Card reading device

Abstract

A card reading device comprises a main body, a card reading module and a radiating antenna. The card reading module is arranged on the main body, and the card reading module is provided with a card reading slot; and the radiating antenna covers the inner wall of the card reading slot. The radiating antenna covers the inner wall of the card reading slot, so that the radiating antenna can utilize a large space, the effective radiating area is large, the peripheral clearance area is large, the radiating efficiency is high, and the performance of the radiating antenna is excellent. And meanwhile, the radiating antenna covers the inner wall of the card reading slot, so that the wear resistance of the card reading slot can be improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of wireless transmission, and particularly relates to a card reading device. BACKGROUND

[0002] A POS (point of sales terminal) machine is a transaction device provided with a magnetic head card reading module, and is usually used in various non-cash transaction places. The POS machine can read information on a magnetic stripe card through the magnetic head card reading module to realize non-cash transaction.

[0003] At present, some existing POS machines have an antenna, and can realize the function of wireless communication. On the one hand, with the market demand, the POS machine is required to have more communication frequency bands to support signal reception and transmission of 2G, 3G, 4G, 5G, WIFI / GPS / BT and other frequency bands, so it is required to have a larger antenna or more antennas to adapt to more application scenarios. On the other hand, the POS machine usually pursues beauty and portability, which leads to that the circuit of the POS machine becomes more and more compact, and the electronic devices become more and more compact, so it is required to limit the size of the antenna, and thus the performance and stability of the antenna are affected. CONTENT OF THE INVENTION

[0004] The application aims to provide a card reading device, and aims to solve the problem that the conventional POS machine cannot simultaneously consider the portability of the device and the performance of the antenna.

[0005] The first aspect of the application embodiment provides a card reading device, comprising: a main body; a card reading module arranged on the main body, the card reading module being provided with a card reading slot; and a radiation antenna covering an inner wall of the card reading slot.

[0006] In an embodiment, the card reading slot comprises a first inner wall, a second inner wall and a third inner wall, the first inner wall, the second inner wall and the third inner wall being used to form a card reading channel for a card to pass through, wherein the first inner wall is a bottom surface of the card reading slot, and the second inner wall and the third inner wall are opposite side walls of the card reading slot.

[0007] In an embodiment, the radiation antenna covers the first inner wall.

[0008] In one embodiment, the radiation antenna comprises a main radiation part, a feed lead, a resonance lead and a grounding part; the main radiation part extends from a first end of the main radiation part to a second end of the main radiation part along a direction parallel to the card reading channel, the main radiation part is provided with a feed point, a resonance point and a grounding point, the resonance point is located between the feed point and the second end of the main radiation part, and the grounding point is located between the resonance point and the second end of the main radiation part; the feed lead is used to connect the feed point and a feed circuit, the resonance lead is used to connect the resonance point and a resonance circuit, and the grounding part is connected with the grounding point and is coupled with a grounding metal layer.

[0009] In one embodiment, the main radiation part covers the first inner wall.

[0010] In one embodiment, the radiation antenna is used to emit a first radio frequency signal, and a resonance frequency of the first radio frequency signal is inversely proportional to a distance between the feed point and the second end of the main radiation part.

[0011] In one embodiment, the radiation antenna is used to emit a second radio frequency signal, and a resonance frequency of the second radio frequency signal is inversely proportional to a distance between the feed point and the grounding point; the grounding point is a point in a contact position of the grounding part and the main radiation part closest to the second end of the main radiation part; the resonance frequency of the second radio frequency signal is greater than the resonance frequency of the first radio frequency signal.

[0012] In one embodiment, the radiation antenna is used to emit a third radio frequency signal, and a frequency of the third radio frequency signal is inversely proportional to a sum of a length of the feed lead, a length of the resonance lead and a distance between the feed point and the resonance point; the resonance frequency of the third radio frequency signal is greater than the resonance frequency of the second radio frequency signal.

[0013] In one embodiment, the card reading device further comprises a card reading head, and the card reading head is arranged at a tail end of the card reading channel.

[0014] In one embodiment, the first inner wall is provided with a plurality of fixing protrusions, and the fixing protrusions are used to embed corresponding fixing holes on the main radiation part to fix the radiation antenna.

[0015] Compared with the prior art, the embodiment of the present application has the beneficial effects that: by covering the radiation antenna on the inner wall of the card reading slot, the radiation antenna can utilize a larger space, has a large effective radiation area, a large peripheral clearance area and high radiation efficiency, and has superior performance.

[0016] Meanwhile, covering the radiation antenna on the inner wall of the card reading slot can also improve the wear resistance of the card reading slot. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 A structural schematic diagram of a card reading device provided by an embodiment of the present application is shown.

[0018] Figure 2 A schematic diagram of a radiation antenna provided by an embodiment of the present application is shown.

[0019] Figure 3 A specific structural diagram of a radiation antenna provided by an embodiment of the present application is shown.

[0020] Figure 4 A signal strength waveform diagram of a radiation antenna provided by an embodiment of the present application is shown. DETAILED DESCRIPTION

[0021] In order to make the technical problems to be solved, technical solutions and beneficial effects of the present application clearer, the present application will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not intended to limit the present application.

[0022] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0023] It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0024] In addition, the terms "first", "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0025] Figure 1 A structural schematic diagram of a card reading device provided by an embodiment of the present application is shown. For ease of description, only parts related to the present embodiment are shown, and are described in detail as follows:

[0026] A card reading device includes a main body 100, a card reading module 200 and a radiation antenna 300.

[0027] The card reading module 200 is arranged on the main body 100, and the card reading module 200 is provided with a card reading slot; and the radiation antenna 300 is covered on the inner wall of the card reading slot.

[0028] By covering the radiation antenna 300 on the inner wall of the card reading slot, the radiation antenna 300 can utilize a larger space, has a large effective radiation area, a large peripheral clearance area, and high radiation efficiency, and has superior performance.

[0029] Meanwhile, covering the radiation antenna 300 on the inner wall of the card reading slot can also improve the wear resistance of the card reading slot.

[0030] The radiation antenna 300 can be machined from a hardware sheet.

[0031] In an embodiment, the card reading slot includes a first inner wall, a second inner wall, and a third inner wall.

[0032] The first inner wall, the second inner wall, and the third inner wall are used to form a card reading channel for a card to pass through, Figure 1 That is, a structural schematic view of the card reading device viewed in a direction parallel to the card reading channel. It can be understood that the first inner wall, the second inner wall, and the third inner wall are U-shaped when viewed in the direction parallel to the card reading channel. The first inner wall is the bottom surface of the card reading slot, and the second inner wall and the third inner wall are opposite side walls of the card reading slot.

[0033] The second inner wall can also be part of the shell of the main body 100.

[0034] When it is necessary to read the card information, the card can be inserted into the card reading channel and slid, and the card reading head 400 can read the information of the card.

[0035] In an embodiment, the radiation antenna 300 covers the first inner wall.

[0036] The position covered by the radiation antenna 300 can be determined according to actual needs.

[0037] By covering the radiation antenna 300 on one of the inner walls, the radiation antenna 300 can be directly exposed without being blocked by other structures or modules, so that the radiation antenna 300 has higher performance.

[0038] Meanwhile, since the radiation antenna 300 is made of metal material and has higher hardness, the service life of the card reading slot can be improved.

[0039] In an embodiment, as shown in Figure 2 , Figure 3As shown, the radiation antenna 300 includes a main radiation part 310, a feeding lead 320, a resonance lead 330, and a grounding part 340; the main radiation part 310 extends from a first end of the main radiation part 310 to a second end of the main radiation part 310 along a direction parallel to the card reading channel (i.e., the length direction of the card reading slot), and the main radiation part 310 is provided with a feeding point, a resonance point, and a grounding point; the resonance point is located between the feeding point and the second end of the main radiation part 310, and the grounding point is located between the resonance point and the second end of the main radiation part 310; the feeding lead 320 is used to connect the feeding point and a feeding circuit, the resonance lead 330 is used to connect the resonance point and a resonance circuit, and the grounding part 340 is connected with the grounding point and is coupled with a grounding metal layer. The feeding circuit is used to provide a radiation signal to the radiation antenna 300, and the resonance circuit is used to configure a resonance parameter of the radiation antenna 300. The grounding metal layer can be a grounding metal layer of a battery located in the main body 100.

[0040] It should be noted that by constructing the feeding lead 320, the resonance lead 330, and the grounding part 340 on the basis of the main radiation part 310, the sending / receiving of multi-band signals can be realized.

[0041] By adjusting the parameters of the main radiation part 310, the feeding lead 320, the resonance lead 330, and the grounding part 340, the specific parameters of the multiple frequency bands of the signals that can be sent / received by the radiation antenna 300 can be adjusted.

[0042] For example, by adjusting the length of the main radiation part 310 in the first direction, the distance between the feeding point and the second end of the main radiation part 310, the distance between the feeding point and the grounding point, the length of the feeding lead 320, the length of the resonance lead 330, and the distance between the feeding point and the resonance point, the specific parameters of the multiple frequency bands of the signals that can be sent / received by the radiation antenna 300 can be adjusted.

[0043] Specifically, the radiation antenna 300 of the embodiment can satisfy three-band resonance, and the three-band resonance specifically includes a low frequency band (Low band), a middle frequency band (Middle band), and a high frequency band (High band).

[0044] In an embodiment, the main radiation part 310 covers the first inner wall.

[0045] As shown in FIG. 3, the main radiation part 310 covers the first inner wall. Figure 1 Since the first inner wall is directly opposite the card reading slot opening, compared with covering the main radiation part 310 on the second inner wall or the third inner wall, covering the main radiation part 310 on the first inner wall can improve the radiation performance of the radiation antenna 300.

[0046] In some embodiments, the main radiation part 310 covers the entire first inner wall.

[0047] In an embodiment, the radiation antenna 300 is used to emit a first radio frequency signal, a resonance frequency of the first radio frequency signal being inversely proportional to a spacing between the feed point and the second end of the main radiation part 310.

[0048] The main radiation part 310 and the feed lead 320 can constitute a PIFA type monopole radiation antenna 300.

[0049] The spacing between the feed point and the second end of the main radiation part 310 is equal to 1 / 4 wavelength of the first radio frequency signal. The first radio frequency signal corresponds to a low frequency band.

[0050] Meanwhile, by adjusting specific parameters of the resonance lead 330, a resonance point of the radiation antenna 300 corresponding to the first radio frequency signal can be adjusted, so that the radiation antenna 300 has a higher resonance Q value (a relatively wide bandwidth) in the low frequency band.

[0051] In an embodiment, the radiation antenna 300 is used to emit a second radio frequency signal, a resonance frequency of the second radio frequency signal being inversely proportional to a spacing between the feed point and a grounding point; the grounding point is a point of a contact position between the grounding part 340 and the main radiation part 310 closest to the second end of the main radiation part 310; the resonance frequency of the second radio frequency signal is greater than the resonance frequency of the first radio frequency signal.

[0052] Specifically, the grounding part 340 can be a rectangular metal sheet, one side of the grounding part 340 is fixed on an edge of the main radiation part 310, and the specific grounding point is a point of a side length of the grounding part 340 farthest from the first end of the main radiation part 310, that is, a point closest to the second end of the main radiation part 310.

[0053] The main radiation part 310 and the grounding part 340 can constitute a PIUA type radiation antenna 300.

[0054] The spacing between the feed point and the grounding point is equal to 1 / 2 wavelength of the second radio frequency signal. The second radio frequency signal corresponds to a middle frequency band.

[0055] Meanwhile, by adjusting specific parameters of the resonance lead 330, a resonance point of the radiation antenna 300 corresponding to the second radio frequency signal can be adjusted, so that the radiation antenna 300 has a higher resonance Q value (a relatively wide bandwidth) in the middle frequency band.

[0056] By adjusting the spacing between the grounding part 340 and the grounding metal layer, the size of the coupling capacitance formed between the grounding part 340 and the grounding metal layer can be adjusted. The greater the coupling capacitance, the higher the radiation efficiency of the second radio frequency signal and the deeper the resonance.

[0057] It should be noted that the size of the coupling capacitor also affects the radiation efficiency of the first radio frequency signal and the third radio frequency signal. The larger the coupling capacitor, the lower the radiation efficiency of the first radio frequency signal and the third radio frequency signal. Therefore, the size of the coupling capacitor needs to be reasonably configured according to the actual situation.

[0058] In some embodiments, the ground part 340 can extend to the inside of the main body 100 and have a certain included angle with the main radiation part 310 to save the space inside the main body 100. For example, the ground part 340 can be bent to the second direction so that the included angle between the ground part 340 and the main radiation part 310 is 90°, and the second direction is perpendicular to the main radiation part 310.

[0059] In an embodiment, the radiation antenna 300 is used to emit a third radio frequency signal, and the frequency of the third radio frequency signal is inversely proportional to the sum of the length of the feed lead 320, the length of the resonance lead 330, and the distance between the feed point and the resonance point. The resonance frequency of the third radio frequency signal is greater than the resonance frequency of the second radio frequency signal.

[0060] The feed lead 320, the resonance lead 330, and the main radiation part 310 can constitute a PIUA type radiation antenna 300. The sum of the length of the feed lead 320, the length of the resonance lead 330, and the distance between the feed point and the resonance point is equal to 1 / 2 wavelength of the third radio frequency signal.

[0061] In some embodiments, the feed lead 320 and the resonance lead 330 can also extend to the inside of the main body 100 and have a certain included angle with the main radiation part 310 to save the space inside the main body 100.

[0062] In an embodiment, as shown in FIG. 4, Figure 3 The card reading device further includes a card reading head 400, which is arranged at the tail end of the card reading channel.

[0063] The card reading head 400 can be fixed at a position near the tail end of the card reading channel inside the main body 100, and is used to read the information of the card passing through the card reading channel.

[0064] It should be noted that the distance between the card reading head 400 and the radiation antenna 300 affects the radiation efficiency of the radiation signal of all frequency bands. The smaller the distance between the card reading head 400 and the radiation antenna 300, the lower the radiation efficiency of the radiation antenna 300. Therefore, the distance between the card reading head 400 and the radiation antenna 300 needs to be reasonably configured.

[0065] In an embodiment, a plurality of fixing protrusions are arranged on the first inner wall, and the fixing protrusions are used to embed into corresponding fixing holes 350 on the main radiation part 310 to fix the radiation antenna 300.

[0066] The one end of the principle main radiation part 310 of the feeding lead 320 and the resonant lead 330 can be connected with the pin of the corresponding circuit through the corresponding limiting hole and the contact spring 360.

[0067] In an embodiment, the signal intensity waveform of the low frequency band, the medium frequency band and the high frequency band of the application radiation antenna 300 is as shown in the figure. The signal intensity of the low frequency band, the medium frequency band and the high frequency band all meet the requirements. Figure 4

[0068] Those skilled in the art can clearly understand that, for the convenience and brevity of description, only the above-mentioned division of each functional unit and module is exemplified, and in actual application, the above-mentioned functions can be completed by different functional units and modules according to needs, that is, the internal structure of the device is divided into different functional units or modules to complete all or part of the functions described above. Each functional unit and module in the embodiment can be integrated in one processing unit, or each unit can exist physically, or two or more units can be integrated in one unit. The integrated unit can be realized in the form of hardware or in the form of software functional unit. In addition, the specific names of each functional unit and module are only for easy distinction, and do not limit the protection scope of the application. The specific working process of the unit and module in the system can refer to the corresponding process in the foregoing method embodiments, which will not be repeated here.

[0069] In the above embodiments, the description of each embodiment has its own emphasis, and the parts not described or recorded in a certain embodiment can be referred to the related description of other embodiments.

[0070] The foregoing embodiments have been described in detail for the present application, and those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the present application.​

Claims

1. A card reading device, characterized by comprising: The application relates to a card reader, which comprises: a main body; a card reading module arranged on the main body, the card reading module being provided with a card reading slot; a radiation antenna covering an inner wall of the card reading slot; the card reading slot comprises a first inner wall, a second inner wall and a third inner wall, which are used to form a card reading channel for a card to pass through, wherein the first inner wall is the bottom surface of the card reading slot, the second inner wall and the third inner wall are opposite side walls of the card reading slot, and the radiation antenna covers at least one of the first inner wall, the second inner wall and the third inner wall.

2. The card reading apparatus of claim 1, wherein The radiation antenna covers the first inner wall.

3. The card reading apparatus of claim 1, wherein The radiation antenna comprises a main radiation part, a feed lead, a resonance lead and a grounding part; the main radiation part extends from a first end of the main radiation part to a second end of the main radiation part along a direction parallel to the card reading channel, the main radiation part is provided with a feed point, a resonance point and a grounding point, the resonance point is located between the feed point and the second end of the main radiation part, and the grounding point is located between the resonance point and the second end of the main radiation part; the feed lead is used to connect the feed point and a feed circuit, the resonance lead is used to connect the resonance point and a resonance circuit, and the grounding part is connected with the grounding point and is coupled with a grounding metal layer.

4. The card reading apparatus of claim 3, wherein The main radiation part covers the first inner wall.

5. The card reading apparatus of claim 3, wherein The radiation antenna is used to emit a first radio frequency signal, the resonance frequency of the first radio frequency signal is inversely proportional to the distance between the feed point and the second end of the main radiation part.

6. The card reading apparatus of claim 5, wherein The radiation antenna is used to emit a second radio frequency signal, the resonance frequency of the second radio frequency signal is inversely proportional to the distance between the feed point and the grounding point; wherein the grounding point is a point in the contact position of the grounding part and the main radiation part, which is closest to the second end of the main radiation part; The resonance frequency of the second radio frequency signal is greater than the resonance frequency of the first radio frequency signal.

7. The card reading apparatus of claim 6, wherein The radiation antenna is used to emit a third radio frequency signal, the frequency of the third radio frequency signal is inversely proportional to the sum of the length of the feed lead, the length of the resonance lead and the distance between the feed point and the resonance point; The resonance frequency of the third radio frequency signal is greater than the resonance frequency of the second radio frequency signal.

8. The card reading apparatus according to any one of claims 1 to 7, wherein The card reader further comprises a card reading head arranged at the tail end of the card reading channel.

9. A card reading device as claimed in any one of claims 3 to 7, characterized in that The first inner wall is provided with a plurality of fixing protrusions, the fixing protrusions are used to be embedded in corresponding fixing holes on the main radiation part to fix the radiation antenna.

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