CN209691917U - Cavity body filter and communication radio frequency equipment - Google Patents
Cavity body filter and communication radio frequency equipment Download PDFInfo
- Publication number
- CN209691917U CN209691917U CN201822138481.9U CN201822138481U CN209691917U CN 209691917 U CN209691917 U CN 209691917U CN 201822138481 U CN201822138481 U CN 201822138481U CN 209691917 U CN209691917 U CN 209691917U
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- cavity
- section
- nut
- tuning screw
- body filter
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- 238000004891 communication Methods 0.000 title claims abstract description 10
- 238000007789 sealing Methods 0.000 claims description 39
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- BVPWJMCABCPUQY-UHFFFAOYSA-N 4-amino-5-chloro-2-methoxy-N-[1-(phenylmethyl)-4-piperidinyl]benzamide Chemical compound COC1=CC(N)=C(Cl)C=C1C(=O)NC1CCN(CC=2C=CC=CC=2)CC1 BVPWJMCABCPUQY-UHFFFAOYSA-N 0.000 abstract description 11
- 239000002184 metal Substances 0.000 description 16
- 229910052751 metal Inorganic materials 0.000 description 16
- 239000012634 fragment Substances 0.000 description 14
- 238000000034 method Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 229920000260 silastic Polymers 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
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Abstract
It includes cavity that the application, which is applied in the cavity body filter of communication radio frequency equipment, tuning screw, cover board, the cover board covers cavity upper end opening, the tuning screw is inserted into inside cavity from the aperture on the cover board, and it can up and down adjustment, the tuning screw include with externally threaded screw rod adjust section and be inserted into cavity in without externally threaded coupled section, nut is installed in aperture on the cover board, the nut includes thread segment and cavity section, the thread segment, which is equipped with, adjusts the internal screw thread that section matches with the screw rod, the cavity section of the nut is mutually fitted close with the coupled section of the tuning screw.The application structure is simple, be easy to remove intracavitary clast, tuner parameters it is good.
Description
Technical field
This application involves the communications fields, more particularly, to the communication of a kind of cavity body filter and the application cavity body filter
Radio-frequency apparatus.
Background technique
Current cavity body filter is the variation that frequency is realized by the depth of adjusting screw rod, tradition as shown in Figure 1
Cavity body filter, tuning structure are cooperated by the threaded hole on screw rod 101 and cover board 102, and the rotation of adjusting screw rod 101 is passed through
Enter depth to adjust the frequency of filter, because what the threaded hole on cover board 102 was through, during tuning, screw rod
101 with the screw thread of cover board 102 during screwing because friction can generate many metal fragments, these clasts are followed by screw rod 101
Screw-in and fall into resonant cavity 103, and these clasts can allow the intermodulation deterioration parameter of filter.Currently used removing tuning
Clast has following two: first is that dismantling the cover board of filter after tuning, then being blown down with air gun broken in cavity
Bits, this method inefficiency, and cover board also need secondary fine tuning after ressembling, and have new clast and fall into inner cavity.Two
It is to design several stomatas on the cover board, the front end stomata after tuning in channel is blown, in the stomata air-breathing of channel end
Mode remove intracavitary clast, finally port sealing is got up again, this scheme improved compared with the first efficiency it is very much, but because
Filter inner-cavity structure is complicated, is difficult to clean out all clasts, and the setting of stomata will affect tuning effect.
Therefore it provides a kind of structure is simple, is easy to remove intracavitary clast, the good cavity body filter of tuner parameters actually
It is necessary.
Summary of the invention
Present invention purpose be to provide a kind of structure is simple, be easy to remove intracavitary clast, tuner parameters it is good
The communication radio frequency equipment of cavity body filter and the application cavity body filter.
In order to solve the above technical problems, the technical solution that the application uses is:
A kind of cavity body filter is provided comprising cavity, tuning screw, cover board, the cover board cover cavity upper end opening,
The tuning screw from the cover board aperture be inserted into inside cavity, and can up and down adjustment, the tuning screw include have
Externally threaded screw rod adjust section and be inserted into cavity without externally threaded coupled section, spiral shell is installed in the aperture on the cover board
Mother, the nut include thread segment and cavity section, and the thread segment, which is equipped with, adjusts the internal screw thread that section matches, institute with the screw rod
The cavity section for stating nut and the coupled section of the tuning screw are mutually fitted close.
The cavity section of the nut is mutually fitted close with the coupled section of the tuning screw, can there is different embodiment party
Formula, as long as can make not having that the gap of metal fragment can be fallen between the cavity section of the nut and the coupled section of the tuning screw
.For example, in some embodiments, the periphery of the coupled section of the tuning screw is smooth surface, it can be with the nut
Close blind-mate on the inside of cavity section.The cavity section of the nut can pass through whole section of inner sidewall and the tuning screw
Coupled section is fitted close, and flange can also be arranged in cavity section bottom, tight with flange inner and the coupled section of the tuning screw
Close fit, and above the cavity section flange, it encloses and is formed between the cavity section, the sealing element, the tuning screw
Chip pocket, metal fragment caused by rotary tuning screw rod are fallen into the chip pocket, and due to the cavity section of the nut with
The tight fit structure of the coupled section of the tuning screw, metal fragment will not fall into cavity.
Can be different according to actual needs for the periphery smoothness requirements of the coupled section of the tuning screw, it can also pass through
Sealing element increases the cooperation tightness of the cavity section of the nut and the coupled section of the tuning screw, as long as can effectively hinder
Only metal fragment falls into cavity.In other embodiments, the coupling of the cavity section of the nut and the tuning screw
It closes and is equipped with sealing element between section, the opposite up and down motion that the coupled section of the tuning screw can be in the sealing element freely,
And make have preferable tight fit between the cavity section of the nut and the coupled section of the tuning screw, to prevent metal fragment
It calls in cavity.
In some embodiments, the sealing element is elastic seal ring.Silicon can be used in specific embodiment, the sealing element
Rubber material, have appropriate elasticity allow the coupled section of the tuning screw in the sealing element freely relatively up and down
Movement, and preferable sealing performance is maintained, to prevent metal fragment from calling in cavity.In some embodiments, the tune
It is interference fit between the coupled section of humorous screw rod and the sealing element, to improve the tightness of cooperation.
In some embodiments, the cavity section lower end of the nut is equipped with locating flange, and it is recessed that the sealing element is equipped with positioning
Slot is matched with the locating flange, and the sealing element is made to be fixed on the cavity section lower end of the nut.The sealing element
Installation it is fixed can also be described using other replacement embodiments, such as the cavity section lower end positioning groove of the nut
The locating flange matched is arranged in sealing element；Alternatively, the setting of multiple groups locating flange and positioning groove；Alternatively, the nut
Installation is threadedly engaged between cavity section and the sealing element to fix；Etc..
In some embodiments, chip pocket is equipped in the cavity section of the nut.In the embodiment for being equipped with sealing element, institute
Chip pocket to be stated to be located above the sealing element, metal fragment caused by rotary tuning screw rod is fallen into the chip pocket, and by
In sealing element blocking without falling into cavity.
In some embodiments, the screw rod tune segment diameter is greater than the coupled section diameter, and rotary tuning screw rod is produced
Raw metal fragment can easily be fallen into chip pocket, but without falling into cavity, not influence tuner parameters, and do not influence to adjust the tune
Humorous screw rod.
In some embodiments, the nut is fixed in the aperture of the cover board using riveting mode, easy to process, knot
Structure is simple, and is adapted to the cover board of various thickness.In some embodiments, the tuning screw upper end is additionally provided with positioning spiral shell
Mother, and washer can be used and positioned.
The application also provides a kind of communication radio frequency equipment comprising the upper cavity body filter.
The orientation word such as upper and lower, is only used as relative concept involved in the application, does not become the limit of the application range
System.
Compared with prior art, the application cavity body filter improves the structure of tuning screw and cover board, by tuning screw
Thread segment is designed to what cover board cooperation was adjusted, and tuning screw and resonator coupled end are designed to non-threaded coupled section, and set
Nut is set, the cavity section of the coupled section and the nut that make tuning screw is fitted close, and metal fragment will not fall into cavity, this
Apply structure is simple, be easy to remove intracavitary clast, tuner parameters it is good.
In addition, sealing element is set and designs chip pocket, the metal of generation in this way, tuning screw rubs during tuning
Clast will be excluded in chip pocket by sealing element, and there is no metal fragments to enter in resonant cavity, prevent filter because of metal
Intermodulation caused by clast is bad.
Detailed description of the invention
Fig. 1 is the cross-sectional view of traditional cavity body filter；
Fig. 2 is the tuning screw diagrammatic cross-section of the application cavity body filter embodiment；
Fig. 3 is the nut of the embodiment of the present application and the diagrammatic cross-section of seal combination；
Fig. 4 is the integrally-built diagrammatic cross-section of the application cavity body filter embodiment；
Fig. 5 is the partial enlarged view of part A in Fig. 4；
Fig. 6 is the schematic diagram of the application communication radio frequency equipment.
Specific embodiment
The application is described in detail with embodiment with reference to the accompanying drawing.
Referring to Fig. 2, the embodiment of the tuning screw 210 of the application cavity body filter, the tuning screw 210 includes band
Have externally threaded screw rod adjust section 211 and be inserted into cavity without externally threaded coupled section 212, in the present embodiment, the coupling
The periphery for closing section 212 is the higher naked body cylindrical body of finish.
Fig. 3~Fig. 5 is please referred to, the application cavity body filter includes cavity 250, resonant rod 251, the tuning screw
210, cover board 220, the resonant rod 251 are set in cavity 250 by screw 252, and the cover board 220 covers on cavity 250
End opening, the tuning screw 210 can go up downward inside aperture (not identifying) the insertion cavity 250 on the cover board 220
Section, to realize tuning.
In the present embodiment, nut 230 is installed, the nut 230 includes thread segment in the aperture on the cover board 220
231 and cavity section 232, as shown in figure 3, the thread segment 231, which is equipped with, adjusts the internal screw thread that section 211 matches with the screw rod
(not identifying), to realize the up and down adjustment of the tuning screw 210.Sealing is provided in the cavity section 232 of the nut 230
Part 240, in the present embodiment, the sealing element 240 is the elastic seal ring of silastic material, has appropriate elasticity to make the tune
The coupled section 212 of humorous screw rod 210 can be in the sealing element 240 freely opposite up and down motion, and maintain preferably
Sealing performance, to prevent metal fragment from calling in cavity 250.
232 lower end of cavity section of the nut 230 is equipped with locating flange 233, and the sealing element 240 is equipped with positioning groove
(not identifying) matches with the locating flange 233, and the sealing element 240 is made to be fixed on the cavity section of the nut 230
232 lower ends.The installation of the sealing element 240 is fixed can also be using other replacement embodiments, such as the appearance of the nut 230
232 lower end positioning groove of chamber section, and the locating flange 233 matched is arranged in the sealing element 240；Alternatively, multiple groups locating flange
233 with the setting of positioning groove；Alternatively, being threadedly engaged peace between the cavity section 232 and the sealing element 240 of the nut 230
Dress is fixed；Etc..
It is interference fit between the coupled section 212 and the sealing element 240 of the tuning screw 210 in specific embodiment,
To improve the tightness of cooperation.
Chip pocket 234 is equipped in the cavity section 232 of the nut 230, the chip pocket 234 is located at the sealing element 240
Top, below the thread segment 231 of the nut 230, in the cavity section 232, the sealing element 240, the tuning screw
It is enclosed between 210 and sets to be formed, and the chip pocket 234 is communicated with the thread segment 231 of the nut 230,210 institute of rotary tuning screw rod
The metal fragment of generation is fallen into the chip pocket 234, and since the blocking of sealing element 240 is without falling into cavity 250.
The screw rod adjusts 211 diameter of section and is greater than 212 diameter of coupled section, gold caused by rotary tuning screw rod 210
Belonging to clast can easily fall into chip pocket 234, but without falling into cavity 250, prevent filter because of intermodulation caused by metal fragment
It is bad.
The nut 230 is fixed in the aperture of the cover board 220 using riveting mode, and easy to process, structure is simple, and
It is adapted to the cover board 220 of various thickness.In some embodiments, 210 upper end of tuning screw is additionally provided with location nut
253, and washer 254 can be used and positioned.
Referring to Fig. 6, the application also provides a kind of communication radio frequency equipment 300, including cavity body filter 200, the cavity
Filter 200 is cavity body filter described in the various embodiments described above.
The application structure is simple, be easy to remove intracavitary clast, tuner parameters it is good.It is upper and lower involved in the application
Etc. orientation word, only be used as relative concept, not become the application range limitation.
The foregoing is merely presently filed embodiments, are not intended to limit the scope of the patents of the application, all to utilize this
Equivalent structure or equivalent flow shift made by application specification and accompanying drawing content, it is relevant to be applied directly or indirectly in other
Technical field similarly includes in the scope of patent protection of the application.
Claims (9)
1. a kind of cavity body filter comprising cavity is stated in cavity, tuning screw, cover board, the cover plate lid residence, on the cover board
Equipped with aperture, the tuning screw is inserted into inside cavity from the aperture on the cover board, and can up and down adjustment, which is characterized in that
The tuning screw include with externally threaded screw rod adjust section and be inserted into cavity in without externally threaded coupled section, the lid
Nut is installed in the aperture on plate, the nut includes thread segment and cavity section, the thread segment of the nut be equipped with it is described
Screw rod adjusts the internal screw thread that section matches, and the cavity section of the nut is mutually fitted close with the coupled section of the tuning screw.
2. cavity body filter according to claim 1, which is characterized in that the cavity section of the nut and the tuning screw
Coupled section between be equipped with sealing element.
3. cavity body filter according to claim 2, which is characterized in that the sealing element is elastic seal ring.
4. cavity body filter according to claim 2, which is characterized in that the coupled section of the tuning screw and the sealing
It is interference fit between part.
5. cavity body filter according to claim 2, which is characterized in that the cavity section of the nut, the sealing element, institute
It states and encloses between tuning screw equipped with chip pocket.
6. cavity body filter according to claim 5, which is characterized in that the screw rod tune segment diameter is greater than the coupling
Section diameter.
7. cavity body filter according to claim 2, which is characterized in that the cavity section lower end of the nut is equipped with convex
Edge, the sealing element are equipped with positioning groove and match with the locating flange, and the sealing element is made to be fixed on the nut
Cavity section lower end.
8. described in any item cavity body filters according to claim 1~7, which is characterized in that the nut uses riveting mode
It is fixed in the aperture of the cover board.
9. a kind of communication radio frequency equipment, which is characterized in that including any cavity body filter of claim 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822138481.9U CN209691917U (en) | 2018-12-18 | 2018-12-18 | Cavity body filter and communication radio frequency equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822138481.9U CN209691917U (en) | 2018-12-18 | 2018-12-18 | Cavity body filter and communication radio frequency equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209691917U true CN209691917U (en) | 2019-11-26 |
Family
ID=68596246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822138481.9U Active CN209691917U (en) | 2018-12-18 | 2018-12-18 | Cavity body filter and communication radio frequency equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209691917U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023273032A1 (en) * | 2021-06-29 | 2023-01-05 | 大富科技(安徽)股份有限公司 | Resonator, filter, duplexer, multiplexer, and communication device |
| CN117134084A (en) * | 2023-09-01 | 2023-11-28 | 深圳国人科技股份有限公司 | Method for reducing tuning scraps of filter and filter |
-
2018
- 2018-12-18 CN CN201822138481.9U patent/CN209691917U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023273032A1 (en) * | 2021-06-29 | 2023-01-05 | 大富科技(安徽)股份有限公司 | Resonator, filter, duplexer, multiplexer, and communication device |
| CN117134084A (en) * | 2023-09-01 | 2023-11-28 | 深圳国人科技股份有限公司 | Method for reducing tuning scraps of filter and filter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
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, A4 first, second, third layers Patentee before: SHENZHEN TATFOOK TECHNOLOGY Co.,Ltd. |
|
| CP03 | Change of name, title or address |