JPH07280120A - Valve operable by magnet - Google Patents

Abstract

PURPOSE: To facilitate assembling a valve by electrically connecting an electromagnet through a connection plug, electrically connecting the connection plug through a connection pin disposed on the electromagnet, and mechanically fixing it. CONSTITUTION: A solenoid hydraulic valve 10 comprises a main body part 12, and electromagnets 14, 16 are disposed on the main body part 12 to face side parts. The solenoid hydraulic valve 10 also has a connection plug 18 connected to a connection cable 20 above the main body part 12, the connection plug 18 and the main body part 12 have surfaces extended to be parallel to each other, and outer sizes of them are similar to each other. The connection plug 18 has insert contacts 22 at end surfaces provided for the electromagnets 14, 16. Contact pins 24 are provided on the electromagnets 14, 16 to be provided for them. End surfaces 13 of the electromagnets 14, 16 to be connected to the main body part 12 are extended over the main body part 12, and as a result, the electromagnets 14, 16 have ranges 15 where the contact pins 24 are disposed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention comprises a piston which is guided inside a body and which forms at least one flow-through, the piston being arranged on both sides of the body and having an electrical connection. It relates to a magnet-operated valve, in particular a hydraulic valve, which is operatively connected to an electromagnet of the type.

[0002]

BACKGROUND OF THE INVENTION The use of magnet-operable valves in machine tools, for example, is known. In this case, the function of the solenoid valve is to control the actuating device provided on the machine tool, for example to carry out a conveying movement or a clamping function.

This type of solenoid valve has electromagnets that can be attached to both sides of the main body. These electromagnets are operatively connected to a piston arranged inside the body. Depending on which one of the two magnets is activated, the magnetic force causes the piston to move in one direction or the other, in which case the piston opens the through hole. At this time, for example, the hydraulic fluid can flow in a plurality of directions through the through hole. The hydraulic fluid causes the movement of the actuating device, for example by means of a piston cylinder unit. In this case, the electromagnet is controlled from a central point, eg an operating device. Any of the electromagnets is connected to the operating device via an electrical equipment insertion portion and a connection cable provided in the equipment insertion portion.

The disadvantage in this case is that two connecting cables have to be laid in order to switch this type of hydraulic valve. The two connecting cables have separate bayonet coupling elements and thus there is the additional complication of cable laying when installing the valve. Furthermore, since there are two device insertion parts, an additional mounting space must be provided.

[0005]

SUMMARY OF THE INVENTION The object of the present invention is to provide a magnet-operated valve of this kind that can be easily assembled and can be installed without the great hassle of laying a cable. is there.

[0006]

In order to solve the above-mentioned problems, the present invention provides that, according to claim 1, the electric connection of the electromagnet is made through a connection plug, and the connection plug is arranged on the electromagnet. It is characterized in that it is electrically connected and mechanically fixed via a contact pin.

According to claim 2, the connecting plug is arranged as a unit separate from the body part, outside the body part, preferably above the body part. In this case the connection plug is
On both sides, it has an insertion contact attached to the electromagnet. The separate construction of the connection plug allows pre-wiring with the connection cable and the plugging device, after which the solenoid valve to be connected can be installed in a complementary manner.

According to the third aspect, the end surface of the electromagnet is in contact with the main body. On the other hand, the end face is at least on one side,
It extends beyond the main body and has a contact pin in the extended portion. The contact pin is attached to the plug contact of the connection plug. With such an advantageous construction, not only the whole valve which can be operated by magnets has a favorable design, but also by the contact of the electromagnet, a holding part for the connecting plug is formed.

This eliminates the need for a plug-in connector or switchboard.

According to a sixth aspect of the present invention, a light emitting diode for indicating the switching state of the solenoid valve is incorporated in the connection plug. This allows the operator to immediately confirm whether the solenoid valve is in the valve opening position or the valve closing position. In this case, it is necessary to previously associate the positions of the electromagnets that are in contact with each other on both sides.

According to claim 7 or 8, it is possible to incorporate a switching power amplifier and / or a proportional valve amplifier in the connection plug. This allows the magnets to be switched directly with little switching power.

Other advantageous configurations of the invention are disclosed in the other dependent claims.

[0013]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

In FIG. 1, reference numeral 10 is an electromagnetic hydraulic valve.

The electromagnetic hydraulic valve 10 has a main body 12. Electromagnets 14 and 16 are arranged on the main body 12 so as to face the sides thereof. Electromagnetic hydraulic valve 1
0 has a connection plug 18 connected to a connection cable 20 above the main body 12. The connecting plug 18 and the body 12 have surfaces that extend parallel to each other, and preferably have the same outer dimensions. The connection plug 18 is provided on the end faces attached to the electromagnets 14 and 16,
It has a plug contact 22. This plug contact 22
In addition, a contact pin 24 is provided on each of the electromagnets 14 and 16. The end faces 13 of the electromagnets 14 and 16 connecting to the body 12 extend beyond the body 12, so that the electromagnets 14 and 16 have a region 15 in which the contact pins 24 are arranged. .

FIG. 2 is a side sectional view showing the electromagnetic hydraulic valve 10 in an assembled state. The connection plug 18 is simply illustrated.

From FIG. 2 it can be seen that the body 12 is provided with electromagnets 14 and 16 on both end faces thereof. Electromagnets 14 and 1
The end surface 13 of 6 extends beyond the main body 12 and a connection plug 18 is interposed.

When installed, electromagnets 14 and 16
The contact pin 24 of the plug plug 22 of the connection plug 18
Engage with. This electrical contact also realizes mechanical fixing of the connection plug 18 at the same time.

The electromagnets 14 and 16 have the same mirror-symmetrical structure. The electromagnets 14 and 16 have a coil 30, which surrounds an armature 32. Armature 32
Is axially displaceable against the force of a return member, preferably spring 34.

When the connection plug 18 is connected via a connection cable 20 to an operation console (not shown) having a switch, the contact pin 24 is in a completed mounting state.
Alternatively, the plug contacts 22 provide a conductive connection between the switch located on the console and the electromagnets 14 and 16. The coil 30 of the electromagnet 14 or the coil 30 of the electromagnet 16 is actuated depending on what operation function is produced by using the electromagnet type hydraulic valve 10. In this case, the coil 30 produces a magnetic field, which causes the armature 32 guided inside the coil 30 to move axially. As the armature 32 moves in the axial direction, at the same time, the piston 26 guided in the duct 25 also moves in the axial direction. The piston 26 has a plurality of through holes, and when the piston 26 moves in the axial direction, these through holes close the circulation system with the inflow port or the outflow port 28 via the communication duct 29.

Therefore, depending on which electromagnet 14 or 16 is actuated, the armature 32 or the piston 26
By moving A in the axial direction in the direction opposite to the above case, the circulation system in the opposite direction, for example, the hydraulic circulation system is closed.

The area 15 which is integrally formed with the electromagnets 14 and 16 achieves a compact construction in which the entire electromagnetic hydraulic valve 10 can be mounted in a space-saving manner. At the same time, besides a secure electrical contact, a mechanical fixing of the connecting plug 18 is achieved.

[0023]

According to the present invention, a valve that can be operated by a magnet,
In particular, the hydraulic valve has two electromagnets which guide the pistons guided inside the body to different switching positions and are therefore connected and controlled via only one cable. You can In this way, both electromagnets can be controlled via the connecting plug connected to the operating device with only one cable.

By incorporating the connecting plug into the entire valve in a shape-constrained manner, the mounting conditions are improved when it is actually used, for example when it is mounted on a machine tool. This is because the number of mounting locations is small.

[Brief description of drawings]

FIG. 1 is a perspective view of a magnet-operable valve according to the present invention.

2 is an enlarged cross-sectional view of the valve of FIG.

[Explanation of symbols]

 14, 16 Electromagnet 18 Connection plug 24 Contact pin

Claims (8)

[Claims] 1. An electromagnet having a piston guided inside the body and forming at least one through-flow communication, said piston being arranged on both sides of the body and having electrical connections. In a operatively coupled, magnet-operated valve, the electrical connection of the electromagnets (14, 16) is the connecting plug (18)
Via the electromagnet (1).
4. A magnet actuable valve, characterized in that it is electrically connected and mechanically fixed via a contact pin (24) arranged at 4,16). 2. The connecting plug (18) has a body portion (12).
Located as a separate unit outside the body (12), preferably above the body (12) and on both sides,
Insertion contacts (2) attached to the electromagnets (14, 16)
2. A magnet actuable valve according to claim 1, characterized in that it has 2). 3. The end faces (13) of the electromagnets (14, 16) engage with the main body part (12), and the end faces (13) are extended beyond the main body part (12) and extended. 3. A magnet actuable valve according to claim 1 or 2, characterized in that it has a contact pin (24) in its part. 4. The contact pin (24) is inserted into the contact (2).
2. The method according to claim 1, wherein the connection plug (18) is fixed in position by engaging with 2).
A valve that can be operated with a magnet. 5. A magnet-operable magnet according to claim 1, characterized in that the connecting plug (18) is connected to an electrical connecting cable (20). valve. 6. The connection plug (18) has a light-emitting diode for indicating a switching state,
A valve operable with a magnet according to any one of claims 1 to 5. 7. The magnet actuable valve as claimed in claim 1, wherein the connection plug has a switching power amplifier incorporated therein. 8. A magnet actuable valve as claimed in claim 1, wherein the connecting plug (18) has a proportional valve amplifier incorporated therein.