LU102988B1 - Damping valve device for a vibration damper - Google Patents

Abstract

The invention relates to a damping valve device (1) for a hydraulic vibration damper (2) for a vehicle, comprising: 5 a drive area (19) and a valve area (9), a damping valve housing (3) with a pipe part (4) which covers the drive area ( 19) and encloses the valve area (9), the drive area (19) having a coil (8) which is designed such that it generates a magnetic circuit within the damping valve device (1) and is axially movable within the coil (8). attached armature (11) to move the armature (11) in the axial direction, the armature (11) being arranged within a pole tube (7) and the pole tube (7) forming a guide for the armature (11), the valve area ( 9) has a fluid inlet (28) and a fluid outlet (29) for inlet and outlet of a hydraulic fluid into the valve area (9) and a valve block (27) with a plurality of flow passages (20) for conducting the hydraulic fluid, the valve area (9 ) has a control slide (17) which is mounted movably relative to the valve block (27) in such a way that it moves between a closed position, in which the flow passages (20) are closed by the control slide (17), into an open position, in which the flow passages (20) are free, is movable, with at least two flow passages (20a-f) being arranged at different height levels (H1 to H6).

Description

221347 P00LU 07/26/2022 LU102988 1/37

Damping valve device for a vibration damper

The invention relates to a damping valve device for a vibration damper, particularly for motor vehicles.

Vibration dampers, especially shock absorbers, are commonly used in

Used in motor vehicles and are between a wheel suspension, in particular one

Axle, and the body of the vehicle to absorb shocks while driving and reduce vibrations. To increase driving comfort and

For driving safety, the damping characteristics of the vibration damper are usually adjustable. For example, this is done via a solenoid valve, via which the flow of the hydraulic fluid within the vibration damper can be adjusted and thus the

Movement of the piston of the vibration damper is made easier or more difficult.

Solenoid valves are, for example, arranged on the outside of the vibration damper tube and thus represent a separate module from the vibration damper tube, which takes up additional space within the vehicle.

From EP2685145A2 a damping valve device is known which is located on the outside

Vibration damper is attached.

Based on this, it is the object of the present invention to reduce the manufacturing costs, in particular the number and complexity of the components, the assembly time, and that

To reduce the weight of a damping valve device of a vibration damper.

This task is achieved according to the invention by a damping valve device with

Features of the independent device claim 1 solved. Beneficial

Further training results from the dependent requirements.

A damping valve device for a hydraulic vibration damper for a

Vehicle, in particular a motor vehicle, comprises, according to a first aspect

Invention a drive area and a valve area. The

Damping valve device further comprises a damper valve housing, with a

221347 P00LU 07/26/2022 LU102988 2/37

Pipe part that encloses the drive area and the valve area, whereby the

Drive area has a coil which is designed such that it has a

Magnetic circuit generated within the damping valve device and with an axially movable armature mounted within the coil for axial movement of the armature

Direction interacts. The anchor is arranged within a pole tube, whereby the

Pole tube forms a guide for the anchor. In particular, the pole tube forms an axial

Guide to guide the movement of the armature in the axial direction. The valve portion has a fluid inlet and a fluid outlet for inlet and outlet

Hydraulic fluids in the valve area and a valve block with a plurality of

Flow passages for conducting the hydraulic fluid. The valve area has one

Control slide, which is mounted movably relative to the valve block in such a way that it can move between a closed position, in which the flow passages are closed by the control slide, and an open position, in which the

Flow passages are free and can be moved. At least two flow passages are arranged at different height levels.

The arrangement of the flow passages at different height levels causes the flow passages to be opened/closed by the control slide in a predetermined order. This ensures an optimal distribution of the energy

Control slide allows transverse force acting during the switching process.

The valve block has, for example, a first cylindrical region in which the flow passages are formed. A second, substantially cylindrical region preferably adjoins the first region in the direction of the fluid outlet

Area coaxial with the first area and has a larger diameter relative to the first area. The second region has, for example, a peripheral surface pointing radially outwards and one pointing axially in the direction of the first region

shoulder surface. The shoulder surface preferably rests on the pole tube. The first

Area of the valve block preferably has the flow passages and is

In particular arranged coaxially to the control slide. The first area can preferably be completely or partially enclosed by the control slide. The

Flow passages are preferably circular bores in the valve block, in particular the wall of the first region of the valve block. Preferably they are

221347 P00LU 07/26/2022 LU102988 3/37

Flow passages are arranged evenly spaced apart from one another in the circumferential direction of the first region of the valve block. For example, at least two flow passages that are directly adjacent to one another are each on different ones

Height levels arranged. In particular, all flow passages are arranged at different height levels.

Below the height level is preferably the distance from the center of the respective

Flow passage to a specific cross-sectional plane

To understand damping valve device. In particular, this includes the axial distance of the center of the respective flow passage to the shoulder surface of the second

To understand the area of the valve block.

According to a first embodiment, at least two flow passages are arranged at the same height level. This allows the simultaneous opening of the

Flow passages are achieved by means of the control slide and the force distribution of the forces acting on the control slide during the switching process of the damping valve is optimized.

According to a further embodiment, flow passages lying opposite one another are arranged circumferentially on the valve block at the same height level. The valve block preferably has four, six, eight or ten

Flow passages which are arranged circumferentially around the first region of the valve block and in particular adjacent flow passages to one another at an angle of 90°, 60°, 45° or 36° about the central axis of the

Valve blocks are arranged offset. Opposite each other

Flow passages are arranged 180° apart from each other. A simultaneous one

Opening/closing opposite flow passages optimizes the

Distribution of the forces acting on the control slide during the switching process of the damping valve. Alternatively, opposite flow passages are arranged circumferentially on the valve block at different height levels.

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According to a further embodiment, circumferentially opposite flow passages on the valve block have a height difference that is less than the height difference to the directly adjacent ones

flow passages. This causes opposing flow passages to open/close immediately one after the other.

According to a further embodiment, at least two flow passages have different diameters. According to a further embodiment, at least two flow passages have different geometries. All flow passages preferably have different diameters and/or geometries. This enables optimal adjustment of the pressure acting on the control slide

Forces in the switching process of the damping valve.

According to a further embodiment, a plurality of flow channels are formed between the pole tube and the valve block, which extend at least partially in the radial direction. The flow channels are preferably in the second

Area of the valve block and in particular designed to be open in the direction of the pole tube, so that the flow channels are each formed between the inner surface of the pole tube and the radially outward-facing surface of the valve block. The

Flow channels preferably extend from the shoulder surface to the

Circumferential surface and in particular represent recesses, preferably bulges, in the shoulder surface and the circumferential surface. The direction of extension of the

Flow channels preferably have an axial and a radial component.

For example, the flow channels extend continuously at an angle of 10° to 80°, in particular 20° to 60°, preferably 30° to 50° to the axial. The

Flow channels are, for example, designed in the shape of a half-shell in the valve block and extend in particular in a star shape from the first region, in particular the

Flow passages, gone.

According to a further embodiment, at least one flow channel is arranged in alignment with one of the flow passages. Preferably, each flow channel is arranged in alignment with a respective flow passage. This achieves an optimal flow of the damping fluid. Preferably the number corresponds

221347 P00LU 07/26/2022 LU102988 5/37 of the flow passages of the number of flow channels. Preferably they are

Flow channels arranged at the same height with at least one flow passage. It is also conceivable that more flow channels than

Flow passages are provided. According to a further embodiment, at least one flow channel is arranged offset from the flow passages. It is also conceivable that all flow channels are arranged offset from the flow passages.

In the following, the axial direction is the parallel to the axial center line

Damping valve device, in particular the pipe part of the

Damping valve device, running direction to understand. The term radial direction is understood to mean the direction orthogonal to the axial direction.

The hydraulic vibration damper preferably comprises an inner cylinder tube and an outer cylinder tube arranged coaxially thereto, which in particular

Outer wall of the vibration damper forms. Within the inner cylinder tube, a piston is preferably attached to a piston rod in an axially movable manner and divides the inner cylinder tube into two working spaces. In particular, the piston has at least two

Fluid feedthroughs through which one workspace is connected to the other workspace. An annular space is preferably formed between the inner and outer cylinder tubes, with a central tube, which divides the annular space, preferably being mounted within the annular space and coaxially between the inner and outer cylinder tubes. The damping valve device is preferably fluidly connected to at least one of the working spaces of the inner cylinder tube and preferably to the center tube and the outer cylinder tube

Vibration damper attached. The vibration damper is preferably completely or partially filled with a hydraulic fluid.

The tube part is preferably designed such that it can be connected to the outer cylinder tube and in particular has a substantially constant, circular

Cross section. The tubular part preferably forms the outer housing wall

Damping valve device. In particular, the drive area and the valve area are arranged completely within the tube part, so that the tube part is preferably

221347 P00LU 07/26/2022 LU102988 6/37 extends in the axial direction beyond the drive area and/or the valve area. The valve area is preferably in one of the outer cylinder tubes

The area of the pipe part facing the vibration damper is arranged, the

Drive area in the opposite, the outer cylinder tube of the

The area of the pipe part facing away from the vibration damper is arranged. The tube part is preferably made of a magnetic or magnetizable material.

The drive area preferably comprises an electromagnet, wherein the

Electromagnet, for example, has a coil with a plurality of windings which are arranged on a coil support. The coil carrier is preferably made of a plastic and in particular is essentially hollow cylindrical and arranged coaxially to the tubular part.

The coil is preferably firmly, in particular cohesively, positively and/or non-positively connected to the tubular part. For example, a clearance fit is formed between the pole tube and the coil. The coil is preferably designed and arranged such that it generates a magnetic circuit within the damping valve device. Preferably, the coil subjected to an electrical current generates a magnetic flux which flows in a closed path within the

Damping valve device runs. The magnetic circuit includes the elements of the

Damping valve device through which the magnetic generated by the coil

River runs in a closed path.

The armature is arranged within the coil, preferably coaxially therewith. The armature is preferably made of a magnetic or magnetizable material and is in particular part of the magnetic circuit. The anchor preferably has a first cylindrical region, on which a second cylindrical region is located in the axial direction

Area with a smaller diameter relative to the first area connects.

In particular, the pole tube is arranged between the armature and the coil, which is at least partially hollow cylindrical and is coaxial with the coil

Pipe part and the anchor extends. The pole tube is preferably made of a magnetic or magnetizable material and is in particular part of the magnetic circuit.

For example, the anchor is at least partially or completely covered with a sliding film, such as

221347 P00LU 07/26/2022 LU102988 7137, for example, a PTFE film is wrapped around it, which facilitates the axial movement of the armature within the pole tube. The pole tube preferably has a hollow cylindrical tube that rests at least partially on the coil, in particular the coil support

Area with preferably a substantially constant cross section.

In particular, the hollow cylindrical region has a substantially constant inner and/or outer diameter, in particular a constant wall thickness.

The hollow cylindrical area preferably forms the guide, in particular axial

Guide, of the anchor, so that the anchor is mounted movably within the pole tube in the axial direction. The hollow cylindrical region of the pole tube preferably extends in the axial direction, preferably in the direction of the upper part of the housing, over the coil and in particular has a base at its end, which

Pole tube completely closed at the front. A cylindrical armature space is preferably formed within the hollow cylindrical region, in which the armature and

Hydraulic fluid are arranged. Adjoining the hollow cylindrical region of the pole tube in the axial direction towards the valve region is a valve-side region which has at least one or a plurality of expansions of the inner diameter and/or the outer diameter. The valve-side region of the pole tube is preferably funnel-shaped, with the funnel expanding in the direction of the valve. The pole tube, in particular the valve-side region of the pole tube, is preferably firmly connected to the tube part, in particular in a form-fitting, non-positive and/or material-locking manner. The pole tube extends, for example, in the axial direction at least partially or completely along the coil

Valve slide and the valve block.

The pole tube, in particular the valve-side area, preferably encloses the

Valve block and/or the control slide, particularly circumferentially. Preferably there is a with between the valve block and/or the control slide and the pole tube

Hydraulic fluid-filled annular space is formed. The control slide is preferably mounted so that it can move in the axial direction relative to the valve block and the pole tube and is arranged coaxially with the tube part and the pole tube. The control slide is preferably in operative connection with the armature, so that the movement of the armature is at least partially or completely coupled to the control slide. The

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Control slide preferably has an axial end face that extends in the direction of

Armature points and on which the anchor rests, so that a movement of the anchor is transmitted to the control slide.

The valve block is preferably arranged coaxially with the pole tube and in particular has a cavity which is fluidly connected to the fluid inlet/fluid outlet, so that hydraulic fluid flows into the valve block. A fluid space is preferably formed between the valve block and the pole tube, in which the hydraulic fluid can flow. The valve block is, for example, funnel-shaped and has, for example, a cylindrical region facing the drive unit, which is preferably arranged coaxially to the control slide and has a substantially constant cross section. The control slide preferably surrounds the valve block circumferentially and is movable in the axial direction relative to it

Valve block stored. In the area facing away from the drive unit, the

Valve block, for example, has a funnel-shaped, radial expansion. The valve block is in particular stationary relative to the axially movable control slide and, for example, firmly connected to the pole tube. Preferably, the valve block is at least partially or completely circumferentially and in the axial direction

Pole tube element enclosed, with between the drive-side area of

Valve block and the pole tube element of the control slide is arranged.

Within the valve block there are preferably flow passages, in particular

Passage opening formed through which the hydraulic fluid, in particular from the

Fluid inlet can flow to the fluid outlet. The flow passages are preferably in the cylindrical area enclosed by the control slide

Valve block arranged. The control slide is mounted so that it can move axially in such a way that it completely opens the flow passages in an open position of the damping valve device and completely closes the flow passages in a closed position of the damping valve device. The control slide is mounted in such a way that it can preferably be moved into a variety of intermediate positions in which the flow passages are partially closed. The control slide is preferably biased towards the open position by means of a spring. The

Spring is preferably arranged between the control slide and the valve block

221347 P00LU July 26, 2022 LU102988 9/37 and preferably acts on the control slide with an axial pressure in the direction of the

Force acting in the drive area.

The pole tube is preferably formed in one piece. “One-piece” is preferably understood to be formed from one piece, in particular a solid block, whereby “one-piece” means a fixed connection between several parts, for example by means of

Positive locking, frictional locking and/or material locking is included. A pole tube designed in one piece or in one piece considerably simplifies the assembly of the damping valve device. Complex assembly of the pole tube is no longer necessary. In addition, fasteners for assembling a multi-part pole tube are dispensed with, which leads to weight savings. A further weight saving is achieved in that the tubular part is part of the magnetic circuit, since in this way at least part of the coil carrier, in particular the outer jacket, can be dispensed with. For example, the pole tube is produced by a machining process, in particular turning or milling. In particular, the pole tube is through

Casting or cold forming.

The damping valve device has, for example, a sealing element which is in a

Chamber is arranged, the chamber being formed between the pole tube and the tube part and additionally the coil and / or a support ring. The chamber is preferably closed by the pole tube and the tube part, as well as the coil and/or the support element. The chamber is preferably designed to accommodate a

Sealing element, in particular a sealing ring, is formed. Preferably this is

Chamber is designed in the shape of a circular ring and in particular has a rectangular one

Cross section. The chamber is in particular completely closed and of the

Pole tube, the tube part and the coil and / or the support ring limited. A sealing element, which is preferably a sealing ring, is mounted in the chamber.

The sealing element preferably rests at least on the pole tube and the tube part and serves in particular for sealing, so that no hydraulic fluid passes from the valve area into the coil. In particular, the sealing element is also located on a shoulder of the

pole tube.

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One between the pole tube and the tube part and also the coil and/or one

A chamber formed by a support ring to accommodate the sealing element enables the sealing element to be easily installed on the pole tube. In particular one will

Damage to a sealing element designed as a sealing ring is avoided, as this can largely be mounted in an unstressed state.

For example, the sealing element is designed as an O-ring. Preferably that is

Sealing element made of a plastic, in particular an elastomer. The

Sealing element is in particular designed in the shape of a circular ring and preferably has a round, in particular circular, cross section. Preferably it is

Cross-sectional diameter of the sealing ring is larger than the cross-sectional width of the chamber, so that it preferably rests on at least three inner surfaces of the chamber.

In particular, the pole tube has a radial shoulder that adjoins the chamber.

Preferably, the radial shoulder represents a radial expansion of the pole tube relative to a region of the pole tube that is directly adjacent in the direction of the upper housing part.

The pole tube preferably has a plurality of different ones

Outer diameters, the outer diameter of the pole tube reducing in particular from the chamber towards the upper part of the housing. The outside diameter of the pole tube within the chamber is preferably greater than or equal to

Outer diameter of the area of the pole tube extending from the chamber towards the upper part of the housing. This makes it easier to slide the sealing ring onto the pole tube.

This points in the axial direction from the drive area towards the valve area

Pole tube preferably has a first outer diameter, which is arranged within the coil. This is followed, for example, by a second outer diameter which is larger than the first outer diameter, so that a shoulder, in particular an axial end face, is formed which points in the direction of the upper housing part and against which the coil preferably rests at least partially. The second

The outer diameter is preferably spaced from the inner diameter of the tube part in such a way that the chamber is formed between the pole tube and the tube part.

The second outer diameter is preferably followed by a third

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Outer diameter of the pole tube that is larger than the first and second

Outside diameter is and preferably substantially the inside diameter of the

Pipe part corresponds, so that the pole tube with the third outside diameter on the

pipe part rests. An axial end face is preferably formed between the second and the third outer diameter, which faces in the direction of the upper housing part and delimits the chamber.

For example, the coil has an axially extending projection which adjoins the chamber. The coil preferably has a receptacle to which the windings and the coil support are firmly connected. In particular is that

Receptacle made of a plastic, which is preferably applied at least partially or completely around the windings and the coil support by means of injection molding. Preferably the plastic material is on the windings and the

Coil carrier sprayed on. The recording preferably forms the direction of the

The surface of the coil facing the tube part and rests in particular on the tube part.

The receptacle is, for example, formed in one piece or in one piece with the upper housing part. Preferably the recording has a clearance fit or is fixed with the

Pipe part connected, in particular non-positively, cohesively and / or positively.

The coil preferably has one in the axial direction, in particular along the

Inner wall of the tube part, projection which extends between the tube part and the pole part and adjoins the chamber. The projection is preferably made of a plastic. The projection is preferably formed in the receptacle or the bobbin of the coil. The end face of the valve facing in the direction of the valve

The projection preferably forms a boundary of the chamber. Preferably, the pole tube and the tube part have a positive connection, in particular a

Bayonet fitting, connected to each other. The positive connection has, for example, at least one axial recess formed in the pole tube, which opens into the chamber. The positive connection is in particular a bayonet connection. For example, the pole tube has a plurality of

Recesses that are particularly hook-shaped. Each recess includes, for example, an area that extends in particular in the axial direction and an area that adjoins this area and extends in the radial direction. In the

The recess preferably engages a radial constriction of the pipe part. At

221347 P00LU 07/26/2022 LU102988 12/37 the recesses are preferably radial depressions that are formed in the outer surface of the pole tube that lies against the tube part.

The recesses preferably extend into the chamber and in particular form interruptions in the support surface of the sealing element. In this case, the sealing element 13 preferably has depressions and projections, whereby the

Projections engage in the recesses of the pole tube 7 and, for example, form a positive connection.

The damping valve device has, for example, a support ring arranged separately from the coil. Preferably, the support ring rests at least partially on the coil with an outer surface. The support ring is preferably designed in the shape of a circular ring and, for example, has a rectangular cross section. In particular, the support ring 15 lies with its outer surface on the inside of the pipe part and with its

Inner surface to the outer surface of the pole tube. The one pointing in the direction of the valve

The end face of the support ring borders in particular on the chamber. The support ring is preferably firmly connected to the coil, the pole tube and/or the tube part.

The support ring preferably forms a contact surface for the sealing element. The projection of the coil is provided, for example, as an alternative to or together with the support ring.

For example, the pole tube has a hollow cylindrical region which is arranged within the coil and the hollow cylindrical region has a recess running in the circumferential direction. The recess is preferably between the

Coil and the armature are formed in the pole tube and are, for example, circular. The recess preferably extends in the circumferential direction of the

Pole tube completely in a closed ring around the pole tube or points

interruptions. In particular, the recess extends in the radial direction from outside to inside into the pole tube. The depth of the recess is preferably less than the wall thickness of the pole tube, so that the recess does not form an opening. The recess is in particular completely or partially with a

Material, in particular a magnetically insulating material, such as plastic, filled.

For example, the recess is completely or partially filled with ambient air.

The recess preferably has a cross section with a valve-side area which extends in the radial direction from the inside to the outside in the direction of the valve area

221347 P00LU 07/26/2022 LU102988 13/37 expands. The pole tube preferably has a conical one in the area of the recess

Area that is used to introduce the magnetic flux into the armature. In the direction of the upper housing part, the valve-side area of the recess is adjoined by, for example, an area with a rectangular, in particular square,

cross section.

The coil is preferably fixed in the axial direction via the recess. The

The receptacle of the coil preferably has a projection pointing radially inwards, which engages in the recess of the pole tube and in particular has a shape that corresponds to the cross section of the recess, so that a positive fit

Connection is formed between the receptacle and the pole tube.

In particular, the tubular part is designed in one piece or in one piece. The pipe part is preferably formed in one piece, for example cast and in particular machined using machining processes such as turning, lasering or milling.

For example, the pipe part is produced by cold forming.

Preferably, the tube part extends in the axial direction over the coil and the

Valve block out. The pipe part preferably forms together with the

Upper housing part the outer wall of the damping valve device. The damping valve housing preferably consists of the upper housing part and the tube part. The

The tube part is preferably connected to the upper housing part and the outer cylinder tube

Vibration damper directly connected.

For example, the tube part is connected to the pole tube in a form-fitting, non-positive and/or material-locking manner. Preferably, the pole tube, in particular in the valve-side region, has a circumferential recess which interacts with a constriction of the tube part to form a positive connection.

For example, the pole tube is formed in one piece and/or in one piece and surrounds it

anchor and the control slide. According to a further embodiment, the pole tube extends in the axial direction beyond the valve block. The valve block and the

221347 P00LU 07/26/2022 LU102988 14/37

Control slides are preferably completely enclosed circumferentially and in the axial direction by the pole tube.

The damping valve device preferably has a flow plate made of a magnetic or magnetizable material, the flow plate resting on the coil, the pole tube and/or the tube part. The flow plate is preferably on the from

The end face of the coil facing away from the valve area is attached and extends in particular around the armature.

In particular, the magnetic circuit is formed from the coil, the pole tube, the tube part, the armature and the flux plate. The elements of the magnetic circuit are preferably made entirely or partially from a magnetic or magnetizable material. In particular, adjacent elements of the magnetic circuit lie directly against one another in order to ensure that the magnetic flux is as resistance-free as possible.

For example, the flow plate is designed in the shape of an annular disk and has, for example, at least one radial recess. For example, the

Flow plate has a plurality of recesses pointing radially from the outside inwards, which are in particular evenly spaced from one another. Preferably, the recesses extend radially into the flow plate over about a third to half of the radius of the flow plate.

According to a further embodiment, the damping valve housing has a

Upper housing part, which is attached to the front at one end of the tube part, the pole tube extending from the upper housing part to the valve block. By

The upper housing part is preferably a plug contact for a power connection of the coil and in particular electrical lines leading from the plug contact to the coil, such as

Conductor tracks, sheet metal strips or copper strips, arranged. The upper housing part preferably forms a cover of the pipe part.

The pole tube is, for example, connected to the valve block by means of a mechanical

Joint connection connected. Under a mechanical joint connection is

221347 P00LU 07/26/2022 LU102988 15/37 preferably means a connection of two components by means of forming, with at least one of the components being formed mechanically. A connection of the pole tube to the valve block by reshaping the pole tube and/or the valve block enables the pole tube to be easily pre-assembled on the valve block, so that it can be inserted into the tube part together with the valve lock and connected to it.

This significantly reduces assembly time and assembly costs.

The mechanical joining connection includes, for example, a plastic deformation of the pole tube, such as crimping and/or rolling of the pole tube. The

End region of the pole tube is preferably mechanically formed to ensure the mechanical

To form a joint connection between the pole tube and the valve block. In particular, there is a biasing element, for example a, between the pole tube and the valve block

Spring washer or a disc spring arranged. The biasing element is in particular designed in such a way that it applies an axial spring force to the pole tube and preferably braces this against the valve block. For example, the pole tube has a forming edge which is produced by plastic deformation of the pole tube, with the prestressing element resting against it. Preferably, the biasing element rests on the valve block, in particular the comfort valve body.

The invention also includes a vibration damper for a vehicle with a

Damping valve device as described above, wherein the

Vibration damper has an outer cylinder tube and the tube part of the

Damping valve device is connected to the cylinder tube, in particular directly.

Preferably, the cylinder tube is connected to the tube part in a form-fitting, non-positive and/or material-locking manner. In particular, the cylinder tube is connected to the tube part via a fastening means. A comfort valve is preferably arranged in the pipe part, which is in particular hydraulically in series with that described above

Damping valve device is switched.

Description of the drawings

221347 P00LU 07/26/2022 LU102988 16/37

The invention is explained in more detail below using several exemplary embodiments with reference to the accompanying figures.

Fig. 1 shows a schematic representation of a vibration damper with a

Damping valve device in a side view according to an exemplary embodiment.

Fig. 2 shows a schematic representation of a damping valve device in a

Sectional view according to an exemplary embodiment.

Fig. 3 shows three schematic representations of a valve block in a perspective view according to further exemplary embodiments.

Fig. 4 shows two schematic representations of each arrangement

Flow passages in a valve block in a perspective view according to further exemplary embodiments.

Fig. 1 shows a vibration damper 2 for a vehicle chassis, wherein the

Vibration damper 2 includes a damping valve device 1. The

Vibration damper 2 of FIG. 1 is only shown in an external view. The

Vibration damper 2 preferably comprises a cylinder tube which has a hydraulic fluid sealed therein, a piston which is axially movable within the cylinder tube along a cylinder tube axis and which divides the cylinder tube into two

Working spaces divided, a piston rod that is aligned parallel to the cylinder tube axis and connected to the piston. In particular, the piston has at least two fluid passages through which one working space is connected to the other working space. The vibration damper 2 is, for example, a multi-tube vibration damper. In particular, the

Vibration damper 2 has an inner cylinder tube in which the piston is guided.

For example, the outer cylinder tube 21 is attached coaxially around the inner cylinder tube, with one between the inner and outer cylinder tubes 21

Annular space is formed. Between the inner and outer cylinder tubes 21 and coaxially therewith, a center tube is preferably attached, which divides the annular space. To

Damping the piston movement in at least one, preferably both,

221347 P00LU 07/26/2022 LU102988 17/37

The actuation direction(s) is a damping valve device 1 with at least one of the

Connected workspaces. The damping valve device 1 is preferably on the

Central tube and the outer cylinder tube 21 of the vibration damper 2 are attached.

Fig. 2 shows a damping valve device 1 with a preferably cylindrical

Damping valve housing 3, which comprises a substantially tubular tube part 4 and an upper housing part 5 attached to the tube part 4. One end of the tube part 4 is connected to the cylinder tube 21, not shown in FIG

Vibration damper 2 connected. At the other end of the tube part 4, opposite the cylinder tube 21, the upper housing part 5 is attached, so that the upper housing part 5 preferably closes the tube part 4 at the end. The

Upper housing part 5 has, for example, a circular cylindrical cover section 22, which has a larger diameter than the tube part 4 and protrudes radially beyond the tube part 4. The cover section 22 is adjoined by a hollow cylinder section 23, which has a smaller diameter than the tube part 4, in particular than that

Inner diameter of the pipe part 4, and within the pipe part 4 is arranged coaxially therewith. The upper housing part 5, in particular the hollow cylinder section 23, preferably rests on the inner wall of the tube part 4. As an example, the

Cover section has an annular recess on the side pointing in the direction of the tube part 4, in which the end of the tube part 4 is received. The pipe part 4 is connected, for example, to the upper housing part 5 via a positive connection 24. The positive connection 24 is formed, for example, by a radial recess in the upper housing part 5, into which a radial narrowing of the pipe part 4 engages. The positive connection 24 is preferably formed on the end of the tubular part 4 facing the upper housing part 5. The upper housing part 5, in particular the cover section 22, has a connection area 25, which has one or more

Connection contacts for an electrical power supply of the damping valve device 1. Preferably the connection contacts are for an electrical

Power supply connected to a drive unit 19.

The damping valve device 1 has, for example, a drive area 19 and a

Valve area 9 on. The drive area 19 is, for example, in the upper one

Housing upper part 5 facing area of the damping valve device 1 and

221347 P00LU 07/26/2022 LU102988 18/37 preferably arranged essentially above the valve area 9. The

Drive area 19 preferably includes one designed as an electromagnet

Drive. The electromagnet includes a coil 8 with a plurality of windings made of a current-conducting wire. The coil 8 is preferably arranged within the tube part 4 and concentric to it. An example is the coil 8 within the

Hollow cylinder section 23 of the upper housing part 5 is arranged and rests in particular on the inner wall of the upper housing part 5. In particular, the coil 8 is in that

Upper housing part 5 is cast in, the upper housing part 5 being made of, for example

Plastic, in particular a non-magnetic or only very slightly magnetic material, preferably a magnetic insulator or a material with a high magnetic resistance is formed. The coil includes, for example, one

Coil carrier on which the windings of the coil are wound. The coil 8 at least partially or completely encloses an armature space 26, which extends centrally in the axial direction and concentrically to the tubular part 4. An anchor 11 is mounted so that it can move axially within the anchor space 26. The anchor 11 is preferably cylindrical and has a diameter that is slightly smaller than that

Diameter of the anchor space 26, so that the anchor 11 is preferably mounted so that it can slide in the axial direction. By way of example, the anchor 11 has an upper one

Upper housing part 5 facing first cylindrical region, which is adjoined on the valve region side by a second cylindrical region, which is arranged coaxially to the first region and has a smaller diameter. The

Anchor space 11 is preferably delimited by a hollow cylinder 16, which is arranged coaxially to and within the tubular part 4. The hollow cylinder 16 preferably has a base and is designed to be open, in particular in the direction of the cylinder tube 21.

The bottom preferably points in the direction of the upper housing part 5 and lies, for example, at least partially against it. The hollow cylinder 16 is preferably made of a magnetizable or magnetic material.

The coil 8 is preferably designed and arranged in such a way that it is at one

Application of current forms a magnetic field which has magnetic field lines which preferably run essentially in the axial direction in the armature space 26. The

Armature 11 is preferably made of a magnetizable or magnetic material and is formed according to the polarity of the coil 8

221347 P00LU 07/26/2022 LU102988 19/37

Magnetic field movable in the axial direction. In particular, a pole part 12 is arranged within the armature space 26, which is hollow cylindrical and is arranged coaxially to the tube part 4. The armature 11, in particular the second cylindrical region of the armature, extends centrally through the pole part 12 in the axial direction

Armature 11. The pole part 12 is preferably made of a magnetizable or magnetic material. The pole part 12 rests in particular on the inner wall of the hollow cylinder 16 and is, for example, firmly connected to it. Between the

An annular space is preferably formed between the pole part 12 and the armature 11, through which a hydraulic fluid in particular can flow.

Circumferentially around the hollow cylinder 16 and concentric to it is one

Flow plate 10 arranged. The flow plate 10 is preferably designed as a hollow cylinder and rests in particular on the outer wall of the hollow cylinder 16. Of

Furthermore, the flux plate 10 lies at least partially on the pipe part 4 and preferably provides a magnetic flux connection between the hollow cylinder 16 and the

Pipe part 4. The flux plate 10 preferably rests on the coil 8 and in particular represents a magnetic flux connection between the hollow cylinder 16, the pipe part 4 and / or the coil 8. The flux plate 10 has, for example, at least two opposite ones and in the radial direction from the outside inwardly running

Recesses through which the section of the illustration in FIG. 2 runs.

The hollow cylinder 16 is connected in the axial direction and coaxially therewith

Pole tube element 6. The pole tube element 6 and the hollow cylinder 16 together form the pole tube 7, the pole tube 7 being formed in particular in one piece or in one piece. Preferably, the pole tube element 6 is formed in one piece with the hollow cylinder 16 or is firmly connected to it, for example in a form-fitting, non-positive and/or material-locking manner. The hollow cylinder 16 extends at least partially or completely in the axial direction along the coil 8. Preferably, the pole tube element 6, together with the hollow cylinder 16, encloses at least the armature 11, the armature space 26 and that

Pole part 12.

The pole tube 7 has an upper tubular region with, in particular, a constant

Inner diameter, which preferably includes the hollow cylinder 16 and is different from that

221347 P00LU 07/26/2022 LU102988 20/37

Upper housing part extends in the axial direction beyond the anchor 11. The upper tubular region is adjoined in the axial direction by a lower region with an enlarged diameter, the outer surface of the pole tube, in particular of the pole tube element 6, preferably extending up to the tube part 4 and at least partially resting against it. The inner surface of the lower part of the

Pole tube element 6 at least partially encloses a valve area 9, which is explained in more detail in one of the following sections. The pole tube 7 preferably has one

Recess 18, which is formed, for example, in a ring-shaped circumference in the pole tube wall. Preferably, the recess 18 is coaxial with the coil 8 and

Arranged in particular within the coil 8. The recess 18 has, for example, a square cross section.

The pole tube element 6 of the pole tube 7 preferably has a plurality of different inner diameters, each of which forms cylindrical spaces of different diameters. The pole tube 7 also has, in particular, a plurality of different outer diameters. In the axial direction from the drive region 19 in the direction of the valve region 9, the pole tube 7 preferably has a first outer diameter, which forms the hollow cylinder 16 and preferably extends along the coil 8. This is followed by a second one

Outer diameter that is larger than the first outer diameter, so that a

Paragraph, in particular an axial end face, is formed in the direction of

Upper housing part 5 has and on which the coil 8 rests at least partially, for example. The second outside diameter is preferably smaller than that

Inner diameter of the tube part 4 and in particular spaced from it in such a way that a chamber 14 is formed between the pole tube 7 and the tube part 4. For example, a third outer diameter adjoins the second outer diameter

Pole tube 7, which is larger than the first and second outer diameter and preferably essentially corresponds to the inner diameter of the tube part 4, so that the pole tube 7 rests on the tube part 4 with the third outer diameter.

A shoulder, in particular an axial end face, is formed between the second and the third outer diameter and points in the direction of the upper housing part 5. The

Pole tube element 6 is preferably made of a magnetizable or magnetic

material formed.

221347 P00LU 07/26/2022 LU102988 21/37

The chamber 14 is preferably designed to accommodate a sealing element 13, in particular a sealing ring. The chamber 14 is preferably circular and in particular has a rectangular cross section. The chamber 14 is in particular completely closed and delimited by the pole tube 7, the tube part 4 and, for example, the coil 8. The coil 8 preferably has an axial

Direction, in particular along the inner wall of the tube part 4, projection 15, which extends between the tube part 4 and the pole tube 7 and adjoins the chamber 14. The projection 15 is preferably made of a plastic and

In particular positively connected to the pole part 7 and the tube part 4. In the

The end face of the projection 15 facing the valve direction preferably forms one

Delimitation of chamber 14.

A sealing element 13 is mounted in the chamber 14, which is

Sealing element 13 is preferably a sealing ring. The sealing element 13 is, for example, designed in the shape of a circular ring and preferably has a round, in particular circular, cross section. The sealing element 13 preferably rests at least on the pole tube 7 and the tube part 4 and serves to seal the

Valve area 9 to the drive area 19, so that no hydraulic fluid from the

Valve area 9 enters the coil 8. In particular, the sealing element 13 also lies on a shoulder, preferably between the second and third

Outer diameter of the pole tube 7 formed axial end face.

Alternatively, it is possible for the projection 15 to be designed as a support ring 15. The

Support ring 15 is, for example, designed separately from the coil 8 and lies at least partially against it with an outer surface. The support ring 15 is preferably designed in the shape of a circular ring and, for example, has a rectangular cross section.

In particular, the support ring rests with its outer surface on the inside of the tube part 4 and with its inner surface on the outer surface of the pole tube 7. The end face of the support ring 15 pointing in the valve direction borders the chamber 14. The support ring 15 is preferably firmly connected to the coil 8, the pole tube 7 and/or the tube part 4.

The support ring 15 preferably forms a contact surface for the sealing element 13.

221347 P00LU 07/26/2022 LU102988 22/37

The pole tube element 6 is preferably connected to the pole tube via a positive connection

Pipe part 4 connected. The positive connection preferably comprises a radial one

Recess, in particular depressions, in the pole tube element 6, into which a radial

Constriction of the pipe part 4 engages and interacts with it in such a way that

Pole tube element © is fixed in the axial and radial directions. At the

Positive connection is in particular a bayonet connection.

For example, the pole tube 7, in particular the pole tube element 6, has a plurality of recesses 33, which are in particular hook-shaped. Every

Recess 33 includes, for example, an area that extends in particular in the axial direction and an area that adjoins this area and extends in the circumferential direction. At least one or more radial constrictions 32 of the tubular part 4 preferably engage in the recess 33. The recesses 33 are preferably radial depressions which are formed in the outer surface of the pole tube 7 which rests on the tube part 4. The recesses 33 preferably extend into the chamber 14 and in particular form interruptions in the support surface of the sealing element 13. In Fig. 2, only the areas of the recess 33 running in the circumferential direction are partially shown.

The valve area 9 is preferably integrated into a hydraulic circuit, not shown, and is fluidly connected to the vibration damper 2, in particular the working spaces of the vibration damper 2. The valve area 9 has an inlet 28 and an outlet 29, the functionality of which depends on the flow direction of the

Damping fluid can be reversed.

The valve area 9 of the damping valve device 1 preferably comprises one

Control slide 17, which is at least partially or completely circumferential

Pole tube element 6 is enclosed and in particular is arranged coaxially to this and the tube part 4. The control slide 17 preferably has an axial end face which points in the direction of the armature 11 and on which the armature 11, in particular the lower, second region of the armature 11, rests, so that a movement of the armature 11 is transmitted to the control slide 17.

221347 P00LU 07/26/2022 LU102988 23/37

Furthermore, the valve area 9 comprises a valve block 27. The control slide 17 preferably surrounds the valve block 27 circumferentially and is mounted so that it can move in the axial direction relative to the valve block 27. The valve block 27 is in particular funnel-shaped and has, for example, an upper cylindrical region facing the drive unit 19, which is arranged coaxially to the control slide 17. At the lower region facing away from the drive unit 19, the valve block 27 has, for example, a radial expansion. The valve block 27 is in particular stationary relative to the axially movable control slide 17.

Preferably, the valve block 27 is at least partially or completely enclosed circumferentially and in the axial direction by the pole tube element 6, with the control slide 17 being arranged between the upper region of the valve block 27 and the pole tube element 6. The lower region of the valve block 27 is arranged in the radial direction directly adjacent to the pole tube element 6 and preferably lies at least partially against it. Within the valve block 27 are only partially shown

Passage opening and/or flow passages 20 are formed through which the

Damping fluid can flow from the inlet 28 in the direction of the outlet 29. The

Control slide 17 is mounted so that it can move axially in such a way that it is in an open position

Position of the damping valve device 1 completely exposes the flow passages 20 and in a closed position of the damping valve device 1

Flow passages 20 completely closed. The control slide 17 can preferably assume a variety of intermediate positions in which the

Flow passages 20 are partially closed. The control slide 17 is preferably opened in the direction of a spring, not shown

Valve position biased, so that the damping valve is open when the coil 8 is de-energized. The spring is preferably between the control slide 17 and the

Valve block 27 is arranged and preferably acts on the control slide with a force acting axially in the direction of the drive region 19. Between the valve block 27 and the pole tube element 6 there is preferably an annular gap 30 for conducting the

Damping fluid formed. The annular gap 30 preferably extends completely around the upper region of the valve block 27 that can be enclosed by the control slide 17 and in particular at least partially or completely around the lower region of the valve block 27

Valve block 27. The control slide 17 is preferably axially movable within the annular gap 30.

221347 P00LU 07/26/2022 LU102988 24/37

The valve area 9 preferably includes a comfort valve and a solenoid valve, which are hydraulically connected in series with one another. By way of example, the valve block 27 includes two valve bodies. The valve body pointing in the direction of the drive area is, for example, the solenoid valve body shown in FIG. 3 and preferably the flow passages 20 and one described above

Has a plurality of flow channels 31 and cooperates with the control slide 17, which can be moved by means of the coil 8. In the direction of the cylinder tube 21 of the

Vibration damper 2 preferably connects to the solenoid valve body

Fig. 3 comfort valve body, not shown. For example, it is optional

Valve block 27 designed as a solenoid valve body and comfort valve body is formed in one piece or in one piece.

In particular, the fluid drain 29 is formed between the valve block 27 and the pole tube 7. There are preferably one between the pole tube 7 and the valve block 27

A plurality of flow channels 31 are formed. The flow channels 31 are at least partially formed in the valve block 27. The flow channels 31 preferably extend along the pole tube 7, the pole tube 7 preferably having no passage openings, in particular bores, for guiding the damping fluid through the pole tube wall.

The pole tube 7, for example, extends at least partially in the axial direction along the comfort valve body. The end region of the pole tube 7 is preferably mechanically formed in order to form a connection between the pole tube 7 and the valve block 27. The pole tube 7 and the valve block 27 are connected to one another in particular by means of a mechanical joining connection. The joining connection is, for example, a crimping or a rolling. Preferably the in

The end region of the pole tube 7 pointing in the direction of the comfort valve is deformed radially inwards, so that in particular there is a radially inward-pointing deforming edge of the

Pole tube 7 forms.

221347 P00LU 07/26/2022 LU102988 25/37

3 shows a detailed view of the valve block 27 in three exemplary embodiments, the valve block 27 corresponding to that of FIG. 2 except for the differences described below.

The valve block 27, in particular the solenoid valve body, has a first cylindrical region 40 in which the flow passages 20 are formed.

The first region 40 is preferably adjoined in the direction of the fluid outlet 29 by a second essentially cylindrical region 41 with a larger diameter relative to the first region 40. The flow channels 31 are formed in the second area. The flow channels 31 are preferably designed to be open in the direction of the pole tube 7, not shown in FIG. The second

Region 41 has, for example, a circumferential surface pointing radially outwards and a shoulder surface pointing axially in the direction of the first region 40. The shoulder surface preferably rests on the pole tube 7. The flow channels 31 preferably extend from the shoulder surface to the circumferential surface and in particular

Recesses, preferably bulges, in the shoulder surface and the

Circumferential surface. By way of example, the direction of extension of the flow channels 31 has an axial and a radial component. For example, they extend

Flow channels 31 continuously at an angle of 10° to 80°, in particular 20° to 60°, preferably 30° to 50° to the axial. The flow channels 31 are, for example, designed in the form of a half-shell in the valve block 27 and extend in particular in a star shape away from the first region 40, in particular the flow passages 20. By way of example, the flow channels 31 each extend from a radially inner, completely annular region of the shoulder surface outwards to the

Perimeter area. The flow channels 31 have, for example, a round, semicircular, circular, oval, rectangular or square cross section. Preferably, all or a plurality of flow channels 31 are geometrically identical and in particular evenly spaced from one another in the circumferential direction.

221347 P00LU 07/26/2022 LU102988 26/37

The first region 40 of the valve block 27 has the flow passages 20 and is preferably arranged coaxially to the control slide 17, not shown in FIG. 3.

The first area 40 can preferably be completely or partially enclosed by the control slide 17. The flow passages 20 are preferably circular

Bores in the valve block 27, in particular the wall of the first region 40 of the

Valve block 27. For example, the flow passages 20 are arranged evenly spaced apart from one another. The valve block 27 preferably has six

Flow passages 20 which extend circumferentially around the first area 40 of the

Valve blocks 27 are arranged and in particular adjacent ones

Flow passages 20 are arranged offset from each other by 60 °. The number of

Flow passages 20 is preferably an even number, in particular four, six, eight or ten.

The left-hand exemplary embodiment in FIG. 3 shows a valve block with six

Flow passages 20, wherein at least one flow passage 20 is arranged offset from the radial extent of the adjacent flow channel 31. By way of example, three flow passages 20 are offset from the adjacent one

Flow channel 31 is arranged, with three flow passages 20 each being arranged in alignment with a flow channel 31. The number of flow channels 31 is, for example, larger than the number of flow passages 20. Eight are exemplary

Flow channels 31 are provided.

In the middle exemplary embodiment of FIG. 3, all are exemplary

Flow passages 20 are arranged in alignment with a respective flow channel 31.

The number of flow channels 31 corresponds, for example, to the number of

Flow passages 20.

In the right-hand exemplary embodiment of FIG. 3, all are exemplary

Flow passages 20 offset from the radial extent of the adjacent one

Flow channel 31 arranged.

4 shows two examples of an arrangement of the flow passages 20 in the

Valve block 27, in particular the first area 40 of the valve block 27, in a 2D

221347 P00LU 07/26/2022 LU102988 27137

View shown. For example, the flow passages have a circular shape

Cross section, with all flow passages 20 having the same diameter. It is also conceivable that at least two, several or all

Flow passages 20 have different diameters and/or geometries.

In the left-hand exemplary embodiment of FIG. 4, the flow passages 20 are arranged at different height levels. For example, in Fig. 4 there are 3 each

Flow passages 20 at a first height level H1 and three each

Flow passages 20 arranged at a second height level H2.

For example, flow passages 20 directly adjacent to one another are arranged at different height levels, preferably every second

Flow passage 20 is arranged at the same height level. Under the

Height level is preferably the distance from the center of the respective

Flow passage 20 to be understood as a cross-sectional plane. In particular, this is to be understood as the axial distance of the center of the respective flow passage 20 to the shoulder surface of the valve block 27.

In the right-hand exemplary embodiment of FIG. 4, all flow passages 20a-f are arranged at different height levels H1 to H6. The one on the right

Height levels H1 to H6 shown in the exemplary embodiment are in ascending order

Order H1, H4, H2, H5, H3, H6, where H1 is the lowest and H6 is the highest

altitude level is. Preferably, the flow passages 20a and 20d, as well as 20b and 20e, and 20c and 20f are arranged opposite one another, offset by 180°.

MWPreferably, circumferentially opposite flow passages 20a-f on the valve block 27 have a height level difference that is less than the height level difference to the directly adjacent ones

Flow passages 20a-f.

Optionally, there are circumferentially opposite ones on the valve block 27

Flow passages 20a-f are arranged at the same height level H1 to H6, so that the height levels H1 are equal to H4, H2 is equal to H5 and H3 is equal to H6.

221347 P00LU 07/26/2022 LU102988 28/37

The damping valve device 1 is used for the particularly continuous adjustment of the

Damping of the vibration damper 2. When the vibration damper 2 is in operation, the coil 8 is supplied with electrical current to set the desired damping. This creates a magnetic field whose magnetic field lines are in the

Coil interior and in particular in the armature space 26 run essentially in the axial direction. The magnetic flux of the magnetic field runs in a magnetic circuit which is formed within the damping valve device 1. The magnetic circuit includes

Components made of materials with low magnetic resistance, preferably made of magnetic or magnetizable material. The magnetic circuit to

Conducting the magnetic field, in particular the magnetic flux, is preferably formed from the flux plate 10, the hollow cylinder 16, the pole tube element 6, the armature 11, the tube part 4 and / or the pole part 12. Depending on the polarity of the magnetic field, the armature 11 is axial Direction moved. The movement of the armature 11 is transmitted to the control slide 17 coupled to the armature 11, so that this

Flow passages 20 of the valve block 27 closes or at least partially opens. 2 shows an example of an open position of the damping valve device 1.

221347P00LU 07/26/2022 LU102988 29/37

List of reference symbols 1 Damping valve device 2 Vibration damper 3 Damping valve housing 4 Pipe part 5 Upper housing part 6 Pole tube element 7 Pole tube 8 Coil 9 Valve area 10 Flow plate 11 Armature 12 Pole part 13 Sealing element 14 Chamber 15 Projection / support ring 16 Hollow cylinder 17 Control slide 18 Recess 19 Drive unit 20a-f Flow passages 21 Cylinder tube 22 cover section 23 Hollow cylinder section / receptacle 24 Positive connection 25 Connection area 26 Anchor space 27 Valve block 28 Inlet / fluid inlet 29 Outlet / fluid outlet 30 Annular gap 31 Flow channels 32 Constriction 33 Recess in the pole tube first area 41 second area

H1: first altitude level

H2: second height level 40 H3: third height level

H4: fourth height level

H5: fifth altitude level

H6: sixth height level

Claims (12)

221347 P00LU July 26, 2022 LU102988 30/37 patent claims 1. Damping valve device (1) for a hydraulic vibration damper (2) for a vehicle, comprising: a drive area (19) and a valve area (9), a damping valve housing (3) with a pipe part (4) which covers the drive area (19) and encloses the valve area (9), the drive area (19) having a coil (8) which is designed in such a way that it generates a magnetic circuit within the damping valve device (1) and with an axially movable armature (8) mounted within the coil (8). 11) cooperates to move the armature (11) in the axial direction, the armature (11) being arranged within a pole tube (7) and the pole tube (7) forming a guide of the armature (11), the valve area (9) being a Fluid inlet (28) and a fluid outlet (29) for inlet and outlet of a hydraulic fluid into the valve area (9) and a valve block (27) with a plurality of flow passages (20) for directing the hydraulic fluid, the valve area (9) having a control slide (17), which is mounted movably relative to the valve block (27) in such a way that it can move between a closed position in which the flow passages (20) are closed by the control slide (17) and an open position in which the flow passages ( 20) are free, is movable, characterized in that at least two flow passages (20a-f) are arranged at different height levels (H1 to H6). 2. Damping valve device (1) according to claim 1, wherein at least two flow passages (20a-f) are arranged at the same height level (H1 to H6). 3. Damping valve device (1) according to claim 1 or 2, wherein circumferentially opposite flow passages (20) on the valve block (27) are arranged at the same height level. 221347 P00LU 07/26/2022 LU102988 31/37 4. Damping valve device (1) according to one of the preceding claims, wherein circumferentially on the valve block (27) opposite flow passages (20a, 20d; 20b, 20e; 20c, 20f) have a height level difference that is less than the height level difference to the respective direct adjacent flow passages (20a-f). 5. Damping valve device (1) according to one of the preceding claims, wherein at least two flow passages (20a-f) have different diameters. 6. Damping valve device (1) according to one of the preceding claims, wherein at least two flow passages (20a-f) have different geometries. 7. Damping valve device (1) according to one of the preceding claims, wherein a plurality of flow channels (31) are formed between the pole tube (7) and the valve block (27), which extend at least partially in the radial direction. 8. Damping valve device (1) according to claim 7, wherein at least one flow channel (31) is arranged in alignment with one of the flow passages (20). 9. Damping valve device (1) according to claim 8, wherein at least one flow channel (31) is arranged offset from the flow passages (20). 10. Damping valve device (1) according to one of the preceding claims, wherein the pole tube (7) extends in the axial direction beyond the valve block (27). 11. Damping valve device (1) according to one of the preceding claims, wherein the damping valve housing (3) has an upper housing part (5) which is attached to 221347 P00LU 07/26/2022 LU102988 32/37 one end of the tube part (4) is attached to the front and the pole tube (7) extends from the upper housing part (5) to the valve block (27). 12. Vibration damper (2) for a vehicle comprising a damping valve device (1) according to one of the preceding claims, wherein the vibration damper has an outer cylinder tube (21) and wherein the tube part (4) of the damping valve device (1) is connected to the cylinder tube (21). is.