CN113725582A - Resonant piece fixing structure and sheet metal filter using same - Google Patents
Resonant piece fixing structure and sheet metal filter using same Download PDFInfo
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- CN113725582A CN113725582A CN202110926415.1A CN202110926415A CN113725582A CN 113725582 A CN113725582 A CN 113725582A CN 202110926415 A CN202110926415 A CN 202110926415A CN 113725582 A CN113725582 A CN 113725582A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P7/00—Resonators of the waveguide type
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/20—Frequency-selective devices, e.g. filters
- H01P1/207—Hollow waveguide filters
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Abstract
本发明提供一种谐振片固定结构及使用该固定结构的钣金滤波器，其中，谐振片固定结构包括谐振片本体，该谐振片本体上具有至少一处焊接部，且该焊接部与滤波器的腔体侧壁之间为焊接连接，本发明在钣金滤波器的腔体侧壁上直接焊接或设置支撑部后再焊接谐振片本体，支撑部一方面起到支撑谐振片本体的作用，另一方面对谐振片本体进行定位，简化了结构，可减轻材料重量，并降低了安装难度；而且，谐振片本体采用一体式谐振片，该一体化谐振片的其中一端向靠近另一端的方向弯折设置，提升了内腔体积，简化了结构，有利于进一步降低谐振片的安装难度。
The present invention provides a resonator plate fixing structure and a sheet metal filter using the same, wherein the resonator plate fixing structure includes a resonator plate body, and the resonator plate body has at least one welding part, and the welding part is connected to the filter. The side walls of the cavity are connected by welding. The present invention directly welds the cavity side walls of the sheet metal filter or installs a support portion and then welds the resonant sheet body. On the one hand, the support portion plays the role of supporting the resonance sheet body. On the other hand, the positioning of the resonant plate body simplifies the structure, reduces the weight of the material, and reduces the difficulty of installation; moreover, the resonator plate body adopts an integrated resonator plate, and one end of the integrated resonator plate is in a direction close to the other end. The bent arrangement increases the volume of the inner cavity, simplifies the structure, and is beneficial to further reduce the installation difficulty of the resonance sheet.
Description
Technical Field
The invention belongs to the technical field of sheet metal filters, and particularly relates to a resonant chip fixing structure and a sheet metal filter using the same.
Background
The filter is a typical frequency selection device, which can effectively suppress the useless signals, so that the useless signals cannot pass through the filter, and only the useful signals smoothly pass through the filter, therefore, the quality of the performance of the filter directly affects the quality of the whole communication system, and the filter is a vital device in modern microwave and millimeter wave communication systems. The cavity filter is an important filter, and compared with filters with other properties, the cavity filter has the advantages of firm structure, stable and reliable performance, small volume, moderate Q value, far high-end parasitic passband and good heat dissipation performance, and can be used for higher power and frequency.
With the gradual development of communication technology, the size of devices is gradually reduced, in order to achieve the purpose of miniaturization, a sheet metal filter is mostly adopted in the prior art, a cavity is made in a die casting mode or a machining mode, the width of a radial strip is made to be narrow, weight reduction processing is carried out, a resonance rod is made of sheet metal materials into a resonance piece, the height of the resonance piece is reduced by more than 1/2 of a conventional filter, the goal of miniaturization is achieved, but electrical performance indexes are not lost, the size requirement is determined through simulation, the debugging difficulty can be further reduced, the assembly time of the filter is shortened through a welding process, and the efficiency is improved.
However, the fixing structure of the resonant piece of the existing sheet metal filter has the following defects:
as shown in fig. 1, a single-metal-plate single-pass filter has a resonator plate body 1 welded to a step at the bottom of a cavity 2, and the frequency and Q value of the filter are affected by the reference displacement of the resonator plate body relative to the cavity, no matter the reference displacement is up, down, left and right. Due to the suspended structure, datum hole positioning is needed in structural design, and a relatively complex positioning welding tool such as a welding table 8 needs to be designed during welding so as to guarantee assembly precision.
As shown in fig. 2, the two-way sheet metal filter has the resonant piece bodies in the left and right cavities shared, and the spacer ribs in the middle of the cavities are provided with positioning assembly tables 7 (clamping grooves), so that the left and right positions and the up and down positions of the resonant piece bodies can be accurately positioned without specific tooling positioning, but the two-way sheet metal filter has a complex structure, is difficult to install and has high requirements on assembly personnel.
Disclosure of Invention
In view of the above, the present invention provides a resonator plate fixing structure with simple structure and low installation difficulty, and a sheet metal filter using the same.
In order to achieve the purpose, the invention adopts the technical scheme that: the resonant chip fixing structure comprises a resonant chip body, wherein the resonant chip body is provided with at least one welding part, and the welding part is in welded connection with the side wall of the cavity of the filter.
Further, the welding part is directly connected with the side wall of the cavity.
Furthermore, the side wall of the cavity is provided with a supporting part for supporting the welding part and positioning the welding part, and the welding part is connected with the supporting part in a welding manner.
Furthermore, the supporting part is an opening which is arranged on the side wall of the cavity and is matched with the welding part, and the resonance sheet body can be clamped at the opening through the welding part.
Further, the support portion is a protruding structure disposed on the sidewall of the cavity, the protruding structure is an annular structure having an opening at one end, and an inner edge of the annular structure is used for supporting the welding portion of the resonator plate body and positioning the welding portion.
Further, the height of the inner edge of the annular structure is matched with the size of the welding part.
Furthermore, the supporting portion is a convex structure arranged on the side wall of the cavity, the convex structure is a plurality of convex points arranged along the horizontal direction, and the plurality of convex points are used for supporting the welding portion of the resonator plate body.
Further, the welding part is arranged along the length direction of the resonator plate body.
Furthermore, the resonance sheet body is an integrated resonance sheet, and one end of the integrated resonance sheet is bent towards the direction close to the other end.
The sheet metal filter comprises a cavity and a resonance sheet body arranged in the cavity, wherein the cavity and the resonance sheet body are in connection, and the resonance sheet fixing structure is adopted.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the resonant chip body is directly welded or welded after the supporting part is arranged on the side wall of the cavity of the sheet metal filter, and the supporting part plays a role of supporting the resonant chip body on one hand and positions the resonant chip body on the other hand, so that the structure is simplified, the weight of materials can be reduced, and the installation difficulty is reduced;
2. the resonance piece body adopts an integrated resonance piece, one end of the integrated resonance piece is bent towards the direction close to the other end, the volume of the inner cavity is increased, the structure is simplified, and the installation difficulty of the resonance piece is further reduced.
Drawings
FIG. 1 is an exploded view of a conventional one-way sheet metal one-way filter;
FIG. 2 is an exploded view of a conventional two-way sheet metal filter;
fig. 3 is a schematic structural view of a resonator plate fixing structure in embodiment 1;
fig. 4 is an exploded schematic view of the sheet metal filter in embodiment 1;
fig. 5 is a schematic structural view of a resonator plate fixing structure in embodiment 2;
fig. 6 is an exploded schematic view of a sheet metal filter in embodiment 2;
fig. 7 is a schematic structural view of a resonator plate fixing structure in embodiment 3;
fig. 8 is an exploded schematic view of a sheet metal filter in embodiment 3;
fig. 9 is a schematic structural view of a resonator plate fixing structure in embodiment 4;
fig. 10 is an exploded schematic view of a sheet metal filter in embodiment 4;
the labels in the figure are: 1. the resonator comprises a resonator body, 2, a cavity, 3, an opening, 4, an annular structure with an opening at one end, 5, salient points, 6, a cover plate, 7, a positioning assembly table, 8 and a welding table.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the protection scope of the present invention.
Example 1
As shown in fig. 3, the resonator plate fixing structure includes a resonator plate body 1, the resonator plate body 1 has at least one welding portion, and the welding portion is welded to the sidewall of the cavity 2 of the filter, in this embodiment, the welding portion is directly connected to the sidewall of the cavity 2. Particularly, when welding, the resonance sheet body 1 is contacted with the side wall of the cavity 2, the tool is adopted for fixing, then the contact part is welded and fixed, the structure is simple, and the assembly is convenient.
As shown in fig. 4, the sheet metal filter includes a cavity 2, a cover plate 6 matched with the cavity, and a resonator plate body 1 disposed inside the cavity, and when the cavity 2 and the resonator plate body 1 are connected, the resonator plate fixing structure is adopted.
Example 2
As shown in fig. 5, the resonator plate fixing structure includes a resonator plate body 1, the resonator plate body 1 has at least one welding portion, the welding portion is welded to a sidewall of a cavity 2 of the filter, a supporting portion for supporting the welding portion and positioning the welding portion is disposed on the sidewall of the cavity 2, and the welding portion is welded to the supporting portion, in this embodiment, the supporting portion is an opening 3 disposed on the sidewall of the cavity and matching with the welding portion, further, the opening 3 may be in a straight shape, and the resonator plate body 1 may be clamped to the opening 3 by the welding portion. Specifically, during welding, the welding part of the resonance sheet body 1 is clamped at the opening 3, and then the connection part of the resonance sheet body and the opening is welded, so that the resonance sheet body can be completely fixed.
As shown in fig. 6, the sheet metal filter includes a cavity 2, a cover plate 6 matched with the cavity, and a resonator plate body 1 disposed inside the cavity, and when the cavity 2 and the resonator plate body 1 are connected, the resonator plate fixing structure is adopted.
Example 3
As shown in fig. 7, the resonator plate fixing structure includes a resonator plate body 1, the resonator plate body 1 has at least one welding portion, the welding portion is welded to a sidewall of a cavity 2 of the filter, a supporting portion for supporting the welding portion and positioning the welding portion is provided on the sidewall of the cavity 2, and the welding portion is welded to the supporting portion. For optimal welding, the height of the inner edge of the ring-shaped structure is matched to the size of the welded part. During assembly, the ring-shaped structure 4 with an opening at one end clamps the welding part to fix the resonance sheet body 1, and then the resonance sheet body 1 is welded in the cavity.
As shown in fig. 8, a sheet metal filter includes a cavity 2, a cover plate 6 matched with the cavity, and a resonator plate body 1 disposed inside the cavity, and when the cavity 2 and the resonator plate body 1 are connected, the resonator plate fixing structure is adopted.
Example 4
As shown in fig. 9, the resonator plate fixing structure includes a resonator plate body 1, the resonator plate body 1 has at least one welding portion, the welding portion is connected to a sidewall of a cavity 2 of the filter in a welding manner, a supporting portion for supporting the welding portion and positioning the welding portion is disposed on the sidewall of the cavity 2, and the welding portion is connected to the supporting portion in a welding manner. The salient points are contacted with the resonance sheet body 1 to form welding points for fixing the resonance sheet body, the resonance sheet body is fixed in the cavity 2 by adopting a proper tool, and then the resonance sheet is welded at the salient points. The method has simple structure, and can completely fix the resonant chip by punching convex points on a sheet metal material, assembling the resonant chip body by using a tool and finally completing welding.
As shown in fig. 10, a sheet metal filter includes a cavity 2, a cover plate 6 matched with the cavity, and a resonator plate body 1 disposed inside the cavity, and when the cavity 2 and the resonator plate body 1 are connected, the resonator plate fixing structure is adopted.
Example 5
The present embodiment is different from embodiments 1 to 4 in that the present embodiment further provides a soldering portion along the length direction of the resonator plate body 1, thereby enabling a larger soldering surface without affecting signal input and output, and facilitating assembly.
Example 6
The difference between this embodiment and embodiment 5 is that, in this embodiment, the resonator plate body 1 is further configured as an integrated resonator plate, one end of the integrated resonator plate is bent toward the other end, in this embodiment, the integrated resonator plate is preferably bent 180 °, two ends of the integrated resonator plate are respectively provided with the input port and the output port, the input port and the output port both penetrate through the cavity and are both disposed on the same end surface of the cavity. Therefore, the input and output work of the transmission signals on the same plane can be realized, and the signal transmission structure is simpler. When the bending angle of one end of the integrated resonance sheet 4 is 180 degrees, the input port and the output port are distributed up and down.
According to the invention, the resonant chip body is directly welded or welded after the supporting part is arranged on the side wall of the cavity of the sheet metal filter, and the supporting part plays a role of supporting the resonant chip body on one hand and positions the resonant chip body on the other hand, so that the structure is simplified, the weight of materials can be reduced, and the installation difficulty is reduced; and the resonance piece body adopts an integrated resonance piece, and one end of the integrated resonance piece is bent towards the direction close to the other end, so that the volume of the inner cavity is increased, the structure is simplified, and the mounting difficulty of the resonance piece is further reduced.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110926415.1A CN113725582A (en) | 2021-08-12 | 2021-08-12 | Resonant piece fixing structure and sheet metal filter using same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110926415.1A CN113725582A (en) | 2021-08-12 | 2021-08-12 | Resonant piece fixing structure and sheet metal filter using same |
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| CN113725582A true CN113725582A (en) | 2021-11-30 |
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| CN202110926415.1A Pending CN113725582A (en) | 2021-08-12 | 2021-08-12 | Resonant piece fixing structure and sheet metal filter using same |
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Citations (8)
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| KR101292482B1 (en) * | 2012-03-08 | 2013-07-31 | 주식회사 팬택 | Mobile terminal for including antenna |
| CN110224209A (en) * | 2019-03-28 | 2019-09-10 | 广东通宇通讯股份有限公司 | A kind of two-way fabrication formula filter |
| CN111786069A (en) * | 2019-04-04 | 2020-10-16 | 上海诺基亚贝尔股份有限公司 | Resonator and filter |
| CN212303856U (en) * | 2019-04-26 | 2021-01-05 | 微数据电子创新斯德哥尔摩股份公司 | Metal sheet radio frequency cavity filter |
| CN112952323A (en) * | 2021-04-01 | 2021-06-11 | 昆山立讯射频科技有限公司 | Monomer resonance rod, resonance rod and radio frequency cavity filter |
| CN113113743A (en) * | 2021-04-14 | 2021-07-13 | 昆山立讯射频科技有限公司 | Single-cavity resonator and radio frequency cavity filter |
| CN113224486A (en) * | 2021-06-01 | 2021-08-06 | 苏州波发特电子科技有限公司 | Air strip line filter |
| CN216450792U (en) * | 2021-08-12 | 2022-05-06 | 广东通宇通讯股份有限公司 | Resonant piece fixing structure and sheet metal filter using same |
-
2021
- 2021-08-12 CN CN202110926415.1A patent/CN113725582A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101292482B1 (en) * | 2012-03-08 | 2013-07-31 | 주식회사 팬택 | Mobile terminal for including antenna |
| CN110224209A (en) * | 2019-03-28 | 2019-09-10 | 广东通宇通讯股份有限公司 | A kind of two-way fabrication formula filter |
| CN111786069A (en) * | 2019-04-04 | 2020-10-16 | 上海诺基亚贝尔股份有限公司 | Resonator and filter |
| CN212303856U (en) * | 2019-04-26 | 2021-01-05 | 微数据电子创新斯德哥尔摩股份公司 | Metal sheet radio frequency cavity filter |
| CN112952323A (en) * | 2021-04-01 | 2021-06-11 | 昆山立讯射频科技有限公司 | Monomer resonance rod, resonance rod and radio frequency cavity filter |
| CN113113743A (en) * | 2021-04-14 | 2021-07-13 | 昆山立讯射频科技有限公司 | Single-cavity resonator and radio frequency cavity filter |
| CN113224486A (en) * | 2021-06-01 | 2021-08-06 | 苏州波发特电子科技有限公司 | Air strip line filter |
| CN216450792U (en) * | 2021-08-12 | 2022-05-06 | 广东通宇通讯股份有限公司 | Resonant piece fixing structure and sheet metal filter using same |
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