JPH06241339A - Valve device - Google Patents

Abstract

PURPOSE:To compactly arrange wiring lead boxes by effectively use spaces between bulged parts of electromagnets for pilot valves arranged in parallel, and a manifold base so that the wiring lead boxes area arranged along the manifold base. CONSTITUTION:In a valve device, a plurality of stacked valve assemblies B to D in each of which valves are stacked one upon another on a manifold base A, are arranged. Pilot valves 1 the solenoid valves in the stacked valve assemblies C to D are arranged in parallel on the base A. A solenoid M for actuating the element in each pilot valve 1 has a bulged part M3 having one side thereof a power source terminal projected toward the base A and is adapted to be removably attached to the base A. Further, a single wiring lead box E is arranged along the base A, and a terminal assembly box G incorporating a terminal bed 43 is arranged on the end part of the base A. The power source terminal of each of the solenoids M and the terminals of the terminal bed are connected with electric wirings 37 laid in the wiring lead box E.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a valve device having a plurality of laminated valve assemblies each having a manifold base on which valves are stacked.

[0002]

2. Description of the Related Art A valve device of this type is disclosed, for example, in Japanese Patent Laid-Open No. 1-30.
In the valve device of this publication, the manifold base is composed of a plurality of blocks connected in parallel, and each pilot valve of each solenoid valve provided in each laminated valve assembly has a manifold base. Power is supplied to the pilot valves by being assembled to the blocks, and is conducted through the connectors that are incorporated in the blocks of the manifold base and are fitted and connected to each other.

[0003]

The above-mentioned conventional valve device has the advantage that it can be constructed compactly without exposing the electrical wiring around each laminated valve assembly.
It is necessary to insulate and install each connector in each block of the manifold base, and also to manufacture with high accuracy so that the connectors are fitted and connected to each other when the blocks of the manifold base are connected in parallel. Therefore, there is a problem that the manufacturing cost becomes high and that the manifold base becomes large because each connector is insulated and incorporated into each block of the manifold base. The present invention has been made to address the above-mentioned problems, and can be configured compactly,
The object is to provide a valve device that can be manufactured at low cost.

[0004]

In order to achieve the above-mentioned object, in the present invention, in a valve device comprising a plurality of laminated valve assemblies each having a plurality of valves arranged on a manifold base, each laminated Each solenoid valve provided in the valve assembly is provided with each pilot valve in parallel with the manifold base, and the power terminals that project toward the manifold base as electromagnets that operate the valve elements of each pilot valve are formed on one side. Part of the body that is detachably attached to the manifold base and has a body with an opening between the bulging part of each electromagnet and the manifold base and a cover that covers the opening. Place the lead-out box along the manifold base, and provide a centralized terminal box with a terminal block on the end of the manifold base to The power supply terminal and the terminals of the terminal block are connected by respective electric wires provided in the cable outlet box.

[0005]

In the valve device according to the present invention,
Since the wiring lead-out box is installed along the manifold base by effectively utilizing the space between the bulging parts of the electromagnets and the manifold base that are installed in parallel with the pilot valves, each electromagnet and manifold base are large. The wiring lead-out box can be compactly arranged without becoming complicated.
In addition, since each power supply terminal of each electromagnet is connected to each terminal of the terminal block by each electric wire provided in the wiring lead-out box, each electric wire can be configured compactly without being exposed to the outside, and each electric wire By allowing a margin for the length, it is possible to absorb the assembly error of each electromagnet and the central terminal box with respect to the manifold base, and it is possible to manufacture at low cost without requiring high-precision manufacturing.

Further, since the wiring lead-out box is sandwiched by the bulging portion of each electromagnet and the manifold base, the wiring lead-out box can be firmly and reliably supported. Further, since the wiring lead-out box is composed of a body having an opening at the top and a cover covering the opening, wiring work is easy with the cover removed, and work can be done easily even in a small space. In addition, since the wiring lead-out box has a single structure, the box itself is stronger than the case where each wiring lead-out box is provided corresponding to each electromagnet and these are connected, and the sealing member of the connecting portion is also provided. Is unnecessary, can be implemented at low cost, has a small number of parts, and is easy to assemble.

[0007]

An embodiment of the present invention will be described below with reference to the drawings. 1 to 3 show a valve device according to the present invention, which includes a manifold base A, a stacked valve assembly B, C, D formed by stacking valves on the manifold base A, and a manifold. A pair of wiring lead-out boxes E and F provided along both sides of the base A, and a manifold base A
It is constituted by a centralized terminal box G and the like provided on one end of the.

The manifold base A is composed of a single block. As shown in FIG. 4, one end is connected to the hydraulic pressure source P and the other end is closed by a plug (not shown). 11, a return passage 12 connected to the tank T open to the atmosphere at one end and closed at the other end by a plug (not shown), and a return passage 12 formed so as to penetrate through the passages 11 and 12 at right angles to each hydraulic cylinder H. Three pairs of output passages 1 connected at one end and closed at the other end by a plug (not shown)
3, 14, 15, 16, 17, 18 and connection passages that connect the passages to the valves of the stacked valve assemblies B, C, and D.

The laminated valve assemblies B and C include a pair of pilot valves I, a main valve J which is switched by the operation of these pilot valves I to form an electromagnetic switching valve, and this main valve J together with the main valve J. Manifold base A
It is composed of a flow control valve K stacked on top.
Further, the laminated valve assembly D is a main valve J that is a pair of pilot valves I and a pilot valve I that is switched by the operation of these pilot valves I to form an electromagnetic switching valve.
And a pressure reducing valve L and a flow control valve K which are laminated on the manifold base A together with the main valve J. The main valve J, the pressure reducing valve L, and the flow rate control valve K have the respective structures shown in FIG.

By the way, as shown in FIGS. 1 and 2, each pilot valve I is provided in parallel with the manifold base A as a set of three. As shown in FIGS. 3, 5 and 6, each pilot valve I is composed of a valve body 21 incorporated in the manifold base A and an electromagnet M for operating the valve body 21. Electromagnet M
Is composed of an iron core assembly M1, a coil assembly M2, and a functional block M3.

The iron core assembly M1 is integrally provided with a fixed iron core 22 and is screwed to the manifold base A at one end via a seal member. The movable iron core 23 and the movement of the movable iron core 23 are provided in the valve body 21 inside. The transmission connecting pin 24 is assembled so as to be movable in the axial direction. The coil assembly M2 is
A coil core 25, a yoke 26, and a body 27 obtained by resin-molding the coil 25 and the yoke 26.
The nut 28 is detachably fitted on the first end, abuts on the manifold base A at one end, and is fixed at the other end by a nut 28 screwed to the tip screw portion of the iron core assembly M1.

The functional block M3 is a core assembly M1.
Is pre-assembled on the other end of the to form a swelling portion, for sending electricity to the printed circuit board 31, the light emitting element 32 having an energization display function and the coil 25 such as the power supply terminal 33 mounted on the printed circuit board 31. And the cover 34 attached to the body 27 of the coil assembly M2 via a seal member. The power supply terminal 33 is composed of a pair of pins as shown in FIG. 7, penetrates through the cover 34, and projects toward the manifold base A.

Each of the wiring lead-out boxes E and F utilizes a functional block M3 in each electromagnet M, that is, a space formed between the bulge and the manifold base A, as shown in FIG. Then, the three electromagnets M arranged in parallel are arranged along the manifold base A over the whole set, and have an opening at the top and a centralized terminal box G.
Resin-molded body 35 having wiring insertion holes in the side wall
(Refer to FIGS. 5 and 6) and a cover 36 attached thereto, and 3 to 6 electric wirings 3 are provided inside.
7 is incorporated. As shown in FIG. 6, in the body 35, the protruding pin portion 35a formed at one end is fitted into the mounting hole provided in the manifold base A, and then the protruding pin portion 35a is formed.
The screw 38 is fitted into the recess formed in the above so as to be fixed and prevented from coming off, and the upper opening is covered by the cover 36 assembled through the seal member.
Each electric wiring 37 has a receptacle (receiving terminal) 39 at one end.
This receptacle 39 is fixed to the body 35 with the insertion opening as the outside, that is, the side into which the power supply terminal 33 of each electromagnet M is inserted.

As shown in FIGS. 1 and 2, the centralized terminal box G has a resin-molded body 4 having an opening on the upper side and a wiring insertion hole 41a (see FIG. 2) on one side wall.
1 and a cover 42 attached thereto, and a terminal block 43 is incorporated therein. Body 4
1 is assembled on the manifold base A, a terminal base 43 is screwed to a support base 41b formed inside, and the upper opening is covered by a cover 42. The terminal block 43 is a control panel (not shown)
The upper surface of the step is provided with a large number of terminals for connecting each power supply line (not shown) connected through the wiring insertion hole 41a to each other. The other end of 37 is connected by soldering means.

In the valve device of this embodiment constructed as described above, each wiring lead-out box E, F is provided on the manifold base A.
With the centralized terminal box G assembled, the other end of each electric wire 37 is connected to the lower connecting wire of each terminal on the terminal block 43 by soldering means, and the iron core assembly M1 is assembled to the manifold base A. After that, by sequentially assembling the coil assemblies M2 in which the functional blocks M3 are assembled in advance, the power supply terminal 33 of each electromagnet M is inserted into and connected to the receptacle 39 attached to one end of each electrical wiring 37. Therefore, in the valve device of the present embodiment, each electromagnet M can be attached and detached in a state where the wiring lead-out boxes E and F and the centralized terminal box G are assembled to the manifold base A.

Further, in the valve device of the present embodiment, the space between the bulging portion (functional block) M3 of each electromagnet M provided corresponding to each pilot valve I provided in parallel and the manifold base A is effective. Since the wiring lead-out boxes E and F are provided along the manifold base A, the wiring lead-out boxes E and F can be compactly arranged without increasing the size of the electromagnet M and the manifold base A. Further, since the power supply terminals 33 of the electromagnets M and the terminals of the terminal block 43 are connected by the electric wires 37 provided in the wire lead-out boxes E and F, the electric wires 37 are not exposed to the outside. It can be made compact and each electric wiring 3
By giving a margin to the length of 7, it is possible to absorb the assembly error of each electromagnet M and the central terminal box G with respect to the manifold base A, and it is possible to manufacture inexpensively without requiring high-precision manufacturing.

Further, since the wiring lead-out boxes E and F are sandwiched between the bulging portion M3 of each electromagnet M and the manifold base A, the wiring lead-out boxes E and F can be firmly and reliably supported. Further, each wiring lead-out box E, F has a body 35 having an opening at the top and a cover 36 for covering the opening.
With this configuration, the electric wiring 37 can be easily wired with the cover 36 removed, and the work can be performed easily even in a small space. Further, since each wiring lead-out box E, F has a single structure, the strength of the box itself is stronger than the case where each wiring lead-out box is provided corresponding to each electromagnet M and these are connected. There are advantages that the seal member of the connecting portion is not required, the cost can be reduced, the number of parts is small, and the assembly is easy.

In the present embodiment, the central terminal box G is used.
Is composed of a body 41 having an opening above and a cover 42 covering the opening, and the terminal base 43 is screwed to a support base 41b formed inside the body 41. Therefore, the cover 42 is removed. In the state, the electric wiring 37 is provided without stopping the terminal block 43 on the support base 41b.
The other end of the terminal block 43 can be easily connected to the lower connection line of each terminal on the terminal block 43 by soldering means, and each power supply line (not shown) can be connected to the terminal block 43 with the terminal block 43 fixed to the support block 41b. 43 can be easily connected to each terminal.

In the above embodiment, the present invention is applied to a valve device in which three pilot valves I are mounted in parallel on one side of the manifold base A, but four pilot valves I are mounted on one side of the manifold base A. The present invention can be similarly applied to the valve devices assembled in parallel as described above. In this case, it is necessary to employ four or more wiring lead-out boxes E and F instead of the three-leading boxes shown in the above embodiment.

[Brief description of drawings]

FIG. 1 is a partially cutaway top view showing an embodiment of a valve device according to the present invention.

FIG. 2 is a side view of the same.

3 is a sectional view taken along line 3-3 of FIG.

FIG. 4 is a hydraulic circuit diagram showing a configuration of the valve device shown in FIGS. 1 and 2.

5 is a partially enlarged view of FIG.

6 is a sectional view taken along line 6-6 of FIG.

7 is a diagram showing a part of an assembling process of the valve device shown in FIGS. 1 and 2. FIG.

[Explanation of symbols]

A ... Manifold base, B, C, D ... Stacked valve assembly,
E, F ... Wiring lead-out box, G ... Centralized terminal box, I ... Pilot valve, M ... Electromagnet, M3 ... Functional block (bulging part), 33
... power supply terminal, 35 ... body, 36 ... cover, 37 ... electrical wiring, 43 ... terminal block.

Front page continued (72) Inventor Shigenobu Usutani 1-1 Asahi-cho, Kariya city, Aichi Toyota Koki Co., Ltd. (72) Inventor Yasuo Kondo 1-1-1 Asahi-cho, Kariya city, Aichi Toyota Koki Co., Ltd.

Claims (1)

[Claims] 1. A valve device comprising a plurality of laminated valve assemblies each having a plurality of valves arranged on a manifold base, wherein each pilot valve of each solenoid valve provided in each laminated valve assembly is arranged in parallel with the manifold base. In addition to being provided, the electromagnet that operates the valve element of each pilot valve has a power supply terminal projecting toward the manifold base in a bulging portion formed on one side and is detachably provided on the manifold base. Also, a single wiring lead-out box composed of a body having an opening above between the bulging part of each electromagnet and the manifold base and a cover covering the opening is arranged along the manifold base, and on the end of the manifold base. A centralized terminal box equipped with a terminal block is installed on each terminal, and each power supply terminal of each electromagnet and each terminal of the terminal block are connected to each electric wiring provided in the wiring lead-out box. A valve device characterized in that it is connected by.