Filtering assembly and filter

Abstract

The utility model provides a filtering assembly and a filter, and belongs to the technical field of communication. The filtering assembly comprises a first low-pass structure, a second low-pass structure and a connecting piece; the first low-pass structures and the second low-pass structures are arranged at intervals; the connecting piece is arranged at one end of the first low-pass structure in the first direction, one end of the connecting piece is connected with the first low-pass structure, and the other end of the connecting piece is connected with the second low-pass structure, so that a U-shaped low-pass structure is formed. According to the filtering assembly provided by the utility model, the first low-pass structure and the second low-pass structure are connected through the connecting piece to form the U-shaped low-pass structure, so that the low-pass structure is simplified, the material cost is reduced, the structure is simple, the size is small, the space is saved, and the production and processing are facilitated; therefore, the size of the filter employing the filtering assembly provided by the utility model is reduced.

Description

Technical Field

[0001] The utility model relates to the field of communication technologies, and particularly to a filtering component and a filter. Background Art

[0002] In the field of communication, especially in the field of radio frequency communication, cavity filters are widely used as a frequency selection device. The cavity filter selects effective communication signals to pass through, filters out high-frequency clutter or interference signals outside the communication signal frequency, and is widely used in information processing, data transmission, interference suppression, etc.

[0003] A low-pass filter (LC filter) is an electronic device that allows useful low-frequency signals to pass through and suppresses useless frequency signals. The low-pass filter includes a cavity, a connector, a main rod for transmitting signals and copper sheets, and a low-pass structure. The traditional low-pass structure includes a low-pass structure body, which includes a high-impedance section with a relatively thin diameter and a low-impedance section with a larger diameter. The low-pass structure body is assembled in an insulating tube arranged on the outer surface of the low-pass body. The low-pass structure is fixedly assembled into the upper slot of the cavity. Among them, the high-impedance section forms the inductance characteristic in the circuit, and the low-impedance section and the cavity wall are separated by an insulating sleeve to form a capacitance characteristic. By changing the length, diameter, and number of the low-impedance section and the high-impedance section, the inductance value and capacitance value of the low-pass are adjusted, and the frequency of the low-pass is changed to meet the index requirements.

[0004] In the traditional cavity filter, the low-pass structure body is assembled in the cavity slot. The center line of the low-pass structure is parallel to the bottom surface of the filter. The length of the low-pass structure will occupy the area of the filter, resulting in low space utilization of the filter. When the length and width of the cavity shape are fixed, the length setting of the low-pass structure body is very limited, and the length and width directions of the cavity cannot meet the assembly length requirements for the low-pass structure body. On the other hand, the assembly between the low-pass structure bodies is not tight, and the space of the cavity cannot be fully utilized. More low-pass structure bodies cannot be assembled in the same space. Content of the Utility Model

[0005] In view of this, the purpose of the present utility model is to overcome the deficiencies in the prior art and provide a filtering component and a filter.

[0006] In a first aspect, the present utility model provides a filtering component, including:

[0007] A first low-pass structure and a second low-pass structure, the first low-pass structure and the second low-pass structure are arranged at intervals;

[0008] A connecting piece, arranged at one end of the first low-pass structure along a first direction, one end of the connecting piece is connected to the first low-pass structure, and the other end of the connecting piece is connected to the second low-pass structure to form a U-shaped low-pass structure.

[0009] In some embodiments, the first low-pass structure includes a first high-impedance segment and a first low-impedance segment that are staggered;

[0010] The second low-pass structure includes a second high-impedance segment and a second low-impedance segment that are alternately arranged.

[0011] In some embodiments, the first high impedance segment and the second high impedance segment are rod-shaped structures respectively, and at least the surfaces of the first high impedance segment and the second high impedance segment are metal surfaces;

[0012] The first low-impedance segment and the second low-impedance segment are respectively disk-shaped structures, and at least the surfaces of the first low-impedance segment and the second low-impedance segment are metal surfaces.

[0013] In some embodiments, the outer diameter of the first high-impedance segment is smaller than the outer diameter of the first low-impedance segment;

[0014] An outer diameter of the second high-impedance section is smaller than an outer diameter of the second low-impedance section.

[0015] In some embodiments, one end of the connector is connected to one end of the first high impedance segment, and the other end of the connector is connected to one end of the second high impedance segment.

[0016] In some embodiments, the connecting member is a high-resistance connecting rod.

[0017] In some embodiments, the connector is a third low-pass structure;

[0018] The third low-pass structure includes at least one third low-impedance segment and at least one third high-impedance segment, and the third low-impedance segment and the third high-impedance segment are alternately arranged.

[0019] In a second aspect, the utility model provides a filter, including a body, a connector, a mounting seat and the low-pass structure;

[0020] The joint is arranged at an end of the first low-pass structure away from the connecting member;

[0021] The body is provided with a cavity, the mounting seat is provided with a through hole penetrating the mounting seat, the filter assembly is accommodated in the cavity, the mounting seat is sleeved on the first low-pass structure, and the connecting member is arranged at the bottom of the cavity.

[0022] In some embodiments, the cavity includes a first mounting hole, a low through hole and a low through slot, and the first mounting hole and the low through hole are connected through the low through slot;

[0023] The mounting seat is received in the first mounting hole, and the second low-pass structure is received in the low-pass hole.

[0024] In some embodiments, the body is provided with a limiting step, and the limiting step surrounds the notch of the first mounting hole;

[0025] A boss is provided on the outer periphery of the mounting seat, a side of the boss facing the cavity abuts against the limiting step, and a shielding ring is provided on a side of the boss away from the limiting step.

[0026] The embodiments of the utility model have the following advantages: the filter assembly provided by the utility model connects the first low-pass structure and the second low-pass structure through a connecting piece to form a U-shaped low-pass structure, which simplifies the low-pass structure and reduces material costs. It not only has a simple structure but also has a small size, which is conducive to saving space and facilitating production and processing, and further helps to reduce the volume of the filter using the filter assembly provided by the present application.

[0027] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 A structural schematic diagram of a filter assembly provided by some embodiments of the utility model from a viewing angle is shown;

[0030] Figure 2 A cross-sectional view from one viewing angle of an implementation of a filter provided by some embodiments of the utility model is shown;

[0031] Figure 3 A cross-sectional view from one viewing angle of another implementation of a filter provided by some embodiments of the utility model is shown;

[0032] Figure 4 A cross-sectional view from one viewing angle of another implementation of a filter provided by some embodiments of the utility model is shown;

[0033] Figure 5 A schematic structural diagram of a filter body from one viewing angle is shown in some embodiments of the present utility model;

[0034] Figure 6 A cross-sectional view of a mounting seat in a filter provided by some embodiments of the utility model is shown.

[0035] Description of Main Component Symbols:

[0036] 100 - First low - pass structure; 200 - Second low - pass structure; 300 - Connector; 110 - First high - impedance section; 120 - First low - impedance section; 210 - Second high - impedance section; 220 - Second low - impedance section; 310 - Third low - pass structure; 311 - Third low - impedance section; 312 - Third high - impedance section; 400 - Body; 500 - Joint; 600 - Mounting base; 410 - Cavity; 610 - Through - hole; 411 - First mounting hole; 412 - Low - through hole; 413 - Low - pass groove; 420 - Limiting step; 620 - Boss; 700 - Shielding ring. Detailed Embodiment

[0037] The embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for explaining the present utility model and should not be construed as limiting the present utility model.

[0038] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. On the contrary, when an element is referred to as being "directly on" another element, there is no intermediate element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0039] In the present utility model, unless otherwise clearly specified and defined, the terms "installed", "connected", "connected to", "fixed" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of 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 utility model can be understood according to specific circumstances.

[0040] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood 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 utility model, the meaning of "a plurality" is two or more unless otherwise clearly and specifically defined.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terms used in the description of the template herein are for the purpose of describing specific embodiments only and are not intended to limit the present utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0042] As Figure 1 shown, some embodiments of the present utility model provide a filtering component, which is mainly applied to a filter to reduce the occupied area of the filtering component in the filter, thereby improving the space utilization rate of the filter, simplifying the overall structure of the filter, reducing its processing difficulty, improving the production efficiency of the filter, and reducing the production cost.

[0043] The filtering component includes a first low-pass structure 100, a second low-pass structure 200, and a connecting member 300.

[0044] Among them, the first low-pass structure 100 and the second low-pass structure 200 are arranged at intervals. It should be noted that the axis of the first low-pass structure 100 is parallel to the axis of the second low-pass structure 200.

[0045] One end of the connecting member 300 is arranged along a first direction at one end of the first low-pass structure 100, and one end of the connecting member 300 is connected to the first low-pass structure 100 to form an L-shaped low-pass structure. By connecting the other end of the connecting member 300 to the second low-pass structure 200, a U-shaped low-pass structure is formed. It can be understood that the connecting member 300 is arranged on the same side of the first low-pass structure 100 and the second low-pass structure 200.

[0046] It should be noted that the first direction refers to the length direction of the first low-pass structure 100, or the length direction of the second low-pass structure 200, or the axis direction of the first low-pass structure 100, or the axis direction of the second low-pass structure 200.

[0047] In this embodiment, the axial direction of the first low-pass structure 100 is parallel to the axis direction of the second low-pass structure 200.

[0048] For the filtering component provided by the present utility model, the first low-pass structure 100 and the second low-pass structure 200 are connected by the connecting member 300 to form a U-shaped low-pass structure. In terms of material cost, materials such as the main rod of the joint 500, the transmission copper sheet, and the support body are saved, reducing the material cost. It is not only simple in structure but also small in volume, which is beneficial to saving space and production processing, and further beneficial to reducing the volume of the filter using the filtering component provided by this application.

[0049] As Figure 1As shown, in some embodiments of the present utility model, the first low-pass structure 100 includes a first high-impedance section 110 and a first low-impedance section 120 arranged alternately. Among them, the number of the first high-impedance section 110 and the first low-impedance section 120 can be one, two, or any number greater than or equal to two, and can be specifically set according to actual situations.

[0050] It should be noted that the arrangement direction between the first high-impedance section 110 and the first low-impedance section 120 is parallel to the axis direction of the first low-pass structure 100. Further, the axes of the first high-impedance section 110 and the first low-impedance section 120 coincide.

[0051] In addition, the second low-pass structure 200 includes a second high-impedance section 210 and a second low-impedance section 220 arranged alternately. Among them, the number of the second high-impedance section 210 and the second low-impedance section 220 can be one, two, or any number greater than or equal to two, and can be specifically set according to actual situations.

[0052] It should be noted that the arrangement direction between the second high-impedance section 210 and the second low-impedance section 220 is parallel to the axis direction of the second low-pass structure 200. Further, the axes of the second high-impedance section 210 and the second low-impedance section 220 coincide.

[0053] Among them, the connection method between the first high-impedance section 110 and the first low-impedance section 120 includes any one of snap connection, welding, or integral molding; in addition, the connection method between the second high-impedance section 210 and the second low-impedance section 220 includes any one of snap connection, welding, or integral molding, and can be specifically set according to actual situations.

[0054] In this embodiment, the first high-impedance section 110 and the first low-impedance section 120 are connected by integral molding to form the first low-pass structure 100, and the second high-impedance section 210 and the second low-impedance section 220 are connected by integral molding to form the second low-pass structure 200, so as to ensure the overall strength and stability of the first low-pass structure 100 and the second low-pass structure 200.

[0055] Further, in some embodiments, the number of the first high-impedance section 110, the first low-impedance section 120, the second high-impedance section 210, and the second low-impedance section 220 is at least two respectively, so as to form a capacitor between two adjacent first low-impedance sections 120 and form a capacitor between two adjacent second low-impedance sections 220. It can be understood that by adjusting the first high-impedance section 110, the first low-impedance section 120, the second high-impedance section 210, and the second low-impedance section 220, the lengths of the first low-pass structure 100 and the second low-pass structure 200 are adjusted, thereby adjusting the space occupied by the filtering component.

[0056] Specifically, in this embodiment, there are three first high-impedance segments 110 and three first low-impedance segments 120, and two second high-impedance segments 210 and two second low-impedance segments 220.

[0057] As Figure 1 shown, in some embodiments of the present utility model, the first high-impedance segment 110 and the second high-impedance segment 210 are respectively rod-shaped structures, and at least the surfaces of the first high-impedance segment 110 and the second high-impedance segment 210 are metal surfaces. Among them, the shapes of the first high-impedance segment 110 and the second high-impedance segment 210 can be cylindrical or prismatic.

[0058] It can be understood that, in some embodiments, the first high-impedance segment 110 and the second high-impedance segment 210 are respectively metal rod-shaped structures. Additionally, in some other embodiments, the first high-impedance segment 110 and the second high-impedance segment 210 are non-metal rod-shaped structures, and a metal layer is plated on the surfaces of the non-metal rod-shaped structures, thereby metallizing the surfaces of the first high-impedance segment 110 and the second high-impedance segment 210.

[0059] Among them, the first low-impedance segment 120 and the second low-impedance segment 220 are respectively disc-shaped structures, and at least the surfaces of the first low-impedance segment 120 and the second low-impedance segment 220 are metal surfaces.

[0060] It can be understood that, in some embodiments, the first low-impedance segment 120 and the second low-impedance segment 220 are respectively metal disc-shaped structures. Additionally, in some other embodiments, the first low-impedance segment 120 and the second low-impedance segment 220 are non-metal disc-shaped structures, and a metal layer is plated on the surfaces of the non-metal disc-shaped structures, thereby metallizing the surfaces of the first low-impedance segment 120 and the second low-impedance segment 220.

[0061] In some embodiments of the present utility model, the outer diameter of the first high-impedance segment 110 is smaller than the outer diameter of the first low-impedance segment 120.

[0062] Additionally, the outer diameter of the second high-impedance segment 210 is smaller than the outer diameter of the second low-impedance segment 220 to pass through between adjacent second low-impedance segments 220.

[0063] As Figure 1 shown, in some embodiments of the present utility model, one end of the connecting member 300 is connected to one end of the first high-impedance segment 110, and the other end of the connecting member 300 is connected to one end of the second high-impedance segment 210, thereby connecting the first low-pass structure 100 and the second low-pass structure 200 through the connecting member 300.

[0064] Among them, the connection method between the connecting member 300 and the second low-pass structure 200 includes any one of snap connection, welding or integral molding, which can be specifically set according to the actual situation.

[0065] In some embodiments, the connecting member 300 and the second high-impedance section 210 are integrally connected and formed. It can be understood that the connecting member 300 is formed by bending the second high-impedance section 210. An L-shaped axis is formed by connecting the connecting member 300 and the second low-pass structure 200, that is, the axis of the connecting member 300 is perpendicular to the axis of the second low-pass structure 200.

[0066] Such as Figure 1 and Figure 2 As shown, in some embodiments of the present invention, the connecting member 300 is a high-impedance connecting rod. It can be understood that the connecting member 300 is a metal rod-shaped structure.

[0067] Specifically, in this embodiment, the connecting member 300 is formed by bending the second high-impedance section 210, and the other end of the connecting member 300 is welded to the second high-impedance section 210, so as to connect the first low-pass structure 100 and the second low-pass structure 200 through the connecting member 300 to form a U-shaped low-pass structure.

[0068] Such as Figure 1 and Figure 3 As shown, in some embodiments of the present invention, the connecting member 300 is an independent structure. One end of the connecting member 300 is welded to the first high-impedance section 110, and the other end of the connecting member 300 is welded to the second high-impedance section 210, so as to connect the first low-pass structure 100 and the second low-pass structure 200 through the connecting member 300 to form a U-shaped low-pass structure.

[0069] Such as Figure 1 and Figure 4 As shown, in some embodiments of the present invention, the connecting member 300 is a third low-pass structure 310.

[0070] Among them, the third low-pass structure 310 includes at least one third low-impedance section 311 and at least one third high-impedance section 312. The third low-impedance section 311 and the third high-impedance section 312 are arranged alternately, and the third low-impedance section 311 and the third high-impedance section 312 are formed by welding.

[0071] Such as Figures 2 to 6 As shown, some embodiments of the present invention provide a filter, including a body 400, a connector 500, a mounting seat 600 and the low-pass structure described in any one of the above.

[0072] Among them, the connector 500 is arranged on the side of the first low-pass structure 100 away from the connecting member 300. The connection method between the connector 500 and the first low-pass structure 100 includes welding, snap connection or integral connection and formation.

[0073] In addition, the main body 400 is provided with a cavity 410, the mounting seat 600 is provided with a through hole 610 penetrating the mounting seat 600, the filter component is accommodated in the cavity 410, the mounting seat 600 is sleeved on the first low-pass structure 100, that is, the first low-pass structure 100 is arranged in the through hole 610, and the connecting member 300 is arranged at the bottom of the cavity 410.

[0074] It should be noted that the first low-pass structure 100 and the second low-pass structure 200 are welded through the connector 300 to form a filter assembly and then assembled on the cavity 410, and the outer wall of the connector 500 and the low-pass hole 412 of the cavity 410 and the second low-impedance section 220 form a capacitor structure. In this embodiment, the axis of the low-impedance section of the low-pass structure is the same as the depth direction of the cavity 410.

[0075] like Figures 2 to 5 As shown, in some embodiments of the present invention, the cavity 410 includes a first mounting hole 411, a low through hole 412 and a low through slot 413, and the first mounting hole 411 and the low through hole 412 are connected through the low through slot 413. The connecting member 300 passes through the first mounting hole 411, the low through hole 412 and the low through slot 413.

[0076] In addition, the mounting seat 600 is received in the first mounting hole 411, and the second low-pass structure 200 is received in the low-pass hole 412. By using the mounting seat 600 as the low-pass hole 412 of the first low-pass structure 100 of the U-shaped low-pass structure (i.e., the filter assembly), and the connecting member 300 and the second low-pass structure 200 of the U-shaped low-pass structure (i.e., the filter assembly) use the L-shaped groove of the cavity 410 as the low-pass groove 413, the structure of the low-pass mounting seat 600 is simplified.

[0077] In this embodiment, the width of the low-through groove 413 is less than or equal to the diameter of the low-through hole 412 . The depth of the low-through groove 413 is greater than or equal to the depth of the low-through hole 412 .

[0078] like Figures 4 to 6 As shown, in some embodiments of the present invention, the main body 400 is provided with a limiting step 420 , and the limiting step 420 surrounds the notch of the first mounting hole 411 .

[0079] Among them, a boss 620 is provided on the outer periphery of the mounting seat 600, and the boss 620 abuts against the limiting step 420 on the side facing the cavity 410, and a shielding ring 700 is provided on the side of the boss 620 away from the limiting step 420. The bottom shielding ring 700 of the boss 620 forms an envelope surface with the rectangular groove surface of the low-pass groove 413 of the cavity 410, and forms a capacitor structure with the horizontal low-resistance section of the low-pass second.

[0080] The filter provided by the present utility model improves the flexibility of product design by controlling the length and width area occupied by the filtering component. When the external dimension of the filter is insufficient, the lengths and quantities of the low-resistance section and the height section can be increased to improve the frequency response characteristics of the filter.

[0081] In all the examples shown and described here, any specific value should be construed as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values.

[0082] It should be noted that like reference numerals and letters denote like items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0083] The above-described embodiments merely represent several implementation manners of the present utility model. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the present utility model. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all belong to the protection scope of the present utility model.

Claims

1. A filtering component, characterized in that, Comprising: A first low-pass structure and a second low-pass structure, the first low-pass structure and the second low-pass structure being arranged at intervals; A connecting member, arranged at one end of the first low-pass structure along a first direction, one end of the connecting member being connected to the first low-pass structure, and the other end of the connecting member being connected to the second low-pass structure to form a U-shaped low-pass structure.

2. The filtering component according to claim 1, characterized in that The first low-pass structure includes first high-impedance segments and first low-impedance segments arranged alternately; The second low-pass structure includes second high-impedance segments and second low-impedance segments arranged alternately.

3. The filtering component according to claim 2, characterized in that, The first high-impedance segments and the second high-impedance segments are respectively rod-shaped structures, and at least the surfaces of the first high-impedance segments and the second high-impedance segments are metal surfaces; The first low-impedance segments and the second low-impedance segments are respectively disc-shaped structures, and at least the surfaces of the first low-impedance segments and the second low-impedance segments are metal surfaces.

4. The filter component according to claim 2, wherein The outer diameter of the first high-impedance segment is smaller than the outer diameter of the first low-impedance segment; The outer diameter of the second high-impedance segment is smaller than the outer diameter of the second low-impedance segment.

5. The filter component according to claim 2, wherein One end of the connecting member is connected to one end of the first high-impedance segment, and the other end of the connecting member is connected to one end of the second high-impedance segment.

6. The filter component according to any one of claims 1 to 5, characterized in that The connecting member is a high-impedance connecting rod.

7. The filtering component according to any one of claims 1 to 5, characterized in that, The connecting member is a third low-pass structure; The third low-pass structure includes at least one third low-impedance segment and at least one third high-impedance segment, the third low-impedance segment and the third high-impedance segment being arranged alternately.

8. A filter, characterized in that, Comprising a body, a joint, a mounting seat, and a filtering component according to any one of claims 1 to 7; The joint is arranged at one end of the first low-pass structure facing away from the connecting member; The body is provided with a cavity, the mounting seat is provided with a through hole penetrating through the mounting seat, the filtering component is received in the cavity, the mounting seat is sleeved on the first low-pass structure, and the connecting member is arranged at the bottom of the cavity.

9. The filter according to claim 8, characterized in that The cavity includes a first mounting hole, a low-pass hole, and a low-pass groove, the first mounting hole and the low-pass hole being communicated through the low-pass groove; The mounting seat is received in the first mounting hole, and the second low-pass structure is received in the low-pass hole.

10. The filter according to claim 9, wherein The body is provided with a limiting step, the limiting step surrounding the notch of the first mounting hole; The outer periphery of the mounting seat is provided with a boss, one side of the boss facing the cavity abutting against the limiting step, and a shielding ring being provided on one side of the boss facing away from the limiting step.

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