A print head structure for easy installation and a thermal printer core

Abstract

The utility model provides a printing head structure convenient to install, and the printing head is installed on the support, including setting up the head piece base plate of support, the both sides of inside support are provided with first clamping slot, the both sides of head piece base plate are provided with the first step of cooperation with first clamping slot, still be provided with the second step for resisting the head piece base plate below on the support, the printing head structure of the utility model, through setting up the first clamping slot and the first step of cooperation, set up second step simultaneously, make the head piece base plate below better be restricted on the support, realize quick and convenient assembly, the utility model still provides a thermal printer core.

Description

Technical Field

[0001] This utility model relates to the technical field of printer accessories, and in particular to an easy-to-install printhead structure and a thermal printer core. Background Technology

[0002] A typical thermal printer mechanism includes a frame, a motor, a transmission gear set, and a rotatable roller and printhead base mounted on the frame. The printhead base is fitted with a thermal printhead. During operation, the motor drives the transmission gear set, transmitting power to the roller to rotate it. This, in turn, moves the printing paper through the paper feed channel between the roller and the thermal printhead. During printing, a spring applies elastic force to the printhead base to press the thermal paper firmly against the roller surface, ensuring good printing results. However, existing mechanism assembly structures are overly cumbersome; for example, the printhead base is mounted on the frame via a pivot.

[0003] In view of this, the inventors have specifically designed an easy-to-install printhead structure and a thermal printer core, which leads to this invention. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a printhead structure that is easy to install. By setting a first slot and a first step that cooperate with each other, and simultaneously setting a second step, the printhead substrate is better constrained on the support, resulting in rapid assembly and overcoming the defects caused by the cumbersome assembly of current methods.

[0005] This utility model also proposes a thermal printer core.

[0006] According to the present invention, there is an easy-to-install printhead structure, which is mounted on a support and includes a printhead substrate disposed on the support.

[0007] The bracket has first slots on both sides inside, and the head plate substrate has first steps on both sides that cooperate with the first slots;

[0008] The support is also provided with a second step for abutting against the bottom of the head plate substrate.

[0009] The printhead structure of this utility model, by setting a first slot and a first step that cooperate with each other, and at the same time setting a second step, makes the bottom of the printhead substrate better restricted on the support, so as to achieve quick and convenient assembly.

[0010] In some embodiments of this utility model, a spring is also provided between the top of the head plate substrate and the support.

[0011] In some embodiments of this utility model, two springs are provided to generate elastic force on the top of the head plate substrate.

[0012] In some embodiments of this utility model, two second steps are provided, and they are respectively located close to the two first slots.

[0013] In some embodiments of this utility model, the bracket has two protrusions on its inner side, the first slot is disposed on the protrusions, and the protrusions are also provided with an avoidance channel communicating with the first slot.

[0014] In some embodiments of this utility model, the bracket is further provided with a first limiting platform for limiting the position of one end of the spring, and the head plate substrate is provided with a second limiting platform for limiting the position of the other end of the spring.

[0015] In some embodiments of this utility model, a thermal head sheet is also provided on the head sheet substrate.

[0016] According to the present invention, a thermal printer core includes a printhead structure, which adopts the construction of a printhead structure.

[0017] According to the present invention, a thermal printer core further includes a rubber roller disposed on the bracket, the rubber roller being disposed opposite to the thermal head plate and forming a paper feeding channel between them.

[0018] According to the present invention, a thermal printer core is provided, wherein one end of the rubber roller is rotatably connected to a bracket, and the other end is connected to the bracket via a connector. The connector is disposed on the bracket, and the other end of the rubber roller is rotatably connected to the connector.

[0019] According to the present invention, a thermal printer core includes a connector comprising a rotating part for rotatably connecting to one end of a rubber roller, a limiting part disposed at one end of the rotating part, and a first buckle disposed on the limiting part. The rotating part is embedded in a bracket, and the first buckle is fastened to the bracket.

[0020] According to the present invention, a thermal printer core further includes an optical coupler assembly disposed on a bracket. The bracket is provided with a mounting groove for mounting the optical coupler assembly and a second buckle for confining the optical coupler assembly within the mounting groove.

[0021] According to the present invention, a thermal printer cartridge is provided, which 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.

[0022] According to the present invention, a thermal printer core includes a gear set comprising a third gear, a fourth gear, and a fifth gear rotatably connected to a support, wherein the first gear meshes with the third gear, the third gear meshes with the fourth gear, the fourth gear meshes with the fifth gear, and the fifth gear meshes with the second gear. Attached Figure Description

[0023] 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.

[0024] in:

[0025] Figure 1 This is a schematic diagram of the printhead structure of this utility model. Figure 1 ;

[0026] Figure 2 This is a schematic diagram of the structure of the bracket of this utility model. Figure 1 ;

[0027] Figure 3 This is a schematic diagram of the structure of the bracket of this utility model. Figure 2 ;

[0028] Figure 4 This is a utility model Figure 2 A magnified view of a portion of the image;

[0029] Figure 5 This is a schematic diagram of the printhead structure of this utility model. Figure 2 ;

[0030] Figure 6 This is a structural schematic diagram of the connector of this utility model;

[0031] Figure 7 This is a schematic diagram of the structure of the thermal printer core of this utility model. Figure 1 ;

[0032] Figure 8 This is a cross-sectional schematic diagram of the thermal printer core of this utility model;

[0033] Figure 9 This is a schematic diagram of the structure of the thermal printer core of this utility model. Figure 2 ;

[0034] Figure 10 This is a schematic diagram of the structure of the thermal printer core of this utility model. Figure 3 .

[0035] Label Explanation:

[0036] 10. Bracket; 101. Protrusion; 102. Clearance channel; 11. First slot; 12. Second step; 13. First limiting platform; 14. Mounting groove; 15. Second buckle; 20. Head plate substrate; 21. First step; 22. Clearance groove; 23. Second limiting platform; 30. Thermal head plate; 40. Spring; 50. Rubber roller; 60. Connector; 61. Rotating part; 62. Limiting part; 63. First buckle; 631. Extension part; 632. Buckle part; 70. Optocoupler assembly; 80. Drive device; 81. Drive motor; 82. First gear; 83. Second gear; 84. Gear set; 841. Third gear; 842. Fourth gear; 843. Fifth gear. Detailed Implementation

[0037] 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. Example 1

[0038] Please see Figures 1 to 5 This is a printhead structure for easy installation, as an embodiment 1 of the present invention. The printhead is mounted on a bracket 10 and includes a printhead substrate 20 disposed on the bracket 10. First slots 11 are provided on both sides inside the bracket 10, and first steps 21 that cooperate with the first slots 11 are provided on both sides of the printhead substrate 20. A second step 12 is also provided on the bracket 10 to abut the lower part of the printhead substrate 20. The printhead structure of the present invention, by providing the mutually cooperating first slots 11 and first steps 21, and simultaneously providing the second step 12, makes the lower part of the printhead substrate 20 better restricted on the bracket 10, thereby achieving quick and convenient assembly.

[0039] Please refer to the details. Figure 1 A spring 40 is also provided between the top of the head plate substrate 20 and the support 10. Two springs 40 are provided to generate elastic force on the top of the head plate substrate 20 so that the thermal head plate 30 on the head plate substrate 20 can better abut against the rubber roller 50.

[0040] Please refer to the details. Figure 5 The two first steps 21 are located below the two sides of the head substrate 20. Specifically, a relief groove 22 is provided on both sides of the head substrate 20 near the bottom to form the first step 21.

[0041] Please refer to the details. Figure 2 , 3Two second steps 12 are provided, each located close to one of the two first slots 11. Two protrusions 101 are located on the inner side of the bracket 10, with the first slots 11 positioned on each protrusion 101. Each protrusion 101 also has a clearance channel 102 communicating with the first slots 11. During installation, the headplate 20 is angled slightly (to avoid the second steps 12), allowing the first step 21 to enter the first slot 11 through the clearance channel 102. Then, a spring 40 is installed between the first limiting platform 13 and the second limiting platform 23. Under the action of the spring 40, the headplate 20 can abut against the second steps 12.

[0042] Please refer to the details. Figure 2 , 5 The bracket 10 is also provided with a first limiting platform 13 for limiting the position of one end of the spring 40, and the head plate substrate 20 is provided with a second limiting platform 23 for limiting the position of the other end of the spring 40. By setting the first limiting platform 13 and the second limiting platform 23, the spring 40 is better limited between the head plate substrate 20 and the bracket 10.

[0043] Please refer to the details. Figure 5 The thermal head plate 30 is also provided on the head plate substrate 20, and the thermal head plate 30 is also electrically connected to a flexible busbar. Example 2

[0044] Please see Figures 1 to 10 This is a thermal printer core as an embodiment 2 of the present utility model, including a printhead structure, which adopts the construction of a printhead structure.

[0045] Please refer to the details. Figure 5 , 67. The thermal printer cartridge also includes a rubber roller 50 disposed on the bracket 10. The rubber roller 50 is disposed opposite to the thermal printhead 30, forming a paper feeding channel between them. One end of the rubber roller 50 is rotatably connected to the bracket 10, and the other end is connected to the bracket 10 via a connector 60. The connector 60 is disposed on the bracket 10, and the other end of the rubber roller 50 is rotatably connected to the connector 60. The connector 60 includes a rotating part 61 for rotatably connecting to one end of the rubber roller 50, a limiting part 62 disposed at one end of the rotating part 61, and a first latch 63 disposed on the limiting part 62. The rotating part 61 is embedded in the bracket 10, and the first latch 63 is fastened to the bracket 10. The first latch 63 includes an extension part 631 disposed on the limiting part 62 and a latching part 632 disposed on the extension part 631 and away from the limiting part 62. During installation, the rubber roller 50 is first placed on the bracket 10, with one end connected to the bracket 10. Then, the rotating part 61 of the connector 60 is sleeved on the other end of the rubber roller 50, and external force is applied to the connector 60. The snapping part 632 of the first buckle 63 can be fastened to the inside of the bracket 10, realizing the quick and convenient installation of the rubber roller 50. At the same time, the limiting part 62 cooperates with the snapping part 632 to better restrict the connector 60 on the bracket 10. The limiting part 62 can adopt a ring structure to ensure that the connector 60 is installed stably. The first snap 63 is located on the outside of the rotating part 61. Specifically, the first buckle 63 is arranged along the central axis of the rotating part 61 and has a certain gap with the outer wall of the rotating part 61. The extension 631 of the first buckle 63 faces the end of the rotating part 61 away from the limiting part 62 (that is, the limiting part is set at one end of the rotating part, and the buckle part is close to the other end of the rotating part). Moreover, the extension 631 has a certain elasticity so that it can pass through the bracket 10 and be fastened to the bracket 10. The use of the plug-in part 60 not only makes the installation of the rubber roller 50 quick and convenient, but also makes the rubber roller 50 stable to be installed on the bracket 10, ensuring the smooth rotation of the rubber roller 50 and improving the printing effect.

[0046] Please refer to the details. Figure 9 , 10 The thermal printer cartridge also includes an optocoupler assembly 70 mounted on a bracket 10. The bracket 10 has a mounting slot 14 for mounting the optocoupler assembly 70, and a second latch 15 for securing the optocoupler assembly 70 within the mounting slot 14. Two optocouplers 70 can be used, with their sensing portions facing the paper feed path to identify whether thermal paper is present in the paper feed path or to identify the type of thermal paper in the paper feed path. The structure of the second latch 15 can be similar to the first latch 63, allowing for quick and convenient installation of the optocoupler assembly 70.

[0047] Please refer to the details. Figure 5 , 7The thermal printer cartridge also includes a drive unit 80, which drives the rubber roller 50 to rotate on the bracket 10. The drive unit 80 includes a drive motor 81 mounted on the bracket 10, a first gear 82 mounted on the output end of the drive motor 81, a second gear 83 mounted on one end of the rubber roller 50, and a gear set 84 mounted on the bracket 10. The drive motor 81 drives the rubber roller 50 to rotate via the gear set 84. The gear set 84 includes a third gear 841, a fourth gear 842, and a fifth gear 843 rotatably connected to the bracket 10. The first gear 82 meshes with the third gear 841, the third gear 841 meshes with the fourth gear 842, and the fourth gear 842 meshes with the fifth gear 843. When the rubber roller 50 is mounted on the bracket 10, the fifth gear 843 meshes with the second gear 83. Therefore, the drive motor 81 drives the first gear 82, and in turn drives the third gear 841, the fourth gear 842 and the fifth gear 843 to rotate, which in turn drives the second gear 83 to rotate, so that the rubber roller 50 rotates on the bracket 10, thereby realizing paper feeding. The third gear 841, the fourth gear 842 and the fifth gear 843 can be reduction gears and can be locked to the bracket 10 by screws.

[0048] Please refer to the details. Figure 8 The rubber roller 50 is also equipped with a knob at one end of the connector 60 so that the rubber roller 50 can be manually rotated. Specifically, when the rubber roller 50 is installed in place, the knob is fixed at the end of the rubber roller 50. When paper jam occurs, the knob can be manually rotated to clear the paper jam and effectively solve the paper jam problem.

[0049] In summary, the printhead structure of this invention, by setting a first slot and a first step that cooperate with each other, and simultaneously setting a second step, better restricts the lower part of the printhead substrate to the support, enabling quick and convenient assembly. It also includes a connector for quick installation of the rubber roller, and a second latch for quick and convenient installation of the optocoupler assembly. Therefore, the overall assembly of the printhead is more convenient and efficient.

[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 printhead structure for easy installation, wherein the printhead is mounted on a bracket (10), characterized in that, Includes a head plate substrate (20) disposed on a support (10); The bracket (10) has first slots (11) on both sides inside, and the head plate substrate (20) has first steps (21) on both sides that cooperate with the first slots (11). The bracket (10) is also provided with a second step (12) for abutting against the bottom of the head plate substrate (20).

2. The easy-to-install printhead structure according to claim 1, characterized in that, A spring (40) is also provided between the top of the head plate substrate (20) and the support (10).

3. The easy-to-install printhead structure according to claim 1, characterized in that, The bracket (10) has two protrusions (101) on its inner side, and the first slot (11) is provided on the protrusions (101). The protrusions (101) are also provided with a clearance channel (102) that communicates with the first slot (11).

4. The easy-to-install printhead structure according to claim 1, characterized in that, The bracket (10) is also provided with a first limiting platform (13) for limiting the position of one end of the spring (40), and the head plate substrate (20) is provided with a second limiting platform (23) for limiting the position of the other end of the spring (40).

5. The easy-to-install printhead structure according to claim 1, characterized in that, A thermal headplate (30) is also provided on the headplate substrate (20).

6. A thermal printer cartridge, characterized in that, The printhead structure described in any one of claims 1-4 is adopted.

7. The thermal printer cartridge according to claim 6, characterized in that, The thermal printer core also includes a rubber roller (50) disposed on the bracket (10), the rubber roller (50) being disposed opposite to the thermal head plate (30) and forming a paper feeding channel between them.

8. The thermal printer cartridge according to claim 7, characterized in that, One end of the rubber roller (50) is rotatably connected to the bracket (10), and the other end is connected to the bracket (10) through a connector (60). The connector (60) is disposed on the bracket (10), and the other end of the rubber roller (50) is rotatably connected to the connector (60).

9. The thermal printer cartridge according to claim 8, characterized in that, The connector (60) includes a rotating part (61) for rotatably connecting to one end of the rubber roller (50), a limiting part (62) disposed at one end of the rotating part (61), and a first buckle (63) disposed on the limiting part (62). The rotating part (61) is embedded in the bracket (10), and the first buckle (63) is fastened to the bracket (10).

10. The thermal printer cartridge according to claim 6, characterized in that, The thermal printer core also includes an optocoupler assembly (70) disposed on a bracket (10), the bracket (10) being provided with a mounting groove (14) for mounting the optocoupler assembly (70), and a second buckle (15) for restricting the optocoupler assembly (70) within the mounting groove (14).

Images