JPS59183181A - Solenoid valve operating at plurality of position of working - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is a solenoid valve with one starting position and n working positions (n>1), which has n individually controlled electromagnets. The electromagnet is controlled so that a force is exerted on a valve part which is movable from a starting position into a plurality of working positions against the force of a return spring.

This type of three-position solenoid valve is disclosed in U.S. Pat. No. 291,008.
No. 9 is known. This known solenoid valve has a first electromagnet that moves the spool against a spring force. An intermediate position of the stool and the electromagnet between the starting position and the end position is obtained by a second auxiliary electromagnet. When the second auxiliary electromagnet is actuated, the mover of this auxiliary electromagnet becomes the stone ξ for the mover of the first electromagnet.
This in turn holds the armature of this first electromagnet firmly in an intermediate position. When the auxiliary electromagnet is demagnetized, the resistance force exerted by the auxiliary electromagnet disappears, and the first
The armature of the electromagnet and the stool move into the end position provided that the first electromagnet is energized.

Another known three-position solenoid valve (F' German Patent Application No. 2,257,213) is operated by a single electromagnet.

However, this electromagnet is controlled by different magnitudes of power to adjust the valve to the two working positions. In this known example, the intermediate position is fixed by a spring force. This spring force acts against the movement of the armature after it has reached its intermediate position and is only overcome when it is controlled by a relatively higher power.

In the two known examples mentioned above, one electromagnet is involved throughout the movement of the valve body. That is, one electromagnet must provide power throughout the entire working stroke of the valve body. To provide such an output, the larger the switching distance requires a winding of relatively greater inductance. However, this requires a large time constant and thus increases the switching time of the solenoid valve.

On the other hand, each electromagnet is assigned one stone ξ such that, after reaching the stones, the individual electromagnets do not take part in further displacing the movable valve part. , n working positions are determined by the stones ξ, and each electromagnet allows the movable part to be moved from the starting position to the working position determined by the stones ξ belonging to the solenoid valve in question. To,
In the solenoid valve according to the present invention, which is characterized in that each electromagnet is designed and the control current of the electromagnet is determined, each electromagnet is made to correspond to one limited stroke. The number of work steps has been reduced.

This allows the use of relatively small electromagnets. Compared to known arrangements for controlling electromagnets with different magnitudes of power, the arrangement of the present invention is advantageous despite its likely relatively high cost. This is because controlling the control power can be dispensed with and a working position is obtained in which the current strength is relatively low and the power losses are relatively low.

The solenoid valve according to the invention is advantageously a slip valve. This is because relatively large strokes occur in slip valves. However, the solenoid valve of the present invention is disclosed in, for example, German Patent Application No. 290950
It may be a multi-position seated valve corresponding to FIG. 3 of Specification No. 4.

In the solenoid valve according to the invention, embodiments are possible in which the winding is arranged concentrically with respect to the axis of the movable valve part. However, it is also possible for the windings to be arranged eccentrically.

The invention will now be described in detail with reference to the drawings.

The three-point, three-position stool solenoid valve shown schematically in FIG. 1 consists of a valve part 1, an electromagnet 2 separate from the valve part 1, and a control device 3. Valve part 1 has 3 connection ports)
! , 5.6 are shown. For example, when used in an anti-skid control device for an automobile, the master cylinder is connected to the connection beat 4 of these connection ports 4, 5.6, the wheel brake ring is connected to the connection boat 5, and the return ring is connected to the connection port 6. A conduit can be connected.

The spool 7 is returned to the two defined working positions by the spring 8
In the first of the working positions, all the connections z-to-i
+, 5. a are disconnected from each other, and in the second working position the connecting ports) 5.5 are connected to each other.

The stool 7 has an extension 9 projecting from the valve part 1. Two electromagnets placed eccentrically with respect to this extension 9 are a U-shaped yoke 10.11 and a ring-shaped winding 12.11. '13 and the yoke 10, . 2 supported by 11
It consists of Tsunushi ζ-14 and 15. In the illustrated embodiment, the flange 16 contacts the strut 17.

The two windings 12.13 connect terminals 18.19 and output amplifier 2
0.21 and an OR gate 22.

If the solenoid valve is to be moved into the first working position, the winding 12 is controlled via the terminal 18 and the power amplifier 207. The magnetic field thereby created pulls the lever 14 to one side and moves it to the position shown in dashed lines. In the position indicated by the broken line, the yoke 10 acts as a stock lever ξ, and the levers 14 rest fully on the yoke 10.

The extension part 9 and the spool 7 are
is moved downward to the first task.

If the spool 7 is to be moved from the starting position to the second working position, it is essential to control both windings 12,13. This is because it is not possible to move the spool 7 from the starting position to the second working position by controlling the winding 13 alone. However, if the spool 7 is moved to the first working position in advance by controlling the winding 12 as described above, the winding 13
A further movement can be made until the ladder 15 can be pulled together and rest on the yoke 11, which acts as a stop (the position indicated by the dashed line). In this case, each winding 12 or 13 only serves for a predetermined stroke movement. The two working positions are uniquely defined by the yoke, which acts as a stone ξ. Contact portion 23 is provided to monitor the operation of the solenoid valve.

FIG. 2 is a graph showing the force and distance-to-toe relationship Ff(s) of the solenoid valve shown in FIG. The starting position of the solenoid valve is shown as S=Q, and the working positions are shown as S=1 and S-2. A straight line 24 shows the characteristics of the return spring 8. The stroke work of the two electromagnets is indicated by the hatched area. Straight line 25 shows how the force applied by the electromagnet changes over distance.

In the embodiment shown in FIG. 3, two electromagnets are used, which are arranged concentrically with respect to the stool 7', which is only partially shown. These electromagnets have a bowl-shaped core 30.3
1, windings 32, 33, and armature plates 34, 35 connected to the extension 9' of the spool 7'. In this case, the mover plate 35 and the stone ξ
The spring 37 tensioned between the stone 83 and the
Pressed to 8.

Winding 33 is used to move the solenoid valve to the first working position.
is controlled. This winding 33 strikes the movable plate 35.
It is pulled until it is placed on the core 31 acting as ξ. When the winding 32 is then controlled, the mover 34
is forced to move further against the force of the spring 37 until it rests on the core 30, which acts as a stone ξ.

The embodiment shown in FIG. 4 also uses two coaxial electromagnets. These electromagnets also have core 40.41
, windings 42, 43, and mover plates 44, 45. However, in this embodiment the extension of the stool is divided into two parts 9", 9"K, and the armature plate 45 is fixedly connected to the partial elements of the extension.

Furthermore, in this embodiment, first the winding 42 and then the winding 43
is controlled. In this case, the spring 37 shown in FIG.
is not used. When the first working position is obtained and the winding 43 is controlled, the movable parts q' and 94 of the extension are pulled apart from each other.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram of a first embodiment of the solenoid valve of the present invention in which the winding of the electromagnet is arranged eccentrically, and FIG. 2 is a diagram showing the spring characteristics of the spring of the embodiment of FIG. FIGS. 3 and 4 show a second embodiment of the solenoid valve of the present invention in which electromagnets are arranged concentrically. FIG. 3 is a schematic diagram of a third embodiment. 1... Valve part, 2... Electromagnet, 3... Control device,
4゜5.6...Connection port, 7.7'...Spool, 8...Return spring, 9,9'...Extension part, 9", 9"
4...part, 10.11...yoke, 12.13...
・Winding, 14゜15...Lever, 16...Flange,
17... Stone ξ, 18.19... Terminal, 20.
21... Output amplifier, 22... OR gate, 23.
・・Contact part, 24° 25・・Straight line, 30.31・・Core, 32.33・・Winding, 34.35・・Movable plate,
36...Stroke ξ, 37...Spring, 38...Stroke ξ, 40.41...Core, 42.43...Winding, 44.45...Mover F/G, 2 9”I 44

Claims (1)

[Claims] 1. A solenoid valve with one starting position and n working positions (n〉■), which has n individually controlled electromagnets, which are controlled so that the return of the type in which the force is applied to a valve part movable from a starting position to a plurality of working positions against the force of a spring, in which each electromagnet is assigned one stone ξ;
After reaching the point /ξ, the individual electromagnets do not take part in any further movement of the movable valve part, and n working positions are determined by the stop point ξ, and each electromagnet moves the It is assumed that each electromagnet is designed (and that the control current of the electromagnet is determined) in such a way that the valve part can be moved from its starting position to the working position determined by the strontometer ξ belonging to the electromagnet in question. A solenoid valve with a plurality of working positions, characterized in that the movable part (9; 9';9''; 9/N) of the solenoid valve is characterized by a spool (7, 7') of a slip valve. The solenoid valve according to claim 1. 3. The solenoid valve according to claim 1, wherein the movable part of the solenoid valve is a closing valve body of a seated valve. 4. The n windings of the solenoid valve. (32, 33; +2°43)
The solenoid valve according to any one of claims 1 to 3, wherein the solenoid valve is arranged concentrically with respect to the axis of the movable part (9';9'';9''). . 5. Claim 1, characterized in that the electromagnet is arranged eccentrically with respect to the axis of the movable part and exerts a moving force on the movable part (9) via ζ-(14, 15,). The electromagnetic valve according to any one of the dimensions from item 3 to item 3.