Solenoid valve and driver assistance system

Abstract

Solenoid valve (1) with a magnet armature (2) which is operatively connected to a sealing element (5) of the magnet valve (1) for its displacement, and with an armature counterpart (16) which engages at least partially in a receiving opening (23) of the magnet armature (2), wherein the armature counterpart (16) consists of a pole core (19) and an intermediate component (20) supported on the pole core (19), wherein only the intermediate component (20) is arranged at least partially in the receiving opening (23) and at least one vent opening (33, 36) is formed in the intermediate component (20) which establishes a fluid connection between the receiving opening (23) and an environment of the magnet armature, wherein a spring element (24) is provided in the receiving opening (23) and the intermediate component (20) has a guide device (28) for the spring element (24), characterized in that the vent opening (36) is designed as an open-edged recess is formed,which opens in the direction of a peripheral surface (37) of the intermediate component (20), wherein the guide device (28) has the vent opening (36) at least in some areas.

Description

[0001] The invention relates to a solenoid valve with a magnet armature which is operatively connected to a sealing element of the magnet valve for the displacement thereof, and with an armature counterpart which engages at least partially in a receiving opening of the magnet armature, wherein the armature counterpart consists of a pole core and an intermediate component supported on the pole core, wherein only the intermediate component is arranged at least partially in the receiving opening and at least one vent opening is formed in the intermediate component, establishing a fluid connection between the receiving opening and an environment of the magnet armature, wherein a spring element is provided in the receiving opening and the intermediate component has a guide device for the spring element. State of the art

[0002] Solenoid valves of the type mentioned above are known from the prior art. They are used, for example, for driver assistance systems, i.e., particularly in connection with ABS, TCS, or ESP systems. The solenoid valves are designed, for example, as 2 / 2-way valves, which can be open or closed when de-energized. In such a solenoid valve, the sealing element is typically arranged such that it can be displaced in its axial direction in order to cooperate sealingly with a valve seat of the solenoid valve in a closed position, thus interrupting a fluid flow connection through the solenoid valve. If, however, the sealing element is displaced into a release position, it releases the valve seat, allowing fluid to flow through the solenoid valve, thus establishing the fluid flow connection. The sealing element is displaced by means of a magnet armature.For this purpose, the solenoid armature is located in the area of ​​at least one coil. When the coil is de-energized, the solenoid armature is in its initial position, which can be the closed position (normally closed solenoid valve) or the released position (normally open solenoid valve). The sealing element is operatively connected to the solenoid valve, for example, by a rigid connection.

[0003] The armature, together with its armature counterpart, forms a magnetic part of the solenoid valve. The armature and armature counterpart are arranged relative to each other so that the end faces of the two elements face each other. For example, the armature and armature counterpart are aligned such that a respective longitudinal axis runs coaxially or parallel to a longitudinal axis of the solenoid valve. The armature counterpart can be assigned to the solenoid valve's coil.

[0004] It is known from the prior art that the end faces of the magnet armature and the armature counterpart are flat and run essentially parallel to one another. However, it is also known to provide either the magnet armature or the armature counterpart with a receiving opening, with the other element engaging at least partially in this receiving opening. For example, it can be provided that the magnet armature has the receiving opening and the armature counterpart engages at least partially in this receiving opening. Conversely, it is of course also possible for the armature counterpart to have the receiving opening, with the magnet armature engaging at least partially in this receiving opening.

[0005] In this case, it is merely intended that the at least partial engagement is ensured in at least one position of the magnet armature or the sealing element. Accordingly, it can also be provided that the armature counterpart is arranged completely outside the receiving opening of the magnet armature in at least one position. A so-called immersion stage is formed by the receiving opening of the magnet armature and the armature counterpart engaging therein (or the receiving opening of the armature piece with the magnet armature arranged therein at least partially), i.e., the intermeshing of the magnet armature and the armature counterpart.

[0006] It is known from the prior art to design the submersible stage as a single-submersible stage or as a double-submersible stage or multiple-submersible stage. In the former case, the receiving opening has constant dimensions along its axial extent, at least in the area accommodating the anchor counterpart. In contrast, in the double-submersible stage, the receiving opening is designed with two different dimensions along its axial extent, with the anchor counterpart being matched to these dimensions, i.e., also having different dimensions. Of course, it is also possible to design a multiple-submersible stage with any number of dimensional increments.

[0007] When arranging the armature counterpart in the receiving opening of the armature, the armature counterpart and the armature must not touch each other in the radial direction. Therefore, a radial gap, e.g., an annular gap, is formed between the two elements. For this reason, precise guidance of the armature must be ensured in such a submerged stage. This typically leads to high tolerance requirements for many parts of the solenoid valve, particularly for the armature and the armature counterpart, as well as for the guidance or bearing of the armature in the solenoid valve. For this reason, the manufacture of such a solenoid valve is comparatively complex and therefore cost-intensive.

[0008] For example, US Pat. No. 5,423,602 A is known from the prior art. This describes a pressure control valve for a pressure boosting valve of an automotive anti-lock braking system, comprising a valve housing, a solenoid coil attached to the valve housing, a piston slidably received in the valve housing, which has a main valve portion at one end for closing the valve by means of the solenoid coil, and a return spring arranged in the housing, which urges the piston in a valve-opening direction. The pressure control valve comprises a damper-like device arranged at the other end of the piston to dampen movement of the piston in the valve-opening direction.

[0009] The prior art also includes the document US 2004 / 0 261 771 A1 and the subsequently published document DE 10 2009 055 172 A1. Disclosure of the invention

[0010] In contrast, the solenoid valve with the features mentioned in claim 1 has the advantage of being simpler and more cost-effective to manufacture. To this end, the invention provides that the vent opening is designed as an open-edged recess that opens toward a circumferential surface of the intermediate component, wherein the guide device has the vent opening at least in some areas.

[0011] Basically, the armature counterpart is intended to consist of a pole core and an intermediate component supported on the pole core, with only the intermediate component being arranged at least partially in the receiving opening and at least one vent opening being formed in the intermediate component, establishing a fluid connection between the receiving opening and the area surrounding the magnet armature. A multi-part, in particular two-part, design of the armature counterpart is therefore provided. In this way, the solenoid valve can be equipped with a plunger stage, while at the same time ensuring simple and cost-effective production. The plunger stage improves the adjustability of the solenoid valve or the magnet armature compared to a design of the magnet armature and armature counterpart with flat end faces.In particular, this results in a flatter, more linear characteristic curve of the solenoid valve - in which the actuating force or magnetic force is plotted over a distance from the armature to the armature counterpart. The intermediate component is usually only placed on the pole core and is therefore not firmly connected to it. The intermediate component therefore only rests on the pole core or is pushed towards the pole core by the armature or a spring element assigned to it. With this type of design of the armature counterpart consisting of the pole core and the intermediate component, the pole core does not engage in the receiving opening of the armature. Advantageously, the pole core and armature are spaced apart from one another, but they can also rest against one another with their end faces.In an advantageous embodiment of the solenoid valve, the intermediate component is designed as a multiple immersion stage, i.e., it has at least two different dimensions in the axial direction. For example, a region of the intermediate component facing the pole core can be present as a support element, with which the intermediate component rests on the pole core, and a further region facing the magnet armature can be present as a guide device, with which, for example, a guide for a spring element acting between the intermediate component and the magnet armature is formed. In this embodiment, the characteristic curve of the solenoid valve can also be improved compared to a solenoid valve with a single immersion stage known from the prior art. In principle, the solenoid valve according to the invention can achieve a large number of identical parts to other solenoid valves.In particular, part and assembly tolerances remain unchanged compared to solenoid valves, where the armature and armature counterpart only have flat end faces. This provides a cost advantage over solenoid valves with single or multiple immersion stages, while achieving better adjustability and an optimized characteristic curve. The end faces of the armature and armature counterpart are commonly referred to as pole faces. It is particularly advantageous if the intermediate component and the pole core are made of the same material.

[0012] When the magnet armature is moved towards its counterpart, the intermediate component is moved further into the receiving opening. Conversely, the intermediate component can be moved towards the opening of the receiving opening or through it if the magnet armature moves away from its counterpart or the pole core. Due to the arrangement of the intermediate component in the receiving opening, the space created by the intermediate component in the receiving opening is fluid-insulated from the environment of the magnet armature. This means that fluid cannot initially flow between the space and the environment. If the intermediate component is moved in the receiving opening, the volume of the space changes. Thus, since the fluid can neither get into nor out of the space, a fluid pressure can be present in the space, which counteracts any movement of the intermediate component in the receiving opening.This is detrimental to the adjustability of the solenoid valve, as the switching times achievable with the solenoid valve are limited by the maximum possible displacement speed of the intermediate component in the receiving opening. For this reason, the vent opening is provided to establish the fluid connection between the receiving opening or the space enclosed by the intermediate component and the environment. This vent opening is formed in or on the intermediate component. With a suitable geometry of the intermediate component, a streamlined guidance of the fluid through the vent opening and thus low flow resistance when the fluid flows out of or into the receiving opening can be achieved.

[0013] A further development of the invention provides that the magnet armature is displaceable by means of a coil and the armature counterpart is arranged essentially stationary in the solenoid valve. The solenoid valve therefore has the coil in the region of which the magnet armature is arranged. The magnet armature is axially displaceable relative to other regions of the solenoid valve, in particular the armature counterpart. The armature counterpart is, for example, assigned to the coil of the solenoid valve and is arranged essentially stationary. When the solenoid valve is displaced, this therefore occurs essentially relative to the armature counterpart. In its closed position, the magnet armature is, for example, spaced from the armature counterpart, whereas in its release position the distance between the magnet armature and armature counterpart is reduced or these two elements rest against one another with their end faces.

[0014] A further development of the invention provides that the intermediate component is provided at a radial distance from an inner wall of the receiving opening, wherein the vent opening is formed. In such an embodiment, the same applies to the intermediate component as to the entire armature counterpart when forming a diving stage. Contact between the armature counterpart and the magnet armature in the radial direction would impair the functionality of the solenoid valve, so this should be avoided. This should also be the case for the intermediate component. By spacing the intermediate component from the inner wall of the receiving opening in the radial direction, a first embodiment of the vent opening can be present. This means that the fluid can flow between the intermediate component and the inner wall.Accordingly, the vent opening is formed jointly by an outer wall of the intermediate component and an inner wall of the receiving opening.

[0015] It is provided that the vent opening extends through a circumferential surface of the intermediate component in the radial direction, at least in some regions. According to the invention, the vent opening is designed as an open-edged recess in the intermediate component, opening in the direction of the circumferential surface of the intermediate component. The vent opening can have any orientation. For example, it can run through the intermediate component in the axial direction, or obliquely (i.e., at an angle > 0° to the axial direction), or curved. Of course, the vent opening can also have several regions with different alignments or orientations. Advantageously, it is provided that the vent opening only extends through some regions of the circumferential surface. This means that it does not extend over the entire circumference of the intermediate component.In an advantageous embodiment, several vent openings are provided, which are distributed, in particular evenly, over the circumference of the intermediate component. Advantageously, an even number of vent openings is provided, with two of the vent openings being diametrically opposite each other.

[0016] A further development of the invention provides that the vent opening is open at the edge and / or extends through an end face of the intermediate component facing the magnet armature. As already stated above, the vent opening can be open at the edge. Additionally or alternatively, it is provided that it extends through the end face of the intermediate component facing the magnet armature. Advantageously, only this end face of the intermediate component is penetrated, while an end face opposite the penetrated end face is not covered by the vent opening. This opposite end face is usually a support surface with which the intermediate piece is in supporting contact with the pole core.

[0017] A further development of the invention provides that the vent opening has a fluid guide surface which runs at least partially in the axial direction on the side of the intermediate component facing the magnet armature and at least partially in the radial direction on its opposite side, wherein in particular a curved course of the fluid guide surface is provided between the two sides. Fluid flowing through the vent opening flows along the fluid guide surface. This therefore performs a guiding function for the flowing fluid. The fluid guide surface should now be arranged such that it runs in the axial direction on one side and in the radial direction on the other side. To implement the axial direction, the surface normal of the fluid guide surface points in the radial direction, while for the course in the radial direction it points in the axial direction.Thus, an axial flow is provided on the side of the intermediate component facing the magnet armature, and a radial flow on the opposite side. Advantageously, the curved profile of the fluid guide surface is provided between the two sides. This ensures a streamlined fluid flow, thus minimizing flow losses.

[0018] A further development of the invention provides for a plurality of vent openings distributed over the circumference of the intermediate component. Advantageously, the vent openings are evenly distributed.

[0019] The invention provides that a spring element is provided in the receiving opening and the intermediate component has a guide device for the spring element. The spring element serves in particular to urge the magnet armature towards its starting position. The spring element causes a corresponding spring force which acts on both the armature counterpart and the magnet armature in order to displace the magnet armature towards its starting position. For example, the receiving opening can be designed as a blind opening and the spring element can be supported on a base of the blind opening. It is therefore provided that the receiving opening does not completely penetrate the magnet armature in the axial direction, but merely exists as a blind opening or pocket. The blind opening therefore has the base which limits it in the axial direction of the magnet armature.The spring element rests on this base to exert the spring force that urges the magnet armature into its initial position. Advantageously, the base of the blind opening is essentially flat or aligned with the spring element, thus preventing displacement or slipping of the spring element within the blind opening, particularly in the radial direction. For example, it can be provided that the spring element engages the intermediate component with a side facing the armature counterpart.

[0020] The spring element arranged in the receiving opening of the magnet armature is therefore supported on the intermediate component with the side facing the armature counterpart. In this case, it rests, for example, on a flat surface facing the magnet armature or the base of the blind opening. It is advantageous if this surface and the base of the blind opening are essentially parallel to one another, at least in the areas in which the spring element is supported on them. The spring element is therefore preferably provided to urge the magnet armature away from the intermediate component and thus from the armature counterpart. The spring force of the spring element can consequently cause the magnet armature to move away from the armature counterpart.

[0021] In addition, the intermediate component should have the guide device for the spring element. In order to guide the spring element, particularly in the radial direction, and to prevent the spring element from buckling, the guide device is provided on the intermediate component. The guide device can be designed, for example, as an axial projection which extends from a support element of the intermediate component in the direction of the magnet armature. The support element serves to support the intermediate component on the pole core. Ideally, the support element and the guide device have different dimensions in the radial direction in order to design the intermediate component in the sense of a multiple immersion stage. If the intermediate component and the receiving opening are round or circular, the support element and guide device have, for example, different diameters.If the spring element is in the form of a spiral spring, the guide device advantageously engages in an inner region of this spiral spring in order to support or stabilize it in its axial direction.

[0022] The invention provides that the guide device has the vent opening at least in some areas. The vent opening can thus be formed only on the guide device or alternatively also on the guide device and the support element. For example, the guide surface can run in the axial direction in the area of ​​the guide device and in the radial direction in the area of ​​the support element.

[0023] The invention further relates to a driver assistance device, in particular an ABS, TCS, or ESP device, with at least one solenoid valve, in particular according to the above embodiments, wherein the solenoid valve has a magnet armature that is operatively connected to a sealing element of the magnet valve for its displacement, and an armature counterpart that engages at least partially in a receiving opening of the magnet armature. It is provided that the armature counterpart consists of a pole core and an intermediate component supported on the pole core, wherein only the intermediate component is arranged at least partially in the receiving opening, and the intermediate component has at least one vent opening that establishes a fluid connection between the receiving opening and an area surrounding the magnet armature, wherein a spring element is provided in the receiving opening, and the intermediate component has a guide device for the spring element.Furthermore, it is provided that the vent opening is designed as an open-edged recess that opens toward a circumferential surface of the intermediate component, with the guide device having the vent opening at least in some areas. Thus, the driver assistance device can be implemented cost-effectively while still featuring solenoid valves with good adjustability.

[0024] The invention will be explained in more detail below with reference to the exemplary embodiments illustrated in the drawings, without limiting the invention. They show: Fig. 1 a cross-section of a solenoid valve with a magnet armature and an armature counterpart, wherein the armature counterpart consists of a pole core and an intermediate component, the latter being arranged in a receiving opening of the magnet armature, Fig. 2 a detailed sectional view of the magnet armature and the intermediate component, Fig. 3 the intermediate component in a view from the direction of the receiving opening, Fig. 4 the intermediate component in a side view, Fig. 5 the intermediate component in an isometric view, Fig. 6 the intermediate component and a spring element connected to it, and Fig. 7 the magnet armature and the intermediate component arranged in the receiving opening.

[0025] The Fig. 1 shows a cross-section of a solenoid valve 1. The solenoid valve 1 has a magnet armature 2, which is held in a housing 3 of the solenoid valve 1 so as to be displaceable in the axial direction (longitudinal axis 4 of the solenoid valve 1). The magnet armature 2 serves to displace a sealing element 5, which for this purpose is firmly connected to the magnet armature 2, for example by being screwed or pressed into the magnet armature 2. The sealing element 5 interacts with a valve seat 6, which is formed in a valve body 7. The valve body 7 is at least partially enclosed by the housing 3 and thus held in relation to it. In addition to the valve seat 6, the valve body 7 has a riser channel 8, at least one inlet channel 9 and at least one outlet channel 10. The inlet channel 9 runs in the radial direction and opens into the riser channel 8.On the side facing away from the riser channel 8, the inlet channel 9 has an inlet connection 11 which is formed in a lateral surface of the valve body 7 or the solenoid valve 1.

[0026] A fluid can be supplied to the solenoid valve 1 through the inlet connection 11. This fluid first passes through a filter 12, which can optionally be attached to the solenoid valve 1. In the example shown here, four inlet channels 9 and the same number of outlet channels 10 are provided, although only two are shown in each case. Below the junction of the inlet channels 9 in the riser channel 8, the latter is closed by a closing body 13, which is designed as a sphere here. This ensures that fluid supplied through the inlet connections 11 flows through the inlet channels 9 and the riser channel 8 in the direction of the valve seat 6. The outlet channels 10 are in permanent fluid communication with a fluid chamber 14 of the solenoid valve 1. The fluid chamber 14 is formed by the valve body 7, the magnet armature 2 and the housing 3. The valve seat 6 is arranged in the fluid chamber 14. The sealing element 5 penetrates at least partially through the fluid chamber 14.On their side facing away from the fluid chamber 14, the outlet channels 10 each have an outlet connection 15.

[0027] On the side of the magnet armature 2 facing away from the fluid chamber 14 or the valve body 7, an armature counterpart 16 is provided in the housing 3. This is held stationary in the housing 3, for example by a clamping effect. In addition, sealing elements 17 can be provided to create a tight connection between the housing 3 and the armature counterpart 16. The magnet armature 2 and the armature counterpart 16, together with at least one coil (not shown), form a magnetic part of the solenoid valve 1. The magnet armature 2 is arranged in the region of the coil. Alternatively, however, it is also possible to arrange the coil such that both the magnet armature 2 and the armature counterpart, or only the armature counterpart 16, are arranged in the region of the coil.

[0028] The armature counterpart 16 is composed of a pole core 19 and an intermediate component 20. The magnet armature 2 has an end face 21, and the pole core 19 has an end face 22, with which the magnet armature 2 can be supported on the pole core 19. The end faces 21 and 22 thus form contact surfaces between the magnet armature 2 and the pole core 19. The magnet armature 2 has a receiving opening 23, which is formed in the end face 21 of the magnet armature 2 facing the armature counterpart 16 or the pole core 19, or passes through it. In the exemplary embodiment shown here, the receiving opening 23 has a substantially cylindrical or circular-cylindrical shape. However, the receiving opening 23 can also have different dimensions or - if the receiving opening 23 is circular - diameters in the direction of the longitudinal axis 4.The intermediate component 20 and a spring element 24 are arranged at least partially in the receiving opening 23.

[0029] In the embodiment shown here, the spring element 24 is designed as a spiral spring and is supported on a base 25 of the receiving opening 23. The receiving opening 23 is accordingly designed as a blind opening. On the side of the spring element 24 facing away from the armature counterpart 16 or the base 25, the spring element is supported on the intermediate component 20. The spring element 24 bears against a surface 26 of the intermediate component 20, which is designed as a flat annular surface and lies essentially parallel to the base 25. The intermediate component 20 consists of a support element 27 and a guide device 28. The support element 27 faces the pole core 19 and has a flat support surface 29, which interacts with a likewise flat support surface 30 of the pole core 19 to support the intermediate component 20.The intermediate component 20 is therefore merely supported on the pole core 19, meaning there is no fixed or rigid connection between the pole core 19 and the intermediate component 20. In particular, no form-fitting, force-fitting, or material-fitting connection is provided.

[0030] The intermediate component 20 rests solely on the pole core 19 or its end face 22 via the support surfaces 29 and 30. The guide device 28 serves, in particular, to guide the spring element 24. For this purpose, it is essentially mandrel-shaped and engages in an inner region of the spring element 24, which is designed as a spiral spring. Thus, the spring element 24 is securely secured against buckling or displacement in the radial direction. Furthermore, the intermediate component 20 is designed in the sense of a multiple immersion stage (here: double immersion stage) due to the different dimensions of the support element 27 and the guide device 28.

[0031] The support element 27 extends in the radial direction such that it is arranged at a distance from an inner wall 31 of the receiving opening 23 in the radial direction. The guide device 28 has smaller dimensions. Advantageously, both the support element 27 and the guide device 28 are circular on average, i.e., circular-cylindrical. The distance between the end faces 21 and 22 is referred to as the air gap or the working air gap. Compared to a solenoid valve known from the prior art, the solenoid valve 1 with the intermediate component 20 has the advantage that the magnetic force, which can be achieved by means of the coil 18, the magnet armature 2, and the armature counterpart 16, has a flatter and thus more uniform profile over the size of the working air gap.In particular, the magnetic force decreases less sharply with increasing working air gap than is the case for the known solenoid valve without intermediate component 20. The multi-part, particularly two-part, design of the armature counterpart 16, consisting of pole core 19 and intermediate component 20, therefore significantly improves the adjustability of the solenoid valve 1.

[0032] The Fig. Figure 2 shows a detailed sectional view of the magnet armature 2 with the receiving opening 23, in which the intermediate component 20 of the armature counterpart 16 is arranged together with the spring element 24. The intermediate component 20 consists of the support element 27 and the guide device 28 for guiding the spring element 24. The guide device 28 is in the form of a mandrel and is encompassed by the spring element 24. The spring element 24 bears against the surface 26 of the support element 27 for support. On the side of the support element 27 opposite the surface 26, the support surface 29 is provided, which is in contact with the pole core 19 (not shown). It is clear that the support element 27 has smaller dimensions in the radial direction than the receiving opening 23.In this respect, when the intermediate component 20 is displaced in the axial direction, fluid can flow through a vent opening 33 formed by the spacing of the intermediate component 20 and the inner wall 31 of the receiving opening 23. This is indicated, for example, by the arrows 34, which show a flow direction that exists when the intermediate component 20 is moved out of the receiving opening 23. Additionally or alternatively, radial openings 35 can be provided in the magnet armature 2, which establish a flow connection from the receiving opening 23 to a lateral surface of the magnet armature 2. In this way, an additional fluid connection can be realized.

[0033] The Fig. 3 shows the intermediate component 20 in a view from below, i.e. from the direction of the receiving opening 23. The support element 27 with the surface 26 and the guide device 28 can be clearly seen. It is also shown that the intermediate component 20 has at least one further vent opening 36. In the embodiment shown here, two vent openings 36 are provided, which are formed diametrically opposite one another on the intermediate component 20. The vent openings 36 penetrate a circumferential surface 37 of the intermediate component 20 or of the support element 27, at least in some areas. There is therefore a flow connection through this circumferential surface 37. The vent opening 36 is open at the edge and is therefore not a closed channel in the intermediate component 20.In addition to the circumferential surface 37, the vent openings 36 also extend through an end face 38 located on the side of the intermediate component 20 facing the magnet armature 2. A fluid guide surface 39 is provided in each of the vent openings 36. This surface runs from a side 40 of the intermediate component 20, on which the end face 38 lies, to a side 41 of the intermediate component 20 facing away from this end face 38. On side 40, the fluid guide surface 39 runs essentially in the axial direction, i.e., parallel or coaxial with the longitudinal axis 4 of the solenoid valve 1. On side 41, however, it runs in the radial direction, or at least essentially in the radial direction, directed outwards. Between sides 40 and 41, the fluid guide surface 39 has a curved profile, so that optimal guidance of the fluid is achieved with the lowest possible flow losses.

[0034] The Fig. Figure 4 shows the intermediate component 20 in a side view. Here, the curved profile of the fluid guide surface 39 is clearly visible. It is also clear that the guide device 28 has the vent openings 36, at least in some areas.

[0035] The Fig. 5 shows an isometric view of the intermediate component 20. Here, too, the curved course of the fluid guide surface 39 is clearly visible, with which an axial flow is effected in the region of the side 40 and a radial flow is effected at least in some areas on the side 41 through the vent opening 36.

[0036] The Fig. 6 and Fig. 7 show further detailed views of the intermediate component 20. In the Fig. 6, the intermediate component 20 is shown together with the spring element 24, while in the Fig.7 shows the intermediate component 20 in the receiving opening 23 of the magnet armature 2. It is clear that the magnet armature 2 has axial recesses 42. These are fluidically connected to the radial openings 35, with the radial openings 35 opening into the axial recesses 42.

Claims

[1] Solenoid valve (1) with a magnet armature (2) which is operatively connected to a sealing element (5) of the magnet valve (1) for its displacement, and an armature counterpart (16) which engages at least partially in a receiving opening (23) of the magnet armature (2), wherein the armature counterpart (16) consists of a pole core (19) and an intermediate component (20) supported on the pole core (19), wherein only the intermediate component (20) is arranged at least partially in the receiving opening (23) and at least one vent opening (33, 36) is formed in the intermediate component (20) which establishes a fluid connection between the receiving opening (23) and an environment of the magnet armature, wherein a spring element (24) is provided in the receiving opening (23) and the intermediate component (20) has a guide device (28) for the spring element (24), characterized bythat the vent opening (36) is designed as an open-edged recess which opens in the direction of a circumferential surface (37) of the intermediate component (20), wherein the guide device (28) has the vent opening (36) at least in some regions. [2] Solenoid valve according to claim 1, characterized by that the magnet armature (2) is displaceable by means of a coil and the armature counterpart (16) is arranged substantially stationary in the magnet valve (1). [3] Solenoid valve according to one of the preceding claims, characterized by that the intermediate component (20) is provided at a distance in the radial direction from an inner wall (31) of the receiving opening (23), wherein the vent opening (33) is formed. [4] Solenoid valve according to one of the preceding claims, characterized by that the vent opening (36) passes through an end face (38) of the intermediate component (20) facing the magnet armature (2). [5] Solenoid valve according to one of the preceding claims, characterized by that the vent opening (36) has a fluid guide surface (39) which runs at least partially in the axial direction on the side (40) of the intermediate component (20) facing the magnet armature (2) and at least partially in the radial direction on its opposite side (41). [6] Solenoid valve according to one of the preceding claims, characterized by that a plurality of vent openings (36) are provided, which are arranged distributed over the circumference of the intermediate component (20). [7] Driver assistance device, in particular ABS, TCS or ESP device, with at least one solenoid valve (1) according to one or more of the preceding claims, wherein the solenoid valve (1) has a magnet armature (2) which is operatively connected to a sealing element (5) of the magnet valve (1) for its displacement, and an armature counterpart (16) which engages at least partially in a receiving opening (23) of the magnet armature (2), wherein the armature counterpart (16) consists of a pole core (19) and an intermediate component (20) supported on the pole core (19), wherein only the intermediate component (20) is arranged at least partially in the receiving opening (23) and in the intermediate component (20) there is at least one vent opening (33, 36) establishing a fluid connection between the receiving opening (23) and an environment of the magnet armature (2),wherein a spring element (24) is provided in the receiving opening (23) and the intermediate component (20) has a guide device (28) for the spring element (24), , characterized by that the vent opening (36) is designed as an open-edged recess which opens in the direction of a circumferential surface (37) of the intermediate component (20), wherein the guide device (28) has the vent opening (36) at least in some regions.

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