JPH05306785A - Valve device - Google Patents

Abstract

PURPOSE:To minimize the electrical connection parts between electromagnets of electromagnetic switching valves, which operate the switching valve provided in circuit structures laminated for arrangement in a manifold, and electrical wirings. CONSTITUTION:Electromagnets 53A, 53B of electromagnetic switching valve 39A, 39B, are fitted to one side surface of a manifold 1 so as to be projected. A wiring duct member 77A is arranged in a recessed part 69A formed in one side surface of respective electromagnet 53A..., and the wiring duct 77A is fitted to one side surface of the manifold 1. Plural electrical wiring 75 are provided so as to be inserted inside freely, and a receptacle metal fitting 76 provided in the electrical wiring 75 is fixed to a fixation part 83, and terminals 68A, 68B of respective electromagnets 53A, 53B are provided so as to be inserted freely to the receptacle metal fitting 76 to electrically connect the electromagnets 53A, 53B and the electrical wirings 75.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention has a plurality of mounting surfaces, each of which has a supply port communicating with a supply passage, a low pressure port communicating with a low pressure passage, and a load port communicating with a load passage, formed on one side surface of a manifold. A circuit structure having a flow path communicating with the supply port, a flow path communicating with the low pressure port, and a flow path communicating with the load port is formed on each mounting surface of the manifold, and each circuit structure body is disposed. Relates to a valve device having a switching valve for switching control between the flow paths and for controlling operation of an actuator connected to the load flow path.

[0002]

2. Description of the Related Art Conventionally, as a valve device of this type, an actual flat 1-
There is one shown in FIGS. 13 to 15 such as Japanese Patent Publication No. 100974. This is connected to the supply passage P on one side of a manifold 109 having a supply passage P connected to a pressure source, a low-pressure passage R connected to the low-pressure side, and load passages A and B connected to actuators. The plurality of mounting surfaces 109A, 109B having the low-pressure ports R1, R2 communicating with the supply ports P1, P2 and the low-pressure flow path R and the load ports A1, A2, B1, B2 communicating with the load flow paths A, B. Forming,
Circuit components 113A and 113B stacked on the mounting surfaces 109A and 109B of the manifold 109, respectively.
Are flow control valves 110A and 110B, pilot operated check valves 111A and 111B, and electromagnetically operated switching valve 112.
A and 112B are sequentially stacked to form each circuit structure 1
13A and 113B, flow paths 114A and 114B communicating with the supply ports P1 and P2 and flow paths 115A and 115B communicating with the low pressure ports R1 and R2 and load ports A1 and A2,
Flow paths 116A, 116B, 117 communicating with B1 and B2
A and 117B, each of the flow paths 114A, 114B and 11 is operated by energizing / de-energizing the switching valves 112A, 112B.
5A, 115B and 116A, 116B, 117A, 11
Switching between 7B is performed to control the operation of the actuator.

[0003]

However, the electromagnet 1 of the switching valve 112A located at the uppermost stage of the circuit structure 113A is not provided.
To electrically connect the electrical wiring 126 from the terminal block 121 provided inside the wiring duct member 120 attached to the manifold 109 to 18A and 119A, each valve 112A, 1
11A, 110A and the connector bodies 122, 123, 124, 125 provided inside the manifold 109, especially in the case of a circuit structure having many valves to be stacked, electromagnets 118A, 119A and electric wiring. There are many electrical connection points between 126, which may cause electrical connection failure, and there is a problem that the reliability of the valve device is low.
The present invention solves such a problem, and is highly reliable by extremely reducing the number of electrical connection points between the electromagnet and the electrical wiring without being affected by the circuit components stacked on each mounting surface of the manifold. It is intended to provide a valve device adapted to obtain the above-mentioned characteristics.

[0004]

Therefore, the valve device of the present invention has a supply passage connected to the pressure source, a low pressure passage connected to the low pressure side, and a load passage connected to the actuator.
A manifold having a plurality of mounting surfaces on one side that open a supply port communicating with the supply channel, a low-pressure port communicating with the low-pressure channel, and a load port communicating with the load channel, and laminated on each mounting surface of the manifold A circuit structure body having a flow path communicating with the supply port, a flow path communicating with the low-pressure port, and a flow path communicating with the load port, each of which is provided in the joint surface that is disposed and bonded to the mounting surface, and each circuit structure body In preparation for the operation, pilot operation is performed to switch control between the flow path communicating with the supply port, the flow path communicating with the low pressure port, and the flow path communicating with the load port by introducing pressure fluid into the pilot chamber or discharging fluid from the pilot chamber. Type switching valve, a pilot flow path that communicates with the pilot chamber of the pilot operated switching valve for each circuit structure, and opens to the joint surface, and a valve for each circuit structure for the manifold. Introduce pressure fluid into the pilot chamber of the switching valve through the pilot flow path that opens to each mounting surface so that it communicates with the lot flow path, and the pilot flow path of the manifold and circuit structure body by the operation of energizing and de-energizing the manifold. And a plurality of electromagnetic switching valves that discharge the fluid in the pilot chamber.Each electromagnetic switching valve is installed by projecting its electromagnet so that it projects from one side that does not form the mounting surface of the manifold. A concave portion is formed on one side surface of each of the electromagnets that are attached so as to project, and a wiring duct member is provided in the concave portion.

Further, the valve device of the present invention has a supply passage connected to the pressure source, a low-pressure passage connected to the low-pressure side, and a load passage connected to the actuator, and the supply port communicating with the supply passage. And a manifold having a plurality of mounting surfaces on one side that open a low-pressure port communicating with the low-pressure flow path and a load port communicating with the load flow path, and are stacked on each mounting surface of the manifold and joined to the mounting surface. A circuit structure having a flow path that communicates with the supply port, a flow path that communicates with the low-pressure port, and a flow path that communicates with the load port, each opening in the joint surface, and the pressure to the pilot chamber provided for each circuit structure. Pilot operated switching valve that controls switching between the flow passage communicating with the supply port, the flow passage communicating with the low pressure port and the flow passage communicating with the load port by introducing fluid or discharging fluid from the pilot chamber, and each circuit A pilot channel that opens in the joint surface and communicates with the pilot chamber of the pilot operated switching valve in preparation for the adult body, and a pilot channel that opens in each mounting surface so as to communicate with the pilot channel in each circuit component in preparation for the manifold. A plurality of solenoids that introduce pressure fluid into the pilot chamber of the switching valve or discharge fluid in the pilot chamber through the pilot passages of the manifold and circuit structure by energizing and de-energizing the passage and the manifold. Each electromagnetic switching valve is provided with its electromagnet projectingly attached to one side surface that does not form a mounting surface of the manifold, and each electromagnet terminal is projected and mounted on one side surface of the manifold. A wiring duct member is provided in which electric wiring for electrical connection is provided so as to be freely inserted therein, and this wiring duct member is one of the manifolds to which an electromagnet is attached. It is attached to the surface.

Further, in each of the valve devices of the present invention, one wiring duct member corresponds to a plurality of electromagnets.

[0007]

In the structure shown as the first means for solving the above problems, the manifold is provided with the pilot-operated switching valve provided in each circuit structure body laminated on each mounting surface of the manifold. It is operated by energizing / de-energizing each solenoid directional control valve to control switching between each flow path, and the electromagnet of each solenoid directional control valve mounted so as to project on one side surface that does not form the mounting surface of the manifold is A wiring duct member is provided in which a concave portion is formed, and an electric wiring for electrically connecting to a terminal of the electromagnet is provided in the concave portion so as to be inserted therein. Therefore, as compared with the conventional valve device, the number of electrical connection points between the electromagnet and the electrical wiring can be extremely reduced, and the reliability of the valve device can be favorably improved.

Further, as means for solving the problem, 2
In the second configuration, the solenoid operated directional control valve for operating the pilot operated directional control valve provided in each circuit structure has its electromagnet projectingly attached to one side surface not forming the mounting surface of the manifold. The wiring duct member disposed on the side surface is attached to one side surface of the manifold on which the electromagnet is attached, and the wiring duct member is internally provided with electric wiring for electrically connecting to the terminal of the electromagnet. Therefore, similar to the valve device having the first configuration, the number of electrical connection points between the electromagnet and the electric wiring can be extremely reduced, and the reliability of the valve device can be favorably improved.

In each of the above-mentioned valve devices, one wiring duct member is provided corresponding to a plurality of electromagnets, whereby it is possible to favorably prevent complication when the wiring duct member is arranged. ..

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 to 3, reference numeral 1 denotes a manifold, which has a supply passage 3 connected to a pressure source 2 and a low-pressure passage 5 connected to a tank 4 on the low-pressure side, which are axially penetrated. , A pair of load flow paths 7A, 7B, and 8 connected to the two actuators 6A and 6B, respectively.
A and 8B are separated from each other in the axial direction. Reference numerals 1A and 1B denote two mounting surfaces formed on one side surface of the manifold 1. The mounting surface 1A has two supply ports 3A communicating with the supply passage 3 and two low pressure ports 5A, 5B communicating with the low pressure passage 5. And a load port 7C communicating with the load flow passage 7A and a load port 7D communicating with the load flow passage 7B are provided by opening, and the mounting surface 1B is connected to the supply port 3B communicating with the supply flow passage 3 and the low pressure flow passage 5. Two low-pressure ports 5C and 5D that communicate with each other, a load port 8C that communicates with the load flow channel 8A, and a load port 8D that communicates with the load flow channel 8B are provided by opening.

Reference numeral 9A designates a circuit structure which is laminated on the mounting surface 1A of the manifold 1. A flow control valve 10A and a pilot operated type switching valve 11A are sequentially stacked on the mounting surface 1A to form four bolts. It is configured by detachably fixed by a member 9C. Incidentally, various control valves other than the flow rate control valve 10A can be stacked depending on the intended use. The flow rate control valve 10A is open to the joint surface 12A that is joined to the mounting surface 1A, and the flow path 13A and the low pressure port 5 that communicate with the supply port 3A.
Flow paths 14A and 15A communicating with A and 5B and load port 7
C, 7D and the flow path 16A, 17A which is connected, and each flow path 13A, 14A, 15A, 16A, 17A is a switching valve 1.
Flow paths 16A, 1 provided to open to a joint surface 19A joined to the joint surface 18A of 1A and communicating with the load ports 7C, 7D.
7A each have check valves 20A and 21A for allowing the fluid to flow freely from the switching valve 11A side to the manifold 1 side and blocking the flow in the opposite direction, and the switching valve 1 from the manifold 1 side.
Throttle valve bodies 22A, 23 that throttle the fluid to flow to the 1A side
A and A are provided to provide a meter-out diaphragm function. The switching valve 11A is opened to the joint surface 18A and each flow path 13A, 14A, 15A, 16A, 17 of the flow control valve 10A is opened.
Channels 24A, 25A, 26A, 2 that communicate with A respectively
7A, 28A, each flow path 24A, 25A, 26A,
27A and 28A are provided so as to communicate with a fitting hole 30A into which a switching valve body 29A is slidably fitted, with an axial interval, and the switching valve body 29A is formed in a pilot chamber 31A formed at both axial ends thereof. , 32A by introducing the pressure fluid to one side and discharging the fluid from the other side or by introducing the pressure fluid to the other side and discharging the fluid from one side to slide in the axial direction to form each flow path 24A,
Switching control is provided between 25A, 26A, 27A, and 28A. Reference numerals 33A and 34A denote pilot flow paths provided in the switching valve 11A, which are provided to communicate with the pilot chambers 31A and 32A and open to the joint surface 18A. 35A and 36A are pilot flow paths provided in the flow control valve 10A, and the switching valve 1
One end is opened to the joint surface 19A and the other end is opened to the joint surface 12A so as to communicate with the pilot channels 33A and 34A of 1A.

Reference numeral 9B designates a circuit component which is laminated on the mounting surface 1B of the manifold 1. The flow control valve 10B and the pilot operated switching valve 11B are sequentially stacked on the mounting surface 1B to form four bolts. The member 9D is detachably fixed. The flow control valve 10B has flow paths 13B, 14B, 15B, 16B and 17B communicating with the respective ports 3B, 5C, 5D, 8C and 8D opened on the mounting surface 1B, and has the same meter-out as the flow control valve 10A. It is provided to obtain the diaphragm function. The switching valve 11B has flow paths 24B, 25B, 26B, 27B, 28B communicating with the flow paths 13B, 14B, 15B, 16B, 17B of the flow control valve 10B,
Similar to the switching valve 11A, each flow path 24 is introduced by introducing the pressure fluid into the pilot chamber or discharging the fluid from the pilot chamber.
Switching control between B, 25B, 26B, 27B, and 28B is provided. Then, the switching valve 11A has a switching valve 11A.
Similarly, the pilot flow paths 33B and 34B are provided, and the flow rate control valve 10B is provided with the pilot flow paths 35B and 36B similarly to the flow rate control valve 10A.

37A and 38A are pilot flow passages provided in the manifold 1, which are flow control valves 10A of the circuit assembly 9A.
Of the pilot flow passages 35A, 36A so that one end is opened to the mounting surface 1A and the other end is electromagnetic switching valves 39A, 40A.
Hole 43 for accommodating the pilot valve elements 41A, 42A of
It is provided so as to communicate with A and 44A. Storage holes 43A, 44
A is a pilot supply flow channel 45A, 46A which is provided in a bottomed manner so as to face one side surface orthogonal to one side surface forming the mounting surface 1A of the manifold 1 and branch-connects to the supply flow channel 3.
And a pilot low-pressure flow path 47 branch-connected to the low-pressure flow path 5
A and 48A are provided so as to communicate with each other on both sides of the communicating portion of the pilot flow passages 37A and 38A with an interval in the axial direction.
Pilot valve bodies 41A and 42A are mounting holes 43A and 44A.
The sleeve members 49A and 50A fitted in the above are slidably inserted in the axial direction and urged in one direction by the elastic force of the springs 60A and 61A. The sleeve members 49A and 50A are continuously provided. Fixed iron cores 55A and 56A constituting the electromagnets 53A and 54A of the electromagnetic switching valves 39A and 40A are detachably screwed and fixed to the large-diameter screw holes 51A and 52A opening on one side surface so that the springs are attached. The pilot valve body 41A biased in one direction by the elastic force of 60A, 61A,
42A is provided in contact with the ends of the fixed iron cores 55A and 56A. Hereinafter, since the electromagnetic switching valves 39A and 40A are the same, the electromagnetic switching valve 39A will be described as a representative. Solenoid switching valve 39
The electromagnet 53A of A is provided with a tube member 57A and a lid member 58A fixedly attached to a fixed iron core 55A that is attached in a protruding manner, and a movable iron core 59A is provided inside the tube member 57A so as to be slidably inserted in the axial direction. The axial sliding of 59A is transmitted to the pilot valve body 41A via the rod member 62A penetrating the fixed iron core 55A. Further, the electromagnet 53A includes a coil 63A with a molding resin material and is molded into a rectangular parallelepiped shape to form a coil block member 6
4A is externally fitted to the fixed iron core 55A and the tube member 57A and detachably fixed by the nut member 65A, so that the manifold 4 can be attached so as to project to one side surface of the manifold 1. The coil block member 64A is provided with a box member 66A fixed to the upper portion on the protruding end side by two screw members 66B. The box member 66A has a widthwise length as the left-right direction in FIG. 1B. The coil block member 64A has the same length as that of the coil block member 64A, and the vertical length in the vertical direction of FIG. 1B is shorter than that of the coil block member 64A. A lamp 67A for turning off the light is provided so as to be exposed, and a coil 63 is provided on one side surface which is orthogonal to the upper surface and faces one side surface of the manifold 1.
Two terminals 68A electrically connected to A are provided so as to project. As a result, a recess 69A is formed on one side of the electromagnet 53A provided with the box member 66A, the movable iron core 63A is attracted to the fixed iron core 55A by the energization operation, and the pilot valve body 41A resists the elastic force of the spring 60A. Slides in the direction to switch and communicate the pilot flow passage 37A with the pilot supply passage 45A, and the suction force disappears due to the non-energizing operation, and the pilot valve body 41A slides in the axial direction by the elastic force of the spring 60A to move the pilot flow passage 37A. Pilot low pressure channel 47
It is provided by switching to A.

37B and 38B are pilot flow paths provided in the manifold 1, which are flow rate control valves 10B of the circuit assembly 9B.
Of the pilot flow paths 35B, 36B, one end of which is opened in the mounting surface 1B and the other end is opened by the electromagnetic switching valves 39B, 40B.
It is provided in communication with. The electromagnetic switching valves 39B and 40B are pilot supply passages 45B and 46 that branch-connect the pilot passages 37B and 38B to the supply passage 3 by energizing and de-energizing operations.
Pilot low-pressure flow path 47 branch-connected to B and low-pressure flow path 5
B and 48B are provided so that they can be switched and communicated with each other, and an electromagnetic switching valve 39
It has the same function as A and 40A. The electromagnet 53B of the electromagnetic switching valve 39B is attached to one side surface of the manifold 1 to which the electromagnet 53A of the electromagnetic switching valve 39A is projectingly mounted so as to be adjacent to the electromagnet 53A, and the electromagnet 54B of the electromagnetic switching valve 40B is mounted to the electromagnetic switching valve. 40A electromagnet 54
An electromagnet 5 is attached to one side of the manifold with A protruding.
4A is attached so as to be adjacent to each of the electromagnets 53B and 54.
Similarly to the electromagnet 53A, B has a concave portion and two terminals 68B are provided so as to project.

Reference numeral 70 designates a circuit structure 9B and an electromagnetic switching valve 39.
B, 40B is a centralized terminal box member provided in the manifold 1 adjacent to B, 40B, and has through-holes 71 through which a plurality of power supply lines from the outside (not shown) are inserted in its side wall, and the centralized terminal block member is internally provided. 72. Centralized terminal block member 7
2, a plurality of terminal fittings 73 for detachably electrically connecting a plurality of power supply lines from the outside are arranged on the upper part, and each terminal fitting 73 has a protruding fitting 74 protruding downward. 70A is a lid member that closes the upper opening of the centralized terminal box member 70, and is detachably attached to the centralized terminal box member 70. 75 is each electromagnet 53 of the electromagnetic switching valves 39A, 39B, 40A, 40B.
A, 53B, 54A, 54B terminals 68A, 68B are each electrically connected to a plurality of electrical wiring, each protruding metal fitting 74
Each is electrically connected by soldering. Each electric wiring 7
5 is a terminal 6 of each electromagnet 53A, 53B, 54A, 54B
8A, 68B at the end of the electrical connection side receptacle metal fittings 7
6 is fixedly attached, and the receptacle metal fitting 76 has the terminal 68.
A and 68B are provided so that they can be inserted freely.

Reference numeral 77A denotes one wiring duct member which is disposed so as to straddle the recesses 69A of the two electromagnets 39A and 39B.
Reference numeral 77B denotes one wiring duct member which is arranged so as to straddle the respective recesses of the two electromagnets 40A and 40B. The wiring duct member 77B is made of a resin material, and the plurality of electric wirings 75 are provided therein so as to be inserted therethrough. Lid members 78A and 78B for closing are provided respectively. The wiring duct member 77A will be described below with reference to FIGS. 1 and 2 and FIGS. 4 to 7. The wiring duct member 77A has two projecting shapes to be inserted into two bottomed mounting holes 79, which are formed by axially spacing one side surface of the manifold 1 to which the electromagnets 53A and 53B are mounted so as to project. The projections 80A and 80B are provided so as to project the projections 80A and 8B.
0B has a conical recess formed in the upper portion of the outer peripheral surface thereof, and the conical recess has screw holes 81, which open in the respective mounting surfaces 1A, 1B of the manifold 1 and communicate with each other at right angles to the mounting holes 79 ,.
Of the screw members 82A and 82B that are screwed to the inner side of the manifold 1 by inserting the wiring duct member 77A into the manifold 1.
It is attached to one side on which the electromagnets 53A and 53B are attached. Inside the wiring duct member 77A, two fixing portions 83 each having a recess into which the receptacle metal fitting 76 of the electric wiring 75 is detachably press-fitted and fixed are set, and two fixing portions 83 are axially spaced from each other. It is integrally formed by projecting upward from the bottom surface. In addition, the projection 80 of the wiring duct member 77A
A pair of insertion holes 84 for inserting the terminals 68A and 68B of the electromagnets 39A and 39B are formed on one side surface opposite to the one side surface on which A and 80B are provided, and two sets are axially spaced apart. Then, each insertion hole 84 communicates with the recess of the fixed portion 83. Further, the wiring duct member 77A has two convex portions 85A and 85B to be inserted into the centralized terminal box member 70 on one side contacting the centralized terminal box member 70, and penetrates the insertion hole 86 through which the electric wiring 75 is inserted. The insertion hole 86 communicates with an insertion hole 87 formed through the centralized terminal box member 70. Further, between the wiring duct member 77A and the central terminal box member 70, a seal member 88 having a shape that does not close the insertion holes 86 and 87 is provided so as to be locked to the two convex portions 85A and 85B. Two convex portions 85A of the wiring duct member 77A,
85B is formed on one side surface opposite to the one side surface having a substantially elliptical shape with four corners left so that the sealing member 89 does not protrude from the one side surface. The insertion hole 90 that opens and penetrates is provided so as to be closed, and the convex portions 85A and 85B are provided when connecting another wiring duct member (not shown) to the recessed surface that opens the insertion hole 90.
The two concave portions 91A and 91B into which the convex portions corresponding to are inserted are formed as depressions. When connecting another wiring duct member, the seal member 89 is replaced with the seal member 88.
Use the same as.

Numeral 92 is a seal member which is provided in the wiring duct member 77A and seals with the lid member 78A, and 93A, 93.
Reference numerals B, 93C, 93D, 93E, and 93F denote six insertion holes that are provided in the wiring duct member 77A and into which legs of the lid member 78A, which will be described later in detail, are inserted, and one end of the insertion hole is opened on the upper surface of the wiring duct member 77A. The other end has three insertion holes 93A, 93
B and 93C are opened on one side surface where the protrusions 80A and 80B are provided, and three insertion holes 93D, 93E, and 93F are insertion holes 84.
The opening is on one side. Next, the lid member 78A
This will be described with reference to FIGS. 1 and 2 and FIGS. 8 to 10. The lid member 78A projects downward from its bottom surface and is inserted into the six insertion holes 93A, ..., 93F of the wiring duct member 77A, and the six leg portions 94A, 94B, 94C, 94D, 9 are inserted.
4E and 94F are integrally formed and each leg portion 94A, ... 9
.. 95F is fixed to the wiring duct member 77A by locking the jaws 95A, ... 95F at its lower end to the upper surfaces of the insertion holes 93A ,. The lid member 78A is fixed to the wiring duct member 77A by being press-fitted and fixed in the recess of the fixing portion 83.
In order to prevent the receptacle metal fitting 76 of No. 5 from coming out upwards, two projection pieces 96 projecting downward from the bottom surface toward the receptacle metal fitting 76 are set as one set, and two sets are integrally formed with a gap in the axial direction. Is provided. Further, the lid member 78A is a seal member 9 provided on the wiring duct member 77A.
The seal holding portion 97 is formed in a shape along the inner peripheral surface of the seal member 92 so as to prevent the falling off of the second member 2 and projects downward from the bottom surface thereof.
Are integrally formed.

Next, the operation of this structure will be described. Figure 1
3 and FIG. 3, the pressure fluid is not supplied from the pressure source 2, and the switching valve bodies 29 of the switching valves 11A and 11B are shown in FIG.
Between the flow paths 24A and 24B and the flow paths 27A and 27B and between the flow paths 25A and 25B and the flow path 28 at the position shown in the upper half of FIG.
A and 28B are connected to each other, and each electromagnetic switching valve 39A, 39B,
40A and 40B are non-energized and each pilot flow path 37A, 3
7B, 38A, 38B to the pilot low pressure flow passage 47A,
Two actuators 6A and 6B are in communication with 47B, 48A and 48B and are stopped.

From this state, when the pressure fluid is supplied from the pressure source 2 to the supply passage 3, the pressure fluid is supplied from the supply port 3A to the passages 13A, 24A, 27A, 16A and the load port 7.
C, flowing through the load flow path 7A and being introduced to the head side of the actuator 6A, the fluid on the rod side of the actuator 6A is load flow path 7B, load port 7D, flow paths 17A, 28A, 2
5A, 14A, the low-pressure port 5A, and the low-pressure flow path 5 are discharged to the tank 4, and the actuator 6A operates in the leftward direction of FIG. 3 under speed control by the meter-out throttle function and stops at the left end. Further, the pressure fluid in the supply channel 3 is supplied to the supply port 3
The actuator 6B is introduced from B to the head side of the actuator 6B, and the actuator 6B is speed-controlled by the meter-out throttle function in the leftward direction of FIG. 3 similarly to the actuator 6A, and stops at the left end.

When the electromagnetic switching valve 40A is energized from the above-mentioned state where the actuator 6A is stopped at the left end, the electromagnetic switching valve 40A switches the pilot flow passage 38A to the pilot supply flow passage 46A so as to communicate with the pilot supply flow passage 46A. 46A
Pressure fluid flows through the pilot channels 38A, 36A, 34A and is introduced into the pilot chamber 32A.
The fluid A flows through the pilot flow passages 33A, 35A, 37A, the pilot low pressure flow passage 47A, and the low pressure flow passage 5, and the tank 4
1A, and the switching valve 11A has a switching valve body 29A shown in FIG.
By axially sliding to the position shown in the lower half to switch the flow passage 24A to the flow passage 28A and the flow passage 27A to the flow passage 26A, and introduce the pressure fluid in the supply flow passage 3 to the rod side of the actuator 6A. The actuator 6A operates in the rightward direction in FIG. 3 with its speed controlled by the meter-out throttle function, and stops at the right end shown in FIG. When the electromagnetic switching valve 40A is de-energized, the electromagnetic switching valve 40A returns to the illustrated state. When the actuator 6A is actuated to the left again,
It suffices to energize the electromagnetic switching valve 39A, whereby the pilot flow passage 37A is switched and communicated with the pilot supply flow passage 45A to introduce the pressure fluid into the pilot chamber 33A, and the switching valve 11A returns to the illustrated state. After that, the electromagnetic switching valve 39A is de-energized to return to the illustrated state.

The actuator 6 stopped at the left end
In order to operate B to the right end in the illustrated state, the electromagnetic switching valve 4
It is only necessary to energize 0B, whereby the switching valve 11B controls switching of the flow passage 24B to the flow passage 28B and the flow passage 27B to the flow passage 26B, and then the electromagnetic switching valve 40B is de-energized. When the actuator 6B is operated to the left again, the electromagnetic switching valve 39B is energized, whereby the switching valve 11B is returned to the illustrated state, and then the electromagnetic switching valve 39B is de-energized. Return to the illustrated state.

With this operation, the electromagnetic switching valve 39 for operating the switching valves 11A and 11B of the circuit components 9A and 9B, respectively.
A, 39B electromagnets 53A, 53B (electromagnetic switching valve 40
Since the electromagnets 54A and 54B of A and 40B are similar, the electromagnets 53A and 53B will be representatively described. ) Is attached so as to project on one side surface orthogonal to the one side surface forming the mounting surfaces 1A, 1B of the manifold 1, and the wiring duct member 77A is disposed in the recess 69A formed on one side surface of the electromagnets 53A, 53B.
The wiring duct member 77A is attached to one side surface of the manifold 1 to which the electromagnets 53A and 53B are attached, and the wiring duct member 77A is internally provided with the electromagnet 53.
Since the electric wiring 75 electrically connected to the terminals 68A and 68B of A and 53B is provided so as to be insertable, the number of electric connection points between the electromagnets 53A and 53B and the electric wiring 75 can be extremely reduced as compared with the conventional valve device. The reliability of the valve device can be improved satisfactorily. Further, since the wiring duct member 77A is disposed in the recess 69A formed on one side surface of the electromagnets 53A and 53B, it is possible to prevent the valve device from increasing in size and to improve the external shape satisfactorily. Further, since the wiring duct member 77A is attached to one side surface of the manifold 1 to which the electromagnets 53A and 53B are attached, the electromagnets 53A and 53A are attached.
By removing the nut member 65A of B, the fixed iron core 55A, and the coil block member 64A fitted on the tube member 57A, the terminals 68A and 68B are connected to the wiring duct member 77.
A can be pulled out from the insertion hole 84 of A, and the terminals 68A and 68B can be inserted into the insertion hole 8 by fitting the coil block member 64A onto the fixed iron core 55A and the tube member 57A.
4 can be inserted into the receptacle metal fitting of the electric wiring 75, so that the wiring duct member 77A can be inserted into the electromagnets 53A, 53A.
This can be done without being affected by the removal and installation of B, and the complicated removal and installation of the electromagnets 53A and 53B due to repair and maintenance can be favorably prevented. Furthermore, the wiring duct member 77A has one electromagnet 53A and two electromagnets 53B.
Therefore, it is possible to favorably prevent complication when disposing the wiring duct member 77A.

11 and 12 show another embodiment of the present invention. The same parts as those of the first embodiment are designated by the same reference numerals, and the description thereof will be omitted. Only different parts will be described. Manifold 9
In addition to the circuit components 9A and 9B, 8 is three circuit components 9
9A, 99B, 99C, circuit structure 99A, 99
C is provided in the same configuration as the circuit constructing bodies 9A and 9B, and the switching valve 100 of the circuit constructing body 99B is one electromagnetic switching valve 10.
The one that is operated by the energization / de-energization operation of 1 is provided. The wiring duct member 102 corresponding to one of the three electromagnets is provided in connection with the disposing duct member 77A. A seal member 88A having the same structure as the seal member 88 is provided at the connection point between the wiring duct members 77A and 102, and the seal member 89 shown in the embodiment is provided at one side surface facing the connection point of the wiring duct member 102. It is provided. Wiring duct member 1
Reference numeral 02 designates three projecting portions 102A, 102B, 102C for attaching to one side surface of the manifold 98 so as to project, and a fixing portion 83 of the wiring duct member 77A inside thereof.
The two fixing portions 103 having the same structure as the above are formed as one set, and three sets are integrally formed with a gap in the axial direction. Further, the wiring duct member 102 is provided with three insertion holes 104 having the same structure as the insertion hole 84 of the wiring duct member 77A, with two insertion holes 104 as one set and an axial interval. As the centralized terminal block member 105 provided inside the centralized terminal box member 70, the one in which the terminal fittings 73 are increased in response to the increase in the electric wiring 75 is used.
A cylindrical sleeve member 106 is fitted in the housing hole 43A not provided with an electromagnetic switching valve, and a lid member 107 is detachably screwed and fixed in the screw hole 51A. Further, one set of insertion holes 104 of the wiring duct member 102 not provided with the electromagnetic switching valve is closed by one sealing member 108. Then, it is possible to obtain the same effect as that of the embodiment.

In this embodiment, two circuit components 9A,
Valve device with 9B and 5 circuit components 9A, 9B, 9
Although the valve device including 9A, 99B, and 99C is shown, one including three circuit components using the wiring duct member 102 and four circuit components including two wiring duct members 77A are used. It is possible to appropriately implement the one provided with or the one provided with six circuit components by using two wiring duct members 102. In addition, the switching valve 1 provided in the circuit components 9A and 9B
Although 1A and 11B are 2-position switching valves, it goes without saying that 3-position switching valves may be used.

[0025]

As described above, in the valve device according to the first aspect of the present invention, the pressure fluid is introduced into the pilot chamber of the switching valve through the pilot and flow passages of the manifold and the circuit component by energizing and de-energizing the manifold. And a plurality of electromagnetic switching valves that discharge fluid from the pilot chamber are provided with their electromagnets projectingly attached to one side surface that does not form the mounting surface of the manifold, and one side surface of each electromagnet protruding and attached to one side surface of the manifold. A concave portion is formed in the concave portion, and a wiring duct member is provided in the concave portion so that an electric wiring for electrically connecting to a terminal of an electromagnet is inserted therein. Further, in the valve device according to claim 2, the valve device includes a manifold. The plurality of solenoid directional control valves are equipped with their electromagnets protruding from one side surface that does not form the mounting surface of the manifold. A wiring duct member having an electric wire for electrically connecting to a terminal of an electromagnet inserted therein is provided on one side of the wiring duct member, and the wiring duct member is attached to one side surface of a manifold to which the electromagnet is attached. Compared with the conventional valve device, the valve device can reduce the number of electric connection points between the electromagnet and the electric wiring without being affected by the circuit components laminated on the manifold, and can improve the reliability satisfactorily. You can Further, by providing one wiring duct member corresponding to a plurality of electromagnets, it is possible to favorably prevent complication when the wiring duct member is arranged.

Further, in the valve device according to the first aspect, since the wiring duct member is disposed in the recess formed on one side surface of the electromagnet, it is possible to prevent the device from becoming large and to improve the external shape satisfactorily. In addition, in the valve device according to claim 2, since the wiring duct member is attached to one side surface of the manifold to which the electromagnet is attached, the wiring duct member is not affected by the removal or attachment of the electromagnet, and the repair is performed. It has an effect that it is possible to favorably prevent the complicated attachment and detachment of the electromagnet due to maintenance.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention, (A) is a longitudinal sectional view of a valve device, and (B) is a plan view showing a part of the inside of the valve device.

FIG. 2 is a partial view of a valve device showing an embodiment of the present invention.
It is the front view shown by the cross section along line CC of (B).

FIG. 3 is a circuit diagram of a valve device showing an embodiment of the present invention.

FIG. 4 is a front view of a wiring duct member used in the valve device of the embodiment.

5 is a rear view of the wiring duct member shown in FIG.

FIG. 6 is a view seen from the arrow D in FIG.

FIG. 7 is a diagram viewed from an arrow E of FIG.

FIG. 8 is a bottom view of a lid member included in the wiring duct member shown in FIGS. 4 to 7.

9 is a view seen from the arrow F of FIG.

FIG. 10 is a view as seen from an arrow G in FIG.

FIG. 11 is a plan view showing the inside of a part of the valve device according to another embodiment of the present invention.

12 is a partially enlarged cross-sectional view taken along the line HH of FIG.

FIG. 13 is a front view showing a cross section of a part of a valve device showing a conventional example.

FIG. 14 is a side view showing a part of the inside of a valve device showing a conventional example.

FIG. 15 is a circuit diagram of a valve device showing a conventional example.

[Explanation of symbols]

1,98 Manifold 1A, 1B Mounting surface 3 Supply flow path 3A, 3B supply port 5 Low pressure flow path 5A, 5B, 5C, 5D Low pressure port 6A, 6B Actuator 7A, 7B, 8A, 8B Load flow path 7C, 7D, 8C , 8D load port 9A, 9B, 99A, 99B, 99C circuit structure 11A, 11B, 100 switching valve 12A joint surface 31A, 32A pilot chamber 33A, 33B, 34A, 34B, 35A, 35B, 3B
6A, 36B, 37A, 37B, 38A, 38B Pilot flow path 39A, 39B, 40A, 40B, 101 Electromagnetic switching valve 53A, 53B, 54A, 54B Electromagnet 68A, 68B Terminal 69A Recess 75 Electric wiring 77A, 77B, 102 Wiring duct Element

Claims (3)

[Claims] 1. A supply flow path connected to a pressure source, a low pressure flow path connected to a low pressure side, and a load flow path connected to an actuator, and connected to a supply port connected to the supply flow path and a low pressure flow path. A manifold having a plurality of mounting surfaces on one side that open the low-pressure port and a load port communicating with the load flow path, and a manifold that is stacked on each of the mounting surfaces of the manifold and that joins to the mounting surfaces. A circuit structure having a flow path communicating with the supply port, a flow path communicating with the low pressure port, and a flow path communicating with the load port, and the introduction of the pressure fluid into the pilot chamber or the pilot chamber for each circuit structure. The pilot-operated switching valve that controls switching between the flow path communicating with the supply port, the flow path communicating with the low-pressure port, and the flow path communicating with the load port by discharging the fluid of A pilot flow path that communicates with the pilot chamber of the operational switching valve and opens on the joint surface, and a pilot flow path that opens on each mounting surface so as to communicate with the pilot flow path of each circuit component in preparation for the manifold, and the manifold In preparation for this, a plurality of electromagnetic switching valves for introducing pressure fluid into the pilot chamber of the switching valve and discharging fluid in the pilot chamber via the manifold and each pilot flow path of the circuit structure by energization / de-energization operation are provided. However, each electromagnetic switching valve is provided with its electromagnet projectingly attached to one side surface that does not form the mounting surface of the manifold, and a recess is formed in one side surface of each electromagnet projecting and attached to one side surface of the manifold. A valve device comprising a wiring duct member in which electric wiring for electrically connecting to a terminal of an electromagnet is provided so as to be inserted therein. 2. A supply flow path connected to a pressure source, a low pressure flow path connected to a low pressure side, and a load flow path connected to an actuator, and connected to a supply port connected to the supply flow path and a low pressure flow path. A manifold having a plurality of mounting surfaces on one side that open the low-pressure port and a load port communicating with the load flow path, and a manifold that is stacked on each of the mounting surfaces of the manifold and that joins to the mounting surfaces. A circuit structure having a flow path communicating with the supply port, a flow path communicating with the low pressure port, and a flow path communicating with the load port, and the introduction of the pressure fluid into the pilot chamber or the pilot chamber for each circuit structure. The pilot-operated switching valve that controls switching between the flow path communicating with the supply port, the flow path communicating with the low-pressure port, and the flow path communicating with the load port by discharging the fluid of A pilot flow path that communicates with the pilot chamber of the operational switching valve and opens on the joint surface, and a pilot flow path that opens on each mounting surface so as to communicate with the pilot flow path of each circuit component in preparation for the manifold, and the manifold In preparation for this, a plurality of electromagnetic switching valves for introducing pressure fluid into the pilot chamber of the switching valve and discharging fluid in the pilot chamber via the manifold and each pilot flow path of the circuit structure by energization / de-energization operation are provided. The electromagnetic switching valve is provided with its electromagnet projectingly attached to one side surface that does not form the mounting surface of the manifold, and electrical wiring for electrically connecting terminals of the electromagnet to one side surface of each electromagnet projecting and attached to one side surface of the manifold. A wiring duct member is provided so that it can be inserted inside, and the wiring duct member is attached to one side of the manifold to which an electromagnet is attached. That the valve device. 3. The wiring duct member is one and is formed corresponding to a plurality of electromagnets.
The valve device according to.