Thermal printer with paper detection module mounted at bottom of cover body

Abstract

The utility model provides a thermal printer equipped with a paper detection module at the bottom of a cover body, which comprises a base, the cover body, a rubber roller, a thermal sensitive sheet, the paper detection module and a fast-assembly cover plate, the paper detection module comprises an upper sensing assembly and a lower sensing assembly, the paper detection module is installed at the bottom of the cover body, and the fast-assembly cover plate is assembled at the bottom of the cover plate in a manner of convenient buckle assembly and disassembly. And through the support of the thermosensitive bracket and the quick-assembly cover plate, the installation and the positioning of the thermosensitive bracket and the thermosensitive sheet are facilitated, so that the assembly efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of thermal printing equipment, in particular to a thermal printer with a paper detection module installed at the bottom of a cover body. Background Art

[0002] With the popularization of thermal printers, they are not only used in bank ATMs, supermarket cash registers and e-commerce delivery offices, but also in the rapidly growing e-commerce and express delivery industries, which have higher requirements for the stability, durability, and printing accuracy and speed of the printers.

[0003] In order to improve the accuracy of paper feeding, it is necessary to add a paper detection sensor at the paper feeding channel. The ease of assembly of the paper detection sensor is particularly important. Utility Model Content

[0004] The utility model aims to provide a thermal printer with a paper detection module installed at the bottom of a cover body.

[0005] In order to achieve the purpose of the utility model, the utility model provides a thermal printer with a paper detection module installed at the bottom of a cover body, comprising a base, a cover body, a rubber roller and a thermal sheet, wherein the cover body is located above the base, the cover body is hinged to the base, the rubber roller is arranged on the upper surface of the base along the paper width direction, the thermal sheet is arranged on the lower surface of the cover body along the paper width direction, a paper outlet is formed at the edge position of the base and the cover body, a paper detection position is formed at the middle position of the base and the cover body, the thermal sheet and the rubber roller are opposite to each other near the paper outlet and form a paper feeding channel, and the paper feeding channel is connected between the paper outlet and the paper detection position; the thermal printer also comprises a paper detection module and a quick-release cover plate, the paper detection module comprises an upper sensing component and a lower sensing component, the upper sensing component comprises an upper circuit board and an upper infrared sensor welded on the upper circuit board; the lower sensing component comprises A lower circuit board and a lower infrared sensor welded on the lower circuit board, a lower light-transmitting hole is arranged on the upper surface of the base at the paper-detecting position, the lower circuit board is fixedly arranged on the bottom side of the upper surface of the base, and the lower infrared sensor is located at the lower light-transmitting hole; a quick-loading slot is arranged on the lower surface of the cover body at the paper-detecting position, the quick-loading slot extends in the paper width direction, and the quick-loading slot is respectively provided with a first clamping portion at both ends of the paper width direction, the quick-loading cover plate extends in the paper width direction and is respectively provided with a second clamping portion at both ends of the paper width direction, the upper circuit board is fixedly arranged on the upper surface of the quick-loading cover plate, the quick-loading cover plate is provided with an upper light-transmitting hole at a position opposite to the lower light-transmitting hole, the upper infrared sensor is located at the upper light-transmitting hole, the quick-loading cover plate is installed at the quick-loading slot, the first clamping portion and the second clamping portion are detachably engaged, and the upper infrared sensor is opposite to the lower infrared sensor.

[0006] A further solution is that the first clamping portion includes a first groove portion, a first clamping plate and two first baffles, the two first baffles are located on both sides of the first groove portion based on the paper length direction, and the first clamping plate is located on the outside of the first groove portion based on the paper width direction; the quick-release cover plate is respectively provided with elastic arms at both ends in the paper width direction, the second clamping portion is provided on the free end of the elastic arm, the second clamping portion includes a second groove portion and two clamping blocks, the two clamping blocks are located on both sides of the second groove portion in the vertical direction; an elastic arm is located in the first groove portion on one side, the elastic arm is gapped with the two first baffles, the first clamping plate is located in the second groove portion, and the two clamping blocks are gapped with the first clamping plate.

[0007] A further solution is that the quick-release cover is provided with a second card plate on the side wall in the paper length direction, the cover body is provided with a first card slot on the side wall of the quick-release slot based on the paper length direction, and the second card plate is gap-matched with the first card slot.

[0008] A further solution is that the elastic arms are arranged in a U shape.

[0009] A further solution is that the cover body is provided with a thermal mounting slot, which is located on the side of the quick-loading slot close to the paper outlet based on the paper length direction. The thermal printer also includes a thermal bracket, the thermal sheet is installed on the lower surface of the thermal bracket, and the thermal bracket is installed in the thermal mounting slot.

[0010] A further solution is that the thermal installation slot is provided with support slots on both sides in the paper width direction, and the thermal bracket is provided with a first fulcrum and a second fulcrum on each side in the paper width direction, the first fulcrum is supported upward by the support slot, and the second fulcrum is supported upward by the quick-release cover.

[0011] The beneficial effect of the utility model is that the paper detection module is installed on the bottom of the cover body, and the quick-release cover is assembled to the bottom of the cover by means of convenient snap-on assembly and disassembly, which is also convenient for the assembly positioning and wiring routing of the sensor, and through the support of the thermistor bracket and the quick-release cover plate, it is convenient to install and position the thermistor bracket and the thermistor sheet, thereby improving the assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural diagram of an embodiment of a thermal printer of the utility model.

[0013] Figure 2 It is a structural diagram of an embodiment of the thermal printer of the utility model when the cover is opened.

[0014] Figure 3 It is a structural diagram of the cover body part of the thermal printer embodiment of the utility model.

[0015] Figure 4 It is an exploded view of the cover body part of the thermal printer embodiment of the utility model.

[0016] Figure 5 It is a cross-sectional view of an embodiment of a thermal printer of the utility model.

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments. DETAILED DESCRIPTION

[0018] Reference Figures 1 to 5 The thermal printer includes a base 1, a cover 2, a rubber roller 121 and a thermal sheet 24. The cover 2 is located above the base 1, and the cover 2 is hinged to the base 1. The base 1 includes a lower inner seat 12 and an outer bottom shell 11. The rubber roller 121 is rotatably arranged on the upper surface of the lower inner seat 12 along the paper width direction Y. The rubber roller 121 is driven to rotate by a driving motor on the lower inner seat 12. The outer bottom shell 11 is sleeved outside the lower inner seat 12. The cover 2 includes an upper inner seat 22 and an outer cover shell 21. The thermal sheet 24 is arranged on the lower surface of the upper inner seat 22 along the paper width direction Y. A paper outlet is formed at the edge of the base 1 and the cover 2. 10, a paper checking position 133 is formed at the middle position of the base 1 and the cover body 2, the thermal sheet 24 and the rubber roller 121 are close to the paper outlet 10 and face each other to form a paper feeding channel, the paper feeding channel is connected between the paper outlet 10 and the paper checking position 133, the extension direction of the paper feeding channel is perpendicular to the paper width direction Y, the paper length direction X is perpendicular to the paper width direction Y, a paper inlet 131 is also formed between the base 1 and the cover body 2, the paper feeding channel is connected between the paper outlet 10 and the paper inlet 131, the paper outlet 10 and the paper inlet 131 are located at opposite ends of the paper feeding channel, and two paper clamping blocks 132 are arranged at the paper inlet 131.

[0019] The thermal printer also includes a paper checking module and a quick-release cover 25. The paper checking module includes an upper sensing component and a lower sensing component. The upper sensing component includes an upper circuit board 262 and an upper infrared sensor 261 welded on the upper circuit board 262. The lower sensing component includes a lower circuit board 123 and a lower infrared sensor 122 welded on the lower circuit board 123. A lower light-transmitting hole 134 is provided on the upper surface of the base 1 at the paper checking position 133. The lower circuit board 123 is fixedly arranged on the bottom side of the upper surface of the base 1, and the lower infrared sensor 122 is located at the lower light-transmitting hole 134.

[0020] A quick-loading slot 221 is provided on the lower surface of the cover body 2 at the paper checking position 133, and the quick-loading slot 221 extends along the paper width direction Y. The quick-loading slot 221 is provided with a first clamping portion at both ends of the paper width direction Y, and the first clamping portion includes a first slot portion 222, a first clamping plate 224 and two first baffle walls 223. The two first baffle walls 223 are located on both sides of the first slot portion 222 based on the paper length direction X, and the first clamping plate 224 is located on the outer side of the first slot portion 222 based on the paper width direction Y.

[0021] The quick-release cover 25 extends along the paper width direction Y and is respectively provided with a second clamping portion at both ends of the paper width direction Y. The quick-release cover 25 is respectively provided with elastic arms 251 at both ends of the paper width direction Y. The elastic arms 251 are arranged in a U shape. The second clamping portion is arranged on the free end of the elastic arm 251. The second clamping portion includes a second groove portion 252 and two clamping blocks 253. The two clamping blocks 253 are located on both sides of the second groove portion 252 in the vertical direction.

[0022] The upper circuit board 262 is fixedly arranged on the upper surface of the quick-release cover plate 25 . The quick-release cover plate 25 is provided with an upper light-transmitting hole 255 at a position opposite to the lower light-transmitting hole 134 . The upper infrared sensor 261 is located at the upper light-transmitting hole 255 .

[0023] The quick-release cover 25 is installed at the quick-release slot 221, the first clamping portion and the second clamping portion are detachably engaged, an elastic arm 251 is located in the first slot 222 on one side, the elastic arm 251 is gapped with the two first baffle walls 223, the first clamping plate 224 is located in the second slot 252, and the two clamping blocks 253 are gapped with the first clamping plate 224. When the cover body 2 is in the closed state, the upper infrared sensor 261 is opposite to the lower infrared sensor 122. When the printing paper is input into the paper feeding channel, the upper infrared sensor 261 can emit an infrared signal, and the lower infrared sensor 122 receives the infrared signal, thereby being able to detect the edge position of the printing paper.

[0024] In addition, the quick-release cover 25 is provided with a second clamping plate 254 on the side wall in the paper length direction X, and the cover body 2 is provided with a first clamping slot on the side wall of the quick-release slot 221 based on the paper length direction X, and the second clamping plate 254 is gap-matched with the first clamping slot.

[0025] The cover body 2 is provided with a thermal installation slot 225, and the thermal installation slot 225 is located on the side of the quick-release slot 221 close to the paper outlet 10 based on the paper length direction X. The thermal printer also includes a thermal bracket 23, and the thermal sheet 24 is installed on the lower surface of the thermal bracket 23, and the thermal bracket 23 is installed in the thermal installation slot 225. The thermal installation slot 225 is provided with support slots 226 on both sides of the paper width direction Y, and the thermal bracket 23 is provided with a first fulcrum 231 and a second fulcrum 232 on each side of the paper width direction Y, the first fulcrum 231 is supported at the top by the support slot 226, and the second fulcrum 232 is supported at the top by the quick-release cover plate 25.

[0026] As can be seen from the above, in this case, the paper detection module is installed on the bottom of the cover body, and the quick-release cover is assembled to the bottom of the cover by means of convenient snap-on assembly and disassembly, which also facilitates the assembly positioning and wiring routing of the sensor, as well as the support of the thermistor bracket and the quick-release cover, which facilitates the installation positioning of the thermistor bracket and the thermistor sheet, thereby improving assembly efficiency.

Claims

1. A thermal printer with a paper detection module installed at the bottom of a cover, comprising a base, a cover, a rubber roller and a thermal sheet, wherein the cover is located above the base, the cover is hinged to the base, the rubber roller is arranged on the upper surface of the base along the paper width direction, the thermal sheet is arranged on the lower surface of the cover along the paper width direction, a paper outlet is formed at the edge positions of the base and the cover, a paper detection position is formed at the middle positions of the base and the cover, the thermal sheet and the rubber roller are opposite to each other close to the paper outlet and form a paper feeding channel, and the paper feeding channel is connected between the paper outlet and the paper detection position; Features: The thermal printer further comprises a paper detection module and a quick-release cover plate, wherein the paper detection module comprises an upper sensing component and a lower sensing component, wherein the upper sensing component comprises an upper circuit board and an upper infrared sensor welded on the upper circuit board; The lower sensing assembly includes a lower circuit board and a lower infrared sensor welded on the lower circuit board, the upper surface of the base is provided with a lower light-transmitting hole at the paper-detecting position, the lower circuit board is fixedly arranged on the bottom side of the upper surface of the base, and the lower infrared sensor is located at the lower light-transmitting hole; The lower surface of the cover body is provided with a quick-loading slot at the paper checking position, the quick-loading slot extends along the paper width direction, and the quick-loading slot is respectively provided with a first clamping portion at both ends of the paper width direction, the quick-loading cover plate extends along the paper width direction and is respectively provided with a second clamping portion at both ends of the paper width direction, the upper circuit board is fixedly provided on the upper surface of the quick-loading cover plate, the quick-loading cover plate is provided with an upper light-transmitting hole at a position opposite to the lower light-transmitting hole, the upper infrared sensor is located at the upper light-transmitting hole, the quick-loading cover plate is installed at the quick-loading slot, the first clamping portion and the second clamping portion are detachably engaged, and the upper infrared sensor is opposite to the lower infrared sensor.

2. The thermal printer according to claim 1, characterized in that: The first clamping portion includes a first slot, a first clamping plate and two first baffles, wherein the two first baffles are located on both sides of the first slot in a paper length direction, and the first clamping plate is located on the outer side of the first slot in a paper width direction; The quick-release cover is provided with elastic arms at both ends of the paper width direction, the second clamping portion is provided on the free ends of the elastic arms, the second clamping portion includes a second groove portion and two clamping blocks, and the two clamping blocks are located on both sides of the second groove portion in the vertical direction; One of the elastic arms is located in the first groove on one side, and the elastic arm is gap-matched with two of the first retaining walls; the first clamping plate is located in the second groove, and the two clamping blocks are gap-matched with the first clamping plate.

3. The thermal printer according to claim 2, characterized in that: The quick-release cover is provided with a second card plate on the side wall in the paper length direction, the cover body is provided with a first card slot on the side wall of the quick-release slot based on the paper length direction, and the second card plate is gap-matched with the first card slot.

4. The thermal printer according to claim 2, characterized in that: The elastic arms are arranged in a U shape.

5. The thermal printer according to claim 2, characterized in that: The cover body is provided with a thermal installation slot, and the thermal installation slot is located on a side of the quick-loading slot close to the paper outlet based on the paper length direction. The thermal printer also includes a thermal bracket, the thermal sheet is installed on the lower surface of the thermal bracket, and the thermal bracket is installed in the thermal installation slot.

6. The thermal printer according to claim 5, characterized in that: The thermal installation slot is provided with support slots on both sides of the paper width direction, and the thermal bracket is provided with a first fulcrum and a second fulcrum on each side of the paper width direction, the first fulcrum is supported upward by the support slot, and the second fulcrum is supported upward by the quick-release cover.

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