CN205159479U - Cavity filter - Google Patents
Cavity filter Download PDFInfo
- Publication number
- CN205159479U CN205159479U CN201520918612.9U CN201520918612U CN205159479U CN 205159479 U CN205159479 U CN 205159479U CN 201520918612 U CN201520918612 U CN 201520918612U CN 205159479 U CN205159479 U CN 205159479U
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- screw
- cavity
- self
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Abstract
The utility model provides a cavity filter, includes cavity, apron and harmonious auto -lock screw, lap the cavity that is used for closing cap cavity filter, body adoption aluminum product is lapped including the apron body to the apron, 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, harmonious auto -lock screw divide into head and pole portion, auto -lock screw adoption copper forms, screw one end is the head, the other end is pole portion, the head of screw is equipped with screw thread formation screw, this screw thread is equipped with two sets, the diameter L and the pitch P of two upper and lower external threadings are the same, partial diameter between two screw threads is 40% - 70% of pole portion diameter, the utility model discloses a cost and tuning performance ability are compromise to the wave filter.
Description
Technical field
The utility model relates to signal transacting field, particularly relates to a kind of cavity body filter.
Background technology
At present, the signal transacting of cavity body filter has been come by the tuning Self-locking screw on filter cover board usually, the problem of tuning screw process is the problem of signal intermodulation in general, specifically refers to two different frequency signals, superposes and the signal of the new frequency of generation in a certain system.
Current common filter comprises cavity, the parts such as cover plate and tuning Self-locking screw, filter cover board mostly adopts mode at sheet material upper punch pressing hole-forming tubular drill to process tuned window now, it is high that the mode of one side punching press processes screwed hole defect rate, too high manufacturing cost, the tuned window stamped out on the other hand also needs to install tuning swivel nut in addition, tuning swivel nut adopts 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 installed additional in addition on tuned window is also unstable, just easily produce through after a period of time and loosen, 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.
Utility model content
The utility model aims to provide a kind of cavity body filter.
For solving the problems of the technologies described above, the utility model by the following technical solutions, a kind of cavity body filter, comprise cavity, cover plate and tuning Self-locking screw, described cover plate is used for capping cavity filtering cover board body and adopts aluminium, 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, boss inside is provided with screwed hole along its axis direction, described boss inside is also provided with along its axis direction the tuned window connected with screwed hole, this tuned window is relative to the cavity of screwed hole closer to filter, tuned window inside is provided with cyclic spring sheet metal, the diameter of sheet metal is less than the cavity of the diameter device of filter tuner Self-locking screw, cover plate comprises cover board body, , tuning Self-locking screw is divided into head and bar portion, Self-locking screw adopts copper to be made, screw one end is head, the other end is bar portion, tuned radio frequency parameter in the cavity that bar portion stretches into filter, Self-locking screw is fixed on the cover plate of filter by head, apical head is provided with for receiving screwdriver and making tuning screw screw in the receiving channel of cavity body filter inside according to the driving of this screwdriver, the head of screw is provided with screw thread and forms screw, this screw thread is provided with two sections, diameter >=the M4 of the screw that screw thread is formed, be not connected between two sections of screw threads, the diameter L of two sections screw thread is identical with pitch P, upper screw thread and lower screw thread can produce a displacement in the axial direction, this displacement S is set as screw thread originally to the deviation that screw position under the position residing for downward-extension and reality produces, the size of described displacement S is 0.1P-0.8P, section diameter between two screw threads is 40%-70% of bar portion diameter.
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 filter.
As preferably, described cover board body is also provided with cover screw hole, cover plate is by being fixed on cavity through the screw in cover screw hole.
As preferably, fineness≤0.8 of the copper that Self-locking screw adopts, the copper material making Self-locking screw is H65.
As preferably, the spacing between described two screw threads is 0.1-2mm.
As preferably, receiving channel is interior hexagonal shape, and screw head is evenly distributed with six grooves around the part of receiving channel and extends to receiving channel inside.
Relative to traditional cavity body filter, the utility model all adopts aluminium to be used as the material of cover board body, because aluminium is relatively cheap on the one hand, use aluminium to manufacture cover plate and greatly can save material cost, the quality of aluminium is softer on the other hand, processing is got up easily, also save processing cost, consider the actual demand that present filter is tuning, the specification of tuning Self-locking screw is M4-M10 at present, and accordingly, the aluminium extensibility adopted due to cover plate is better, the thickness of cover plate only need control at 0.8-3.5mm, cover plate is light and do not affect result of use, save material cost further, the height of boss also can control at 1-20mm, be enough to the instructions for use meeting Self-locking screw, in addition, cover plate of the present utility model be also provided with that namely tuning screwed hole extend to cavity direction with the boss of the integrated mid portion hollow of cover board body, and the utility model uses boss to replace the combination of traditional tuned window and tuning swivel nut, only need stretch to cover board body because process boss, use lathe just automatically can complete the processing of tuning screwed hole, operation need not be overlapped again additionally 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 utility model also can not waste material while saving operation, and integrated boss is very firm, tuning effect can not be affected, the utility model boss inside is also provided with along its axis direction the tuned window connected with screwed hole, this tuned window is relative to the cavity of screwed hole closer to filter, tuned window inside is provided with cyclic spring sheet metal, the diameter of sheet metal is less than the diameter of filter tuner Self-locking screw, electric capacity is formed between the inwall of annular sheet metal and tuning screw, make effect cover plate being introduced capacity plate antenna, reduce the current density of tuning screw and cover plate binding site, reduce the inter-modulated signal level because tuning screw and cover plate loose contact produce, improve the intermodulation first-pass yield of cavity body filter, and adopt flexible sheet metal to be depart from the front end of screw when screwed hole enters tuning porose area to squeeze elastic sheet metal downwards, sheet metal is because the effect of elastic force inwardly extrudes and can pin Self-locking screw better, consider the factor of cost and efficiency, preferably adopt cyclic spring copper sheet further, because cost is lower on the one hand for copper, there is good elasticity on the other hand, the utility model have also been devised a kind of tuning Self-locking screw newly, the head of screw is provided with screw thread and forms screw, this screw thread is provided with two sections, according to tuning range and the actual user demand of cavity body filter, diameter >=the M4 of the screw that the utility model screw thread is formed, the Altitude control of corresponding screw is at 1-20mm, two sections of screw threads of the present utility model are not connected, because the utility model adopts copper to make screw, copper itself has good conductivity and ductility, the diameter L of two screw threads of the utility model design is identical with pitch P again, upper screw thread and lower screw thread can produce a displacement in the axial direction, this displacement S is set as screw thread originally to the deviation that screw position under the position residing for downward-extension and reality produces, the size of described displacement S is 0.1P-0.8P, due to the existence of this side-play amount, screwdriver orders about the power that in screw screw-in cavity body filter process, screw head is subject to and is just no longer uniformly distributed, because two screw threads form a slight dislocation, such screwdriver drives screw to screw in screw head in the process of cavity body filter inside can produce slight deformation, because the power that screw head is subject to not is equally distributed, have certain departing from, and the screw thread of two dislocation can produce the cavity that the restoring force recovering original shape props up filter centered by the part between two screw threads after being subject to the extruding force of screwdriver, thus complete the self-locking of screw, simultaneously, consider actual self-locking effect, section diameter between screw thread is 40%-70% of bar portion diameter, because this section diameter has the danger of fracture time narrow, the restoring force of two screw threads has counteracting to a certain extent simultaneously, and this section diameter wide time two screw threads extruding forces of producing inadequate, self-locking DeGrain, in addition, the copper material that the utility model is used for manufacturing screw is H65, neither too hard, nor too soft, its copper content also can meet tuning demand, copper material fineness≤0.8, ensure the coefficient of friction of screw surface and filter cover board, guarantee self-locking effect, tuning effect can not be affected again simultaneously, consider height and the diameter of screw, spacing between two screw threads controls at 0.1-2mm, and the receiving channel of screw head is interior hexagonal shape, screw head is evenly distributed with six grooves around the part of receiving channel and extends to receiving channel inside, the top deformation of the more convenient screw of this shape is to obtain better self-locking effect.
Accompanying drawing explanation
The schematic diagram of Fig. 1 to be the utility model be embodiment;
Fig. 2 is the schematic diagram of the utility model cover plate;
Fig. 3 is the schematic diagram of the tuning screwed hole of the utility model;
Fig. 4 is the structural representation of the tuning Self-locking screw of the utility model;
Fig. 5 is the partial enlarged drawing of the tuning Self-locking screw of the utility model;
Fig. 6 is the cutaway view of the tuning Self-locking screw of the utility model.
In figure: 1, cover board body; 2, boss; 3, screwed hole; 4, tuned window; 5, cover screw hole; 6, head; 7, bar portion; 8, receiving channel; 9, screw thread; 91, upper screw thread; 92, lower screw thread; 10, cavity; 11, Self-locking screw; 12, cyclic spring sheet metal.
Embodiment
Be described below in detail embodiment of the present utility model, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the utility model, and can not being interpreted as restriction of the present utility model.
In description of the present utility model, unless otherwise prescribed and limit, it should be noted that, term " installation ", " being connected ", " connection " should be interpreted broadly, such as, can be mechanical connection or electrical connection, also can be the connection of two element internals, can be directly be connected, also indirectly can be connected 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. 6, a kind of cavity body filter according to the utility model embodiment is described, comprise cavity 10, cover plate and tuning Self-locking screw 11, described cover plate is used for the cavity 10 of capping cavity body filter, cover plate comprises cover board body 1, cover board body 1 adopts aluminium, described cover board body 1 is provided with tuning screwed hole, tuning screwed hole is specially the boss 2 integrated with cover board body 1 extended to cavity direction, the mid portion hollow of boss 2, boss 2 inside is provided with screwed hole 3 along its axis direction, described boss 2 inside is also provided with the tuned window 4 connected with screwed hole 3 along its axis direction, this tuned window 4 is relative to the cavity of screwed hole 3 closer to filter, tuned window 4 inside is provided with cyclic spring sheet metal 12, the diameter of sheet metal 12 is less than the diameter of filter tuner Self-locking screw 11, tuning Self-locking screw 11 is divided into head 6 and bar portion 7, Self-locking screw 11 adopts copper to be made, screw 11 one end is head 6, the other end is bar portion 7, tuned radio frequency parameter in the cavity 10 that bar portion 7 stretches into filter, Self-locking screw 11 is fixed on the cover plate of filter by head 6, head 6 top is provided with for receiving screwdriver and making tuning screw 11 screw in the receiving channel 8 of cavity body filter inside according to the driving of this screwdriver, the head 6 of screw is provided with screw thread 9 and forms screw, this screw thread 9 is provided with two sections, diameter >=the M4 of the screw that screw thread 9 is formed, be not connected between two sections of screw threads 9, the diameter L of two sections screw thread 9 is identical with pitch P, upper screw thread 91 can produce a displacement in the axial direction with lower screw thread 92, this displacement S is set as the deviation that screw thread 91 originally produced to screw thread 92 position under the position residing for downward-extension and reality, the size of described displacement S is 0.1P-0.8P, section diameter between two screw threads 9 is 40%-70% of bar portion diameter.
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 3 is formed is suitable for the tuning Self-locking screw of M4-M10 specification.
As preferably, described cyclic spring sheet metal 12 is cyclic spring copper sheet.
As preferably, described cyclic spring sheet metal 12 contacts with the tuning Self-locking screw 11 of filter.
As preferably, described cover board body 1 is also provided with cover screw hole 5, cover plate is by being fixed on cavity through the screw in cover screw hole.
As preferably, fineness≤0.8 of the copper that Self-locking screw 11 adopts, the copper material making Self-locking screw 11 is H65.
As preferably, the spacing between described two screw threads 9 is 0.1-2mm.
As preferably, receiving channel 8 is interior hexagonal shape, and screw 11 top is evenly distributed with six grooves around the part of receiving channel 8, and to extend to receiving channel 8 inner.
Relative to traditional cavity body filter, the utility model all adopts aluminium to be used as the material of cover board body, because aluminium is relatively cheap on the one hand, use aluminium to manufacture cover plate and greatly can save material cost, the quality of aluminium is softer on the other hand, processing is got up easily, also save processing cost, consider the actual demand that present filter is tuning, the specification of tuning Self-locking screw is M4-M10 at present, and accordingly, the aluminium extensibility adopted due to cover plate is better, the thickness of cover plate only need control at 0.8-3.5mm, cover plate is light and do not affect result of use, save material cost further, the height of boss also can control at 1-20mm, be enough to the instructions for use meeting Self-locking screw, in addition, cover plate of the present utility model be also provided with that namely tuning screwed hole extend to cavity direction with the boss of the integrated mid portion hollow of cover board body, and the utility model uses boss to replace the combination of traditional tuned window and tuning swivel nut, only need stretch to cover board body because process boss, use lathe just automatically can complete the processing of tuning screwed hole, operation need not be overlapped again additionally 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 utility model also can not waste material while saving operation, and integrated boss is very firm, tuning effect can not be affected, the utility model boss inside is also provided with along its axis direction the tuned window connected with screwed hole, this tuned window is relative to the cavity of screwed hole closer to filter, tuned window inside is provided with cyclic spring sheet metal, the diameter of sheet metal is less than the diameter of filter tuner Self-locking screw, electric capacity is formed between the inwall of annular sheet metal and tuning screw, make effect cover plate being introduced capacity plate antenna, reduce the current density of tuning screw and cover plate binding site, reduce the inter-modulated signal level because tuning screw and cover plate loose contact produce, improve the intermodulation first-pass yield of cavity body filter, and adopt flexible sheet metal to be depart from the front end of screw when screwed hole enters tuning porose area to squeeze elastic sheet metal downwards, sheet metal is because the effect of elastic force inwardly extrudes and can pin Self-locking screw better, consider the factor of cost and efficiency, preferably adopt cyclic spring copper sheet further, because cost is lower on the one hand for copper, there is good elasticity on the other hand, the utility model have also been devised a kind of tuning Self-locking screw newly, the head of screw is provided with screw thread and forms screw, this screw thread is provided with two sections, according to tuning range and the actual user demand of cavity body filter, diameter >=the M4 of the screw that the utility model screw thread is formed, the Altitude control of corresponding screw is at 1-20mm, two sections of screw threads of the present utility model are not connected, because the utility model adopts copper to make screw, copper itself has good conductivity and ductility, the diameter L of two screw threads of the utility model design is identical with pitch P again, upper screw thread and lower screw thread can produce a displacement in the axial direction, this displacement S is set as screw thread originally to the deviation that screw position under the position residing for downward-extension and reality produces, the size of described displacement S is 0.1P-0.8P, due to the existence of this side-play amount, screwdriver orders about the power that in screw screw-in cavity body filter process, screw head is subject to and is just no longer uniformly distributed, because two screw threads form a slight dislocation, such screwdriver drives screw to screw in screw head in the process of cavity body filter inside can produce slight deformation, because the power that screw head is subject to not is equally distributed, have certain departing from, and the screw thread of two dislocation can produce the cavity that the restoring force recovering original shape props up filter centered by the part between two screw threads after being subject to the extruding force of screwdriver, thus complete the self-locking of screw, simultaneously, consider actual self-locking effect, section diameter between screw thread is 40%-70% of bar portion diameter, because this section diameter has the danger of fracture time narrow, the restoring force of two screw threads has counteracting to a certain extent simultaneously, and this section diameter wide time two screw threads extruding forces of producing inadequate, self-locking DeGrain, in addition, the copper material that the utility model is used for manufacturing screw is H65, neither too hard, nor too soft, its copper content also can meet tuning demand, copper material fineness≤0.8, ensure the coefficient of friction of screw surface and filter cover board, guarantee self-locking effect, tuning effect can not be affected again simultaneously, consider height and the diameter of screw, spacing between two screw threads controls at 0.1-2mm, and the receiving channel of screw head is interior hexagonal shape, screw head is evenly distributed with six grooves around the part of receiving channel and extends to receiving channel inside, the top deformation of the more convenient screw of this shape is to obtain better self-locking effect.
In the description of this specification, specific features, structure, material or feature that the description of reference term " embodiment ", " example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present utility model or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
Although illustrate and described embodiment of the present utility model, those having ordinary skill in the art will appreciate that: can carry out multiple change, amendment, replacement and modification to these embodiments when not departing from principle of the present utility model and aim, scope of the present utility model is by claim and equivalents thereof.
Claims (10)
1. a cavity body filter, comprise cavity, cover plate and tuning Self-locking screw, described cover plate is used for the cavity of capping cavity body filter, cover plate comprises cover board body, it is characterized in that, cover board body adopts aluminium, 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, boss inside is provided with screwed hole along its axis direction, described boss inside is also provided with along its axis direction the tuned window connected with screwed hole, this tuned window is relative to the cavity of screwed hole closer to filter, tuned window inside is provided with cyclic spring sheet metal, the diameter of sheet metal is less than the diameter of filter tuner Self-locking screw, tuning Self-locking screw is divided into head and bar portion, Self-locking screw adopts copper to be made, screw one end is head, the other end is bar portion, tuned radio frequency parameter in the cavity that bar portion stretches into filter, Self-locking screw is fixed on the cover plate of filter by head, apical head is provided with for receiving screwdriver and making tuning screw screw in the receiving channel of cavity body filter inside according to the driving of this screwdriver, the head of screw is provided with screw thread and forms screw, this screw thread is provided with two sections, diameter >=the M4 of the screw that screw thread is formed, be not connected between two sections of screw threads, the diameter L of two sections screw thread is identical with pitch P, upper screw thread and lower screw thread can produce a displacement in the axial direction, this displacement S is set as screw thread originally to the deviation that screw position under the position residing for downward-extension and reality produces, the size of described displacement S is 0.1P-0.8P, section diameter between two screw threads is 40%-70% of bar portion diameter.
2. cavity body filter according to claim 1, is characterized in that, the thickness of described cover board body is 0.8-3.5mm.
3. according to cavity body filter according to claim 1, it is characterized in that, the height of described boss is 1-20mm.
4. the cavity body filter according to Claims 2 or 3, is characterized 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.
5. cavity body filter according to claim 1, is characterized in that, described cyclic spring sheet metal is cyclic spring copper sheet.
6. cavity body filter according to claim 1 or 5, it is characterized in that, described cyclic spring sheet metal contacts with the tuning Self-locking screw of filter.
7. cavity body filter according to claim 1, is characterized in that, described cover board body is also provided with cover screw hole, and cover plate is by being fixed on cavity through the screw in cover screw hole.
8. cavity body filter according to claim 1, is characterized in that, fineness≤0.8 of the copper that Self-locking screw adopts, copper material is H65.
9. cavity body filter according to claim 1, is characterized in that, the spacing between Self-locking screw two screw threads is 0.1-2mm.
10. cavity body filter according to claim 1, is characterized in that, the receiving channel of Self-locking screw is interior hexagonal shape, and screw head is evenly distributed with six grooves around the part of receiving channel and extends to receiving channel inside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520918612.9U CN205159479U (en) | 2015-11-18 | 2015-11-18 | Cavity filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520918612.9U CN205159479U (en) | 2015-11-18 | 2015-11-18 | Cavity filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205159479U true CN205159479U (en) | 2016-04-13 |
Family
ID=55695138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520918612.9U Withdrawn - After Issue CN205159479U (en) | 2015-11-18 | 2015-11-18 | Cavity filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205159479U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105304987A (en) * | 2015-11-18 | 2016-02-03 | 强胜精密机械(苏州)有限公司 | Cavity filter |
| CN110600844A (en) * | 2019-09-26 | 2019-12-20 | 东莞市华尔通信有限责任公司 | Press-riveting nut and filter thereof |
-
2015
- 2015-11-18 CN CN201520918612.9U patent/CN205159479U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105304987A (en) * | 2015-11-18 | 2016-02-03 | 强胜精密机械(苏州)有限公司 | Cavity filter |
| CN105304987B (en) * | 2015-11-18 | 2018-10-12 | 强胜精密机械(苏州)有限公司 | A kind of cavity body filter |
| CN110600844A (en) * | 2019-09-26 | 2019-12-20 | 东莞市华尔通信有限责任公司 | Press-riveting nut and filter thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160413 Effective date of abandoning: 20181012 |
|
| AV01 | Patent right actively abandoned |