Movement structure and printer

Abstract

According to the technical scheme, the core structure comprises a support and a rubber roller, the support is provided with a clamping groove, the rubber roller is detachably connected in the clamping groove, one side of the clamping groove is provided with a U-shaped kerf to form a cantilever, and the other side of the clamping groove is provided with a through hole to form an elastic arm. The cantilever and the elastic arm abut against the two sides of the rubber roller correspondingly so that the rubber roller can be fixed in the clamping groove. According to the structure, when the rubber roller is fixed in the clamping groove, the rubber roller is effectively prevented from moving in the rotating process, smooth rotation of the rubber roller is guaranteed, the overall performance and printing quality of the printer are improved, the structure is simple, and operation is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of printers, and more particularly to a core structure and a printer. Background Art

[0002] In the field of printer technology, the printer's core component, the structure and performance of the printer's movement, is directly related to the printer's overall operating efficiency and print quality. Traditional printer movement structures, particularly those for thermal printers, typically utilize a groove in the movement bracket. A rubber roller is mounted in the groove via a sleeve or bearing, allowing the roller to rotate and drive the thermal paper.

[0003] To prevent the rubber roller from moving within the groove, various improvements have been proposed for traditional printer mechanisms. These include adding a protruding compression spring to the mechanism bracket to abut and restrain the rubber roller; or installing a retractable cover that fits within the groove and snaps shut after the rubber roller is installed to retain the roller in place. However, these solutions are not only complex, increasing the difficulty of installation and maintenance, but contact between the rubber roller and the retaining structure can also affect the roller's rotational performance, further limiting the printer's overall performance. Utility Model Content

[0004] In order to solve the above problems, the present invention provides the following technical solutions:

[0005] A movement structure includes a bracket and a rubber roller. The bracket is provided with a clamping groove, and the end of the rubber roller is provided with a shaft sleeve. The rubber roller is detachably connected to the clamping groove through the shaft sleeve. A U-shaped slit is provided on one side of the clamping groove to form a cantilever, and a through hole is provided on the other side of the clamping groove to form an elastic arm. The cantilever and the elastic arm respectively abut against the two sides of the rubber roller to fix it in the clamping groove.

[0006] The utility model is further configured as follows: a curved surface is provided on one side of the cantilever facing the clamping groove, and the curved surface is fitted with the shaft sleeve.

[0007] The present invention is further configured as follows: the tops of the cantilever and the elastic arm are both provided with guide surfaces, and the guide surfaces are inclined from top to bottom toward the inside of the clamping groove.

[0008] The utility model is further configured as follows: a head plate is movably provided on the bracket, a spring is provided between the head plate and the bracket, and the spring pushes the head plate to contact the rubber roller.

[0009] The utility model is further configured as follows: a slide is provided on the cantilever, the slide is provided along the length direction of the spring, and a slider protrudes from the head plate toward the slide and is slidably connected to the slide.

[0010] The utility model is further configured as follows: both ends of the bracket are provided with a clamping groove, both ends of the rubber roller are provided with a shaft sleeve, and the two ends of the rubber roller are detachably connected to the clamping groove through the shaft sleeve.

[0011] The utility model is further configured as follows: a motor is installed on the bracket, a driving gear is connected to the output shaft of the motor, and a driven gear meshing with the driving gear is provided at one end of the rubber roller.

[0012] In addition, the present invention also provides a printer, comprising the above-mentioned core structure.

[0013] Compared with the prior art, the present invention has at least the following advantages:

[0014] 1. By creating slits and through-holes, deformable cantilever arms and elastic arms are formed on either side of the snap-in slot. When the rubber roller is pressed into the slot, the pressure on both sides causes deformation. Once the rubber roller is fully inserted into the slot, the cantilever arms and elastic arms return to their original shape, clamping the roller's sleeve securely, allowing the roller to rotate relative to the sleeve. This structure not only effectively prevents the rubber roller from moving during rotation, ensuring smooth rotation and improving the printer's overall performance and print quality, but also offers a simple structure and easy operation.

[0015] 2. By setting a spring to press the head plate, the head plate is pressed against the rubber roller, and the paper moves between the head plate and the rubber roller, so that the paper is always close to the rubber roller; and the spring provides pressure to the rubber roller, which can further improve the stability of the rubber roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is an overall schematic diagram of the first embodiment;

[0017] Figure 2 is a side view of the first embodiment;

[0018] Figure 3 It is a top view of the first embodiment.

[0019] Description of reference numerals:

[0020] 1. Bracket; 2. Rubber roller; 3. Snap-fit ​​groove; 4. Slit; 5. Cantilever; 6. Through hole; 7. Elastic arm; 8. Arc surface; 9. Guide surface; 10. Head plate; 11. Spring; 12. Slideway; 13. Motor; 14. Driven gear; 15. Bushing. DETAILED DESCRIPTION

[0021] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0022] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0023] First embodiment:

[0024] A movement structure, such as Figure 1 and Figure 2 As shown, it includes a bracket 1 and a rubber roller 2. The bracket 1 is provided with a clamping groove 3. The end of the rubber roller 2 is sleeved with a shaft sleeve 15. The rubber roller 2 is detachably connected to the clamping groove 3 through the shaft sleeve 15. A U-shaped slit 4 is provided on one side of the clamping groove 3 to form a cantilever 5. A through hole 6 is provided on the other side of the clamping groove 3 to form an elastic arm 7. The cantilever 5 and the elastic arm 7 respectively abut against both sides of the shaft sleeve 15 to fix it in the clamping groove 3. The rubber roller 2 is rotatably connected to the shaft sleeve 15. When the shaft sleeve 15 is fixed in the clamping groove 3, the rubber roller 2 can rotate relative to it.

[0025] When the rubber roller 2 is pressed into the engaging groove 3, the two sides of the engaging groove 3 are deformed by the pressure. When the rubber roller 2 is completely inserted into the engaging groove 3, the cantilever 5 and the elastic arm 7 return to their original state, clamping the sleeve 15. Similarly, when the rubber roller 2 is pulled outward by external force, the two sides of the engaging groove 3 are deformed, and the sleeve 15 can be removed, thus achieving detachability.

[0026] A slit 4 is provided on one side of the bottom of the snap-fit ​​groove 3 at an angle downward, and the slit 4 extends upward after an arc-shaped transition, thereby forming a U-shaped slit 4. The cantilever 5 formed by setting the slit 4 has good elastic performance, and only the deformation amplitude at the slit 4 is large, which is not easy to be damaged, which is beneficial to maintaining the stability of the bracket 1 as a whole.

[0027] The cantilever 5 is provided with an arcuate surface 8 on one side facing the clamping groove 3. The arcuate surface 8 fits with the shaft sleeve 15 on the rubber roller 2. The clamping of the arcuate surface 8 can play a limiting effect in the vertical direction, making it difficult for the rubber roller 2 to fall off.

[0028] A through hole 6 is provided on the other side of the snap-fitting slot 3, which passes through the side wall of the bracket 1. An elastic arm 7 is formed around the outer part of the through hole 6. The thickness of the side facing the snap-fitting slot 3 is less than the width of the through hole 6. By providing the through hole 6, space is provided for the side wall of the snap-fitting slot 3 to deform outward, thereby having good elastic performance.

[0029] A guide surface 9 is provided on the top of the cantilever 5 and the elastic arm 7. The guide surface 9 is arranged to be inclined from top to bottom into the clamping groove 3. When the rubber roller 2 is pressed into the clamping groove 3, the guiding effect of the guide surface 9 helps the sleeve 15 slide into the clamping groove 3.

[0030] like Figure 1 and Figure 3 As shown, in this embodiment, a head plate 10 is movably mounted on the bracket 1. A spring 11 is disposed between the head plate 10 and the bracket 1. The length of the spring 11 is perpendicular to the length of the rubber roller 2. The spring 11 pushes the head plate 10 against the rubber roller 2. The paper moves between the head plate 10 and the rubber roller 2, ensuring that the paper is always in close contact with the rubber roller 2. The spring 11 also provides pressure on the rubber roller 2, further improving the stability of the sleeve 15 within the engaging groove 3.

[0031] A slideway 12 is provided on the cantilever 5 near the top. The slideway 12 extends along the length of the spring 11. A slider protrudes from the head plate 10, facing into the slideway 12 and slidably connected to the slider. The head plate 10 is slidably connected to the inside of the cantilever 5 through the cooperation between the slideway 12 and the slider. The slideway 12 serves as a guide for the movement of the head plate 10, ensuring that the head plate 10 always moves toward the rubber roller 2. It also protects the spring 11 from vertical forces, preventing the spring 11 from bending and damage.

[0032] In this embodiment, both ends of the bracket 1 are provided with a clamping groove 3, and both ends of the rubber roller 2 are provided with a shaft sleeve 15. The two ends of the rubber roller 2 are detachably connected to the clamping groove 3 through the shaft sleeve 15, and the two ends of the head plate 10 are respectively protruded with sliders in the slideway 12 of the cantilever 5 on both sides.

[0033] A motor 13 is mounted at the bottom of the bracket 1. A driving gear is connected to the output shaft of the motor 13. A driven gear 14 is provided at one end of the rubber roller 2, meshing with the driving gear. When the motor 13 rotates the driving gear, the meshed driven gear 14 drives the rubber roller 2 to rotate, achieving the transmission and printing functions. The driving gear can be a single gear or a gear set.

[0034] Second embodiment:

[0035] A printer, not shown, includes the movement structure described in the first embodiment. A flip cover is rotatably provided on the printer, and a rubber roller 2 is fixed on the flip cover. When the flip cover is closed, the rubber roller 2 is pressed into the engaging groove 3.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the design concept of the present invention should be included in the scope of protection of the present invention.

Claims

1. A movement structure, characterized in that: The invention comprises a bracket (1) and a rubber roller (2), wherein the bracket (1) is provided with a clamping groove (3), and the end of the rubber roller (2) is provided with a shaft sleeve (15). The rubber roller (2) is detachably connected to the clamping groove (3) through the shaft sleeve (15). A cantilever (5) is formed by providing a U-shaped slit (4) on one side of the clamping groove (3), and an elastic arm (7) is formed by providing a through hole (6) therethrough on the other side of the clamping groove (3). The cantilever (5) and the elastic arm (7) respectively abut against both sides of the shaft sleeve (15) to fix it in the clamping groove (3).

2. A movement structure according to claim 1, characterized in that: The cantilever (5) is provided with an arcuate surface (8) on one side facing the clamping groove (3), and the arcuate surface (8) is in contact with the shaft sleeve (15).

3. The movement structure according to claim 2, characterized in that: The tops of the cantilever (5) and the elastic arm (7) are both provided with guide surfaces (9), and the guide surfaces (9) are inclined from top to bottom toward the inside of the clamping groove (3).

4. The movement structure according to claim 2, characterized in that: A head plate (10) is movably provided on the bracket (1), a spring (11) is provided between the head plate (10) and the bracket (1), and the spring (11) pushes the head plate (10) to abut against the rubber roller (2).

5. The movement structure according to claim 4, characterized in that: A slideway (12) is provided on the cantilever (5), and the slideway (12) is provided along the length direction of the spring (11). The head plate (10) has a slider protruding toward the slideway (12) and slidably connected to the slideway (12).

6. The movement structure according to claim 5, characterized in that: Both ends of the bracket (1) are provided with a clamping groove (3), and both ends of the rubber roller (2) are provided with a shaft sleeve (15). The two ends of the rubber roller (2) are detachably connected to the clamping groove (3) through the shaft sleeve (15).

7. The movement structure according to claim 1, characterized in that: A motor (13) is mounted on the bracket (1), a driving gear is connected to the output shaft of the motor (13), and a driven gear (14) meshing with the driving gear is provided at one end of the rubber roller (2).

8. A printer, characterized in that: The invention comprises the movement structure according to any one of claims 1 to 7.

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