Capacitive coupling assembly and filter

Abstract

The utility model relates to the field of communication, and provides a capacitive coupling assembly and a filter. The capacitive coupling assembly comprises a coupling piece and a mounting piece, and a mounting hole penetrates through the coupling piece; the mounting piece is an insulating piece, the mounting piece comprises a buckling part and a connecting part which are connected in sequence, the connecting part is in threaded connection with the filter shell, and the buckling part penetrates through the mounting hole and is buckled and matched with the mounting hole in an axial limiting manner. Based on the above structure, the capacitive coupling assembly can simplify and optimize the structure, can reduce the number of parts, can shorten a tolerance chain, can reduce accumulated tolerance, can simplify and optimize the assembly process, and can improve the installation reliability, the assembly convenience and the assembly efficiency. Moreover, the controllability and the stability of the height position of the coupling piece in the axial direction of the mounting piece can be improved, so that the consistency and the usability of the capacitive coupling assembly can be improved, the consistency, the quality and the yield of a filter applying the capacitive coupling assembly can be improved, and the reject ratio and the debugging cost of the filter applying the capacitive coupling assembly can be reduced.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of communication, and particularly relates to a capacitive coupling assembly and a filter. BACKGROUND

[0002] In some cases, the filter includes a filter housing, a plurality of resonant rods arranged in the filter housing, and a capacitive coupling assembly arranged between two resonant rods. The capacitive coupling assembly includes a coupling sheet and a mounting structure, the coupling sheet extends from one resonant rod to another resonant rod and enables capacitive coupling of the two resonant rods, the coupling sheet has a mounting hole corresponding to the mounting structure, the mounting structure includes a non-metallic screw and a non-metallic gasket, the non-metallic gasket is arranged between the coupling sheet and the filter housing, the non-metallic screw has a head and a pin, the head of the non-metallic screw is stopped at the hole opening of the mounting hole away from the non-metallic gasket, and the pin of the non-metallic screw is arranged in the mounting hole and the non-metallic gasket and is threadedly connected to the filter housing. Based on this, the coupling sheet can be fixed to the filter housing through the non-metallic screw and the non-metallic gasket, and the coupling sheet and the filter housing can be arranged in an insulating manner, so that the coupling sheet is not grounded, thereby enabling the coupling sheet to enable capacitive coupling of the two resonant rods.

[0003] However, the capacitive coupling assembly has a large number of parts, a long tolerance chain, a large cumulative tolerance, and poor installation reliability. CONTENT OF THE UTILITY MODEL

[0004] Embodiments of the present application provide a capacitive coupling assembly, aiming to solve the problems of a large number of parts, a long tolerance chain, a large cumulative tolerance, and poor installation reliability of the existing capacitive coupling assembly.

[0005] To achieve the above-mentioned purpose, the technical solutions adopted by the embodiments of the present application are as follows:

[0006] In a first aspect, a capacitive coupling assembly is provided, which is arranged in a filter housing, and includes:

[0007] A coupling member has a mounting hole;

[0008] A mounting member is an insulating member, which includes a buckle portion and a connecting portion connected in sequence, the connecting portion is threadedly connected to the filter housing, and the buckle portion is arranged in the mounting hole and is axially limitedly buckled and matched with the mounting hole.

[0009] In some embodiments, the mounting member includes a stop portion connected between the buckle portion and the connecting portion, the stop portion is stopped at one side hole of the mounting hole, an outer periphery of the buckle portion is provided with a buckle protrusion, and the buckle protrusion is buckled at the other side hole of the mounting hole.

[0010] In some embodiments, the buckle portion is provided with a cut-off groove, the cut-off groove extends in a direction perpendicular to the axial direction of the buckle portion, the cut-off groove is provided through along its extending direction, the cut-off groove has a groove depth direction parallel to the axial direction of the buckle portion, and the cut-off groove passes through the buckle protrusion along its groove depth direction.

[0011] In some embodiments, the cut-off groove is formed on the end face of the buckle portion close to the stop portion.

[0012] In some embodiments, the cut-off groove is provided with two cut-off grooves, and the two cut-off grooves are symmetrically distributed about the central axis of the buckle portion.

[0013] In some embodiments, the cut-off groove is formed on the end face of the buckle portion away from the stop portion.

[0014] In some embodiments, the cut-off groove is formed on the outer peripheral surface of the buckle portion, and the cut-off groove is closed on opposite sides along its groove depth direction.

[0015] In some embodiments, the outer peripheral surface of the buckle portion has a guide taper surface, the guide taper surface is located on the side of the buckle protrusion away from the stop portion, and the radial dimension of the guide taper surface is tapered in the direction away from the buckle protrusion.

[0016] In some embodiments, the connecting portion has an external thread, the filter housing is provided with a threaded hole, and the connecting portion is threadedly connected in the threaded hole of the filter housing.

[0017] In some embodiments, the mounting member includes a stop portion connected between the buckle portion and the connecting portion, and the stop portion is stopped in the hole direction of the threaded hole.

[0018] In some embodiments, the mounting member includes an operation portion.

[0019] In some embodiments, the operation portion is provided on the outer peripheral wall of the mounting member.

[0020] In some embodiments, the connecting portion is adhesively fixed to the filter housing.

[0021] In a second aspect, a filter is provided, including a filter housing and the capacitive coupling assembly provided in the embodiments of the application.

[0022] The capacitive coupling assembly provided in the application has the following beneficial effects:

[0023] The capacitive coupling assembly provided in this application embodiment can support and fix the coupling member through a mounting component, and set the coupling member to be ungrounded. The coupling member can also achieve capacitive coupling between two resonant rods. Specifically, the mounting component can be threadedly connected to the wall of the filter housing via a connecting part, thus fixing the mounting component to the filter housing. The mounting component can also be inserted into the mounting hole of the coupling member via a snap-fit ​​part, and axially limited by the mounting hole, to support and fix the coupling member, and stabilize the installation position and state of the coupling member relative to the mounting component and the filter housing. In particular, it stabilizes the axial height of the coupling member relative to the mounting component, and ensures a stable and reliable insulating distance between the coupling member and the wall of the filter housing. Based on this, the mounting component can support and fix the coupling member and set the coupling member to be ungrounded with a simplified and optimized structure. Compared to the existing capacitive coupling assembly's installation structure composed of multiple components, the mounting component, as an individual component, significantly reduces the number of parts. Therefore, the capacitive coupling assembly of this embodiment simplifies and optimizes the structure, reduces the number of parts, shortens the tolerance chain, reduces cumulative tolerance, simplifies and optimizes the assembly process, and improves installation reliability, assembly convenience, and assembly efficiency. Furthermore, it can improve the controllability and stability of the axial height position of the coupling component on the mounting component, thereby improving the consistency and usability of the capacitive coupling component, improving the consistency, quality and yield of the filter using the capacitive coupling component, and reducing the failure rate and debugging cost of the filter using the capacitive coupling component. Attached Figure Description

[0024] To clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments of this application or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 A three-dimensional schematic diagram of a filter provided in some embodiments of this application;

[0026] Figure 2 A cross-sectional view of a filter provided in some embodiments of this application, wherein a cutoff groove is formed on the end face of the latching portion near the stop portion;

[0027] Figure 3 for Figure 2 An exploded view of the provided capacitive coupling component;

[0028] Figure 4 for Figure 3 A 3D schematic diagram of the provided mounting components;

[0029] Figure 5A sectional view of the filter provided for another embodiment of the present application, wherein a truncated groove is formed on the end surface of the buckle portion away from the stop portion;

[0030] Figure 6 A sectional view of the filter provided for another embodiment of the present application, wherein a truncated groove is formed on the end surface of the buckle portion away from the stop portion; Figure 5 A sectional view of the filter provided for another embodiment of the present application, wherein a truncated groove is formed on the end surface of the buckle portion away from the stop portion;

[0031] Figure 7 A sectional view of the filter provided for another embodiment of the present application, wherein a truncated groove is formed on the end surface of the buckle portion away from the stop portion;

[0032] Figure 8 A sectional view of the filter provided for another embodiment of the present application, wherein a truncated groove is formed on the end surface of the buckle portion away from the stop portion; Figure 7 A sectional view of the filter provided for another embodiment of the present application, wherein a truncated groove is formed on the end surface of the buckle portion away from the stop portion.

[0033] In the drawings:

[0034] 10 - capacitive coupling assembly, 11 - coupling member, 111 - mounting hole; 12 - mounting member, 121 - buckle portion, 1211 - buckle protrusion, 1212 - truncated groove, 1213 - guide conical surface, 122 - stop portion, 1221 - stop platform, 123 - connecting portion, 124 - operation portion, x - extension direction of the truncated groove, y - axial direction of the buckle portion, L - central axis of the buckle portion; 20 - filter housing, 21 - first plate member, 211 - boss, 2111 - threaded hole, 22 - second plate member; 30 - resonant rod, 30a - first resonant rod, 30b - second resonant rod, 30c - third resonant rod. DETAILED DESCRIPTION

[0035] In order to make the technical problems, technical solutions and beneficial effects of the present application clear, the present application will be described in detail below in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not to limit the present application. If not specifically stated, all embodiments and optional embodiments of the present application can be combined to form new technical solutions. If not specifically stated, all technical features and optional technical features of the present application can be combined to form new technical solutions.

[0036] In the description of the present application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0037] In addition, the terms "first", "second", etc. are used only for descriptive purposes and are not to be construed as indicating or implying relative importance or an ordered ranking of the indicated technical features. Thus, features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly and specifically limited.

[0038] In the present application, unless otherwise explicitly and specifically defined, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0039] In the present application, "central axis" refers to a line passing through the geometric center line of the corresponding structure. "Axial direction" refers to the extension direction of the central axis of the corresponding structure, "radial direction" refers to any direction of the corresponding structure passing through the central axis and perpendicular to the central axis, and "circumferential direction" refers to the circumferential direction of the outer circumferential surface of the corresponding structure.

[0040] In some cases, the filter includes a filter housing, a plurality of resonant rods arranged in the filter housing, and a capacitive coupling assembly arranged between two resonant rods. The capacitive coupling assembly includes a coupling sheet and a mounting structure, the coupling sheet extends from one resonant rod to another resonant rod and enables capacitive coupling between the two resonant rods, the coupling sheet has a mounting hole corresponding to the mounting structure, the mounting structure includes a non-metallic screw and a non-metallic gasket, the non-metallic gasket is arranged between the coupling sheet and the filter housing, the non-metallic screw has a head and a pin, the head of the non-metallic screw is stopped at the hole opening of the mounting hole away from the non-metallic gasket, and the pin of the non-metallic screw is arranged in the mounting hole and the non-metallic gasket and is screwed to the filter housing. Based on this, the coupling sheet can be fixed to the filter housing through the non-metallic screw and the non-metallic gasket, and the coupling sheet and the filter housing can be insulated, so that the coupling sheet is not grounded, thereby enabling the two resonant rods to be capacitive coupled.

[0041] However, the number of parts of the capacitive coupling assembly is large, the tolerance chain (i.e. the cumulative tolerance chain of the machining and assembly errors of the non-metallic screw, the non-metallic gasket, the coupling sheet and the filter housing) is long, the cumulative tolerance is large, and the installation reliability is poor.

[0042] The embodiments provided in the present application will solve the above problems.

[0043] In order to illustrate the technical solutions provided in the present application, the following will be described in detail in combination with specific drawings and examples.

[0044] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 Some embodiments of the present application provide a capacitive coupling assembly 10 arranged in a filter housing 20. The capacitive coupling assembly 10 includes a coupling member 11 and a mounting member 12. The coupling member 11 has a mounting hole 111 therethrough. The mounting member 12 is an insulating member. The mounting member 12 includes a clamping portion 121 and a connecting portion 123 connected in sequence. The connecting portion 123 is threadedly connected to the filter housing 20. The clamping portion 121 is arranged through the mounting hole 111 and is axially limitedly clamped and matched with the mounting hole 111.

[0045] It should be noted that the capacitive coupling assembly 10 can be applied to a filter product. The filter includes a filter housing 20. The inside of the filter housing 20 has a closed inner cavity, which can achieve a shielding function to prevent signal leakage. One side of the filter housing 20 is a first plate member 21, and the plate member opposite to the first plate member 21 of the filter housing 20 is a second plate member 22. In actual application scenarios, the filter can be placed in a posture with the second plate member 22 facing up, or placed in a posture with the second plate member 22 facing left, right, front or back. In addition, the shape, size, material and the like of the filter housing 20 can be flexibly set as needed.

[0046] The filter further includes a plurality of resonant rods 30 arranged in the filter housing 20. The plurality of resonant rods 30 are arranged as needed and construct a required coupling relationship. One end of the resonant rod 30 is connected and fixed to a wall portion (such as the first plate member 21 or the second plate member 22, etc.) of the filter housing 20. The resonant rod 30 can be connected and fixed to the filter housing 20 in a manner such as but not limited to integral connection, welding, screw fastening, threaded connection, riveting, pressure connection, clamping, etc. The resonant rod 30 can be a metal resonant rod, a ceramic dielectric resonant rod, or a dielectric resonant rod of other materials. The resonant rod 30 can be a hollow resonant rod or a solid resonant rod. The resonant rod 30 can have a resonant disc or not. The resonant disc can have a flange or not. The resonant rod 30 can be a circular rod, a polygonal rod, a special-shaped rod, a sheet-shaped resonant rod, a sheet metal resonant rod, or a resonant rod of other shapes, etc.

[0047] The capacitive coupling assembly 10 can be arranged between any two resonant rods 30 to enable capacitive coupling between the two resonant rods 30.

[0048] In cases where the number of resonant rods 30 is at least three, the capacitive coupling component 10 can be disposed between two non-adjacent resonant rods 30 to achieve capacitive cross-coupling between the two resonant rods 30. Two non-adjacent resonant rods 30 mean that they are not adjacent on the main signal transmission path; that is, the coupling achieved by the capacitive coupling component 10 between these two resonant rods 30 is cross-coupling, meaning that the coupling relationship between these two resonant rods 30 is non-cascaded. For example, such as... Figure 2 , Figure 5 As shown, in a specific example of the filter, the filter housing 20 is provided with three resonant rods 30, namely a first resonant rod 30a, a second resonant rod 30b, and a third resonant rod 30c. The path through which the first resonant rod 30a, the second resonant rod 30b, and the third resonant rod 30c are coupled sequentially is the main signal transmission path. However, the first resonant rod 30a and the third resonant rod 30c are not adjacent on the main signal transmission path. The capacitive coupling component 10 can be set between the non-adjacent first resonant rod 30a and the third resonant rod 30c so that the first resonant rod 30a and the third resonant rod 30c can achieve capacitive cross-coupling.

[0049] Of course, the capacitive coupling component 10 can also be disposed between two adjacent resonant rods 30 to achieve capacitive coupling between the two resonant rods 30. Two adjacent resonant rods 30, meaning these two resonant rods 30 are adjacent on the main signal transmission path, are coupled via the capacitive coupling component 10 in a cascaded manner.

[0050] It should also be noted that the capacitive coupling assembly 10 includes a coupling element 11, which can be a metal component or a non-metallic component with a metal layer on its surface. At least one end of the coupling element 11 along its extension direction is not grounded; that is, one end of the coupling element 11 along its extension direction is not grounded while the other end is grounded, or both opposite ends of the coupling element 11 along its extension direction are not grounded. Grounding means that the end of the coupling element 11 is electrically connected to the filter housing 20; non-grounding means that the end of the coupling element 11 is insulated from the filter housing 20 (i.e., not electrically connected). The coupling element 11 can extend from one resonant rod 30 to another resonant rod 30, so that the two resonant rods 30 can achieve capacitive coupling via the coupling element 11. The coupling element 11 can be, but is not limited to, a sheet-like or rod-like shape, etc.

[0051] The capacitive coupling assembly 10 further comprises at least one mounting member 12, which is an insulating member, i.e., the mounting member 12 is made of an insulating material and has insulating properties, and is exemplarily a non-metallic member. The at least one mounting member 12 is arranged at an end of the coupling member 11 to support and fix the end of the coupling member 11 and to allow the end of the coupling member 11 to be arranged without being grounded. On this basis, it is allowed that a part of the mounting member 12 is arranged at a non-end region (e.g., a middle region) of the coupling member 11 to support and fix the corresponding region of the coupling member 11. Correspondingly, the coupling member 11 is provided with mounting holes 111 arranged one-to-one with the mounting members 12, which are through holes and are arranged through the coupling member 11. The mounting holes 111 can be circular holes, rectangular holes, etc. as needed, and the size of the mounting holes 111 can be set as needed.

[0052] The mounting member 12 is an individual component rather than an assembly formed by assembling a plurality of components. The mounting member 12 comprises a clamping portion 121 and a connecting portion 123, which are arranged one after another along the axial direction of the mounting member 12 and are integrally connected, and the axial direction of the mounting member 12 is the extension direction of the central axis of the mounting member 12. The connecting portion 123 is threadedly connected with a wall portion (e.g., the first plate member 21 or the second plate member 22, etc.) of the filter housing 20 to allow the mounting member 12 to be connected and fixed to the filter housing 20. As shown in Figure 2 , Figure 5 In some embodiments, the connecting portion 123 has external threads, the wall portion of the filter housing 20 is provided with a threaded hole 2111 having internal threads, and the connecting portion 123 is threadedly connected in the threaded hole 2111 of the filter housing 20 to achieve the threadedly connected cooperation between the connecting portion 123 and the filter housing 20. In other embodiments, the connecting portion 123 is provided with a threaded hole 2111 having internal threads, and the wall portion of the filter housing 20 is provided with a threaded column having external threads, and the threaded column of the filter housing 20 is threadedly connected in the threaded hole 2111 of the connecting portion 123 to achieve the threadedly connected cooperation between the connecting portion 123 and the filter housing 20.

[0053] The buckle portion 121 can be located at or near the end of the mounting member 12 in the axial direction of the mounting member 12. The buckle portion 121 is inserted into the mounting hole 111 of the coupling member 11 and is buckled and axially limited with the mounting hole 111, so that the coupling member 11 is axially limited relative to the mounting member 12, and the coupling member 11 is spaced from the wall portion (for example, the first plate member 21 or the second plate member 22, etc.) of the filter housing 20. Based on this, the movement of the coupling member 11 along the axial direction of the mounting member 12 can be limited, and the installation position and state of the coupling member 11 relative to the mounting member 12 and the filter housing 20 can be stabilized, especially the height position of the coupling member 11 in the axial direction of the mounting member 12 can be stabilized, which especially facilitates the stable and reliable insulation and spacing of the coupling member 11 and the wall portion of the filter housing 20.

[0054] In summary, the capacitive coupling assembly 10 provided by the embodiment of the present application can support and fix the coupling member 11 through the mounting member 12 and make the coupling member 11 not grounded, and can realize the capacitive coupling of the two resonant rods 30 through the coupling member 11. The mounting member 12 can be threadedly connected with the wall portion of the filter housing 20 through the connecting portion 123 to be connected and fixed to the filter housing 20, and the mounting member 12 can be inserted into the mounting hole 111 of the coupling member 11 through the buckle portion 121 and buckled and axially limited with the mounting hole 111 to support and fix the coupling member 11 and stabilize the installation position and state of the coupling member 11 relative to the mounting member 12 and the filter housing 20, especially the height position of the coupling member 11 in the axial direction of the mounting member 12 can be stabilized, which especially facilitates the stable and reliable insulation and spacing of the coupling member 11 and the wall portion of the filter housing 20. Based on this, the mounting member 12 can support and fix the coupling member 11 and make the coupling member 11 not grounded in a simplified and optimized structure, and compared with the mounting structure composed of multiple components of the existing capacitive coupling assembly, the mounting member 12 as an individual component can obviously reduce the number of components. Therefore, the capacitive coupling assembly 10 of the embodiment can simplify and optimize the structure, reduce the number of components, shorten the tolerance chain, reduce the cumulative tolerance, simplify and optimize the assembly process, and improve the installation reliability, assembly convenience and assembly efficiency. Moreover, the controllability and stability of the height position of the coupling member 11 in the axial direction of the mounting member 12 can be improved, thereby the consistency and usability of the capacitive coupling assembly 10 can be improved, the consistency, quality and yield of the filter using the capacitive coupling assembly 10 can be improved, and the failure rate and debugging cost of the filter using the capacitive coupling assembly 10 can be reduced.

[0055] Please refer to Figure 2 , Figure 3 , Figure 4In some embodiments of the present application, the mounting member 12 comprises a stop portion 122 connected between the clamping portion 121 and the connecting portion 123, the stop portion 122 is stopped at one side of the mounting hole 111, and the outer periphery of the clamping portion 121 is provided with a clamping protrusion 1211 which is buckled at the other side of the mounting hole 111.

[0056] It should be noted that the mounting member 12 further comprises the stop portion 122, and the clamping portion 121, the stop portion 122 and the connecting portion 123 are sequentially arranged along the axial direction of the mounting member 12 and are integrally connected. The shape of the stop portion 122 can be set as needed, for example, it can be prismatic, cylindrical, prismatic, circular, stepped, etc. For example, as shown in Figure 3 、 Figure 4 In some embodiments, the stop portion 122 comprises a plurality of stop steps 1221 arranged sequentially along the axial direction of the mounting member 12, so that the stop portion 122 is stepped or stepped. For example, as shown in Figure 6 、 Figure 7 In another embodiment, the stop portion 122 is prismatic.

[0057] The outer periphery of the clamping portion 121 is provided with a clamping protrusion 1211 which is outwardly protruding relative to the outer wall of the clamping portion 121, and the clamping protrusion 1211 and the stop portion 122 are arranged spaced apart along the axial direction of the mounting member 12. The clamping portion 121 is arranged through the mounting hole 111 until the clamping protrusion 1211 is buckled at one side of the mounting hole 111. The stop portion 122 is stopped at the other side of the mounting hole 111. That is, the clamping protrusion 1211 and the stop portion 122 are stopped at opposite sides of the mounting hole 111. Based on this, the mounting member 12 can be buckled and matched with the mounting hole 111 through the clamping protrusion 1211 of the clamping portion 121, and the coupling member 11 is axially limited between the clamping protrusion 1211 and the stop portion 122 to stabilize the installation position and state of the coupling member 11, especially the height position of the coupling member 11 in the axial direction of the mounting member 12.

[0058] By adopting the above scheme, the mounting member 12 can be buckled and matched with the mounting hole 111 through the clamping protrusion 1211 of the clamping portion 121, and the coupling member 11 is axially limited between the clamping protrusion 1211 and the stop portion 122 to stabilize the installation position and state of the coupling member 11, especially the height position of the coupling member 11 in the axial direction of the mounting member 12. Based on this, the mounting member 12 can support and fix the coupling member 11 with a simplified and optimized structure, and can improve the controllability and stability of the height position of the coupling member 11 in the axial direction of the mounting member 12, thereby optimizing the structure of the capacitive coupling assembly 10 and improving the assembly convenience, structural reliability, consistency and usability of the capacitive coupling assembly 10.

[0059] Of course, in other embodiments, the outer periphery of the clamping portion 121 can be provided with two clamping protrusions 1211 which are spaced apart along the axial direction of the mounting member 12, the clamping portion 121 is arranged through the mounting hole 111, and the two clamping protrusions 1211 are respectively clamped in the two side holes of the mounting hole 111, so as to axially limit the coupling member 11 between the two clamping protrusions 1211, and stabilize the mounting position and the mounting state of the coupling member 11, especially the height position of the coupling member 11 in the axial direction of the mounting member 12.

[0060] Please refer to Figure 2 、 Figure 3 、 Figure 4 In some embodiments of the present application, the clamping portion 121 is provided with a cut-off groove 1212, the extension direction x of the cut-off groove 1212 is perpendicular to the axial direction y of the clamping portion 121, the cut-off groove 1212 is arranged through along its extension direction, the groove depth direction of the cut-off groove 1212 is parallel to the axial direction y of the clamping portion 121, and the cut-off groove 1212 passes through the clamping protrusion 1211 along its groove depth direction.

[0061] It should be noted that the clamping portion 121 is provided with at least one cut-off groove 1212. The extension direction x of the cut-off groove 1212 is perpendicular to the axial direction y of the clamping portion 121, for example, the extension direction x of the cut-off groove 1212 can coincide with any radial direction of the clamping portion 121 (i.e. the extension direction x of the cut-off groove 1212 can pass through the central axis L of the clamping portion 121 and be perpendicular to the central axis L of the clamping portion 121), or for example, the extension direction x of the cut-off groove 1212 can be parallel to but not coincide with any radial direction of the clamping portion 121 (i.e. the extension direction x of the cut-off groove 1212 does not pass through the central axis L of the clamping portion 121 but is perpendicular to the central axis L of the clamping portion 121). The groove depth direction of the cut-off groove 1212 is perpendicular to the extension direction x of the cut-off groove 1212 and parallel to the axial direction y of the clamping portion 121.

[0062] The cutting groove 1212 is provided through along the extension direction x of the cutting groove 1212, and the cutting groove 1212 passes through the buckle protrusion 1211 along the groove depth direction of the cutting groove 1212, so that the cutting groove 1212 can cut the complete continuity of the buckle portion 121, especially the buckle protrusion 1211 in the circumferential direction, can provide a deformation space for the buckle portion 121, especially the buckle protrusion 1211, can reduce the deformation resistance of the buckle portion 121, especially the buckle protrusion 1211, and can optimize the elastic deformation capability of the buckle portion 121, especially the buckle protrusion 1211. Based on this, in the assembly process of the buckle portion 121 penetrating the mounting hole 111, the buckle portion 121, especially the buckle protrusion 1211, can adaptively produce elastic contraction deformation, so as to facilitate the buckle portion 121 to quickly and smoothly penetrate the mounting hole 111, especially the buckle protrusion 1211 to quickly and smoothly penetrate from one side of the mounting hole 111 to the other side of the mounting hole 111; after the buckle protrusion 1211 penetrates the mounting hole 111, the buckle portion 121, especially the buckle protrusion 1211, can quickly and automatically restore the elastic deformation, so as to facilitate the buckle protrusion 1211 to be buckled to the hole edge of the mounting hole 111 away from the stop portion 122.

[0063] By adopting the above scheme, the complete continuity of the buckle portion 121, especially the buckle protrusion 1211 in the circumferential direction, can be cut through the cutting groove 1212, and a deformation space can be provided for the buckle portion 121, especially the buckle protrusion 1211, so as to reduce the deformation resistance of the buckle portion 121, especially the buckle protrusion 1211, and optimize the elastic deformation capability of the buckle portion 121, especially the buckle protrusion 1211. Based on this, in the assembly process of the buckle portion 121 penetrating the mounting hole 111, the buckle portion 121, especially the buckle protrusion 1211, can adaptively produce elastic contraction deformation when passing through the mounting hole 111, so that the buckle portion 121 can be quickly and smoothly penetrated into the mounting hole 111, and the buckle protrusion 1211 can be quickly and smoothly penetrated from one side of the mounting hole 111 to the other side of the mounting hole 111, thereby improving the assembly convenience and efficiency between the mounting piece 12 and the coupling piece 11. After the buckle protrusion 1211 penetrates the mounting hole 111, the buckle portion 121, especially the buckle protrusion 1211, can quickly and automatically restore the elastic deformation, so as to facilitate the buckle protrusion 1211 to be buckled to the hole edge of the mounting hole 111 away from the stop portion 122, and maintain and improve the assembly reliability and connection reliability between the mounting piece 12 and the coupling piece 11.

[0064] Please refer to Figure 2 , Figure 3 , Figure 4 In some embodiments of the present application, the cutting groove 1212 is provided on the end face of the buckle portion 121 close to the stop portion 122.

[0065] It should be noted that the cut-off groove 1212 is arranged on the end face of the buckle portion 121 close to the stop portion 122, that is, along the groove depth direction of the cut-off groove 1212, the groove opening of the cut-off groove 1212 is arranged on the end face of the buckle portion 121 close to the stop portion 122, and the groove bottom of the cut-off groove 1212 is closed.

[0066] By adopting the above scheme, by arranging the cut-off groove 1212 on the end face of the buckle portion 121 close to the stop portion 122, the groove opening of the cut-off groove 1212 is arranged on the end face of the buckle portion 121 close to the stop portion 122, and is not communicated to the end face of the buckle portion 121 away from the stop portion 122, so that the cut-off groove 1212 can form a limited cut in the axial direction y of the buckle portion 121. Based on this, on the one hand, the cut-off groove 1212 can provide sufficient space for the deformation of the buckle portion 121, especially the buckle protrusion 1211, so that the buckle portion 121, especially the buckle protrusion 1211, can flexibly adapt to the elastic shrinkage deformation caused by the extrusion of the hole wall of the mounting hole 111, so that the buckle protrusion 1211 can smoothly pass through the mounting hole 111, and then quickly recover the original shape to be tightly buckled on the hole wall of the mounting hole 111, thereby improving the connection convenience, connection reliability between the mounting piece 12 and the coupling piece 11. On the other hand, since the cut-off groove 1212 is not communicated to the end face of the buckle portion 121 away from the stop portion 122, it is beneficial to maintain the structural strength of the region of the buckle portion 121 away from the stop portion 122, thereby improving the structural reliability, use reliability and service life of the mounting piece 12 and the capacitive coupling assembly 10.

[0067] Please refer to Figure 2 、 Figure 3 、 Figure 4 In some embodiments of the present application, two cut-off grooves 1212 are arranged, and the two cut-off grooves 1212 are symmetrically distributed about the central axis L of the buckle portion 121.

[0068] It should be noted that, on the basis of the last embodiment, that is, on the basis of the cut-off groove 1212 being arranged on the end face of the buckle portion 121 close to the stop portion 122, two cut-off grooves 1212 are arranged, and the two cut-off grooves 1212 are arranged in parallel and spaced apart, and are arranged on opposite sides of the central axis L of the buckle portion 121, and are symmetrically distributed about the central axis L of the buckle portion 121.

[0069] By adopting the above scheme, the buckle portion 121 can be uniformly deformed when subjected to external force through the two symmetrically distributed truncated grooves 1212, thereby helping the buckle portion 121, especially the buckle protrusion 1211, to smoothly pass through the mounting hole 111, reducing assembly difficulties and damage caused by uneven deformation, and improving the connection convenience, connection efficiency and connection reliability between the mounting piece 12 and the coupling piece 11. Moreover, the buckle portion 121 can uniformly disperse stress when subjected to force through the two symmetrically distributed truncated grooves 1212, thereby improving the carrying capacity, use reliability and service life of the buckle portion 121.

[0070] Of course, in other embodiments, the number and position of the truncated grooves 1212 can be flexibly set, for example, the truncated grooves 1212 can be provided only one, and for example, the truncated grooves 1212 can be provided two but the two truncated grooves 1212 are asymmetrically distributed, and the like.

[0071] Please refer to Figure 5 , Figure 6 In some embodiments of the present application, the truncated groove 1212 is provided on the end face of the buckle portion 121 away from the stop portion 122.

[0072] It should be noted that the truncated groove 1212 is provided on the end face of the buckle portion 121 away from the stop portion 122, that is, in the groove depth direction of the truncated groove 1212, the groove opening of the truncated groove 1212 is provided on the end face of the buckle portion 121 away from the stop portion 122, and the groove bottom of the truncated groove 1212 is closed.

[0073] By adopting the above scheme, by opening the cut-off groove 1212 on the end face of the buckle portion 121 away from the stop portion 122, the slot of the cut-off groove 1212 can be arranged on the end face of the buckle portion 121 away from the stop portion 122, and not communicated to the end face of the buckle portion 121 close to the stop portion 122. Based on this, on the one hand, in the assembly process of the buckle portion 121 penetrating into the mounting hole 111, the end of the buckle portion 121 away from the stop portion 122 and the buckle protrusion 1211 can quickly, flexibly and easily adapt to the extrusion of the hole wall of the mounting hole 111 to perform necessary elastic shrinkage deformation when entering the mounting hole 111, so that the buckle protrusion 1211 can smoothly pass through the mounting hole 111, and then quickly recover the original shape to be tightly buckled on the hole edge of the mounting hole 111, thereby improving the connection convenience and reliability between the mounting piece 12 and the coupling piece 11. On the one hand, since the cut-off groove 1212 is not communicated to the end face of the buckle portion 121 close to the stop portion 122, it is beneficial to maintain the structural strength of the area of the buckle portion 121 close to the stop portion 122, thereby improving the structural reliability, use reliability and service life of the mounting piece 12 and the capacitive coupling assembly 10. On the one hand, since the slot of the cut-off groove 1212 is arranged on the end face of the buckle portion 121 away from the stop portion 122, the cut-off groove 1212 can be conveniently machined from the side of the buckle portion 121 away from the stop portion 122, thereby improving the machining convenience and efficiency of the cut-off groove 1212. Moreover, in the case that the cut-off groove 1212 is arranged on the end face of the buckle portion 121 away from the stop portion 122, the cut-off groove 1212 can be used as the operation portion 124 (i.e., the cut-off groove 1212 and the operation portion 124 are combined into one, and the mounting piece 12 can not need to additionally increase the operation portion 124), based on this, the structure of the mounting piece 12 can be simplified and optimized, and the mounting piece 12 can be conveniently screwed to the filter shell 20 through the cut-off groove 1212, thereby improving the mounting convenience and efficiency of the mounting piece 12.

[0074] Please refer to Figure 7 , Figure 8 , please refer to Figure 6 In some embodiments of the present application, the cut-off groove 1212 is arranged on the outer circumferential surface of the buckle portion 121, and the opposite sides of the cut-off groove 1212 in the groove depth direction are closed.

[0075] It should be noted that the cut-off groove 1212 is arranged on the outer circumferential surface of the buckle portion 121. Along the groove depth direction of the cut-off groove 1212, the opposite sides of the cut-off groove 1212 are closed, that is, the cut-off groove 1212 is neither communicated to the end face of the buckle portion 121 away from the stop portion 122 nor communicated to the end face of the buckle portion 121 close to the stop portion 122. In this case, the cut-off groove 1212 is similar to a through hole structure. For example, the cross-sectional shape of the cut-off groove 1212 perpendicular to the extension direction thereof can be a waist type (as shown in Figure 8 ​

[0076] By adopting the above scheme, the cut-off groove 1212 is arranged on the outer circumferential surface of the buckle portion 121, and the cut-off groove 1212 is neither communicated to the end surface of the buckle portion 121 away from the stop portion 122 nor communicated to the end surface of the buckle portion 121 close to the stop portion 122. Based on this, on the one hand, although the cut-off groove 1212 is closed on both sides in the groove depth direction, the cut-off groove 1212 can still provide the buckle portion 121 and the buckle protrusion 1211 thereof with the necessary deformation space, so as to facilitate the buckle portion 121 and the buckle protrusion 1211 thereof to flexibly adapt to the extrusion of the hole wall of the mounting hole 111 to perform necessary elastic shrinkage deformation, and also facilitate the buckle protrusion 1211 to smoothly pass through the mounting hole 111 and then quickly recover the original shape to be tightly buckled on the hole edge of the mounting hole 111, thereby improving the connection convenience and reliability between the mounting piece 12 and the coupling piece 11. On the one hand, since the cut-off groove 1212 neither destroys the end surface of the buckle portion 121 away from the stop portion 122 nor destroys the end surface of the buckle portion 121 close to the stop portion 122, it is helpful to maintain the overall structural strength of the buckle portion 121, thereby improving the structural reliability, use reliability and service life of the mounting piece 12 and the capacitive coupling assembly 10. On the one hand, since the cut-off groove 1212 is similar to a through-hole structure, it is helpful to process and form the cut-off groove 1212 along the extension direction x of the cut-off groove 1212, thereby improving the processing convenience and efficiency of the cut-off groove 1212.

[0077] Please refer to Figure 2 , Figure 3 , Figure 4 In some embodiments of the present application, the outer circumferential surface of the buckle portion 121 has a guide taper surface 1213, which is located on the side of the buckle protrusion 1211 away from the stop portion 122, and the radial dimension of the guide taper surface 1213 is taperedly arranged in the direction away from the buckle protrusion 1211.

[0078] It should be noted that at least part of the outer circumferential surface of the buckle portion 121 is the guide taper surface 1213. The guide taper surface 1213 is located on the side of the buckle protrusion 1211 away from the stop portion 122, based on which, in the assembly process of the buckle portion 121 penetrating into the mounting hole 111, the guide taper surface 1213 will enter the mounting hole 111 earlier than the buckle protrusion 1211; and since the radial dimension of the guide taper surface 1213 is taperedly arranged in the direction away from the buckle protrusion 1211, the end of the guide taper surface 1213 with smaller radial dimension will enter the mounting hole 111 earlier than the end of the guide taper surface 1213 with larger radial dimension, thereby achieving the effect of gradually guiding the buckle portion 121 to enter the mounting hole 111.

[0079] Through the above scheme, in the assembly process of the buckle part 121 penetrating into the mounting hole 111, the guide cone surface 1213 with the radial dimension gradually reducing in the direction away from the buckle protrusion 1211 can be used as a guide surface to guide the buckle part 121 to pass through the mounting hole 111 smoothly and smoothly away from the one end of the stop part 122 and the buckle protrusion 1211, thereby improving the assembly convenience and efficiency between the mounting piece 12 and the coupling piece 11.

[0080] Please refer to Figure 2 、 Figure 3 、 Figure 4 In some embodiments of the present application, the connecting part 123 has external threads, and the filter shell 20 is provided with a threaded hole 2111, and the connecting part 123 is screwed into the threaded hole 2111 of the filter shell 20.

[0081] It should be noted that the connecting part 123 has external threads, and the wall part of the filter shell 20 is provided with a threaded hole 2111, which has internal threads, and the connecting part 123 is screwed into the threaded hole 2111 of the filter shell 20 to realize the threaded connection between the connecting part 123 and the filter shell 20. As shown in Figure 2 In some embodiments, the wall part (e.g. the first plate 21) of the filter shell 20 is provided with a boss 211, and the end surface of the boss 211 is provided with a threaded hole 2111, and the connecting part 123 is screwed into the threaded hole 2111 of the boss 211. In this way, the connecting length, connecting area and connecting strength between the connecting part 123 and the filter shell 20 are increased.

[0082] Through the above scheme, by making the connecting part 123 have external threads and being screwed into the threaded hole 2111 of the filter shell 20, the assembly between the connecting part 123 and the filter shell 20 is intuitive and simple, thereby improving the assembly convenience, efficiency and connection reliability between the mounting piece 12 and the filter shell 20. Compared with the scheme of "the connecting part 123 is provided with a threaded hole 2111, the filter shell 20 is provided with a threaded column, and the threaded column is screwed into the threaded hole 2111", the structural strength of the connecting part 123 and the mounting piece 12 of the present embodiment is better, which is conducive to improving the structural reliability and connection reliability of the mounting piece 12; the design of the filter shell 20 is also simplified, which is conducive to improving the processing convenience of the filter shell 20 and reducing the processing cost of the filter shell 20.

[0083] Of course, in other embodiments, the connecting part 123 is provided with a threaded hole 2111, which has internal threads, and the wall part of the filter shell 20 is provided with a threaded column, which has external threads, and the threaded column of the filter shell 20 is screwed into the threaded hole 2111 of the connecting part 123 to realize the threaded connection between the connecting part 123 and the filter shell 20.

[0084] Please refer to Figure 2 、 Figure 3 、 Figure 5 、 Figure 6 In some embodiments of the present application, the mounting member 12 comprises a stop portion 122 connected between the buckle portion 121 and the connecting portion 123, and the stop portion 122 stops at the hole edge of the threaded hole 2111.

[0085] It should be noted that, in the case where the mounting member 12 comprises the stop portion 122, the stop portion 122 can stop at both the hole edge of the mounting hole 111 close to the stop portion 122 and the hole edge of the threaded hole 2111. For example, as shown in FIG. 2B, the stop portion 122 can stop at the hole edge of the mounting hole 111 close to the stop portion 122 via the stop step 1221 closest to the mounting hole 111, and the stop portion 122 can stop at the hole edge of the threaded hole 2111 via the stop step 1221 closest to the threaded hole 2111. Figure 2 、 Figure 3 As shown in FIG. 2C, in some embodiments, the stop portion 122 comprises a plurality of stop steps 1221 arranged in sequence along the axial direction of the mounting member 12, so that the stop portion 122 is in a stepped shape, and in this case, the stop portion 122 can stop at the hole edge of the mounting hole 111 close to the stop portion 122 via the stop step 1221 closest to the mounting hole 111, and the stop portion 122 can stop at the hole edge of the threaded hole 2111 via the stop step 1221 closest to the threaded hole 2111. Figure 5 、 Figure 6 As shown in FIG. 2D, in other embodiments, the stop portion 122 is in a columnar shape, such as a prismatic or cylindrical shape, and in this case, the two end faces of the stop portion 122 stop at the hole edge of the mounting hole 111 close to the stop portion 122 and the hole edge of the threaded hole 2111, respectively.

[0086] By using the above scheme, in the case where the mounting member 12 comprises the stop portion 122 and the connecting portion 123 is threadedly connected to the threaded hole 2111 of the filter housing 20, by making the stop portion 122 stop at the hole edge of the threaded hole 2111, the threaded hole 2111 of the filter housing 20 can not only limit the circumferential position of the mounting member 12, but also position the mounting member 12 axially, so that the installation position and state of the mounting member 12 on the filter housing 20 can be accurately controlled and reliably stabilized, and the controllability, stability and accuracy of the “height position of the mounting member 12 relative to the filter housing 20” and the “height position of the coupling member 11 relative to the filter housing 20” can be improved, thereby improving the consistency and usability of the capacitive coupling assembly 10, improving the consistency, quality and yield of the filter using the capacitive coupling assembly 10, and reducing the failure rate and debugging cost of the filter using the capacitive coupling assembly 10. Furthermore, the close contact of the stop portion 122 with the hole edge of the threaded hole 2111 can form an additional support point, thereby enhancing the connection strength and reliability between the mounting member 12 and the filter housing 20, and reducing the loosening of the mounting member 12, thereby improving the use reliability of the capacitive coupling assembly 10.

[0087] Of course, in other embodiments, the stop portion 122 can be spaced apart from the hole along of the threaded hole 2111, and the mounting member 12 can be axially positioned relative to the threaded hole 2111 via other manners (e.g., the connecting portion 123 can be abutted against the hole bottom of the threaded hole 2111, etc.).

[0088] Please refer to Figure 2 , Figure 3 , Figure 4 In some embodiments of the present application, the mounting member 12 comprises an operation portion 124. The operation portion 124 can be, but is not limited to, a hole, a groove, a protrusion, etc.

[0089] By using the above scheme, a hand or an external tool can be facilitated to drive the mounting member 12 to be threadedly connected to the filter housing 20 via the operation portion 124, so that the installation convenience and efficiency of the mounting member 12 can be improved.

[0090] Of course, in other embodiments, the mounting member 12 can also not have the operation portion 124, and an operator can apply force to the mounting member 12 by using a suction cup, a friction force of a hand, a tool with a large friction force (e.g., a tool with a rough rubber part at the end thereof), a tool with adhesion (e.g., a tool with an adhesive at the end thereof), etc., to realize driving the mounting member 12 to be threadedly connected to the filter housing 20.

[0091] Please refer to Figure 2 , Figure 3 , Figure 4 In some embodiments of the present application, the operation portion 124 is arranged on the outer peripheral wall of the mounting member 12.

[0092] It should be noted that the operation portion 124 can be arranged on the outer peripheral wall of the mounting member 12. For example, as shown in Figure 3 , Figure 4 In some embodiments, the operation portion 124 can be arranged on the outer peripheral wall of the stop portion 122.

[0093] The outer peripheral wall of the mounting member 12 can be provided with a protrusion, a groove, etc., as the operation portion 124. For example, as shown in Figure 3 , Figure 4 In some embodiments, the outer peripheral wall of the stop portion 122 can be provided with an external hexagonal structure as the operation portion 124.

[0094] By adopting the above scheme, by arranging the operation part 124 on the outer peripheral wall of the mounting piece 12, the human hand or external tool can be conveniently contacted with the operation part 124, and the mounting piece 12 can be conveniently and quickly driven to be screwed to the filter shell 20 through the operation part 124, and the slipping during the operation process can be reduced, so that the installation convenience and installation efficiency of the mounting piece 12 can be improved. Moreover, the operation part 124 is directly formed on the outer peripheral wall of the mounting piece 12, and the design convenience and processing convenience of the operation part 124 can be improved, the structure of the mounting piece 12 can be simplified and optimized, and the processing convenience and structural reliability of the mounting piece 12 can be improved.

[0095] Of course, in other embodiments, the operation part 124 can be arranged at the end side of the mounting piece 12 away from the connecting part 123. For example, in the case that the truncated groove 1212 is arranged on the end face of the buckle part 121 away from the stop part 122, the truncated groove 1212 can be taken as the operation part 124, and the like.

[0096] Please refer to Figure 2 、 Figure 3 、 Figure 4 In some embodiments of the present application, the connecting part 123 is adhesively fixed with the filter shell 20.

[0097] It should be noted that, on the basis of the threaded connection of the connecting part 123 with the wall part of the filter shell 20, the connecting part 123 is also adhesively fixed with the wall part of the filter shell 20. Among them, as shown in Figure 2 some embodiments, the connecting part 123 has external threads, the wall part of the filter shell 20 is provided with a threaded hole 2111, the connecting part 123 is screwed into the threaded hole 2111 of the filter shell 20, and the connecting part 123 is adhesively fixed with the filter shell 20 by glueing in the threaded hole 2111. In other embodiments, the connecting part 123 is provided with a threaded hole 2111, the wall part of the filter shell 20 is provided with a threaded column, the threaded column of the filter shell 20 is screwed into the threaded hole 2111 of the connecting part 123, and the connecting part 123 is adhesively fixed with the filter shell 20 by glueing in the threaded hole 2111.

[0098] By adopting the above scheme, on the basis of the threaded connection of the connecting part 123 with the wall part of the filter shell 20, the connecting part 123 is also adhesively fixed with the wall part of the filter shell 20, based on which, the threaded connection and adhesion can be comprehensively used to twice fasten the connecting part 123 with the filter shell 20, so that the connection strength, connection reliability and connection stability between the connecting part 123 and the filter shell 20 (i.e. between the mounting piece 12 and the filter shell 20) can be comprehensively improved.

[0099] Of course, in other embodiments, the connecting portion 123 and the filter housing 20 can be threadedly connected only, or can be fixed by threadedly connecting and other ways (such as welding, etc.).

[0100] Please refer to Figure 1 、 Figure 2 Some embodiments of the present application provide a filter, including a filter housing 20, and the capacitive coupling assembly 10 provided by the embodiments of the present application.

[0101] It should be noted that the filter includes a filter housing 20. The inside of the filter housing 20 has a closed inner cavity, which can achieve a shielding function to prevent signal leakage. One side of the filter housing 20 is a first plate 21, and the plate opposite to the first plate 21 of the filter housing 20 is a second plate 22. In actual application scenarios, the filter can be placed with the second plate 22 facing up, or placed with the second plate 22 facing left, right, front or back. In addition, the shape, size, material, etc. of the filter housing 20 can be flexibly set as needed.

[0102] The filter further includes a plurality of resonant rods 30 arranged in the filter housing 20. The plurality of resonant rods 30 are arranged as needed to build the required coupling relationship. Among them, one end of the resonant rod 30 is fixedly connected to the wall of the filter housing 20 (such as the first plate 21 or the second plate 22, etc.), and the resonant rod 30 can be connected and fixed to the filter housing 20 by means of, but not limited to, integral connection, welding, screw fastening, threaded connection, riveting, pressure connection, clamping, etc. Among them, the resonant rod 30 can be a metal resonant rod, a ceramic dielectric resonant rod, or a dielectric resonant rod of other materials; the resonant rod 30 can be a hollow resonant rod or a solid resonant rod; the resonant rod 30 can have a resonant disc or not; the resonant disc can have a flange or not; the resonant rod 30 can be a circular rod, a polygonal rod, a special-shaped rod, a sheet-shaped resonant rod, a sheet metal resonant rod, or other shaped resonant rods, etc.

[0103] The filter further includes a capacitive coupling assembly 10, which can be any capacitive coupling assembly 10 of the embodiments of the present application. The capacitive coupling assembly 10 can be arranged between any two resonant rods 30 to enable capacitive coupling between the two resonant rods 30.

[0104] By using the above scheme, the filter can build a capacitive coupling relationship by applying the capacitive coupling assembly 10 provided by the embodiments of the present application, improve the consistency, quality and yield of the filter, and reduce the failure rate and debugging cost of the filter.

[0105] The above merely provides optional embodiments of the present application, but not for limiting the present application. For those skilled in the art, the present application can have various modifications and changes. Any modifications, equivalent replacements, improvements, etc., made within the principles and technical scope of the present application, should be included in the scope of the claims of the present application.

Claims

1. A capacitive coupling component, disposed within a filter housing, characterized in that, The capacitive coupling assembly comprises: A coupling member, the coupling member has a mounting hole; The mounting member is an insulating member, the mounting member comprises a buckle portion and a connecting portion connected in sequence, the connecting portion is threadedly connected to the filter housing, and the buckle portion is provided through the mounting hole and is in axial limiting buckling fit with the mounting hole.

2. The capacitive coupling assembly of claim 1, wherein, The mounting member comprises a stop portion connected between the buckle portion and the connecting portion, the stop portion is stopped at one side hole of the mounting hole, the outer periphery of the buckle portion is provided with a buckle protrusion, and the buckle protrusion is buckled at the other side hole of the mounting hole.

3. The capacitive coupling assembly of claim 2, wherein, The buckle portion is provided with a cutting groove, an extension direction of the cutting groove is perpendicular to an axial direction of the buckle portion, the cutting groove is provided through along the extension direction, a groove depth direction of the cutting groove is parallel to the axial direction of the buckle portion, and the cutting groove passes through the buckle protrusion along the groove depth direction.

4. The capacitive coupling assembly of claim 3, wherein, The cutting groove is arranged on an end face of the buckle portion close to the stop portion.

5. The capacitive coupling assembly of claim 4, wherein, The cutting groove is provided with two cutting grooves, and the two cutting grooves are symmetrically distributed about a central axis of the buckle portion.

6. The capacitive coupling assembly of claim 3, wherein, The cutting groove is arranged on an end face of the buckle portion away from the stop portion.

7. The capacitive coupling assembly of claim 3, wherein, The cutting groove is arranged on an outer peripheral surface of the buckle portion, and opposite sides of the cutting groove along the groove depth direction are closed.

8. The capacitive coupling assembly of any one of claims 2-7, wherein, The outer peripheral surface of the buckle portion has a guide conical surface, the guide conical surface is located on a side of the buckle protrusion away from the stop portion, and a radial dimension of the guide conical surface is gradually reduced in a direction away from the buckle protrusion.

9. The capacitive coupling assembly of any one of claims 1-7, wherein, The connecting portion has an external thread, the filter housing is provided with a threaded hole, and the connecting portion is threadedly connected in the threaded hole of the filter housing.

10. The capacitive coupling assembly of claim 9, wherein, The mounting member comprises a stop portion connected between the buckle portion and the connecting portion, and the stop portion is stopped at a hole of the threaded hole.

11. The capacitive coupling assembly of any one of claims 1-7, wherein, The mounting member comprises an operation portion.

12. The capacitive coupling assembly of claim 11, wherein, The operation portion is arranged on an outer peripheral wall of the mounting member.

13. The capacitive coupling assembly of any one of claims 1-7, wherein, The connecting portion is adhesively fixed to the filter housing.

14. A filter, characterized by The capacitive coupling assembly comprises: The capacitive coupling assembly comprises:

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