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 and comprises a buckling part and a connecting part which are connected in sequence, the buckling part penetrates through the mounting hole and is buckled and matched with the mounting hole in an axial limiting manner, and the connecting part is inserted into the connecting hole and is limited to be separated from the connecting hole by the limiting bulge. Based on the above structure, the installation piece can support and fix the coupling piece and enable the coupling piece to be not grounded through a simplified and optimized structure, compared with an installation structure of an existing capacitive coupling assembly, the number of parts can be obviously reduced, and therefore the capacitive coupling assembly can simplify and optimize the structure, reduce the number of the parts, shorten a tolerance chain and improve the installation efficiency. Therefore, the accumulated tolerance can be reduced, the assembly process can be simplified and optimized, and the installation reliability, the assembly convenience and the assembly efficiency can be improved.

Description

TECHNICAL FIELD

[0001] The 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 comprises 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 comprises a coupling sheet and a mounting structure, the coupling sheet extends from one resonant rod to another resonant rod and realizes capacitive coupling of the two resonant rods, the coupling sheet penetrates a mounting hole corresponding to the mounting structure, the mounting structure comprises 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 of the mounting hole away from the non-metallic gasket, 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 insulated, so that the coupling sheet is not grounded, thereby enabling the coupling sheet to realize 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] The capacitive coupling assembly provided by the embodiments of the application aims 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 object, the technical scheme adopted by the embodiments of the application is as follows:

[0006] In a first aspect, a capacitive coupling assembly is provided, which is arranged in a filter housing, the filter housing is provided with a connecting hole, the hole wall of the connecting hole is provided with a limiting protrusion, and the capacitive coupling assembly comprises:

[0007] A coupling piece, the coupling piece penetrates a mounting hole;

[0008] A mounting piece, the mounting piece is an insulating piece, the mounting piece comprises a buckle part and a connecting part connected in sequence, the buckle part is arranged in the mounting hole and is axially limited and buckled with the mounting hole, and the connecting part is inserted into the connecting hole and is limited by the limiting protrusion to prevent the connecting part from coming out of the connecting hole.

[0009] In some embodiments, the connecting portion comprises a plug-in segment and a first clamping segment connected to a side of the plug-in segment away from the clamping portion, the plug-in segment is transitionally or interference-fitted with the connecting hole, and an outer periphery of the first clamping segment is provided with a first clamping protrusion which is clamped to a side of the limiting protrusion away from the connecting hole.

[0010] In some embodiments, the first clamping segment is provided with a first cutting groove, an extension direction of the first cutting groove is perpendicular to an axial direction of the mounting member, the first cutting groove is provided through along the extension direction thereof, a groove depth direction of the first cutting groove is parallel to the axial direction of the mounting member, and the first cutting groove passes through the first clamping protrusion along the groove depth direction thereof.

[0011] In some embodiments, the first cutting groove is opened at an end face of the first clamping segment close to the plug-in segment.

[0012] In some embodiments, the first cutting groove is provided with two first cutting grooves which are symmetrically distributed about a central axis of the mounting member.

[0013] In some embodiments, an outer peripheral surface of the first clamping segment is provided with a first guide conical surface which is located at a side of the first clamping protrusion away from the plug-in segment, and a radial dimension of the first guide conical surface is gradually reduced in a direction away from the first clamping protrusion.

[0014] In some embodiments, the connecting portion is in a columnar shape and is interference-fitted with the connecting hole.

[0015] In some embodiments, the mounting member comprises a stop portion connected between the clamping portion and the connecting portion, and the stop portion is stopped at an opening of the connecting hole.

[0016] In some embodiments, the connecting portion is abutted to a bottom of the connecting hole.

[0017] In some embodiments, the connecting portion comprises a first stop platform connected between the plug-in segment and the first clamping segment, and the first stop platform is stopped at a side of the limiting protrusion close to the opening of the connecting hole.

[0018] In some embodiments, the clamping portion comprises a second clamping segment and a second stop platform connected to a side of the second clamping segment close to the connecting portion, the second stop platform is stopped at a side of the mounting hole, an outer periphery of the second clamping segment is provided with a second clamping protrusion which is clamped to the other side of the mounting hole.

[0019] In some embodiments, the second buckle section is provided with a second cut-off groove, the extension direction of the second cut-off groove is perpendicular to the axial direction of the mounting member, the second cut-off groove is provided through along its extension direction, the groove depth direction of the second cut-off groove is parallel to the axial direction of the mounting member, and the second cut-off groove passes through the second buckle protrusion along its groove depth direction.

[0020] In some embodiments, the second cut-off groove is opened on the end face of the second buckle section close to the second stop platform.

[0021] In some embodiments, the second cut-off groove is provided with two, and the two second cut-off grooves are symmetrically distributed about the central axis of the mounting member.

[0022] In some embodiments, the second cut-off groove is opened on the end face of the second buckle section away from the second stop platform.

[0023] In some embodiments, the second cut-off groove is opened on the outer peripheral surface of the buckle part, and the opposite sides of the second cut-off groove along its groove depth direction are closed.

[0024] In some embodiments, the outer peripheral surface of the second buckle section has a second guide conical surface, the second guide conical surface is located on the side of the second buckle protrusion away from the second stop platform, and the radial dimension of the second guide conical surface is tapered in the direction away from the second buckle protrusion.

[0025] In a second aspect, a filter is provided, comprising a filter housing and the capacitive coupling assembly provided in the embodiments of the application.

[0026] The capacitive coupling assembly provided in the application has the following beneficial effects:

[0027] 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 inserted into the connection hole of the filter housing via a connecting part, and a limiting protrusion can lock and limit the connecting part to prevent it from dislodging from the connection hole, thus ensuring the mounting component is fixed to the filter housing and achieving positioning and stabilization of the mounting component's installation position and state relative 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 limit and engage with 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. This is particularly important for stabilizing the axial height of the coupling member relative to the mounting component, and ensuring a stable and reliable insulating distance between the coupling member and the wall of the filter housing. Based on this, the mounting component can achieve support and fixation of 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, can significantly reduce the number of parts. Therefore, the capacitive coupling component of this embodiment can simplify and optimize the structure, reduce the number of parts, shorten the tolerance chain, reduce the cumulative tolerance, simplify and optimize the assembly process, and improve installation reliability, assembly convenience and assembly efficiency. Attached Figure Description

[0028] 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.

[0029] Figure 1 A three-dimensional schematic diagram of a filter provided in some embodiments of this application;

[0030] Figure 2 Cross-sectional views of filters provided in some embodiments of this application;

[0031] Figure 3 for Figure 2 An enlarged view of region A is provided, in which the connecting part includes a plug-in section and a first snap-fit ​​section;

[0032] Figure 4 for Figure 2 An exploded view of the provided capacitive coupling component;

[0033] Figure 5 for Figure 2 A partial structural schematic diagram of the provided filter housing;

[0034] Figure 6A cross-sectional view of the filter provided for another embodiment of the present application, wherein the connecting portion is in the shape of a column and is inserted into the connecting hole in an interference fit;

[0035] Figure 7 A partial structural schematic view of the filter housing provided for Figure 6 A partial structural schematic view of the filter housing provided for

[0036] Figure 8 A partial structural schematic view of the filter provided for another embodiment of the present application, wherein the second truncated groove is formed on the end face of the second buckle segment away from the second stop platform; Figure 6

[0037] A partial structural schematic view of the filter provided for another embodiment of the present application, wherein the second truncated groove is formed on the end face of the second buckle segment away from the second stop platform; Figure 9

[0038] A partial structural schematic view of the filter provided for another embodiment of the present application, wherein the second truncated groove is formed on the end face of the second buckle segment away from the second stop platform; Figure 10 Figure 9 A partial structural schematic view of the filter provided for another embodiment of the present application, wherein the second truncated groove is formed on the end face of the second buckle segment away from the second stop platform;

[0039] Figure 11 A partial structural schematic view of the filter provided for another embodiment of the present application, wherein the second truncated groove is formed on the end face of the second buckle segment away from the second stop platform.

[0040]

[0041] 10 - capacitive coupling assembly, 11 - coupling member, 111 - mounting hole; 12 - mounting member, 121 - buckle portion, 1211 - second buckle segment, 12111 - second buckle protrusion, 12112 - second truncated groove, 12113 - second guide conical surface, 1212 - second stop platform; 122 - connecting portion, 1221 - insertion segment, 1222 - first buckle segment, 12221 - first buckle protrusion, 12222 - first truncated groove, 12223 - first guide conical surface, 1223 - first stop platform; 123 - stop portion, L - central axis of the mounting member; 20 - filter housing, 21 - first plate member, 211 - boss, 2111 - connecting hole, 21111 - limiting protrusion, 22 - second plate member; 30 - resonant rod, 30a - first resonant rod, 30b - second resonant rod, 30c - third resonant rod. DETAILED DESCRIPTION

[0042] ​​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 accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not intended 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.

[0043] 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 used to facilitate the description of the present application and simplify the description, and do not indicate or imply 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.

[0044] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise explicitly specified and limited.

[0045] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium; 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.

[0046] 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 surface of the corresponding structure.

[0047] 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 extending from one resonant rod to another resonant rod and achieving capacitive coupling between the two resonant rods, and a mounting structure. 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 shank. The head of the non-metallic screw is stopped at an opening of the mounting hole away from the non-metallic gasket. The shank of the non-metallic screw is arranged in the mounting hole and the non-metallic gasket, and is threadedly connected to the filter housing. In this way, 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 insulated manner, so that the coupling sheet is not grounded, and the two resonant rods can be coupled in a capacitive manner.

[0048] However, the capacitive coupling assembly has a large number of components, a long tolerance chain (i.e., a cumulative tolerance chain of machining and assembly errors of the non-metallic screw, the non-metallic gasket, the coupling sheet, and the filter housing), and a large cumulative tolerance, resulting in poor installation reliability. In addition, the non-metallic screw can only withstand a small torque, which can easily cause the non-metallic screw to break during installation, thereby affecting the assembly yield and efficiency. Furthermore, the non-metallic screw can easily loosen during reliability testing of the filter product, thereby affecting the consistency and quality of the filter product and increasing the failure rate of the filter product.

[0049] The embodiments provided in the present application solve the above problems.

[0050] In order to illustrate the technical solutions provided in the present application, the following will be described in detail with reference to specific drawings and embodiments.

[0051] 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 filter housing 20 is provided with a connecting hole 2111. The hole wall of the connecting hole 2111 is provided with a limiting protrusion 21111. The capacitive coupling assembly 10 includes a coupling piece 11 and a mounting piece 12. The coupling piece 11 has a mounting hole 111. The mounting piece 12 is an insulating piece. The mounting piece 12 includes a buckle portion 121 and a connecting portion 122 connected in sequence. The buckle portion 121 is arranged in the mounting hole 111 and is axially limited and buckled to cooperate with the mounting hole 111. The connecting portion 122 is inserted into the connecting hole 2111 and is limited by the limiting protrusion 21111 to prevent the connecting portion 122 from coming out of the connecting hole 2111.

[0052] 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 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 and the like of the filter housing 20 can be flexibly set as needed.

[0053] 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 the required coupling relationship. One end of the resonant rod 30 is connected and fixed to the wall of the filter housing 20 (for example, 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. 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 forms of resonant rods, etc.

[0054] The capacitive coupling assembly 10 can be arranged between any two resonant rods 30 to enable capacitive coupling between the two resonant rods 30.

[0055] In the case where the number of resonant rods 30 is at least three, the capacitive coupling assembly 10 can be arranged between two non-adjacent resonant rods 30 to enable capacitive cross-coupling between the two resonant rods 30. The two non-adjacent resonant rods 30 are not adjacent in the main signal transmission path, that is, the coupling between the two resonant rods 30 via the capacitive coupling assembly 10 is cross-coupling, that is, the coupling relationship between the two resonant rods 30 is non-cascading. For example, as shown in Figure 2 In a specific example of the filter, three resonant rods 30 are arranged in the filter housing 20, and the three resonant rods 30 are a first resonant rod 30a, a second resonant rod 30b and a third resonant rod 30c. The coupling path of the first resonant rod 30a, the second resonant rod 30b and the third resonant rod 30c is the main signal transmission path, and the first resonant rod 30a and the third resonant rod 30c are not adjacent in the main signal transmission path. The capacitive coupling assembly 10 can be arranged between the non-adjacent first resonant rod 30a and the third resonant rod 30c to enable capacitive cross-coupling between the first resonant rod 30a and the third resonant rod 30c.

[0056] Of course, the capacitive coupling assembly 10 can also be arranged between two adjacent resonant rods 30 to enable capacitive coupling between the two resonant rods 30. The two adjacent resonant rods 30 are adjacent in the main signal transmission path, and the coupling between the two resonant rods 30 via the capacitive coupling assembly 10 is a coupling relationship in the main signal transmission path, that is, the coupling relationship between the two resonant rods 30 is cascaded.

[0057] It should also be noted that the capacitive coupling assembly 10 includes a coupling member 11, which is a metal member, or the coupling member 11 is a non-metal member with a metal layer on the surface. At least one end of the coupling member 11 in its extension direction is not grounded, that is, one end of the coupling member 11 in its extension direction is not grounded, and the other end is grounded, or both ends of the coupling member 11 in its extension direction are not grounded. Among them, grounding means that the end of the coupling member 11 is in conductive connection with the filter housing 20, and not grounding means that the end of the coupling member 11 is insulated from (that is, not in conductive connection with) the filter housing 20. The coupling member 11 can extend from one resonant rod 30 to another resonant rod 30 to enable capacitive coupling between the two resonant rods 30 via the coupling member 11. Among them, the coupling member 11 can be, but is not limited to, a sheet, a rod, and the like.

[0058] The capacitive coupling assembly 10 also includes at least one mounting member 12, which is an insulating member, that is, the mounting member 12 is made of insulating material and has insulating properties, and for example, the mounting member 12 can be a non-metal member. The at least one mounting member 12 is arranged at the end of the coupling member 11 to support and fix the end of the coupling member 11 and make the end of the coupling member 11 not grounded; on this basis, part of the mounting member 12 is arranged in the non-end region (for example, the middle region) of the coupling member 11 to support and fix the corresponding region of the coupling member 11.

[0059] The coupling member 11 is provided with mounting holes 111 corresponding to the mounting members 12, the mounting holes 111 are through holes and pass through the coupling member 11, the mounting holes 111 can be circular holes, rectangular holes, etc. according to needs, and the size of the mounting holes 111 can be set according to needs. The mounting member 12 includes a buckle portion 121, which is arranged in the mounting hole 111 of the coupling member 11 and is buckled and matched with the mounting hole 111 and axially limited, 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 mounting position and mounting state of the coupling member 11 relative to the mounting member 12 and the filter housing 20 are stabilized, especially the height position of the coupling member 11 in the axial direction of the mounting member 12 is 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. The axial direction of the mounting member 12 is the extension direction of the central axis L of the mounting member 12.

[0060] The mounting member 12 further includes a connecting portion 122, and the buckle portion 121 and the connecting portion 122 are sequentially arranged and integrally connected in the axial direction of the mounting member 12. Correspondingly, the wall portion (for example, the first plate member 21) of the filter housing 20 is provided with a connecting hole 2111, which is a blind hole, and the connecting hole 2111 is arranged corresponding to the connecting portion 122 of the mounting member 12. The connecting portion 122 of the mounting member 12 is inserted into the connecting hole 2111, so that the mounting member 12 is limited and positioned relative to the wall portion of the filter housing 20, thereby positioning and stabilizing the mounting position and mounting state of the mounting member 12 relative to the filter housing 20, and limiting the planar movement of the mounting member 12 relative to the wall portion of the filter housing 20. The cooperation between the connecting portion 122 and the connecting hole 2111 can be an interference fit, a transition fit or a small gap fit.

[0061] The hole wall of the connecting hole 2111 further protrudes a limiting protrusion 21111, which can be arranged in the circumferential direction of the connecting hole 2111; the limiting protrusion 21111 can also include a plurality of protruding structures, which can be distributed on the hole wall of the connecting hole 2111 in the circumferential direction of the connecting hole 2111, in the axial direction of the connecting hole 2111, or randomly on the hole wall of the connecting hole 2111. As shown in Figure 5 As shown in Figure 6 、 Figure 7In some embodiments, the limiting protrusion 21111 is arranged along the circumferential direction of the connecting hole 2111, for example, the limiting protrusion 21111 includes a plurality of small protrusions arranged at intervals along the circumferential direction of the connecting hole 2111, for example, the limiting protrusion 21111 is in the shape of an open ring, and the like. In some embodiments, the limiting protrusion 21111 includes a plurality of protruding structures, for example, the limiting protrusion 21111 includes a plurality of small protrusions or small protruding rings distributed in a staggered manner (not on the same circumference) in the hole wall of the connecting hole 2111. In the case where the connecting part 122 has been inserted into the connecting hole 2111, the limiting protrusion 21111 can clamp and limit the connecting part 122, so as to limit the axial movement of the connecting part 122 in the direction close to the hole opening of the connecting hole 2111, and prevent the connecting part 122 from coming out of the connecting hole 2111, thereby positioning and stabilizing the axial position of the mounting part 12 relative to the connecting hole 2111, and stabilizing and firmly the mounting position and mounting state of the mounting part 12 relative to the filter housing 20.

[0062] In summary, the capacitive coupling assembly 10 provided by the embodiments of the present application can support and fix the coupling part 11 through the mounting part 12 and make the coupling part 11 not grounded, and can realize the capacitive coupling of the two resonant rods 30 through the coupling part 11. The mounting part 12 can be inserted into the connecting hole 2111 of the filter housing 20 through the connecting part 122, and the connecting part 122 is clamped and limited by the limiting protrusion 21111 to prevent the connecting part 122 from coming out of the connecting hole 2111, so as to connect and fix the mounting part 12 to the filter housing 20, and realize the positioning and stabilization of the mounting position and mounting state of the mounting part 12 relative to the filter housing 20. The mounting part 12 can also pass through the mounting hole 111 of the coupling part 11 through the buckle part 121, and is axially limited and buckled with the mounting hole 111, so as to support and fix the coupling part 11, and stabilize the mounting position and mounting state of the coupling part 11 relative to the mounting part 12 and the filter housing 20, especially the height position of the coupling part 11 in the axial direction of the mounting part 12, and especially make the coupling part 11 and the wall part of the filter housing 20 stably and reliably insulated and spaced. Therefore, the mounting part 12 can support and fix the coupling part 11 and make the coupling part 11 not grounded in a simplified and optimized structure. Compared with the mounting structure composed of multiple components of the existing capacitive coupling assembly, the mounting part 12 as an individual component can significantly reduce the number of components. Therefore, the capacitive coupling assembly 10 of the embodiments 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.

[0063] And, controllability and stability of the height position of the coupling member 11 in the axial direction of the mounting member 12 can be improved, consistency and usability of the capacitive coupling assembly 10 can be improved, 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.

[0064] And, the mounting member 12 of the embodiment does not need to be threaded as the non-metallic screw of the existing capacitive coupling assembly, the mounting member 12 can withstand a larger torque, and the connection strength, connection stability and connection reliability between the mounting member 12 and the filter housing 20 and between the mounting member 12 and the coupling member 11 are all better, so that the mounting member 12 of the embodiment is less likely to break during installation, thereby facilitating the improvement of the assembly yield, assembly efficiency and product reliability of the capacitive coupling assembly 10 and the filter; the mounting member 12 of the embodiment is also less likely to loosen during the reliability test of the filter product, thereby facilitating the improvement of the consistency and usability of the capacitive coupling assembly 10, the consistency, quality and yield of the filter using the capacitive coupling assembly 10, and the reduction of the failure rate, test cost and debugging cost of the filter using the capacitive coupling assembly 10.

[0065] As shown in Figure 2 , Figure 3 , Figure 5 In some embodiments, the wall portion (for example, the first plate member 21) of the filter housing 20 is provided with a boss 211, and the connecting hole 2111 is formed on the boss 211, so that the height position of the mounting member 12 and the coupling member 11 can be raised, and the connection strength, connection reliability and connection stability between the mounting member 12 and the filter housing 20 can be improved. In another embodiment, the wall portion (for example, the first plate member 21) of the filter housing 20 is a flat plate structure, and the connecting hole 2111 can be formed on the plate surface of the flat plate structure.

[0066] Please refer to Figure 2 , Figure 3 , Figure 4 In some embodiments of the present application, the connecting portion 122 includes a plug-in segment 1221 and a first buckle segment 1222 connected to the side of the plug-in segment 1221 away from the buckle portion 121, the plug-in segment 1221 is in transition fit or interference fit with the connecting hole 2111, and the outer periphery of the first buckle segment 1222 is provided with a first buckle protrusion 12221, and the first buckle protrusion 12221 is buckled to the side of the limiting protrusion 21111 away from the hole of the connecting hole 2111.

[0067] It should be noted that the connecting portion 122 includes the plug-in segment 1221 and the first buckle segment 1222, and the plug-in segment 1221 and the first buckle segment 1222 are sequentially arranged and integrally connected in the direction away from the buckle portion 121.

[0068] The insertion section 1221 is inserted into the connection hole 2111, and the insertion section 1221 and the connection hole 2111 are in a fit or transition fit (i.e., an adaptive fit). Based on this, based on the fit between the insertion section 1221 and the connection hole 2111, the radial movement of the connecting portion 122 in the connection hole 2111 can be limited, and the looseness of the connecting portion 122 can be reduced.

[0069] The outer periphery of the first clamping section 1222 is provided with a first clamping protrusion 12221, which is outwardly protruding relative to the outer peripheral wall of the first clamping section 1222. The connecting portion 122 is inserted into the connection hole 2111 until the first clamping protrusion 12221 passes over the limiting protrusion 21111 and is clamped on the side of the limiting protrusion 21111 away from the opening of the connection hole 2111. In this case, the limiting protrusion 21111 can clamp and limit the first clamping protrusion 12221, so as to limit the axial movement of the connecting portion 122 in the direction close to the opening of the connection hole 2111, and prevent the connecting portion 122 from being pulled out of the connection hole 2111.

[0070] By using the above scheme, the connecting portion 122 can be stably connected in the connection hole 2111 through the fit or transition fit of the insertion section 1221 and the connection hole 2111, so as to limit the radial movement of the connecting portion 122 in the connection hole 2111, thereby preliminarily improving the connection reliability between the connecting portion 122 and the connection hole 2111. The connecting portion 122 can also be clamped and limited by the first clamping protrusion 12221 of the first clamping section 1222 and the limiting protrusion 21111, so as to limit the axial movement of the connecting portion 122 in the direction close to the opening of the connection hole 2111, and prevent the connecting portion 122 from being pulled out of the connection hole 2111, thereby optimally improving the connection reliability between the connecting portion 122 and the connection hole 2111. Thus, the structure of the connecting portion 122 can be optimized, the connection convenience, connection reliability and connection stability between the connecting portion 122 and the connection hole 2111 can be improved, the looseness of the connecting portion 122 relative to the connection hole 2111 can be reduced, and the installation position and state of the mounting member 12 relative to the filter housing 20 can be quickly and reliably positioned and stably installed, thereby facilitating the stable installation position and state of the mounting member 12 and the coupling member 11, facilitating the stable height position of the coupling member 11 in the axial direction of the mounting member 12, improving the assembly reliability, assembly convenience, assembly precision and assembly efficiency of the capacitive coupling assembly 10, and improving the consistency and reliability of the capacitive coupling assembly 10.

[0071] Please refer to Figure 2 , Figure 3 , Figure 4In some embodiments of the present application, the first buckle section 1222 is provided with a first cut-off groove 12222, the extension direction of the first cut-off groove 12222 is perpendicular to the axial direction of the mounting member 12, the first cut-off groove 12222 is provided through along the extension direction thereof, and the groove depth direction of the first cut-off groove 12222 is parallel to the axial direction of the mounting member 12, and the first cut-off groove 12222 passes through the first buckle protrusion 12221 along the groove depth direction thereof.

[0072] It should be noted that the first buckle section 1222 is provided with at least one first cut-off groove 12222. The extension direction of the first cut-off groove 12222 is perpendicular to the axial direction of the mounting member 12, for example, the extension direction of the first cut-off groove 12222 can coincide with any radial direction of the first buckle section 1222 (i.e., the extension direction of the first cut-off groove 12222 can pass through the central axis L of the mounting member 12 and be perpendicular to the central axis L of the mounting member 12), or for example, the extension direction of the first cut-off groove 12222 can be parallel to but not coincide with any radial direction of the first buckle section 1222 (i.e., the extension direction of the first cut-off groove 12222 does not pass through the central axis L of the mounting member 12 but is perpendicular to the central axis L of the mounting member 12). The groove depth direction of the first cut-off groove 12222 is perpendicular to the extension direction of the first cut-off groove 12222 and parallel to the axial direction of the mounting member 12.

[0073] The first cut-off groove 12222 is provided through along the extension direction thereof, and the first cut-off groove 12222 passes through the first buckle protrusion 12221 along the groove depth direction thereof, so that the first cut-off groove 12222 can cut off the complete continuity of the first buckle section 1222, especially the first buckle protrusion 12221, in the circumferential direction, can provide a deformation space for the first buckle section 1222, especially the first buckle protrusion 12221, can reduce the deformation resistance of the first buckle section 1222, especially the first buckle protrusion 12221, and can optimize the elastic deformation capability of the first buckle section 1222, especially the first buckle protrusion 12221. Based on this, in the process that the first buckle section 1222 passes through the limiting protrusion 21111, the first buckle section 1222, especially the first buckle protrusion 12221, can adaptively produce elastic contraction deformation, so as to facilitate the first buckle section 1222 to quickly and smoothly pass through the limiting protrusion 21111, that is, to facilitate the first buckle protrusion 12221 to quickly and smoothly pass from the side of the limiting protrusion 21111 close to the connecting hole 2111 to the side of the limiting protrusion 21111 away from the connecting hole 2111; after the first buckle protrusion 12221 passes through the limiting protrusion 21111, the first buckle section 1222, especially the first buckle protrusion 12221, can quickly and automatically restore the elastic deformation, so as to facilitate the first buckle protrusion 12221 to be buckled to the side of the limiting protrusion 21111 away from the connecting hole 2111.

[0074] By adopting the above scheme, the first buckle segment 1222, especially the first buckle protrusion 12221, can be cut off in the circumferential direction by the first cutting groove 12222, and the first buckle segment 1222, especially the first buckle protrusion 12221, can be provided with a deformation space, so as to reduce the deformation resistance of the first buckle segment 1222, especially the first buckle protrusion 12221, and optimize the elastic deformation capability of the first buckle segment 1222, especially the first buckle protrusion 12221. Based on this, in the assembly process of inserting the first buckle segment 1222 into the connecting hole 2111, the first buckle segment 1222, especially the first buckle protrusion 12221, can be elastically deformed by adaptively shrinking when passing through the limiting protrusion 21111, so that the first buckle segment 1222 can quickly and smoothly pass through the limiting protrusion 21111, and the first buckle protrusion 12221 can quickly and smoothly pass over the limiting protrusion 21111, thereby improving the assembly convenience and efficiency between the mounting piece 12 and the filter shell 20. After the first buckle protrusion 12221 passes over the limiting protrusion 21111, the first buckle segment 1222, especially the first buckle protrusion 12221, can quickly and automatically recover the elastic deformation, so that the first buckle protrusion 12221 can be reliably buckled on the side of the limiting protrusion 21111 away from the connecting hole 2111, and the assembly reliability and connection reliability between the mounting piece 12 and the filter shell 20 can be maintained and improved.

[0075] Of course, in other embodiments, the first buckle segment 1222 can have a certain elastic deformation capability based on the material thereof, and in this case, the first buckle segment 1222 can be omitted as needed.

[0076] Please refer to Figure 2 , Figure 3 , Figure 4 In some embodiments of the present application, the first cutting groove 12222 is arranged on the end face of the first buckle segment 1222 close to the insertion segment 1221.

[0077] It should be noted that the first cutting groove 12222 is arranged on the end face of the first buckle segment 1222 close to the insertion segment 1221, that is, in the groove depth direction of the first cutting groove 12222, the groove opening of the first cutting groove 12222 is arranged on the end face of the first buckle segment 1222 close to the insertion segment 1221, and the groove bottom of the first cutting groove 12222 is closed.

[0078] By adopting the above scheme, by opening the first cut-off groove 12222 at the end face of the first buckle segment 1222 close to the plug-in segment 1221, the slot opening of the first cut-off groove 12222 can be arranged at the end face of the first buckle segment 1222 close to the plug-in segment 1221, and not communicated to the end face of the first buckle segment 1222 away from the plug-in segment 1221, so that the first cut-off groove 12222 can form a limited cut in the axial direction of the first buckle segment 1222. Based on this, on the one hand, the first cut-off groove 12222 can provide sufficient space for the deformation of the first buckle segment 1222, especially the first buckle protrusion 12221, so that the first buckle segment 1222, especially the first buckle protrusion 12221, can flexibly adapt to the elastic shrinkage deformation under the extrusion of the limiting protrusion 21111, so that the first buckle protrusion 12221 can smoothly pass through the limiting protrusion 21111, and then quickly recover the original shape to be tightly buckled on the side of the limiting protrusion 21111 away from the connecting hole 2111, thereby improving the connection convenience, connection reliability between the mounting piece 12 and the filter shell 20. On the other hand, since the first cut-off groove 12222 is not communicated to the end face of the first buckle segment 1222 away from the plug-in segment 1221, it is beneficial to maintain the structural strength of the region of the first buckle segment 1222 away from the plug-in segment 1221, thereby improving the structural reliability, use reliability and service life of the mounting piece 12 and the capacitive coupling assembly 10.

[0079] Of course, in other embodiments, the first cut-off groove 12222 can be opened on the outer peripheral surface of the first buckle segment 1222; along the groove depth direction of the first cut-off groove 12222, the opposite sides of the first cut-off groove 12222 are closed, or the side of the first cut-off groove 12222 away from the plug-in segment 1221 is communicated to the outside of the first buckle segment 1222.

[0080] Please refer to Figure 2 、 Figure 3 、 Figure 4 In some embodiments of the present application, the first cut-off groove 12222 is provided with two first cut-off grooves 12222, and the two first cut-off grooves 12222 are symmetrically distributed about the central axis L of the mounting piece 12.

[0081] It should be noted that, on the basis of the above embodiment, i.e. on the basis that the first cut-off groove 12222 is opened at the end face of the first buckle segment 1222 close to the plug-in segment 1221, the first cut-off groove 12222 is provided with two first cut-off grooves 12222, and the two first cut-off grooves 12222 are arranged in parallel and spaced apart, and are arranged on opposite sides of the central axis L of the mounting piece 12, and are symmetrically distributed about the central axis L of the mounting piece 12.

[0082] By adopting the above scheme, the first buckle segment 1222 can be caused to produce balanced deformation when subjected to external force through the two symmetrically distributed first cut-off grooves 12222, thereby helping the first buckle segment 1222, especially the first buckle protrusion 12221, to smoothly pass through the limiting protrusion 21111, 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 filter shell 20. Moreover, the first buckle segment 1222 can be caused to uniformly disperse stress when subjected to force through the two symmetrically distributed first cut-off grooves 12222, thereby improving the load capacity, use reliability and service life of the first buckle segment 1222.

[0083] Of course, in other embodiments, the number and position of the first cut-off grooves 12222 can be flexibly set, for example, only one first cut-off groove 12222 can be provided, and for example, two first cut-off grooves 12222 can be provided, but the two first cut-off grooves 12222 are not symmetrically distributed, and the like.

[0084] Please refer to Figure 2 , Figure 3 , Figure 4 In some embodiments of the present application, the outer circumferential surface of the first buckle segment 1222 has a first guide conical surface 12223, the first guide conical surface 12223 is located on the side of the first buckle protrusion 12221 away from the insertion segment 1221, and the radial dimension of the first guide conical surface 12223 is taperedly arranged away from the first buckle protrusion 12221.

[0085] It should be noted that at least part of the outer circumferential surface of the first buckle segment 1222 is the first guide conical surface 12223. The first guide conical surface 12223 is located on the side of the first buckle protrusion 12221 away from the insertion segment 1221, based on which, the first guide conical surface 12223 will pass through the limiting protrusion 21111 before the first buckle protrusion 12221 in the assembly process of inserting the first buckle segment 1222 into the connecting hole 2111; and since the radial dimension of the first guide conical surface 12223 is taperedly arranged away from the first buckle protrusion 12221, the end of the first guide conical surface 12223 with smaller radial dimension will pass through the limiting protrusion 21111 before the end of the first guide conical surface 12223 with larger radial dimension, thereby gradually guiding the first buckle segment 1222 to pass over the limiting protrusion 21111.

[0086] By adopting the above scheme, in the process of inserting the first buckle section 1222 into the connecting hole 2111, the first guide cone surface 12223, which is arranged in a tapered manner in a direction away from the first buckle protrusion 12221 and has a radial dimension, can be used as a guide surface to guide the first buckle section 1222 and the first buckle protrusion 12221 away from the one end of the insertion section 1221 to smoothly pass through the limiting protrusion 21111, thereby improving the assembly convenience and efficiency between the mounting member 12 and the filter shell 20.

[0087] Please refer to Figure 6 、 Figure 7 、 Figure 8 In some embodiments of the present application, the connecting portion 122 is in a columnar shape and is inserted into the connecting hole 2111 in an interference fit.

[0088] It should be noted that the connecting portion 122 is in a columnar shape, and the cross-sectional shape of the connecting portion 122 perpendicular to the axial direction of the mounting member 12 is the same as the cross-sectional shape of the connecting hole 2111 perpendicular to the axial direction of the connecting hole 2111, for example, the connecting hole 2111 is a circular hole and the connecting portion 122 is a circular column, and for example, the connecting hole 2111 is a rectangular hole and the connecting portion 122 is a prismatic column. The connecting portion 122 is directly inserted into the connecting hole 2111 in an interference fit.

[0089] By adopting the above scheme, the connecting portion 122 can be simply structured in a columnar shape and directly inserted into the connecting hole 2111 in an interference fit to stabilize the planar position and radial position of the connecting portion 122 in the connecting hole 2111 and limit the radial movement of the connecting portion 122 in the connecting hole 2111; and the limiting protrusion 21111 can be used to block the connecting portion 122 to limit the axial movement of the connecting portion 122 in the direction close to the opening of the connecting hole 2111 and prevent the connecting portion 122 from being pulled out of the connecting hole 2111. Thus, the structure of the connecting portion 122 can be greatly simplified and optimized, the connection convenience, reliability and stability between the connecting portion 122 and the connecting hole 2111 can be improved, the loosening of the connecting portion 122 relative to the connecting hole 2111 can be reduced, and the installation position and state of the mounting member 12 relative to the filter shell 20 can be quickly and reliably positioned and stabilized, thereby facilitating the stable installation position and state of the mounting member 12 and the coupling member 11, facilitating the stable axial height position of the coupling member 11 relative to the mounting member 12, improving the assembly reliability, convenience, precision and efficiency of the capacitive coupling assembly 10, and improving the consistency and reliability of the capacitive coupling assembly 10.

[0090] Please refer to Figure 2 、 Figure 3 、 Figure 6In some embodiments of the present application, the mounting piece 12 comprises a stop portion 123 connected between the buckle portion 121 and the connecting portion 122, and the stop portion 123 is stopped at the aperture of the connecting hole 2111.

[0091] It should be noted that the present embodiment is compatible with the related embodiments of "the connecting portion 122 comprises a plug-in section 1221, and a first buckle section 1222 connected to the side of the plug-in section 1221 away from the buckle portion 121, the plug-in section 1221 is transitionally fitted or interference fitted with the connecting hole 2111, and the outer periphery of the first buckle section 1222 is provided with a first buckle protrusion 12221, and the first buckle protrusion 12221 is buckled to the side of the limiting protrusion 21111 away from the aperture of the connecting hole 2111", and is also compatible with the related embodiments of "the connecting portion 122 is in a columnar shape and is interference plug-in fitted with the connecting hole 2111".

[0092] It should be further noted that the mounting piece 12 comprises the stop portion 123, and the buckle portion 121, the stop portion 123 and the connecting portion 122 are sequentially arranged and integrally connected along the axial direction of the mounting piece 12. The stop portion 123 is stopped at the aperture of the connecting hole 2111 to provide positioning utility. The shape of the stop portion 123 can be set as needed, for example, it can be in a prismatic shape, a cylindrical shape, a prismatic frustum shape, a circular frustum shape, a stepped shape, etc.

[0093] By adopting the above scheme, in the case that the mounting piece 12 includes the stop portion 123, and the connecting portion 122 is connected to the connecting hole 2111 of the filter shell 20, by stopping the stop portion 123 at the hole mouth of the connecting hole 2111, the axial positioning of the mounting piece 12 relative to the filter shell 20 can be facilitated. Based on this, the abutment between the stop portion 123 and the hole mouth of the connecting hole 2111 can be used to limit the axial movement of the connecting portion 122 in the direction of approaching the hole bottom of the connecting hole 2111. In addition, the clamping and limiting of the connecting portion 122 by the limiting protrusion 21111 can be used to limit the axial movement of the connecting portion 122 in the direction of approaching the hole mouth of the connecting hole 2111, and to limit the disengagement of the connecting portion 122 from the connecting hole 2111. Thus, the axial positioning of the mounting piece 12 relative to the connecting hole 2111 in two directions can be facilitated, the axial position of the mounting piece 12 relative to the connecting hole 2111 can be stabilized and firmly fixed, the installation position and state of the mounting piece 12 on the filter shell 20 can be accurately controlled and reliably stabilized, and the controllability, stability and accuracy of the “height position of the mounting piece 12 relative to the filter shell 20” and the “height position of the coupling piece 11 relative to the filter shell 20” can be improved. Thus, 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. In addition, the close contact between the stop portion 123 and the hole mouth of the connecting hole 2111 can form an additional support point, thereby enhancing the connection strength and reliability between the mounting piece 12 and the filter shell 20, and reducing the loosening of the mounting piece 12, thereby improving the use reliability of the capacitive coupling assembly 10.

[0094] Please refer to Figure 2 、 Figure 3 、 Figure 6 In some embodiments of the present application, the connecting portion 122 abuts against the hole bottom of the connecting hole 2111.

[0095] It should be noted that the present embodiment is compatible with both the related embodiments in which the connecting portion 122 includes the plug-in segment 1221 and the first clamping segment 1222 connected to the side of the plug-in segment 1221 away from the buckle portion 121, the plug-in segment 1221 is transitionally or interference-fitted with the connecting hole 2111, and the outer periphery of the first clamping segment 1222 is provided with the first clamping protrusion 12221 which is buckled to the side of the limiting protrusion 21111 away from the hole mouth of the connecting hole 2111, and the related embodiments in which the connecting portion 122 is in the form of a column and is interference-fitted with the connecting hole 2111.

[0096] It should be noted that, in the case that the connecting portion 122 is inserted into the connecting hole 2111, the connecting portion 122 can abut against the hole bottom of the connecting hole 2111, so as to accurately position the mounting piece 12 in the connecting hole 2111 and limit the connecting portion 122 from continuously moving axially in the direction close to the hole bottom of the connecting hole 2111.

[0097] By adopting the above scheme, the mounting piece 12 can abut against the hole bottom of the connecting hole 2111 through the connecting portion 122, so as to accurately position the mounting piece 12 in the connecting hole 2111 and limit the connecting portion 122 from continuously moving axially in the direction close to the hole bottom of the connecting hole 2111. In addition, the connecting portion 122 can be clamped and limited by the limiting protrusion 21111, so as to limit the connecting portion 122 from moving axially in the direction close to the hole opening of the connecting hole 2111 and from being pulled out of the connecting hole 2111. Thus, the mounting piece 12 can be axially limited in two directions relative to the connecting hole 2111, the axial position of the mounting piece 12 relative to the connecting hole 2111 can be stabilized and fixed, the installation position and state of the mounting piece 12 on the filter shell 20 can be accurately controlled and reliably stabilized, and the controllability, stability and accuracy of the “height position of the mounting piece 12 relative to the filter shell 20” and the “height position of the coupling piece 11 relative to the filter shell 20” can be improved. Therefore, 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.

[0098] Please refer to Figure 2 , Figure 3 , Figure 4 In some embodiments of the present application, the connecting portion 122 comprises a first stop table 1223 connected between the plug-in section 1221 and the first clamping section 1222, and the first stop table 1223 is stopped on the side of the limiting protrusion 21111 close to the hole opening of the connecting hole 2111.

[0099] It should be noted that the present embodiment is mainly applicable to the embodiments related to “the connecting portion 122 comprises a plug-in section 1221 and a first clamping section 1222 connected to the side of the plug-in section 1221 away from the clamping portion 121, the plug-in section 1221 is transitionally or interference-fitted with the connecting hole 2111, and the outer periphery of the first clamping section 1222 is provided with a first clamping protrusion 12221, and the first clamping protrusion 12221 is clamped on the side of the limiting protrusion 21111 away from the hole opening of the connecting hole 2111”.

[0100] It also needs to be explained that the connecting part 122 includes a first stop table 1223, the plug-in segment 1221, the first stop table 1223, and the first buckle segment 1222 are sequentially arranged and integrally connected along the axial direction of the mounting piece 12. The first stop table 1223 is stopped at the side of the limiting protrusion 21111 close to the hole of the connecting hole 2111, so as to provide positioning effect and limit the axial movement of the connecting part 122 in the direction close to the hole bottom of the connecting hole 2111. Among them, the form of the first stop table 1223 can be designed according to the connecting hole 2111 and the limiting protrusion 21111, for example, it can be in the form of a cylinder, a circular table and the like.

[0101] By adopting the above scheme, in the case that the connecting part 122 includes the plug-in segment 1221, the first stop table 1223, and the first buckle segment 1222, and the connecting part 122 is connected to the connecting hole 2111 of the filter shell 20, by making the first stop table 1223 stop at the side of the limiting protrusion 21111 close to the hole of the connecting hole 2111, the axial movement of the connecting part 122 in the direction close to the hole bottom of the connecting hole 2111 can be limited. Based on this, in combination with the setting of “the buckling cooperation between the first buckle segment 1222 and the limiting protrusion 21111 can limit the axial movement of the connecting part 122 in the direction close to the hole of the connecting hole 2111, and the connecting part 122 is out of the connecting hole 2111”, the mounting piece 12 can be bidirectional axial positioning relative to the connecting hole 2111, so that the axial position of the mounting piece 12 relative to the connecting hole 2111 can be stable and firm, the installation position and state of the mounting piece 12 on the filter shell 20 can be accurately controlled and reliably stabilized, and the controllability, stability and accuracy of “the height position of the mounting piece 12 relative to the filter shell 20” and “the height position of the coupling piece 11 relative to the filter shell 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 applying the capacitive coupling assembly 10, and reducing the failure rate and debugging cost of the filter applying the capacitive coupling assembly 10.

[0102] It should be noted that, in the case of "the connecting portion 122 includes a plug-in section 1221 and a first buckle section 1222 connected to the plug-in section 1221 away from the buckle portion 121, the plug-in section 1221 is transitionally or interference-fitted with the connecting hole 2111, and the outer periphery of the first buckle section 1222 is provided with a first buckle protrusion 12221 buckled to the side of the limiting protrusion 21111 away from the hole of the connecting hole 2111", the "the mounting piece 12 includes a stop portion 123 connected between the buckle portion 121 and the connecting portion 122, and the stop portion 123 is stopped at the hole of the connecting hole 2111" embodiment, the "the connecting portion 122 abuts against the hole bottom of the connecting hole 2111" embodiment, and the "the connecting portion 122 includes a first stop table 1223 connected between the plug-in section 1221 and the first buckle section 1222, and the first stop table 1223 is stopped at the side of the limiting protrusion 21111 close to the hole of the connecting hole 2111" embodiment can be set alternatively, can be set in combination of two, or can be set comprehensively. For example, as shown in Figure 3 、 Figure 4 in some embodiments, the mounting piece 12 includes the stop portion 123, and the connecting portion 122 includes the first stop table 1223, wherein the stop portion 123 is stopped at the hole of the connecting hole 2111, and the first stop table 1223 can be stopped at the side of the limiting protrusion 21111 close to the hole of the connecting hole 2111, or can be spaced from the side of the limiting protrusion 21111 close to the hole of the connecting hole 2111 due to errors.

[0103] In the case of "the connecting portion 122 is in a columnar shape and is interference-fitted with the connecting hole 2111", the "the mounting piece 12 includes a stop portion 123 connected between the buckle portion 121 and the connecting portion 122, and the stop portion 123 is stopped at the hole of the connecting hole 2111" embodiment, and the "the connecting portion 122 abuts against the hole bottom of the connecting hole 2111" embodiment can be set alternatively or in combination.

[0104] Please refer to Figure 2 、 Figure 3 、 Figure 4 In some embodiments of the present application, the buckle portion 121 includes a second buckle section 1211 and a second stop table 1212 connected to the second buckle section 1211 close to the connecting portion 122, the second stop table 1212 is stopped at the side hole of the mounting hole 111, and the outer periphery of the second buckle section 1211 is provided with a second buckle protrusion 12111 buckled to the other side hole of the mounting hole 111.

[0105] It should be noted that the buckle part 121 includes a second buckle segment 1211 and a second stop table 1212, and the second stop table 1212 and the second buckle segment 1211 are sequentially arranged and integrally connected in a direction away from the connecting part 122. Among them, the form of the second stop table 1212 can be set as needed, for example, it can be prismatic, cylindrical, prismatic, circular, stepped and the like.

[0106] The outer periphery of the second buckle segment 1211 is provided with a second buckle protrusion 12111, which is outwardly protruding relative to the outer peripheral wall of the second buckle segment 1211, and the second buckle protrusion 12111 and the second stop table 1212 are arranged in the axial direction of the mounting piece 12. The second buckle segment 1211 is arranged in the mounting hole 111 until the second buckle protrusion 12111 passes out of the mounting hole 111 and buckles on one side of the hole of the mounting hole 111. The second stop table 1212 is stopped on the other side of the hole of the mounting hole 111. That is, the second buckle protrusion 12111 and the second stop table 1212 are respectively stopped on the opposite two side hole flanks of the mounting hole 111. Based on this, the buckle part 121 can be buckled and matched with the mounting hole 111 through the second buckle protrusion 12111 of the second buckle segment 1211, and the coupling piece 11 is axially limited between the second buckle protrusion 12111 and the second stop table 1212, so as to stabilize the installation position and installation state of the coupling piece 11, especially the height position of the coupling piece 11 in the axial direction of the mounting piece 12.

[0107] By adopting the above scheme, the buckle part 121 can be buckled and matched with the mounting hole 111 through the second buckle protrusion 12111 of the second buckle segment 1211, and the coupling piece 11 is axially limited between the second buckle protrusion 12111 and the second stop table 1212, so as to stabilize the installation position and installation state of the coupling piece 11, especially the height position of the coupling piece 11 in the axial direction of the mounting piece 12. Based on this, the buckle part 121 can support and fix the coupling piece 11 with a simplified and optimized structure, and can improve the controllability and stability of the height position of the coupling piece 11 in the axial direction of the mounting piece 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.

[0108] Of course, in other embodiments, the outer periphery of the second buckle segment 1211 can be provided with two second buckle protrusions 12111, which are arranged in the axial direction of the mounting piece 12, the second buckle segment 1211 is arranged in the mounting hole 111, and the two second buckle protrusions 12111 are respectively buckled on the two side hole flanks of the mounting hole 111, so as to axially limit the coupling piece 11 between the two second buckle protrusions 12111, and stabilize the installation position and installation state of the coupling piece 11, especially the height position of the coupling piece 11 in the axial direction of the buckle part 121.

[0109] Please refer to Figure 2 、 Figure 3 、 Figure 4 In some embodiments of the present application, the second clamping section 1211 is provided with a second cut-off groove 12112, the extension direction of the second cut-off groove 12112 is perpendicular to the axial direction of the mounting member 12, the second cut-off groove 12112 is provided through along the extension direction thereof, the groove depth direction of the second cut-off groove 12112 is parallel to the axial direction of the mounting member 12, and the second cut-off groove 12112 passes through the second clamping protrusion 12111 along the groove depth direction thereof.

[0110] It should be noted that the second clamping section 1211 is provided with at least one second cut-off groove 12112. The extension direction of the second cut-off groove 12112 is perpendicular to the axial direction of the mounting member 12, for example, the extension direction of the second cut-off groove 12112 can coincide with any radial direction of the second clamping section 1211 (i.e., the extension direction of the second cut-off groove 12112 can pass through the central axis L of the mounting member 12 and be perpendicular to the central axis L of the mounting member 12), for another example, the extension direction of the second cut-off groove 12112 can be parallel to but not coincide with any radial direction of the second clamping section 1211 (i.e., the extension direction of the second cut-off groove 12112 does not pass through the central axis L of the mounting member 12 but is perpendicular to the central axis L of the mounting member 12). The groove depth direction of the second cut-off groove 12112 is perpendicular to the extension direction of the second cut-off groove 12112 and parallel to the axial direction of the mounting member 12.

[0111] The second cut-off groove 12112 is provided through along the extension direction thereof, and the second cut-off groove 12112 passes through the second clamping protrusion 12111 along the groove depth direction thereof, so that the second cut-off groove 12112 can cut off the complete continuity of the second clamping section 1211, especially the second clamping protrusion 12111, in the circumferential direction, can provide a deformation space for the second clamping section 1211, especially the second clamping protrusion 12111, can reduce the deformation resistance of the second clamping section 1211, especially the second clamping protrusion 12111, and can optimize the elastic deformation capability of the second clamping section 1211, especially the second clamping protrusion 12111. Based on this, in the assembly process of the second clamping section 1211 penetrating the mounting hole 111, the second clamping section 1211, especially the second clamping protrusion 12111, can adaptively produce elastic contraction deformation, so as to facilitate the second clamping section 1211 to quickly and smoothly penetrate the mounting hole 111, especially the second clamping protrusion 12111 to quickly and smoothly penetrate from one side of the mounting hole 111 to the other side of the mounting hole 111; after the second clamping protrusion 12111 penetrates the mounting hole 111, the second clamping section 1211, especially the second clamping protrusion 12111, can quickly and automatically recover the elastic deformation, so as to facilitate the second clamping protrusion 12111 to be clamped to the hole edge of the mounting hole 111 away from the second stop table 1212.

[0112] By adopting the above scheme, the complete continuity of the second buckle segment 1211, especially the second buckle protrusion 12111, in the circumferential direction can be interrupted by the second interruption groove 12112, and the deformation space is provided for the second buckle segment 1211, especially the second buckle protrusion 12111, so as to reduce the deformation resistance of the second buckle segment 1211, especially the second buckle protrusion 12111, and optimize the elastic deformation capability of the second buckle segment 1211, especially the second buckle protrusion 12111. Based on this, in the assembly process of the second buckle segment 1211 penetrating the mounting hole 111, the second buckle segment 1211, especially the second buckle protrusion 12111, can be elastically deformed by contraction when passing through the mounting hole 111, so that the second buckle segment 1211 can be quickly and smoothly penetrated in the mounting hole 111, and the second buckle protrusion 12111 can be quickly and smoothly penetrated from one side of the mounting hole 111 to the other side of the mounting hole 111 by a smaller force, so that the assembly convenience and efficiency between the mounting piece 12 and the coupling piece 11 can be improved. After the second buckle protrusion 12111 penetrates the mounting hole 111, the second buckle segment 1211, especially the second buckle protrusion 12111, can quickly and automatically recover the elastic deformation, so that the second buckle protrusion 12111 can be reliably buckled on the hole edge of the mounting hole 111 away from the second stop table 1212, and the assembly reliability and connection reliability between the mounting piece 12 and the coupling piece 11 can be maintained and improved.

[0113] Please refer to Figure 2 、 Figure 3 、 Figure 4 In some embodiments of the present application, the second interruption groove 12112 is arranged on the end face of the second buckle segment 1211 close to the second stop table 1212.

[0114] It should be noted that the second interruption groove 12112 is arranged on the end face of the second buckle segment 1211 close to the second stop table 1212, that is, in the groove depth direction of the second interruption groove 12112, the groove opening of the second interruption groove 12112 is arranged on the end face of the second buckle segment 1211 close to the second stop table 1212, and the groove bottom of the second interruption groove 12112 is closed.

[0115] By adopting the above scheme, by opening the second cut-off groove 12112 on the end face of the second buckle segment 1211 close to the second stop table 1212, the notch of the second cut-off groove 12112 can be arranged on the end face of the second buckle segment 1211 close to the second stop table 1212, and not communicated to the end face of the second buckle segment 1211 away from the second stop table 1212, so that the second cut-off groove 12112 can form a limited cut on the axial direction of the second buckle segment 1211. Based on this, on the one hand, the second cut-off groove 12112 can provide sufficient space for the deformation of the second buckle segment 1211, especially the second buckle protrusion 12111, so that the second buckle segment 1211, especially the second buckle protrusion 12111, can flexibly adapt to the elastic shrinkage deformation of the installation hole 111 wall, so that the second buckle protrusion 12111 can smoothly pass through the installation hole 111, and then quickly recover the original shape to be tightly buckled on the hole edge of the installation 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 second cut-off groove 12112 is not communicated to the end face of the second buckle segment 1211 away from the second stop table 1212, it is beneficial to maintain the structural strength of the area of the second buckle segment 1211 away from the second stop table 1212, thereby improving the structural reliability, use reliability and service life of the mounting piece 12 and the capacitive coupling assembly 10.

[0116] Please refer to Figure 9 、 Figure 10 、 Figure 11 In some embodiments of the present application, two second cut-off grooves 12112 are provided, and the two second cut-off grooves 12112 are symmetrically distributed about the central axis L of the mounting piece 12.

[0117] It should be noted that, on the basis of the above embodiment, that is, on the basis that the second cut-off groove 12112 is opened on the end face of the second buckle segment 1211 close to the second stop table 1212, two second cut-off grooves 12112 are provided, and the two second cut-off grooves 12112 are arranged in parallel and spaced apart, and are arranged on opposite sides of the central axis L of the mounting piece 12, and are symmetrically distributed about the central axis L of the mounting piece 12.

[0118] By adopting the above scheme, the second buckle segment 1211 can be caused to produce balanced deformation when subjected to external force through the two symmetrically distributed second truncated grooves 12112, thereby helping the second buckle segment 1211, especially the second buckle protrusion 12111, 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 second buckle segment 1211 can be caused to uniformly disperse stress when subjected to force through the two symmetrically distributed second truncated grooves 12112, thereby improving the carrying capacity, use reliability and service life of the second buckle segment 1211.

[0119] Of course, in other embodiments, the number and position of the second truncated grooves 12112 can be flexibly set, for example, the second truncated grooves 12112 can be provided only one, and for example, the second truncated grooves 12112 can be provided two but the two second truncated grooves 12112 are asymmetrically distributed, and the like.

[0120] Please refer to Figure 2 , Figure 3 In some embodiments of the present application, the second truncated groove 12112 is opened at the end face of the second buckle segment 1211 away from the second stop table 1212.

[0121] It should be noted that the second truncated groove 12112 is opened at the end face of the second buckle segment 1211 away from the second stop table 1212, that is, in the groove depth direction of the second truncated groove 12112, the groove opening of the second truncated groove 12112 is provided at the end face of the second buckle segment 1211 away from the second stop table 1212, and the groove bottom of the second truncated groove 12112 is closed.

[0122] By adopting the above scheme, by opening the second cut-off groove 12112 on the end face of the second buckle segment 1211 away from the second stop table 1212, the slot of the second cut-off groove 12112 can be arranged on the end face of the second buckle segment 1211 away from the second stop table 1212, and not communicated to the end face of the second buckle segment 1211 close to the second stop table 1212. Based on this, on the one hand, during the assembly process of the second buckle segment 1211 penetrating into the mounting hole 111, the end of the second buckle segment 1211 away from the second stop table 1212 and the second buckle protrusion 12111 can quickly, flexibly and easily adapt to the extrusion of the hole wall of the mounting hole 111 to deform elastically as needed, so that the second buckle protrusion 12111 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 second cut-off groove 12112 is not communicated to the end face of the second buckle segment 1211 close to the second stop table 1212, it is beneficial to maintain the structural strength of the area of the second buckle segment 1211 close to the second stop table 1212, 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 second cut-off groove 12112 is arranged on the end face of the second buckle segment 1211 away from the second stop table 1212, it is convenient to process the second cut-off groove 12112 from the side of the second buckle segment 1211 away from the second stop table 1212, thereby improving the processing convenience and efficiency of the second cut-off groove 12112.

[0123] Please refer to Figure 2 In some embodiments of the present application, the second cut-off groove 12112 is opened on the outer circumferential surface of the buckle part 121, and the opposite sides of the second cut-off groove 12112 along the groove depth direction are closed.

[0124] It should be noted that the second cut-off groove 12112 is opened on the outer circumferential surface of the buckle part 121. Along the groove depth direction of the second cut-off groove 12112, the opposite sides of the second cut-off groove 12112 are closed and not communicated to the outside of the buckle part 121. In this case, the second cut-off groove 12112 is similar to a through hole structure. For example, the cross-sectional shape of the second cut-off groove 12112 perpendicular to the extension direction thereof can be a waist type, a rectangular shape, an oval shape or other shapes.

[0125] By adopting the above scheme, on the one hand, although the two sides of the second cut-off groove 12112 in the groove depth direction are closed, the second cut-off groove 12112 can still provide the necessary deformation space for the second buckle segment 1211 and the second buckle protrusion 12111 thereof, so that the second buckle segment 1211 and the second buckle protrusion 12111 thereof can flexibly adapt to the mounting hole 111 (please refer to Figure 3 ,Figure 4 ) the extrusion of the hole wall to perform necessary elastic shrinkage deformation, also facilitates the second buckle protrusion 12111 to pass through the mounting hole 111 smoothly, and then quickly restore the original shape to be tightly buckled on the hole edge of the mounting hole 111, so as to improve the connection convenience, connection reliability between the mounting piece 12 and the coupling piece 11. On the one hand, since the second cut-off groove 12112 does not damage the end face of the second buckle section 1211 away from the second stop table 1212, nor does it damage the end face of the second stop table 1212 away from the second buckle section 1211, it is helpful to maintain the overall structural strength of the buckle part 121, so as to improve 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 second cut-off groove 12112 is similar to the through hole structure, it is helpful to process and form the second cut-off groove 12112 along the extension direction of the second cut-off groove 12112, so as to improve the processing convenience, processing efficiency of the second cut-off groove 12112.

[0126] Please refer to Figure 2 , Figure 3 , ​ In some embodiments of the present application, the outer peripheral surface of the second buckle section 1211 has a second guide taper surface 12113, which is located on the side of the second buckle protrusion 12111 away from the second stop table 1212, and the radial dimension of the second guide taper surface 12113 is tapered in the direction away from the second buckle protrusion 12111.

[0127] It should be noted that at least part of the outer peripheral surface of the second buckle section 1211 is the second guide taper surface 12113. The second guide taper surface 12113 is located on the side of the second buckle protrusion 12111 away from the second stop table 1212, based on which, in the assembly process of the second buckle section 1211 penetrating into the mounting hole 111, the second guide taper surface 12113 will enter the mounting hole 111 before the second buckle protrusion 12111; and since the radial dimension of the second guide taper surface 12113 is tapered in the direction away from the second buckle protrusion 12111, the end of the second guide taper surface 12113 with smaller radial dimension will enter the mounting hole 111 before the end of the second guide taper surface 12113 with larger radial dimension, so as to achieve the effect of gradually guiding the second buckle section 1211 to enter the mounting hole 111.

[0128] By adopting the above scheme, in the assembly process of the second buckle section 1211 penetrating into the mounting hole 111, the second guide cone surface 12113, which is arranged in a tapered manner in a direction away from the second buckle protrusion 12111 in the radial dimension, can be used as a guide surface to guide the second buckle section 1211 and the second buckle protrusion 12111 to pass through the mounting hole 111 smoothly and smoothly away from the end of the second stop table 1212, thereby improving the assembly convenience and efficiency between the mounting piece 12 and the coupling piece 11.

[0129] Please refer to ​ 、 ​ Some embodiments of the present application provide a filter, including a filter housing 20, and a capacitive coupling assembly 10 provided by embodiments of the present application.

[0130] 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 realize the shielding function to prevent signal leakage. One side of the filter housing 20 is a first plate 21, and the plate on the side of the filter housing 20 opposite the first plate 21 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.

[0131] 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 establish the required coupling relationship. Among them, one end of the resonant rod 30 is connected and fixed 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 forms of resonant rod, etc.

[0132] The filter further includes a capacitive coupling assembly 10, which can be any capacitive coupling assembly 10 of the above 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.

[0133] By using the above scheme, the filter can construct the capacitive coupling relationship by applying the capacitive coupling assembly 10 provided by the embodiment of the application, improve the consistency, quality and yield of the filter, and reduce the failure rate and debugging cost of the filter.

[0134] The above is only optional embodiments of the present application and is not intended to limit the present application. Various modifications and changes can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the scope of claims of the present application.

Claims

1. A capacitive coupling component, disposed within a filter housing, the filter housing having a connection hole, the wall of the connection hole having a limiting protrusion, characterized in that, The capacitive coupling component includes: A coupling element, wherein the coupling element has a through mounting hole; The mounting component is an insulating component. The mounting component includes a snap-fit ​​part and a connecting part connected in sequence. The snap-fit ​​part passes through the mounting hole and is axially limited and engaged with the mounting hole. The connecting part is inserted into the connecting hole and is restricted from being dislodged from the connecting hole by the limiting protrusion.

2. The capacitive coupling component as described in claim 1, characterized in that, The connecting part includes a plug section and a first snap-fit ​​section connected to the plug section on the side away from the snap-fit ​​part. The plug section is transitionally fitted or interference-fitted with the connecting hole. The outer periphery of the first snap-fit ​​section is provided with a first snap-fit ​​protrusion, which snaps onto the side of the limiting protrusion away from the opening of the connecting hole.

3. The capacitive coupling component as described in claim 2, characterized in that, The first snap-fit ​​section is provided with a first cutting groove. The extension direction of the first cutting groove is perpendicular to the axial direction of the mounting component. The first cutting groove is provided through the first snap-fit ​​protrusion along its extension direction. The groove depth direction of the first cutting groove is parallel to the axial direction of the mounting component. The first cutting groove passes through the first snap-fit ​​protrusion along its groove depth direction.

4. The capacitive coupling component as described in claim 3, characterized in that, The first cutting groove is formed on the end face of the first snap-fit ​​section near the insertion section; And / or, there are two first cut-off slots, and the two first cut-off slots are symmetrically distributed about the central axis of the mounting component.

5. The capacitive coupling component as described in claim 2, characterized in that, The outer peripheral surface of the first snap-fit ​​segment has a first guide cone surface, which is located on the side of the first snap-fit ​​protrusion facing away from the insertion segment. The radial dimension of the first guide cone surface is gradually reduced in the direction away from the first snap-fit ​​protrusion.

6. The capacitive coupling component as claimed in claim 1, characterized in that, The connecting part is columnar and is interference-fitted with the connecting hole.

7. The capacitive coupling component as described in any one of claims 1-6, characterized in that, The mounting component includes a stop portion connected between the snap-fit ​​portion and the connecting portion, the stop portion stopping at the opening of the connecting hole; And / or, the connecting portion abuts against the bottom of the connecting hole.

8. The capacitive coupling component as described in any one of claims 2-5, characterized in that, The connecting part includes a first stop plate connecting the plug section and the first snap-fit ​​section, the first stop plate stopping on the side of the limiting protrusion near the opening of the connecting hole.

9. The capacitive coupling component as described in any one of claims 1-6, characterized in that, The latching part includes a second latching section and a second stop plate connected to the second latching section near the connecting part. The second stop plate stops at one side of the mounting hole. A second latching protrusion is provided on the outer periphery of the second latching section, and the second latching protrusion engages with the other side of the mounting hole.

10. The capacitive coupling component as claimed in claim 9, characterized in that, The second snap-fit ​​section is provided with a second cutting groove. The extension direction of the second cutting groove is perpendicular to the axial direction of the mounting component. The second cutting groove is provided through the second snap-fit ​​protrusion along its extension direction. The groove depth direction of the second cutting groove is parallel to the axial direction of the mounting component. The second cutting groove passes through the second snap-fit ​​protrusion along its groove depth direction.

11. The capacitive coupling component as claimed in claim 10, characterized in that, The second cutting groove is formed on the end face of the second snap-fit ​​section near the second stop plate; And / or, there are two second cut-off slots, which are symmetrically distributed about the central axis of the mounting component.

12. The capacitive coupling component as claimed in claim 10, characterized in that, The second cutting groove is formed on the end face of the second snap-fit ​​section away from the second stop; Alternatively, the second cutting groove is formed on the outer peripheral surface of the latching part, and the second cutting groove is closed on both sides along its depth direction.

13. The capacitive coupling component as claimed in claim 9, characterized in that, The outer peripheral surface of the second snap-fit ​​segment has a second guide cone surface, which is located on the side of the second snap-fit ​​protrusion facing away from the second stop platform. The radial dimension of the second guide cone surface is gradually reduced in the direction away from the second snap-fit ​​protrusion.

14. A filter, characterized in that, It includes a filter housing and a capacitive coupling assembly as described in any one of claims 1-13.

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