Assembling structure of receipt printer and electronic equipment

Abstract

The utility model discloses an assembling structure of a receipt printer and electronic equipment. The assembling structure comprises an accommodating cabin and a protective cover, the accommodating cabin is fixed on the bracket; a cabin of the accommodating cabin is used for assembling a printing paper roll of the receipt printer; the opening of the protective cover abuts against the containing cabin and is fixed to the support. An inner cavity of the protective cover is communicated with a cabin chamber of the accommodating cabin; an inner cavity of the protective cover is used for assembling a printer core of the receipt printer. According to the utility model, the structure of assembling the receipt printer on the cash register support is simplified, and the assembling difficulty is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of assembly structures, and particularly relates to an assembly structure of a receipt printer and an electronic device. Background Art

[0002] In the related art, receipt printers are applied to self-checkout activities in various shopping malls and supermarkets.

[0003] Among them, receipt printers are usually adapted to cash register brackets for self-checkout activities. However, in the related art, for some cash register brackets with a small accommodation space, due to the complex assembly structure of the receipt printer, the assembly difficulty is large and the volume is large. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide an assembly structure of a receipt printer and an electronic device, which simplifies the structure of assembling the receipt printer on the cash register bracket and reduces the assembly difficulty.

[0005] To solve the above technical problem, the technical solution adopted by the utility model is as follows:

[0006] An assembly structure of a receipt printer is arranged on a bracket and includes a receiving cabin and a protective cover;

[0007] The receiving cabin is fixed on the bracket;

[0008] The cabin of the receiving cabin is used for assembling the paper roll of the receipt printer;

[0009] The open end of the protective cover abuts against the receiving cabin and is fixed on the bracket;

[0010] The inner cavity of the protective cover communicates with the cabin of the receiving cabin;

[0011] The inner cavity of the protective cover is used for assembling the printer core of the receipt printer.

[0012] Further, a window is arranged on the bracket;

[0013] One side of the receiving cabin provided with a hatch is fixed to the window.

[0014] Further, two parallel grooves are arranged on the edge of the bracket close to the window;

[0015] The receiving cabin is provided with an extended fixing part around the edge of the hatch;

[0016] Two parallel first convex edges are arranged on the extended fixing part;

[0017] The grooves correspond to the first convex edges one by one, and the first convex edges are embedded in the grooves.

[0018] Further, a U-shaped notch corresponding to the shape of the accommodation chamber is provided at the edge of the open end;

[0019] The edge of the hatch abuts against the U-shaped notch, so that the inner cavity of the protective cover communicates with the chamber of the accommodation chamber.

[0020] Further, positioning posts are provided at the protective cover near the U-shaped notch;

[0021] The extension fixing portion is provided with positioning holes;

[0022] The positioning posts correspond to the positioning holes one by one, and the positioning posts are embedded in the positioning holes.

[0023] Further, two parallel second convex edges are provided at the edge of the open end;

[0024] The grooves correspond to the second convex edges one by one, and the second convex edges are embedded in the grooves.

[0025] Further, the positioning post includes a first positioning post;

[0026] A first threaded hole is provided at the top of the first positioning post;

[0027] The first threaded hole and the positioning hole are used for installing screws, so that the protective cover is fixed to the accommodation chamber.

[0028] Further, the positioning post includes a second positioning post;

[0029] A second threaded hole is provided at the top of the second positioning post;

[0030] An installation portion is provided at the edge of the window;

[0031] Installation holes are provided on the installation portion;

[0032] The second threaded hole and the installation hole are used for installing screws, so that the accommodation chamber and the protective cover are fixed to the bracket.

[0033] Further, a plurality of hollow openings are further provided on the protective cover.

[0034] In order to solve the above technical problems, another technical solution adopted by the present invention is:

[0035] An electronic device includes the assembly structure of the above-mentioned receipt printer.

[0036] The beneficial effects of the present utility model are as follows: The assembly structure is set as a protective cover for assembling a printer core and a receiving compartment for assembling a roll of printing paper. The open end of the protective cover abuts against the receiving compartment, so that the inner cavity of the protective cover communicates with the chamber of the receiving compartment, thereby ensuring a tight combination between the printer core and the roll of printing paper of the receipt printer to achieve printing on the roll of printing paper. By assembling the printer core and the roll of printing paper with the protective cover and the receiving compartment respectively, and then fixing the protective cover and the receiving compartment to the bracket, the fixing structure of the receipt printer is effectively simplified. During the assembly process, the printer core and the protective cover can be assembled into an independent module and then assembled with the bracket and the receiving compartment, effectively reducing the assembly difficulty of the printer. Description of the Drawings

[0037] Figure 1 is a side view of an assembly structure of a receipt printer according to an embodiment of the present utility model;

[0038] Figure 2 is a schematic structural diagram of a bracket according to an embodiment of the present utility model;

[0039] Figure 3 is a schematic structural diagram of a groove according to an embodiment of the present utility model;

[0040] Figure 4 is a schematic structural diagram of a receiving compartment according to an embodiment of the present utility model;

[0041] Figure 5 is a schematic structural diagram of a bracket and a receiving compartment according to an embodiment of the present utility model;

[0042] Figure 6 is a schematic structural diagram of a protective cover according to an embodiment of the present utility model;

[0043] Figure 7 is a schematic structural diagram of a receiving compartment and a protective cover according to an embodiment of the present utility model;

[0044] Figure 8 is another schematic structural diagram of a receiving compartment according to an embodiment of the present utility model;

[0045] Figure 9 is Figure 7 a detailed schematic diagram of part A in

[0046] Figure 10 is a schematic structural diagram of a window according to an embodiment of the present utility model;

[0047] Figure 11 is another schematic structural diagram of a protective cover according to an embodiment of the present utility model;

[0048] Reference Numeral Description:

[0049] 1. Assembly structure of a receipt printer;

[0050] 11. Accommodating chamber; 111. Hatch; 112. Extended fixing part; 1121. First convex edge; 1122. Extension part; 1123. Positioning hole;

[0051] 12. Protective cover; 121. U-shaped notch; 122. Second convex edge; 123. Positioning post; 124. Fixed edge; 125. Hollow opening; 1231. First positioning post; 1232. Second positioning post;

[0052] 2. Bracket; 21. First side plate; 22. Second side plate; 23. Bottom plate; 24. Window; 25. Groove; 241. Mounting part; 2411. Mounting hole. Detailed implementation mode

[0053] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application clearer and more understandable, the following further elaborates on this application in combination with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not used to limit this application.

[0054] In the following description, specific details such as specific system structures and technologies are presented for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of this application. However, those skilled in the art should clearly understand that this application can also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid unnecessary details from interfering with the description of this application.

[0055] It should be understood that when used in the specification of this application and the appended claims, the term "comprising" indicates the presence of the described features, wholes, steps, operations, elements, and / or components, but does not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components, and / or their combinations.

[0056] The reference to "one embodiment" or "some embodiments" etc. described in the specification of this application means that a specific feature, structure, or characteristic described in combination with that embodiment is included in one or more embodiments of this application. Thus, the statements "in one embodiment", "in some embodiments", "in other some embodiments", "in still other embodiments", etc. that appear in different places in this specification do not necessarily all refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "comprising", "including", "having" and their variants all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0057] In the related art, a receipt printer is usually adapted to a cash register stand for self-service cash register activities. However, currently, for some cash register stands with a small accommodation space, due to the complex assembly structure of the receipt printer, the assembly is difficult and the volume is large. To solve the above technical problems, an embodiment of the present utility model provides a paper cabin structure for a receipt printer, specifically:

[0058] An assembly structure of a receipt printer is provided on a stand, including a receiving cabin and a protective cover;

[0059] The receiving cabin is fixed on the stand;

[0060] The cabin of the receiving cabin is used for assembling the paper roll of the receipt printer;

[0061] The open end of the protective cover abuts against the receiving cabin and is fixed on the stand;

[0062] The inner cavity of the protective cover communicates with the cabin of the receiving cabin;

[0063] The inner cavity of the protective cover is used for assembling the printer core of the receipt printer.

[0064] As can be seen from the above description, the beneficial effect of the present utility model is that the assembly structure is set as a protective cover for assembling the printer core and a receiving cabin for assembling the paper roll, and the open end of the protective cover abuts against the receiving cabin, so that the inner cavity of the protective cover communicates with the cabin of the receiving cabin, thereby ensuring a tight combination between the printer core and the paper roll of the receipt printer to achieve printing on the paper roll. By respectively assembling the printer core and the paper roll with the protective cover and the receiving cabin, and then fixing the protective cover and the receiving cabin on the stand, the fixing structure of the receipt printer is effectively simplified. During the assembly process, the printer core and the protective cover can be assembled into an independent module and then assembled with the stand and the receiving cabin, effectively reducing the assembly difficulty of the printer.

[0065] In an embodiment of the present application, the stand has a structure similar to a triangular prism, and the stand includes a first side plate, a second side plate, and a bottom plate that are sequentially connected end to end; an included angle space is formed between the first side plate and the bottom plate, and between the second side plate and the bottom plate respectively, and the receiving cabin is arranged in any one of the included angle spaces.

[0066] In an embodiment of the present application, the protective cover serves as a fixing bracket for the printer core, so that the printer core can be fixed on the stand.

[0067] In an embodiment of the present application, a window is provided on the stand;

[0068] One side of the receiving cabin provided with a cabin opening is fixed to the window.

[0069] As described above, by providing a window on the bracket and correspondingly arranging the hatch of the accommodation chamber with the window of the bracket, an open channel is formed between the accommodation chamber and the external space, thereby facilitating the placement of the paper roll.

[0070] In an embodiment of the present application, a window is provided on the first side plate of the bracket, the accommodation chamber is arranged in the angular space between the first side plate and the bottom plate, and the side of the accommodation chamber provided with the hatch is fixed to the window.

[0071] In an embodiment of the present application, two parallel grooves are provided on the edge of the bracket near the window;

[0072] An extended fixing portion is provided around the edge of the hatch of the accommodation chamber;

[0073] Two parallel first convex edges are provided on the extended fixing portion;

[0074] The grooves correspond to the first convex edges one by one, and the first convex edges are embedded in the grooves.

[0075] As described above, by providing grooves on the edge of the window of the bracket and first convex edges on the edge of the hatch of the accommodation chamber, and the grooves corresponding to the first convex edges, it is ensured that the accommodation chamber can be quickly positioned when fixed to the bracket, reducing the assembly difficulty.

[0076] In an embodiment of the present application, the bracket has a structure similar to a triangular prism, and a window is provided on the first side plate of the bracket. Two long and narrow grooves parallel to the side edge of the first side plate are provided on the first side plate.

[0077] In an embodiment of the present application, a U-shaped notch corresponding to the shape of the accommodation chamber is provided at the edge of the open end;

[0078] The edge of the hatch abuts against the U-shaped notch, so that the inner cavity of the protective cover is communicated with the chamber of the accommodation chamber.

[0079] As described above, by providing a U-shaped notch at the open edge of the protective cover and abutting the edge of the hatch of the accommodation chamber against the U-shaped notch, the quick positioning between the protective cover and the accommodation chamber is realized, ensuring that the open end of the protective cover corresponds to the hatch of the accommodation chamber.

[0080] In an embodiment of the present application, positioning posts are provided near the U-shaped notch of the protective cover;

[0081] Positioning holes are provided on the extended fixing portion;

[0082] The positioning posts correspond to the positioning holes one by one, and the positioning posts are embedded in the positioning holes.

[0083] As described above, by providing positioning posts at the open end of the protective cover and positioning holes at the hatch of the accommodation cabin, the positioning posts are matched with the positioning holes to prevent displacement between the protective cover and the accommodation cabin and ensure the stability of the assembly structure.

[0084] In an embodiment of the present application, two mutually parallel second convex edges are provided at the edge of the open end;

[0085] The grooves correspond to the second convex edges one by one, and the second convex edges are embedded in the grooves.

[0086] As described above, by providing the second convex edges at the open end of the protective cover and matching the second convex edges with the grooves, the protective cover can be quickly positioned when fixed to the bracket, reducing the assembly difficulty.

[0087] In an embodiment of the present application, the positioning post includes a first positioning post;

[0088] A first threaded hole is provided at the top of the first positioning post;

[0089] The first threaded hole and the positioning hole are used for installing screws so that the protective cover is fixed to the accommodation cabin.

[0090] As described above, by providing the first threaded hole on the first positioning post, there is no need to additionally provide a fixing structure. While achieving positioning, the protective cover can be fixed to the accommodation cabin, effectively simplifying the assembly structure.

[0091] In an embodiment of the present application, the positioning post includes a second positioning post;

[0092] A second threaded hole is provided at the top of the second positioning post;

[0093] An installation part is provided at the edge of the window;

[0094] Installation holes are provided on the installation part;

[0095] The second threaded hole and the installation holes are used for installing screws so that the accommodation cabin and the protective cover are fixed to the bracket.

[0096] As described above, by providing the second threaded hole on the second positioning post and providing installation holes at the edge of the window, when the second positioning post is embedded in the positioning hole to achieve relative positioning between the protective cover and the accommodation cabin, the second positioning post penetrates the positioning hole and jointly installs screws with the installation holes, thereby realizing the fixation among the accommodation cabin, the protective cover, and the bracket, effectively simplifying the assembly structure and reducing the assembly difficulty.

[0097] In an embodiment of the present application, a plurality of hollow openings are further provided on the protective cover.

[0098] As described above, by providing a plurality of hollow openings to avoid the irregular shape of the printer core and facilitate positioning when the printer core is assembled into the protective cover.

[0099] Another embodiment of the present utility model provides an electronic device, including the assembly structure of the above-mentioned receipt printer.

[0100] In an embodiment of the present application, the electronic device can be a cash register, a self-service terminal, a payment device, etc.

[0101] The assembly structure of the receipt printer provided by the present utility model can be applied to scenarios where the accommodation space of the bracket is small. For example, it can be applied to the cash register bracket. The following is described by specific embodiments:

[0102] Embodiment 1

[0103] As Figure 1 shown, an assembly structure 1 of a receipt printer is provided on a bracket 2, including a receiving chamber 11 and a protective cover 12. The receiving chamber 11 is fixed on the bracket 2; the chamber of the receiving chamber 11 is used to assemble the paper roll of the receipt printer. The open end of the protective cover 12 abuts against the receiving chamber 11 and is fixed on the bracket 2; the inner cavity of the protective cover 12 communicates with the chamber of the receiving chamber 11; the inner cavity of the protective cover 12 is used to assemble the printer core of the receipt printer. Among them, the bracket 2 includes a first side plate 21, a second side plate 22 and a bottom plate 23. The first side plate 21, the second side plate 22 and the bottom plate 23 are sequentially connected end to end to form a triangular prism structure. An included angle space is respectively formed between the first side plate 21 and the bottom plate 23, and between the second side plate 22 and the bottom plate 23. The receiving chamber 11 is arranged in any one of the included angle spaces (as Figure 1 shown, the receiving chamber 11 is arranged in the included angle space formed by the first side plate 21 and the bottom plate 23). At the same time, the chamber of the receiving chamber 11 is cylindrical to adapt to the shape of the paper roll, so as to reduce the volume occupied by the receiving chamber 11 in the included angle space. The printer core is used to control the movement of the paper roll in the receiving chamber 11 and complete the printing task on the paper roll.

[0104] As Figure 2 shown, a window 24 is provided on the bracket 2; one side of the receiving chamber 11 provided with a hatch 111 is fixed to the window 24. Among them, the window 24 is provided on the first side plate 21 of the bracket 2, then one side of the receiving chamber 11 provided with the hatch 111 is fixed in the included angle space between the first side plate 21 and the bottom plate 23.

[0105] As Figures 3 to 5As shown in the figure, two parallel grooves 25 are provided at the edge of the bracket 2 close to the window 24. An extension fixing part 112 is provided around the edge of the accommodation cabin 11 around the hatch 111, and two parallel first convex edges 1121 are provided on the extension fixing part 112. The grooves 25 correspond to the first convex edges 1121 one by one, and the first convex edges 1121 are embedded in the grooves 25. Among them, since the accommodation cabin 11 is cylindrical and the hatches 111 of the accommodation cabin 11 are not on the same plane, the extension fixing part 112 is only provided around the edge where the hatch 111 is in contact with the first side plate 21, and the shape and size of the extension fixing part 112 are the same as those of the window 24 on the bracket 2, so that the accommodation cabin 11 can be attached to the first side plate 21 to improve the stability of fixation. Based on the extension fixing part 112, the hatch 111 of the accommodation cabin 11 is divided into a main hatch and a secondary hatch. Among them, the main hatch corresponds to the window 24 on the bracket 2, so that an open channel is formed between the accommodation cabin 11 and the external space; the secondary hatch corresponds to the opening of the protective cover 12, so that the accommodation cabin 11 is communicated with the protective cover 12. A plurality of threaded holes are also provided on the extension fixing part 112 for fixing the accommodation cabin 11 on the bracket 2.

[0106] As Figure 6 and Figure 7 shown, a U-shaped notch 121 corresponding to the shape of the accommodation cabin 11 is provided at the edge of the opening. The edge of the hatch 111 abuts against the U-shaped notch 121, so that the inner cavity of the protective cover 12 is communicated with the chamber of the accommodation cabin 11. Among them, the opening of the protective cover 12 includes two planes, and the opening of one plane is fixed on the first side plate 21 of the bracket 2, and the U-shaped notch 121 is provided at the edge of the opening of the other plane. The edge of the secondary hatch 111 is vertically abutted against the U-shaped notch 121. At the same time, an extension part 1122 is provided on the extension fixing part 112 on the side close to the secondary hatch 111, so that when the protective cover 12 abuts against the hatch 111, the protective cover 12 can be sleeved on the accommodation cabin 11 through the extension part 1122 to avoid displacement of the protective cover 12 or the accommodation cabin 11, thereby ensuring the relative position between the protective cover 12 and the accommodation cabin 11.

[0107] As Figure 6 shown, two parallel second convex edges 122 are provided at the edge of the opening; the grooves 25 correspond to the second convex edges 122 one by one, and the second convex edges 122 are embedded in the grooves 25. Among them, the first convex edge 1121 and the second convex edge 122 are on the same straight line.

[0108] As Figure 6 and Figure 8 shown, positioning posts 123 are provided on the protective cover 12 close to the U-shaped notch 121; positioning holes 1123 are provided on the extension fixing part 112. The positioning posts 123 correspond to the positioning holes 1123 one by one, and the positioning posts 123 are embedded in the positioning holes 1123.

[0109] As Figure 9 shown, the positioning post 123 includes a first positioning post 1231; a first threaded hole is provided at the top of the first positioning post 1231. The first threaded hole and the positioning hole 1123 are used for installing screws, so that the protective cover 12 is fixed to the accommodation chamber 11. Among them, the first positioning post 1231 can also use other methods such as snap connection, adhesion, mortise and tenon to fix the protective cover 12 to the accommodation chamber 11.

[0110] As Figure 9 and Figure 10 shown, the positioning post 123 includes a second positioning post 1232; a second threaded hole is provided at the top of the second positioning post 1232. An installation part 241 is provided at the edge of the window 24; an installation hole 2411 is provided on the installation part 241; the second threaded hole 126 and the installation hole 2411 are used for installing screws, so that the accommodation chamber 11 and the protective cover 12 are fixed to the bracket 2. Among them, the second positioning post 1232 can also use connection methods such as snap connection, adhesion, mortise and tenon to fix the accommodation chamber 11 and the protective cover 12 to the bracket 2.

[0111] As Figure 11 shown, in some embodiments, a fixing edge 124 is provided on the side of the protective cover 12 away from the U-shaped notch 121, and is fixed through the support platform between the threaded hole on the fixing edge 124 and the side plate of the bracket 2, so that the protective cover 12 is fixed to the bracket 2.

[0112] As Figure 11 shown, a plurality of hollow openings 125 are further provided on the protective cover 12. Among them, the shape and size of the hollow opening 125 depend on the module that the printer core needs to avoid.

[0113] In an embodiment of the present application, the process of assembling the receipt printer to the cash register bracket is specifically as follows: First, install the printer core in the protective cover 12 to form an independent assembly module. Then, through the U-shaped notch 121 and the positioning post 123 on the protective cover 12, the protective cover 12 is snap-connected to the accommodation chamber 11, and at the same time, through the screw hole of the positioning post 123, the positioning hole 1123 on the accommodation chamber 11 and the screw, the protective cover 12 is fixed to the accommodation chamber 11 to form a combined assembly module. Then, through the first convex edge 1121 of the accommodation chamber 11 and the second convex edge 122 of the protective cover 12, the combined assembly module is positioned at the window 24 of the bracket. Finally, the combined assembly module is fixed to the bracket 2 through the screw, the installation hole 2411 on the bracket 2 and the screw hole on the positioning post 123, and the receipt paper roll is assembled into the accommodation chamber 11 from the window 24 of the bracket 2 to complete the assembly process of the receipt printer.

[0114] In an embodiment of the present application, the process of assembling the receipt printer to the cash register bracket is as follows: First, position the accommodation chamber 11 at the window 24 of the bracket through the first convex edge 1121 of the accommodation chamber 11. Then, install the printer core in the protective cover 12 to form an independent assembly module. Next, engage the protective cover 12 with the accommodation chamber 11 through the U-shaped notch 121 and the positioning post 123 on the protective cover 12, and achieve positioning through the second convex edge 122 of the protective cover 12. Then, fix the accommodation chamber 11 to the bracket through the threaded hole on the extension fixing part 112 of the accommodation chamber 11. Finally, fix the protective cover 12 to the bracket 2 through screws, the mounting holes 2411 on the bracket, and the screw holes on the positioning post 123, and assemble the roll of printing paper into the accommodation chamber 11 from the window 24 of the bracket to complete the assembly process of the receipt printer.

[0115] In an embodiment of the present application, the process of disassembling and assembling the receipt printer from the cash register bracket is as follows: First, disassemble and assemble the protective cover 12 from the bracket 2, then disassemble the protective cover 12 from the accommodation chamber 11, and finally disassemble and assemble the accommodation chamber 11 from the bracket 2.

[0116] Embodiment 2

[0117] An electronic device includes the assembly structure of a receipt printer in Embodiment 1. For example, the electronic device is a financial terminal device such as a cash register. When assembling the receipt printer to the bracket, first fixedly install the printer core in the protective cover to form an independent assembly module. Then, fix it to the accommodation chamber through the U-shaped notch and the positioning post on the protective cover to form a combined assembly module. Next, position the combined assembly module at the window of the bracket through the first convex edge of the accommodation chamber and the second convex edge of the protective cover. Finally, fix the combined assembly module to the bracket through screws, the mounting holes of the bracket, and the screw holes of the positioning post. The fixing structure of the receipt printer is simplified through the protective cover and the accommodation chamber, effectively reducing the assembly difficulty of the receipt printer.

[0118] The above are only the embodiments of the present utility model, and thus do not limit the patent scope of the present utility model. Any equivalent transformation made using the description and drawings of the present utility model, or directly or indirectly applied in the related technical fields, shall similarly be included in the patent protection scope of the present utility model.

Claims

1. An assembly structure of a receipt printer, arranged on a bracket, characterized in that: Including a containment cabin and a protective cover; The accommodating chamber is fixed on the bracket; The compartment of the storage compartment is used to assemble the printing paper roll of the receipt printer; The opening of the protective cover is in contact with the accommodating chamber and is fixed on the bracket; The inner cavity of the protective cover is in communication with the cabin of the accommodation cabin; The inner cavity of the protective cover is used for assembling the printing mechanism of the receipt printer.

2. The assembly structure of a receipt printer according to claim 1, characterized in that: The bracket is provided with a window; The side of the storage compartment provided with a hatch is fixed to the window.

3. The assembly structure of a receipt printer according to claim 2, characterized in that: The bracket is provided with two grooves parallel to each other at the edge close to the window; The accommodating cabin is provided with an extended fixing portion around the edge of the hatch; The extending fixing portion is provided with two mutually parallel first convex edges; The grooves correspond to the first convex edges one by one, and the first convex edges are embedded in the grooves.

4. The assembly structure of a receipt printer according to claim 3, characterized in that: The edge of the opening is provided with a U-shaped notch corresponding to the shape of the accommodation chamber; The edge of the hatch abuts against the U-shaped notch, so that the inner cavity of the protective cover is connected with the cabin of the accommodating cabin.

5. The assembly structure of a receipt printer according to claim 4, characterized in that: The protective cover is provided with a positioning column near the U-shaped notch; The extended fixing portion is provided with a positioning hole; The positioning posts correspond to the positioning holes one by one, and the positioning posts are embedded in the positioning holes.

6. The assembly structure of a receipt printer according to claim 3, characterized in that: The edge of the opening is provided with two second convex edges parallel to each other; The groove corresponds to the second convex edge one by one, and the second convex edge is embedded in the groove.

7. The assembly structure of a receipt printer according to claim 5, characterized in that: The positioning column includes a first positioning column; A first threaded hole is provided at the top end of the first positioning column; The first threaded hole and the positioning hole are used to install screws so that the protective cover is fixed to the accommodating chamber.

8. The assembly structure of a receipt printer according to claim 5, characterized in that: The positioning column includes a second positioning column; A second threaded hole is provided at the top end of the second positioning column; The edge of the window is provided with a mounting portion; The mounting portion is provided with a mounting hole; The second threaded hole and the mounting hole are used to install screws so that the accommodating chamber and the protective cover are fixed on the bracket.

9. The assembly structure of a receipt printer according to claim 1, characterized in that: The protective cover is also provided with a plurality of hollow openings.

10. An electronic device, characterized in that: It comprises an assembly structure of a receipt printer as described in any one of claims 1-9.

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