CN106356595A - Cavity filter - Google Patents
Cavity filter Download PDFInfo
- Publication number
- CN106356595A CN106356595A CN201610830375.XA CN201610830375A CN106356595A CN 106356595 A CN106356595 A CN 106356595A CN 201610830375 A CN201610830375 A CN 201610830375A CN 106356595 A CN106356595 A CN 106356595A
- Authority
- CN
- China
- Prior art keywords
- cover plate
- screw rod
- cavity
- body filter
- cavity body
- Prior art date
- 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.)
- Granted
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/20—Frequency-selective devices, e.g. filters
- H01P1/207—Hollow waveguide filters
Abstract
The invention provides a cavity filter. The cavity filter comprises a resonance rod, a cover plate and a screw component arranged on the cover plate, wherein the top of the resonance rod is of a hollow conical shape and comprises a conical cavity and a flange extending a certain length along the peripheral edge of one side, facing the cover plate, of the conical cavity, and a first capacitance area is formed between the flange and the cover plate; the lateral side of one side, facing the resonance rod, of the cover plate is provided with a protrusion, and a second capacitance area is formed between the outer wall of the protrusion and the inner wall of the conical cavity; the screw component comprises an inner riveting nut arranged in the protrusion and a screw matched with the inner riveting nut; when the inner riveting nut is locked with the screw, the screw is embedded into the cover plate. By the cavity filter, the height of the cavity filter can be lowered, power capacity can be increased, and Q value indexes can be improved.
Description
Technical field
The present invention relates to communications industry electrical appliance Element Technology field, more particularly, to a kind of cavity body filter.
Background technology
As shown in figure 1, cavity body filter includes resonant rod 1/, cover plate 2/With and be arranged at cover plate 2/On screw arbor assembly
3/；Wherein, resonant rod 1/Top be provided with circular groove, extend a flange 11 from this circular groove top perimeter edge/, should
Flange 11/With cover plate 2/Between formed capacitor regions, due to the internal cavity 12 by circular groove/Diameter limits so that resonant rod
1/With cover plate 2/Between formed capacitor regions overlapping area limited, the power capacity leading to cavity body filter is relatively small, sharp edge
Easily strike sparks, and q value is also relatively low；And screw arbor assembly 3/Using conventional external nut and nut lock compact form screw rod, but this knot
In structure, screw rod can exceed cover plate 2/The avoidance height of horizontal plane 6mm, leads to cavity body filter highly to become greatly, takies larger space
Capacity, even if screw arbor assembly 3/Using interior riveting nut and interior riveting self locking type screw rod although cavity body filter occupancy can be saved
Spatial content, but due in cylinder riveting nut go deep into the internal cavity 12 of circular groove/So that electrical specifications significantly under
Adjust.
Therefore, need a kind of cavity body filter badly, oneself height can be reduced, and power capacity can be improved, improve q value and refer to
Mark.
Content of the invention
Embodiment of the present invention technical problem to be solved is, provides a kind of cavity body filter, can reduce from height
Degree, improves power capacity, improves q value index.
In order to solve above-mentioned technical problem, embodiments provide a kind of cavity body filter, described cavity body filter
Including resonant rod, cover plate and the screw arbor assembly being arranged on described cover plate；Wherein,
The top of described resonant rod is in hollow taper, including conical cavity with along described conical cavity towards described cover plate side week
Long edge extends the flange of certain length, and forms the first capacitor regions between described flange and described cover plate；
Described cover plate is provided with a projection towards the side of described resonant rod side, and described raised outer wall is empty with described taper
Form the second capacitor regions between the inwall in chamber；
Described screw arbor assembly includes being arranged at the interior riveting nut of described lobed interior and the spiral shell matching with described interior riveting nut
Bar；Wherein, after described interior riveting nut is locked with described screw rod phase, described screw rod is embedded in described cover plate.
Wherein, described projection is arranged on the central axis of described resonant rod, and described projection is tapered, its conical surface gradient
Consistent with the conical surface gradient that described conical cavity inwall is formed.
Wherein, described raised with described cover plate integrated punching molding.
Wherein, when described interior riveting nut is to press tapered cup nut, described screw rod be thread adjacent two-by-two between alternately mistake
Open the axial force self-locking screw rod of arrangement.
Wherein, when described interior riveting nut is to press closing in radial force self-locking nut, described screw rod is normally arranged for thread
Screw rod.
Implement the embodiment of the present invention, have the advantages that
In embodiments of the present invention, due to forming the first capacitor regions between the flange of resonant rod and cover plate, and resonant rod
Conical cavity inwall also forms the second capacitor regions and the projection of cover plate between, thus the power that improve cavity body filter holds
Amount, improves the q value index of cavity body filter, simultaneously because after the interior riveting nut in screw arbor assembly is locked with screw rod phase, screw rod
Being embedded in cover plate, thus reducing the height of cavity body filter, saving the capacity that takes up room.
Brief description
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
Have technology description in required use accompanying drawing be briefly described it should be apparent that, drawings in the following description be only this
Some embodiments of invention, for those of ordinary skill in the art, without having to pay creative labor, according to
These accompanying drawings obtain other accompanying drawings and still fall within scope of the invention.
Fig. 1 is the lateral partial structurtes sectional view of cavity body filter in prior art；
Fig. 2 is an a kind of lateral partial structurtes sectional view of cavity body filter provided in an embodiment of the present invention；
Fig. 3 is a kind of another lateral partial structurtes sectional view of cavity body filter provided in an embodiment of the present invention.
Specific embodiment
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing, the present invention is made into one
Step ground describes in detail.
As shown in Fig. 2 being in the embodiment of the present invention, a kind of cavity body filter providing, this cavity body filter includes resonance
Bar 1, cover plate 2 and the screw arbor assembly 3 being arranged on cover plate 2；Wherein,
The top of resonant rod 1 is in hollow taper, including conical cavity 11 with along conical cavity 11 towards cover plate 2 side perimeter edge
Extend the flange 12 of certain length, and between flange 12 and cover plate 2, form the first capacitor regions；
Cover plate 2 is provided with a projection 21, and the inwall of raised 21 outer wall and conical cavity 11 towards the side of resonant rod 1 side
Between form the second capacitor regions；
Screw arbor assembly 3 includes being arranged at the interior riveting nut within raised 21 and the screw rod matching with interior riveting nut；Wherein, when
After interior riveting nut is locked with screw rod phase, screw rod is embedded in cover plate 2.
It should be noted that the setting of top-direction is with resonant rod 1 and cover plate 2 as object of reference, by resonant rod 1 near cover plate
2 sides as top, in the same manner, using resonant rod 1 away from cover plate 2 side as bottom.
Top due to resonant rod 1 is in hollow taper, has the conical surface excessively, therefore compares with conventional resonance bar, the present invention
Resonant rod 1 in embodiment is more suitable for Sheet Metal Forming Technology processing, reduces production cost.In one embodiment, resonant rod 1 top
The top diameter (i.e. towards the diameter of cover plate 2 side) of conical cavity 11 be greater than this conical cavity 11 base diameter (i.e. away from
The diameter of cover plate 2 side).
It is understood that cavity body filter of the prior art often only exists the capacitive region that flange is formed with cover plate
Domain, and the cavity body filter during the present invention is implemented not only includes capacitor regions (i.e. flange 12 that above-mentioned flange is formed with cover plate
Form the first capacitor regions and cover plate 2 between), also include the conical cavity 11 on raised 21 outer wall and resonant rod 1 on cover plate 2
Forming the second capacitor regions between inwall, therefore improve the power capacity of cavity body filter so that puncturing cavity body filter sky
Gas-bearing formation needs higher voltage, simultaneously because conical cavity 11 inwall using the conical surface without there is sharp side as right angle
Edge, thus reducing discharge effect impact, improves the q value index of cavity body filter,
Meanwhile, after the locking of the interior riveting nut in screw arbor assembly 3 and screw rod phase, screw rod is embedded in cover plate 2 so that the top of screw rod
End face is less than or equal to the top end face of cover plate 2, thus reducing the height of cavity body filter, saving cavity body filter and occupying
Spatial content.
In order to reach the purpose increasing the distribution of capacitor regions uniform electric field, therefore raised 21 are arranged at the center of resonant rod 1
On axis, and projection 21 is tapered, and the conical surface gradient that its conical surface gradient is formed with conical cavity 12 inwall is consistent, such that it is able to
Accomplish that the air line distance of flange 12 to cover plate 2 is equal or close with the air line distance of raised 21 outer walls to conical cavity 12 inwall,
Reach the purpose increasing the distribution of capacitor regions uniform electric field.
In embodiments of the present invention, raised 21 can be fixedly mounted on cover plate 2, or when raised 21 height is relatively low
When, raised 21 with cover plate 2 integrated punching molding.
In embodiments of the present invention, when the interior riveting nut of screw arbor assembly 3 is to press tapered cup nut, screw rod is that thread two is biphase
Being alternately arranged axial force self-locking screw rod (as shown in Figure 2) of arrangement or interior riveting nut between neighbour is to press closing in radially
During power self-locking nut, screw rod is the screw rod (as shown in Figure 3) of the normal arrangement of thread.No matter which kind of form combination, screw rod top surface is equal
Without departing from the top end face of cover plate 2, thus on the basis of the processing of existing mature and reliable and testing and measuring technology, reducing cavity
The purpose of wave filter height.
Implement the embodiment of the present invention, have the advantages that
In embodiments of the present invention, due to forming the first capacitor regions between the flange of resonant rod and cover plate, and resonant rod
Conical cavity inwall also forms the second capacitor regions and the projection of cover plate between, thus the power that improve cavity body filter holds
Amount, improves the q value index of cavity body filter, simultaneously because after the interior riveting nut in screw arbor assembly is locked with screw rod phase, screw rod
Being embedded in cover plate, thus reducing the height of cavity body filter, saving the capacity that takes up room.
Above disclosed be only present pre-ferred embodiments, certainly the right model of the present invention can not be limited with this
Enclose, the equivalent variations therefore made according to the claims in the present invention, still belong to the scope that the present invention is covered.
Claims (5)
1. a kind of cavity body filter is it is characterised in that described cavity body filter includes resonant rod (1), cover plate (2) and is arranged at institute
State the screw arbor assembly (3) on cover plate (2)；Wherein,
The top of described resonant rod (1) is in hollow taper, including conical cavity (11) with along described conical cavity (11) towards institute
State the flange (12) that cover plate (2) side perimeter edge extends certain length, and between described flange (12) and described cover plate (2)
Form the first capacitor regions；
Described cover plate (2) is provided with one raised (21) towards the side of described resonant rod (1) side, and described projection (21) is outer
Form the second capacitor regions between the inwall of wall and described conical cavity (11)；
Described screw arbor assembly (3) is included being arranged at the internal interior riveting nut of described projection (21) and is matched with described interior riveting nut
The screw rod closing；Wherein, after described interior riveting nut is locked with described screw rod phase, described screw rod is embedded in described cover plate (2).
2. cavity body filter as claimed in claim 1 is it is characterised in that described projection (21) is arranged at described resonant rod (1)
Central axis on, and described projection (21) is tapered, the conical surface that its conical surface gradient is formed with described conical cavity (12) inwall
Gradient is consistent.
3. cavity body filter as claimed in claim 2 is it is characterised in that described projection (21) is rushed with described cover plate (2) one
Molded.
4. cavity body filter as claimed in claim 3 it is characterised in that when described interior riveting nut be press tapered cup nut when,
Described screw rod is alternately arranged the axial force self-locking screw rod of arrangement for thread between adjacent two-by-two.
5. cavity body filter as claimed in claim 3 is it is characterised in that working as described interior riveting nut is to press closing in radial force certainly
During split nut, described screw rod is the screw rod of the normal arrangement of thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610830375.XA CN106356595B (en) | 2016-09-19 | 2016-09-19 | A kind of cavity body filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610830375.XA CN106356595B (en) | 2016-09-19 | 2016-09-19 | A kind of cavity body filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106356595A true CN106356595A (en) | 2017-01-25 |
| CN106356595B CN106356595B (en) | 2019-07-30 |
Family
ID=57858160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610830375.XA Active CN106356595B (en) | 2016-09-19 | 2016-09-19 | A kind of cavity body filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106356595B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120293282A1 (en) * | 2011-05-17 | 2012-11-22 | Giuseppe Frenna | Waveguide filter having coupling screws |
| CN202888364U (en) * | 2012-10-11 | 2013-04-17 | 深圳市大富科技股份有限公司 | Cavity filter and power amplifier module |
| CN203746999U (en) * | 2013-11-25 | 2014-07-30 | 华为技术有限公司 | Filter |
| CN105742773A (en) * | 2016-02-29 | 2016-07-06 | 深圳三星通信技术研究有限公司 | Cavity filter and self-locking tuning assembly thereof |
| CN205452494U (en) * | 2015-12-11 | 2016-08-10 | 深圳市虹远通信有限责任公司 | Coaxial cavity filter of low frequency |
-
2016
- 2016-09-19 CN CN201610830375.XA patent/CN106356595B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120293282A1 (en) * | 2011-05-17 | 2012-11-22 | Giuseppe Frenna | Waveguide filter having coupling screws |
| CN202888364U (en) * | 2012-10-11 | 2013-04-17 | 深圳市大富科技股份有限公司 | Cavity filter and power amplifier module |
| CN203746999U (en) * | 2013-11-25 | 2014-07-30 | 华为技术有限公司 | Filter |
| CN205452494U (en) * | 2015-12-11 | 2016-08-10 | 深圳市虹远通信有限责任公司 | Coaxial cavity filter of low frequency |
| CN105742773A (en) * | 2016-02-29 | 2016-07-06 | 深圳三星通信技术研究有限公司 | Cavity filter and self-locking tuning assembly thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106356595B (en) | 2019-07-30 |
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