Small printer core convenient to install

Abstract

The utility model provides a small-sized printer core convenient to install, which comprises a bracket, a printing device and a limiting elastic sheet, and is characterized in that the printing device is arranged on the bracket and is movably connected with the bracket; the limiting elastic piece is arranged on the support, and the limiting elastic piece limits the printing device on the support and applies elastic force to the printing device. According to the small-sized printer core, the limiting elastic sheet is arranged to replace an existing spring, only the limiting elastic sheet needs to be installed on the support and elastic force is applied to the printing device, rapid installation is achieved, and the installation efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of thermal printer accessories, and in particular to a small printer core that is easy to install. Background Technology

[0002] A typical thermal printer mechanism includes a frame, a motor, a transmission gear set, and a rotatable rubber roller and printhead base plate mounted on the frame. The printhead base plate is equipped with a thermal printhead. During operation, the motor drives the transmission gear set and transmits power to the rubber roller, causing it to rotate. This, in turn, moves the printing paper through the paper feed channel between the rubber roller and the thermal printhead. During printing, a spring applies elastic force to the printhead base plate to press the thermal printing paper firmly against the surface of the rubber roller, ensuring good printing results.

[0003] However, the installation of springs is rather complicated, especially for small printer cartridges, where the installation process is even more inconvenient and inefficient.

[0004] In view of this, the inventors specifically designed a small printer core that is easy to install, and this invention arises from this. Utility Model Content

[0005] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a small printer cartridge that is easy to install. By setting a limiting spring instead of the existing spring, the limiting spring can be installed on the bracket and the elastic force is applied to the printing device, thus overcoming the defects caused by the existing spring-mounted installation.

[0006] The present invention provides a small, easy-to-install printer core, comprising:

[0007] support;

[0008] A printing device, which is mounted on the support and is movably connected to the support;

[0009] A limiting spring is provided on the bracket, which restricts the printing device on the bracket and applies elastic force to the printing device.

[0010] The miniature printer core of this invention replaces the existing spring with a limiting spring. Simply install the limiting spring on the bracket and apply elastic force to the printing device to achieve quick installation and improve installation efficiency.

[0011] In some embodiments of this utility model, the printing device includes a substrate disposed on the support and a thermal head disposed on the substrate.

[0012] In some embodiments of this utility model, the printer core further includes a rubber roller, which is disposed on the bracket corresponding to the printing device and is rotatably connected to the bracket.

[0013] When printing with thermal paper, it passes between the thermal print head and the printing roller.

[0014] In some embodiments of this utility model, the printer core further includes a driving device for driving the rubber roller to rotate on the bracket. The driving device includes a driving motor disposed on the bracket, a first gear disposed on the output end of the driving motor, a second gear disposed on one end of the rubber roller, and a gear set disposed on the bracket. The driving motor drives the rubber roller to rotate through the gear set.

[0015] In some embodiments of this utility model, a first gear is provided at the output end of the drive motor, a second gear is provided at one end of the rubber roller, and the gear set includes a third gear, a fourth gear, and a fifth gear that are rotatably connected to the bracket, wherein the first gear meshes with the third gear, the third gear meshes with the fourth gear, and the fourth gear meshes with the fifth gear.

[0016] In some embodiments of this utility model, the bracket is also provided with a groove for mounting a rubber roller.

[0017] In some embodiments of this utility model, the bracket is provided with two mounting slots for placing the printing device, and mounting steps are provided on both sides of the printing device corresponding to the two mounting slots.

[0018] In some embodiments of this utility model, the mounting steps are disposed on both sides of the substrate.

[0019] In some embodiments of this utility model, the bracket is further provided with a guide channel for placing the mounting step into the mounting groove, the guide channel connecting the outer surface of the bracket to the mounting groove.

[0020] In some embodiments of this utility model, the limiting spring has a first elastic portion and a second elastic portion, both of which press against the printing device.

[0021] In some embodiments of this utility model, the limiting spring includes a main body, wherein the first elastic part and the second elastic part are both disposed on the same side of the main body, and the elastic force of the first elastic part is greater than the elastic force of the second elastic part.

[0022] In some embodiments of this utility model, the first elastic part is further provided with elastic protrusions, and a boss is provided on the substrate of the printing device. The elastic protrusions abut against the boss to apply pressure to the substrate.

[0023] In some embodiments of this utility model, the bracket is further provided with a positioning step, and the limiting spring is provided with a positioning groove corresponding to the positioning step.

[0024] In some embodiments of this utility model, the printer core is further provided with a ribbon cable assembly connected to the printing device, and a sensor is also provided on the ribbon cable assembly. The ribbon cable assembly is mounted on the bracket by a limiting spring.

[0025] In some embodiments of this utility model, the bracket is provided with a clearance hole for avoiding the sensor, and the limiting spring also has a pressing part for restricting the ribbon cable assembly to the bracket.

[0026] In some embodiments of this utility model, the bracket is further provided with a fixing column, the fixing column is provided with an internal threaded hole, and a bolt passes through the limiting spring and is connected to the internal threaded hole. Attached Figure Description

[0027] The accompanying drawings, which are provided to further illustrate the present invention and constitute a part of the present invention, illustrate exemplary embodiments of the present invention and are used to explain the present invention, but do not constitute an undue limitation of the present invention.

[0028] in:

[0029] Figure 1 This is a schematic diagram of the structure of the miniature printer core of this utility model. Figure 1 ;

[0030] Figure 2 This is a schematic diagram of the structure of the miniature printer core of this utility model. Figure 2 ;

[0031] Figure 3 This is an exploded diagram of the miniature printer cartridge of this utility model. Figure 1 ;

[0032] Figure 4 This is a partial cross-sectional view of the miniature printer core of this utility model;

[0033] Figure 5 This is an exploded diagram of the miniature printer cartridge of this utility model. Figure 2 ;

[0034] Figure 6 This is a structural schematic diagram of the bracket of this utility model;

[0035] Figure 7 This is a schematic diagram of the structure of the limiting spring of this utility model.

[0036] Label Explanation:

[0037] 10. Bracket; 11. Mounting slot; 12. Guide channel; 13. Slot; 14. Positioning step; 15. Clearance hole; 16. Fixing post; 161. Internal threaded hole; 20. Printing device; 21. Base plate; 211. Mounting step; 212. Boss; 22. Thermal head; 30. Limiting spring; 31. Main body; 311. Positioning groove; 32. First elastic part; 321. Elastic protrusion; 33. Second elastic part; 34. Pressing part; 40. Rubber roller; 50. Drive device; 51. Drive motor; 52. First gear; 53. Second gear; 54. Gear set; 541. Third gear; 542. Fourth gear; 543. Fifth gear; 60. Cable assembly; 61. Sensor; 70. Bolt. Detailed Implementation

[0038] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0039] Please see Figures 1 to 7 This invention relates to a small, easy-to-install printer cartridge, comprising a bracket 10, a printing device 20, and a limiting spring 30. The printing device 20 is mounted on and movably connected to the bracket 10. The limiting spring 30 is mounted on the bracket 10, restricting the printing device 20 to the bracket 10 and applying a spring force to the printing device 20. This small printer cartridge replaces the existing spring with a limiting spring 30, allowing for quick installation and improved installation efficiency simply by mounting the limiting spring 30 on the bracket 10 and applying a spring force to the printing device 20.

[0040] Please refer to the details. Figure 1 , 2 The printing device 20 includes a substrate 21 disposed on a support 10 and a thermal printhead 22 disposed on the substrate 21. The printer core also includes a rubber roller 40, which is disposed on the support 10 corresponding to the printing device 20 and rotatably connected to the upper support 10. During printing, thermal paper passes between the thermal printhead 22 and the rubber roller 40.

[0041] Please refer to the details. Figure 1 , 5The printer module also includes a drive unit 50, which drives the rubber roller 40 to rotate on the bracket 10. The drive unit 50 includes a drive motor 51 mounted on the bracket 10, a first gear 52 mounted on the output end of the drive motor 51, a second gear 53 mounted on one end of the rubber roller 40, and a gear set 54 mounted on the bracket 10. The drive motor 51 drives the rubber roller 40 to rotate via the gear set 54. Specifically, the first gear 52 is mounted on the output end of the drive motor 51, the second gear 53 is mounted on one end of the rubber roller 40, and the gear set 54 includes a third gear 541, a fourth gear 542, and a fifth gear 543 rotatably connected to the bracket 10. The first gear 52 meshes with the third gear 541, the third gear 541 meshes with the fourth gear 542, and the fourth gear 542 meshes with the fifth gear 543. When the rubber roller 40 is mounted on the bracket 10, the fifth gear 543 meshes with the second gear 53. Therefore, the drive motor 51 drives the first gear 52, and in turn drives the third gear 541, the fourth gear 542 and the fifth gear 543 to rotate, which in turn drives the second gear 53 to rotate, so that the rubber roller 40 rotates on the bracket 10, thereby realizing the paper feeding. The third gear 541, the fourth gear 542 and the fifth gear 543 can be reduction gears and can be locked to the bracket 10 by screws.

[0042] Please refer to the details. Figure 3 The bracket 10 is also provided with a slot 13 for mounting the rubber roller 40. The slot 13 allows the central axis of the rubber roller 40 to rotate within it, and prevents the rubber roller 40 from detaching from the slot 13 without external force. The bracket 10 is provided with two mounting slots 11 for placing the printing device 20. Mounting steps 211 are provided on both sides of the printing device 20 corresponding to the two mounting slots 11. The mounting steps 211 are located on both sides of the substrate 21. The bracket 10 is also provided with a guide channel 12 for placing the mounting steps 211 into the mounting slots 11. The guide channel 12 connects the outer surface of the bracket 10 to the mounting slots 11. The printing device 20 is placed into the mounting slots 11 through the guide channel 12. Specifically, the two mounting steps 211 are placed into the two channels and slide into the mounting slots 11. The guide channel 12 and the mounting slots 11 form an angle, which is an obtuse angle. This not only facilitates the placement of the substrate 21, but also, in conjunction with the limiting spring 30, better restricts it within the mounting slots 11.

[0043] Please refer to the details. Figure 3 , 7The limiting spring 30 has a first elastic portion 32 and a second elastic portion 33, both of which press against the printing device 20. The limiting spring 30 includes a main body 31, wherein the first elastic portion 32 and the second elastic portion 33 are both disposed on the same side of the main body 31, and the elastic force of the first elastic portion 32 is greater than that of the second elastic portion 33. The magnitude of the elastic force can be adjusted by changing its length, bending shape, or other methods. The second elastic portion 33 can be located inside the first elastic portion 32, and there is a gap between them. The second elastic portion 33 presses against the substrate 21 on one side of its long side, while the pressing point of the first elastic portion 32 is away from the side pressed by the second elastic portion 33. Further, the first elastic portion 32 is provided with an elastic protrusion 321, corresponding to a boss 212 on the substrate 21 of the printing device 20. The elastic protrusion 321 abuts against the boss 212 to apply pressure to the substrate 21. The bracket 10 is also provided with a positioning step 14, and the limiting spring 30 is provided with a positioning groove 311 corresponding to the positioning step 14. Of course, the positioning step 14 can also be provided on the limiting spring 30, and the positioning groove 311 can be provided on the bracket 10. The positioning step 14 and the positioning groove 311 are used to position the limiting spring 30, so as to facilitate the precise installation of the limiting spring 30. Furthermore, the positioning groove 311 is provided on both sides of the main body 31.

[0044] Please refer to the details. Figure 4 , 5 The printer module also includes a ribbon cable assembly 60 connected to the printing device 20. The ribbon cable assembly 60 is equipped with a sensor 61 (e.g., an optocoupler for identifying thermal paper). The ribbon cable assembly 60 is mounted on the bracket 10 via a limiting spring 30. The bracket 10 has a clearance hole 15 for avoiding the sensor 61, and the limiting spring 30 also has a pressing part 34 for securing the ribbon cable assembly 60 to the bracket 10.

[0045] Please refer to the details. Figure 6 The bracket 10 is also provided with a fixing post 16, which has an internal threaded hole 161. The bolt 70 passes through the limiting spring 30 and is connected to the internal threaded hole 161. When the limiting spring 30 is installed, the bolt 70 passes through the main body 31. When the bolt 70 is tightened, the printing device 20, the sensor 61 and the ribbon cable group 60 are simultaneously restricted to the bracket 10. At the same time, the first elastic part 32 and the second elastic part 33 are provided so that sufficient pressure is applied to the printing device 20 during the printing process, and the printing device 20 presses the thermal paper onto the surface of the rubber roller 40.

[0046] Please refer to the details. Figure 7The limiting spring 30 of this utility model adopts an integrated structure and is formed by stamping or stamping combined with bending to make each part have a corresponding function and achieve the corresponding effect. It not only completely replaces the effect of the spring, but can also be used to press the ribbon cable group 60 and the sensor 61, further improving the installation efficiency.

[0047] The installation method of the miniature printer cartridge of this utility model is as follows:

[0048] First, place the substrate 21 with the thermal head plate 22 into the mounting groove 11 through the guide channel 12. Then, attach the ribbon cable group 60 with the sensor 61 to the bracket 10. Next, place the limiting spring 30 on the bracket 10 by positioning. Then, use the bolt 70 to pass through the main body 31 and screw it into the fixing post 16 to achieve quick installation.

[0049] In summary, the miniature printer core of this utility model replaces the existing spring with a limiting spring. It only requires installing the limiting spring on the bracket and applying elastic force to the printing device, which achieves quick installation and improves installation efficiency.

[0050] The present invention has been described above with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A small, easy-to-install printer cartridge, characterized in that, include: support; A printing device, wherein the printing device is mounted on the support; A limiting spring is provided on the bracket, which restricts the printing device on the bracket and applies elastic force to the printing device.

2. The easily installable miniature printer cartridge according to claim 1, characterized in that, The printing device includes a substrate disposed on the support and a thermal printhead disposed on the substrate.

3. A small, easy-to-install printer cartridge according to claim 1, characterized in that, The printer module also includes a rubber roller, which is mounted on the bracket corresponding to the printing device and is rotatably connected to the bracket. When printing with thermal paper, it passes between the thermal print head and the printing roller.

4. A small, easy-to-install printer cartridge according to claim 1, characterized in that, The printer core also includes a drive device for driving the rubber roller to rotate on the bracket. The drive device includes a drive motor mounted on the bracket, a first gear mounted on the output end of the drive motor, a second gear mounted on one end of the rubber roller, and a gear set mounted on the bracket. The drive motor drives the rubber roller to rotate through the gear set.

5. A small, easy-to-install printer cartridge according to claim 1, characterized in that, The bracket is provided with two mounting slots for placing the printing device, and mounting steps are provided on both sides of the printing device corresponding to the two mounting slots.

6. A small, easy-to-install printer cartridge according to claim 1, characterized in that, The bracket is also provided with a guide channel for placing the mounting step into the mounting groove, and the guide channel connects the outer surface of the bracket to the mounting groove.

7. A small, easy-to-install printer cartridge according to claim 1, characterized in that, The limiting spring has a first elastic part and a second elastic part, both of which press against the printing device.

8. A small, easy-to-install printer cartridge according to claim 1, characterized in that, The bracket is also provided with a positioning step, and the limiting spring is provided with a positioning groove corresponding to the positioning step.

9. A small, easy-to-install printer cartridge according to claim 1, characterized in that, The printer module is also equipped with a ribbon cable assembly that connects to the printing device. The ribbon cable assembly is also equipped with a sensor and is mounted on a bracket by a limiting spring.

10. A small, easy-to-install printer cartridge according to claim 1, characterized in that, The bracket is also provided with a fixing column, which has an internal threaded hole. A bolt passes through the limiting spring and connects to the internal threaded hole.

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