JPH0543330Y2 - - Google Patents

Description

[Detailed Description of the Invention] a. Field of Industrial Application The present invention relates to a quick release valve, and more specifically, to the structure of an air passage for applying pressure to a valve body.

b. Prior Art A quick release valve is disposed, for example, between a brake chamber of an air brake circuit, and discharges air from the brake chamber to the outside without passing through the brake valve when the brake is released.
This is adopted to release the brake quickly.

Figures 5 through 7 show such conventional quick release valves.

Housing 2 of this quick release valve 1
As shown in FIG. 5, it has an input port 2a that communicates with the brake valve, an output port 2b that communicates with the brake chamber, and an exhaust port 2c that communicates with the outside (atmosphere). are doing. On the other hand, a valve body 3 is disposed between each of these ports 2a, 2b, and 2c, and when the brake valve is not in operation, the flange portion 3a of the valve body 3 is connected to the input port as shown in FIG. The columnar portion 3b abuts against the opening periphery of the outlet 2a to close the input port 2a, and the columnar portion 3b comes into contact with the opening periphery of the outlet 2c to close the outlet 2c.

And with this quick release valve 1,
When the brake valve is operated and compressed air is supplied to the input port 2a, the compressed air pushes down the flange portion 3a of the valve body 3 and flows into the output port 2b, as shown in FIG. It reaches the brake chamber via output 2b. When the pressure at the output port 2b reaches a certain level relative to the pressure at the input port 2a, the flange portion 3a of the valve body 3 returns to the state shown in FIG. 5. When the brake valve is released from the operating force in such a brake operating state, the compressed air at the input port 2a is discharged from the brake valve to the outside, so the compressed air at the output port 2b is
The valve body 3 is pushed down to cause the columnar portion 3b to move away from the opening periphery of the exhaust port 2c, as shown in FIG. 7, and exit to the outside through the exhaust port 2c. And output port 2b
When the pressure decreases, the valve body 3 returns to the state shown in FIG. 5 again.

c Problems to be solved by the invention By the way, in the above quick release valve 1, the output port 2 is provided on the lower surface of the flange portion 3a of the valve body 3.
An air passage must be formed for the compressed air of b.

Therefore, in the conventional quick release valve 1, as shown in FIGS. 8 and 9, the valve body 3
A sleeve 4 fitted to reinforce the columnar part 3b, and a retainer 5 for urging the valve body 3.
A collar 6 is interposed between the collar 6 and the cylindrical portion 5a, and a notch 6a formed in the collar 6 forms an air passage 7.

As shown in FIG. 8, this collar 6 is manufactured by forming the outer shape and tongue portion 6b by punching, and by bending the tongue 6b by bending.

In this way, the conventional quick release valve 1
Since the air passage 7 has a complicated structure, the manufacturing cost is high.

Therefore, an object of the present invention is to provide an inexpensive quick release valve by reducing the number of collars.

d. Means for solving the problem In the quick release valve of the present invention, a valve body having a columnar part in the center and a flange part on the upper part of the columnar part is connected to the input port, output port, and exhaust port of the valve housing. A cylindrical part of a retainer which is arranged in relation to each other and has a cylindrical part in the center and a flange part on the upper part is fitted into the columnar part of the valve body, and between the flange part of the retainer and the valve housing. A spring is interposed in the valve body, and the valve body is biased toward the input port through the retainer, and the input port is closed by the valve body. When compressed air is supplied to the input port, the valve body is closed. The spring is deflected by the pressure, the valve body opens the input port and closes the exhaust port, and compressed air from the input port is supplied to the output port, causing the compressed air at the input port to be compressed. When the air decreases, the valve body returns to its original state due to the biasing force of the spring and closes the input port, and compressed air from the output port passes through the air passage connecting the inside and outside of the retainer. a quick release valve that acts on the flange portion of the valve body to deform the valve body to open the exhaust port, whereby compressed air at the output port is discharged to the atmosphere through the exhaust port; In this case, a notch is formed in the cylindrical portion of the retainer, or a hole is bored in the flange portion, and the notch or hole forms an air passage communicating between the inside and outside of the retainer.

e Embodiment Figures 1 to 3 show a quick release valve according to the present invention.

The housing 11 of this quick release valve 10 has an input port 11a and an exhaust port 11b formed on the same axis as shown in FIG. 11c is formed.

In the housing 11, each opening 11 is provided.
A valve body 12 is disposed in relation to a, 11b, 11c, and 11c. The valve body 12 has a disk shape as shown in FIG. 2, and has a columnar part 12a at the center and a flange part 12b at the upper part of the columnar part. A sleeve 13 is fitted onto the columnar portion 12a of the valve body 12 by baking or the like in order to strengthen the columnar portion. In addition, this valve body 1
The flange portion 12b of No. 2 has an annular groove 12 in order to facilitate deformation of the peripheral edge 12c of the flange portion.
d, 12e are formed.

Flange portion 1 of valve body 12 formed in this way
A peripheral edge portion 12c of 2b is supported by a retainer 14. This retainer 14 has a dish shape as shown in FIG. 2, and has a hole 14a in the center. This hole 14a is for fitting into the columnar part 12a of the valve body 12, and four tongue pieces 14b are provided upright on the periphery of the hole 14a. This tongue piece 1
4b has the role of slidingly contacting the sleeve 13 of the valve body 12 and guiding the retainer 14 in the vertical direction. The retainer 14 is formed by forming the outer shape and tongue pieces 14b by punching, forming annular protrusions 14c by drawing, and bending the tongue pieces 14b. A notch 14d is formed between the tongue pieces 14b in such a retainer 14, and this notch is used to fit the retainer 14 into the columnar part 12a of the valve body 12, as shown in an enlarged view in FIG. In this state, an air passage 15 is formed that communicates the inside and outside of the retainer 14. A spring 16 is interposed between the peripheral edge 14e of the retainer 14 and the inner bottom wall 11d of the housing 11, and the spring 16 allows the peripheral edge 14e of the retainer 14 to 12c, and presses the peripheral edge portion 12c against the internal ceiling wall 11e of the housing 11.

When compressed air is supplied to the input port 11a, the valve body 12 assembled in the housing 11 in this way is heated by the pressure to the peripheral edge of the valve body 12.
2c is pressed down against the biasing force of the spring 16, thereby communicating the input port 11a and the output port 11c. At this time, the retainer 14 is lowered with its tongue piece 14b guided by the sleeve 13 of the valve body 12.
Then, the output port 11
When the pressure c reaches a certain level, the peripheral edge 12c of the valve body 12 is brought into contact with the ceiling wall 11e of the housing 11 again by the biasing force of the spring 16. Accordingly, the retainer 14 also has its tongues 1
4b is guided by the sleeve 13 of the valve body 12 and moves upward. When the pressure at the input port 11a is removed from this state, the valve body 12 is released through the air passage 15.
Due to the pressure of the output port 11c acting on the lower surface of the flange portion 12b, the columnar portion 12a of the valve body 12
is moved upward to open the exhaust port 11b. and,
When the compressed air from the output port 11c is discharged from the exhaust port 11b, the valve body 12 returns to the state shown in FIGS. 1 and 3. Meanwhile, the columnar part 1 of the valve body 12
2a is guided by the lower piece 14b of the retainer 14.

In the above embodiment, in order to apply the pressure of the output port 11c to the lower surface of the flange portion 12b of the valve body 12, the cylindrical portion of the retainer 14, that is, the retainer 1
An air passage 15 is formed by providing a notch 14d at the point where the valve element 4 slides into contact with the valve body 12.
For example, as shown in FIG. 4, a hole 14f may be formed in the bottom wall of the protrusion 14c.

f. Effects of the invention As mentioned above, the quick release valve according to the invention does not require the collar that was conventionally used to form the air passage, so the processing process and assembly process of the parts can be omitted. Therefore, cost reduction can be achieved.

[Brief explanation of the drawing]

Figures 1 to 4 show a quick release valve according to the present invention, with Figure 1 being an overall vertical sectional view, Figure 2 being an exploded perspective view of the valve body and retainer, and Figure 3 being an exploded perspective view of the valve body and retainer. is an enlarged sectional view of the main part showing the air passage,
Fig. 4 is an enlarged sectional view of the main part showing another form of air passage, Figs. 5 to 8 show a conventional quick release valve, and Fig. 5 is an overall vertical sectional view thereof. , Fig. 6 and Fig. 7 are enlarged sectional views of the main parts showing the operating state, Fig. 8 is an exploded perspective view showing the valve body, collar and retainer, and Fig. 9 is an enlarged sectional view of the main parts showing the air passage. It is a diagram. 10...Quick release valve, 11...Housing, 11a...Input port, 11b...Output port, 11c...Exhaust port, 11d...Bottom wall, 11e
... Ceiling wall, 12 ... Valve body, 12a ... Column part,
12b...Flange part, 12c...Periphery part, 12
d, 12e...Annular groove, 13...Sleeve, 14
...Retainer, 14a...hole, 14b...tongue,
14c...protrusion, 14d...notch, 14e...
Peripheral portion, 14f...hole, 15...air passage, 16
……spring.

Claims (1)

[Claims for Utility Model Registration] (1) A valve body having a columnar part in the center and a flange part on the upper part of the columnar part is arranged in relation to an input port, an output port, and an exhaust port of the valve housing, and , a cylindrical part of a retainer having a cylindrical part in the center and a flange part on the upper part is fitted into the columnar part of the valve body, and a spring is interposed between the flange part of the retainer and the valve housing. ,
When the valve body is urged toward the input port through the retainer and the input port is closed by the valve body, and compressed air is supplied to the input port, the pressure causes the spring to close. When the valve element is deflected, the valve body opens the input port and closes the exhaust port, compressed air from the input port is supplied to the output port, and when the compressed air from the input port decreases, the valve body opens the input port and closes the exhaust port. The body returns to its original state due to the biasing force of the spring and closes the input port, and the compressed air from the output port reaches the flange portion of the valve body through an air passage communicating between the inside and outside of the retainer. In the quick release valve, the valve body is deformed to open the exhaust port, whereby the compressed air at the output port is discharged to the atmosphere through the exhaust port. A quick release valve characterized in that a notch is formed in the shaped portion, and the air passage is formed by the notch. (2) A valve body having a columnar part in the center and a flange part on the upper part of the columnar part is arranged in relation to the input port, output port and exhaust port of the valve housing, and has a cylindrical part in the center. a cylindrical portion of a retainer having a flange portion on the upper part thereof is fitted into a columnar portion of the valve body, and a spring is interposed between the flange portion of the retainer and the valve housing;
When the valve body is urged toward the input port through the retainer and the input port is closed by the valve body, and compressed air is supplied to the input port, the pressure causes the spring to close. When the valve element is deflected, the valve body opens the input port and closes the exhaust port, compressed air from the input port is supplied to the output port, and when the compressed air from the input port decreases, the valve body opens the input port and closes the exhaust port. The body returns to its original state due to the biasing force of the spring and closes the input port, and the compressed air from the output port reaches the flange portion of the valve body through an air passage communicating between the inside and outside of the retainer. In the quick release valve, the flange portion of the retainer is actuated to deform the valve body to open the exhaust port, whereby the compressed air at the output port is discharged to the atmosphere through the exhaust port. A quick release valve characterized in that a protrusion is formed in the direction away from the valve body, and the air passage is formed in the protrusion.