JPH0332173U

JPH0332173U -

Info

Publication number: JPH0332173U
Application number: JP9265189U
Authority: JP
Priority date: 1989-08-07
Filing date: 1989-08-07
Publication date: 1991-03-28

Description

[Brief explanation of drawings]

第１図〜第６図は本考案のインジエクタの可動
部の取付け構造の実施例を示し、第１図はその一
実施例のインジエクタの全体構造を示す縦断面図
、第２図はその要部の可動部を取り出して示した
拡大断面図、第３図は第２図のＡ−Ａ線断面図、
第４図は第２図のＢ−Ｂ線断面図、第５図は第２
図のＣ−Ｃ線断面図、第６図は弁体の後部の側面
図、第７図は第６図のＤ矢視図、第８図は従来の
可動部の取付け構造を示す断面図である。１…ハウジング、３…弁ハウジング、３ａ…ガ
イド孔、３ｂ…弁座、３ｃ…弁穴、６…弁体、７
…可動コア、７ａ…前端面、１０…ガイド鍔、１
０ａ…ガイド面部、１１…シール面、１３…円孔
、１３ａ…圧入孔部、１５…凹溝、１６…かしめ
突起、１８…圧入部、１９…鍔体、２４…電磁コ
イル部、２５…固定コア、２７…戻しばね、３０
…燃料通路。 1 to 6 show an embodiment of the mounting structure of the movable part of the injector of the present invention, FIG. 1 is a longitudinal sectional view showing the overall structure of the injector of one embodiment, and FIG. 2 is the main part thereof. 3 is an enlarged sectional view showing the movable part taken out, FIG. 3 is a sectional view taken along the line A-A in FIG. 2,
Figure 4 is a sectional view taken along line B-B in Figure 2, and Figure 5 is a cross-sectional view of Figure 2.
6 is a side view of the rear part of the valve body, FIG. 7 is a view taken in the direction of arrow D in FIG. 6, and FIG. 8 is a sectional view showing the conventional mounting structure of the movable part. be. 1... Housing, 3... Valve housing, 3a... Guide hole, 3b... Valve seat, 3c... Valve hole, 6... Valve body, 7
...Movable core, 7a...Front end surface, 10...Guide collar, 1
0a...Guide surface part, 11...Sealing surface, 13...Circular hole, 13a...Press-fitting hole part, 15...Concave groove, 16...Clinching projection, 18...Press-fitting part, 19...Flame body, 24...Electromagnetic coil part, 25...Fixing Core, 27...Return spring, 30
...Fuel passage.

Claims

[Claims for Utility Model Registration] A valve housing having a valve hole and a valve seat at the tip and a guide hole passing through the shaft center; and a sealing surface that abuts the valve seat at the tip and protruding side by side. a valve body that is slidably inserted into the guide hole by a guide surface portion formed on the outside of the provided guide flange and is normally biased toward the valve seat by a return spring; passing through the shaft center portion; a movable core having a substantially cylindrical shape, into which the rear end of the valve body is press-fitted and coupled; facing the rear end surface of the movable core at a constant distance and via the return spring; a fixed core arranged in the same direction as the fixed core and having a fuel passage passing through its axial center; an electromagnetic coil part arranged to surround the fixed core; a housing arranged outside the electromagnetic coil part; an injector for an internal combustion engine, in which a magnetic path is formed by at least the movable core, the fixed core, and the housing, and in which the valve body is opened and pressurized fuel is injected by an opening signal applied to the electromagnetic coil; A groove narrower in width than the circular hole is formed in the front end surface of the core, a caulking projection is formed facing the groove and protrudes from the front end surface, and a rear portion of the valve body is connected to the movable core. The movable core has an outer surface that is press-fitted into the circular hole partially as a press-fitting surface, and a flat collar body that is stretched in the radial direction from the outer surface and that fits into the groove of the movable core. A mounting structure for a movable part of an injector, characterized in that the flange body of the valve body is caulked and fixed by a caulking projection of the movable core.