filter

Abstract

This application discloses a filter comprising a body, a resonant rod, a cover plate, and a tuning screw. The body has a receiving cavity with an opening on one side. The resonant rod is disposed within the receiving cavity and has a resonant cavity facing the opening. A plurality of heat dissipation holes are evenly distributed on the wall of the resonant rod. The cover plate covers the opening and has through holes. At least a portion of the tuning screw passes through the through holes and is placed within the resonant cavity. This configuration improves the heat dissipation performance of the filter and extends the service life of the resonant rod.

Description

Technical Field

[0001] This utility model relates to the field of electronic equipment, and in particular to a filter. Background Technology

[0002] In existing technologies, cavity filters have become a crucial component of wireless communication. A typical cavity filter consists of input / output ports, a cavity, a resonator, a cover plate, and tuning screws. Among these components, the resonator rod is a critical part. If the resonator rod's heat dissipation is inadequate, it can easily break down under high power conditions, leading to filter damage and malfunction.

[0003] Therefore, it is necessary to provide a filter to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a filter that improves the heat dissipation performance of the resonant rod.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A filter, comprising:

[0007] The body has a receiving cavity, and one side of the receiving cavity has an opening;

[0008] A resonant rod is disposed within the receiving cavity. The resonant rod has a resonant cavity facing the opening. The wall of the resonant rod is provided with a plurality of heat dissipation holes.

[0009] A cover plate, covering the opening, the cover plate having a through hole;

[0010] The tuning screw, at least a portion of which passes through the through hole and is placed inside the resonant cavity.

[0011] Furthermore, the resonant rod includes a first main body portion, which is a hollow cylinder. The first main body portion contains the resonant cavity, and a plurality of heat dissipation holes form a first row of heat dissipation holes along the axial direction of the first main body portion.

[0012] Furthermore, the two opposing columns of the first column of heat dissipation holes are symmetrically arranged along the axis of the first main body.

[0013] Furthermore, the resonant rod also includes a second main body portion. The first main body portion includes a first end and a second end disposed opposite to each other. The second main body portion extends outward from the first end of the first main body portion in an annular shape. The heat dissipation hole also includes a plurality of second columns of heat dissipation holes. Each column of the second column of heat dissipation holes is arranged in a straight line along the diameter direction of the second main body portion. The arrangement direction of the second column of heat dissipation holes is perpendicular to the arrangement direction of the first column of heat dissipation holes.

[0014] Furthermore, the resonant rod also includes a third main body portion, which extends downward in a ring shape from the other side edge of the second main body portion. The heat dissipation hole also includes a plurality of third column heat dissipation holes, each column of the third column of heat dissipation holes being arranged in a straight line along the radial direction of the third main body portion, and the arrangement direction of the third column of heat dissipation holes being perpendicular to the arrangement direction of the second column of heat dissipation holes.

[0015] Furthermore, the first main body, the second main body, and the third main body are integrally formed or connected separately.

[0016] Furthermore, the heat dissipation holes are circular or irregular in shape.

[0017] Furthermore, the surface of the resonant rod is provided with a metal electroplating layer.

[0018] Furthermore, the resonant rod is formed by stamping, die casting, injection molding, or powder molding.

[0019] Furthermore, the second end of the first main body has a connecting portion, which is connected to the main body.

[0020] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0021] This application discloses a filter, which includes a body, a resonant rod, a cover plate, and a tuning screw. The body has a receiving cavity with an opening on one side. The resonant rod is disposed within the receiving cavity and has a resonant cavity facing the opening. Several heat dissipation holes are evenly distributed on the wall of the resonant rod. The cover plate covers the opening and has through holes through which at least a portion of the tuning screw passes into the resonant cavity. By providing heat dissipation holes on the wall of the resonant rod, the heat dissipation performance of the resonant rod is improved, preventing the temperature of the receiving cavity from becoming too high and damaging the resonant rod, thus affecting the normal operation of the filter. Attached Figure Description

[0022] Figure 1 This is a three-dimensional schematic diagram of the filter in this application;

[0023] Figure 2 This is a partially enlarged three-dimensional exploded view of the body and resonant rod in this application;

[0024] Figure 3 This is a magnified cross-sectional view of the filter in this application;

[0025] Figure 4 This is a three-dimensional schematic diagram of one embodiment of the resonant rod in this application;

[0026] Figure 5 yes Figure 4 A three-dimensional diagram from another angle;

[0027] Figure 6 This is a perspective schematic diagram of another embodiment of the resonant rod in this application;

[0028] Figure 7 yes Figure 6 A three-dimensional diagram from another angle;

[0029] Figure 8 This is a perspective schematic diagram of another embodiment of the resonant rod in this application;

[0030] Figure 9 yes Figure 8 Another perspective of the three-dimensional diagram. Detailed Implementation

[0031] The exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. If several embodiments exist, features in these embodiments may be combined with each other without conflict. When the description refers to the drawings, unless otherwise stated, the same numbers in different drawings represent the same or similar elements. The descriptions in the following exemplary embodiments do not represent all embodiments consistent with the present invention; rather, they are merely examples of apparatuses, products, and / or methods consistent with some aspects of the present invention as set forth in the claims.

[0032] The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to limit the scope of protection of this invention. The singular forms “a,” “the,” or “the” used in the specification and claims of this invention are also intended to include the plural forms, unless the context clearly indicates otherwise.

[0033] Please refer to Figures 1 to 9 This application discloses a filter 100, which includes a body 1, a resonant rod 2, a cover plate 3, and an adjusting screw 4. The body 1 has a receiving cavity 101, with an opening 102 on one side. The resonant rod 2 is disposed within the receiving cavity 101, and has a resonant cavity 202 facing the opening 102. A plurality of heat dissipation holes 201 are evenly distributed on the wall of the resonant rod 2. The cover plate 3 covers the opening 102 and has through holes, through which at least a portion of the adjusting screw 4 passes and is placed within the resonant cavity 202. By providing heat dissipation holes 201 on the wall of the resonant rod 2, the heat dissipation performance of the resonant rod 2 is improved, preventing the temperature of the receiving cavity 101 from becoming too high and damaging the resonant rod 2, thus affecting the normal operation of the filter 100.

[0034] Please refer to Figures 2 to 5In one embodiment, the resonant rod 2 includes a first main body 22, which is a hollow cylinder. The first main body 22 contains a resonant cavity 202, and a plurality of heat dissipation holes 201 form a first row of heat dissipation holes 2001 along the axial direction of the first main body 22. The plurality of first row heat dissipation holes 2001 are evenly arranged circumferentially around the first main body 22. By providing a plurality of first row heat dissipation holes 2001 on the first main body 22, not only can the heat dissipation performance of the first main body 22 be improved, but the service life of the resonant rod 2 can also be extended, preventing the resonant rod 2 from overheating and breaking down, thus affecting the overall performance of the filter 100. The symmetrical arrangement of two opposing first row heat dissipation holes 2001 along the axis of the first main body 22 further enhances the uniformity of heat dissipation performance of the resonant rod 2.

[0035] Please refer to Figures 4 to 5 as well as Figures 8 to 9 In one embodiment, the heat dissipation hole 201 is circular. The diameter of the circular heat dissipation hole 201 is adjusted according to the specifications of the filter 100, effectively improving the field strength and preventing the resonant rod 2 from being broken down due to high temperature. This allows the resonant rod 2 to effectively cool down in high-power, high-heat environments, ensuring the normal operation of the filter 100. In other embodiments, the heat dissipation hole 201 is irregularly shaped. The irregularly shaped heat dissipation hole 201 allows for greater adaptability of the resonant rod 2, adapting to filters 100 with different power ratings and reducing costs. Specifically, the irregularly shaped heat dissipation hole 201 can be rectangular, elliptical, triangular, or polygonal, and is not limited here.

[0036] In another embodiment, the resonant rod 2 further includes a second main body 23. The first main body 22 includes a first end 221 and a second end 222 disposed opposite to each other. The second main body 23 extends outward from the first end 221 of the first main body 22 in a ring shape. The heat dissipation hole 201 also includes a plurality of second rows of heat dissipation holes 2002, each second row of heat dissipation holes 2002 being arranged in a straight line along the diameter direction of the second main body 23. Specifically, the second main body 23 has a hollow ring structure, and the inner ring of the second main body 23 is perpendicularly connected to the first end 221 of the first main body 22. The plurality of second rows of heat dissipation holes 2002 are evenly arranged along the circumferential direction of the second main body 23, and the arrangement direction of the second row of heat dissipation holes 2002 is perpendicular to the arrangement direction of the first row of heat dissipation holes 2001. This arrangement not only improves the heat dissipation performance of the second main body 23 and extends the service life of the resonant rod 2, but also prevents the resonant rod 2 from overheating and breaking down, thus affecting the overall performance of the filter 100.

[0037] Please refer to Figures 6 to 9In another embodiment, the resonant rod 2 further includes a third main body 24, which extends downward in a ring shape from the other edge of the second main body 23. The heat dissipation holes 201 also include a plurality of third-row heat dissipation holes 2003, each row of which is arranged in a straight line along the radial direction of the third main body 24. Specifically, the third main body 24 has a hollow annular structure, with one side of the third main body 24 perpendicularly connected to the outer ring of the second main body 23. The plurality of third-row heat dissipation holes 2003 are evenly arranged along the circumference of the third main body 24, and the arrangement direction of the third-row heat dissipation holes 2003 is perpendicular to the arrangement direction of the second-row heat dissipation holes 2002. This arrangement not only improves the heat dissipation performance of the second main body 23 and extends the service life of the resonant rod 2, but also prevents the resonant rod 2 from overheating and breaking down, thus affecting the overall performance of the filter 100.

[0038] In one embodiment of this application, the positions of the first row of heat dissipation holes 2001, the second row of heat dissipation holes 2002, and the third row of heat dissipation holes 2003 can also be adjusted as needed. While improving the heat dissipation performance of the resonant rod 2, it can also improve the peak power and average power of the resonant rod 2. The overall weight of a single resonant rod 2 in this embodiment is reduced by 20-30% compared to a resonant rod 2 without heat dissipation holes 201. Thus, when multiple resonant rods 2 as in this embodiment are provided within the body 1, the overall weight of the filter 100 can be reduced, achieving the goal of lightweighting the filter 100.

[0039] The first main body 22, the second main body 23, and the third main body 24 are integrally formed. Specifically, the resonant rod 2 is formed by stamping, die casting, injection molding, or powder molding, and no limitation is made here. This improves the overall structural strength of the resonant rod 2. In other embodiments, the first main body 22, the second main body 23, and the third main body 24 are separately arranged. Specifically, the first main body 22, the second main body 23, and the third main body 24 are connected by welding.

[0040] The surface of the resonant rod 2 is coated with a metal plating layer. Specifically, the metal plating layer includes, but is not limited to, gold, silver, and copper. This improves the wear resistance and corrosion resistance of the resonant rod 2, and further enhances its hardness and strength.

[0041] Please refer to Figures 2 to 4The second end 222 of the first main body 22 has a connecting portion 223, which is connected to the main body 1. In one embodiment, the main body 1 includes a bottom wall 11 and a side wall 12, the side wall 12 being connected to the edge of the bottom wall 11, and the side wall 12 and the bottom wall 11 forming a receiving cavity 101. In one embodiment, the bottom wall 11 has a boss portion 111, the boss portion 111 having a groove 103, and the connecting portion 223 of the resonant rod 2 having a protrusion 2231, which is inserted into the groove 103 to connect the resonant rod 2 to the boss portion 111. In another embodiment, the connecting portion 223 has a connecting hole 203, and the filter 100 also includes a fastener, which passes through the connecting hole 203 and connects to the bottom wall 11. This allows the resonant rod 2 to be fixed to the bottom wall 11.

[0042] In this embodiment, the resonant rod 2 comprises several units, which are disposed within the receiving cavity 101. By evenly distributing several heat dissipation holes 201 on the walls of the resonant rod 2, the overall temperature of the filter 100 can be effectively reduced, the field strength improved, and the resonant rod 2 prevented from being broken down. Simultaneously, the overall weight of the filter 100 can also be reduced, enabling the filter 100 to meet the requirements of product lightweighting.

[0043] In summary, this application discloses a filter 100, which includes a body 1, a resonant rod 2, a cover plate 3, and an adjusting screw 4. The body 1 has a receiving cavity 101, with an opening 102 on one side. The resonant rod 2 is disposed within the receiving cavity 101, and has a resonant cavity 202 facing the opening 102. A plurality of heat dissipation holes 201 are evenly distributed on the wall of the resonant rod 2. The cover plate 3 covers the opening 102 and has through holes, through which at least a portion of the adjusting screw 4 passes and is placed within the resonant cavity 202. By providing heat dissipation holes 201 on the wall of the resonant rod 2, the heat dissipation performance of the resonant rod 2 is improved, preventing the temperature of the receiving cavity 101 from becoming too high and damaging the resonant rod 2, thus affecting the normal operation of the filter 100.

[0044] It should be understood that the terms "first," "second," and similar words used in the specification and claims of this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish the features. Similarly, the terms "an" or "a" do not indicate a quantity limitation, but rather indicate the presence of at least one. Unless otherwise stated, the terms "before," "after," "upper," "lower," and similar words appearing in this utility model are for ease of explanation only and are not limited to a specific location or spatial orientation. The terms "comprising" or "including" are an open-ended expression, meaning that the element preceding "comprising" or "including" covers the element following "comprising" or "including" and its equivalents, which does not exclude that the element preceding "comprising" or "including" may also include other elements. In this utility model, the word "several" means two or more.

[0045] The above embodiments are only for illustration and not for limiting the technical solutions described in this utility model. The understanding of this specification should be based on those skilled in the art. For example, the directional descriptions such as "front", "back", "left", "right", "up", and "down" are important. Although this specification has described the present invention in detail with reference to the above embodiments, those skilled in the art should understand that they can still make modifications or equivalent substitutions to this utility model. All technical solutions and improvements that do not depart from the spirit and scope of this utility model should be covered within the scope of the claims of this utility model.

Claims

1. A filter, characterized by, include: The body (1) has a receiving cavity (101) and an opening (102) on one side of the receiving cavity (101); A resonant rod (2) is disposed in the receiving cavity (101). The resonant rod (2) has a resonant cavity (202) facing the opening (102). The wall of the resonant rod (2) is provided with a plurality of heat dissipation holes (201). A cover plate (3) covers the opening (102), and the cover plate (3) has a through hole; The tuning screw (4) is at least partially placed inside the resonant cavity (202) through the through hole.

2. The filter of claim 1, wherein: The resonant rod (2) includes a first main body (22), which is a hollow cylinder. The first main body (22) has the resonant cavity (202) inside, and a plurality of heat dissipation holes (201) form a first row of heat dissipation holes (2001) along the axial direction of the first main body (22).

3. The filter of claim 2, wherein: The two opposing columns of the first column of heat dissipation holes (2001) are symmetrically arranged along the axis of the first main body (22).

4. The filter of claim 3, wherein: The resonant rod (2) further includes a second main body (23). The first main body (22) includes a first end (221) and a second end (222) disposed opposite to each other. The second main body (23) extends outward from the first end (221) of the first main body (22) in an annular shape. The heat dissipation hole (201) further includes a plurality of second column heat dissipation holes (2002). Each column of second column heat dissipation holes (2002) is arranged in a straight line along the diameter direction of the second main body (23). The arrangement direction of the second column heat dissipation holes (2002) is perpendicular to the arrangement direction of the first column heat dissipation holes (2001).

5. The filter of claim 4, wherein: The resonant rod (2) also includes a third main body (24), which extends downward from the other side edge of the second main body (23) in a ring shape. The heat dissipation hole (201) also includes a plurality of third column heat dissipation holes (2003). Each column of the third column heat dissipation holes (2003) is arranged in a straight line along the radial direction of the third main body (24), and the arrangement direction of the third column heat dissipation holes (2003) is perpendicular to the arrangement direction of the second column heat dissipation holes (2002).

6. The filter of claim 5, wherein: The first main body (22), the second main body (23) and the third main body (24) are integrally formed or connected separately.

7. The filter of claim 1, wherein: The heat dissipation hole (201) is circular or irregular in shape.

8. The filter of claim 1, wherein: The surface of the resonant rod (2) is provided with a metal electroplating layer.

9. The filter of claim 1, wherein: The resonant rod (2) is formed by stamping, die casting, injection molding, or powder molding.

10. The filter of claim 4, wherein: The second end (222) of the first main body (22) has a connecting part (223) which is connected to the main body (1).

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