Intelligent brush palm cash register

Abstract

The invention discloses an intelligent brush palm cash register. The first display screen and the second display screen are used for displaying, the palm print recognizer is used for recognizing palm prints, the support is used for installing the first display screen and the second display screen, the palm print recognizer is connected with the second display screen through an insertion mechanism, a U-shaped installation frame is installed on the second display screen, and the U-shaped installation frame is connected with the palm print recognizer through an insertion mechanism. The U-shaped mounting frame is provided with a mounting hole for mounting the insertion mechanism, the palm print recognizer is provided with a connecting plate, and the connecting plate is provided with an insertion hole matched with the insertion mechanism; the plug-in mechanism is provided with a plug pin, the plug pin is inserted into the plug hole, the plug pin retracts from the plug hole when the plug-in mechanism is unlocked, and part of the plug pin is located in the plug hole when the plug-in mechanism is locked. According to the intelligent brush palm cash register, the palm print recognizer can be disassembled and assembled without a tool.

Description

Technical Field

[0001] The present invention relates to the technical field of cash registers, and in particular to an intelligent palm-swipe cash register. Background Art

[0002] With the rapid development of science and technology, payment methods are constantly innovating. From cash, bank cards to mobile payments, convenience and security continue to improve. Today, palmprint payment is a new payment method. Palmprint payment is based on biometric technology. It scans the user's palmprint features and compares them with pre-stored information to confirm the identity to complete the payment. Everyone's palmprint is unique, including main lines, wrinkles and other feature points, which is the security guarantee of palmprint payment.

[0003] Compared with traditional payment, palmprint payment has significant advantages, such as convenience and security. Currently, palmprint payment has been applied in retail, catering, transportation hubs and other places.

[0004] However, the palm print recognition device and the display screen are fixed by screws, and tools are needed to complete the disassembly and assembly, which is inconvenient. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide an intelligent palm-swiping cash register whose palm print identifier can be disassembled without the aid of tools.

[0006] In order to solve the above problems, the present invention provides an intelligent palm-swipe cash register, which includes a first display screen and a second display screen for display, a palm print recognizer for identifying palm prints, and a bracket for installing the first display screen and the second display screen, the palm print recognizer is connected to the second display screen through a plug-in mechanism, a U-shaped mounting frame is installed on the second display screen, and a mounting hole for installing the plug-in mechanism is provided on the U-shaped mounting frame, a connecting plate is provided on the palm print recognizer, and a plug-in hole adapted to the plug-in mechanism is provided on the connecting plate; the plug-in mechanism has a latch, which is inserted into the plug-in hole, and the latch is retracted from the plug-in hole when the plug-in mechanism is unlocked, and part of the latch is located in the plug-in hole when the plug-in mechanism is locked.

[0007] Furthermore, the first display screen and the second display screen are mounted on a bracket via a plug-in mechanism, and the bracket is provided with a first mounting plate and a second mounting plate, and there are two first mounting plates and two second mounting plates, and each of the first mounting plates and the second mounting plates is provided with a mounting hole for installing the plug-in mechanism, and the first display screen and the second display screen are both provided with a socket adapted to the plug-in mechanism.

[0008] Furthermore, the plug-in mechanism includes a locking pin for inserting into the socket, a locking block and a limiting member for cooperating with each other to achieve limiting, a reset spring for resetting the locking pin, a limiting sleeve for limiting the moving space of the locking pin, and a driving rod for pulling the limiting sleeve or pressing the locking pin, the locking block is connected to the locking pin, the locking block has a first locking position and a second locking position, one end of the limiting member is slidably disposed on the locking block, the limiting member can reciprocate between the first locking position and the second locking position, the other end of the limiting member is mounted on the bracket or the U-shaped mounting frame, the mounting hole is provided with a first clamping groove and a second clamping groove for clamping the limiting sleeve, and the limiting sleeve can reciprocate in the first clamping groove and the second clamping groove.

[0009] Furthermore, the mounting hole includes a first accommodating hole, a second accommodating hole and a through hole, the first accommodating hole is connected to the second accommodating hole, the first accommodating hole is used to install a locking pin and a limiting sleeve, the reset spring is supported on the bottom of the first accommodating hole and the locking pin, and the through hole is used for the plug-in mechanism to extend and insert into the socket.

[0010] Furthermore, the first mounting plate and the second mounting plate each include a plate body and a cover plate disposed on the plate body, the first accommodating hole and the through-hole are both disposed on the plate body, and the second accommodating hole is formed by a combination of the plate body and the cover plate, and the U-shaped mounting frame has a U-shaped frame body and a baffle plate disposed on the U-shaped frame body, the first accommodating hole and the through-hole are both disposed on the U-shaped frame body, and the second accommodating hole is formed by a combination of the U-shaped frame body and the baffle plate.

[0011] Furthermore, the locking pin has a supporting portion, and one end of the return spring is supported on the supporting portion.

[0012] Furthermore, the locking block is provided with a guide groove, the guide groove has a first locking position and a second locking position, the inner side wall of the guide groove is provided with a first inner rotation angle, a second inner rotation angle, a third inner rotation angle and a fourth inner rotation angle, the outer side wall of the guide groove is provided with a first outer rotation angle, a second outer rotation angle, a third outer rotation angle and a fourth outer rotation angle, the first inner rotation angle is adapted to the first outer rotation angle, the first inner rotation angle and the first outer rotation angle are staggered, the lowest point of the first inner rotation angle is located on the right side of the lowest point of the first outer rotation angle; the second inner rotation angle is adapted to the second outer rotation angle, the second The inner corner and the second outer corner are staggered, and the highest point of the second inner corner is located on the left side of the highest point of the second outer corner; the third inner corner is adapted to the third outer corner, and the third inner corner and the third outer corner are staggered, and the lowest point of the third inner corner is located on the right side of the lowest point of the third outer corner; the fourth inner corner is adapted to the fourth outer corner, and the fourth inner corner and the fourth outer corner are staggered, and the highest point of the fourth inner corner is located on the left side of the highest point of the fourth outer corner, the third inner corner is used as a first locking position, and the first outer corner is used as a second locking position.

[0013] Furthermore, the limiting sleeve has a through hole for accommodating the driving rod, a constriction for allowing the limiting sleeve to be deformed, and a positioning protrusion for positioning, the positioning protrusion cooperates with the first clamping groove and the second clamping groove, the through hole passes through the limiting sleeve, a step surface is provided in the through hole, a driving part is provided on the driving rod, and the step surface is used to cooperate with the driving part.

[0014] Furthermore, a pull rod is provided on the driving rod to facilitate force application.

[0015] Furthermore, the locking pin has at least one straight edge for preventing the locking pin from rotating in the insertion hole.

[0016] The smart palm-swipe cash register of the present invention can unlock the palmprint recognizer through the unlocking and plugging mechanism, and the palmprint recognizer can be disassembled without the aid of tools, and the palmprint recognizer can also be installed without the aid of tools. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a preferred embodiment of the smart palm-swipe cash register of the present invention.

[0018] Figure 2 It is a top view of the intelligent palm-swipe cash register of the present invention.

[0019] Figure 3 It is a side view of the intelligent palm-swipe cash register of the present invention.

[0020] Figure 4 It is a structural schematic diagram of a palmprint identifier installed on a second display screen through a plug-in mechanism.

[0021] Figure 5 It is a structural schematic diagram that the first display screen is installed on the bracket through the plug-in mechanism.

[0022] Figure 6 It is a structural schematic diagram of a second display screen being installed on a bracket through a plug-in mechanism.

[0023] Figure 7 is a cross-sectional view of the first mounting plate and the connecting frame.

[0024] Figure 8 yes Figure 5 A partial enlarged view of middle A.

[0025] Fig. 9 yes Figure 8 Schematic diagram of the structure after the middle plug-in mechanism is unlocked.

[0026] Fig.10 It is a vertical cross-sectional view of the plug-in mechanism in the mounting hole.

[0027] Fig.11 It is a vertical cross-sectional view of the plug-in mechanism in the mounting hole.

[0028] Fig.12 It is a structural schematic diagram of the locking block and the locking pin.

[0029] Fig.13 It is a schematic diagram of the structure of the locking pin.

[0030] Fig.14 It is a structural schematic diagram of the locking block.

[0031] Fig.15 It is a structural schematic diagram of a limit sleeve.

[0032] Fig.16 It is a structural schematic diagram of the unlocking steps of the plug-in mechanism.

[0033] The meanings of the symbols in the accompanying drawings are:

[0034] first display screen 1, connecting frame 11, second display screen 2, palm print identifier 3, U-shaped mounting frame 31, U-shaped frame body 311, baffle 312, connecting plate 32, bracket 4, first mounting plate 41, second mounting plate 42, plate body 411, cover plate 412, plug hole 50, mounting hole 51, first accommodating hole 511, second accommodating hole 512, through hole 513, first clamping groove 514, second clamping groove 515, plug-in mechanism 6, drive rod 61, drive unit 611, pull rod 612, limiting sleeve 62, through hole 621, shrinkage 622, positioning protrusion 623, step surface 624, locking pin 63, straight edge 631, supporting portion 632, locking block 64, guide groove 641, first inner corner 6411, second inner corner 6412, third inner corner 6413, fourth inner corner 6414, first outer corner 6415, second outer corner 6416, third outer corner 6417, fourth outer corner 6418, limiting member 65, return spring 66. DETAILED DESCRIPTION

[0035] The present invention will be further described below in conjunction with the accompanying drawings.

[0036] like Figures 1 to 6 As shown, a preferred embodiment of the smart palm swiping cash register of the present invention includes a first display screen 1 and a second display screen 2 for display, a palm print identifier 3 for identifying palm prints, and a bracket 4 for installing the first display screen 1 and the second display screen 2. The first display screen 1 and the second display screen 2 are both installed on the bracket 4 through a plug-in mechanism 6. The first display screen 1 and the second display screen 2 are respectively located on both sides of the bracket 4. The first display screen 1 is used for the cashier to watch, and the second display screen 2 is used for the consumer to watch. The palm print identifier 3 is installed on the second display screen 2 through the plug-in mechanism 6.

[0037] The first display screen 1, the second display screen 2 and the palmprint identifier 3 are all provided with a socket 50, and the plug-in mechanism 6 has a latch, which is inserted into the socket 50. When the plug-in mechanism 6 is unlocked, the latch retracts from the socket 50, and when the plug-in mechanism 6 is locked, part of the latch is located in the socket 50.

[0038] The bracket 4 is provided with a first mounting plate 41 and a second mounting plate 42, and a UU-shaped mounting frame 31 is installed on the second display screen 2. The first mounting plate 41 is located at the front side of the bracket 4, that is, corresponding to the first display screen 1. There are two first mounting plates 41, which are arranged side by side and spaced apart. Each first mounting plate 41 is provided with a mounting hole 51, and the mounting hole 51 is used to install the plug-in mechanism 6. The second mounting plate 42 is located at the rear side of the bracket 4, that is, corresponding to the second display screen 2. There are two second mounting plates 42, which are arranged side by side and spaced apart. Each second mounting plate is provided with a mounting hole 51, and the mounting hole 51 is used to install the plug-in mechanism 6. The first display screen 1 and the second display screen 2 are both installed with a connecting frame 11 through a damping shaft, so that the angles of the first display screen 1 and the second display screen 2 can be adjusted under the action of external force, which is more convenient for users to watch; the connecting frame 11 is provided with a plug-in hole 50, and the locking pin 63 of the plug-in mechanism 6 is arranged in the plug-in hole 50. In other embodiments, the jack 50 may be directly provided on the housings of the first display screen 1 and the second display screen 2. The UU-shaped mounting frame 31 is provided with a mounting hole 51, and the mounting hole 51 is used to install the plug-in mechanism 6. The palmprint identifier 3 is provided with a connecting plate 32, and the connecting plate 32 is provided with a jack 50; the UU-shaped mounting frame 31 can limit the left and right directions of the connecting plate 32, ensuring that it will not be removed horizontally from the U-shaped mounting frame, and can only be removed by unlocking the plug-in mechanism 6.

[0039] Combination Figure 7 It can be seen that the mounting hole 51 includes a first accommodating hole 511, a second accommodating hole 512 and a through hole 513. The first accommodating hole 511 and the second accommodating hole 512 are connected. The first accommodating hole 511 and the second accommodating hole 512 are both used to install the plug-in mechanism 6. The through hole 513 is used for the plug-in mechanism 6 to extend out of the first mounting plate 41 and insert into the plug hole 50. The through hole 513 is arranged at the bottom of the first accommodating hole 511 and penetrates the first mounting plate 41 and the second mounting plate 42. The width of the first accommodating hole 511 is greater than the width of the through hole 513, which can ensure that the lock pin 63 of the plug-in mechanism 6 can extend out of the first mounting plate 41 and the second mounting plate 42. The first mounting plate 41 and the second mounting plate 42 both include a plate body 411 and a cover plate 412 arranged on the plate body 411. The first accommodating hole 511 and the through hole 513 are both arranged on the plate body 411. The second accommodating hole 512 is formed by the combination of the plate body 411 and the cover plate 412. The UU-shaped mounting frame 31 has a UU-shaped frame body 311 and a baffle 312 arranged on the UU-shaped frame body 311 , the first accommodating hole 511 and the through hole 513 are both arranged on the UU-shaped frame body 311 , and the second accommodating hole 512 is formed by the combination of the UU-shaped frame body 311 and the baffle 312 .

[0040] like Figures 8 to 13As shown, the plug-in mechanism 6 includes a driving rod 61, a limiting sleeve 62, a locking pin 63, a locking block 64, a limiting member 65 and a reset spring 66. The locking pin 63 is used to be inserted into the socket 50 to lock the first display screen 1, the second display screen 2 and the palm print identifier 3. The locking pin 63 is adapted to the socket 50, that is, the locking pin 63 is consistent in shape with the socket 50. The locking pin 63 has at least one straight edge 631 to ensure that the locking pin 63 will not rotate in the socket 50, and ensure that the first display screen 1, the second display screen 2 and the palm print identifier 3 will not rotate together with the locking pin due to gravity, thereby ensuring the stability of the connection; the end of the locking pin 63 close to the limiting sleeve 62 is located in the first accommodating hole 511, and the locking pin 63 has a supporting portion 632, which is circular, and one end of the reset spring 66 is supported on the supporting portion 632. The locking block 64 is connected to the locking pin 63 so that the locking block 64 and the locking pin 63 move synchronously. The locking block 64 is located in the second receiving hole 512. The limiting member 65 cooperates with the locking block 64 to limit the position of the locking pin 63. The locking block 64 has a first locking position and a second locking position. The limiting member 65 is a Z-shaped rod. One end of the limiting member 65 is slidably arranged on the locking block 64. The limiting member 65 can reciprocate between the first locking position and the second locking position. The other end of the limiting member 65 is installed on the cover plate 412 of the bracket 4 or the baffle plate 312 of the UU-shaped mounting frame 31. One end of the reset spring 66 abuts against the locking pin 63, and the other end of the reset spring 66 abuts against the bottom of the first receiving hole 511. The reset spring 66 is sleeved on the locking pin 63. The reset spring 66 is used to reset the locking pin 63. When the limiting member 65 is located at the first locking position of the locking block 64, the locking pin 63 is in a retracted state, that is, the plug-in mechanism 6 is in an unlocked state. When the limiting member 65 is located at the second locking position of the locking block 64, the locking pin 63 is in an extended state, that is, the plug-in mechanism 6 is in a locked state. The limiting sleeve 62 is located in the first accommodating hole 511, and the first accommodating hole 511 is provided with a first clamping groove 514 and a second clamping groove 515. The limiting sleeve 62 is used to limit the position of the locking pin 63, and the limiting sleeve 62 is clamped in the first clamping groove 514 or the second clamping groove 515; when the limiting sleeve 62 is clamped in the first clamping groove 514, the limiting sleeve 62 is in the first clamping position, and when the limiting sleeve 62 is clamped in the second clamping groove 515; the limiting sleeve 62 is in the second clamping position, and the limiting sleeve 62 can switch back and forth between the first clamping position and the second clamping position, and the limiting sleeve 62 is used to limit the movable space of the locking pin 63.When the limiting sleeve 62 is located at the first engaging position, the limiting sleeve 62 limits the locking pin 63, so that the locking pin 63 can only be in the extended state; when the limiting sleeve 62 is located at the second engaging position, the limiting sleeve 62 does not limit the locking pin 63, that is, the locking pin 63 can switch between the extended state and the retracted state. The driving rod 61 is used to pull the limiting sleeve 62 or press the locking pin 63. When the driving rod 61 is used to pull the limiting sleeve 62, it is used to change the position of the limiting sleeve 62. When the driving rod 61 presses the locking pin 63, it is used to change the state of the locking pin 63.

[0041] When the plug-in mechanism 6 needs to be unlocked, the driving rod 61 is first used to pull the limit sleeve 62 outward from the first engaging position to the second engaging position, thereby providing movable space for the lock pin 63, and then the driving rod 61 is used to press the lock pin 63, and the lock pin 63 is reset under the action of the reset spring 66, and at the same time, the limit member 65 is moved from the second locking position to the first locking position, so that the lock pin 63 is in a retracted state, so that the first display screen 1 and the second display screen 2 can be removed from the first mounting plate 41 and the second mounting plate 42. Unlocking requires first pulling the driving rod 61 outward, and then pressing the driving rod 61 inward, which can avoid misunderstanding of the lock plug-in mechanism 6.

[0042] When it is necessary to lock the plug-in mechanism 6, the driving rod 61 is used to press the locking pin 63, so that the limiting member 65 moves from the first locking position to the second locking position, so that the locking pin 63 is in an extended state, and then the limiting sleeve 62 is pressed to move the limiting sleeve 62 from the second engaging position to the first engaging position, so that the limiting sleeve 62 restricts the locking pin 63, ensuring that the locking pin 63 will not change from the extended state to the retracted state even if it is accidentally pressed by the driving rod 61, thereby avoiding accidental touch.

[0043] like Fig.13 and Fig.14 As shown, the locking block 64 is provided with a guide groove 641, and the guide groove 641 has a first locking position and a second locking position. The limiting member 65 circulates in the guide groove 641, thereby switching back and forth between the first locking position and the second locking position, thereby limiting the position of the locking block 64 to achieve the position of the locking pin 63.

[0044] The guide groove 641 is generally heart-shaped and has an inner side wall and an outer side wall. The side wall close to the center of the locking block 64 is the inner side wall, and the side wall away from the center of the locking block 64 is the outer side wall. The inner side wall of the guide groove 641 is provided with a first inner corner 6411, a second inner corner 6412, a third inner corner 6413 and a fourth inner corner 6414. The outer side wall of the guide groove 641 is provided with a first outer corner 6415, a second outer corner 6416, a third outer corner 6417 and a fourth outer corner 6418. The first inner corner 6411 is matched with the first outer corner 6415, the first inner corner 6411 and the first outer corner 6415 are staggered, and the lowest point of the first inner corner 6411 is located on the right side of the lowest point of the first outer corner 6415; the second inner corner 6412 is matched with the second outer corner 6416, the second inner corner 6412 and the second outer corner 6416 are staggered, and the highest point of the second inner corner 6412 is located on the left side of the highest point of the second outer corner 6416; The third inner corner 6413 is matched with the third outer corner 6417, and the third inner corner 6413 and the third outer corner 6417 are staggered, and the lowest point of the third inner corner 6413 is located on the right side of the lowest point of the third outer corner 6417; the fourth inner corner 6414 is matched with the fourth outer corner 6418, and the fourth inner corner 6414 and the fourth outer corner 6418 are staggered, and the highest point of the fourth inner corner 6414 is located on the left side of the highest point of the fourth outer corner 6418. The third inner corner 6413 is used as the first locking position. When the limiting member 65 is located at the third inner corner 6413, the locking block 64 is in the unlocking position, that is, the locking pin 63 is in the extended state. The first outer corner 6415 is used as the second locking position. When the limiter 65 is at the first outer corner 6415, the locking block 64 is in the locking position, that is, the lock pin 63 is in the retracted state. Through the staggered setting of each corner, the limiter 65 always moves clockwise in the guide groove 641; when the lock pin 63 is in the retracted state, the limiter 65 is at the second locking position. At this time, the drive rod 61 presses the lock pin 63 once, and the limiter 65 slides rightward from the second locking position to the first locking position, so that the lock pin 63 changes from the retracted state to the extended state; when the lock pin 63 is in the extended state, the limiter 65 is at the first locking position. At this time, the drive rod 61 presses the lock pin 63 once, and the limiter 65 slides leftward from the first locking position to the second locking position, so that the lock pin 63 changes from the extended state to the retracted state.

[0045] like Fig.15As shown, the limiting sleeve 62 has a through hole 621 for accommodating the driving rod 61, a constriction 622 for allowing the limiting sleeve 62 to deform, and a positioning protrusion 623 for positioning. The positioning protrusion 623 is arranged on the outer side wall of the limiting sleeve 62, and the positioning protrusion 623 cooperates with the first clamping groove 514 and the second clamping groove 515. The constriction 622 is formed by one end of the limiting sleeve 62 being concave toward the other end, and the positioning protrusion 623 is located at the end provided with the constriction 622, so that when the limiting sleeve 62 moves in the first receiving hole 511, the end of the limiting sleeve 62 provided with the constriction 622 can be deformed under the pressure of the positioning protrusion 623 in the first receiving hole 511, so that the limiting sleeve 62 can be easily separated from the first clamping groove 514 and the second clamping groove 515. The driving rod 61 is provided with a driving portion 611, and the through hole 621 passes through the limiting sleeve 62, so that one end of the driving rod 61 can extend out of the limiting sleeve 62 and abut against the locking pin 63, and the other end of the driving rod 61 can extend out of the limiting sleeve 62 and extend out of the limiting sleeve 62 for people to pull or press, and a step surface 624 is provided in the through hole 621, and the step surface 624 is used to abut against the driving portion 611 so that the driving portion 611 drives the limiting sleeve 62. The step surface 624 can ensure that the driving rod 61 will not be separated from the limiting sleeve 62 from the end away from the locking pin 63.

[0046] The driving rod 61 is also provided with a pull rod 612 for applying force, so that the driving rod 61 can be pulled by the pull rod 612 .

[0047] like Fig.16 As shown, when the first display screen 1, the second display screen 2 or the palm print identifier 3 needs to be disassembled, the driving rod 61 is pulled outward, and the driving rod 61 drives the limiting sleeve 62 to move from the first engaging position to the second engaging position, thereby providing a movable space for the lock pin 63, and then the driving rod 61 is pressed inward, so that the driving rod 61 presses the lock pin 63, and the lock pin 63 is reset under the action of the reset spring 66, and at the same time, the limiting member 65 is moved from the second locking position to the first locking position under the action of the guide groove 641, so that the lock pin 63 is in a retracted state, so that the first display screen 1, the second display screen 2 or the palm print identifier 3 can be removed from the first mounting plate 41, the second mounting plate 42 and the second display screen 2. To unlock, the driving rod 61 needs to be pulled outward first, and then pressed inward, so as to avoid misunderstanding of the lock plug mechanism 6.

[0048] When the first display screen 1, the second display screen 2 or the palm print identifier 3 needs to be installed, first align the jack 50 on the connecting frame 11 with the through hole 513, and then press the driving rod 61 so that the driving rod 61 presses the locking pin 63. The limiting member 65 moves from the first locking position to the second locking position under the action of the guide groove 641, so that the locking pin 63 is in an extended state. At this time, the first display screen 1, the second display screen 2 or the palm print identifier 3 are installed. In order to ensure that the state of the locking pin 63 is changed by accidental touch, the limiting sleeve 62 is pressed again to move the limiting sleeve 62 from the second engaging position to the first engaging position, so that the limiting sleeve 62 limits the locking pin 63, ensuring that the locking pin 63 will not change from the extended state to the retracted state even if it is accidentally pressed by the driving rod 61.

[0049] The installation and removal process can be completed without the aid of tools, and can also avoid accidentally changing the state of the locking pin 63, thereby ensuring the stability of the connection.

[0050] The above are only implementation modes of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure made using the contents of the present invention's specification and drawings, directly or indirectly used in other related technical fields, are also within the patent protection scope of the present invention.

Claims

1. An intelligent palm-swipe cash register, characterized in that: The invention comprises a first display screen and a second display screen for displaying, a palmprint recognizer for recognizing palmprints, and a bracket for installing the first display screen and the second display screen, wherein the palmprint recognizer is connected to the second display screen through a plug-in mechanism, a U-shaped mounting frame is mounted on the second display screen, and a mounting hole for mounting the plug-in mechanism is arranged on the U-shaped mounting frame, and a connecting plate is arranged on the connecting plate, and a plug-in hole adapted to the plug-in mechanism is arranged; the plug-in mechanism has a bolt, and the bolt is inserted into the plug-in hole, and the bolt is retracted from the plug-in hole when the plug-in mechanism is unlocked, and part of the bolt is located in the plug-in hole when the plug-in mechanism is locked.

2. The smart palm-swipe cash register according to claim 1, characterized in that: The first display screen and the second display screen are mounted on a bracket via a plug-in mechanism, and the bracket is provided with a first mounting plate and a second mounting plate. There are two first mounting plates and a second mounting plate, and each of the first mounting plates and the second mounting plate is provided with a mounting hole for installing the plug-in mechanism. The first display screen and the second display screen are both provided with a socket adapted to the plug-in mechanism.

3. The smart palm-swipe cash register according to claim 1 or 2, characterized in that: The plug-in mechanism includes a locking pin for inserting into the socket, a locking block and a limiting member for cooperating with each other to achieve limiting, a reset spring for resetting the locking pin, a limiting sleeve for limiting the moving space of the locking pin, and a driving rod for pulling the limiting sleeve or pressing the locking pin, the locking block is connected to the locking pin, the locking block has a first locking position and a second locking position, one end of the limiting member is slidably arranged on the locking block, the limiting member can reciprocate between the first locking position and the second locking position, the other end of the limiting member is installed on the bracket or the U-shaped mounting frame, the mounting hole is provided with a first clamping groove and a second clamping groove for clamping the limiting sleeve, and the limiting sleeve can reciprocate in the first clamping groove and the second clamping groove.

4. The smart palm-swipe cash register according to claim 3, characterized in that: The mounting hole includes a first accommodating hole, a second accommodating hole and a through hole. The first accommodating hole and the second accommodating hole are connected. The first accommodating hole is used to install a locking pin and a limiting sleeve. The reset spring is supported on the bottom of the first accommodating hole and the locking pin. The through hole is used for allowing the plug pin of the plug-in mechanism to extend out and be inserted into the plug hole.

5. The smart palm-swipe cash register according to claim 4, characterized in that: The first mounting plate and the second mounting plate each include a plate body and a cover plate arranged on the plate body, the first accommodating hole and the through-hole are both arranged on the plate body, and the second accommodating hole is formed by a combination of the plate body and the cover plate, the U-shaped mounting frame has a U-shaped frame body and a baffle plate arranged on the U-shaped frame body, the first accommodating hole and the through-hole are both arranged on the U-shaped frame body, and the second accommodating hole is formed by a combination of the U-shaped frame body and the baffle plate.

6. The smart palm-swipe cash register according to claim 3, characterized in that: The locking pin has a supporting portion, and one end of the return spring is supported on the supporting portion.

7. The smart palm-swipe cash register according to claim 3, characterized in that: The locking block is provided with a guide groove, the guide groove having a first locking position and a second locking position, the inner side wall of the guide groove is provided with a first inner rotation angle, a second inner rotation angle, a third inner rotation angle and a fourth inner rotation angle, the outer side wall of the guide groove is provided with a first outer rotation angle, a second outer rotation angle, a third outer rotation angle and a fourth outer rotation angle, the first inner rotation angle is adapted to the first outer rotation angle, the first inner rotation angle and the first outer rotation angle are staggered, the lowest point of the first inner rotation angle is located on the right side of the lowest point of the first outer rotation angle; the second inner rotation angle is adapted to the second outer rotation angle, the second inner rotation angle The third inner corner is adapted to the third outer corner, and the third inner corner and the third outer corner are offset, and the lowest point of the third inner corner is located on the right side of the lowest point of the third outer corner; the fourth inner corner is adapted to the fourth outer corner, and the fourth inner corner and the fourth outer corner are offset, and the highest point of the fourth inner corner is located on the left side of the highest point of the fourth outer corner, the third inner corner is used as a first locking position, and the first outer corner is used as a second locking position.

8. The smart palm-swipe cash register as claimed in claim 3, characterized in that: The limiting sleeve has a through hole for accommodating the driving rod, a constriction for allowing the limiting sleeve to be deformed, and a positioning protrusion for positioning. The positioning protrusion cooperates with the first clamping groove and the second clamping groove. The through hole passes through the limiting sleeve. A step surface is provided in the through hole. A driving part is provided on the driving rod, and the step surface is used to cooperate with the driving part.

9. The smart palm-swipe cash register according to claim 3, characterized in that: The driving rod is also provided with a pull rod for facilitating application of force.

10. The smart palm-swipe cash register according to claim 3, characterized in that: The locking pin has at least one straight edge for preventing the locking pin from rotating in the insertion hole.

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