Thermal printer with cover closing microswitch integrated arrangement

Abstract

The utility model provides a cover closing microswitch integrated arrangement thermal printer, which comprises a base, a cover body, a rubber roller, a machine core and a main control circuit board, the main control circuit board is arranged on the base, the main control circuit board is provided with an extension part, and the extension part is positioned at the end part of a mounting groove in the paper width direction and is positioned outside the mounting groove; the extension part is welded with a cover closing microswitch, the cover body is provided with a trigger part, the trigger part is adjacent to the cover closing microswitch along with the covering of the cover body, then the cover closing microswitch obtains the covering state of the cover body, and the trigger part is separated from the cover closing microswitch along with the opening of the cover body, and then the cover closing microswitch can also obtain the opening state of the cover body.

Description

Technical Field

[0001] The utility model relates to the field of thermal printers, in particular to a thermal printer with an integrated arrangement of a lid closing microswitch. Background Art

[0002] With the popularization and application of thermal printers, they are widely used in the warehousing and logistics industry. Thermal printers include thermal transfer printers using the carbon ribbon thermal transfer principle and thermal printers using thermal paper thermal imaging. After thermal printing and imaging, the printed paper is output outward for users to use.

[0003] When the printed paper is exhausted, the printer cover needs to be opened to replace the printed paper. After replacement, the cover needs to be closed, and then the rubber roller is opposite to the thermal film. Therefore, the printer needs to be provided with a corresponding detection structure for cover closing detection. The existing design generally sets a microswitch separated from the main board at the cover closing position of the cover, and then connects it to the main board through a data cable, that is, connects to the main board by means of jumper connection. However, such a wiring method not only has complex wiring, but also is not conducive to cost control and reduction. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a thermal printer with an integrated arrangement of a lid closing microswitch

[0005] To achieve the purpose of the utility model, the utility model provides a thermal printer with an integrated arrangement of a lid closing microswitch, which includes a base, a cover, a rubber roller, a movement and a main control circuit board. The base is provided with a paper bin, the cover is hinged to the base and covers above the paper bin, and the rubber roller is arranged on the cover; the movement includes a seat body and a thermal film. The seat body is provided with an installation groove extending along the paper width direction. The installation groove is provided with installation side walls at both ends in the paper width direction, and the installation side walls are provided with fitting grooves. The thermal film is arranged in the installation groove along the paper width direction; the main control circuit board is arranged on the base, the seat body is arranged on the main control circuit board and fixedly connected to the main control circuit board. The main control circuit board is provided with an extension part, and the extension part is located at the end of the installation groove in the paper width direction and outside the installation groove. A lid closing microswitch is welded on the extension part; the cover is provided with a triggering part at the end of the rubber roller along the paper width direction; when the cover is closed, the rubber roller is located in the installation groove and is opposite to the thermal film, the axial end of the rubber roller is located in the fitting groove, and the triggering part is adjacent to the lid closing microswitch; when the cover is opened, the rubber roller is located outside the installation groove, and the triggering part is separated from the lid closing microswitch.

[0006] A further solution is that the seat body is provided with a guiding groove at the end of the paper bin based on the paper width direction. The lid closing microswitch is located in the guiding groove. The guiding groove has an opening above, and the triggering part is inserted into the guiding groove from the opening.

[0007] A further solution is that the guiding groove is provided with a guiding inclined surface at the opening, and the guiding inclined surface is used to cooperate with the triggering part.

[0008] A further solution is that the triggering part is arranged in a column shape.

[0009] A further solution is that support columns are arranged on the main control circuit board. The support columns are connected between the seat body and the main control circuit board. There is a gap between the main control circuit board and the bottom surface of the seat body, and the support columns are close to the extension part.

[0010] The beneficial effect of the present utility model is that by arranging the extension part on the main control circuit board, the lid-closing micro switch is welded on the extension part. Then the lid-closing micro switch is located outside the installation groove and at the end in the paper width direction. As the lid body is closed, the triggering part is adjacent to the lid-closing micro switch, and then the lid-closing micro switch can know the closing state of the lid body. As the lid body is opened, the triggering part is separated from the lid-closing micro switch, and then the lid-closing micro switch can also know the opening state of the lid body. Moreover, through the guiding groove, the guiding inclined surface and the triggering part arranged in a column shape, the triggering process of the triggering part can be optimized to make it smoother. In addition, the support columns can be close to the extension part, thereby improving the support degree of the extension part for the lid-closing micro switch, so as to ensure the stability of the triggering operation. Description of the Drawings

[0011] Figure 1 is a structural diagram of an embodiment of the thermal printer of the present utility model.

[0012] Figure 2 is a structural diagram of an embodiment of the thermal printer of the present utility model when the lid body is opened.

[0013] Figure 3 is another structural diagram of an embodiment of the thermal printer of the present utility model when the lid body is opened.

[0014] Figure 4 is a partial structural diagram of an embodiment of the thermal printer of the present utility model.

[0015] Figure 5 is a cross-sectional view of an embodiment of the thermal printer of the present utility model at the lid-closing micro switch.

[0016] The present utility model will be further described below in conjunction with the drawings and embodiments. Detailed Embodiments

[0017] Referring to Figures 1 to 5 , the thermal printer includes a base, a lid body 11, a rubber roller 111, a movement and a main control circuit board 21. The base includes an upper shell 12 and a lower shell 13. The upper shell 12 is located above the lower shell 13 and is connected to the lower shell 13. The upper shell 12 is provided with a paper bin 121 facing upwards, and the upper shell 12 and the lower shell 13 enclose a device accommodation cavity.

[0018] The cover body 11 is hinged to the base and covers above the paper bin 121. The rubber roller 111 is rotatably arranged on the cover body 11. The rubber roller 111 extends along the paper width direction Y. Axial end parts 112 are respectively arranged at both axial ends of the rubber roller 111. A driving gear is arranged on one of the axial end parts 112. The cover body 11 is provided with a triggering part 113 at the end of the rubber roller 111 along the paper width direction Y. The triggering part 113 is arranged in a column shape. The triggering part 113 and the driving gear are located at opposite ends in the paper width direction Y.

[0019] The movement mechanism includes a base body 3, a locking hook 33 and a thermal sheet 34. The base body 3 is provided with a mounting groove 31 extending along the paper width direction Y. Mounting side walls 32 are arranged at both ends of the mounting groove 31 in the paper width direction Y. The mounting side walls 32 are provided with mating grooves 321. The locking hook 33 is rotatably arranged on the base body 3. Hook parts 331 are arranged at the mating grooves 321 on each side of the locking hook 33. The thermal sheet 34 is arranged in the mounting groove 31 along the paper width direction Y.

[0020] The main control circuit board 21 is located in the device accommodation cavity and is connected to the upper shell 12 and the lower shell 13. The base body 3 is arranged on the main control circuit board 21 and is fixedly connected to the main control circuit board 21. Support columns 22 are arranged on the main control circuit board 21. The support columns 22 are connected between the base body 3 and the main control circuit board 21. There is a gap between the bottom surface of the main control circuit board 21 and the base body 3. The main control circuit board 21 is provided with an extension part 24. The extension part 24 is located at the end of the mounting groove 31 in the paper width direction Y and is outside the mounting groove 31. A lid-closing micro switch 2 is welded on the extension part 24. The support columns 22 are close to the extension part 24. Then, the fixed connection of the support columns 22 can provide a support force for the extension part 24.

[0021] The upper shell 12 is provided with a guiding groove 122 at the end of the paper bin 121 based on the paper width direction Y. The lid-closing micro switch 23 is located in the guiding groove 122. The guiding groove 122 has an opening at the upper part. The contour of the guiding groove 122 at the opening is provided with a guiding inclined surface 123. The guiding inclined surface 123 is used to cooperate with the triggering part 113.

[0022] When the cover body 11 is closed, the rubber roller 111 is located in the mounting groove 31 and is opposite to the thermal sheet 34. The axial end parts 112 of the rubber roller 111 are located in the mating grooves 321 and are locked by the hook parts 331. The triggering part 113 is inserted into the guiding groove 122 from the opening. The triggering part 113 is adjacent to the lid-closing micro switch 23. Then, the lid-closing micro switch 23 is triggered to obtain the closing state of the cover body.

[0023] When the cover body 11 is opened, the hook parts 331 are separated from the axial end parts 112. Therefore, the rubber roller 111 moves outside the mounting groove 31, and the triggering part 113 is separated from the lid-closing micro switch 23. Therefore, the reset of the lid-closing micro switch 23 can obtain the opening state of the cover body.

[0024] As can be seen from the above, by setting the extension part on the main control circuit board, the closing micro switch is welded on the extension part. Subsequently, the closing micro switch is located outside the installation groove and at the end in the paper width direction. As the cover body is closed, the triggering part is adjacent to the closing micro switch, and then the closing micro switch can obtain the closing state of the cover body. And as the cover body is opened, the triggering part is separated from the closing micro switch, and then the closing micro switch can also obtain the opening state of the cover body. Moreover, through the guiding groove, the guiding inclined plane and the triggering part arranged in a cylindrical shape, the triggering process of the triggering part can be optimized to make it smoother. In addition, the support column can be close to the extension part, thereby improving the support degree of the extension part for the closing micro switch, so as to ensure the stability of the triggering operation.

Claims

1. A thermal printer with an integrated arrangement of a lid closing microswitch, comprising a base, a lid, a rubber roller, a movement and a main control circuit board. The base is provided with a paper bin, the lid is hinged to the base and covers above the paper bin, and the rubber roller is arranged on the lid; It is characterized in that: The movement includes a seat body and a thermal sheet. The seat body is provided with an installation groove extending along the paper width direction. Installation side walls are provided at both ends of the installation groove in the paper width direction. The installation side walls are provided with fitting grooves, and the thermal sheet is arranged in the installation groove along the paper width direction; The main control circuit board is arranged on the base. The seat body is arranged on the main control circuit board and fixedly connected to the main control circuit board. The main control circuit board is provided with an extension part, which is located at the end of the installation groove in the paper width direction and outside the installation groove. A lid closing microswitch is welded on the extension part; The lid is provided with a trigger part at the end of the rubber roller along the paper width direction; When the lid is closed, the rubber roller is located in the installation groove and opposite to the thermal sheet. The axial end of the rubber roller is located in the fitting groove, and the trigger part is adjacent to the lid closing microswitch; When the lid is opened, the rubber roller is located outside the installation groove, and the trigger part is separated from the lid closing microswitch.

2. The thermal printer according to claim 1, characterized in that: The seat body is provided with a guiding groove at the end of the paper bin based on the paper width direction. The lid closing microswitch is located in the guiding groove. The guiding groove has an opening above, and the trigger part is inserted into the guiding groove from the opening.

3. The thermal printer according to claim 2, characterized in that: The contour of the guiding groove at the opening is provided with a guiding inclined surface for cooperating with the trigger part.

4. The thermal printer according to claim 2, characterized in that: The trigger part is arranged in a column shape.

5. The thermal printer according to any one of claims 1 to 4, characterized in that: Support columns are arranged on the main control circuit board. The support columns are connected between the seat body and the main control circuit board. There is a gap between the bottom surface of the main control circuit board and the seat body, and the support columns are close to the extension part.

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