Tuning assembly and filter

Abstract

The invention provides a tuning assembly and a filter, and the tuning assembly comprises a cover plate which is provided with a plurality of columns of first threaded holes distributed at intervals in the width direction of the cover plate, and the first threaded holes in each column are distributed at intervals in the length direction of the cover plate; the multiple first adjusting rods are screwed and assembled in the multiple first threaded holes in a one-to-one correspondence mode, one of the hardness of the outer sides of the first adjusting rods and the hardness of the inner walls of the first threaded holes is relatively large, and the other one of the hardness of the outer sides of the first adjusting rods and the hardness of the inner walls of the first threaded holes is relatively small; and the first locking pieces are arranged on the first adjusting rods in a one-to-one correspondence mode, the first locking pieces are electrically connected to the cover plate and the first adjusting rods respectively, and the first locking pieces are grounded. When the first adjusting rod is rotated, one of the hardness of the outer side of the first adjusting rod and the hardness of the inner wall of the first threaded hole is relatively high, and the other one of the hardness of the outer side of the first adjusting rod and the hardness of the inner wall of the first threaded hole is relatively low, so that chippings generated by mutual friction between the first adjusting rod and the inner wall of the first threaded hole can be effectively avoided, and the situation that the intermodulation performance is reduced due to the fact that the chippings fall into the resonant cavity is effectively prevented.

Description

Technical Field

[0001] The present invention relates to the technical field of radio frequency communication, and in particular to a tuning component and a filter. Background Art

[0002] In the field of radio frequency communication, cavity filters are widely used as a frequency selection device. Cavity filters select effective communication signals to pass through and filter out high-frequency clutter or interference signals outside the communication signal frequency. They are widely used in information processing, data transmission, and interference suppression. The intermodulation parameters of the filter play an important role in the electrical performance of the filter. Due to the processing and assembly errors of the materials that make up the filter, the single cavity resonant frequency of the filter and the coupling coefficient between different single cavities need to be adjusted through the adjustment rod so that the frequency response characteristics of the filter meet the requirements.

[0003] In the related art, the adjustment rod and the cover are generally locked by a threaded structure, the debugging cover is provided with a metal hole containing an internal thread, and the outer surface of the adjustment rod is provided with an external thread. When the filter is produced, debugged, and locked, the metal debris generated by the friction between the threaded hole of the cover and the thread of the adjustment rod will fall into the resonant cavity, resulting in a decrease in intermodulation performance. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a tuning component and a filter, aiming to solve the problem in the related art that metal debris may fall into the resonant cavity during the production, debugging and locking of the filter.

[0005] In order to solve the above technical problems, the first aspect of the present invention provides a tuning component, comprising:

[0006] A cover plate, provided with a plurality of rows of first threaded holes spaced apart along the width direction thereof, each of the first threaded holes in each row spaced apart along the length direction of the cover plate, the cover plate having a first side and a second side spaced apart and oppositely distributed, the cover plate being used to cover a bottom shell having a resonant cavity, the second side of the cover plate being in contact with the bottom shell, and the cover plate and the bottom shell being electrically conductive;

[0007] A plurality of first adjusting rods are provided and are threadedly assembled in the plurality of first threaded holes in a one-to-one correspondence, one of the hardness of the outer side of the first adjusting rod and the hardness of the inner wall of the first threaded hole is relatively large, and the other is relatively small, a plurality of resonators are provided in the resonant cavity in a one-to-one correspondence with the positions of the plurality of rows of the first threaded holes, the first adjusting rods are used to cooperate with the first threaded holes to adjust the length of the first adjusting rods extending into the resonator; and,

[0008] A first locking member is provided in plurality and is arranged one-to-one on the first adjusting rod. The first locking member is located on the first side of the cover plate. The first locking member is used to lock the first adjusting rod on the cover plate. The first locking member is electrically connected to the cover plate and the first adjusting rod respectively, and the first locking member is grounded.

[0009] Optionally, the inner wall of the first threaded hole is made of plastic, and the outer side of the first adjusting rod is made of metal.

[0010] Optionally, the cover plate includes:

[0011] A substrate, used for covering the bottom shell with the resonant cavity, wherein the substrate is made of plastic;

[0012] A first conductor layer is disposed on a first side surface of the substrate, the first locking member is electrically connected to the first conductor layer; and

[0013] A second conductor layer, disposed on a second side surface of the substrate, the second conductor layer being used for electrical conduction with the bottom shell;

[0014] The first threaded hole is provided on the substrate, and the first conductor layer and the second conductor layer are provided around the first threaded hole.

[0015] Optionally, the first adjusting rod comprises:

[0016] A first rod body is assembled in the first threaded hole and threadedly engaged with the first threaded hole; and

[0017] a first covering layer, covering the outer side of the first rod body, the first covering layer being made of metal, and the first covering layer being electrically connected to the first locking member and the cover plate respectively;

[0018] Wherein, the first rod body is made of metal or non-metal.

[0019] Optionally, a first side of the cover plate is provided with a plurality of first insulating regions distributed at intervals, and a plurality of the first threaded holes are provided in the plurality of first insulating regions in a one-to-one correspondence;

[0020] A portion of the first locking member contacts the first insulating region, and another portion of the first locking member contacts and is electrically connected to the cover plate.

[0021] Optionally, a difference between a diameter of an area where the first locking member contacts the first side of the cover plate and a diameter of the first insulating area ranges from 1 mm to 4 mm.

[0022] Optionally, a plurality of second insulating regions are provided at intervals on the second side of the cover plate, and a plurality of the first threaded holes are provided in the plurality of second insulating regions in a one-to-one correspondence.

[0023] Optionally, the cover plate is further provided with a plurality of second threaded holes located between two adjacent rows of the first threaded holes, and the plurality of second threaded holes are spaced apart and distributed along the length direction of the cover plate;

[0024] The tuning assembly further includes a plurality of second adjustment rods and a plurality of second locking members, wherein the plurality of second adjustment rods are threadedly assembled in the plurality of second threaded holes in a one-to-one correspondence, wherein the hardness of the outer side of the second adjustment rod and the hardness of the inner wall of the second threaded hole are relatively large, and the other is relatively small, wherein the plurality of second locking members are arranged in a one-to-one correspondence on the plurality of second adjustment rods, and the plurality of second locking members are located on the first side of the cover plate, wherein the second locking members are electrically connected to the cover plate and the second adjustment rods respectively, and the second locking members are grounded;

[0025] The second adjusting rod is used to cooperate with the second threaded hole to adjust the length of the second adjusting rod extending into the resonance cavity, and the second locking member is used to lock the second adjusting rod on the cover plate.

[0026] Optionally, a plurality of third insulating regions are provided at intervals on the first side of the cover plate, and a plurality of the second threaded holes are provided in the plurality of the third insulating regions in a one-to-one correspondence; a portion of the second locking member contacts the third insulating region, and another portion contacts the cover plate and is electrically conductive;

[0027] The second side of the cover plate is provided with a plurality of fourth insulating regions which are spaced apart from each other, and the plurality of second threaded holes are arranged in the plurality of fourth insulating regions in a one-to-one correspondence.

[0028] A second aspect of the present invention provides a filter, comprising:

[0029] A bottom shell having a resonant cavity;

[0030] The tuning component as described above is connected to the bottom shell and covers the resonant cavity; and

[0031] The resonator is arranged on the bottom shell and contained in the resonant cavity. There are a plurality of resonators, and the positions of the plurality of resonators on the bottom shell correspond to the positions of the plurality of rows of the first threads on the cover plate.

[0032] Compared with the related art, the tuning component and filter in the present invention have the following beneficial effects: when the first adjusting rod is rotated, since one of the hardness of the outer side of the first adjusting rod and the hardness of the inner wall of the first threaded hole is relatively large and the other is relatively small, the first adjusting rod and the inner wall of the first threaded hole can be effectively prevented from rubbing against each other to produce debris, thereby effectively preventing the intermodulation performance from being reduced due to the debris falling into the resonant cavity. Moreover, the bottom shell is electrically connected to the cover plate, the first locking member is electrically connected to the cover plate and the first adjusting rod respectively, and the first locking member is grounded, which can not only ground the first adjusting rod through the first locking member, but also realize the overall grounding of the filter, ensure the anti-interference ability, and improve the intermodulation performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0034] Figure 1 is a schematic diagram of the structure of a filter provided by an embodiment of the present invention;

[0035] Figure 2 is a schematic diagram of the assembly of the first adjusting rod, the first locking member and the cover plate provided in an embodiment of the present invention;

[0036] Figure 3 is a structural schematic diagram of a cover plate provided in one aspect of an embodiment of the present invention;

[0037] Figure 4 yes Figure 3 A magnified view of detail A;

[0038] Figure 5 is a structural schematic diagram of a cover plate provided in another aspect of an embodiment of the present invention;

[0039] Figure 6 yes Figure 5 Enlarged view of detail B.

[0040] In the accompanying drawings, the various reference numerals represent: 1. bottom shell; 11. resonant cavity; 2. cover plate; 21. first side; 22. first threaded hole; 23. first insulating area; 24. second insulating area; 25. second side; 26. second threaded hole; 27. third insulating area; 28. fourth insulating area; 29. ​​mounting hole; 3. first adjusting rod; 31. adjusting hole; 4. first locking piece; 5. second adjusting rod; 6. second locking piece; 7. resonator. DETAILED DESCRIPTION

[0041] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but are not to be construed as limiting the present invention. All other embodiments obtained by ordinary technicians in the field without creative work based on the embodiments of the present invention are within the scope of protection of the present invention.

[0042] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "circumferential", "radial" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0043] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0044] Example:

[0045] See also Figure 1 The embodiment of the present invention provides a filter, including a bottom shell 1, a tuning component and a resonator 7, wherein the bottom shell 1 is provided with a resonant cavity 11; the tuning component is connected to the bottom shell 1 and covers the resonant cavity 11; the resonator 7 is arranged in the bottom shell 1 and accommodated in the resonant cavity 11, and a plurality of resonators 7 are provided, and the plurality of resonators 7 divide the resonant cavity 11 into a plurality of cavities distributed at intervals. In a specific example, two resonators 7 are provided, and the two resonators 7 divide the resonant cavity 11 into three cavities distributed at intervals.

[0046] See also Figures 1 to 6The tuning assembly includes a cover plate 2, a first adjusting rod 3 and a first locking member 4. The cover plate 2 is provided with a plurality of rows of first threaded holes 22 spaced apart along its width direction. The first threaded holes 22 on each row are spaced apart along the length direction of the cover plate 2. The cover plate 2 has a first side 21 and a second side 25 spaced apart and relatively distributed. The cover plate 2 is used to cover the bottom shell 1 having the resonant cavity 11. The second side 25 of the cover plate 2 is in contact with the bottom shell 1, and the cover plate 2 and the bottom shell 1 are electrically conductive. The first adjusting rod 3 is provided with a plurality of first threaded holes 22 and is screwed and assembled in a corresponding manner. One of the hardness of the outer side of the first adjusting rod 3 and the hardness of the inner wall of the first threaded hole 22 is relatively large and the other is relatively small. The positions of the plurality of resonators 7 in the resonant cavity 11 are arranged in a corresponding manner to the positions of the plurality of rows of first threaded holes 22. The first adjusting rod 3 is used to cooperate with the first threaded hole 22 to adjust the length of the first adjusting rod 3 extending into the resonator 7. There are multiple first locking members 4 which are arranged one by one on the first adjusting rod 3. The first locking members 4 are located on the first side 21 of the cover plate 2. The first locking members 4 are used to lock the first adjusting rod 3 on the cover plate 2. The first locking members 4 are electrically connected to the cover plate 2 and the first adjusting rod 3 respectively, and the first locking members 4 are grounded.

[0047] When the first adjusting rod 3 is rotated, since one of the hardness of the outer side of the first adjusting rod 3 and the hardness of the inner wall of the first threaded hole 22 is relatively large and the other is relatively small, the first adjusting rod 3 and the inner wall of the first threaded hole 22 can be effectively prevented from rubbing against each other to produce debris, thereby effectively preventing the intermodulation performance from being reduced due to the debris falling into the resonant cavity 11. In addition, the bottom shell 1 is electrically connected to the cover plate 2, the first locking member 4 is electrically connected to the cover plate 2 and the first adjusting rod 3 respectively, and the first locking member 4 is grounded, which can not only ground the first adjusting rod 3 through the first locking member 4, but also realize the overall grounding of the filter, ensure the anti-interference ability, and improve the intermodulation performance.

[0048] See also Figure 2 In some embodiments, the first locking member 4 is sleeved on the outside of the first adjusting rod 3, and the first locking member 4 is threadedly engaged with the first adjusting rod 3, wherein the first locking member 4 can be a nut, and the outside of the first adjusting rod 3 is provided with a thread. Alternatively, one end of the first locking member 4 is connected to the cover plate 2, and the other end is buckled or clamped with the first adjusting rod 3, so as to lock the first adjusting rod 3 on the cover plate 2.

[0049] It should be noted that when the first locking member 4 does not lock the first adjusting rod 3 on the cover plate 2, the first adjusting rod 3 can be rotated to adjust the length of the first adjusting rod 3 extending into the resonator 7, and when the length of the first adjusting rod 3 extending reaches a preset target value, the first adjusting rod 3 is locked on the cover plate 2 by the first locking member 4. The outer side of the first adjusting rod 3 is provided with an external thread, and the first locking member 4 and the inner wall of the first threaded hole 22 are provided with an internal thread.

[0050] In some embodiments, the inner wall of the first threaded hole 22 is plastic, and the outer side of the first adjusting rod 3 is metal. The hardness of the plastic is less than the hardness of the metal, so that the hardness of the inner wall of the first threaded hole 22 is less than the hardness of the outer side of the first adjusting rod 3. Moreover, since the inner wall of the first threaded hole 22 is plastic, the formation of processing burrs can be avoided, thereby improving the intermodulation performance of the filter.

[0051] Of course, in other embodiments, the inner wall of the first threaded hole 22 can be made of metal, and the outer side of the first adjusting rod 3 in contact with the cover plate 2 can be made of plastic. Alternatively, the inner wall of the first threaded hole 22 can be made of metal, and the outer side of the first adjusting rod 3 can also be made of metal, and the hardness of the two can be set to be different.

[0052] The cover plate 2 includes a substrate, a first conductor layer and a second conductor layer. The substrate is used to cover the bottom shell 1 having the resonant cavity 11. The substrate is made of plastic, so that the weight of the substrate is relatively light, which is conducive to reducing the overall weight of the filter. The first conductor layer is arranged on the surface of the first side 21 of the substrate, and the first locking member 4 is electrically connected to the first conductor layer; the second conductor layer is arranged on the surface of the second side 25 of the substrate, and the second conductor layer is used to be electrically connected to the bottom shell 1, wherein the first threaded hole 22 is arranged on the substrate, and the first conductor layer and the second conductor layer are arranged around the first threaded hole 22 to achieve electrical conduction between the cover plate 2, the first adjustment rod 3 and the first locking member 4.

[0053] According to actual needs, the material of the substrate can be engineering plastics, such as PEI, PPS, etc. The substrate can be injection molded, and the first threaded hole 22 can be formed during injection molding or after injection molding; the first conductor layer and the second conductor layer can be metal layers, and the metal layers can be formed by metallizing the surface of the substrate, such as electroplating.

[0054] In some embodiments, the first threaded hole 22 is formed during the injection molding process of the substrate. When the first side 21 and the second side 25 of the substrate are surface metallized, the inner wall of the first threaded hole 22 is covered, for example, by using a rubber plug or a film to avoid metallization of the inner wall of the first threaded hole 22.

[0055] In some embodiments, the first threaded hole 22 is formed after the substrate is injection molded, the first side 21 and the second side 25 of the substrate are fully metallized, the metallization layer around the first threaded hole 22 is removed, and then the first threaded hole 22 is formed by machining.

[0056] It should be understood that the substrate can be formed by injection molding, and the first conductor layer and the second conductor layer can be formed by surface metallization, which is simple to process, highly efficient, and can reduce material costs.

[0057] The first adjustment rod 3 includes a first rod body and a first coating layer. The first rod body is assembled in the first threaded hole 22 and is threadedly engaged with the first threaded hole 22. The first coating layer covers the outer side of the first rod body. The first coating layer is made of metal. The first coating layer is electrically connected with the first locking member 4 and the cover plate 2. The first rod body is made of metal or non-metal. When the first rod body and the first coating layer are both made of metal, the first rod body and the first coating layer are integrally arranged, which is beneficial to the molding of the first adjustment rod 3. When the first rod body is non-metal, only the first coating layer is metal, which can reduce costs and is also beneficial to achieve a difference in hardness between the outer side of the first adjustment rod 3 and the inner wall of the first threaded hole 22.

[0058] According to actual needs, when the first rod body is non-metallic and the first coating layer is metal, the first coating layer can be formed by metallizing the surface of the first rod body, such as electroplating.

[0059] See also Figure 2 In some embodiments, an adjustment hole 31 is provided on the first adjustment rod 3, and the adjustment hole 31 is used to cooperate with an Allen wrench, so as to rotate the first adjustment rod 3 so that the first adjustment rod 3 cooperates with the first threaded hole 22 to achieve upward movement or downward movement.

[0060] See also Figure 2 , Figure 3 and Figure 4 The first side 21 of the cover plate 2 is provided with a plurality of first insulating regions 23 distributed at intervals, and the plurality of first threaded holes 22 are provided in the plurality of first insulating regions 23 in a one-to-one correspondence, that is, the diameter of the first insulating region 23 is larger than the major diameter of the first threaded hole 22, so that the first conductor layer is arranged around the first threaded hole 22. A portion of the first locking member 4 contacts the first insulating region 23, and another portion contacts and is electrically connected with the cover plate 2, that is, the diameter of the first locking member 4 is larger than the diameter of the first insulating region 23, and the first locking member 4 is electrically connected with the first conductor and the first adjusting rod 3, respectively.

[0061] It should be understood that the diameter of the first insulating area 23 is larger than the major diameter of the first threaded hole 22, but smaller than the diameter of the first locking piece 4. This design can not only effectively realize the effective non-metallization of the inner wall surface of the first threaded hole 22, but also realize the electrical conduction between the first adjusting rod 3 and the cover plate 2 through the first locking piece 4, and the electrical conduction between the cover plate 2 and the bottom shell 1, thereby forming a complete resonant cavity 11.

[0062] The difference between the diameter of the contact area between the first locking member 4 and the first side 21 of the cover plate 2 and the diameter of the first insulating area 23 ranges from 1 mm to 4 mm, for example, 1 mm, 2 mm, 3 mm, 4 mm, etc.

[0063] See also Figure 2 , Figure 5 and Figure 6 The second side 25 of the cover plate 2 is provided with a plurality of second insulating regions 24 distributed at intervals, and the plurality of first threaded holes 22 are provided in the plurality of second insulating regions 24 in a one-to-one correspondence. The second insulating regions 24 can prevent the generated metal debris from nonlinearly contacting the metal parts, thereby improving the intermodulation performance. According to actual needs, the diameter of the second insulating region 24 can be 0.5 mm, 0.8 mm, 1 mm, 1.2 mm, etc. larger than the median diameter of the first threaded hole 22.

[0064] See also Figure 1 , Figure 3 and Figure 5 , the cover plate 2 is also provided with a plurality of second threaded holes 26 located between two adjacent rows of first threaded holes 22, and the plurality of second threaded holes 26 are spaced apart along the length direction of the cover plate 2. The tuning assembly also includes a plurality of second adjusting rods 5 and a plurality of second locking members 6, and the plurality of second adjusting rods 5 are threadedly assembled in the plurality of second threaded holes 26 in a one-to-one correspondence, and one of the hardness of the outer side of the second adjusting rod 5 and the hardness of the inner wall of the second threaded hole 26 is relatively large, and the other is relatively small, which can effectively avoid the second adjusting rod 5 and the inner wall of the second threaded hole 26 from rubbing against each other to produce debris, thereby effectively preventing the intermodulation performance from being reduced due to the debris falling into the resonant cavity 11. The plurality of second locking members 6 are arranged in a one-to-one correspondence on the plurality of second adjusting rods 5, and the plurality of second locking members 6 are located on the first side 21 of the cover plate 2, and the second locking members 6 are electrically connected to the cover plate 2 and the second adjusting rod 5, respectively, and the second locking members 6 are grounded, so that the second adjusting rod 5 can be grounded through the second locking members 6, and the overall grounding of the filter can also be achieved, thereby ensuring the anti-interference capability and improving the intermodulation performance. The second adjusting rod 5 is used to cooperate with the second threaded hole 26 to adjust the length of the second adjusting rod 5 extending into the resonance cavity 11 , and the second locking member 6 is used to lock the second adjusting rod 5 on the cover plate 2 .

[0065] See also Figure 3 and Figure 4 In a specific example, the cover plate 2 is provided with two rows of first threaded holes 22 and one row of second threaded holes 26, and the row of second threaded holes 26 is distributed between the two rows of first threaded holes 22. The positions of the two rows of first threaded holes 22 on the cover plate 2 correspond to the positions of the two resonators 7 on the bottom shell 1, and the second adjustment rod 5 can extend into the resonant cavity 11 between the two resonators 7.

[0066] It should be noted that the first threaded hole 22 is a frequency adjustment threaded hole, the second threaded hole 26 is a coupling adjustment threaded hole, the first adjustment rod 3 cooperates with the first threaded hole 22, and the second adjustment rod 5 cooperates with the second threaded hole 26, so that the resonance frequency and the coupling coefficient can be effectively adjusted. Moreover, the second adjustment rod 5 is arranged in the same manner as the first adjustment rod 3, the second threaded hole 26 is arranged in the same manner as the first threaded hole 22, and the cooperation between the first adjustment rod 3 and the first threaded hole 22 is the same as the cooperation between the second adjustment rod 5 and the second threaded hole 26, and no repeated description is given here.

[0067] See also Figure 2 , Figure 3 and Figure 4 The first side 21 of the cover plate 2 is provided with a plurality of third insulating regions 27 distributed at intervals, and a plurality of second threaded holes 26 are provided in the plurality of third insulating regions 27 in a one-to-one correspondence, that is, the diameter of the third insulating region 27 is larger than the major diameter of the second threaded hole 26, so that the first conductor layer is arranged around the second threaded hole 26. A portion of the second locking member 6 contacts the third insulating region 27, and another portion contacts and is electrically connected with the cover plate 2; that is, the diameter of the second locking member 6 is larger than the diameter of the third insulating region 27, and the second locking member 6 is electrically connected with the first conductor and the second adjusting rod 5, respectively.

[0068] It should be understood that the diameter of the third insulating area 27 is larger than the major diameter of the second threaded hole 26, but smaller than the diameter of the second locking piece 6. This design can not only effectively realize the effective non-metallization of the inner wall surface of the second threaded hole 26, but also realize the electrical conduction between the second adjusting rod 5 and the cover plate 2 through the second locking piece 6, and the electrical conduction between the cover plate 2 and the bottom shell 1, thereby forming a complete resonant cavity 11.

[0069] See also Figure 2 , Figure 5 and Figure 6 The second side 25 of the cover plate 2 is provided with a plurality of fourth insulating regions 28 distributed at intervals, and a plurality of second threaded holes 26 are provided in the plurality of fourth insulating regions 28 in a one-to-one correspondence. The fourth insulating regions 28 can avoid nonlinear contact between metal debris and metal parts, thereby improving intermodulation performance.

[0070] It should be noted that the outer surfaces of the first locking member 4 and the second locking member 6 may be plated with a high-conductivity electroplating layer to improve the conductivity, thereby reducing the nonlinearity of the conductor and further improving the intermodulation performance of the filter. For example, the first conductor layer and the second conductor layer may be copper layers, and the electroplating layer on the outer sides of the first locking member 4 and the second locking member 6 may be a silver layer. Moreover, after the filter is debugged, an organic coating may be sprayed on the surface of the first side 21 of the cover plate 2 to prevent the first conductor layer of the cover plate 2 from being oxidized and corroded, resulting in performance degradation.

[0071] In some embodiments, the cover plate 2 and the bottom shell 1 can be connected in a detachable manner, such as by screws, or in a fixed manner, such as by brazing. Welding can improve the continuity of electrical conduction between the cover plate 2 and the bottom shell 1, thereby improving the filter performance.

[0072] See also Figure 3 and Figure 5 In a specific example, the cover plate 2 is further provided with a mounting hole 29, the inner wall of the mounting hole 29 is metallized, a third locking member is provided in the mounting hole 29, a connecting hole is provided on the bottom shell 1, and the third locking member is screwed with the connecting hole, so as to lock the cover plate 2 on the bottom shell 1. The third locking member can be a screw, and the connecting hole can be a threaded hole.

[0073] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A tuning component, characterized in that: include: A cover plate, provided with a plurality of rows of first threaded holes spaced apart along the width direction thereof, each of the first threaded holes in each row spaced apart along the length direction of the cover plate, the cover plate having a first side and a second side spaced apart and oppositely distributed, the cover plate being used to cover a bottom shell having a resonant cavity, the second side of the cover plate being in contact with the bottom shell, and the cover plate and the bottom shell being electrically conductive; A plurality of first adjusting rods are provided and are threadedly assembled in the plurality of first threaded holes in a one-to-one correspondence, one of the hardness of the outer side of the first adjusting rod and the hardness of the inner wall of the first threaded hole is relatively large, and the other is relatively small, a plurality of resonators are provided in the resonant cavity in a one-to-one correspondence with the positions of the plurality of rows of the first threaded holes, the first adjusting rods are used to cooperate with the first threaded holes to adjust the length of the first adjusting rods extending into the resonator; and, A first locking member is provided in plurality and is arranged one-to-one on the first adjusting rod. The first locking member is located on the first side of the cover plate. The first locking member is used to lock the first adjusting rod on the cover plate. The first locking member is electrically connected to the cover plate and the first adjusting rod respectively, and the first locking member is grounded.

2. The tuning assembly according to claim 1, characterized in that The inner wall of the first threaded hole is made of plastic, and the outer side of the first adjusting rod is made of metal.

3. The tuning assembly according to claim 1 or 2, characterized in that: The cover plate comprises: A substrate, used for covering the bottom shell with the resonant cavity, wherein the substrate is made of plastic; A first conductor layer is disposed on a first side surface of the substrate, the first locking member is electrically connected to the first conductor layer; and A second conductor layer, disposed on a second side surface of the substrate, the second conductor layer being used for electrical conduction with the bottom shell; The first threaded hole is provided on the substrate, and the first conductor layer and the second conductor layer are provided around the first threaded hole.

4. The tuning assembly according to claim 1 or 2, characterized in that: The first adjusting rod comprises: A first rod body is assembled in the first threaded hole and threadedly engaged with the first threaded hole; and a first covering layer, covering the outer side of the first rod body, the first covering layer being made of metal, and the first covering layer being electrically connected to the first locking member and the cover plate respectively; Wherein, the first rod body is made of metal or non-metal.

5. The tuning assembly according to claim 1, wherein: The first side of the cover plate is provided with a plurality of first insulating areas which are spaced apart from each other, and the plurality of first threaded holes are provided in the plurality of first insulating areas in a one-to-one correspondence; A portion of the first locking member contacts the first insulating region, and another portion of the first locking member contacts and is electrically connected to the cover plate.

6. The tuning assembly according to claim 5, characterized in that The difference between the diameter of the area where the first locking member contacts the first side of the cover plate and the diameter of the first insulating area is in the range of 1 mm to 4 mm.

7. The tuning assembly according to claim 1, wherein: The second side of the cover plate is provided with a plurality of second insulating regions which are spaced apart from each other, and the plurality of first threaded holes are arranged in the plurality of second insulating regions in a one-to-one correspondence.

8. The tuning assembly according to claim 1, wherein: The cover plate is also provided with a plurality of second threaded holes located between two adjacent rows of the first threaded holes, and the plurality of second threaded holes are distributed at intervals along the length direction of the cover plate; The tuning assembly further includes a plurality of second adjustment rods and a plurality of second locking members, wherein the plurality of second adjustment rods are threadedly assembled in the plurality of second threaded holes in a one-to-one correspondence, wherein the hardness of the outer side of the second adjustment rod and the hardness of the inner wall of the second threaded hole are relatively large, and the other is relatively small, wherein the plurality of second locking members are arranged in a one-to-one correspondence on the plurality of second adjustment rods, and the plurality of second locking members are located on the first side of the cover plate, wherein the second locking members are electrically connected to the cover plate and the second adjustment rods respectively, and the second locking members are grounded; The second adjusting rod is used to cooperate with the second threaded hole to adjust the length of the second adjusting rod extending into the resonance cavity, and the second locking member is used to lock the second adjusting rod on the cover plate.

9. The tuning assembly according to claim 8, characterized in that The first side of the cover plate is provided with a plurality of third insulating areas which are spaced apart from each other, and the plurality of second threaded holes are provided in the plurality of third insulating areas in a one-to-one correspondence; a portion of the second locking member is in contact with the third insulating area, and another portion of the second locking member is in contact with the cover plate and is electrically conductive; The second side of the cover plate is provided with a plurality of fourth insulating regions which are spaced apart from each other, and the plurality of second threaded holes are arranged in the plurality of fourth insulating regions in a one-to-one correspondence.

10. A filter, characterized in that: include: A bottom shell having a resonant cavity; The tuning component according to any one of claims 1 to 9, connected to the bottom shell and covering the resonant cavity; as well as, The resonator is arranged on the bottom shell and contained in the resonant cavity. There are a plurality of resonators, and the positions of the plurality of resonators on the bottom shell correspond to the positions of the plurality of rows of the first threads on the cover plate.

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