CN104681906A - Cavity filter - Google Patents
Cavity filter Download PDFInfo
- Publication number
- CN104681906A CN104681906A CN201510088689.2A CN201510088689A CN104681906A CN 104681906 A CN104681906 A CN 104681906A CN 201510088689 A CN201510088689 A CN 201510088689A CN 104681906 A CN104681906 A CN 104681906A
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- CN
- China
- Prior art keywords
- cavity
- filter
- filter cover
- flanging bore
- cover board
- 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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- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
The invention discloses a cavity filter which comprises a cavity with an opening in the top, a resonance tube, a filter cover plate and a tuning screw rod, wherein the filter cover plate is used for sealing the opening in the top of the cavity; the resonance tube is arranged in the cavity and fixed on the bottom wall of the cavity; a flanging hole corresponding to the position of the resonance tube is formed in the filter cover plate and comprises a through hole and a side wall, wherein the through hole penetrates through the filter cover plate; a side wall is formed by projecting towards the outer side of the filter cover plate from the position of the through hole; threads are formed in the inner side wall of the flanging hole; the tuning screw rod is in threaded connection with the flanging hole to be fixedly connected with the filter cover plate. Compared with the prior art, the cavity filter has the benefits that as the flanging hole is formed in the filter cover plate, a nut and a threaded hole in the prior art are replaced by the flanging hole, so that in the production process or when the resonance frequency is adjusted, the nut can be fixed without operating a wrench with one hand, and only the tuning screw rod is required to be operated; the cavity filter is more suitable for automatic production and is simple and convenient in tuning operation.
Description
Technical field
The present invention relates to wave filter technology field, relate 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.
Summary of the invention
The object of the present invention is to provide a kind of cavity filter, to save nut when fixing tuning screw, and then be applicable to automated production process, and simplify the operation in tuning process.
For achieving the above object, the invention 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 cavity filter of the present invention 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 present invention will become more clear, and these accompanying drawings are for explaining embodiments of the invention.
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 cavity filter one embodiment of the present invention.
Fig. 4 is the structure chart of cavity filter median filter cover plate one embodiment of the present invention.
Fig. 5 is the structural representation after filter cover board of the present invention 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 cavity filter of the present invention.
Embodiment
With reference now to accompanying drawing, describe embodiments of the invention, element numbers similar in accompanying drawing represents similar element.
Please refer to Fig. 3 to Fig. 5, the invention 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 cavity filter 100 of the present invention 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, cavity filter 100 of the present invention 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, cavity filter 100 of the present invention 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, invention has been described, but the present invention is not limited to the embodiment of above announcement, and should contain various carry out according to essence of the present invention 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 or 2, 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 |
|---|---|---|---|
| CN201510088689.2A CN104681906A (en) | 2015-02-26 | 2015-02-26 | Cavity filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510088689.2A CN104681906A (en) | 2015-02-26 | 2015-02-26 | Cavity filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104681906A true CN104681906A (en) | 2015-06-03 |
Family
ID=53316674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510088689.2A Pending CN104681906A (en) | 2015-02-26 | 2015-02-26 | Cavity filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104681906A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1325333A (en) * | 1998-09-15 | 2001-12-05 | 斯瓦戈洛克公司 | Tube clamping assembly |
| CN101920503A (en) * | 2010-05-07 | 2010-12-22 | 深圳市大富科技股份有限公司 | Method for punching cavity filter cover board, cavity filter cover board and cavity filter |
| CN201758169U (en) * | 2010-05-07 | 2011-03-09 | 深圳市大富科技股份有限公司 | Cavity filter cover board and cavity filter |
| CN202888363U (en) * | 2012-09-29 | 2013-04-17 | 四川奥格科技有限公司 | Cavity filter capable of improving temperature drift |
| CN203119067U (en) * | 2013-01-25 | 2013-08-07 | 华为技术有限公司 | Cavity filter |
| CN103715484A (en) * | 2012-09-29 | 2014-04-09 | 四川奥格科技有限公司 | Cavity filter improving temperature drift |
| CN203680168U (en) * | 2014-01-14 | 2014-07-02 | 绍兴恒力工具有限公司 | Metric-inch adjustable wrench |
| CN203747000U (en) * | 2014-02-28 | 2014-07-30 | 迈特通信设备（苏州）有限公司 | Cavity filter cover plate |
| CN203835294U (en) * | 2014-02-27 | 2014-09-17 | 武汉三江航天远方科技有限公司 | Chuck of oil well measuring instrument used for well-descending |
| CN204558628U (en) * | 2015-02-26 | 2015-08-12 | 东莞鸿爱斯通信科技有限公司 | Cavity filter |
-
2015
- 2015-02-26 CN CN201510088689.2A patent/CN104681906A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1325333A (en) * | 1998-09-15 | 2001-12-05 | 斯瓦戈洛克公司 | Tube clamping assembly |
| CN101920503A (en) * | 2010-05-07 | 2010-12-22 | 深圳市大富科技股份有限公司 | Method for punching cavity filter cover board, cavity filter cover board and cavity filter |
| CN201758169U (en) * | 2010-05-07 | 2011-03-09 | 深圳市大富科技股份有限公司 | Cavity filter cover board and cavity filter |
| CN202888363U (en) * | 2012-09-29 | 2013-04-17 | 四川奥格科技有限公司 | Cavity filter capable of improving temperature drift |
| CN103715484A (en) * | 2012-09-29 | 2014-04-09 | 四川奥格科技有限公司 | Cavity filter improving temperature drift |
| CN203119067U (en) * | 2013-01-25 | 2013-08-07 | 华为技术有限公司 | Cavity filter |
| CN203680168U (en) * | 2014-01-14 | 2014-07-02 | 绍兴恒力工具有限公司 | Metric-inch adjustable wrench |
| CN203835294U (en) * | 2014-02-27 | 2014-09-17 | 武汉三江航天远方科技有限公司 | Chuck of oil well measuring instrument used for well-descending |
| CN203747000U (en) * | 2014-02-28 | 2014-07-30 | 迈特通信设备（苏州）有限公司 | Cavity filter cover plate |
| CN204558628U (en) * | 2015-02-26 | 2015-08-12 | 东莞鸿爱斯通信科技有限公司 | Cavity filter |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150603 |
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| RJ01 | Rejection of invention patent application after publication |