CN107394403B - RCU transmission mechanisms built in multifrequency electrical tilt antenna - Google Patents
RCU transmission mechanisms built in multifrequency electrical tilt antenna Download PDFInfo
- Publication number
- CN107394403B CN107394403B CN201710595373.1A CN201710595373A CN107394403B CN 107394403 B CN107394403 B CN 107394403B CN 201710595373 A CN201710595373 A CN 201710595373A CN 107394403 B CN107394403 B CN 107394403B
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- Prior art keywords
- output shaft
- bit selecting
- electrical tilt
- transmission mechanisms
- output
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
- H01Q3/30—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array
- H01Q3/32—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array by mechanical means
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- Gears, Cams (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The present invention relates to RCU transmission mechanisms built in a kind of multifrequency electrical tilt antenna, belong to the technical field of antenna of mobile communication base station.RCU transmission mechanisms built in the multifrequency electrical tilt antenna of the present invention, including first motor, the second motor, bit selecting disk, the first output shaft, at least two second output shafts and at least two third output shafts；Bit selecting disk includes circle disk body, internal gear and bit selecting portion；First output shaft is engaged with the second output shaft, and bit selecting portion is matched with the second output shaft, and the second output shaft with third output shaft is separable engages.RCU transmission mechanisms design simple, stable structure built in the multifrequency electrical tilt antenna of the present invention, and bit selecting transmission agency may be implemented；Quick with compact-sized, output between centers conversion, light weight, reliability are high, save the characteristics of number of motors, can significantly reduce cost and improve transmission performance.
Description
Technical field
The present invention relates to the technical fields of antenna of mobile communication base station, it is more particularly related to which a kind of multifrequency is electric
Adjust built-in antenna RCU transmission mechanisms.
Background technology
It in mobile communication technology, needs that the radiation angle of antenna is adjusted using antenna drive mechanism, to reach covering
Different communication zone effects.Antenna drive mechanism has significant impact to the cost, weight and size of antenna.Currently on the market
There are of high cost, occupied space is big and the shortcomings of assembly is difficult for the embedded transmission mechanism of multifrequency electrical tilt antenna.
Invention content
In order to solve above-mentioned technical problem of the existing technology, the purpose of the present invention is to provide a kind of multifrequency electricity tune days
RCU transmission mechanisms built in line.
In order to achieve the above-mentioned object of the invention, present invention employs following technical schemes：
RCU transmission mechanisms built in a kind of multifrequency electrical tilt antenna, it is characterised in that including：First motor, the second motor, bit selecting
Disk, the first output shaft, at least two second output shafts and at least two third output shafts；The bit selecting disk includes circle disk body, sets
It sets the internal gear on the inside of the circle disk body and the round backboard at the circle disk body back side is set, set on the circle backboard
It is equipped with bit selecting portion；Second output shaft is evenly distributed on the week of first output shaft centered on first output shaft
It encloses, second output shaft and third output shaft correspond, and the second end of second output shaft and the third are defeated
The first end of shaft passes through the separable engagement of spline；Second motor is nibbled by the internal gear of gear shaft and bit selecting disk
Merging can drive the first end cooperation of the bit selecting portion and the second output shaft to make second output shaft and the first output shaft
Gear engages and the second end of second output shaft is made to pass through spline engagement with the first end of corresponding third output shaft；It is described
First motor is engaged with the first output shaft by splined shaft and first output shaft is driven to drive the second output being engaged with
Shaft rotation is dynamic, and the second output shaft synchronous rotation that third output shaft engages, and the rotation of third output shaft output is real
The change of existing phase shifter phase.
Wherein, the third output shaft is thread spindle.
Wherein, the built-in RCU transmission mechanisms further include shell, the first positioning housing, the second positioning housing and bearing；Institute
Bit selecting disk is stated to be arranged between the shell and first positioning housing；First output shaft and the setting of the second output shaft exist
Between first positioning housing and the second positioning housing, between the gear of second output shaft and second positioning housing
Also it is arranged with resetting spring；The third output shaft is arranged between second positioning housing and the bearing；Wherein, described
First positioning housing is fixed by being parallel to axial linking arm with the shell respectively with the second positioning housing, first electricity
The splined shaft of machine is engaged across the shell with first positioning housing with first output shaft；The tooth of second motor
Wheel shaft is engaged across the shell with the internal gear of the bit selecting disk；The first end of second output shaft passes through described first to determine
The second end of the through-hole of position shell, second output shaft passes through the described second through-hole for positioning shell.
Wherein, first output shaft, the second output shaft and third output shaft are made of engineering plastics.
Wherein, the circle disk body of the bit selecting disk, internal gear and round backboard are integrally formed by engineering plastics.
Wherein, the engineering plastics are selected from melmac, polycarbonate resin, polyphenylene sulfide, epoxy resin
Or one kind in modified epoxy.
Wherein, the bit selecting portion is with the bulge-structure with the matched curved surface of the second output shaft, the protrusion
Structure hot adhesion is on the round backboard.
Wherein, the bit selecting portion is process by metal material, preferably magnesium alloy.
Wherein, the shear strength between the bit selecting portion and the round backboard is more than 8.0MPa, and peel strength is more than
2.0N/mm。
The second aspect of the present invention further includes a kind of multifrequency electrical tilt antenna comprising transmission mechanism and phase shifter, the biography
Motivation structure is selected from RCU transmission mechanisms built in above-mentioned multifrequency electrical tilt antenna；The phase shifter is defeated by bindiny mechanism and the third
Go out axis connection, and by rotating the corresponding phase for adjusting the phase shifter of output on the third output shaft.
Compared with the immediate prior art, RCU transmission mechanisms built in multifrequency electrical tilt antenna of the invention have with following
Beneficial effect：
RCU transmission mechanisms built in the multifrequency electrical tilt antenna of the present invention design simple, stable structure, and the structure of bit selecting disk
Simply, stabilization, durability are good, and can conveniently realize bit selecting transmission agency；It is fast with compact-sized, output between centers conversion
Speed, light weight, reliability are high, save the characteristics of number of motors, can significantly reduce cost and improve transmission performance.
Description of the drawings
Fig. 1 is the structural schematic diagram of RCU transmission mechanisms built in the multifrequency electrical tilt antenna of the present invention.
Fig. 2 is the disassemblying structure schematic diagram in RCU transmission mechanisms built in the multifrequency electrical tilt antenna of the present invention.
Fig. 3 is the positive structure schematic of the bit selecting disk in the built-in RCU transmission mechanisms of the present invention.
Fig. 4 is the structure schematic diagram of the bit selecting disk in the built-in RCU transmission mechanisms of the present invention.
Wherein, the meaning represented by each reference numeral is respectively：1- first motors, the second motors of 2-, 3- shells, 4- first
The spline of positioning housing, the second positioning housings of 5-, 6- bearings, 7- bit selectings disk, the gear shaft of the second motors of 8-, 9- first motors
Axis, the first output shafts of 10-, the second output shafts of 11-, 12- thirds output shaft, 13- resetting springs.
Specific implementation mode
RCU transmission mechanisms built in the multifrequency electrical tilt antenna of the present invention are further explained below with reference to specific embodiment
It states, to make more complete and clear explanation to technical scheme of the present invention.
As shown in Figs 1-4, RCU transmission mechanisms built in multifrequency electrical tilt antenna of the invention include：The 1, second electricity of first motor
Machine 2, bit selecting disk 7, the first output shaft 10, at least two second output shafts 11 and at least two third output shafts 12, shell 3,
One positioning housing 4, the second positioning housing 5 and bearing 6.Bit selecting disk 7 is arranged between shell 3 and the first positioning housing 4；First is defeated
Shaft 10 and the second output shaft 11 are arranged between the first positioning housing 4 and the second positioning housing 5, the gear of the second output shaft 11
It is arranged with resetting spring 13 between the second positioning housing 5.The setting of third output shaft 12 the second positioning housing 5 and bearing 6 it
Between.First positioning housing 4 and the second positioning housing 5 are fixed by being parallel to axial linking arm with shell 3 respectively.Bit selecting Pan Bao
It includes circle disk body, the internal gear being arranged on the inside of circle disk body and is arranged in the bit selecting portion at the circle disk body back side.Second output shaft 11 with
It is evenly distributed on centered on first output shaft 10 around first output shaft 10.Second output shaft 11 and third output
Axis 12 corresponds, and the second end of second output shaft 11 and the first end of the third output shaft 12 can by spline
The engagement of separation.The splined shaft 9 of first motor 1 is engaged across shell 3 with the first positioning housing 4 with the first output shaft 10.Second
The gear shaft 8 of motor 2 is engaged across shell 3 with the internal gear of bit selecting disk 7.The first end of second output shaft 11 passes through the first positioning
The through-hole of shell 4, the second end of the second output shaft 11 pass through the through-hole of the second positioning shell 5.Second motor 2 passes through gear
The internal gear of axis 8 and bit selecting disk 7 is engaged and can drive the first end of bit selecting portion and the second output shaft 11 to coordinate so that described
The gear of second output shaft 11 and the first output shaft 10 engages and makes the second end of second output shaft 11 and corresponding third
The first end of output shaft 12 passes through spline engagement.
In the present invention, first output shaft, the second output shaft and third output shaft are made of engineering plastics, and institute
Engineering plastics are stated in melmac, polycarbonate resin, polyphenylene sulfide, epoxy resin or modified epoxy
One kind.Specifically, above-mentioned output shaft can be by being molded or pour into a mould, or can also be by purchased in market.And the bit selecting
Circle disk body, internal gear and the round backboard of disk are integrally formed by engineering plastics.The bit selecting portion be with it is described second defeated
The bulge-structure of the matched curved surface of shaft, the bulge-structure hot adhesion is on the round backboard.The bit selecting portion is by light
Matter universal metal-magnesium alloy is process, and is conducive to play its light weight and the good advantage of wearability using magnesium alloy.It is existing
In order to ensure the hot sticky knotting strength between metal and plastics in technique, generally use vulcanizes affixed technique (and/or cooperation open gap
To increase contact area), but engineering plastics of the present invention be not suitable for vulcanization it is affixed (commonly used in rubber, nylon etc. with
Metal it is affixed), and open gap is easy to cause gap, to be easy cracking separation in use.In order to improve magnesium and close
Hot sticky knotting strength between golden and above-mentioned engineering plastics, the present invention is first to bulge-structure and the one of the engineering plastics hot adhesion
Face is surface-treated using inorganic agent, and is heated and melted to the region of round backboard hot adhesion, then will be after surface treatment
Bulge-structure is placed on the region of heating melting and applies the pressure of 0.1~0.5MPa to carry out hot adhesion.In the present invention, institute
Inorganic agent is stated by the imidazoles of 5~10g/L, the boron trioxide of the benzenethiol of 1~5g/L, the hexafluoride of 1~10g/L, 3~6g/L
And aqueous solvent composition；The pH value of the inorganic agent is 3~6, can use conventional inorganic acid such as phosphoric acid or organic acid, example
Such as common carboxylic acid such as acetic acid, oxalic acid adjust pH value to defined range.The imidazoles can for example select 1- benzyls-
2-methylimidazole, 1- 1-cyanoethyl-2-methylimidazoles or 1- cyanoethyls -2-ethyl-4-methylimidazole, and preferably containing cyanoalkyl
Imidazoles, such as 1- 1-cyanoethyl-2-methylimidazoles or 1- cyanoethyls -2-ethyl-4-methylimidazole.The diphenyl sulfide of selection for example can be with
Select 2- alkyl diphenyl sulfide, 2- alkoxy benzenes thiophenol, 2,5- dialkyl benzenes thiophenol, 2,5- dialkoxy benzenethiols etc..Described
Hexafluoride is selected from least one of hexafluorosilicate, fluotitanic acid and fluorine zirconic acid.The organic solvent is ethanol water,
And the content of wherein ethyl alcohol is 3.0~20.0wt%.The boron trioxide of addition in acid condition can be in magnesium with hexafluoride etc.
Alloy surface forms complicated complex system, is conducive to be bonded with the engineering plastics of melting and keeps permanent caking property.Heat
It is cohesive to be as follows：Oil removal treatment is carried out to bulge-structure first, such as can be removed by Solvent degreasing, alkalinity
Oily technique carries out oil removal treatment and with water rinsed clean, and bulge-structure is then immersed in 5~30 points of impregnation in inorganic agent
Clock (time for implementing impregnation in sample and comparative sample is 10 minutes) then takes out and is heating and curing that (temperature is for example
It is 120 DEG C) 10 minutes.The hot sticky tie region of the round backboard of bit selecting disk is subjected to heating melting later and (selective laser can be used
Heating), and bulge-structure is disposed thereon then 0.1~0.5MPa of application (implementation sample and comparative sample by treated
The middle pressure used is 0.15MPa) pressure carry out hot adhesion.Used by the following table 1 shows each sample and comparative sample
The composition and content of inorganic agent (solvent is the aqueous solution that ethanol content is 5wt%).
Table 1 (per component content, g/L and pH value contained in L inorganic agents)
Each reality is tested as the example of engineering plastics using round backboard made of polycarbonate resin and epoxy resin respectively
The heat adhesiveness for applying sample and comparative sample can be (each to implement sample or comparative sample is tested to be averaged for 5 times and measures its cutting at room temperature
Shearing stress and peel strength), as a result respectively as shown in table 2 (polycarbonate resin) and table 3 (epoxy resin).
Table 2
Table 3
Each reality will be tried as the example of engineering plastics using round backboard made of polycarbonate resin and epoxy resin respectively
It is 60 DEG C that sample and comparative sample, which are applied, in temperature, after placing 10d burin-in process in the insulating box that humidity is 50RH, then tests each reality
The heat adhesiveness for applying sample and comparative sample can be (each to implement sample or comparative sample is tested to be averaged for 5 times and measures its cutting at room temperature
Shearing stress and peel strength), as a result respectively as shown in table 4 (polycarbonate resin) and table 5 (epoxy resin).
Table 4
Table 5
For the multifrequency electrical tilt antenna of the present invention, engaged simultaneously with the first output shaft 10 by splined shaft 9 by first motor 1
First output shaft 10 is driven to drive the second output shaft 11 rotation being engaged with, and third output shaft 11 engages the
Two output shafts 12 rotate synchronously, and the change of corresponding phase shifter phase is realized in the rotation output of the third output shaft 12, from
And the angle of radiation of antenna can be changed.When needing the phase to other phase shifters to be adjusted, pass through first motor 1 and choosing
The synchronous rotary of position disk 7 and when rotating to the number of turns of setting, can make bit selecting portion is detached from the second output shaft before to match
It closes, the restoring force that resetting spring 13 provides at this time can make the second output shaft reset, to terminate the first output shaft above-mentioned
With the cooperation of the second output shaft, matched second output shaft of the phase shifter adjusted can be selected and need by rotating bit selecting disk again
It matches, then starts first motor and carry out phase adjusted, to change the angle of radiation of its antenna.
For the ordinary skill in the art, specific embodiment is only exemplarily described the present invention,
Obviously the present invention specific implementation is not subject to the restrictions described above, as long as use the inventive concept and technical scheme of the present invention into
The improvement of capable various unsubstantialities, or it is not improved by the present invention design and technical solution directly apply to other occasions
, within protection scope of the present invention.
Claims (9)
1. RCU transmission mechanisms built in a kind of multifrequency electrical tilt antenna, it is characterised in that including：First motor, the second motor, bit selecting
Disk, the first output shaft, at least two second output shafts and at least two third output shafts；The bit selecting disk includes circle disk body, sets
It sets the internal gear on the inside of the circle disk body and is arranged in the bit selecting portion at the circle disk body back side；Second output shaft is with institute
It states and is evenly distributed on around first output shaft centered on the first output shaft, second output shaft and third output shaft one
One corresponds to, and the second end of second output shaft and the first end of the third output shaft are nibbled by the way that spline is separable
It closes；Second motor is engaged by the internal gear of gear shaft and bit selecting disk and the bit selecting portion can be driven to be exported with second
The first end of axis coordinates so that second output shaft engages with the gear of the first output shaft and make the of second output shaft
Two ends pass through spline engagement with the first end of corresponding third output shaft；The first motor passes through splined shaft and the first output shaft
It engages and first output shaft is driven to drive the second output shaft rotation being engaged with, and third output shaft engages the
Two output shaft synchronous rotate, and the change of phase shifter phase is realized in the rotation output of the third output shaft；The built-in RCU is passed
Motivation structure further includes shell, the first positioning housing, the second positioning housing and bearing；The bit selecting disk is arranged in the shell and institute
It states between the first positioning housing；First output shaft and the setting of the second output shaft are positioned in first positioning housing and second
Between shell, resetting spring is also arranged between the gear of second output shaft and second positioning housing；The third
Output shaft is arranged between second positioning housing and the bearing；Wherein, first positioning housing and the second positioning shell
Body is fixed by being parallel to axial linking arm with the shell respectively, the splined shaft of the first motor pass through the shell with
First positioning housing is engaged with first output shaft；The gear shaft of second motor passes through the shell and the choosing
The internal gear engagement of position disk；The first end of second output shaft passes through the described first through-hole for positioning shell, and described second is defeated
The second end of shaft passes through the described second through-hole for positioning shell；And when needing the phase to phase shifter to be adjusted, lead to
When crossing the synchronous rotary of first motor and bit selecting disk and rotating to the number of turns of setting so that bit selecting portion is detached from the second output shaft
Cooperation, the restoring force that resetting spring provides make the second output shaft reset to terminate matching for the first output shaft and the second output shaft
It closes, rotates the selection of bit selecting disk again and matched with matched second output shaft of phase shifter adjusted is needed, then start first
Motor carries out phase adjusted, to change the angle of radiation of its antenna.
2. RCU transmission mechanisms built in multifrequency electrical tilt antenna according to claim 1, it is characterised in that：The third output
Axis is thread spindle.
3. RCU transmission mechanisms built in multifrequency electrical tilt antenna according to claim 1, it is characterised in that：First output
Axis, the second output shaft and third output shaft are made of engineering plastics.
4. RCU transmission mechanisms built in multifrequency electrical tilt antenna according to claim 1, it is characterised in that：The bit selecting disk
Circle disk body, internal gear and round backboard are integrally formed by engineering plastics.
5. RCU transmission mechanisms built in multifrequency electrical tilt antenna according to claim 4, it is characterised in that：The engineering plastics
One kind in melmac, polycarbonate resin, polyphenylene sulfide, epoxy resin or modified epoxy.
6. RCU transmission mechanisms built in multifrequency electrical tilt antenna according to claim 5, it is characterised in that：The bit selecting portion is
With the bulge-structure with the matched curved surface of the second output shaft, the bulge-structure hot adhesion is in the round backboard
On.
7. RCU transmission mechanisms built in multifrequency electrical tilt antenna according to claim 5, it is characterised in that：The bit selecting portion by
Magnesium alloy is process.
8. RCU transmission mechanisms built in multifrequency electrical tilt antenna according to claim 7, it is characterised in that：The bit selecting portion with
Shear strength between the circle backboard is more than 8.0MPa, and peel strength is more than 2.0N/mm.
9. a kind of multifrequency electrical tilt antenna, including transmission mechanism and phase shifter, it is characterised in that：The transmission mechanism is wanted selected from right
Seek RCU transmission mechanisms built in 1-8 any one of them multifrequency electrical tilt antennas；The phase shifter passes through bindiny mechanism and the third
Axis connection is exported, and by rotating the corresponding phase for adjusting the phase shifter of output on the third output shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710595373.1A CN107394403B (en) | 2017-07-20 | 2017-07-20 | RCU transmission mechanisms built in multifrequency electrical tilt antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710595373.1A CN107394403B (en) | 2017-07-20 | 2017-07-20 | RCU transmission mechanisms built in multifrequency electrical tilt antenna |
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| Publication Number | Publication Date |
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| CN107394403A CN107394403A (en) | 2017-11-24 |
| CN107394403B true CN107394403B (en) | 2018-08-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710595373.1A Active CN107394403B (en) | 2017-07-20 | 2017-07-20 | RCU transmission mechanisms built in multifrequency electrical tilt antenna |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108506450B (en) * | 2017-12-06 | 2024-03-01 | 深圳市兆威机电股份有限公司 | Multi-frequency antenna transmission device |
| CN108506449B (en) * | 2017-12-06 | 2019-11-26 | 深圳市兆威机电股份有限公司 | Multifrequency antenna transmission device |
| CN108134200B (en) * | 2017-12-22 | 2022-01-18 | 东莞市本量电子科技有限公司 | Built-in dual-motor six-gear-shifting electrically-tunable antenna driver |
| CN108493614B (en) * | 2018-05-11 | 2023-11-10 | 京信通信技术(广州)有限公司 | Multi-path transmission device and electric tuning antenna transmission device |
| CN109216925B (en) * | 2018-10-11 | 2023-08-04 | 广东盛路通信科技股份有限公司 | Transmission device for electric downtilt angle adjustment of antenna |
| CN109244672A (en) * | 2018-11-06 | 2019-01-18 | 深圳市鑫龙通信技术有限公司 | A kind of antenna gearshift |
| CN109611515A (en) * | 2018-12-28 | 2019-04-12 | 广东司南通信科技有限公司 | RCU transmission mechanism and application built in multifrequency electrical tilt antenna |
| CN109659697B (en) * | 2018-12-28 | 2023-09-08 | 广州司南技术有限公司 | Built-in RCU transmission mechanism of multi-frequency electrically-tunable antenna and application thereof |
| CN110600883B (en) * | 2019-09-17 | 2021-03-12 | 武汉虹信通信技术有限责任公司 | Phase shifter driving device and electrically tunable antenna |
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| CN107394403A (en) | 2017-11-24 |
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