CN209544572U - A kind of filter of novel tuning cover board - Google Patents
A kind of filter of novel tuning cover board Download PDFInfo
- Publication number
- CN209544572U CN209544572U CN201920306482.1U CN201920306482U CN209544572U CN 209544572 U CN209544572 U CN 209544572U CN 201920306482 U CN201920306482 U CN 201920306482U CN 209544572 U CN209544572 U CN 209544572U
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- China
- Prior art keywords
- cover board
- nut
- damping
- filter
- bolt
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Abstract
The utility model relates to signal handling equipment fields, refer in particular to a kind of filter of novel tuning cover board, tuning cover board including filter cavity and for covering the filter cavity, the through-hole that the tuning cover board includes rectangle cover board body and is arranged on cover board body, the nut of metal material is embedded in the through-hole, the nut includes nut body and screw hole, one end that filter cavity is closed in the screw hole is installed on the damping of a non-metallic material, the one end of the screw hole far from filter cavity can precession install a bolt, one end precession screw hole of the bolt is resisted against the damping or through the damping, the damping filters out the metal fragment being adhered on bolt end and is allowed to be trapped in the interference reduced in nut to filter internal signal.
Description
Technical field
The utility model relates to signal handling equipment fields, refer in particular to a kind of filter of novel tuning cover board.
Background technique
Filter is widely used in the communications field, especially field of radio frequency communication as a kind of frequency selection device,
Communication system is completed in signal transmitting and received base station, and filter be used to select signal of communication, filter out communication signal frequency
Outer clutter or interference signal.
Currently, the frequency tuning of cavity body filter is usually completed by the tuning screw on filter cover board.It is adjusting
After resonance frequency, above-mentioned tuning screw loosens in order to prevent, it usually needs is located at the part outside cavity in the tuning screw and adds
One fixture nut, more material costs can not only be expended by installing a fixture nut additional, and in addition reinforced using fixture nut
Effect is also usually unsatisfactory.It is this that locked structure is carried out by double nut, due to the presence of thread pitch, make it easy to send out
Screw rod pulls up during raw locking, and debugging result, which changes, influences the adverse consequences of adjustment accuracy.In the prior art to its into
The mode that makes up of row relies primarily on that carry out dispensing to nut after the completion of debugging locking.
In addition, industry also has a small amount of structure for applying Self-locking screw at present, such as: grooving and two sections of turning on screw rod
The screw thread being staggered, when screw in common self-clinching nut using when pulled open by the screw thread that is staggered, grooving position generates axial tensile force,
So that frictional force reaches self-locking purpose between increasing thread；This kind of self-locking structure is the problem is that due to screw thread and rotation grooving essence
Degree requires high, processing cost height, while individual precision difference easily causes unstable and Reusability failure wind in terms of coupling mechanism force
Danger is big, and the precision difference of screw and nut in matched rotation, can generate a small amount of metal fragment and be fallen by the end band of screw
To resonant cavity, this will affect the performance of filter.
Therefore, it is necessary to design it is a kind of can Reusability and block metal fragment fall to the assembly of resonant cavity just
The filter of prompt, signal-stabilized tuning cover board and the application cover board.
Utility model content
The utility model is for the unstable easy loosening of the tuning screw assembly for solving filter and the metal in assembling process
The deficiency that clast can not block, and a kind of tuning cover board and the filter using the cover board are provided.
The filter of the utility model, the tuning cover board including filter cavity and for covering the filter cavity,
The tuning cover board includes rectangle cover board body and the through-hole that is arranged on cover board body, is embedded with metal material in the through-hole
Nut, the nut includes nut body and screw hole, and one end that filter cavity is closed in the screw hole is installed on a non-gold
Belong to material damping, the one end of the screw hole far from filter cavity can precession install a bolt, one end precession of the bolt
Screw hole is resisted against the damping or through the damping.
Further, the nut includes the first loop coil and the second loop coil with the derivative extension of the first loop coil, the damping
The screw hole for being embedded in the second loop coil and entering far from bolt precession direction.
Further, the tuning cover board further includes a stop collar, and the stop collar is located at the screw hole that bolt screws out nut
The peripheral side in direction, the stop collar are resisted against on nut or nut and damping.
Further, the damping is circular solid laminated structure, and the outer diameter of damping is greater than the interior of the screw hole of nut
Diameter.
Further, the damping is cyclic structure, and the outer diameter of the damping is greater than the internal diameter of the screw hole of nut, damping
Internal diameter is less than or equal to the internal diameter of the screw hole of nut.
Further, the aperture that the stop collar forms hole is greater than the outer diameter of bolt, the stop collar not with threaded bolt contacts.
Further, the stop collar is multiple restriction protrusions, and the multiple restriction protrusion is uniformly alternatively arranged cyclization
Shape, the aperture of the annular are greater than the outer diameter of bolt, the outer surface of the stop collar be equipped with fillet surface and not with threaded bolt contacts.
Further, the stop collar extends to form or from nut from cover board body derivative far from bolt precession nut
Side derivative extends to form.
Further, the stop collar includes a ring body and derives the protrusion extended from ring body, described convex
Act the one end for being resisted against nut or nut and damping.
The filter of the tuning cover board of the utility model, using the nut with damping, the damping is embedded in nut
Side.When installing nut, the same tuning cavity of being biased to of the damping is installed.In this way when bolt precession runs through nut, bolt
End first be in contact with the internal screw thread of nut, finally through damping progress lock-bit.Damping, which also filters out, is adhered to bolt
The metal fragment that end and nut friction generate is allowed to accumulate the influence reduced in nut to performance of filter.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of filter of the utility model with tuning cover board；
Fig. 2 is the configuration schematic diagram of the tuning cover board of filter in Fig. 1；
Fig. 3 is the cross-section structure stereoscopic schematic diagram of Fig. 2；
The schematic diagram of the section structure for the tuning cover board that Fig. 4 is Fig. 2；
Fig. 5 is the second embodiment the schematic diagram of the section structure of the utility model；
Fig. 6 is the portion the A enlarged structure schematic diagram in Fig. 5；
Fig. 7 is the 3rd embodiment the schematic diagram of the section structure of the utility model；
Fig. 8 is the fourth embodiment the schematic diagram of the section structure of the utility model；
Fig. 9 is the elevational schematic view of the nut structure in Fig. 8；
Figure 10 is the elevational schematic view of nut structure in the 5th embodiment of the utility model；
Figure 11 is the schematic diagram of the section structure of the sixth embodiment of the utility model.
Specific embodiment
The utility model is illustrated in a manner of various embodiments with reference to the accompanying drawings.In Figure of description, there is class
It will be indicated with identical component symbol like the element of structure or function.Component sizes and feature in attached drawing are only to facilitate say
Each embodiment that is bright and disclosing the utility model, is not intended to carry out the utility model exhaustive explanation, nor pair
The scope of the utility model is limited.
In following elaborations, for example specific technique of detail, interface, technology etc. are not constitute for illustrative purposes
Limitation, to guarantee that techniques disclosed herein scheme can thoroughly be understood in detail.However, those skilled in the art can
Understand that the technology disclosed here can be used in the specific embodiment other than these details, the general skill of such this field
Art personnel can implement engineering philosophy as various embodiments, even if these embodiments do not carry out detailed retouch here
It states or shows, but these embodiments are still fallen in engineering philosophy and without departing from its spirit and scope.In some realities
It applies in example, some well known equipment, method are not described in detail, in case techniques disclosed herein description is by unnecessary
Details redundancy illustrate.The elaboration of all related principle, visual angle and specific embodiments carried out herein includes structure and function
The equivalent way of energy.In addition, these equivalent ways include currently known equivalent and the equivalent that further develops, such as institute
What is made further progress can implement the element of said function, even if structure may be different.
Ginseng Fig. 1-4 show the filter 100 according to an embodiment of the present invention, including metal material such as aluminium, iron, copper
Deng and its alloy by the cover board 10 of the technological formings such as die casting, turning and 3D printing technique, the cover board 10 is for covering cavity
The metal cavity 20 of filter.The ductility of metal cover board 10 is preferable, and thickness need to only be controlled at several millimeters.The lid
Plate 10 is equipped with multiple through-holes 11 for extending through metal cavity, is installed on tuning screw 30 in the through-hole 11.Specifically, institute
It states through-hole 11 and includes two parts, i.e. the first hole portion 11a and the second hole portion 11b being connected to the first hole portion 11a, and first hole
The overlapping of the central axis of portion 11a and the second hole portion 11b keeps concentricity.In Fig. 4 of the utility model, the first hole portion 11a's is interior
Aperture is greater than the internal orifice dimension of the second hole portion 11b, so that the second hole portion 11b is by the one from the derivative extension of cover board body 10
Molding stop collar 10a is formed.The stop collar 10a closer to filter 100 metal cavity 20, to being installed in the through-hole
Nut 31 or other elements support limit in 11, so that nut 31 and the other elements installation being loaded on cover board 10 are steady
It is fixed, it is unlikely to fall or loosens.
In the embodiments of the present invention, the outer surface of the nut 31 is equipped with screw thread 312, and screw thread can be set in spiral shell
On the entire outer surface of mother 31, it also can be set and be embedded on the surface contacted in through-hole 11 with cover board 10 in nut 31.Consider
To the actual demand of present filter cover board, the inner surface of the through-hole 11 can not have to setting internal screw thread, only by nut 31 with
The outer diameter for the outer surface part with screw thread 312 that cover board 10 contacts is slightly larger than through-hole 11, in this way by nut 31 and lid
Plate realizes interference fit.The central location of the nut 31 is equipped with screw hole 311.As shown in Fig. 2, nut 31 in the present embodiment
Including the first loop coil 31a and with the integrally formed second loop coil 31b of the first loop coil 31a, second loop coil is embedded in through-hole 11
It is interior.The screw hole 311 runs through the first loop coil 31a and the second loop coil 31b.A piece bolt 32 is installed in screw hole 311.The bolt
32 outer surface is equipped with external screw thread, is equipped with the internal screw thread to match with the external screw thread of bolt 32 in the screw hole 311 of nut 31.It is described
Internal screw thread is equipped in first loop coil 31a to be allowed to match with the external screw thread of bolt 32.Further, the nuts and bolt is by phase
The influence of matched accuracy of thread, Reusability will cause the loosening of bolt 32；Second spiral shell is equipped in the second loop coil 31b
Hole 311b, the second screw hole 311b are bigger than the aperture of the first screw hole 311a positioned at the first loop coil 31a, such a opposite large aperture
The second screw hole 311b in be equipped with one damping 33.33 rounded sheets of the damping or the annular with hole 331.Work as rotation
When bolt 32 is installed on nut 31, the screw thread of bolt 32 is in contact with the internal screw thread of the nut 31 on cover board 10 first, then
It the end of bolt 32 can be through damping 33 made of the non-metallic materials such as rubber, nylon or polypropylene, 33 pairs of bolts of the damping
32 formation reaction force extrusion frictions are to realize the self-locking function of bolt 32.Moreover, because when bolt 32 and nut 31 assemble
The influence of accuracy of thread, due to damping 33 be located at close to tuning cavity direction be arranged, and damp 33 lower part there is no with bolt
32 internal screw threads to contact with each other, the phase mutual friction of both first front bolt 32 and nut 31, which generates metal fragment, can adhere to bolt 32
On, the bolt for being stained with metal fragment partially passes through damping 33, and the metal fragment of the retardance of material dampened, generation is deposited over
Without falling into tuning cavity in first screw hole 311a, also no longer also would not with nut friction through the bolt part of overdamp 33
Metal fragment is generated, influence of the metal fragment to performance of filter certainly will be improved in this way.In the embodiments of the present invention, institute
It states and damps the diameter that the aperture for setting screw hole 331 in 33 can be slightly smaller than bolt 32, realized with the frictional force of increase between the two good
The effect of good self-locking and filtering metal clast.
In the present embodiment, stop collar 10a can not only limit nut 31 and fall off, and can also be resisted against according to practical application
In damping 33, fallen into metal cavity 20 with preventing damping 33 from falling off from nut.
Join shown in Fig. 5-6, the second embodiment of the utility model and the difference of first embodiment are the stop collar 10a
Equipped with fillet surface 10b.After nut 32 is assemblied in through-hole 11, the stop collar 10a is formed through the stamping process, fillet surface
10b is compressed in nut 31 convenient for damping 33 by impact style, since the aperture of the stop collar 10a is less than damping 33
Outer diameter, greater than damping 33 internal diameter.The damping 33 is limited in nut 31, and what bolt 32 can be smooth runs through stop collar
10a。
Join shown in Fig. 7, is the 3rd embodiment of the utility model, the height of nut 32 is with the difference of above-described embodiment
Degree is configured to essentially identical with 10 thickness of cover board, can shorten the matching length of bolt 32 and nut 31 in this way to reduce metal
The generation of clast.The upper surface 31C of the nut 31 and upper surface 10C of cover board 10 forms coplanar.The damping 33 is still embedding
It is located in nut 31.
Join shown in Fig. 8-9, be the fourth embodiment of the utility model, the nut 31 is embedded into cover board 10, screw thread 312 with
The inner wall clamping adapted of through-hole 11.In each embodiment of the utility model, screw thread 312 can be spiral screw thread,
Can be multiple horizontal, vertical bar shaped or netted lines of being parallel to each other, it is intended to can not only increase external friction power, moreover it is possible to well with
Through-hole adapted.The lower end of the nut 31 extends in tuning cavity, and the height of nut 31 is greater than the thickness of cover board 10.The damping
33 are installed on nut 31 and one end far from cover board 10.A stop collar 10a is derivative from nut 31 in the present embodiment extends
Contradict damping 33.The fillet surface 10b that the stop collar 10a is equipped with, it is contactless convenient for bolt that internal diameter is greater than the diameter of bolt 32
Run through.In this way when bolt 31 is through nut 32 and damping 33, since the outer diameter of bolt 31 is less than in the stop collar 10a
Diameter, then bolt 31 pass through stop collar 10a and not be in contact.
In addition to above structure, join shown in Figure 10, another embodiment of the utility model, the stop collar 10a can be from
The derivative multiple restriction protrusions extended of nut 31.In the present embodiment, four restriction protrusions, which are uniformly alternatively arranged, circularizes, institute
The aperture for stating annular is greater than the outer diameter of bolt 32, and the stop collar 10a is not contacted with bolt 32.
It is the sixth embodiment of the utility model refering to fig. 1 shown in 1.The present embodiment and the various embodiments described above difference
It is that above-mentioned stop collar 10a is derivative from the cover board 10 or derives from nut 31.In the present embodiment, further comprise one extremely
Small part riveting is into the stop collar 34 in the through-hole 11.The stop collar 34 includes a ring body 34a and from ring body
The derivative raised 34b extended of 34a.The outer diameter of the protrusion 34b can be slightly larger than the internal diameter of through-hole 11, in this way when with damping 33
Nut 31 be installed in through-hole 11 after, the position that nut 31 falls off or installs in order to prevent is excessively amesiality, revolves in nut
Stop collar 34 is installed into the other side in 11 direction of through-hole.The outer diameter of certain protrusion 34b can be slightly larger than the second spiral shell of nut
The internal diameter of hole 311b, in this way protrusion 34b are trapped in the second screw hole 311b so that stop collar 34 is retained on nut 32.
The internal diameter of the centre bore 34C of stop collar 34 also greater than bolt 32 outer diameter not with joint, raised 34b be resisted against nut or
One end of nut and damping falls and is limited to prevent anti-avulsion.
The tuning cover board 10 of the utility model, since using the nut 32 with damping 33, the damping 33 is embedded in spiral shell
Side in mother 31.When installing nut 31, tuning cavity is equally biased in the damping 33.In this way when bolt 32 passes through nut 31
When, the end of bolt 32 is first in contact with the internal screw thread of nut 31, finally carries out lock-bits through damping 33, damps 33 also mistakes
It filters the metal fragment being adhered on 32 end of bolt and is allowed to be trapped in the influence reduced in nut to 100 performance of filter.
Although the foregoing describe specific embodiment of the present utility model, it will be appreciated by those of skill in the art that
These are merely examples, and the protection scope of the utility model is defined by the appended claims.Those skilled in the art
Member can make numerous variations or be repaired to these embodiments under the premise of without departing substantially from the principles of the present invention and essence
Change, but these change and modification each fall within the protection scope of the utility model.
Claims (9)
1. a kind of filter of novel tuning cover board, the tuning lid including filter cavity and for covering the filter cavity
Plate, the tuning cover board include rectangle cover board body and the through-hole that is arranged on cover board body, are embedded with metal in the through-hole
The nut of material, it is characterised in that: the nut includes nut body and screw hole, and the one of filter cavity is closed in the screw hole
End is installed on the damping of a non-metallic material, the one end of the screw hole far from filter cavity can precession install a bolt, it is described
One end precession screw hole of bolt is resisted against the damping or through the damping.
2. the filter of novel tuning cover board according to claim 1, it is characterised in that: the nut include the first loop coil and
With derivative the second loop coil extended of the first loop coil, the damping is embedded in the second loop coil and far from the entrance of bolt precession direction
Screw hole.
3. the filter of novel tuning cover board according to claim 1 or claim 2, it is characterised in that: the tuning cover board further includes
One stop collar, the stop collar are located at the side that bolt screws out the screw hole direction of nut, and the stop collar is resisted against nut or spiral shell
In female and damping.
4. the filter of novel tuning cover board according to claim 3, it is characterised in that: the damping is circular solid sheet
Shape structure, the outer diameter of damping are greater than the internal diameter of screw hole.
5. the filter of novel tuning cover board according to claim 3, it is characterised in that: the damping is cyclic structure, institute
The outer diameter for stating damping is greater than the internal diameter of screw hole, and the internal diameter of damping is less than or equal to the internal diameter of screw hole.
6. the filter of novel tuning cover board according to claim 3, it is characterised in that: the stop collar forms the aperture in hole
Greater than the outer diameter of bolt, the stop collar not with threaded bolt contacts.
7. the filter of novel tuning cover board according to claim 3, it is characterised in that: the stop collar is that multiple limits are prominent
It rises, the multiple restriction protrusion, which is uniformly alternatively arranged, to be circularized, and the aperture of the annular is greater than the outer diameter of bolt, the limit
The outer surface of ring be equipped with fillet surface and not with threaded bolt contacts.
8. the filter of novel tuning cover board according to claim 3, it is characterised in that: the stop collar spreads out from cover board body
It is raw to extend to form or extended to form from nut far from the side derivative of bolt precession nut.
9. the filter of novel tuning cover board according to claim 3, it is characterised in that: the stop collar includes an annular
Ontology and the protrusion for deriving extension from ring body, the protrusion are resisted against one end of nut or nut and damping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920306482.1U CN209544572U (en) | 2019-03-11 | 2019-03-11 | A kind of filter of novel tuning cover board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920306482.1U CN209544572U (en) | 2019-03-11 | 2019-03-11 | A kind of filter of novel tuning cover board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209544572U true CN209544572U (en) | 2019-10-25 |
Family
ID=68275021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920306482.1U Expired - Fee Related CN209544572U (en) | 2019-03-11 | 2019-03-11 | A kind of filter of novel tuning cover board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209544572U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109786908A (en) * | 2019-03-11 | 2019-05-21 | 深圳市安特无线设备有限公司 | Tune the filter of cover board and the application cover board |
-
2019
- 2019-03-11 CN CN201920306482.1U patent/CN209544572U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109786908A (en) * | 2019-03-11 | 2019-05-21 | 深圳市安特无线设备有限公司 | Tune the filter of cover board and the application cover board |
| CN109786908B (en) * | 2019-03-11 | 2024-02-23 | 深圳市安特无线设备有限公司 | Tuning cover plate and filter using same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191025 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |