CN104795615B - Cavity filter - Google Patents
Cavity filter Download PDFInfo
- Publication number
- CN104795615B CN104795615B CN201410028643.7A CN201410028643A CN104795615B CN 104795615 B CN104795615 B CN 104795615B CN 201410028643 A CN201410028643 A CN 201410028643A CN 104795615 B CN104795615 B CN 104795615B
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- CN
- China
- Prior art keywords
- cavity
- resonatron
- adjusting screw
- cavity filter
- resonance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
A kind of cavity filter, including cavity, resonatron, adjust screw and upper cover, upper cover is covered on cavity, cavity includes well floor, resonatron is fixed on well floor, resonatron and well floor offer threaded hole, adjust screw out of threaded hole opening precession cavity, and then adjust the resonance frequency of cavity filter.By opening up threaded hole in resonatron and cavity bottom, allows adjusting screw to go from threaded hole opening precession, the space except cavity filter cavity has been saved, so that space needed for accommodating cavity filter becomes smaller.
Description
Technical field
The present invention relates to a kind of cavity filter more particularly to a kind of cavity filters for saving containment portion space.
Background technique
Cavity filter is one of component common in a kind of communication system, and cavity filter generally includes upper cover and multiple
Cavity is equipped with one or more resonatrons in each cavity, and the function of each cavity is equivalent to an electronics oscillating circuit, existing
Cavity filter be all to fix several adjustings screws and corresponding nut on lid on cavity, but adjust screw and consolidate
Due on upper lid, the flatness of upper cover is influenced, and occupies the exterior space of cavity.
Summary of the invention
In view of this, it is desirable to provide a kind of cavity filter for preventing from adjusting the external space that screw occupies cavity.
One of one embodiment of the present invention cavity filter, including cavity, resonatron, adjusting screw and upper cover,
Upper cover is covered on cavity, and cavity includes well floor, and resonatron is fixed on cavity, and resonatron and well floor offer screw thread
Hole adjusts screw out of threaded hole opening precession cavity, and then adjusts the resonance frequency of cavity filter.
Preferably, the cavity filter further includes auxiliary annulus, is located between upper cover and debugging screw, and auxiliary annulus increases
Add the range of cavity filter debugging frequency.
Preferably, the interior diameter of annulus is assisted to be greater than the diameter of section for adjusting screw.
Preferably, threaded hole runs through resonatron and well floor, adjusts screw from threaded hole opening precession cavity, no
Occupy the space except cavity.
Preferably, adjusting screw does not have nut, is equipped with a cross recess in the end for adjusting screw, facilitates and revolved with screwdriver
Modulation section screw.
Preferably, cavity filter further includes resonance cup, and resonance cup is cup-shaped, and there is aperture in centre, the welding of resonance cup
Mode is fixed on resonatron.
Preferably, auxiliary annulus is placed in resonance cup, is not take up the space of inside cavity.
Preferably, the mode of auxiliary annulus welding is fixed on upper cover.
The present invention solves the problems, such as the upper Gai Shangyou screw of original cavity filter and leads to upper cover out-of-flatness, and adjusts
Section screw runs through from resonatron and well floor, is not take up the space above cavity upper cover, reduces accommodating cavity filter institute
The space occupied.
Detailed description of the invention
Fig. 1 is the sectional view of cavity filter of the present invention.
Fig. 2 is the cavity of cavity filter of the present invention and the perspective view of resonatron.
Fig. 3 is the perspective view of the adjusting screw of cavity filter of the present invention.
Fig. 4 is the perspective view of the resonance cup of cavity filter of the present invention.
Main element symbol description
Cavity filter 10
Cavity 11
Well floor 111
Threaded hole 112
Resonatron 12
Step surface 121
Adjust screw 13
Cross recess 131
Resonance cup 14
First resonance cup justifies wall 141
Second resonance cup justifies wall 142
Resonance cup extension side 143
Assist annulus 15
Upper cover 16
Lower specific embodiment will further illustrate the present invention in conjunction with above-mentioned attached drawing.
Specific embodiment
Refering to fig. 1, shown cavity filter 10 includes cavity 11, resonatron 12, adjusts screw 13, resonance cup 14 and upper cover
16, upper cover 16 is a thin-slab structure, and upper cover 16 is covered on cavity 11, and resonatron 12 and cavity 11 are integrally formed.Upper cover 16
The centre of lower surface is fixed with an auxiliary annulus 15, and auxiliary annulus 15 is a hollow circular cylinder, is located at and adjusts screw
The interior diameter of 13 surface, auxiliary annulus 15 is greater than the diameter of section for adjusting screw 13, is rotated into upwards when adjusting screw 13
Enter in the auxiliary annulus 15, auxiliary annulus 15, which encases, adjusts screw 13, thus changes corresponding with screw 13 is adjusted
The area of upper cover lower surface and change distribution capacity, and then help change cavity filter debugging frequency range.In addition, auxiliary
Annulus 15 can be placed in resonance cup 14, so being not take up the inner space of cavity 11.
Refering to Fig. 2 to Fig. 3, cavity 11 includes well floor 111, and resonatron 12 is integrally in column structure, is divided into upper and lower two
A diameter of section cylinder in different size, forms a step surface 121 between two cylinders, among well floor 111 and resonance
Run through among pipe 12 by threaded hole 112, adjusting screw 13 does not have nut, there is a cross recess 131 in the bottom for adjusting screw 13,
Facilitate and use screwdriver turning adjusting screw 13, adjusts screw 13 from 112 opening precession of threaded hole, be not take up the upper cover of cavity 11
16 upper space adjusts the resonance frequency of cavity filter 10 by turning adjusting screw 13.
Refering to Fig. 4, resonance cup 14 is cup-shaped, and centre forms through-hole, and resonance cup 14 can change the resonance of cavity filter
Frequency, resonance cup 14 include the first resonance cup circle wall 141, the second resonance cup circle wall 142 and resonance cup extension side 143, and first is humorous
Vibration cup circle wall 141 and the second resonance cup circle wall 142 are two different cylindrical structures of diameter, and resonance cup extension side 143 is the
Caused by two resonance cups circle wall 142 is laterally extended, when installation, the first resonance cup circle wall 141 is fixed on resonatron 12, step surface
121 withstand the first resonance cup circle wall 141.
In the specific embodiment of the invention, auxiliary annulus 15 can be fixed on upper cover 16 by way of spot welding or others.
In the specific embodiment of the invention, the inner diameter size and resonance of the first resonance cup circle wall 141 on resonance cup 14
The diameter dimension of a cylinder of the upper surface of pipe 12 is identical, and the inner diameter size of the first resonance cup circle wall 141 does tolerance, resonance
The diameter dimension of a cylinder of the upper surface of pipe 12 does lower tolerance, resonance cup 14 and resonatron 12 can be allowed to be fitted close in this way, so
After can use electric welding resonance cup 14 and resonatron 12 are welded together.
In the specific embodiment of the invention, well floor 111 and resonatron 12 are integrally formed by die casting, resonance cup 14
Second of essence can be done after well floor 111 and resonatron 12,14 die cast of resonance cup by die casting and machining
Processing.So that size is able to satisfy our matching requirements.
Very good solution of the present invention cause because adjusting screw 13 and being located in 11 upper cover 16 of cavity 16 out-of-flatness of upper cover with
The problem of screw 13 occupies 16 upper space of upper cover is adjusted, not only appearance is beautiful by the present invention, and has saved accommodating cavity filter
Space.
The above are a specific embodiment of the invention, and the description thereof is more specific and detailed, but it cannot be understood as
Limitations on the scope of the patent of the present invention, it is noted that it will be apparent to those skilled in the art that not departing from inventive concept
Under the premise of, some deformations can also be made, these obvious replacements all belong to the scope of protection of the present invention.
Claims (8)
1. a kind of cavity filter, including cavity, resonatron, adjusting screw, auxiliary annulus, resonance cup and upper cover, the upper cover
It is covered on the cavity, the cavity includes well floor, and the resonatron is fixed on the well floor, it is characterised in that:
The auxiliary annulus is placed in the resonance cup, and the resonatron and the well floor offer threaded hole, the adjusting
Screw adjusts the resonance frequency of the cavity filter out of described in the threaded hole opening precession cavity；It is described auxiliary
Annulus is helped to be located between the upper cover and the adjusting screw, the adjusting screw screws in the auxiliary circle from the well floor
Ring, to change the intracorporal distribution capacity of the chamber；The resonatron includes step surface, and the resonance cup includes the first resonance cup circle
Wall, the first resonance cup circle wall set are fixed in the resonatron, and the step surface withstands the first resonance cup circle wall, by institute
Resonatron is stated to be assembled together with the resonance cup.
2. cavity filter as described in claim 1, it is characterised in that: when the adjusting screw screws in the auxiliary annulus
When, the auxiliary annulus encase the adjusting screw with change with the area of the corresponding upper cover lower surface of the adjusting screw and
Change the intracorporal distribution capacity of the chamber, to increase the range of the cavity filter debugging frequency.
3. cavity filter as claimed in claim 2, it is characterised in that: the interior diameter of the auxiliary annulus is greater than the adjusting
The diameter of section of screw.
4. cavity filter as described in claim 1, it is characterised in that: the threaded hole is by the resonatron and the cavity
Bottom plate runs through, and the adjusting screw is not take up the space except the cavity from cavity described in the threaded hole opening precession.
5. cavity filter as described in claim 1, it is characterised in that: the adjusting screw does not have nut, in the adjusting
The end of screw is equipped with a cross recess, facilitates and rotates the adjusting screw with screwdriver.
6. cavity filter as described in claim 1, it is characterised in that: the resonance cup is cup-shaped, and there is aperture in centre, described
Resonance cup is fixed on the resonatron in the way of welding.
7. cavity filter as described in claim 1, it is characterised in that: the resonatron and the well floor utilize die casting
Mode be integrally formed.
8. cavity filter as described in claim 1, it is characterised in that: the mode of the auxiliary annulus welding is fixed on institute
State upper cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410028643.7A CN104795615B (en) | 2014-01-22 | 2014-01-22 | Cavity filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410028643.7A CN104795615B (en) | 2014-01-22 | 2014-01-22 | Cavity filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104795615A CN104795615A (en) | 2015-07-22 |
| CN104795615B true CN104795615B (en) | 2019-03-05 |
Family
ID=53560257
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410028643.7A Expired - Fee Related CN104795615B (en) | 2014-01-22 | 2014-01-22 | Cavity filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104795615B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI622221B (en) | 2017-03-23 | 2018-04-21 | 鴻海精密工業股份有限公司 | Cavity filter |
| CN108631029B (en) * | 2017-03-23 | 2021-04-27 | 鸿富锦精密工业（深圳）有限公司 | Cavity filter |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101315999A (en) * | 2008-06-27 | 2008-12-03 | 华为技术有限公司 | Screw device and cavity filter using the same |
| CN102354780A (en) * | 2011-07-22 | 2012-02-15 | 深圳市大富科技股份有限公司 | Cavity filter and communication device |
| CN203119067U (en) * | 2013-01-25 | 2013-08-07 | 华为技术有限公司 | Cavity filter |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE519554C2 (en) * | 1999-04-14 | 2003-03-11 | Ericsson Telefon Ab L M | Screw device and trim device comprising such a screw device for trimming the frequency ratio or degree of coupling of a cavity filter |
| TWM370077U (en) * | 2009-06-18 | 2009-12-01 | Hon Hai Prec Ind Co Ltd | Testing probe assembly of a cavity filter |
| CN203180029U (en) * | 2013-03-20 | 2013-09-04 | 深圳市大富科技股份有限公司 | Cavity filter and radio frequency communication device |
| CN203351722U (en) * | 2013-05-15 | 2013-12-18 | 成都联帮微波通信工程有限公司 | Small-scale cavity filter |
-
2014
- 2014-01-22 CN CN201410028643.7A patent/CN104795615B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101315999A (en) * | 2008-06-27 | 2008-12-03 | 华为技术有限公司 | Screw device and cavity filter using the same |
| CN102354780A (en) * | 2011-07-22 | 2012-02-15 | 深圳市大富科技股份有限公司 | Cavity filter and communication device |
| CN203119067U (en) * | 2013-01-25 | 2013-08-07 | 华为技术有限公司 | Cavity filter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104795615A (en) | 2015-07-22 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190305 Termination date: 20210122 |
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| CF01 | Termination of patent right due to non-payment of annual fee |