CN204966642U - Novel cavity filter - Google Patents
Novel cavity filter Download PDFInfo
- Publication number
- CN204966642U CN204966642U CN201520590642.1U CN201520590642U CN204966642U CN 204966642 U CN204966642 U CN 204966642U CN 201520590642 U CN201520590642 U CN 201520590642U CN 204966642 U CN204966642 U CN 204966642U
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- CN
- China
- Prior art keywords
- cavity
- cover plate
- installing hole
- resonant rod
- resonant
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- Expired - Fee Related
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Abstract
The utility model provides a simple structure and firm in connection's novel cavity filter, including cavity and apron, the apron sealed cavity bodily form becomes the resonant cavity, the apron is equipped with the mounting hole of following the thickness direction and running through, is equipped with the resonance bar that one end was fixed in the mounting hole, the other end stretches out to the bottom of cavity in the resonant cavity, resonance bar fixes in the mounting hole of apron through welding, riveting or screw thread connection.
Description
Technical field
The utility model relates to communication equipment field, is specifically related to a kind of novel cavity filter.
Background technology
In existing cavity body filter, resonant rod is generally fixed on the bottom of cavity.Specifically, in prior art, the tubular that resonant rod generally claims the one end open other end to close, the end face of resonant rod blind end offers via hole, cavity diapire has integrated installation base with it, and installation base is provided with the screwed hole extended along cavity thickness direction.During fixing resonance bar, first the blind end end face of resonant rod is connected on installation base, then with screw, resonant rod is fixed on installation base.
Due to the finite thickness of cavity diapire, and due to the requirement of cavity body filter miniaturization, the height of cavity can not be excessive, the height of corresponding installation base can not be excessive, therefore the length of thread engagement (LE) of screw and installation base generally only has the screw diameter of 1.1 times, make the connection weak effect of resonant rod and cavity, easily loosen, in order to increase fixed effect, after general needs put glue on the external screw thread of screw, then screw is threaded with the screwed hole of installation base through the via hole of resonant rod.
Summary of the invention
The purpose of this utility model provides a kind of structure simple and the novel cavity filter be connected firmly to overcome above-mentioned the deficiencies in the prior art.
A kind of novel cavity filter that the utility model provides, comprises cavity and cover plate, and cavity described in described cover plate capping forms resonant cavity; Described cover plate is provided with the installing hole that through-thickness runs through, and is provided with that one end is fixed in described installing hole, resonant rod that the other end stretches out to the bottom of described cavity in described resonant cavity; Described resonant rod is fixed in the installing hole of described cover plate by welding, riveted joint or thread connecting mode.
Preferably, described resonant rod is tubular, there is the tuned window run through vertically, described tuned window is stepped, comprise the first tuned window near described cover plate side and the second tune hole near described cavity side, be provided with tuning screw in described tuned window, one end of described tuning screw is threaded with described first tuned window, the other end of described tuning screw and the hole wall capacitive coupling in described second tune hole.
Preferably, one end that described tuning screw stretches out described cover plate is arranged with tuning nut, is provided with pad between described tuning nut and described cover plate.
Preferably, the outer wall of described resonant rod is stepped vertically, and comprise the connecting portion stretched in described installing hole and the operate portions being positioned at described resonant cavity, the external diameter of connecting portion is less than the external diameter of described operate portions.
Preferably, the installing hole of described cover plate is polygon-shaped, and the shape of the shape of the connecting portion of described resonant rod and the installing hole of described cover plate is suitable.
Preferably, described cover plate is screwed on described cavity, or described cover plate is fixed on described cavity by welding manner.
Relative to prior art, a kind of novel cavity filter that the utility model provides, resonant rod is fixed in the installing hole of cover plate by welding, riveted joint or thread connecting mode, not only eliminate a screw, and the connection of resonant rod and cover plate is also more firm.
Accompanying drawing explanation
In order to the technical scheme in clearer explanation the utility model embodiment, below the accompanying drawing used required in describing embodiment is briefly described, apparent, accompanying drawing in the following describes is only embodiments more of the present utility model, 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 the stereogram of novel cavity filter.
Fig. 2 is the explosive view of novel cavity filter.
Below the parts title in above-mentioned accompanying drawing corresponding to Reference numeral: cavity 10, cover plate 20, installing hole 21, resonant rod 30, tuned window 31, connecting portion 32, operate portions 33, tuning screw 40, tuning nut 50, pad 60.
Embodiment
As illustrated in fig. 1 and 2, a kind of novel cavity filter that the present embodiment provides, comprises cavity 10 and cover plate 20, and cover plate 20 capping cavity 10 forms resonant cavity; Cover plate 20 is provided with the installing hole 21 that through-thickness runs through, and is provided with one end and is fixed on resonant rod 30 in installing hole 21 in resonant cavity; Resonant rod 30 is fixed in the installing hole 21 of cover plate 20 by welding manner, riveting method or thread connecting mode.After being fixed on cover plate 20 by the connecting portion 32 of resonant rod 30, generally also can carry out electroplating processes to it, to improve the Insertion Loss index of novel cavity filter.
Resonant rod 30 is in tubular, there is the tuned window 31 run through vertically, tuned window 31 is stepped, comprise the first tuned window near cover plate 20 side and the second tune hole near cavity 10 side, tuning screw 40 is provided with in tuned window 31, one end of tuning screw 40 is threaded with the first tuned window, the other end of tuning screw 40 and the hole wall capacitive coupling in second tune hole.
One end that tuning screw 40 stretches out cover plate 20 is arranged with tuning nut 50, is provided with pad 60 between tuning nut 50 and cover plate 20.Namely tuning screw 40 is threaded with tuning nut 50 and resonant rod 30 simultaneously, and form two self-locking structure, like this after tuning screw 40 is locked, resonant rod 30 is not easy loose or dislocation.
The outer wall of resonant rod 30 is stepped vertically, and comprise the connecting portion 32 stretched in installing hole 21 and the operate portions 33 being positioned at resonant cavity, the external diameter of connecting portion 32 is less than the external diameter of described operate portions 33.In order to prevent resonant rod 30 from installing hole 21, axial rotation occurring, the installing hole of cover plate 20 21 is in polygon-shaped, and such as hexagon shape, the shape of the installing hole 21 on the shape of the connecting portion 32 of resonant rod 30 and cover plate 20 is suitable.
Cover plate 20 is generally screwed on cavity 10, and certain 20 can also be fixed on cavity 10 by alternate manner, such as laser welding.
Relative to prior art, a kind of novel cavity filter that the present embodiment provides, resonant rod is fixed in the installing hole of cover plate by welding manner, riveting method or thread connecting mode, not only eliminate a screw, and the connection of resonant rod and cover plate is also more firm.
Applying specific case herein to set forth principle of the present utility model and execution mode, just understanding method of the present utility model and core concept thereof for helping; Meanwhile, for one of ordinary skill in the art, according to thought of the present utility model, all will change in specific embodiments and applications, in sum, this description should not be construed as restriction of the present utility model.
Claims (6)
1. a novel cavity filter, is characterized in that, comprises cavity (10) and cover plate (20), and cavity (10) described in described cover plate (20) capping forms resonant cavity; Described cover plate (20) is provided with the installing hole (21) that through-thickness runs through, and is provided with the resonant rod (30) that one end is fixed in described installing hole (21), the other end stretches out to cavity (10) bottom in described resonant cavity; Described resonant rod (30) is fixed in the installing hole (21) of described cover plate (20) by welding, riveted joint or thread connecting mode.
2. a kind of novel cavity filter according to claim 1, it is characterized in that, described resonant rod (30) is in tubular, there is the tuned window (31) run through vertically, described tuned window (31) is stepped, comprise the first tuned window near described cover plate (20) side and the second tune hole near described cavity (10) side, tuning screw (40) is provided with in described tuned window (31), one end of described tuning screw (40) is threaded with described first tuned window, the other end of described tuning screw (40) and the hole wall capacitive coupling in described second tune hole.
3. a kind of novel cavity filter according to claim 2, it is characterized in that, one end that described tuning screw (40) stretches out described cover plate (20) is arranged with tuning nut (50), is provided with pad (60) between described tuning nut (50) and described cover plate (20).
4. a kind of novel cavity filter according to claim 1, it is characterized in that, the outer wall of described resonant rod (30) is stepped vertically, comprise the connecting portion (32) stretched in described installing hole (21) and the operate portions (33) being positioned at described resonant cavity, the external diameter of described connecting portion (32) is less than the external diameter of described operate portions (33).
5. a kind of novel cavity filter according to claim 4, it is characterized in that, the installing hole (21) of described cover plate (20) is in polygon-shaped, and the shape of the shape of the connecting portion (32) of described resonant rod (30) and the installing hole (21) of described cover plate (20) is suitable.
6. a kind of novel cavity filter according to claim 1, is characterized in that, described cover plate (20) is screwed on described cavity (10), or described cover plate (20) welding manner is fixed on described cavity (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520590642.1U CN204966642U (en) | 2015-08-07 | 2015-08-07 | Novel cavity filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520590642.1U CN204966642U (en) | 2015-08-07 | 2015-08-07 | Novel cavity filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204966642U true CN204966642U (en) | 2016-01-13 |
Family
ID=55061684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520590642.1U Expired - Fee Related CN204966642U (en) | 2015-08-07 | 2015-08-07 | Novel cavity filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204966642U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106654478A (en) * | 2016-12-14 | 2017-05-10 | 迈特通信设备（苏州）有限公司 | High Q-value tunable E-plane filter |
-
2015
- 2015-08-07 CN CN201520590642.1U patent/CN204966642U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106654478A (en) * | 2016-12-14 | 2017-05-10 | 迈特通信设备（苏州）有限公司 | High Q-value tunable E-plane filter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160113 Termination date: 20200807 |