DE10319632B4 - Pilot solenoid valve - Google Patents

Abstract

Pilot solenoid valve (1) comprising a main valve body (2) formed with pressure medium channels (4) and one with the main valve body (2) co-operating electromagnetically operated actuator (3), comprising a yoke and a cooperating with the yoke, with at least one sealing surface (7a, 7b) formed anchor (6) for opening and closing at least one with the sealing surface (7a, 7b) cooperating pressure medium channel (4), wherein the armature (6) axially movable between the main valve body (2) and a pole core (8), in one of the armature (6) at least partially receiving or surrounding bobbin (9) is arranged, wherein mechanical connection means (11) for releasable mechanical Connection of the actuator (3) to the main valve body (2) and electrical connection means (14) for electrical connection the actuator (3) are provided with an electronic control unit, wherein the mechanical connection means (11) and the electrical Connecting means (14) in the same interface area (5) are to an essentially simultaneous mechanical and electrical Connection of the actuator (3) to the main valve body (2) to realize, with the interface area ...

Description

The The invention relates to a pilot solenoid valve comprising a trained with pressure medium channels Main valve body and one with the main valve body cooperating, electromagnetically operated actuator, comprising a yoke and one cooperating with the yoke, with at least a sealing surface trained anchor to open and closing at least one with the sealing surface cooperating pressure medium channel, wherein the armature axially movable between the main valve body and a pole core in at least partially receiving the anchor or surrounding bobbin is arranged, wherein mechanical connection means for releasable mechanical connection the actuator with the main valve body and electrical connection means for electrically connecting the actuator to an electrical unit are, with the mechanical connection means and the electrical Connecting means are arranged in the same interface area, around a substantially simultaneous mechanical and electrical Connection of the actuator to the main valve body too realize, with the interface area substantially sandwiched between the main valve body and the actuator is formed.

such Pilot solenoid valves usually come in almost all areas of mechanical engineering and neighboring areas for use. In particular, find such pilot solenoid valves or General solenoid valves in handling technology, in control technology and in the drive technology wide use, such as as Directional, blocking, flow or special valves.

From the patent DE 36 09 366 C2 a solenoid valve is known with a valve housing, at least one valve seat, a sealing surface which is movable away from an armature in the direction of the valve seat to or from this, as well as arranged in a bobbin and cooperating with the armature coil, and with a Valve housing and the bobbin interconnecting mechanical connection means. The mechanical connecting means comprise at least one Anformung extending transversely to the longitudinal axis of the bobbin or the valve housing Anformung, which is arranged on the bobbin or on a connected to the bobbin part or on the valve housing or on a part connected to the valve housing. The mechanical connecting means further comprise at least one transverse to the longitudinal axis of the valve housing or the bobbin recess, which is arranged on the valve housing or on a part connected to the valve housing or on the bobbin or on a connected to the bobbin part. The projections and recesses are designed and arranged to each other so that they interact in the manner of a bayonet closure, wherein it has the following features. The molding is formed as an outwardly extending projection; the recess is formed by a arranged in the wall of a frame-like part slot, which is arranged on the coil body facing side of the valve housing or on the valve housing side facing the bobbin and serves to receive the projections having part of the bobbin or the valve housing , The slot is arranged on one of the two mutually opposite sides of the frame-like part, whose distance from each other is less than the distance between the other two opposite sides. The part carrying the projection is dimensioned such that its largest diameter is equal to or smaller than the distance between the slot-having sides of the frame-like part.

These solution has the disadvantage that the solenoid valve is relatively large, that the mechanical and the electrical connection of the solenoid valve done separately and overall is too expensive, so that the heat conduction and the magnetic flux is not optimal.

Next are from the DE 197 25 289 A1 . DE 42 33 783 A1 . DE 39 26 454 C2 and the DE 38 33 474 C2 mechanical and electrical connection means in the interface area between actuator and valve body according to the preamble of claim 1 suggested or known.

The in the above Publications disclosed realized by means of the connecting means However, connections are hard to handle. In addition, ensure the connecting means are not a simultaneous reliable electrical Connection.

It Therefore, the object of the present invention is a pilot solenoid valve of the type described above, in which a functional electrical and mechanical connection of the actuator with the main valve body is provided so that the heat conduction and the magnetic Flow are optimized, and reduces the number of fasteners is. In particular, it is the task of an easily manageable mechanical To realize connection.

These Task is based on a pilot solenoid valve according to the preamble of claim 1 in conjunction with its characterizing features solved. Advantageous developments of the invention are specified in the appended claims.

The Invention includes the technical teaching that the yoke of the actuator designed as a magnet pot is, which essentially forms the housing of the actuator and on the mechanical connection means are functionally integrated, wherein the magnet pot and the bobbin are rotatory relative to each other movably arranged to be at a connection of the magnet pot with the main valve body over one Rotational movement of the magnet pot relative to the main valve body a Relative movement between bobbin and main valve body to avoid so that the bobbin immovable relative to the main valve body is trained.

These solution offers the advantage that in the mechanical connection of the actuator with the main valve body simultaneously the electrical connection between actuator and main valve body made is. In this way, only one handle is needed to actuator and main valve body functionally with each other connect to.

One another advantage be achieved in that the connecting means is formed are that the actuator with the main valve body via a substantially translational Movement is mechanically and / or electrically connected. To this Way can by means of a handling operation a simple and little complicated connection can be realized. In addition, this connection movement can be automate well.

In same way to achieve an advantage in that the connecting means so are formed, that the actuator with the main valve body via a essentially rotational movement is connectable. These too Configuration of the connecting means allows easy installation or Dismantling and leaves easy to perform and therefore automate too well.

The Connection of the main valve body and the actuator is not alone on rotary and translational Movements restricted. Rather lets The connection between actuator and main valve body also by means of a combination of translational and rotational Realize movement.

A advantageous measure The invention provides that the yoke of the actuator as a magnet pot is formed, which essentially forms the housing of the actuator and formed on the mechanical connection means functionally integrated are. By training the for an electromagnetically operated actuator necessary yoke as magnetic pot, which also forms the housing of the actuator, can be over this Funktionsin delegation an additional casing save, thereby reducing the weight of the pilot solenoid valve and also the production cost is minimized. Further forms the training as a magnet pot the advantage that the magnet pot the For example, coil against damage and / or pollution. The training is to protect the coil no further effort such as encapsulation required.

A special measure improving the invention provides that the made of a magnetic flux conducting material Magnet pot also good thermal conductivity having. In this way, an effective actuator is ensured on the one hand, an optimal force due to an optimized magnetic flux having. In addition, the magnetic pot passes through the actuator caused heat optimally over the magnet pot off, so that thereby the pilot solenoid valve works reliably.

A advantageous embodiment of the magnet pot and in the magnet pot arranged bobbin provides that the magnet pot and the bobbin are rotatory relative to each other movably arranged to be at a connection of the magnet pot with the main valve body via a rotational movement the magnetic pot relative to the main valve body, a relative movement between bobbin and Main valve body to avoid so that the bobbin immovable relative to the main valve body is trained. This is possible Position the actuator optimally to the main valve body. In addition, can by the possibility of Rotational movement of the bobbin to the magnetic pot of the bobbin relative to the main valve body be firmly positioned and the magnetic pot after adjustment of the bobbin to the main valve body twist into a locked position. Thus can on a consuming Training the plug contacts are omitted as sliding contacts because a relative movement between bobbin and main valve body not comes about.

For easier connection of the magnetic pot with the main valve body, it is advantageous that the magnet pot has Verspannhilfsmittel. These can be arranged on the magnetic pot as either detachable or inseparable. These Verspannhilfsmittel are designed so that they do not significantly limit the magnetic flux. One possible embodiment of the Verspannhilfsmittel provides that the Verspannhilfsmittel as a recess, preferably bore, De formation or denting are attached to the magnet pot.

A another positive action provides that mechanical connection means functionally integrated in one piece to the main valve body are formed, wherein the mechanical connection means with corresponding interact mechanical connection means on the actuator. Due to the function-integrated, one-piece design of the connecting means at the main valve body are the components for connecting the actuator to the main valve body on a minimum, with no functional limitations must be accepted.

Accordingly, see an advantageous embodiment before that the cooperating mechanical connection means the actuator and the main valve body in the manner of a lock-trap principle and / or in the manner of a bayonet closure for positive connection of the Actuator interact with the main valve body. About these Both principles can be correspondingly a translational and / or a rotary movement for connecting the actuator with the main valve body realize. The aforementioned types of connection also secure a reliable, releasable Connection of the actuator and the main valve body.

A sees further advantageous embodiment in that mechanical connecting means are integral with the magnet pot are formed as Anformung, which with mechanical fasteners the main valve body, which are formed as a corresponding recess, cooperate to to provide a connection of the actuator to the main valve body. As Anformung any Any Anformung, nose or any projection understood, which together with a corresponding recess, Recess, depression or the like cooperates. By means of the molding, which cooperates with a corresponding recess is a simple and reliable Lock-trap principle or bayonet lock principle realized for connecting the actuator to the main valve body. This configuration leaves to realize yourself in a simple way. For example, the molding can be done by crimping, curling or overmolding. These embodiment represents only one of many embodiments of a lock-trap principle or a bayonet closure principle.

Corresponding sees another embodiment in that mechanical connection means on the magnet pot as a recess are formed, which with mechanical connection means the main valve body, which are designed as corresponding formations, interact, to provide a connection of the actuator to the main valve body. By means of the recess, which with a corresponding Anformung is also a simple and reliable lock-trap principle, respectively Bayonet locking principle for connecting the actuator with the main valve body realized. This embodiment can be realized in a simple manner. So lets the Anformung on the main valve body, for example by means of Creaming, curling or overmolding or by means of joining technology produce. It is also advantageous that electrical connection means are functionally integrated formed on the main valve body, wherein the electrical connection means with corresponding electrical Coupling connecting means on the actuator. By the Function integration can be additional components or processing steps or reduce manufacturing steps, resulting in a lower Production costs and for easier assembly and disassembly leads.

A advantageous embodiment the function-integrated design of the electrical connection means provides that the functionally integrated on the main valve body electrical connection means as applied in MID technology, the electrical current conductive contact surfaces are formed, which with corresponding, arranged on the actuator electrical Co-operate.

Under MID generally refers to the technology of spatially integrated electronic circuit support (MID = Molded Interconnect Devices). It allows the direct connection of mechanical and electronic functions on injection molded Parts or slides. Through this technique, the variety can be on electrical connections, cables and the like in a simple way, so that the electrical Slightly reduce the lanyard. Through this bundling The electrical connection means can be saved so components and the effort for Assembly / disassembly is reduced to a minimum. Boards and Spring contacts are not required.

Accordingly, one obtains an advantage in that electrical connection means are integrally formed on the coil body, wherein the electrical connection means cooperate with the electrical connection means formed on the main valve body. Preferably, the bobbin is not movably arranged relative to the main valve body, so that the electrical connection between actuator and main valve body takes place only at discrete locations. However, that is also a circulating electrical connection possible.

So receives one advantage in that the functionally integrated on the bobbin electrical connection means as the electric current conductive Contact pins are formed, which with the corresponding contact surfaces interact. This solution provides a discrete electrical connection between the actuator and main valve body, wherein the contact pins in a recess of the main valve body, which the in MID technology applied contact surfaces has protrudes. To prevent the pins from becoming unintentional Turning the actuator to the main valve body sheared or otherwise damaged are, an anti-rotation is provided, which is an unintentional Rotation of the actuator relative to the main valve body prevented.

A another embodiment of the invention provides that the bobbin rotationally immovable relative to the magnet pot detachable with the magnetic pot is connected to a simultaneous mechanical and / or electrical connection of the actuator and the main valve body to realize. By means of this arrangement is a simple plug connection, this means a connection of the actuator and the main valve body via a translatory Realized movement. The bobbin let yourself move axially, but a rotational movement relative to the Magnet pot not possible. If the magnet pot by means of a rotary movement with the Main valve body be connected, so have the main valve body and the bobbin sliding contacts to ensure a continuous electrical connection is.

As a result, sees an embodiment before that the electrical connection means as sliding contacts are formed to a continuous electrical contact the electrical connection means of the actuator and the main valve body at a connection made by means of a rotary movement one of the magnet pot immovably connected to the bobbin enable.

A other embodiment of the invention provides that the bobbin rotatably movable relative to the magnet pot releasably connected to the magnet pot is to have a simultaneous mechanical and / or electrical connection to realize the actuator and the main valve body. through This arrangement is a simple screw, that is a Connection of the actuator and the main valve body via a in Substantial rotational movement realized. A rotation movement of the bobbin relative to the magnet pot is possible. Main valve body and bobbins have correspondingly discrete electrical contacts, which for example via connectors are realized, with a continuous electrical connection guaranteed is.

As a result, it is advantageous that the bobbin designed as a projection Has anti-rotation, if the bobbin rotatably movable relative is formed to the magnet pot. In this case is to prevent an unwanted movement and thus possible damage to the electrical connection means an anti-rotation necessary. The anti-twist device can be any possible fulfilling the function Have shape. However, from a production point of view found that the anti-rotation formed as a projection is, whereby the anti-rotation in one piece and thus functionally integrated formed on the bobbin is. As a result, the number of components is kept to a minimum. A another form of anti-rotation and an additional mounting aid provides a rasterization there. This may take the lead or in combination be formed with the projection as rotation. The screening serves Among other things, to secure the magnetic pot position in the strained Condition, thus preventing accidental release of the magnet pot from the main valve body. Preferably has the ratchet notches, which is particularly advantageous has revealed that two catches in the circumferential direction of the magnet pot are arranged and another catch to prevent falling out of the bobbin is formed from the magnet pot.

One Another advantage is achieved in that the pole core a pressure medium line having, which cooperates with the pressure medium lines of the main valve body, to provide an exhaust duct. That way you can additional Pressure fluid channels or pressure medium lines save and functionally integrated in the pole core. The Polkern also limits the movement of the axially movable armature in one direction and forms a closure element the magnetic pot more precisely the passage opening of the magnet pot.

The armature is the actuator which has sealing surfaces which cooperate with the valve seats and thus cause opening and closing of the valve seats. The anchor preferably has a simple, easily produced geometry, for example a substantially cylindrical geometry. Also, due to the simpler geometry, the armature can thus center much better than the prior art, resulting in lower frictional forces, which in turn leads to a higher efficiency of the pilot solenoid valve. The anchor usually moves in a pole tube. Advantageously, in the present Be dispensed invention on a pole tube, which can save another component. The simple geometry of the armature can be realized in particular by additional grooves on the bobbin, since so the pressure fluid does not flow through corresponding formed on the armature pressure medium channels or the like, but by corresponding grooves or formations of the bobbin.

Of the Polkern can at least one pressure medium line or a pressure medium channel and have a corresponding valve seat. Magnet pot and Polkernels can be formed in two parts, preferably with pressed-pole core, or be formed in one piece, preferably as Anformung. The one-piece training of magnet pot, valve seat and pole core offers the advantage of being so cheap Tolerances finished, especially on the during the Operating thermal expansion. moreover there is no danger of pushing out the valve seat. Consequently the power flow is not over the bobbin, whereby the bobbin have thinner wall thicknesses can, what an additional Weight reduction of the pilot solenoid valve leads. Alternatively, it is it also possible the Form valve seat equal to the magnetic pot, so that the pressed Polkern insofar thoroughly can be omitted. This carries to a further component savings.

In addition to the pole core, another sealing element used to seal the passage opening become. Preferably, to seal the passage opening with using the pole core cooperating sealing rings or O-rings, which are respectively pressed into the through hole and thus an optimal and reliable Ensure seal.

It You can arrange several pilot solenoid valves together. How to achieve another advantage in that a valve block at least two inventive pilot solenoid valves comprises, wherein the valve block is integrally formed or more comprising interconnected individual pilot solenoid valves. hereby let yourself in a small space by coupling several pilot solenoid valves almost any desired Realize solenoid valve function.

Further the invention improving measures are in the subclaims or together with the description below several preferred embodiments of the invention with reference to the figures shown in more detail. It shows:

1 a longitudinal section through a side view of a pilot solenoid valve according to the invention,

2a a perspective view of a magnet pot in a first embodiment, and

2 B a perspective view of a magnet pot in a second embodiment.

The pilot solenoid valve 1 to 1 consists of a main valve body only partially shown here 2 , which with an electromagnetically actuated actuator 3 interacts. The main valve body 2 has pressure medium channels 4 on, through which a pressure medium is passed. Furthermore, the main valve body 2 one interface area each 5 on. The interface area 5 is arranged such that this essentially the contact surface between the actuator 3 and main valve body 2 represents and therefore essentially sandwiched between actuator 3 and main valve body 2 is arranged. The actuator 3 , which is electromagnetically actuated, has an anchor formed as a valve tappet 6 on, which with an upper sealing surface 7a and a lower sealing surface 7b is provided to pressure medium channels 4 seal. The anchor 6 is axially between the main valve body 2 and a pole core 8th movable. anchor 6 and polkernels 8th are from a bobbin 9 surrounded by a coil, which in turn is a magnet pot 10 surrounded by a trained yoke. The magnet pot 10 has a passage opening, inter alia, for receiving the armature 6 on, which through the pole core 8th is completed. The Polkern 8th has a pressure medium channel, which with the pressure medium channels depending on the position of the armature 6 interacts. The bobbin 9 including coil at least partially surrounds the anchor 6 and works together with the magnet pot 10 trained yoke and the pole core 8th a movement of the anchor 6 ,

The pilot solenoid valve 1 also has mechanical connection means 11 on which the actuator 3 and the main valve body 2 connect with each other. The mechanical fasteners 11 in 1 are designed in the manner of a bayonet closure, wherein the mechanical connection means 11 in or near the interface area 5 of the main valve body 2 or the actuator 3 arranged. The mechanical fasteners 11 are in 1 as Anformung 12 to the magnet pot 10 formed, wherein the Anformung 12 with the corresponding recess on the main valve body 2 interacts to connect actuator 3 and main valve body 2 to effect. The connection of actuator 3 and main valve body 2 takes place in 1 about a rotational movement. The bobbin 9 is rotatable in the magnet pot 10 arranged for the verbin the actuator 3 with the main valve body 2 that is, the one about a substantially rotational movement of the magnet pot 10 relative to the main valve body 2 realized connection no relative movement of the bobbin relative to the main valve body 2 causes.

Furthermore, the pilot solenoid valve 1 electrical connection means 14 for electrical contacting of the actuator 3 and the main valve body 2 on. The electrical connection means 14 are as one or more pins 15 formed, which the contact surfaces 16 of the main valve body 2 to contact. The contact surfaces 16 of the main valve body 2 are in MID technology on the main valve body 2 appropriate. As in 1 illustrated, the contact pin extends 15 in a corresponding, with contact surfaces 16 formed recess, thus providing the electrical connection between the main valve body 2 and actuator 3 there. The contact pin 15 is designed so that it all for the actuator 3 required contact lines bundles. The pins 15 and the contact surfaces 16 comprehensive electrical connection means 14 are analogous to the mechanical fasteners 11 also in the interface area 5 of the pilot solenoid valve 1 that is between main valve body 2 and actuator 3 arranged.

2a shows an inventive, as a magnet pot 10 trained yoke. The magnet pot 10 is integrally formed as a cylindrical tube having a bottom, which has a collar with through-hole. In its wall or lateral surface has the magnet pot 10 a recess 13 on, which extends to the end face of the open tube end, and thus allows a recording of a corresponding Anformung, so that after completion of the connection by means of a rotary and translational movement of the magnet pot 10 relative to the main valve body creates a positive connection in the manner of a bayonet fitting.

2 B shows another embodiment of a magnet pot according to the invention 10 , In 2 B has the magnet pot 10 an Anformung pointing towards the tube outside 12 on, which is arranged on the front side of the open pipe end. This formation 12 cooperates with a corresponding recess, so that after completion of the connection by means of a rotary and translational movement of the magnet pot 10 relative to the main valve body creates a positive connection in the manner of a bayonet fitting.

1

Pilot solenoid valve

2

Main valve body

3

actuator

4

Pressure fluid channel

5

Interface Area

6

anchor

7a

upper sealing surface

7b

lower sealing surface

8th

pole core

9

bobbins

10

magnet pot

11

mechanical connecting means

12

conformation

13

recess

14

electrical connecting means

15

pin

16

contact area

Claims (16)

Pilot solenoid valve ( 1 ) comprising one with pressure medium channels ( 4 ) formed main valve body ( 2 ) and one with the main valve body ( 2 ) cooperating, electromagnetically operated actuator ( 3 ) comprising a yoke and a cooperating with the yoke, with at least one sealing surface ( 7a . 7b ) trained anchor ( 6 ) for opening and closing at least one with the sealing surface ( 7a . 7b ) cooperating pressure medium channel ( 4 ), the anchor ( 6 ) axially movable between the main valve body ( 2 ) and a pole core ( 8th ), in an anchor ( 6 ) at least partially receiving or surrounding bobbin ( 9 ), wherein mechanical connection means ( 11 ) for the releasable mechanical connection of the actuator ( 3 ) with the main valve body ( 2 ) and electrical connection means ( 14 ) for electrically connecting the actuator ( 3 ) are provided with an electronic control unit, wherein the mechanical connection means ( 11 ) and the electrical connection means ( 14 ) in the same interface area ( 5 ) are arranged to provide a substantially simultaneous mechanical and electrical connection of the actuator ( 3 ) with the main valve body ( 2 ), the interface area ( 5 ) substantially sandwiched between the main valve body ( 2 ) and the actuator ( 3 ), characterized in that the yoke of the actuator ( 3 ) as magnet pot ( 10 ) is formed, which substantially the housing of the actuator ( 3 ) and on the mechanical connecting means ( 11 ) are functionally integrated, wherein the magnet pot ( 10 ) and the bobbin ( 9 ), are rotatably arranged relative to each other to move in order to connect the magnetic top ( 10 ) with the main valve body ( 2 ) via a rotational movement of the magnet pot ( 10 ) relative to the main valve body ( 2 ) a relative movement between Spu body ( 9 ) and main valve body ( 2 ), so that the bobbin ( 9 ) relative to the main valve body ( 2 ) is immobile. Pilot solenoid valve ( 1 ) according to claim 1, characterized in that the connecting means ( 11 . 14 ) are designed so that the actuator ( 3 ) with the main valve body ( 2 ) is mechanically and / or electrically connectable via a substantially translational movement. Pilot solenoid valve ( 1 ) according to claim 1, characterized in that the connecting means ( 11 . 14 ) are designed so that the actuator ( 3 ) with the main valve body ( 2 ) is connectable via a substantially rotational movement. Pilot solenoid valve ( 1 ) according to one of the preceding claims, characterized in that mechanical connection means ( 11 ) functionally integrated in one piece on the main valve body ( 2 ) are formed, wherein the mechanical connection means ( 11 ) with corresponding mechanical connection means ( 11 ) on the actuator ( 3 ) interact. Pilot solenoid valve ( 1 ) according to claim 4, characterized in that the cooperating mechanical connection means ( 11 ) on the actuator ( 3 ) and the main valve body ( 2 ) in the manner of a lock-trap principle and / or in the manner of a bayonet closure for the positive connection of the actuator ( 3 ) with the main valve body ( 2 ) interact. Pilot solenoid valve ( 1 ) according to one of the preceding claims, characterized in that mechanical connection means ( 11 ) in one piece on the magnet pot ( 10 ) as Anformung ( 12 ), which are provided with mechanical connection means ( 11 ) on the main valve body ( 2 ), which as a corresponding recess ( 13 ) cooperate to connect the actuator ( 3 ) and the main valve body ( 2 ). Pilot solenoid valve ( 1 ) according to one of the preceding claims, characterized in that mechanical connection means ( 11 ) on the magnet pot ( 10 ) as a recess ( 13 ), which are provided with mechanical connection means ( 11 ) on the main valve body ( 2 ), which as corresponding Anformung ( 12 ) cooperate to connect the actuator ( 3 ) and the main valve body ( 2 ). Pilot solenoid valve ( 1 ) according to one of the preceding claims, characterized in that electrical connection means ( 14 ) functionally integrated on the main valve body ( 2 ), wherein the electrical connection means ( 14 ) with corresponding electrical connection means ( 14 ) on the actuator ( 3 ) interact. Pilot solenoid valve ( 1 ) according to claim 8, characterized in that on the main valve body ( 2 ) functionally integrated electrical connection means ( 14 ) as applied in MID technology, the electric current conductive contact surfaces ( 16 ) are formed, which with corresponding, on the actuator ( 3 ) arranged electrical means ( 14 ) interact. Pilot solenoid valve ( 1 ) according to one of the preceding claims, characterized in that electrical connection means ( 14 ) functionally integrated on the bobbin ( 9 ), wherein the electrical connection means ( 14 ) with the at the main valve body ( 2 ) formed electrical connection means ( 14 ) interact. Pilot solenoid valve ( 1 ) according to claim 10, characterized in that on the bobbin ( 9 ) functionally integrated electrical connection means ( 14 ) as the electric current conductive pins ( 15 ) are formed, which with the corresponding contact surfaces ( 16 ) interact. Pilot solenoid valve ( 1 ) according to one of the preceding claims, characterized in that the bobbin ( 9 ) rotatably movable relative to the magnet pot ( 9 ) detachable with the magnet pot ( 9 ) is connected to a simultaneous mechanical and / or electrical connection of the actuator ( 3 ) and the main valve body ( 2 ) to realize. Pilot solenoid valve ( 1 ) according to one of the preceding claims, characterized in that the bobbin ( 9 ) has a trained as a projection against rotation. Pilot solenoid valve ( 1 ) according to claim 1, characterized in that the magnet pot made of a magnetic flux conducting material ( 10 ) also has a better thermal conductivity than plastic. Pilot solenoid valve ( 1 ) according to one of the preceding claims, characterized in that the pole core ( 8th ) a pressure medium line ( 4 ), which with the pressure medium lines ( 4 ) of the main valve body ( 2 ) cooperates to provide an exhaust duct. Valve block comprising at least two pilot solenoid valves ( 1 ) according to one of the preceding claims ( 1 ), wherein the valve block in one piece or from a plurality of interconnected individual pilot solenoid valves ( 1 ) is realized.