CN103794840A - Cavity filter - Google Patents
Cavity filter Download PDFInfo
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- CN103794840A CN103794840A CN201110459127.6A CN201110459127A CN103794840A CN 103794840 A CN103794840 A CN 103794840A CN 201110459127 A CN201110459127 A CN 201110459127A CN 103794840 A CN103794840 A CN 103794840A
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- cavity
- cover board
- filter
- seal ring
- elastic seal
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Abstract
The invention relates to the communication field and particularly relates to a cavity filter. The cavity filter comprises a cavity, a filter cover plate used for sealing the cavity to form a resonant cavity and a sealing cover plate used for sealing the cavity and the filter cover plate, and further comprises an elastic sealing ring, wherein the elastic sealing ring is limited in a space commonly formed by the cavity, a side wall of the filter cover plate and the sealing cover plate. According to the cavity filter, through the space commonly formed by the cavity, the side wall of the filter cover plate and the sealing cover plate, compared with a traditional mode of forming a sealing groove on a side wall of a cavity, the relatively large cavity space and a relatively good sealing effect can be realized.
Description
Technical field
The present invention relates to the communications field, relate in particular to a kind of cavity body filter.
Background technology
Radio-frequency devices provider is in filter product at present, filter mainly comprises cavity, the seal cover board of the filter cover board of this cavity of capping and capping cavity and filter cover board, seal cover board is positioned at outside filter cover board, seal groove is set simultaneously on cavity wall, sealing ring is positioned in sealing groove, seal cover board is fastened on sealing groove compresses seal to realize the sealing of filter cavity, concrete hermetically-sealed construction as shown in Figure 1, but such structure mainly contains following shortcoming: on cavity wall, need larger width for arranging sealing ring, in the time that the size of filter limits, easily cause filter cloth cavity space to diminish, need compression seal space as cloth cavity space.
In summary, obviously there is inconvenience and defect in existing cavity body filter in actual use, so be necessary to be improved.
Summary of the invention
In view of this, the invention provides a kind of cavity body filter, with respect to conventional seals structure, it,, in the time guaranteeing larger cloth cavity space, can realize good sealing effectiveness.
To achieve these goals, the invention provides a kind of cavity body filter, comprising:
Cavity;
Filter cover board, cavity forms resonant cavity described in capping;
Seal cover board, cavity and described filter cover board described in capping;
It is characterized in that, described cavity body filter also comprises elastic seal ring, and described elastic seal ring is limited in the sidewall and the common space forming of described seal cover board of described cavity, described filter cover board.
According to cavity body filter of the present invention, the cross section of described elastic seal ring is triangle, circle or rectangle.
According to cavity body filter of the present invention, the sidewall of described filter cover board is provided with the limiting structure for elastic seal ring described in lock ring;
The inward flange of described seal cover board is provided with the pressing structure for pressing described elastic seal ring, and described pressing structure is corresponding with the limiting structure of described filter cover board;
The upper surface of described limiting structure, pressing structure and described cavity forms the space of the described elastic seal ring of restriction.
According to cavity body filter of the present invention, described limiting structure and described pressing structure are chamfering, arcwall face or step.
According to cavity body filter of the present invention, the sidewall of described filter cavity is provided with ledge structure; The ledge structure of described filter cavity body sidewall and described filter cover board form seal groove, and described elastic seal ring is suppressed in described seal groove by seal cover board.
According to cavity body filter of the present invention, in described elastic seal ring, the girth on edge is less than the girth of described filter cover board, and elastic seal ring and described filter cover board adaptation.
According to cavity body filter of the present invention, the area of section of described seal groove is more than or equal to the area of section of described sealing ring.
Cavity body filter provided by the invention, by sealing ring being limited between the sidewall of cavity, filter cover board and seal cover board in the common space forming, on cavity wall, form the mode of seal groove with respect to tradition, it,, guaranteeing the larger cloth cavity space while, can realize good sealing effectiveness.
Accompanying drawing explanation
Fig. 1 is the filter sealed structural representation of prior art;
Fig. 2 is the partial cross section figure of the fit structure of cavity, filter cover board and elastic seal ring in cavity body filter the first embodiment of the present invention;
Fig. 3 is the partial cross section figure of the fit structure of cavity, filter cover board, seal cover board and elastic seal ring in cavity body filter the first embodiment of the present invention;
Fig. 4 is the partial cross section figure of the fit structure of cavity, filter cover board and elastic seal ring in cavity body filter the second embodiment of the present invention;
Fig. 5 is the partial cross section figure of the fit structure of cavity, filter cover board, seal cover board and elastic seal ring in cavity body filter the second embodiment of the present invention;
Fig. 6 is the partial cross section figure of the fit structure of cavity, filter cover board, seal cover board and elastic seal ring in cavity body filter of the present invention the 3rd embodiment;
Fig. 7 is the partial cross section figure of the fit structure of cavity, filter cover board and elastic seal ring in cavity body filter of the present invention the 4th embodiment;
Fig. 8 is the partial cross section figure of the fit structure of cavity, filter cover board, seal cover board and elastic seal ring in cavity body filter of the present invention the 4th embodiment;
Fig. 9 is the part three-dimensional structure diagram of cavity in cavity body filter of the present invention the 4th embodiment
Figure 10 is the part three-dimensional structure diagram that in cavity body filter of the present invention the 4th embodiment, cavity and filter cover board form seal groove;
Figure 11 is the partial cross section figure of the fit structure of cavity, filter cover board and elastic seal ring in cavity body filter of the present invention the 5th embodiment;
Figure 12 is the partial cross section figure of the fit structure of cavity, filter cover board, seal cover board and elastic seal ring in cavity body filter of the present invention the 5th embodiment.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
As shown in Fig. 2～Fig. 8, a kind of cavity body filter 100 of the present invention, comprises cavity 10, filter cover board 20 and seal cover board 30, and filter cover board 20 capping cavitys 10 form resonant cavity, and seal cover board 30 capping cavitys 10 and filter cover board 20 are to realize sealing.Wherein, cavity body filter 100 also comprises elastic seal ring 40, and elastic seal ring 40 is limited in the sidewall and the common space forming of seal cover board 30 of cavity 10, filter cover board 20.
The present invention is by being limited in elastic seal ring 40 common formation in space between sidewall, filter cover board 20 and the seal cover board 30 of cavity 10, with respect to the existing mode that only forms seal groove on cavity wall, it,, in the time guaranteeing larger cloth cavity space, can realize good sealing effectiveness.
Preferably, the cross section of this elastic seal ring 40 can be triangle, circle or rectangle, and obviously the cross sectional shape of elastic seal ring 40 is not limited to the situation that the above embodiment of the present invention provides, and can be also other shapes.The girth on elastic seal ring 40 interior edges is slightly less than the girth of filter cover board 20, and elastic seal ring 40 and filter cover board 20 adaptations, thereby can make elastic seal ring 40 lock rings on filter cover board 20.
According to the first embodiment of the present invention, as shown in Figures 2 and 3, the sidewall of filter cover board 20 is provided with limiting structure 21, elastic seal ring 40 passes through these limiting structure 21 lock rings in the sidewall of filter cover board 20, seal cover board 30 is provided with the pressing structure 31 for pressing elastic seal ring 40, this pressing structure 31 is corresponding with limiting structure 21, and the upper surface of limiting structure 21, pressing structure 31 and cavity 10 forms the space of restriction elastic seal ring 40, the sealed cover plate 30 compacting distortion of sealing ring 40 realize the sealing to cavity 10.In the present embodiment, as shown in Figures 2 and 3, the cross section of elastic seal ring 40 is circular, when after seal cover board 30 cappings, elastic seal ring 40 be out of shape and with pressing structure 31 close contacts of cavity 10 upper surfaces and seal cover board 30, to reach the sealing effectiveness to cavity 10.In Fig. 2 and Fig. 3, pressing structure 31 is chamfering with limiting structure 21.
While assembling, first filter cover board 20 is assemblied on cavity 10, then elastic seal ring 40 is enclosed within on the limiting structure 21 of filter cover board 20, then seal cover board 30 is fastened on cavity 10 and filter cover board 20.Wherein, because elastic packing snare 40 is at filter cover board 20 peripheries, the girth of elastic seal ring 40 is slightly less than the girth of filter cover board 20, makes elastic seal ring 40 energy lock rings on filter cover board 20, is convenient to the assembling of seal cover board 30.Meanwhile, the pressing structure 31 of seal cover board 30 is more convenient to elastic seal ring 40 and is imported, when seal cover board 30 is depressed, elastic seal ring 40 is limited to seal cover board 30, in cavity 10 and the common space forming of filter cover board 20, there is deformation and fit with three in elastic seal ring 40, realizes sealing.
According to a second embodiment of the present invention, as shown in Figure 4 and Figure 5, its filter construction and the first embodiment are basic identical, and different is that limiting structure 21 is step.
A third embodiment in accordance with the invention, as shown in Figure 6, its filter construction and the first embodiment are basic identical, different is, pressing structure 31 is arcwall face, and the deformation extent of elastic seal ring 40 is less, the basic circle that keeps, but elastic seal ring 40 still with pressing structure 31 close contacts of cavity 10 upper surfaces and seal cover board 30, to guarantee sealing effectiveness.
Can find out in conjunction with above-mentioned three embodiment, the structure of limiting structure 21 and pressing structure 31 can be chamfering, step or arcwall face, and three kinds of forms that are obviously not limited to enumerate can be also other shapes.
A fourth embodiment in accordance with the invention, as shown in Fig. 7～Figure 10, filter cavity 10 is provided with ledge structure 11, this ledge structure 11 and the common seal groove 50 that forms of filter cover board 20, elastic seal ring 40 is suppressed in seal groove 50 by seal cover board 30.In the present embodiment, the cross section of elastic seal ring 40 is circular, when after seal cover board 30 cappings, elastic seal ring 40 be out of shape and with cavity 10 upper surfaces and seal cover board 30 close contacts, to reach the sealing effectiveness to cavity 10.The girth on elastic seal ring 40 interior edges is slightly less than the girth of filter cover board 20, and elastic seal ring 40 and filter cover board 20 adaptations, thereby can make elastic seal ring 40 lock rings on filter cover board 20.
While assembling, first filter cover board 20 is assemblied on cavity 10, then elastic seal ring 40 is enclosed within to the seal groove 50 that filter cover board 20 and the ledge structure 11 of cavity 10 form, then seal cover board 30 is fastened on cavity 10 and filter cover board 20.Wherein, because elastic packing snare 40 is at filter cover board 20 peripheries, the girth of elastic seal ring 40 is slightly less than the girth of filter cover board 20, makes elastic seal ring 40 energy lock rings on filter cover board 20, is convenient to the assembling of seal cover board 30.Meanwhile, when seal cover board 30 is depressed, elastic seal ring 40 is limited in seal groove 50, and elastic seal ring 40 deformation occurs and fits with cavity 10, filter cover board 20 and seal cover board 30, realizes sealing.Preferably, it is roughly equal that seal groove cuts the area of section of 50 area and elastic seal ring 40, and the former can be bigger or suitable.
According to a fifth embodiment of the invention, as shown in Figure 11 and Figure 12, its filter construction and the 4th embodiment are basic identical, different is, the ledge structure 11 shape differences of filter cavity 10, this ledge structure 11 comprises two steps 111,112, and step 111 is for shelving filter cover board 20, and step 112 is for forming seal groove 50 with filter cover board 20.
In sum, cavity body filter provided by the invention, by the common seal groove that forms between cavity wall, described filter cover board and described seal cover board, sealing ring is arranged in sealing groove, on cavity wall, form the mode of seal groove with respect to tradition, it,, in the time guaranteeing larger cloth cavity space, can realize good sealing effectiveness.
Applied specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment is just for helping to understand method of the present invention and core concept thereof; , for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention meanwhile.
Claims (7)
1. a cavity body filter, comprising:
Cavity;
Filter cover board, cavity forms resonant cavity described in capping;
Seal cover board, cavity and described filter cover board described in capping;
It is characterized in that, described cavity body filter also comprises elastic seal ring, and described elastic seal ring is limited in the sidewall and the common space forming of described seal cover board of described cavity, described filter cover board.
2. cavity body filter according to claim 1, is characterized in that, the cross section of described elastic seal ring is triangle, circle or rectangle.
3. according to the cavity body filter described in claim 1 to 2, it is characterized in that, the sidewall of described filter cover board is provided with the limiting structure for elastic seal ring described in lock ring;
The inward flange of described seal cover board is provided with the pressing structure for pressing described elastic seal ring, and described pressing structure is corresponding with the limiting structure of described filter cover board;
The upper surface of described limiting structure, pressing structure and described cavity forms the space of the described elastic seal ring of restriction.
4. cavity body filter according to claim 3, is characterized in that, described limiting structure and described pressing structure are chamfering, arcwall face or step.
5. cavity body filter according to claim 1, is characterized in that, the sidewall of described filter cavity is provided with ledge structure;
The ledge structure of described filter cavity body sidewall and described filter cover board form seal groove, and described elastic seal ring is suppressed in described seal groove by seal cover board.
6. cavity body filter according to claim 1, is characterized in that, in described elastic seal ring, the girth on edge is less than the girth of described filter cover board, and elastic seal ring and described filter cover board adaptation.
7. cavity body filter according to claim 5, is characterized in that, the area of section of described seal groove is more than or equal to the area of section of described sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110459127.6A CN103794840A (en) | 2011-12-30 | 2011-12-30 | Cavity filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110459127.6A CN103794840A (en) | 2011-12-30 | 2011-12-30 | Cavity filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103794840A true CN103794840A (en) | 2014-05-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110459127.6A Pending CN103794840A (en) | 2011-12-30 | 2011-12-30 | Cavity filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103794840A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106910967A (en) * | 2017-03-23 | 2017-06-30 | 广东通宇通讯股份有限公司 | Radio-frequency devices and its both-end short circuit dielectric filter |
| CN108336457A (en) * | 2017-01-17 | 2018-07-27 | 凯镭思通讯设备（上海）有限公司 | A kind of waterproof cover for filter |
| CN111613855A (en) * | 2019-02-25 | 2020-09-01 | 上海诺基亚贝尔股份有限公司 | Package for electronic assembly |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1825698A (en) * | 2005-02-24 | 2006-08-30 | 三美电机株式会社 | Antenna device and antenna water-proof structure |
| CN2840341Y (en) * | 2005-06-30 | 2006-11-22 | 杭州紫光网络技术有限公司 | Cavity body circuit synthesizer with seal cover |
| CN201946722U (en) * | 2010-12-31 | 2011-08-24 | 深圳市大富科技股份有限公司 | Radio frequency communication device |
| CN202025838U (en) * | 2011-01-26 | 2011-11-02 | 合肥威科电子技术有限公司 | Water-proof structure of passive device used for communication |
| CN202454697U (en) * | 2011-12-30 | 2012-09-26 | 深圳市大富科技股份有限公司 | Cavity filter |
-
2011
- 2011-12-30 CN CN201110459127.6A patent/CN103794840A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1825698A (en) * | 2005-02-24 | 2006-08-30 | 三美电机株式会社 | Antenna device and antenna water-proof structure |
| CN2840341Y (en) * | 2005-06-30 | 2006-11-22 | 杭州紫光网络技术有限公司 | Cavity body circuit synthesizer with seal cover |
| CN201946722U (en) * | 2010-12-31 | 2011-08-24 | 深圳市大富科技股份有限公司 | Radio frequency communication device |
| CN202025838U (en) * | 2011-01-26 | 2011-11-02 | 合肥威科电子技术有限公司 | Water-proof structure of passive device used for communication |
| CN202454697U (en) * | 2011-12-30 | 2012-09-26 | 深圳市大富科技股份有限公司 | Cavity filter |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108336457A (en) * | 2017-01-17 | 2018-07-27 | 凯镭思通讯设备（上海）有限公司 | A kind of waterproof cover for filter |
| CN106910967A (en) * | 2017-03-23 | 2017-06-30 | 广东通宇通讯股份有限公司 | Radio-frequency devices and its both-end short circuit dielectric filter |
| CN106910967B (en) * | 2017-03-23 | 2020-10-16 | 广东通宇通讯股份有限公司 | Radio frequency device and double-end short-circuit dielectric filter thereof |
| CN111613855A (en) * | 2019-02-25 | 2020-09-01 | 上海诺基亚贝尔股份有限公司 | Package for electronic assembly |
| CN111613855B (en) * | 2019-02-25 | 2021-10-08 | 上海诺基亚贝尔股份有限公司 | Packaging assembly for electronic assembly |
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Application publication date: 20140514 |