JPH0367783U

JPH0367783U -

Info

Publication number: JPH0367783U
Application number: JP12443989U
Authority: JP
Priority date: 1989-10-24
Filing date: 1989-10-24
Publication date: 1991-07-02

Description

[Brief explanation of the drawing]

図面は実施例に係り、第１図は、コイルに励磁
電流が通電されない状態での電磁弁の断面図であ
る。また、第２図は、コイルに励磁電流が通電さ
れた状態での電磁弁の断面図である。更に第３図
Ａは、電磁弁の部分断面図、第３図Ｂ、及び第３
図Ｃは、第３図Ａの部分拡大図、第４図は、電磁
弁を用いた燃料系統図である。３……コイル、４……プランジヤ（可動磁極）
、６……固定磁極、８……第１のニードル、９…
…第１の弁体、１０……第２のニードル、１１…
…第２の弁体、１４……第１のスプリング、２３
……第２のスプリング、２４……第３のスプリン
グ、２５……第４のスプリング、２６……第５の
スプリング、３１……Ｏリング、４５……ガイド
、４６……ゴム材、４７……ゴム材、Ａ，Ｂ，Ｃ
，Ｄ，Ｅ，Ｆ……流体通路、Ｗ，Ｘ，Ｙ，Ｚ……
弁部。 The drawings relate to embodiments, and FIG. 1 is a sectional view of the solenoid valve in a state where no exciting current is applied to the coil. Further, FIG. 2 is a cross-sectional view of the solenoid valve in a state where an exciting current is applied to the coil. Furthermore, FIG. 3A is a partial sectional view of the solenoid valve, FIG.
Figure C is a partially enlarged view of Figure 3A, and Figure 4 is a fuel system diagram using a solenoid valve. 3...Coil, 4...Plunger (movable magnetic pole)
, 6... fixed magnetic pole, 8... first needle, 9...
...First valve body, 10...Second needle, 11...
...Second valve body, 14...First spring, 23
...Second spring, 24...Third spring, 25...Fourth spring, 26...Fifth spring, 31...O ring, 45...Guide, 46...Rubber material, 47... ...Rubber material, A, B, C
, D, E, F...fluid passage, W, X, Y, Z...
Benbe.

Claims

[Scope of utility model registration request]

A movable magnetic pole that is attracted to the fixed magnetic pole when the coil is excited, a first needle slidably inserted into one end of the axial center of the movable magnetic pole, and an axial center of the movable magnetic pole. A second needle is slidably inserted into the other end of the needle, and an insertion hole is formed into which the tip of the first needle is slidably inserted, and the movable magnetic pole is inserted into the fixed magnetic pole. When the movable magnetic pole is not attracted, a second gap is formed between the distal end surface of the first needle and the inner end surface of the insertion hole, while when the movable magnetic pole is not attracted, the first
A first valve body is attached to the tip of the first needle such that the tip of the needle comes into contact with the inner end surface of the insertion hole, and the tip of the second needle is slidable. An insertion hole is formed to be inserted into the movable magnetic pole, and when the movable magnetic pole is attracted to the fixed magnetic pole,
While the distal end surface of the second needle abuts the inner end surface of the insertion hole, when the movable magnetic pole is not attracted, there is a gap between the distal end surface of the second needle and the inner end surface of the insertion hole. a second valve body attached to the tip of the second needle such that a gap of 1 is formed and the stroke is shorter than the stroke of the first valve body; and the stroke position of the movable magnetic pole. a first three-way fluid passage provided with two valve parts each having a first seal part and a second seal part that are opened and closed by the first valve body in accordance with the first valve body;
the second according to the stroke position of the movable magnetic pole;
A second valve having two valve parts each having a third seal part and a fourth seal part which are opened and closed by a valve body.
a first elastic member that biases the first valve body in the direction of attraction of the movable magnetic pole to the fixed magnetic pole; and a first elastic member that biases the first valve body in the direction of attraction of the movable magnetic pole to the fixed magnetic pole; a second elastic member that biases the second valve body; a third elastic member that biases the first needle in a direction opposite to the biasing direction of the first elastic member; a fourth elastic member that urges the needle in a direction opposite to the direction in which the second elastic member is urged; and a fifth elastic member that urges the movable magnetic pole in a direction opposite to the direction in which it attracts the fixed magnetic pole. and the first
The biasing force of the elastic member is a, the biasing force of the second elastic member is b, the biasing force of the third elastic member is c, the biasing force of the fourth elastic member is d, and the biasing force of the fifth elastic member is When is e, a<e-c, a<b+d+e, and when m is the magnetic force for attracting the movable magnetic pole to the fixed magnetic pole, the respective elastic members are adjusted so that m+a>b+d+e holds. A sealing means is provided for setting a biasing force and for sealing between the valve part opened and closed by the first valve body and the valve part opened and closed by the second valve body. Solenoid valve.