CN203134943U - Cavity filter - Google Patents
Cavity filter Download PDFInfo
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- CN203134943U CN203134943U CN 201320080511 CN201320080511U CN203134943U CN 203134943 U CN203134943 U CN 203134943U CN 201320080511 CN201320080511 CN 201320080511 CN 201320080511 U CN201320080511 U CN 201320080511U CN 203134943 U CN203134943 U CN 203134943U
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Abstract
The utility model discloses a cavity filter including a cavity and a cover board. The cover board is used for seal the cavity for forming a resonant cavity. The cover board or the cavity is provided with a tuning tube formed with the cover board or the cavity integrally. The tuning tube is a tube body provided with an open end. The edge of the open end of the tuning tube is combined with the edge of a through hole in the cover board or the cavity. The tuning tube is inside provided with a tuning screw rod. The through hole of the cover board or the cavity is inside provided with a support piece used for installing the tuning screw rod. The support piece supports the tuning screw rod to push the bottom part of the tuning tube along the axial direction of the tuning tube, so that the tuning tube deforms elastically for adjusting radio frequency parameters of the cavity filter. According to the utility model, the radio frequency parameters are adjusted directly by employing the tuning tube, so that a resonant rod arranged in the cavity in the prior can be removed. Therefore, the space of the whole cavity is compressed, installation procedures are reduced and the cost is lowered.
Description
[technical field]
The utility model relates to the wave filter technology field, particularly a kind of 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 for selecting 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 coaxial cavity filter, and second class is dielectric filter, and the 3rd class is waveguide filter.
With regard to coaxial cavity filter (being called for short cavity body filter down), see also Fig. 1, Fig. 1 is the partial structurtes schematic diagram of cavity body filter in a kind of prior art.
As shown in Figure 1, cavity body filter comprises cavity 1, cover plate 6, tuning pipe 2 and tuning screw rod bar 3.Form resonant cavity in the cavity 1, tuning pipe 2 is fixed at the bottom of cavity 1, tuning pipe 2 is provided with shrinkage pool, tuning screw rod 3 is installed on the cover plate 6 by nut 4 and packing ring 5, and pass being inserted in the resonant cavity of cover plate, perhaps be plugged in the tuning pipe 2, stretch into the radio frequency parameter that tuning pipe 2 interior relative positions change to regulate this cavity body filter by tuning screw rod 3 is set.
In research and practice process to prior art, inventor of the present utility model finds, in the prior art, the cover plate top needs to have certain space just can hold nut, pad and adjusting screw(rod) exposed parts, the shared space of entire product is increased, and cause the space of whole system also to increase; And, when the debugging adjusting screw(rod), nuts and washers need be installed, its complex procedures, material cost and processing cost are higher.
Therefore, need provide a kind of novel solution that addresses the above problem.
[utility model content]
For the excessive and tuning screw rod that takes up room above the cover plate that solves cavity body filter in the prior art complicated problems is installed, the utility model embodiment provides a kind of cavity body filter.
The utility model embodiment solves the problems of the technologies described above the technical scheme of taking and provides a kind of cavity body filter, comprise cavity, cover plate, described cover plate is used for the described cavity of capping to form resonant cavity, described cover plate or cavity are provided with the tuning pipe integrally formed with cover plate or cavity, described tuning Guan Weiyi end opening body, be combined in the through hole edge of the open end edge of described tuning pipe on cover plate or cavity, be provided with tuning screw rod in the described tuning pipe, be provided with the strutting piece that tuning screw rod is installed in the through hole of described cover plate or cavity, the described tuning screw rod of described supports support is tuning pipe bottom along described tuning tubular axis to the direction pushing tow, makes tuning pipe generation elastic deformation regulate the radio frequency parameter of described cavity body filter.
Described strutting piece is flexure strip, described flexure strip center is provided with screwed hole, described tuning screw rod is provided with external screw thread, described tuning screw rod is threaded with flexure strip, and the elastic deformation by tuning pipe and flexure strip tightens the external screw thread of tuning screw rod and screwed hole tuning screw rod is locked between flexure strip and the tuning pipe mutually.
The edge of the through hole on described cover plate or the cavity is provided with at least two buckles, and described buckle protrudes from cover plate or housing surface, and described flexure strip is provided with projection, and described buckle and described projection tighten mutually flexure strip is fixed in the hole of described cover plate or cavity.
The sidewall of the through hole on the described cover plate is provided with at least two buckles, and described buckle does not protrude from lid surface, and described flexure strip is provided with projection, and described buckle and described projection tighten mutually flexure strip is fixed in the hole of described cover plate.
The sidewall of the through hole on described cover plate or the cavity is provided with groove, described groove is provided with breach on the surface of cover plate or cavity, the edge of described flexure strip is provided with protuberance, described protuberance is provided with projection, and described projection is connected in the described groove flexure strip is fixed in the hole of described cover plate or cavity.
The open end edge of described tuning pipe is provided with screwed hole, and described flexure strip is fixed on the described screwed hole by screw.
Described strutting piece is flexure strip, described flexure strip center is provided with through hole, described tuning screw rod and tuning pipe are one-body molded, described tuning screw rod is provided with external screw thread, described tuning screw rod passes through hole and is connected with nut on the through hole, makes tuning pipe and flexure strip generation elastic deformation that tuning screw rod is fixed between flexure strip and the tuning pipe by adjusting nut.
Described strutting piece is elastic tube, described elastic tube comprises depressed part and the joint portion that is connected with depressed part, described depressed part is positioned at described tuning pipe, described depressed part center is provided with screwed hole, described tuning screw rod is provided with external screw thread, described tuning screw rod is threaded with depressed part, and the elastic deformation by tuning pipe and flexure strip tightens the external screw thread of tuning screw rod and screwed hole tuning screw rod is locked between flexure strip and the tuning pipe mutually.
Described depressed part is provided with the elastic deformation area, and described elastic deformation area is squeezed and is out of shape the tuning screw rod of locking.
The edge of the through hole on described joint portion and described cover plate or the cavity is threaded or is connected with snap fit on the edge.
Described strutting piece is elastic tube, described elastic tube comprises depressed part and the joint portion that is connected with depressed part, described depressed part is positioned at described tuning pipe, described depressed part center is provided with through hole, described tuning screw rod and tuning pipe are one-body molded, described tuning screw rod is provided with external screw thread, described flexure strip center is provided with through hole, described tuning screw rod passes through hole and is connected with nut on the through hole, makes tuning pipe and flexure strip generation elastic deformation that tuning screw rod is fixed between flexure strip and the tuning pipe by adjusting nut.
When described tuning pipe is subjected to the thrusting action power of tuning screw rod, the body of described tuning pipe and/or open end edge generation elastic deformation.
Described cover plate, cavity, strutting piece and tuning pipe are made of plastics, and the surface that described cover plate, cover plate and tuning pipe form resonant cavity is provided with the coat of metal.
The cavity body filter that the utility model embodiment provides, compared with prior art, cavity or cover plate and tuning pipe is one-body molded, use tuning pipe directly to regulate radio frequency parameter, therefore can save the resonant rod that is located in the cavity of the prior art, compress the space of whole cavity, reduced installation procedure, reduced cost; And, because tuning screw rod is arranged in the tuning pipe, and connect by strutting piece, on the cover board end does not need to use nut and packing ring, simplified installation procedure, can reduce tuning screw rod and be arranged on the outer length of cover plate, further compress the space of whole cavity, promote the performance of entire product.
[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 structurtes profile of cavity body filter in a kind of prior art;
Fig. 2 is the partial structurtes profile according to the cavity body filter that comprises tuning pipe of the utility model embodiment;
Fig. 3 is the flexure strip structural representation according to the utility model embodiment;
Fig. 4 is according to the tuning pipe of the utility model embodiment and the partial structurtes schematic diagram of tuning screw rod;
Fig. 5 is according to the tuning pipe of the another kind of execution mode of the utility model embodiment and the partial structurtes profile of tuning screw rod;
Fig. 6 is according to the tuning pipe of the another kind of execution mode of the utility model embodiment and the partial structurtes schematic diagram of tuning screw rod;
Fig. 7 is according to the tuning pipe of another execution mode of the utility model embodiment and the partial structurtes profile of tuning screw rod;
Fig. 8 is according to the tuning pipe of another execution mode of the utility model embodiment and the partial structurtes schematic diagram of tuning screw rod.
[embodiment]
Below in conjunction with the accompanying drawing of the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is a part of embodiment of the present utility model, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that obtains under the creative work prerequisite, all belong to the scope of the utility model protection.
A kind of cavity body filter, comprise cavity, cover plate, described cover plate is used for the described cavity of capping to form resonant cavity, described cover plate or cavity are provided with the tuning pipe integrally formed with cover plate or cavity, described tuning Guan Weiyi end opening body, be combined in the through hole edge of the open end edge of described tuning pipe on cover plate or cavity, be provided with tuning screw rod in the described tuning pipe, be provided with the strutting piece that tuning screw rod is installed in the through hole of described cover plate or cavity, the described tuning screw rod of described supports support is tuning pipe bottom along described tuning tubular axis to the direction pushing tow, makes tuning pipe generation elastic deformation regulate the radio frequency parameter of described cavity body filter.
Below in conjunction with specific embodiment the utility model is described in detail.
Embodiment one, a kind of cavity body filter, as Fig. 2 to Fig. 4, comprise cavity 11, cover plate 21, described cover plate 21 is used for the described cavity 11 of capping to form resonant cavity, described cover plate 21 is provided with and the integrally formed tuning pipe 31 of cover plate, described tuning pipe 31 is an end opening body, be combined in the through hole edge of the open end edge of described tuning pipe 31 on cover plate 21, be provided with tuning screw rod 51 in the described tuning pipe 31, be provided with the strutting piece that tuning screw rod 51 is installed in the through hole of described cover plate 21, the described tuning screw rod 51 of described supports support makes tuning pipe 31 that the radio frequency parameter that described cavity body filter is regulated in elastic deformation take place along the tuning pipe of described tuning pipe 31 axial direction pushing tows 31 bottoms.
In the present embodiment processing during cover plate one process tuning pipe, during installation tuning pipe is arranged in the cavity, in the inside of tuning pipe tuning screw rod is set, because tuning pipe is flexible, and tuning pipe go deep into behind the cavity can and cavity inner surface form equivalent capacity, therefore can make tuning pipe generation elastic deformation change distance between resonatron and the cavity inner surface with the radio frequency parameter of tuning cavity fluid filter by regulating tuning screw rod.The utility model compared with prior art owing to use tuning pipe directly to regulate radio frequency parameter, therefore can save the resonant rod that is located in the cavity of the prior art, has compressed the space of whole cavity, has reduced installation procedure, has reduced cost; And, because tuning screw rod is arranged in the tuning pipe, and connect by strutting piece, can reduce tuning screw rod and be arranged on the outer length of cover plate, further compressed the space of whole cavity.
Described strutting piece is flexure strip 41, described flexure strip 41 centers are provided with screwed hole 411, described tuning screw rod 51 is provided with external screw thread, described tuning screw rod 41 is threaded with flexure strip 41, and by the elastic deformation of tuning pipe 31 and flexure strip 41 external screw thread of tuning screw rod 41 and screwed hole 411 is locked mutually between flexure strip 41 and tuning pipe 31.
A kind of execution mode of described cover plate is that the edge of the through hole of described cover plate 21 is provided with at least two buckles 61, described buckle 61 protrudes from cover plate 21 surfaces, described flexure strip 41 is provided with projection 412, and described buckle 61 and described protruding 412 tightens mutually flexure strip is fixed in the hole of described cover plate.
Described flexure strip is provided with installing hole 413.
When flexure strip is installed, at first flexure strip is placed on the step in the cover board hole, tool using makes projection and buckle interference fit on the flexure strip by the rotation of the installing hole on flexure strip flexure strip then, so that flexure strip is fixed in the hole of described cover plate.
The shape and structure of described flexure strip is not limit, and can be preferably circular configuration for square, circle or ellipse etc.
Another kind of execution mode, the sidewall of the through hole on the described cover plate is provided with at least two buckles, and described buckle does not protrude from lid surface, and described flexure strip is provided with projection, and described buckle and described projection tighten mutually flexure strip are fixed in the hole of described cover plate.
The tuning screw rod that arranges on the flexure strip can not protruded from the cover plate in the present embodiment, to reduce the space of cover plate top.
Another execution mode, the sidewall of the through hole on the described cover plate is provided with groove, described groove is provided with breach on the surface of cover plate, the edge of described flexure strip is provided with protuberance, described protuberance is provided with projection, and described projection is connected in the described groove flexure strip is fixed in the hole of described cover plate.
The tuning screw rod that arranges on the flexure strip can not protruded from the cover plate in the present embodiment, to reduce the space of cover plate top.
The 4th kind of execution mode, the open end edge of described tuning pipe is provided with screwed hole, and described flexure strip is fixed on the described screwed hole by screw.
The tuning screw rod that arranges on the flexure strip can not protruded from the cover plate in the present embodiment, to reduce the space of cover plate top.
More than in four kinds of execution modes, be positioned at the screwed hole at flexure strip center can be directly with flexure strip flange tapping or be crimped on the flexure strip with self-clinching nut again, can set the screwed hole of different length according to actual needs, as long as can fix tuning screw rod, compared with prior art can dispense nuts and washers of the prior art, improve the product utilization space of cover plate top.
Make tuning pipe generation elastic deformation by the rotation tuning screw rod, when reaching the best, the parameter in the cavity body filter stops to regulate, this moment, tuning pipe can produce the power along screw axial to tuning screw rod, can make tuning screw rod that flexure strip is produced an active force, flexure strip is deformed near the screwed hole place form an arc, this arc double thread hole can apply one to the externally threaded power of tuning screw rod, make the external screw thread of flexure strip screwed hole internal thread and tuning screw rod produce the effect of a power, thereby tuning screw rod is locked between flexure strip and the tuning pipe.
Described strutting piece is flexure strip, another kind of execution mode, described flexure strip center is provided with through hole, described tuning screw rod and tuning pipe are one-body molded, described tuning screw rod is provided with external screw thread, described tuning screw rod passes through hole and is connected with nut on the through hole, makes tuning pipe and flexure strip generation elastic deformation that tuning screw rod is fixed between flexure strip and the tuning pipe by adjusting nut.
Make tuning pipe generation elastic deformation by rotating nut, when reaching the best, the parameter in the cavity body filter stops to regulate, this moment, tuning pipe can produce the power along screw axial to tuning screw rod, can make tuning screw rod that flexure strip is produced an active force, flexure strip is deformed, make the external screw thread of flexure strip screwed hole internal thread and tuning screw rod produce the effect of a power, thereby tuning screw rod is locked between flexure strip and the tuning pipe.
As Fig. 5 to Fig. 8, the another kind of execution mode of described strutting piece is elastic tube 71, described elastic tube 71 comprises depressed part 712 and the joint portion 711 that is connected with depressed part, described depressed part 712 is positioned at described tuning pipe, described depressed part 712 centers are provided with screwed hole, described tuning screw rod is provided with external screw thread, described tuning screw rod is threaded with depressed part 712, and by the elastic deformation of tuning pipe and elastic tube the external screw thread of tuning screw rod and screwed hole is locked mutually between elastic tube and tuning pipe.
Described depressed part is provided with the elastic deformation area, and described elastic deformation area is squeezed and is out of shape the tuning screw rod of locking.
Make tuning pipe generation elastic deformation by the rotation tuning screw rod, when reaching the best, the parameter in the cavity body filter stops to regulate, this moment, tuning pipe can produce the power along screw axial to tuning screw rod, can make tuning screw rod that elastic tube is produced an active force, elastic deformation area on the elastic tube depressed area is deformed, make the external screw thread of the interior screwed hole internal thread of elastic tube and tuning screw rod produce the effect of a power, thereby tuning screw rod is locked between flexure strip and the tuning pipe.
The edge of the through hole on described joint portion and described cover plate or the cavity is threaded or is connected with snap fit on the edge.
Another kind of execution mode, described strutting piece is elastic tube, described elastic tube comprises depressed part and the joint portion that is connected with depressed part, described depressed part is positioned at described tuning pipe, described depressed part center is provided with through hole, described tuning screw rod and tuning pipe are one-body molded, described tuning screw rod is provided with external screw thread, described flexure strip center is provided with through hole, described tuning screw rod passes through hole and is connected with nut on the through hole, makes tuning pipe and flexure strip generation elastic deformation that tuning screw rod is fixed between flexure strip and the tuning pipe by adjusting nut.
The utility model embodiment arranges screwed hole at the flexure strip that is arranged on cover plate, tuning screw rod directly is connected with screwed hole, on the cover board end does not need to use nut and packing ring, simplified installation procedure, saved material cost simultaneously, increase the space that utilizes of cover plate top, promoted the performance of entire product.
Described tuning pipe 31 is one-body molded with cover plate 21, and described tuning pipe 31 forms the space of sealing with cover plate 21.Because tuning pipe and cover plate form the space of sealing, in the process of tuning screw rod debugging, prevent that tuning screw rod and other chips from entering into tuning pipe, and can not enter in the cavity, improved intermodulation, improved the index of product simultaneously.
Described tuning pipe 31 comprises the elastic deformation area, and described tuning pipe 31 links to each other with cover plate by the elastic deformation area.
Described tuner 51 contacts with described tuning pipe 31, and the described tuning pipe of described tuning screw rod pushing tow makes the elastic deformation area that the radio frequency parameter that described cavity body filter is regulated in elastic deformation take place.
Another kind of execution mode, described tuning pipe is flexible.
Tuner, described tuner contacts with described tuning pipe, makes tuning pipe generation elastic deformation regulate the radio frequency parameter of described cavity body filter by the described tuning pipe of described tuner pushing tow.
Make tuning pipe generation elastic deformation regulate the radio frequency parameter of this cavity body filter by this tuning pipe of this tuner pushing tow.In the present embodiment, can regulate the radio frequency parameter of cavity body filter by the elastic deformation of tuning pipe.
A kind of brand-new cavity body filter radio frequency parameter adjustment structure that present embodiment provides.Can regulate the radio frequency parameter of cavity body filter by the elastic deformation of tuning pipe.Simultaneously, because elastic tuning pipe can take the mode of stamped sheet metal to process, greatly reduce tuning pipe turning cost of processing in the prior art.
In preferred embodiment of the present utility model, cavity 11 adopts the metal manufacturing, and it can be processed as square cavity or circular cavity.The side of cavity 11 is provided with some screws, and screw is used for cover plate 21 is fixedly installed in cavity 11.Have the area coverage with cavity 11 openings couplings on the cover plate 21, cover plate 21 cooperates with some screws by some screws and is sealingly fastened on the cavity 11 the formation resonant cavity.Sealing can realize electromagnetic shielding, prevents leakage signal.In addition, cover plate 21 is provided with the hole, and flexure strip 41 be used for is installed in described hole, and the centre bore of flexure strip 41 is provided with screw thread, and the tuning screw spiral by the screw thread on the tuning screw rod 51 and flexure strip 41 fits into the line parameter adjusting.Need to prove that in order to narrate conveniently, only shown a resonant cavity among the figure in this article, the cavity body filter in the practical application may comprise a plurality of resonant cavitys, cavity body filter carries out work by the coupling each other of a plurality of resonant cavitys.
To introduce the tuning configuration mode according to the cavity body filter of the utility model embodiment below in detail.Specifically, tuning screw rod 51 passes the screwed hole 411 at flexure strip 41 centers.First end of tuning screw rod 51 stretches in the tuning pipe 31, lean with the bottom surface of this tuning pipe 41, second end of this tuning screw rod 51 is provided with the screw thread with screwed hole 411 coupling of flexure strip 41, screwed hole 411 spirals of the second end relative resilient sheet 41 by tuning screw rod 51 fit into line parameter and regulate, and impel first end of tuning screw rod 51 to carry out the action of the tuning pipe of pushing tow 31 bottoms.In addition, second end of this tuning screw rod 51 further is provided with the adjusting portion of being convenient to regulate.This adjusting portion can be to be located at a word or the cross recess of second end of this tuning screw rod, with convenient artificial or machine automation adjusting.Certainly, tuner is not limited as above-mentioned tuning screw rod, and it also can be that those skilled in the art know or habitual other can be realized the device of tuber function.
In the utility model embodiment, screwed hole 411 spirals of the relative relative resilient sheet 41 of second end by tuning screw rod 51 fit into line parameter and regulate, impel first end of tuning screw rod 51 to carry out the action of the tuning pipe of pushing tow 31 bottoms, because tuning pipe 31 has elasticity, the pushing tow action of tuning screw rod 40 can make tuning pipe 31 that integral body or local elasticity's distortion take place, the bottom of tuning pipe 31 changes with respect to the distance of cavity 11 bottoms, and then changes the radio frequency parameter of cavity body filter.
Certainly, the cavity body filter of the utility model embodiment also can comprise various other conventional components or structure, herein, present embodiment is only to partly being described with present embodiment utility model spot correlation, other concrete parts or structure, can not constitute restriction of the present utility model with reference to the existing conventional implementation.
Tuning pipe elastically deformable among the utility model embodiment, above embodiment have illustrated that the particular location in elastically deformable district is unrestricted.Can be distributed in the regional area of tuning pipe such as the elastically deformable district, perhaps tuning pipe integral body all belongs to the elastically deformable district.Simultaneously the utility model embodiment has following modification at least: impel the external influence power of tuning pipe generation modification not to be subject to tuner and contact to apply jacking force bottom tuning pipe.For example tuner can contact to apply jacking force with the outside of tuning pipe or with the junction surface, as long as can realize the elastic deformation of tuning pipe.Certainly, the mounting means of tuner also needs corresponding the adjustment, such as, directly be installed on the cavity or change installation direction etc. as required.
Cover plate described in the utility model embodiment, cavity, strutting piece and tuning pipe are made of plastics, the surface that described cover plate, cover plate and tuning pipe form resonant cavity is provided with the coat of metal, adopt the cost that this structure can economical with materials, and the weight of whole cavity is diminished.
Adopt among the utility model embodiment and on the cover board be provided with the tuning pipe that one connects, tuning pipe can also be applied on the cavity in above-described embodiment.
The disclosed tuning pipe of the utility model embodiment is flexible, utilize the elastic deformation of tuning pipe to change the radio frequency parameter of cavity body filter, it designs unique, not only functional, and in order to realize elastic deformation, the thinner thickness of tuning pipe, the tuning pipe that can adopt the punching stretch mode to make, its manufacturing process is simple and easy, cost is cheaper.The tuning pipe of this rubber-like is applied to the transceiver circuit part of cavity body filter and communication equipment, has not only improved the performance of equipment, reduced equipment cost simultaneously effectively.
It is pointed out that terms such as " first " mentioned, " second " only are the letter symbols that adopts as required in the utility model embodiment one embodiment, in practice, be not limited to this, and this Chinese character number can be exchanged use.
In the above-described embodiments, only the utility model embodiment has been carried out exemplary description, but those skilled in the art can carry out various modifications to the utility model embodiment after reading present patent application under the situation of the spirit and scope that do not break away from the utility model embodiment.
Claims (13)
1. cavity body filter, comprise cavity, cover plate, described cover plate is used for the described cavity of capping to form resonant cavity, it is characterized in that, described cover plate or cavity are provided with the tuning pipe integrally formed with cover plate or cavity, described tuning Guan Weiyi end opening body, be combined in the through hole edge of the open end edge of described tuning pipe on cover plate or cavity, be provided with tuning screw rod in the described tuning pipe, be provided with the strutting piece that tuning screw rod is installed in the through hole of described cover plate or cavity, the described tuning screw rod of described supports support is tuning pipe bottom along described tuning tubular axis to the direction pushing tow, makes tuning pipe generation elastic deformation regulate the radio frequency parameter of described cavity body filter.
2. cavity body filter according to claim 1, it is characterized in that, described strutting piece is flexure strip, described flexure strip center is provided with screwed hole, described tuning screw rod is provided with external screw thread, described tuning screw rod is threaded with flexure strip, and the elastic deformation by tuning pipe and flexure strip tightens the external screw thread of tuning screw rod and screwed hole tuning screw rod is locked between flexure strip and the tuning pipe mutually.
3. cavity body filter according to claim 2, it is characterized in that, the edge of the through hole on described cover plate or the cavity is provided with at least two buckles, described buckle protrudes from cover plate or housing surface, described flexure strip is provided with projection, and described buckle and described projection tighten mutually flexure strip is fixed in the hole of described cover plate or cavity.
4. cavity body filter according to claim 2, it is characterized in that, the sidewall of the through hole on the described cover plate is provided with at least two buckles, described buckle does not protrude from lid surface, described flexure strip is provided with projection, and described buckle and described projection tighten mutually flexure strip is fixed in the hole of described cover plate.
5. cavity body filter according to claim 2, it is characterized in that, the sidewall of the through hole on described cover plate or the cavity is provided with groove, described groove is provided with breach on the surface of cover plate or cavity, the edge of described flexure strip is provided with protuberance, described protuberance is provided with projection, and described projection is connected in the described groove flexure strip is fixed in the hole of described cover plate or cavity.
6. cavity body filter according to claim 2 is characterized in that, the open end edge of described tuning pipe is provided with screwed hole, and described flexure strip is fixed on the described screwed hole by screw.
7. cavity body filter according to claim 1, it is characterized in that, described strutting piece is flexure strip, described flexure strip center is provided with through hole, described tuning screw rod and tuning pipe are one-body molded, described tuning screw rod is provided with external screw thread, and described tuning screw rod passes through hole and is connected with nut on the through hole, makes tuning pipe and flexure strip generation elastic deformation that tuning screw rod is fixed between flexure strip and the tuning pipe by adjusting nut.
8. cavity body filter according to claim 1, it is characterized in that, described strutting piece is elastic tube, described elastic tube comprises depressed part and the joint portion that is connected with depressed part, described depressed part is positioned at described tuning pipe, described depressed part center is provided with screwed hole, described tuning screw rod is provided with external screw thread, described tuning screw rod is threaded with depressed part, and the elastic deformation by tuning pipe and flexure strip tightens the external screw thread of tuning screw rod and screwed hole tuning screw rod is locked between flexure strip and the tuning pipe mutually.
9. cavity body filter according to claim 8 is characterized in that, described depressed part is provided with the elastic deformation area, and described elastic deformation area is squeezed and is out of shape the tuning screw rod of locking.
10. cavity body filter according to claim 9 is characterized in that, the edge of the through hole on described joint portion and described cover plate or the cavity is threaded or is connected with snap fit on the edge.
11. cavity body filter according to claim 1, it is characterized in that, described strutting piece is elastic tube, described elastic tube comprises depressed part and the joint portion that is connected with depressed part, described depressed part is positioned at described tuning pipe, described depressed part center is provided with through hole, described tuning screw rod and tuning pipe are one-body molded, described tuning screw rod is provided with external screw thread, described flexure strip center is provided with through hole, described tuning screw rod passes through hole and is connected with nut on the through hole, makes tuning pipe and flexure strip generation elastic deformation that tuning screw rod is fixed between flexure strip and the tuning pipe by adjusting nut.
12. according to any described cavity body filter of claim 1 to 11, it is characterized in that, when described tuning pipe is subjected to the thrusting action power of tuning screw rod, the body of described tuning pipe and/or open end edge generation elastic deformation.
13. cavity body filter according to claim 12 is characterized in that, described cover plate, cavity, strutting piece and tuning pipe are made of plastics, and the surface that described cover plate, cover plate and tuning pipe form resonant cavity is provided with the coat of metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320080511 CN203134943U (en) | 2012-11-16 | 2013-02-21 | Cavity filter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220606251 | 2012-11-16 | ||
| CN201220606251.0 | 2012-11-16 | ||
| CN 201320080511 CN203134943U (en) | 2012-11-16 | 2013-02-21 | Cavity filter |
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| CN203134943U true CN203134943U (en) | 2013-08-14 |
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| CN 201320080511 Expired - Lifetime CN203134943U (en) | 2012-11-16 | 2013-02-21 | Cavity filter |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103107389A (en) * | 2012-11-16 | 2013-05-15 | 深圳市大富科技股份有限公司 | Cavity filter |
| CN105449333A (en) * | 2015-10-27 | 2016-03-30 | 中国电子科技集团公司第三十八研究所 | Microwave cavity stability optimization method independent of circuit and miniaturization microwave assembly obtained based on the same |
| CN107770942A (en) * | 2017-11-21 | 2018-03-06 | 中国原子能科学研究院 | A kind of tunable accelerating cavity and its tuning instrument |
| CN112072232A (en) * | 2020-08-24 | 2020-12-11 | 安徽蓝讯电子科技有限公司 | Cavity filter and communication radio frequency equipment |
| WO2021134425A1 (en) * | 2019-12-31 | 2021-07-08 | 深圳市大富科技股份有限公司 | Cavity filter and communication device |
| CN113131114A (en) * | 2019-12-31 | 2021-07-16 | 深圳市大富科技股份有限公司 | Cavity filter, cover plate assembly thereof and communication equipment |
-
2013
- 2013-02-21 CN CN 201320080511 patent/CN203134943U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103107389A (en) * | 2012-11-16 | 2013-05-15 | 深圳市大富科技股份有限公司 | Cavity filter |
| CN105449333A (en) * | 2015-10-27 | 2016-03-30 | 中国电子科技集团公司第三十八研究所 | Microwave cavity stability optimization method independent of circuit and miniaturization microwave assembly obtained based on the same |
| CN107770942A (en) * | 2017-11-21 | 2018-03-06 | 中国原子能科学研究院 | A kind of tunable accelerating cavity and its tuning instrument |
| WO2021134425A1 (en) * | 2019-12-31 | 2021-07-08 | 深圳市大富科技股份有限公司 | Cavity filter and communication device |
| CN113131114A (en) * | 2019-12-31 | 2021-07-16 | 深圳市大富科技股份有限公司 | Cavity filter, cover plate assembly thereof and communication equipment |
| CN112072232A (en) * | 2020-08-24 | 2020-12-11 | 安徽蓝讯电子科技有限公司 | Cavity filter and communication radio frequency equipment |
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