CN217690682U - Electromagnetic coil structure and adjustable damping device - Google Patents

Abstract

An electromagnetic coil structure and an adjustable damping device. The electromagnetic coil structure includes: a coil holder including a cylindrical portion and a beam portion connected to each other, an outer side of the cylindrical portion being provided with an annular groove extending in a circumferential direction of the cylindrical portion, the beam portion being connected to one end in an axial direction of the cylindrical portion and being connected to two portions of the cylindrical portion that are separated from each other in the circumferential direction, the beam portion extending along a chord of an inner circle of the cylindrical portion; and a lead wire wound in the groove of the cylindrical portion to form a coil structure, wherein two end portions of the lead wire extend into the beam portion from two ends of the beam portion and are gathered to the middle of the beam portion along the extending direction of the beam portion. The electromagnetic coil structure is compact in structure, easy to manufacture and stable in positioning.

Description

Electromagnetic coil structure and adjustable damping device

Technical Field

Embodiments of the present disclosure relate to an electromagnetic coil structure and an adjustable damping device.

Background

At present, a damper mechanism can be connected with a piston rod of a shock absorber in a vehicle, the damper mechanism includes a cylinder body and a piston connected with the piston rod, the piston divides a rod body into a working chamber on the side where the piston rod is located and a working chamber on the side far away from the piston rod, and the two working chambers are used for filling a damping medium. Among them, electromagnetic damping valves are also often used in damper mechanisms. The electromagnetic damping valve requires an electromagnetic coil to apply an electromagnetic force to a movable member in the electromagnetic damping valve to drive the movable member to move.

SUMMERY OF THE UTILITY MODEL

At least one embodiment of the present disclosure provides an electromagnetic coil structure including: a coil holder including a cylindrical portion and a beam portion connected to each other, an outer side of the cylindrical portion being provided with an annular groove extending in a circumferential direction of the cylindrical portion, the beam portion being connected to one end in an axial direction of the cylindrical portion and being connected to two portions of the cylindrical portion that are separated from each other in the circumferential direction, the beam portion extending along a chord of an inner circle of the cylindrical portion; and a lead wire wound in the groove of the cylindrical portion to form a coil structure, wherein two end portions of the lead wire extend into the beam portion from two ends of the beam portion and are gathered to the middle of the beam portion along the extending direction of the beam portion.

In the electromagnetic coil structure according to some embodiments of the present disclosure, the coil holder further includes a hollow columnar portion having one end connected to a side of the beam portion away from the cylindrical portion, and both end portions of the lead wire are configured to be drawn out via a hollow portion of the hollow columnar portion.

In the electromagnetic coil structure according to some embodiments of the present disclosure, the beam portion extends along a diameter of an inner circle of the cylindrical portion.

In the electromagnetic coil structure according to some embodiments of the present disclosure, a dimension in an extending direction of the beam portion is substantially the same as a maximum outer diameter of the cylindrical portion.

In the electromagnetic coil structure according to some embodiments of the present disclosure, an inner wall of the cylinder portion is provided with a plurality of strip-like protrusions extending in the axial direction, the plurality of strip-like protrusions being provided at intervals in a circumferential direction of the cylinder portion.

In the electromagnetic coil structure according to some embodiments of the present disclosure, an orthographic projection of the beam portion on a first plane perpendicular to the axial direction partially overlaps with an orthographic projection of an inner circle of the cylinder portion on the first plane, and a width of the orthographic projection of the beam portion on the first plane is 1/2-1/6 of a diameter of the inner circle of the cylinder portion.

In the electromagnetic coil structure according to some embodiments of the present disclosure, an end portion of the cylindrical portion that is remote from the beam portion is provided with a plurality of protrusions that are provided at intervals in the circumferential direction.

The electromagnetic coil structure according to some embodiments of the present disclosure further includes a coil holder including a base plate and first and second spaced apart sub-portions on the base plate with a positioning groove disposed therebetween, the positioning groove configured to receive the beam portion and circumferentially position the coil support.

In the electromagnetic coil structure according to some embodiments of the present disclosure, a central portion of the bottom plate is provided with a through hole, and an orthogonal projection of the through hole on a first plane perpendicular to the axial direction falls within an orthogonal projection of the positioning groove on the first plane.

In the electromagnetic coil structure according to some embodiments of the present disclosure, the through hole of the bottom plate is configured to pass through the hollow cylindrical portion and radially position the coil support.

In the electromagnetic coil structure according to some embodiments of the present disclosure, a face of the first sub-part facing the second sub-part and a face far away from the bottom plate are provided with notches, and an orthographic projection of the notches on the first plane has a shape of a figure enclosed by a minor arc and a line segment connecting both ends of the minor arc; the first and second sub-portions are symmetrical with respect to a second plane parallel to the axial direction.

In the electromagnetic coil structure according to some embodiments of the present disclosure, a radius of curvature of the minor arc is substantially the same as a radius of an inner circle of the cylindrical portion.

In the electromagnetic coil structure according to some embodiments of the present disclosure, an orthographic projection of the notch on the first plane falls within an orthographic projection of an inner circle of the cylindrical portion on the first plane.

In the electromagnetic coil structure according to some embodiments of the present disclosure, the minor arc is aligned with an inner side wall of the cylindrical portion in the axial direction.

In an electromagnetic coil structure according to some embodiments of the present disclosure, the base plate, the first sub-portion, and the second sub-portion are a unitary structure.

In the electromagnetic coil structure according to some embodiments of the present disclosure, the cylindrical portion, the beam portion, and the hollow columnar portion are an integral structure.

In the electromagnetic coil structure according to some embodiments of the present disclosure, an outer diameter of the coil holder is substantially the same as a maximum outer diameter of the cylindrical portion.

There is provided in accordance with at least one disclosed embodiment an adjustable damping apparatus including: a housing and a solenoid structure according to any of the embodiments described above. The housing includes a hollow cylindrical portion, the solenoid structure is disposed within the hollow cylindrical portion, an outer diameter of the solenoid structure is substantially the same as an inner diameter of the hollow cylindrical portion.

An adjustable damping device according to some embodiments of the present disclosure further includes an electromagnetic damping valve body disposed at least partially within the cylindrical portion.

An adjustable damping device according to some embodiments of the present disclosure further includes a main valve body disposed on a side of the electromagnetic damping valve body away from the beam portion of the coil support, the main valve body configured to be driven by the electromagnetic damping valve body.

According to the electromagnetic coil structure disclosed by the embodiment of the disclosure, the conducting wires for winding the electromagnetic coil respectively enter the beam part from two ends of the beam part, so that the risk of short circuit at two ends of the conducting wires is reduced; further, since the beam portion spans the inner circle of the cylindrical portion, when the coil support is mounted on the coil holder, the coil support is more stabilized by the positioning of the beam portion. In addition, the beam portion crosses the inner circle of the cylindrical portion and is connected to two portions separated from each other in the circumferential direction of the cylindrical portion, so that the entire structure of the coil support is easier to manufacture, thereby simplifying the process.

Drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the drawings of the embodiments will be briefly described below, and it is obvious that the drawings in the following description only relate to some embodiments of the present invention, and are not intended to limit the present invention.

Fig. 1 is a perspective view of a coil support of an electromagnetic coil structure according to some embodiments of the present disclosure.

FIG. 2 is a cross-sectional view of at least a portion of the structure of an electromagnetic coil structure according to some embodiments of the present disclosure.

Fig. 3 is a schematic top view of the structure shown in fig. 2.

Fig. 4 is a perspective view of a coil holder according to some embodiments of the present disclosure.

Fig. 5 is a cross-sectional view of a coil holder according to some embodiments of the present disclosure.

Fig. 6 is a top view of a coil holder according to some embodiments of the present disclosure.

FIG. 7 illustrates a schematic cross-sectional view of an adjustable damping device according to some embodiments of the present disclosure.

Description of reference numerals:

110: a cylindrical portion; 120: a beam section; 130: a hollow columnar portion; 200: a wire; 300: a coil holder; 400: an adjustable damping device; 111: an annular groove; 112: an inner sidewall; 113: strip-shaped bulges; 114: a protrusion; 301: a base plate; 302: a first sub-portion; 303: a second sub-portion; 304: a notch; 305: a strip-shaped groove; 306: a through hole; 3041: a minor arc; 3042: a line segment; 401: a housing; 402: an electromagnetic damping valve body; 403: a main valve body; 404: an annular member; 405: a seal ring; 406: and (4) an annular bracket.

Detailed Description

In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention will be combined below to clearly and completely describe the technical solution of the embodiments of the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. All other embodiments, which can be obtained by a person skilled in the art without any inventive work based on the described embodiments of the present invention, belong to the protection scope of the present invention.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the description and in the claims does not indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one.

The electromagnetic damping valve is a component of an adjustable damper structure, which is used as a pilot valve of a main valve to drive the closed and open states of the main valve. The design of the solenoid structure can affect the stability, compactness and durability of the overall damper structure. An embodiment of the present disclosure provides an electromagnetic coil structure including: the coil support comprises a cylindrical part and a beam part which are connected with each other, wherein an annular groove extending along the circumferential direction of the cylindrical part is arranged on the outer side of the cylindrical part, the beam part is connected to one end of the cylindrical part in the axial direction and is connected with two mutually separated parts in the circumferential direction of the cylindrical part, the beam part extends along the chord of the inner circle of the cylindrical part, a lead is wound in the groove of the cylindrical part to form a coil structure, and two end parts of the lead respectively extend into the beam part from two ends of the beam part and are converged to the middle of the beam part along the extending direction of the beam part. According to the electromagnetic coil structure disclosed by the embodiment of the disclosure, the conducting wires for winding the electromagnetic coil respectively enter the beam part from two ends of the beam part, so that the risk of short circuit at two ends of the conducting wires is reduced; in addition, since the beam portion spans the inner circle of the cylindrical portion, when the coil support is mounted on the coil holder, the coil support is more stable by the positioning of the beam portion. In addition, the beam portion crosses the inner circle of the cylindrical portion and is connected to two portions separated from each other in the circumferential direction of the cylindrical portion, so that the entire structure of the coil support is easier to manufacture, thereby simplifying the process.

The electromagnetic coil structure and the adjustable damping device of the present disclosure will be described in more detail with reference to some embodiments, so as to make the technical solutions according to the present disclosure and the advantages and technical effects thereof clearer.

Fig. 1 is a perspective view of a coil support of an electromagnetic coil structure according to some embodiments of the present disclosure. As shown in fig. 1, the coil support 100 includes a cylindrical portion 110, a beam portion 120 connected to one end of the cylindrical portion 110, and a hollow columnar portion 130 connected to the beam portion 120 apart from the cylindrical portion 110. The perspective view of fig. 1 shows only a substantial component of the coil support, and will be described in more detail below in connection with various portions of the solenoid coil structure.

FIG. 2 is a cross-sectional view of at least a portion of the structure of an electromagnetic coil structure according to some embodiments of the present disclosure; fig. 3 is a schematic top view of the structure shown in fig. 2. For example, the cross-sectional view of fig. 2 is a view taken along line AA' in fig. 3. The cross-sectional view of fig. 2 shows a portion of the coil support 100 and a wire 200 wound on the coil support 100.

As shown in fig. 2, the coil support 100 includes a cylindrical portion 110 and a beam portion 120 connected to each other. The outer side of the cylindrical portion 110 is provided with an annular groove 111 extending in the circumferential direction of the cylindrical portion 110. The beam portion 120 is connected to one end of the cylindrical portion 110 in the axial direction. For example, the laterally extending dashed line in fig. 2 schematically shows the axis of the coil support 100. As can be seen in conjunction with fig. 2 and 3, the beam portion 120 is connected to two portions separated from each other in the circumferential direction of the cylinder portion 110. Therefore, the beam portion 120 spans at least the inner circle of the cylindrical portion 110. As can be seen from the top view of fig. 3, the beam portion 120 extends along one chord of the inner circle of the cylindrical portion 110.

For example, the extension of the beam portion 120 along the chord of the inner circle of the cylindrical portion 110 means that the center line of the extension direction of the beam portion 120 overlaps with the chord of the inner circle in the above-described axial direction. In embodiments according to the present disclosure, the beam portion 120 may extend along any chord of the cylinder portion 110. However, when the chord is larger than 1/2 of the diameter of the inner circle, the length of the beam part can be made longer, and the structure is more stable. In some examples, the beam portion 120 extends along one diameter (the longest chord) of the inner circle, which makes the manufacturing process of the coil support simpler and facilitates the fitting and positioning with other components based on the improved stability. The cooperation of the coil support with other components will be described in more detail below.

For example, as shown in fig. 3, an orthographic projection of the beam portion 120 on a first plane (which may be a paper plane in the view of fig. 3, for example) perpendicular to the axial direction partially overlaps with an orthographic projection of the inner circle of the cylinder portion 110 on the first plane, and a width of the orthographic projection of the beam portion 120 on the first plane perpendicular to the axial direction is 1/2-1/6 of a diameter of the inner circle of the cylinder portion 110. For example, the width of the orthographic projection here may refer to a dimension in a direction perpendicular to the extending direction of the orthographic projection. With the width of the beam portion thus set, the structural stability of the beam portion and the stability of positioning in cooperation with other members can be ensured.

In some embodiments according to the present disclosure, the electromagnetic coil structure comprises a wire. As shown in fig. 2, the wire 200 is wound in the annular groove 111 of the cylindrical part 110 to form a coil structure. For convenience of illustration, the specific winding of the wire is not shown in fig. 2, but is schematically shown by a square with diagonal line shading. The winding manner of the wire according to the embodiment of the present disclosure is not particularly limited, and any suitable winding manner may be employed. Although not shown in the drawings, most of the wire 200 is wound in the annular groove 111 of the coil support 110, and both end portions of the wire 200 extend into the beam portion 120 from both ends of the beam portion 120 and are collected to the middle of the beam portion 120 in the extending direction of the beam portion 120, respectively. After being gathered to the middle of the beam portion 120, it may be led out through a hollow cylindrical portion to be described later to apply power to the lead wire 200 from the outside.

Embodiments according to the present disclosure are not limited to the specific form in which the wire 200 protrudes into the interior of the beam portion 120. For example, a groove or a hole for the wire 200 to pass through may be provided in the beam portion 120; alternatively, the lead wire 200 may be embedded or buried in the beam portion 120. It should be noted that, although the lead wires 200 are gathered at the end of the beam portion 120, contact between both ends of the lead wires 200 needs to be avoided. For example, a blocking structure may be provided inside the beam portion 120 to prevent both ends of the wire 200 from contacting.

As shown in fig. 2, the coil support 110 further includes a hollow cylindrical portion 130. One end of the hollow cylindrical portion 130 is connected to a side of the beam portion 120 remote from the cylindrical portion 110. As described above, the both end portions of the wire 200 are collected to the middle of the beam portion 120 and then drawn out through the hollow portion of the hollow cylindrical portion 130. The hollow portion is not specifically shown in the drawings for simplicity of illustration. It should be noted that, the lead wire 200 may be led out through the hollow portion of the hollow cylindrical portion 130, and directly extend out through the hollow portion of the hollow cylindrical portion 130, so as to be connected with an external power supply; the lead wire 200 may be connected to a terminal extending into the hollow columnar portion 130 via another power supply wire (e.g., an enamel wire). The electromagnetic coil structure according to the embodiment of the present disclosure is not particularly limited with respect to the specific lead-out form of the lead wire 200 in the hollow cylindrical portion 130.

In some examples, as shown in fig. 2, the dimension of the beam portion 120 in the extending direction is substantially the same as the maximum outer diameter of the cylindrical portion 110. As described above, the outer side of the cylindrical part 110 is provided with the annular groove 111, and thus, the outer diameter of the cylindrical part 110 is smaller at the portion of the annular groove 111, and the cylindrical part 110 has a larger outer diameter at the portion of the cylindrical part 110 other than the annular groove 111. The dimension of the beam portion 120 in the extending direction is substantially the same as the maximum outer diameter of the cylindrical portion 110, and it is possible to further enhance the strength of the beam portion 120 and the connection strength of the beam portion 120 and the cylindrical portion 110. In addition, the dimension of the beam portion 120 in the extending direction is substantially the same as the maximum outer diameter of the cylindrical portion 110, and it is possible to ensure easy mounting without leaving an additional gap when the electromagnetic coil structure is mounted to a housing of an adjustable damping device described later. For example, "substantially the same" herein means that the difference in dimensions is within the tolerance of the manufacturing process; or the difference in size of the two is within 5%, or 3%, or 1%.

As shown in fig. 2, the coil support 110 has an inner sidewall 112. A plurality of strip-shaped protrusions 113 extending in the axial direction are provided on the inner sidewall 112 of the cylindrical portion 110. For example, a plurality of strip-like protrusions 113 are provided at intervals in the circumferential direction of the cylindrical portion 110. Only one complete strip-like projection 113 is shown in fig. 2, and a part of another strip-like projection 113 is shown in the lower part in fig. 2. However, in the electromagnetic coil structure in the embodiment according to the present disclosure, 3 to 5 bar-shaped protrusions may be provided, but the embodiment according to the present disclosure is not limited to this. For example, a plurality of strip-like protrusions 113 are uniformly arranged in the circumferential direction on the inner side wall 112 of the cylindrical portion 110. The plurality of strip-shaped projections 113 can position, for example center, other components such as the solenoid valve housing provided therein.

In some examples, an end of the cylindrical portion 110 remote from the beam portion 120 is provided with a plurality of protrusions 114, and the plurality of protrusions 114 are provided at intervals in a circumferential direction of the cylindrical portion 110. For example, the plurality of protrusions 114 are evenly distributed in the circumferential direction of the cylindrical portion 110. The provision of the protrusions 114 at the bottom of the cylindrical part 110 can absorb dimensional errors due to the processing of the respective parts. For example, the protrusion 114 may have a certain elasticity and may be under different compression conditions depending on the dimensional tolerance when pressed against other components.

For example, the cylindrical portion 110, the beam portion 120, and the hollow cylindrical portion 130 of the coil support 110, and the bar-shaped protrusions 113 and the protrusions 114 provided on the cylindrical portion 110 may be integrally formed, that is, an integral structure. For example, it may be formed by an injection molding process. However, embodiments according to the present disclosure are not limited thereto, and the above-described at least partial structure may be separately manufactured and then assembled.

The electromagnetic coil structure according to the embodiment of the present disclosure may further include a coil holder. The coil holder may be assembled with the above-described coil support wound with the wire. Fig. 4 is a perspective view of a coil holder according to an embodiment of the present disclosure. FIG. 5 is a cross-sectional view of a coil holder according to an embodiment of the present disclosure; fig. 6 is a top view of a coil holder according to an embodiment of the disclosure. For example, the cross-sectional view of fig. 5 is a view taken along the line BB' of fig. 6. As shown in fig. 4, the coil holder includes a base plate 301 and first and second sub-portions 302 and 303 spaced apart from each other on the base plate 301. It should be noted that although the coil holder 301 is separately described herein as having three portions for ease of illustration: a bottom plate 301, a first sub-portion 302 and a second sub-portion 303, but these three portions may be of unitary construction. That is, the coil holder may be a unitary member. For example, the coil holder may be a metal member made of a metal material. For example, the coil holder may constitute at least a part of a magnetic field loop of a magnetic field formed by the electromagnetic coil.

For example, as shown in fig. 4, a positioning groove 305 is provided between the first and second sub-portions 302 and 303, and the positioning groove 305 is configured to receive the beam portion 120 described above and circumferentially position the coil support 110. When the coil holder and the coil are assembled, the beam portion 120 of the coil space 110 is inserted into the positioning groove 305 of the coil holder, and since the positioning groove 305 and the beam portion 120 are both elongated in the radial direction, they are prevented from rotating in the circumferential direction relative to each other after the assembly, thereby enabling axial positioning. For example, the width of the beam portion 120 and the width of the positioning groove 305 are matched with each other (e.g., substantially equal), and stability of positioning in the circumferential direction can be ensured.

As shown in fig. 4 to 6, the middle portion of the bottom plate 301 is provided with a through hole 306, and an orthographic projection of the through hole 306 on a first plane perpendicular to the axial direction falls within an orthographic projection of the positioning groove 305 on the first plane. As shown in fig. 6, the width 305 of the positioning groove is substantially the same as the diameter of the through hole 306. However, embodiments according to the present disclosure are not limited in that the diameter of the through-hole 306 may be smaller than the width of the positioning groove 305.

Referring to fig. 1 to 3 and 4 to 6, the through hole 306 of the bottom plate 301 of the coil holder 300 is configured to pass through the hollow cylindrical portion 130 and radially position the coil support 110. For example, the outer diameter dimension of the hollow cylindrical portion 130 and the inner diameter dimension of the through-hole 306 may be designed to match each other (e.g., be approximately equal) such that the coils are constrained from relative movement in a radial direction after being assembled on a coil holder.

Although the radial positioning is performed by the hollow cylindrical portion 130 passing through the through hole 306 and by the fitting before both in the above example, the embodiment according to the present disclosure is not limited thereto. For example, the radial positioning of the solenoid structure may not be performed by the fit between the hollow cylindrical portion 130 and the through hole 306, and the radial positioning may be performed by the contact between the solenoid structure and the inner side wall of the housing after the solenoid structure is mounted to the housing structure.

For example, as shown in fig. 4-6, the first subsection 302 of the coil holder 300 is provided with notches 304 on a face facing the second subsection 303 and a face facing away from the base plate 301. As shown in fig. 6, the shape of the orthographic projection of the notch 304 on the first plane is a figure surrounded by a minor arc 3041 and a line segment 3042 connecting both ends of the minor arc 3041. In addition, the first and second sub-portions 302, 303 are symmetrical with respect to a second plane (not shown in the figure) passing through the axial direction. Therefore, the above-mentioned notch 304 is also included in the second subpart 303, which is not described in detail here.

It should be noted that the first plane and the second plane are imaginary planes for convenience of description, and are not solid members.

Referring to fig. 6, a curvature radius of a minor arc 3041 of an orthographic projection of the notch on the first plane is substantially the same as a radius of the inner circle of the cylindrical portion 110. For example, after the coil support 110 is mounted on the coil holder 300, the notch 304 falls within the area where the inner circle of the coil support 110 is located. For example, the orthographic projection of the notch 304 on the first plane falls within the orthographic projection of the inner circle of the coil support 110 on the first plane.

In some examples, after the coil support 110 is mounted to the coil holder 300, the orthogonal minor arc 3041 of the notch is aligned with the inner sidewall 112 of the cylindrical portion 110 in the axial direction. Therefore, after the coil bobbin 110 is mounted on the coil holder 300, the space formed by the notch 304 and the space surrounded by the inner side wall of the cylindrical portion 110 of the coil support (the hollow portion of the cylindrical portion 110) can be smoothly connected.

In some examples, the outer diameter of the coil holder 300 is substantially the same as the outer diameter (maximum outer diameter) of the coil support 100. In this case, after the coil bobbin 110 is mounted on the coil holder 300, the outer side wall of the coil holder and the outer side wall of the coil support may be smoothly connected, and the assembly of the border coil holder and the coil support may be further mounted in other structures.

For example, the depth (dimension in the radial direction) of the annular groove 111 of the coil support 100 may be designed appropriately so as to be able to accommodate the coil structure formed by winding the wire 200. The outer side surface of the coil structure may be substantially aligned with the side surface of the maximum outer diameter portion of the cylindrical portion 110, thereby improving the compactness of the entire electromagnetic coil structure. Alternatively, in some examples, the outer circumference of the coil structure is further provided with an insulating protective layer, and an outer side surface of the insulating protective layer may be substantially aligned with a side surface of the maximum outer diameter portion of the cylinder part 110. However, embodiments according to the present disclosure are not limited thereto.

There is also provided, in accordance with some embodiments of the present disclosure, an adjustable damping device. The adjustable damping means may comprise an electromagnetic coil arrangement as described in any of the embodiments above. FIG. 7 illustrates a schematic cross-sectional view of an adjustable damping device according to some embodiments of the present disclosure. As shown in fig. 7, the adjustable damping means comprises 401, the housing 401 comprising a hollow cylindrical portion. An electromagnetic coil structure is disposed within the hollow cylindrical portion, the electromagnetic coil structure having an outer diameter substantially the same as an inner diameter of the hollow cylindrical portion. The coil holder 300 is sleeved on the coil support 100, the beam portion 120 of the coil support 100 is embedded into the positioning groove 305 of the coil holder 300, the hollow column portion 130 of the coil support 100 passes through the through hole 306 of the coil holder 300, the lead wire 200 is wound in the annular groove 111 of the coil support 100, and two ends of the lead wire respectively extend into the beam portion from two ends of the beam portion 120 and are led out from the hollow column portion 130. The electromagnetic coil structure including the above-described respective components fitted to each other is then integrally fitted into the hollow cylindrical portion of the housing.

As shown in fig. 7, the adjustable damping device according to some embodiments of the present disclosure further includes an electromagnetic damping valve body 402, at least a portion of the electromagnetic damping valve body 402 being disposed within the cylindrical portion 110 between the coils 100. The embodiment of the present disclosure is not limited to the specific structure of the electromagnetic damping valve body 402, and therefore, fig. 7 also schematically illustrates only a block structure. For example, the electromagnetic damping valve body 402 in the adjustable damping device according to the embodiments of the present disclosure may be any suitable damping valve body that is electromagnetically controlled.

For example, the electromagnetic damping valve body 402 includes a valve armature and a valve plate coupled to the valve armature. The valve armature is configured to be movable in the axial direction described above. At least a portion of the valve armature is disposed within the cylindrical portion and thus also within the coil formed by the wire 200 wound therearound. When a power source is applied to the lead wire 200, the coil forms a specific magnetic field, so that the armature of the valve is driven to move in the axial direction, the valve plate is driven to move, and the opening and closing state of the valve is controlled. Of course, the electromagnetic damping valve body may also include any other suitable components or features, which are not described in detail herein.

As shown in fig. 7, the adjustable damping device may further include a main valve body 403. The main valve body 403 is provided on a side of the electromagnetic damping valve body 402 away from the beam portion 120 of the coil yoke 110. For example, the main valve body is configured to be driven by the electromagnetic damping valve body 403. For example, the opening and closing of the electromagnetic damping valve body 403 is driven by applying power to a coil formed of a conductive wire, and the electromagnetic damping valve body 403 further drives the opening and closing of the main valve body by flowing a fluid medium. And the damping of the fluid formed by the whole adjustable damping device can be controlled by controlling the power supply applied to the coil. Similarly, the embodiment of the present disclosure does not limit the specific structure of the main valve body 403, and therefore, fig. 7 is also only schematically illustrated by a block structure, which is not described herein again.

In addition, in addition to the above components, the adjustable damping device according to the embodiment of the present disclosure may further include other components as required by the function. For example, as shown in fig. 7, a ring member 404 may be provided at an end of the coil support remote from the coil holder. For example, the plurality of protrusions 114 on the cylindrical portion 110 of the coil support described above abut against the ring 404. The ring 404 may be provided with a recess on its surface facing the coil support 100 to receive the protrusion. For example, the dimension of the recess in the axial direction is smaller than the dimension of the protrusion 114 in the axial direction. By providing the protrusion 114, when there is a machining error in each component of the adjustable damping device, the error can be absorbed by the protrusion 114. For example, protrusions 114 may be compressed to a greater degree when the component is machined larger, and protrusions 114 may be compressed to a lesser or non-compressed degree when the component is machined properly or smaller. In some examples, the adjustable damping device may include a ring-shaped bracket 406, for example, an outer sidewall of the ring-shaped bracket 406 and an inner sidewall of the housing 401 may be coupled to each other by a threaded structure. In some examples, the adjustable damping device may further be provided with a relief valve.

The adjustable damping device according to the embodiment of the present disclosure includes the electromagnetic coil structure of any one of the embodiments, and therefore, has various technical effects and advantages described in the embodiments, and will not be described herein again.

The following points need to be explained:

(1) In the drawings of the embodiments of the present disclosure, only the structures related to the embodiments of the present disclosure are referred to, and other structures may refer to general designs.

(2) Features of the same embodiment of the disclosure and of different embodiments may be combined with each other without conflict.

The above description is only an exemplary embodiment of the present invention, and is not intended to limit the scope of the present invention, which is defined by the appended claims.

Claims (20)

1. An electromagnetic coil structure, comprising:

a coil holder including a cylindrical portion and a beam portion connected to each other, an outer side of the cylindrical portion being provided with an annular groove extending in a circumferential direction of the cylindrical portion, the beam portion being connected to one end in an axial direction of the cylindrical portion and being connected to two portions of the cylindrical portion that are separated from each other in the circumferential direction, the beam portion extending along a chord of an inner circle of the cylindrical portion; and

and the conducting wire is wound in the groove of the cylindrical part to form a coil structure, and two end parts of the conducting wire respectively extend into the beam part from two ends of the beam part and are converged to the middle part of the beam part along the extending direction of the beam part.

2. The electromagnetic coil structure according to claim 1, wherein the coil holder further comprises a hollow columnar portion having one end connected to a side of the beam portion remote from the cylindrical portion, both end portions of the lead wire being configured to be led out via a hollow portion of the hollow columnar portion.

3. The electromagnetic coil structure according to claim 1, wherein the beam portion extends along a diameter of an inner circle of the cylindrical portion.

4. The electromagnetic coil structure according to claim 3, characterized in that a dimension in an extending direction of the beam portion is substantially the same as a maximum outer diameter of the cylindrical portion.

5. The electromagnetic coil structure according to claim 1, wherein an inner wall of the cylindrical portion is provided with a plurality of strip-like projections extending in the axial direction, the plurality of strip-like projections being provided at intervals in a circumferential direction of the cylindrical portion.

6. The electromagnetic coil structure according to claim 1, characterized in that an orthographic projection of the beam portion on a first plane perpendicular to the axial direction partially overlaps with an orthographic projection of the inner circle of the cylinder portion on the first plane, and a width of the orthographic projection of the beam portion on the first plane is 1/2 to 1/6 of a diameter of the inner circle of the cylinder portion.

7. The electromagnetic coil structure according to claim 1, characterized in that an end portion of the cylindrical portion that is remote from the beam portion is provided with a plurality of protrusions that are provided at intervals in the circumferential direction.

8. The electromagnetic coil structure as set forth in claim 2 further including a coil holder including a base plate and first and second spaced apart sub-portions on said base plate with a locating groove disposed therebetween configured to receive said beam portion and circumferentially locate said coil support.

9. The electromagnetic coil structure according to claim 8, characterized in that the bottom plate is provided at a middle portion thereof with a through hole, an orthographic projection of which on a first plane perpendicular to the axial direction falls within an orthographic projection of the positioning groove on the first plane.

10. The electromagnetic coil structure according to claim 8, wherein the through hole of the bottom plate is configured to pass through the hollow cylindrical portion and radially position the coil support.

11. The electromagnetic coil structure according to claim 9, characterized in that a face of said first subpart facing said second subpart and a face away from said base plate are provided with notches, and an orthogonal projection of said notches on said first plane has a shape of a figure surrounded by a minor arc and a line segment connecting both ends of the minor arc;

the first and second sub-portions are symmetrical with respect to a second plane parallel to the axial direction.

12. The electromagnetic coil structure according to claim 11, characterized in that a radius of curvature of the minor arc is substantially the same as a radius of an inner circle of the cylindrical portion.

13. The electromagnetic coil structure according to claim 11, characterized in that an orthographic projection of the notch on the first plane falls within an orthographic projection of an inner circle of the cylindrical portion on the first plane.

14. The electromagnetic coil structure according to claim 11, wherein the minor arc is aligned with an inner side wall of the cylindrical portion in the axial direction.

15. The electromagnetic coil structure of claim 8 wherein said base plate, said first sub-portion and said second sub-portion are of unitary construction.

16. The electromagnetic coil structure according to claim 2, characterized in that the cylindrical portion, the beam portion, and the hollow columnar portion are an integral structure.

17. The electromagnetic coil structure according to claim 8, characterized in that an outer diameter of the coil holder is substantially the same as a maximum outer diameter of the cylindrical portion.

18. An adjustable damping device, comprising: a housing and a solenoid structure as claimed in any one of claims 1 to 17 wherein the housing comprises a hollow cylindrical portion within which the solenoid structure is disposed, the outer diameter of the solenoid structure being substantially the same as the inner diameter of the hollow cylindrical portion.

19. The adjustable damping device according to claim 18, further comprising an electromagnetic damping valve body disposed at least partially within the cylindrical portion.

20. The adjustable damping device of claim 19, further comprising a main valve body disposed on a side of the electromagnetic damping valve body distal from the beam portion of the coil support, the main valve body configured to be actuated by the electromagnetic damping valve body.

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