CN201608263U - Cavity filter and cavity filter cover plate - Google Patents
Cavity filter and cavity filter cover plate Download PDFInfo
- Publication number
- CN201608263U CN201608263U CN2010201290738U CN201020129073U CN201608263U CN 201608263 U CN201608263 U CN 201608263U CN 2010201290738 U CN2010201290738 U CN 2010201290738U CN 201020129073 U CN201020129073 U CN 201020129073U CN 201608263 U CN201608263 U CN 201608263U
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- cover plate
- outer conductor
- inner wire
- described connector
- accepting hole
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Abstract
The utility model discloses a cavity filter and a cavity filter cover plate. In an embodiment of the utility model, an outer conductor of a connector is fixed onto the cavity filter cover plate via a hard connection form, thereby saving space of the cover plate greatly while reducing manufacturing cost of the outer conductor of the connector and saving material usage.
Description
Technical field
The utility model relates to the wave filter technology field, is specifically related to a kind of cavity body filter.
Background technology
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.
At present, in mobile communication system, generally use cavity body filter to come that antenna emission and the signal that receives are carried out frequency and select.Cavity body filter generally includes cavity and resonatron, and the chamber is risen and is provided with a plurality of cavitys, contains a resonatron in each cavity.In the cavity body filter large-scale production, need to use large batch of resonatron.
Cavity body filter of the prior art, input/output structure, usually be that connector with input and output is fixed on the cavity filter cover board, fixed form commonly used is referring to shown in Figure 1, connector outer conductor 100 is processed into the structure of flanged dish 120, cooperates by the screw on screw 130 and the cover plate connector outer conductor is fixed on the cover plate.
In the research and practice process to prior art, inventor of the present utility model finds, the hard outer conductor that connects needs to be processed into flanged (FLGD) structure on the filter, waste material, the while processed complex, cost of manufacture is higher, simultaneously because the existence of ring flange, it is bigger to take up room, and conflicts with the tuned window space on the cover plate easily.
Summary of the invention
The utility model embodiment provides a kind of cavity body filter, can reduce cost of manufacture, economical with materials.
The cavity body filter that the utility model embodiment provides comprises: the connector outer conductor on cavity, cover plate and the cover plate, have accepting hole on the described cover plate, and described connector outer conductor is contained in the accepting hole of described cover plate by interference fit.
Preferably, also comprise the connector inner wire, described connector inner wire is cylinder body shape, one end of described connector inner wire and one-body molded connection of described cavity bottom surface, the other end of described connector inner wire passes from described cover plate through hole, is provided with dielectric between described connector inner wire and the described connector outer conductor.
Preferably, also comprise the connector inner wire, described connector inner wire is cylinder body shape, one end of described connector inner wire is threaded or crimping with described cavity, the other end of described connector inner wire passes from described cover plate through hole, is provided with dielectric between described connector inner wire and the described connector outer conductor.
Preferably, described connector outer conductor adopts and makes greater than the material of cover plate hardness.
Preferably, the diameter of the part outside the described connector outer conductor accepting hole is greater than the diameter of described accepting hole.
Preferably, the accepting hole inwall setting of described cover plate is stairstepping, comprise first step portion and second step portion, the diameter of described second step portion is less than the diameter of described first step portion, and described connector outer conductor is contained in described first step portion.
Preferably, after the surface knurling of the part in the described connector outer conductor accepting hole or strip line tooth is set, described connector outer conductor were accommodated accepting hole with described cover plate, described annular knurl or line tooth were used to prevent slide relative between described connector and the accepting hole.
A kind of cavity filter cover board that present embodiment provides is provided with the connector outer conductor on the described cover plate, have accepting hole on the described cover plate, and described connector outer conductor is contained in the accepting hole of described cover plate by interference fit.
Among the utility model embodiment, adopt hard connecting mode that the connector outer conductor is fixed on the cavity filter cover board, saved the space of cover plate greatly, reduced the cost of manufacture of connector outer conductor simultaneously, saved materials.
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 partial schematic diagram of cavity filter cover board in the prior art;
Fig. 2 is the profile of cavity body filter among the utility model embodiment;
Fig. 3 is the partial schematic diagram of cavity filter cover board among the utility model embodiment;
Fig. 4 is the structure of cover plate schematic diagram of band ladder among the utility model embodiment;
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, generalized section as shown in Figure 2, comprise: the connector outer conductor 221 on cavity 210, cover plate 220 and the cover plate 220, have accepting hole 222 on the described cover plate 220, described connector outer conductor 221 is contained in the accepting hole 222 of described cover plate by interference fit.
The cavity body filter that present embodiment provides also comprises connector inner wire 223, and among the utility model embodiment, described connector inner wire can be one-body molded with cavity, also can adopt split to connect.
For one-body molded mode, an end of described connector inner wire 223 passes from described cover plate through hole with one-body molded connection of described cavity bottom surface, the other end of described connector inner wire, the mode that is formed in one shown in Fig. 2.
For the split connected mode, one end of described connector inner wire is threaded or crimping with described cavity, the other end of described connector inner wire passes from described cover plate through hole, concrete thread connecting mode can be taked multiple existing implementation, and concrete implementation does not constitute restriction of the present utility model.
Consult Fig. 2, in the present embodiment, be provided with dielectric between described connector inner wire and the described connector outer conductor, consult Fig. 3 in the lump, connector outer conductor 221 in the present embodiment and connector inner wire 223 all can design and be cylindrical shape, and circular connector outer conductor is easy to processing, when carrying out interference fit, stressed also more even, connect more firm.
In order to satisfy the needs of interference fit, described connector outer conductor can be selected for use greater than the material of cover plate hardness and make.Generally speaking, the cover plate of cavity body filter adopts aluminium, and the connector outer conductor can adopt materials similar such as copper material so, and the conductivity of copper material is also better.
When specific implementation, present embodiment can make in the following manner that the combination between connector and the cover plate is more firm.
Mode one, as shown in Figure 2 can become the diameter of diameter greater than described accepting hole 222 with connector outer conductor 221 accepting holes 222 outer partial design, and when connector bore normal pressure perpendicular to cover plate, cover plate can provide enough supports.
Mode two, the accepting hole inwall setting of described cover plate is stairstepping, as shown in Figure 4, cover plate design is comprises first step portion 2221 and second step portion 2222, the diameter of described second step portion 2222 is less than the diameter 2221 of described first step portion, and described connector outer conductor is contained in described first step portion 2221.When connector bears normal pressure perpendicular to cover plate, can provide enough supports by second step portion 2222 of cover plate.
Because the active force that bears between connector outer conductor and the cover plate mainly comes from the normal pressure of vertical cover plate, therefore among the utility model embodiment, diameter by the part that connector outer conductor accepting hole is outer is designed to the diameter greater than described accepting hole, perhaps by described second step portion of design, make that the cover plate plate body can be to carrying out enough supports from the connector outer conductor in the normal pressure of vertical cover plate direction, to improve the stability that is connected between connector outer conductor and the cover plate.
Among the utility model embodiment, part in the described connector outer conductor accepting hole can surface knurling or strip line tooth is set, after described connector outer conductor was accommodated accepting hole with described cover plate, described annular knurl or line tooth were used to prevent slide relative between described connector and the accepting hole.
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 (8)
1. cavity body filter, comprising: the connector outer conductor on cavity, cover plate and the cover plate is characterized in that have accepting hole on the described cover plate, described connector outer conductor is contained in the accepting hole of described cover plate by interference fit.
2. cavity body filter as claimed in claim 1, it is characterized in that, also comprise the connector inner wire, described connector inner wire is cylinder body shape, one end of described connector inner wire and one-body molded connection of described cavity bottom surface, the other end of described connector inner wire passes from described cover plate through hole, is provided with dielectric between described connector inner wire and the described connector outer conductor.
3. cavity body filter as claimed in claim 1, it is characterized in that, also comprise the connector inner wire, described connector inner wire is cylinder body shape, one end of described connector inner wire is threaded or crimping with described cavity, the other end of described connector inner wire passes from described cover plate through hole, is provided with dielectric between described connector inner wire and the described connector outer conductor.
4. cavity body filter as claimed in claim 1 is characterized in that, described connector outer conductor adopts and makes greater than the material of cover plate hardness.
5. as any described cavity body filter of claim 1, it is characterized in that the diameter of the part that described connector outer conductor accepting hole is outer is greater than the diameter of described accepting hole.
6. as any described cavity body filter of claim 1, it is characterized in that, the accepting hole inwall setting of described cover plate is stairstepping, comprise first step portion and second step portion, the diameter of described second step portion is less than the diameter of described first step portion, and described connector outer conductor is contained in described first step portion.
7. as any described cavity body filter of claim 1 to 6, it is characterized in that, the surface knurling of the part in the described connector outer conductor accepting hole or strip line tooth is set, after described connector outer conductor was accommodated accepting hole with described cover plate, described annular knurl or line tooth were used to prevent slide relative between described connector and the accepting hole.
8. a cavity filter cover board is characterized in that, the connector outer conductor is set on the described cover plate, has accepting hole on the described cover plate, and described connector outer conductor is contained in the accepting hole of described cover plate by interference fit.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2010201290738U CN201608263U (en) | 2010-03-12 | 2010-03-12 | Cavity filter and cavity filter cover plate |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2010201290738U CN201608263U (en) | 2010-03-12 | 2010-03-12 | Cavity filter and cavity filter cover plate |
Publications (1)
Publication Number | Publication Date |
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CN201608263U true CN201608263U (en) | 2010-10-13 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CN2010201290738U Expired - Fee Related CN201608263U (en) | 2010-03-12 | 2010-03-12 | Cavity filter and cavity filter cover plate |
Country Status (1)
Country | Link |
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CN (1) | CN201608263U (en) |
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2010
- 2010-03-12 CN CN2010201290738U patent/CN201608263U/en not_active Expired - Fee Related
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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: 20101013 Termination date: 20160312 |
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CF01 | Termination of patent right due to non-payment of annual fee |