CN202871952U - Cavity filter capable of improving power capacity - Google Patents

Cavity filter capable of improving power capacity Download PDF

Info

Publication number
CN202871952U
CN202871952U CN 201220466205 CN201220466205U CN202871952U CN 202871952 U CN202871952 U CN 202871952U CN 201220466205 CN201220466205 CN 201220466205 CN 201220466205 U CN201220466205 U CN 201220466205U CN 202871952 U CN202871952 U CN 202871952U
Authority
CN
China
Prior art keywords
cavity
cover plate
resonant rod
adjustment screw
power capacity
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN 201220466205
Other languages
Chinese (zh)
Inventor
王东旭
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CHENGDU MARNOW TECHNOLOGY Co Ltd
Original Assignee
CHENGDU MARNOW TECHNOLOGY Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by CHENGDU MARNOW TECHNOLOGY Co Ltd filed Critical CHENGDU MARNOW TECHNOLOGY Co Ltd
Priority to CN 201220466205 priority Critical patent/CN202871952U/en
Application granted granted Critical
Publication of CN202871952U publication Critical patent/CN202871952U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The utility model discloses a cavity filter capable of improving the power capacity. The cavity filter comprises a cavity, a cover plate, a resonance rod and an adjustment screw, wherein the adjustment screw passes through the cover plate and has a lower end arranged in an inner hole of the resonance rod; the cover plate is arranged on the cavity and provided with a through hole and a projection part; the through hole penetrates the projection part of the cover plate and provided with internal threads on the inner wall; an upper part of the adjustment screw is provided with external threads, and the adjustment screw is threadingly connected with the cover plate; a mounting table is arranged at the bottom of the cavity; the resonance rod is fixed on the mounting table of the cavity by screws; and the resonance rod is spaced from the cover plate. The cavity filter can save the maternal, reduce the cost and is not easy to be deformed, and the power capacity of the cavity filter is improved.

Description

Can improve the cavity body filter of power capacity
Technical field
The utility model relates to a kind of communication equipment, particularly a kind of cavity body filter that improves power capacity.
Background technology
Cavity body filter is widely used in the communications field as a kind of frequency-selecting equipment, field of radio frequency communication especially, and in the base station, filter is used for selecting signal of communication, clutter or interference signal that the filtering communication signal frequency is outer.In the prior art, cavity body filter comprises cavity, resonant rod, cover plate and the adjustment screw of being located on the cover plate, resonant rod is arranged in the cavity, adjustment screw is passed cover plate, its lower end is arranged in the endoporus of resonant rod, cover plate is arranged on the cavity, and for guaranteeing the fastness of adjustment screw and cover plate, the thickness of cover plate is often very thick, the waste material, production cost is high, when resonant rod is fixed by screws on the cavity, because cavity bottom is thinner, deform easily, along with the development of science and technology, the performance of cavity body filter improves constantly, and is also important all the more for the requirement of power capacity.Existing cavity body filter can not improve its power capacity, can not satisfy people's needs.
Summary of the invention
The purpose of this utility model just is to provide a kind of saving material, reduces cost, and the on-deformable cavity body filter that improves power capacity can effectively solve the problem of above-mentioned existence.
To achieve these goals, the technical solution adopted in the utility model is such: the cavity body filter that improves power capacity of the present utility model, comprise cavity, cover plate, resonant rod and adjustment screw, resonant rod is arranged in the cavity, adjustment screw is passed cover plate, its lower end is arranged in the endoporus of resonant rod, cover plate is arranged on the cavity, described cover plate is provided with through hole, cover plate is provided with lug boss, through hole runs through the lug boss of cover plate, and through-hole wall is provided with internal thread, and described adjustment screw top is provided with external screw thread, adjustment screw is threaded with cover plate, described cavity bottom is provided with erecting bed, and resonant rod is fixed by screws on the erecting bed of cavity, is provided with spacing between resonant rod and the cover plate.
As preferably, described adjustment screw bottom is polished rod, the circular arc of bottom surface for protruding.
As preferably, the aperture of described resonant rod outer and endoporus is provided with 45 degree roundings.
As preferably, the end face of described erecting bed is provided with boss, and the bottom of resonant rod is provided with the counterbore that is complementary with boss, and resonant rod is socketed on the boss by counterbore.
As preferably, the spacing between described resonant rod and the cover plate is 0.3mm-1mm.
Compared with prior art, the utility model has the advantage of: by lug boss on the cover board is set, under the prerequisite of not thickening cover plate, also can guarantee the fastness between adjustment screw and the cover plate, reduce the thickness of cover plate, directly reduce material cost, thereby the reduction product cost arranges erecting bed, and resonant rod is fixed by screws on the erecting bed, in the time of can avoiding the fixing resonance bar, cause cavity bottom to deform, make reliably contact between resonant rod and the cavity, the spacing between resonant rod and the cover plate is 0.3mm-1mm, the distance of resonant rod end face and cover plate is larger, its power capacity is higher, improves technical target of the product, and the adjustment screw bottom is polished rod, electric discharge phenomena have been avoided, the aperture of resonant rod outer and endoporus is provided with 45 degree roundings, when resonant rod is installed in the cavity, assembles more convenient, avoid occuring electric discharge phenomena, produce spark, cause short circuit, resonant rod is socketed on the boss by counterbore, be convenient to the location, the convenient installation.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
Referring to Fig. 1, the cavity body filter that improves power capacity of the present utility model, comprise cavity 1, cover plate 2, resonant rod 3 and adjustment screw 4, resonant rod 3 is arranged in the cavity 1, adjustment screw 4 is passed cover plate 2, its lower end is arranged in the endoporus of resonant rod 3, cover plate 2 is arranged on the cavity 1, described cover plate 2 is provided with through hole, cover plate 2 is provided with lug boss, through hole runs through the lug boss 5 of cover plate 2, through-hole wall is provided with internal thread, described adjustment screw 4 tops are provided with external screw thread, adjustment screw 4 is threaded with cover plate 2, described cavity 1 bottom is provided with erecting bed 6, resonant rod 3 is fixed on the erecting bed 6 of cavity by screw 7, be provided with spacing between resonant rod 3 and the cover plate 2, described adjustment screw 4 bottoms are polished rod, the circular arc of bottom surface for protruding, and the aperture of described resonant rod 3 outers and endoporus is provided with 45 degree roundings 8, the bottom surface of the end face of described resonant rod 3 and cover plate 2 is provided with spacing, spacing is more than or equal to 0.3mm, and the end face of described erecting bed 6 is provided with boss, and the bottom of resonant rod 3 is provided with the counterbore that is complementary with boss, resonant rod 3 is socketed on the boss by counterbore, and the spacing between described resonant rod 3 and the cover plate 2 is 0.3mm-1mm.。
By at cover plate 2 lug boss 5 being set, under the prerequisite of not thickening cover plate 2, also can guarantee the fastness between adjustment screw 4 and the cover plate 2, reduce the thickness of cover plate 2, directly reduce material cost, thereby reduce product cost, erecting bed 6 is set, resonant rod 3 is fixed on the erecting bed 6 by screw 7, in the time of can avoiding fixing resonance bar 3, causes cavity 1 bottom to deform, make reliably contact between resonant rod 3 and the cavity 1, spacing between resonant rod 3 and the cover plate 2 is 0.3mm-1mm, and the distance of resonant rod 3 end faces and cover plate 2 is larger, and its power capacity is higher, improve technical target of the product, adjustment screw 4 bottoms are polished rod, have avoided electric discharge phenomena, and the aperture of resonant rod 3 outers and endoporus is provided with 45 degree roundings 8, when resonant rod 3 is installed in the cavity 1, assemble more conveniently, avoid occuring electric discharge phenomena, produce spark, cause short circuit, resonant rod 3 is socketed on the boss by counterbore, is convenient to the location, the convenient installation.

Claims (5)

1. cavity body filter that can improve power capacity, comprise cavity, cover plate, resonant rod and adjustment screw, resonant rod is arranged in the cavity, adjustment screw is passed cover plate, its lower end is arranged in the endoporus of resonant rod, cover plate is arranged on the cavity, it is characterized in that: described cover plate is provided with through hole, and cover plate is provided with lug boss, and through hole runs through the lug boss of cover plate, through-hole wall is provided with internal thread, described adjustment screw top is provided with external screw thread, and adjustment screw is threaded with cover plate, and described cavity bottom is provided with erecting bed, resonant rod is fixed by screws on the erecting bed of cavity, is provided with spacing between resonant rod and the cover plate.
2. the cavity body filter that improves power capacity according to claim 1, it is characterized in that: described adjustment screw bottom is polished rod, the circular arc of bottom surface for protruding.
3. the cavity body filter that improves power capacity according to claim 1 is characterized in that: the aperture of described resonant rod outer and endoporus is provided with 45 degree roundings.
4. the cavity body filter that improves power capacity according to claim 1, it is characterized in that: the end face of described erecting bed is provided with boss, and the bottom of resonant rod is provided with the counterbore that is complementary with boss, and resonant rod is socketed on the boss by counterbore.
5. the cavity body filter that improves power capacity according to claim 1, it is characterized in that: the spacing between described resonant rod and the cover plate is 0.3mm-1mm.
CN 201220466205 2012-09-14 2012-09-14 Cavity filter capable of improving power capacity Expired - Fee Related CN202871952U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220466205 CN202871952U (en) 2012-09-14 2012-09-14 Cavity filter capable of improving power capacity

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220466205 CN202871952U (en) 2012-09-14 2012-09-14 Cavity filter capable of improving power capacity

Publications (1)

Publication Number Publication Date
CN202871952U true CN202871952U (en) 2013-04-10

Family

ID=48038643

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220466205 Expired - Fee Related CN202871952U (en) 2012-09-14 2012-09-14 Cavity filter capable of improving power capacity

Country Status (1)

Country Link
CN (1) CN202871952U (en)

Similar Documents

Publication Publication Date Title
CN201655936U (en) Cover plate of cavity filter and cavity filter
CN203826208U (en) Motor capacitor plastic housing
CN201038287Y (en) Coaxial cavity filter
CN101807736B (en) Cavity filter, cavity filter cover plate and tuning screw self-locking device
CN101950832A (en) Filter
CN202564517U (en) Novel low frequency cavity filter
CN202871952U (en) Cavity filter capable of improving power capacity
CN204315701U (en) Cavity resonator structure and cavity body filter thereof
CN202888363U (en) Cavity filter capable of improving temperature drift
CN204156063U (en) The inductive coupled structure of a kind of dielectric filter
CN202917644U (en) Structure for connecting of filter and LNA
CN203219658U (en) PCB board fixing panel
CN204216192U (en) A kind of dielectric filter
CN201749917U (en) Cavity filter, cavity filter cover plate and tuning screw self-locking device
CN202050041U (en) Filter
CN204114516U (en) A kind of bar shaped extension plate for expanded hole distance
CN103311042A (en) Novel upper conducting rod structure and production method thereof
CN203553323U (en) A resonator
CN204375895U (en) Cavity body filter
CN204375896U (en) Cavity body filter
CN203466273U (en) Cavity filter
CN204680545U (en) A kind of Novel plateau noinductive capacitor
CN205069823U (en) High -efficient cavity filter of low frequency
CN202721253U (en) Novel cavity filter resonant rod
CN201286999Y (en) Novel filter

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130410

Termination date: 20130914