JPH032070Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Purpose of invention] (Industrial application field) The present invention relates to a solenoid valve.

(Prior Art) A conventional solenoid valve is known as shown in Japanese Patent Application Laid-Open No. 139575/1983. As shown in FIG. 4, in order to fix the cover 2 to the casing 1 via the plate 3, a yoke 4 disposed so as to sandwich the casing 1 with the cover 2 is passed through the plate and the tip end It was fixed by caulking 4a.

(Problems to be Solved by the Invention) However, according to the method described above, the casing 1 is only sandwiched between the plate 4 and the cover 2, and is not directly fixed to the plate 4. For this reason, there is a drawback that when subjected to repeated vibrations with high acceleration from the outside, the caulking of the tip end 4a of the plate 4 loosens and the internal parts of the casing 1 are damaged.

Therefore, the technical object of the present invention is to eliminate the conventional drawbacks.

[Structure of the idea]

(Means for Solving the Problems) The technical measures taken in this invention to solve the above technical problems include a cover that forms a flow path inside, and a cover that faces the cover and forms a magnetic path inside. a solenoid that is integrally provided with the core and the plunger to open and close the flow path; a plate that is provided between the cover and the casing and is integrally fixed to the solenoid; and a plate that is magnetically connected to the core. The yoke extends along the outside of the casing toward the cover, and has a plate at one end and a yoke that is caulked and fixed to the cover at the other end.

(Operation) The above technical means operates as follows. That is,
When the solenoid is energized, the plunger is attracted to the core. This also energizes the valve body and opens the flow path.

(Example) An example of the present invention will be described based on the accompanying drawings. In FIG. 3, the casing 1 of the solenoid valve 10
A solenoid 14 formed by winding an electric coil 13 around a bobbin 12 is fixed to the inside of the solenoid 1 .
Further, on the right side of the casing 11 in the drawing, a connector 11a for connecting a power source is integrally provided in the casing 11, and a terminal 14b of the connector 11a is electrically connected to the solenoid 14. Furthermore, the core 15 is in contact with one end and the inside of the solenoid 14.
is fixed. Further, a slidable plunger 16 is disposed at a constant distance from one end of the core 15. A valve body 17 made of rubber is integrally provided on the plunger 16 by baking molding.
A plate spring 18 having a tongue (not shown) in the center is fixed to the entire outer circumference of the valve body 17, and the plate spring 18 is further attached to a protrusion 14a provided on the outer circumference of the other end of the solenoid 14. is fixed. Furthermore, a guide plate 26 is integrally provided inside the other end of the solenoid 14, facing the leaf spring 18. Further, a plate 20 is integrally provided at the other end of the solenoid 14. Furthermore, a body 19 is provided at the other end of the solenoid 14 so as to sandwich a leaf spring 18 therebetween. A flow path 22 is formed inside the body 19 . The flow path 22 communicates with ports 23 and 24, and the ports 23 and 24 communicate with the outside, and a valve seat is integrally provided in the port 23 facing the valve 17.

As shown in FIGS. 1 and 2, a U-shaped yoke 21 is provided on the outside of the casing 11 and in contact with the core 15. The tip of this yoke 21 is bifurcated, and one mounting portion 21c passes through a hole 20a provided in the plate 20.
The other mounting portion 21d passes through a hole 20b provided in the plate 20, and is further divided into two parts. One of the two forks of the mounting portion 21c is bent inward to form a caulking portion 21a, which is caulked and fixed to the plate 20. Furthermore, the other side is bent inward to form a caulked portion 21b to close the cover 19.
It is caulked and fixed to a mounting portion 19a provided in the. As a result, the casing 11 and the yoke 21 are fixed via the plate 20, and the casing 11
The base 19 is held and fixed by the yoke 21 and the mounting portion 19a. In addition, the mounting part 21d
It also has the configuration described above. Further, the caulking portion 21a can be bent outward and caulked and fixed, or the caulking portion 21a can be bent outward and fixed by caulking, or the caulking portion 21a can be bent outward and fixed by caulking.
The mounting portions 21c and 21d of the yoke 21 may be passed through the mounting portions 21c and 21d of the yoke 21 as one hole, and the plate 20 may be fixed by caulking using the caulking portion 21a as a common hole.

Next, the operation will be explained. In FIG. 1, port 23 is on the supply side and port 24 is on the discharge side.
When the solenoid 14 is not energized, the valve body 17 is brought into contact with the valve seat 25 to form a seal due to the urging force of the leaf spring 18. When the solenoid 14 is energized, the valve body 17
A plunger 16, which is integrally provided in the core 15, is attracted toward the core 15 by magnetic force. As a result, the valve body 17 and the valve seat 25 are separated from each other, so that the fluid flowing from the port 23 passes through the flow path 22 and is discharged from the port 24. At this time, the leaf spring 18 fixed to the valve body 17 and the protruding portion 14a of the solenoid 14 is displaced by the sliding of the valve body 17. Therefore, the tongue portion 18a
comes into contact with the guide plate 26. The repulsive force of the tongue portion 18a prevents the plunger 16 and the core 15 from colliding.

[Effect of idea]

The present invention includes a casing that includes a cover that forms a flow path inside, a solenoid that faces the cover and forms a magnetic path inside, a plunger, and a casing that is integrally provided with the plunger and that is connected to the flow path. a valve body for opening and closing a passage; a plate provided between the cover and the casing and integrally fixed to the solenoid; and a plate magnetically joined to the core and directed along the outside of the casing toward the cover. The solenoid valve has a U-shaped yoke with a plate at its tip and a U-shaped yoke whose tip is crimped and fixed to the cover, so that the cover, solenoid,
Since the strength for fixing the yoke is improved, the caulked portion will not loosen due to vibration and damage the solenoid, core, plunger, etc. in the casing.

[Brief explanation of drawings]

1 and 2 are external views of a solenoid valve according to the present invention, FIG. 3 is a sectional view taken along line A--A in FIG. 1, and FIG. 4 is an external view of a conventional solenoid valve. 10...Solenoid valve, 11...Casing, 12...
...Bobbin, 13...Coil, 14...Solenoid, 15...Core, 16...Plunger, 17...
... Valve body, 18 ... Leaf spring, 19 ... Cover, 20
...Plate, 21...Yoke, 21a, 21b
...Caulking part, 21c, 21d...Mounting part, 2
2... Channel, 23, 24... Port, 26... Guide plate.

Claims (1)

[Scope of utility model registration request] A casing that includes a cover that forms a flow path inside, a solenoid that faces the cover and forms a magnetic path inside, a core, and a plunger, and a valve that is provided integrally with the plunger and opens and closes the flow path. a plate disposed between the cover and the casing and integrally fixed to the solenoid; a plate magnetically joined to the core and extending along the outside of the casing toward the cover; A solenoid valve having a U-shaped yoke, with a portion of its tip fixed to a plate and the rest fixed to a cover by caulking.