JP2549923Y2 - Exhaust valve - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an exhaust valve capable of rapidly exhausting fluid in a cylinder or compressed air in an air pressure tank.

[0002]

2. Description of the Related Art FIG. 3 shows a conventional exhaust valve. Exhaust valve 2
Is composed of a first body 4 and a second body 6.
The first body 4 is formed with first and second ports 8 and 10 each having a threaded portion.
Two are communicating. A third port 14 having a screw portion is formed in the second body 6, and a hole 16 of a distal end portion 18 communicates with the third port 14. A lip packing 22 having a sleeve 20 is disposed at the bottom of the hole 12 of the first body 4, and the second body 6 is fitted therein.

[0003] When fluid is supplied from the first port 8, the exhaust valve 2 configured as described above operates as a lip packing 22.
Is displaced rightward in the figure and seats on the distal end portion 18 of the second body 6, and the hole 16 of the second body 6 and the first body 4
With the hole 12. Further, the sleeve 20 of the lip packing 22 is opened by the fluid pressure from the first port 8, and the fluid supplied from the first port 8 is supplied to the second port 1.
0 is supplied. On the other hand, when the supply of the fluid is stopped from the first port 8 and the fluid is supplied from the second port 10, the fluid pressure acts on the sleeve 20 of the lip packing 22, and the lip packing 22 is moved from the tip 18. Separate. Therefore, the fluid supplied from the second port 10 is supplied to the third port 14.

When the exhaust valve 2 configured as described above is provided in a pipe such as a cylinder, the first port 8 is connected to a fluid supply source, the second port 10 is connected to the cylinder, and the third port 10 is connected to the cylinder.
Open port 14 to atmosphere. With such a connection, when the fluid is supplied to the cylinder, the fluid flows from the first port 8 to the second port 10, and when the fluid is discharged from the cylinder, the fluid flows from the second port 10 to the third port 14.
Through which the fluid is discharged to the atmosphere.

[0005] Upon pipe to the cylinder, by connecting the exhaust valve 2 in this way, to shorten the piping distance to exhaust, performed quickly exhaust, it is possible to improve the responsiveness of the cylinder. Further, since the piping distance to exhaust is shortened, a portion to which moisture generated due to the operation of the cylinder is attached is reduced as much as possible.

[0006]

However, a second port 10 is provided at right angles to the first port 8 for communicating and supplying fluid to and from a device such as a cylinder. Therefore, it is limited to a pipe such as a so-called L-shaped pipe. Therefore, when connecting the exhaust valve 2 in a portion that is linearly piped, there is a problem that the pipe direction must be changed. Also, the third
There is an inconvenience that the piping direction to the port 14 is also limited. Furthermore, if the pipe is made of a non-metallic body such as vinyl, a first threaded connection is formed.
There is a problem that it is not possible to connect to the ports 8 to 14 or the connection work is complicated.

The present invention has been made to solve this kind of problem, and has been made without changing the piping direction.
It is another object of the present invention to provide an exhaust valve which can be easily connected to a pipe made of a flexible non-metal body such as vinyl.

[0008]

In order to achieve the above object, the present invention provides a first port to which a fluid is supplied and the first port.
A main body having a second port provided substantially parallel to the axial direction of the port and supplying a fluid to another device; and an L-shaped pipe rotatably mounted on the main body with a fluid. Rotating part with a third port for discharging oil
The first port has an umbrella-shaped cross-section in which the first port is formed.
The main body, the second port and the third port of which communicate with each other
Lip packing provided in the fluid passage of the part
And the rotating part is provided at the center of the main body to rotate the rotating part.
One end having a hole that freely supports the shaft and communicates with the third port
A connection member provided so that the portion faces the fluid passage,
The lip packing is provided from the first port.
Seated on one end of the connection member under the action of the supplied fluid
To close the hole communicating with the third port
Port and the second port, while the second port
The lip packing under the action of the fluid supplied from the
The connection member may be separated from one end and seated on a seat.
So that the second port and the third port communicate with each other.
And wherein the switch between the.

Further, the present invention provides a first port and a second port.
And a third port, the interior of the cylindrical bore portion for forming the port, respectively, a chuck member having a plurality of claw portions whose tip portion is bent Te inward <br/> cylindrical body, the chuck A guide member provided on the inner peripheral surface of the hole of the port for supporting the member, and a claw contacting the inner peripheral surface of the chuck member and bent toward the inside of the chuck member , part is characterized that you have a, a release bush which is arranged to abut.

[0010]

In the exhaust valve of the present invention, the first port and the second port
Since the axial directions of the ports are made substantially parallel, it is possible to incorporate the ports without changing the piping direction in the course of linear piping. In addition, since the rotating portion formed of an L-shaped tube provided with the third port is configured to be rotatable with respect to the main body provided with the first port and the second port, the rotating portion is directed in the pipe direction. Can be moved. Further, since the first to third ports are provided with the chuck member supported by the guide member, for example, even if the pipe to the cylinder is a vinyl tube, the claw portion of the chuck member is inserted into the tube. Then, the tube can be prevented from being pulled out and connected to the port.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The exhaust valve according to the present invention will be described in detail below with reference to the attached drawings and preferred embodiments.

First, an exhaust valve according to this embodiment will be described with reference to FIG. The same components as those in the conventional example are denoted by the same reference numerals, and detailed description thereof will be omitted.

The exhaust valve 30 has a first port 8, a second port 10, and a third port 14 provided with a one-touch fitting 34 described later on a cylindrical body 32 made of a resin body. The second port 10 and the second port 10 are formed so that their axial directions substantially coincide with each other. It should be noted that making the axial directions of the ports 8 and 10 substantially coincide with each other means not only making the axes coincide with each other but also making the axes parallel or the axial direction of the first port 8 is the axial direction of the second port 10. Includes having a slight angle to the direction. A substantially central portion of the body 32 is provided with a hole 35 communicating with the first port 8 and the second port 10 at right angles from the outer peripheral surface of the body 32.

[0014] At the center portion of the hole 35, the valve seat (wearing seat) 36 is provided, with respect to the body (body portion) 32 projecting portion formed to project on the outer circumferential surface of the hole portion 38 inside Are connected. The distal end (one end portion) 42 of the connecting member 40 faces the passage connecting the first port 8 and the second port 10, between the tip 42 and the valve seat 36, Rippupakki down 2 2 distribution Has been established. Further, an L-shaped tube 43 is provided at an enlarged portion of the hole 38 of the connecting member 40 so as to be rotatable in the axial direction of the hole 38 with the O-ring 41 interposed therebetween. The tip of the L-shaped tube 43 has a third
A port 14 is formed.

The one-touch type pipe joint 34 is formed such that one end of a vinyl tube or the like can be inserted to supply fluid pressure from an external device (not shown). Specifically, the one-touch type pipe joint 34 has a release bush 44, and the guide member 4 is provided outside the release bush 44.
6, the chuck member 48 and the seal member 50 are sequentially arranged.

A seal member 50 is provided on the bottom surface of the hole of the first port 8. The seal member 50 is a ring body, and its inner peripheral surface is inclined at a certain angle.

The chuck member 48 is formed by forming a flat plate made of elastic metal into a ring shape, and a plurality of slits are formed on the side surface thereof at equal intervals, and a sharp tip is formed at a tip end portion with the tip pointed. A claw portion 52 that is formed and bent inward is formed.

The guide member 46 has a concavity which goes around.
The recess is fitted to the tip of the body 32 and abuts against the side surface of the chuck member 48.

The release bush 44 is formed in a substantially cylindrical shape, and an edge 54 is formed at the tip of the release bush 44 in contact with the claw 52 of the chuck member 48 at the time of mounting. A plurality are defined.

A meter-in circuit including the exhaust valves 30a and 30b according to this embodiment will be described with reference to FIG.
The exhaust valves 30a and 30b have the same configuration as the exhaust valve 30, and the components will be described with reference to FIG. The meter-in circuit is configured to switch the air from the compressed air supply source 62 by a switching valve 64 and supply the air to the cylinder 60 via the exhaust valves 30a and 30b and the flow control valves 66a and 66b.

First, the tip of a vinyl tube or the like communicating from the switching valve 64 is inserted into the first port 8 of the exhaust valves 30a, 30b. After inserting the vinyl tube to the bottom of the hole of the first port 8, when the vinyl tube is lightly pulled, the claw portion 52 of the chuck member 48 of the one-touch fitting 34 is inserted into the vinyl tube, and the vinyl tube is removed. Prevent escape. Therefore, the vinyl tube and the first port 8 are reliably connected. Similarly, the second port 10 is connected to a vinyl tube communicating with the flow control valves 66a and 66b, and the third port 14 is connected to a vinyl tube communicating with the exhaust port. In this case, since the L-shaped tube 43 is rotatable with respect to the connecting member 40, the third port 14 may be connected to the vinyl tube by rotating in a direction in which the vinyl tube is not bent.

After the above operations, first, compressed air is supplied from the compressed air supply source 62 to the exhaust valve 30b via the switching valve 64. The compressed air that has flowed into the exhaust valve 30 b from the first port 8 reaches the hole 35, displaces the lip packing 22 upward in the drawing, and abuts the distal end 42 of the connection member 40. Further, when pressure is applied to the lip packing 22 from the compressed air, the sleeve 20 is opened, and the first port 8 and the second port 10 are communicated. Thus, compressed air is supplied from the exhaust valve 30b to the cylinder 60 via the flow control valve 66b. Due to the displacement of the piston of the cylinder 60, air flows from the other chamber into the flow control valve 66a.
To the second port 10 of the exhaust valve 30a. In the exhaust valve 30a, the lip packing 22 is displaced downward in the drawing due to the pressure of the air that has reached the second port 10, sits on the valve seat 36, shuts off the second port 10 and the first port 8, and Since the lip packing 22 is separated from the distal end portion 42 of the connection member 40, the second port 10 and the connection member 4
The holes 38 communicate with each other. Therefore, the second port 1
When the air reaches 0, the L-shaped tube 43 and the third
The air is exhausted from the exhaust port through the port 14.

In the exhaust valve according to the present embodiment, since the first port 8 and the second port 10 are formed substantially in a straight line, they can be connected without changing the piping direction or the like even if they are installed in the middle of the piping. Further, the L-shaped tube 43 is fitted rotatably in the direction perpendicular to the body 32 and the third port 14 is provided at the end of the L-shaped tube 43.
Is rotated through the L-shaped tube 43 so that the vinyl tube can be connected to the third port 14 without being bent. In the fluid circuit to the cylinder 60,
Since the exhaust valves 30a and 30b are provided in front of the switching valve 64 to substantially reduce the piping distance to the exhaust of the cylinder 60, moisture generated during the piping due to displacement of the piston of the cylinder 60 and adheres to the pipe body. The amount of water can be reduced. Further, when the amount of water adhering to the inside of a non-metallic pipe such as a vinyl tube increases, the tube or the like is cut halfway, and the exhaust valve 30 is interposed at the cut position by the one-touch type fitting 34. To reduce the generation of moisture.

A fluid supply source such as a compressed air supply source 62 is connected to the first port 8 and the third port 14 of the exhaust valve 30 so that fluid is supplied from the second port 10 to other devices. By connecting the second port 10 from the higher pressure of the first port 8 or the third port 14
The exhaust valve 30 can be used as a shuttle valve for supplying a fluid to the pump.

[0025]

According to the exhaust valve of the present invention, the following effects can be obtained.

That is, since the first port and the second port are provided substantially in parallel, it is possible to incorporate them in the middle of the pipe without changing the pipe direction. In addition, since the rotating portion composed of an L-shaped tube provided with the third port is configured to be rotatable with respect to the main body provided with the first port and the second port, the rotating portion is turned in the pipe direction. By doing so, the direction of the third port can be suitably changed. Further, first to third
Since the port is provided with a chuck member supported by the guide member, for example, in the case of piping using a vinyl tube, it is only necessary to cut a part of the vinyl tube or the like and insert the part into the exhaust valve. The tube is locked by the claw portion of the chuck member, and can be easily connected. Furthermore, by incorporating the exhaust valve in the fluid circuit to the cylinder in this way, the distance of the pipe to the exhaust can be shortened, and the amount of moisture adhering to the inside of the pipe can be reduced.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of an exhaust valve according to the present invention.

FIG. 2 is a meter-in circuit diagram of a cylinder incorporating the exhaust valve according to the present invention.

FIG. 3 is a longitudinal sectional view of an exhaust valve according to a conventional example.

[Explanation of symbols]

 2, 30, 30a, 30b Exhaust valve 8 First port 10 Second port 14 Third port 22 Lip packing 32 Body 43 L-shaped pipe 44 Release bush 48 Chuck member 52 Claw

Claims (2)

(57) [Scope of request for utility model registration] A main body having a first port to which a fluid is supplied and a second port provided substantially parallel to an axial direction of the first port and supplying a fluid to another device; A rotating portion having a third port for discharging a fluid, and an umbrella-shaped cross-section having a sleeve formed at a hem portion.
The first, second and third ports are interconnected.
Lip displaceably provided in the fluid passage of the body through which it passes
Packing and the rotating part provided at the center of the main body part are rotatable
And one end having a hole communicating with the third port.
A connecting member provided so as to face the fluid passage , wherein the lip packing is provided from the first port.
Seated on one end of the connection member under the action of the supplied fluid
To close the hole communicating with the third port
Port and the second port, while the second port
The lip packing under the action of the fluid supplied from the
The connection member may be separated from one end and seated on a seat.
So that the second port and the third port communicate with each other.
An exhaust valve, wherein the switch between the. 2. The exhaust valve according to claim 1, wherein the first port, the second port, and the third port each have a cylindrical body inside a cylindrical hole forming the port, and a distal end formed inside. A chuck member having a plurality of claw portions bent toward the opening; a guide member provided on an inner peripheral surface of a hole of the port for supporting the chuck member; contact, the claw portion is bent toward the inside of the chuck member, an exhaust valve, characterized that you closed and release bushing tip is arranged so as to contact, the.