NFC card

Abstract

The utility model discloses an NFC (near field communication) card, which belongs to the field of NFC cards, and comprises a shielding cover shell, a shielding top shell is mounted at the top end of the shielding cover shell, a damping rotating shaft is mounted at the right end of the shielding cover shell, and the damping rotating shaft penetrates through the shielding cover shell and is connected with the shielding top shell; the shielding cover shell comprises a shell body, and an NFC chip is installed in the shell body. The shielding top shell comprises a sealing cover, the sealing cover is installed at the top end of the shell, the sealing cover is matched with the shell and the NFC chip, and the key point of the technical scheme is that the NFC chip is installed through the shell, and the sealing cover and the shell are matched to wrap the NFC chip, so that the NFC chip is isolated from the outside, and the phenomenon that the NFC chip is damaged in daily life is prevented. The NFC chip is in wrong contact with a reader to cause misreading of a card and wrong opening of the access control, and the damping rotating shaft is connected with the sealing cover and the shell, so that when the NFC chip needs to be used for opening the access control, the sealing cover can be conveniently unscrewed from the shell, and the NFC chip can be exposed to send a signal to open the access control.

Description

Technical Field

[0001] The utility model relates to the field of NFC cards, and more specifically, to an NFC card. Background Art

[0002] NFC card refers to a card with NFC (near field communication) chip function. NFC is a short-range high-frequency wireless communication technology. Its working principle is based on induction near field, which is very suitable for short-range communication, especially for security-related applications such as payment and access control. In the existing technology, when the NFC card is attached to the back cover of the mobile phone and other application scenarios with metal surface, it is impossible to read the card or the success rate of card reading is very low. This is because these metals will have a great impact on the wireless radio frequency. When the radio frequency wave passes through the metal surface, it will lose part of the frequency, resulting in the radio frequency receiving device being unable to read or reading insensitively.

[0003] Chinese patent application number: CN201922357659.3, provides an NFC card, which is arranged on the card body, including a COB packaged chip and a coil antenna. The card body includes an anti-metal shielding layer and an antenna substrate layer. The coil antenna is laid flat on the antenna substrate layer, the COB packaged chip is bonded and connected to the coil antenna, and the anti-metal shielding layer is bonded on the coil antenna. Since the material of the anti-metal shielding layer includes anti-metal shielding material, it is used to enhance the strength of the magnetic field received by the NFC card and increase the sensing distance of the NFC card, thereby improving the card reading success rate when the NFC card is bonded to the metal surface.

[0004] However, when the NFC access control is unlocked, it is only unlocked by a single NFC password, which is prone to misoperation and unlocking the access control, which is not conducive to improving the security of the access control. Therefore, an NFC card is proposed to address the above problem. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, the purpose of the utility model is to provide an NFC card, which wraps the NFC chip through a sealing cover and a shell, so that the NFC chip is isolated from the outside world, and prevents the NFC chip from accidentally contacting the reader in daily life, causing misreading of the card and erroneous opening of the access control. The damping shaft connects the sealing cover and the shell, so that when the NFC chip needs to be used to open the access control, the sealing cover can be unscrewed from the shell, which is beneficial for the NFC chip to be exposed and send a signal to open the access control.

[0006] The above technical objectives of the utility model are achieved through the following technical solutions:

[0007] An NFC card, comprising a shielding shell, a shielding top shell is installed on the top of the shielding shell, a damping shaft is installed on the right end of the shielding shell, and the damping shaft passes through the shielding shell and is connected to the shielding top shell; the shielding shell comprises a shell, and an NFC chip is installed inside the shell; the shielding top shell comprises a sealing cover, and the sealing cover is installed on the top of the shell, and the sealing cover is adapted to the shell and the NFC chip;

[0008] The NFC chip is installed through the shell, and the sealing cover and the shell cooperate to wrap the NFC chip, so that the NFC chip is isolated from the outside world to prevent the NFC chip from accidentally contacting the reader and misreading the card and opening the access control by mistake in daily life. The damping shaft connects the sealing cover and the shell, so that when the NFC chip needs to be used to open the access control, the sealing cover can be unscrewed from the shell, which is conducive to exposing the NFC chip to send a signal to open the access control.

[0009] Reference Figure 2 As shown, the shielding shell further includes a plurality of positioning blocks arranged at equal distances, a notch is provided at the front end of the shielding shell, the notch is matched with the positioning block, and the positioning block is matched with the NFC chip;

[0010] The position of the NFC chip is limited by the positioning block so that the NFC chip is installed in the shell. The notch facilitates the subsequent clamping of the NFC chip. The NFC chip is separated from the positioning block by applying force, and the positioning block can be replaced.

[0011] Reference Figure 3 , Figure 4 As shown, the shell includes an outer shell, the inner wall of the outer shell is provided with a plurality of slide grooves arranged at equal intervals, a lower magnetic block is installed at the top of the outer shell and on the left side of the notch, a connecting protrusion is fixedly connected to the rear end of the outer shell, a mounting groove is provided at the top of the connecting protrusion, and the mounting groove is connected to the damping shaft.

[0012] The positioning block comprises an arc-shaped block, a bottom end of the arc-shaped block is fixedly connected with a sliding block, and the sliding block is slidably connected with a sliding groove.

[0013] A spring is fixedly connected to the rear end of the arc block, and the spring is fixedly connected to the inside of the housing;

[0014] The spring facilitates soft support of the arc block, so that the arc block can adjust its position according to the size of the NFC chip. The force of the spring can enable the arc block to clamp the NFC chip and locate the position of the NFC chip.

[0015] Reference Figure 5As shown, the shielding top shell also includes an upper protrusion, which is installed at the rear end of the sealing cover, the upper protrusion is adapted to the outer shell, a through slot is provided at the top end of the upper protrusion, and the through slot is connected to the damping shaft, and an upper magnetic block is installed at the front end of the sealing cover, and the upper magnetic block and the lower magnetic block are arranged opposite to each other with different poles;

[0016] The upper and lower magnetic blocks are magnetically attracted to prevent the shielding effect of the sealing cover and the shell.

[0017] In summary, the utility model has the following beneficial effects:

[0018] (1) In this solution, the NFC chip is installed in the shell, and the sealing cover and the shell cooperate to wrap the NFC chip, so that the NFC chip is isolated from the outside world, preventing the NFC chip from accidentally contacting the reader in daily life, causing misreading of the card and erroneous opening of the access control. The damping shaft connects the sealing cover and the shell, so that when the NFC chip needs to be used to open the access control, the sealing cover can be unscrewed from the shell, which is conducive to exposing the NFC chip to send a signal to open the access control.

[0019] (2) This solution facilitates soft support of the arc block through the spring, so that the arc block can adjust its position according to the size of the NFC chip. The force of the spring can enable the arc block to clamp the NFC chip and locate the position of the NFC chip. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of the closed structure in this embodiment;

[0021] Figure 2 It is a schematic diagram of the structure opened in this embodiment;

[0022] Figure 3 It is a schematic diagram of the overall split structure in this embodiment;

[0023] Figure 4 is a schematic diagram of the structure of the enlarged positioning block in this embodiment;

[0024] Figure 5 It is a schematic diagram of the three-dimensional structure of the bottom of the shielding top shell in this embodiment.

[0025] In the figure, 1, shielding cover; 2, shielding top shell; 3, damping shaft; 101, shell; 102, positioning block; 103, NFC chip; 10101, shell; 10102, slide groove; 10103, lower magnetic block; 10104, connecting protrusion; 10105, mounting groove; 10201, arc block; 10202, spring; 10203, slider; 201, sealing cover; 202, upper protrusion; 203, through groove; 204, upper magnetic block. DETAILED DESCRIPTION

[0026] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0027] The same parts are denoted by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the drawings, and the words "bottom" and "top", "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0028] Reference Figure 1-Figure 3 , Figure 5 As shown, an NFC card in a preferred embodiment of the utility model includes a shielding shell 1, a shielding top shell 2 is installed on the top of the shielding shell 1, a damping shaft 3 is installed on the right end of the shielding shell 1, and the damping shaft 3 penetrates the shielding shell 1 and is connected to the shielding top shell 2; the shielding shell 1 includes a shell 101, and an NFC chip 103 is installed inside the shell 101; the shielding top shell 2 includes a sealing cover 201, and the sealing cover 201 is installed on the top of the shell 101, and the sealing cover 201 is adapted to the shell 101 and the NFC chip 103;

[0029] The NFC chip 103 is installed through the shell 101, and the sealing cover 201 cooperates with the shell 101 to wrap the NFC chip 103, so that the NFC chip 103 is isolated from the outside world, to prevent the NFC chip 103 from accidentally contacting the reader in daily life, causing misreading of the card and erroneous opening of the access control. The damping shaft 3 connects the sealing cover 201 and the shell 101, so that when the NFC chip 103 needs to be used to open the access control, the sealing cover 201 can be unscrewed from the shell 101, which is beneficial for the NFC chip 103 to be exposed to send a signal to open the access control.

[0030] Reference Figure 2 As shown, the shielding shell 1 further includes a plurality of positioning blocks 102 arranged at equal distances, a notch is provided at the front end of the shielding shell 1, the notch is matched with the positioning block 102, and the positioning block 102 is matched with the NFC chip 103;

[0031] The position of the NFC chip 103 is limited by the positioning block 102 so that the NFC chip 103 is installed in the housing 101. The notch facilitates the subsequent clamping of the NFC chip 103. The NFC chip 103 is separated from the positioning block 102 by applying force, and the positioning block 102 can be replaced.

[0032] Reference Figure 3 , Figure 4As shown, the shell 101 includes an outer shell 10101, the inner wall of the outer shell 10101 is provided with a plurality of slide grooves 10102 arranged at equal intervals, a lower magnetic block 10103 is installed at the top of the outer shell 10101 and on the left side of the notch, a connecting protrusion 10104 is fixedly connected to the rear end of the outer shell 10101, and an installation groove 10105 is provided at the top of the connecting protrusion 10104, and the installation groove 10105 is connected to the damping shaft 3.

[0033] The positioning block 102 includes an arc block 10201 , a bottom end of which is fixedly connected with a slider 10203 , and the slider 10203 is slidably connected with the slide groove 10102 .

[0034] The rear end of the arc block 10201 is fixedly connected with a spring 10202, and the spring 10202 is fixedly connected to the inside of the housing 10101;

[0035] The spring 10202 facilitates soft support of the arc block 10201, so that the arc block 10201 can adjust its position according to the size of the NFC chip 103. The force of the spring 10202 can enable the arc block 10201 to clamp the NFC chip 103 and locate the position of the NFC chip 103.

[0036] Reference Figure 5 As shown, the shielding top shell 2 also includes an upper protrusion 202, which is installed at the rear end of the sealing cover 201, and the upper protrusion 202 is adapted to the housing 10101. A through slot 203 is provided at the top of the upper protrusion 202, and the through slot 203 is connected to the damping shaft 3. An upper magnetic block 204 is installed at the front end of the sealing cover 201, and the upper magnetic block 204 and the lower magnetic block 10103 are arranged opposite to each other with different poles;

[0037] The upper magnetic block 204 and the lower magnetic block 10103 are magnetically attracted to each other to prevent the sealing cover 201 and the housing 10101 from being misaligned and affecting the shielding effect of the NFC chip 103 .

[0038] Specific implementation process: First, the NFC chip 103 is installed inside the housing 10101, and the spring 10202 is used to softly support the arc block 10201, so that the arc block 10201 can adjust the position according to the size of the NFC chip 103, and the force of the spring 10202 can make the arc block 10201 clamp the NFC chip 103 to locate the position of the NFC chip 103, and then the sealing cover 201 is rotated back to the top of the housing 10101 through the damping shaft 3, and at the same time, the upper magnetic block 204 and the lower magnetic block 10103 are magnetically attracted to prevent the sealing cover 201 from being detached from the housing 10101. The shell 10101 is misaligned, which affects the shielding effect of the NFC chip 103. The sealing cover 201 cooperates with the shell 101 to wrap the NFC chip 103, so that the NFC chip 103 is isolated from the outside world, to prevent the NFC chip 103 from accidentally contacting the reader and causing misreading of the card and mistakenly opening the access control in daily life. The damping shaft 3 connects the sealing cover 201 and the shell 101, so that when the NFC chip 103 needs to be used to open the access control, the sealing cover 201 can be unscrewed from the shell 101, which is beneficial for the NFC chip 103 to be exposed to send signals to open the access control. It can be operated with one hand and is easy to use.

[0039] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. An NFC card, comprising a shielding housing (1), characterized in that: A shielding top shell (2) is installed at the top end of the shielding shell (1), a damping shaft (3) is installed at the right end of the shielding shell (1), and the damping shaft (3) passes through the shielding shell (1) and is connected to the shielding top shell (2); The shielding case (1) comprises a housing (101), an NFC chip (103) being installed inside the housing (101); The shielding top shell (2) comprises a sealing cover (201), wherein the sealing cover (201) is installed on the top end of the housing (101), and the sealing cover (201) is compatible with the housing (101) and the NFC chip (103).

2. The NFC card according to claim 1, characterized in that: The shielding shell (1) further comprises a plurality of positioning blocks (102) arranged at equal intervals, a notch is provided at the front end of the shielding shell (1), the notch is matched with the positioning block (102), and the positioning block (102) is matched with the NFC chip (103).

3. The NFC card according to claim 1, characterized in that: The housing (101) comprises an outer shell (10101), the inner wall of the outer shell (10101) is provided with a plurality of slide grooves (10102) arranged at equal intervals, a lower magnetic block (10103) is installed at the top of the outer shell (10101) and on the left side of the notch, a connecting protrusion (10104) is fixedly connected to the rear end of the outer shell (10101), a mounting groove (10105) is provided at the top of the connecting protrusion (10104), and the mounting groove (10105) is connected to the damping shaft (3).

4. The NFC card according to claim 2, characterized in that: The positioning block (102) comprises an arc-shaped block (10201), the bottom end of the arc-shaped block (10201) is fixedly connected with a sliding block (10203), and the sliding block (10203) is slidably connected to the sliding groove (10102).

5. The NFC card according to claim 4, characterized in that: The rear end of the arc block (10201) is fixedly connected to a spring (10202), and the spring (10202) is fixedly connected to the inside of the housing (10101).

6. The NFC card according to claim 1, characterized in that: The shielding top shell (2) also includes an upper protrusion (202), which is installed at the rear end of the sealing cover (201), and the upper protrusion (202) is adapted to the outer shell (10101). A through groove (203) is provided at the top end of the upper protrusion (202), and the through groove (203) is connected to the damping shaft (3). An upper magnetic block (204) is installed at the front end of the sealing cover (201), and the upper magnetic block (204) and the lower magnetic block (10103) are arranged opposite to each other with opposite poles.

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