A thermal printer with a main board and a core assembled as a whole

Abstract

The utility model provides a kind of thermal printer of mainboard and core integrated assembly, including base, core seat, mainboard, cover, rubber roll and thermosensitive sheet, the bottom edge of core seat is provided with two buckles, positioning column and fixed hole, mainboard is installed in the bottom of core seat, buckle is engaged with first edge, first support part is adjacent with first edge, positioning column and positioning hole gap cooperation, second support part is adjacent with second edge, connecting hole is fixedly connected with fixed hole, third support part is adjacent with third edge.The case is preassembled by mainboard and core seat through buckle, positioning column, fixed hole and multiple support parts, form integrated module, then overall installation is to base, to greatly reduce assembly step and time.And each functional module is directly welded on mainboard and correspondingly embedded in the relevant hole position of base, without additional wiring and fixing, further simplifying assembly process.

Description

Technical Field

[0001] This utility model relates to the field of thermal printing, and in particular to a thermal printer with an integrated motherboard and mechanism. Background Technology

[0002] Traditional thermal printers typically use a separate assembly structure for the mainboard and the printhead. The mainboard is fixed separately to the base or housing, while the printhead housing houses the thermal sheet and rollers. The printhead is then installed on the base and connected to the mainboard via a data cable. However, this assembly method has the following drawbacks: Firstly, the assembly process is cumbersome. The motherboard and the main unit need to be positioned and fixed separately, and cables need to be connected, which increases assembly time and labor costs. Secondly, the structural stability is poor. There is no integrated positioning support between the motherboard and the main unit, which is prone to relative displacement during vibration or long-term use, affecting printing accuracy. Furthermore, the space utilization efficiency is low. The split layout leads to complex internal wiring, occupies a large space, and is not conducive to the miniaturization design of printers. There are also inconveniences in maintenance and debugging. The motherboard and the main unit are separate, and multiple structures need to be disassembled when repairing or replacing any component, resulting in poor maintainability.

[0003] Therefore, it is necessary to design an integrated thermal printer that can simplify the assembly process, improve structural stability, and take cost control into account. Utility Model Content

[0004] The purpose of this invention is to provide a thermal printer in which the motherboard and the main unit are integrated.

[0005] To achieve the purpose of this utility model, a thermal printer with an integrated mainboard and mechanism is provided, including a base, a mechanism seat, a mainboard, a cover, a rubber roller, and a thermal sheet. The mechanism seat is mounted on the base, the thermal sheet is disposed on the mechanism seat, the rubber roller is disposed on the cover, the cover is located above the base and connected to the base, and a paper output port is formed between the cover and the base. The thermal sheet and the rubber roller face each other and form a paper feeding channel, which communicates with the paper output port. The bottom edge of the mechanism seat is provided with two buckles, a positioning post, and a fixing hole. The two buckles are located on both sides of the paper width direction, the positioning post and the fixing hole are located on both sides of the paper width direction, and the two buckles are located on the first side of the paper length direction. The positioning post and fixing hole are located on the second side along the paper length direction; a first support part is provided on the side of the buckle at the bottom edge, a second support part is provided on the side of the positioning post at the bottom edge, and a third support part is provided on the side of the fixing hole at the bottom edge; the main board is installed at the bottom of the mechanism base, a first edge is provided on the first side along the paper length direction, a second edge is provided on the second side along the paper length direction, and a positioning hole and a connecting hole are provided on the second edge of the main board; the buckle engages with the first edge, the first support part is adjacent to the first edge, the positioning post and the positioning hole are fitted with a clearance, the second support part is adjacent to the second edge, the connecting hole is fixedly connected to the fixing hole, and the third support part is adjacent to the second edge.

[0006] A further solution is to weld a paper detection sensor onto the second edge of the motherboard, and to provide a paper guide surface on the base below the thermal sheet, with a paper detection through hole on the paper guide surface, and to place the paper detection sensor inside the paper detection through hole.

[0007] A further proposed solution is to solder a trigger module onto the first edge of the motherboard, and to have a button on the front end of the base along the length of the paper. The button is located outside the trigger module and adjacent to it.

[0008] A further solution is to solder an indicator light onto the first edge of the motherboard. The indicator light is located inside the button and illuminates towards the button.

[0009] A further proposed solution is to have a third edge on the first side of the paper width direction on the motherboard, and to solder a power switch on the third edge of the motherboard. The base has a switch hole on the side end face in the paper width direction, and the power switch is located inside the switch hole.

[0010] A further proposed solution is to have a rubber roller drive motor installed on the movement base, and a clearance groove on the main board at the third edge, with the rubber roller drive motor located inside the clearance groove.

[0011] A further proposed solution is to have a data interface soldered onto the motherboard, with the data interface facing downwards, and a data opening on the bottom of the base, with the data interface located at the data opening.

[0012] A further improvement is that the base has a cable space extending along the length of the paper on its bottom surface. The cable space is connected to the data opening. The base has a wire clip on the inner side wall of the cable space based on the width of the paper. The wire clip has a wire groove extending along the length of the paper.

[0013] A further solution is to set two line clips on the same side of the paper width direction, with a baffle between the two line clips extending along the paper length direction.

[0014] A further improvement is to install line clips on both sides of the paper width direction.

[0015] The beneficial effects of this utility model are that the motherboard and the mechanism base are pre-assembled through snap-fits, positioning posts, fixing holes, and multiple support parts to form an integrated module, which is then installed onto the base as a whole, thereby significantly reducing assembly steps and time. Furthermore, each functional module is directly soldered to the motherboard and correspondingly fitted into the relevant holes on the base, eliminating the need for additional wiring and fixing, further simplifying the assembly process.

[0016] In addition, the latch engages with the first edge of the motherboard, the positioning post and the positioning hole are fitted with a clearance, and the first, second and third support parts support the edges of the motherboard respectively, forming multi-directional limiting and effectively improving the stability of the motherboard. Furthermore, the motherboard clearance groove accommodates the rubber roller drive motor, the data interface is arranged downwards at the data opening of the base, and the power switch is sideways in the switch hole, making full use of the three-dimensional space and facilitating product miniaturization.

[0017] Furthermore, the base is equipped with cable space and wire grooves, baffles and wire clips, which enable orderly cable arrangement and outward extension. The integrated design reduces the number of connecting cables and independent fasteners, thereby reducing material costs. The assembly process is also simplified, reducing production labor costs. Attached Figure Description

[0018] Figure 1 This is a structural diagram of an embodiment of the thermal printer of this utility model.

[0019] Figure 2 This is a structural diagram of an embodiment of the thermal printer of this utility model with the cover opened.

[0020] Figure 3 This is a structural diagram of an embodiment of the thermal printer of this utility model from another perspective with the cover open.

[0021] Figure 4 This is a structural diagram of an embodiment of the thermal printer of this utility model from a bottom view.

[0022] Figure 5 This is a structural diagram of an embodiment of the thermal printer of this utility model, omitting part of the base.

[0023] Figure 6 This is an exploded view of the mechanism seat at the base of an embodiment of the thermal printer of this utility model.

[0024] Figure 7 This is an exploded view of the mainboard at the base of an embodiment of the thermal printer of this utility model.

[0025] Figure 8 This is a structural diagram of the motherboard in an embodiment of the thermal printer of this utility model.

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments. Detailed Implementation

[0027] Reference Figures 1 to 8 The thermal printer includes a base 11, a core 2, a main board 3, a cover 12, a rubber roller 121, and a thermal sheet 22. The core 2 is mounted on the base 11, the thermal sheet 22 is disposed on the core 2, the rubber roller 121 is disposed on the cover 12, the base 11 is provided with a paper tray 111, the cover 12 is located above the base 11 and connected to the base 11, and a paper outlet 10 is formed between the cover 12 and the base 11. The thermal sheet 22 and the rubber roller 121 are opposite to each other and form a paper feeding channel, which connects the paper tray 111 and the paper outlet 10.

[0028] The bottom edge 21 of the mechanism base 2 is provided with two buckles 23, a positioning post 24 and a fixing hole 25. The two buckles 23 are located on both sides of the paper width direction Y, the positioning post 24 and the fixing hole 25 are located on both sides of the paper width direction Y, the two buckles 23 are located on the first side of the paper length direction X, and the positioning post 24 and the fixing hole 25 are located on the second side of the paper length direction X.

[0029] The bottom edge 21 of the movement base 2 is provided with a first support part 231 on the side of the buckle 23, a second support part 241 on the side of the positioning post 24, and a third support part 251 on the side of the fixing hole 25.

[0030] The mainboard 3 is installed at the bottom of the mechanism base 2. The mainboard 3 has a first edge 31 on the first side of the paper length direction X, and a second edge 32 on the second side of the paper length direction X. The mainboard 3 has a positioning hole 321 and a connecting hole 322 at the second edge 32. The first edge 31 has two latches 311, which are distributed along the paper width direction Y. The latch 23 engages with the latches 311 of the first edge 31. The first support part 231 is adjacent to the first edge 31. The positioning hole 321 is arranged in a U-shape and has an opening. The positioning post 24 is clearance-fitted with the positioning hole 321. The second support part 241 is adjacent to the second edge 32. The connecting hole 322 and the fixing hole 25 can be fixedly connected by screws. The third support part 251 is adjacent to the second edge 32.

[0031] The motherboard 3 has a paper detection sensor 351 soldered on at the second edge 32. The base 11 has a paper guide surface 112 below the thermal sheet 22. The paper guide surface 112 has a paper detection through hole 113. The paper detection sensor 351 is located in the paper detection through hole 113.

[0032] The motherboard 3 has a trigger module 352 and two indicator lights 353 soldered on its first edge 31. The two indicator lights 353 are located on both sides of the trigger module 352. The base 11 has a button 14 on its front end face in the paper length direction X. The button 14 is located outside the trigger module 352 and adjacent to the trigger module 352. The indicator lights 353 are located inside the button 14 and emit light towards the button 14.

[0033] The main board 3 has a third edge 33 on the first side in the paper width direction Y. A power switch 331 is soldered onto the main board 3 at the third edge 33. The base 11 has a switch hole 15 on its side end face in the paper width direction Y, and the power switch 331 is located inside the switch hole 15. The mechanism base 2 is equipped with a rubber roller drive motor 26, which drives the rubber roller 121 to rotate through a drive gear. The main board 3 has a clearance groove 332 at the third edge 33, and the rubber roller drive motor 26 is located inside the clearance groove 332.

[0034] The motherboard 3 is soldered with multiple data interfaces 34, which are arranged downwards. The base 11 has a data opening on its bottom surface, and the data interfaces 34 are located at the data opening. The base 11 has a cable space 114 extending along the paper length direction X on its bottom surface. The cable space 114 is connected to the data opening. The base 11 has two wire clips 115 on the two inner side walls of the cable space 114 based on the paper width direction Y. The wire clips 115 have wire grooves 116 extending along the paper length direction X. There are two wire clips 115 on the same side of the paper width direction Y. A baffle 117 is provided between the two wire clips 115, and the baffle 117 extends along the paper length direction X.

[0035] As can be seen from the above, this design significantly reduces assembly steps and time by pre-assembling the motherboard and the chassis into an integrated module before installing it onto the base. Furthermore, the motherboard's stability is effectively enhanced by the snap-fit ​​mechanism that engages with the first edge of the motherboard, the gap between the positioning posts and holes, and the support from the first, second, and third supports that protect each edge of the motherboard. The base's bottom surface features cable management spaces and wire channels, along with baffles and cable clips, ensuring orderly cable routing and outward cable exit.

Claims

1. A thermal printer with an integrated motherboard and mechanism, comprising a base, a mechanism base, a motherboard, a cover, a rubber roller, and a thermal sheet, wherein the mechanism base is mounted on the base, the thermal sheet is disposed on the mechanism base, the rubber roller is disposed on the cover, the cover is located above the base and connected to the base, a paper output port is formed between the cover and the base, the thermal sheet and the rubber roller are opposite to each other and form a paper feeding channel, and the paper feeding channel is connected to the paper output port; Its features are: The bottom edge of the mechanism base is provided with two buckles, a positioning post and a fixing hole. The two buckles are located on both sides of the paper width direction, the positioning post and the fixing hole are located on both sides of the paper width direction, the two buckles are located on the first side of the paper length direction, and the positioning post and the fixing hole are located on the second side of the paper length direction. The bottom edge is provided with a first support part on the side of the buckle, the bottom edge is provided with a second support part on the side of the positioning post, and the bottom edge is provided with a third support part on the side of the fixing hole. The mainboard is installed at the bottom of the mechanism base. The mainboard has a first edge on a first side in the paper length direction and a second edge on a second side in the paper length direction. The mainboard has a positioning hole and a connection hole at the second edge. The buckle engages with the first edge, the first support portion is adjacent to the first edge, the positioning post is clearance-fitted with the positioning hole, the second support portion is adjacent to the second edge, the connecting hole is fixedly connected to the fixing hole, and the third support portion is adjacent to the second edge.

2. The thermal printer according to claim 1, characterized in that: The motherboard has a paper detection sensor welded to the second edge, the base has a paper guide surface below the thermal sheet, the paper guide surface has a paper detection through hole, and the paper detection sensor is disposed in the paper detection through hole.

3. The thermal printer according to claim 1, characterized in that: The motherboard has a trigger module soldered at the first edge, and the base has a button on the front end face of the paper along the length direction. The button is located outside the trigger module and adjacent to the trigger module.

4. The thermal printer according to claim 3, characterized in that: An indicator light is soldered onto the motherboard at the first edge. The indicator light is located inside the button and illuminates towards the button.

5. The thermal printer according to claim 1, characterized in that: The main board has a third edge on the first side in the paper width direction, and a power switch is welded to the third edge on the main board. The base has a switch hole on the side end face in the paper width direction, and the power switch is located in the switch hole.

6. The thermal printer according to claim 5, characterized in that: The mechanism base is equipped with a rubber roller drive motor, and the main board is provided with a clearance groove at the third edge, with the rubber roller drive motor located in the clearance groove.

7. The thermal printer according to any one of claims 1 to 6, characterized in that: The motherboard is soldered with a data interface facing downwards, and the base has a data opening on its bottom surface, with the data interface located at the data opening.

8. The thermal printer according to claim 7, characterized in that: The base has a cable space extending along the length of the paper on its bottom surface. The cable space is connected to the data opening. The base has a wire clip on the inner sidewall of the cable space based on the width of the paper. The wire clip has a wire groove extending along the length of the paper.

9. The thermal printer according to claim 8, characterized in that: Two line clips are provided on the same side of the paper width direction, and a baffle is provided between the two line clips, the baffle extending along the paper length direction.

10. The thermal printer according to claim 8, characterized in that: The line clips are provided on both sides of the paper width direction.

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