Vibration damper valve, vibration damper having vibration damper valve, and motor vehicle having vibration damper

Abstract

The invention relates to a damper valve for a damper, comprising at least one valve region through which a damper fluid can flow and at least one drive region having at least one coil, a ferromagnetic armature and a pole tube, which are arranged coaxially in the installed state, the valve region has at least an inlet, an outlet, a valve body with a plurality of flow channels, and a valve slide which interacts with the armature and can be moved relative to the valve body such that the flow channels can be at least partially closed, a valve slide is arranged between the valve body and the valve body, and a spring element is arranged between the valve slide and the valve body, which spring element preloads the valve slide relative to the valve body, having at least one adjusting element, which is designed to adjust the distance between the valve slide and the valve body in order to vary the preload of the spring element. The invention also relates to a vibration damper for a motor vehicle and to a motor vehicle.

Description

Technical Field

[0001] This invention relates to a damper valve for a shock absorber. The damper valve according to the preamble of claim 1 is known, for example, by DE102022207698A1 or DE102022207702A1 traced back to the applicant. The invention also relates to a shock absorber having at least one such damper valve and a motor vehicle having at least one such shock absorber. Background Technology

[0002] Shock absorbers are commonly used in the automotive and industrial sectors to ensure safe and comfortable driving performance under varying conditions caused by road surface irregularities (such as unevenness, potholes, or other anomalies). Furthermore, shock absorbers are used to stabilize vehicles under more extreme driving conditions, such as off-road driving.

[0003] To improve ride comfort and safety, the damping characteristics of shock absorbers are typically adjustable. This can be achieved, for example, via a solenoid valve, which regulates the flow of fluid within the shock absorber.

[0004] Various influencing factors (such as manufacturing tolerances of valve components and damper components) can adversely affect the electromagnetic switching function of an adjustable damper valve. To compensate for these influencing factors, damper valves are typically adjustable. For example, a damper valve with an adjustable solenoid is known from DE102015006063A1. Summary of the Invention

[0005] The objective of this invention is to provide a damper valve for a shock absorber, which can be adjusted to improve the electromagnetic switching function of the damper valve. Furthermore, the objective of this invention is to provide a shock absorber having at least one such damper valve and a motor vehicle having at least one such shock absorber.

[0006] According to the present invention, this task, with respect to the shock absorber valve, is solved by the technical solution of claim 1. With respect to the shock absorber and the motor vehicle, the aforementioned task is solved by the technical solutions of claims 10 and 11.

[0007] Specifically, this task is achieved through a damper valve for a vibration damper, the damper valve having at least one valve region and at least one drive region, the valve region being through which damper fluid flows, and the drive region having at least one coil, a ferromagnetic armature, and a pole tube. The armature and pole tube are arranged coaxially in the installed state, and the armature is arranged in the pole tube in a manner that allows it to move in the axial direction. The valve region has at least an inlet, an outlet, a valve body having multiple flow channels, and a valve slide that cooperates with the armature and is movable relative to the valve body, such that the flow channels can be at least partially closed. A spring element is arranged between the valve slide and the valve body, the spring element preloading the valve slide relative to the valve body. The damper valve has at least one adjusting element configured to adjust the distance between the valve slide and the valve body in order to change the preload of the spring element.

[0008] This invention has various advantages.

[0009] Therefore, the damper valve according to the invention is adjustable to achieve optimized electromagnetic switching function of the damper valve during use. By adjusting the damper valve, various factors affecting the switching function of the damper valve, such as manufacturing tolerances of valve components and / or effects from damper valve assembly (e.g., inaccurate positioning of valve components), can be easily compensated for. By compensating for these factors, the switching function of the damper valve during use can be improved.

[0010] To implement the adjustment process, the damper valve according to the invention has at least one adjusting element, which is advantageously configured to adapt the spring force of the spring element to the magnetic force of the drive region, thereby optimizing the electromagnetic switching function of the damper valve. This adaptation is achieved by changing or adjusting the preload of the spring element.

[0011] In the installed state, the spring element preloads the valve slide relative to the valve body, such that when the armature in the drive area is driven by the magnetic force of the coil during use, the armature moves against the spring force of the spring element to at least partially close the flow channel. In the demagnetized state, the spring element presses the armature and valve slide away from the flow channel, thereby opening the flow channel for flow. Therefore, the spring force is thus matched with the magnetic force during adjustment, enabling optimized closure and opening of the flow channel during use and achieving optimal electromagnetic switching function of the damper valve. This matching of spring force and magnetic force compensates for manufacturing tolerances or positional inaccuracies in the valve components, allowing the armature to apply a constant force to the valve slide under specific driving conditions and thus enabling the damping force of the damper required by the driving conditions to be adjusted faithfully to the current.

[0012] The spring preload is changed by altering the distance between the valve slide and the valve body. This distance can be adjusted by means of an adjusting element, either by changing the position of the valve slide relative to the valve body or by changing the position of the valve body relative to the valve slide. Therefore, during the adjustment process, the valve slide and / or the valve body can advantageously move in the axial direction.

[0013] In the context of this application, "axial direction" should be understood as a direction extending parallel to the axial centerline of the damper valve (especially the pole of the damper valve); "radial direction" should be understood as a direction extending perpendicular to the axial direction.

[0014] A change in the distance between the valve slide and the valve body advantageously causes the spring preload to decrease or increase. If the distance between the valve body and the valve slide decreases, the spring preload increases. If the distance between the valve body and the valve slide increases, the spring preload decreases. By increasing or decreasing the spring preload, the spring force of the spring element can be matched with the magnetic force in the drive area.

[0015] The adjustment is preferably performed before using the damper valve, that is, before installing the damper with the damper valve in the vehicle. The damper valve can be adjusted before or after assembly. The adjustment, or change, of the distance between the valve body and the valve slide can be suitably performed in steps, with the adjustment result measured after each step. After the adjustment process, the adjusting element can be fixed to maintain the adjustment result.

[0016] Furthermore, it is possible to adjust the damper valve while it is already installed with the damper. Therefore, it is possible to compensate not only for the influence of the valve components, but also for the influence of the damper components and the influence from the damper assembly. This is advantageous because it allows for adjustability not only of the damper valve, but also of the damping force of the assembled damper.

[0017] The adjustment, or change, of the distance between the valve body and the valve slide can be made at at least one adjustment point, and preferably at multiple adjustment points, during damping force measurement. The adjustment points can be defined by various electromagnetic parameters, such as energy consumption, switching time, or switching speed. The adjustment point is typically defined by the damping force at a specific damper speed. By adjusting the process or by matching the spring force with the magnetic force, the deviation between the damping force measured at the adjustment point and the required damping force can be advantageously compensated. Therefore, the quality of adjustment can be evaluated during damping force measurement.

[0018] Regarding the function of the damper valve, please refer to the documents DE102022207698A1 and DE102022207702A1 mentioned at the beginning of this application.

[0019] Advantageous embodiments of the invention are given in the dependent claims.

[0020] Preferably, the adjusting element is arranged on the electrode and configured to move the electrode axially, thereby changing the position of the valve slide relative to the valve body. If the electrode moves axially, the armature arranged in the electrode moves with it. The movement of the armature, which is operatively connected to the valve slide, is transmitted to the valve slide, and the position of the valve slide relative to the valve body changes. This change in the position of the valve slide advantageously adjusts the distance between the valve body and the valve slide. Since the spring element is arranged between the valve body and the valve slide in the installed state, this change in distance achieves a change in spring preload. When the electrode moves towards the valve body, the distance between the valve body and the valve slide decreases, thereby increasing the spring preload. When the electrode moves away from the valve body, the distance between the valve body and the valve slide increases, thereby decreasing the spring preload. Advantageously, the spring preload can be changed steplessly by moving the electrode axially. The spring preload can be decreased or increased steplessly.

[0021] The electrode can have a drive component that, in the installed state, at least partially protrudes from the housing of the damper valve. Therefore, the drive component is advantageously accessible from the outside. The drive component can be arranged at an end of the electrode that faces away from the valve region of the damper valve. Alternatively, the drive component can be part of the electrode, protruding from the housing of the damper valve at the end of the electrode facing away from the valve region. The drive component can constitute an adjusting element arranged on the electrode. Furthermore, the drive component can be coupled to an adjusting tool to adjust the distance between the valve body and the valve slide. Because the drive component is accessible from the outside, it is advantageous to be able to adjust the damper valve in the installed state with the damper and / or to be able to adjust it during damping force measurement. In this way, the influence of the damper valve's switching function from the damper can be taken into account during adjustment.

[0022] In another preferred embodiment, the electrode has a connecting section for connecting the electrode to an inner housing surrounding the valve region of the damper valve, wherein the connecting section has, in particular, external threads. Particularly preferably, when the connecting section has external threads and the inner housing has corresponding internal threads, the electrode can be threadedly connected to the inner housing. Therefore, the electrode can be moved axially during adjustment by rotation or screwing to adjust the distance between the valve body and the valve slide. By screwing the electrode into the inner housing, the spring preload can be advantageously changed steplessly. The connecting section can constitute an adjusting element arranged on the electrode. Furthermore, a reliable connection between the electrode and the inner housing of the damper valve can be achieved through this connecting section.

[0023] Alternatively, the electrode can be envisioned as an adjusting element of the damper valve. In other words, the electrode itself can be an adjusting element of the damper valve. The electrode can be used to adjust the distance between the valve slide and the valve body.

[0024] Alternatively or additionally, the adjusting element can form the head of the valve body and be axially movable relative to the base of the valve body, thereby changing the position of the head relative to the valve slide. If the head moves axially, the distance between the valve body and the valve slide is adjusted, thus changing the spring preload. When the head moves towards the valve slide, the distance between the head and the valve slide decreases, thereby increasing the spring preload. When the head moves away from the valve slide, the distance between the head and the valve slide increases, thereby decreasing the spring preload. Advantageously, the spring preload can be steplessly changed by moving the head axially. The spring preload can be steplessly decreased or increased.

[0025] The head can be removed from the valve area during the adjustment process. This allows for the replacement of the spring element. If the desired adjustment result cannot be achieved using a certain spring element, that spring element can be removed and replaced with another spring element, such as a spring element with a different spring stiffness.

[0026] Preferably, the adjusting element is substantially cylindrical and has a receiving area for the spring element and a coupling area for coupling with the adjusting tool, wherein the receiving area and the coupling area are arranged, in particular, on opposite sides of the cylindrical adjusting element. During the adjusting process, the cylindrical adjusting element or cylindrical head is preferably arranged such that the base of the valve body surrounds the outer periphery of the cylindrical head. The side of the cylindrical head facing the valve slide preferably constitutes the receiving area for the spring element. The side of the cylindrical head facing away from the valve slide preferably constitutes the coupling area for the adjusting tool. Therefore, the coupling area can be easily accessed via the valve area. Thus, the head can be easily displaced relative to the base to adjust the distance between the head and the valve slide.

[0027] Furthermore, the adjusting element, especially a cylindrical adjusting element, can have a radially outwardly pointing connecting surface for connecting the adjusting element to the base of the valve body. The connecting surface of the adjusting element or head is preferably surrounded by the base of the valve body during the adjustment process. This connecting surface allows movement of the adjusting element or head relative to the base of the valve body during the adjustment process and allows the position of the adjusting element or head to be fixed after the adjustment process. In this way, on the one hand, it is possible to easily adjust the distance between the head and the base, and on the other hand, it is possible to determine the adjustment result after the adjustment process.

[0028] Preferably, the adjusting element, and especially its connecting surface, can be connected to the base of the valve body by welding, bonding, crimping, or threading. The position of the head relative to the base can be fixed after the adjustment process. For example, the connecting surface of the head can be connected to the base of the valve body by welding, bonding, or crimping. Furthermore, it is conceivable that the connecting surface of the adjusting element or head has external threads and the base of the valve body has corresponding internal threads.

[0029] In another embodiment, the adjusting element may include the aforementioned flow channels, wherein these flow channels are distributed on the outer periphery of the adjusting element. These flow channels are preferably configured as circular orifices in the head of the adjusting element or valve body. These flow channels are evenly spaced apart from each other in the circumferential direction of the adjusting element. If the head of the valve body moves relative to the base during the adjusting process, the position of the flow channels changes in the axial direction.

[0030] According to independent claim 10, the present invention relates to a shock absorber for a motor vehicle, the shock absorber having at least one shock absorber valve. Reference is made to this invention in conjunction with the advantages described above for the shock absorber valve. The shock absorber preferably comprises an outer cylinder (particularly the outer wall constituting the shock absorber) and an inner cylinder arranged coaxially with the outer cylinder. Inside the inner cylinder, a piston is preferably axially movably mounted on a piston rod and divides the inner cylinder into two working chambers. In particular, the piston has at least two fluid passages, through which one working chamber communicates with the other working chamber. An annular cavity is preferably constructed between the inner and outer cylinders. The shock absorber valve is preferably in fluid communication with at least one working chamber of the inner cylinder and is mounted on the outer cylinder of the shock absorber. During use, the shock absorber is preferably completely or partially filled with a shock absorber medium (particularly hydraulic fluid).

[0031] According to independent claim 11, the present invention relates to a motor vehicle having at least one shock absorber. Reference is made to this invention in conjunction with the advantages described above regarding the shock absorber valve. Attached Figure Description

[0032] The invention will now be described in more detail with reference to the accompanying drawings. The embodiments shown constitute examples of how to design a damper valve according to the invention.

[0033] In these attached figures:

[0034] Figure 1 An external view of a vibration damper with a damper valve according to an embodiment of the present invention is shown;

[0035] Figure 2 An axial sectional view of a damper valve according to the prior art is shown;

[0036] Figure 3 An axial sectional view of a damper valve having an adjusting element according to an embodiment of the present invention is shown;

[0037] Figure 4 Showing according to Figure 3 A cross-sectional view of the adjusting element;

[0038] Figure 5 A partially enlarged view of a damper valve with an adjusting element according to another embodiment of the present invention is shown;

[0039] Figure 6 A partially enlarged view of a damper valve with an adjusting element according to another embodiment of the present invention is shown;

[0040] Figure 7 A partially enlarged view of a damper valve with an adjusting element according to another embodiment of the present invention is shown;

[0041] Figure 8 A partially enlarged view of a damper valve with an adjusting element according to another embodiment of the present invention is shown; and

[0042] Figure 9 A partially enlarged view of a damper valve with an adjusting element according to another embodiment of the present invention is shown. Detailed Implementation

[0043] exist Figure 2 It can be seen from the damper valve 10 according to DE102022207698A1 or DE102022207702A1.

[0044] Figure 3 A damper valve 10 for a damper 100 according to an embodiment of the present invention is shown. The damper valve 10 is used to adjust, in particular to steplessly adjust, the damping of the damper 100. Figure 1 An example of a vibration damper 100 is shown, on which a vibration damper valve 10 is used.

[0045] like Figure 3 As shown, the damper valve 10 has a valve region 30 through which damper fluid, particularly hydraulic oil, can flow. The flow of damper fluid through the valve region 30 can be adjusted to adapt the damping force to the current driving conditions.

[0046] Furthermore, the damper valve 10 is provided with at least one drive region 20 for operating the damper valve 10. The drive region 20 includes an electromagnet that controls the flow rate of damper fluid through the valve region 30 during use.

[0047] The drive region 20 or electromagnet includes at least one coil 21 configured to generate a magnetic circuit within the damper valve 10. When a current is applied to the coil 21, it generates a magnetic flux that extends along a closed path within the damper valve 10. The magnetic circuit includes elements of the damper valve 10 through which the magnetic flux generated by the coil 21 extends along the closed path.

[0048] The coil 21 has multiple turns of windings made of conductive metal wire, which are arranged on the coil frame 26. The coil frame 26 is preferably made of plastic and is constructed in a substantially hollow cylindrical shape.

[0049] Furthermore, the drive region 20 has at least one armature 22, which is axially movable within the coil 21. The armature 22 is substantially cylindrical and constructed of a magnetic or magnetizable material. Figure 3 The armature 22 is shown to have a first cylindrical region opposite to the valve region 30, on which a second cylindrical region is connected on the valve region side, the second cylindrical region being arranged coaxially with the first cylindrical region and having a smaller diameter than the first cylindrical region.

[0050] A pole tube 23 is arranged between the armature 22 and the coil 21. The pole tube 23 has a hollow cylindrical region that is at least partially attached to the coil 21 or the coil frame 26 and has a substantially constant inner diameter.

[0051] In addition, the electrode 23 has a recess or groove 27 extending in the circumferential direction on its outer periphery (see Figure 3 Therefore, a cavity is formed between the pole tube 23 and the coil 21 or coil frame 26. The recess 27 is used to divert the magnetic flux from the pole tube 23 to the armature 22 during use.

[0052] The armature 22 and the pole tube 23 are arranged coaxially in the installed state, and the armature 22 is arranged in the pole tube 23 so as to be movable in the axial direction. The hollow cylindrical region of the pole tube 23 constitutes an axial guide for the armature 22, so that the armature 22 can be installed in the pole tube 23 so as to be movable in the axial direction.

[0053] Valve region 30 has at least an inlet 32 ​​and an outlet 33 for allowing damper fluid to flow into and out of valve region 30. Valve region 30 is in fluid communication with damper 100 (not shown) via inlet 32 ​​and outlet 33 during use.

[0054] Figure 3 The valve region 30 is shown to have a valve body 31 with multiple flow channels 34 through which damper fluid can flow from inlet 32 ​​to outlet 33. These flow channels 34 are configured as circular orifices in the head 31a of the valve body 31. The head 31a of the valve body 31 has a substantially cylindrical shape.

[0055] The valve region 30 also has a valve slide 35 that cooperates with the armature 22 and is movable relative to the valve body 31 during use, so that the flow channel 34 can be at least partially closed. For this purpose, the flow channel 34 or the cylindrical head 31a of the valve body 31 including the flow channel 34 can be surrounded by the valve slide 35.

[0056] The valve slide 35 is mounted axially movable such that it fully opens the flow passage 34 when the damper valve 10 is open and surrounds the cylindrical head 31a of the valve body 31 and completely closes the flow passage 34 when the damper valve 10 is closed. The valve slide 35 is supported such that it is preferably movable to a plurality of intermediate positions in which the flow passage 34 is partially closed.

[0057] A spring element 36 is arranged between the valve slide 35 and the valve body 31, and the spring element preloads the valve slide 35 relative to the valve body 31. The valve slide 35 is preloaded toward the open position by means of the spring element 36. The spring element 36 applies a force to the valve slide 35 in the axial direction.

[0058] The damper valve 10 has at least one adjusting element 40, which is configured to adjust the distance between the valve slide 35 and the valve body 31 before using the damper valve 10, so as to change the preload of the spring element 36. Figure 3 and 5 As shown in Figure 9: either by means of adjusting element 40, or by changing the position of valve slide 35 relative to valve body 31 (see Figure 9) Figure 3 ), or by changing the position of the head 31a of the valve body 31 relative to the valve slide 35 (see Figures 5 to 9 Use this to adjust the distance.

[0059] In all the embodiments shown, the change in the distance between the valve slide 35 and the valve body 31 by means of the adjusting element 40 causes the preload of the spring element 36 to decrease or increase. Therefore, the spring force of the spring element 36 is adapted to the magnetic force of the drive region 20. This adaptation compensates for various influencing factors on the switching function of the damper valve 10, such as manufacturing tolerances of the valve components and / or effects from the assembly of the damper valve 10. Thus, an optimized switching function of the damper valve 10 is achieved in use.

[0060] If the distance between the valve body 31 and the valve sliding member 35 is reduced by adjusting element 40, the spring preload increases. According to... Figure 3 In this embodiment, the change in spring preload is achieved by moving the valve slide 35 toward the valve body 31 via the adjusting element 40. According to... Figures 5 to 9 In one embodiment, this is achieved by moving the head 31a of the valve body 31 toward the valve slide 35.

[0061] If the distance between the valve body 31 and the valve sliding member 35 is increased by adjusting element 40, the spring preload decreases. According to... Figure 3 In one embodiment, this is achieved by moving the valve slider 35 away from the valve body 31. According to... Figures 5 to 9 In one embodiment, this is achieved by moving the head 31a of the valve body 31 away from the valve slide member 35.

[0062] Figure 3 It is shown that the adjusting element 40 is arranged on the electrode 23 and configured to move the electrode 23 axially, thereby changing the position of the valve slide 35 relative to the valve body 31. If the electrode 23 moves toward the valve body 31, the armature 22 pushes the valve slide 35 toward the valve body 31. The spring preload thus increases. If the electrode 23 moves away from the valve body 31, the valve slide 35 moves away from the valve body 31 due to the spring force of the spring element 36. The spring preload thus decreases.

[0063] In addition Figure 3 As can be seen, electrode 23 has a drive component 25 that, in the installed state, at least partially protrudes from the housing 11 of damper valve 10. Therefore, the drive component 25 can be accessed from the outside using a suitable adjustment tool. In this embodiment, damper valve 10 can be adjusted while already installed with damper 100. In this way, factors from damper 100 that affect the switching function of damper valve 10 can be taken into account during adjustment.

[0064] Figure 3 and Figure 4 The electrode 23 is shown to have a connecting section 24 for connecting the electrode 23 to an inner housing 37 that surrounds the valve region 30 of the damper valve 10. Specifically, the connecting section 24 has external threads. These threads allow the electrode 23 to be screwed into the inner housing 37 during adjustment.

[0065] exist Figures 5 to 9 As can be seen, the adjusting element 40 constitutes the head 31a of the valve body 31. During the adjustment process, the head 31a can move axially relative to the base 31b of the valve body 31, thereby changing the position of the head 31a relative to the valve slide member 35.

[0066] As the head 31a moves toward the valve slide 35, the distance between the head 31a and the valve slide 35 decreases, thereby increasing the spring preload. As the head 31a moves away from the valve slide 35, the distance between the head 31a and the valve slide 35 increases, thereby decreasing the spring preload.

[0067] In addition Figures 5 to 9As can be seen, the adjusting element 40 or head 31a is substantially cylindrical in shape and has a receiving area 41 for the spring element 36 and a coupling area 42 for coupling with an adjusting tool (not shown). The receiving area 41 and the coupling area 42 are arranged on opposite sides of the cylindrical adjusting element 40. The receiving area 41 faces the valve slide 35. The coupling area 42 faces away from the valve slide 35. The coupling area 42 can be accessed (not shown) via the valve area 30 using an adjusting tool, such as a pin wrench.

[0068] Furthermore, the cylindrical adjusting element 40 may have a radially outwardly pointing connecting surface 43 for connecting the adjusting element 40 or the head 31a to the base 31b of the valve body 31. Figures 5 to 9 As shown, the connecting surface 43 of the adjusting element 40 or the head 31a is surrounded by the base 31b of the valve body 31. The connecting surface 43 can move axially relative to the base 31b of the valve body 31 during the adjustment process and can be fixed to the base 31b after the adjustment process.

[0069] Figures 5 to 8 Various variations are shown in which the valve body 31 head 31a or the connecting surface 43 of the head 31a is fixed to the base 31b after the adjustment process. According to... Figure 5 In one embodiment, the head 31a has external threads and the base 31b has internal threads. The head 31a can be threadedly connected to the base 31b in this manner. Figure 6 In the middle, the head 31a is connected to or can be connected to the base 31b by crimping. Figure 7 The head 31a is shown welded to the base 31b. According to... Figure 8 The head 31a is bonded to the base 31b.

[0070] In addition Figure 9 As can be seen, the head 31a of the adjusting element 40 or valve body 31 includes the aforementioned flow channels 34, which are distributed on the outer periphery of the adjusting element 40.

[0071] Figure 1 A shock absorber 100 for a vehicle is shown, the shock absorber 100 including a shock absorber valve 10 according to an embodiment of the present invention. The shock absorber 100 is shown in an external view. Figure 1 The damper 100 is a multi-cylinder type damper. The damper 100 has an inner cylinder in which a piston is guided. An outer cylinder 101 is coaxially mounted around the inner cylinder, and an annular cavity is formed between the inner and outer cylinders 101. To dampen piston movement in at least one, preferably two, directions of motion, a damper valve 10 is in fluid communication with at least one working chamber. The damper valve 10 is mounted on the outer cylinder 101 of the damper 100.

[0072] List of reference numerals

[0073] 10 Shock Absorber Valve

[0074] 11. Shell

[0075] 20 drive areas

[0076] 21 coils

[0077] 22-armor

[0078] 23-electrode

[0079] 24 connecting sections

[0080] 25 drive components

[0081] 26 coil frame

[0082] The groove on the 27 diode

[0083] 30 valve area

[0084] 31 Valve Body

[0085] 31a valve body head

[0086] 31b valve body base

[0087] 32 entrances

[0088] 33 Exports

[0089] 34-channel

[0090] 35 valve sliding parts

[0091] 36 Spring Components

[0092] 37 Inner Shell

[0093] 40 Adjustment Components

[0094] 41 Adjusting the receiving area of ​​the component

[0095] 42 Adjusting the coupling area of ​​the component

[0096] 43 Adjust the connection surface of the component

[0097] 100 shock absorber

[0098] 101 cylinder

Claims

1. A damper valve (10) for a damper (100), the damper valve having at least one valve region (30) and at least one drive region (20), the valve region being through which damper fluid flows, the drive region having at least one coil (21), a ferromagnetic armature (22), and a pole piece (23), wherein, The armature (22) and the electrode (23) are arranged coaxially in the installed state, and the armature (22) is arranged in the electrode (23) in a manner that allows it to move in the axial direction. The valve region (30) has at least an inlet (32), an outlet (33), a valve body (31) with multiple flow channels (34), and a valve slide (35). The valve slide cooperates with the armature (22) and can move relative to the valve body (31) so that the flow channels (34) can be at least partially closed. A spring element (36) is arranged between the valve slide (35) and the valve body (31), and the spring element preloads the valve slide (35) relative to the valve body (31). The damper valve (10) is characterized in that it has at least one adjusting element (40) configured to adjust the distance between the valve slide (35) and the valve body (31) in order to change the preload of the spring element (36).

2. The damper valve (10) according to claim 1, characterized in that, The adjustment element (40) is arranged on the electrode (23) and is configured to move the electrode (23) in the axial direction, thereby changing the position of the valve slide (35) relative to the valve body (31).

3. The damper valve (10) according to claim 1 or 2, characterized in that, The electrode (23) has a drive component (25) that, when installed, protrudes at least partially from the housing (11) of the damper valve (10).

4. The damper valve (10) according to any one of the preceding claims, characterized in that, The electrode (23) has a connecting section (24) for connecting the electrode (23) to the inner shell (37) of the valve region (30) surrounding the damper valve (10), wherein the connecting section (24) has external threads in particular.

5. The damper valve (10) according to any one of the preceding claims, characterized in that, The adjusting element (40) forms the head (31a) of the valve body (31) and is axially movable relative to the base (31b) of the valve body (31), thereby changing the position of the head (31a) relative to the valve slide (35).

6. The damper valve (10) according to any one of the preceding claims, characterized in that, The adjusting element (40) is substantially cylindrical in construction and has a receiving area (41) for the spring element (36) and a coupling area (42) for coupling with the adjusting tool, wherein the receiving area (41) and the coupling area (42) are arranged, in particular, on opposite sides of the cylindrical adjusting element (40).

7. The damper valve (10) according to any one of the preceding claims, characterized in that, The adjusting element (40), especially the substantially cylindrical adjusting element, has a connecting surface (43) pointing outward in the radial direction, which is used to connect the adjusting element (40) to the base (31b) of the valve body (31).

8. The damper valve (10) according to any one of the preceding claims, characterized in that, The adjusting element (40), especially the connecting surface (43) of the adjusting element (40), can be connected to the base (31b) of the valve body (31) by welding, bonding, pressing or threading.

9. The damper valve (10) according to any one of the preceding claims, characterized in that, The adjustment element (40) includes the flow channel (34), wherein the flow channel (34) is distributed on the outer periphery of the adjustment element (40).

10. A shock absorber (100) for a motor vehicle, the shock absorber having at least one shock absorber valve (10) according to any one of the preceding claims, wherein, The damper has at least one external cylinder (101), and the damper valve (10) is connected to the cylinder (21).

11. A motor vehicle having at least one shock absorber (100) according to claim 10.

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