CN101950830B - Cavity filter and manufacture method thereof - Google Patents
Cavity filter and manufacture method thereof Download PDFInfo
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- CN101950830B CN101950830B CN201010282604.1A CN201010282604A CN101950830B CN 101950830 B CN101950830 B CN 101950830B CN 201010282604 A CN201010282604 A CN 201010282604A CN 101950830 B CN101950830 B CN 101950830B
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- resonant rod
- concave station
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- ring flange
- cavity
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Abstract
The invention discloses a cavity filter and a manufacture method thereof, and in particular relates to a cavity filter of which a cover plate is connected with a resonance rod. The cavity filter provided by the embodiment of the invention comprises the resonance rod and the cover plate, wherein the resonance rod and the cover plate are connected together in a riveted way, one face of the cover plate is provided with a concave table, and the resonance rod is riveted in the concave table. The resonance rod and the cover plate of the cavity filter provided by the embodiment of the invention can also be connected together in an interference fit mode. Compared with a mode that the resonance rod is arranged in a cavity in the prior art, the invention has the structure that the resonance rod and the cover plate are connected, therefore, the working procedure of locking screws manually is omitted, the cost on the filter is reduced, and a radio frequency index is easy to guarantee.
Description
Technical field
The present invention relates to cavity body filter, be specifically related to cavity body filter that cover plate is connected with resonant rod and manufacture method thereof.
Background technology
Cavity body filter is widely used in the communications field as a kind of frequency selection device, especially field of radio frequency communication.In a base station, filter for selecting signal of communication, the clutter outside filtering communication signal frequency or interference signal.
Cavity body filter generally comprises three classes, and the first kind is coaxial cavity filter, and Equations of The Second Kind is dielectric filter, and the 3rd class is waveguide filter.For coaxial cavity filter, generally comprise: cavity, cover plate and the metal resonant rod be housed in cavity.
In prior art, a kind of generalized section of cavity body filter as shown in Figure 1, usually utilizes the mode of turnery processing to make resonant rod 101, and then be fixed on cavity bottom surface 102 with screw 103 by resonant rod 101, finally refills and join cover plate 104.
To in the research and practice process of prior art, the present inventor finds, in prior art, resonant rod is assemblied on cavity, needs artificial screw to be locked on cavity by resonant rod, complex procedures, cost is relatively high, and the likely loose contact of resonant rod and cavity.
Summary of the invention
The manufacture method of the filter that the embodiment of the present invention provides and filter thereof, can reduce the production cost of filter.
A kind of cavity body filter that the embodiment of the present invention provides, comprise cover plate, resonant rod, the one side of described cover plate is provided with concave station, described resonant rod is riveted in described concave station, described resonant rod also comprises ring flange, the size of described concave station and the card size of resonant rod ring flange match, the degree of depth of described concave station is greater than the thickness of resonant rod ring flange, described ring flange is riveted in described concave station, the platform of described concave station is along portion deforms extruding resonant rod ring flange card, thus fixing resonant rod, the material of described resonant rod is metal, the main body of described resonant rod is tubular, its one end is closed, the edge of the other end is fixed with ring flange.
The manufacture method of a kind of cavity body filter that the embodiment of the present invention provides, is characterized in that, comprising:
Processing metal stretching resonant rod, described resonant rod is formed by metal sheet punching press, and the main body of described resonant rod is tubular, and its one end is closed, and the edge of the other end is fixed with ring flange; The cover plate of filter processes concave station, and the size of the concave station processed and the card size of resonant rod ring flange match, and the degree of depth of described concave station is greater than the thickness of resonant rod ring flange;
The ring flange of resonant rod is riveted in described concave station, the platform of concave station is fixed resonant rod ring flange card, with fixing resonant rod along crimp;
The cover plate be connected with resonant rod and filter cavity are assembled.
In the embodiment of the present invention, resonant rod is connected with cover plate, is arranged on the mode in cavity relative to resonant rod of the prior art, eliminates the operation of artificial lock screw, reduces the cost of filter, and be convenient to ensure radio-frequency (RF) index.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of cavity body filter cross-sectional view in prior art;
Fig. 2 (a) is the cross-sectional view of a kind of cavity body filter of embodiments of the invention one;
Fig. 2 (b) is the cross-sectional view of the another kind of cavity body filter of embodiments of the invention one;
Fig. 3 (a) is the generalized section before cover plate in the embodiment of the present invention one and resonant rod are riveted;
Fig. 3 (b) be after cover plate in the embodiment of the present invention one and resonant rod are riveted generalized section;
Fig. 4 (a) is the schematic top plan view of the cover plate being provided with concave station;
Fig. 4 (b) is the another kind of schematic top plan view of the cover plate being provided with concave station;
Fig. 5 is the flow chart of cavity body filter manufacture method in the embodiment of the present invention four.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment one, a kind of cavity body filter, as shown in generalized section 2 (a), comprise cover plate 201, resonant rod 202, the one side of cover plate 201 is provided with concave station 203, and resonant rod 202 is riveted in concave station 203.
Resonant rod in the present embodiment can be the stretching resonant rod be stamped to form with metal sheet, and this kind of resonant rod can reduce the material cost of resonant rod, and is easy to the assembling in later stage.Certain resonant rod of the present invention also can be to be processed by the mode that machine adds with bar or other processing modes process.The shape of the resonant rod in the present embodiment can also be the shapes such as cuboid, hexahedron, is not all construed as limiting the invention.Described resonant rod with the resonant rod of ring flange 204, can be beneficial to later stage riveted joint, and the shape of ring flange can be square, and other shapes such as pentagon also can be the resonant rods without ring flange, all in protection scope of the present invention.
Cover plate 201 is provided with a concave station 203, described concave station can mill out with milling cutter, and the vertical view of concave station and cover plate is as shown in Fig. 4 (a); Described concave station can also be punching press out, the structure as shown in profile 2 (b), vertical view is as shown in Fig. 4 (b).Concave station can have multiple processing mode, is not construed as limiting the invention.
The ring flange 204 of resonant rod is riveted in concave station 203, wherein the size of concave station 203 and the card size of resonant rod ring flange 204 match, the degree of depth of concave station 203 is greater than the thickness of resonant rod ring flange 204, generally, the difference of the concavo-convex degree of depth and resonant rod ring flange 204 thickness is more than or equal to 0.2mm and is advisable, to enable resonant rod more firmly rivet on the cover board, concrete parameter will be arranged according to the thickness of cover plate and resonant rod ring flange; The number of concave station can have multiple, is not all construed as limiting the invention.
The step of concrete riveted joint is as shown in Fig. 3 (a) He Fig. 3 (b), cover plate when Fig. 3 (a) is not for riveting and the cross-sectional view of resonant rod, Fig. 3 (b) is cover plate after riveted joint and the cross-sectional view of resonant rod, make the platform of concave station 203 along 205 distortion by applying pressure 206, to extrude resonant rod ring flange 204 card, thus resonant rod 202 is fixed on cover plate 201.Wherein crimp concave station platform along 205 time can crimp with riveting die, can certainly crimp by other modes.
Above-mentioned riveting method, relative to the mode using screw lock resonant rod in prior art, eliminates the operation of artificial lock screw, reduces cost, and be convenient to ensure radio-frequency (RF) index; Resonant rod is installed and is on the cover board arranged on baroque cavity relative to resonant rod, more easily realize.Cover plate in embodiment one can also be provided with multiple projection, by the cover board arranging projection, the intensity of cover plate can be strengthened, playing the effect of reinforcement, the anti-deformation of cover plate is improved, avoid the impact of cover plate distortion on cavity body filter index.
Embodiment two, a kind of cavity body filter, comprise cover plate, resonant rod, and the one side of described cover plate is provided with lug boss, and described resonant rod bottom surface is provided with depressed part, and resonant rod is fixed on the cover board by the mode of interference fit by described depressed part and described lug boss.
Resonant rod in embodiment two can also be the resonant rod being with wired tooth, concrete, described resonant rod is provided with receiving space, described receiving space is for accommodating the projection on described cover plate, and many line teeth are provided with on the madial wall of resonant rod forming described receiving space, make to form interference fit between described resonant rod and described projection, and then resonant rod is fixed on described cover plate.
Described resonant rod does not need to be coordinated with described cavity by extra screw, and direct and cover plate interference fit, not only saves production cost, also save the operation of installing described screw simultaneously.Further, after described resonant rod is combined with described cavity, the solder joint occurred when can't occur welding or burr, do not affect the He Ne laser performance of described cavity body filter.
The shape of the resonant rod in the present embodiment can also be cuboid, hexahedron etc.; The shape of ring flange also can be square, and other shapes such as pentagon, are not all construed as limiting the invention.
Embodiment three, a kind of cavity body filter, comprise cover plate, resonant rod, and the one side of described cover plate is provided with depressed part, and described resonant rod bottom surface is provided with lug boss, and resonant rod is fixed on the cover board by the mode of interference fit by described depressed part and described lug boss.
Resonant rod in embodiment three can also be the resonant rod being with wired tooth, concrete, described cover plate is provided with receiving space, described receiving space is for accommodating the lug boss on described resonant rod bottom surface, and many line teeth are provided with on the lateral wall of resonant rod forming described receiving space, make to form interference fit between described resonant rod lug boss and described cover plate depressed part, and then resonant rod is fixed on described cover plate.
Described resonant rod does not need to be coordinated with described cavity by extra screw, and direct and cover plate interference fit, not only saves production cost, also save the operation of installing described screw simultaneously.Further, after described resonant rod is combined with described cavity, the solder joint occurred when can't occur welding or burr, do not affect the He Ne laser performance of described cavity body filter.
The manufacture method of embodiment four, a kind of cavity body filter, as shown in Figure 5, comprising:
A1, on the cover plate of filter, process concave station;
The processing mode of concave station can be mill out with milling cutter, the structural representation of the cover plate that milling cutter mills out as shown in Fig. 4 (a), can also be with the mode punching press of die casting out, the structural representation of the cover plate that die casting goes out is as shown in Fig. 4 (b).Concave station can have multiple processing mode, is not construed as limiting the invention.
The size of the concave station processed and the card size of resonant rod ring flange match, the degree of depth of described concave station is greater than the thickness of resonant rod ring flange, the difference of thickness is more than or equal to 0.2mm, more firmly rivet on the cover board to enable resonant rod, the optimum configurations of concave station and the difference of the thickness of ring flange is that concrete parameter will be arranged according to the thickness of cover plate and resonant rod ring flange in order to allow resonant rod more firmly fix on the cover board; The number of concave station can have multiple, is not all construed as limiting the invention.
A2, resonant rod is riveted in described concave station;
Resonant rod in the present embodiment can be the stretching resonant rod be stamped to form with metal sheet, and the main body of this kind of resonant rod is tubular, and its one end is closed, and the edge of the other end is fixed with ring flange, can reduce the material cost of resonant rod, and is easy to the assembling in later stage.Certain resonant rod of the present invention also can be to be processed by the mode that machine adds with bar or other processing modes process.The shape of the resonant rod in the present embodiment can also be the shapes such as cuboid, hexahedron, is not all construed as limiting the invention.This resonant rod can be the resonant rod with ring flange, relative to not having the resonant rod of ring flange to be more conducive to riveted joint, also can be the resonant rod without ring flange, all in protection scope of the present invention.
The step of concrete riveted joint is as shown in Fig. 3 (a) He Fig. 3 (b), cover plate when Fig. 3 (a) is not for riveting and the cross-sectional view of resonant rod, Fig. 3 (b) is cover plate after riveted joint and the cross-sectional view of resonant rod, make the platform of concave station 203 along 205 distortion by applying pressure 206, to extrude resonant rod ring flange 204 card, thus resonant rod 202 is fixed on cover plate 201.Wherein crimp concave station platform along time can crimp with riveting die, can certainly crimp by other modes.
Above-mentioned riveting method, relative to the mode using screw lock resonant rod in prior art, eliminates the operation of artificial lock screw, reduces cost, and be convenient to ensure radio-frequency (RF) index; Resonant rod is installed and is on the cover board arranged on baroque cavity relative to resonant rod, more easily realize.
A3, the cover plate be connected with resonant rod and filter cavity to be assembled.
The method that cover plate and cavity carry out assembling can be had multiple, such as, by the mode of screw lock, cover plate is fixed on cavity, or with welding mode by cover plate together with cavity welding, be appreciated that the assembling mode of concrete cover plate and resonant rod is not construed as limiting the invention.
The cavity body filter provided the embodiment of the present invention above and cavity body filter manufacture method are described in detail, apply specific case herein to set forth principle of the present invention and execution mode, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping; Meanwhile, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (3)
1. a cavity body filter, comprise cover plate, resonant rod, it is characterized in that, the one side of described cover plate is provided with concave station, described resonant rod is riveted in described concave station, described resonant rod also comprises ring flange, the size of described concave station and the card size of resonant rod ring flange match, the degree of depth of described concave station is greater than the thickness of resonant rod ring flange, described ring flange is riveted in described concave station, the platform of described concave station is along portion deforms extruding resonant rod ring flange card, thus fixing resonant rod, the material of described resonant rod is metal, the main body of described resonant rod is tubular, its one end is closed, the edge of the other end is fixed with ring flange.
2. a manufacture method for cavity body filter, is characterized in that, comprising:
Processing metal stretching resonant rod, described resonant rod is formed by metal sheet punching press, described resonant rod
Main body be tubular, its one end is closed, and the edge of the other end is fixed with ring flange;
The cover plate of filter processes concave station, and the size of the concave station processed and the card size of resonant rod ring flange match, and the degree of depth of described concave station is greater than the thickness of resonant rod ring flange;
The ring flange of resonant rod is riveted in described concave station, the platform of concave station is fixed resonant rod ring flange card, with fixing resonant rod along crimp;
The cover plate be connected with resonant rod and filter cavity are assembled.
3. cavity body filter manufacture method as claimed in claim 2, is characterized in that, the processing mode of concave station to mill out with milling cutter or the mode of punching press is processed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010282604.1A CN101950830B (en) | 2010-09-16 | 2010-09-16 | Cavity filter and manufacture method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010282604.1A CN101950830B (en) | 2010-09-16 | 2010-09-16 | Cavity filter and manufacture method thereof |
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| Publication Number | Publication Date |
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| CN101950830A CN101950830A (en) | 2011-01-19 |
| CN101950830B true CN101950830B (en) | 2014-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201010282604.1A Active CN101950830B (en) | 2010-09-16 | 2010-09-16 | Cavity filter and manufacture method thereof |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102709628A (en) * | 2012-02-03 | 2012-10-03 | 苏州天擎电子通讯有限公司 | Cavity filter |
| CN102709629A (en) * | 2012-02-08 | 2012-10-03 | 武汉凡谷电子技术股份有限公司 | Mid frequency range high-power cavity filter |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010021599A (en) * | 2008-07-08 | 2010-01-28 | New Japan Radio Co Ltd | Transmission device with built-in noise suppression filter |
| CN101656341A (en) * | 2009-10-10 | 2010-02-24 | 大富（深圳）科技有限公司 | Resonance tube |
| CN101764277A (en) * | 2010-03-12 | 2010-06-30 | 深圳市大富科技股份有限公司 | Filter of cavity and resonance tube thereof |
| CN201766150U (en) * | 2010-09-16 | 2011-03-16 | 深圳市大富科技股份有限公司 | Cavity filter |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8031036B2 (en) * | 2008-10-15 | 2011-10-04 | Com Dev International Ltd. | Dielectric resonator and filter with low permittivity material |
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- 2010-09-16 CN CN201010282604.1A patent/CN101950830B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010021599A (en) * | 2008-07-08 | 2010-01-28 | New Japan Radio Co Ltd | Transmission device with built-in noise suppression filter |
| CN101656341A (en) * | 2009-10-10 | 2010-02-24 | 大富（深圳）科技有限公司 | Resonance tube |
| CN101764277A (en) * | 2010-03-12 | 2010-06-30 | 深圳市大富科技股份有限公司 | Filter of cavity and resonance tube thereof |
| CN201766150U (en) * | 2010-09-16 | 2011-03-16 | 深圳市大富科技股份有限公司 | Cavity filter |
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| CN101950830A (en) | 2011-01-19 |
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Address after: 518104, Guangdong, Shenzhen province Baoan District manhole Street oyster road manhole Industrial Company Third Industrial Zone A1, A2, A3 101 and 2 layers, A4 Applicant after: Shenzhen Tat Fook Technology Co., Ltd. Address before: 518108 Bao'an District, Shenzhen City, Guangdong Province, Shiyan Town, love group with the rich industrial area A \ B Dong Applicant before: Shenzhen Tat Fook Technology Co., Ltd. |
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Address after: 233000 building 4, national financial incubation Industrial Park, 17 Yannan Road, high tech Zone, Bengbu City, Anhui Province Patentee after: Dafu Technology (Anhui) Co., Ltd Address before: 518104, Guangdong, Shenzhen province Baoan District manhole Street oyster road manhole Industrial Company Third Industrial Zone A1, A2, A3 101 and 2 layers, A4 Patentee before: SHENZHEN TATFOOK TECHNOLOGY Co.,Ltd. |
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