Filter
By designing a movable debugging rod and resonant rod in the filter, adjusting the coupling range is achieved, and the problem of difficult frequency and coupling caused by the space limitation of the existing filter structure is solved, and the adjustment efficiency and frequency matching are improved.
Patent Information
- Application Number
- CN202421771187.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-25
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-07-25
AI Technical Summary
Due to structural space limitations, the coupling and frequency of existing low-frequency broadband filters are difficult to meet the requirements. Traditional improvement methods such as changing the screw depth or increasing the reinforcement ribs, the tuning volume is small and the frequency impact is large, so they cannot meet the product requirements.
A filter is designed, including a filter body, a first and a second resonant rod, a first and a second debugging rod, and adjusting the distance between the debugging rod and the resonant rod, adjusting the coupling range.
It realizes convenient adjustment of the coupling range, improves adjustment efficiency, and does not affect the frequency of the resonant rod, meeting the product's needs for frequency and coupling.
Smart Images
Figure CN222915134U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of filters, and particularly relates to a filter. Background Art
[0002] With the rapid development of the communication industry, the trend of filters is towards integration and miniaturization. There are many existing low-frequency broadband products, but due to the limitation of the structural space, the coupling and frequency cannot meet our requirements.
[0003] Traditionally, two measures, namely changing the screw depth and increasing the height of the reinforcing rib, are used to enhance coupling. However, since the tuning amount of changing the screw depth is too small, usually the coupling strength is changed by changing the height of the reinforcing rib. But increasing the height of the reinforcing rib has a greater impact on the frequency of the resonant rod, resulting in the frequency not meeting the product requirements and unable to be mass-produced. Summary of the Utility Model
[0004] In view of this, the purpose of the utility model is to overcome the deficiencies in the prior art and provide a filter.
[0005] In a first aspect, the utility model provides a filter, comprising:
[0006] A filter body defining a receiving cavity;
[0007] At least one first resonant rod and at least one second resonant rod, the first resonant rod and the second resonant rod are alternately arranged in the receiving cavity along a first direction, and adjacent first resonant rod and second resonant rod are arranged offset along a second direction, the first direction being perpendicular to the second direction;
[0008] A first tuning rod and a second tuning rod, respectively movably connected to the filter body along the second direction, one end of the first tuning rod and the second tuning rod is at least partially received in the receiving cavity, the first tuning rod is coaxially arranged with the first resonant rod, and the second tuning rod is coaxially arranged with the second resonant rod.
[0009] In some embodiments, the filter body includes a base and a cover;
[0010] The base is provided with a receiving groove, the cover is connected to the base and covers the receiving groove to define the receiving cavity between the base and the cover.
[0011] In some embodiments, at least two of the first resonant rod and the second resonant rod;
[0012] The first resonant rod and the second resonant rod are arranged at equal intervals along the first direction.
[0013] In some embodiments, a first groove is provided on one side of the first resonant rod facing the cover body, at least a part of the first tuning rod is received in the first groove, and there is a gap between the first tuning rod and the groove wall of the first groove.
[0014] In some embodiments, a second groove is provided on one side of the second resonant rod facing the cover body, at least a part of the second tuning rod is received in the second groove, and there is a gap between the second tuning rod and the groove wall of the second groove.
[0015] In some embodiments, along the first direction, a column is provided between adjacent first and second resonant rods, and there are intervals between the first and second resonant rods and the column respectively.
[0016] In some embodiments, reinforcing ribs are provided between the first resonant rod and the second resonant rod and the column respectively.
[0017] In some embodiments, along the first direction, the axes of the first resonant rod, the second resonant rod, the first tuning rod, the second tuning rod, and the column are located in the same plane.
[0018] In some embodiments, the first tuning rod and the second tuning rod respectively pass through the cover body and are threadedly connected to the cover body.
[0019] In some embodiments, a first nut and a second nut are provided on one side of the cover body facing away from the base, the first nut is threadedly connected to the first tuning rod, and the second nut is threadedly connected to the second tuning rod.
[0020] The embodiments of the present utility model have the following advantages: By movably connecting the first tuning rod to the filter body and aligning the first tuning rod with the first resonant rod, and at the same time movably connecting the second tuning rod to the filter body and aligning the second tuning rod with the second resonant rod, the distance between the first tuning rod and the first resonant rod and the distance between the second tuning rod and the second resonant rod are adjusted to adjust the coupling range. This not only does not affect the frequencies of the first and second resonant rods, but also the adjustment of the coupling range is convenient, thereby improving the adjustment efficiency.
[0021] To make the above objects, features, and advantages of the present utility model more obvious and understandable, the following specifically enumerates preferred embodiments and, in conjunction with the accompanying drawings, makes the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the attached drawings required for use in the embodiments. It should be understood that the following attached drawings only show certain embodiments of the present utility model, and thus should not be regarded as a limitation of the scope. For those of ordinary skill in the art, without creative efforts, other related attached drawings can also be obtained based on these attached drawings.
[0023] Figure 1 The structural schematic diagram of a perspective view of a filter provided by some embodiments of the present utility model is shown;
[0024] Figure 2 shown Figure 1 the cross-sectional view of part A-A in
[0025] Figure 3 The structural schematic diagram of a perspective view of a base in a filter provided by some embodiments of the present utility model is shown.
[0026] Main element symbol description:
[0027] 100 - filter body; 110 - accommodation cavity; 200 - first resonance rod; 300 - second resonance rod; 400 - first adjustment rod; 500 - second adjustment rod; 120 - base; 130 - cover; 121 - accommodation groove; 210 - first groove; 310 - second groove; 600 - column; 700 - reinforcing rib; 800 - first nut; 900 - second nut. Specific embodiments
[0028] The following will describe in detail the embodiments of the present utility model. The examples of the embodiments are shown in the attached drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below by referring to the attached drawings are exemplary and are only used to explain the present utility model, and should not be construed as a limitation of the present utility model.
[0029] It should be noted that when an element is referred to as "fixed to" another element, it can be directly on the other element or there may 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 only for the purpose of illustration.
[0030] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "linkage", "fixation", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral body; 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 components or the interaction relationship between two components. 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.
[0031] 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.
[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs. The terms used in the description of the template herein are only for the purpose of describing specific embodiments 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.
[0033] As Figures 1 to 3 shown, some embodiments of the present utility model provide a filter, which is mainly applied to the filter to improve the coupling adjustment range of the filter, reduce the adjustment difficulty, and improve the adjustment efficiency.
[0034] The filter includes a filter body 100, a first resonant rod 200, a second resonant rod 300, a first debugging rod 400, and a second debugging rod 500.
[0035] The filter body 100 defines a receiving cavity 110.
[0036] In this embodiment, the number of the first resonant rods 200 and the second resonant rods 300 is at least one respectively. It can be understood that the number of the first resonant rods 200 and the number of the second resonant rods 300 can be one, two, or any number more than two, and can be specifically set according to actual situations.
[0037] Wherein, the first resonant rods 200 and the second resonant rods 300 are alternately arranged in the receiving cavity 110 along a first direction, and there is a gap between adjacent first resonant rods 200 and second resonant rods 300. The axes of the first resonant rods 200 are parallel to the axes of the second resonant rods 300 and are both perpendicular to the first direction.
[0038] It should be noted that the first direction refers to the length direction of the filter body 100.
[0039] In addition, the adjacent first resonant rod 200 and the second resonant rod 300 are arranged in a dislocation along the second direction, that is, the heights of the first resonant rod 200 and the second resonant rod 300 in the second direction are different, and the first direction is perpendicular to the second direction.
[0040] It should be noted that the second direction is the height direction of the filter body 100, that is, the axial direction of the first resonant rod 200 and the second resonant rod 300.
[0041] Furthermore, the first tuning rod 400 and the second tuning rod 500 are respectively movably connected to the filter body 100 along the second direction. It should be noted that the connection manners between the first tuning rod 400 and the second tuning rod 500 and the filter body 100 respectively include any one of screw connection, bolt connection, sliding connection, and snap connection.
[0042] It can be understood that by movably connecting the first tuning rod 400 and the second tuning rod 500 to the filter body 100 respectively, the first tuning rod 400 and the second tuning rod 500 can move relative to the filter body 100 along the second direction, so as to increase the coupling adjustment range of the filter, thereby enabling the user to adjust the first tuning rod 400 and the second tuning rod 500 according to needs to meet different requirements of the user.
[0043] Specifically, one end of the first tuning rod 400 and the second tuning rod 500 is at least partially received in the receiving cavity 110, and the first tuning rod 400 is coaxially arranged with the first resonant rod 200, and there is a gap between the first tuning rod 400 and the first resonant rod 200, so that the user can adjust the coupling range by adjusting the distance between the first tuning rod 400 and the first resonant rod 200. In addition, the second tuning rod 500 is coaxially arranged with the second resonant rod 300, and there is a gap between the second tuning rod 500 and the second resonant rod 300, so that the user can adjust the coupling range by adjusting the distance between the second tuning rod 500 and the second resonant rod 300.
[0044] By movably connecting the first debugging rod 400 to the filter body 100, aligning the first debugging rod 400 with the first resonant rod 200, simultaneously movably connecting the second debugging rod 500 to the filter body 100, and aligning the second debugging rod 500 with the second resonant rod 300, the coupling range can be adjusted by adjusting the distance between the first debugging rod 400 and the first resonant rod 200 and the distance between the second debugging rod 500 and the second resonant rod 300. This not only does not affect the frequencies of the first resonant rod 200 and the second resonant rod 300, but also facilitates the adjustment of the coupling range, thereby improving the adjustment efficiency.
[0045] As Figure 2 and Figure 3 shown, in some embodiments of the present invention, the filter body 100 includes a base 120 and a cover 130.
[0046] Among them, the connection method between the base 120 and the cover 130 includes any one of bolt connection, snap connection, bonding or integral molding, which can be specifically set according to the actual situation.
[0047] In this embodiment, the base 120 and the cover 130 are bolt-connected to improve the connection stability between the cover 130 and the base 120 while enhancing the installation or disassembly efficiency between the cover 130 and the base 120.
[0048] In addition, a receiving groove 121 is provided on one side of the base 120 in the second direction. The cover 130 is connected to the base 120 and covers the receiving groove 121 to define the receiving cavity 110 between the base 120 and the cover 130.
[0049] It should be noted that the first resonant rod 200 and the second resonant rod 300 are respectively connected to the base 120 and are disposed in the receiving groove 121.
[0050] Among them, the connection method between the first resonant rod 200 and the second resonant rod 300 and the base 120 can be any one of bonding, snap connection, bolt connection or integral molding, which can be specifically set according to the actual situation.
[0051] In this embodiment, the first resonant rod 200 is connected to the base 120 by bolt connection to improve the connection stability between the first resonant rod 200 and the base 120, while being easy to install, disassemble or replace.
[0052] As Figure 2 and Figure 3As shown, in some embodiments of the present utility model, along the first direction, a cylinder 600 is provided between adjacent first resonant rods 200 and second resonant rods 300, and this cylinder 600 is a reinforcing column. It should be noted that the distances between the axes of the first resonant rod 200 and the second resonant rod 300 and the axis of the cylinder 600 can be specifically set according to actual situations.
[0053] Among them, there is a gap between the first resonant rod 200 and the cylinder 600, and there is a gap between the second resonant rod 300 and the cylinder 600, and the axis of the cylinder 600 is parallel to the axes of the first resonant rod 200 and the second resonant rod 300.
[0054] In some embodiments, the distance between the axis of the first resonant rod 200 and the axis of the cylinder 600 is equal to the distance between the axis of the second resonant rod 300 and the axis of the cylinder 600.
[0055] It should be noted that in this embodiment, the axes of the first resonant rod 200, the second resonant rod 300, the cylinder 600, the first debugging rod 400, the second debugging rod 500, and the cylinder 600 are all located in the same plane.
[0056] As Figure 2 shown, in some embodiments of the present utility model, there are at least two first resonant rods 200 and second resonant rods 300, that is, the number of the first resonant rods 200 and the second resonant rods 300 can be two or any number greater than two, and can be specifically set according to actual situations.
[0057] In this embodiment, taking the number of the first resonant rods 200 as three and the number of the second resonant rods 300 as two as an example, the following specific description is made.
[0058] In this embodiment, there is a gap between adjacent first resonant rods 200 and second resonant rods 300, and the first resonant rods 200 and the second resonant rods 300 are arranged at equal intervals along the first direction.
[0059] As Figure 2 and Figure 3 shown, in some embodiments of the present utility model, a first groove 210 is provided on the side of the first resonant rod 200 facing the cover body 130, and this first groove 210 is a cylindrical groove, and the axis of the first groove 210 coincides with the axis of the first resonant rod 200.
[0060] Specifically, at least a part of the first debugging rod 400 is received in the first groove 210, that is, one end of the first debugging rod 400 disposed in the accommodation cavity 110 is at least partially inserted into the first groove 210, and there is a gap between the first debugging rod 400 and the groove wall of the first groove 210.
[0061] It can be understood that the axis of the first debugging rod 400 coincides with the axis of the first groove 210. By adjusting the length of the first debugging rod 400 inserted into the first groove 210, the coupling range of the filter can be adjusted.
[0062] As Figure 2 shown, in some embodiments of the present invention, a second groove 310 is provided on one side of the second resonant rod 300 facing the cover body 130. The second groove 310 is a cylindrical groove, and the axis of the second groove 310 coincides with the axis of the second resonant rod 300.
[0063] Specifically, at least a part of the second debugging rod 500 is received in the second groove 310, that is, one end of the second debugging rod 500 disposed in the accommodation cavity 110 is at least partially inserted into the second groove 310, and there is a gap between the second debugging rod 500 and the groove wall of the second groove 310.
[0064] It can be understood that the axis of the second debugging rod 500 coincides with the axis of the second groove 310. By adjusting the length of the second debugging rod 500 inserted into the second groove 310, the coupling range of the filter can be adjusted.
[0065] As Figure 2 shown, in some embodiments of the present invention, the first debugging rod 400 and the second debugging rod 500 respectively pass through the cover body 130 and are respectively threadedly connected to the cover body 130.
[0066] In this embodiment, the first debugging rod 400 and the second debugging rod 500 respectively pass through the cover body 130 along the second direction.
[0067] Specifically, the first debugging rod 400 and the second debugging rod 500 are respectively threaded rods. One end of the first debugging rod 400 and the second debugging rod 500 passes through the cover body 130 and is disposed in the accommodation cavity 110, and the first debugging rod 400 and the second debugging rod 500 are respectively threadedly connected to the cover body 130, which can not only improve the connection stability between the first debugging rod 400 and the second debugging rod 500 and the cover body 130 respectively, but also improve the convenience of height adjustment of the first debugging rod 400 and the second debugging rod 500 in the second direction, thereby improving the efficiency of adjusting the coupling range of the filter.
[0068] As Figure 1 and Figure 2As shown, in some embodiments of the present utility model, a first nut 800 is provided on a side of the cover body 130 facing away from the base 120. The first nut 800 is threadedly connected to the first adjustment rod 400 to form a limiting effect on the first adjustment rod 400 through the first nut 800, so as to prevent the first adjustment rod 400 from moving towards the direction close to the base 120 under the action of its own gravity, thereby ensuring the stability of the connection between the first adjustment rod 400 and the cover body 130, and the stability of the distance between the first adjustment rod 400 and the first resonant rod 200.
[0069] In addition, the second nut 900 is threadedly connected to the second adjustment rod 500 to form a limiting effect on the second adjustment rod 500 through the second nut 900, so as to prevent the second adjustment rod 500 from moving towards the direction close to the base 120 under the action of its own gravity, thereby ensuring the stability of the connection between the second adjustment rod 500 and the cover body 130, and the stability of the distance between the second adjustment rod 500 and the second resonant rod 300.
[0070] As Figure 2 and Figure 3 shown, in some embodiments of the present utility model, reinforcing ribs 700 are provided between the first resonant rod 200 and the second resonant rod 300 and the column 600 respectively. The reinforcing ribs 700 are installed at the bottom of the receiving groove 121, and the reinforcing ribs 700 are fixedly connected to the base 120. The first resonant rod 200 and the second resonant rod 300 are respectively connected to the column 600 through the reinforcing ribs 700 to improve the stability of the connection between the first resonant rod 200, the second resonant rod 300 and the column 600 and the base 120 respectively.
[0071] In all the examples shown and described here, any specific value should be construed as merely exemplary, not as a limitation. Therefore, other examples of the exemplary embodiments may have different values.
[0072] It should be noted that: similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.
[0073] 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 to 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 filter, characterized in that: include: A filter body defines a receiving cavity; At least one first resonant rod and at least one second resonant rod, the first resonant rod and the second resonant rod are alternately arranged in the accommodating cavity along a first direction, and adjacent first resonant rods and second resonant rods are staggered along a second direction, and the first direction is perpendicular to the second direction; The first debugging rod and the second debugging rod are respectively movably connected to the filter body along the second direction, one end of the first debugging rod and the second debugging rod is at least partially accommodated in the accommodating cavity, the first debugging rod is coaxially arranged with the first resonant rod, and the second debugging rod is coaxially arranged with the second resonant rod.
2. The filter according to claim 1, characterized in that The filter body comprises a base and a cover; The base is provided with a receiving groove, and the cover body is connected to the base and covers the receiving groove to define the receiving cavity between the base and the cover body.
3. The filter according to claim 2, characterized in that There are at least two first resonant rods and at least two second resonant rods; The first resonant rods and the second resonant rods are arranged at equal intervals along the first direction.
4. The filter according to claim 2 or 3, characterized in that: A first groove is provided on a side of the first resonant rod facing the cover body, the first debugging rod is at least partially received in the first groove, and a gap is provided between the first debugging rod and a groove wall of the first groove.
5. The filter according to claim 4, characterized in that A second groove is provided on a side of the second resonant rod facing the cover body, the second debugging rod is at least partially received in the second groove, and a gap is provided between the second debugging rod and a groove wall of the second groove.
6. The filter according to claim 5, characterized in that Along the first direction, a column is provided between the adjacent first resonant rods and the second resonant rods, and there is a gap between the first resonant rod and the second resonant rod and the column respectively.
7. The filter according to claim 6, characterized in that The first resonant rod and the second resonant rod are respectively provided with reinforcing ribs between the columns.
8. The filter according to claim 6, characterized in that Along the first direction, the axis of the first resonant rod, the axis of the second resonant rod, the axis of the first debugging rod, the axis of the second debugging rod and the axis of the column are located in the same plane.
9. The filter according to claim 8, characterized in that The first debugging rod and the second debugging rod are respectively penetrated through the cover body and are respectively threadedly connected with the cover body.
10. The filter according to claim 9, characterized in that A first nut and a second nut are provided on a side of the cover body facing away from the base. The first nut is threadedly connected to the first debugging rod, and the second nut is threadedly connected to the second debugging rod.