WO2015049054A1

WO2015049054A1 - Movable armature of a solenoid valve and solenoid valve equipped therewith

Info

Publication number: WO2015049054A1
Application number: PCT/EP2014/002684
Authority: WO
Inventors: Michael Ruthardt
Original assignee: Festo Ag & Co. Kg
Priority date: 2013-10-04
Filing date: 2014-10-02
Publication date: 2015-04-09
Also published as: CN105579752A; CN105579752B; DE102013016548B3

Abstract

The invention relates to a movable armature (2) of a solenoid valve (1) and to a solenoid valve (1) equipped with such an armature (2). The movable armature (2) contains an at least partially ferromagnetic armature body (19), which is equipped with at least one one-piece sealing and spring body (14, 15) made of an elastomer material. Said sealing and spring body (14, 15) combines a sealing element (16), which is provided for interacting with a valve seat (12, 13), and spring elements (18), which press the sealing element (16) continuously against a stop (22) formed on the armature body (19). The spring elements (18) enable a length compensation of the sealing element (16) in the event of swelling, wherein the one-piece design of the sealing and spring body (14, 15) has advantages in production and assembly.

Description

Moving armature of a solenoid valve and

equipped solenoid valve

The invention relates to a movable armature of a solenoid valve, having an at least partially ferromagnetic anchor body, with at least one arranged in the anchor body, consisting of an elastomeric sealing element which is pressed in an operating position of the armature under sealing to a valve seat of the solenoid valve, and with between the Sealing element and the anchor body acting, the sealing element against a stop arranged on the anchor body abutment spring means.

The invention further relates to a solenoid valve, with at least one valve seat and with a solenoid device, which is associated with a movable armature having an at least partially ferromagnetic anchor body in which an existing elastomeric sealing element is arranged in an operating position of the armature under seal can be pressed against a valve seat of the solenoid valve, wherein between the sealing element and the anchor body, the sealing element against a stop arranged on the anchor body abutting spring means are effective.

A known from DE 10 2009 022 538 AI known magnetic valve of the aforementioned type is equipped with a movable armature of the type mentioned, which is used as a valve member of the magnetic valves. By actuation of the solenoid device, the armature or the valve member can be switched to occupy different operating positions, which serve to influence the flow of a fluid, in particular the flow of compressed air. The solenoid valve is, for example, a 3/2 way valve whose valve member or armature can be positioned in two different operating positions, in which a valve channel connectable to a consumer is connected either to a feed channel providing a pressure medium or to a vent channel. In order to close a channel connection, an existing elastomeric material sealing element is arranged in the existing of a ferromagnetic material anchor member, which is pressed in the corresponding operating position of the armature with sealing to a valve seat of the solenoid valve. The sealing element is braced by spring means, which consist of a arranged in the interior of the anchor body mechanical support spring, with the anchor body.

A known from DE 85 30 286 Ul known solenoid valve is also equipped with a movable armature whose anchor body includes an acted upon by a mechanical spring element sealing element.

A known from DE 10 2006 022 561 AI known magnetic valve has a movable armature which is held in a position by means of a spring element and in another position by means of a permanent magnet. The armature has an anchor body, in which at one end a cooperating with a valve seat seal is used.

DE 10 2010 026 548 AI discloses an electromagnetic valve with a prestressed by a spring element plunger, in the front side, a sealing element is used. The Sealing element is held by means of a support member to the plunger so that it is movable relative to the plunger and depending on the relative position between the plunger and the sealing element, a sealing element passing through the channel is released or shut off.

From DE 10 2006 053 314 AI a solenoid valve is known, the valve member consists of a movable armature having a ferromagnetic anchor body, are embedded in the two existing elastomeric sealing elements. Depending on the operating position of the armature either the one or the other sealing element is pressed against a valve seat. Since the elastomeric material of the sealing elements tends to swell under the influence of oils and other liquids, functional impairments may result during operation of the solenoid valve when the fluid to be controlled is mixed with corresponding liquids, for example with lubricating oil. The swelling of the elastomeric material causes the overall length of the armature to increase, thereby reducing the armature stroke, which reduces the releasable channel cross-section.

The object of the invention is to take measures which counteract the problem of swelling elastomeric components of the movable armature of a solenoid valve.

To achieve this object, it is provided in a movable armature of the type mentioned that the spring means are made of an elastomeric material and combined together with the sealing element to a one-piece elastomeric material sealing and spring body. The object is achieved in both a movable armature and a solenoid valve of the type mentioned above in that the spring means are made of an elastomeric material and are combined together with the sealing element to a one-piece elastomeric material sealing and spring body.

The spring means clamping the sealing element with the anchor body allow the sealing element consisting of elastomeric material to increase the volume due to swelling without adversely affecting the armature stroke and thus the channel cross section of a fluid channel which can be released in a position lifted from a valve seat. The conditional by a swelling change in length of the sealing element is compensated by the spring means, which yield accordingly. The required relative to the sealing effect relative position between the sealing element and the anchor body is not affected, because the anchor body is still pressed by the spring means on the arranged on the anchor body stop. Particularly advantageous in the invention, the one-piece design of the sealing element and the spring means, the components of an existing elastomeric material

one-piece combined sealing and spring body are. In this way, the manufacture and assembly of the armature are considerably simplified. The sealing and spring body can be manufactured as a unit in a single manufacturing process and also combined as a unit in a single assembly process with the anchor body to the anchor. The integrated design of the sealing and spring body also allows the realization of very small dimensions, which allows the use even with very small-sized solenoid valves with very small-sized anchor types. The invention can be used, for example, in conjunction with a rod anchor or realized as a plate anchor or anchors designed as hinged armature. Especially with plate anchors, the compact size of the sealing and spring body proves to be advantageous because the anchor body of a plate anchor usually builds very shallow and thus there is little installation space for a sealing and spring body available.

Advantageous developments of the invention will become apparent from the dependent claims.

The one-piece sealing and spring body expediently has a longitudinal axis, wherein a sealing surface is formed on the sealing element, which is oriented in the axial direction of said longitudinal axis and which serves to be pressed against a valve seat of the solenoid valve for shutting off a channel connection of the solenoid valve , The spring means integrated in the sealing and spring body are also effective in the axial direction of said longitudinal axis.

The integrated in the sealing and spring body sealing element has expediently in the axial direction of the longitudinal axis of the sealing and spring body has a lower elasticity than the spring means also integrated into the sealing and spring body spring means. In this way it is ensured that the spring means can give targeted due to their greater elasticity when the sealing element due to swelling and its support to the stop of the anchor body a

Elongation learns.

The spring means are in particular designed so that they project in the axial direction of the longitudinal axis of the sealing and spring body like a collar of the sealing element. In particular, in this context, it is advantageous if the spring means are structured sleeve-shaped or annular. It exists also the possibility of forming the spring means so that they are segmented to form individual spring sections. For example, the spring means can be segmented around the longitudinal axis of the sealing and spring body and consist of individual, in the circumferential direction with spaced-apart spring segments, which are integrally formed with the sealing element to form the one-piece sealing and spring body.

The sealing element is suitably made of solid material. In this way, it has a particularly high rigidity compared to the less stiff, the spring means forming portion of the sealing and spring body.

Depending on the configuration, the anchor body may be equipped with only one or more independent sealing and spring bodies. A plurality of sealing and spring bodies are arranged in particular in the anchor body, that they can cooperate with different valve seats of a solenoid valve, in particular alternately such that each one of the sealing and spring body rests sealingly against a valve seat, while the respective other sealing and spring body is lifted from the associated valve seat.

In favor of a simple assembly of the sealing and spring body is suitably received in a blind hole-like recess of the anchor body and by the with the

Sealing element cooperating stop held in the recess. Preferably, the stop is at least one arranged on the anchor body and an opening of the recess defining radial projection, which is preferably an annular projection. In a particularly simple embodiment, the anchor body is integrally formed. In addition, however, there is also the advantageous possibility of a multi-part construction of the anchor body, in particular such that it has a recess for receiving a sealing and spring body defining the main body and beyond a separate stop body which defines the cooperating with the sealing element stop and on suitable manner is attached to the main body.

The main body may be provided with a plurality of stopper bodies to simultaneously hold a plurality of sealing and spring body. But it is also possible to equip the main body with two sealing and spring bodies, of which only one is fixed by means of a separate stop body, while the other sealing and spring body is held by a stop integrally formed with the main body.

The invention will be explained in more detail with reference to the accompanying drawings. In this show:

Figure 1 shows a longitudinal section through a preferred embodiment of the solenoid valve according to the invention, which is equipped with an anchor according to the invention preferred structure, wherein the dash-dotted framed neckline is shown separately enlarged again, and

2 shows a cross section through the armature of the solenoid valve of Figure 1 at right angles to its longitudinal axis in a sectional plane according to II-II of Figure 1. From the drawing, a generally designated reference numeral 1 solenoid valve is visible, which is equipped with a movable armature 2, which forms a valve member 3 of the Mag netventils 1. An electromagnetic device 4 of Mag netventils 1 is by appropriate electrical actuation able to cause a indicated by a double arrow switching movement 5 of the armature 2 and valve member 3 and to ensure that the armature 2 and the valve member 3 assumes different operating positions, the un different switching states of the solenoid valve 1 define

In the following, only the term "anchor" is generally used, although this also means the function of the armature 2 as a valve member 3.

The armature 2 of the exemplary solenoid valve 1 is designed as a rod anchor and has an elongated, rod-like shape with a longitudinal axis 6. Alternative, not illustrated types of solenoid valve 1 according to the invention include an anchor designed as a hinged armature, the switching movement is a folding or pivoting movement, or contain a Plate anchor as an anchor, which has a substantially plate-shaped shape and in which the switching movement 5 rechtwin kelig oriented to the plate plane.

The solenoid valve 1 has a solenoid device 4 having, generally designated by reference numeral 7 basic unit, with respect to the armature 2 in the context of its switching movement 5 is movable, wherein the switching movement in the imple mentation example is a linear movement. By way of example, the switching movement 5 is oriented in the axial direction of the longitudinal axis 6 of the armature 2. The basic unit 7 is penetrated by a plurality of valve channels 8, which are controllable in terms of their mutual fluidic Ver ^¬ binding and separation through the valve member. 3

Below the valve channels 8 are a first valve channel 8a and a second valve channel 8b. In one of the

Drawing apparent first operating position of the armature 2, the fluid connection between these two valve channels 8a, 8b is interrupted. The armature 2 may also assume a different from the first operating position second operating position in which the fluid connection between the first valve channel 8a and the second valve channel 8b is released.

The number of controllable by the armature 2 valve channels 8 can be limited to two. In this context, the solenoid valve 1 is then designed in particular as a 2/2 way valve. In a likewise advantageous design, which is realized in the embodiment, it is in the solenoid valve 1 is a 3/2-way valve, which in addition to the two already mentioned first and second valve channels 8a, 8b still has a third valve channel 8c, in the first operating position of the armature 2 is connected to the second valve channel 8b separated from the first valve channel 8a and is separated in the second operating position of the armature 2 from the other two valve channels 8a, 8b. In an expedient use of the valve channels 8, the first valve channel 8a is a feed channel connectable to an external pressure source, the second valve channel 8b is a working channel 8b connectable to an external consumer to be actuated, and the third valve channel 8c is a discharge channel connected to the atmosphere in which it is located is a vent passage when the solenoid valve 1 for controlling compressed air is used, which is the preferred use of the solenoid valve 1. Deviating from this, however, the solenoid valve 1 can also be used to control liquid pressure media.

The armature 2 is movably received in a valve chamber 9 formed in the interior of the basic unit 7. All valve channels 8 open into this valve chamber 9 a.

The armature 2 has two oppositely oriented in the axial direction of the longitudinal axis 6 first and second end faces 10, 11. The first end face 10 is the channel mouth of the first valve channel 8a opposite, which is framed by a armature 2 facing the first valve seat 12. The second end face 11 is opposite to the channel mouth of the third valve channel 8c, which is surrounded by a second valve seat 13, which also faces the armature 2. Both valve seats 12, 13 each are suitably collar-shaped and project towards the armature 2 in the axial direction of its longitudinal axis 6.

In one embodiment, as a 2/2 way valve of the solenoid valve 1 of course eliminates the second valve seat thirteenth

Each valve seat 12, 13 is associated with a one-piece sealing and spring body 14, 15 of the armature 2. The armature 2 includes two sealing and spring bodies 14, 15, one of which (14) cooperates with the first valve seat 12 and the second (15) with the second valve seat 13. The solenoid valve 1 has only a single valve seat, the armature 2 is expediently equipped with only a single sealing and spring body. Each sealing and spring body 14, 15 is located on that end face 10, 11 of the armature 2, which is opposite to one of the valve seats 12, 13. Each sealing and spring body 14, 15 contains a sealing element 16 consisting of an elastomeric material, which has a sealing surface 17 facing the associated valve seat 12, 13, which seals against the respectively opposite valve seat 12, 13 when the armature 2 assumes a corresponding operating position.

In addition to the two integral, rubber-elastic sealing and spring bodies 14, 15, the armature 2 also contains an at least partially and in the embodiment in its entirety ferromagnetically trained anchor body 19. The anchor body 19 has at each with a sealing and spring body 14, 15 equipped end face 10, 11, a blind hole-like recess 20, 21, in which the associated sealing and spring body 14, 15 is suitably added in its entirety.

During the switching movement 5, the anchor body 19 and the two sealing and spring bodies 14, 15 are each moved uniformly.

In order to retain the sealing and spring body 14, 15 in the respectively associated recess 20, 21, the anchor body 19 is provided with a corresponding stop 22, 23. Preferably, the stopper 23 is formed in each case by a radial projection 24, which framed a arranged on the respective end face 10, 11 opening 25 of the associated recess 20, 21, whose diameter is slightly smaller than that of an axially adjacent receiving portion 26 of the recess 20, 21st in which the associated sealing and spring body 14, 15 is received. The sealing and spring body 14, 15 is supported with its sealing element 16 on the axially facing surface of the associated stop 22, 23 from. In this case, the sealing element 16 is pressed by spring means 18 constantly in the direction of the associated valve seat 12, 13 to the stop 22, 23. The spring means 18 are designed so that they press the sealing element 16 regardless of the operating position of the armature 2 to the stop 23 and hold in contact with this stop 23. It is not intended that the sealing element 16 lifts off during operation of the solenoid valve 1 of the stop 22, 23.

Advantageously, the spring means 18 as the sealing element 16 made of an elastomeric material. They are like the associated sealing element 16 integrally interconnected components or sections of the sealing and spring body 14, 15. It can therefore be said that the sealing and spring body 14, 15 is a one-piece elastomeric component, the one

Sealing element 16 forming sealing portion and a spring means 18 forming spring portion, said two portions are components of a one-piece component in the form of the sealing and spring body 14, 15.

The spring means 18 are effective between the sealing element 16 and the anchor body 19. The direction of action of the spring means 18 coincides with the direction of movement of the switching movement 5 and by way of example with the axial direction of the longitudinal axis 6. In addition, the sealing surface 17 is the same orientation as the effective direction of the spring means 18th

Preferably, the sealing and spring body 14, 15 has an elongated shape. The sealing and spring body 14, 15 has a longitudinal axis 27 whose orientation coincides with the direction of the switching movement 5. The sealing surface 17 is expediently oriented in the axial direction of this longitudinal axis 27. The sealing element 16 is pressed by the associated spring means 18 in the axial direction of the longitudinal axis 27 to the stop 23.

To support with respect to the anchor body 19, the spring means 18 cooperate in the embodiment with the axial

Conveniently, the sealing and spring body 14, 15 in such a way in the recess 20, 21 or in the receiving portion 26 installed that the spring means 18 are biased or have a certain precompression, so that the sealing and spring body 14, 15 is clamped under elastic prestress between the stop 23 and the axial base surface 28 of the recess 20, 21. In this case, the sealing surface 17 comes to rest in the region of the opening 25 or faces it. The sealing surface 17 is accessible through the respective opening 25 therethrough.

In the apparent from the drawing first operating position of the armature 2 is positioned so that its first valve seat 12 associated first sealing and spring body 14 rests with its sealing surface 17 on the opposite first valve seat 12 under sealing. In this way, the first valve channel 8a is closed. In this first operating position, the second sealing and spring body 15 is lifted off the associated second valve seat 13 so that the third valve channel 8c is fluidically connected to the valve chamber 9 and laterally communicate past the armature 2 through the valve chamber 9 with the second valve channel 8b can.

In the second operating position, the conditions are just the opposite. Here then lies the second sealing and spring body 15 with the sealing surface 17 of its sealing element 16 under Ab- Seal on the second valve seat 13, while at the same time the armature 2 and thus also the first sealing and spring body 14 has lifted from the first valve seat 12, so that through the valve chamber 9 through a fluid connection between the first valve channel 8a and the second valve channel 8b is made ,

In order to obtain the desired Abdichtqualität, the armature 2 is pressed in each of its a sealing purposeful operating positions with a certain holding force to the associated valve seat 12, 13. The holding force is introduced from the outside into the anchor body 19 and transmitted from the latter via the spring means 18 to the respective associated sealing element 16. The elasticity of the spring means 18 is chosen so that the biasing force exerted by them on the sealing element 16 is greater than the holding force, so that it is ensured that the sealing element 16 does not lift off the associated stop 23 when it is against the opposite valve seat 12, 13 is pressed due to the acting holding force.

On the other hand, however, the spring means 18 are able to compensate for volume changes of the sealing element 16, which are associated with an extension of the sealing element 16 in the axial direction of its longitudinal axis 27. Elastomer material tends in contact with liquid media, such as oils, to a swelling, which is expressed in the embodiment in that the sealing element 16 at right angles to the sealing surface 17, so in the axial direction of the longitudinal axis 27, an increase in length. Due to the inventive design, however, this change in length of the sealing element 16 does not lead to an extension of the armature 2 as such, because the sealing element 16 and in particular the sealing surface 17 by the stop 23 at an extent in Direction to the opposite valve seat 12, 13 is prevented. Instead, the extension of the sealing element 16 in the direction of the spring means 18 and in the direction of the axial base surface 28 of the recess 20, 21 acts. Thus, during the extension of the sealing element 16, the axial distance between the sealing element 16 and the base surface 28 of the recess 20, 21 functioning as the axial supporting surface 28a for the spring means 18 is reduced. This expansion is made possible by the elasticity of the spring means 18. In the enlarged section of Figure 1 is indicated by dashed lines at 29, as the sealing element 16 has extended axially due to swelling and how in conjunction with the spring means 18 have experienced a deformation or compression.

Thus, despite the swelling of the sealing element 16, it is achieved that the sealing element 16 can rest against the associated valve seat 12, 13 with a defined sealing force. In addition, it is achieved that despite the swelling of the sealing element 16, the axial relative position between the sealing surface 17 and the anchor body 19 does not change, so that a constantly large flow cross-section is always released when the armature 2 is positioned so that a sealing element 16 from the associated Valve seat 12 or 13 has lifted.

In order to obtain the desired functionality, the sealing element 16 is expediently provided in the axial direction of the longitudinal axis 27 with a lower elasticity than the spring means 18 embodied in one-piece structural unit with the sealing element 16. This can be realized, for example, by acting as a sealing and spring body 14, 15 employs an elastomeric component, in which the portion forming the spring means 18 is made of a softer elastomer material than that defining the sealing element 16 Sealing portion. However, it is easier and more advantageous to achieve the different flexibility by a different structuring of the sealing element 16 and the spring means 18. In this case, the sealing and spring body 14, 15, which is the case in the embodiment, consist overall of a uniform elastomeric material.

In the embodiment, the sealing element 16 is block-shaped or plate-shaped. It has expediently outside a circular cross-sectional contour. It is preferably designed circular cylindrical. It is also advantageous if the sealing element 16 consists of a solid material.

The spring means 18 close in the embodiment of the sealing surface 17 axially opposite end side, ie the back, to the sealing element 16 in one piece. They are expediently structured sleeve-shaped or ring-shaped, wherein they protrude in particular collar-shaped axially from the sealing element 16. In the unassembled state, the spring means 18 expediently have a cylindrical or slightly concave on the outer circumference shaped shape, and after installation in the anchor body 19, as shown in the drawing, due to the axial bias a little further radially constricted.

Preferably, the spring means 18 are arranged coaxially with the sealing element 16.

It is furthermore advantageous if the spring means 18 designed as a sleeve or ring structure are segmented in the circumferential direction of the longitudinal axis 27 to form individual spring segments 18a. This applies to the embodiment and is especially clear from Figure 2. The individual spring segments 18a protrude axially from the sealing element 16, as in the case of arms, and are arranged in the circumferential direction of the longitudinal axis 27 at a distance, wherein an air gap 30 is expediently located between spring segments 18a adjacent in the circumferential direction.

It is understood that in particular the spring means 18 may be structured in other ways, such as bellows or helical.

Due to the one-piece construction, the sealing and spring body 14, 15 can be very easily manufactured and mounted in the anchor body 19. The embodiment illustrates two possible ways of mounting the sealing and spring body 14, 15. Overall, the armature body 19 is formed in several parts in the embodiment, wherein it has a respective recess 20, 21 defining the main body 31. The stop 23, as illustrated in connection with the second sealing and spring body 15, be an integral part of this main body 31, so that the entire sacklochar- term recess 21 of the main body 31, that is defined by an integral part of the anchor body 19 becomes. For mounting in the associated recess 21, the sealing and spring body 15 is briefly radially compressed here and pushed through the opening 25 into the associated recess 21. The sealing and spring body 15 is snapped in particular. This is possible if the sealing and spring body 14, 15, in particular in the region of its sealing element 16, has sufficient flexibility.

Alternatively, it is also possible, the stopper 22, as illustrated in connection with the first sealing and spring body 14, as part of a respect the main body 31 to realize separate stopper body 32 which is fixed to the main body 31, after previously the sealing and spring body 14 has been inserted into the associated recess 20. The stopper body 31 is, for example, an annular body and can be mounted coaxially on the main body 31 and / or screwed.

Preferably, both the main body 31 and the stopper body 32 are made of a ferromagnetic material, that is to say a material which conducts a magnetic field very well.

The basic unit 7 is expediently constructed in several parts. By way of example, it has a channel body 7a penetrated by the first valve channel 8a and the second valve channel 8b and the electromagnet device 4 mounted on the channel body 7a. The third valve channel 8c is expediently formed in the electromagnet device 4.

The electromagnetic device 4 includes a coil assembly 33 constructed of a wound coil wire, which is connected to an electromechanical connection device 34 to which an operating voltage can be applied. The coil assembly 33, which consists in the embodiment of a single coil, sits conveniently on a bobbin 35 which is fixed to the channel body 7a. The coil carrier 35 contains by way of example a tube element 36 fixed to the channel body 7a and a magnetic core 37 fixed to the tube element 36 at the end opposite the channel body 7a and made of a ferromagnetic material. The tubular element 36, the magnetic core 37 and the channel body 7a jointly delimit the valve chamber 9. The valve chamber 9 consists in part of a recess 38 formed in the channel body 7a. The first valve seat 12 is arranged at the bottom of the recess 38 on the channel body 7a. The second valve seat 13 is located on the magnetic core 37, which is penetrated by the third valve channel 8 c.

Around the coil assembly 33 extends around a markable as a magnetic yoke magnetic return device 39 which is formed in the embodiment U-shaped, with her one leg in the region of the base unit stationary magnetic core 37 and their other

Leg is penetrated by the tubular element 36 and the armature 2 movably received therein.

Expediently, the magnetic return device 39 and the coil arrangement 37 are combined to form an actuating unit 40 in that they are accommodated in an enveloping sleeve 41 of the electromagnet device 4. Conveniently, the cladding sleeve 41 is made of a plastic material, with which the coil assembly 33 and the magnetic return device 39 are encapsulated.

For assembly, the actuating unit 40 is attached to the unit consisting of the tubular element 36 and the magnetic core 37 and is fixed by a fastening nut 42, which is supported on the actuating unit 40 and screwed onto an external thread of the magnetic core 37. By means of a arranged in the interior of the valve chamber 9 return spring 43 of the armature 2 is constantly biased in a basic position, which is exemplified by the first operating position. By actuation of the electromagnet device 4, which is done by energizing the coil assembly 33, a magnetic field can be generated, by which the armature 2 is attracted to the stationary magnetic core 37, so that it under execution of a switching movement 5 in the second operating position is shifted. When removing the operating voltage of the armature 2 returns due to the restoring force of the return spring 43 back to the first operating position. In the first operating position so the holding force for the armature 2 is applied by the spring force of the return spring 43, in the second operating position by the spring force of the return spring 43 overcoming magnetic force of the electromagnetic device. 4

Claims

claims

1. Movable armature of a solenoid valve, with an at least partially ferromagnetic anchor body (19), with at least one in the anchor body (19) arranged, consisting of an elastomeric sealing element (16) in an operating position of the armature (2) with a seal to a Valve seat (12, 13) of the solenoid valve (1) can be pressed, and with between the sealing element (16) and the anchor body (19) acting, the sealing element (16) against a on the anchor body (19) arranged stop (22) andrückenden spring means ( 18), characterized in that the spring means (18) consist of an elastomeric material and together with the sealing element (16) to a one-piece elastomeric material sealing and spring body (14, 15) are summarized.

2. An anchor according to claim 1, characterized in that the sealing element (16) of the one-piece sealing and spring body (14, 15) to a valve seat (12, 13) of the solenoid valve (1) andrückbare sealing surface (17), which the Same orientation as the direction of action of the sealing element (16) acting spring means (18).

3. An anchor according to claim 1 or 2, characterized in that the one-piece sealing and spring body (14, 15) has a longitudinal axis (27), wherein the sealing element (16) for pressing against a valve seat (12, 13) provided sealing - surface (17), which is oriented in the axial direction of the longitudinal axis (27).

4. An anchor according to claim 3, characterized in that the sealing element (16) in the axial direction of the longitudinal axis (27) of the sealing and spring body (14, 15) has a lower elasticity than the spring means (18).

5. An anchor according to claim 3 or 4, characterized in that the spring means (18) project in the axial direction of the longitudinal axis (27) of the sealing and spring body (14, 15) like a collar of the sealing element (17).

6. An anchor according to one of claims 1 to 5, characterized in that the biasing force of the between the at the stop (22) supported sealing element (17) and the anchor body (19) acting spring means (18) is greater than one from the outside in the Anchor body (19) introduced, the sealing element (16) to a valve seat (12, 13) andrückende holding force, wherein the holding force in particular by a return spring (43) and / or a solenoid device (4) of the solenoid valve (1) is caused.

7. An anchor according to any one of claims 1 to 6, characterized in that the spring means (18) have a sleeve or ring structure.

8. An anchor according to one of claims 1 to 7, characterized in that the spring means (18) are segmented to form individual spring segments (18 a).

9. An anchor according to one of claims 1 to 8, characterized in that the sealing element (16) consists of solid material.

10. An anchor according to any one of claims 1 to 9, characterized in that in the anchor body (19) independently of each other a plurality of sealing and spring bodies (14, 15) are arranged, which for cooperation with different valve seats (12, 13) of a solenoid valve ( 1) are formed.

11. An anchor according to one of claims 1 to 10, characterized in that the sealing and spring body (14, 15) received in a blind hole-like recess of the anchor body (19) and by the stop (22) in the recess (20, 21) is held, wherein the stop (22) expediently of at least one of the anchor body (19) arranged and an opening (25) of the recess (20, 21) defining radial projection (24) is formed.

12. An anchor according to claim 11, characterized in that the anchor body (19) is formed in several parts, wherein it has a recess (20, 21) defining the main body (31) and a stop (22) defining the annular abutment body (32), which is fixed to the main body (31).

13. Anchor according to claim 11 or 12, characterized in that at least one sealing and spring body (15) in a blind hole-like recess (21) is accommodated, in its entirety including the stopper (22) of an integral part of the anchor body (19 ) is formed.

14. An anchor according to any one of claims 1 to 13, characterized in that it is designed as a rod anchor or as a plate anchor or as a hinged armature.

15. Solenoid valve, with at least one valve seat (12, 13) and with a solenoid device (4), which has a movable Anchor (2) is associated, which has an at least partially ferromagnetic anchor body (19) in which an elastomeric material consisting of a sealing element (16) is arranged in an operating position of the armature (2) sealed to a valve seat (12, 13) of the solenoid valve (1) can be pressed, wherein between the sealing element (16) and the anchor body (19) the sealing element (16) against a on the anchor body (19) arranged stop (22) pressing spring means (18) are effective, characterized in that the spring means (18) also consist of an elastomeric material and are combined together with the sealing element (16) to form an integral sealing and spring body (14, 15) made of elastomeric material.

16. Solenoid valve according to claim 15, characterized in that the armature (2) is designed according to one of claims 1 to 14.