CN101807737A - Cavity filter, filter cavity and resonating tube assembling method - Google Patents
Cavity filter, filter cavity and resonating tube assembling method Download PDFInfo
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- CN101807737A CN101807737A CN201010148099A CN201010148099A CN101807737A CN 101807737 A CN101807737 A CN 101807737A CN 201010148099 A CN201010148099 A CN 201010148099A CN 201010148099 A CN201010148099 A CN 201010148099A CN 101807737 A CN101807737 A CN 101807737A
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Abstract
The invention discloses a cavity filter, a filter cavity and a resonating tube assembling method. In the embodiment of the invention, a resonating tube of which the bottom is provided with a through hole is arranged on a boss on the bottom surface of the cavity in a close clearance fit mode; the top of the boss passes through the through hole at the bottom of the resonating tube; a recess is reserved on the top of the boss; the top of the boss is expanded outwards from the recess by using a pressure head; and the top of the expanded boss compresses the resonating tube to fix the resonating tube. Compared with a conventional mode of locking the resonating tube by using a screw, the invention has the advantages of saving material cost, expanding the top of the boss through the pressure head which is vertical to the bottom surface of the resonating tube without performing a complex assembling action, possibly, accurately and reliably assembling the resonating tube, realizing automatic assembly in a simpler and easier mode, improving assembly efficiency and lowering assembly cost.
Description
Technical field
The present invention relates to the cavity body filter technical field, be specifically related to cavity body filter and filter cavity and resonating tube assembling method.
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 the base station, filter is used to select signal of communication, clutter or interference signal that the filtering communication signal frequency is outer.
Cavity body filter generally comprises three classes, and the first kind is a coaxial cavity filter, and second class is a dielectric filter, and the 3rd class is a waveguide filter.For coaxial cavity filter, comprising: cavity, cover plate and be housed in resonatron in the cavity, in the prior art, resonatron is fixed on the inside cavity bottom surface, and need with reliable, good being connected of the inner bottom surface of cavity.Be specifically described below:
Existing a kind of cavity body filter, structural representation comprises as shown in Figure 1: cavity 110, cover plate 120 and accommodate with cavity in resonatron 130, form airtight electromagnetic space between cover plate 120 and the cavity 110.Cavity 110 bottom surfaces are provided with boss 111, by screw 140 resonatron are fixed on the boss 111.
In research and practice process to prior art, the present inventor finds, resonatron fixed form of the prior art needs more screw, and cost is higher, assembling is complicated simultaneously, for example finish the installation of a resonatron, need the folder screw, the position butt joint, screw screw and just can finish to processes such as lockings, the automated production difficulty is bigger.
Summary of the invention
The invention provides cavity body filter and filter cavity and resonating tube assembling method, can reduce material cost, improve efficiency of assembling.
The embodiment of the invention provides a kind of cavity body filter, comprises cavity and resonatron;
Described resonatron bottom surface is provided with through hole, described inside cavity has boss on the bottom surface, and depressed part is arranged at described boss top, boss passes the through hole of resonatron, described boss is subjected to from the outside expansionary force of described depressed part, make boss top distortion and swell to compressing described resonatron, described resonatron is fixed.
A kind of filter cavity that the embodiment of the invention provides, described cavity is provided with the boss that is used to install resonatron, and the top of described boss is provided with depressed part.
Accordingly, the present invention also provides a kind of resonating tube assembling method, comprising:
With little gap fiting mode the resonatron that the bottom has through hole is assembled on the boss of cavity bottom surface; Described boss passes the bottom through-hole of described resonatron; Depressed part is arranged at described boss top;
With pressure head described boss top is outwards swollen from described depressed part, the boss top that swells compresses resonatron, and described resonatron is fixed.
In the embodiment of the invention, by the resonatron that the bottom has through hole being assembled on the boss of cavity bottom surface with little gap fiting mode; The bottom through-hole of described resonatron is passed at described boss top, and depressed part is arranged at described boss top; Outwards swell from described depressed part with the top of pressure head with described boss, the boss top that swells compresses resonatron, and described resonatron is fixed.Mode with respect to existing screw locking resonatron, saved material cost, need not complicated assembling action simultaneously, directly make the boss top swell by pressure head perpendicular to the resonatron bottom surface, promptly may accurately and reliably resonatron be assembled, simple more and be easy to realize assembly automation, improved efficiency of assembling, reduced assembly cost.
Description of drawings
In order to be illustrated more clearly in the technical scheme in the embodiment of the invention, the accompanying drawing of required use is done to introduce simply in will describing embodiment below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the schematic diagram of resonatron assembling in the prior art;
Fig. 2 is the cross-sectional view of the embodiment of the invention one cavity body filter;
Fig. 3 is the cross-sectional view of the embodiment of the invention two filter cavities;
Fig. 4 is the flow chart of the embodiment of the invention three resonating tube assembling methods;
Fig. 5 is the structural representation of the cavity body filter when the boss top does not swell in the embodiment of the invention;
Fig. 6 is the three-dimensional cross-sectional view of the cavity body filter after the boss top swells in the embodiment of the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
Embodiment one, a kind of cavity body filter, structural representation comprise cavity 210 and resonatron 220 as shown in Figure 2; Described resonatron bottom surface is provided with through hole, described inside cavity has boss 211 on the bottom surface, and 212 middle parts, top of described boss cave inward, the through hole of described resonatron 220 passes in the pre-portion 212 of boss, the top 212 of described boss 211 is subjected to from the expansionary force of described inner recess to the outside, make boss top 212 distortion and swelling, described resonatron 220 is fixed to compressing described resonatron 220.Cavity body filter among the figure only shows part-structure, be appreciated that cavity body filter provided by the invention can also comprise a plurality of boss, and corresponding fixing a plurality of resonatrons, and can comprise conventional structures such as cover plate, tuning screw, these structures are also not shown in the drawings, concrete structure can not be construed as limiting the invention referring to existing cavity body filter.
In order to make more easy deformation of described boss top, can around the depressed part at described boss top, be provided with the breach that makes the boss top be easy to expand outwardly distortion.For example: be provided with four breach around the described depressed part, the quadrangle that adjacent breach line is formed in described four breach is square.Be provided with two breach around the perhaps described depressed part, the axial line of described two breach line place straight lines and described depressed part intersects.Can there be various deformation the breach number or the position that are provided with, and concrete mode is not construed as limiting the invention.
In the embodiment of the invention, pointed tooth in the resonant cavity, general cylindrical being advisable of described boss is from the processing technology of resonatron, consider simultaneously after the deformation of boss top that to the even distribution of resonatron pressure, the top of described boss is cylindrical proper.Described boss can one-body moldedly also can be connected with described cavity in split, and concrete connected mode is not construed as limiting the invention.
Cavity body filter provided by the invention, mode with respect to existing screw locking resonatron, saved material cost, need not complicated assembling action simultaneously, directly making the boss top swell by the pressure head perpendicular to the resonatron bottom surface promptly may assemble resonatron accurately and reliably, make and more simply realize assembly automation, improved efficiency of assembling, reduced assembly cost.
Embodiment two, the present invention also provide a kind of filter cavity, consult Fig. 3, and described cavity 310 is provided with the boss 311 that is used to install resonatron, and the top of described boss is provided with depression 312.
Embodiment three, a kind of resonating tube assembling method, flow chart comprises as shown in Figure 4:
A1 is assembled to the resonatron that the bottom has through hole on the boss of cavity bottom surface with little gap fiting mode; The bottom through-hole of described resonatron is passed at the top of described boss, and described boss top is provided with depressed part;
Generally speaking, in order to satisfy assembly precision, described little matched in clearance is meant that the difference at resonatron aperture and described boss top is less than or equal to 0.2mm.Certainly, different assembly precisions is also different to closely spaced requirement, and concrete size is not construed as limiting the invention.
A2, being caved in internally in the top of described boss with pressure head outwards swells, and the boss top that swells compresses resonatron, and described resonatron is fixed.
Referring to Fig. 5 is the structural representation of the cavity body filter when the boss top does not swell in the embodiment of the invention, comprises among the figure: comprise cavity 510 and resonatron 520; Described resonatron bottom surface is provided with through hole, and described inside cavity has boss 511 on the bottom surface, and the top 512 of described boss caves inward, and the through hole of resonatron 520 is passed at the top 512 of boss.
Consult Fig. 6 and be the three-dimensional cross-sectional view of cavity body filter after the boss top swells in the embodiment of the invention, comprising: cavity 610 and resonatron 620; Described resonatron bottom surface is provided with through hole, described inside cavity has boss 611 on the bottom surface, and overhang 612 middle parts of described boss cave inward, the overhang 612 of boss gos deep into the through hole of resonatron 620, the top 612 of described boss 611 is subjected to from the expansionary force of described depressed part to the outside, make top, boss top 612 distortion and swelling, described resonatron is fixed to compressing described resonatron.
In the present embodiment, described pressure head can be similarly shape such as taper or ellipsoid, and the present invention emphasizes and can make depressed part the swelling from inside to outside of described boss by pressure that concrete pressure head structure does not become limitation of the present invention.
For make to adopt pressure head make depression to around the process that swells be more prone to, can be provided with the breach that makes boss top be easy to expand outwardly distortion all around at the depressed part of boss.Breach can be set to one or more.For example:
Be provided with about four uniform breach of the axial line of described depressed part around the described depressed part, the quadrangle that adjacent breach line is formed in described four breach is square.
Perhaps, be provided with two breach about the axial line symmetry of described depressed part around the described depressed part, the axial line of described two breach line place straight lines and described depressed part intersects.
The implementation of above-mentioned two breach or four breach is giving an example for specific implementation of the present invention only, in actual applications, the designer can adjust breach quantity or gap not according to actual conditions, and concrete breach implementation is not construed as limiting the invention.
In the embodiment of the invention, by the resonatron that the bottom has through hole being assembled on the boss of cavity bottom surface with little gap fiting mode; The overhang on described boss top penetrates the bottom through-hole of described resonatron; Outwards swell from described inner recess with the overhang of conical indenter with described boss, the overhang that swells compresses resonatron, and described resonatron is fixed again.Mode with respect to existing screw locking resonatron, saved material cost greatly, need not the action of rotating simultaneously, directly making the overhang of boss swell by the pressure perpendicular to the resonatron bottom surface promptly may assemble resonant rod accurately and reliably, feasible assembling is more prone to, and has improved efficiency of assembling greatly.
More than cavity body filter that the embodiment of the invention provided and filter cavity and resonating tube assembling method are described in detail, used specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (11)
1. a cavity body filter is characterized in that, comprises cavity and resonatron;
Described resonatron bottom surface is provided with through hole, described inside cavity has boss on the bottom surface, and depressed part is arranged at described boss top, boss passes the through hole of resonatron, described boss is subjected to from the outside expansionary force of described depressed part, make boss top distortion and swell to compressing described resonatron, described resonatron is fixed.
2. cavity body filter as claimed in claim 1 is characterized in that, is provided with the breach that makes the boss top be easy to expand outwardly distortion around the described depressed part.
3. cavity body filter as claimed in claim 2 is characterized in that, is provided with about four uniform breach of the axial line of described depressed part around the described depressed part, and the quadrangle that adjacent breach line is formed in described four breach is square.
4. cavity body filter as claimed in claim 2 is characterized in that, is provided with two breach about the axial line symmetry of described depressed part around the described depressed part, and the axial line of described two breach line place straight lines and described depressed part intersects.
5. as any described cavity body filter of claim 1 to 4, it is characterized in that described boss top is cylindrical.
6. cavity body filter as claimed in claim 5 is characterized in that, described boss and described cavity are one-body molded.
7. a filter cavity is characterized in that, described cavity is provided with the boss that is used to install resonatron, and the top of described boss is provided with depressed part.
8. a resonating tube assembling method is characterized in that, comprising:
With little gap fiting mode the resonatron that the bottom has through hole is assembled on the boss of cavity bottom surface; Described boss passes the bottom through-hole of described resonatron; Depressed part is arranged at described boss top;
With pressure head described boss top is outwards swollen from described depressed part, the boss top that swells compresses resonatron, and described resonatron is fixed.
9. resonating tube assembling method as claimed in claim 8 is characterized in that, is provided with the breach that makes the boss top be easy to expand outwardly distortion around the depressed part of described boss.
10. resonating tube assembling method as claimed in claim 9 is characterized in that, is provided with four breach around the described depressed part, and the quadrangle that adjacent breach line is formed in described four breach is square.
11. resonating tube assembling method as claimed in claim 9 is characterized in that, is provided with two breach around the described depressed part, the axial line of described two breach line place straight lines and described depressed part intersects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010148099A CN101807737A (en) | 2010-04-12 | 2010-04-12 | Cavity filter, filter cavity and resonating tube assembling method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010148099A CN101807737A (en) | 2010-04-12 | 2010-04-12 | Cavity filter, filter cavity and resonating tube assembling method |
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| CN101807737A true CN101807737A (en) | 2010-08-18 |
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| CN201010148099A Pending CN101807737A (en) | 2010-04-12 | 2010-04-12 | Cavity filter, filter cavity and resonating tube assembling method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101938027A (en) * | 2010-09-07 | 2011-01-05 | 深圳市大富科技股份有限公司 | Communication equipment, cavity filter and resonance tube thereof |
| CN101938024A (en) * | 2010-08-19 | 2011-01-05 | 武汉虹信通信技术有限责任公司 | Resonance tube, production method and assembly equipment thereof and cavity filter |
| CN101976750A (en) * | 2010-10-29 | 2011-02-16 | 深圳市大富科技股份有限公司 | Cavity filter |
| CN104485496A (en) * | 2014-12-19 | 2015-04-01 | 云南云天化股份有限公司 | Material for filter chamber and filter chamber |
| CN114335967A (en) * | 2022-01-14 | 2022-04-12 | 安徽广毅达精密科技有限公司 | Resonance rod with bottom compression joint structure |
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| US5739731A (en) * | 1994-01-18 | 1998-04-14 | Allen Telecom Group, Inc. | Self-tuning resonant cavity filter |
| EP0948078A2 (en) * | 1998-04-02 | 1999-10-06 | Space Systems / Loral, Inc. | Single and dual mode helix loaded cavity filters |
| CN200997433Y (en) * | 2006-12-31 | 2007-12-26 | 深圳国人通信有限公司 | Coaxial resonant cavity containing internal conductor with stairs |
| CN101276952A (en) * | 2008-04-15 | 2008-10-01 | 华南理工大学 | Mixed coupling coaxial cavity filter capable of controlling electromagnetism |
| CN101471478A (en) * | 2007-12-27 | 2009-07-01 | 奥雷通光通讯设备（上海）有限公司 | Resonance pole structure for high-power duplexer |
| CN101656341A (en) * | 2009-10-10 | 2010-02-24 | 大富（深圳）科技有限公司 | Resonance tube |
| CN201655939U (en) * | 2010-04-12 | 2010-11-24 | 深圳市大富科技股份有限公司 | Cavity filter and cavity body of filter |
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| CN1065953A (en) * | 1991-04-15 | 1992-11-04 | 莫托罗拉公司 | Dielectric filter and mounting bracket assembly |
| US5739731A (en) * | 1994-01-18 | 1998-04-14 | Allen Telecom Group, Inc. | Self-tuning resonant cavity filter |
| EP0948078A2 (en) * | 1998-04-02 | 1999-10-06 | Space Systems / Loral, Inc. | Single and dual mode helix loaded cavity filters |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101938024A (en) * | 2010-08-19 | 2011-01-05 | 武汉虹信通信技术有限责任公司 | Resonance tube, production method and assembly equipment thereof and cavity filter |
| CN101938027A (en) * | 2010-09-07 | 2011-01-05 | 深圳市大富科技股份有限公司 | Communication equipment, cavity filter and resonance tube thereof |
| CN101938027B (en) * | 2010-09-07 | 2013-04-17 | 深圳市大富科技股份有限公司 | Communication equipment, cavity filter and resonance tube thereof |
| CN101976750A (en) * | 2010-10-29 | 2011-02-16 | 深圳市大富科技股份有限公司 | Cavity filter |
| CN104485496A (en) * | 2014-12-19 | 2015-04-01 | 云南云天化股份有限公司 | Material for filter chamber and filter chamber |
| CN114335967A (en) * | 2022-01-14 | 2022-04-12 | 安徽广毅达精密科技有限公司 | Resonance rod with bottom compression joint structure |
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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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Application publication date: 20100818 |