CN109301483A - A kind of more star single-band antennas based on multi-arm spiral - Google Patents
A kind of more star single-band antennas based on multi-arm spiral Download PDFInfo
- Publication number
- CN109301483A CN109301483A CN201811171393.7A CN201811171393A CN109301483A CN 109301483 A CN109301483 A CN 109301483A CN 201811171393 A CN201811171393 A CN 201811171393A CN 109301483 A CN109301483 A CN 109301483A
- Authority
- CN
- China
- Prior art keywords
- protecting crust
- oscillating rod
- hinged
- band antennas
- antennas based
- 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.)
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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
- H01Q3/02—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole
- H01Q3/04—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole for varying one co-ordinate of the orientation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/20—Resilient mountings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/42—Housings not intimately mechanically associated with radiating elements, e.g. radome
- H01Q1/428—Collapsible radomes; rotatable, tiltable radomes
Abstract
The present invention relates to antenna technical fields, especially a kind of more star single-band antennas based on multi-arm spiral, including mounting rack, the upper center of the mounting rack is hinged with protecting crust by flexural pivot, the inner cavity lower slide of the protecting crust is connected with mounting plate, the upper end of the mounting plate is equipped with antenna body, fixing axle is fixedly connected between the lower part of protecting crust inner wall two sides, the first spring is equipped between two axle sleeves, and first spring is socketed on the outside of fixing axle, the upper end of the axle sleeve is hinged with the first oscillating rod by pin shaft, the lower end of the axle sleeve is hinged with the second oscillating rod by pin shaft, and second spring is fixedly connected between first oscillating rod and the second oscillating rod.The configuration of the present invention is simple, it is easy to use, the angle of antenna body can not only be adjusted at any time, and can be effectively protected that antenna body is against damages, substantially prolong the service life of device, be worthy to be popularized.
Description
Technical field
The present invention relates to antenna technical field more particularly to a kind of more star single-band antennas based on multi-arm spiral.
Background technique
Antenna is the essential elements in satellite navigation system terminal, satellite navigation system terminal by Multi-arm spiral antenna come
The electromagnetic wave signal for receiving navigation satellite transmitting, the radio-frequency front-end processing being supplied in terminal, is believed with this to obtain navigation satellite
Number and relevant data information, therefore, the superiority and inferiority of Multi-arm spiral antenna performance will will have a direct impact on satellite navigation system terminal
Normal operating conditions.
Existing Multi-arm spiral antenna after installation, can not adjust the angle of antenna according to the needs of use, lead to antenna
Signal ability to accept it is poor, optimal signal can not be provided the user with and receive position, in addition, existing Multi-arm spiral antenna also lack
Weary corresponding safeguard measure, antenna are easy to reduce the service life because colliding, shaking and be damaged.For this purpose, we mention
A kind of novel more star single-band antennas based on multi-arm spiral solve problems out.
Summary of the invention
The purpose of the present invention is to solve disadvantage existing in the prior art, and propose a kind of based on multi-arm spiral
More star single-band antennas.
To achieve the goals above, present invention employs following technical solutions:
A kind of more star single-band antennas based on multi-arm spiral are designed, including mounting rack, the upper center of the mounting rack pass through ball
It is hinged with protecting crust, two upper lateral part of inner wall of the mounting rack is extended through equipped with screwed pipe, the inside spiral shell of the screwed pipe
Line is connected with threaded rod, and one end of the threaded rod is fixedly connected with the fixed plate being used cooperatively with protecting crust, and the threaded rod is remote
Side from fixed plate is connected with rocking bar, and the inner cavity lower slide of the protecting crust is connected with mounting plate, the mounting plate it is upper
End is equipped with antenna body, is fixedly connected with fixing axle between the lower part of protecting crust inner wall two sides, the fixing axle it is outer
Side is socketed with axle sleeve, is equipped with the first spring between two axle sleeves, and first spring is socketed on the outside of fixing axle, institute
The upper end for stating axle sleeve is hinged with the first oscillating rod by pin shaft, and the upper end of first oscillating rod is cut with scissors by pin shaft and mounting plate
It connects, the lower end of the axle sleeve is hinged with the second oscillating rod by pin shaft, and the lower end of second oscillating rod passes through pin shaft and protection
The inner wall bottom end of shell is hinged, and is fixedly connected with second spring between first oscillating rod and the second oscillating rod.
Preferably, the lower end two sides of the mounting rack are symmetrically arranged with support device, and the support device includes loop bar, institute
The upper end for stating support device is plugged with support rod, and the upper end of the support rod is connected with mounting rack, the lower end of the support rod
Spring ring is equipped between the intracavity bottom of loop bar.
Preferably, drainage hole is uniformly provided in the middle part of the lower end of the mounting rack.
Preferably, the two sides of the mounting plate are connected separately with sliding block, and the inner wall two sides of the protecting crust offer with
The sliding slot that sliding block matches.
Preferably, the outer wall side of the protecting crust offers cable-through hole, and the cable-through hole is used cooperatively with antenna body.
Preferably, the threaded upper ends of the protecting crust are connected with cover board, and the upper end of the cover board is connected with turntable.
Preferably, the upper end of the mounting plate offers the groove to match with antenna body, and the inside of the groove
Equipped with rubber pad.
A kind of more star single-band antennas based on multi-arm spiral proposed by the present invention, beneficial effect are: by rotating screw thread
Bar moves outward, and fixed plate can be made far from protecting crust, the fixation to protecting crust is released, then make protecting crust around ball
Hinge rotation, the angle of adjustable antenna body receive position for finding optimal signal, ensure that the received stabilization of signal
Property, it when encountering shock vibration, is moved up and down by mounting plate, the first oscillating rod and the second oscillating rod is driven to swing, so that axle sleeve
It is mobile, so that deformation occurs for the first spring and second spring, the elastic force generated using the first spring and second spring deformation
Good shock absorbing effect can be played, antenna body is avoided to be shaken and damage.Compare existing technology, knot of the present invention
Structure is simple, easy to use, can not only adjust the angle of antenna body at any time, and can be effectively protected antenna body from
Damage, substantially prolongs the service life of device, is worthy to be popularized.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of more star single-band antennas based on multi-arm spiral proposed by the present invention；
Fig. 2 is the structural schematic diagram of support device in a kind of more star single-band antennas based on multi-arm spiral proposed by the present invention.
In figure: protecting crust 1, mounting plate 2, antenna body 3, fixing axle 4, axle sleeve 5, the first spring 6, the first oscillating rod 7,
Two oscillating rods 8, second spring 9, shaft 10, mounting rack 11, screwed pipe 12, threaded rod 13, fixed plate 14, rocking bar 15, cable-through hole
16, groove 17, rubber pad 18, sliding block 19, sliding slot 20, cover board 21, turntable 22, drainage hole 23, support device 24, loop bar 25, branch
Strut 26, spring ring 27, flexural pivot 28.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.
Referring to Fig.1-2, a kind of more star single-band antennas based on multi-arm spiral, including mounting rack 11, the lower end of mounting rack 11
Two sides are symmetrically arranged with support device 24, and support device 24 includes loop bar 25, and the upper end of support device 24 is plugged with support rod 26,
The upper end of support rod 26 is connected with mounting rack 11, and spring ring is equipped between the lower end of support rod 26 and the intracavity bottom of loop bar 25
27, mounting rack 11 can be jacked up by support device 24, it, can be to avoid mounting rack 11 because of damp ground environment far from ground
And corrode, while using the elastic force of spring ring 27, can be further improved the buffer protection function to antenna body 3.
It is uniformly provided with drainage hole 23 in the middle part of the lower end of mounting rack 11, in outdoor application, drainage hole 23 can be used device
In discharge rainwater, rainwater accumulation corrosion mounting rack 11 is avoided.
The upper center of mounting rack 11 is hinged with protecting crust 1 by flexural pivot 28, and the outer wall side of protecting crust 1 offered line
Hole 16, cable-through hole 16 are used cooperatively with antenna body 3, when installing antenna body 3, can be convenient the progress of installation work, more
Add convenient to use.
The threaded upper ends of protecting crust 1 are connected with cover board 21, and the upper end of cover board 21 is connected with turntable 22, and cover board 21 can will be prevented
Protective case 1 seals, and improves the protective effect to antenna body 3, and the setting of turntable 22 then improves convenient when protecting crust 1 rotates
Property, more convenient angle for adjusting antenna body 3.
Two upper lateral part of inner wall of mounting rack 11 is extended through equipped with screwed pipe 12, and the internal whorl of screwed pipe 12 is connected with spiral shell
Rasp bar 13, one end of threaded rod 13 are fixedly connected with the fixed plate 14 being used cooperatively with protecting crust 1, and threaded rod 13 is far from fixed plate 14
Side be connected with rocking bar 15, the inner cavity lower slide of protecting crust 1 is connected with mounting plate 2, and the two sides of mounting plate 2 are connected separately with
Sliding block 19, and the inner wall two sides of protecting crust 1 offer the sliding slot 20 to match with sliding block 19, can reduce mounting plate 2 and protection
Frictional force between 1 inner wall of shell is conducive to moving up and down for mounting plate 2, while can play limit to moving up and down for mounting plate 2
Production is used, more reliable and more stable.
The upper end of mounting plate 2 is equipped with antenna body 3, the upper end of mounting plate 2 offer match with antenna body 3 it is recessed
Slot 17, and the inside of groove 17 is equipped with rubber pad 18, groove 17 is provided with conducive to the installation of antenna body 3, and enhances day
Stability after the installation of line ontology 3, avoids the occurrence of shaking, and the elasticity of rubber pad 18 can then reinforce the buffering to antenna body 3
Protective effect.
It is fixedly connected with fixing axle 4 between the lower part of 1 inner wall two sides of protecting crust, the outside of fixing axle 4 is socketed with axle sleeve 5,
The first spring 6 is equipped between two axle sleeves 5, and the first spring 6 is socketed on the outside of fixing axle 4, the upper end of axle sleeve 5 passes through pin shaft
It is hinged with the first oscillating rod 7, the upper end of the first oscillating rod 7 is hinged by pin shaft and mounting plate 2, and the lower end of axle sleeve 5 passes through pin shaft
It is hinged with the second oscillating rod 8, the lower end of the second oscillating rod 8 is hinged by the inner wall bottom end of pin shaft and protecting crust 1, and first swings
Second spring 9 is fixedly connected between bar 7 and the second oscillating rod 8.
In use, moving outward by rotating threaded rod 13, fixed plate 14 can be made far from protecting crust 1, releasing pair
The fixation of protecting crust 1 rotates protecting crust 1 around flexural pivot 28, the angle of adjustable antenna body 3, for finding
Optimal signal receives position, ensure that the received stability of signal, when encountering shock vibration, by moving down on mounting plate 2
It is dynamic, drive the first oscillating rod 7 and the second oscillating rod 8 to swing, so that axle sleeve 5 is mobile, so that the first spring 6 and second spring
9 deformation occurs, can play good shock absorbing effect using the elastic force that the first spring 6 and 9 deformation of second spring generate, keep away
Exempt from antenna body 3 to be shaken and damage.
The foregoing description of the embodiment of the present invention provides for the purpose of illustration and explanation.They are not exhaustion
Property, it is also not meant to limit the invention to these contents accurately described, it, can also be there are many changing under the guide of above-mentioned introduction
Dynamic and variation.These embodiments are selected and describe merely to best illustration the principle of the present invention and their reality are answered
With so that those skilled in the art can preferably in various embodiments and use is suitable for expected specific use
Various changes apply the present invention.It is understood, therefore, that this invention is intended to be covered within the scope of following claim
It is all to change and be equal.
Claims (7)
1. a kind of more star single-band antennas based on multi-arm spiral, including mounting rack, which is characterized in that in the upper end of the mounting rack
Portion is hinged with protecting crust by flexural pivot, and two upper lateral part of inner wall of the mounting rack is extended through equipped with screwed pipe, the screwed pipe
Internal whorl be connected with threaded rod, one end of the threaded rod is fixedly connected with the fixed plate being used cooperatively with protecting crust, described
Threaded rod is connected with rocking bar far from the side of fixed plate, and the inner cavity lower slide of the protecting crust is connected with mounting plate, the peace
The upper end of loading board is equipped with antenna body, and fixing axle is fixedly connected between the lower part of protecting crust inner wall two sides, described solid
It is socketed with axle sleeve on the outside of dead axle, is equipped with the first spring between two axle sleeves, and first spring is socketed on fixing axle
Outside, the upper end of the axle sleeve is hinged with the first oscillating rod by pin shaft, the upper end of first oscillating rod by pin shaft with
Mounting plate is hinged, and the lower end of the axle sleeve is hinged with the second oscillating rod by pin shaft, and the lower end of second oscillating rod passes through pin
The inner wall bottom end of axis and protecting crust is hinged, and is fixedly connected with second spring between first oscillating rod and the second oscillating rod.
2. a kind of more star single-band antennas based on multi-arm spiral according to claim 1, which is characterized in that the mounting rack
Lower end two sides be symmetrically arranged with support device, the support device includes loop bar, and the upper end of the support device is plugged with branch
The upper end of strut, the support rod is connected with mounting rack, is equipped between the lower end of the support rod and the intracavity bottom of loop bar
Spring ring.
3. a kind of more star single-band antennas based on multi-arm spiral according to claim 1, which is characterized in that the mounting rack
Lower end in the middle part of be uniformly provided with drainage hole.
4. a kind of more star single-band antennas based on multi-arm spiral according to claim 1, which is characterized in that the mounting plate
Two sides be connected separately with sliding block, and the inner wall two sides of the protecting crust offer the sliding slot to match with sliding block.
5. a kind of more star single-band antennas based on multi-arm spiral according to claim 1, which is characterized in that the protecting crust
Outer wall side offer cable-through hole, the cable-through hole is used cooperatively with antenna body.
6. a kind of more star single-band antennas based on multi-arm spiral according to claim 1, which is characterized in that the protecting crust
Threaded upper ends be connected with cover board, the upper end of the cover board is connected with turntable.
7. a kind of more star single-band antennas based on multi-arm spiral according to claim 1, which is characterized in that the mounting plate
Upper end offer the groove to match with antenna body, and the inside of the groove is equipped with rubber pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811171393.7A CN109301483B (en) | 2018-10-10 | 2018-10-10 | Multi-star single-frequency antenna based on multi-arm spiral |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811171393.7A CN109301483B (en) | 2018-10-10 | 2018-10-10 | Multi-star single-frequency antenna based on multi-arm spiral |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109301483A true CN109301483A (en) | 2019-02-01 |
| CN109301483B CN109301483B (en) | 2021-05-11 |
Family
ID=65162017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811171393.7A Active CN109301483B (en) | 2018-10-10 | 2018-10-10 | Multi-star single-frequency antenna based on multi-arm spiral |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109301483B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110808469A (en) * | 2019-11-12 | 2020-02-18 | 吴夕强 | Angle-adjustable 5G Internet of things communication antenna |
| CN111641017A (en) * | 2020-05-28 | 2020-09-08 | 深圳市晓控通信科技有限公司 | High antenna of security |
| CN112543031A (en) * | 2020-12-09 | 2021-03-23 | 南京途琼电子科技有限公司 | Signal receiving device with anti-interference mechanism |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09148818A (en) * | 1995-11-24 | 1997-06-06 | Matsushita Electric Works Ltd | Driving device of tracking antenna |
| WO2005122329A1 (en) * | 2004-06-09 | 2005-12-22 | Wiworld Co., Ltd. | Elevation angle control apparatus for satellite-tracking antenna |
| WO2010062915A1 (en) * | 2008-11-26 | 2010-06-03 | Echostar Technologies L.L.C. | Adjustment mechanism for dish antenna system |
| EP2262056A1 (en) * | 2009-06-10 | 2010-12-15 | Constructions Mecaniques de Normandie | Transducer assembly and vehicle comprising such assembly. |
| KR101013735B1 (en) * | 2009-05-27 | 2011-02-14 | 한국철도기술연구원 | The Device of CAB Signaling Correction Antenna for Tilting Train using coupler |
| CN205376296U (en) * | 2016-02-02 | 2016-07-06 | 铜陵市兆林工贸有限责任公司 | Take precautions against earthquakes and swing sub - fixing device of the capacitor |
| CN205452515U (en) * | 2016-01-04 | 2016-08-10 | 深圳市顶一精密五金有限公司 | Rotary device of outdoor short wave antenna |
| CN205790329U (en) * | 2016-07-01 | 2016-12-07 | 成都紫瑞青云航空宇航技术有限公司 | A kind of antenna holder |
| CN206282967U (en) * | 2016-08-30 | 2017-06-27 | 江苏文瑞智能科技有限公司 | A kind of adjustable outdoor signal reception antenna |
| CN206340665U (en) * | 2017-01-05 | 2017-07-18 | 江苏三和欣创通信科技有限公司 | A kind of dual-mode antenna device |
| CN107239107A (en) * | 2017-07-11 | 2017-10-10 | 合肥雷呈信息技术有限公司 | A kind of display base with defencive function |
| CN206961997U (en) * | 2017-08-02 | 2018-02-02 | 浙江固特气动科技股份有限公司 | Oscillator mounting structure on exterior aerial |
| CN207398330U (en) * | 2017-11-22 | 2018-05-22 | 航天中星（北京）科技有限公司 | The satellite antenna device being installed on mobile vehicle |
| CN207938788U (en) * | 2017-12-20 | 2018-10-02 | 西安龙之梦网络信息有限公司 | A kind of communication antenna protective device |
-
2018
- 2018-10-10 CN CN201811171393.7A patent/CN109301483B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09148818A (en) * | 1995-11-24 | 1997-06-06 | Matsushita Electric Works Ltd | Driving device of tracking antenna |
| WO2005122329A1 (en) * | 2004-06-09 | 2005-12-22 | Wiworld Co., Ltd. | Elevation angle control apparatus for satellite-tracking antenna |
| WO2010062915A1 (en) * | 2008-11-26 | 2010-06-03 | Echostar Technologies L.L.C. | Adjustment mechanism for dish antenna system |
| KR101013735B1 (en) * | 2009-05-27 | 2011-02-14 | 한국철도기술연구원 | The Device of CAB Signaling Correction Antenna for Tilting Train using coupler |
| EP2262056A1 (en) * | 2009-06-10 | 2010-12-15 | Constructions Mecaniques de Normandie | Transducer assembly and vehicle comprising such assembly. |
| CN205452515U (en) * | 2016-01-04 | 2016-08-10 | 深圳市顶一精密五金有限公司 | Rotary device of outdoor short wave antenna |
| CN205376296U (en) * | 2016-02-02 | 2016-07-06 | 铜陵市兆林工贸有限责任公司 | Take precautions against earthquakes and swing sub - fixing device of the capacitor |
| CN205790329U (en) * | 2016-07-01 | 2016-12-07 | 成都紫瑞青云航空宇航技术有限公司 | A kind of antenna holder |
| CN206282967U (en) * | 2016-08-30 | 2017-06-27 | 江苏文瑞智能科技有限公司 | A kind of adjustable outdoor signal reception antenna |
| CN206340665U (en) * | 2017-01-05 | 2017-07-18 | 江苏三和欣创通信科技有限公司 | A kind of dual-mode antenna device |
| CN107239107A (en) * | 2017-07-11 | 2017-10-10 | 合肥雷呈信息技术有限公司 | A kind of display base with defencive function |
| CN206961997U (en) * | 2017-08-02 | 2018-02-02 | 浙江固特气动科技股份有限公司 | Oscillator mounting structure on exterior aerial |
| CN207398330U (en) * | 2017-11-22 | 2018-05-22 | 航天中星（北京）科技有限公司 | The satellite antenna device being installed on mobile vehicle |
| CN207938788U (en) * | 2017-12-20 | 2018-10-02 | 西安龙之梦网络信息有限公司 | A kind of communication antenna protective device |
Non-Patent Citations (1)
| Title |
|---|
| 田洪伟: ""天线转台限位保护装置的设计与实现"", 《自动化技术与应用》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110808469A (en) * | 2019-11-12 | 2020-02-18 | 吴夕强 | Angle-adjustable 5G Internet of things communication antenna |
| CN111641017A (en) * | 2020-05-28 | 2020-09-08 | 深圳市晓控通信科技有限公司 | High antenna of security |
| CN112543031A (en) * | 2020-12-09 | 2021-03-23 | 南京途琼电子科技有限公司 | Signal receiving device with anti-interference mechanism |
| CN112543031B (en) * | 2020-12-09 | 2021-11-26 | 南京途琼电子科技有限公司 | Signal receiving device with anti-interference mechanism |
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| Publication number | Publication date |
|---|---|
| CN109301483B (en) | 2021-05-11 |
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