A POS machine anti-tampering circuit

Abstract

The utility model discloses a POS machine anti-disassembly circuit, including a three-layer FPC, a double-layer anti-tear FPC and a double-layer anti-tear silver paste circuit. The wiring points of the three-layer FPC are welded to the lower wiring points of the double-layer anti-tear FPC by soldering, and the wiring points of the double-layer anti-tear silver paste circuit are welded to the upper wiring points of the double-layer anti-tear FPC by ACF. Advantages: By using the double-layer anti-tear FPC and the double-layer anti-tear silver paste circuit, the anti-tear performance can be utilized while effectively reducing the thickness. When the POS cover is removed, the double-layer anti-tear FPC and the double-layer anti-tear silver paste circuit are not easily disassembled as a whole, thereby ensuring that the circuit is damaged during the removal process and triggering an alarm, so that the payment system of the POS machine is locked. While effectively reducing costs, the integrity of the product is improved and the assembly cost of the client is reduced.

Description

Technical Field

[0001] The utility model relates to the field of POS machine security protection, in particular to a POS machine anti-disassembly circuit. Background Art

[0002] POS payment security is the key to POS machines. Existing POS machines are protected by anti-tampering circuits. When the anti-tampering circuit is damaged, the POS payment system is locked. The anti-tampering circuit forms a power grid wall through a single layer of silver paste circuit, PCB printing plate and flexible flat cable. This design method increases the thickness of the entire POS machine, is costly and inconvenient to assemble.

[0003] In view of this, it is necessary to provide a POS machine anti-tampering circuit. Summary of the invention

[0004] The utility model provides a POS machine anti-tampering circuit, which effectively solves the problem that the existing POS machine anti-tampering circuit will increase the thickness of the POS machine, is costly and inconvenient to assemble.

[0005] The technical solution adopted by the utility model is

[0006] A POS machine anti-disassembly circuit comprises a three-layer FPC, a double-layer anti-tear FPC and a double-layer anti-tear silver paste circuit, wherein the connection points of the three-layer FPC are welded to the lower connection points of the double-layer anti-tear FPC by soldering, and the connection points of the double-layer anti-tear silver paste circuit are welded to the upper connection points of the double-layer anti-tear FPC by ACF.

[0007] Furthermore, the three-layer FPC includes a lower layer FPC, a middle layer FPC and an upper layer FPC, the upper connection point of the lower layer FPC is welded to the lower connection point of the middle layer FPC, and the lower connection point of the upper layer FPC is welded to the upper connection point of the middle layer FPC.

[0008] Furthermore, the double-layer anti-tear FPC includes a lower anti-tear FPC and an upper anti-tear FPC, the lower wiring point of the lower anti-tear FPC is welded to the upper wiring point of the upper FPC, and the upper wiring point of the lower anti-tear FPC is welded to the lower wiring point of the upper anti-tear FPC.

[0009] Furthermore, the double-layer anti-tear silver paste circuit includes a lower layer anti-tear silver paste circuit, a middle layer anti-tear silver paste circuit and an upper layer anti-tear silver paste circuit, the lower wiring point of the lower layer anti-tear silver paste circuit is welded to the upper wiring point of the upper layer anti-tear FPC, the lower wiring point of the middle layer anti-tear silver paste circuit is welded to the upper wiring point of the lower layer anti-tear silver paste circuit, and the upper wiring point of the middle layer anti-tear silver paste circuit is welded to the wiring point of the upper layer anti-tear silver paste circuit.

[0010] Furthermore, an adhesive layer is provided between the three-layer FPC and the double-layer anti-tear FPC, and between the double-layer anti-tear FPC and the double-layer anti-tear silver paste circuit.

[0011] Beneficial effects of the utility model: through the double-layer tear-proof FPC and the double-layer tear-proof silver paste circuit, the thickness can be effectively reduced while the tear-proof performance can be utilized. When the POS cover is removed, the double-layer tear-proof FPC and the double-layer tear-proof silver paste circuit are not easy to be disassembled as a whole, thereby ensuring that the circuit is damaged during the removal process and triggering an alarm, so that the payment system of the POS machine is locked. While effectively reducing costs, the integrity of the product is improved and the assembly cost of the client is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is an overall explosion diagram of the POS machine anti-tampering circuit provided in an embodiment of the present application.

[0013] The following are marked in the figure: 1. Three-layer FPC; 2. Double-layer tear-proof FPC; 3. Double-layer tear-proof silver paste circuit; DETAILED DESCRIPTION

[0014] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0015] like Figure 1 As shown, an anti-tear circuit for a POS machine provided in an embodiment of the present application has a structure including a three-layer FPC1, a double-layer anti-tear FPC2 and a double-layer anti-tear silver paste circuit 3. The connection points of the three-layer FPC1 are welded to the lower connection points of the double-layer anti-tear FPC2 by soldering, and the connection points of the double-layer anti-tear silver paste circuit 3 are welded to the upper connection points of the double-layer anti-tear FPC2 by ACF.

[0016] It should be noted that the three-layer FPC1, the double-layer anti-tear FPC2 and the double-layer anti-tear silver paste circuit 3 are all existing structures.

[0017] In actual use, the three-layer FPC1 is used to set the gold finger and solder it to the external PCB. The three-layer FPC1, the double-layer tear-proof FPC2 and the double-layer tear-proof silver paste line 3 form a loop, through which a power grid wall is formed, and an alarm signal is issued when the POS is removed.

[0018] In the above design, the double-layer tear-proof FPC2 and the double-layer tear-proof silver paste circuit 3 can effectively reduce the thickness while taking advantage of the tear-proof performance. When the POS cover is removed, the double-layer tear-proof FPC2 and the double-layer tear-proof silver paste circuit 3 are not easily disassembled as a whole, thereby ensuring that the circuit is damaged during the removal process and triggering an alarm, so that the payment system of the POS machine is locked. While effectively reducing costs, the integrity of the product is improved and the assembly cost of the client is reduced.

[0019] Specifically: the three-layer FPC1 includes a lower layer FPC, a middle layer FPC and an upper layer FPC, the upper connection point of the lower layer FPC is welded to the lower connection point of the middle layer FPC, and the lower connection point of the upper layer FPC is welded to the upper connection point of the middle layer FPC.

[0020] In the above design, the structural design of the three-layer FPC1 can effectively achieve conduction and effectively carry the double-layer anti-tear FPC2 and the double-layer anti-tear silver paste circuit 3.

[0021] Specifically: the double-layer anti-tear FPC2 includes a lower anti-tear FPC and an upper anti-tear FPC, the lower wiring point of the lower anti-tear FPC is welded to the upper wiring point of the upper FPC, and the upper wiring point of the lower anti-tear FPC is welded to the lower wiring point of the upper anti-tear FPC.

[0022] In the above design, the design of the double-layer anti-tear FPC2 can achieve stable connection between the three-layer FPC1 and the double-layer anti-tear silver paste circuit 3.

[0023] Specifically: the double-layer anti-tear silver paste circuit 3 includes a lower layer anti-tear silver paste circuit, a middle layer anti-tear silver paste circuit and an upper layer anti-tear silver paste circuit. The lower wiring point of the lower layer anti-tear silver paste circuit is welded to the upper wiring point of the upper layer anti-tear FPC, the lower wiring point of the middle layer anti-tear silver paste circuit is welded to the upper wiring point of the lower layer anti-tear silver paste circuit, and the upper wiring point of the middle layer anti-tear silver paste circuit is welded to the wiring point of the upper layer anti-tear silver paste circuit.

[0024] In the above design, the structural design of the double-layer tear-proof silver paste circuit 3 can utilize the unique wide coverage area characteristic of the silver paste circuit to maximize the protection effect.

[0025] Specifically, an adhesive layer is provided between the three-layer FPC1 and the double-layer anti-tear FPC2, and between the double-layer anti-tear FPC2 and the double-layer anti-tear silver paste circuit 3.

[0026] In the above design, the firmness of the three-layer FPC1 and the double-layer anti-tear FPC2, and the double-layer anti-tear FPC2 and the double-layer anti-tear silver paste circuit 3 can be enhanced by adhesive.

[0027] To further explain in detail, it should be understood that the above is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A POS machine anti-tamper circuit, characterized by: The invention comprises a three-layer FPC (1), a double-layer tear-proof FPC (2) and a double-layer tear-proof silver paste circuit (3), wherein the connection point of the three-layer FPC (1) is welded to the lower connection point of the double-layer tear-proof FPC (2) by soldering, and the connection point of the double-layer tear-proof silver paste circuit (3) is welded to the upper connection point of the double-layer tear-proof FPC (2) by ACF.

2. The POS machine anti-tampering circuit according to claim 1, characterized in that: The three-layer FPC (1) comprises a lower layer FPC, a middle layer FPC and an upper layer FPC, the upper connection point of the lower layer FPC is welded to the lower connection point of the middle layer FPC, and the lower connection point of the upper layer FPC is welded to the upper connection point of the middle layer FPC.

3. The POS machine anti-tampering circuit according to claim 1, characterized in that: The double-layer tear-proof FPC (2) comprises a lower tear-proof FPC and an upper tear-proof FPC, the lower connection point of the lower tear-proof FPC is welded to the upper connection point of the upper tear-proof FPC, and the upper connection point of the lower tear-proof FPC is welded to the lower connection point of the upper tear-proof FPC.

4. The POS machine anti-tampering circuit according to claim 1, characterized in that: The double-layer tear-proof silver paste circuit (3) comprises a lower tear-proof silver paste circuit, a middle tear-proof silver paste circuit and an upper tear-proof silver paste circuit, the lower connection point of the lower tear-proof silver paste circuit is welded to the upper connection point of the upper tear-proof FPC, the lower connection point of the middle tear-proof silver paste circuit is welded to the upper connection point of the lower tear-proof silver paste circuit, and the upper connection point of the middle tear-proof silver paste circuit is welded to the connection point of the upper tear-proof silver paste circuit.

5. The POS machine anti-tampering circuit according to claim 1, characterized in that: An adhesive layer is provided between the three-layer FPC (1) and the double-layer anti-tear FPC (2), and between the double-layer anti-tear FPC (2) and the double-layer anti-tear silver paste circuit (3).

Images