CN109728402A - Antenna assembly - Google Patents
Antenna assembly Download PDFInfo
- Publication number
- CN109728402A CN109728402A CN201811558642.8A CN201811558642A CN109728402A CN 109728402 A CN109728402 A CN 109728402A CN 201811558642 A CN201811558642 A CN 201811558642A CN 109728402 A CN109728402 A CN 109728402A
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- CN
- China
- Prior art keywords
- antenna
- coil
- antenna assembly
- loop aerial
- semicanal
- 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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- Support Of Aerials (AREA)
- Details Of Aerials (AREA)
Abstract
The invention discloses a kind of antenna assemblies, belong to field of antenna.The antenna assembly includes loop aerial and antenna box, loop aerial includes ring support, coil and ring sleeve, coil is wound on a toroidal support, antenna box includes bottom plate positioned opposite, top plate and the multiple side plates for connecting top plate and bottom plate, opposite two side plate of antenna box is equipped with through-hole, and antenna box is set on loop aerial by through-hole, and the end of a thread of coil is located in antenna box, control panel is equipped in antenna box, the end of a thread of coil is connect with control panel.By the way that through-hole is arranged on opposite two side plate in antenna box, antenna box can be set on loop aerial by through-hole, by being arranged the end of a thread of coil in antenna box, coil can be connect with the control panel being arranged in antenna box, to carry out the transmitting-receiving of signal.This antenna device arrangement is simple, and when carrying, staff can directly cover ring support on shoulder, easy to carry, occupies little space.
Description
Technical field
The present invention relates to field of antenna, in particular to a kind of antenna assembly.
Background technique
Antenna assembly is the important component of communication system, for sending and receiving for signal.
For the staff in mine underground work, it usually needs carry some antenna assemblies, these antenna device can be with
When contingency occurs, trapped person is facilitated to link up with the external world.
Since underground work personnel usually require to carry some tools, and the existing usual volume of some antenna assemblies compared with
Greatly, structure is complicated, not readily portable, and underworkings is with a varied topography, is also not easy to passing through for these antenna device.
Summary of the invention
The embodiment of the invention provides a kind of antenna assemblies, can carry convenient for underground work personnel.The technical solution
It is as follows:
The embodiment of the invention provides a kind of antenna assembly, including loop aerial and antenna box, the loop aerial includes
Ring support, coil and ring sleeve, the ring sleeve are set in outside the ring support, and the coil is located at the annular
In casing, the coil is wrapped on the ring support, and the antenna box includes bottom plate positioned opposite, top plate and connection institute
Multiple side plates of top plate and the bottom plate are stated, opposite two side plate of the antenna box is equipped with through-hole, and the antenna box is logical
It crosses the through-hole to be set on the loop aerial, the end of a thread of the coil is located in the antenna box, sets in the antenna box
There is control panel, the end of a thread of the coil is connect with the control panel.
Optionally, the ring sleeve includes the first semicanal and the second semicanal positioned opposite, first semicanal and institute
It is annular in shape to state the second semicanal, first semicanal and second semicanal are detachably connected.
Optionally, the outer wall of the ring sleeve have at least two annular grooves, at least two annular groove with it is described
Two side plate clampings.
Optionally, the number of turns of the coil is 40~60 circles.
Optionally, described two side plates include the fixed part connecting with the bottom plate and removable with the fixed part
Unloading the movable part of connection, the edge of the edge of the movable part and the fixed part is provided with semicircular indentations, when
When the movable part is connect with the fixed part, the semicircle of the semicircular indentations of the movable part and the fixed part
V notch v forms the through-hole.
Optionally, the fixed part includes the fixed plate and two guide plates of co-planar arrangement, described two guide plates with
The same side of the fixed plate connects, and described two guide plates are spaced apart from each other distribution, described two guide plates and the fixation
Plate surrounds the installation card slot for accommodating the movable part, and the movable part has two guide chutes being parallel to each other, described
Two guide plates are located in two guide chutes.
Optionally, it is provided with the first fixation hole on described two guide plates, is arranged on the side wall of two guide chutes
There are the second fixation hole, the movable part and the fixed part to fix by being plugged on second fixation hole and described first
Bolt in hole connects.
Optionally, the top plate is equipped with connector, and the control panel is connect with the connector.
Optionally, the diameter of the loop aerial is 700mm~900mm.
Optionally, the frequency of the loop aerial is no more than 28KHz.
Technical solution bring beneficial effect provided in an embodiment of the present invention includes at least: passing through setting loop aerial and day
Wire box, wherein loop aerial includes ring support, coil and ring sleeve, and the coil for receiving and transmitting signal can be directly wound in
On ring support, ring sleeve can be set in outside ring support, and ring support can support coil, and ring sleeve can be to line
Circle and ring support provide protection.By the way that through-hole is arranged on opposite two side plate in antenna box, antenna box can be passed through
Through-hole is set on loop aerial, and by being arranged the end of a thread of coil in antenna box, coil can be with setting in antenna box
Control panel connection, to carry out the transmitting-receiving of signal.This antenna device arrangement is simple, and when carrying, staff can be direct
Ring support is covered on shoulder, it is easy to carry, it occupies little space.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is a kind of structural schematic diagram of antenna assembly provided in an embodiment of the present invention；
Fig. 2 is a kind of structural schematic diagram of loop aerial provided in an embodiment of the present invention；
Fig. 3 is a kind of structural schematic diagram of first semicanal provided in an embodiment of the present invention；
Fig. 4 is the fixed part structural schematic diagram of side plate provided in an embodiment of the present invention；
Fig. 5 is movable part structural schematic diagram provided in an embodiment of the present invention；
Fig. 6 is a kind of structural schematic diagram of clump weight provided in an embodiment of the present invention.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is described in further detail.
Fig. 1 is a kind of structural schematic diagram of antenna assembly provided in an embodiment of the present invention.As shown in Figure 1, the antenna assembly
Including loop aerial 10 and antenna box 20.
Fig. 2 is a kind of structural schematic diagram of loop aerial provided in an embodiment of the present invention.As shown in Fig. 2, loop aerial 10
Including ring support 11, coil 12 and ring sleeve 13.Ring sleeve 13 is set in outside ring support 11, and coil 12 is located at annular
In casing 13, coil 12 is wrapped on ring support 11.Antenna box 20 includes bottom plate 21 positioned opposite, top plate 22 and connection top
Opposite two side plate 23 of multiple side plates 23 of plate 22 and bottom plate 21, antenna box 20 is equipped with through-hole 23a, and antenna box 20 passes through
Through-hole 23a is set on loop aerial 10.The end of a thread 121 of coil 12 is located in antenna box 20, and control panel is equipped in antenna box 20
24, the end of a thread 121 of coil 12 is connect with control panel 24.
By setting loop aerial and antenna box, wherein loop aerial includes ring support, coil and ring sleeve, is used for
The coil of receiving and transmitting signal can be directly wound on ring support, and ring sleeve can be set in outside ring support, ring support
Coil can be supported, ring sleeve can provide protection to coil and ring support.Pass through opposite two side in antenna box
Through-hole is set on plate, antenna box can be set on loop aerial by through-hole, by being arranged the end of a thread of coil in antenna
In box, coil can be connect with the control panel being arranged in antenna box, to carry out the transmitting-receiving of signal.This antenna device arrangement letter
Single, when carrying, staff can directly cover ring support on shoulder, easy to carry, occupy little space.
Coil 12 can be enameled wire, can be avoided 12 short circuit of coil.
Optionally, the number of turns of coil 12 can be 40~60 circles, such as coil 12 can have 50 circles.
Ring support 11 can be adopted and is made from an insulative material, and illustratively, ring support 11 can use epoxy resin material
Material production.Epoxide resin material not only has preferable insulating properties, and intensity also with higher can be born entire when carrying
The weight of antenna assembly.
Optionally, the diameter of loop aerial 10 can be 700mm~900mm.Staff can be facilitated antenna assembly
Back piggyback, can also be portable, and the size is relatively small, is not take up biggish space.Illustratively, loop aerial 10
Diameter can be 800mm.Here the diameter of loop aerial 10 can loop aerial 10 outer diameter.
Optionally, the frequency of loop aerial 10 can be no more than 28KHz.The frequency range belongs to low-frequency electromagnetic wave, in coal
There is preferable penetration performance in rock stratum, thicker coal rock layer can be penetrated, the environment under mine can be well adapted to.Pass through survey
Examination, sets 50 circles for the number of turns of coil 12, sets 800mm for the diameter of loop aerial 10, should using the frequency of 28KHz
The electromagnetic wave that antenna assembly generates can penetrate the coal rock layer of 50m thickness, and it is preferable to penetrate effect, and confined space and the external world may be implemented
The communication of rescue personnel or headquarter personnel.
Ring sleeve 13 can be adopted and is made from an insulative material, and short circuit occurs to avoid ring sleeve 13 and coil 12.
As shown in Figure 1, ring sleeve 13 may include the first semicanal 131 and the second semicanal 132 positioned opposite.The first half
Pipe 131 and the second semicanal 132 are annular in shape, and the first semicanal 131 and the second semicanal 132 are detachably connected.By ring sleeve 13
It is arranged to dismountable first semicanal 131 and the second semicanal 132, can be convenient and be attached to ring support 11 for 13 sets of ring sleeve
On.
Fig. 3 is a kind of structural schematic diagram of first semicanal provided in an embodiment of the present invention.The structure of second semicanal 132 can be with
It is identical as the structure of the first semicanal 131.As shown in figure 3, there are two annular groove 13a, two annulars for the outer wall tool of ring sleeve 13
Slot 13a and two side plates 23 are clamped.By the way that annular groove 13a is arranged, when loop aerial 10 is installed on antenna box 20, annular
Slot 13a can loosen to avoid loop aerial 10 and antenna box 20.
As shown in figure 3, having a notch 13b on the first semicanal 131, notch 13b is used for drawing for the end of a thread 121 of coil 12
Out.
In Fig. 3, the axis m of the first semicanal 131 is located between the center of circle A and notch 13b of the first semicanal 131.At other
In embodiment, notch 13b can also be located between the center of circle A of the first semicanal 131 and the axis m of the first semicanal 131.Here,
The axis m of one semicanal 131 is the line in the center of circle of all cross sections of the first semicanal 131.
Optionally, ring sleeve 13 can be bellows, and bellows facilitates bending, and bellows surface has more ring
Shape slot 13a can be clamped with side plate 23.
Referring to Fig.1, connector 25 can be equipped on top plate 22, control panel 24 is connect with connector 25.Control panel 24 and company
Connecing can connect power supply line and control signal wire between device 25, can be convenient by connector 25 and sets antenna assembly and communication
Standby connection.After connecting communication apparatus with connector 25, communication apparatus can be placed directly on top plate 22, be made convenient for user
With.
Top plate 22 can be bolted with side plate 23, with top plate 22 easy to disassemble, to control panel 24 carry out installation and
Maintenance.
Control panel 24 can be bolted on the inside of top plate 22, to protect control panel 24 by antenna box 20.This
When, the notch 13b of the first semicanal 131 can be arranged in the first semicanal 131 center of circle A and the first semicanal 131 axis m it
Between, the end of a thread 121 that can be convenient coil 12 in this way is connect with control panel 24.
Fig. 4 is the fixed part structural schematic diagram of side plate provided in an embodiment of the present invention, and Fig. 5 is that the embodiment of the present invention provides
Movable part structural schematic diagram.In conjunction with Fig. 4 and Fig. 5, two side plates 23 may each comprise the fixed part connecting with bottom plate 21
231 and the movable part 232 that is detachably connected with fixed part 231.The edge of movable part 232 and the side of fixed part 231
Edge is provided with semicircular indentations, when movable part 232 is connect with fixed part 231, the semicircular indentations of movable part 232
Through-hole 23a is formed with the semicircular indentations of fixed part 231.Side plate 23 is arranged to dismountable fixed part 231 and activity
Loop aerial 10 can be placed on fixed part 231 in this way when loop aerial 10 to be connect with antenna box 20 by part 232
Semicircular indentations in, then movable part 232 connect with fixed part 231, facilitates the company of loop aerial 10 Yu antenna box 20
It connects.
As shown in figure 4, fixed part 231 may include the fixed plate 2311 and two guide plates 2312 of co-planar arrangement.Two
A guide plate 2312 is connect with the same side of fixed plate 2311, and two guide plates 2312 are spaced apart from each other distribution, two guide plates
2312 and fixed plate 2311 surround accommodate movable part 232 installation card slot 231a.As shown in figure 5, movable part 232 has phase
Mutually two parallel guide chutes 2321, two guide plates 2312 are located in two guide chutes 2321.By movable part
Points 232 with fixed part 231 when connect, movable part 232 can be inserted into and be installed in card slot 231a, the slide-in of guide plate 2312
Guide chute 2321, structure is simple, facilitates the dismounting of antenna assembly.
Optionally, the first fixation hole 2312a, the side of two guide chutes 2321 can be set on two guide plates 2312
The second fixation hole 232a can be set on wall, movable part 232 and fixed part 231 are by being plugged on the second fixation hole 232a
With in the first fixation hole 2312a bolt connects.Movable part 232 and fixed part 231 can be connected as one, be kept away in this way
Exempt from the loosening of loop aerial 10, and is connected by screw bolts convenient for disassembly and assembly.
It is also provided with clump weight 26 in antenna box 20, the center of gravity of antenna assembly is reduced by clump weight 26, is being used
When antenna box 20 directly can be placed in ground, can topple over after clump weight 26 is set to avoid antenna assembly.
Referring to Fig.1, clump weight 26 can be set on bottom plate 21.Fig. 6 is a kind of clump weight provided in an embodiment of the present invention
Structural schematic diagram.As shown in fig. 6, clump weight 26 can be in a rectangular parallelepiped shape.Loop aerial 10 can be fixed on by clip 27
On clump weight 26, keep loop aerial 10 more stable.
Fluted 26a can be set on clump weight 26, loop aerial 10 can be located in groove 26a, the inner wall of groove 26a
It is bonded with the outer wall of loop aerial 10, loop aerial 10 can be made to install more stable.
The total weight of antenna assembly is arranged within 4kg, to facilitate staff to carry.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of antenna assembly, which is characterized in that including loop aerial (10) and antenna box (20), loop aerial (10) packet
Ring support (11), coil (12) and ring sleeve (13) are included, the ring sleeve (13) is set in the ring support (11)
Outside, the coil (12) is located in the ring sleeve (13), and the coil (12) is wrapped on the ring support (11), institute
Stating antenna box (20) includes bottom plate positioned opposite (21), top plate (22) and the connection top plate (22) and the bottom plate (21)
Opposite two side plate (23) of multiple side plates (23), the antenna box (20) is equipped with through-hole (23a), the antenna box (20)
It is set on the loop aerial (10) by the through-hole (23a), the end of a thread (121) of the coil (12) is located at the antenna
In box (20), control panel (24) are equipped in the antenna box (20), the end of a thread (121) and the control panel of the coil (12)
(24) it connects.
2. antenna assembly according to claim 1, which is characterized in that the ring sleeve (13) includes positioned opposite
One semicanal (131) and the second semicanal (132), first semicanal (131) and second semicanal (132) are annular in shape, institute
It states the first semicanal (131) and second semicanal (132) is detachably connected.
3. antenna assembly according to claim 1, which is characterized in that the outer wall of the ring sleeve (13) has at least two
A annular groove (13a), at least two annular groove (13a) and described two side plates (23) are clamped.
4. antenna assembly according to claim 1, which is characterized in that the number of turns of the coil (12) is 40~60 circles.
5. antenna assembly according to any one of claims 1 to 4, which is characterized in that described two side plates (23) include
The fixed part (231) being connect with the bottom plate (21) and the movable part being detachably connected with the fixed part (231)
(232), the edge of the movable part (232) and the edge of the fixed part (231) are provided with semicircular indentations, work as institute
When stating movable part (232) and being connect with the fixed part (231), the semicircular indentations of the movable part (232) with it is described
The semicircular indentations of fixed part (231) form the through-hole (23a).
6. antenna assembly according to claim 5, which is characterized in that the fixed part (231) includes co-planar arrangement
Fixed plate (2311) and two guide plates (2312), the same side of described two guide plates (2312) and the fixed plate (2311)
Side connection, described two guide plates (2312) are spaced apart from each other distribution, described two guide plates (2312) and the fixed plate
(2311) the installation card slot (231a) for accommodating the movable part (232) is surrounded, the movable part (232), which has, to be parallel to each other
Two guide chutes (2321), described two guide plates (2312) are located in two guide chutes (2321).
7. antenna assembly according to claim 6, which is characterized in that be provided with first on described two guide plates (2312)
Fixation hole (2312a) is provided with the second fixation hole (232a), the movable part on the side wall of two guide chutes (2321)
Divide (232) and the fixed part (231) by being plugged on second fixation hole (232a) and first fixation hole
Bolt in (2312a) connects.
8. antenna assembly according to any one of claims 1 to 4, which is characterized in that the top plate (22) is equipped with connection
Device (25), the control panel (24) connect with the connector (25).
9. antenna assembly according to any one of claims 1 to 4, which is characterized in that the diameter of the loop aerial (10)
For 700mm~900mm.
10. antenna assembly according to any one of claims 1 to 4, which is characterized in that the frequency of the loop aerial (10)
No more than 28KHz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811558642.8A CN109728402A (en) | 2018-12-19 | 2018-12-19 | Antenna assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811558642.8A CN109728402A (en) | 2018-12-19 | 2018-12-19 | Antenna assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109728402A true CN109728402A (en) | 2019-05-07 |
Family
ID=66296900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811558642.8A Pending CN109728402A (en) | 2018-12-19 | 2018-12-19 | Antenna assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109728402A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112490664A (en) * | 2020-09-22 | 2021-03-12 | 光古(成都)微波科技有限公司 | High-gain low-noise short-wave loop antenna |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2924814Y (en) * | 2006-07-12 | 2007-07-18 | 泉州市铁通电子设备有限公司 | Loop antenna device for induction wireless communication system |
| CN201401739Y (en) * | 2009-04-21 | 2010-02-10 | 上海环东光电科技有限公司 | LED fluorescent tube |
| CN201466208U (en) * | 2009-07-16 | 2010-05-12 | 成都中亚通茂科技有限公司 | All-band active antenna |
| CN202797251U (en) * | 2012-09-26 | 2013-03-13 | 中国船舶重工集团公司第七一○研究所 | Follow-up antenna installing seat |
| CN203071235U (en) * | 2012-12-20 | 2013-07-17 | 福州华虹智能科技开发有限公司 | Mine radio wave penetration system signal receiving loop antenna |
| CN204927485U (en) * | 2015-08-12 | 2015-12-30 | 辽宁顺邦通信技术股份有限公司 | Pole communication device is embraced to roof counter weight formula |
| CN105240620A (en) * | 2015-11-01 | 2016-01-13 | 赵洪 | Single-layer cable fixing clamp |
| EP3012670A1 (en) * | 2014-10-22 | 2016-04-27 | Services Petroliers Schlumberger | Flat metallic strip toroidal coil |
| CN205520171U (en) * | 2016-04-28 | 2016-08-31 | 沈海云 | Gathering line electromagnetic heating device |
| CN207303340U (en) * | 2017-08-31 | 2018-05-01 | 中国石油天然气集团公司 | A kind of antenna mounting device |
| CN207559053U (en) * | 2017-12-22 | 2018-06-29 | 福州华虹智能科技股份有限公司 | Multiple-frequency signal receiving loop |
-
2018
- 2018-12-19 CN CN201811558642.8A patent/CN109728402A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2924814Y (en) * | 2006-07-12 | 2007-07-18 | 泉州市铁通电子设备有限公司 | Loop antenna device for induction wireless communication system |
| CN201401739Y (en) * | 2009-04-21 | 2010-02-10 | 上海环东光电科技有限公司 | LED fluorescent tube |
| CN201466208U (en) * | 2009-07-16 | 2010-05-12 | 成都中亚通茂科技有限公司 | All-band active antenna |
| CN202797251U (en) * | 2012-09-26 | 2013-03-13 | 中国船舶重工集团公司第七一○研究所 | Follow-up antenna installing seat |
| CN203071235U (en) * | 2012-12-20 | 2013-07-17 | 福州华虹智能科技开发有限公司 | Mine radio wave penetration system signal receiving loop antenna |
| EP3012670A1 (en) * | 2014-10-22 | 2016-04-27 | Services Petroliers Schlumberger | Flat metallic strip toroidal coil |
| CN204927485U (en) * | 2015-08-12 | 2015-12-30 | 辽宁顺邦通信技术股份有限公司 | Pole communication device is embraced to roof counter weight formula |
| CN105240620A (en) * | 2015-11-01 | 2016-01-13 | 赵洪 | Single-layer cable fixing clamp |
| CN205520171U (en) * | 2016-04-28 | 2016-08-31 | 沈海云 | Gathering line electromagnetic heating device |
| CN207303340U (en) * | 2017-08-31 | 2018-05-01 | 中国石油天然气集团公司 | A kind of antenna mounting device |
| CN207559053U (en) * | 2017-12-22 | 2018-06-29 | 福州华虹智能科技股份有限公司 | Multiple-frequency signal receiving loop |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112490664A (en) * | 2020-09-22 | 2021-03-12 | 光古(成都)微波科技有限公司 | High-gain low-noise short-wave loop antenna |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190507 |
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| RJ01 | Rejection of invention patent application after publication |