Control assembly and financial transaction device

Abstract

The embodiment of the application provides a control assembly and a financial transaction device, the control assembly comprises an electrical connector, a control mainboard and a flexible circuit board, the electrical connector and the control mainboard are arranged in a stack, the flexible circuit board comprises a first connecting part and a second connecting part connected with each other, the first connecting part is electrically connected with the electrical connector, and a first electrical connector electrically connected with the control mainboard is connected with the first connecting part, the second connecting part is bent to one side of the first connecting part facing the control mainboard, and a second electrical connector electrically connected with the control mainboard is arranged on the second connecting part, the first connecting part covers the second connecting part, a protection line on the first connecting part and sensitive information wires electrically connected with the second electrical connector are arranged on the flexible circuit board, and the protection line is connected into an anti-tampering loop on the control mainboard through the first electrical connector. When an external part tries to break through the physical shielding and contacts the second electrical connector pin in a manner of piercing or disconnecting the first connecting part, the protection line is broken synchronously, and then the anti-tampering loop is started.

Description

Technical Field

[0001] This application belongs to the field of financial trading equipment technology, and particularly relates to a control component and financial trading equipment. Background Technology

[0002] With the rapid development of the digital economy, intelligent financial transaction devices such as ATMs, self-service terminals, and mobile POS machines have widely penetrated various fields such as commercial payments, banking services, and retail consumption, becoming key carriers for fund transfers and transaction settlements in socio-economic activities. While enabling convenient transactions, these devices need to process a large amount of core sensitive information involving cardholder account numbers, transaction passwords, and identity verification data. The security of this information is directly related to the safety of users' assets and the stable operation of the financial system. Therefore, end-to-end protection of sensitive information has become one of the core requirements for the design of intelligent financial transaction devices.

[0003] In the hardware architecture of intelligent financial transaction devices, devices involved in the storage, transmission, and processing of sensitive information are defined as sensitive components, and the signal paths that transmit sensitive information are called sensitive signals. Among them, the display screen, as the core interactive interface for cardholders to input sensitive information (such as passwords and account numbers), is a typical sensitive component; and the signal wiring between the display screen and the device processor used to transmit sensitive information, including the display screen's internal wiring and external connection lines, are all sensitive signals that require special protection.

[0004] Currently, the connection between the display screen and the control motherboard containing the processor in intelligent financial trading devices is commonly achieved using flexible printed circuit boards (FPCs). One end of the FPC interfaces with the display screen, while the other end connects to an interface on the control motherboard via a connector. Sensitive signals are transmitted between the display screen and the processor on the control motherboard through sensitive information traces on the FPC. However, this connection method allows malicious attackers to easily intercept sensitive information transmitted on the FPC traces by illegally inserting probes, miniature data acquisition modules, or other tools at the interface between the FPC and the control motherboard. This can lead to serious security incidents such as the leakage of user account information and the tampering of transaction data. Utility Model Content

[0005] The purpose of this application is to provide a control component and financial trading device, which aims to solve the technical problem that sensitive data can be illegally obtained from the interface between the flexible circuit board and the control motherboard in current financial trading devices.

[0006] This application is implemented as follows: Firstly, a control component is provided, including an electrical connector, a control motherboard, and a flexible circuit board. The electrical connector and the control motherboard are stacked together. The flexible circuit board includes a first connecting portion and a second connecting portion connected together. The first connecting portion is electrically connected to the electrical connector and is connected to a first electrical connector electrically connected to the control motherboard. The second connecting portion is bent to the side of the first connecting portion facing the control motherboard. A second electrical connector electrically connected to the control motherboard is provided on the second connecting portion. The orthographic projection of the first connecting portion on the control motherboard covers the orthographic projection of the second connecting portion on the control motherboard. The flexible circuit board is provided with a protection line located on the first connecting portion and a sensitive information trace electrically connected to the second electrical connector. The protection line is connected to an anti-tampering circuit on the control motherboard through the first electrical connector.

[0007] In one embodiment of the first aspect, the control assembly further includes a support plate located between the electrical connector and the control motherboard, the first connection portion passing around the support plate and the control motherboard from the side of the support plate facing away from the control motherboard, and the first electrical connector located on the side of the control motherboard facing away from the support plate.

[0008] In one embodiment of the first aspect, the second connection portion passes around the support plate and the control motherboard from the side of the support plate facing away from the control motherboard, and the second electrical connector is located on the side of the control motherboard facing away from the support plate.

[0009] In one embodiment of the first aspect, the flexible circuit board further includes a third connecting portion, which is connected to the first connecting portion and is bent, a second connecting portion is connected to the third connecting portion, the first connecting portion and the second connecting portion extend along the same straight line, the first electrical connector is disposed at the extended end of the first connecting portion, the second electrical connector is connected to the extended end of the second connecting portion, and the second electrical connector and the first electrical connector are arranged sequentially in the extending direction of the first connecting portion.

[0010] In one embodiment of the first aspect, the support plate is provided with a first clearance hole, and both the first connecting part and the second connecting part pass through the first clearance hole.

[0011] In one embodiment of the first aspect, the flexible circuit board further includes a fourth connection portion and a fifth connection portion, both connected to the first connection portion. The extension direction of the fourth connection portion is opposite to that of the fifth connection portion and is perpendicular to the extension direction of the first connection portion. The extension end of the fifth connection portion is connected to the electrical connector, and the extension end of the fourth connection portion is detachably connected to the support plate.

[0012] In one embodiment of the first aspect, a limiting post is provided on the side of the support plate away from the electrical connector, and the fourth connecting portion is hooked around the support plate and attached to the limiting post.

[0013] In one embodiment of the first aspect, the support plate is provided with a second clearance hole, and the fourth connecting part passes through the second clearance hole.

[0014] In one embodiment of the first aspect, the fourth connecting portion has a limiting hole, and the protection line is arranged around at least a portion of the limiting hole.

[0015] In a second aspect, a financial trading device is provided, including a device body and a control component as described in any of the above embodiments, wherein the control component is connected to the device body.

[0016] The technical advantages of this application compared to existing technologies are as follows: The control component utilizes the first connecting portion to form a physical shield, spatially blocking the path for direct external contact with the second electrical connector. The sensitive information wiring connected to the second electrical connector is hidden between the first connecting portion and the control motherboard, effectively reducing the risk of unauthorized access and interception of sensitive information. Furthermore, the protection circuit on the first connecting portion is connected to the anti-tampering circuit of the control motherboard through the first electrical connector. When an external entity attempts to break through the physical shield and contact the pins of the second electrical connector by piercing or disconnecting the first connecting portion, the protection circuit will break simultaneously, thereby instantly triggering the anti-tampering circuit. In this way, the control component forms a dual security mechanism of physical protection and active warning, significantly improving the security of sensitive information transmission within the control component. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments of this application or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a three-dimensional structural diagram of the financial transaction device provided in the embodiments of this application; Figure 2 yes Figure 1 A partial exploded view of the financial trading equipment in the image; Figure 3 yes Figure 1 A partially exploded view of the financial trading equipment in the image from another perspective; Figure 4 This is a structural diagram of the unfolded state of the flexible circuit board in the financial trading device provided in the embodiments of this application; Figure 5 This is a structural diagram of the folded state of the flexible circuit board in the financial trading device provided in this application embodiment; Figure 6 yes Figure 5 A structural diagram of the flexible circuit board from another perspective; Figure 7 yes Figure 3 A magnified view of a portion of region A in the middle.

[0019] Explanation of reference numerals in the attached figures: 10. Electrical connector; 10a. Display module; 20. Control motherboard; 21. First main control connector; 22. Second main control connector; 30. Flexible circuit board; 31. First connecting part; 311. First electrical connector; 32. Second connecting part; 321. Second electrical connector; 33. Third connecting part; 34. Fourth connecting part; 341. Limiting hole; 35. Fifth connecting part; 40. Support plate; 41. Limiting post; 401. First clearance hole; 402. Second clearance hole; 90. Equipment body. Detailed Implementation

[0020] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. In the description of this application, it should be understood that the terms "length", "width", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified. In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0021] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments.

[0022] This application provides a financial transaction device, which includes, but is not limited to, POS machines, bank card automatic teller machines (ATMs), barcode payment acceptance terminals, and smart cash registers.

[0023] Please see Figure 1 The financial trading equipment includes a main body 90 and a control component 100, with the control component connected to the main body 90. Please refer to... Figure 2 and Figure 3 The control components include electrical connectors 10, a control motherboard 20, and a flexible circuit board 30. The electrical connectors 10 include, but are not limited to, a display module 10a, a touch module, a keyboard, and a joystick. The control motherboard 20 is a printed circuit board (PCB). The flexible circuit board 30 is electrically connected to both the electrical connectors 10 and the control motherboard 20. The flexible circuit board 30 is used to transmit drive signals from the control motherboard 20 to the electrical connectors 10, as well as signals fed back from the electrical connectors 10 to the control motherboard 20, ensuring the coordinated operation of all components.

[0024] In the following embodiments, a POS machine is used as an example of a financial transaction device for illustration.

[0025] Please see Figure 2 and Figure 3 The electrical connector 10 includes a display module 10a, which is connected to the device body 90 and together with the device body 90 forms a mounting cavity. The control motherboard 20 is installed inside the mounting cavity, and the flexible circuit board 30 is electrically connected to the control motherboard 20 and the display module 10a. The flexible circuit board 30 is used to transmit display signals from the display module 10a to the control motherboard 20, and to receive display data (such as transaction amount numbers and payment method icons) such as transaction information and operation instructions sent by the control motherboard 20. It also converts the data into drive signals to control the display module 10a to light up the corresponding content.

[0026] Please combine Figure 4 and Figure 5The display module 10a and the control motherboard 20 are stacked. The flexible circuit board 30 includes a first connecting portion 31 and a second connecting portion 32 connected together. The first connecting portion 31 is electrically connected to the display module 10a and is connected to a first electrical connector 311. The first electrical connector 311 can be electrically connected to the control motherboard 20. The electrical connection method includes, but is not limited to, plugging, elastic contact, and soldering. The second connecting portion 32 is bent to the side of the first connecting portion 31 facing the control motherboard 20, that is, the second connecting portion 32 is located between the first connecting portion 31 and the control motherboard 20. The second connecting portion 32 is provided with a second electrical connector 321. The second electrical connector 321 can be electrically connected to the control motherboard 20. The electrical connection method includes, but is not limited to, plugging, elastic contact, and soldering. The orthographic projection of the first connecting portion 31 on the control motherboard 20 covers the orthographic projection of the second connecting portion 32 on the control motherboard 20. At this time, the second electrical connector 321 is also covered by the first connecting portion 31.

[0027] exist Figure 3 and Figure 5 In the embodiment shown, the control motherboard 20 is provided with a first main control connector 21 and a second main control connector 22. The first electrical connector 311 is plugged into the first main control connector 21, and the second electrical connector 321 is plugged into the second main control connector 22.

[0028] It should be noted that the first connecting part 31 may be entirely located between the control motherboard 20 and the display module 10a, or it may be entirely located on the side of the control motherboard 20 facing away from the display module 10a, or it may be partially located between the control motherboard 20 and the display module 10a, and partially located on the side of the control motherboard 20 facing away from the display module 10a; there is no limitation here. The second connecting part 32 may be entirely located between the control motherboard 20 and the display module 10a, or it may be entirely located on the side of the control motherboard 20 facing away from the display module 10a, or it may be partially located between the control motherboard 20 and the display module 10a, and partially located on the side of the control motherboard 20 facing away from the display module 10a; there is no limitation here.

[0029] The flexible circuit board 30 is equipped with protection lines and sensitive information traces. The protection lines are located on the first connection part 31 and are electrically connected to the first electrical connector 311. The sensitive information traces are electrically connected to the second electrical connector 321. The control main board 20 is equipped with a tamper circuit / loop. The protection lines are connected to the tamper circuit / loop on the control main board 20 through the first electrical connector 311. The tamper circuit / loop is electrically connected to the first main control connector 21.

[0030] Specifically, the anti-tampering circuit may include a series-connected detection element, detection circuitry, power module, and auxiliary components. The detection element may include a security chip (such as an SE chip) and resistors. The security chip is the core of the circuit, responsible for monitoring level changes and triggering security mechanisms. The resistor, connected in series in the circuit, limits current and stabilizes the level, preventing damage to components due to excessive current. The detection circuitry can be copper traces on the control motherboard 20, connecting the various components in the anti-tampering circuit. Auxiliary components may include, but are not limited to, capacitors and diodes. Capacitors can be used for filtering and stabilizing voltage, reducing power supply noise interference, while diodes prevent reverse current flow and protect circuit components.

[0031] The protection circuit on the flexible circuit board 30 can be electrically connected to the input pin of the anti-tampering circuit via the first electrical connector 311, thereby connecting the anti-tampering circuit and forming a closed circuit. In the normal assembly state of the financial trading equipment, the security chip detects that the input pin level is a normal preset value (e.g., low level 0V), determines that the equipment is safe, does not trigger the security mechanism, and the equipment operates normally. When an external entity attempts to break through the physical barrier and contact the pin of the second electrical connector 321 by piercing or disconnecting the first connection part 31, the protection circuit will break simultaneously, the anti-tampering circuit will disconnect, and the anti-tampering circuit will be immediately triggered. If the security chip detects an abnormal level (e.g., low level changing to high level 3.3V), the security chip will trigger the security mechanism and send instructions to other control units of the equipment to execute a series of protection actions. This series of protective actions includes, but is not limited to: sending a command to the storage module to immediately erase sensitive data stored in the device, such as bank card account information and transaction passwords; or sending a command to the communication module to cut off the device's connection with the external network and prevent criminals from stealing data through the network; or sending a signal to the display module to display a warning message on the device screen to inform the user that the device is in an abnormal state.

[0032] The control component utilizes the first connecting part 31 to form a physical shield, spatially blocking the path for direct external contact with the second electrical connector 321. The sensitive information wiring connected to the second electrical connector 321 is hidden between the first connecting part 31 and the control motherboard 20, effectively reducing the risk of unauthorized access and interception of sensitive information. Furthermore, the protection circuit on the first connecting part 31 is connected to the anti-tampering circuit of the control motherboard 20 via the first electrical connector 311. When an external entity attempts to break through the physical shield and contact the pins of the second electrical connector 321 by piercing or disconnecting the first connecting part 31, the protection circuit will break simultaneously, instantly triggering the anti-tampering circuit. Thus, the control component forms a dual security mechanism of physical protection and active warning, significantly improving the security of sensitive information transmission within the control component.

[0033] Optionally, a protection line can also be provided on the second connection part 32. This protection line on the second connection part 32 can be electrically connected to the second electrical connector 321. After the second electrical connector 321 is electrically connected to the control circuit board, the protection line on the second connection part 32 can be connected to the anti-tampering circuit of the control motherboard 20 through the second electrical connector 321. In this way, the protection line in the second connection part 32 and the protection line of the first connection part 31 form a "double protection network". When an external force attempts to pierce or tear the second connection part 32 to access sensitive information traces, the protection line of the second connection part 32 will break simultaneously, triggering the anti-tampering mechanism. Compared with a single protection line, this significantly improves the response sensitivity and coverage to malicious damage. In addition, the second connection part 32 itself is hidden between the first connection part 31 and the control motherboard 20. The addition of its protection line can form dedicated protection for this sensitive area, avoiding security vulnerabilities due to the protection line of the first connection part 31 not covering the second connection part 32.

[0034] In some embodiments, please refer to Figure 2 and Figure 3The control assembly also includes a support plate 40, which can be a mid-frame. The material of the support plate 40 can be metal (such as aluminum alloy, stainless steel, etc.) or engineering plastic (such as polycarbonate, fiberglass, etc.). The support plate 40 is located between the display module 10a and the control motherboard 20. The first connecting part 31 extends from the side of the support plate 40 away from the control motherboard 20, bypassing both the support plate 40 and the control motherboard 20. The first electrical connector 311 is located on the side of the control motherboard 20 away from the support plate 40. That is, part of the first connecting part 31 is located between the support plate 40 and the display module 10a, and the other part is located on the side of the control motherboard 20 away from the support plate 40. The end of the first connecting part 31 located between the support plate 40 and the display module 10a is connected to the display module 10a, and the end of the control motherboard 20 located on the side away from the support plate 40 is fixed by the first electrical connector 311. The support plate 40 provides a stable intermediate support for the display module 10a and the control motherboard 20, avoiding squeezing damage or signal interference caused by direct contact between the two components. It also serves as a support for the first connecting part 31, allowing it to smoothly bypass the support plate 40 and the control motherboard 20 from the side of the support plate 40 facing away from the control motherboard 20, and finally extend to the side of the control motherboard 20 facing away from the support plate 40 and be fixed by the first electrical connector 311. This wiring design not only makes full use of the three-dimensional space of the control components and avoids the first connecting part 31 from being excessively bent in the stacking gap between the display module 10a and the control motherboard 20, which would affect the stability of signal transmission or shorten its service life, but also hides the first electrical connector 311 on the non-stacked side of the control motherboard 20, reducing the risk of direct contact between the connector and the outside. Secondly, the first electrical connector 311 is located on the side of the control motherboard 20 facing away from the support plate 40. This location is unobstructed by other components, providing ample operating space and significantly facilitating the insertion and removal of the first electrical connector 311 during assembly. This improves the assembly efficiency of the control components and also facilitates connector insertion and removal during subsequent maintenance. Simultaneously, the winding layout of the first connecting part 31 makes the connection between the display module 10a, the support plate 40, and the control motherboard 20 tighter. While ensuring the stable assembly of each component, it further reduces the overall thickness of the control components, meeting the compact design requirements of financial trading equipment without affecting the signal interaction efficiency between the display module 10a and the control motherboard 20. This balances structural rationality, space utilization, and operational reliability.

[0035] In some embodiments, please refer to Figure 2 and Figure 3The second connecting portion 32 extends from the support plate 40 away from the control main board 20, bypassing both the support plate 40 and the control main board 20. The second electrical connector 321 is located on the control main board 20 away from the support plate 40. In other words, part of the second connecting portion 32 is located between the support plate 40 and the display module 10a, while the other part is located on the control main board 20 away from the support plate 40. One end of the second connecting portion 32 located between the support plate 40 and the display module 10a is connected to the display module 10a, and the other end located on the control main board 20 away from the support plate 40 is fixed by the second electrical connector 321. The support plate 40 is located between the display module 10a and the control motherboard 20. It provides stable intermediate support for the two core components, preventing damage from direct contact and signal interference. It also provides a support for the second connection part 32, allowing it to smoothly bypass the support plate 40 and control motherboard 20 from the connection point between the support plate 40 and the display module 10a, ultimately extending to the side of the control motherboard 20 facing away from the support plate 40 and securing it with the second electrical connector 321. This three-dimensional wiring design fully utilizes the non-stacked space of the control components, preventing excessive bending of the second connection part 32 within the gap between the display module 10a and the control motherboard 20, effectively reducing the risk of line breakage, ensuring the transmission stability of sensitive information lines, and extending the service life of the flexible circuit board 30. Furthermore, the second electrical connector 321 is located on the side of the control motherboard 20 facing away from the support plate 40. This location is unobstructed by other components, providing ample operating space and greatly facilitating the insertion and removal of the second electrical connector 321 during assembly. This improves the assembly efficiency of the control components and also facilitates connector insertion and removal during subsequent maintenance. Furthermore, the second connecting portion 32 is partially located between the support plate 40 and the display module 10a, extending to the non-stacked side of the control motherboard 20. This arrangement makes the connection between the display module 10a, the support plate 40, the control motherboard 20, and the flexible circuit board 30 tighter. While ensuring the stable assembly of each component, it further reduces the overall thickness of the control assembly, adapting to the compact design requirements of financial trading equipment. Simultaneously, the second electrical connector 321 is hidden on the non-stacked side of the control motherboard 20, reducing the risk of direct external contact with the connector. It should be noted that the first connecting portion 31 can still obstruct the second connecting portion 32 during its routing path.

[0036] In some embodiments, please refer to Figure 4 and Figure 5The flexible circuit board 30 also includes a third connecting portion 33, which is connected to the first connecting portion 31 and is bent. A second connecting portion 32 is connected to the third connecting portion 33. The first connecting portion 31 and the second connecting portion 32 extend along the same straight line, that is, both the first connecting portion 31 and the second connecting portion 32 are elongated strips extending in a straight line. A first electrical connector 311 is disposed at the extension end of the first connecting portion 31 (i.e., one of the two extension ends). A second electrical connector 321 is connected to the extension end of the second connecting portion 32 (i.e., the end away from the first connecting portion 31). The third connecting portion 33 can be connected to the other extension end of the second connecting portion 32 and connected to the other extension end or the middle of the first connecting portion 31. The second electrical connector 321 and the first electrical connector 311 are arranged sequentially in the extension direction of the first connecting portion 31, that is, the second electrical connector 321 is located inside the first electrical connector 311. The first connecting portion 31 and the second connecting portion 32 of the flexible circuit board 30 adopt a long strip design extending in the same straight line. They are connected by a curved third connecting portion 33, which not only ensures the regularity of the circuit layout, but also allows the bending characteristics of the third connecting portion 33 to flexibly adapt to the internal spatial structure of the control component, avoiding assembly interference caused by messy circuits. At the same time, the second electrical connector 321 and the first electrical connector 311 are arranged sequentially in the extension direction of the first connecting portion 31, with the second electrical connector 321 located on the inside. This allows the first electrical connector 311 to form a natural physical barrier for the second electrical connector 321 in the extension direction, effectively preventing direct contact or malicious access to the second electrical connector 321 from the outside. The sensitive information traces connected to the second electrical connector 321 are thus given more reliable protection. Furthermore, the straight-line extending first connecting part 31 and second connecting part 32 facilitate the precise placement of the first electrical connector 311 and the second electrical connector 321, adapting to the docking requirements of the control motherboard 20. The curved third connecting part 33 can buffer the pulling force of the circuit during assembly, reducing the risk of circuit damage. The overall structure not only strengthens the protection of key components for sensitive information transmission, but also takes into account the assembly flexibility and reliability of the flexible circuit board 30, adapting to the high requirements of financial trading equipment for the safety and stability of control components.

[0037] In some embodiments, please refer to Figure 3 and Figure 6The support plate 40 has a first clearance hole 401, through which both the first connecting part 31 and the second connecting part 32 pass. The first clearance hole 401 can be circumferentially closed or form a notch; there is no limitation here. The first clearance hole 401 provides a precise routing channel for the first and second connecting parts 32 of the flexible circuit board 30, and can limit the width of the first connecting part 31 and the second connecting part 32, preventing them from idly shaking or shifting inside the control component. This effectively solves the assembly interference problem caused by messy wiring, making the overall wiring more orderly and facilitating the identification and inspection of the wiring during subsequent maintenance. Meanwhile, the position of the first clearance hole 401 can be flexibly set according to the shape and position of the control motherboard 20 to achieve coordinated adaptation with the flexible circuit board 30. There is no need to extend the length of the support plate 40 or change its overall structure to avoid occupying the installation space around the support plate 40. This helps the control components maintain a compact size, adapt to the stringent requirements of financial trading equipment for internal space, and the neat wiring can also indirectly reduce accidental contact with the first connection part 31 from the outside, further strengthening the protection of sensitive information wiring, and taking into account both structural rationality and usage safety.

[0038] In some embodiments, please refer to Figure 3 and Figure 4 The flexible circuit board 30 also includes a fourth connecting portion 34 and a fifth connecting portion 35, both connected to the first connecting portion 31. The extension direction of the fourth connecting portion 34 is opposite to that of the fifth connecting portion 35 and is perpendicular to the extension direction of the first connecting portion 31. The extension end of the fifth connecting portion 35 (i.e., the end away from the first connecting portion 31) is connected to the display module 10a, and the extension end of the fourth connecting portion 34 (i.e., the end away from the first connecting portion 31) is detachably connected to the support plate 40. In this way, the flexible circuit board 30 forms a cross or T-shape through the first connecting portion 31, the fourth connecting portion 34, and the fifth connecting portion 35, thereby providing stable constraints on the flexible circuit board 30 from three successively perpendicular directions. This effectively suppresses line displacement and shaking caused by equipment vibration, external force contact, or temperature changes, and avoids problems such as poor electrical connection contact and signal transmission interruption caused by loosening of the flexible circuit board 30, greatly improving the stability and anti-interference capability of the overall structure. Meanwhile, the detachable connection between the extended end of the fourth connecting part 34 and the support plate 40 can tightly adhere the flexible circuit board 30 to the surface of the support plate 40 in the circumferential direction, forming a complete covering fixation. This physically prevents the edge of the flexible circuit board 30 from being accidentally lifted or maliciously pried open, thereby avoiding the exposure of the second connecting part 32 and sensitive information wiring underneath, and blocking the potential path for external illegal contact with sensitive signals.

[0039] Optional, please refer to Figure 3 and Figure 7A limiting post 41 is provided on the side of the support plate 40 away from the display module 10a. The fourth connecting part 34 bypasses the support plate 40 and hooks onto the limiting post 41. The limiting post 41 provides a precise hook fulcrum for the fourth connecting part 34, allowing the fourth connecting part 34 to form a stable tension by wrapping around the support plate 40, tightly adhering the flexible circuit board 30 to the surface of the support plate 40. This not only strengthens the fixing effect of the flexible circuit board 30 in three directions and effectively suppresses the loosening of the circuit caused by equipment vibration or external force, but also further constrains the circumferential position of the flexible circuit board 30 through this hook structure, preventing its edges from lifting. At the same time, the path design of the fourth connecting part 34 around the support plate 40 makes the fit between the flexible circuit board 30 and the support plate 40 tighter. Combined with the physical blocking of the limiting post 41, it can effectively prevent the risk of exposing the second connecting part 32 and sensitive information wiring by prying the edge of the flexible circuit board 30, thus strengthening the physical protection of sensitive components. In addition, the limiting post 41 has a simple structure and is easy to process. The hook method can achieve reliable fixation without complicated connecting parts, which not only reduces the assembly difficulty and improves production efficiency, but also provides convenience for disassembly and adjustment during subsequent maintenance.

[0040] Optional, please refer to Figure 3 and Figure 7 The support plate 40 has a second clearance hole 402, through which the fourth connecting part 34 passes. The second clearance hole 402 provides a precise passage for the fourth connecting part 34, effectively limiting its width and ensuring its stable position when assembled with the support plate 40. This prevents the connecting part from shifting or loosening due to equipment vibration or external force, further strengthening the fixing effect of the flexible circuit board 30 in three directions. Simultaneously, the second clearance hole 402 can be flexibly set according to the position and requirements of the flexible circuit board 30, adapting to its installation and making the fit between the flexible circuit board 30 and the support plate 40 more secure. Combined with the physical constraint of the hole wall, it effectively prevents the edges of the flexible circuit board 30 from being accidentally lifted or maliciously pried, thus preventing the second connecting part 32 and sensitive information wiring from being exposed, strengthening the physical protection of sensitive components.

[0041] Optional, please refer to Figure 3 and Figure 7The fourth connecting part 34 has a limiting hole 341, and the protective circuit is arranged around at least part of the limiting hole 341. The limiting hole 341 can work with the limiting post 41 to achieve precise positioning of the fourth connecting part 34, further enhancing the fixed stability of the flexible circuit board 30 and the support plate 40, and avoiding circuit displacement caused by equipment vibration or slight external force. In addition, when an external party attempts to damage the structure by pulling the flexible circuit board 30 or other malicious means to access the second connecting part 32 and sensitive information wiring, the fourth connecting part 34 is prone to tearing at the weak point of the limiting hole 341. The protective circuit surrounding the limiting hole 341 will break simultaneously with the tear. Since the protective circuit is connected to the anti-tampering circuit of the control motherboard 20, the breakage of the protective circuit will immediately trigger the anti-tampering mechanism, thereby blocking the risk of sensitive information leakage from the source.

[0042] Furthermore, a cut extending through to the limiting hole 341 is provided on the fourth connecting part 34 to shorten the path of tearing the fourth connecting part 34, thereby further improving the protection sensitivity.

[0043] In other embodiments, the fourth connecting part 34 may also be provided with a hook structure, and hooked onto the limiting post 41 through the hook structure; this is not a limitation.

[0044] It should be noted that the electrical connector 10 can also be a card swiping module, barcode scanning module, printing module, status indicator module, power management module, security encryption module, button module, or buzzer module within a financial transaction device. Of course, this control component can also be applied to non-financial transaction devices; there are no limitations on its use here.

[0045] The above are merely preferred embodiments of this application, and only specifically describe the technical principles of this application. These descriptions are only for explaining the principles of this application and should not be construed as limiting the scope of protection of this application in any way. Based on this explanation, any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application, as well as other specific embodiments of this application that can be conceived by those skilled in the art without creative effort, should be included within the scope of protection of this application.

Claims

1. A control component, characterized in that, The device includes an electrical connector, a control motherboard, and a flexible circuit board. The electrical connector and the control motherboard are stacked together. The flexible circuit board includes a first connecting portion and a second connecting portion connected together. The first connecting portion is electrically connected to the electrical connector and is connected to a first electrical connector electrically connected to the control motherboard. The second connecting portion is bent to the side of the first connecting portion facing the control motherboard. The second connecting portion is provided with a second electrical connector electrically connected to the control motherboard. The orthographic projection of the first connecting portion on the control motherboard covers the orthographic projection of the second connecting portion on the control motherboard. The flexible circuit board is provided with a protection line located on the first connecting portion and a sensitive information trace electrically connected to the second electrical connector. The protection line is connected to the anti-tampering circuit on the control motherboard through the first electrical connector.

2. The control component as described in claim 1, characterized in that, The control assembly further includes a support plate located between the electrical connector and the control motherboard. The first connection portion extends from the side of the support plate away from the control motherboard, bypassing the support plate and the control motherboard. The first electrical connector is located on the side of the control motherboard away from the support plate.

3. The control component as described in claim 2, characterized in that, The second connection portion extends from the support plate away from the control motherboard, bypassing the support plate and the control motherboard, and the second electrical connector is located on the control motherboard away from the support plate.

4. The control component as described in claim 3, characterized in that, The flexible circuit board further includes a third connecting portion, which is connected to the first connecting portion and is bent. The second connecting portion is connected to the third connecting portion. The first connecting portion and the second connecting portion extend along the same straight line. The first electrical connector is disposed at the extended end of the first connecting portion. The second electrical connector is connected to the extended end of the second connecting portion. The second electrical connector and the first electrical connector are arranged sequentially in the extending direction of the first connecting portion.

5. The control component as described in claim 3, characterized in that, The support plate has a first clearance hole, and both the first connecting part and the second connecting part pass through the first clearance hole.

6. The control component as described in claim 2, characterized in that, The flexible circuit board further includes a fourth connection portion and a fifth connection portion, both connected to the first connection portion. The extension direction of the fourth connection portion is opposite to that of the fifth connection portion and is perpendicular to the extension direction of the first connection portion. The extension end of the fifth connection portion is connected to the electrical connector, and the extension end of the fourth connection portion is detachably connected to the support plate.

7. The control component as claimed in claim 6, characterized in that, A limiting post is provided on the side of the support plate away from the electrical connector, and the fourth connecting part is hooked around the support plate and attached to the limiting post.

8. The control component as claimed in claim 7, characterized in that, The support plate has a second clearance hole, and the fourth connecting part passes through the second clearance hole.

9. The control component as claimed in claim 8, characterized in that, The fourth connection portion has a limiting hole, and the protection line is arranged around at least a portion of the limiting hole.

10. A financial trading device, characterized in that, It includes a device body and a control component as described in any one of claims 1 to 9, wherein the control component is connected to the device body.

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