CN205609714U - Cavity filter cover plate - Google Patents
Cavity filter cover plate Download PDFInfo
- Publication number
- CN205609714U CN205609714U CN201520911773.5U CN201520911773U CN205609714U CN 205609714 U CN205609714 U CN 205609714U CN 201520911773 U CN201520911773 U CN 201520911773U CN 205609714 U CN205609714 U CN 205609714U
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- cover board
- cavity
- boss
- tuning
- filter
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Abstract
The utility model provides a cavity filter cover plate, the apron is used for the cavity of sealed cavity body wave filter, and the apron is including the apron body, and the apron body adopts the aluminum product, the apron is equipped with harmonious screw hole on the body, harmonious screw hole that specifically be extending to the cavity direction with boss apron body integrated into one piece, the mid portion cavity of boss, the boss is inside follows its axis direction and is equipped with the screw hole, the boss is inside still to be equipped with the tuned window that meets with the screw hole along its axis direction, and this tuned window more is close the cavity of wave filter for the screw hole, and the tuned window is inside to be equipped with annular flexible sheet metal, and the diameter of sheetmetal is less than the diameter of the harmonious auto -lock screw of wave filter, the utility model discloses compromise cost and tuning performance ability, save the resource.
Description
Technical field
The present invention relates to signal processing field, particularly relate to a kind of cavity filter cover board.
Background technology
At present, the signal processing of cavity body filter is generally completed by the tuning Self-locking screw on filter cover board, the problem that problem is signal intermodulation that tuning screw processes in general, specifically refers to two different frequency signals, superposition in a certain system and the signal of new frequency that produces.
The most common wave filter includes cavity, the parts such as cover plate and tuning Self-locking screw, filter cover board the most mostly uses the mode at sheet material upper punch pressing hole-forming tubular drill to process tuned window, it is high that the mode of one side punching press processes screwed hole defect rate, the highest manufacturing cost, on the other hand the tuned window stamped out also needs additionally mounted upper tuning swivel nut, tuning swivel nut uses welding, press, the mode such as gluing is fixed on tuned window, the installation of tuning swivel nut not only needs cost of labor and processing cost, simultaneously, this tuning swivel nut additionally installed additional on tuned window is the most unstable, loosen through being easy for after a period of time producing, and the also also out-of-flatness of the interface of tuned window and tuning swivel nut, the tuning effect that final impact is actual.
Summary of the invention
It is desirable to provide a kind of cavity filter cover board.
For solving above-mentioned technical problem, the present invention is by the following technical solutions, a kind of cavity filter cover board, described cover plate is for covering the cavity of cavity body filter, cover plate includes cover board body, cover board body uses aluminum material, described cover board body is provided with tuning screwed hole, tuning screwed hole is specially the boss integrated with cover board body extended to cavity direction, the mid portion hollow of boss, it is provided with screwed hole along its axis direction inside boss, it is additionally provided with the tuned window connected with screwed hole along its axis direction inside described boss, this tuned window relative to screwed hole closer to the cavity of wave filter, cyclic spring sheet metal it is provided with inside tuned window, the diameter of sheet metal is less than the diameter of filter tuner Self-locking screw.
As preferably, the thickness of described cover board body is 0.8-3.5mm.
As preferably, the height of described boss is 1-20mm.
As preferably, the swivel nut that described boss internal thread holes is formed is suitable for the tuning Self-locking screw of M4-M10 specification.
As preferably, described cyclic spring sheet metal is cyclic spring copper sheet.
As preferably, described cyclic spring sheet metal contacts with the tuning Self-locking screw of wave filter.
As preferably, described cover board body is additionally provided with cover screw hole.
Relative to traditional filter cover board, the present invention all uses aluminium to be used as the material of cover board body, on the one hand it is because aluminium relatively cheap, use aluminum to manufacture cover plate and can greatly save material cost, on the other hand the quality of aluminum is softer, processing is got up easily, also save processing cost, actual demand in view of present filter tuning, the specification of tuning Self-locking screw is M4-M10 at present, and accordingly, the aluminum extensibility used due to cover plate is preferable, the thickness of cover plate only need to control at 0.8-3.5mm, cover plate is light and does not affect using effect, save material cost further, the height of boss can also control at 1-20mm, it is sufficient for the use requirement of Self-locking screw；Additionally, the cover plate of the present invention is also provided with tuning the boss of the mid portion hollow integrated with cover board body that screwed hole i.e. extends to cavity direction, and the present invention uses boss to replace the combination of traditional tuned window and tuning swivel nut, it is because processing boss only need to cover board body be stretched, use lathe just can be automatically performed the processing of tuning screwed hole, still further need not overlap operation by stamping out tuned window and fixing tuning swivel nut two, and this tuning screwed hole is by the materials processing of cover board body out, the present invention also will not waste material while saving operation, and integrated boss is the most firm, do not interfere with the effect of tuning；nullIt is additionally provided with the tuned window connected with screwed hole along its axis direction inside boss of the present invention，This tuned window relative to screwed hole closer to the cavity of wave filter，Cyclic spring sheet metal it is provided with inside tuned window，The diameter of sheet metal is less than the diameter of filter tuner Self-locking screw，Electric capacity is formed between inwall and the tuning screw of annular sheet metal，Make to be introduced on cover plate the effect of capacity plate antenna，Reduce the electric current density of tuning screw and cover plate binding site，Reduce the inter-modulated signal level produced because of tuning screw with cover plate loose contact，Improve the intermodulation first-pass yield of cavity body filter，And using the sheet metal of elasticity is to depart from downwards in the front end of screw when screwed hole enters tuning porose area to squeeze elastic sheet metal，Sheet metal can preferably pin Self-locking screw because the effect of elastic force inwardly extrudes，Factor in view of cost Yu efficiency，Further preferably use cyclic spring copper sheet，Because copper on the one hand cost is relatively low，On the other hand there is good elasticity.
Accompanying drawing explanation
Fig. 1 be the present invention be the schematic diagram of embodiment；
Fig. 2 is the schematic diagram that the present invention tunes swivel nut.
In figure: 1, cover board body；2, boss；3, screwed hole；4, tuned window；5, cover screw hole；6, cyclic spring sheet metal.
Detailed description of the invention
Embodiments of the invention are described below in detail, and the example of described embodiment is shown in the drawings, and the most same or similar label represents same or similar element or has the element of same or like function.The embodiment described below with reference to accompanying drawing is exemplary, is only used for explaining the present invention, and is not considered as limiting the invention.
In describing the invention, unless otherwise prescribed and limit, it should be noted that, term " is installed ", " being connected ", " connection " should be interpreted broadly, for example, it may be mechanically connected or electrical connection, it is also possible to be the connection of two element internals, can be to be joined directly together, it is also possible to be indirectly connected to by intermediary.For the ordinary skill in the art, the concrete meaning of above-mentioned term can be understood as the case may be.
Referring to Fig. 1 to Fig. 2, a kind of cavity filter cover board according to embodiments of the present invention is described, described cover plate is for covering the cavity of cavity body filter, cover plate includes cover board body 1, cover board body 1 uses aluminum material, described cover board body 1 is provided with tuning screwed hole, tuning screwed hole is specially the boss integrated with cover board body 12 extended to cavity direction, the mid portion hollow of boss 2, boss 2 is internal is provided with screwed hole 3 along its axis direction, described boss 2 is internal is additionally provided with, along its axis direction, the tuned window 4 connected with screwed hole 3, this tuned window 4 relative to screwed hole 3 closer to the cavity of wave filter, tuned window 4 is internal is provided with cyclic spring sheet metal 6, the diameter of cyclic spring sheet metal 6 is less than the diameter of filter tuner Self-locking screw.
As preferably, the thickness of described cover board body 1 is 0.8-3.5mm.
As preferably, the height of described boss 2 is 1-20mm.
As preferably, the swivel nut that described boss 2 internal thread holes is formed is suitable for the tuning Self-locking screw of M4-M10 specification.
As preferably, described cyclic spring sheet metal 6 is cyclic spring copper sheet.
As preferably, described cyclic spring sheet metal 6 contacts with the tuning Self-locking screw of wave filter.
As preferably, described cover board body 1 is additionally provided with cover screw hole 5.
Relative to traditional filter cover board, the present invention all uses aluminium to be used as the material of cover board body, on the one hand it is because aluminium relatively cheap, use aluminum to manufacture cover plate and can greatly save material cost, on the other hand the quality of aluminum is softer, processing is got up easily, also save processing cost, actual demand in view of present filter tuning, the specification of tuning Self-locking screw is M4-M10 at present, and accordingly, the aluminum extensibility used due to cover plate is preferable, the thickness of cover plate only need to control at 0.8-3.5mm, cover plate is light and does not affect using effect, save material cost further, the height of boss can also control at 1-20mm, it is sufficient for the use requirement of Self-locking screw；Additionally, the cover plate of the present invention is also provided with tuning the boss of the mid portion hollow integrated with cover board body that screwed hole i.e. extends to cavity direction, and the present invention uses boss to replace the combination of traditional tuned window and tuning swivel nut, it is because processing boss only need to cover board body be stretched, use lathe just can be automatically performed the processing of tuning screwed hole, still further need not overlap operation by stamping out tuned window and fixing tuning swivel nut two, and this tuning screwed hole is by the materials processing of cover board body out, the present invention also will not waste material while saving operation, and integrated boss is the most firm, do not interfere with the effect of tuning；nullIt is additionally provided with the tuned window connected with screwed hole along its axis direction inside boss of the present invention，This tuned window relative to screwed hole closer to the cavity of wave filter，Cyclic spring sheet metal it is provided with inside tuned window，The diameter of sheet metal is less than the diameter of filter tuner Self-locking screw，Electric capacity is formed between inwall and the tuning screw of annular sheet metal，Make to be introduced on cover plate the effect of capacity plate antenna，Reduce the electric current density of tuning screw and cover plate binding site，Reduce the inter-modulated signal level produced because of tuning screw with cover plate loose contact，Improve the intermodulation first-pass yield of cavity body filter，And using the sheet metal of elasticity is to depart from downwards in the front end of screw when screwed hole enters tuning porose area to squeeze elastic sheet metal，Sheet metal can preferably pin Self-locking screw because the effect of elastic force inwardly extrudes，Factor in view of cost Yu efficiency，Further preferably use cyclic spring copper sheet，Because copper on the one hand cost is relatively low，On the other hand there is good elasticity.
In the description of this specification, the description of reference term " embodiment ", " example " or " some examples " etc. means that the specific features, structure, material or the feature that combine this embodiment or example description are contained at least one embodiment or the example of the present invention.In this manual, the schematic representation to above-mentioned term is not necessarily referring to identical embodiment or example.And, the specific features of description, structure, material or feature can combine in any one or more embodiments or example in an appropriate manner.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that: these embodiments can carry out in the case of without departing from the principle of the present invention and objective multiple change, revise, replace and modification, the scope of the present invention is limited by claim and equivalent thereof.
Claims (7)
1. a cavity filter cover board, described cover plate is for covering the cavity of cavity body filter, cover plate includes cover board body, it is characterized in that, cover board body uses aluminum material, described cover board body is provided with tuning screwed hole, tuning screwed hole is specially the boss integrated with cover board body extended to cavity direction, the mid portion hollow of boss, it is provided with screwed hole along its axis direction inside boss, it is additionally provided with the tuned window connected with screwed hole along its axis direction inside described boss, this tuned window relative to screwed hole closer to the cavity of wave filter, cyclic spring sheet metal it is provided with inside tuned window, the diameter of sheet metal is less than the diameter of filter tuner Self-locking screw.
Cavity filter cover board the most according to claim 1, it is characterised in that the thickness of described cover board body is 0.8-3.5mm.
Cavity filter cover board the most according to claim 1, it is characterised in that the height of described boss is 1-20mm.
4. according to the cavity filter cover board described in Claims 2 or 3, it is characterised in that the swivel nut that described boss internal thread holes is formed is suitable for the tuning Self-locking screw of M4-M10 specification.
Cavity filter cover board the most according to claim 1, it is characterised in that described cyclic spring sheet metal is cyclic spring copper sheet.
Cavity filter cover board the most according to claim 1 or 5, it is characterised in that described cyclic spring sheet metal contacts with the tuning Self-locking screw of wave filter.
Cavity filter cover board the most according to claim 1, it is characterised in that be additionally provided with cover screw hole on described cover board body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520911773.5U CN205609714U (en) | 2015-11-17 | 2015-11-17 | Cavity filter cover plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520911773.5U CN205609714U (en) | 2015-11-17 | 2015-11-17 | Cavity filter cover plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205609714U true CN205609714U (en) | 2016-09-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520911773.5U Active CN205609714U (en) | 2015-11-17 | 2015-11-17 | Cavity filter cover plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205609714U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105322257A (en) * | 2015-11-17 | 2016-02-10 | 强胜精密机械(苏州)有限公司 | Cover board of cavity filter |
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2015
- 2015-11-17 CN CN201520911773.5U patent/CN205609714U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105322257A (en) * | 2015-11-17 | 2016-02-10 | 强胜精密机械(苏州)有限公司 | Cover board of cavity filter |
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