CN111193084A - Filter cover plate - Google Patents
Filter cover plate Download PDFInfo
- Publication number
- CN111193084A CN111193084A CN202010013580.3A CN202010013580A CN111193084A CN 111193084 A CN111193084 A CN 111193084A CN 202010013580 A CN202010013580 A CN 202010013580A CN 111193084 A CN111193084 A CN 111193084A
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- plate body
- cover plate
- tuning
- hole
- layer plate
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- 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/30—Auxiliary devices for compensation of, or protection against, temperature or moisture effects ; for improving power handling capability
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Abstract
The invention belongs to the technical field of signal processing equipment, and particularly relates to a filter cover plate; the cover plate body comprises an upper layer plate body and a lower layer plate body, the upper layer plate body is made of a metal copper material, and the lower layer plate body is made of a metal aluminum material; a stepped tuning hole is formed in the upper-layer plate body, and the diameter of the upper end of the stepped tuning hole is larger than that of the lower end of the stepped tuning hole; a through hole is formed in the lower plate body; a tuning screw sleeve is inserted into the stepped tuning hole, and a tuning screw is connected with the internal thread of the tuning screw sleeve; the bottom end of the tuning screw sleeve is arranged in the through hole in a sliding manner; the lower end surface of the upper layer plate body and the upper end surface of the lower layer plate body are provided with buffer grooves, and V-shaped elastic sheets are arranged in the buffer grooves; the V-shaped elastic sheet is positioned in the circumferential direction of the tuning screw sleeve; the V-shaped elastic sheet arranged between the upper-layer plate body and the lower-layer plate body are matched, so that the adjusting bolt can be elastically locked and buffered, and the upper surface of the mass resonance column can be reliably connected with the cover plate body.
Description
Technical Field
The invention belongs to the technical field of signal processing equipment, and particularly relates to a filter cover plate.
Background
A filter is widely used in the field of communications, especially in the field of radio frequency communications, as a frequency selection device, and in a base station in a communication system that performs signal transmission and reception, the filter is used to select a communication signal and filter out noise or interference signals outside the frequency of the communication signal.
At present, the signal processing of the filter is usually completed by tuning self-locking screws on a cover plate of the filter, and generally, the tuning screw processing problem is the problem of signal intermodulation, specifically, a new frequency signal generated by superimposing two signals with different frequencies in a certain system.
And the tuning screw hole that sets up on the apron of current, then with tuning screw threaded connection in the tuning screw hole, because the elastic component that sets up between tuning screw and the apron is on the tuning screw hole, and then leads to tuning screw's the power of turning round to make the apron produce the phenomenon of local sunken, and then influences the reliable connection of apron and matter resonance post upper surface, and then influences the power that the wave filter bore.
Disclosure of Invention
In order to make up for the defects of the prior art, the filter cover plate provided by the invention is mainly used for solving the problems that the tuning screw holes are formed in the existing cover plate, then the tuning screws are connected into the tuning screw holes in a threaded manner, and the cover plate is locally sunken due to the tightening force of the tuning screws because the elastic pieces arranged between the tuning screws and the cover plate are arranged on the tuning screw holes, so that the reliable connection between the cover plate and the upper surface of the mass resonance column is influenced, and the power borne by the filter is further influenced.
The technical scheme adopted by the invention for solving the technical problems is as follows: the filter cover plate comprises a cover plate body; the cover plate body is used for sealing the cavity of the cavity filter, and a fixing through hole is formed in the cover plate body; the cover plate body comprises an upper plate body and a lower plate body, the upper plate body is made of a metal copper material, and the lower plate body is made of a metal aluminum material; a stepped tuning hole is formed in the upper-layer plate body, and the diameter of the upper end of the stepped tuning hole is larger than that of the lower end of the stepped tuning hole; the lower plate body is provided with a through hole; a tuning screw sleeve is inserted into the stepped tuning hole, and a tuning screw is connected with the tuning screw sleeve through an internal thread; the bottom end of the tuning screw sleeve is arranged in the through hole in a sliding manner; buffer grooves are formed in the lower end face of the upper layer plate body and the upper end face of the lower layer plate body, and V-shaped elastic pieces are arranged in the buffer grooves; the V-shaped elastic sheet is positioned in the circumferential direction of the tuning screw sleeve; when the filter cover plate works, the cover plate bodies are arranged in layers, the upper layer plate body is made of a metal copper material, the hardness of the cover plate bodies can be improved, and the lower layer plate body is made of an aluminum material, so that the heat dissipation effect on the filter wall body can be realized, and meanwhile, the elastic buffer effect on the contact between the cover plate bodies and the dielectric resonance columns can be realized; meanwhile, when the adjusting screw is connected to the cover plate body in a threaded manner, the V-shaped elastic sheet arranged between the upper plate body and the lower plate body is matched with the lower plate body, so that the adjusting bolt can be elastically locked and buffered, the upper surface of the mass resonance column can be reliably connected with the cover plate body, the contact is tighter, and the high power can be borne; meanwhile, the tuning screw sleeve is arranged in the stepped tuning hole, and the head of the tuning screw is positioned at the upper end of the stepped hole, so that the overall thickness of the cover plate body can be reduced.
Preferably, the upper wall of the buffer groove formed in the upper plate body is provided with a clamping limiting groove, and the clamping limiting groove is clamped on a V-shaped angle of the V-shaped elastic sheet; when the device works, the clamping limiting groove formed in the upper plate body can elastically limit the top end of the V-shaped elastic sheet, so that the phenomenon that the top end of the V-shaped elastic sheet is compressed and deformed due to the locking acting force of the adjusting screw is prevented, and the size of the horizontal plane of the upper plate body is further influenced; meanwhile, the phenomenon that the V-shaped elastic sheet generates extrusion sliding due to extrusion force acting on the upper end part of the V-shaped elastic sheet is prevented, and then the elastic tensioning effect of the V-shaped elastic sheet is influenced.
Preferably, the lower end surface of the upper layer plate body and the upper end surface of the lower layer plate body are provided with mounting grooves, and the mounting grooves are positioned on the fixing through holes; a limiting mounting ring is arranged in the mounting groove, and the inner diameter of the limiting mounting ring is equal to the diameter of the fixing through hole; during operation, when fixing bolt fixes the cavity at the wave filter to the apron body, the spacing collar that sets up in the mounting groove can play the effect of central point location to the tuning hole before upper plate body and the lower floor's plate body, prevents that fixing bolt's the power of screwing in is too big, leads to producing the phenomenon of dislocation between upper plate body and the lower floor's plate body, leads to the phenomenon that the central line between ladder tuning hole and the through hole produced the deviation, and then influences tuning screw's stable tuning, influences actual harmonious effect.
Preferably, an extrusion cavity is formed in the limiting mounting ring, and liquid binder is filled in the extrusion cavity; the upper end surface and the lower end surface of the extrusion cavity are provided with liquid guide micropores; the during operation, when fixing bolt fixes the apron body on the cavity of wave filter, fixing bolt can act on in the spacing mount ring to the backlog of upper plate body, make the interior liquid binder of spacing mount ring through the upper and lower both ends terminal surface of guide's micropore discharge mounting groove, make the block that spacing mount ring can be stable under the effect of extrusion force in the mounting groove, prevent that spacing mount ring from producing the phenomenon of warping or inflation under the too big state of extrusion force, and then influence the area of contact between upper plate body and the lower floor's plate body, and then influence the apron body and close sealed effect to the lid of wave filter cavity.
Preferably, one end of the V-shaped elastic sheet is connected with a cavity extrusion elastic sheet, and the end part of the cavity extrusion elastic sheet is in extrusion contact with the side wall of the limiting mounting ring; during operation, when the V-shaped elastic sheet horizontally expands under the extrusion force of the upper-layer plate body, the cavity extrusion elastic sheet connected with the end part of the V-shaped elastic sheet can be extruded and attached to the outer wall of the limiting installation ring, so that the limiting installation ring is limited and fixed, the phenomenon that the limiting installation ring obliquely slides or is extruded and expanded too much under the condition that the extrusion force is too large is prevented, and the effect of central positioning of the limiting installation ring is influenced.
Preferably, the upper end of the stepped tuning hole is provided with an annular V-shaped groove, and a clamping V-shaped ring is arranged in the annular V-shaped groove; the bottom end face of the tuning screw sleeve is in pressing contact with a clamping V-shaped ring; when the tuning bolt is in work, when the tuning bolt is in threaded connection with the tuning nut, the clamping V-shaped ring can play a role in axial clamping and limiting on the tuning nut, and the phenomenon that the tuning nut generates self-transmission due to overlarge thread torsional force of the tuning bolt is effectively prevented; simultaneously, the clamping V ring can play an elastic tensioning supporting effect on the tuning screw sleeve, and the phenomenon that the tuning screw sleeve is sunken downwards due to overlarge extrusion force of the tuning screw is prevented, so that the phenomenon that a stepped tuning hole is sunken is generated.
The invention has the following beneficial effects:
1. according to the invention, the cover plate bodies are arranged in layers, the upper plate body is made of the metal copper material, so that the hardness of the cover plate body can be improved, and the lower plate body is made of the aluminum material, so that the heat dissipation effect on the wall body of the filter can be realized, and meanwhile, the elastic buffer effect on the contact between the cover plate body and the dielectric resonance column can be realized; when adjusting screw threaded connection was gone up to the apron body simultaneously, the cooperation of the V type shell fragment that sets up between upper plate body and the lower floor's plate body and lower floor's plate body can play the effect of elastic locking buffering to adjusting bolt for can reliably be connected between matter resonance post upper surface and the apron body, and the contact is inseparabler, can bear the high power.
2. The limiting mounting ring arranged in the mounting groove can play a role in centering the tuning hole in front of the upper-layer plate body and the lower-layer plate body, and prevents the phenomenon that the upper-layer plate body and the lower-layer plate body are staggered due to overlarge twisting force of the fixing bolt, and the phenomenon that the central line between the stepped tuning hole and the through hole is deviated, so that stable tuning of the tuning screw is influenced, and the actual tuning effect is influenced.
Drawings
The invention will be further explained with reference to the drawings.
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a cross-sectional view of the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 2 in accordance with the present invention;
in the figure: the cover plate body 1, the fixing through hole 11, the buffer groove 12, the mounting groove 13, the upper plate body 2, the stepped tuning hole 21, the annular V-shaped groove 22, the clamping limiting groove 23, the lower plate body 3, the through hole 31, the tuning screw sleeve 4, the V-shaped elastic sheet 5, the limiting mounting ring 6, the cavity extrusion elastic sheet 7 and the clamping V-shaped ring 8.
Detailed Description
A filter cover according to an embodiment of the present invention will be described below with reference to fig. 1 to 3.
As shown in fig. 1 to 3, a filter cover plate according to the present invention includes a cover plate body 1; the cover plate body 1 is used for sealing the cavity of the cavity filter, and the cover plate body 1 is provided with a fixing through hole 11; the cover plate body 1 comprises an upper layer plate body 2 and a lower layer plate body 3, wherein the upper layer plate body 2 is made of a metal copper material, and the lower layer plate body 3 is made of a metal aluminum material; a stepped tuning hole 21 is formed in the upper plate body 2, and the diameter of the upper end of the stepped tuning hole 21 is larger than that of the lower end; a through hole 31 is formed in the lower plate body 3; a tuning screw sleeve 4 is inserted into the stepped tuning hole 21, and a tuning screw is connected with the tuning screw sleeve 4 through an internal thread; the bottom end of the tuning screw sleeve 4 is arranged in the through hole 31 in a sliding manner; the lower end surface of the upper layer plate body 2 and the upper end surface of the lower layer plate body 3 are provided with buffer grooves 12, and V-shaped elastic sheets 5 are arranged in the buffer grooves 12; the V-shaped elastic sheet 5 is positioned in the circumferential direction of the tuning screw sleeve 4; when the filter is in work, the cover plate bodies 1 are arranged in layers, the upper layer plate body 2 is made of a metal copper material, the hardness of the cover plate body 1 can be improved, and the lower layer plate body 3 is made of an aluminum material, so that the heat dissipation effect on the wall body of the filter can be realized, and meanwhile, the elastic buffer effect on the contact between the cover plate body 1 and the dielectric resonance column can be realized; meanwhile, when the adjusting screw is connected to the cover plate body 1 in a threaded manner, the V-shaped elastic sheet 5 arranged between the upper plate body 2 and the lower plate body 3 is matched with the lower plate body 3, so that the adjusting screw can be elastically locked and buffered, the upper surface of the mass resonance column can be reliably connected with the cover plate body 1, the contact is tighter, and high power can be borne; meanwhile, the tuning screw sleeve 4 is arranged in the stepped tuning hole 21, and the head of the tuning screw is positioned at the upper end of the stepped hole, so that the overall thickness of the cover plate body 1 can be reduced.
As an embodiment of the present invention, the upper wall of the buffer slot 12 formed on the upper plate body 2 is provided with a clamping limiting slot 23, and the clamping limiting slot 23 is clamped on the V-shaped corner of the V-shaped elastic sheet 5; when the device works, the clamping limiting groove 23 formed in the upper plate body 2 can elastically limit the top end of the V-shaped elastic sheet 5, and the phenomenon that the top end of the V-shaped elastic sheet 5 is compressed and deformed due to the locking acting force of an adjusting screw is prevented, so that the size of the horizontal plane of the upper plate body 2 is influenced; meanwhile, the phenomenon that the V-shaped elastic sheet 5 generates extrusion sliding due to extrusion force acting on the upper end part of the V-shaped elastic sheet 5 is prevented, and the elastic tensioning effect of the V-shaped elastic sheet 5 is further influenced.
As an embodiment of the present invention, the lower end surface of the upper plate 2 and the upper end surface of the lower plate 3 are provided with mounting grooves 13, and the mounting grooves 13 are located on the fixing through holes 11; a limiting installation ring 6 is arranged in the installation groove 13, and the inner diameter of the limiting installation ring 6 is equal to the diameter of the fixing through hole 11; during operation, when fixing bolt fixes the cavity at the wave filter to apron body 1, spacing collar 6 that sets up in mounting groove 13 can play the effect of central point to the tuning hole before upper plate body 2 and lower floor's plate body 3, prevent that fixing bolt's the power of screwing is too big, lead to producing the phenomenon of dislocation between upper plate body 2 and the lower floor's plate body 3, lead to the central line between ladder tuning hole 21 and the through hole 31 to produce the phenomenon of deviation, and then influence tuning screw's stable tuning, influence actual harmonious effect.
As an embodiment of the invention, an extrusion cavity is formed inside the limiting installation ring 6, and a liquid binder is filled in the extrusion cavity; the upper end surface and the lower end surface of the extrusion cavity are provided with liquid guide micropores; the during operation, when fixing bolt fixes the cover plate body 1 on the cavity of wave filter, fixing bolt can act on in spacing collar 6 to the backlog of upper plate body 2, make the interior liquid binder of spacing collar 6 discharge the upper and lower both ends terminal surface of mounting groove 13 through the guide micropore, make the block that spacing collar 6 can be stable under the effect of extrusion force in mounting groove 13, prevent that spacing collar 6 from producing the phenomenon of warping or inflation under the too big state of extrusion force, and then influence the area of contact between upper plate body 2 and the lower floor plate body 3, and then influence the sealed effect of lid of cover plate body 1 to the filter cavity.
As an embodiment of the invention, one end of the V-shaped elastic sheet 5 is connected with a cavity extrusion elastic sheet 7, and the end of the cavity extrusion elastic sheet 7 is in extrusion contact with the side wall of the limit mounting ring 6; during operation, when V type shell fragment 5 was opened when the level was under the extrusion force of upper plate body 2, 5 end connection's of V type shell fragment cavity extrusion shell fragment 7 can extrude the laminating to spacing collar 6 on the outer wall, and then played spacing fixed effect to spacing collar 6, prevented that spacing collar 6 from producing the too big phenomenon of slope slip or extrusion expansion under the too big state of extrusion force, and then influenced the effect of the center location of spacing collar 6.
As an embodiment of the present invention, an annular V-groove 22 is opened at the upper end of the stepped tuning hole 21, and a clamping V-ring 8 is installed in the annular V-groove 22; the bottom end surface of the tuning screw sleeve 4 is in extrusion contact with a clamping V-shaped ring 8; when the tuning bolt is in work, when the tuning bolt is in threaded connection with the inside of the tuning screw sleeve 4, the clamping V-shaped ring 8 can play a role in axial clamping and limiting the tuning screw sleeve 4, and the phenomenon that the tuning screw sleeve 4 generates self-transmission due to overlarge thread torsional force of the tuning bolt is effectively prevented; simultaneously, the clamping V-shaped ring 8 can play a role in elastically tensioning and supporting the tuning screw sleeve 4, and the phenomenon that the tuning screw sleeve 4 is sunken downwards due to overlarge extrusion force of a tuning screw is prevented, so that the phenomenon that the stepped tuning hole 21 is sunken is generated.
The specific working process is as follows:
when the filter works, when the cover plate body 1 is fixed on a cavity of the filter by the fixing bolt, the limiting mounting ring 6 arranged in the mounting groove 13 can play a role in centering a tuning hole in front of the upper plate body 2 and the lower plate body 3, and the phenomenon that the upper plate body 2 and the lower plate body 3 are staggered due to overlarge tightening force of the fixing bolt is prevented; the cover plate bodies 1 are arranged in layers, the upper layer plate body 2 is made of a metal copper material, the hardness of the cover plate body 1 can be improved, and the lower layer plate body 3 is made of an aluminum material, so that the heat dissipation effect on the filter wall body can be realized, and meanwhile, the elastic buffer effect on the contact between the cover plate body 1 and the dielectric resonance column can be realized; when adjusting screw threaded connection was gone up to the apron body 1 simultaneously, the cooperation of V type shell fragment 5 and lower floor's plate body 3 that set up between upper plate body 2 and the lower floor's plate body 3 can play the effect of elasticity locking buffering to adjusting bolt for can reliably be connected between matter resonance post upper surface and the apron body 1, and the contact is inseparabler, can bear the high power.
In the description of the present invention, it is to be understood that the terms "center", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be taken as limiting the scope of the present invention.
While the invention has been described with reference to specific embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from its scope. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (6)
1. A filter cover plate comprising a cover plate body (1); the cover plate body (1) is used for sealing the cavity of the cavity filter, and the cover plate body (1) is provided with a fixing through hole (11); the method is characterized in that: the cover plate body (1) comprises an upper layer plate body (2) and a lower layer plate body (3), the upper layer plate body (2) is made of a metal copper material, and the lower layer plate body (3) is made of a metal aluminum material; a stepped tuning hole (21) is formed in the upper plate body (2), and the diameter of the upper end of the stepped tuning hole (21) is larger than that of the lower end; a through hole (31) is formed in the lower plate body (3); a tuning screw sleeve (4) is inserted in the stepped tuning hole (21), and a tuning screw is connected in the tuning screw sleeve (4) through internal threads; the bottom end of the tuning screw sleeve (4) is arranged in the through hole (31) in a sliding manner; the lower end face of the upper-layer plate body (2) and the upper end face of the lower-layer plate body (3) are provided with buffer grooves (12), and V-shaped elastic sheets (5) are arranged in the buffer grooves (12); the V-shaped elastic sheet (5) is positioned in the circumferential direction of the tuning screw sleeve (4).
2. A filter cover plate according to claim 1, wherein: the upper plate body (2) is provided with a buffer groove (12), the upper wall of the buffer groove is provided with a clamping limiting groove (23), and the clamping limiting groove (23) is clamped on a V-shaped angle of the V-shaped elastic sheet (5).
3. A filter cover plate according to claim 1, wherein: mounting grooves (13) are formed in the lower end face of the upper plate body (2) and the upper end face of the lower plate body (3), and the mounting grooves (13) are located on the fixing through holes (11); a limiting installation ring (6) is arranged in the installation groove (13), and the inner diameter of the limiting installation ring (6) is equal to the diameter of the fixing through hole (11).
4. A filter cover plate according to claim 3, wherein: an extrusion cavity is formed in the limiting mounting ring (6), and liquid binder is filled in the extrusion cavity; and the upper end surface and the lower end surface of the extrusion cavity are provided with liquid guide micropores.
5. A filter cover plate according to claim 4, wherein: one end of the V-shaped elastic sheet (5) is connected with a cavity extrusion elastic sheet (7), and the end part of the cavity extrusion elastic sheet (7) is in extrusion contact with the side wall of the limiting mounting ring (6).
6. A filter cover plate according to claim 5, wherein: an annular V-shaped groove (22) is formed in the upper end of the stepped tuning hole (21), and a clamping V-shaped ring (8) is installed in the annular V-shaped groove (22); and the bottom end surface of the tuning screw sleeve (4) is in pressing contact with a clamping V-shaped ring (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010013580.3A CN111193084B (en) | 2020-01-07 | 2020-01-07 | Filter cover plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010013580.3A CN111193084B (en) | 2020-01-07 | 2020-01-07 | Filter cover plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111193084A true CN111193084A (en) | 2020-05-22 |
| CN111193084B CN111193084B (en) | 2021-07-20 |
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ID=70708485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010013580.3A Active CN111193084B (en) | 2020-01-07 | 2020-01-07 | Filter cover plate |
Country Status (1)
| Country | Link |
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| CN (1) | CN111193084B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112448108A (en) * | 2019-08-29 | 2021-03-05 | 上海诺基亚贝尔股份有限公司 | Filter, self-locking adjusting device for filter and manufacturing method of self-locking adjusting device |
| CN113258233A (en) * | 2021-06-22 | 2021-08-13 | 深圳金泰格机电股份有限公司 | Self-locking tuning screw, machining method and cavity filter |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112448108A (en) * | 2019-08-29 | 2021-03-05 | 上海诺基亚贝尔股份有限公司 | Filter, self-locking adjusting device for filter and manufacturing method of self-locking adjusting device |
| CN113258233A (en) * | 2021-06-22 | 2021-08-13 | 深圳金泰格机电股份有限公司 | Self-locking tuning screw, machining method and cavity filter |
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| Publication number | Publication date |
|---|---|
| CN111193084B (en) | 2021-07-20 |
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