CN220604946U

CN220604946U - Sheet metal filter

Info

Publication number: CN220604946U
Application number: CN202322113541.2U
Authority: CN
Inventors: 成钢; 高阳; 罗宇; 陈发剑; 汪鑫; 唐志岗
Original assignee: Tongyu Communication Inc
Current assignee: Tongyu Communication Inc
Priority date: 2023-08-07
Filing date: 2023-08-07
Publication date: 2024-03-15
Anticipated expiration: 2033-08-07

Abstract

The utility model discloses a sheet metal filter, which comprises a cavity, wherein the cavity is of a sheet metal integrated structure, the top of the cavity is open, and an input through hole and an output through hole which are respectively communicated with the outside and the inside of the cavity are formed in the front side part of the cavity; the PIN separation rib, the resonance piece and the flying rod wire are respectively arranged in the cavity, and the two PIN needles respectively penetrate through the input through hole and the output through hole to be respectively connected with the resonance piece; the cover plate is connected with the cavity, the sheet metal stamping stretching and bending are mature processes, the cavity meeting the dimensional and form and position tolerance can be obtained, CNC machining is not needed, and compared with the traditional process, the production capacity is greatly improved, and CNC cost and production capacity limitation can be saved.

Description

Sheet metal filter

Technical Field

The utility model relates to the technical field of filters, in particular to a sheet metal filter.

Background

The filter is a typical frequency selection device, and can effectively inhibit useless signals, so that the useless signals can not pass through the filter, and only useful signals can smoothly pass through the filter, therefore, the quality of the whole communication system is directly influenced by the performance of the filter, and the filter is a vital device in modern microwave and millimeter wave communication systems. The communication base station filter structure is generally composed of a cavity, a resonator, a cavity cover plate, a screw adjusting device and an input and output connector, a traditional die casting cavity, a stamping resonator and a screw adjusting device are used for years, the traditional die casting cavity is formed through an aluminum alloy die casting process, CNC processing is needed to be carried out subsequently, the size is difficult to miniaturize, the cost is high, the production efficiency is low, in the 5G and later times, the communication base station has higher and higher requirements on the miniaturization, the light weight and the low cost of the filter, and the traditional process has hardly met higher requirements of customers.

Disclosure of Invention

The utility model aims to at least solve one of the technical problems in the prior art and provides a sheet metal filter which is convenient to process and low in cost.

The sheet metal filter comprises a cavity, wherein the cavity is of a sheet metal integrated structure, the top of the cavity is open, and an input through hole and an output through hole which are respectively communicated with the outside and the inside of the cavity are formed in the front side of the cavity; the PIN separation rib, the resonance piece and the flying rod wire are respectively arranged in the cavity, and the two PIN needles respectively penetrate through the input through hole and the output through hole to be respectively connected with the resonance piece; and the cover plate is connected with the cavity to cover the opening of the cavity.

According to the sheet metal filter provided by the embodiment of the utility model, the spacer comprises the first spacer and the second spacer, the first spacer is parallel to the front side, the second spacer is respectively and vertically connected with the front side and the first spacer, the second spacer is positioned between the input through hole and the output through hole, the interior of the cavity is divided into a spacer region and other regions, wherein the spacer region is a region among the first spacer, the second spacer and the front side, and the resonance parts are respectively distributed in the spacer region and the other regions.

According to the sheet metal filter provided by the embodiment of the utility model, the second spacer rib is vertically connected with the middle part of the first spacer rib, the spacer rib area comprises a first area and a second area, and the second spacer rib is positioned between the first area and the second area.

According to the sheet metal filter provided by the embodiment of the utility model, the resonant piece comprises the horizontal part, the first bending part connected with one end of the horizontal part and the second bending part connected with the other end of the horizontal part, the first bending part extends to the first area, the second bending part extends to the second area, and the horizontal part is positioned in the other areas.

According to the sheet metal filter provided by the embodiment of the utility model, the separation rib comprises the third separation rib, the cross section of the third separation rib is V-shaped, and the third separation rib is positioned in the other area.

According to the sheet metal filter provided by the embodiment of the utility model, the flying bar line comprises a first flying bar line, a second flying bar line and a third flying bar line, the first flying bar line is arranged in the first area and is coupled with the first bending part, the second flying bar line and the third flying bar line are respectively arranged in the other areas, the second flying bar line is respectively coupled with the second bending part and the third separating rib, and the third flying bar line is coupled with the horizontal part.

According to the sheet metal filter provided by the embodiment of the utility model, the sheet metal filter further comprises PIN needle media for supporting the PIN needles, wherein the PIN needle media are respectively arranged in the input through hole and the output through hole, and the two PIN needles are respectively inserted into the corresponding PIN needle media.

The sheet metal filter provided by the embodiment of the utility model has at least the following beneficial effects: because the cavity is of a sheet metal integrated structure, the sheet metal stamping stretching and bending are mature processes, the cavity meeting the dimensional and form and position tolerance can be obtained, CNC processing is not needed, compared with the traditional process, the productivity is greatly improved, CNC cost and productivity limitation can be saved, the cost is reduced, and the alloy material adopted by the sheet metal integrated structure is light in weight, so that the miniaturized filter cavity can be conveniently manufactured; the separation rib, the resonance piece and the flying rod wire are fixed in the cavity in a welding mode.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The following describes the embodiments of the present utility model further with reference to the drawings;

FIG. 1 is a block diagram of a sheet metal filter;

FIG. 2 is an exploded view of a sheet metal filter;

FIG. 3 is a diagram of the internal structure of the cavity of the sheet metal filter;

fig. 4 is a cross-sectional view of a sheet metal filter.

Detailed Description

Reference will now be made in detail to the present embodiments of the present utility model, examples of which are illustrated in the accompanying drawings, wherein the accompanying drawings are used to supplement the description of the written description so that one can intuitively and intuitively understand each technical feature and overall technical scheme of the present utility model, but not to limit the scope of the present utility model.

In the description of the present utility model, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

Referring to fig. 1 to 4, the sheet metal filter of the present utility model includes a cavity 10, a spacer, a resonant member 14, a flying bar wire, two PIN needles 15 and a cover plate 20, wherein the cavity 10 is of a sheet metal integrated structure, the top of the cavity 10 is opened, and an input through hole 12 and an output through hole 13 which are respectively communicated with the outside and the inside of the cavity 10 are arranged on the front side 11 of the cavity 10; the separation rib, the resonance piece 14 and the flying lever wire are respectively arranged in the cavity 10, and the two PIN needles 15 respectively pass through the input through hole 12 and the output through hole 13 to be respectively connected with the resonance piece 14; the edge of the cover plate 20 is provided with an annular step 21, and the opening of the cavity 10 is abutted against the annular step 21 so as to connect the cover plate 20 with the cavity 10; because the cavity 10 is of a sheet metal integrated structure, the sheet metal stamping stretching and bending are mature processes, the cavity 10 meeting the dimensional and form and position tolerance can be obtained, CNC processing is not needed, compared with the traditional process, the productivity is greatly improved, CNC cost and productivity limitation can be saved, the cost is reduced, and the alloy material adopted by the sheet metal integrated structure is light in weight, so that the miniaturized filter cavity 10 can be conveniently manufactured; the spacer ribs, the resonant members 14 and the flying beam wires are fixed inside the cavity 10 in a welding mode, the annular step 21 is arranged at the edge of the cover plate 20, the annular step 21 facilitates welding of the cover plate 20 and the cavity 10, and meanwhile, the limiting effect is achieved, so that the relative positions of the cover plate 20 and the cavity 10 are accurate.

As shown in fig. 2 and 3, the barrier rib includes a first barrier rib 31, a second barrier rib 32 and a third barrier rib 33, the first barrier rib 31 is parallel to the front side 11, the second barrier rib 32 is respectively vertically connected with the front side 11 and the middle of the first barrier rib 31, the second barrier rib 32 is positioned between the input through hole 12 and the output through hole 13, the interior of the cavity 10 is divided into barrier rib regions and other regions, wherein the barrier rib regions are regions between the first barrier rib 31, the second barrier rib 32 and the front side 11, the barrier rib regions include a first region 100 and a second region 200, the second barrier rib 32 is positioned between the first region 100 and the second region 200, the resonator 14 includes a horizontal portion, a first bent portion connected with one end of the horizontal portion and a second bent portion connected with the other end of the horizontal portion, the first bent portion extends to the first region 100, the second bent portion extends to the second region 200, and the horizontal portion is positioned in the other regions; the cross section of the third separation rib 33 is V-shaped, and the third separation rib 33 is positioned in the other area; the flying bar wires include a first flying bar wire 161, a second flying bar wire 162, and a third flying bar wire 163, the first flying bar wire 161 being disposed in the first region 100 and coupled to the first bent portion, the second flying bar wire 162 and the third flying bar wire 163 being disposed in the other regions, respectively, the second flying bar wire 162 being coupled to the second bent portion and the third spacer rib 33, respectively, and the third flying bar wire 163 being coupled to the horizontal portion.

In some embodiments, the second barrier ribs 32 are respectively connected perpendicularly to the front side 11 and the ends of the first barrier ribs 31, the second barrier ribs 32 are located between the input through hole 12 and the output through hole 13, the interior of the cavity 10 is divided into barrier rib regions and other regions, wherein the barrier rib regions are regions between the first barrier ribs 31, the second barrier ribs 32 and the front side 11, and the resonators 14 are respectively distributed in the barrier rib regions and the other regions.

As shown in fig. 2 and 4, the PIN needle medium 151 for supporting the PIN needles 15 is further included, the PIN needle medium 151 is respectively provided in the input through hole 12 and the output through hole 13, and the two PIN needles 15 are respectively inserted in the corresponding PIN needle medium 151.

The cavity 10 is integrally formed through sheet metal stretching, the resonant piece 14 and the separation rib are respectively welded with the inside of the cavity 10, the end part of the PIN needle 15 is welded to the resonant piece 14, the cover plate 20 is welded with the opening of the cavity 10, and the end part of the separation rib is welded with the cover plate 20 through penetration welding; the integrated electroplating can be carried out; the welding between the first barrier rib 31 and the second barrier rib 32 is seam welding, and the welding between the cover plate 20 and the cavity 10 includes penetration welding and seam welding, wherein the penetration welding is performed from the front surface of the cover plate 20 to the cavity 10, and the seam welding is performed at the gap between the cover plate 20 and the cavity 10.

The cavity 10 assembly comprises a resonant piece 14, a separation rib, a flying rod wire and a PIN needle 15, the cavity 10 assembly and the cover plate 20 can be electroplated separately and then welded, and the welding mode can be through solder paste, for example, laser welding, and only the plating layer at the welding position of the cover plate 20 needs to be etched away or shielded before electroplating.

It will be readily appreciated by those skilled in the art that the above preferred modes can be freely combined and superimposed without conflict.

The foregoing description of the preferred embodiments of the present utility model should not be construed as limiting the scope of the utility model, but rather should be understood to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the utility model as defined by the following description and drawings or any application directly or indirectly to other relevant art(s).

Claims

1. A sheet metal filter, comprising:

the cavity (10), cavity (10) are panel beating integral type structure, the open-top of cavity (10), preceding lateral part (11) of cavity (10) are equipped with respectively outside intercommunication with cavity (10) inside input through hole (12) and output through hole (13);

the PIN separation device comprises a separation rib, a resonance piece (14), a flying rod wire and two PIN needles (15), wherein the separation rib, the resonance piece (14) and the flying rod wire are respectively arranged in the cavity (10), and the two PIN needles (15) respectively penetrate through the input through hole (12) and the output through hole (13) to be respectively connected with the resonance piece (14);

and the cover plate (20) is connected with the cavity (10) to cover the opening of the cavity.

2. The sheet metal filter of claim 1, wherein: the rib comprises a first rib (31) and a second rib (32), the first rib (31) is parallel to the front side part (11), the second rib (32) is respectively and vertically connected with the front side part (11) and the first rib (31), the second rib (32) is located between the input through hole (12) and the output through hole (13), the inner part of the cavity (10) is divided into rib areas and other areas, the rib areas are areas between the first rib (31) and the front side part (11), and the resonance pieces (14) are respectively distributed in the rib areas and the other areas.

3. The sheet metal filter of claim 2, wherein: the second rib (32) is vertically connected with the middle part of the first rib (31), the rib separating area comprises a first area (100) and a second area (200), and the second rib (32) is located between the first area (100) and the second area (200).

4. A sheet metal filter as claimed in claim 3, wherein: the resonant piece (14) comprises a horizontal part, a first bending part connected with one end of the horizontal part and a second bending part connected with the other end of the horizontal part, wherein the first bending part extends to the first area (100), the second bending part extends to the second area (200), and the horizontal part is positioned in the other areas.

5. The sheet metal filter of claim 4, wherein: the partition ribs comprise third partition ribs (33), the cross sections of the third partition ribs (33) are V-shaped, and the third partition ribs (33) are located in other areas.

6. The sheet metal filter of claim 5, wherein: the flying lever wires comprise a first flying lever wire (161), a second flying lever wire (162) and a third flying lever wire (163), the first flying lever wire (161) is arranged in the first area (100) and is coupled with the first bending part, the second flying lever wire (162) and the third flying lever wire (163) are respectively arranged in other areas, the second flying lever wire (162) is respectively coupled with the second bending part and the third separating rib (33), and the third flying lever wire (163) is coupled with the horizontal part.

7. The sheet metal filter of claim 1, wherein: the PIN needle device further comprises a PIN needle medium (151) used for supporting the PIN needles (15), wherein the PIN needle medium (151) is respectively arranged in the input through hole (12) and the output through hole (13), and the two PIN needles (15) are respectively inserted into the corresponding PIN needle medium (151).