JP2579580B2 - Switching valve - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switching valve which can be connected to a rail via a manifold base or directly.

[0002]

2. Description of the Related Art It is already known, without particular example, to connect a plurality of switching valves to a rail and to centrally manage these switching valves. It is connected to the rail via the base or directly. When the switching valve is connected to the rail via the manifold base, the supply port, the output port, and the discharge port of the pressure fluid can be communicated with the corresponding opening of the manifold base on the lower surface of the valve body. When the pressure fluid is directly output from the switching valve, the output port is opened on the upper surface of the valve body. On the other hand, when the switching valve is directly connected to the rail, the supply passage and the discharge passage of the pressure fluid penetrating in the connecting direction of the valve body are provided in the valve body, and the supply port and the discharge port are connected to these passages. The ports are connected to each other, and the output port is opened on the upper surface of the valve body. Therefore, even if the switching valve has the same size and driving means for the valve body, the structure of the valve body differs due to the difference in the form of connection to the rail, so that a plurality of types of valve bodies must be prepared. There is.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to provide a switching valve which can be connected to a rail via a manifold base or directly by means of the same valve body.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a valve body having a supply port, an output port, and a discharge port of a pressure fluid, and a valve hole in which these ports are opened. A switching element for switching the output port between a supply port and a discharge port to communicate with each other by sliding the valve element, wherein the valve body has a pressure fluid supply passage penetrating in the connecting direction. And a discharge passage, and a first output port and a second output port constituting the output port. The supply port, the first output port and the discharge port are provided on the lower surface of the valve body and for installing the switching valve. The second output port is connected to the supply passage and the discharge passage while the supply port and the discharge port are connected to the supply passage and the discharge passage, respectively. Was opened to the upper surface of the valve body,
At the lower surface of the valve body, a mounting portion of a blanking plate that can be mounted between the lower surface of the valve body and a rail on which the switching valve is installed and that closes the supply port, the first output port, and the discharge port is provided. It is characterized by having been provided.

[0005]

When the valve body is installed on the manifold base, the supply port, the first output port, and the discharge port opened on the lower surface of the valve body communicate with the corresponding openings of the manifold base. Therefore, by closing the supply passage, the discharge passage, and the second output port provided in the valve body by an appropriate means, it is possible to supply, output, and discharge the pressurized fluid from the manifold base. When the first output port is closed by an appropriate means,
The pressure fluid can be output from the second output port opened on the upper surface of the valve body.

When the blanking plate is mounted on the mounting portion on the lower surface of the valve body, the supply port, the first output port, and the discharge port are all closed, so that the pressure fluid is supplied from the supply passage and the discharge passage provided in the valve body. It is supplied to and discharged from the port and the discharge port, and is output from the second output port. Therefore, with the same valve body,
It can be connected to the rail via a manifold base or directly.

[0007]

FIG. 1 shows an embodiment of the present invention.
Can be installed via a manifold base 2 to be described later or directly on the rail 3 (see FIG. 3). The valve body 6 of the switching valve 1 includes a pressure fluid supply port P, first output ports A ₁ and B ₁ and second output ports A ₂ and B ₂ ,
Discharge ports EA and EB, an axial valve hole 7 in which these ports are opened, a supply passage 8 and a discharge passage 9a, 9b for a pressurized fluid penetrating in a continuous direction, and a supply port P, a first output port A ₁ , B ₁ and discharge ports EA, E
B opens on the lower surface of the valve body 6 at a position where it can communicate with the supply opening 21, the output openings 22a and 22b, and the discharge openings 23a and 23b of the manifold base 2, respectively.
The second output ports A ₂ and B ₂ are open on the upper surface of the valve body 5. Further, the supply passage 8 communicates with the supply port P, and the discharge passages 9a and 9b communicate with the discharge ports EA and EB, respectively.
In each opening of the first output ports A ₁ and B ₁ , a screw constituting a mounting portion 10 of the blanking plate 4 described later is engraved.

The sleeve 11 inserted into the valve hole 7 has an opening that individually communicates with each of the above-mentioned ports, and a spool, which is an example of the valve element 12 that slides inside the sleeve 11, has an appropriate operating force (the illustrated example). , A _{first position at} which the supply port P and the output ports A ₁ and A ₂ , and the output ports B ₁ and B ₂ and the discharge port EB communicate with each other by the pilot fluid pressure supplied from the pilot solenoid valve 1 a, By the urging force of the return spring 13, the supply port P and the output ports B ₁ , B ₂ ,
And the output port A ₁ A ₂ can be switched to the second position where the discharge port EA communicates. However, the switching valve of the present invention may be a three-port valve or a four-port valve, and the operating force of the valve element 12 is not limited to the pilot fluid pressure.

The supply opening 21 of the manifold base 2
And the discharge openings 23a and 23b are provided with a supply channel 24 and a discharge channel 25a, 2 penetrating in the direction in which the manifold base 2 is connected.
5b, the output openings 22a, 22b are connected to the output ports 26a, 26
b.

The blanking plate 4 is provided with a rail 3
3 and the lower surface of the valve body 6 (see FIG. 3). When the mounting port 10 is mounted on the lower surface of the valve body 6 by the mounting screws 28, the supply port P , The first output ports A ₁ and B ₁ and the discharge ports EA and EB are all closed (see FIG. 2).

When the switching valve 1 is installed on the manifold base 2 as shown in FIG. 1, the supply port P ₁ , the first output ports A ₁ , B ₁ and the discharge ports EA, EB correspond to the manifold base 2 respectively. To the supply opening 21, the output openings 22a and 22b, and the discharge openings 23a and 23b. Therefore, the supply passage 8, the discharge passages 9a, 9b of the valve body 6, and the second output ports A ₂ , B ₂
By closing each with a plug (not shown),
The pressure fluid is supplied and discharged from the supply flow path 24 and the discharge flow paths 25a and 25b of the manifold base 2 and is output from the first output ports A ₁ and B ₁ . In this case, if the first output ports A ₁ and B ₁ are closed with plugs,
The pressure fluid can be output from the second output ports A ₂ and B ₂ of the valve body 6.

Also, the mounting portions 10 of the valve body 6
When the blanking plate 4 is mounted with the mounting screws 28, 28, the supply port P and the first output ports A ₁ , B ₁
And the discharge ports EA and EB are all closed. Therefore, this switching valve 1 is connected by the mounting brackets 15 and 16.
As shown in FIG. 3, it can be directly attached to the rail 3. In this case, the pressure fluid supply passage 8 and the discharge passage 9a provided in the valve body 6, is supplied and discharged from 9b, is output from the first valve body 6 upper surface 2 output ports A _2, B _2.

[0013]

The switching valve of the present invention can be installed on the rail by the same valve body via the manifold base or directly, so that the switching valve connected to the rail can be made inexpensive. it can.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a state where the apparatus is installed on a manifold base.

FIG. 2 is a sectional view showing a state where a blanking plate is attached.

FIG. 3 is a cross-sectional view of a main part showing a state of being directly installed on a rail.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Switching valve 2 Manifold base 3 Rail 4 Blanking plate 6 Valve body 7 Valve hole 8 Supply passage 9a, 9b Discharge passage 10 Mounting part 12 Valve body 21 Supply opening 22a, 22b Output opening 23a, 23b Discharge opening P Supply port A ₁ , B ₁ first output port A ₂ , B ₂ second output port EA, EB discharge port

Claims (1)

(57) [Claims] 1. A valve body having a supply port, an output port, and a discharge port of a pressure fluid, a valve hole in which these ports are opened, and a valve body that slides in the valve hole. A switching port for switching the output port between the supply port and the discharge port to communicate therewith, wherein the valve body has a supply passage and a discharge passage for the pressure fluid penetrating in the connecting direction, and a first output port constituting the output port And a second output port, wherein the supply port, the first output port, and the discharge port are opened at a position on the lower surface of the valve body and at a position where they can communicate with corresponding openings of a manifold base for installing the switching valve. And connecting the supply port and the discharge port to the supply passage and the discharge passage, respectively, opening the second output port to the upper surface of the valve body, And a mounting portion for a blanking plate that can be mounted between the lower surface of the valve body and a rail on which the switching valve is installed, and that closes the supply port, the first output port, and the discharge port. Characteristic switching valve.