CN212569788U - RFID card reader - Google Patents
RFID card reader Download PDFInfo
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- CN212569788U CN212569788U CN202021499198.XU CN202021499198U CN212569788U CN 212569788 U CN212569788 U CN 212569788U CN 202021499198 U CN202021499198 U CN 202021499198U CN 212569788 U CN212569788 U CN 212569788U
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- metal
- card reader
- protective shell
- window
- metal protective
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Abstract
The utility model discloses a RFID card reader, which comprises a metal protective shell and a RFID card reader body fixed in the metal protective shell; a window is formed in the metal protective shell, and a radio frequency antenna of the RFID card reader body is located in the window; the metal protection shell is provided with a broken groove used for preventing eddy current from forming a closed loop, and the broken groove extends to the outer edge of the metal protection shell from the window. The utility model discloses an taking on metal protective housing just to set up window, increase anti metal absorbing material layer and set up modes such as disconnected groove in radio frequency antenna department, having weakened the vortex that electromagnetic induction formed in very big degree, reduced the influence of metal to radio frequency antenna work, make the RFID card reader can work in metal installation environment, when especially adopting the embedded card reader mounting means of metal material, still can guarantee normal work.
Description
Technical Field
The utility model belongs to the technical field of wireless communication and specifically relates to a RFID card reader is related to.
Background
Because the metal material has very strong shielding effect to the radio frequency signal, and because the RFID antenna carries out signal transmission through high frequency, can form the vortex on metal casing when high frequency signal meets metal material, the existence of vortex and metal material shielding to the radio frequency signal have weakened the intensity of high frequency signal greatly, consequently the RFID card reader adopts plastic material as protective housing to fix mostly at present, but plastic material intensity is low, especially yielding in the environment that the load is heavier, and anti-destruction ability is poor, short service life.
Disclosure of Invention
An object of the utility model is to provide a can be in the RFID card reader of work of metal installation environment.
In order to achieve the above purpose, the utility model adopts the following technical proposal:
the RFID card reader comprises a metal protective shell and an RFID card reader body fixed in the metal protective shell; a window is formed in the metal protective shell, and a radio frequency antenna of the RFID card reader body is located in the window; the metal protection shell is provided with a broken groove used for preventing eddy current from forming a closed loop, and the broken groove extends to the outer edge of the metal protection shell from the window.
The two windows are respectively arranged on the front side surface and the back side surface which are opposite to each other of the metal protective shell.
The window is arranged on the front side face of the metal protective shell, and a metal wave-absorbing resistant material layer is arranged between the radio frequency antenna and the rear side face of the metal protective shell.
And an insulating bonding layer is filled in the broken groove, so that an inner cavity of the metal protective shell forms a closed space.
The utility model discloses an taking on metal protective housing just to set up window, increase anti metal absorbing material layer and set up modes such as disconnected groove in radio frequency antenna department, having weakened the vortex that electromagnetic induction formed in very big degree, reduced the influence of metal to radio frequency antenna work, make the RFID card reader can work in metal installation environment, when especially adopting the embedded card reader mounting means of metal material, still can guarantee normal work.
Drawings
Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention.
Fig. 2 is a schematic structural diagram of embodiment 2 of the present invention.
Detailed Description
The following describes embodiments of the present invention in detail with reference to the drawings, which are implemented on the premise of the technical solution of the present invention, and detailed embodiments and specific operation procedures are provided, but the scope of the present invention is not limited to the following embodiments.
Example 1:
as shown in fig. 1, the RFID card reader of the present invention is composed of a metal protective casing and a RFID card reader body fixed in the metal protective casing; the front side face and the back side face, opposite to each other, of the metal protection shell are respectively provided with a window, and the radio frequency antenna of the RFID card reader body is arranged right opposite to the front window and the back window, so that the metal protection shell is prevented from shielding electromagnetic waves received by the radio frequency antenna.
The metal protective shell is provided with the broken groove, the broken groove extends to the outer edge of the metal protective shell from the front window and the rear window, and the broken groove prevents the vortex closed loop from being formed on the shell, so that the capability of the radio frequency antenna for receiving electromagnetic waves is further improved. The epoxy resin insulating bonding layer is filled in the broken groove, so that an inner cavity of the metal protective shell forms a closed space, and the strength of the metal protective shell is improved on the premise of playing a dustproof purpose.
Example 2:
as shown in fig. 2, the RFID card reader of the present invention comprises a metal protective casing and a RFID card reader body fixed therein; a window is formed in the front side face of the metal protective shell, the radio-frequency antenna of the RFID card reader body is arranged opposite to the window, and a metal wave-absorbing resistant material layer is arranged between the radio-frequency antenna and the rear side face of the metal protective shell, so that the metal protective shell is prevented from shielding electromagnetic waves received by the radio-frequency antenna.
The metal protective shell is provided with a broken groove, the broken groove extends to the outer edge of the metal protective shell from the window, and the broken groove prevents a vortex closed loop from being formed on the shell, so that the capability of the radio frequency antenna for receiving electromagnetic waves is further improved. The epoxy resin insulating bonding layer is filled in the broken groove, so that an inner cavity of the metal protective shell forms a closed space, and the strength of the metal protective shell is improved on the premise of playing a dustproof purpose.
Claims (4)
1. An RFID card reader comprises a metal protective shell and an RFID card reader body fixed in the metal protective shell; the method is characterized in that: a window is formed in the metal protective shell, and a radio frequency antenna of the RFID card reader body is located in the window; the metal protection shell is provided with a broken groove used for preventing eddy current from forming a closed loop, and the broken groove extends to the outer edge of the metal protection shell from the window.
2. The RFID reader of claim 1, wherein: the two windows are respectively arranged on the front side surface and the back side surface which are opposite to each other of the metal protective shell.
3. The RFID reader of claim 1, wherein: the window is arranged on the front side face of the metal protective shell, and a metal wave-absorbing resistant material layer is arranged between the radio frequency antenna and the rear side face of the metal protective shell.
4. The RFID reader according to any of claims 1-3, wherein: and an insulating bonding layer is filled in the broken groove, so that an inner cavity of the metal protective shell forms a closed space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021499198.XU CN212569788U (en) | 2020-07-27 | 2020-07-27 | RFID card reader |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021499198.XU CN212569788U (en) | 2020-07-27 | 2020-07-27 | RFID card reader |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212569788U true CN212569788U (en) | 2021-02-19 |
Family
ID=74630971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021499198.XU Active CN212569788U (en) | 2020-07-27 | 2020-07-27 | RFID card reader |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212569788U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114361766A (en) * | 2021-12-20 | 2022-04-15 | 武汉天喻信息产业股份有限公司 | Racket ring bracelet with non-connection function |
-
2020
- 2020-07-27 CN CN202021499198.XU patent/CN212569788U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114361766A (en) * | 2021-12-20 | 2022-04-15 | 武汉天喻信息产业股份有限公司 | Racket ring bracelet with non-connection function |
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