CN204558628U - Cavity filter - Google Patents
Cavity filter Download PDFInfo
- Publication number
- CN204558628U CN204558628U CN201520117102.1U CN201520117102U CN204558628U CN 204558628 U CN204558628 U CN 204558628U CN 201520117102 U CN201520117102 U CN 201520117102U CN 204558628 U CN204558628 U CN 204558628U
- Authority
- CN
- China
- Prior art keywords
- cavity
- cover board
- flanging bore
- filter cover
- filter
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a kind of cavity filter, comprise open-topped cavity, resonatron, filter cover board and tuning screw, the open top of filter cover board seal chamber, resonatron to be arranged in cavity and to be fixed on the diapire of cavity, filter cover board is provided with the flanging bore corresponding with resonatron position, the sidewall that flanging bore comprises the through hole that runs through filter cover board and convexed to form to the outside of filter cover board by through hole, the madial wall of flanging bore is provided with screw thread, described tuning screw is threadedly connected to described flanging bore and makes described tuning screw be fixedly connected on described filter cover board.Compared with prior art, the utility model filter cover board arranges flanging bore, nut of the prior art and screwed hole is replaced by flanging bore, thus in production process or when regulating resonance frequency, without the need to a manual manipulation spanner with hold-down nut, and only need operate tuning screw, be more suitable for automated production and tuner operation is simple and convenient.
Description
Technical field
The utility model relates to wave filter technology field, relates to a kind of cavity filter more specifically.
Background technology
Cavity filter is one of assembly common in mobile communication system, and cavity filter generally includes cover plate and cavity, is provided with one or more resonatron in cavity, and described resonatron is screwed on the pedestal in cavity.Please refer to Fig. 1 to Fig. 2, Fig. 1 is the structural representation of prior art cover plate, and Fig. 2 is the structure chart after cover plate and tuning screw are installed.As shown in Figure 1, cover plate 10 ' is provided with the screwed hole 102 ' installing tuning screw 12 ', and cover plate 10 ' can be locked on filter cavity by trip bolt, and tuning screw 12 ' is installed on cover plate 10 ' by screwed hole 102 ', be fixed on cover plate 10 ' to make tuning screw 12 ', usually cover plate 10 ' is needed to have certain thickness, thus the ridge number be coupled between tuning screw 12 ' with cover plate 10 ' is more, and when the thickness of cover plate 10 ' is less, be stable on cover plate 10 ' to make tuning screw 12 ', can also at the outside mounting nuts 14 ' of cover plate 10 ', by nut 14 ', tuning screw 12 ' is locked further, schematic diagram after its installation as shown in Figure 2.
But, the cavity filter of tuning screw is fixed when producing or regulating resonance frequency by nut, operating personnel need one to hold spanner with hold-down nut, another manual manipulation screwdriver is threaded with nut and screwed hole to be rotated by tuning screw or changes the degree of depth that tuning screw enters cavity, need spanner and screwdriver to coordinate in the production process of i.e. cavity filter simultaneously, be unsuitable for automated production, and when regulating resonance frequency, staff needs two manual manipulations, inconvenient operation.
Utility model content
The purpose of this utility model is to provide a kind of cavity filter, to save nut when fixing tuning screw, and then is applicable to automated production process, and simplifies the operation in tuning process.
For achieving the above object, the utility model provides a kind of cavity filter, comprise open-topped cavity, resonatron, filter cover board and tuning screw, described filter cover board seals the open top of described cavity, described resonatron to be arranged in described cavity and to be fixed on the diapire of described cavity, described filter cover board is provided with the flanging bore corresponding with described resonatron position, the sidewall that described flanging bore comprises the through hole that runs through described filter cover board and convexed to form to the outside of described filter cover board by described through hole, the madial wall of described flanging bore is provided with screw thread, described tuning screw is threadedly connected to described flanging bore and makes described tuning screw be fixedly connected on described filter cover board.
Compared with prior art, the filter cover board of the utility model cavity filter arranges flanging bore, nut of the prior art and screwed hole is replaced by flanging bore, thus in production process or when regulating resonance frequency, without the need to a manual manipulation spanner with hold-down nut, and only need operate tuning screw, be more suitable for automated production, and tuner operation is simple, convenient.
Preferably, described filter cover board is also provided with the screwed hole for being fixedly connected with described cavity.
Preferably, the screw glue preventing described tuning screw from loosening also is bonded with between the surface of described tuning screw and described filter cover board.
Preferably, described flanging bore is shaping by flange Sheet Metal Forming Technology.
Preferably, described resonatron and described flanging bore have multiple.
Preferably, described cavity filter also comprises fixture, flanging bore described in described clamp with make described flanging bore and described tuning screw fastening, described fixture and described flanging bore are Multi-contact.
Preferably, described fixture comprises the contact-making surface that two forwards are oppositely arranged, contact-making surface described in two near time form an orthohexagonal clamping region.
By following description also by reference to the accompanying drawings, the utility model will become more clear, and these accompanying drawings are for explaining embodiment of the present utility model.
Accompanying drawing explanation
Fig. 1 is the structural representation of prior art median filter cover plate.
Fig. 2 is the structural representation after Fig. 1 median filter cover plate and tuning bolt are installed.
Fig. 3 is the profile of the utility model cavity filter one embodiment.
Fig. 4 is the structure chart of the utility model cavity filter median filter cover plate one embodiment.
Fig. 5 is the structural representation after the utility model filter cover board is connected with tuning screw.
Fig. 6 a is structural representation when fixture and flanging bore clamp in prior art.
Fig. 6 b is structural representation when fixture coordinates with flanging bore in the utility model cavity filter.
Embodiment
With reference now to accompanying drawing, describe embodiment of the present utility model, element numbers similar in accompanying drawing represents similar element.
Please refer to Fig. 3 to Fig. 5, the utility model provides a kind of cavity filter 100, it comprises open-topped cavity 10, resonatron 12, filter cover board 14 and tuning screw 16, the open top of filter cover board 14 seal chamber 10, resonatron 12 to be arranged in cavity 10 and to be fixed on the diapire of cavity 10, filter cover board 14 is provided with the flanging bore 141 corresponding with resonatron 12 position, the sidewall that flanging bore 141 comprises the through hole that runs through filter cover board 14 and convexed to form to the outside of filter cover board 14 by through hole, the madial wall of flanging bore 141 is provided with screw thread, tuning screw 16 is threadedly connected to flanging bore 141 and makes tuning screw 16 be fixedly connected on filter cover board 14.
Compared with prior art, the filter cover board 14 of the utility model cavity filter 100 adopt flanging bore 141 to replace nut of the prior art and screwed hole, thus in production process or when regulating resonance frequency, without the need to a manual manipulation spanner with hold-down nut, and only need operate tuning screw 16, more be suitable for automated production, and tuner operation is simple, convenient.
It should be noted that, the utility model cavity filter 100 in use, needs by clamp flanging bore 141 after regulating resonance frequency, is fastenedly connected to make tuning screw 16 and flanging bore 141.Current, conventional fixture 20 ' (as pliers) is generally two contact planes with the contact site of workpiece to be operated, workpiece to be operated is clamped by two contact planes, but, above-mentioned fixture 20 ' is when clamping flanging bore 141, and fixture 20 ' is two points (as shown in Figure 6 a) with the contact area of flanging bore 141, thus after clamping, the easy distortion of flanging bore 141 has two concave points, make flanging bore 141 uneven with the contact of adjusting screw(rod) 16, fixed effect is bad.In order to solve the problem, the utility model cavity filter 100 also comprises fixture 18, and fixture 18 clamps flanging bore 141 to make flanging bore 141 and tuning screw 16 fastening, and wherein fixture 18 and flanging bore 141 are in Multi-contact.Preferably, as shown in Figure 6 b, fixture 18 has the contact-making surface that two forwards are oppositely arranged, two contact-making surfaces near time form the clamping region of a regular polygon (as regular hexagon), during chucking operation 18, the exterior surface of two contact-making surfaces and flanging bore 141 also applies force to flanging bore 141, and make flanging bore 141 stressed relatively more even, fastening effect is better.
Preferably, as shown in Figure 5, filter cover board 14 is also provided with screwed hole 143, and on cavity 10, corresponding position arranges corresponding threaded joints, screw thread is connected to screwed hole and threaded joints and filter cover board 14 is fixedly connected with cavity 10.In addition, in order to fix tuning screw 16 further, being also provided with screw glue at tuning screw 16 and the surface of filter cover board 14, screw glue as green in TB1401B, can preventing tuning screw 16 from loosening by screw glue.Particularly, flanging bore 141 is shaping by flange Sheet Metal Forming Technology, owing to there is multiple flanging bore manufacturing process at present, so place no longer describes the manufacture process of flanging bore in detail.
Preferably, in cavity 10, multiple resonatron 12 can be set, corresponding, filter cover board 14 is provided with multiple flanging bore 141, wherein each flanging bore 141 is corresponding with the resonatron 12 of corresponding position.
More than in conjunction with most preferred embodiment, the utility model is described, but the utility model is not limited to the embodiment of above announcement, and should contain various carry out according to essence of the present utility model amendment, equivalent combinations.
Claims (7)
1. a cavity filter, comprise open-topped cavity, resonatron, filter cover board and tuning screw, described filter cover board seals the open top of described cavity, described resonatron to be arranged in described cavity and to be fixed on the diapire of described cavity, it is characterized in that, described filter cover board is provided with the flanging bore corresponding with described resonatron position, the sidewall that described flanging bore comprises the through hole that runs through described filter cover board and convexed to form to the outside of described filter cover board by described through hole, the madial wall of described flanging bore is provided with screw thread, described tuning screw is threadedly connected to described flanging bore and makes described tuning screw be fixedly connected on described filter cover board.
2. cavity filter as claimed in claim 1, is characterized in that, described filter cover board being also provided with the screwed hole for being fixedly connected with described cavity.
3. cavity filter as claimed in claim 1, is characterized in that, is also bonded with the screw glue preventing described tuning screw from loosening between the surface of described tuning screw and described filter cover board.
4. cavity filter as claimed in claim 1, its feature is being, described flanging bore is shaping by flange Sheet Metal Forming Technology.
5. cavity filter as claimed in claim 1, it is characterized in that, described resonatron and described flanging bore have multiple.
6. the cavity filter as described in any one of claim 1 to 5, is characterized in that, also comprises fixture, flanging bore described in described clamp with make described flanging bore and described tuning screw fastening, described fixture and described flanging bore are Multi-contact.
7. cavity filter as claimed in claim 6, it is characterized in that, described fixture comprises the contact-making surface that two forwards are oppositely arranged, contact-making surface described in two near time form an orthohexagonal clamping region.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520117102.1U CN204558628U (en) | 2015-02-26 | 2015-02-26 | Cavity filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520117102.1U CN204558628U (en) | 2015-02-26 | 2015-02-26 | Cavity filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204558628U true CN204558628U (en) | 2015-08-12 |
Family
ID=53833707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520117102.1U Expired - Fee Related CN204558628U (en) | 2015-02-26 | 2015-02-26 | Cavity filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204558628U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104681906A (en) * | 2015-02-26 | 2015-06-03 | 东莞鸿爱斯通信科技有限公司 | Cavity filter |
-
2015
- 2015-02-26 CN CN201520117102.1U patent/CN204558628U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104681906A (en) * | 2015-02-26 | 2015-06-03 | 东莞鸿爱斯通信科技有限公司 | Cavity 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 |
Granted publication date: 20150812 Termination date: 20210226 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |