CN102544655A - Cavity filter and cavity filter cover plate - Google Patents
Cavity filter and cavity filter cover plate Download PDFInfo
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- CN102544655A CN102544655A CN2011103911328A CN201110391132A CN102544655A CN 102544655 A CN102544655 A CN 102544655A CN 2011103911328 A CN2011103911328 A CN 2011103911328A CN 201110391132 A CN201110391132 A CN 201110391132A CN 102544655 A CN102544655 A CN 102544655A
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Abstract
The invention discloses a cavity filter and a cavity filter cover plate. The cavity filter comprises a cavity and the cover plate covered on the cavity. A thread hole for installing an adjusting screw is arranged on the cover plate, the adjusting screw penetrates through the cover plate to enter the cavity, the head portion of the adjusting screw is located in the thread hole, and the top surface of the head portion of the adjusting screw is lower than the outer surface of the cover plate or parallel and level with the outer surface of the cover plate. The cover plate is thinner than the cover plate in the prior art and reduces product cost, a boss is arranged on the cover plate so that the adjusting screw and the cover plate are contacted more firmly, and reinforcing ribs are arranged on the periphery of the boss so that rigidity and strength of the cover plate are increased and product performance is improved. The adjusting screw and a fixed screw are arranged inside the cover plate so that height of the cavity filter is reduced, occupied space of the cavity filter is reduced, and product cost is further saved.
Description
Technical field
The present invention relates to a kind of cavity body filter and cavity filter cover board.
Background technology
Cavity filter cover board is made up of alloys such as aluminium, magnesium or iron usually, is mainly used in filter cavity to cooperate, and forms resonant cavity; At present the thickness of cover plate is 4mm at least, and is extremely shown in Figure 3 like Fig. 1, is cavity filter cover board in the prior art and cavity body filter structural representation; Cover plate 1 is provided with screwed hole 2 that is used for the install adjustment screw and the screwing through hole 3 that is used to install and fix screw, and cover plate needs enough rigidity and intensity usually, is locked on the filter cavity 4 through hold-down screw 5; Make behind the cover plate can with the cavity excellent contact, in addition, cover plate also will have enough thickness; Adjustment screw 6 and screwed hole are locked reliably, said hold-down screw 5 and adjustment screw 6 equal some be positioned at cover plate 1 above, the thickness of establishing cover plate is h3; The height of cavity is h1; The thickness of cavity bottom is h2, and the part that adjustment screw exceeds on the cover plate highly is h5, and the whole height of cavity body filter is h6=h1+h2+h3+h5.
In research and practice process to prior art, inventor of the present invention finds rigidity and the intensity in order to guarantee cover plate, must increase the thickness of whole cover plate; Can increase the thickness of whole cavity body filter, cause increasing the cost of entire product, in addition; Hold-down screw and adjustment screw all some be positioned at cover plate above, make the overall dimensions of cavity body filter elongated, taken very big space; And increased manufacturing cost; And this part height space just to be used for holding nut, pad, adjustment screw and screw first-class, and the resonance space that is used as of no use is used, and has caused space waste.
Summary of the invention
The present invention causes cost increase and the long defective of overall filter size for solving in the prior art for rigidity that guarantees cover plate and the thickness that intensity increases whole cover plate, and a kind of cavity filter cover board and cavity body filter are provided.
For realizing the foregoing invention purpose, the present invention adopts following technical scheme:
A kind of cavity body filter; Comprise: cavity with cover the cover plate on the cavity; Said cover plate is provided with the screwed hole of install adjustment screw; Said adjustment screw is passed said cover plate and is got into cavity, and the head of said adjustment screw is positioned at said screwed hole, the end face of the head of said adjustment screw be lower than said cover plate outer surface or with the outer surface flush of said cover plate.
A kind of cavity filter cover board; Said cover plate is provided with the screwed hole of install adjustment screw; Said adjustment screw is passed said cover plate and is got into cavity; The head of said adjustment screw is positioned at said screwed hole, the end face of the head of said adjustment screw be lower than said cover plate outer surface or with the outer surface flush of said cover plate.
The present invention relates to a kind of cavity body filter and cavity filter cover board, with respect to prior art, the thickness of cover plate is thinner than prior art; Reduced the cost of product, boss on the cover board is set, it is more firm that adjustment screw is contacted with cover plate; Around boss, reinforcement is set, has increased the rigidity and the intensity of cover plate, improved performance of products; And adjustment screw and hold-down screw be arranged on the inside of cover plate; Reduce the height of cavity body filter, reduced the shared space of cavity body filter, further practiced thrift the cost of product.
Description of drawings
In order to be illustrated more clearly in the technical scheme in the embodiment of the invention, the accompanying drawing of required use is done to introduce simply in will describing embodiment below.
Fig. 1 is cavity body filter covering plate structure sketch map in the prior art;
Fig. 2 is cavity body filter partial structurtes cutaway view in the prior art;
Fig. 3 is cavity body filter partial structurtes sketch map in the prior art;
Fig. 4 is the embodiment of the invention one a cavity body filter partial structurtes cutaway view;
Fig. 5 is the embodiment of the invention one a cavity body filter partial structurtes cutaway view;
Fig. 6 is the embodiment of the invention one a cavity body filter partial structurtes sketch map;
Fig. 7 is the embodiment of the invention two cavity body filter partial structurtes cutaway views;
Fig. 8 is the embodiment of the invention three cavity filter cover boards one side partial structurtes sketch mapes;
Fig. 9 is the embodiment of the invention three cavity filter cover board another side partial structurtes sketch mapes.
Embodiment
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, 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 present invention's protection.
Embodiment one provides a kind of cavity body filter; Like Fig. 3, Fig. 4, Fig. 6 and shown in Figure 9; Comprise: cavity 4 with cover the cover plate 1 on the cavity, said cover plate 1 is provided with the screwed hole of install adjustment screw 6, said adjustment screw 6 is passed said cover plate 1 and is got into cavity 4; The head of said adjustment screw 6 is positioned at said screwed hole, the end face of the head of said adjustment screw be lower than said cover plate outer surface or with the outer surface flush of said cover plate.
Said cover plate 1 is provided with boss on the side near filter cavity, said boss is connected with said screwed hole and is processed with screw thread, the threaded portion of the screwed hole that is used to extend.
The screwed hole of said adjustment screw is arranged at the position of answering with said cavity interior resonance pole pair, and said adjustment screw is passed the corresponding screwed hole of resonant rod and is connected with said screwed hole and processes the hollow space that threaded boss 7 stretches into resonant rod.
The screwed hole of said adjustment screw is arranged at the corresponding position of coupling window between the cavity interior resonance chamber, and the boss 9 that said adjustment screw is passed said screwed hole and screwed hole bottom stretches into coupling window.
Also be provided with reinforcement on the said cover plate, boss 9 corresponding with coupling window on the said cover plate links together with said reinforcement.
The thickness of said cover plate 1 is H3, also is provided with reinforcement around said cover plate 1 convex platform 7, and the thickness of said cover plate and reinforcement is H4.The thickness H3 of said cover plate is made as 0.5～3mm, can adopt 0.5mm, 1mm, 1.5mm, 2mm or 3mm.Because the thickness of cover plate is too thin, the boss that is connected with screwed hole on the cover board is set, be provided with screw thread in the boss; The screw thread of screwed hole is used to extend; During the install adjustment screw, boss and adjustment screw are locked each other, because boss is set; Make the robust more that contacts of adjustment screw and cover plate, avoided cover plate to cross thin insecure defective that contacts with adjustment screw.
Said reinforcement links together with the corresponding boss of coupling window with said; With the said boss corresponding with coupling window is the reinforcement that middle mind-set is extended all around; Can be provided with the boss corresponding with coupling window on the said cover plate, be also not only one of the reinforcement that extends around the middle mind-set with the boss corresponding with coupling window, and said reinforcement can prolong a bit ofly promptly to be ended; Do not contact, can constantly prolong yet up to being connected with other reinforcements with other reinforcements.Around the boss corresponding, reinforcement is set, has avoided manufacturing cost has been practiced thrift in whole cover plate thickening, strengthened the strength and stiffness of cover plate simultaneously again,, can increase the height of reinforcement in order further to strengthen the strength and stiffness of cover plate with coupling window.
Be provided with isolation bar in the said cavity, the reinforcement on the said cover plate links together mutually through the boss corresponding with coupling window, and the distribution shape of said reinforcement is consistent with the distribution shape of said isolation bar.Isolation bar in the lower surface of said cover plate and the cavity forms resonant cavity, and the lower surface of cover plate is provided with reinforcement with the corresponding position of isolation bar that forms resonant cavity.
Be provided with the step via hole 8 that is used to install and fix screw 5 in the said reinforcement; Said hold-down screw 5 is used for cover plate 1 is fixed on cavity 4; The head of said adjustment screw is positioned at said screwed hole, the end face of the head of said adjustment screw be lower than said cover plate outer surface or with the outer surface flush of said cover plate.
Be provided with frame 10 around on the said cover plate 1; Said frame 10 is provided with the step via hole that installs and fixes screw; Said hold-down screw is installed in cover plate on the filter cavity through said step via hole, and the head of said hold-down screw is positioned at the outer surface flush of the end face and the said cover plate of said step via hole or head.
The another kind of execution mode of present embodiment, of Fig. 5, also can not be provided with boss.
Compare with Fig. 2 like Fig. 4; The whole height h6 of cavity body filter remains unchanged; The size h5 that exceeds cover plate in the prior art is incorporated in the filter cavity; Increased the resonance space of cavity body filter, can do the frequency of filter lowlyer, resonant rod can adopt the mode that is more suitable for low frequency to design and produce simultaneously.
When the height of filter is constant (h6 is constant), adopt embodiment of the invention Q value to do more, index is better.Because resonance space increases, resonant rod can adopt the mode that is more suitable for strengthening the Q value to design and produce.
The present invention compared with prior art can reduce the height of cavity body filter, and main cause is following: 1, the thickness of cover plate is thinner than prior art, and boss and isolation bar on the cover board are set, and utilizes boss and isolation bar to increase the rigidity and the intensity of cover plate; 2, adjustment screw and hold-down screw are arranged on cover plate inside; Stretch out in cover plate outside with adjustment screw of the prior art and hold-down screw and to compare, further reduced the height of cavity body filter, utilize boss and isolation bar; Screwed hole is set in boss and step is set in isolation bar; Make adjustment screw and hold-down screw be arranged on cover plate inside, do not reduce the height of adjustment screw, also can not influence the performance of cavity body filter.
The present invention relates to a kind of cavity body filter, the thickness of cover plate is thinner than prior art, has reduced the cost of product; Boss on the cover board is set, and it is more firm that adjustment screw is contacted with cover plate, and reinforcement is set around boss; Increased the rigidity and the intensity of cover plate, improved performance of products, and adjustment screw and hold-down screw have been arranged on the inside of cover plate; Reduce the height of cavity body filter, reduced the shared space of cavity body filter, further practiced thrift the cost of product.
Embodiment two
A kind of cavity body filter; As shown in Figure 7; Comprise: cavity with cover the cover plate on the cavity, said cover plate is provided with the screwed hole of install adjustment screw, said adjustment screw is passed said cover plate and is got into cavity; The head of said adjustment screw is positioned at said screwed hole, the end face of the head of said adjustment screw be lower than said cover plate outer surface or with the outer surface flush of said cover plate.
Said cover plate is provided with boss near filter cavity one side, said boss is connected with said screwed hole and is processed with screw thread, the threaded portion of the screwed hole that is used to extend.
The thickness of said cover plate is 0.5～3mm.
The screwed hole of said adjustment screw is arranged at the position of answering with said cavity interior resonance pole pair, and said adjustment screw stretches into the hollow space of resonant rod.
The screwed hole of said adjustment screw is arranged at the corresponding position of coupling window between the cavity interior resonance chamber, and the boss that said adjustment screw is passed said screwed hole and screwed hole bottom stretches into coupling window.
Also be provided with reinforcement on the said cover plate, boss and said reinforcement corresponding with coupling window on the said cover plate link together.
The thickness of said cover plate 1 is H3, also is provided with reinforcement around said cover plate 1 convex platform 7, and the thickness of said cover plate and reinforcement is H4.The thickness H3 of said cover plate is made as 0.5～3mm, can adopt 0.5mm, 1mm, 1.5mm, 2mm or 3mm.Because the thickness of cover plate is too thin, the boss that is connected with screwed hole on the cover board is set, be provided with screw thread in the boss; The screw thread of screwed hole is used to extend; During the install adjustment screw, boss and adjustment screw are locked each other, because boss is set; Make the robust more that contacts of adjustment screw and cover plate, avoided cover plate to cross thin insecure defective that contacts with adjustment screw.
The height h1 of cavity about equally in the height H 1 of the embodiment of the invention two filter cavities and the prior art; The height H 6 of cavity body filter is less than cavity body filter height h6 of the prior art; The reason of cavity filtering size decreases mainly contains: the thickness H 3 of cover plate is littler than the thickness h 3 of prior art cover plate, has reduced the height of h5 in the prior art, and compared with prior art filter list chamber Q value is approximately identical; The existing design of filter aspect ratio reduces; Because the height of filter reduces, reduced the space of assembling filter, reduced production cost.
Embodiment three,
A kind of cavity filter cover board; Like Fig. 8 and shown in Figure 9; Said cover plate 1 is provided with the screwed hole of install adjustment screw; Said adjustment screw is passed said cover plate and is got into cavity, and the head of said adjustment screw is positioned at said screwed hole, the end face of the head of said adjustment screw be lower than said cover plate outer surface or with the outer surface flush of said cover plate.
Said cover plate 1 is provided with boss on the side near filter cavity, said boss is connected with said screwed hole and is processed with screw thread, the threaded portion of the screwed hole that is used to extend.
The screwed hole of said adjustment screw is arranged at the position of answering with said cavity interior resonance pole pair, and said adjustment screw is passed the corresponding screwed hole of resonant rod and is connected with said screwed hole and processes the hollow space that threaded boss 7 stretches into resonant rod.
The screwed hole of said adjustment screw is arranged at the corresponding position of coupling window between the cavity interior resonance chamber, and the boss 9 that said adjustment screw is passed said screwed hole and screwed hole bottom stretches into coupling window.
Also be provided with reinforcement on the said cover plate, boss 9 corresponding with coupling window on the said cover plate links together with said reinforcement.
The thickness of said cover plate 1 is H3, also is provided with reinforcement around said cover plate 1 convex platform 7, and the thickness of said cover plate and reinforcement is H4.The thickness H3 of said cover plate is made as 0.5～3mm, can adopt 0.5mm, 1mm, 1.5mm, 2mm or 3mm.Because the thickness of cover plate is too thin, the boss that is connected with screwed hole on the cover board is set, be provided with screw thread in the boss; The screw thread of screwed hole is used to extend; During the install adjustment screw, boss and adjustment screw are locked each other, because boss is set; Make the robust more that contacts of adjustment screw and cover plate, avoided cover plate to cross thin insecure defective that contacts with adjustment screw.
Said reinforcement links together with the corresponding boss of coupling window with said; With the said boss corresponding with coupling window is the reinforcement that middle mind-set is extended all around; Can be provided with the boss corresponding with coupling window on the said cover plate, be also not only one of the reinforcement that extends around the middle mind-set with the boss corresponding with coupling window, and said reinforcement can prolong a bit ofly promptly to be ended; Do not contact, can constantly prolong yet up to being connected with other reinforcements with other reinforcements.Around the boss corresponding, reinforcement is set, has avoided manufacturing cost has been practiced thrift in whole cover plate thickening, strengthened the strength and stiffness of cover plate simultaneously again,, can increase the height of reinforcement in order further to strengthen the strength and stiffness of cover plate with coupling window.
Said cover plate is provided with the step via hole 8 that is used to install and fix screw 5; Said hold-down screw 5 is used for cover plate 1 is fixed on cavity 4, and the head of said hold-down screw 5 is positioned at the outer surface flush of the end face end face and the said cover plate of said step via hole 8 or head.
Be provided with frame 10 around on the said cover plate 1; Said frame 10 is provided with the step via hole that installs and fixes screw; Said hold-down screw is installed in cover plate on the filter cavity through said step via hole, and the head of said hold-down screw is positioned at the outer surface flush of the end face and the said cover plate of said step via hole or head.
The present invention relates to a kind of cavity filter cover board, the thickness of cover plate is thinner than prior art, has reduced the cost of product; Boss on the cover board is set, and it is more firm that adjustment screw is contacted with cover plate, and reinforcement is set around boss; Increased the rigidity and the intensity of cover plate, improved performance of products, and adjustment screw and hold-down screw have been arranged on the inside of cover plate; Reduce the height of cavity body filter, reduced the shared space of cavity body filter, further practiced thrift the cost of product.
Used concrete example among this paper principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for those of ordinary skill in the art, according to thought of the present invention, the part that on embodiment and range of application, all can change, in sum, this description should not be construed as limitation of the present invention.
Claims (12)
1. cavity body filter; It is characterized in that: comprising: cavity with cover the cover plate on the cavity; Said cover plate is provided with the screwed hole of install adjustment screw; Said adjustment screw is passed said cover plate and is got into cavity, and the head of said adjustment screw is positioned at said screwed hole, the end face of the head of said adjustment screw be lower than said cover plate outer surface or with the outer surface flush of said cover plate.
2. cavity body filter according to claim 1 is characterized in that: said cover plate is provided with boss near filter cavity one side, and said boss is connected with said screwed hole and is processed with screw thread, the threaded portion of the screwed hole that is used to extend.
3. cavity body filter according to claim 1 is characterized in that: the thickness of said cover plate is 0.5～3mm.
4. cavity body filter according to claim 2 is characterized in that: the screwed hole of said adjustment screw is arranged at the position of answering with said cavity interior resonance pole pair, and said adjustment screw stretches into the hollow space of resonant rod.
5. cavity body filter according to claim 2; It is characterized in that: the screwed hole of said adjustment screw is arranged at the corresponding position of coupling window between the cavity interior resonance chamber, and the boss that said adjustment screw is passed said screwed hole and screwed hole bottom stretches into coupling window.
6. cavity body filter according to claim 5 is characterized in that: also be provided with reinforcement on the said cover plate, boss and said reinforcement corresponding with coupling window on the said cover plate link together.
7. cavity body filter according to claim 6 is characterized in that: be provided with isolation bar in the said cavity, the distribution shape of said reinforcement is consistent with the distribution shape of said isolation bar.
8. cavity body filter according to claim 6; It is characterized in that: be provided with the step via hole that is used to install and fix screw in the said reinforcement; Said hold-down screw is used for cover plate is fixed on cavity; The head of said adjustment screw is positioned at said screwed hole, the end face of the head of said adjustment screw be lower than said cover plate outer surface or with the outer surface flush of said cover plate.
9. cavity body filter according to claim 8; It is characterized in that: be provided with frame around on the said cover plate; Said frame is provided with the step via hole that installs and fixes screw; Said hold-down screw is installed in cover plate on the filter cavity through said step via hole, and the head of said hold-down screw is positioned at the outer surface flush of the end face and the said cover plate of said step via hole or head.
10. cavity filter cover board; It is characterized in that: said cover plate is provided with the screwed hole of install adjustment screw; Said adjustment screw is passed said cover plate and is got into cavity; The head of said adjustment screw is positioned at said screwed hole, the end face of the head of said adjustment screw be lower than said cover plate outer surface or with the outer surface flush of said cover plate.
11. cavity filter cover board according to claim 10 is characterized in that: said cover plate is provided with boss near filter cavity one side, and said boss is connected with said screwed hole and is processed with screw thread, the threaded portion of the screwed hole that is used to extend.
12. cavity filter cover board according to claim 11; It is characterized in that: also be provided with reinforcement on the said cover plate; Be provided with the step via hole that is used to install and fix screw in the said reinforcement; Said hold-down screw is used for cover plate is fixed on cavity, and the head of said adjustment screw is positioned at said screwed hole, the end face of the head of said adjustment screw be lower than said cover plate outer surface or with the outer surface flush of said cover plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110391132.8A CN102544655B (en) | 2011-11-30 | 2011-11-30 | Cavity filter and cavity filter cover plate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110391132.8A CN102544655B (en) | 2011-11-30 | 2011-11-30 | Cavity filter and cavity filter cover plate |
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| CN102544655A true CN102544655A (en) | 2012-07-04 |
| CN102544655B CN102544655B (en) | 2014-07-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110391132.8A Active CN102544655B (en) | 2011-11-30 | 2011-11-30 | Cavity filter and cavity filter cover plate |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2015192481A1 (en) * | 2014-06-17 | 2015-12-23 | 中兴通讯股份有限公司 | Filter cover plate, filter and machining method of filter cover plate |
| CN106535547A (en) * | 2016-12-07 | 2017-03-22 | 上海华章信息科技有限公司 | Mounting structure of circuit board |
| CN107732390A (en) * | 2017-10-20 | 2018-02-23 | 中电科技集团重庆声光电有限公司 | A kind of electromagnetism hybrid coupled cavity body filter |
| CN115275556A (en) * | 2022-08-17 | 2022-11-01 | 昆山立讯射频科技有限公司 | Resonance rod and radio frequency filter |
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| WO2015192481A1 (en) * | 2014-06-17 | 2015-12-23 | 中兴通讯股份有限公司 | Filter cover plate, filter and machining method of filter cover plate |
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| CN106535547A (en) * | 2016-12-07 | 2017-03-22 | 上海华章信息科技有限公司 | Mounting structure of circuit board |
| CN107732390A (en) * | 2017-10-20 | 2018-02-23 | 中电科技集团重庆声光电有限公司 | A kind of electromagnetism hybrid coupled cavity body filter |
| CN115275556A (en) * | 2022-08-17 | 2022-11-01 | 昆山立讯射频科技有限公司 | Resonance rod and radio frequency filter |
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| CN102544655B (en) | 2014-07-30 |
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Effective date of registration: 20180727 Address after: 233400 Huaiyuan County Economic Development Zone, Bengbu, Anhui Patentee after: Anhui Dafu Electromechanical Technology Co., Ltd. Address before: 518104 Floors 101, 2 and A4 of A1, A2, A3 of Shajing Street, Shajing Street, Shajing Road, Shajing Industry Co., Ltd. No. 3 Industrial Zone, Shenzhen City, Guangdong Province Patentee before: Shenzhen Tat Fook Technology Co., Ltd. |