CN104577266A - Insulation support column installation structure for filter - Google Patents
Insulation support column installation structure for filter Download PDFInfo
- Publication number
- CN104577266A CN104577266A CN201410848177.7A CN201410848177A CN104577266A CN 104577266 A CN104577266 A CN 104577266A CN 201410848177 A CN201410848177 A CN 201410848177A CN 104577266 A CN104577266 A CN 104577266A
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- Prior art keywords
- boss
- filter
- insulating supporting
- supporting post
- cover plate
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Abstract
The invention is suitable for the field of communication devices and provides an insulation support column installation structure for a filter. The insulation support column installation structure for the filter comprises a chamber installation groove, a cover plate, an insulation support column arranged in the chamber installation groove and a connecting rod, and the connecting rod passes through mounting holes which are formed in the insulation support column and is fixed in the mounting holes. The insulation support column installation structure for the filter is characterized in that the insulation support column comprises a column body and a boss, the boss is arranged on the top end face of the column body, and the section and height of the boss are smaller than that of the column body; when the cover plate is not installed, the boss is higher than the top surface of a chamber; when the cover plate is fixed on the chamber, the cover plate is in elastic contact with the boss, and the boss produces elastic deformation. By means of the insulation support column installation structure for the filter, the problem that a product is unable to use due to the fact that a large difference exists between the coefficient of thermal expansion of the polytef material insulation support column and a metal material cavity, looseness occurs due to the fact that a gap exists between the insulation support column and the cover plate under a low temperature condition, and the cover plate is jacked up by the insulation support column under a high temperature condition is solved.
Description
Technical field
The invention belongs to communication equipment field, particularly relate to a kind of insulating supporting post mounting structure of filter.
Background technology
At present, be that the part of raw material is widely used in microwave industry with polytetrafluoroethylene, as in filter, the insulating supporting post manufactured by polytetrafluoroethylmaterial material is for the connecting rod in fixed filters.In prior art, insulating supporting post is generally designed to cylinder, and the metallic cavity that cover plate is fixed on filter contacts with the top end face of insulating supporting post.
Because teflon insulation support column differs larger with the thermal coefficient of expansion of metallic cavity, under low temperature using state, as shown in Figure 1, support column 2 ' sink, gap is formed with cover plate 1 ', support column 2 ' is loosened with cavity 3 ' internal engagement, causes connecting rod 4 ' to move down relative to cavity 3 ', under applied at elevated temperature state, as shown in Figure 2, support column 2 ' excessive expansion, by cover plate 1 ' jack-up, causes connecting rod 4 ' to move up relative to cavity 3 '.Connecting rod connects the equipment such as the resonator in filter, in use the link position required precision of connecting rod and resonator is high, different link positions causes the performance parameters of filter different, after connecting rod 4 ' moves relative to cavity 3 ' position, the electric parameter of filter changes, the using function that product can not be brought into normal play.
Namely in prior art, because polytetrafluoroethylmaterial material insulating supporting post differs larger with metal material cavity thermal coefficient of expansion, under low-temperature condition, insulating supporting post and cover plate produce gap and loosen, and under the condition of high temperature, insulating supporting post is by cover plate jack-up, causes product normally to use.
Summary of the invention
The invention provides a kind of insulating supporting post mounting structure of filter, be intended to solve because polytetrafluoroethylmaterial material insulating supporting post differs larger with metal material cavity thermal coefficient of expansion, under low-temperature condition, insulating supporting post and cover plate produce gap and loosen, under the condition of high temperature, insulating supporting post is by cover plate jack-up, causes the problem that product cannot normally use.
The present invention realizes like this, a kind of insulating supporting post mounting structure of filter, comprise cavity mounting groove, cover plate, be positioned over the insulating supporting post of described cavity mounting groove, connecting rod, described connecting rod passes and is fixed on the installing hole of described insulating supporting post, it is characterized in that, described insulating supporting post comprises cylinder and boss, described boss is arranged at described cylinder top end face, the cross section of cylinder described in the cross section of described boss and aspect ratio and highly little, when described cover plate is not installed, described boss exceeds cavity end face, when described cover plate is fixed on described cavity, Elastic Contact is become with described boss, described boss produces elastic deformation.
Further, described cylinder is cylinder.
Further, described boss and the Elastic Contact of described cover plate are that face contacts.
Further, described boss is cylinder.
Further, described boss diameter is 10% ~ 20% of described column diameter.
Further, described boss height is 5% ~ 10% of described height of column.
Further, described boss is arranged on the center of described cylinder top end face.
Further, described boss quantity is one.
Further, described filter cavity material is aluminium alloy.
Further, described insulating supporting column material is polytetrafluoroethylene.
The insulating supporting post mounting structure of filter provided by the invention, at insulating supporting post cylinder top end face, boss is set, by the elastic deformation of polytetrafluoroethylmaterial material insulating supporting post, whole support column part is fixed between metallic cavity and cover plate, under high/low temperature using state, insulating supporting post and cavity and the dimensional discrepancy that produce inconsistent due to thermal coefficient of expansion are compensated by the elastic deformation produced between the boss of insulating supporting capital end face and cover plate, thus ensure the proper engagement of insulating supporting post and cavity, guarantee the normal use of product.
Accompanying drawing explanation
Fig. 1 is the schematic diagram that the insulating supporting post that provides of prior art and cover plate produce gap;
Fig. 2 is that the insulating supporting post that provides of prior art is by the schematic diagram of cover plate jack-up;
Fig. 3 is the insulating supporting post mounting structure schematic diagram of filter provided by the invention;
Fig. 4 is the uninstalled view of insulating supporting post mounting structure cover plate of filter;
Fig. 5 is the schematic perspective view of insulating supporting post in the insulating supporting post mounting structure of filter;
Fig. 6 is the perspective exploded view of the insulating supporting post mounting structure of filter.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
The Reference numeral of Fig. 3 to Fig. 6 is:
Cover plate 1, insulating supporting post 2, cavity 3, connecting rod 4, cavity mounting groove 5, boss 21, cylinder 22, installing hole 221, chamfering 222.
As indicated at 3, columniform insulating supporting post 2 is installed in the cavity mounting groove 5 of cavity 3, insulating supporting post 2 and cavity mounting groove 5 are interference fit, cylindrical connecting rod 4 is through the installing hole 221 of insulating supporting post 2, and be fixed in cavity with installing hole 221 interference fit, the top end face of insulating supporting post 2 is processed with the boss 21 of a cylindrical shape, and boss 21 upper surface contacts with cover plate 1, and cover plate 1 is fixed on cavity 3 top by modes such as screws.
As shown in Figure 4, when cover plate 1 is not installed fixing, insulating supporting post 2 is higher than cavity mounting groove 5, boss 21 stretches out the end face of cavity 3, like this, when cover plate 1 is fixed on cavity 3 by screw, cover plate 1 will apply a pressure vertical with boss 2 contact-making surface to the boss 21 of insulating supporting post 2, make boss 21 produce elastic deformation, the boss 2 in Fig. 3 is pressurized and produces elastically-deformable state.Like this, when filter is used in the larger operational environment of high-low temperature difference, as 40 degrees below zero to 85 is spent, because insulating supporting post 2 and cavity 3 are not commaterials, the gap produced at low temperatures that it is different by thermal coefficient of expansion and cause and the elongation at high temperature produced can be compensated by the elastic deformation of boss 2, make insulating supporting post 2 and cover plate 1 remain stressed Elastic Contact state, the accuracy of the fastness of connecting rod 4 in cavity and position is protected.In the present embodiment, insulating supporting post 2 material is polytetrafluoroethylene, and cavity 3 material is aluminium alloy, and polytetrafluoroethylene has good dielectric property and workability can be widely used in insulating part in filter.Be appreciated that in other embodiments of the invention, insulating supporting post 2 can be other insulating material met the demands.
As shown in Figure 5, the cylinder 22 of insulating supporting post 2 and boss 21 are an entirety, boss 21 is cylindrical, be plane with cover plate 5 contact-making surface, this contact will ensure that cylinder 22 Impact direction is perpendicular to cylinder end face, to ensure that cylinder can not deflection, simultaneously, boss 21 is arranged at the center of cylinder 22 top end face, makes pressure act on the center of cylinder and can not make cylinder deflection equally, to ensure that the installation site of connecting rod in cavity also can not produce deflection.Be appreciated that in other embodiments of the invention, boss can be ensure other shape of its function, as square etc.Be provided with chamfering 222 bottom insulating supporting post 2, be convenient to insulating supporting post 2 and be installed in cavity mounting groove 5.
In the present embodiment, the diameter of boss 21 is much smaller than the diameter of cylinder 22, when the pressure of such cover plate 5 passes to insulating supporting post 2, because the lifting surface area of boss 21 is less than the lifting surface area of cylinder 22, then pressure suffered by boss 21 is large more than pressure suffered by cylinder 22, the deformation quantity that the deformation quantity that boss 21 produces produces much larger than cylinder 22, then the gap caused by thermal coefficient of expansion difference or elongation compensate primarily of boss 21.General, the diameter of boss 21 is 10% ~ 20% of cylinder 22 diameter, and such as, when the diameter of cylinder is 20mm, boss diameter can be 2mm, 3mm, 4mm etc.; General, the height of boss 21 is 5% ~ 10% of cylinder 22 height, and such as, when the height of cylinder is 30mm, boss height can be 1.5mm, 2.25mm, 3mm etc.In the present embodiment, when cylinder 22 diameter be 8mm length is 10mm, consider the convenience of processing simultaneously, boss 21 diameter be generally 1 ~ 2mm, be highly 0.5 ~ 1mm, be appreciated that diameter and the height of boss can carry out the adaptive design with cylinder according to the needs of filter in actual production.
Preferably, the quantity of boss 21 is one, is appreciated that in other embodiments of the invention, and the quantity of boss 21 can be the multiple of content with funtion, is symmetrically arranged in the top end face of insulating supporting post 2.
Figure 6 shows that the structure chart of decomposing state, cavity mounting groove 5 is communicated with the groove placing connecting rod, cavity mounting groove 5 is circular arc with the auxiliary section of insulating supporting post 2 simultaneously, with insulating supporting post 2 interference fit, by insulating supporting post 2 and be fixed in the cavity of filter, to ensure the positional precision of connecting rod through the connecting rod 4 of insulating supporting post 2.
The insulating supporting post mounting structure of a kind of filter provided by the invention, diameter is set at insulating supporting post cylinder top end face and is highly less than the boss of column diameter and height, boss exceeds the end face of filter cavity, by the elastic deformation of polytetrafluoroethylmaterial material boss, whole insulating supporting post part is fixed between cavity and cover plate, under high/low temperature using state, the elastic deformation that insulating supporting post and cavity and the dimensional discrepancy that produce inconsistent due to thermal coefficient of expansion are produced by the pressure of cover plate by boss compensates, thus ensure the proper engagement of insulating supporting post and cavity, ensure that the position of connecting rod in filter cavity can not change, guarantee the normal use of product.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the insulating supporting post mounting structure of a filter, comprise cavity mounting groove, cover plate, be positioned over the insulating supporting post of described cavity mounting groove, connecting rod, described connecting rod passes and is fixed on the installing hole of described insulating supporting post, it is characterized in that, described insulating supporting post comprises cylinder and boss, described boss is arranged at described cylinder top end face, the cross section of cylinder described in the cross section of described boss and aspect ratio and highly little, when described cover plate is not installed, described boss exceeds cavity end face, when described cover plate is fixed on described cavity, Elastic Contact is become with described boss, described boss produces elastic deformation.
2. the insulating supporting post of filter as claimed in claim 1, it is characterized in that, described cylinder is cylinder.
3. the insulating supporting post of filter as claimed in claim 1, it is characterized in that, described boss and the Elastic Contact of described cover plate are that face contacts.
4. the insulating supporting post of filter as claimed in claim 2, it is characterized in that, described boss is cylinder.
5. the insulating supporting post of filter as claimed in claim 4, it is characterized in that, described boss diameter is 10% ~ 20% of described column diameter.
6. the insulating supporting post of filter as claimed in claim 5, it is characterized in that, described boss height is 5% ~ 10% of described height of column.
7. the insulating supporting post of filter as claimed in claim 1, it is characterized in that, described boss is arranged on the center of described cylinder top end face.
8. the insulating supporting post of filter as claimed in claim 1, it is characterized in that, described boss quantity is one.
9. the insulating supporting post of filter as claimed in claim 1, it is characterized in that, described filter cavity material is aluminium alloy.
10. the insulating supporting post of filter as claimed in claim 1, it is characterized in that, described insulating supporting column material is polytetrafluoroethylene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410848177.7A CN104577266B (en) | 2014-12-29 | 2014-12-29 | A kind of insulating supporting post mounting structure of wave filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410848177.7A CN104577266B (en) | 2014-12-29 | 2014-12-29 | A kind of insulating supporting post mounting structure of wave filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104577266A true CN104577266A (en) | 2015-04-29 |
| CN104577266B CN104577266B (en) | 2017-11-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410848177.7A Active CN104577266B (en) | 2014-12-29 | 2014-12-29 | A kind of insulating supporting post mounting structure of wave filter |
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| CN (1) | CN104577266B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107104257A (en) * | 2017-06-15 | 2017-08-29 | 深圳市国人射频通信有限公司 | Integrated adjustable capacitive cross coupling assembly and cavity body filter |
| CN111384566A (en) * | 2018-12-29 | 2020-07-07 | 深圳市大富科技股份有限公司 | Dielectric resonator, dielectric filter and communication equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202839932U (en) * | 2012-10-18 | 2013-03-27 | 宁波泰立电子科技有限公司 | Single and double resonance mode structure of TM (transverse magnetic) medium resonator |
| CN203386871U (en) * | 2013-06-04 | 2014-01-08 | 深圳市大富科技股份有限公司 | A cavity filter, a low pass filter, and a signal transmit-receive apparatus |
| CN204289662U (en) * | 2014-12-29 | 2015-04-22 | 宁波华瓷通信技术有限公司 | A kind of insulating supporting post mounting structure of filter |
-
2014
- 2014-12-29 CN CN201410848177.7A patent/CN104577266B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202839932U (en) * | 2012-10-18 | 2013-03-27 | 宁波泰立电子科技有限公司 | Single and double resonance mode structure of TM (transverse magnetic) medium resonator |
| CN203386871U (en) * | 2013-06-04 | 2014-01-08 | 深圳市大富科技股份有限公司 | A cavity filter, a low pass filter, and a signal transmit-receive apparatus |
| CN204289662U (en) * | 2014-12-29 | 2015-04-22 | 宁波华瓷通信技术有限公司 | A kind of insulating supporting post mounting structure of filter |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107104257A (en) * | 2017-06-15 | 2017-08-29 | 深圳市国人射频通信有限公司 | Integrated adjustable capacitive cross coupling assembly and cavity body filter |
| CN111384566A (en) * | 2018-12-29 | 2020-07-07 | 深圳市大富科技股份有限公司 | Dielectric resonator, dielectric filter and communication equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104577266B (en) | 2017-11-03 |
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Denomination of invention: Insulation support column installation structure for filter Effective date of registration: 20180521 Granted publication date: 20171103 Pledgee: Bank of China Limited by Share Ltd Ningbo Yinzhou branch Pledgor: NINGBO HUACI COMMUNICATION TECHNOLOGY CO., LTD. Registration number: 2018330000105 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20201030 Granted publication date: 20171103 Pledgee: Bank of China Limited by Share Ltd. Ningbo Yinzhou branch Pledgor: NINGBO HUACI COMMUNICATION TECHNOLOGY Co.,Ltd. Registration number: 2018330000105 |
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| CP03 | Change of name, title or address | ||
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Address after: 315000 floor 1-2, building 8, 818 Jinyuan Road, Yinzhou District, Ningbo City, Zhejiang Province Patentee after: Ningbo Huaci Communication Technology Co.,Ltd. Address before: 2 / F, building 3, 818 Jinyuan Road, Yinzhou investment and entrepreneurship center, Ningbo, Zhejiang 315000 Patentee before: NINGBO HUACI COMMUNICATION TECHNOLOGY Co.,Ltd. |