網目の大きさが変形せず、強度
も一様なストレーナが得られる効果がある。Effects of the Invention As described above, the present invention provides a method for manufacturing a strainer formed of a wire mesh, which is attached to the entrance of a fuel passage of a fuel supply device, in which the wire mesh is flattened in advance in a radial direction from the center of the wire mesh. This strainer manufacturing method involves making creases in the wire mesh and then drawing it using punches and dies to form it into a cup shape. Therefore, when the wire mesh is formed into a cup shape, the overlapping state is always along the creases. This has the effect of providing a strainer with uniform mesh size, no deformation, and uniform strength.
第１図はこの発明によるストレーナを取り付け
た電磁燃料噴射器の縦断面図、第２図は従来のス
トレーナの斜視図、第３図イ，ロは従来のストレ
ーナの金網の展開平面図および断面図、第４図は
ストレーナの金網の絞り型の断面図、第５図イ，
ロは従来の金網の加工説明図、第６図イ，ロはこ
の発明の方法による金網の展開平面図および断面
図、第７図イ，ロはこの発明の方法による金網の
加工説明図である。
６……開閉弁、７……可動鉄心、８……固定鉄
心、８ａ……燃料通路、９……電磁コイル、１１
……ストレーナ、１２……金網、１２ａ……折れ
目。
Fig. 1 is a vertical cross-sectional view of an electromagnetic fuel injector equipped with a strainer according to the present invention, Fig. 2 is a perspective view of a conventional strainer, and Fig. 3 A and B are a developed plan view and a sectional view of the wire mesh of a conventional strainer. , Figure 4 is a cross-sectional view of the drawing die of the wire mesh of the strainer, Figure 5 A,
6B is an explanatory diagram of processing a conventional wire mesh, FIGS. 6A and 6B are developed plan views and sectional views of a wire mesh according to the method of the present invention, and FIGS. 7A and 7B are explanatory diagrams of processing a wire mesh according to the method of the present invention. . 6... Opening/closing valve, 7... Movable iron core, 8... Fixed iron core, 8a... Fuel passage, 9... Electromagnetic coil, 11
...Strainer, 12...Wire mesh, 12a...Fold.
Claims (1)
れる、金網で形成したストレーナの製造方法であ
つて、前記金網はあらかじめ平らな状態で金網の
中心から放射方向に折れ目を入れてから、パンチ
およびダイスによつて絞り加工することによりカ
ツプ状に成形することを特徴とする燃料供給装置
のストレーナの製造方法。1. A method for manufacturing a strainer formed of a wire mesh, which is attached to the entrance of a fuel passage of a fuel supply device, wherein the wire mesh is flattened in advance and creases are made radially from the center of the wire mesh, and then punched and diced. 1. A method of manufacturing a strainer for a fuel supply device, the method comprising forming a strainer into a cup shape by drawing the strainer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11363584A JPS60256551A (en) | 1984-06-02 | 1984-06-02 | Manufacture of strainer for fuel feeder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11363584A JPS60256551A (en) | 1984-06-02 | 1984-06-02 | Manufacture of strainer for fuel feeder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60256551A JPS60256551A (en) | 1985-12-18 |
| JPH0432951B2 true JPH0432951B2 (en) | 1992-06-01 |
Family
ID=14617228
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11363584A Granted JPS60256551A (en) | 1984-06-02 | 1984-06-02 | Manufacture of strainer for fuel feeder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60256551A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102937127A (en) * | 2012-11-19 | 2013-02-20 | 上海理工大学 | Precise micro strainer and production method thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT214896Z2 (en) * | 1988-10-28 | 1990-07-04 | Weber Srl | FEEDING DEVICE OF AN INTERNAL COMBUSTION ENGINE PROVIDED WITH A PERFECTED FILTER ELEMENT |
-
1984
- 1984-06-02 JP JP11363584A patent/JPS60256551A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102937127A (en) * | 2012-11-19 | 2013-02-20 | 上海理工大学 | Precise micro strainer and production method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60256551A (en) | 1985-12-18 |
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