Coil assembly for an actively controlled damping valve assembly for a vehicle

Abstract

The present disclosure relates to a coil assembly (1) for an actively controlled damping valve assembly (2) of a vehicle, comprising a mating surface (11) for mating with an inner surface (201) of a cavity of a valve housing (20) of the damping valve assembly (2) and a fixing member (12) configured to axially and rotationally lock the coil assembly (1) with the valve housing (20), wherein the fixing member (12) is adapted to have an outer surface (120) of substantially circular geometry comprising two or more protrusions (1201, 1202, 1203) circumferentially spaced apart and defining a press-fit interference point with the inner surface (201) of the cavity, such that the coil assembly (1) can be axially and rotationally locked to the valve housing (20) regardless of whether the coil assembly (1) is inserted into the valve housing (20) in a first axial rotation direction or in at least a second axial rotation direction different from the first axial rotation direction relative to the valve housing (20). Furthermore, an actively controlled damping valve assembly (2) for a vehicle and a method of installing a coil assembly into such a damping valve assembly are disclosed.

Description

Technical Field

[0001] This disclosure relates to a coil assembly for an active control damping valve for a vehicle, and more specifically to a coil assembly providing a press-fit interface. This disclosure also relates to an active control damping valve assembly including the coil assembly and a method of mounting the coil assembly into a cavity in a valve housing for the active control damping valve. Background Technology

[0002] When assembling a coil assembly onto the valve body of an active control valve, the coil assembly is typically secured using a retaining device such as a snap ring. While this solution allows for adequate securing, the risk of snap ring damage during assembly is also very high. Furthermore, because the snap ring cannot be inspected after assembly, it is difficult to verify that it is properly attached. This results in a high failure rate during assembly and necessitates manual control and additional costs.

[0003] Furthermore, when the coil assembly is properly secured in the valve housing, the retaining ring needs to work in conjunction with an axial bias force to hold the coil assembly in place, and the force level often varies considerably. This can, in some cases, cause the coil assembly to begin vibrating and generating noise.

[0004] Therefore, it makes sense to improve this conventional method of fixing the coil assembly to the valve body. Summary of the Invention

[0005] The object of this invention is to provide an improved solution that mitigates the aforementioned disadvantages of existing solutions. Specifically, the first object is to provide a coil assembly that is easily fixed in the cavity of the valve housing of a damping valve assembly. The second object is to provide a coil assembly that reduces the failure rate during assembly. The third object is to provide a coil assembly that facilitates manual control for proper assembly. Another object is to provide a coil assembly that reduces magnetic leakage from the helical tube of the coil assembly during use. The first, second, and third objects are achieved at least by the invention as defined in the independent claims, and are further achieved by the invention as defined in the dependent claims.

[0006] According to a first aspect of the invention, a coil assembly for an active control damping valve assembly for a vehicle is provided. The coil assembly includes: a mating surface for engaging with an inner surface of a cavity of a valve housing of the damping valve assembly; and a retaining member configured to axially and rotatably lock the coil assembly to the valve housing, wherein the retaining member is adapted to have an outer surface with a substantially circular geometry, the outer surface including two or more circumferentially spaced protrusions and defining a press-fit interference point with the inner surface of the cavity, such that the coil assembly can be axially and rotatably locked to the valve housing regardless of whether the coil assembly is inserted into the valve housing in a first axial rotation direction or in at least a second axial rotation direction relative to the valve housing, different from the first axial rotation direction.

[0007] Two or more protrusions enable the coil assembly to be axially and rotatably locked to the valve housing. This locking therefore occurs when the coil assembly is inserted into the valve housing. Thus, this coil assembly is characterized by its simple installation and securing process, thereby solving the first objective of the invention. This is further improved by the fact that the coil assembly is not limited to being fixed in a single specific axial rotational direction. Instead, there is a certain degree of freedom relative to the axial rotational direction when the coil assembly is installed and secured to the valve housing. Furthermore, unlike some conventional solutions, a retaining ring is not required to lock the coil assembly in place. Therefore, there is no risk of retaining ring damage or misplacement during assembly. Thus, this coil assembly reduces the failure rate during assembly, thereby solving the second objective. Moreover, the absence of a retaining ring also means that manual control of the assembly is convenient, as it can be determined primarily from the outside. Therefore, this invention also solves the third objective of the invention.

[0008] The retaining member is shaped and sized such that the inner surfaces of at least two interacting protrusions must deform upon pressing the at least two protrusions, thereby defining the press-fit interference point. Since the at least two protrusions are circumferentially spaced apart, the press-fit interference points are ultimately spaced apart from each other. This allows the coil assembly to rotate and lock axially with the valve housing. Therefore, when the coil assembly is simply inserted into the valve housing, it is secured to the valve housing. Thus, a retaining ring is not required to secure the coil assembly to the valve housing.

[0009] An actively controlled damping valve assembly can refer to a damping valve assembly suitable for having a device for automatically adjusting the damping force. Preferably, the device for adjusting the damping force is a coil assembly disclosed herein. By adjusting the current flowing through the coil of the coil assembly, the strength and direction of the magnetic field inside the coil can be adjusted, allowing a plunger placed within the coil to move in a controlled manner. The position of the plunger can throttle the damping fluid in the damping valve assembly, thereby achieving specific damping force characteristics. The position of the plunger can adjust the pilot pressure associated with the pilot valve.

[0010] A vehicle can refer to, for example, a four-wheeled vehicle or a two-wheeled vehicle. It can refer to a car. It can refer to a bicycle or a motorcycle. It can refer to an off-road motorcycle.

[0011] A fit can refer to object A being geometrically compatible with object B in terms of shape and size. For example, object A may define a cylindrical surface, and object B may define a cylindrical surface with similar curvature but scaled differently relative to object A. Furthermore, a fit can refer to objects A and B directly engaging with each other, or at least partially providing a gap between objects A and B.

[0012] Therefore, the mating surfaces are adapted to mate with the inner surface of the cavity of the valve body, such that they are at least partially in contact, or such that a gap is at least partially formed between the mating surfaces and the inner surface.

[0013] The mating surface can be cylindrical. The inner surface of the cavity of the valve body can be cylindrical. The mating surface can be defined by a body of a coil member surrounding the coil assembly. The body surrounding the coil member can be tubular, thereby defining a space extending along the axis of the body, in which the plunger can move under the influence of a magnetic field generated by the current flowing through the coil member.

[0014] According to one embodiment, the protrusions are circumferentially spaced apart. In the case of only two protrusions, these protrusions are then arranged along opposite sides of the outer surface of the fixing member. This allows the coil assembly to benefit from increased radial and axial stability.

[0015] According to one embodiment, the coil assembly includes three protrusions. By having three protrusions, the coil assembly can particularly benefit from increased rotational and axial stability. This particular configuration can also counteract axial tilt.

[0016] According to one embodiment, at least one of the protrusions includes a curved outer surface that defines a press-fit interference surface with the inner surface of the cavity. This allows for a larger contact surface with the inner surface of the valve housing. This enables a more durable solution because the forces acting on the components in the arrangement will be less concentrated.

[0017] According to one embodiment, at least two of the protrusions include curved outer surfaces that define a press-fit interference surface with the inner surface of the cavity, wherein the at least two curved outer surfaces have the same radius of curvature.

[0018] According to one embodiment, the curved outer surface or at least one of the curved outer surfaces extends about 10-50 degrees in the circumferential direction of the fixing member. The curved outer surface or at least one of the curved outer surfaces extends about 10-20 degrees, 20-30 degrees, 30-40 degrees, or 40-50 degrees in the circumferential direction of the fixing member.

[0019] According to one embodiment, the coil assembly is adapted to be insertable into the valve housing regardless of its axial rotational direction. This allows for greater freedom of movement in the axial rotational direction when the coil assembly is inserted into the valve housing.

[0020] According to one embodiment, the fixing member is made of a material comprising metal, preferably a magnetically conductive metal. Non-limiting examples include metals such as iron, aluminum, nickel, and cobalt. The fixing member may be made of a material comprising any such material or a combination thereof.

[0021] According to one embodiment, the fixing member is adapted in shape, size, and material to close the magnetic circuit of the coil assembly. By closing the magnetic circuit, i.e., sealing the magnetic field generated by the current flowing through the coil assembly, magnetic field leakage can be prevented. Furthermore, this also reduces magnetic scattering.

[0022] According to one embodiment, the fixing member includes a disk shape and is coaxially arranged in the coil assembly. According to another embodiment, the fixing member is an integrated member of the coil assembly.

[0023] According to a second aspect of the invention, an active control damping valve assembly for a vehicle is provided. The damping valve assembly includes: a valve housing defining a cavity; an active control damping valve adapted to be disposed in the valve housing; and a coil assembly according to a first aspect of the invention or any embodiment thereof, wherein the valve housing is configured to elastically deform by radial forces of two or more protrusions of the coil assembly, thereby rotatably and axially locking the coil assembly to the valve housing.

[0024] The vehicle can refer to a four-wheeled vehicle or a two-wheeled vehicle. It can refer to a car. It can refer to a bicycle or a motorcycle. It can refer to an off-road motorcycle.

[0025] According to a third aspect of the invention, a method is provided for mounting a coil assembly according to a first aspect of the invention or any embodiment thereof into a cavity of a valve housing for an actively controlled damping valve. The method includes the steps of: inserting the coil assembly into the cavity such that a mating surface of the coil assembly mates with an inner surface of the cavity of the valve housing, and deforming the valve housing wall, wherein two or more protrusions are circumferentially spaced apart, and axially and rotatably locking the coil assembly to the valve housing, thereby securing it to the two or more protrusions by press-fit interference points with the inner surface of the cavity, wherein the step of inserting the coil assembly into the cavity of the valve housing includes inserting the coil assembly in a first axial rotational direction or at least a second axial rotational direction different from the first axial rotational direction.

[0026] According to one embodiment, the coil assembly is adapted to be insertable into the valve housing regardless of its axial rotation direction. This allows for increased freedom in mounting the coil assembly into the valve housing, thus eliminating the need for a specific axial rotation direction.

[0027] According to one embodiment, the valve body can be deformed by means of two or more protrusions such that the ratio of the axial force to the radial force applied at each press-fit interference point is approximately 0.4-0.8. This ratio can be 0.4-0.5, 0.5-0.6, 0.6-0.7, or 0.7-0.8.

[0028] This invention is defined by the appended independent claims, and embodiments are set forth in the appended dependent claims, the following description and the accompanying drawings. Attached Figure Description

[0029] The invention will now be described in more detail with reference to the accompanying drawings, in which:

[0030] Figures 1A to 1C The illustration shows a coil assembly inserted into a cavity of the valve housing of an active control damping valve assembly according to an embodiment of the present invention;

[0031] Figures 2a to 2b A cross-sectional side view is shown when the coil assembly is inserted into the cavity of the valve housing of the active control damping valve assembly.

[0032] Figures 3A to 3C A coil assembly according to an embodiment of the present invention is shown;

[0033] Figures 4a to 4c illustrate a fixing member according to an embodiment of the present invention;

[0034] Figure 5 A cross-sectional view is shown when the coil assembly is inserted into the cavity of the valve housing of the active control damping valve assembly;

[0035] Figure 6The steps of a method for mounting a coil assembly into a cavity of a valve housing of an active control damping valve assembly according to an embodiment of the present invention are shown. Detailed Implementation

[0036] The invention will now be described more fully with reference to the accompanying drawings, in which preferred embodiments of the invention are illustrated. However, the invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. In the drawings, the same numerals refer to the same elements.

[0037] Figures 1A to 1C The illustration shows the coil assembly 1 being inserted into the cavity of the valve housing 20 of the active control damping valve assembly 2 according to an embodiment of the present invention. Specifically, Figure 1A A perspective view of the arrangements 1 and 2 is shown. Figure 1B A side view of the arrangements 1 and 2 is shown. Figure 1C A top view of the arrangements 1 and 2 is shown. As can be seen from these figures, the valve housing 20 shown has a substantially cylindrical shape. The coil assembly 1 is adapted to be inserted into the end opening of the valve housing 20 and adapted to be secured by a fixing member ( Figures 1A to 1C (Not shown in the figure) Rotationally and axially fixed. Although the figures depict the valve housing 20 and coil assembly 1 as generally cylindrical, the valve housing 20 and coil assembly 1 are not limited to this shape. In other embodiments, the housing and coil may have other shapes, such as polygonal or elliptical.

[0038] Figure 2 shows a cross-sectional side view of the coil assembly 1 inserted into the cavity of the valve housing 20 of the active control damping valve assembly 2. Figures 3A to 3C The coil assembly 1 is shown separately, without the valve housing. Figure 3A A 3D view is shown. Figure 3B A side view is shown, and Figure 3C A cross-sectional side view is shown.

[0039] like Figures 2a to 3cAs shown, coil assembly 1 typically extends along axis R. Coil assembly 1 includes coil member 14. As shown in FIG. 2, in the illustrated embodiment, coil member 14 is arranged symmetrically about axis R. Coil assembly 1 includes a mating surface 11 for engaging with the inner surface 201 of the cavity of valve housing 20 of damping valve assembly 2. The mating surface 11 and the inner surface 201 are each formed to fit together and may each have a cylindrical shape as shown. However, coil assembly 1 is adapted to define a gap between mating surface 11 and inner surface 201 of valve housing 20. Coil assembly 1 may be adapted to have a predetermined gap between mating surface 11 and inner surface 201 or to have substantially no gap. The mating surface is defined by a body 11 surrounding coil 14. Body 11 includes a tubular shape having a central hole that defines space for a plunger to move axially along axis R under the influence of the magnetic force generated by coil member 14.

[0040] The coil assembly 1 also includes a retaining member 12 configured to axially and rotatably lock the coil assembly 1 to the valve housing 20. The retaining member 12 is adapted to have an outer surface 120 with a substantially circular geometry, the outer surface 120 including two or more circumferentially spaced protrusions 1201. The two or more protrusions 1201 define a press-fit interference point P with the inner surface 201 of the cavity, such that the coil assembly 1 can be axially and rotatably locked to the valve housing 20. Furthermore, this locking is independent of whether the coil assembly 1 is inserted into the valve housing 20 in a first axial rotation direction or in at least a second axial rotation direction relative to the valve housing 20, different from the first axial rotation direction. The first and second axial rotation directions represent different axial rotation directions of the coil assembly 1 about an axis R. The first and second axial rotation directions are related to each other by means of the rotation of the coil assembly 1 about the axis R. Therefore, the coil assembly 1 is not limited to being inserted and secured to the valve housing 20 in a particular orientation. This allows for increased degrees of freedom when inserting the coil assembly 1 into the valve housing 20. Specifically, in one embodiment, the coil assembly 1 can be inserted into the valve housing 20 regardless of its axial rotation direction. Therefore, the coil assembly 1 can be freely inserted and secured to the valve housing in any axial rotation direction. This allows for greater freedom of movement when the coil assembly 1 is inserted into the valve housing 20.

[0041] Once the coil assembly 1 is inserted into the cavity of the valve housing 20, the protrusions 1201 engage with the inner surface 201. As previously described, these protrusions define a press-fit interference point P with the inner surface 201. In the embodiment shown in the figure, the retaining member 12 is disc-shaped, wherein the protrusions 1201 extend radially outward from the outer surface 120 of the disc. The retaining member 12 also includes through holes. The through holes are arranged coaxially with the holes surrounding the body of the coil assembly 14. They form a space extending along the axis R.

[0042] exist Figure 2aIn the example shown, the retaining member 12 is arranged between the portion of the body surrounding the coil member 14 and the intermediate portion 13 of the coil assembly 1. The intermediate portion 13 can be any part of the coil assembly 1 located above the retaining member (as shown). "Above" in this document should be interpreted as the side of the retaining member opposite the coil member 14. The intermediate portion 13 of the coil assembly has a shape and size adapted to engage with the inner surface 201 of the valve housing. The intermediate portion may also include an aperture 130 for defining a space where a sealing member 135 can be arranged. The sealing member 135 can be, for example, an O-ring or other sealing flexible material. The sealing member 135 can be arranged anywhere between the valve housing 20 and the intermediate portion 13 of the coil assembly 1. Preferably, the seal is arranged on the outside of the retaining member 12 to protect the retaining member from dirt and moisture that may enter the coil assembly from the outside. The coil assembly also has an electrical connector at the top for energizing the coil.

[0043] exist Figure 2b In one embodiment, the fixing member 12 is arranged between the body surrounding the coil member 14 and the body 11 defining the end cap 13 of the coil assembly 1. Furthermore, the sealing member 135 is arranged between the end cap 13 and the valve housing 20.

[0044] Figures 4a and 4c illustrate a fixing member according to an embodiment of the present invention. As previously described, the fixing member 12 is disc-shaped and includes an outer surface 120 with a substantially circular geometry. Figures 4A to 4C The specific embodiment shown includes three circumferentially spaced protrusions 1201, 1202, and 1203. Furthermore, each of the protrusions 1201, 1202, and 1203 includes a curved outer surface that defines a press-fit interference surface with the inner surface 201 of the cavity, and not merely a press-fit interference point. Additionally, the curved surfaces of the protrusions 1201, 1202, and 1203 have the same radius of curvature. The curved surfaces of the protrusions 1201, 1202, and 1203 extend further in the circumferential direction by approximately 40-50 degrees. However, the curved surfaces of the protrusions 1201, 1202, and 1203 can extend in the circumferential direction at any location, 10-20 degrees, 20-30 degrees, 30-40 degrees, 40-50 degrees, or greater, depending on the required size of the press-fit interference surface. Furthermore, as previously described, the fixing member 12 includes a through-hole 122. The fixing member 12 also includes a cutout region 121. The edge adjacent to the cut area 121 defines a rectangle.

[0045] In one particular embodiment, the retaining member 12 is made of a material comprising metal, preferably a magnetically conductive metal. This is advantageous because when current flows through the coil member 14, it allows the magnetic circuit generated by the coil member 14 to be closed. This prevents excessive magnetic field leakage. Furthermore, the retaining member 12 can be further adapted in shape, size, and material to close the magnetic circuit of the coil assembly 1.

[0046] As previously described, the fixing member 12 is arranged in the middle portion 13 surrounding the main body 11 of the coil member 14 and the coil assembly 1. Figure 2a ) or end cap ( Figure 2b Between ), the fixing member 12 can be an integrated member of the coil assembly 1. In other embodiments, the fixing member can be a separate member that can be mounted onto the coil assembly 1.

[0047] Figure 5 A cross-sectional view is shown when the coil assembly 1 is inserted into the cavity of the valve housing 20 of the active control damping valve assembly 2. When the coil assembly 1 is inserted into the cavity of the valve housing 20, the retaining member 12 initially engages with the inner surface 201 of the valve housing 20 via protrusions 1201, 1202, 1203 (best shown in Figures 4a to 4c). When the end cap or intermediate portion 13 of the coil housing 1 is properly positioned relative to the valve housing 20 in its final installation position, the protrusions 1201, 1202, 1203 radially press against the inner surface 201. This causes deformation of the valve housing 20, preferably elastic deformation. Therefore, the coil assembly 1 is held in place by the valve housing 20 pressing against the protrusions 1201, 1202, 1203, thereby defining the press-fit interference point or surface. A radial force F is applied at each press-fit interference point. R and axial force F A Axial force F A With radial force F R The force ratio R F It can be 0.4-0.8. This further ensures that the coil assembly 1 is securely held in place on the valve housing 20. For example, the nominal axial force FA can be 600-2100N, and the nominal radial force FR can be 1500-5250N.

[0048] As mentioned above, Figures 1, 2A to 2C, Figure 5 A portion of an active control damping valve assembly 2 for a vehicle is shown, more specifically, a portion of the valve housing 20 of the active control damping valve assembly 2. The damping valve assembly includes: a valve housing 20 defining a cavity, an active control damping valve adapted to be disposed within the valve housing 20, and the coil assembly 1 detailed above. The valve housing 20 is configured to deform, preferably elastically deform, by two or more protrusions 1201, 1202, 1203 of the coil assembly 1, thereby rotationally and axially locking the coil assembly 1 to the valve housing 20. The vehicle is preferably an automobile.

[0049] Figure 6 The present invention illustrates the steps of a method S0 for mounting a coil assembly 1 into a cavity of a valve housing 20 for an active control damping valve assembly 2, according to an embodiment of the invention. The method includes step S1: inserting the coil assembly 1 into the cavity such that the mating surface 11 of the coil assembly 1 mates with the inner surface 201 of the cavity of the valve housing 20. Method S0 further includes step S2: deforming the valve housing wall, wherein two or more protrusions 1201, 1202, 1203 are circumferentially spaced apart. Method S0 further includes step S3: axially and rotatably locking the coil assembly 1 to the valve housing 20, thereby securing it by press-fit interference points with the inner surfaces of the cavities of the two or more protrusions of the coil assembly 1. Step S1, inserting the coil assembly 1 into the cavity of the valve housing 20, includes inserting the coil assembly 1 in a first axial rotation direction or at least a second axial rotation direction different from the first axial rotation direction.

[0050] The coil assembly 1 is adapted to be inserted into the valve housing 20 regardless of its axial rotation direction.

[0051] The valve body 20 can be deformed by means of two or more protrusions 1201, 1202, 1203, such that the ratio of the axial force FA to the radial force FR applied at each press fit interference point is approximately 0.4-0.8.

[0052] Preferred embodiments and examples of the invention have been disclosed in the accompanying drawings and description. Although specific terms have been used, they are used only in a general and descriptive sense and not for limiting purposes. The scope of the invention is set forth in the following claims.

Claims

1. A coil assembly for an active control damping valve assembly in a vehicle, comprising: Coil component (14); The body (11) surrounds the coil member (14) and defines a mating surface for mating with the inner surface (201) of the cavity of the valve housing (20) of the damping valve assembly (2); The fixing member (12) is configured to axially and rotatably lock the coil assembly (1) to the valve housing (20). The fixing member (12) is adapted to have an outer surface (120) with a circular geometry, the outer surface (120) including two or more protrusions (1201, 1202, 1203) spaced apart on the circumference, the two or more protrusions defining a press-fit interference point with the inner surface (201) of the cavity, such that the coil assembly (1) can be axially and rotatably locked to the valve housing (20), regardless of whether the coil assembly (1) is inserted into the valve housing (20) in a first axial rotation direction or in at least a second axial rotation direction relative to the valve housing (20) different from the first axial rotation direction; and Middle part or end cap, The fixing member (12) is arranged between the main body (11) surrounding the coil member (14) and the intermediate portion or the end cap. Furthermore, in the installed state, the sealing member (135) is arranged between the valve body (20) and the intermediate portion or the end cap, and the sealing member (135) is arranged on the outside of the fixing member (12).

2. The coil assembly according to claim 1, wherein, The sealing member (135) is arranged between the outer side of the valve body (20) and the inner side of the middle portion or the end cap.

3. The coil assembly according to claim 1, wherein, The protrusions (1201, 1202, 1203) are equidistant from each other on the circumference.

4. The coil assembly according to claim 1, comprising three protrusions (1201, 1202, 1203).

5. The coil assembly according to claim 1, wherein, At least one of the protrusions (1201, 1202, 1203) includes a curved outer surface that defines a press-fit interference surface with the inner surface (201) of the cavity.

6. The coil assembly according to claim 1, wherein, At least two of the protrusions (1201, 1202, 1203) include curved outer surfaces that define press-fit interference surfaces with the inner surface (201) of the cavity, wherein the at least two curved outer surfaces have the same radius of curvature.

7. The coil assembly according to claim 5, wherein, The curved outer surface or at least one of the curved outer surfaces extends 10-50 degrees in the circumferential direction of the fixed member (12).

8. The coil assembly according to claim 1, wherein, The coil assembly (1) is adapted to be inserted into the valve housing (20) regardless of its axial rotation direction.

9. The coil assembly according to claim 1, wherein, The fixing member is made of a material including metal.

10. The coil assembly according to claim 9, wherein, The fixing member is adapted in shape, size and material to close the magnetic circuit of the coil assembly.

11. The coil assembly according to claim 1, wherein, The fixing member (12) is disc-shaped and coaxially arranged in the coil assembly (1).

12. The coil assembly (1) according to any one of claims 1 to 11, wherein, The fixing member (12) is an integrated member of the coil assembly (1).

13. An active control damping valve assembly for a vehicle, comprising: Valve housing (20) defines the cavity; An active control damping valve is adapted to be disposed in the valve housing (20); as well as The coil assembly (1) according to any one of the preceding claims. The valve housing (20) is configured to deform by two or more protrusions (1201, 1202, 1203) of the coil assembly (1) thereby rotatably and axially locking the coil assembly (1) to the valve housing (20).

14. A method for mounting a coil assembly according to any one of claims 1 to 12 into a cavity of a valve housing for an active control damping valve assembly, comprising the steps of: - (S1) Insert the coil assembly (1) into the cavity such that the mating surface of the coil assembly (1) defined by the body (11) surrounding the coil member (14) mates with the inner surface (201) of the cavity of the valve housing (20); as well as - (S2) Deform the valve housing wall by means of two or more circumferentially spaced protrusions (1201, 1202, 1203) of the fixing member (12) of the coil assembly (1), wherein the fixing member (12) is arranged between the body (11) surrounding the coil member (14) and the intermediate portion or end cap of the coil assembly (1); and - (S3) The coil assembly (1) is axially and rotatably locked to the valve housing (20), thereby securing it at the two or more protrusions of the coil assembly by press-fit interference points with the inner surface of the cavity. The step of inserting the coil assembly (1) into the cavity of the valve housing (20) includes inserting the coil assembly (1) in a first axial rotation direction or at least a second axial rotation direction different from the first axial rotation direction, and arranging the sealing member (135) between the valve housing (20) and the intermediate portion or the end cap, and arranging the sealing member (135) on the outside of the fixing member (12).

15. The method according to claim 14, wherein, Arranging the sealing member (135) between the valve body (20) and the intermediate portion or the end cap includes: arranging the sealing member (135) between the outer side of the valve body (20) and the inner side of the intermediate portion or the end cap.

16. The method of claim 14, wherein, The coil assembly (1) is adapted to be inserted into the valve housing (20) regardless of its axial rotation direction.

17. The method according to any one of claims 14 to 16, wherein, The valve housing (20) can deform by means of the two or more protrusions (1201, 1202, 1203), such that the axial force (F) applied at each press-fit interference point... A ) and radial force (F R The force ratio (R) F The value is 0.4-0.8.

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