Printer

Abstract

The application discloses a printer, relates to the technical field of printers, and solves the problems of complicated assembly, high production cost and inconvenience in maintenance of the existing printer. The printer comprises a base, a circuit board, a core and a locking piece, the base comprises a first casing and a second casing, the circuit board and the core are arranged between the first casing and the second casing, and the locking piece passes through the second casing, the circuit board and / or the core, the first casing and locks them. The application can realize the fixed installation of the circuit board and the core by directly locking the casing, simplifies the assembly process and reduces the production cost.

Description

Technical Field

[0001] This application relates to the field of printer technology, and more particularly to a printer. Background Technology

[0002] Currently, thermal printers are widely used in POS machines, vending machines, and cash registers. A thermal printer typically consists of a top cover, base, printhead assembly, roller assembly, and circuit board. Existing printer assembly processes are cumbersome, leading to high production costs and difficulties in maintenance. Therefore, there is a need for a printer with a simpler assembly process. Utility Model Content

[0003] In order to overcome the shortcomings of the prior art, the purpose of this application is to provide a printer that can effectively solve the technical problem of the cumbersome assembly process of printers in the prior art, simplify the assembly process of printers, reduce production costs and facilitate maintenance.

[0004] To solve the above problems, the technical solution adopted in this application is as follows:

[0005] This application provides a printer, including a base, a circuit board, a mechanism, and a locking member. The base includes a first housing and a second housing. The circuit board and the mechanism are disposed between the first housing and the second housing. At least one of the locking members passes through the second housing, the circuit board, and the first housing and locks the second housing, the first housing, and the circuit board. And / or, at least one of the locking members passes through the second housing, the mechanism, and the first housing and locks the second housing, the first housing, and the mechanism.

[0006] In some possible implementations, the first housing includes a circuit board mounting location and / or a movement mounting location, or the second housing includes a circuit board mounting location and / or a movement mounting location, with the movement mounted in the movement mounting location and the circuit board mounted in the circuit board mounting location.

[0007] In some possible implementations, the circuit board mounting position includes a circuit board positioning pin, the circuit board includes a first positioning hole that engages with the circuit board positioning pin, and / or, the movement mounting position includes a movement positioning pin, the movement includes a second positioning hole that engages with the movement positioning pin.

[0008] In some possible implementations, the circuit board positioning pin includes a first threaded hole, the locking member passes through the second housing, the first positioning hole and the first threaded hole are connected to lock the first housing, the second housing and the circuit board, and / or, the movement positioning pin includes a second threaded hole, the locking member passes through the second housing, the second positioning hole and the second threaded hole are connected to lock the first housing, the second housing and the movement.

[0009] In some possible implementations, the first housing includes a first side, a second side, and a first opening and a second opening connecting the first side and the second side, the first opening and the second opening being disposed opposite to each other, the mechanism and / or circuit board being disposed on the first side, the mechanism including a printhead assembly and a rubber roller assembly disposed opposite to each other, the rubber roller assembly and / or the printhead assembly being movably disposed relative to the mechanism, the rubber roller assembly and the printhead assembly being exposed to the second side through the first opening and the second opening.

[0010] In some possible implementations, the first housing further includes a third opening, the roller assembly includes a first end with a roller and a second end opposite to the first end, the first end being exposed to the second side through the first opening, and the second end being exposed to the second side through the third opening; or, the printhead assembly includes a third end with a thermal sheet and a fourth end opposite to the third end, the third end being exposed to the second side through the first opening, and the fourth end being exposed to the second side through the third opening.

[0011] In some possible implementations, the printer further includes a top cover detachably connected to the first housing on a second side of the first housing. The top cover includes a pressing portion capable of passing through the third opening and abutting against a second end of the roller assembly or a fourth end of the printhead assembly, thereby causing the roller assembly to move relative to the movement to abut against the printhead assembly, or causing the printhead assembly to move relative to the movement to abut against the roller assembly.

[0012] In some possible implementations, the pressing part is an arc-shaped protrusion with a raised surface, and the third opening includes a first side opening and a second side opening that are bent and perpendicular to each other. Correspondingly, the second end of the rubber roller assembly is provided with an arc-shaped groove that matches the arc-shaped protrusion. When the arc-shaped protrusion and the arc-shaped groove are fitted together at the third opening, the core is fixed in the locking direction. Alternatively, the fourth end of the printhead assembly is provided with an arc-shaped groove that matches the arc-shaped protrusion. When the arc-shaped protrusion and the arc-shaped groove are fitted together at the third opening, the core is fixed in the locking direction.

[0013] In some possible implementations, at least a portion of the circuit board is located between the movement and the first housing.

[0014] In some possible implementations, the second housing includes a third side and a fourth side, the circuit board and / or the mechanism is located on the third side, the second housing also includes a battery mounting portion disposed on the fourth side, and the base also includes a third housing, which is detachably connected to the second housing on the fourth side of the second housing.

[0015] Beneficial effects

[0016] The printer provided in this application has the following beneficial effects:

[0017] 1. Simplified assembly process: The structural design of locking components passing through the second housing, circuit board and / or movement, and first housing allows for direct locking of the housing to achieve fixed installation of the circuit board and movement. The assembly process is simple and significantly reduces production costs.

[0018] 2. Facilitates inspection and maintenance: The combination of the arc-shaped protrusion and the arc-shaped groove allows the movement to be temporarily fixed without the use of locking parts, which facilitates testing during the inspection process without the need for repeated disassembly and reassembly of locking parts, greatly simplifying the inspection process.

[0019] 3. Improved print quality: The self-adjusting structure of the rubber roller movable setting on the rubber roller mounting base can ensure that the rubber roller generatrix coincides with the thermal sheet printing line and provide uniform pressure along the printing line, effectively solving print quality problems caused by manufacturing and assembly precision errors.

[0020] 4. Preventing printing failures: The arc-shaped protrusion design of the top cover ensures that the top cover can only close to the first housing when the roller assembly and printhead assembly are properly pressed together, avoiding printing failures and paper waste caused by improper pressing.

[0021] 5. Dual temporary fixation: The temporary fixation of the mechanism can simultaneously achieve the temporary fixation of the circuit board, further improving the convenience of maintenance.

[0022] 6. Precise positioning and limiting: The design of the circuit board positioning pin and the movement positioning pin, together with the movement limiting block and the circuit board limiting block, realizes the precise positioning and reliable fixing of the parts, improving the assembly accuracy and product stability.

[0023] 7. User-friendly design: The viewing window on the top cover allows users to easily check the toilet paper usage and replace the toilet paper in a timely manner, improving the user experience. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the overall structure of a printer according to an embodiment of this application;

[0026] Figure 2 This is a schematic diagram of the disassembly structure of a printer according to an embodiment of this application;

[0027] Figure 3 This is a schematic diagram showing the disassembled state of the first housing, circuit board, and mechanism in an embodiment of this application;

[0028] Figure 4 This is a schematic diagram of the first angle of the first housing in an embodiment of this application;

[0029] Figure 5 This is a schematic diagram of the second angle of the first housing in an embodiment of this application;

[0030] Figure 6 This is a schematic diagram of the assembly structure of the movement and the first housing in an embodiment of this application;

[0031] Figure 7 This is a schematic diagram of the movement from a first angle in an embodiment of this application;

[0032] Figure 8 This is a schematic diagram of the movement from a second angle in an embodiment of this application;

[0033] Figure 9 This is a schematic diagram of the assembly structure of the top cover, the mechanism, and the circuit board in an embodiment of this application;

[0034] Figure 10 This is a schematic diagram of the structure of the second housing in an embodiment of this application;

[0035] Figure 11 This is a schematic diagram of the assembly structure of the first housing, the mechanism, and the circuit board in an embodiment of this application;

[0036] Figure Labels

[0037] 10-Base;

[0038] 11-First casing; 111-First opening; 112-Second opening; 113-Roll paper mounting position; 114-Third opening; 1141-First side opening; 1142-Second side opening; 115-Circuit board positioning component; 116-Mechanical mechanism positioning component; 117-Circuit board limiting block; 11a-First side; 11b-Second side;

[0039] 12-Second housing; 121-Battery mounting section; 12a-Third side; 12b-Fourth side;

[0040] 13-Third casing;

[0041] 20 - Circuit board;

[0042] 21-First positioning hole;

[0043] 22-Charging port;

[0044] 30-Movement;

[0045] 31-Rubber roller assembly; 311-Arc-shaped groove; 312-First end; 313-Second end; 314-Rubber roller mounting base; 3141-Mounting shaft; 3142-Mounting groove; 315-First torsion spring; 316-Rubber roller; 317-Second torsion spring;

[0046] 32-Printhead assembly; 321-Thermal sheet;

[0047] 33 - Second positioning hole;

[0048] 40 - Top cover;

[0049] 41-Pressing part; 411-Arched protrusion;

[0050] 42 - Visual window;

[0051] 50 rolls of paper;

[0052] S-limiting groove;

[0053] P - Paper feed path. Detailed Implementation

[0054] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0055] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0056] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0057] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0058] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0059] This application provides a printer. Figure 1 This is a schematic diagram of the overall structure of a printer according to an embodiment of this application. Figure 2 This is a schematic diagram of the disassembly structure of a printer according to an embodiment of this application. Specifically, refer to... Figure 1 and Figure 2The printer provided in this embodiment includes a base 10, a circuit board 20, a mechanism 30, and a locking member. The base 10 includes a first housing 11 and a second housing 12. The circuit board 20 and the mechanism 30 are disposed between the first housing 11 and the second housing 12. At least one locking member passes through the second housing 12, the circuit board 20, and the first housing 11 and locks the second housing 12, the first housing 11, and the circuit board 20. And / or, at least one locking member passes through the second housing 12, the mechanism 30, and the first housing 11 and locks the second housing 12, the first housing 11, and the mechanism 30.

[0060] Specifically, multiple locking components can be provided. At least one locking component passes through the second housing 12, the circuit board 20, and the first housing 11 and locks the second housing 12, the first housing 11, and the circuit board 20. At least one locking component passes through the second housing 12, the movement 30, and the first housing 11 and locks the second housing 12, the first housing 11, and the movement 30. The locking components used to lock the circuit board 20 or the movement 30 can be one, two, or three, and this embodiment does not impose any specific restrictions. In addition, in order to lock the first housing 11 and the second housing 12 more stably, some locking components directly pass through the second housing 12 and the first housing 11 and lock the second housing 12 and the first housing 11.

[0061] In this embodiment, the printer, after the circuit board 20 and / or the mechanism 30 are installed in the mounting position, directly locks the casing using locking components to secure the circuit board 20 and / or the mechanism 30. This eliminates the need to lock the circuit board 20 and / or the mechanism 30 before assembling the casing, simplifying the assembly process, reducing production costs, and facilitating maintenance. Specifically, in this embodiment, the printer can be a small handheld printer such as a thermal printer or a label printer.

[0062] The first housing 11 includes a circuit board mounting position and / or a movement mounting position, or the second housing 12 includes a circuit board mounting position and / or a movement mounting position, with the movement 30 mounted in the movement mounting position and the circuit board 20 mounted in the circuit board mounting position. Specifically, the first housing 11 may include both a circuit board mounting position and a movement mounting position, or the second housing 12 may include both a circuit board mounting position and a movement mounting position, or both may include both a circuit board mounting position and a movement mounting position. This embodiment does not impose specific limitations on this, as long as the movement 30 and the circuit board 20 can be mounted between the first housing 11 and the second housing 12.

[0063] Figure 3 This is a schematic diagram showing the disassembled state of the first housing, circuit board, and mechanism in an embodiment of this application. Specifically, as shown... Figure 3As shown, the first housing 11 includes a circuit board mounting position and a movement mounting position. The locking components include a first locking component, a second locking component, and a third locking component. The first locking component passes through the second housing 12, the circuit board 20, and the first housing 11 to lock the second housing 12, the first housing 11, and the circuit board 20. The second locking component passes through the second housing 12, the movement 30, and the first housing 11 to lock the second housing 12, the first housing 11, and the movement 30. The third locking component passes through the second housing 12 and the first housing 11 to lock the second housing 12 and the first housing 11.

[0064] Alternatively, in another embodiment, the first housing 11 may only include a circuit board mounting position or a movement mounting position, and the locking member includes a first locking member that passes through the second housing 12, the circuit board 20 or the movement 30, and the first housing 11 to lock the second housing 12, the first housing 11, and the circuit board 20 or the movement 30. Alternatively, in another embodiment, the first housing 11 includes a circuit board mounting position and a movement mounting position, and the locking member includes a first locking member that passes through the second housing 12, the circuit board 20, the movement 30, and the first housing 11 to lock the second housing 12, the first housing 11, the circuit board 20, and the movement 30. This embodiment does not impose specific limitations on this, as long as the circuit board 20 and / or the movement 30 can be locked simultaneously by locking the first housing 11 and the second housing 12 with the locking member.

[0065] For ease of explanation, this embodiment uses the first housing including a circuit board mounting position and a mechanism mounting position as an example. Figure 3 As shown, the circuit board mounting position includes a circuit board positioning component 115, which can be a circuit board positioning pin. The circuit board 20 includes a first positioning hole 21, which cooperates with the circuit board positioning component 115 to achieve positioning and installation of the circuit board 20. The movement mounting position includes a movement positioning component 116, which is a movement positioning pin. The movement 30 includes a second positioning hole 33, which cooperates with the movement positioning component 116 to achieve positioning and installation of the movement 30.

[0066] Specifically, in this embodiment, the locking component is a locking screw, and the circuit board positioning component 115 includes a first threaded hole. The locking component passes through the second housing, the first positioning hole 21, and is threadedly connected to the first threaded hole to lock the first housing 11, the second housing 12, and the circuit board 20. Similarly, the movement positioning component 116 includes a second threaded hole, and the locking component passes through the second housing, the second positioning hole 33, and is threadedly connected to the second threaded hole to lock the first housing 11, the second housing 12, and the movement 30.

[0067] Figure 4 This is a schematic diagram of the first angle of the first housing in an embodiment of this application; Figure 5 This is a schematic diagram of the second angle of the first housing in an embodiment of this application; Figure 6 This is a schematic diagram of the assembly structure of the movement and the first housing in an embodiment of this application; see reference. Figures 2-6 In this embodiment, the first housing 11 includes a first side 11a, a second side 11b, and a first opening 111 and a second opening 112 connecting the first side 11a and the second side 11b. The first opening 111 and the second opening 112 are arranged opposite to each other. The core 30 and the circuit board 20 are disposed on the first side 11a. The core 30 includes a printhead assembly 32 and a roller assembly 31 arranged opposite to each other. The roller assembly 31 and / or the printhead assembly 32 are movably disposed relative to the core 30. The roller assembly 31 and the printhead assembly 32 are exposed to the second side 11b through the first opening 111 and the second opening 112, respectively. Specifically, the movable arrangement of the roller assembly 31 and / or the printhead assembly 32 relative to the core 30 means that the roller assembly 31 is movably disposed relative to the core 30, or that the printhead assembly 32 is movably disposed relative to the core 30, or that both the roller assembly 31 and the printhead assembly 32 are movably disposed relative to the core 30.

[0068] Figure 7 This is a schematic diagram of the movement from a first angle in an embodiment of this application; Figure 8 This is a second-angle schematic diagram of the movement in an embodiment of this application; see reference. Figure 7 and Figure 8In this embodiment, the rubber roller assembly 31 includes a rubber roller mounting seat 314, a rubber roller 316 is mounted on the rubber roller mounting seat 314, the rubber roller mounting seat 314 is movably mounted on the machine core 30 via a first torsion spring 315 and a hinge shaft, and the print head assembly 32 is fixedly mounted on the machine core 30. To achieve high-quality printing, it is generally desirable for the generatrix of the rubber roller 316 and the printing line of the thermal sheet 321 to remain aligned and have uniform pressure along the printing line during the printing process. However, due to manufacturing and assembly precision errors, it may be difficult for the generatrix of the rubber roller 316 and the printing line to remain completely aligned and have uniform pressure during the printing process. Therefore, in order to enable the rubber roller 316 to adaptively adjust relative to the thermal sheet 321, in this embodiment, the rubber roller 316 is movably mounted on the rubber roller mounting base 314. Specifically, the rubber roller mounting base 314 is provided with two mounting shafts 3141 and two mounting grooves 3142. Two second torsion springs 317 are respectively sleeved on the two mounting shafts 3141, and the two sides of each second torsion spring 317 abut against the rubber roller mounting base 314 and the rubber roller 316 respectively. The two ends of the rubber roller 316 are movably mounted in the two mounting grooves 3142. More specifically, the two ends of the rubber roller 316 are respectively abutted against one side of the mounting groove 3142 by the second torsion spring 317. When force is applied to the rubber roller 316, the two ends of the rubber roller 316 can move independently from one side of the mounting groove 3142 to the other side under the action of force. That is, when force is applied to the print head assembly 32 and / or the rubber roller assembly 31, the rubber roller 316 and the thermal sheet 321 are pressed together. In this process, if the rubber roller 316 generatrix does not coincide with the printing line due to manufacturing precision error or assembly precision error, the two ends of the rubber roller 316 can move independently relative to the rubber roller mounting seat 314 until the rubber roller 316 generatrix coincides with the printing line and remains balanced under the force of the second torsion spring 317.

[0069] Alternatively, in other embodiments, the printhead assembly 32 includes a printhead mounting base, a thermal sheet 321 mounted on the printhead mounting base, the printhead mounting base being movably mounted on the core 30, and the roller assembly 31 being fixedly mounted on the core 30. Similarly, to achieve overlap between the roller 316 busbar and the printing line during the printing process, the thermal sheet 321 can also be movably disposed on the printhead mounting base. The movable mounting structure of the thermal sheet 321 can be designed with reference to known prior art, and this embodiment does not impose specific limitations on this.

[0070] In the above embodiments, such as Figures 4-6As shown, a paper path P is formed between the first opening 111 and the second opening 112. Paper passes through the first opening 111 and the second opening 112. The roller assembly 31 and the printhead assembly 32 press the paper together from both sides at the first opening 111 and the second opening 112 respectively for printing. Correspondingly, in some embodiments, a paper roll mounting position 113 is also formed on the second side 11b of the first housing 11. The paper roll 50 is disposed in the paper roll mounting position 113, and the paper roll 50 can pass through the first opening 111 and the second opening 112.

[0071] Figure 9 This is a schematic diagram of the assembly structure of the top cover, mechanism, and circuit board in an embodiment of this application; see reference. Figures 2-7 In this embodiment, to facilitate applying force to the roller assembly 31 and / or the printhead assembly 32 to press the paper firmly at the first opening 111 and the second opening 112, such as Figures 4-9 As shown, the first housing 11 also includes a third opening 114. The roller assembly 31 includes a first end 312 on which a roller 316 is disposed and a second end 313 opposite to the first end 312. The first end 312 is exposed to the second side 11b of the first housing 11 through the first opening 111, and the second end 313 is exposed to the second side 11b of the first housing 11 through the third opening 114. Alternatively, the printhead assembly 32 includes a third end on which a thermal sheet 321 is disposed and a fourth end opposite to the third end. The third end is exposed to the second side 11b of the first housing 11 through the first opening 111, and the fourth end is exposed to the second side 11b of the first housing 11 through the third opening 114. With this configuration, force can be applied to the roller assembly 31 or the printhead assembly 32 through the third opening 114, causing the roller assembly 31 and the printhead assembly 32 to press the paper together at the first opening 111 and the second opening 112 for printing.

[0072] Furthermore, to facilitate applying force to the roller assembly 31 or the printhead assembly 32 through the third opening 114, refer to Figure 2 and Figure 9 In this embodiment, the printer further includes a top cover 40, which is detachably connected to the first housing 11 on its second side 11b. The top cover 40 includes a pressing part 41, which can pass through a third opening 114 and abut against the second end 313 of the roller assembly 31 or the fourth end of the printhead assembly 32. This causes the roller assembly 31 to move relative to the movement 30 to abut against the printhead assembly 32, or vice versa. This configuration allows the printhead assembly 32 and the roller assembly 31 to be pressed together by simply closing the top cover 40 without further operation, thus improving the user experience.

[0073] Specifically, such as Figure 6 and Figure 9As shown, the pressing part 41 is an arc-shaped protrusion 411 with a raised surface, and the third opening 114 includes a first side opening 1141 and a second side opening 1142 that are bent. The first side opening 1141 is perpendicular to the second side opening 1142. Correspondingly, the second end 313 of the rubber roller assembly 31 is provided with an arc-shaped groove 311 that matches the arc-shaped protrusion 411. When the arc-shaped protrusion 411 and the arc-shaped groove 311 are installed together at the third opening 114, the core 30 is fixed in the locking direction. Alternatively, the fourth end of the print head assembly 32 is provided with an arc-shaped groove that matches the arc-shaped protrusion 411. When the arc-shaped protrusion 411 and the arc-shaped groove are installed together at the third opening 114, the core 30 is fixed in the locking direction.

[0074] For more specific details, please refer to... Figure 9 Taking the arc-shaped groove 311 located at the second end 313 of the rubber roller assembly 31 as an example, when the upper cover 40 is closed onto the first housing 11, along the locking direction, the middle part of the protruding surface of the arc-shaped protrusion 411 is raised relative to its upper and lower ends, while the middle part of the groove surface of the arc-shaped groove 311 is recessed relative to its upper and lower ends. When the arc-shaped protrusion 411 and the arc-shaped groove 311 are installed together, the groove surface of the arc-shaped groove 311 abuts against the protruding surface of the arc-shaped protrusion 411 under the action of the rubber roller mounting seat 314 and the first torsion spring 315, so that the middle part of the protruding surface of the arc-shaped protrusion 411 and the upper and lower ends of the groove surface of the arc-shaped groove 311 coincide along the locking direction of the core 30, and the core 30 and the upper cover 40 are engaged by the arc-shaped protrusion 411 and the arc-shaped groove 311. When the arc-shaped groove 311 of the mechanism 30 passes through the third opening 114 from the first side 11a of the first housing 11 and engages with the arc-shaped protrusion 411 of the upper cover 40 on the second side 11b, the bottom of the arc-shaped protrusion 411 abuts against the upper surface of the second side 11b of the first housing 11, thereby fixing the upper cover 40, the first housing 11, and the mechanism 30. That is, the mechanism 30 is temporarily fixed by the limiting engagement of the arc-shaped protrusion 411 and the arc-shaped groove 311 in the locking direction. In other words, the printer provided in this embodiment can ensure that the mechanism 30 remains stable relative to the first housing 11 without using locking components to fix the mechanism 30. During maintenance, the mechanism 30 can be stabilized relative to the first housing 11 without the need for locking components to fix it, so as to conduct testing, thereby simplifying the maintenance process. The specific implementation scheme where the arc-shaped groove is located at the fourth end of the printhead assembly 32 is similar, and will not be described in detail here.

[0075] Since the circuit board 20 does not need to be exposed on the second side 11b of the first housing 11, it cannot be temporarily fixed directly by the top cover 40. (Continue referring to...) Figure 9In this embodiment, in order to temporarily fix the circuit board 20 by temporarily fixing the movement 30, at least part of the circuit board 20 is located between the movement 30 and the first housing 11. That is, the circuit board 20 is sandwiched between the movement 30 and the first housing 11. When the movement 30 is temporarily fixed, the circuit board 20 is also temporarily fixed.

[0076] In addition, it should be noted that in a thermal printer, whether the roller assembly 31 and the print head assembly 32 are properly pressed together is crucial to the printing process. In order to avoid waste caused by starting printing without properly pressing the roller assembly 31 and the print head assembly 32 together, in this embodiment, the arc-shaped protrusion 411 is designed so that the top cover 40 can only be closed with the first housing 11 in a preset manner. Specifically, the arc-shaped protrusion 411 includes a protruding surface and a plane opposite to the protruding surface. In actual installation, the upper cover 40 needs to be tilted relative to the first housing 11 so that part of the pressing part 41 can be inserted into the limiting groove S of the first housing 11 that communicates with the third opening 114. At this time, the protruding surface of the arc-shaped protrusion 411 abuts against the second end 313 of the rubber roller assembly 31, and at least a part of the plane opposite to the protruding surface abuts against the side wall of the limiting groove S of the first housing 11. Then, the upper cover 40 is rotated with at least a part of the plane opposite to the protruding surface as the fulcrum. The arc-shaped protrusion 411 will squeeze the second end 313 of the rubber roller assembly 31 during the rotation, so that the rubber roller mounting seat 314 overcomes the force of the first torsion spring 315 and rotates around the hinge axis until the protruding surface of the arc-shaped protrusion 411 and the groove surface of the arc-shaped groove 311 engage and lock together, so that the upper cover 40 and the base 10 are closed. In this embodiment, if the pressing part 41 is not first inserted into the limiting groove S of the first housing 11 before rotating the upper cover 40 to achieve the closing, the upper cover 40 cannot close with the first housing 11. That is, the position of the arc protrusion 411 corresponding to the third opening 114 needs to be matched with the arc groove 311 on the second end 313 of the roller assembly 31 and / or the fourth end of the print head assembly 32 before the upper cover 40 can be closed. In other words, the upper cover 40 can only close with the first housing 11 when the roller assembly 31 and the print head assembly 32 are pressed together, thereby avoiding the problem of printing failure caused by the roller assembly 31 and the print head assembly 32 not being pressed together after the upper cover 40 is closed.

[0077] Furthermore, the upper cover 40 and the first housing 11 are connected by a snap-fit ​​mechanism, specifically the upper cover 40 and the first housing 11 can be closed by a snap-fit ​​structure.

[0078] In some embodiments, the upper cover 40 may also be provided with a viewing window 42, such as Figure 2As shown, when the top cover 40 is installed on the first housing 11, the viewing window 42 is positioned opposite to at least part of the roll paper mounting position 113, so that the usage status of the roll paper 50 can be viewed through the viewing window 42, making it convenient for users to check the usage status of the roll paper 50 and replace the roll paper 50 in time when it is finished using it.

[0079] In some embodiments, the printer may include a charging port 22, through which the printer is powered by charging. Alternatively, in other embodiments, the printer may include a battery mounting location, through which the printer is powered by installing a battery. Or, in other embodiments, the thermal printer may include both a charging port 22 and a battery mounting location; that is, in some usage scenarios, the printer can be powered via the charging port 22, while in other usage scenarios, the printer can be powered by installing a battery.

[0080] Figure 10 This is a schematic diagram of the structure of the second housing in an embodiment of this application, as shown below. Figure 10 As shown, the second housing 12 includes a third side 12a and a fourth side 12b, with the circuit board 20 and / or the mechanism 30 located on the third side 12a. The fourth side 12b of the second housing 12 includes a battery mounting portion 121. In this embodiment, referring to... Figure 1 and Figure 2 The base 10 also includes a third housing 13, which is detachably connected to the second housing 12 on its fourth side 12b. In this embodiment, the third housing 13 and the second housing 12 are snap-fitted together, specifically through a snap-fit ​​structure to achieve the closing of the third housing 13 and the second housing 12.

[0081] Furthermore, in some embodiments, in order to facilitate the stable installation of the circuit board 20 and the movement 30, the first housing 11 and / or the second housing 12 may also be provided with a movement limiting block and / or a circuit board limiting block 117, the movement limiting block abutting against the movement 30, and / or the circuit board limiting block 117 abutting against the circuit board 20. Figure 11 This is a schematic diagram of the assembly structure of the first housing, mechanism, and circuit board in an embodiment of this application. Specifically, as shown... Figure 11As shown, the first housing 11 is provided with a circuit board positioning component 115 and a movement positioning component 116. The circuit board positioning component 115 cooperates with the first positioning hole 21 to achieve the positioning and installation of the circuit board 20, and the movement positioning component 116 cooperates with the second positioning hole 33 to achieve the positioning and installation of the movement 30. Simultaneously, the first housing 11 is provided with a circuit board limiting block 117, which abuts against the circuit board 20 on the outside. Specifically, in this embodiment, the circuit board 20 includes a limiting groove that cooperates with the circuit board limiting block 117. The cooperation between the circuit board limiting block 117 and the limiting groove helps to achieve stable installation of the circuit board 20. Alternatively, the first housing 11 may also be provided with a movement limiting block, which abuts against the movement 30 on the outside to achieve stable installation of the movement 30. Alternatively, in some other embodiments, the mechanism limiting block and / or circuit board limiting block 117 may be disposed on the second housing 12. In addition, this embodiment does not impose specific restrictions on the specific structure of the circuit board limiting block and / or mechanism limiting block 117, as long as it can help achieve stable installation of the circuit board 20 and / or mechanism 30.

[0082] It should be noted that the above embodiments are only preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural changes made based on the content of this application’s specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A printer, comprising a base, a circuit board, a mechanism, and a locking member, wherein the base includes a first housing and a second housing, the circuit board and the mechanism are disposed between the first housing and the second housing, at least one of the locking members passes through the second housing, the circuit board, and the first housing and locks the second housing, the first housing, and the circuit board, and / or at least one of the locking members passes through the second housing, the mechanism, and the first housing and locks the second housing, the first housing, and the mechanism.

2. The printer according to claim 1, wherein the first housing includes a circuit board mounting position and / or a mechanism mounting position, or the second housing includes a circuit board mounting position and / or a mechanism mounting position, wherein the mechanism is mounted in the mechanism mounting position and the circuit board is mounted in the circuit board mounting position.

3. The printer according to claim 2, wherein the circuit board mounting position includes a circuit board positioning pin, the circuit board includes a first positioning hole, the first positioning hole cooperates with the circuit board positioning pin, and / or, the mechanism mounting position includes a mechanism positioning pin, the mechanism includes a second positioning hole, the second positioning hole cooperates with the mechanism positioning pin.

4. The printer according to claim 3, wherein the circuit board positioning pin includes a first threaded hole, the locking member passes through the second housing, the first positioning hole and the first threaded hole are connected to lock the first housing, the second housing and the circuit board, and / or, the movement positioning pin includes a second threaded hole, the locking member passes through the second housing, the second positioning hole and the second threaded hole are connected to lock the first housing, the second housing and the movement.

5. The printer according to claim 1, wherein the first housing includes a first side, a second side, and a first opening and a second opening connecting the first side and the second side, the first opening and the second opening being disposed opposite to each other, the mechanism and / or circuit board being disposed on the first side, the mechanism including a printhead assembly and a rubber roller assembly disposed opposite to each other, the rubber roller assembly and / or the printhead assembly being movably disposed relative to the mechanism, and the rubber roller assembly and the printhead assembly being exposed to the second side through the first opening and the second opening.

6. The printer according to claim 5, wherein the first housing further includes a third opening, the roller assembly includes a first end with a roller and a second end opposite to the first end, the first end being exposed to the second side through the first opening, and the second end being exposed to the second side through the third opening; or, the printhead assembly includes a third end with a thermal sheet and a fourth end opposite to the third end, the third end being exposed to the second side through the first opening, and the fourth end being exposed to the second side through the third opening.

7. The printer of claim 6, further comprising a top cover detachably connected to the first housing on a second side of the first housing, the top cover including a pressing portion capable of passing through the third opening and abutting against a second end of the roller assembly or a fourth end of the printhead assembly, thereby causing the roller assembly to move relative to the mechanism to abut against the printhead assembly, or causing the printhead assembly to move relative to the mechanism to abut against the roller assembly.

8. The printer according to claim 7, wherein the pressing part is an arc-shaped protrusion with a raised surface, the third opening includes a first side opening and a second side opening that are bent, the first side opening being perpendicular to the second side opening, and correspondingly, the second end of the rubber roller assembly is provided with an arc-shaped groove that matches the arc-shaped protrusion, and when the arc-shaped protrusion and the arc-shaped groove are fitted together at the third opening, the core is fixed along the locking direction; or, the fourth end of the printhead assembly is provided with an arc-shaped groove that matches the arc-shaped protrusion, and when the arc-shaped protrusion and the arc-shaped groove are fitted together at the third opening, the core is fixed along the locking direction.

9. The printer according to any one of claims 1-8, wherein at least a portion of the circuit board is located between the mechanism and the first housing.

10. The printer according to claim 1, wherein the second housing includes a third side and a fourth side, the circuit board and / or the mechanism is located on the third side, the second housing further includes a battery mounting portion disposed on the fourth side, and the base further includes a third housing, the third housing being detachably connected to the second housing on the fourth side of the second housing.

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