KR101529267B1 - Operating part structure of air passage change in solenoid valve - Google Patents

Abstract

SUMMARY OF THE INVENTION It is an object of the present invention to provide a structure in which there is no air leakage during operation of an air pressure of a solenoid valve and a reliable and accurate conversion operation of the air flow path is possible. The main constituent of the present invention is that in the structure of the solenoid valve flow path switching operation portion including the cover and the parts of the packing guide in the air flow path portion 1 of the solenoid valve, the packing guide 44 has a structure And the cover 20 is provided with an insertion groove 50 for receiving the insertion portion 47. The insertion portion 47 is provided with two to six And the insertion groove 50 of the cover 20 is formed in a shape corresponding to the shape of the channel 20 of the cover 20. [ 51 is formed in an annular shape around the cover 20, and an insertion protrusion 40 is formed on the outer periphery of the cover 20 so as to be fixed in the body of the air flow path view 1

Description

 [0001] The present invention relates to a solenoid valve,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a flow path switching operation portion of a solenoid valve operated by air pressure.

[Patent Document 1] Patent Publication No. 10-2012-0113889 (Published on October 16, 2012)

[Patent Document 2] Patent Publication No. 10-2006-0050030 (Published May 19, 2006)

[Patent Document 3] Utility model registration 20-0303594 (Registered on January 27, 2003)

In the prior art case, the packing guide is provided in a simple contact with the cover. When the packing guide is received, the packing guide is stuck or lifted so that the packing guide comes in close contact with the inside of the air passage portion 1, Loss occurs.

That is, even though the air passage is formed in a narrow area, the air pressure to be pressurized is a high pressure, so that the leakage of the air pressure is large. Which causes problems that the solenoid valve can not exhibit satisfactory performance and causes an output loss due to air leakage.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide a structure in which there is no air leakage during operation of air pressure and a reliable and accurate conversion operation of an air flow path is possible.

Further, the present invention provides a structure in which, when a packing guide receives an air compressing force, a structure in which a correct channel conversion is performed without leaning or leaning of a packing guide and a satisfactory performance of a solenoid valve can be achieved without loss of air pressure is provided. Have the purpose of

The main constituent of the present invention is that in the structure of the solenoid valve flow path switching operation portion including the cover and the parts of the packing guide in the air flow path portion 1 of the solenoid valve, the packing guide 44 has a structure And the cover 20 is provided with an insertion groove 50 for receiving the insertion portion 47. The insertion portion 47 is provided with two to six And the insertion groove 50 of the cover 20 is formed in a shape corresponding to the shape of the channel 20 of the cover 20. [ 51 is characterized in that the cover 20 is formed in an annular shape and an insertion protrusion 40 is formed on the outer periphery of the cover 20 so as to be fixed in the body of the air flow path portion 1

According to the configuration of the present invention, there is no air leakage during operation of the air pressure of the solenoid valve, and reliable and accurate conversion operation of the air flow path is possible.

In addition, the present invention provides a structure in which, when the packing guide receives an air compressing force, a precise passage conversion is performed without leaning or lifting of the packing guide, and a satisfactory performance of the solenoid valve can be achieved without loss of air pressure.

1 is a cross-sectional view of a solenoid valve according to the present invention.
2 is a perspective view of a structure of a cover according to the present invention.
3 is a perspective view of a packing guide according to the present invention.

Hereinafter, the present invention will be further described with reference to the accompanying drawings

1 is a view for explaining the present invention

As shown in the drawing, the operation of the air pressure will be described first. When air is introduced through the input unit 41 and electricity is applied through the "a" portion at this time, the solenoid coil 45 is electromagnetized, ) To the right.

The packing guide 44 in contact with the front end of the pressing member 46 is also pushed to the right so that the flow path of the output portion 42 is opened and the output of air pressure to the output portion 42 through the flow path of the cover 20 . That is, due to the forward and backward movement of the pressing member 46 in accordance with the application of electric power, the flow path of the air pressure is changed by the movement of the packing guide 44 to the left and right by the action that the flow path to the exhaust part 43 opens and closes .

When the output of the air pressure is not operated by closing the output section 42, the exhaust operation to the exhaust section 43 is performed so that an air flow path is formed in the exhaust section 43 to exhaust the exhaust gas. The packing guide 44 is a part for performing such a conversion operation of the flow path

The present invention improves the structure of the conventional packing guide and the cover, thereby eliminating the loss of hydraulic pressure and the incorrect operation of the packing guide.

As shown in the figure, the packing guide 44 according to the present invention has a leading end protruded toward the insertion portion 47 and a long contact portion 48 formed at the rear.

The inserting portion 47 is provided by 2 to 6 in the circumferential direction. However, it is also possible to install more than the above number. If the number of the packing guides 44 is less than 2, the packing is weak in structure, and if the number of the packing guides is more than 6, the packing guide 44 may be difficult to machine. The reason for forming the insertion portion 47 to protrude is to insert the insertion portion 47 into the insertion groove 50 of the cover 20 shown in Fig.

The contact portion 48 constituted at the rear side is contacted by the urging member 46 and pushed or retracted.

The insertion portion 47 has an opening 49 cut circumferentially. The reason why the opening 49 is formed is that if the opening 49 is not simply constituted by a cylindrical shape, insertion into the insertion groove 50 can not be performed smoothly. That is, the forward and backward movement of the packing guide 44 can not be smoothly performed.

3, the cover 50 has an insertion groove 50 formed circumferentially on the outer periphery of the flow passage 51 so that the insertion portion 47 of the packing guide 44 can be inserted. In this case, even if the packing guide 44 is moved forward and backward, the packing guide 44 does not move away from the position, and an accurate and smooth forward and backward movement is performed. In other words, the insertion groove 50 serves to catch and guide the insertion portion 47 of the packing guide 44, thereby assuring the correct operation of the packing guide 44, Prevent operation.

Although the insertion groove 50 formed in the cover 20 does not necessarily have to be a circular groove, it is preferable that the circular groove is structurally smooth.

On the other hand, on the outer periphery of the cover 20, the press-in projections 40 are formed on the front and rear sides. The press-fit projection 40 makes a firm fixation in the air passage portion 1. [ The indentation protrusion may be a protrusion for fixing the indentation by forced indentation, or may be configured to be screwed to replace the protrusion.

According to the above arrangement, the compressed air of the air pressure flowing into the input unit 41 is very pressurized, so that when the packing guide acts on the packing guide which is a small part, the packing guide can not be operated at the position, However, according to the structure of the present invention, such a problem can be solved.

1 air passage portion 20 cover
40 indentation projection 41 input part
42 Outputs 43 times Donation
44 Packing guide 45 Solenoid valve
47 insertion portion 48 contact portion
49 opening 50 insertion groove
51 Euro

Claims (5)

In the structure of the passage switching operation portion of the solenoid valve including the components of the cover and the packing guide in the air passage portion 1 of the solenoid valve,
The packing guide 44 is formed with an insertion portion 47 having a protruding structure at its tip and the cover 20 has an insertion groove 50 for receiving the insertion portion 47,
The left and right side portions of the insertion portion 47 are formed with concave openings 49,
The insertion groove 50 of the cover 20 is formed in an annular shape around the flow path 51 of the cover 20,
Wherein an insertion protrusion (40) is formed on the outer periphery of the cover (20) and is fixed in the body of the air flow path portion (1).
delete delete delete delete

Images