Modularized splicable desktop cash register and splicing method

Abstract

The invention discloses a modular splicable desktop cash register and a splicing method, and relates to the technical field of cash registers. The modular splicable desktop cash register comprises a host and a display screen, the host comprises a mainboard, the mainboard is provided with a plurality of interfaces, the display screen comprises a plurality of connecting lines, and the connecting lines are detachably connected with the interfaces through plugs. According to the modular splicable desktop cash register and the splicing method, the display screen and the host can be conveniently spliced, the display screen and the host can be detached and placed separately under the condition that the layout needs to be adjusted temporarily, independent maintenance and replacement are facilitated, the modular splicable desktop cash register and the splicing method are more convenient and faster, and the maintenance cost is reduced; during splicing, the plug can be extruded, so that the connection effect is better, looseness in the use process can be avoided, and the plug is more stable and reliable; and during use, the orientation and the inclination angle of the display screen can be conveniently adjusted according to the use requirements, more convenience and rapidness are achieved, and the use effect is better.

Description

Technical Field

[0001] This invention relates to the field of cash register technology, specifically to a modular, connectable desktop cash register and its assembly method. Background Technology

[0002] A desktop cash register is a common commercial payment device, usually placed on a desktop. It consists of hardware and software systems, mainly including a display screen and a host unit.

[0003] Publication number CN112163441B discloses a graphic encoding optical scanning device and a cash register having the device. However, in the use of existing desktop cash registers, the display screen and the main unit are usually integrated into one unit, which is not convenient for splicing, installation and disassembly, making it inconvenient to use. At the same time, it is not convenient to repair and replace, increasing maintenance costs. Furthermore, it is not convenient to adjust its orientation and tilt angle during use, affecting the use effect. Summary of the Invention

[0004] The purpose of this invention is to provide a modular, connectable desktop cash register and a connection method to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a modular and connectable desktop cash register, comprising a main unit and a display screen. The main unit includes a motherboard with multiple interfaces. The display screen includes multiple connecting cables, which are detachably connected to the interfaces via plugs. A mounting plate is connected to the bottom of the display screen via an adjustment mechanism. A mounting slot is provided on the top of the main unit. A movable plate is connected to the mounting slot via a moving mechanism. Multiple triangular blocks are fixedly connected to the side wall of the movable plate. Each triangular block includes an inclined surface and a limiting surface. The top of the movable plate has rounded corners. A clamping mechanism for clamping the plug is provided in the mounting slot.

[0006] Preferably, the moving mechanism includes a slide groove formed in the mounting groove, and the moving plate slides in the slide groove. The moving plate is connected to the side wall of the slide groove through a first spring telescopic sleeve, and the side wall of the main unit is provided with a pulling mechanism for pulling the moving plate.

[0007] Preferably, the pulling mechanism includes a pull rod fixedly connected to the side wall of the moving plate, and the other end of the pull rod passes through the side wall of the main unit and is fixedly connected to a ball.

[0008] Preferably, the clamping mechanism includes multiple fixed blocks fixedly connected to the side wall of the mounting groove, and the top of each fixed block is rotatably connected to a rotating plate via a rotating shaft, the rotation of which is driven by a driving mechanism.

[0009] Preferably, the drive mechanism includes gears fixedly sleeved on the side walls of each rotating shaft, and multiple racks are connected in the mounting slots via a movable component, the racks being meshed with the gears.

[0010] Preferably, the moving component includes a connecting frame fixedly connected to the side wall of the moving plate, and a plurality of connecting blocks are fixedly connected to the side wall of the connecting frame, and each of the racks is connected to the side wall of the connecting block through a third telescopic sleeve.

[0011] Preferably, the adjustment mechanism includes a first rotating rod rotatably connected to the top of the mounting plate, and a U-shaped frame is fixedly connected to the upper end of the first rotating rod. The side wall of the U-shaped frame is rotatably connected to two rotating blocks via a second rotating rod, and the rotating blocks are fixed to the bottom of the display screen. The top of the mounting plate is provided with a first limiting mechanism for limiting the first rotating rod, and the side wall of the U-shaped frame is provided with a second limiting mechanism for limiting the second rotating rod.

[0012] Preferably, the first limiting mechanism includes a fixed ring fixedly sleeved on the side wall of the first rotating rod, and the side wall of the fixed ring is provided with a first friction texture. The top of the mounting plate is fixedly connected to a support block, and the side wall of the support block is connected to a first moving block through a fourth telescopic sleeve rod. The side wall of the first moving block is fixedly connected to a first arc-shaped block, and the first arc-shaped block abuts against the first friction texture.

[0013] Preferably, the second limiting mechanism includes a second friction pattern disposed on the side wall of the second rotating rod, and a bracket is fixedly connected to the side wall of the U-shaped frame. The side wall of the bracket is connected to a second moving block through a fifth telescopic sleeve rod. The side wall of the second moving block is fixedly connected to a second arc-shaped block, and the second arc-shaped block abuts against the second friction pattern.

[0014] A modular, modular desktop cash register assembly method, applicable to modular, modular desktop cash registers, includes the following steps:

[0015] S1: When splicing and installing the display screen and the host, first insert the plug into the interface. Then, move the mounting plate down along the mounting groove. When the mounting plate abuts against the rounded corner, it can push the moving plate to move. At the same time, the first spring telescopic sleeve is compressed. When the mounting plate abuts against the inclined surface, it can push the moving plate to continue moving. When the display screen abuts against the top of the host, the mounting plate passes over the triangular block and is limited by the limiting surface, which can facilitate the splicing and installation of the display screen and prevent loosening and falling off.

[0016] S2: During splicing, when the moving plate moves, it can drive the connecting block to move through the connecting frame, and drive the rack to move through the third telescopic sleeve rod, thereby driving the gear to rotate. When the gear rotates, it can drive the rotating plate to rotate through the rotating shaft and abut against the end of the plug, thereby squeezing the plug. This not only makes the connection effect better, but also prevents loosening during use, making it more stable and reliable.

[0017] S3: When using the device, if the orientation of the display screen needs to be adjusted, the display screen can be rotated, causing the first rotating rod to rotate the fixed ring. At the same time, the first arc-shaped block slides on the surface of the first friction texture. After adjustment, under the action of the fourth telescopic sleeve, the first arc-shaped block can abut against the first friction texture, limiting the fixed ring and the U-shaped frame, and thus limiting the display screen. This makes it easy to adjust the orientation of the display screen according to usage needs. When the tilt angle of the display screen needs to be adjusted, the display screen can be tilted, causing the second rotating rod to rotate. At the same time, the second arc-shaped block slides on the surface of the second friction texture. After adjustment, under the action of the fifth telescopic sleeve, the second arc-shaped block can abut against the second friction texture, limiting the second rotating rod, and thus limiting the display screen. This makes it easier and faster to adjust the tilt angle of the display screen according to usage needs, resulting in better performance.

[0018] S4: When the display screen needs to be disassembled, pull the ball to move the moving plate through the lever, and make the triangular block separate from the mounting plate. At this time, the mounting plate is no longer limited, and the mounting plate can be taken out from the mounting slot. Then, the plug can be unplugged from the interface, which makes it easy to splice the display screen and the host. In case of temporary layout adjustment, it can be disassembled and placed separately. It is also easy to perform individual repair and replacement, which is more convenient and faster, and reduces maintenance costs.

[0019] S5: When it is necessary to disassemble the display screen from the host, the movable plate can move and reset under the action of the first spring telescopic sleeve. At the same time, the rack moves and resets through the connecting frame, connecting block and third telescopic sleeve, so that the rotating plate can be rotated and reset through the gear and rotating shaft, no longer abutting against the end of the plug, making it easy to pull the plug out of the interface.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] (1) This modular and splicable desktop cash register and splicing method, by setting a moving mechanism, when it is necessary to splice and install the display screen and the host, first insert the plug into the interface, then move the mounting plate down along the mounting groove. When the mounting plate abuts against the rounded corner, it can push the moving plate to move. At the same time, the first spring telescopic sleeve is compressed. When the mounting plate abuts against the inclined surface, it can push the moving plate to continue moving. When the display screen abuts against the top of the host, the mounting plate passes over the triangular block and can be limited by the limiting surface. This facilitates the splicing and installation of the display screen and prevents it from loosening or falling off. When the display screen needs to be disassembled, pull the ball, which moves the movable plate through the lever, causing the triangular block to detach from the mounting plate. At this point, the mounting plate is no longer limited and can be removed from the mounting slot. Then, the plug can be unplugged from the interface. This makes it easy to splice the display screen and the host. If a temporary layout adjustment is needed, they can be disassembled and placed separately. They are also easy to repair and replace individually, making it more convenient and faster, and reducing maintenance costs.

[0022] (2) This modular and splicable desktop cash register and splicing method, by setting a pressing mechanism, when the moving plate moves, it can drive the connecting block to move through the connecting frame, and drive the rack to move through the third telescopic sleeve rod, thereby driving the gear to rotate. When the gear rotates, it can drive the rotating plate to rotate through the rotating shaft and abut against the end of the plug, thereby squeezing the plug. This not only makes the connection effect better, but also avoids loosening during use, making it more stable and reliable. When it is necessary to disassemble the display screen from the host, the moving plate can move and reset under the action of the first spring telescopic sleeve rod. At the same time, it drives the rack to move and reset through the connecting frame, connecting block and third telescopic sleeve rod, thereby driving the rotating plate to rotate and reset through the gear and rotating shaft, no longer abutting against the end of the plug, making it easy to pull the plug out of the interface.

[0023] (3) This modular and splicable desktop cash register and splicing method, by setting adjustment mechanisms, allows for adjustments to the orientation of the display screen during use. When the orientation needs to be adjusted, the display screen can be rotated, causing the first rotating rod to rotate the fixed ring. Simultaneously, the first arc-shaped block slides on the surface of the first friction texture. After adjustment, the first arc-shaped block abuts against the first friction texture under the action of the fourth telescopic sleeve rod, limiting the fixed ring and the U-shaped frame, and thus limiting the display screen. This facilitates adjusting the orientation of the display screen according to usage requirements. When the tilt angle of the display screen needs to be adjusted, the display screen can be tilted, causing the second rotating rod to rotate. Simultaneously, the second arc-shaped block slides on the surface of the second friction texture. After adjustment, the second arc-shaped block abuts against the second friction texture under the action of the fifth telescopic sleeve rod, limiting the second rotating rod, and thus limiting the display screen. This facilitates adjusting the tilt angle of the display screen according to usage requirements, making it more convenient and faster, and improving the usage effect. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the overall structure from another perspective of the present invention;

[0026] Figure 3 This is a partial cross-sectional view of the host computer in this invention.

[0027] Figure 4 This is a partial cross-sectional view of the host structure from another perspective in this invention;

[0028] Figure 5 This is a schematic diagram of the adjustment mechanism in this invention;

[0029] Figure 6 This is a schematic diagram showing the position of the clamping mechanism in this invention;

[0030] Figure 7 for Figure 6 A magnified structural diagram of point A in the middle.

[0031] In the diagram: 101, Main unit; 102, Display screen; 103, Mainboard; 104, Interface; 105, Connecting cable; 106, Plug; 201, First spring telescopic sleeve; 202, Slide groove; 301, Pull rod; 302, Ball; 401, Fixing block; 402, Rotating shaft; 403, Rotating plate; 501, Gear; 502, Rack; 601, Connecting frame; 602, Connecting block; 603, Third telescopic sleeve; 701, First rotating rod; 702, U-shaped frame; 703, Second rotating rod; 704. Rotating block; 801. Fixed ring; 802. First friction mark; 803. Support block; 804. Fourth telescopic sleeve; 805. First moving block; 806. First arc-shaped block; 901. Bracket; 902. Fifth telescopic sleeve; 903. Second moving block; 904. Second arc-shaped block; 905. Second friction mark; 1001. Mounting plate; 1002. Mounting groove; 1003. Moving plate; 1004. Triangular block; 1005. Inclined surface; 1006. Limiting surface; 1007. Rounded corner. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Please see Figures 1-7This invention provides a modular, connectable desktop cash register, including a main unit 101 and a display screen 102. The main unit 101 includes a motherboard 103, which has multiple interfaces 104. The display screen 102 includes multiple connecting cables 105, including power cables and data cables, all of which are well-known technologies in this field and will not be described in detail here. The connecting cables 105 are detachably connected to the interfaces 104 via plugs 106. The bottom of the display screen 102 is connected to a mounting plate 1001 via an adjustment mechanism. The top of the main unit 101 has a mounting groove 1002, and a moving plate 1003 is connected to the mounting groove 1002 via a moving mechanism. Multiple triangular blocks 1004 are fixedly connected to the side walls of the moving plate 1003. The corner block 1004 includes a bevel 1005 and a limiting surface 1006. The top of the movable plate 1003 is provided with a rounded corner 1007, and the mounting groove 1002 is provided with a clamping mechanism for pressing the plug 106. This facilitates the splicing of the display screen 102 with the host 101. In case of temporary layout adjustments, it can be disassembled and placed separately, and it is convenient to perform individual repairs and replacements, making it more convenient and faster, and reducing maintenance costs. During splicing, the plug 106 can be squeezed, which not only makes the connection better, but also prevents loosening during use, making it more stable and reliable. During use, it is easy to adjust the orientation and tilt angle of the display screen 102 according to the usage requirements, making it more convenient and faster, and improving the usage effect.

[0034] Please see Figure 3 and Figure 6 The moving mechanism includes a slide groove 202 formed in the mounting groove 1002, and a moving plate 1003 slides in the slide groove 202. The moving plate 1003 is connected to the side wall of the slide groove 202 through a first spring telescopic sleeve 201. The side wall of the main unit 101 is provided with a pulling mechanism for pulling the moving plate 1003. The mounting plate 1001 is moved downward along the mounting groove 1002. When the mounting plate 1001 abuts against the rounded corner 1007, it can push the moving plate 1003 to move into the slide groove 202. At the same time, the first spring telescopic sleeve 201 is compressed.

[0035] Please see Figure 6 The pulling mechanism includes a pull rod 301 fixedly connected to the side wall of the movable plate 1003, and the other end of the pull rod 301 passes through the side wall of the host 101 and is fixedly connected to a ball 302. When the display screen 102 needs to be disassembled, the ball 302 is pulled, and the movable plate 1003 is moved through the pull rod 301, so that the triangular block 1004 is disengaged from the mounting plate 1001. At this time, the mounting plate 1001 is no longer limited, and the mounting plate 1001 can be taken out from the mounting groove 1002.

[0036] Please see Figure 6 and Figure 7The clamping mechanism includes multiple fixing blocks 401 fixedly connected to the side wall of the mounting groove 1002, and the top of each fixing block 401 is rotatably connected to a rotating plate 403 via a rotating shaft 402. The rotation of the rotating shaft 402 is driven by a drive mechanism. During splicing, when the moving plate 1003 moves, it can drive the rotating shaft 402 to rotate via the drive mechanism, and drive the gear 501 to rotate. When the gear 501 rotates, it can drive the rotating plate 403 to rotate via the rotating shaft 402, and abut against the end of the plug 106, thereby squeezing the plug 106. This not only makes the connection effect better, but also prevents loosening during use, making it more stable and reliable.

[0037] Please see Figure 7 The drive mechanism includes gears 501 fixedly sleeved on the side walls of each rotating shaft 402, and multiple racks 502 connected in the mounting groove 1002 via a moving component. The racks 502 mesh with the gears 501, and the moving component drives the racks 502 to move, thereby driving the gears 501 to rotate.

[0038] Please see Figure 6 and Figure 7 The movable component includes a connecting frame 601 fixedly connected to the side wall of the movable plate 1003, and multiple connecting blocks 602 are fixedly connected to the side wall of the connecting frame 601. Each rack 502 is connected to the side wall of the connecting block 602 through a third telescopic sleeve 603. When the movable plate 1003 moves, the connecting block 602 can be moved by the connecting frame 601, and the rack 502 can be moved by the third telescopic sleeve 603. When the rotating plate 403 abuts against the end of the plug 106, the third telescopic sleeve 603 can be compressed, achieving a pre-tightening effect.

[0039] Please see Figure 4 and Figure 5The adjustment mechanism includes a first rotating rod 701 rotatably connected to the top of the mounting plate 1001, and a U-shaped frame 702 fixedly connected to the upper end of the first rotating rod 701. Two rotating blocks 704 are rotatably connected to the side wall of the U-shaped frame 702 via a second rotating rod 703, and the rotating blocks 704 are fixed to the bottom of the display screen 102. A first limiting mechanism for limiting the first rotating rod 701 is provided on the top of the mounting plate 1001, and a second limiting mechanism for limiting the second rotating rod 703 is provided on the side wall of the U-shaped frame 702. During use, when adjustment is required... When adjusting the orientation of the display screen 102, the display screen 102 can be rotated, which simultaneously drives the first rotating rod 701 to rotate. After adjustment, the first rotating rod 701 is limited by the first limiting mechanism. When it is necessary to adjust the tilt angle of the display screen 102, the display screen 102 can be tilted, causing the second rotating rod 703 to rotate. After adjustment, the second rotating rod 703 is limited by the second limiting mechanism. This makes it easier and faster to adjust the tilt angle of the display screen 102 according to usage needs, resulting in better performance.

[0040] Please see Figure 5 The first limiting mechanism includes a fixed ring 801 fixedly sleeved on the side wall of the first rotating rod 701, and the side wall of the fixed ring 801 is provided with a first friction texture 802. A support block 803 is fixedly connected to the top of the mounting plate 1001, and the side wall of the support block 803 is connected to a first moving block 805 through a fourth telescopic sleeve rod 804. A first arc-shaped block 806 is fixedly connected to the side wall of the first moving block 805, and the first arc-shaped block 806 abuts against the first friction texture 802. When the first rotating rod 701 rotates, it drives the fixed ring 801 to rotate. At the same time, the first arc-shaped block 806 slides on the surface of the first friction texture 802. After adjustment, under the action of the fourth telescopic sleeve rod 804, the first arc-shaped block 806 can abut against the first friction texture 802, which can limit the fixed ring 801 and the U-shaped frame 702.

[0041] Please see Figure 5 The second limiting mechanism includes a second friction texture 905 disposed on the side wall of the second rotating rod 703, and a bracket 901 fixedly connected to the side wall of the U-shaped frame 702. The side wall of the bracket 901 is connected to a second moving block 903 via a fifth telescopic sleeve rod 902. The side wall of the second moving block 903 is fixedly connected to a second arc-shaped block 904, and the second arc-shaped block 904 abuts against the second friction texture 905. When the second rotating rod 703 rotates, the second arc-shaped block 904 slides on the surface of the second friction texture 905. After adjustment, under the action of the fifth telescopic sleeve rod 902, the second arc-shaped block 904 abuts against the second friction texture 905, thereby limiting the second rotating rod 703.

[0042] A modular, modular, and connectable desktop cash register assembly method, applicable to modular, modular, and connectable desktop cash registers, includes the following steps:

[0043] S1: When it is necessary to splice and install the display screen 102 and the host 101, first insert the plug 106 into the interface 104. Then, move the mounting plate 1001 downward along the mounting groove 1002. When the mounting plate 1001 abuts against the rounded corner 1007, it can push the moving plate 1003 to move. At the same time, the first spring telescopic sleeve 201 is compressed. When the mounting plate 1001 abuts against the inclined surface 1005, it can push the moving plate 1003 to continue moving. When the display screen 102 abuts against the top of the host 101, the mounting plate 1001 passes over the triangular block 1004 and is limited by the limiting surface 1006, which facilitates the splicing and installation of the display screen 102 and can prevent loosening and falling off.

[0044] S2: During splicing, when the moving plate 1003 moves, it can drive the connecting block 602 to move through the connecting frame 601, and drive the rack 502 to move through the third telescopic sleeve rod 603, thereby driving the gear 501 to rotate. When the gear 501 rotates, it can drive the rotating plate 403 to rotate through the rotating shaft 402, and abut against the end of the plug 106, thereby squeezing the plug 106. This not only makes the connection effect better, but also prevents loosening during use, making it more stable and reliable.

[0045] S3: During use, when it is necessary to adjust the orientation of the display screen 102, the display screen 102 can be rotated, causing the first rotating rod 701 to drive the fixing ring 801 to rotate. At the same time, the first arc-shaped block 806 slides on the surface of the first friction texture 802. After adjustment, under the action of the fourth telescopic sleeve rod 804, the first arc-shaped block 806 can abut against the first friction texture 802, which can limit the fixing ring 801 and the U-shaped frame 702, thereby limiting the display screen 102, thus facilitating the adjustment of the display screen 102 according to usage requirements. When it is necessary to adjust the tilt angle of the display screen 102, the display screen 102 can be tilted to rotate the second rotating rod 703. At the same time, the second arc-shaped block 904 slides on the surface of the second friction texture 905. After the adjustment is completed, under the action of the fifth telescopic sleeve rod 902, the second arc-shaped block 904 can abut against the second friction texture 905, which can limit the second rotating rod 703, and thus limit the display screen 102. This makes it easier to adjust the tilt angle of the display screen 102 according to the usage requirements, which is more convenient, faster and better.

[0046] S4: When the display screen 102 needs to be disassembled, pull the ball 302, and the moving plate 1003 will be moved by the pull rod 301, so that the triangular block 1004 will be disengaged from the mounting plate 1001. At this time, the mounting plate 1001 is no longer limited, and the mounting plate 1001 can be taken out from the mounting slot 1002. Then, the plug 106 can be pulled out from the interface 104, which makes it easy to splice the display screen 102 and the host 101. In case of temporary layout adjustment, they can be disassembled and placed separately. Furthermore, they are easy to repair and replace individually, which is more convenient and faster, and reduces maintenance costs.

[0047] S5: When it is necessary to disassemble the display screen 102 from the host 101, the movable plate 1003 can move and reset under the action of the first spring telescopic sleeve 201. At the same time, the rack 502 is moved and reset through the connecting frame 601, the connecting block 602 and the third telescopic sleeve 603. Thus, the rotating plate 403 can be rotated and reset through the gear 501 and the rotating shaft 402, and no longer abuts against the end of the plug 106, making it easy to pull the plug 106 out of the interface 104.

[0048] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0049] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A modular, connectable desktop cash register, comprising a main unit (101) and a display screen (102), wherein the main unit (101) includes a motherboard (103) and a plurality of interfaces (104) are provided on the motherboard (103), and the display screen (102) includes a plurality of connecting cables (105), and the connecting cables (105) are detachably connected to the interfaces (104) via plugs (106), characterized in that: The bottom of the display screen (102) is connected to the mounting plate (1001) via an adjustment mechanism, and the top of the host (101) is provided with a mounting groove (1002). A moving plate (1003) is connected to the mounting groove (1002) via a moving mechanism, and multiple triangular blocks (1004) are fixedly connected to the side wall of the moving plate (1003). The triangular block (1004) includes a slope (1005) and a limiting surface (1006). The top of the moving plate (1003) is provided with a rounded corner (1007), and a clamping mechanism for clamping the plug (106) is provided in the mounting groove (1002).

2. The modular, connectable desktop cash register according to claim 1, characterized in that: The moving mechanism includes a slide (202) opened in the mounting groove (1002), and a moving plate (1003) slides in the slide (202). The moving plate (1003) is connected to the side wall of the slide (202) through a first spring telescopic sleeve (201), and the side wall of the main unit (101) is provided with a pulling mechanism for pulling the moving plate (1003).

3. A modular, connectable desktop cash register according to claim 2, characterized in that: The pulling mechanism includes a pull rod (301) fixedly connected to the side wall of the moving plate (1003), and the other end of the pull rod (301) passes through the side wall of the host (101) and is fixedly connected to a ball (302).

4. A modular, connectable desktop cash register according to claim 1, characterized in that: The clamping mechanism includes multiple fixing blocks (401) fixedly connected to the side wall of the mounting groove (1002), and the top of each fixing block (401) is rotatably connected to a rotating plate (403) via a rotating shaft (402). The rotation of the rotating shaft (402) is driven by a driving mechanism.

5. A modular, connectable desktop cash register according to claim 4, characterized in that: The drive mechanism includes gears (501) fixedly sleeved on the side wall of each rotating shaft (402), and multiple racks (502) are connected in the mounting groove (1002) by a moving component, wherein the racks (502) are meshed with the gears (501).

6. A modular, connectable desktop cash register according to claim 5, characterized in that: The moving component includes a connecting frame (601) fixedly connected to the side wall of the moving plate (1003), and a plurality of connecting blocks (602) are fixedly connected to the side wall of the connecting frame (601). Each of the racks (502) is connected to the side wall of the connecting block (602) through a third telescopic sleeve (603).

7. A modular, connectable desktop cash register according to claim 1, characterized in that: The adjustment mechanism includes a first rotating rod (701) rotatably connected to the top of the mounting plate (1001), and a U-shaped frame (702) is fixedly connected to the upper end of the first rotating rod (701). The side wall of the U-shaped frame (702) is rotatably connected to two rotating blocks (704) via a second rotating rod (703), and the rotating blocks (704) are fixed to the bottom of the display screen (102). The top of the mounting plate (1001) is provided with a first limiting mechanism for limiting the first rotating rod (701), and the side wall of the U-shaped frame (702) is provided with a second limiting mechanism for limiting the second rotating rod (703).

8. A modular, connectable desktop cash register according to claim 7, characterized in that: The first limiting mechanism includes a fixed ring (801) fixedly sleeved on the side wall of the first rotating rod (701), and the side wall of the fixed ring (801) is provided with a first friction texture (802). The top of the mounting plate (1001) is fixedly connected to a support block (803), and the side wall of the support block (803) is connected to a first moving block (805) through a fourth telescopic sleeve rod (804). The side wall of the first moving block (805) is fixedly connected to a first arc-shaped block (806), and the first arc-shaped block (806) abuts against the first friction texture (802).

9. A modular, connectable desktop cash register according to claim 7, characterized in that: The second limiting mechanism includes a second friction pattern (905) disposed on the side wall of the second rotating rod (703), and a bracket (901) is fixedly connected to the side wall of the U-shaped frame (702). The side wall of the bracket (901) is connected to a second moving block (903) through a fifth telescopic sleeve rod (902). The side wall of the second moving block (903) is fixedly connected to a second arc-shaped block (904), and the second arc-shaped block (904) abuts against the second friction pattern (905).

10. A modular, modular, and connectable desktop cash register assembly method, applicable to the modular, modular, and connectable desktop cash register as described in any one of claims 1-9, characterized in that: Includes the following steps: S1: When it is necessary to splice and install the display screen (102) and the host (101), first insert the plug (106) into the interface (104), then move the mounting plate (1001) down along the mounting groove (1002). When the mounting plate (1001) abuts against the rounded corner (1007), it can push the moving plate (1003) to move. At the same time, the first spring telescopic sleeve (201) is compressed. When the mounting plate (1001) abuts against the inclined surface (1005), it can push the moving plate (1003) to continue moving. When the display screen (102) abuts against the top of the host (101), the mounting plate (1001) passes over the triangular block (1004) and under the action of the limiting surface (1006), it can limit the mounting plate (1001), thereby facilitating the splicing and installation of the display screen (102) and preventing loosening and falling off. S2: When splicing, when the moving plate (1003) moves, it can drive the connecting block (602) to move through the connecting frame (601), and drive the rack (502) to move through the third telescopic sleeve rod (603), thereby driving the gear (501) to rotate. When the gear (501) rotates, it can drive the rotating plate (403) to rotate through the rotating shaft (402) and abut against the end of the plug (106), thereby squeezing the plug (106), which not only makes the connection effect better, but also avoids loosening during use, making it more stable and reliable. S3: When using the device, if it is necessary to adjust the orientation of the display screen (102), the display screen (102) can be rotated, causing the first rotating rod (701) to drive the fixing ring (801) to rotate. At the same time, the first arc-shaped block (806) slides on the surface of the first friction texture (802). After the adjustment is completed, under the action of the fourth telescopic sleeve rod (804), the first arc-shaped block (806) can abut against the first friction texture (802), which can limit the fixing ring (801) and the U-shaped frame (702), thereby limiting the display screen (102), so as to facilitate the adjustment of the display screen (102) according to the usage requirements. When it is necessary to adjust the tilt angle of the display screen (102), the display screen (102) can be tilted to make the second rotating rod (703) rotate. At the same time, the second arc block (904) slides on the surface of the second friction texture (905). After the adjustment is completed, under the action of the fifth telescopic sleeve rod (902), the second arc block (904) can abut against the second friction texture (905), which can limit the second rotating rod (703) and thus limit the display screen (102). This makes it easier to adjust the tilt angle of the display screen (102) according to the usage requirements, which is more convenient and faster, and the usage effect is better. S4: When it is necessary to disassemble the display screen (102), pull the ball (302) and move the moving plate (1003) through the pull rod (301), so that the triangular block (1004) is separated from the mounting plate (1001). At this time, the mounting plate (1001) is no longer limited, and the mounting plate (1001) can be taken out from the mounting slot (1002). Then, the plug (106) can be pulled out from the interface (104), which makes it easier to splice the display screen (102) and the host (101). In case of temporary layout adjustment, they can be disassembled and placed separately. Furthermore, it is convenient to carry out individual repair and replacement, which is more convenient and faster, and reduces maintenance costs. S5: When it is necessary to disassemble the display screen (102) from the host (101), the movable plate (1003) can move and reset under the action of the first spring telescopic sleeve (201). At the same time, the rack (502) is driven to move and reset through the connecting frame (601), the connecting block (602) and the third telescopic sleeve (603). Thus, the rotating plate (403) can be driven to rotate and reset through the gear (501) and the rotating shaft (402), and no longer abut against the end of the plug (106), making it easy to pull the plug (106) out of the interface (104).

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