Portable charging base for POS (Point Of Sale) machine

Abstract

The utility model discloses a POS machine convenient charging pedestal, which comprises a DC box and a plurality of charging pedestal bodies, each charging pedestal body comprises an upper shell, a lower shell, a support and a host power connection module, the support is sleeved on the inner side of the upper shell, the lower shell covers the upper shell, the support is provided with an inner cavity matched with a POS machine, the bottom of the support is provided with a charging hole matched with a charging contact of the POS machine, and the host power connection module is connected with the charging hole. The host power connection module is installed between the upper shell and the lower shell, the upper power connection end of the host power connection module is exposed in the charging hole, the left power connection end of the host power connection module penetrates through the left end of the lower shell and is electrically connected with the right power connection end of the host power connection module in the left charging base, and the right power connection end of the host power connection module is exposed on the right surface of the upper shell. The DC box is electrically connected with the left power connection end of the host power connection module in the right charging base, and the DC box is electrically connected with the right power connection end of the host power connection module in the rightmost charging base. According to the utility model, the charging experience of a user under the normal operation visual angle of the POS machine is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of POS machines, and in particular to a convenient charging base for POS machines. Background Art

[0002] Currently, POS terminals are usually charged by fixed charging or a single charging base. The traditional charging base solution has the following problems:

[0003] 1. The mold opening cost of fixed joint charging is relatively high, and the space requirement is large. The space required for charging one POS machine and charging multiple POS machines is the same;

[0004] 2. For a separate charging base solution, when multiple POS machines need to be charged at the same time, multiple connecting cables are required, which is inconvenient to place and unsightly.

[0005] The Chinese utility model with publication number CN209419267U discloses a dual charging base for a POS machine and a battery, including a base body, POS machine charging contacts, battery charging contacts, and a charging interface; the base body is provided with a battery receiving groove, and the battery charging contacts are provided on the groove wall of the battery receiving groove; the base body is also provided with the POS machine charging contacts; the side of the base body is also provided with the charging interface. The base body is also provided with a first receiving groove for accommodating the wristband buckle device of the POS machine, and a second receiving groove for accommodating the wristband strap device of the POS machine. This utility model is designed to meet the charging requirements of the terminal and the battery. It also belongs to the method of charging with a single base, and there is also the problem that when charging multiple POS machines at the same time, multiple connecting wires are required, which is inconvenient to place and aesthetically pleasing.

[0006] The Chinese invention with publication number CN115762012A provides a split-type POS machine and a charging method thereof, including: a POS machine body and a charging base, wherein the charging base is respectively provided with a first conductive column and a second conductive column, and through holes corresponding to the first conductive column and the second conductive column; a circuit board is provided in the POS machine body, a first contact point connected to the circuit board is provided at the bottom, a display screen and a button are provided on one side of the POS machine body, and a second contact point connected to the circuit board is provided on the other side; the first contact point of the POS machine body is contacted with the first conductive column of the charging base, or the second contact point of the POS machine body is contacted with the second conductive column of the charging base to charge the POS machine body. The invention adopts multiple charging methods such as horizontal or vertical charging, which solves the technical problem of a single charging method, but there is a problem that when charging multiple POS machines at the same time, multiple connecting wires are required, which is inconvenient to place and aesthetically pleasing. Utility Model Content

[0007] In view of this, the purpose of the present invention is to provide a convenient charging base for a POS machine to enhance the charging experience of users under the normal operating perspective of the POS machine.

[0008] In order to achieve the above technical objectives, the technical solution adopted by the utility model is:

[0009] A convenient charging base for a POS machine comprises: a DC box and a plurality of charging bases, wherein the plurality of charging bases are detachably connected to each other, each of the charging bases comprises an upper shell, a lower shell, a bracket and a host power connection module, the bracket is sleeved on the inner side of the upper shell, the lower shell covers the upper shell, an inner cavity adapted to the POS machine is provided in the bracket, a charging hole matched to the charging contact of the POS machine is provided at the bottom of the bracket, the host power connection module is installed between the upper shell and the lower shell, an upper power connection end of the host power connection module is exposed in the charging hole for contacting and connecting with the charging contact of the POS machine, a left power connection end of the host power connection module passes through the left end of the lower shell, and is electrically connected to a right power connection end of the host power connection module in the left charging base, a right power connection end of the host power connection module is exposed on the right surface of the upper shell, and is electrically connected to the left power connection end of the host power connection module in the right charging base, and the DC box is electrically connected to the right power connection end of the host power connection module in the rightmost charging base.

[0010] Furthermore, the host power connection module includes a PCB board, a first PIN pin, a second PIN pin, a power cord and a charging adapter board, the first PIN pin is installed at the upper left end of the PCB board and inserted into the charging hole for contacting and connecting with the charging contact of the POS machine, the second PIN pin is installed at the lower left end of the PCB board and passes through the left end of the lower shell; one end of the power cord is connected to the PCB board, and the other end of the power cord is connected to the charging adapter board, and the right end of the charging adapter board is provided with a through hole for plugging in the second PIN pin or DC box in the right host power connection module.

[0011] Furthermore, a typ-c interface is provided at the lower right end of the PCB board.

[0012] Furthermore, the DC box includes a third PIN pin, a charging board, a DC interface, an upper box and a lower box. The upper box and the lower box are covered, and the third PIN pin, the charging board and the DC interface are all installed between the upper box and the lower box. The third PIN pin is inserted into the through hole of the charging adapter board in the rightmost host power connection module. The charging board is electrically connected to the third PIN pin and the DC interface respectively, and the DC interface is installed on the charging board.

[0013] Furthermore, a groove is provided at the left end of the lower shell, and a protrusion adapted to the groove is provided at the right end of the upper shell, and the protrusion of the upper shell in the left charging base is socketed with the groove of the lower shell in the right charging base; a groove is provided at the left end of the lower box, and the groove of the lower box is socketed with the protrusion of the upper shell in the rightmost charging base.

[0014] Furthermore, male buckles are provided on the front and rear sides of the groove, and female buckles matching with the male buckles are provided on the front and rear sides of the protrusion. When the protrusion of the upper shell in the left charging base is socketed with the groove of the lower shell in the right charging base, or when the groove of the lower box is socketed with the protrusion of the upper shell in the rightmost charging base, the male buckle and the female buckle are snap-connected.

[0015] Furthermore, a first limit block and a second limit block are provided on the right side of the groove, and a connecting hole for inserting a second PIN needle is provided on the first limit block. A first limit groove and a second limit groove are provided on the right end of the protrusion, the through hole of the charging adapter plate is connected with the first limit groove, and the typ-c interface is connected with the second limit groove. The first limit block is arranged corresponding to the first limit groove, and the second limit block is arranged corresponding to the second limit groove. When the protrusion of the upper shell in the left charging base is socketed with the groove of the lower shell in the right charging base or the groove of the lower box is socketed with the protrusion of the upper shell in the rightmost charging base, the first limit block is connected to the first limit groove and the second limit block is connected to the second limit groove for limiting.

[0016] Furthermore, a plurality of foot pads are provided at the bottom of the lower shell and the lower box.

[0017] Furthermore, the bracket is inclined at an angle to the horizontal direction, and the range of the inclination angle is between 60° and 80°.

[0018] Furthermore, the charging base is connected to the POS machine by plugging and unplugging.

[0019] By adopting the above technical solution, the utility model has the following beneficial effects compared with the prior art:

[0020] The utility model makes the plug-in buckle compatible with the charging base. Through the plug-in connection between the charging base and the POS machine, the user can choose a single charger or multiple chargers according to the needs, realizing flexible switching of charging one or multiple devices.

[0021] 1. The bracket is inclined at an angle to the horizontal direction, and the POS machine slides in along the inclined angle of the bracket and slides to the bottom of the bracket, so that the charging contact of the POS machine is just located at the charging hole position of the bracket;

[0022] 2. Design a first PIN with matching slope on the charging base. Insert the first PIN into the charging hole of the bracket so that the first PIN is in contact with the charging contact of the POS machine. The first PIN, PCB board and typ-c interface make precise contact, and a single POS machine can be charged. The charging process is: POS machine → first PIN → PCB board → typ-c interface → typ-c charging cable → socket;

[0023] 3. Multiple charging bases are detachably connected, and the protrusion of the upper shell of the left charging base and the groove of the lower shell of the right charging base are sleeved, and the male buckles arranged at the front and rear sides of the groove of the lower shell and the female buckles arranged at the front and rear sides of the protrusion of the upper shell are snap-connected, and then the first limiting block is connected to the first limiting groove and the second limiting block is connected to the second limiting groove for limiting, so as to realize the close connection between multiple charging bases; a second PIN pin is provided at the lower left end of the PCB board, a power cord and a charging adapter board are provided at the upper right end, and a third PIN pin, a charging board and a DC interface are provided on the rightmost DC box to realize synchronous charging of multiple units after plugging in. Assuming that the two When two POS machines are charged together, the two POS machines are inserted into the brackets of the two charging bases. The charging process of the first POS machine (on the right) is: POS machine → first PIN pin → PCB board → power cord → charging adapter board → third PIN pin → charging small board → DC interface → DC charging cable → socket; the charging process of the second POS machine (on the left) is: POS machine → first PIN pin → PCB board → power cord → charging adapter board → second PIN pin in the right charging base → PCB board in the right charging base → power cord in the right charging base → charging adapter board in the right charging base → third PIN pin → charging small board → DC interface → DC charging cable → socket;

[0024] The POS machine slides in through the tilt angle of the bracket in the charging base and contacts the first PIN pin. When the POS machine is charging, it can also maintain a normal operating angle, which is convenient for use and operation. The host power connection module is designed by a PCB board, a first PIN pin, a second PIN pin, a power cord and a charging adapter board to realize single-unit charging and multi-unit conversion. The male buckle slides into the female buckle to achieve a tight fit. When it needs to be separated, just pull the charging base back to disengage. Design a DC interface for unified charging in the joint charging state to ensure compatibility between different charging bases. Users can replace or add host power connection modules at any time as needed. The user can quickly access the charging base under the normal operating angle of the POS machine, and the design goal of convenient and easy to take and put, and the single charging and multi-charging states can be quickly split and switched, which greatly improves the user experience and convenience when using the charging base, and also eliminates the space limitations of fixed joint charging and the messy way of multiple connecting lines, making the POS machine charging more flexible, neat and beautiful. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 The utility model is a schematic diagram of the overall structure of a convenient charging base for a POS machine.

[0027] Figure 2 This is one of the three-dimensional diagrams of the charging base provided by the utility model.

[0028] Figure 3 This is the second stereoscopic view of the charging base provided by the utility model.

[0029] Figure 4 It is a structural schematic diagram of the upper shell provided by the utility model.

[0030] Figure 5 It is a structural schematic diagram of the lower shell provided by the utility model.

[0031] Figure 6 It is a three-dimensional diagram of the bracket provided by the utility model.

[0032] Figure 7 It is a front view of the bracket provided by the utility model.

[0033] Figure 8 It is a structural schematic diagram of a host power connection module provided by the utility model.

[0034] Fig. 9 It is a structural schematic diagram of a DC box provided by the utility model.

[0035] Fig.10 This is a connection diagram of the third PIN needle, the charging board and the DC interface provided by the utility model.

[0036] Fig.11 It is a structural schematic diagram of a POS machine provided by the utility model.

[0037] Fig.12 The utility model is a schematic diagram of the structure of a POS machine and a charging base for charging in cooperation with each other.

[0038] Description of the numbers in the figure:

[0039] POS machine convenient charging base 100, DC box 1, third PIN needle 11, charging small board 12, DC interface 13, upper box 14, lower box 15, charging base 2, upper shell 21, protrusion 211, female buckle 212, first limiting groove 213, second limiting groove 214, lower shell 22, groove 221, male buckle 222, first limiting block 223, second limiting block 224, connecting hole 225, foot pad 226, bracket 23, inner cavity 231, charging hole 232, host power connection module 24, PCB board 241, first PIN needle 242, second PIN needle 243, power cord 244, charging adapter board 245, typ-c interface 246, through hole 247, POS machine 200, charging contact 201. DETAILED DESCRIPTION

[0040] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is particularly noted that the following embodiments are only used to illustrate the present invention, but do not limit the scope of the present invention. Similarly, the following embodiments are only partial embodiments of the present invention rather than all embodiments. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] See also Figure 1-Figure 12The utility model provides a convenient charging base 100 for a POS machine 200, comprising: a DC box 1 and a plurality of charging bases 2, wherein the plurality of charging bases 2 are detachably connected, each of the charging bases 2 comprising an upper shell 21, a lower shell 22, a bracket 23 and a host power connection module 24, wherein the bracket 23 is sleeved on the inner side of the upper shell 21, the lower shell 22 covers the upper shell 21, the bracket 23 is provided with an inner cavity 231 adapted to the POS machine 200, the bottom of the bracket 23 is provided with a charging hole 232 matched with the charging contact 201 of the POS machine 200, and the host power connection module 24 is installed Between the upper shell 21 and the lower shell 22, the upper power connection end of the host power connection module 24 is exposed in the charging hole 232, and is used to contact and connect with the charging contact 201 of the POS machine 200. The left power connection end of the host power connection module 24 passes through the left end of the lower shell 22, and is electrically connected to the right power connection end of the host power connection module 24 in the left charging base 2. The right power connection end of the host power connection module 24 is exposed on the right surface of the upper shell 21, and is electrically connected to the left power connection end of the host power connection module 24 in the right charging base 2. The DC box 1 is electrically connected to the right power connection end of the host power connection module 24 in the rightmost charging base 2. The plug-in buckle is compatible with the charging base 2. Through the plug-in connection between the charging base 2 and the POS machine 200, the user can choose a single charger or multiple chargers as needed, and realize flexible switching between charging one or multiple chargers. The user can quickly access the charging base 2 under the normal operating angle of the POS machine 200, and the design goal of convenient and easy to take and put, and the single charging and multi-charging states can be quickly separated and switched, which greatly improves the user experience and convenience when using the charging base 2, and also eliminates the space limitations of fixed charging and the messy way of multiple connecting lines, making the charging of the POS machine 200 more flexible, neat and beautiful.

[0042] In this embodiment, the host power connection module 24 includes a PCB board 241, a first PIN pin 242, a second PIN pin 243, a power cord 244 and a charging adapter board 245. The first PIN pin 242 is installed at the upper left end of the PCB board 241 and inserted into the charging hole 232 for contacting and connecting with the charging contact 201 of the POS machine 200. The second PIN pin 243 is installed at the lower left end of the PCB board 241 and passes through the left end of the lower shell 22. One end of the power cord 244 is connected to the PCB board 241, and the other end of the power cord 244 is connected to the charging adapter board 245. The right end of the charging adapter board 245 is provided with a through hole 247 for inserting the second PIN pin 243 in the right host power connection module 24 or the DC box 1. Provide the accessories required for normal charging to ensure the normal charging of the charging base 2.

[0043] In this embodiment, a typ-c interface 246 is provided at the lower right end of the PCB board 241. When a single unit is charged, the typ-c charging cable can be connected through the typ-c interface 246 for charging.

[0044] In this embodiment, the DC box 1 includes a third PIN pin 11, a charging board 12, a DC interface 13, an upper box 14 and a lower box 15, the upper box 14 and the lower box 15 are covered, the third PIN pin 11, the charging board 12 and the DC interface 13 are installed between the upper box 14 and the lower box 15, the third PIN pin 11 is inserted into the through hole 247 of the charging adapter board 245 in the rightmost host power connection module 24, the charging board 12 is electrically connected to the third PIN pin 11 and the DC interface 13 respectively, and the DC interface 13 is installed on the charging board 12. The DC interface 13 for unified charging in the joint charging state is designed to ensure compatibility between different charging bases 2.

[0045] In this embodiment, the left end of the lower shell 22 is provided with a groove 221, the right end of the upper shell 21 is provided with a convex block 211 adapted to the groove 221, the convex block 211 of the upper shell 21 in the left charging base 2 is sleeved with the groove 221 of the lower shell 22 in the right charging base 2; the left end of the lower box 15 is provided with a groove 221, and the groove 221 of the lower box 15 is sleeved with the convex block 211 of the upper shell 21 in the rightmost charging base 2, so that the charging bases 2 can be better in contact with each other.

[0046] In this embodiment, male buckles 222 are provided on the front and rear sides of the groove 221, and female buckles 212 matched with the male buckles 222 are provided on the front and rear sides of the protrusions 211. When the protrusion 211 of the upper shell 21 of the left charging base 2 is sleeved with the groove 221 of the lower shell 22 of the right charging base 2, or when the groove 221 of the lower box 15 is sleeved with the protrusion 211 of the upper shell 21 of the rightmost charging base 2, the male buckle 222 and the female buckle 212 are snap-fitted. The male buckle 222 is slid into the female buckle 212 to achieve tight fit, and the design structure is simple and easy to operate.

[0047] In this embodiment, a first limiting block 223 and a second limiting block 224 are provided on the right side of the groove 221, and a connecting hole 225 for inserting the second PIN needle 243 is provided on the first limiting block 223. The right end of the protrusion 211 is provided with a first limiting groove 213 and a second limiting groove 214. The through hole 247 of the charging adapter plate 245 is connected to the first limiting groove 213, and the typ-c interface 246 is connected to the second limiting groove 214. The first limiting block 223 is connected to the first The limiting groove 213 is provided correspondingly, and the second limiting block 224 is provided correspondingly to the second limiting groove 214. When the protrusion 211 of the upper shell 21 of the left charging base 2 is sleeved with the groove 221 of the lower shell 22 of the right charging base 2 or when the groove 221 of the lower box 15 is sleeved with the protrusion 211 of the upper shell 21 of the rightmost charging base 2, the first limiting block 223 is connected to the first limiting groove 213 and the second limiting block 224 is connected to the second limiting groove 214 for limiting. This makes the connection between the charging bases 2 more tightly matched.

[0048] In this embodiment, a plurality of foot pads 226 are provided at the bottom of the lower shell 22 and the lower box 15, which can increase the friction between the bottom of the lower shell 22 and the contact surface to avoid sliding.

[0049] In this embodiment, the bracket 23 is inclined at an angle a to the horizontal direction, and the POS machine 200 slides along the inclined angle of the bracket 23 and slides to the bottom of the bracket 23, so that the charging contact 201 of the POS machine 200 is located at the charging hole 232 of the bracket 23; the inclination angle a ranges from 60° to 80°, and optimally, the inclination angle a is 70°, which allows the user to insert it more smoothly.

[0050] In this embodiment, the charging base 2 and the POS machine 200 are connected by plugging and unplugging, which makes charging more convenient. When the POS machine 200 is charging, the normal operating viewing angle can be maintained, which is convenient for use and operation.

[0051] The working principle of the utility model is as follows:

[0052] When charging a single device, since the first PIN pin 242 with a matching slope is provided on the charging base 2, the first PIN pin 242 is inserted into the charging hole 232 of the bracket 23, so that the first PIN pin 242 is in contact with the charging contact 201 of the POS machine 200, and the first PIN pin 242, the PCB board 241 and the typ-c interface 246 make precise contact, so that the single POS machine 200 can be charged. The charging process is: POS machine 200→first PIN pin 242→PCB board 241→typ-c interface 246→typ-c charging cable→socket;

[0053] When multiple charging stations are used, since the multiple charging bases 2 are detachably connected, the protrusion 211 of the upper shell 21 of the left charging base 2 and the groove 221 of the lower shell 22 of the right charging base 2 are sleeved, and the male buckle 222 provided at the front and rear sides of the groove 221 of the lower shell 22 and the female buckle 212 provided at the front and rear sides of the protrusion 211 of the upper shell 21 are snap-connected, and then the first limiting block 223 is connected to the first limiting groove 213 and the second limiting block 224 is connected to the second limiting groove 214 for limiting, so as to achieve close connection between the multiple charging bases 2; a second PIN pin 243 is provided at the lower left end of the PCB board 241, a power cord 244 and a charging adapter board 245 are provided at the upper right end, and a third PIN pin 11, a charging board 12 and a DC interface 13 are provided on the rightmost DC box 1 to realize synchronous charging of multiple units after plugging in. Assuming When two POS machines 200 are charged together, the two POS machines 200 are inserted into the brackets 23 of the two charging bases 2. The charging process of the first POS machine 200 (on the right) is: POS machine 200→first PIN pin 242→PCB board 241→power cord 244→charging adapter board 245→third PIN pin→charging small board→DC interface→DC charging cable→socket; the charging process of the second POS machine 200 (on the left) is: POS machine 200→first PIN pin 242→PCB board 241→power cord 244→charging adapter board 245→second PIN pin 243 in the right charging base 2→PCB board 241 in the right charging base 2→power cord 244 in the right charging base 2→charging adapter board 245 in the right charging base 2→third PIN pin 11→charging small board 12→DC interface 13→DC charging cable→socket.

[0054] The above descriptions are only some embodiments of the present invention, and do not limit the protection scope of the present invention. Any equivalent device or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A convenient charging base for POS machine, characterized in that: include: A DC box and multiple charging bases, wherein the multiple charging bases are detachably connected to each other, each of the charging bases comprises an upper shell, a lower shell, a bracket and a host power connection module, wherein the bracket is sleeved on the inner side of the upper shell, and the lower shell covers the upper shell, wherein an inner cavity adapted to the POS machine is provided in the bracket, and a charging hole matched to the charging contacts of the POS machine is provided at the bottom of the bracket, wherein the host power connection module is installed between the upper shell and the lower shell, wherein the upper power connection end of the host power connection module is exposed in the charging hole for contacting and connecting with the charging contacts of the POS machine, wherein the left power connection end of the host power connection module passes through the left end of the lower shell and is electrically connected to the right power connection end of the host power connection module in the left charging base, wherein the right power connection end of the host power connection module is exposed on the right surface of the upper shell and is electrically connected to the left power connection end of the host power connection module in the right charging base, and wherein the DC box is electrically connected to the right power connection end of the host power connection module in the rightmost charging base.

2. A convenient charging base for POS machines as claimed in claim 1, characterized in that: The host power connection module includes a PCB board, a first PIN pin, a second PIN pin, a power cord and a charging adapter board. The first PIN pin is installed at the upper left end of the PCB board and inserted into the charging hole for contacting and connecting with the charging contact of the POS machine. The second PIN pin is installed at the lower left end of the PCB board and passes through the left end of the lower shell; one end of the power cord is connected to the PCB board, and the other end of the power cord is connected to the charging adapter board. The right end of the charging adapter board is provided with a through hole for the second PIN pin or DC box in the right host power connection module to be inserted.

3. A convenient charging base for POS machine as claimed in claim 2, characterized in that: A typ-c interface is provided at the lower right end of the PCB board.

4. A convenient charging base for POS machine as claimed in claim 3, characterized in that: The DC box includes a third PIN pin, a charging board, a DC interface, an upper box and a lower box. The upper box and the lower box are covered. The third PIN pin, the charging board and the DC interface are all installed between the upper box and the lower box. The third PIN pin is inserted into the through hole of the charging adapter board in the rightmost host power connection module. The charging board is electrically connected to the third PIN pin and the DC interface respectively, and the DC interface is installed on the charging board.

5. A convenient charging base for POS machine as claimed in claim 4, characterized in that: A groove is provided at the left end of the lower shell, and a protrusion matched with the groove is provided at the right end of the upper shell. The protrusion of the upper shell in the left charging base is socketed with the groove of the lower shell in the right charging base; a groove is provided at the left end of the lower box, and the groove of the lower box is socketed with the protrusion of the upper shell in the rightmost charging base.

6. A convenient charging base for POS machine as claimed in claim 5, characterized in that: Male buckles are provided on the front and rear sides inside the groove, and female buckles matching the male buckles are provided on the front and rear sides outside the protrusion. When the protrusion of the upper shell in the left charging base is socketed with the groove of the lower shell in the right charging base, or when the groove of the lower box is socketed with the protrusion of the upper shell in the rightmost charging base, the male buckle and the female buckle are snap-connected.

7. A convenient charging base for POS machine as claimed in claim 5, characterized in that: A first limit block and a second limit block are provided on the right side of the groove, a connecting hole for inserting a second PIN needle is provided on the first limit block, a first limit groove and a second limit groove are provided on the right end of the protrusion, the through hole of the charging adapter plate is connected with the first limit groove, and the typ-c interface is connected with the second limit groove, the first limit block is arranged corresponding to the first limit groove, and the second limit block is arranged corresponding to the second limit groove, when the protrusion of the upper shell in the left charging base is socketed with the groove of the lower shell in the right charging base or when the groove of the lower box is socketed with the protrusion of the upper shell in the rightmost charging base, the first limit block is connected to the first limit groove and the second limit block is connected to the second limit groove for limiting.

8. A convenient charging base for POS machine as claimed in claim 1, characterized in that: The bottoms of the lower shell and the lower box are provided with a plurality of foot pads.

9. A convenient charging base for POS machine as claimed in claim 1, characterized in that: The bracket is inclined at an angle to the horizontal direction, and the range of the inclination angle is between 60° and 80°.

10. A convenient charging base for POS machine as claimed in claim 1, characterized in that: The charging base is connected to the POS machine by plugging and unplugging.

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