CN209963259U - Near field antenna with good conduction effect - Google Patents
Near field antenna with good conduction effect Download PDFInfo
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- CN209963259U CN209963259U CN201921281379.2U CN201921281379U CN209963259U CN 209963259 U CN209963259 U CN 209963259U CN 201921281379 U CN201921281379 U CN 201921281379U CN 209963259 U CN209963259 U CN 209963259U
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- coaxial cable
- near field
- field antenna
- circuit board
- bottom plate
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Abstract
The utility model discloses a near field antenna with good conduction effect, which belongs to the technical field of near field antennas, and comprises a near field antenna main body, wherein the near field antenna main body mainly comprises an aluminum bottom plate, an EVA pad and a circuit board, the EVA pad is arranged between the aluminum bottom plate and the circuit board, a coaxial cable is also arranged on the near field antenna main body, one end of the coaxial cable, which is far away from the near field antenna main body, is fixedly provided with an SMA joint, the coaxial cable mainly comprises a coaxial cable inner conductor, a coaxial cable intermediate insulation layer and a coaxial cable outer conductor, and the coaxial cable inner conductor passes through the circuit board to be conducted with an oscillator on the circuit board; through being provided with the copper gasket between aluminium bottom plate and coaxial cable, utilize the welding effect that copper has more convenient tin of going up than aluminium for when the copper gasket links together the back and passes through stainless steel screw installation on aluminium bottom plate with the coaxial cable outer conductor, and then realized good the switching on between coaxial cable outer conductor and the aluminium bottom plate, and switch on effectually.
Description
Technical Field
The utility model belongs to the technical field of the near field antenna, concretely relates to switch on effectual near field antenna.
Background
The near-field antenna is an antenna with the energy radiation centralized and restrained in a relatively close range right above the antenna, the reading effect in a close range is ensured, the peripheral electronic tags are not read by mistake or read in series, the far-field antenna has large energy radiation angle, long distance and more blind areas, and particularly the identification blind area is easy to form at the position close to the antenna,
the signal conduction effect of the original near-field antenna is poor, and the aluminum bottom plate is connected with the coaxial cable through aluminum, so that the normal use of the near-field antenna can be influenced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a switch on effectual near field antenna to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: a near-field antenna with good conduction effect comprises a near-field antenna main body, wherein the near-field antenna main body mainly comprises an aluminum bottom plate, an EVA pad and a circuit board, the EVA pad is arranged between the aluminum bottom plate and the circuit board, the near-field antenna main body is also provided with a coaxial cable, the end of the coaxial cable far away from the near-field antenna main body is fixedly provided with an SMA joint, the coaxial cable mainly comprises a coaxial cable inner conductor, a coaxial cable middle insulation layer and a coaxial cable outer conductor, the coaxial cable inner conductor penetrates through the circuit board to be conducted with the vibrator on the circuit board, the coaxial cable outer conductor is welded with one side face of the copper gasket together, the copper gasket is fixedly arranged on one side surface of the aluminum bottom plate through a stainless steel screw, the aluminum bottom plate is also provided with a wire core, be provided with the soldering tin dish on the circuit board, the sinle silk passes EVA pad and switches on mutually with the soldering tin dish.
Preferably, the number of the stainless steel screws is several.
Preferably, the EVA pad is provided with a through hole for the wire core and the coaxial cable to pass through.
Preferably, the front surface of the EVA pad is bonded with a gasket.
Preferably, the circuit on the circuit board extends from an inner circle to an outer wave, and four corners of the circuit outside the circuit board are arranged in a symmetrical wave crest mode.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a switch on effectual near field antenna, through be provided with the copper gasket between aluminium bottom plate and coaxial cable, utilize the welding effect that copper more made things convenient for the tinning than aluminium has for when the copper gasket links together with the coaxial cable outer conductor after and through stainless steel screw installation on the aluminium bottom plate, and then realized good switching on between coaxial cable outer conductor and the aluminium bottom plate, and switch on effectually.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic diagram of the explosion structure of the present invention;
FIG. 3 is a schematic structural diagram of a left side view section of the present invention;
in the figure: 1. stainless steel screws; 2. an aluminum base plate; 3. an EVA pad; 4. a copper gasket; 5. a coaxial cable; 6. an SMA joint; 7. a circuit board; 8. a near field antenna main body; 9. a wire core; 10. soldering a tin plate; 11. a coaxial cable inner conductor; 12. a coaxial cable intermediate insulating layer; 13. a coaxial cable outer conductor.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides a technical solution: a near field antenna with good conduction effect comprises a near field antenna main body 8, wherein the near field antenna main body 8 mainly comprises an aluminum bottom plate 2, an EVA pad 3 and a circuit board 7, the EVA pad 3 is arranged between the aluminum bottom plate 2 and the circuit board 7, a coaxial cable 5 is also arranged on the near field antenna main body 8, one end of the coaxial cable 5 far away from the near field antenna main body 8 is fixedly provided with an SMA joint 6, the coaxial cable 5 mainly comprises a coaxial cable inner conductor 11, coaxial cable intermediate insulation layer 12 and coaxial cable outer conductor 13 constitute, coaxial cable inner conductor 11 passes circuit board 7 and switches on mutually with the oscillator on the circuit board 7, coaxial cable outer conductor 13 and a side welding of copper gasket 4 are in the same place, copper gasket 4 passes through 1 fixed mounting of stainless steel screw in a side of aluminium bottom plate 2, still is provided with sinle silk 9 on the aluminium bottom plate 2, be provided with soldering tin dish 10 on the circuit board 7, sinle silk 9 passes EVA pad 3 and switches on mutually with soldering tin dish 10.
In this embodiment, the EVA mat 3 refers to an ethylene-vinyl acetate copolymer and a rubber-plastic foam material made of the ethylene-vinyl acetate copolymer, and the EVA mat 3 is used to isolate the aluminum base plate 2 from the circuit board 7 for protection.
In this embodiment, through being provided with copper gasket 4 between aluminium bottom plate 2 and coaxial cable 5, utilize the welding effect that copper has more convenient tinning than aluminium for copper gasket 4 links together with coaxial cable outer conductor 13 after and when installing on aluminium bottom plate 2 through stainless steel screw 1, and then has realized good the switching on between coaxial cable outer conductor 13 and the aluminium bottom plate 2, and it is effectual to switch on.
Specifically, the number of the stainless steel screws 1 is several; utilize a plurality of stainless steel screws 1 to install fixedly in step the copper cable, it is fixed effectual.
Specifically, the EVA pad 3 is provided with a through hole through which the core 9 and the coaxial cable 5 pass; so that the wire core 9 and the coaxial cable 5 can respectively pass through the EVA pad 3 to be conducted with the soldering tin plate 10 and the vibrator on the circuit board 7.
Specifically, gaskets are bonded on the front surfaces of the EVA pads 3; the inner and outer double-layer gaskets are utilized for effective protection, and the protection effect is good.
Specifically, the circuit on the circuit board 7 extends from an inner circle to an outer wave, and four corners of the circuit outside the circuit board 7 are arranged in a symmetrical wave crest manner; the circuit arrangement is attractive and concise by expanding from a circle to a wave shape, and the adjacent circuits are not in contact with each other, so that the mutual interference between the circuits is avoided.
The utility model discloses a theory of operation and use flow: through being provided with copper gasket 4 between aluminium bottom plate 2 and coaxial cable 5, utilize the welding effect that copper has more convenient tin of going up than aluminium for copper gasket 4 links together with coaxial cable outer conductor 13 after and when installing on aluminium bottom plate 2 through stainless steel screw 1, and then has realized good the switching on between coaxial cable outer conductor 13 and the aluminium bottom plate 2, and switch on effectually.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a switch on effectual near field antenna, includes near field antenna main part (8), its characterized in that: near field antenna main part (8) mainly comprise aluminium bottom plate (2), EVA pad (3) and circuit board (7), EVA pad (3) sets up between aluminium bottom plate (2) and circuit board (7), still be provided with coaxial cable (5) on near field antenna main part (8), the one end fixed mounting that near field antenna main part (8) were kept away from to coaxial cable (5) has SMA to connect (6), coaxial cable (5) mainly comprise coaxial cable inner conductor (11), coaxial cable intermediate insulation layer (12) and coaxial cable outer conductor (13), coaxial cable inner conductor (11) pass circuit board (7) and switch on with the oscillator on circuit board (7) mutually, coaxial cable outer conductor (13) are in the same place with a side welding of copper gasket (4), copper gasket (4) are through a side of stainless steel screw (1) fixed mounting in aluminium bottom plate (2), still be provided with sinle silk (9) on aluminium bottom plate (2), be provided with soldering tin dish (10) on circuit board (7), sinle silk (9) pass EVA pad (3) and switch on mutually with soldering tin dish (10).
2. A near field antenna with good conduction effect as claimed in claim 1, characterized in that: the number of the stainless steel screws (1) is several.
3. A near field antenna with good conduction effect as claimed in claim 1, characterized in that: the EVA pad (3) is provided with a through hole for the wire core (9) and the coaxial cable (5) to pass through.
4. A near field antenna with good conduction effect as claimed in claim 1, characterized in that: gaskets are bonded on the front surfaces of the EVA pads (3).
5. A near field antenna with good conduction effect as claimed in claim 1, characterized in that: the circuit on the circuit board (7) moves towards the wave expansion from the inner circle to the outer circle, and four corners of the circuit board (7) external circuit are arranged in symmetrical wave crest.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921281379.2U CN209963259U (en) | 2019-08-09 | 2019-08-09 | Near field antenna with good conduction effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921281379.2U CN209963259U (en) | 2019-08-09 | 2019-08-09 | Near field antenna with good conduction effect |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209963259U true CN209963259U (en) | 2020-01-17 |
Family
ID=69249229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921281379.2U Active CN209963259U (en) | 2019-08-09 | 2019-08-09 | Near field antenna with good conduction effect |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209963259U (en) |
-
2019
- 2019-08-09 CN CN201921281379.2U patent/CN209963259U/en active Active
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