CN201749919U - Cavity filter - Google Patents
Cavity filter Download PDFInfo
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- CN201749919U CN201749919U CN2010202996508U CN201020299650U CN201749919U CN 201749919 U CN201749919 U CN 201749919U CN 2010202996508 U CN2010202996508 U CN 2010202996508U CN 201020299650 U CN201020299650 U CN 201020299650U CN 201749919 U CN201749919 U CN 201749919U
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- cover plate
- resonatron
- cavity body
- body filter
- cavity
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Abstract
The utility model discloses a cavity filter. The embodiment of the utility model provides a cavity filter, which comprises a cavity and a cover plate, wherein a resonatron is integrally molded with the cover plate, so that the resonatron is seamlessly connected with the cover plate. Compared with the processing and assembly method for the conventional resonatron, the material cost and the processing cost are both greatly reduced, the working procedure of the resonatron assembled on the bottom surface of the cavity is omitted, the assembly is simple and convenient, and the cost of the filter is reduced.
Description
Technical field
The utility model relates to the wave filter technology field, is specifically related to cavity body filter.
Background technology
Cavity body filter is widely used in the communications field as a kind of frequency selection device, especially field of radio frequency communication.In the base station, filter is used to select signal of communication, clutter or interference signal that the filtering communication signal frequency is outer.
Cavity body filter generally comprises three classes, and the first kind is a coaxial cavity filter, and second class is a dielectric filter, and the 3rd class is a waveguide filter.For coaxial cavity filter, generally comprise: cavity, cover plate and be housed in metal resonatron in the cavity.
A kind of generalized section of cavity body filter is utilized the mode of turning processing to make resonatron 101 usually, and then with screw 103 resonatron 101 is fixed on the cavity bottom surface 102 as shown in Figure 1 in the prior art, refills at last and joins cover plate 104.
In research and practice process to prior art, inventor of the present utility model finds, in the prior art, because cover plate and resonatron are independent processing, and the later stage assembling, the possible loose contact of resonatron and cavity, and because the restriction of resonatron processing mode, cost compares higher.
The utility model content
The cavity body filter that the utility model embodiment provides can reduce the production cost of filter.
The cavity body filter that the utility model embodiment provides comprises cavity and cover plate, and described cover plate is provided with resonatron, and described resonatron and described cover plate are one-body molded.
Among the utility model embodiment, resonatron and cover plate are one-body molded, make resonatron and cover plate seamless link, avoided the problem of resonatron and filter cavity loose contact, and resonatron and cover plate adopt same sheet material to make, with respect to the processing and the fit of existing resonatron, material cost and processing cost have been reduced significantly, saved resonatron has been assemblied in operation on the cavity bottom surface, assembled easyly, reduced the cost of filter.
Description of drawings
In order to be illustrated more clearly in the technical scheme among the utility model embodiment, the accompanying drawing of required use is done to introduce simply in will describing embodiment below, apparently, accompanying drawing in describing below only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the generalized section of a kind of cavity body filter in the prior art;
Fig. 2 (a) is the partial structurtes schematic diagram of cavity filter cover board among the utility model embodiment one;
Fig. 2 (b) is the partial cutaway schematic of cavity body filter among the utility model embodiment one;
Fig. 3 (a) is the partial structurtes schematic diagram of cavity filter cover board among the utility model embodiment two;
Fig. 3 (b) is the partial cutaway schematic of cavity body filter among the utility model embodiment two;
Fig. 3 (c) is the partial structurtes schematic diagram of a kind of cavity filter cover board among the utility model embodiment two;
Fig. 3 (d) is the partial structurtes schematic diagram of another kind of cavity filter cover board among the utility model embodiment two.
Embodiment
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
Embodiment one, a kind of cavity body filter, comprise cavity and cover plate, the structure of cover plate schematic diagram is shown in Fig. 2 (a), and the generalized section of cavity body filter is shown in Fig. 2 (b), cover plate 201 is provided with resonatron 202, and described resonatron 202 and described cover plate 201 are one-body molded.
The integrated implementation of resonatron and cover plate can have multiple, and for example, resonatron can form with the cover plate integral die-cast, and resonatron also can carry out punching press to cover plate and form.
In the present embodiment, the shape of resonatron can have multiple, as cylindrical, conical, rectangle etc.
Among the utility model embodiment, resonatron and cover plate are one-body molded, make resonatron and cover plate seamless link, processing and fit with respect to existing resonatron, material cost and processing cost have been reduced significantly, saved resonatron has been assemblied in operation on the cavity bottom surface, assembled easyly, reduced the cost of filter.
Embodiment two, a kind of cavity body filter, comprise cavity and cover plate, the structural representation of cavity filter cover board is with reference to figure 3 (a), and the generalized section of cavity body filter is with reference to figure 3 (b), described cover plate 301 is provided with resonatron 302, and described resonatron and described cover plate are one-body molded.
Among the utility model embodiment, can be provided with a plurality of projections 303 that are used to improve cover plate intensity on the cover plate 301, described a plurality of projection can have multiple distribution mode, for example, can be that the center radially distributes on cover plate with described resonatron 302, its partial structurtes schematic diagram such as Fig. 3 (c) also can be circular-arc and be distributed in around the described resonatron, its partial structurtes schematic diagram such as Fig. 3 (d).The cross section of described projection can be circular arc, trapezoidal, rectangle or semicircle, and concrete shape and structure do not constitute restriction of the present utility model.The implementation of described projection can have multiple, and for example, the mode that adopts punching press is from the surface direction punching press that makes progress of cover plate lower surface, thereby on the cover board forms projection.
By projection on the cover board is set, can improve the intensity of cover plate, play the effect of reinforcement, make the anti-deformation of cover plate improve, avoid the influence of cover plate distortion to the cavity body filter index.
Among the utility model embodiment, cavity body filter also comprises tuning screw 310, cavity bottom surface 304 is provided with along the screwed hole of resonatron 302 axis directions, described tuning screw 310 runs through described screwed hole assembling, regulates the radio frequency parameter of cavity body filter by the relative position of regulating tuning screw 310 and resonatron 302.
By tuning screw is set, can regulate the relative position of tuning screw 310 and resonatron 302, for example, by precession or back-out tuning screw 310, make distance between tuning screw and the resonatron bottom surface diminish or become big, thereby make the resonance frequency of cavity body filter that certain variation take place.
Tuning screw comprises tuning dish 311 and screw rod 312, described tuning dish 311 is positioned at inside cavity, described screw rod 312 is positioned at the cavity outside away from the end 313 of tuning dish 311, screw rod end 313 is provided with " one " word groove shaped closing in structure, " one " word groove shaped closing in structure also can be set on the tuning dish 311, so that cooperate the straight screwdriver application of force, thereby assemble tuning screw easily, can or screw out tuning screw by precession simultaneously, reach the purpose of regulating distance between tuning dish and the resonatron bottom surface.Certainly, the closing in structure is not limited to this, and those skilled in the art expect other closing in structures commonly used in the prior art easily, for example " ten " word groove, interior six flower grooves, interior hexagonal groove or other protruding polygons or depression polygon etc.Certainly, can adopt two ends tuning screw rod of the same size yet, perhaps adopt the adjusting screw(rod) of cup head, the shape of concrete tuning screw does not constitute restriction of the present utility model.Have the tuning screw of tuning dish by employing, make that the distance between tuning dish and the resonatron bottom surface changes, so that regulate the resonance frequency of filter.
In the present embodiment, cavity body filter can also include nut 314 and the pad 315 that matches with tuning screw 310, thereby makes tuning screw and cavity reliably lock.
In the present embodiment, the sheet material that is used as cavity filter cover board can have multiple, and for example, the material of described sheet material can be in copper or steel or the alloy aluminum one or more.For example, the material of described sheet material can be SPCE (Steel Plate Cold Elongation), i.e. deep-draw cold-rolled steel sheet, this material is suitable for deep-draw stretching purposes, and its deep drawability is better, certainly, also can adopt the steel plate of other types, perhaps adopt copper coin, alloy aluminium sheet.
The thickness of cavity filter cover board can be set to 0.3～5.0cm, for the cover plate that adopts the integral die-cast mode to form resonatron and cover plate, its thickness can be chosen for 1.5～5.0cm, and for example 1.5cm, 2.0cm, 4.0cm, 5.0cm are so that satisfy the requirement of die casting to cover sheet thickness; For adopting the mode that thereby the cover plate punching press is formed resonatron, the thickness of cover plate can be chosen for 0.3～2.0cm, for example 0.3cm, 0.5cm, 1.5cm, 2.0cm, choose the thickness of sheet material moderate, for example, choose the sheet material of different-thickness according to the difference of the processing mode of resonatron and make cover plate, can avoid because of the too thick cost that causes of sheet material higher, and problems such as can avoiding yielding, cooperate with cavity closely, evenness is not high, and resonatron is yielding, tear because of the too thin cover plate that causes of sheet material.The thickness and the choosing of material that are appreciated that concrete sheet material do not constitute restriction of the present utility model.
Among the utility model embodiment two, the resonatron and the cover plate of cavity body filter are one-body molded, make resonatron and cover plate seamless link, avoided the problem of resonatron and filter cavity loose contact, and resonatron and cover plate adopt same sheet material to make, with respect to the processing and the fit of existing resonatron, material cost and processing cost have been reduced significantly, saved resonatron has been assemblied in operation on the cavity bottom surface, assembled easyly, reduced the cost of filter.
More than cavity body filter that the utility model embodiment is provided be described in detail, used specific case herein principle of the present utility model and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present utility model and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present utility model, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as restriction of the present utility model.
Claims (10)
1. a cavity body filter comprises cavity and cover plate, it is characterized in that, described cover plate is provided with resonatron, and described resonatron and described cover plate are one-body molded.
2. cavity body filter as claimed in claim 1 is characterized in that, described resonatron is to form with described cover plate integral die-cast.
3. cavity body filter as claimed in claim 2 is characterized in that, described cover sheet thickness is 1.5～5.0cm.
4. cavity body filter as claimed in claim 1 is characterized in that, described resonatron forms described cover plate punching press.
5. cavity body filter as claimed in claim 4 is characterized in that, described cover sheet thickness is 0.3～2.0cm.
6. cavity body filter as claimed in claim 1 is characterized in that, described cover plate is provided with a plurality of projections that are used to improve cover plate intensity.
7. as any described cavity body filter of claim 1 to 6, it is characterized in that, described cavity body filter also comprises tuning screw, described cavity bottom surface is provided with along the screwed hole of described resonatron axis direction, described tuning screw runs through described screwed hole assembling, regulates the radio frequency parameter of described cavity body filter by the relative position of regulating described tuning screw and described resonatron.
8. cavity body filter as claimed in claim 7, it is characterized in that, described tuning screw comprises tuning dish and screw rod, described tuning dish is positioned at inside cavity, described screw rod is provided with the closing in structure that cooperation screws the instrument application of force away from the end of tuning dish, and described closing in structure is " one " word groove, " ten " word groove, protruding polygon or depression polygon.
9. as any described cavity body filter of claim 1 to 6, it is characterized in that the material of described cover plate is copper or steel or alloy aluminum.
10. cavity body filter as claimed in claim 9 is characterized in that, the material of described cover plate is the deep-draw cold-rolled steel sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202996508U CN201749919U (en) | 2010-08-20 | 2010-08-20 | Cavity filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202996508U CN201749919U (en) | 2010-08-20 | 2010-08-20 | Cavity filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201749919U true CN201749919U (en) | 2011-02-16 |
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ID=43584591
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202996508U Expired - Lifetime CN201749919U (en) | 2010-08-20 | 2010-08-20 | Cavity filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201749919U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102222811A (en) * | 2011-03-28 | 2011-10-19 | 聚信科技有限公司 | Filter |
| WO2012022201A1 (en) * | 2010-08-20 | 2012-02-23 | 深圳市大富科技股份有限公司 | Cavity filter and method for manufacturing cavity filter |
| CN111193084A (en) * | 2020-01-07 | 2020-05-22 | 朱承风 | Filter cover plate |
-
2010
- 2010-08-20 CN CN2010202996508U patent/CN201749919U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012022201A1 (en) * | 2010-08-20 | 2012-02-23 | 深圳市大富科技股份有限公司 | Cavity filter and method for manufacturing cavity filter |
| CN102222811A (en) * | 2011-03-28 | 2011-10-19 | 聚信科技有限公司 | Filter |
| CN111193084A (en) * | 2020-01-07 | 2020-05-22 | 朱承风 | Filter cover plate |
| CN111193084B (en) * | 2020-01-07 | 2021-07-20 | 南京华脉科技股份有限公司 | Filter cover plate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: 518104, Guangdong, Shenzhen province Baoan District manhole Street oyster road manhole Industrial Company Third Industrial Zone A1, A2, A3 101 and 2 layers, A4 Patentee after: Shenzhen Tat Fook Technology Co., Ltd. Address before: 518108 Bao'an District, Shenzhen City, Guangdong Province, Shiyan Town, love group with the rich industrial area A \ B Dong Patentee before: Shenzhen Tat Fook Technology Co., Ltd. |
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| CX01 | Expiry of patent term |
Granted publication date: 20110216 |
|
| CX01 | Expiry of patent term |