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 two coupling pieces, a fastening piece and a supporting piece, each coupling piece is provided with a coupling part and a fixing part, and the coupling parts of the two coupling pieces are oppositely arranged at an interval; the number of the fasteners is two, and the fasteners are metal pieces. The two fasteners fasten the fixing parts of the two coupling pieces to the filter shell respectively. At least one supporting piece is arranged and is an insulating piece, and the supporting pieces are connected with the coupling parts of the two coupling pieces respectively and supported between the two coupling parts. Based on the structure, the capacitive coupling assembly can realize capacitive coupling of the two resonance rods through the two coupling pieces, the risks of loosening, fracture and the like of the fastening piece can be reduced, the relative position, the relative state, the distance and the coupling area between the two coupling parts can be stabilized, the coupling effect and the coupling strength realized by the capacitive coupling assembly can be stabilized, and the reliability of the capacitive coupling assembly is improved. The reliability, the consistency and the usability of the capacitive coupling assembly 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 two coupling pieces and two non-metallic screws. The ends of the two coupling pieces facing away from each other are fastened to the filter housing by the non-metallic screws, so that the two coupling pieces are relatively fixed and not grounded. The ends of the two coupling pieces facing each other are arranged opposite to each other and parallel to each other, so as to form a coupling. The two coupling pieces are arranged between the two resonant rods and enable capacitive coupling of the two resonant rods.

[0003] However, the locking effect of the non-metallic screw is poor, and it is easy to loosen under the condition of small locking force, and it is also easy to break under the condition of large locking force, resulting in poor structural reliability and use reliability of the capacitive coupling assembly. CONTENT OF THE UTILITY MODEL

[0004] The capacitive coupling assembly provided by the embodiments of the application aims to solve the problem of poor structural reliability and use reliability of the existing capacitive coupling assembly.

[0005] To achieve the above-mentioned purpose, 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 capacitive coupling assembly comprises:

[0007] Two coupling pieces, the coupling piece having a coupling portion arranged close to the other coupling piece and a fixing portion opposite to the coupling portion, the coupling portions of the two coupling pieces being arranged opposite to each other and spaced apart;

[0008] Two fasteners, which are metal pieces, fasten the fixing portions of the two coupling pieces to the filter housing, respectively;

[0009] At least one support piece, which is an insulating piece, is connected to the coupling portions of the two coupling pieces and supported between the coupling portions.

[0010] In some embodiments, the coupling portion of the coupling piece is provided with a through hole corresponding to the support piece;

[0011] The support member comprises a support part, two penetrating parts and two buckle parts, the buckle parts, the penetrating parts, the support part, another penetrating part and another buckle part are sequentially connected along the axial direction of the support member, the two penetrating parts are respectively penetrated into the penetrating holes of the two coupling parts, the support part is supported between the two coupling parts, and the two buckle parts are respectively buckled on the sides of the two coupling parts away from the support part.

[0012] In some embodiments, the buckle part is provided with at least one truncated groove, the extension direction of the truncated groove is perpendicular to the axial direction of the support member, and the truncated groove is provided through along the extension direction thereof.

[0013] In some embodiments, the truncated groove is opened on the end face of the buckle part away from the support part.

[0014] In some embodiments, the at least one truncated groove is a first truncated groove, and the groove depth of the first truncated groove is greater than or equal to the axial length of the buckle part along the axial direction of the support member.

[0015] In some embodiments, the at least one truncated groove is a second truncated groove, and the groove depth of the second truncated groove is less than the axial length of the buckle part along the axial direction of the support member.

[0016] In some embodiments, the truncated groove is provided with two, and the extension directions of the two truncated grooves are perpendicular.

[0017] In some embodiments, the outer peripheral surface of the buckle part has a guide conical surface, and the radial dimension of the guide conical surface is gradually reduced in the direction away from the support part.

[0018] In some embodiments, the support member is provided with two support holes, and the two coupling parts are one-to-one penetrated into the two support holes.

[0019] In some embodiments, the coupling part is provided with a limiting protrusion on the side close to the fixed part, and the limiting protrusions of the two coupling parts are respectively limited and stopped on the opposite sides of the support member.

[0020] In a second aspect, a filter is provided, comprising a filter housing and the capacitive coupling assembly provided in the embodiments of the application.

[0021] The capacitive coupling assembly provided in the application has the following beneficial effects:

[0022] The capacitive coupling assembly provided in this application embodiment can secure the fixed portions of two coupling members to the filter housing using two fasteners. This grounds the fixed portions of the two coupling members relative to the filter housing, fixing the two coupling members relative to the filter housing and stabilizing their installation position and state. Alternatively, the coupling portions of the two coupling members can be arranged opposite each other and spaced apart, connected and supported between the two coupling portions by a support member. This allows the two coupling portions to be relatively fixed and insulated from each other via the support member, forming a stable coupling gap and coupling area. Therefore, the capacitive coupling assembly can achieve capacitive coupling of two resonant rods via two coupling members with an optimized, stable, and reliable structure. Furthermore, since the fasteners are metal components, they possess superior structural strength, rigidity, and fastening effect, making them suitable for various environments such as high and low temperatures, vibration, and transportation. This reduces the risk of fastener loosening or breakage, particularly under these conditions. It also improves the connection strength, stability, and reliability between the capacitive coupling component and the filter housing, enhancing the structural and operational reliability of the capacitive coupling component. Moreover, because the support connects and supports the two coupling parts, it helps reliably stabilize their relative position, state, and spacing. This reduces the risk of changes in the spacing and coupling area between the two coupling parts, mitigating the risk of deviations in the coupling effect and strength achieved by the capacitive coupling component from design requirements. It stabilizes the coupling effect and strength achieved by the capacitive coupling component, thereby improving its reliability, consistency, and usability. Ultimately, it enhances the reliability, consistency, quality, and yield of filters using this capacitive coupling component, reducing defect rates, testing costs, and debugging costs. Attached Figure Description

[0023] 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.

[0024] Figure 1 A partial top view of the filter structure provided in some embodiments of this application;

[0025] Figure 2 for Figure 1 The provided sectional view along AA;

[0026] Figure 3 for Figure 2A structural schematic view of the capacitive coupling assembly provided;

[0027] Figure 4 A structural schematic view of the capacitive coupling assembly provided; Figure 3 A structural schematic view of the capacitive coupling assembly provided;

[0028] Figure 5 A partial structural top view of the filter provided for another embodiment of the present application;

[0029] Figure 6 A structural schematic view of the capacitive coupling assembly provided; Figure 5 A sectional view along B-B provided;

[0030] Figure 7 A structural schematic view of the capacitive coupling assembly provided; Figure 6 A structural schematic view of the capacitive coupling assembly provided;

[0031] Figure 8 A structural schematic view of the capacitive coupling assembly provided; Figure 7 A structural schematic view of the capacitive coupling assembly provided.

[0032] In the drawings, various reference numbers refer to components having the same function in the various embodiments. The embodiments disclosed in the specification and drawings of the present application are only used to explain the present application and should not be used to limit the present application. Unless otherwise specified, all the embodiments and optional embodiments of the present application can be combined to form new technical solutions. Unless otherwise specified, all the technical features and optional technical features of the present application can be combined to form new technical solutions.

[0033] 10-capacitive coupling assembly, 11-coupling piece, 111-coupling part, 1111-through hole, 1112-limiting protrusion, 112-fixing part, 1121-fixing hole; 12-fastener, 121-head, 122-nail part; 13-supporting piece, 131-supporting part, 132-through part, 133-buckling part, 1331-truncated groove, 1331a-first truncated groove, 1331b-second truncated groove, 1332-guiding conical surface, L-central axis of the supporting piece, 134-supporting hole; 20-filter housing, 21-first plate piece, 211-boss, 2111-threaded hole; 30-resonant rod, 30a-first resonant rod, 30b-second resonant rod, 30c-third resonant rod. DETAILED DESCRIPTION

[0034] 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 combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and should not be used to limit the present application. Unless otherwise specified, all the embodiments and optional embodiments of the present application can be combined to form new technical solutions. Unless otherwise specified, all the technical features and optional technical features of the present application can be combined to form new technical solutions.

[0035] In the description of the present application, it needs to be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying 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 a limitation on the present application.

[0036] 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 the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise explicitly specified and limited.

[0037] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be broadly understood, 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 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.

[0038] 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.

[0039] In some cases, the filter includes a filter housing, a plurality of resonant rods arranged in the filter housing, and a capacitive coupling component arranged between two resonant rods. The capacitive coupling component includes two coupling sheets and two non-metal screws, the ends of the two coupling sheets facing away from each other are fastened to the filter housing by the non-metal screws, so that the two coupling sheets are relatively fixed and not grounded; the ends of the two coupling sheets facing each other are arranged opposite to each other and parallel to each other to form a coupling; the two coupling sheets are arranged between the two resonant rods and realize capacitive coupling of the two resonant rods.

[0040] However, the locking effect of the non-metallic screw is poor, and the non-metallic screw is prone to loosening when the locking force is small, and is prone to breaking when the locking force is large, resulting in poor structural reliability and use reliability of the capacitive coupling assembly. Especially, under different environments such as high and low temperature, vibration, transportation, etc., the coupling distance between the two coupling plates is prone to change due to loosening or breaking of the non-metallic screw, resulting in changes in the coupling effect and coupling strength of the capacitive coupling assembly, deviating from the design requirements, thereby resulting in poor reliability, consistency and quality of the filter product, and high failure rate, test cost and debugging cost of the filter product.

[0041] The embodiments provided in the present application will solve the above problems.

[0042] In order to illustrate the technical solutions provided in the present application, the following will be described in detail in combination with specific drawings and embodiments.

[0043] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 Some embodiments of the present application provide a capacitive coupling assembly 10 arranged in a filter housing 20. The capacitive coupling assembly 10 includes a coupling piece 11, a fastener 12 and a support piece 13. The coupling piece 11 is provided with two coupling pieces 11, the coupling piece 11 has a coupling part 111 arranged close to another coupling piece 11, and a fixing part 112 opposite to the coupling part 111, the coupling parts 111 of the two coupling pieces 11 are arranged opposite and spaced apart; the fastener 12 is provided with two metal pieces, and the two fasteners 12 respectively fasten the fixing parts 112 of the two coupling pieces 11 to the filter housing 20; the support piece 13 is provided with at least one insulating piece, and the support piece 13 is connected with the coupling parts 111 of the two coupling pieces 11 and supported between the two coupling parts 111.

[0044] 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 realize a shielding function to prevent signal leakage. In actual application scenarios, the filter can be placed in any posture. The shape, size, material, etc. of the filter housing 20 can be flexibly set as needed.

[0045] The filter further comprises a plurality of resonant rods 30 arranged in the filter housing 20. The plurality of resonant rods 30 are arranged as required and constructed to have a required coupling relationship. One end of the resonant rod 30 is connected and fixed to the wall of the filter housing 20. 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 made of other materials. The resonant rod 30 can be a hollow resonant rod or a solid resonant rod. The resonant rod 30 can have a resonant disc or not. The resonant disc can have a flange or not. The resonant rod 30 can be a circular rod, a polygonal rod, a special-shaped rod, a sheet-shaped resonant rod, a sheet metal resonant rod, or a resonant rod of other shapes, etc.

[0046] The capacitive coupling assembly 10 can be arranged between any two resonant rods 30 to enable capacitive coupling between the two resonant rods 30.

[0047] When 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. 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 not cascaded. For example, as shown in FIGS. 1 and 2, in a specific example of the filter, the filter housing 20 is provided with three resonant rods 30, which 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. 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. Figure 1 、 Figure 2

[0048] 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. The coupling between the two resonant rods 30 via the capacitive coupling assembly 10 is the coupling relationship in the main signal transmission path. That is, the coupling relationship between the two resonant rods 30 is cascaded.

[0049] ​It should be further noted that the capacitive coupling assembly 10 comprises two coupling members 11. The coupling member 11 is a metal member, or the coupling member 11 is a non-metal member with a metal layer on the surface. The coupling member 11 comprises a coupling portion 111 and a fixing portion 112, which are sequentially arranged and integrally connected along the extension direction of the coupling member 11. The fixing portions 112 of the two coupling members 11 are arranged close to the two resonant rods 30 respectively, and the coupling portions 111 of the two coupling members 11 are arranged close to each other (i.e., the coupling portion 111 of each coupling member 11 is arranged close to the other coupling member 11). The coupling portions 111 of the two coupling members 11 are oppositely arranged and spaced apart. Based on this, the coupling portions 111 of the two coupling members 11 can be coupled through the gap to form a capacitor, so that the two resonant rods 30 can be coupled through the two coupling members 11. The coupling portions 111 of the two coupling members 11 can be oppositely arranged and spaced apart in a direction perpendicular to the extension direction of the coupling member 11. The coupling portions 111 of the two coupling members 11 can be equally spaced apart (i.e., parallel spaced apart), or unequally spaced apart. By adjusting the spacing and / or coupling area between the coupling portions 111 of the two coupling members 11, the coupling effect and strength achieved by the capacitive coupling assembly 10 can be adjusted. The coupling member 11 can be in the form of, but is not limited to, a sheet, a rod, etc.

[0050] The capacitive coupling assembly 10 further comprises two fasteners 12. The two fasteners 12 are arranged one by one corresponding to the fixing portions 112 of the two coupling members 11, and the two fasteners 12 fasten the fixing portions 112 of the two coupling members 11 to the filter housing 20 respectively, so that the two coupling members 11 are fixed relative to the filter housing 20, and the mounting position and state of the two coupling members 11 relative to the filter housing 20 are stabilized. Moreover, the fastener 12 is a metal member, so that the structural strength and rigidity of the fastener 12 itself are better, and the fastening effect of the fastener 12 on the fixing portion 112 is better, thereby reducing the risk of loosening or breaking of the fastener 12, and improving the connection strength, stability and reliability between the capacitive coupling assembly 10 and the filter housing 20, and preliminarily improving the structural reliability and use reliability of the capacitive coupling assembly 10. The fastener 12 can be, but is not limited to, a screw, a pin, a rivet, etc.

[0051] The capacitive coupling assembly 10 further comprises at least one support member 13. In some embodiments, as shown in Figure 2 Figure 3 , the support member 13 is provided in plurality, and the plurality of support members 13 are arranged spaced apart along the extension direction of the coupling member 11. In other embodiments, as shown in Figure 5 Figure 6 , the support member 13 is provided in only one, and the support member 13 is centrally arranged between the fixing portions 112 of the two coupling members 11. ​​

[0052] The support member 13 is an insulating member, i.e., the support member 13 is made of an insulating material and has insulating properties, and the support member 13 can be a non-metal member, for example. The support member 13 is connected to the coupling portions 111 of the two coupling members 11, respectively, and the connection manner can be, but is not limited to, buckle connection, insertion, adhesion, etc. The support member 13 is supported between the two coupling portions 111, so that the two coupling portions 111 are relatively fixed and mutually insulated via the support member 13, so that the two coupling portions 111 can stably maintain the relative position, the relative state, and the spacing via the support member 13, thereby reducing the risk of changes in the spacing and the coupling area between the two coupling portions 111, reducing the risk of changes in the coupling effect and the coupling strength of the capacitive coupling assembly 10 deviating from the design requirements, and stabilizing the coupling effect and the coupling strength of the capacitive coupling assembly 10.

[0053] Based on the fact that the fastener 12 is a metal member, the fixed portions 112 of the coupling members 11 are grounded connected (i.e., conductively connected) to the filter housing 20 via the fastener 12, i.e., the fixed portions 112 of the coupling members 11 are grounded. Based on the fact that the support member 13 is an insulating member, the coupling portions 111 of the coupling members 11 are not grounded, i.e., the coupling portions 111 of the coupling members 11 are not grounded connected (i.e., not conductively connected, i.e., insulated) to the filter housing 20. Based on this, the coupling polarity of the coupling of the two resonant rods 30 via the two coupling members 11 is capacitive, i.e., the coupling of the two resonant rods 30 via the two coupling members 11 is capacitive coupling.

[0054] In summary, the capacitive coupling assembly 10 provided by the embodiments of the present application can fasten the fixed portions 112 of the two coupling members 11 to the filter housing 20 via the two fasteners 12, so that the fixed portions 112 of the two coupling members 11 are grounded connected to the filter housing 20 and the two coupling members 11 are fixed relative to the filter housing 20, thereby stabilizing the installation position and the installation state of the two coupling members 11 relative to the filter housing 20. The coupling portions 111 of the two coupling members 11 can be arranged opposite to and spaced from each other, and the support member 13 can be connected and supported between the two coupling portions 111, so that the two coupling portions 111 can be relatively fixed, mutually insulated, and have a stable coupling spacing and a coupling area via the support member 13. Thus, the capacitive coupling assembly 10 can realize capacitive coupling of the two resonant rods 30 via the two coupling members 11 in an optimized, stable, and reliable structure.

[0055] And, since the fastener 12 is a metal piece, the fastener 12 has better structural strength, rigidity and fastening effect, and can be applied to different environments such as high and low temperature, vibration, transportation, etc., thereby reducing the risk of loosening, breaking, etc. of the fastener 12, especially reducing the risk of loosening, breaking, etc. of the fastener 12 under different environments such as high and low temperature, vibration, transportation, etc., and improving the connection strength, connection stability and connection reliability between the capacitive coupling assembly 10 and the filter housing 20, and improving the structural reliability and use reliability of the capacitive coupling assembly 10. Again, since the support piece 13 is connected and supported between the two coupling parts 111, it helps to reliably and stably stabilize the relative position, relative state, spacing between the two coupling parts 111 via the support piece 13, thereby reducing the risk of changes in the spacing and coupling area between the two coupling parts 111, reducing the risk of changes in the coupling effect and coupling strength achieved by the capacitive coupling assembly 10 deviating from the design requirements, and stabilizing the coupling effect and coupling strength achieved by the capacitive coupling assembly 10, thereby improving the reliability, consistency and usability of the capacitive coupling assembly 10, and improving the reliability, consistency, quality and yield of the filter using the capacitive coupling assembly 10, and reducing the failure rate, test cost and debugging cost of the filter using the capacitive coupling assembly 10.

[0056] And, in the assembly process, the assembly between the coupling piece 11 and the support piece 13 can be performed outside the filter first to form a prefabricated assembly, and then the prefabricated assembly is fastened to the filter housing 20 via the fastener 12; and the fastener 12 of the present embodiment can be fixed using normal torque without the need for careful fixation using very small torque as the non-metallic screw of the existing capacitive coupling assembly; therefore, the assembly convenience, assembly efficiency and assembly reliability of the capacitive coupling assembly 10 can be improved, and it is especially suitable for assembly into a small-sized miniaturized filter with less space.

[0057] Please refer to Figure 2 , Figure 3 , Figure 4 In some embodiments of the present application, the coupling part 111 of the coupling piece 11 penetrates the through hole 1111 corresponding to the support piece 13; the support piece 13 includes a support part 131, two through parts 132 and two buckle parts 133, the buckle part 133, the through part 132, the support part 131, the other through part 132, the other buckle part 133 are connected in sequence along the axial direction of the support piece 13, the two through parts 132 are respectively threaded through the through holes 1111 of the two coupling parts 111, the support part 131 is supported between the two coupling parts 111, and the two buckle parts 133 are respectively buckled on the sides of the two coupling parts 111 away from the support part 131.

[0058] It should be noted that the coupling portions 111 of the two coupling members 11 are each provided with a through hole 1111 corresponding to the support member 13, the through hole 1111 is a through hole and is provided through the coupling portion 111, the through hole 1111 can be provided as a circular hole, a rectangular hole, etc. as needed, and the size of the through hole 1111 can be set as needed.

[0059] The support member 13 includes a support portion 131, two through portions 132, and two buckle portions 133, the buckle portion 133, the through portion 132, the support portion 131, the other through portion 132, and the other buckle portion 133 are sequentially arranged and connected along the axial direction of the support member 13. The axial direction of the support member 13 is the extension direction of the central axis L of the support member 13. Among them, the connection between the buckle portion 133 and the through portion 132 can be integral connection or separate connection, and the connection between the through portion 132 and the support portion 131 can be integral connection or separate connection. As shown in Figure 4 In some embodiments, the buckle portion 133, the through portion 132, the support portion 131, the other through portion 132, and the other buckle portion 133 are sequentially arranged and integrally connected along the axial direction of the support member 13, which can improve the processing convenience of the support member 13, reduce the number of parts and assembly procedures of the support member 13 itself, improve the assembly convenience and efficiency between the support member 13 and the coupling member 11, and improve the overall assembly convenience and efficiency of the capacitive coupling assembly 10.

[0060] In the support member 13, the support portion 131 abuts and supports between the two coupling portions 111, the two through portions 132 are respectively provided in the through holes 1111 of the two coupling portions 111, and the two buckle portions 133 are respectively buckled on the side away from the support portion 131 of the two coupling portions 111 (of the through holes 1111). Among them, the cooperation between the through portion 132 and the through hole 1111 can be interference fit or transition fit.

[0061] By adopting the above scheme, the support piece 13 can abut against and support the two coupling portions 111 through the support portion 131, can pass through the two coupling portions 111 through the two passing portions 132, and can be buckled to the sides of the two coupling portions 111 away from the support portion 131 through the two buckle portions 133. Based on this, the support piece 13 can be connected to the coupling portions 111 of the two coupling pieces 11 and supported between the coupling portions 111 in a simplified and optimized structure, and the assembly convenience, efficiency and reliability are better. Especially, along the circumferential direction of the support piece 13, the support piece 13 can limit the two coupling portions 111 relative to the support piece 13 in the plane through the cooperation between the passing portion 132 and the passing hole 1111, so as to maintain the relative arrangement and state of the two coupling portions 111, and reliably limit the mutual deviation of the two coupling portions 111, thereby reducing the risk of change of the coupling area between the two coupling portions 111. Along the axial direction of the support piece 13, the support piece 13 can axially limit each coupling portion 111 between the buckle portion 133 and the support portion 131, so as to limit the two coupling portions 111 relative to the support piece 13 in the axial direction, so as to stabilize the spacing between the two coupling portions 111, and reliably limit the axial movement of the two coupling portions 111 relative to the support piece 13, thereby reducing the risk of change of the coupling spacing between the two coupling portions 111. Thus, the connection convenience, reliability and stability between the support piece 13 and the two coupling portions 111 can be improved, the relative position, state, coupling spacing and coupling area between the two coupling portions 111 can be reliably stabilized by the support piece 13, the risk of change of the coupling spacing and coupling area between the two coupling portions 111 can be effectively reduced, the risk of change of the coupling effect and coupling strength of the capacitive coupling assembly 10 deviating from the design requirement can be effectively reduced, and the coupling effect and coupling strength of the capacitive coupling assembly 10 can be effectively stabilized, thereby improving the reliability, consistency and usability of the capacitive coupling assembly 10.

[0062] Of course, in other embodiments, the support piece 13 can adopt other structural designs. For example, in the case where the buckle portion 133 is separately connected with the passing portion 132, the buckle portion 133 can be changed to a non-buckling structure (for example, it can be changed to a stop portion, etc.) to axially limit the coupling portion 111 between the non-buckling structure and the support portion 131.

[0063] On the basis of the above embodiment, since the penetrating direction of the passing hole 1111 is substantially perpendicular to the extension direction of the coupling piece 11, in the case where only one passing hole 1111 is arranged, the coupling piece 11 can have a rotational degree of freedom in the axial direction of the support piece 13 relative to the passing hole 1111 (i.e., relative to the support piece 13), and the coupling piece 11 can have a rotational degree of freedom in the axial direction of the fastener 12. Based on this, please refer to Figure 2 ,Figure 3 、 Figure 4 In some embodiments of the present application, the support 13 is provided with a plurality of supports 13 which are arranged at intervals along the extension direction of the coupling member 11. By adopting the above scheme, the rotation of the two coupling members 11 can be cooperatively limited by the plurality of supports 13 arranged at intervals along the extension direction of the coupling member 11, and the two coupling members 11 can be collectively limited in the circumferential direction of the fastener 12, so as to improve the structural reliability and use reliability of the capacitive coupling assembly 10.

[0064] Please refer to Figure 2 、 Figure 3 、 Figure 4 In some embodiments of the present application, the buckle portion 133 is provided with at least one truncated groove 1331, and the extension direction of the truncated groove 1331 is perpendicular to the axial direction of the support 13, and the truncated groove 1331 is provided through along the extension direction thereof.

[0065] It should be noted that the buckle portion 133 is provided with at least one truncated groove 1331. The extension direction of the truncated groove 1331 is perpendicular to the axial direction of the support 13, for example, the extension direction of the truncated groove 1331 can coincide with any radial direction of the buckle portion 133 (i.e. the extension direction of the truncated groove 1331 can pass through the central axis L of the support 13 and be perpendicular to the central axis L of the support 13), for example, the extension direction of the truncated groove 1331 can be parallel to but not coincide with any radial direction of the buckle portion 133 (i.e. the extension direction of the truncated groove 1331 does not pass through the central axis L of the support 13 but is perpendicular to the central axis L of the support 13).

[0066] The truncated groove 1331 is provided through along the extension direction of the truncated groove 1331, so that the truncated groove 1331 can truncate the complete continuity of the buckle portion 133 in the circumferential direction, can provide a deformation space for the buckle portion 133, can reduce the deformation resistance of the buckle portion 133, and can optimize the elastic deformation capacity of the buckle portion 133. Based on this, during the assembly process of the buckle portion 133 through the penetrating hole 1111, the buckle portion 133 can adaptively produce elastic contraction deformation, so as to facilitate the buckle portion 133 to quickly and smoothly pass through the penetrating hole 1111; after the buckle portion 133 passes out of the penetrating hole 1111, the buckle portion 133 can quickly and automatically recover the elastic deformation, so as to facilitate the buckle portion 133 to be buckled to the hole edge on the side away from the support portion 131 of the penetrating hole 1111.

[0067] By adopting the above scheme, the complete continuity of the buckle portion 133 in the circumferential direction can be interrupted by the interruption groove 1331, and the deformation space of the buckle portion 133 is provided, so as to reduce the deformation resistance of the buckle portion 133 and optimize the elastic deformation capability of the buckle portion 133. Based on this, in the assembly process of the buckle portion 133 passing through the passing hole 1111, the buckle portion 133 can be elastically deformed to adaptively shrink when passing through the passing hole 1111, so that the buckle portion 133 can quickly and smoothly pass through the passing hole 1111 through smaller force, and the assembly convenience and efficiency between the support piece 13 and the coupling piece 11 can be improved. After the buckle portion 133 passes through the passing hole 1111, the buckle portion 133 can quickly and automatically recover the elastic deformation, so that the buckle portion 133 can be reliably buckled to the hole edge of the passing hole 1111 away from the support portion 131, and the assembly reliability and connection reliability between the support piece 13 and the coupling piece 11 can be maintained and improved.

[0068] Of course, in other embodiments, the buckle portion 133 can have a certain elastic deformation capability based on the material thereof, and in this case, the interruption groove 1331 can be omitted as needed.

[0069] Please refer to Figure 2 、 Figure 3 、 Figure 4 In some embodiments of the present application, the interruption groove 1331 is arranged at the end face of the buckle portion 133 away from the support portion 131.

[0070] It should be noted that the interruption groove 1331 is arranged at the end face of the buckle portion 133 away from the support portion 131, that is, the groove opening of the interruption groove 1331 is arranged at the end face of the buckle portion 133 away from the support portion 131, and the groove bottom of the interruption groove 1331 is closed. The groove depth direction of the interruption groove 1331 is perpendicular to the extension direction of the interruption groove 1331 and parallel to the axial direction of the support piece 13.

[0071] By adopting the above scheme, by opening the cut-off groove 1331 at the end face of the buckling portion 133 away from the support portion 131, the slot of the cut-off groove 1331 can be arranged at the end face of the buckling portion 133 away from the support portion 131. Based on this, on the one hand, in the assembly process of the buckling portion 133 penetrating into the penetrating hole 1111, the end of the buckling portion 133 away from the support portion 131 can quickly, flexibly and easily adapt to the necessary elastic shrinkage deformation of the extrusion of the hole wall of the penetrating hole 1111 when entering the penetrating hole 1111, so that the buckling portion 133 can smoothly pass through the penetrating hole 1111, and then quickly recover the original shape to be tightly buckled on the hole edge of the penetrating hole 1111, thereby improving the connection convenience and reliability between the support piece 13 and the coupling piece 11. On the other hand, since the slot of the cut-off groove 1331 is arranged at the end face of the buckling portion 133 away from the support portion 131, the cut-off groove 1331 can be conveniently machined from the side of the buckling portion 133 away from the support portion 131, thereby improving the machining convenience and efficiency of the cut-off groove 1331.

[0072] Of course, in other embodiments, the cut-off groove 1331 can be opened at the outer peripheral surface of the buckling portion 133; along the groove depth direction of the cut-off groove 1331, the opposite two sides of the cut-off groove 1331 are closed, or the side of the cut-off groove 1331 close to the support portion 131 is communicated to the outside of the buckling portion 133.

[0073] Please refer to Figure 2 , Figure 3 , Figure 4 In some embodiments of the present application, at least one cut-off groove 1331 is a first cut-off groove 1331a; along the axial direction of the support piece 13, the groove depth of the first cut-off groove 1331a is greater than or equal to the axial length of the buckling portion 133.

[0074] It should be noted that the at least one cut-off groove 1331 is a first cut-off groove 1331a. In some cases, along the axial direction of the support piece 13, the groove depth of the first cut-off groove 1331a is greater than the axial length of the buckling portion 133, that is, the first cut-off groove 1331a not only cuts off the complete continuity of the buckling portion 133 in the circumferential direction, but also cuts off the complete continuity of at least part of the penetrating portion 132 in the circumferential direction. In other cases, along the axial direction of the support piece 13, the groove depth of the first cut-off groove 1331a is equal to the axial length of the buckling portion 133, that is, the first cut-off groove 1331a cuts off the complete continuity of the buckling portion 133 in the circumferential direction. Wherein, the groove depth of the first cut-off groove 1331a is the size of the first cut-off groove 1331a in the groove depth direction, that is, the size of the first cut-off groove 1331a in the axial direction of the support piece 13.

[0075] By adopting the above scheme, the complete continuity of the buckle portion 133 in the circumferential direction can be interrupted by the first interruption groove 1331a, and even the complete continuity of at least part of the penetrating portion 132 in the circumferential direction can be interrupted. Based on this, the first interruption groove 1331a can provide a certain deformation space for the buckle portion 133 as a whole, effectively reduce the deformation resistance of the buckle portion 133 as a whole, and optimize the elastic deformation capability of the buckle portion 133 as a whole, so that the buckle portion 133 can pass through the penetrating hole 1111 quickly and smoothly, and the assembly convenience, assembly efficiency and assembly reliability between the supporting piece 13 and the coupling piece 11 can be improved.

[0076] Please refer to Figure 2 , Figure 3 , Figure 4 In some embodiments of the present application, the at least one interruption groove 1331 is a second interruption groove 1331b; the groove depth of the second interruption groove 1331b in the axial direction of the supporting piece 13 is less than the axial length of the buckle portion 133.

[0077] It should be noted that the at least one interruption groove 1331 is a second interruption groove 1331b. The groove depth of the second interruption groove 1331b in the axial direction of the supporting piece 13 is less than the axial length of the buckle portion 133, that is, the second interruption groove 1331b only interrupts the complete continuity of part of the buckle portion 133 in the circumferential direction.

[0078] By adopting the above scheme, the complete continuity of the buckle portion 133 in the circumferential direction can be interrupted by the first interruption groove 1331a, and even the complete continuity of at least part of the penetrating portion 132 in the circumferential direction can be interrupted. Based on this, the first interruption groove 1331a can provide a certain deformation space for the buckle portion 133 as a whole, effectively reduce the deformation resistance of the buckle portion 133 as a whole, and optimize the elastic deformation capability of the buckle portion 133 as a whole, so that the buckle portion 133 can pass through the penetrating hole 1111 quickly and smoothly, and the assembly convenience, assembly efficiency and assembly reliability between the supporting piece 13 and the coupling piece 11 can be improved.

[0079] It should be noted that the "at least one interruption groove 1331 is a first interruption groove 1331a; the groove depth of the first interruption groove 1331a in the axial direction of the supporting piece 13 is greater than or equal to the axial length of the buckle portion 133" embodiment and the "at least one interruption groove 1331 is a second interruption groove 1331b; the groove depth of the second interruption groove 1331b in the axial direction of the supporting piece 13 is less than the axial length of the buckle portion 133" embodiment can be set alternatively, or can be compatiblely set in the case that the interruption groove 1331 is provided with multiple.

[0080] Please refer to Figure 2 ,Figure 3 、 Figure 4 In some embodiments of the present application, two truncated grooves 1331 are provided, and the extension directions of the two truncated grooves 1331 are perpendicular to each other.

[0081] It should be noted that the two truncated grooves 1331 are provided, and the extension directions of the two truncated grooves 1331 are perpendicular to each other and intersect the central axis L of the support piece 13.

[0082] By adopting the above scheme, through the two truncated grooves 1331 that are perpendicular to each other, the buckle portion 133 can be caused to deform uniformly when subjected to external force, thereby facilitating the buckle portion 133 to smoothly pass through the through hole 1111, reducing assembly difficulties and damage caused by uneven deformation, and improving the connection convenience, connection efficiency and connection reliability between the support piece 13 and the coupling piece 11. Moreover, through the two truncated grooves 1331 that are perpendicular to each other, the buckle portion 133 can also be caused to uniformly disperse stress when subjected to force, thereby improving the carrying capacity, use reliability and service life of the buckle portion 133 and the support piece 13.

[0083] Of course, in other embodiments, the number and position of the truncated grooves 1331 can be flexibly set, for example, the truncated grooves 1331 can be provided only one, and for example, the truncated grooves 1331 can be provided two but the two truncated grooves 1331 are not provided perpendicularly, and the like.

[0084] Please refer to Figure 5 、 Figure 6 、 Figure 7 In some embodiments of the present application, the outer peripheral surface of the buckle portion 133 has a guide taper surface 1332, and the radial dimension of the guide taper surface 1332 is gradually reduced in the direction away from the support portion 131.

[0085] It should be noted that at least part of the outer peripheral surface of the buckle portion 133 is the guide taper surface 1332. The radial dimension of the guide taper surface 1332 is gradually reduced in the direction away from the support portion 131, based on which, in the assembly process of the buckle portion 133 passing into the through hole 1111, the end of the guide taper surface 1332 with smaller radial dimension will enter the through hole 1111 earlier than the end of the guide taper surface 1332 with larger radial dimension, thereby achieving the effect of gradually guiding the buckle portion 133 to enter the through hole 1111.

[0086] By adopting the above scheme, in the assembly process of the buckle part 133 penetrating the penetrating hole 1111, the guide cone surface 1332 with the radial dimension gradually reduced in the direction away from the support part 131 can be used as a guide surface to guide the one end of the buckle part 133 away from the support part 131 to pass through the penetrating hole 1111 smoothly, thereby gradually guiding the buckle part 133 to pass through the penetrating hole 1111 smoothly, and the assembly convenience and efficiency of the support part 13 and the coupling part 11 can be improved.

[0087] Please refer to Figure 8 、 Figure 6 、 Figure 7 、 Figure 8 In some embodiments of the present application, the support part 13 penetrates two support holes 134, and the two coupling parts 111 are one-to-one penetratingly arranged in the two support holes 134.

[0088] It should be noted that the support part 13 penetrates two support holes 134, and the two support holes 134 are one-to-one arranged with the coupling parts 111 of the two coupling parts 11, the penetrating direction of the support hole 134 corresponds to the extension direction of the coupling part 11, and the coupling parts 111 of the two coupling parts 11 are one-to-one penetratingly arranged in the two support holes 134. The cooperation between the coupling part 111 and the support hole 134 can be interference fit or transition fit.

[0089] By adopting the above scheme, the support part 13 can pass through the two support holes 134, and the coupling parts 111 of the two coupling parts 11 are one-to-one penetratingly arranged in the two support holes 134. Based on this, the support part 13 can be connected with the coupling parts 111 of the two coupling parts 11 respectively by a simplified and optimized structure, and supported between the coupling parts 111 through the solid part between the two support holes 134, and the movement of the coupling part 111 along the circumference of the support hole 134 is limited by the support hole 134. Therefore, the connection convenience, reliability and stability between the support part 13 and the two coupling parts 111 can be improved, the relative position, state, coupling distance and coupling area between the two coupling parts 111 can be reliably and stably stabilized by the support part 13, the risk of change of the coupling distance and coupling area between the two coupling parts 111 can be effectively reduced, the risk of change of the coupling effect and coupling strength of the capacitive coupling assembly 10 deviating from the design requirement can be effectively reduced, and the coupling effect and coupling strength of the capacitive coupling assembly 10 can be effectively stabilized, thereby the assembly convenience, efficiency, reliability, consistency and usability of the capacitive coupling assembly 10 can be improved.

[0090] And, since the through direction of the support hole 134 corresponds to the extension direction of the coupling member 11, the coupling member 11 does not have a rotational freedom in the axial direction of the support member 13 relative to the support hole 134 (i.e., relative to the support member 13), nor does it have a rotational freedom in the axial direction of the fastening member 12, based on which, in the present embodiment, the number of support members 13 can be only one, and only one support member 13 can achieve the limitation of the coupling member 11 in the circumferential direction of the fastening member 12, without the need to set multiple support members 13 to cooperate with each other to limit the rotation of the coupling member 11, which can reduce the number of parts, simplify the design complexity of the filter, and save the cost of parts.

[0091] Please refer to Figure 2 、 Figure 3 、 Figure 6 In some embodiments of the present application, the coupling portion 111 is provided with a limiting protrusion 1112 on the side close to the fixed portion 112, and the limiting protrusions 1112 of the two coupling portions 111 are respectively limited to stop on the opposite sides of the support member 13.

[0092] By adopting the above scheme, by providing each coupling portion 111 with a limiting protrusion 1112 on the side close to the fixed portion 112, in the assembly process of the coupling portion 111 passing through the support hole 134, the side of the coupling portion 111 away from the fixed portion 112 can gradually pass into the support hole 134 until the limiting protrusion 1112 is positioned and stopped on the corresponding side surface of the support member 13, achieving the positioning effect, thereby improving the assembly convenience, assembly efficiency, and assembly precision between the support member 13 and the coupling member 11. Moreover, the limiting protrusions 1112 of the two coupling portions 111 can be respectively limited to stop on the opposite sides of the support member 13, so that the support member 13 is limited between the limiting protrusions 1112 of the two coupling portions 111 to limit the bidirectional movement of the support member 13 in the extension direction of the coupling member 11 from causing any coupling portion 111 to come out of the support hole 134, thereby improving the assembly reliability between the support member 13 and the coupling member 11, facilitating the support member 13 to continuously and reliably stabilize the relative position, relative state, coupling distance, and coupling area between the two coupling portions 111, continuously and reliably stabilizing the coupling effect and coupling strength achieved by the capacitive coupling assembly 10 in different environments, and improving the overall structural reliability and use reliability of the capacitive coupling assembly 10.

[0093] Of course, in other embodiments, other manners can be adopted to limit the movement of the support 13 along the extension direction of the coupling member 11 after the support 13 is connected with the two coupling members 11 respectively; for example, the coupling portion 111 can be in interference fit with the support hole 134 to limit the movement of the support 13 along the extension direction of the coupling member 11 by interference friction; for another example, the coupling portion 111 can be adhesively fixed with the support hole 134 to limit the movement of the support 13 along the extension direction of the coupling member 11 after the support 13 is connected with the two coupling members 11 respectively; and the like.

[0094] Please refer to Figure 7 , Figure 2 , Figure 3 , Figure 6 In some embodiments of the present application, the fixing portion 112 of the coupling member 11 is provided with a fixing hole 1121 corresponding to the fastener 12; the fastener 12 comprises a head portion 121 and a nail portion 122 connected in sequence, the head portion 121 is stopped at one side of the fixing hole 1121, the nail portion 122 is provided in the fixing hole 1121 and is threadedly connected to the filter shell 20.

[0095] It should be noted that the fixing portion 112 of the two coupling members 11 is provided with the fixing hole 1121 corresponding to the fastener 12, the fixing hole 1121 is a through hole and is provided through the fixing portion 112, the fixing hole 1121 can be provided as a circular hole, a rectangular hole and the like as needed, and the size of the fixing hole 1121 can be set as needed.

[0096] The fastener 12 is a metal screw. The fastener 12 comprises the head portion 121 and the nail portion 122 connected in sequence along the axial direction of the fastener 12, the head portion 121 is stopped at one side hole along the fixing hole 1121, the nail portion 122 is provided in the fixing hole 1121, the outer peripheral surface of the nail portion 122 is provided with an external thread, and the nail portion 122 is threadedly connected to the threaded hole 2111 of the filter shell 20. Based on this, the fastener 12 can lock the fixing portion 112 to the filter shell 20, and can limit the fixing portion 112 between the head portion 121 of the fastener 12 and the filter shell 20.

[0097] By adopting the above scheme, the fastener 12 can be positioned and stopped at one side of the fixing hole 1121 through the head 121, and the nail part 122 can be threaded into the threaded hole 2111 of the filter shell 20 and be screwed to the threaded hole 2111, so as to conveniently and quickly lock the fixing part 112 to the filter shell 20 and firmly position the fixing part 112 between the head 121 of the fastener 12 and the filter shell 20. Based on this, the assembly convenience and efficiency among the coupling member 11, the fastener 12 and the filter shell 20 can be improved, so that the assembly convenience, efficiency and reliability of the capacitive coupling assembly 10 can be improved. Moreover, the coupling member 11 can be stably and reliably fixed relative to the filter shell 20, the installation position and state of the coupling member 11 relative to the filter shell 20 can be effectively stabilized, especially the height position of the coupling member 11 in the axial direction of the fastener 12 can be stabilized, so that the controllability and stability of the installation position and state of the coupling member 11 can be improved, the coupling effect and strength of the capacitive coupling assembly 10 can be conveniently stabilized, the coupling effect and strength of the capacitive coupling assembly 10 can be conveniently controlled to meet the design requirements, the reliability, consistency and usability of the capacitive coupling assembly 10 can be improved, the reliability, consistency, quality and yield of the filter using the capacitive coupling assembly 10 can be improved, and the failure rate, test cost and debugging cost of the filter using the capacitive coupling assembly 10 can be reduced.

[0098] As shown in Figure 7 , Figure 2 , Figure 6 , ​ indicates that, in some embodiments, the filter shell 20 has a first plate 21 for connecting with the capacitive coupling assembly 10, the first plate 21 protrudes a boss 211, the end face of the boss 211 is provided with a threaded hole 2111, and the nail part 122 of the fastener 12 can be screwed into the threaded hole 2111 of the boss 211. In this way, the height position of the coupling member 11 in the thickness direction of the first plate 21 can be conveniently raised, so that the controllability and stability of the installation position and state of the coupling member 11 can be improved, the coupling effect and strength of the capacitive coupling assembly 10 can be conveniently controlled to meet the design requirements; and the connection area, connection strength, connection reliability and connection stability between the fastener 12 and the first plate 21 can be conveniently improved, so that the assembly reliability between the capacitive coupling assembly 10 and the filter shell 20 can be improved. Of course, in other embodiments, the first plate 21 can be a flat plate structure, and the threaded hole 2111 can be provided on the plate face of the first plate 21.

[0099] Of course, in other embodiments, the fastener 12 can be a pin, a rivet, etc.

[0100] Please refer to ​ , ​Some embodiments of the present application provide a filter, comprising a filter housing 20, and a capacitive coupling assembly 10 provided by embodiments of the present application.

[0101] It should be noted that the capacitive coupling assembly 10 can be applied to a filter product. The filter comprises 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. In actual application scenarios, the filter can be placed in any attitude. The shape, size, material, etc. of the filter housing 20 can be flexibly set as needed.

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

[0103] The filter further comprises a capacitive coupling assembly 10, which can be any capacitive coupling assembly 10 provided by 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.

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

[0105] The above is only an optional embodiment of the present application and is not intended to limit the present application. Those skilled in the art can make various changes and modifications to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the scope of the claims of the present application.

Claims

1. A capacitive coupling component, disposed within a filter housing, characterized in that, The capacitive coupling assembly comprises: two coupling members, each having a coupling portion arranged close to the other coupling member and a fixing portion opposite to the coupling portion, the coupling portions of the two coupling members being arranged opposite to each other and spaced apart; two fasteners, each being a metal member and fastening the fixing portion of the coupling member to the filter housing; at least one support member, each being an insulating member and connected to the coupling portion of the coupling member and supported between the coupling portions of the two coupling members.

2. The capacitive coupling assembly of claim 1, wherein, The coupling portion of the coupling member has a through hole corresponding to the support member. The support member comprises a support portion, two through portions and two buckle portions, the buckle portions, the through portions, the support portion, the other through portion and the other buckle portion being sequentially connected along the axial direction of the support member, the through portions being arranged through the through holes of the coupling portions, the support portion being supported between the coupling portions, and the buckle portions being buckled to the sides of the coupling portions away from the support portion.

3. The capacitive coupling assembly of claim 2, wherein, The buckle portion has at least one cut-off groove, the extension direction of the cut-off groove being perpendicular to the axial direction of the support member, and the cut-off groove being arranged through in the extension direction thereof.

4. The capacitive coupling assembly of claim 3, wherein, The cut-off groove is arranged at the end face of the buckle portion away from the support portion.

5. The capacitive coupling assembly of claim 3, wherein, At least one of the cut-off grooves is a first cut-off groove, the groove depth of the first cut-off groove being greater than or equal to the axial length of the buckle portion along the axial direction of the support member. At least one of the cut-off grooves is a second cut-off groove, the groove depth of the second cut-off groove being less than the axial length of the buckle portion along the axial direction of the support member.

6. The capacitive coupling assembly of claim 3, wherein, The support member has two cut-off grooves, the extension directions of the two cut-off grooves being perpendicular to each other.

7. The capacitive coupling assembly of claim 2, wherein, The outer peripheral surface of the buckle portion has a guide conical surface, the radial dimension of the guide conical surface being arranged tapered away from the support portion.

8. The capacitive coupling assembly of claim 1, wherein, The support member has two support holes, and the coupling portions are arranged one-to-one through the support holes.

9. The capacitive coupling assembly of claim 8, wherein, The coupling portion has a limiting protrusion arranged close to the fixing portion, and the limiting protrusions of the two coupling portions are limited and stopped on opposite sides of the support member, respectively.

10. A filter, characterized by, The filter housing and the capacitive coupling assembly according to any one of claims 1-9 are provided.

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