A POS machine security terminal with double bottom shell and anti-disassembly point

Abstract

The utility model relates to POS machine safety terminal related technical field, especially with double bottom shell anti -disassembly point POS machine safety terminal, including terminal upper cover, the lower extreme of terminal upper cover is provided with terminal lower cover, the lower extreme fixed mounting of terminal upper cover has the nut, the both ends of terminal lower cover all are fixedly installed and are penetrated to have first connecting rod, the front end fixed mounting of first connecting rod has first limit block, the front end of terminal lower cover is provided with limit slot, through with first limit block precision card into limit slot as benchmark, firmly lock the moving path of first connecting rod, avoid the transmission deviation of traditional structure because of no benchmark, again by first connecting rod synchronous drive second limit block directional push one of third limit blocks, make it separate from the tooth groove of first gear and realize one -sided unlocking, reserve another third limit block under the elastic pre -tightening effect always resist first gear, form only allow first gear unidirectional rotation, reverse be firmly locked mechanical logic.

Description

Technical Field

[0001] This utility model relates to the technical field of POS machine security terminals, and in particular to a POS machine security terminal with double bottom shell anti-tamper points. Background Technology

[0002] As the electronic payment field evolves towards greater security and efficiency, the security protection capabilities and mechanical structure stability of POS terminals have become core considerations in determining whether a product can adapt to commercial scenarios and meet compliance requirements. Currently, the industry's R&D direction has gradually shifted from single-function implementation to dual-shell anti-tampering configurations. With its strong resistance to illegal disassembly, it can effectively protect the security of the terminal's internal circuitry and transaction data, becoming the mainstream technology choice for mid-to-high-end secure POS terminals.

[0003] Traditional POS machine security terminals have a simple anti-tampering mechanism that does not cover the critical connection areas of the core components on the upper and lower covers. This makes it easy for dismantlers to bypass the critical path and disassemble the terminals. The assembly of the upper and lower covers relies on simple buckles or single screws, which not only have low positioning accuracy but are also prone to loosening due to vibration during long-term use.

[0004] To address the aforementioned issues, a search revealed a patent with publication number CN218585414U that discloses a housing assembly for a smart POS terminal. The patent states that "through the structural design of the fixing mechanism, the POS terminal can be installed and disassembled without the need for external tools, greatly increasing the convenience of use and reducing production costs." However, the fixing mechanism has many parts and a long transmission path, which can lead to accumulated errors due to gear wear and loose transmission shafts during long-term use, causing the positioning block to fail to accurately engage with the groove of the upper cover positioning sleeve.

[0005] In light of this, in-depth research into the aforementioned issues led to the creation of this case. Utility Model Content

[0006] The purpose of this utility model is to provide a POS machine security terminal with double bottom shell anti-tampering points, so as to solve the problem that the traditional POS machine security terminal anti-tampering mechanism mentioned in the background art is simple, does not cover the key connection area of ​​the core components carried by the upper and lower covers of the terminal, and is easy for dismantlers to bypass the key path to achieve disassembly. The assembly of the upper and lower covers relies on simple buckles or single screws, which not only has low positioning accuracy, but is also prone to loosening due to vibration during long-term use.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a secure POS terminal with dual bottom shell anti-tamper points, comprising a terminal top cover, a terminal bottom cover at the lower end of the top cover, a nut fixedly installed at the lower end of the top cover, a first connecting rod fixedly installed through both ends of the terminal bottom cover, a first limiting block fixedly installed at the front end of the first connecting rod, a limiting groove provided at the front end of the terminal bottom cover, a handle provided at the front end of the terminal bottom cover, a first gear fixedly installed at the rear end of the handle, a second limiting block fixedly installed at the rear end of the first connecting rod, a second connecting rod fixedly installed through both ends of the terminal bottom cover, a third limiting block sleeved on the outer ring of the second connecting rod, a second gear provided at the rear end of the first gear, threaded rods fixedly installed through both ends of the second gear, a bolt provided at the upper end of the terminal bottom cover, a display screen provided at the lower end of the top cover, a motherboard provided at the lower end of the display screen, a first bottom shell anti-tamper point provided at the lower end of the motherboard, and a second bottom shell anti-tamper point provided at the lower end of the motherboard.

[0008] Preferably, a magnetic head is fixedly mounted on the front end of the motherboard, and a magnetic head connector is provided at the lower end of the motherboard.

[0009] Preferably, a backup power supply is provided at the lower end of the motherboard, and an IC card slot retainer is provided at the lower end of the motherboard.

[0010] Preferably, the lower end of the motherboard is provided with a zebra stripe, and the lower end of the motherboard is provided with a main power supply.

[0011] Preferably, the outer ring of the display screen is fitted with a protective frame, and the terminal cover is connected to the display screen through the protective frame.

[0012] Preferably, a silicone button is fixedly installed on the upper end of the terminal cover, and a connecting plate is provided at the lower end of the silicone button.

[0013] Preferably, the lower end of the connecting plate is provided with a keyboard area protection point, and the lower end of the silicone key is provided with a key anti-tampering point.

[0014] Preferably, a rectangular limiting boss is fixedly installed on the lower surface of the first limiting block, and its outer contour matches the rectangular slot opened in the limiting groove.

[0015] Preferably, the first limiting block and the second limiting block are connected by a first connecting rod, and the third limiting block is connected to the lower cover of the terminal by a spring.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. The double bottom shell anti-tamper points are the basic defense line. The anti-tamper points are not randomly arranged, but strictly correspond to the core connection area of ​​the upper and lower covers of the terminal. This area is the key connection point for the upper and lower covers to achieve structural stability. It bears the weight of core components such as the motherboard and main power supply, and is also the only way to break through the disassembly. By symmetrically distributing the first and second bottom shell anti-tamper points on both sides of the central axis of this area, the long side seam of the upper and lower covers that is most easily pried open is directly covered, forming a protective belt.

[0018] 2. By precisely locking the first limiting block into the limiting groove as a reference, the movement path of the first connecting rod is firmly locked, avoiding transmission offset caused by the lack of a reference in traditional structures. Then, the first connecting rod synchronously drives the second limiting block to push one of the third limiting blocks in a directional manner, causing it to disengage from the tooth groove of the first gear to achieve unilateral unlocking. At the same time, the other third limiting block is kept against the first gear under the elastic pre-tightening effect, forming a mechanical logic that only allows the first gear to rotate in one direction and is firmly locked in the opposite direction. The assembly of the upper and lower covers no longer relies on simple buckles or single screws, but through the meshing transmission of the first and second gears, the threaded rod is driven to precisely engage with the nut of the terminal upper cover. With the above-mentioned unidirectional locking structure, the positioning accuracy during the assembly of the upper and lower covers is ensured, and in long-term use or under vibration environment, the continuous pressing of the gear by the third limiting block prevents the transmission structure from loosening in the opposite direction, completely solving the loosening and loosening risks of traditional designs. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall appearance and structure of the present utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the fence and mesh panel of this utility model in cooperation;

[0021] Figure 3 This is a schematic diagram of the interaction between the third limiting block and the first gear of this utility model;

[0022] Figure 4 This is a schematic diagram of the interaction between the motherboard and the read / write head of this utility model;

[0023] Figure 5 This is a schematic diagram of the structure of the silicone button and connecting plate of this utility model.

[0024] In the diagram: 1. Terminal top cover; 2. Terminal bottom cover; 3. Nut; 4. First connecting rod; 5. First limiting block; 6. Limiting groove; 7. Handle; 8. First gear; 9. Second limiting block; 10. Second connecting rod; 11. Third limiting block; 12. Second gear; 13. Threaded rod; 14. Bolt; 15. Display screen; 16. Mainboard; 17. First bottom shell anti-tamper point; 18. Second bottom shell anti-tamper point; 19. Magnetic head; 20. Magnetic head connector; 21. Backup power; 22. IC card slot barrier; 23. Zebra strip; 24. Main power; 25. Protective frame; 26. Silicone button; 27. Connecting plate; 28. Keyboard area protection point; 29. ​​Button anti-tamper point; 30. Fence; 31. Mesh board. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1-5 This utility model provides a technical solution: a secure POS terminal with a double-shell anti-tampering feature, including a terminal upper cover 1, a terminal lower cover 2 at the lower end of the terminal upper cover 1, a nut 3 fixedly installed at the lower end of the terminal upper cover 1, a first connecting rod 4 fixedly installed through both ends of the terminal lower cover 2, a first limiting block 5 fixedly installed at the front end of the first connecting rod 4, a limiting groove 6 provided at the front end of the terminal lower cover 2, a handle 7 provided at the front end of the terminal lower cover 2, a first gear 8 fixedly installed at the rear end of the handle 7, and a first gear 8 fixedly installed at the rear end of the first connecting rod 4. The second limiting block 9, the second connecting rod 10 is fixedly installed through both ends of the terminal lower cover 2, the third limiting block 11 is sleeved on the outer ring of the second connecting rod 10, the second gear 12 is provided at the rear end of the first gear 8, the threaded rod 13 is fixedly installed through both ends of the second gear 12, the bolt 14 is provided at the upper end of the terminal lower cover 2, the display screen 15 is provided at the lower end of the terminal upper cover 1, the main board 16 is provided at the lower end of the display screen 15, the first bottom shell anti-disassembly point 17 is provided at the lower end of the main board 16, and the second bottom shell anti-disassembly point 18 is provided at the lower end of the main board 16.

[0027] Furthermore, a magnetic head 19 is fixedly installed on the front end of the motherboard 16, and a magnetic head connector 20 is provided at the lower end of the motherboard 16. The magnetic head 19 is configured to provide the terminal with the core information reading function for card swiping transactions. At the same time, in conjunction with the magnetic head connector 20 located in the core security area formed by the fence 30 and the MESH board 31, stable signal transmission between the magnetic head and the motherboard is achieved.

[0028] Furthermore, a backup power supply 21 is provided at the lower end of the main board 16, and an IC card slot retainer 22 is provided at the lower end of the main board 16. Through the setting of the backup power supply 21, whose model is CR2016, it can provide continuous power supply to the terminal when the main power supply 24 is disconnected.

[0029] Furthermore, a zebra stripe 23 is provided at the lower end of the motherboard 16, and a main power supply 24 is provided at the lower end of the motherboard 16. The main power supply 24 provides a stable and continuous main power supply for the core functional components of the terminal, ensuring the normal operation of daily high-frequency card swiping, electronic payment and other operations.

[0030] Furthermore, a protective frame 25 is provided around the outer edge of the display screen 15. The terminal cover 1 and the display screen 15 are connected through the protective frame 25. The protective frame 25 can fully cover the four sides of the display screen 15, effectively resisting external impacts such as table bumps and minor drops that may occur during the daily use of the POS terminal, and preventing the corners of the display screen from breaking or the surface from being scratched.

[0031] Furthermore, a silicone button 26 is fixedly installed on the upper end of the terminal cover 1, and a connecting plate 27 is provided at the lower end of the silicone button 26. The silicone button 26 provides convenient input operation for the terminal in high-frequency trading scenarios.

[0032] Furthermore, the lower end of the connecting plate 27 is provided with a keyboard area protection point 28, and the lower end of the silicone button 26 is provided with a button anti-tamper point 29. By setting the keyboard area protection point 28, the vertical displacement of the silicone button 26 can be limited to avoid excessive pressing and rebound failure, and external tools can be prevented from intruding into the terminal through the button gap.

[0033] Furthermore, a fence 30 is provided at the lower end of the motherboard 16, and a MESH board 31 is provided at the lower end of the motherboard 16. The motherboard 16 and the MESH board 31 are connected by a zebra strip 23. The zebra strip 23 can compensate for minor deviations during assembly, absorb daily vibration and buffer impact, and prevent contact wear caused by hard connection.

[0034] Furthermore, a rectangular limiting boss is fixedly installed on the lower surface of the first limiting block 5. Its outer contour matches the rectangular slot opened in the limiting groove 6. Through the setting of the limiting groove 6, the rectangular slot opened therein matches the rectangular limiting boss on the lower side of the first limiting block 5 precisely, which can firmly lock the movement path of the first connecting rod 4.

[0035] Furthermore, the first limiting block 5 and the second limiting block 9 are connected by the first connecting rod 4, and the third limiting block 11 is connected to the terminal lower cover 2 by a spring. With the setting of the third limiting block 11, it can always resist the first gear 8 under the elastic pre-tightening action to form a one-way lock.

[0036] Working principle: By precisely engaging the first limiting block 5 into the limiting groove 6, the movement path of the first connecting rod 4 is locked, preventing transmission deviation. The first connecting rod 4 drives the second limiting block 9 to push the third limiting block 11 on one side, causing it to disengage from the first gear 8. The third limiting block 11 on the other side remains against the first gear 8 under elastic pre-tightening, forming a one-way lock. Rotating the handle 7 drives the first gear 8 to mesh with the second gear 12, causing the threaded rod 13 to precisely engage with the nut 3 of the terminal cover 1, achieving a stable assembly of the upper and lower covers. This solves the problems of low positioning accuracy and easy loosening of traditional buckles or single screws. The first bottom shell anti-disassembly point 17 and the second bottom shell anti-disassembly point 18 are symmetrically distributed in the core connection area of ​​the upper and lower covers, supporting the main board 16. Components such as the main power supply 24 form a protective strip, covering the long side seam most easily pried open. Together with the keyboard area protection point 28 and the key anti-tamper point 29, it forms a full-area anti-tamper network. The magnetic head 19 reads the card swipe information and transmits it to the main board 16 through the magnetic head connector 20 located in the core security area formed by the fence 30 and the MESH board 31. The main power supply 24 supplies power to the display screen 15, magnetic head 19 and other core components. The backup power supply 21 ensures the operation of the real-time clock and anti-tamper circuit when the main power is disconnected. The zebra strip 23 elastically connects the main board 16 and the MESH board 31, compensates for assembly deviations and absorbs vibration, and ensures stable signal transmission. The protective frame 25 wraps around the display screen 15 to resist impact, and the IC card socket barrier 22 isolates sensitive components.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A secure POS terminal with a double-layered bottom shell and anti-tampering features, comprising a terminal top cover (1), characterized in that: A lower terminal cover (2) is provided at the lower end of the upper terminal cover (1). A nut (3) is fixedly installed at the lower end of the upper terminal cover (1). A first connecting rod (4) is fixedly installed through both ends of the lower terminal cover (2). A first limiting block (5) is fixedly installed at the front end of the first connecting rod (4). A limiting groove (6) is provided at the front end of the lower terminal cover (2). A handle (7) is provided at the front end of the lower terminal cover (2). A first gear (8) is fixedly installed at the rear end of the handle (7). A second limiting block (9) is fixedly installed at the rear end of the first connecting rod (4). Both ends of the lower terminal cover (2) are fixedly installed through. A second connecting rod (10) is installed, and a third limiting block (11) is sleeved on the outer ring of the second connecting rod (10). A second gear (12) is provided at the rear end of the first gear (8). Threaded rods (13) are fixedly installed through both ends of the second gear (12). A bolt (14) is provided at the upper end of the terminal lower cover (2). A display screen (15) is provided at the lower end of the terminal upper cover (1). A motherboard (16) is provided at the lower end of the display screen (15). A first bottom shell anti-disassembly point (17) is provided at the lower end of the motherboard (16). A second bottom shell anti-disassembly point (18) is provided at the lower end of the motherboard (16).

2. A POS terminal with a double-bottom shell and anti-tampering features as described in claim 1, characterized in that: A magnetic head (19) is fixedly mounted on the front end of the motherboard (16), and a magnetic head connector (20) is provided at the lower end of the motherboard (16).

3. A POS terminal with a double-bottom shell and anti-tampering features as described in claim 1, characterized in that: The motherboard (16) is provided with a backup power supply (21) at the lower end, and the motherboard (16) is provided with an IC card slot barrier (22) at the lower end.

4. A POS terminal with a double-bottom shell and anti-tampering features as described in claim 1, characterized in that: The motherboard (16) has a zebra stripe (23) at its lower end and a main power supply (24) at its lower end.

5. A POS terminal with a double-bottom shell and anti-tampering features as described in claim 1, characterized in that: The outer ring of the display screen (15) is fitted with a protective frame (25), and the terminal cover (1) is connected to the display screen (15) through the protective frame (25).

6. A POS terminal with a double-bottom shell and anti-tampering features as described in claim 1, characterized in that: A silicone button (26) is fixedly installed on the upper end of the terminal cover (1), and a connecting plate (27) is provided on the lower end of the silicone button (26).

7. A POS terminal with a double-bottom shell and anti-tampering features as described in claim 6, characterized in that: The lower end of the connecting plate (27) is provided with a keyboard area protection point (28), and the lower end of the silicone button (26) is provided with a button anti-tampering point (29).

8. A POS terminal with a double-bottom shell and anti-tampering features as described in claim 1, characterized in that: The lower end of the motherboard (16) is provided with a fence (30), and the lower end of the motherboard (16) is provided with a MESH board (31). The motherboard (16) and the MESH board (31) are connected by a zebra strip (23).

9. A POS terminal with a double-bottom shell and anti-tampering features as described in claim 1, characterized in that: A rectangular limiting boss is fixedly installed on the lower surface of the first limiting block (5), and its outer contour matches the rectangular slot opened in the limiting groove (6).

10. A POS terminal with a double-bottom shell and anti-tampering features as described in claim 1, characterized in that: The first limiting block (5) and the second limiting block (9) are connected by the first connecting rod (4), and the third limiting block (11) is connected to the terminal lower cover (2) by a spring.

Images