JPS589970U

JPS589970U - electromagnetic fuel injection valve

Info

Publication number: JPS589970U
Application number: JP10398981U
Authority: JP
Inventors: 桃野　正吉; 正美永野
Original assignee: 株式会社日立製作所
Priority date: 1981-07-15
Filing date: 1981-07-15
Publication date: 1983-01-22

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

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図は旋回部材の拡大図、第３図は開弁時、閉弁時
の可動部の様子を示す図、第４図は従来のプランジャと
ロッドの加締め方法を示す図、第５図は本考案のロッド
とプランジャの加締め方　　　□法を示す図である。１・・・・・・ケース、２・・・・・・ヨーク、３・・
・・・・コイル、６・・・・・・スプリング、８・・・
・・・・・田ツド、９・・・・・・ボール弁、１０・・
・・・・ノズル、１１・・・・・・シート面、１２・・
・・・・ストッパ、１３・・・・・・オリフィス、１４
・・・・・・燃゛料通路、１５・・・・・・エア抜き通
路ζ（１）、１６・・・・・・エア抜き通路（２）、１
７・・・・・・円周溝、１８・・・・・・ガイド面、１
９・・・・・・ツユエルニップル、２０・・・・・・フ
ィルタ（１）、２１・・・・・・フィルタ（２）、２２
・・・・・・旋回部材、２３・・・・・・旋回溝、２４
・・・・・べぼみ、２５・・・・・・環状溝、２６・・
・・・・底部。Figure 1 is a sectional view showing the structure of a conventional electromagnetic fuel injection valve, Figure 2 is an enlarged view of the rotating member, Figure 3 is a diagram showing the state of the movable parts when the valve is opened and closed, FIG. 4 is a diagram showing a conventional method of crimping a plunger and a rod, and FIG. 5 is a diagram showing a method of crimping a rod and a plunger according to the present invention. 1...Case, 2...Yoke, 3...
...Coil, 6...Spring, 8...
...Tatsudo, 9...Ball valve, 10...
... Nozzle, 11 ... Seat surface, 12 ...
... Stopper, 13 ... Orifice, 14
...Fuel passage, 15... Air vent passage ζ (1), 16... Air vent passage (2), 1
7... Circumferential groove, 18... Guide surface, 1
9... Tsuyuel nipple, 20... Filter (1), 21... Filter (2), 22
......Swivel member, 23...Swivel groove, 24
・・・・・・Beg, 25・・・Annular groove, 26...
····bottom.

Claims

[Claims for Utility Model Registration] 1. A magnetic case surrounding an excitation coil, a core located at the center of the excitation coil and having one end in contact with the case;
The case and the plunger that reciprocates in the axial direction of the core constitute a magnetic circuit, and the fuel flows through a plurality of passages opened toward a circumferential groove provided between the guide portion of the inner diameter of the nozzle and the conical seat surface. In an electromagnetic fuel injection valve in which a turning force is applied to inject after passing through a gap between a ball valve and a conical seat surface which are integrally attached by the plunger and rod, an annular groove is formed in the plunger to form a neck part. 1. An electromagnetic fuel injection valve characterized in that after inserting or press-fitting a rod provided with the plunger, the bottom of the annular groove is locally deformed to integrate the plunger and the rod. 2. The electromagnetic fuel injection valve according to claim 4, paragraph 1, characterized in that the rod is inserted into the plunger by applying a gasoline-resistant adhesive.