CN209626394U - The filter of Self-locking screw and the application screw - Google Patents
The filter of Self-locking screw and the application screw Download PDFInfo
- Publication number
- CN209626394U CN209626394U CN201920304974.7U CN201920304974U CN209626394U CN 209626394 U CN209626394 U CN 209626394U CN 201920304974 U CN201920304974 U CN 201920304974U CN 209626394 U CN209626394 U CN 209626394U
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- Prior art keywords
- screw
- damping
- filter
- self
- screw rod
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Abstract
The utility model relates to signal handling equipment fields, refer in particular to a kind of Self-locking screw and the filter using the screw, the frequency of cavity body filter is finely tuned using the screw for being equipped with damping, the screw includes the damping of screw rod non-metallic material, described to damp the terminal position for being located adjacent to screw rod.The screw is installed on the cover board of filter, due to damping and the larger self-locking function for realizing screw of the frictional force of cover board, and the metal fragment that screw generates in the precession engagement process installed is damped blocking delay to prevent from falling into filter cavity, is conducive to the stabilization and promotion of performance of filter.
Description
[technical field]
The utility model relates to signal handling equipment fields, refer in particular to a kind of Self-locking screw and the filtering using the screw
Device.
[background technique]
Cavity filter generally includes lid and multiple cavities.One or more is equipped in each cavity of cavity filter
A resonant body.The function of each resonant body is equivalent to an electronic oscillating circuit.The oscillating circuit be include inductance part and electricity
Hold the parallel oscillatory circuit of part, by adjusting inductance part and capacitive part, can be realized to the resonance frequency of filter into
Row adjustment.The method more commonly used to one kind of capacitor adjustment is by the way that classic screw is goed deep into cavity, to adjust classic screw
It is tuned with the spacing of resonant body.
Mode is mainly the following for the anti-loose structure of cavity body filter tuning screw in the prior art: the first,
The mode of nut locking tuning screw.When implementation, there is externally threaded locking will tune tuning screw one end by nut
Screw lock is on the cover board.There are the following problems for which: due to needing additional lock nut, will increase the space of product
And Material Cost, and need to fasten nut, tuning period is increased, the raising of assembly efficiency is unfavorable for.Second
Kind, the mode of tuning screw.When implementation, so that the interior spiral shell after tuning screw is in the threaded hole being screwed on cover board, on cover board
Line can be closely engaged with the screw thread on screw rod.There are the following problems for which: due to the screw hole assembly on tuning screw and cover board
The assembling structure being integrated, the requirement to precision is also higher, increases the difficulty and assembly cost of manufacture；And screw rod and interior spiral shell
Line phase mutual friction during screwing is also easy to produce metal fragment, this will affect the performance of filter.
Therefore, it is necessary to design it is a kind of can Reusability metal fragment can be blocked to fall, signal-stabilized Self-locking screw
And the filter using the screw.
[utility model content]
It is utility model aims to solve the unstable easy loosening of existing tuning screw assembly and golden in assembling process
Belong to the deficiency that clast can not block, and a kind of Self-locking screw and the filter using the screw are provided.
In order to achieve the above object, the technical solution of the utility model is as follows:
The utility model Self-locking screw, for finely tuning the frequency of cavity body filter, the screw includes cylindricality screw rod, is located at
External screw thread on screw rod, the damping of non-metallic material is also connected on the screw rod, and the outer diameter of the damping is greater than or equal to outer
The outer diameter of screw thread.
Preferably, one end of the screw rod is head end, and the other end is end, described to damp head end and the end for being installed in screw rod
Between end, the external screw thread is located between damping and head end.
Preferably, the part of the damping and end is polished rod, and the externally threaded outer diameter is greater than the maximum outside diameter of polished rod.
Preferably, one end of the screw rod is head end, and the other end is end, described to damp head end and the end for being installed in screw rod
Between end, the external screw thread includes the second screw thread between the first screw thread and damping and end damped between head end,
The outer diameter of second screw thread is respectively less than the outer diameter of the outer diameter and the first screw thread that damp.
Preferably, one end of the screw rod is head end, and the other end is end, described to damp the end for being connected to screw rod.
A kind of filter using Self-locking screw, it is right on the lid including the cover board for covering a filter cavity
It answers wave device cavity to offer through-hole, the screw of the metal material for adjusting filter resonance frequency is installed in the through-hole,
The screw includes screw rod, the external screw thread being located on screw rod, and the damping of non-metallic material, the resistance are also connected on the screw rod
Buddhist nun is embedded in through-hole, and the outer diameter of damping is greater than or equal to externally threaded outer diameter.
Preferably, one end that the screw rod enters through-hole is head end, and the other end is end, and the damping is installed in screw rod
Between head end and end, the external screw thread is located between damping and head end.
Preferably, one end that the screw rod enters through-hole is head end, and the other end is end, and the damping is installed in screw rod
Between head end and end, the external screw thread includes the between the first screw thread and damping and end between damping and head end
Two screw threads, the outer diameter of second screw thread are respectively less than the outer diameter of the outer diameter and the first screw thread that damp.
Preferably, the outer diameter of the damping is greater than or equal to the outer diameter of the first screw thread.
Preferably, the damping is injection molding in the peripheral side of screw rod.
Preferably, one end that the screw rod enters through-hole is head end, and the other end is end, and the damping molding is connected to spiral shell
The end of bar.
Preferably, the screw rod is meshed with the nut of a metal material, and the nut is embedded in the through-hole of cover board.
The utility model filter finely tunes the frequency of cavity body filter using the screw for being equipped with damping.The screw packet
The damping of screw rod and non-metallic material is included, it is described to damp the terminal position for being located adjacent to screw rod.The screw is installed in filtering
On the cover board of device, due to damping the self-locking function with the larger realization screw of the frictional force of cover board, and screw is nibbled in the precession installed
During conjunction, the metal fragment of generation is damped blocking and is detained to prevent from falling into filter cavity, filters out signal of communication frequency
Clutter or interference signal outside rate are conducive to the stabilization and promotion of performance of filter.The utility model structure is simple, at low cost
Honest and clean, very easily installation and replacement are conducive to be widely popularized.
[Detailed description of the invention]
Fig. 1 is the schematic perspective view of the utility model filter；
Fig. 2 is the diagrammatic cross-section of the cover board in Fig. 1 with Self-locking screw；
Fig. 3 is that the utility model Self-locking screw installs second embodiment diagrammatic cross-section on the cover board；
Fig. 4 is that the utility model Self-locking screw installs 3rd embodiment diagrammatic cross-section on the cover board；
Fig. 5 is that the utility model Self-locking screw installs fourth embodiment diagrammatic cross-section on the cover board.
[specific embodiment]
The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining attached drawing description is exemplary, it is intended to for explaining the utility model, and should not be understood as to the utility model
Limitation.
With reference to the accompanying drawing, it elaborates to the utility model filter 100.
Join shown in Fig. 1, be the utility model filter 100, it is applied to the frequency point to specific frequency in power supply line or should
Frequency other than frequency point is effectively filtered out, after obtaining the power supply signal of a specific frequency, or one specific frequency of elimination
Power supply signal.The filter 100 includes a filter cavity 30, covers the cover board 10 of the metal material of filter cavity, institute
The screw 20 that multiple metal materials for being used to adjust filter resonance frequency are installed on cover board is stated, the end of the screw 20 is set
There are the slot convenient for the twisting of debugging knob or hole.
Join shown in Fig. 2 to Fig. 5, further includes the cover board being installed on above-mentioned filter cavity 30 for the utility model filter
10 and screw 20.Respective filter cavity 30 offers through-hole 11 on the lid 10, is installed in the through-hole 11 for adjusting
The screw 20 of the metal material of filter resonance frequency is saved, the screw 20 includes cylindrical screw rod 21, is located on screw rod 21
External screw thread 22 is also connected with the damping 40 of non-metallic material on the screw rod 21.In each embodiment of the utility model, institute
Stating 21 turn-knob of screw rod to enter one end of through-hole 11 is head end 21a, and the one end for being exposed at 10 outside of cover board is end 21b.In this reality
It applies in example, the damping 40 is injection molded between the head end 21a and end 21b of screw rod 21, and usually damping 40 can be installed in
It is some by proximal end 21b.The external screw thread 22, which is located at, to be damped between 40 and head end 21a.The damping 40 is embedded in through-hole 11
It is interior, damp 40 outer diameter be greater than or equal to external screw thread 22 outer diameter.When 20 precession through-hole 11 of screw, external screw thread 22 and through-hole 11
Engagement, can generate metal fragment in the process.Since damping 40 is embedded in through-hole 11, damping 40 can be detained metal fragment and exist
It prevents from falling into filter cavity 30 in through-hole.40 parts away from end 21b of damping can be set as polished rod, and the maximum outside diameter of polished rod is small
In the internal diameter of through-hole 11, therefore metal fragment will not be generated, be conducive to the stabilization and promotion of performance of filter.Meanwhile non-metallic material
The damping 40 of matter and the frictional force of through-hole wall are larger, prevent screw rod 21 from falling off and realize self-locking function.The material of the damping 40
It can be silica gel, rubber, nylon, wear-resisting plastics etc., injection molding is in the peripheral side of screw rod 21.Damping 49, which can be molded, to be twined
It is wound on screw rod 21.
Join shown in Fig. 3, for the second embodiment of the utility model, the difference of the present embodiment and first embodiment is described
Screw rod 21 is meshed with the nut 50 of a metal material, and the nut 50 is embedded in the through-hole 11 of cover board.In each embodiment
In, nut 50 can according to need using in various embodiments.
Shown in ginseng Fig. 4, the present embodiment is unlike the embodiments above to be, the external screw thread 22 includes being located at damping 40 and head
The first screw thread 22a between 21a is held, the second screw thread 22b between 40 and end 21b, the outer diameter of the second screw thread 22b are damped
The respectively less than outer diameter of the outer diameter and the first screw thread 22a of damping 40, to avoid on screw rod 22 from damping 40 to the part of end 21b
Generate metal fragment.The outer diameter of the damping 40 is greater than or equal to the outer diameter of the first screw thread 22a.
Join shown in Fig. 5, the difference of the present embodiment and other embodiments is, the damping 40 is connected to the end of screw rod 21
21b.External screw thread 22 is again provided on screw rod 21, the outer diameter for damping 40 is greater than external screw thread 22.
The utility model filter finely tunes the frequency of cavity body filter, the damping position using the screw for being equipped with damping
In the terminal position close to screw rod.Due to damping the self-locking function with the larger realization screw of the frictional force of cover board, and screw is being pacified
If precession engagement process in, the metal fragment of generation be damped blocking be detained to prevent from falling into filter cavity, filter out
Clutter or interference signal outside communication signal frequency are conducive to the stabilization and promotion of performance of filter.The utility model structure letter
Single, low in cost, very easily installation and replacement are conducive to be widely popularized.
The foregoing is merely the better embodiment of the utility model, the protection scope of the utility model is not with above-mentioned reality
The mode of applying is limited, as long as those of ordinary skill in the art's equivalent modification according to made by the utility model disclosure or change
Change, should be included in the scope of the protection described in the claims.
Claims (9)
1. a kind of Self-locking screw, for finely tuning the frequency of cavity body filter, it is characterised in that: the screw includes cylindricality screw rod,
The external screw thread being located on screw rod, the damping of non-metallic material is also connected on the screw rod, and the outer diameter of the damping is greater than or waits
In externally threaded outer diameter.
2. Self-locking screw according to claim 1, it is characterised in that: one end of the screw rod is head end, and the other end is end,
The damping is installed between the head end of screw rod and end, and the external screw thread is located between damping and head end.
3. Self-locking screw according to claim 2, it is characterised in that: the part of the damping and end is polished rod, described outer
The outer diameter of screw thread is greater than the maximum outside diameter of polished rod.
4. Self-locking screw according to claim 1, it is characterised in that: one end of the screw rod is head end, and the other end is end,
The damping is installed between the head end of screw rod and end, and the external screw thread includes the first screw thread between damping and head end
The second screw thread between damping and end, the outer diameter of second screw thread are respectively less than the outer of the outer diameter and the first screw thread damped
Diameter.
5. Self-locking screw according to claim 4, it is characterised in that: the outer diameter of the damping is greater than or equal to the first screw thread
Outer diameter.
6. Self-locking screw according to claim 1, it is characterised in that: one end of the screw rod is head end, and the other end is end,
It is described to damp the end for being connected to screw rod.
7. a kind of filter using Self-locking screw, which is characterized in that the self-locking spiral shell including any one of such as claim 1-6
Nail, the screw screw-in are installed in the through-hole opened up on a lid.
8. applying the filter of Self-locking screw according to claim 7, it is characterised in that: the screw rod and a metal material
Nut is meshed, and the nut is embedded in the through-hole of cover board.
9. applying the filter of Self-locking screw according to claim 8, it is characterised in that: the damping is embedded in nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920304974.7U CN209626394U (en) | 2019-03-11 | 2019-03-11 | The filter of Self-locking screw and the application screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920304974.7U CN209626394U (en) | 2019-03-11 | 2019-03-11 | The filter of Self-locking screw and the application screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209626394U true CN209626394U (en) | 2019-11-12 |
Family
ID=68456439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920304974.7U Expired - Fee Related CN209626394U (en) | 2019-03-11 | 2019-03-11 | The filter of Self-locking screw and the application screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209626394U (en) |
-
2019
- 2019-03-11 CN CN201920304974.7U patent/CN209626394U/en not_active Expired - Fee Related
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191112 Termination date: 20210311 |