CN204927465U - Cavity filter that reliability is high - Google Patents
Cavity filter that reliability is high Download PDFInfo
- Publication number
- CN204927465U CN204927465U CN201520686377.7U CN201520686377U CN204927465U CN 204927465 U CN204927465 U CN 204927465U CN 201520686377 U CN201520686377 U CN 201520686377U CN 204927465 U CN204927465 U CN 204927465U
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- Prior art keywords
- facing
- cavity
- tuning screw
- cover plate
- screw
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000011889 copper foil Substances 0.000 claims abstract description 16
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 10
- 239000004411 aluminium Substances 0.000 claims abstract description 4
- 239000004677 Nylon Substances 0.000 claims description 7
- 229920001778 nylon Polymers 0.000 claims description 7
- 230000004888 barrier function Effects 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- 230000006978 adaptation Effects 0.000 abstract 1
- 238000001125 extrusion Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 18
- 238000000034 method Methods 0.000 description 5
- 238000004891 communication Methods 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000010295 mobile communication Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
Landscapes
- Control Of Motors That Do Not Use Commutators (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The utility model relates to a wave filter field, concretely relates to cavity filter that reliability is high, including upper end open -ended cavity, detachable lid locate the cavity upper end the apron, install in the tuning screw rod on apron upper portion, install in cavity bottom and the relative resonance post that sets up with tuning screw rod, the apron is including aluminium base layer and copper foil layer, the copper foil layer complex is on the aluminium base layer and towards the cavity, threaded hole is seted up along the thickness direction to the apron, tuning screw rod passes the screw hole stretches into inside the cavity, still include the elastic plate on the copper foil layer that attaches to the apron, tuning screw rod include the main part, can the screw in the threaded hole of apron and the facing of looks adaptation meshing with it, the one end of main part has the external screw thread, the facing presets in threaded hole, make tuning screw rod fasten the threaded hole at the apron with the extrusion facing in the external screw thread screw in facing. The utility model discloses debug efficient, the intermodulation is effectual, the reliability is high.
Description
Technical field
The utility model relates to filter field, particularly relates to the cavity body filter that a kind of reliability is high.
Background technology
Along with the development of mobile communication, the telephone traffic that user uses mobile phone to produce in building increases day by day, require that indoor also cover good Mobile Communication Service, but because body of wall is thicker, area is comparatively large, the more high reason of floor in building, often there is network blind area of coverage, meanwhile, between each operator, the keen competition of user is also made indoor communications overlay network increase, disturbs aggravation, people is the deterioration causing communication quality, produces Intermodulation Interference.Intermodulation Interference refers to two different frequency signals, superposes and the signal of the new frequency of generation, when this signal drops in frequency acceptance band, will affect the normal reception of telecommunication apparatus in a certain system.
Cavity body filter, as a kind of frequency selection device, for selecting communication signal frequency and clutter outside filtering communication signal frequency or interference signal, is widely used in mobile base station, to reduce inter-modulated signal interference.
Intermodulation is the important indicator of filter product, but cavity body filter of the prior art generally comprises cavity, cover plate, resonant column and tuning screw, cover plate is provided with screwed hole, tuning screw stretches in resonant cavity by the screwed hole on cover plate, form structure capacitive with resonant column, regulate filter by the depth regulating tuning screw to screw in cover plate.On the one hand, under this regulative mode, the structure capacitive between resonant column and tuning screw is less, and debug time is long, debugging weak effect, causes the poor reliability of cavity body filter; On the other hand, the gross thickness of cover plate only has 3mm, the current density of tuning screw and cover inner surface binding site is very large, again because of screw thread always helical form, always end is had at the last half-turn screw thread of cover inner surface, this last half-turn screw thread can not well and cover plate combine closely, cause intermodulation weak effect further, poor reliability.
Utility model content
Based on this, be necessary to provide the cavity body filter that a kind of debugging efficiency is high, intermodulation is effective reliability is high.
The purpose of this utility model realizes by following technical proposal: the cavity body filter that a kind of reliability is high, comprise the cavity of upper end open, dismountable be covered on cavity upper end cover plate, the tuning screw being installed on cover plate top, be installed on cavity bottom and the resonant column be oppositely arranged with tuning screw; Described cover plate comprises aluminum base layer and copper foil layer, and described copper foil layer is compounded in aluminium base sheet material layers and towards cavity, described cover plate through-thickness offers screwed hole, and described tuning screw stretches into inside cavity through described screwed hole; Also comprise the elastic plate be attached on the copper foil layer of cover plate; Described tuning screw comprises main body, the screwed hole of described cover plate can be screwed in and can the facing of suitable engagement with it, one end of described main body has external screw thread, described facing is preset in screwed hole, described in screw in facing and to extrude facing, tuning screw be fastened in the screwed hole of cover plate.
Being improved to further technique scheme, described facing is nylon elastic part, described in screw into and make facing produce deformation engaging with it.
Being improved to further technique scheme, described facing is overall cylindrical helicoid.
Being improved to further technique scheme, the body ends of described tuning screw is arranged with insulating barrier.
The beneficial effects of the utility model are:
1, tuning screw comprises main body, can to screw in the screwed hole of cover plate and can the facing of suitable engagement with it, one end of main body has external screw thread, by facing is preset in screwed hole, the male end of main body being screwed in is provided with in the screwed hole of facing again, and extrude facing, make tuning screw to be fastened in the screwed hole of cover plate by the frictional force of both sides inside and outside facing thus to realize self-locking.On the one hand, due to the self-locking of tuning screw energy, do not need by nut, tuning screw to be installed on the cover board, be conducive to saving material, reduce costs, debug process do not need rotating nut, improves debugging efficiency; Second aspect, combines closely between cover plate and tuning screw, and tuning screw is little to intermodulation effects with cover plate binding site, is conducive to raising intermodulation effect, makes reliability of the present utility model higher; The third aspect, cover plate comprises aluminum base layer and copper foil layer, and electromagnetic wave conducting power is strong, is conducive to improving effectiveness; Fourth aspect, the copper foil layer of cover plate is attached with elastic plate, deformation can be there is under the left and right of tuning screw, thus change the distance of elastic plate and resonant column, to carry out tuning to the parameter of filter, and elastic plate be arranged so that isolate between tuning screw and cavity, reduce tuning screw to the Intermodulation Interference of cavity, be conducive to further improving intermodulation effect, improve reliability of the present utility model.
2, facing is the elastic component be made up of nylon, nylon not only has certain elasticity, also has certain rigidity, facing and the frictional force between screwed hole and external screw thread can be ensured, ensure the reliability connected, screw into and make facing produce deformation and engage with it, certain deformation will be produced when facing is assembled in the screwed hole of cover plate or when assembling mutually with the main body of tuning screw, as stretched, thus the main body of tuning screw is not easily skidded, firm connection, and can prevent it from loosening, further reduction tuning screw and cover plate binding site little to intermodulation effects, improve intermodulation effect, further raising reliability of the present utility model.
3, facing is overall cylindrical helicoid, end face is rounded, facing is easy to screw in screwed hole, simultaneously can with the screwed hole of circle in conjunction with fastening, further reduction tuning screw and cover plate binding site little to intermodulation effects, improve intermodulation effect, improve reliability of the present utility model further.
4, the body ends of tuning screw is arranged with insulating barrier, the field intensity on tuning screw can be reduced, reduce the current density of tuning screw and cover inner surface binding site, the impact of tuning screw on intermodulation significantly can be reduced when ensureing regulating frequency, improve intermodulation effect further, improve reliability of the present utility model.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of tuning screw of the present utility model;
Fig. 3 is the structural representation of tuning screw of the present utility model removing facing;
Fig. 4 is the structural representation of the facing of tuning screw of the present utility model.
Embodiment
As shown in Figure 1, structural representation of the present utility model is respectively.
Cavity 110 filter 100 that a kind of reliability is high, comprise the cavity 110 of upper end open, dismountable be covered on cavity 110 upper end cover plate 120, the tuning screw 130 being installed on cover plate 120 top, to be installed on bottom cavity 110 and the resonant column 140 be oppositely arranged with tuning screw 130.Cover plate 120 comprises aluminum base layer 121 and copper foil layer 122, copper foil layer 122 to be compounded in aluminum base layer 121 and towards cavity 110, cover plate 120 through-thickness offers screwed hole 123, it is inner that tuning screw 130 stretches into cavity 110 through screwed hole 123, also comprises the elastic plate 150 be attached on the copper foil layer 122 of cover plate 120.
As shown in Figures 2 and 3, the structural representation of tuning screw of the present utility model and the structural representation after removing facing is respectively.Tuning screw 130 comprises main body 131, can screw in the screwed hole 123 of cover plate 120 and can the facing 132 of suitable engagement with it, one end of main body 131 has external screw thread 133, facing 132 is preset in screwed hole 123, and external screw thread 133 screws in facing 132 and makes tuning screw 130 be fastened in the screwed hole 123 of cover plate 120 to extrude facing 132;
As shown in Figure 4, be the structural representation of the facing of tuning screw of the present utility model.Facing 132 is the elastic component be made up of nylon, and external screw thread 133 screws in and makes facing 132 produce deformation and engage with it.Facing 132 is overall cylindrical helicoid.The main body 131 of tuning screw 130 is arranged with insulating barrier 134.
On the one hand, because tuning screw 130 can self-locking, do not need by nut, tuning screw 130 to be arranged on cover plate 120, be conducive to saving material, reduce costs, debug process do not need rotating nut, improve debugging efficiency; Second aspect, combine closely between cover plate 120 and tuning screw 130, tuning screw 130 is little to intermodulation effects with cover plate 120 binding site, is conducive to improving intermodulation effect, makes reliability of the present utility model higher; The third aspect, cover plate 120 comprises aluminum base layer 121 and copper foil layer 122, and electromagnetic wave conducting power is strong, is conducive to improving effectiveness; Fourth aspect, the copper foil layer 122 of cover plate 120 is attached with elastic plate 150, deformation can be there is under the left and right of tuning screw 130, thus change the distance of elastic plate 150 and resonant column 140, to carry out tuning to the parameter of filter 100, and elastic plate 150 be arranged so that isolate between tuning screw 130 and cavity 110, reduce the Intermodulation Interference of tuning screw 130 pairs of cavitys 110, be conducive to further improving intermodulation effect, improve reliability of the present utility model.
Facing 132 is the elastic component be made up of nylon, nylon not only has certain elasticity, also has certain rigidity, facing 132 and the frictional force between screwed hole 123 and external screw thread 133 can be ensured, ensure the reliability connected, external screw thread 133 screws in and makes facing 132 produce deformation and engage with it, certain deformation will be produced when facing 132 is assembled in the screwed hole 123 of cover plate 120 or when assembling with main body 131 phase of tuning screw, as stretched, thus the main body 131 of tuning screw 130 is not easily skidded, firm connection, and can prevent it from loosening, further reduction tuning screw 130 is little to intermodulation effects with cover plate 120 binding site, improve intermodulation effect, further raising reliability of the present utility model.
Facing 132 is overall cylindrical helicoid, end face is rounded, facing 132 is easy to screw in screwed hole 123, simultaneously can with the screwed hole 123 of circle in conjunction with fastening, further reduction tuning screw 130 is little to intermodulation effects with cover plate 120 binding site, improve intermodulation effect, improve reliability of the present utility model further.
The main body 131 of tuning screw 130 is arranged with insulating barrier 134, the field intensity on tuning screw 130 can be reduced, reduce the current density of tuning screw 130 and cover plate 120 inner surface binding site, the impact of tuning screw 130 on intermodulation significantly can be reduced when ensureing regulating frequency, improve intermodulation effect further, improve reliability of the present utility model.
Operation principle of the present utility model is:
First, by facing 132 is preset in screwed hole 123, being screwed in by external screw thread 133 end of main body 131 is provided with in the screwed hole 123 of facing 132 again, then carry out tuning, by the screw-in gradually of tuning screw 130, tuning screw 130 is extruding elastic plate 150 downwards, and slight deformation occurs elastic plate 150, thus changing the distance of elastic plate 150 and resonant column 140, the parameter realizing filter 100 is tuning; Finally, after tuning, extruding facing 132, makes tuning screw 130 to be fastened in the screwed hole 123 of cover plate 120 by the frictional force of both sides inside and outside facing 132 thus to realize self-locking.
The above embodiment only have expressed several execution mode of the present utility model, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection range of the present utility model.Therefore, the protection range of the utility model patent should be as the criterion with claims.
Claims (4)
1. the cavity body filter that reliability is high, is characterized in that: comprise the cavity of upper end open, dismountable be covered on cavity upper end cover plate, the tuning screw being installed on cover plate top, be installed on cavity bottom and the resonant column be oppositely arranged with tuning screw; Described cover plate comprises aluminum base layer and copper foil layer, and described copper foil layer is compounded in aluminium base sheet material layers and towards cavity, described cover plate through-thickness offers screwed hole, and described tuning screw stretches into inside cavity through described screwed hole; Also comprise the elastic plate be attached on the copper foil layer of cover plate; Described tuning screw comprises main body, the screwed hole of described cover plate can be screwed in and can the facing of suitable engagement with it, one end of described main body has external screw thread, described facing is preset in screwed hole, described in screw in facing and to extrude facing, tuning screw be fastened in the screwed hole of cover plate.
2. the cavity body filter that a kind of reliability according to claim 1 is high, is characterized in that: described facing is nylon elastic part, described in screw into and make facing produce deformation engaging with it.
3. the cavity body filter that a kind of reliability according to claim 2 is high, is characterized in that: described facing is overall cylindrical helicoid.
4. the cavity body filter that a kind of reliability according to claim 3 is high, is characterized in that: the body ends of described tuning screw is arranged with insulating barrier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520686377.7U CN204927465U (en) | 2015-09-07 | 2015-09-07 | Cavity filter that reliability is high |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520686377.7U CN204927465U (en) | 2015-09-07 | 2015-09-07 | Cavity filter that reliability is high |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204927465U true CN204927465U (en) | 2015-12-30 |
Family
ID=54976567
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520686377.7U Expired - Fee Related CN204927465U (en) | 2015-09-07 | 2015-09-07 | Cavity filter that reliability is high |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204927465U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108631027A (en) * | 2017-03-17 | 2018-10-09 | Ace技术株式会社 | Utilize the RF cavity body filters and its manufacturing method of elastomer |
| US20190252750A1 (en) * | 2016-10-25 | 2019-08-15 | Kmw Inc. | Radio frequency filter having cavity structure |
| CN112467320A (en) * | 2020-11-24 | 2021-03-09 | 无锡爱德为科技有限公司 | Filter and tuning method and processing equipment thereof |
-
2015
- 2015-09-07 CN CN201520686377.7U patent/CN204927465U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20190252750A1 (en) * | 2016-10-25 | 2019-08-15 | Kmw Inc. | Radio frequency filter having cavity structure |
| JP2019531664A (en) * | 2016-10-25 | 2019-10-31 | ケーエムダブリュ・インコーポレーテッド | Radio frequency filter with cavity structure |
| EP3534455A4 (en) * | 2016-10-25 | 2020-05-27 | KMW Inc. | Radio frequency filter having cavity structure |
| US10998603B2 (en) | 2016-10-25 | 2021-05-04 | Kmw Inc. | Radio frequency filter having cavity structure |
| JP7171554B2 (en) | 2016-10-25 | 2022-11-15 | ケーエムダブリュ・インコーポレーテッド | Radio frequency filter with cavity structure |
| CN108631027A (en) * | 2017-03-17 | 2018-10-09 | Ace技术株式会社 | Utilize the RF cavity body filters and its manufacturing method of elastomer |
| US10505244B2 (en) | 2017-03-17 | 2019-12-10 | Ace Technologies Corporation | RF cavity filter using elastic element and method for manufacturing the same |
| CN112467320A (en) * | 2020-11-24 | 2021-03-09 | 无锡爱德为科技有限公司 | Filter and tuning method and processing equipment thereof |
| CN112467320B (en) * | 2020-11-24 | 2022-06-03 | 无锡爱德为科技有限公司 | Filter and tuning method and processing equipment thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180212 Address after: 518000 Shenzhen Baoan District Songgang street Baoan District Songgang street Luotian community Third Industrial Zone No. 8 Jaguar electronic G Building 2 layer 201 Patentee after: Shenzhen city high goochi Technology Co. Ltd. Address before: No. 38, Xin Wan Village, Xin Wan Village, Sha Wo Village, Hubei, Ezhou, Hubei Patentee before: Li Dengfeng |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151230 Termination date: 20200907 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |