CN216942348U

CN216942348U - Thermal printer

Info

Publication number: CN216942348U
Application number: CN202122581658.4U
Authority: CN
Inventors: 郭晋鹏; 孙瑞娟; 蔡木城
Original assignee: Zhuhai Seal Interest Technology Co Ltd
Current assignee: Zhuhai Seal Interest Technology Co Ltd
Priority date: 2021-10-26
Filing date: 2021-10-26
Publication date: 2022-07-12
Anticipated expiration: 2031-10-26

Abstract

The utility model belongs to the field of printers, and discloses a thermal printer which comprises a first inner cover, a second inner cover, a thermal sensitive sheet assembly and a positioning assembly. The first inner cover comprises a rubber roller and a rubber roller guide sleeve connected with the rubber roller. The positioning assembly comprises positioning pieces arranged at two ends of the second inner cover, the first inner cover can press the heat-sensitive sheet assembly on the second inner cover, and the positioning pieces can be connected with the rubber roll guide sleeve in response to pressing. The utility model has good printing effect in the actual use process.

Description

Thermal printer

Technical Field

The utility model relates to the field of printers, in particular to a thermal printer.

Background

In the thermal printer in the market, the pressing of the thermal sensitive sheet is generally accomplished by a spring or a spring plate disposed under the thermal sensitive sheet. The mode can directly apply pressure on the surface of the thermosensitive sheet, so that the thermosensitive sheet, the thermosensitive paper and the rubber roller are in a joint state. However, the pressure generated by the spring or the elastic sheet is unstable, and thus the printing effect of the printer cannot be ensured.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a thermal printer, which can automatically adjust when a thermal sensitive sheet is attached to a rubber roller by arranging positioning pieces on two sides of a thermal sensitive sheet assembly, so that the uniform stress is ensured, the thermal sensitive paper is uniformly heated, and the printer has a good printing effect.

According to the present invention, there is provided a thermal printer comprising: the first inner cover comprises a rubber roller and a rubber roller guide sleeve connected with the rubber roller, a second inner cover arranged opposite to the first inner cover is located on a heat sensitive sheet assembly between the first inner cover and the second inner cover, and a positioning assembly comprises positioning pieces arranged at two ends of the second inner cover, wherein the first inner cover is constructed to be capable of pressing the heat sensitive sheet assembly on the second inner cover, and the positioning pieces are constructed to be capable of responding to pressing and forming connection with the rubber roller guide sleeve.

In one embodiment, the heat-sensitive sheet assembly comprises a heat sink and a heat-sensitive sheet arranged on the heat sink, wherein two ends of the heat sink are fixedly connected with the positioning piece, and the heat-sensitive sheet is fixedly connected with the heat sink.

In one embodiment, the heat sensitive sheet and the heat radiating sheet are connected through heat radiating silica gel.

In one embodiment, the positioning element comprises a vertically extending sheet-shaped main body, a first positioning groove is formed in the top end of the main body, and the rubber roller guide sleeve is configured to be clamped into the first positioning groove during pressing, so that the positions of the heat-sensitive sheet and the rubber roller are adjusted.

In one embodiment, the first positioning groove is formed in a circular arc shape.

In one embodiment, the positioning member further includes a first positioning column disposed below the first positioning groove and extending horizontally outward from the main body, a second positioning groove is disposed inside the second inner cover, and the first positioning column is capable of fitting with the second positioning groove and used for limiting the position of the positioning assembly in the longitudinal direction.

In an embodiment, the positioning element further includes a third positioning slot disposed at the front end of the main body, a second positioning column is disposed inside the second inner cover, and the second positioning column can be adapted to the third positioning slot to limit the transverse position of the positioning assembly.

In one embodiment, the spacer further includes a support plate disposed below the first positioning groove and horizontally extending inward from the main body, the support plate being configured in a groove shape, and the heat dissipation fins are received in the support plate and fixedly coupled to each other by screws.

In one embodiment, the second inner cover includes a compression spring disposed therein for supporting the heat sensitive blade assembly.

In one embodiment, the first inner cover comprises rubber roller frames arranged at two ends, and two ends of the rubber roller guide sleeve respectively penetrate out of two ends of the rubber roller frames, so that the rubber roller is fixed in the first inner cover.

Drawings

The utility model will be described in detail below with reference to the attached drawing figures, in which:

FIG. 1 schematically shows a schematic of a thermal printer according to the present invention;

fig. 2 schematically shows a partial cross-sectional view of a thermal printer according to the present invention, showing in particular the connection relationship of the positioning member with the first and second inner lids;

fig. 3 schematically shows a structural view of a spacer for a thermal printer according to the present invention.

In the drawings, like parts are given like reference numerals. The figures are not drawn to scale.

Detailed Description

The utility model will be further explained with reference to the drawings. For convenience of explanation, the directional term "vertical" or the like in this specification refers to the height direction of the thermal printer, the term "horizontal", "longitudinal" or the like refers to the length direction of the thermal printer, and the term "lateral" or the like refers to the width direction of the thermal printer.

Fig. 1 schematically shows a structural view of a thermal printer 100 according to the present invention. As shown in fig. 1, the thermal printer 100 according to the present invention includes a first inner lid 10, a second inner lid 20, a positioning assembly 30, and a heat-sensitive sheet assembly 40. Wherein the first inner lid 10 is disposed opposite to the second inner lid 20. Preferably, the first inner lid 10 is positioned above the second inner lid 20. One side of the first inner cap 10 is hinged with one side of the second inner cap 20 such that the first inner cap 10 can be pressed on the second inner cap 20 after being rotated. The positioning assembly 30 is installed inside the second inner lid 20.

As shown in fig. 1, the first inner cover 10 includes a rubber roller 11, a rubber roller guide sleeve 12, and a rubber roller holder 13. The rubber roller frame 13 is installed at two ends of the first inner cover 10 and used for fixing the rubber roller guide sleeve 12 and the rubber roller 11. The rubber roller 11 is in a rod-shaped structure, and two ends of the rubber roller are connected with the rubber roller guide sleeve 12. Preferably, the rubber roller 11 is fixedly connected with the rubber roller guide sleeve 12. Two ends of the rubber roller guide sleeve 12 respectively penetrate out of two ends of the rubber roller frame 13, so that the rubber roller 11 is fixed in the first inner cover 10.

The heat sensitive sheet assembly 40 is positioned between the first and second

inner covers

10 and 20, is fixedly mounted with the positioning assembly 30, and is mounted inside the second inner cover 20 through the positioning assembly 30. Further, the positioning assembly 30 can be engaged with the first inner lid 10. That is, when the first inner cap 10 is pressed onto the second inner cap 20, the positioning assembly 30 and the first inner cap 10 are engaged, so that the heat sensitive assembly 40 mounted on the positioning assembly 30 and the rubber roller 11 in the first inner cap 10 form a tight and uniform fit.

According to the present invention, as shown in fig. 1, the heat-sensitive sheet assembly 40 includes a heat sink 41 and a heat-sensitive sheet 42. Wherein, both ends of the heat sink 41 are fixedly connected with the positioning component 30. The heat sensitive sheet 42 is disposed above the heat sink 41. The heat sensitive sheet 42 is fixedly connected to the heat sink 41. Preferably, the heat sensitive sheet 42 and the heat sink 41 are fixedly connected by the adhesive effect of the heat dissipating silicone.

According to the present invention, the positioning assembly 30 includes two positioning members 31 provided at both ends of the second inner lid 20, respectively. The top end of the positioning member 31 can be engaged with the first inner lid 10, so that the heat sensitive sheet 42 is attached to the rubber roller 11 in the first inner lid 10, thereby maintaining the stability of the printing effect of the printer. The bottom end of the positioning member 31 can be fixedly coupled with the second inner lid 20, thereby coupling the first inner lid 10 with the second inner lid 20 during the press-fitting process. In addition, the positioning member 31 is fixedly connected with the heat-sensitive sheet assembly 40, so that the position of the heat-sensitive sheet 42 is limited, the heat-sensitive sheet 42 and the rubber roller 11 can obtain a better attaching effect, and the heat-sensitive paper between the heat-sensitive sheet 42 and the rubber roller 11 is stressed more uniformly. Thus, the printing effect of the printer can be obviously improved.

Fig. 2 schematically shows a partial cross-sectional view of the thermal printer 100 according to the present invention, particularly illustrating the connection relationship of the positioning member 31 with the first and second

inner lids

10 and 20. Fig. 3 schematically shows a structural view of the positioning member 31 of the thermal printer 100 according to the present invention. According to the present invention, as shown in fig. 3, the positioning member 31 includes a body 32, and the body 32 is configured in a sheet structure and extends in a vertical direction.

As shown in fig. 2 and 3, the main body 32 includes a first positioning groove 33. The first positioning groove 33 is provided at the top end of the main body 32. The first positioning groove 33 is formed in a circular arc shape so as to facilitate engagement with the rubber roller guide 12. Specifically, when the first cover plate 10 is pressed on the second inner cover 20, the rubber roller guide sleeve 12 can be clamped into the first positioning groove 33, so that the position stability of the thermal sensitive sheet 42 and the rubber roller 11 is ensured, and the relationship between the thermal sensitive paper and the thermal sensitive sheet 42 and the rubber roller 11 is tighter. Thus, the pressure distributed on the thermal paper is more uniform. The thermal paper is heated more uniformly, so that the thermal printer 100 can print well.

As shown in fig. 1, the body 32 also includes a first positioning post 34. The first positioning post 34 is disposed below the first positioning groove 33 and extends horizontally outward from the main body 32. A second positioning groove 21 is provided in the second inner lid 20 at a position corresponding to the first positioning post 34. The first positioning column 34 is matched with the second positioning groove 21, so that the position of the positioning assembly 30 (and the thermal sensitive sheet 42) in the longitudinal direction is limited, the stability of the thermal printer 100 in the printing process is ensured, and the thermal printer 100 has a good printing effect.

As shown in fig. 2 and 3, the main body 32 further includes a third positioning groove 35. The third positioning groove 35 is provided at the front end of the main body 32 and formed in an arc shape. A second positioning column 22 is disposed at a position corresponding to the third positioning groove 35 inside the second inner lid 20. When the first cover plate 10 is pressed on the second inner cover 20, the second positioning column 22 is matched with the third positioning groove 35, so that the position of the positioning assembly 30 in the transverse direction is limited, the stability of the thermal printer 100 in the printing process is ensured, and the thermal printer 100 has a good printing effect.

According to the utility model, a first positioning groove 33, a first positioning column 34 and a third positioning groove 35 are integrated in the positioning element 31, which can simultaneously engage with the rubber roller guide sleeve 12, the second positioning groove 21 and the third positioning groove 35, respectively, in response to the pressing action of the first cover plate 10 onto the second inner cover 20. That is, the positioning member 31 is simultaneously brought into engagement with the first and second

inner lids

10 and 20 by one press-fitting action, defining degrees of freedom in various directions. Since the positioning member 31 is fixedly connected to the heat sensitive sheet 42, the position of the heat sensitive sheet 42 is also defined. The positioning process is simple to operate, time is saved, and working efficiency is improved.

As shown in fig. 3, the body 32 also includes a support plate 36. The support plate 36 is disposed below the first positioning groove 33, and extends horizontally inward (i.e., toward the longitudinal center of the thermal printer 100) from the main body 32. The support plate 36 is configured in a groove shape so that both ends of the heat sink 41 can be securely received on the support plate 36. Threaded holes are provided in both the support plate 36 and the heat sink 41. Therefore, the heat sink 41 is fixedly connected with the support plate 36 by screws, so that the heat sink 41 is fixed on the positioning member 31 and is further effectively installed in the second cover plate 20, thereby ensuring the stability of the thermal printer 100 during the printing process, and further ensuring the good printing effect of the thermal printer 100.

In one embodiment of the present invention, the second inner lid 20 includes a compression spring 50. The compression spring 50 is arranged below the heat radiating fin 41 and used for applying pressure to the heat sensitive sheet assembly 40 to ensure that the heat sensitive sheet assembly 40 is tightly attached to the rubber roller 11.

According to the utility model, through the connection of the positioning piece 31 and the rubber roll guide sleeve 12, the thermal sensitive sheet assembly 40 fixedly connected with the positioning piece 31 can be effectively attached to the rubber roll 11 through a simple pressing operation, so that the thermal sensitive paper is uniformly stressed, and the thermal printer 100 can have a good printing effect in the printing process.

The above is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto. Those skilled in the art can easily make changes or variations within the scope of the present disclosure, and such changes or variations are intended to be covered by the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A thermal printer comprising:

a first inner cover (10) which comprises a rubber roller (11) and a rubber roller guide sleeve (12) connected with the rubber roller (11),

a second inner lid (20) arranged opposite to the first inner lid (10),

a heat sensitive sheet assembly (40) between the first and second inner covers (10, 20), an

A positioning assembly (30) including positioning members (31) provided at both ends of the second inner lid (20),

wherein the first inner cover (10) is configured to enable press-fitting of the heat sensitive sheet assembly (40) on the second inner cover (20),

the positioning element (31) is configured to be brought into engagement with the rubber roller guide sleeve (12) in response to a press fit.

2. The thermal printer according to claim 1, wherein the thermal sheet assembly (40) comprises a heat sink (41) and a thermal sheet (42) disposed on the heat sink (41), wherein both ends of the heat sink (41) are fixedly connected to the positioning member (31), and the thermal sheet (42) is fixedly connected to the heat sink (41).

3. The thermal printer according to claim 2, wherein the thermal sheet (42) and the heat sink (41) are connected by a heat-dissipating silicone.

4. The thermal printer according to claim 3, wherein the positioning member (31) comprises a vertically extending sheet-like body (32), a first positioning groove (33) is provided at a top end of the body (32), and the rubber roller guide sleeve (12) is configured to be capable of being snapped into the first positioning groove (33) during pressing, so as to adjust the positions of the thermal sheet (42) and the rubber roller (11).

5. The thermal printer according to claim 4, wherein the first positioning groove (33) is formed in a circular arc shape.

6. The thermal printer according to claim 5, wherein the positioning member (31) further comprises a first positioning post (34) disposed below the first positioning groove (33) and extending horizontally outward from the main body (32), and the second positioning groove (21) is disposed inside the second inner lid (20), and the first positioning post (34) is adapted to the second positioning groove (21) for limiting the position of the positioning member (30) in the longitudinal direction.

7. The thermal printer according to claim 6, wherein the positioning member (31) further comprises a third positioning groove (35) disposed at a front end of the main body (32), a second positioning column (22) is disposed inside the second inner cover (20), and the second positioning column (22) is capable of fitting with the third positioning groove (35) for limiting a position of the positioning assembly (30) in a transverse direction.

8. The thermal printer according to claim 7, wherein the spacer (31) further comprises a support plate (36) disposed below the first positioning groove (33) and extending horizontally inward from the main body (32), the support plate (36) being configured in a groove shape, the heat radiating fins (41) being received in the support plate (36) and fixedly connected to each other by screws.

9. Thermal printer according to one of claims 1 to 8, characterized in that said second internal cover (20) comprises a compression spring (50) arranged internally and intended to support said thermal blade assembly (40).

10. The thermal printer according to any one of claims 1 to 8, wherein the first inner cover (10) comprises a rubber roller frame (13) arranged at both ends, and both ends of the rubber roller guide sleeve (12) respectively penetrate through both ends of the rubber roller frame (13), so that the rubber roller (11) is fixed in the first inner cover (10).