CN203039056U - Cavity filter - Google Patents
Cavity filter Download PDFInfo
- Publication number
- CN203039056U CN203039056U CN 201220698425 CN201220698425U CN203039056U CN 203039056 U CN203039056 U CN 203039056U CN 201220698425 CN201220698425 CN 201220698425 CN 201220698425 U CN201220698425 U CN 201220698425U CN 203039056 U CN203039056 U CN 203039056U
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- China
- Prior art keywords
- screw
- section
- cover plate
- cavity
- cavity body
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model discloses a cavity filter, comprising a cavity, a cover plate covered on the cavity and a PCB arranged on an upper part of the cover plate. The cavity filter is characterized in that a first screw traversing the PCB and a second screw traversing the cover plate are mounted between the PCB and the cover plate, and the first screw is fixedly connected with the second screw. A connection structure of the cavity filter can be manufactured in a spliced manner, structure optimization is convenient, standardized structural parts are convenient to be manufactured and production efficiency is raised. Under a premise of not affecting product performances, the cavity filter plays a cover-plate fixing effect excellently.
Description
Technical field
The utility model relates to the communications field, is specifically related to a kind of cavity body filter.
Background technology
In the prior art, the fixed form of miscellaneous part has following two kinds in the pcb board in the cavity body filter and the filter.
First kind of fixed form as shown in Figure 1, cavity body filter comprises cavity 101, cover plate 102 and the fixedly guide pillar 103 that extends to pcb board 104 from cavity bottom, fixedly guide pillar 103 is integrated with cavity 101, fixedly guide pillar 103 passes cover plate 102 and extends to pcb board 104 always, with screw pcb board 104 is fixed on fixedly on the guide pillar 103.
Second kind of fixed form comprises cavity 201 as shown in Figure 2, cover plate 202, with the integrated fixedly guide pillar 203 of cover plate, with screw with on the fixing fixedly guide pillars 203 on the cover board of pcb board 204.
In research and practice process to prior art, inventor of the present utility model finds that there is following defective in the fixed form of existing P CB plate.
Fixedly guide pillar and cavity integrated design, its shortcoming has following aspect:
1. fixedly guide pillar only plays the fixedly effect of pcb board, also need take certain space in cavity design screw position, also influences the layout of resonant rod simultaneously;
2. fixedly the height of guide pillar discord is installed the cover plate face on same plane, and adding increases manufacturing procedure man-hour;
This kind fixedly the structure of guide pillar be difficult for the standardization of implementation structure spare, be unfavorable for large-scale processing.
Fixedly guide pillar and cover plate integrated design, its shortcoming has following aspect:
1. fixedly guide pillar and screw fit are used, and when screw lock, can produce a power that makes progress to cover plate, make cover plate deform easily, may cause leaking, and influence properties of product;
2. fixedly guide pillar is set on the cover plate, has increased machining period, reduced production efficiency.
The utility model content
In order to solve pcb board of the prior art the problem that exists is installed, the utility model embodiment provide a solution.
The utility model provides a kind of cavity body filter, comprise the pcb board that cavity, lid are located at the cover plate on the cavity and are located at cover plate top, it is characterized in that, be provided with first screw that passes described pcb board and second screw that passes described cover plate between described pcb board and the described cover plate, described first screw is fixedlyed connected with described second screw.
Further, described second screw comprises first section and second section, and described first section diameter is greater than described second section diameter, described first section between described cover plate and described pcb board.
Further, first section of described first screw and described second screw is threaded, and first section end of described second screw is provided with the screwed hole with described first screw fit.
Further, first section interference fit of described first screw and described second screw, first section end of described second screw is provided with the interference hole with described first screw fit.
Further, described cover plate is provided with for second section via hole that passes of second screw, and first section bottom surface of described second screw compresses described cover plate.
Further, first of described second screw section outer surface be provided with mill flat.
Further, first of described second screw section is outer-hexagonal shape.
Further, second of described second screw section isolation bar or sidewall thread of passing in cover plate and the cavity is connected.
Further, second of described second screw section isolation bar or sidewall interference fit of passing in cover plate and the cavity.
The utility model provides cavity body filter, second screw of employing special construction is realized the function of guide pillar of the prior art, and play the effect of fastening cover plate simultaneously, but syndeton split production of the present utility model, conveniently optimize structure, and conveniently make standardized structural spare, enhance productivity; And under the prerequisite that does not influence properties of product, well play the effect of securing cover plate.
Description of drawings
In order to be illustrated more clearly in the technical scheme among the utility model embodiment, the accompanying drawing of required use is done to introduce simply in will describing embodiment below, apparently, accompanying drawing in describing below only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the generalized section of a kind of cavity body filter in the prior art;
Fig. 2 is the generalized section of another kind of cavity body filter in the prior art;
Fig. 3 is the generalized section of a kind of cavity body filter among the utility model embodiment;
Fig. 4 is the installation explosive view of Fig. 3.
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 obtains under the creative work prerequisite, all belong to the scope of the utility model protection.
Embodiment one,
A kind of cavity body filter, as shown in Figure 3 and Figure 4, comprise the pcb board 303 that cavity 301, lid are located at the cover plate 302 on the cavity and are located at cover plate top, second screw, 305, the first screws 304 that are provided with first screw 304 that passes pcb board 303 between pcb board 303 and the cover plate 302 and pass cover plate 302 are fixedlyed connected with second screw 305.
Concrete, second screw 305 comprises first section 311 and second sections 312, the first sections 311 diameter greater than second section 312 diameter, and first section 311 between cover plate 302 and pcb board 303.First section 311 of second screw 305 substituted of the prior art and cover plate or with the function of the integrated guide pillar of cavity, guide pillar changed into a kind of screw of special construction realizes, can split production, avoided the integrated defective of guide pillar in the prior art.
More than cavity body filter that the utility model embodiment is provided be described in detail, wherein:
The utility model provides cavity body filter, second screw of employing special construction is realized the function of guide pillar of the prior art, and play the effect of fastening cover plate simultaneously, but syndeton split production of the present utility model, conveniently optimize structure, and conveniently make standardized structural spare, enhance productivity; And under the prerequisite that does not influence properties of product, well play the effect of securing cover plate.
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 (9)
1. cavity body filter, it is characterized in that, comprise the pcb board that cavity, lid are located at the cover plate on the cavity and are located at cover plate top, it is characterized in that, be provided with first screw that passes described pcb board and second screw that passes described cover plate between described pcb board and the described cover plate, described first screw is fixedlyed connected with described second screw.
2. cavity body filter according to claim 1 is characterized in that, described second screw comprises first section and second section, and described first section diameter is greater than described second section diameter, described first section between described cover plate and described pcb board.
3. cavity body filter according to claim 2 is characterized in that, first section of described first screw and described second screw is threaded, and first section end of described second screw is provided with the screwed hole with described first screw fit.
4. cavity body filter according to claim 2 is characterized in that, first section interference fit of described first screw and described second screw, and first section end of described second screw is provided with the interference hole with described first screw fit.
5. according to claim 3 or 4 described cavity body filters, it is characterized in that described cover plate is provided with for second section via hole that passes of second screw, first section bottom surface of described second screw compresses described cover plate.
6. according to any described cavity body filter of claim 1 ~ 4, it is characterized in that, first section outer surface of described second screw be provided with mill flat.
7. cavity body filter according to claim 6 is characterized in that, first section of described second screw is outer-hexagonal shape.
8. according to any described cavity body filter of claim 1 ~ 4, it is characterized in that second section of described second screw passes cover plate and be connected with isolation bar or sidewall thread in the cavity.
9. according to any described cavity body filter of claim 1 ~ 4, it is characterized in that second section isolation bar or sidewall interference fit of passing in cover plate and the cavity of described second screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220698425 CN203039056U (en) | 2012-12-17 | 2012-12-17 | Cavity filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220698425 CN203039056U (en) | 2012-12-17 | 2012-12-17 | Cavity filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203039056U true CN203039056U (en) | 2013-07-03 |
Family
ID=48691147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220698425 Expired - Lifetime CN203039056U (en) | 2012-12-17 | 2012-12-17 | Cavity filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203039056U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104377419A (en) * | 2013-08-14 | 2015-02-25 | 台扬科技股份有限公司 | Microwave resonant cavity |
-
2012
- 2012-12-17 CN CN 201220698425 patent/CN203039056U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104377419A (en) * | 2013-08-14 | 2015-02-25 | 台扬科技股份有限公司 | Microwave resonant cavity |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130703 |
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| CX01 | Expiry of patent term |