Filter

Abstract

The utility model relates to the field of communication, and provides a filter, which comprises a signal transmission end and a filtering component, and is characterized in that the signal transmission end is provided with an inner conductor; the filtering component is provided with an annular coupling part; the inner conductor comprises a first conductor section and a second conductor section which is connected to the first conductor section and is bent towards the filtering component, and the second conductor section is inserted into the coupling part and is in coupling connection with the coupling part. According to the filter, the second conductor section which is bent towards the filtering component is inserted into the annular coupling part, so that the first conductor section, the second conductor section and the coupling part are sequentially coupled and connected, the coupling connection between the inner conductor and the filtering component is realized, and the connection is convenient, rapid and convenient; moreover, the limitation of the internal space of the filter on the connection and assembly between the inner conductor and the filter component can be reduced, and the convenience and efficiency of the connection and assembly between the filter component and the inner conductor can be improved.

Description

Technical Field

[0001] This application belongs to the field of communication technologies, and particularly relates to a filter. Background Art

[0002] In some cases, a filter includes a filter housing, a signal transmission end inserted and installed in the filter housing, and filtering components disposed in the filter housing. The inner conductor of the signal transmission end extends linearly, and one end of the filtering component extends to the inner end of the inner conductor and is welded to the inner conductor. However, the assembly space between the inner end of the inner conductor and the corresponding inner wall of the filter housing is small, which is not convenient for connecting and assembling the filtering component and the inner conductor. Utility Model Content

[0003] An embodiment of this application provides a filter, aiming to solve the problem that the assembly space between the inner end of the inner conductor and the corresponding inner wall of the filter housing is small, which is not convenient for connecting and assembling the filtering component and the inner conductor.

[0004] To achieve the above object, the technical solution adopted in the embodiment of this application is: a filter, the filter includes:

[0005] A signal transmission end having an inner conductor;

[0006] Filtering components provided with an annular coupling portion; the inner conductor includes a first conductor segment and a second conductor segment connected to the first conductor segment and bent toward the filtering components, and the second conductor segment is inserted into the coupling portion and is coupled and connected to the coupling portion.

[0007] In some embodiments, the second conductor segment is integrally connected to the first conductor segment.

[0008] In some embodiments, the outer peripheral surface of the second conductor segment is spaced from the inner wall of the coupling portion;

[0009] Or, a dielectric sleeve is sleeved between the second conductor segment and the coupling portion.

[0010] In some embodiments, the coupling portion is a closed ring.

[0011] In some embodiments, the coupling portion is an open ring.

[0012] In some embodiments, the signal transmission end further includes a housing and an insulator. The housing is provided with a through hole, the insulator includes an insulating core and an insulating ring connected to one end of the insulating core. The insulating core is inserted and installed in the through hole, the insulating ring abuts against the orifice of the through hole, the first conductor segment is inserted and installed in the insulator, and both opposite ends of the first conductor segment protrude out of the insulator.

[0013] In some embodiments, the filter includes a filter housing, the filter housing includes a cavity and a cover plate covering the cavity, the cover plate is penetrated with a mounting hole, the outer housing is installed through the mounting hole, a limiting ring is convexly provided on the outer periphery of the outer housing, the limiting ring abuts against the outer orifice of the mounting hole, and the insulating ring abuts against the inner orifice of the mounting hole.

[0014] In some embodiments, the filter includes a filter housing, the filter housing includes a cavity and a cover plate covering the cavity, the cover plate is penetrated with a mounting hole, the outer housing is installed through the mounting hole, a limiting ring is convexly provided on the outer periphery of the outer housing, the limiting ring abuts against the inner orifice of the mounting hole, and a first step for supporting the limiting ring is provided on the inner wall of the cavity.

[0015] In some embodiments, the filter further includes a shielding member, the shielding member is sleeved on the outer periphery of the outer housing and is sealed between the limiting ring and the cover plate.

[0016] In some embodiments, a second step for supporting the insulating ring is provided on the inner wall of the cavity.

[0017] The beneficial effects of the filter provided by this application are as follows:

[0018] For the filter provided by the embodiments of this application, the inner conductor can be provided with a second conductor section bent towards the filtering component, and correspondingly, the filtering component can be provided with a coupling part close to the second conductor section and in a ring shape, so that by making the second conductor section and the coupling part be inserted and matched, the first conductor section, the second conductor section, and the coupling part are sequentially coupled and connected, thereby realizing the coupling connection between the inner conductor and the filtering component, and the connection is convenient, fast, and convenient. Moreover, since the connection and assembly between the inner conductor and the filtering component can be carried out along the extending direction of the coupling part of the filtering component, the limitation of the internal space of the filter on the connection and assembly between the inner conductor and the filtering component can be reduced, the convenience and efficiency of the connection and assembly between the filtering component and the inner conductor can be improved, and the assembly convenience and assembly efficiency of the filter can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to clearly illustrate the technical solutions in the embodiments of this application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of this application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained according to these drawings.

[0020] Figure 1 It is a schematic structural diagram of a filter provided by some embodiments of this application;

[0021] Figure 2 The top view of the provided filter; Figure 1 The sectional view taken along A-A of the provided filter, wherein the coupling part is in a closed ring shape, the main body part is in a rod shape, the limiting ring stops at the outer orifice of the mounting hole, and the insulating ring stops at the inner orifice of the mounting hole;

[0022] Figure 3 The exploded view of the provided filter; Figure 2 The sectional view of the filter provided in some other embodiments of the present application, wherein the coupling part is in an open ring shape, the main body part is in a sheet shape, the limiting ring stops at the outer orifice of the mounting hole, and the insulating ring stops at the inner orifice of the mounting hole;

[0023] Figure 4 The exploded view of the provided inner conductor, dielectric sleeve, and filtering component; Figure 3 The sectional view of the filter provided in some other embodiments of the present application, wherein the limiting ring stops at the inner orifice of the mounting hole, and the inner wall of the cavity is provided with a first step for supporting the limiting ring;

[0024] Figure 5 The exploded view of the provided filter.

[0025] Figure 6 Among them, the reference numerals in the figure: Figure 5 10 - signal transmission end, 11 - inner conductor, 111 - first conductor segment, 112 - second conductor segment, 12 - outer shell, 121 - through hole, 122 - limiting ring, 13 - insulator, 131 - insulating core, 132 - insulating ring; 20 - filtering component, 21 - main body part, 22 - coupling part; 30 - dielectric sleeve, 31 - dielectric cylinder, 32 - dielectric ring; 40 - filter housing, 41 - cavity, 411 - first step, 412 - second step, 42 - cover plate, 421 - mounting hole; 50 - shielding part.

[0026] Figure 7 Detailed embodiments

[0027] Figure 8 In order to make the technical problems, technical solutions, and beneficial effects to be solved by the present application clear and understandable, the present application will be described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application. Figure 7 The exploded view of the provided filter.

[0028] Among them, the reference numerals in the figure:

[0029] 10 - signal transmission end, 11 - inner conductor, 111 - first conductor segment, 112 - second conductor segment, 12 - outer shell, 121 - through hole, 122 - limiting ring, 13 - insulator, 131 - insulating core, 132 - insulating ring; 20 - filtering component, 21 - main body part, 22 - coupling part; 30 - dielectric sleeve, 31 - dielectric cylinder, 32 - dielectric ring; 40 - filter housing, 41 - cavity, 411 - first step, 412 - second step, 42 - cover plate, 421 - mounting hole; 50 - shielding part. Detailed embodiments

[0030] In order to make the technical problems, technical solutions, and beneficial effects to be solved by the present application clear and understandable, the present application will be described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0031] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0032] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, the meaning of "a plurality" is two or more, unless otherwise specifically defined.

[0033] In the present application, unless otherwise clearly specified and limited, the terms "mounted", "connected", "coupled", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0034] A filter generally includes a filter housing, a signal transmission terminal that is inserted and mounted in the filter housing and is used for inputting or outputting signals, and filter components disposed in the filter housing. The inner conductor of the signal transmission terminal extends linearly.

[0035] In some cases, one end of the filter component extends to the inner end of the inner conductor and is welded to the inner conductor, so that the filter component is coupled to the inner conductor of the signal transmission terminal, enabling the signal to be transmitted from the inner conductor of the signal transmission terminal to the filter component, or from the filter component to the inner conductor of the signal transmission terminal. However, the assembly space between the inner end of the inner conductor and the corresponding inner wall of the filter housing (i.e., the inner wall of the filter housing opposite to the inner end of the inner conductor) is small, which is not convenient for the connection and assembly of the filter component and the inner conductor.

[0036] In some other cases, the filtering component is a resonator, and a tapping component is connected to the filtering component. One end of the tapping component far from the filtering component extends to the inner end of the inner conductor and is welded to the inner conductor, so that the filtering component and the inner conductor of the signal transmission end are coupled through the tapping component, and the signal can be transmitted from the inner conductor of the signal transmission end to the filtering component through the tapping component, or can be transmitted from the filtering component to the inner conductor of the signal transmission end through the tapping component. However, on the one hand, the assembly space between the inner end of the inner conductor and the corresponding inner wall of the filter housing is small, which is not convenient for the connection and assembly of the tapping component and the inner conductor; on the other hand, the filtering component and the inner conductor of the signal transmission end need to be connected through the tapping component, resulting in a complex connection method, complicated connection components, and poor convenience for the coupling connection between the filtering component and the inner conductor.

[0037] Therefore, the embodiment of the present application provides a filter, which can facilitate the connection and assembly of the filtering component and the inner conductor. That is, it can facilitate the realization of the coupling connection between the filtering component and the inner conductor, and can improve the connection convenience between the filtering component and the inner conductor.

[0038] The following describes the specific implementation of the present application in detail in combination with specific embodiments:

[0039] Please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 Some embodiments of the present application provide a filter, which includes a signal transmission end 10 and a filtering component 20. The signal transmission end 10 has an inner conductor 11; the filtering component 20 is provided with an annular coupling portion 22; the inner conductor 11 includes a first conductor segment 111 and a second conductor segment 112 connected to the first conductor segment 111 and bent toward the filtering component 20. The second conductor segment 112 is inserted into the coupling portion 22 and is coupled to the coupling portion 22.

[0040] It should be noted that the signal transmission end 10 is a connector for connecting to external devices of the filter. The signal transmission end 10 can be a signal input end for inputting signals and energy, or a signal output end for outputting signals and energy. The signal transmission end 10 is provided with an inner conductor 11. The inner conductor 11 includes a first conductor segment 111 and a second conductor segment 112 connected in sequence. The first conductor segment 111 can extend linearly. One end of the first conductor segment 111 far from the second conductor segment 112 extends to the outside of the filter and is used to connect to external devices of the filter to realize the import or export of signals. One end of the second conductor segment 112 far from the first conductor segment 111 is arranged inside the filter and is used to be coupled to the filtering component 20 to realize the transmission of signals and energy between it and the filtering component 20.

[0041] Among them, the second conductor segment 112 is bent relative to the first conductor segment 111. As Figure 3 , Figure 4 shown, in some embodiments, the second conductor segment 112 is perpendicular to the first conductor segment 111, that is, the included angle between the second conductor segment 112 and the first conductor segment 111 is a right angle. Of course, in other embodiments, the included angle between the second conductor segment 112 and the first conductor segment 111 can be set as an acute angle or an obtuse angle as required.

[0042] Among them, the second conductor segment 112 can be integrally connected to the first conductor segment 111 or can be separately connected to the first conductor segment 111. In the case where the second conductor segment 112 is separately connected to the first conductor segment 111, the second conductor segment 112 and the first conductor segment 111 can be separately connected by, but not limited to, welding, fusing, threaded connection, etc.

[0043] It should also be noted that the filtering component 20 is a component in the filter for signal transmission or signal processing. For example, the filtering component 20 can be a tap structure, a low-pass structure, a resonator, etc. The filtering component 20 includes a main body portion 21 and a coupling portion 22. The coupling portion 22 is connected to the main body portion 21, and the coupling portion 22 is used for coupling connection with the second conductor segment 112 of the inner conductor 11. Among them, the main body portion 21 and the coupling portion 22 can be integrally connected or can be separately connected. In the case where the main body portion 21 and the coupling portion 22 are separately connected, the main body portion 21 and the coupling portion 22 can be separately connected by, but not limited to, welding, fusing, threaded connection, etc.

[0044] As Figure 3 , Figure 4 shown, in some embodiments, the filtering component 20 is a tap structure, the coupling portion 22 is connected to one end of the main body portion 21 close to the inner conductor 11, and the end of the main body portion 21 far from the coupling portion 22 is used for connecting components such as a low-pass structure, a resonator, etc., so as to realize the transmission of signals and energy between it and components such as a low-pass structure, a resonator. Among them, the main body portion 21 can be, but not limited to, in a rod shape (as Figure 3 , Figure 4 shown), a sheet shape (as Figure 5 , Figure 6 shown), etc.

[0045] It should also be noted that the coupling portion 22 is in a ring shape. The second conductor segment 112 is correspondingly arranged and aligned with the coupling portion 22. The second conductor segment 112 is inserted into the ring of the coupling portion 22 and is coupled to the coupling portion 22 (inductive coupling or capacitive coupling). Based on this, the first conductor segment 111, the second conductor segment 112, the coupling portion 22, and the main body portion 21 can be sequentially coupled, so as to realize the coupling connection between the inner conductor 11 and the filtering component 20, and the connection is convenient, fast, and convenient.

[0046] In summary, for the filter provided by the embodiment of the present application, the inner conductor 11 is provided with a second conductor segment 112 bent towards the filtering component 20, and correspondingly, the filtering component 20 is provided with a coupling portion 22 that is close to the second conductor segment 112 and is annular, so as to facilitate the insertion and cooperation of the second conductor segment 112 and the coupling portion 22, thereby promoting the coupling connection of the first conductor segment 111, the second conductor segment 112, and the coupling portion 22 in sequence, so as to realize the coupling connection between the inner conductor 11 and the filtering component 20, and the connection is convenient, fast, and convenient. Moreover, since the connection and assembly between the inner conductor 11 and the filtering component 20 can be carried out along the extending direction of the coupling portion 22, the limitation of the internal space of the filter on the connection and assembly between the inner conductor 11 and the filtering component 20 can be reduced, the convenience and efficiency of the connection and assembly between the filtering component 20 and the inner conductor 11 can be improved, and the assembly convenience and assembly efficiency of the filter can be improved.

[0047] In particular, when the filtering component 20 is a resonator, since the inner conductor 11 can be directly inserted into the coupling portion 22 of the filtering component 20 through the second conductor segment 112 bent towards the filtering component 20 to realize the coupling connection therebetween, a tap component for transfer can be omitted between the inner conductor 11 and the filtering component 20, thereby simplifying the connection method and connection components of the coupling connection between the inner conductor 11 and the filtering component 20 that is a resonator, and improving the convenience of the coupling connection between the inner conductor 11 and the filtering component 20 that is a resonator.

[0048] Please refer to Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 , in some embodiments of the present application, the second conductor segment 112 is integrally connected to the first conductor segment 111. That is, the second conductor segment 112 and the first conductor segment 111 are of an integrated structure, that is, the inner conductor 11 is of an integrally formed structure.

[0049] By adopting the above scheme, by integrally connecting the second conductor segment 112 to the first conductor segment 111, the assembly process between the second conductor segment 112 and the first conductor segment 111 can be simplified, the processing and forming convenience and connection strength between the second conductor segment 112 and the first conductor segment 111 can be improved, and the connection reliability between the second conductor segment 112 and the coupling portion 22 can be improved.

[0050] Of course, in other embodiments, the second conductor segment 112 and the first conductor segment 111 can be separately connected.

[0051] Please refer to Figure 3 、 Figure 4 、 Figure 5 、 Figure 6, in some embodiments of the present application, the outer peripheral surface of the second conductor segment 112 is spaced apart from the inner wall of the coupling portion 22.

[0052] By adopting the above solution, in the case where the second conductor segment 112 is inserted and cooperated with the coupling portion 22, by spacing the outer peripheral surface of the second conductor segment 112 from the inner wall of the coupling portion 22, it can be ensured that the medium between the outer peripheral surface of the second conductor segment 112 and the inner wall of the coupling portion 22 is air, so as to facilitate the formation of a capacitance between the second conductor segment 112 and the coupling portion 22, and facilitate the realization of stable and reliable capacitive coupling between the inner conductor 11 of the signal transmission end 10 and the filtering component 20.

[0053] Please refer to Figure 3 , Figure 4 , Figure 5 , Figure 6 , in some embodiments of the present application, a dielectric sleeve 30 is sleeved between the second conductor segment 112 and the coupling portion 22.

[0054] It should be noted that the dielectric sleeve 30 is made of an insulating material. The dielectric sleeve 30 is stably installed in the coupling portion 22. The second conductor segment 112 is inserted into the dielectric sleeve 30, so that the dielectric sleeve 30 is sleeved between the second conductor segment 112 and the coupling portion 22. The dielectric sleeve 30 is used to insulate the second conductor segment 112 from the coupling portion 22 and form an effective capacitance.

[0055] Among them, the dielectric constant of the dielectric sleeve 30 can be set according to the required effective dielectric constant and capacitance between the second conductor segment 112 and the coupling portion 22. The larger the dielectric constant of the dielectric sleeve 30, the larger the capacitance between the second conductor segment 112 and the coupling portion 22.

[0056] By adopting the above solution, in the case where the second conductor segment 112 is inserted and cooperated with the coupling portion 22, by sleeving the dielectric sleeve 30 between the second conductor segment 112 and the coupling portion 22, it can be ensured that the medium between the outer peripheral surface of the second conductor segment 112 and the inner wall of the coupling portion 22 is the dielectric sleeve 30, so as to facilitate the formation of a capacitance between the second conductor segment 112 and the coupling portion 22, and facilitate the realization of stable and reliable capacitive coupling between the second conductor segment 112 and the coupling portion 22. Moreover, based on the setting of the dielectric sleeve 30, it is also beneficial to make the relative state and relative position between the second conductor segment 112 and the coupling portion 22 stable, and can also form a reliable separation effect and insulation effect between the outer peripheral surface of the second conductor segment 112 and the inner wall of the coupling portion 22, and can effectively reduce the risk that the second conductor segment 112 shakes relative to the coupling portion 22 and contacts the inner wall of the coupling portion 22, thereby being beneficial to improving the reliability of the capacitive coupling between the inner conductor 11 and the filtering component 20.

[0057] Such as Figure 3 , Figure 4, Figure 5 , Figure 6 As shown in Figure 5 and Figure 6 , in some embodiments, the dielectric sleeve 30 includes a dielectric cylinder 31 and a dielectric ring 32. The dielectric cylinder 31 is sleeved between the second conductor segment 112 and the coupling portion 22. The dielectric ring 32 is connected to one end of the dielectric cylinder 31 extending out of the coupling portion 22 and extends outward in a circumferential direction of the dielectric cylinder 31 to form a ring shape. The dielectric ring 32 is used for abutting and cooperating with the ring mouth of the coupling portion 22. With such a setting, based on the abutting and cooperation between the dielectric ring 32 and the ring mouth of the coupling portion 22, the risk that the whole dielectric sleeve 30 shrinks into the coupling portion 22 can be reduced, and the installation position and installation state of the dielectric sleeve 30 relative to the coupling portion 22 can be stabilized. Thus, it is convenient to stabilize the dielectric sleeve 30 between the second conductor segment 112 and the coupling portion 22, and it is convenient for the dielectric sleeve 30 to stably and reliably play roles such as insulation and blocking.

[0058] Of course, in other embodiments, the outer peripheral surface of the second conductor segment 112 and the inner wall of the coupling portion 22 can be in abutting cooperation so that inductive coupling occurs between the second conductor segment 112 and the coupling portion 22.

[0059] Please refer to Figure 3 , Figure 4 , in some embodiments of the present application, the coupling portion 22 is in a closed ring shape. That is, the coupling portion 22 is complete and continuous along its circumferential direction.

[0060] By adopting the above scheme, by making the coupling portion 22 in a closed ring shape, on the one hand, it can promote the coupling portion 22 to be complete and continuous along its circumferential direction, thereby improving the structural strength and rigidity of the coupling portion 22 and improving the stability of the coupling connection between the coupling portion 22 and the second conductor segment 112; on the other hand, it can increase the coupling area between the coupling portion 22 and the second conductor segment 112, thereby improving the reliability of the coupling connection between the coupling portion 22 and the second conductor segment 112, improving the coupling reliability between the filtering component 20 and the inner conductor 11 of the signal transmission end 10, and ensuring the coupling strength between the inner conductor 11 and the filtering component 20.

[0061] Please refer to Figure 5 , Figure 6 , in some embodiments of the present application, the coupling portion 22 is in an open ring shape. That is, the coupling portion 22 has an opening, and the opening truncates the integrity and continuity of the coupling portion 22 in its own circumferential direction.

[0062] By adopting the above solution, by making the coupling part 22 in an open-ring shape, the coupling part 22 can have a certain deformable range. Based on this, on the one hand, it is convenient for the coupling part 22 to elastically deform adaptively during the process of inserting the second conductor segment 112 therein to reduce the insertion and mating resistance, thereby reducing the assembly resistance and assembly difficulty between the coupling part 22 and the second conductor segment 112, and improving the convenience and efficiency of the connection and assembly between the coupling part 22 and the second conductor segment 112; on the other hand, the coupling part 22 can adapt to the second conductor segment 112 with different radial dimensions or processing deviations, thereby improving the applicability and compatibility of the coupling part 22 and expanding the applicable range of the coupling part 22.

[0063] Moreover, by making the coupling part 22 in an open-ring shape, the coupling area between the coupling part 22 and the second conductor segment 112 can also be adjusted by adjusting the size of the opening to meet different coupling strength requirements. Based on this, the design flexibility of the coupling connection between the coupling part 22 and the second conductor segment 112 can be improved.

[0064] Please refer to Figure 3 、 Figure 4 , in some embodiments of the present application, the signal transmission end 10 further includes a housing 12 and an insulator 13. The housing 12 is penetrated with a through-hole 121. The insulator 13 includes an insulating core 131 and an insulating ring 132 connected to one end of the insulating core 131. The insulating core 131 is inserted and installed in the through-hole 121, and the insulating ring 132 abuts against the orifice of the through-hole 121. The first conductor segment 111 is inserted and installed in the insulator 13, and both opposite ends of the first conductor segment 111 protrude out of the insulator 13.

[0065] It should be noted that the housing 12 is penetrated with a through-hole 121, and the through-hole 121 can be used to install the insulator 13 and the inner conductor 11, and the housing 12 can be used to install, fix and protect the insulator 13 and the inner conductor 11.

[0066] The insulator 13 is a component made of insulating material. The insulator 13 includes an insulating core 131 and an insulating ring 132. The insulating core 131 is in a cylindrical shape and is inserted and installed in the through-hole 121. The outer cylindrical wall of the insulating core 131 abuts against the hole wall of the through-hole 121 to preliminarily stabilize the installation position and installation state of the insulator 13 relative to the housing 12. The insulating ring 132 is connected to one end of the insulating core 131 extending out of the through-hole 121 and extends outward in a ring shape along the circumference of the insulating core 131. The insulating ring 132 abuts against the corresponding orifice of the through-hole 121 to position and stabilize the installation position and installation state of the insulator 13 relative to the housing 12.

[0067] The first conductor segment 111 is installed through the insulator 13. The outer peripheral surface of the first conductor segment 111 abuts against the inner cylindrical wall of the insulating core 131 to stabilize the installation position and state of the first conductor segment 111 relative to the insulator 13. The insulator 13 is sleeved between the first conductor segment 111 and the outer shell 12. The insulator 13 provides fixation, support, and insulation for the first conductor segment 111. In particular, the insulator 13 insulates and blocks between the first conductor segment 111 and the outer shell 12.

[0068] Both opposite ends of the first conductor segment 111 penetrate through the insulator 13, facilitating the connection of the outer end of the first conductor segment 111 that penetrates through the insulator 13 to external devices of the filter, and also facilitating the connection of the inner end of the first conductor segment 111 that penetrates through the insulator 13 to the second conductor segment 112.

[0069] By adopting the above scheme, the signal transmission end 10 can facilitate the connection of the outer end of the first conductor segment 111 to external devices of the filter and the connection of the inner end of the first conductor segment 111 to the second conductor segment 112. On this basis, the outer shell 12 installs, fixes, and supports the insulator 13 and the inner conductor 11, and protects the insulator 13 and the inner conductor 11. The insulator 13 fixes and supports the first conductor segment 111 and insulates and blocks between the first conductor segment 111 and the outer shell 12. Based on this, the structure of the signal transmission end 10 can be simplified and optimized, and the structural reliability, use reliability, and service life of the signal transmission end 10 can be improved.

[0070] Please refer to Figure 3 、 Figure 4 In some embodiments of the present application, the filter includes a filter housing 40. The filter housing 40 includes a cavity 41 and a cover plate 42 covering the cavity 41. The cover plate 42 is provided with a mounting hole 421. The outer shell 12 is installed through the mounting hole 421. A limiting ring 122 protrudes from the outer periphery of the outer shell 12, and the limiting ring 122 stops at the outer orifice of the mounting hole 421, and an insulating ring 132 stops at the inner orifice of the mounting hole 421.

[0071] It should be noted that the filter housing 40 includes a cavity 41 and a cover plate 42. The cavity 41 is a metal part. The cavity 41 has an inner cavity. The cover plate 42 is a single-layer cover plate or a multi-layer cover plate. The cover plate 42 covers the cavity 41, and at least the layer plate of the cover plate 42 participating in covering the cavity 41 is a metal part. The filter housing 40 can achieve a shielding function to prevent signal leakage. The signal transmission end 10 is installed through the filter housing 40 to facilitate the connection of the inner conductor 11 of the signal transmission end 10 to external devices of the filter.

[0072] It should also be noted that the cover plate 42 is provided with a mounting hole 421 therethrough, and the mounting hole 421 communicates with the outside and the inside of the filter housing 40. The outer shell 12 of the signal transmission end 10 is inserted and installed in the mounting hole 421 to facilitate the connection of the signal transmission end 10 with external devices of the filter. The limiting ring 122 of the outer shell 12 is located outside the mounting hole 421 and abuts against the outer orifice of the mounting hole 421, and the insulating ring 132 of the insulator 13 is located inside the mounting hole 421 and abuts against the inner orifice of the mounting hole 421. The limiting ring 122 and the insulating ring 132 can jointly limit the axial movement of the signal transmission end 10 relative to the mounting hole 421, thereby stabilizing the mounting position and mounting state of the signal transmission end 10 relative to the mounting hole 421.

[0073] By adopting the above solution, the outer shell 12 of the signal transmission end 10 can be inserted and installed in the mounting hole 421 of the cover plate 42, so that the signal transmission end 10 is inserted and installed in the filter housing 40, facilitating the connection of the inner conductor 11 of the signal transmission end 10 with external devices of the filter. On this basis, the limiting ring 122 of the outer shell 12 can be made to abut against the outer orifice of the mounting hole 421, and the insulating ring 132 of the insulator 13 can be made to abut against the inner orifice of the mounting hole 421, so as to jointly limit the axial movement of the signal transmission end 10 relative to the mounting hole 421 through the limiting ring 122 and the insulating ring 132, and stabilize the mounting position and mounting state of the signal transmission end 10 relative to the mounting hole 421. Thus, the signal transmission end 10 can be conveniently, quickly and reliably inserted and installed in the filter housing 40, and the mounting stability of the signal transmission end 10 relative to the filter housing 40 can be improved.

[0074] As Figure 3 shown, in some embodiments, the insulating ring 132 of the insulator 13 abuts against the cover plate 42 and seals the gap between the mounting hole 421 and the outer shell 12. Based on this, the insulating ring 132 of the insulator 13 can play a sealing role, and the cover plate 42 can cover the cavity 41 more tightly, avoiding the occurrence of gaps after the cover plate 42 covers the cavity 41 and causing poor sealing, and the sealing component between the insulating ring 132 and the cover plate 42 can be omitted, which can simplify the structure of the filter.

[0075] Of course, in other embodiments, a sealing component can be provided between the insulating ring 132 and the cover plate 42 to seal the gap between the outer shell 12, the mounting hole 421 and the insulating ring 132.

[0076] Please refer to Figure 7 、 Figure 8, in some embodiments of the present application, the filter includes a filter housing 40, the filter housing 40 includes a cavity 41 and a cover plate 42 covering the cavity 41. The cover plate 42 is provided with a mounting hole 421 therethrough. The outer shell 12 is inserted and installed in the mounting hole 421. A limiting ring 122 is convexly provided on the outer periphery of the outer shell 12. The limiting ring 122 abuts against the inner hole opening of the mounting hole 421. A first step 411 for supporting the limiting ring 122 is provided on the inner wall of the cavity 41.

[0077] It should be noted that the filter housing 40 includes a cavity 41 and a cover plate 42. The cavity 41 is a metal part. The cavity 41 has an inner cavity. The cover plate 42 is a single-layer cover plate or a multi-layer cover plate. The cover plate 42 covers the cavity 41. At least the layer plate of the cover plate 42 participating in covering the cavity 41 is a metal part. The filter housing 40 can achieve a shielding function to prevent signal leakage. The signal transmission end 10 is inserted and installed in the filter housing 40 to facilitate the connection between the inner conductor 11 of the signal transmission end 10 and the external device of the filter. The filtering component 20 is arranged in the filter housing 40.

[0078] It should also be noted that the cover plate 42 is provided with a mounting hole 421 therethrough. The mounting hole 421 communicates with the outside and the inside of the filter housing 40. The outer shell 12 of the signal transmission end 10 is inserted and installed in the mounting hole 421 to facilitate the connection between the signal transmission end 10 and the external device of the filter.

[0079] A first step 411 is provided on the inner wall of the cavity 41. The limiting ring 122 of the outer shell 12 is placed on the first step 411. The first step 411 can support the limiting ring 122 of the outer shell 12. The limiting ring 122 of the outer shell 12 also abuts against the inner hole opening of the mounting hole 421 and is restricted from coming out of the mounting hole 421. Based on this, the limiting ring 122 of the outer shell 12 will be limited between the cover plate 42 and the first step 411, so as to relatively stably fix the installation position and installation state of the limiting ring 122 of the outer shell 12, and thus stably fix the installation position and installation state of the signal transmission end 10 relative to the mounting hole 421.

[0080] By adopting the above solution, the housing 12 of the signal transmission end 10 can be inserted and installed in the mounting hole 421 of the cover plate 42, so that the signal transmission end 10 is inserted and installed in the filter housing 40, facilitating the connection between the inner conductor 11 of the signal transmission end 10 and external devices of the filter. On this basis, the limit ring 122 of the housing 12 can be placed on the first step 411 of the cavity 41, and the limit ring 122 of the housing 12 can be stopped at the inner orifice of the mounting hole 421, so as to limit the limit ring 122 of the housing 12 between the cover plate 42 and the first step 411, and stabilize the installation position and installation state of the signal transmission end 10 relative to the mounting hole 421. Thus, the signal transmission end 10 can be conveniently, quickly and reliably inserted and installed in the filter housing 40, and the installation stability of the signal transmission end 10 relative to the filter housing 40 can be improved.

[0081] Please refer to Figure 7 、 Figure 8 In some embodiments of the present application, the filter further includes a shielding member 50, which is sleeved on the outer periphery of the housing 12 and sealed between the limit ring 122 and the cover plate 42. Among them, the shielding member 50 can be a component with electromagnetic shielding performance such as a conductive rubber ring, a metal shielding ring or a metal elastic ring.

[0082] It should be noted that the shielding member 50 is sleeved on the outer periphery of the housing 12. The shielding member 50 is arranged between the limit ring 122 and the cover plate 42, and the opposite sides of the shielding member 50 are respectively abutted against the limit ring 122 and the cover plate 42. The shielding member 50 can block the signal from leaking out through the gap between the housing 12, the mounting hole 421 and the limit ring 122.

[0083] By adopting the above solution, the shielding member 50 sleeved on the outer periphery of the housing 12 and abutted between the limit ring 122 and the cover plate 42 can be used to reduce the risk of signal leakage through the gap between the housing 12, the mounting hole 421 and the limit ring 122, thereby improving the shielding performance, reducing the risk of signal leakage and ensuring the stability of signal transmission.

[0084] Please refer to Figure 7 、 Figure 8 In some embodiments of the present application, a second step 412 for supporting the insulating ring 132 is provided on the inner wall of the cavity 41.

[0085] It should be noted that the second step 412 is provided on the inner wall of the cavity 41, and the insulating ring 132 of the insulator 13 is placed on the second step 412, and the second step 412 can support the whole signal transmission end 10.

[0086] By adopting the above solution, the insulating ring 132 of the insulator 13 can be placed on the second step 412 of the cavity 41 to enhance the supporting effect of the cavity 41 on the overall signal transmission end 10. Based on this, the installation position and installation state of the signal transmission end 10 relative to the cavity 41 can be stabilized, thereby improving the installation stability of the signal transmission end 10 relative to the filter housing 40.

[0087] Please refer to Figure 3 , Figure 4 , this embodiment is applicable not only to the embodiment where "the limiting ring 122 abuts against the inner orifice of the mounting hole 421 and the inner wall of the cavity 41 is provided with a first step 411 for supporting the limiting ring 122", but also to the embodiment where "the limiting ring 122 abuts against the outer orifice of the mounting hole 421 and the insulating ring 132 abuts against the inner orifice of the mounting hole 421".

[0088] In the case of the combined application of this embodiment and the embodiment where "the limiting ring 122 abuts against the outer orifice of the mounting hole 421 and the insulating ring 132 abuts against the inner orifice of the mounting hole 421", supporting the insulator 13 and the signal transmission end 10 via the second step 412 is also beneficial to reducing the force exerted by the signal transmission end 10 concentrated on the cover plate 42, thereby reducing the risk of stress concentration on the cover plate 42 and improving the service reliability and service life of the cover plate 42 and the filter housing 40.

[0089] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, or improvements made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A filter, characterized in that: The filter comprises: A signal transmission end having an inner conductor; The filter component is provided with a ring-shaped coupling portion; the inner conductor comprises a first conductor segment, and a second conductor segment connected to the first conductor segment and bent toward the filter component, the second conductor segment is inserted in the coupling portion and coupled to the coupling portion.

2. The filter according to claim 1, characterized in that The second conductor segment is integrally connected to the first conductor segment.

3. The filter according to claim 1, characterized in that The outer circumference of the second conductor segment is spaced apart from the inner wall of the coupling portion; Alternatively, a dielectric sleeve is provided between the second conductor segment and the coupling portion.

4. The filter according to claim 1, characterized in that The coupling portion is in a closed ring shape.

5. The filter according to claim 1, characterized in that The coupling portion is in an open ring shape.

6. The filter according to any one of claims 1 to 5, characterized in that The signal transmission end also includes a shell and an insulator, the shell is penetrated by a through hole, the insulator includes an insulating core and an insulating ring connected to one end of the insulating core, the insulating core is installed through the through hole, the insulating ring is stopped at the opening of the through hole, the first conductor segment is installed through the insulator, and the opposite ends of the first conductor segment both pass through the insulator.

7. The filter according to claim 6, characterized in that The filter comprises a filter housing, the filter housing comprises a cavity and a cover plate covering the cavity, the cover plate is penetrated with a mounting hole, the housing is penetrated and mounted in the mounting hole, a limiting ring is convexly provided on the outer periphery of the housing, the limiting ring is stopped at the outer opening of the mounting hole, and the insulating ring is stopped at the inner opening of the mounting hole.

8. The filter according to claim 6, characterized in that The filter comprises a filter housing, which comprises a cavity and a cover plate covering the cavity, the cover plate having a mounting hole extending therethrough, the housing being penetrated and mounted in the mounting hole, a limiting ring being convexly provided on the outer periphery of the housing, the limiting ring being stopped at the inner opening of the mounting hole, and the inner wall of the cavity being provided with a first step for supporting the limiting ring.

9. The filter according to claim 8, characterized in that The filter further comprises a shielding member, which is sleeved on the outer periphery of the shell and sealed between the limiting ring and the cover plate.

10. The filter according to claim 7 or 8, characterized in that The inner wall of the cavity is provided with a second step for supporting the insulating ring.

Images