JPH05231558A - Valve unit - Google Patents

Abstract

PURPOSE:To reduce the size and the space of a valve unit, and to simplify piping and mounting work by dividing a valve which is relatively long in the axial direction, into a main valve part and an operational part, and by superimposing the main valve part, the operational part, a manifold base and a complex part for control fluid on each other in the shorter direction. CONSTITUTION:A square poled main valve part 1, a pair of pilot parts 2 and a pair of solenoid parts 3 are connected with each other coaxially, and are separated from each other by using an operational part 4 consisting of a pair of connecting bodies. Each main valve 1 is superimposed on a thick plate complex part 15 for control fluid through a sheet shaped sealing member 22 along the shorter direction, while a plurality of operational parts 4 are provided on the reverse surface of the complex part 15 for control fluid through a sealing member 25A along the shorter direction by the number corresponding to the number of the main valve parts 1. By superimposing the main valve part 1, the operational part 4 and the complex body 15 for control fluid on each other in the shorter direction, the size and the space of a valve unit can be reduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a valve unit,
In particular, the present invention relates to a technique effectively applied to, for example, a valve unit configured by assembling a plurality of indirectly operated valves.

[0002]

2. Description of the Related Art For example, as a valve unit of this type, a main shaft is accommodated in a shaft hole so as to be displaceable in the axial direction,
The main valve portion whose flow path is switched by the displacement of the main shaft, the pilot portion that controls the auxiliary fluid pressure by the opening / closing operation of the pilot valve to operate the main spindle, and the main valve portion are coaxially coupled to the pilot portion, Some include an operation unit including a solenoid unit for opening and closing, and a manifold base on which a plurality of indirect operation type valves including the main valve unit and the operation unit are mounted.

[0003]

By the way, each valve in the valve unit as described above is constructed by coaxially coupling the main valve portion and the operating portion, which are relatively long in the axial direction, to each other. As a result, the length of each valve in the axial direction becomes large, and as a result, miniaturization and space saving of the valve unit itself are hindered.

Such a problem also occurs because the manifold base is constructed by integrating the control fluid collecting portion and the piping collecting portion for the main valve.

Further, because of the above-described structure, rationalization of work for attaching pipes and wiring and improvement of workability are hindered.

An object of the present invention is to provide a valve unit which can be miniaturized and space-saving in the valve unit itself, and which can rationalize the work of installing pipes and wiring and improve workability.

The above and other objects and novel features of the present invention will be apparent from the description of this specification and the accompanying drawings.

[0008]

Among the inventions disclosed in the present application, a brief description will be given to the outline of typical ones.
It is as follows.

That is, in the structure of the valve unit of the present invention, the main shaft is accommodated in the shaft hole so as to be displaceable in the axial direction,
A main valve part whose flow path is switched by the displacement of the main shaft, a pair of pilot parts for controlling the auxiliary fluid pressure by operating the opening and closing of each pilot valve to operate the main shaft, and the respective pilot parts are respectively coupled, Of the main valve section, a control fluid collecting section for collecting control fluid of the main valve section, and the main valve section, the operating section, and the control fluid. The collecting portion has a structure formed by being overlapped with each other along the lateral direction.

In this case, it is possible to provide a structure in which a pipe collecting portion for collecting the pipes for each of the main valve portions is provided, and the pipe collecting portions are superposed along the lateral direction.

Further, it is possible to have a structure in which a wiring collecting portion for collecting wiring for each of the solenoid portions is provided, and the wiring collecting portions are overlapped in the lateral direction.

[0012]

According to the above-described structure of the valve unit of the present invention, the valve having a relatively large axial length is divided into the main valve portion and the operating portion and shortened. Since the manifold base and the control fluid collecting portion are formed by being overlapped with each other in the lateral direction, the valve unit itself can be downsized and the space can be saved.

In this case, if a structure is provided in which a pipe collecting portion for collecting the pipes for each of the main valve portions is provided and the pipe collecting portions are overlapped in the lateral direction, the pipe collecting portion is formed. By the centralized piping to, it is possible to rationalize the installation work of the piping or improve the workability, and since this piping collecting portion is divided from the control fluid collecting portion and polymerized along the short side direction, The use of the pipe assembly does not hinder the miniaturization of the valve unit itself and space saving.

If a structure is provided in which a wiring collecting portion for collecting wirings for the respective solenoids is provided and the wiring collecting portions are overlapped in the lateral direction, the wiring collecting portion is concentrated. By wiring, it is possible to rationalize wiring installation work or improve workability. Further, since the wiring collecting portion is overlapped along the lateral direction, the wiring collecting portion is used, so that the valve unit Miniaturization and space saving are not hindered.

[0015]

Embodiment 1 FIG. 1 is a sectional view showing a valve unit which is an embodiment of the present invention.

Each valve assembled in the valve unit of this embodiment is a directional control valve for fluid pressure such as compressed air. Each of the valves is an indirect actuation type solenoid type electromagnetic valve.

Each valve comprises a main valve portion 1 having a rectangular prism shape,
The pair of pilot portions 2 and the pair of solenoid portions 3 are coaxially coupled to each other, and the operating portion 4 formed of the pair of coupled bodies is separated from each other.

The main valve portion 1 includes a first drive piston portion 6 having a first drive piston 5 accommodated therein, a second drive piston portion 8 having a second drive piston 7 accommodated therein, and It is interposed between the first drive piston portion 6 and the second drive piston portion 8, and the main shaft 1 is inserted into the inner shaft hole 9.
No. 0 is accommodated, and the main shaft 10 has a main shaft part 11 whose flow path is switched by displacing the main shaft 10 along the axial direction by the operating force of the first drive piston 5 and the second drive piston part 7, The first drive piston portion 6, the second drive piston portion 8 and the main shaft portion 11 are coaxially coupled to each other.

Further, output ports 12A and 12B to which pipes are connected are opened on one side surface side of the main valve portion 1, and an input port 13 and discharge ports 14A and 14B are formed on the other side surface side of the main valve portion 1. Has been established.

Each main valve portion 1 having such a structure
Are superposed on the thick plate-shaped control fluid collecting portion 15 along the lateral direction (vertical direction in FIG. 1) via the sheet-shaped sealing member 22.

A plurality of sets of input ports 20 and discharge ports 21A, 21B are opened in the control fluid collecting section 15 in accordance with the number of main valve sections 1 to be mounted, and these input ports 20 and discharge ports 21A, 21B are provided. , Main valve part 1
The input port 13 and the discharge ports 14A and 14B are connected to each other. Note that the control fluid collecting portion 15 may be formed by connecting a plurality of control fluid collecting portion blocks 47 as in Example 3 described later, instead of forming the control fluid collecting portion 15 by a single block.

The input port 20 and the discharge ports 21A, 21B of the control fluid collecting portion 15 are collected in the input flow passage 23 and the discharge flow passages 24A, 24B which are common to the respective main valve portions 1.

Further, the control fluid collecting portion 15 accommodates a first pilot passage 17 communicating with a first cylinder chamber 16 accommodating the first drive piston 5 and a second drive piston portion 8. Second communicating with the second cylinder chamber 18
Plural sets of pilot channels 19 are formed corresponding to the number of main valve portions 1.

On the opposite surface of the control fluid collecting portion 15 on which the main valve portion 1 is mounted, the operating portion 4 has a sheet-like sealing member 25 along its lateral direction (vertical direction in FIG. 1).
A plurality of sets corresponding to the number of main valve parts 1 are mounted via A.

Pilot channels 25, 26, 27 are formed in each pilot section 2 of the operation section 4, respectively.

The pilot passages 25 of the pilot portion 2 on the left side of FIG. 1 are communicated with the first cylinder chambers 16 of the main valve portion 1 through the first pilot passages 17 of the control fluid collecting portion 15, respectively. The pilot flow passage 26 of the left pilot unit 2 is communicated with the discharge flow passage 24A of the control fluid collecting unit 15, and the pilot flow passage 27 of the left pilot unit 2 in the figure is the input of the control fluid collecting unit 15. The channels 23 communicate with each other.

On the other hand, the pilot passage 25 of the pilot portion 2 on the right side of FIG. 1 is passed through the second pilot passage 19 of the control fluid collecting portion 15 to the second cylinder chamber 1 of the main valve portion 1.
8, the pilot flow passage 26 of the pilot portion 2 on the right side of FIG. 8 is the discharge flow passage 2 of the control fluid collecting portion 15.
4B, the pilot flow path 27 of the pilot section 2 on the right side of the drawing is the input flow path 23 of the control fluid collecting section 15.
Are in communication with each other.

In each pilot unit 2 of the operation unit 4,
In the flapper chamber 28, a flapper 29 as a pilot valve that opens and closes the pilot passage 26 is accommodated so as to be displaceable in the axial direction.
It is urged toward the solenoid unit 3 side by 0.

On the other hand, each solenoid portion 3 of the operation portion 4 is movable between a movable iron core 32 accommodated in the solenoid chamber 31 so as to be displaceable in the axial direction, a fixed iron core 33 with which the movable iron core 32 comes in contact with and separates from the movable iron core 32. A spring 34 for urging the iron core 32 toward the pilot passage 27 side, a solenoid coil 3A, and the like are included.

The flapper chamber 28 and the solenoid chamber 31 are
The plunger pin 35 is communicated with each other through a communication passage 36 in which the plunger pin 35 is loosely inserted, and the flapper 29 and the movable iron core 32 are associated with each other via the plunger pin 35.

Next, the operation of the manifold unit having such a structure will be described.

The state shown in FIG. 1 shows the non-excited state of each solenoid portion 3. In this non-excited state, for example,
When a fluid pressure such as compressed air as a control fluid is supplied to the input flow path 23 of the control fluid collecting section 15 and the solenoid section 3 on the left side of the drawing is excited, the movable iron core 32 becomes an urging force of the spring 34. On the other hand, the pilot flow path 27 is opened by displacing to the fixed iron core 33 side, while the flapper 29 is displaced to the pilot flow path 26 side by the urging force of the spring 30 to close the pilot flow path 26.

The fluid pressure supplied to the input channel 23 is
The pilot passage 27, the solenoid chamber 31, the communication passage 36, the flapper chamber 28, and the pilot passage 2 on the left side of FIG.
5, the first cylinder chamber 1 through the first pilot passage 17
6 is introduced into the first driving piston 5 and acts on the first driving piston 5, so that the first driving piston 5, the second driving piston 7, the main shaft 1
0 is displaced from the state shown in the figure to the second cylinder chamber 18 side.

Due to this displacement, the input port 13 and the output port 12A and the discharge port 14B which are not connected are formed.
And the output port 12B are connected to each other, and the input port 13, the output port 12B, and the discharge port 1 which are in the connected state are connected.
4A and the output port 12A are disconnected and the flow path is switched.

By switching the flow paths, the input flow path 23
Is supplied to a predetermined fluid pressure operating device (not shown) through the input port 13 and the output port 12A, and the fluid pressure discharged from the fluid pressure operating device is discharged through the output port 12B and the exhaust port 14B. Channel 24B
Are collected and discharged to the outside.

Further, the fluid pressure remaining in the second cylinder chamber 18 is changed to the second pilot flow passage 19 on the right side of FIG.
It is discharged to the outside through the pilot flow path 25, flapper chamber 28, pilot flow path 26, and discharge flow path 24B.

Next, when the solenoid portion 3 on the right side of FIG. 1 is energized and the solenoid portion 3 on the left side of FIG. 1 is de-energized, the solenoid portion 3 on the left side of FIG. On the other hand, in the solenoid portion 3 and the pilot portion 2 on the right side in the figure, the movable iron core 32 resists the biasing force of the spring 34 and the fixed iron core 3
On the other hand, the flapper 29 is displaced to the side of the pilot channel 26 by the biasing force of the spring 30, and the pilot channel 26 is closed.

The fluid pressure supplied to the input channel 23 is
The pilot passage 27, the solenoid chamber 31, the communication passage 36, the flapper chamber 28, and the pilot passage 2 on the right side of FIG.
5, second cylinder chamber 1 through second pilot channel 19
As shown in the figure, the first drive piston 5, the second drive piston 7, and the main shaft 10 are displaced toward the first cylinder chamber 16 side by being introduced into the cylinder 8 and acting on the first drive piston 7.

Due to this displacement, the input port 13 and the output port 12B and the discharge port 14A which were not connected are
And the output port 12A are connected to each other, and the input port 13 and the output port 12A and the discharge port 1 which are in the connected state are connected.
4B and the output port 12B are disconnected and the flow path is switched.

By switching the flow paths, the input flow path 23
Is supplied to a predetermined fluid pressure operating device (not shown) through the input port 13 and the output port 12B, and the fluid pressure discharged from the fluid pressure operating device is discharged through the output port 12A and the exhaust port 14A. Channel 24A
Are collected and discharged to the outside.

In addition, the fluid pressure remaining in the first cylinder chamber 16 causes the first pilot passage 17 on the left side of FIG.
It is discharged to the outside through the pilot flow path 25, flapper chamber 28, communication path 36, pilot flow path 26, and discharge flow path 24A.

The valve unit of the present embodiment is operated as described above. In this case, however, in the valve unit of the present embodiment, the main valve portion 1 and the operating portion 4 and the control fluid which are separated from each other are used. Since the gathering portion 15 and the gathering portion 15 are overlapped with each other along the lateral direction, the valve unit itself can be made compact and space-saving.

[0043]

Second Embodiment FIG. 2 is a sectional view showing a valve unit which is another embodiment of the present invention.

As shown in FIG. 2, the valve unit according to the second embodiment includes a thick plate-shaped pipe collecting portion 40 in which pipes for the main valve portions 1 are collected.

The pipe collecting portion 40 is overlapped with the main valve portion 1 along the lateral direction thereof via the seat member 41.

Plural sets of piping ports 42A, 42B are provided in the piping collecting section 40 in correspondence with the number of sets of the output ports 12A, 12B of each main valve section 1, and the piping ports 42A, 42B are respectively provided with a plurality of sets. Output port 12A of the main valve unit 1,
12B are connected to each other.

The pipe collecting portion 40 is not formed by a single block as in the second embodiment, but is formed by connecting a plurality of pipe collecting block 43 as in the third embodiment described later. Is also possible.

According to the valve unit of the second embodiment,
A pipe collecting unit 40 for collecting the pipes of each main valve unit 1.
Since the pipes are superposed along the short side direction, the centralized piping to the pipe collecting portion 40 can rationalize the work of installing the pipes and improve the workability. Is separated from the control fluid collecting portion 15 and is polymerized along the lateral direction thereof. Therefore, the use of the pipe collecting portion 40 does not prevent downsizing of the valve unit itself or space saving.

[0049]

[Third Embodiment] FIG. 3 is a sectional view showing a valve unit according to still another embodiment of the present invention, FIG. 4 is an exploded perspective view of the valve unit, and FIG. 4 is a rear view of the valve unit shown in FIG. FIG.

In the valve unit of the third embodiment, as shown in FIG. 3, the pipe collecting portion 40 is the main valve portion 1.
It is constituted by a set of a plurality of blocks 43 for pipe collecting parts corresponding to the number of

Similarly, the control fluid collecting section 15 is also constituted by a set of a plurality of control fluid collecting section blocks 47 corresponding to the number of the main valve sections 1.

The control fluid collecting block 47 of the control fluid collecting unit 15 includes a connecting fitting 60, a common collecting pin 61 protruding from the connecting surface of each control fluid collecting block 47, and the connecting surface. Is formed on the connecting surface of each control fluid collecting block 47 on the opposite side of, and is connected to each other by a pin insertion hole (not shown) into which the common collecting pin 61 is inserted, and a seal is formed between the connecting surfaces. Member 62
Is intervened.

In addition, in the valve unit of the third embodiment, the wiring collecting portion 46 is composed of the wiring board 44 for the solenoid portion 3 which is a printed circuit board and the like, and the wiring cover 45 which covers and protects the wiring board 44. The wiring collecting section 46 is attached to the operation section 4 so that the wiring for each solenoid section 3 is collected.

The wiring collecting section 46 is also composed of a set of a plurality of wiring collecting section blocks 48 corresponding to the number of the main valve sections 1.

The wiring board 44 is provided with an indicator lamp 49 such as an LED for displaying the operating state of the solenoid portion 3, a terminal 63 for electrically connecting the wiring of each wiring collecting block 48, and the like. The cover 45 is formed with a display window 52 and the like through which the respective indicator lights 49 are exposed.

The valve unit having such a structure is interposed between the end blocks 64 and 65.

On one end block 64, a wiring assembly connector 66 for wiring the wiring assembly portion 46 is formed.

In the other end block 65, as shown in FIG. 5, a pipe collecting supply port 67 communicating with the input flow path 23 of the control fluid collecting portion 15 and a discharge flow of the control fluid collecting portion 15. A pipe collective discharge port 68 communicating with the passages 24A and 24B is opened.

A mounting bracket 69 is screwed to the end block 65 so that the valve unit can be installed at a predetermined position by the mounting bracket 69.

According to the valve unit of the third embodiment having such a structure, since the pipe collecting portion 40 for collecting the pipes of each main valve portion 1 is formed by being overlapped in the lateral direction thereof, By the concentrated piping to the pipe collecting portion 40, it is possible to rationalize the work of attaching the pipes and improve workability, and the pipe collecting portion 40 is divided from the control fluid collecting portion 15 in the lateral direction thereof. Since they are polymerized along with each other, the use of the pipe collecting portion 40 does not hinder the miniaturization and space saving of the valve unit itself.

Further, since the wiring collecting portion 46 for collecting wiring with respect to the wiring of each solenoid portion 3 is formed by being overlapped along the short side direction, wiring is attached to the wiring collecting portion 46 by concentrated piping. The work can be rationalized or the workability can be improved, and since the wiring collecting portion 46 is overlapped along the short side direction, the wiring collecting portion 46 is used to downsize the valve unit itself and save the work. Space is not hindered.

The invention made by the inventor of the present invention has been specifically described above based on the embodiments.
It goes without saying that the number is not limited to 3, and various changes can be made without departing from the spirit of the invention.

For example, in the first embodiment, the operating portion 4, the control fluid collecting portion 15 and the main valve portion 1 are superposed in this order, and in the second embodiment, the operating portion 4 and the control fluid collecting portion 15 are superposed. The main valve part 1 and the pipe collecting part 40 are polymerized in this order, and in the third embodiment, the wiring collecting part 46, the operating part 4, the control fluid collecting part 15, the main valve part 1 and the pipe collecting part 40 are polymerized in this order. However, the valve unit of the present invention is not limited to the polymerization by the sequential combination of the respective parts.

In the third embodiment, the control fluid collecting section 15, the pipe collecting section 40, and the wiring collecting section 46 respectively have a plurality of control fluid collecting block blocks 47 and a plurality of control fluid collecting section blocks 47 corresponding to the number of the main valve sections 1. Pipe collecting block 43,
Although it is constituted by a set of a plurality of wiring assembly block 48, in the present invention, the control fluid assembly 1
It is also possible to form at least one of the pipe collecting portion 40 and the wiring collecting portion 46 by a single member.

[0065]

The effects obtained by the typical ones of the inventions disclosed in this application will be briefly described as follows.
It is as follows.

(1) According to the structure of the valve unit of the present invention, the valve having a relatively large axial length is divided into the main valve portion and the operating portion and shortened, and the main valve portion and the operating portion are shortened. Since the manifold base and the control fluid collecting portion are formed by being overlapped with each other along the lateral direction, the valve unit itself can be downsized and the space can be saved.

(2) In the above-mentioned case, a pipe collecting portion for collecting the pipes for each of the main valve portions is provided, and the pipe collecting portion is structured to be superposed along the lateral direction, The centralized piping to the pipe collecting part makes it possible to rationalize the installation work of the pipe and improve workability, and the pipe collecting part is separated from the control fluid collecting part and is polymerized along the short side direction. Therefore, the use of the pipe collecting portion does not hinder the miniaturization and space saving of the valve unit itself.

(3) In the above-mentioned case, a wiring collecting portion for collecting wiring for each of the solenoid portions is provided, and the wiring collecting portion has a structure formed by being overlapped along the lateral direction. The concentrated wiring to the wiring collecting portion enables rationalization of wiring installation work and improvement of workability. Further, since the wiring collecting portion is superposed along the short side direction, the wiring collecting portion is used. As a result, miniaturization and space saving of the valve unit itself are not hindered.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a valve unit that is an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a valve unit which is another embodiment of the present invention.

FIG. 3 is a cross-sectional view showing a valve unit which is another embodiment of the present invention.

FIG. 4 is an exploded perspective view of the valve unit.

FIG. 5 is a perspective view of the valve unit as viewed from the back side.

[Explanation of symbols]

 1 Main Valve Part 2 Pilot Part 3 Solenoid Part 3A Solenoid Coil 4 Operating Part 5 First Drive Piston 6 First Drive Piston Part 7 Second Drive Piston 8 Second Drive Piston Part 9 Shaft Hole 10 Main Spindle 11 Main Shaft Part 12A Output Port 12B Output port 13 Input port 14A Discharge port 14B Discharge port 15 Control fluid collecting part 16 First cylinder chamber 17 First pilot flow passage 18 Second cylinder chamber 19 Second pilot flow passage 20 Input port 21A Discharge port 21B Discharge port 22 Seal Member 23 Input flow path 24A Discharge flow path 24B Discharge flow path 25A Seal member 25 Pilot flow path 26 Pilot flow path 27 Pilot flow path 28 Flapper chamber 29 Flapper 30 Spring 31 Solenoid chamber 32 Movable iron core 33 Fixed iron core 34 Spring 3 Plunger pin 36 Communication passage 40 Piping collecting part 41 Sheet member 42A Piping port 42B Piping port 43 Piping collecting block 44 Wiring board 45 Wiring cover 46 Wiring collecting part 47 Control fluid collecting part block 48 Wiring collecting part block 49 Indicator light 52 Display window 60 Connecting fitting 61 Common collecting pin 62 Sealing member 63 Terminal 64 End block 65 End block 66 Wiring collecting connector 67 Piping collecting supply port 68 Piping collecting discharge port 69 Mounting bracket

Claims (3)

[Claims] 1. A main valve unit in which a main shaft is accommodated in a shaft hole so as to be displaceable in the axial direction, and a flow path is switched by the displacement of the main shaft, and an auxiliary fluid pressure is controlled by opening / closing operations of respective pilot valves. And a pair of solenoids for operating the main shaft and a pair of solenoids respectively connected to the pilots for opening and closing the pilot valves, and a control fluid for the main valve. A valve unit comprising: a control fluid collecting portion, wherein the main valve portion, the operating portion, and the control fluid collecting portion are overlapped with each other along a lateral direction thereof. 2. A pipe collecting portion for collecting pipes for the respective main valve portions is provided, and the pipe collecting portion is formed by being overlapped along the lateral direction. Valve unit. 3. A wiring collecting portion in which wiring for each of the solenoid portions is collected, and the wiring collecting portion is formed by being overlapped along the lateral direction. The valve unit shown.