Thermal printer capable of realizing close fitting wiring

Abstract

The utility model provides a thermal printer with close fitting wiring, which comprises a base, a cover body, a master control circuit board, a rubber roller, a thermosensitive sheet, a data line and a paper inspection sensor, two hinge arms are arranged on the inner end face of the cover body, the two hinge arms are respectively hinged to the base, each hinge arm is provided with a hinge part, an arc-shaped extension part and a fixing part, and the fixing parts are fixed on the base. An arc-shaped groove is formed in the arc-shaped extending part, an inlet and an outlet are formed in the two opposite sides of the fixing part of the arc-shaped groove respectively, the paper detection sensor is arranged on the cover body and detects the paper feeding channel, and the data line is connected between the paper detection sensor and the main control circuit board and sequentially passes through the base, the hinge part, the inlet, the arc-shaped groove and the outlet. And the part, outside the outlet, of the data line is attached to the inner end face of the cover body. The data line is attached to the positioning cambered surface and the inner end face of the cover body and is not influenced during rotation, and the connection stability of the data line is maintained by utilizing the positioning design of the plurality of slits, and the normal rotation of the cover body is not influenced.

Description

Technical Field

[0001] The utility model relates to the field of thermal printers, in particular to a thermal printer with tightly fitted wiring. Background Art

[0002] With the popularization of thermal printers, they are not only used in bank ATMs, supermarket cash registers, e-commerce delivery offices, catering shops, etc., but also in the e-commerce and express delivery industries, where printing is growing rapidly and there are higher requirements for the stability of use and ease of operation of the printers.

[0003] A thermal printer is generally provided with a base, a cover, a rubber roller and a thermal film. The printed paper is output to the paper outlet after the thermal film is imaged. During printing, the edge of the printed paper and its related position need to be detected. Therefore, generally printers are provided with a paper detection sensor. Since the paper detection sensor is generally arranged on the cover, in order to realize the transmission of the detection signal, it is necessary to configure a data line connected between the paper detection sensor and the main control circuit board. For this purpose, the data line needs to extend from the cover to the base. Since the cover needs to be frequently turned and opened, the data line at the cover is prone to move, thereby affecting the connection stability of the data line and the operation stability of the equipment. Utility Model Content

[0004] The utility model aims to provide a thermal printer which is closely fitted with wiring.

[0005] In order to achieve the purpose of the utility model, the utility model provides a thermal printer with tightly fitting wiring, including a base, a cover body, a main control circuit board, a rubber roller and a thermal sheet, the thermal sheet and the main control circuit board are arranged on the base, the rubber roller is rotatably arranged on the cover body, a paper bin is arranged on the base, the cover body covers the paper bin and is hinged to the base, a paper outlet is formed between the cover body and the base, the thermal sheet and the rubber roller are opposite to each other and form a paper feeding channel, and the paper feeding channel is connected between the paper outlet and the paper bin; the inner end surface of the cover body is provided with two hinged arms, the two hinged arms are respectively hinged to the base, one of the hinged arms is provided with a hinge portion, an arc-shaped extension An extension portion and a fixed portion, the fixed portion is fixedly connected to the inner end surface of the cover body, the arc-shaped extension portion is connected between the fixed portion and the hinge portion, an arc-shaped groove is arranged in the arc-shaped extension portion, and the arc-shaped groove is respectively provided with an entrance and an exit on two opposite sides of the fixed portion, and the entrance and the exit are both facing the inner end surface of the cover body; the thermal printer also includes a data line and a paper detection sensor, the paper detection sensor is arranged on the cover body and detects toward the paper feeding channel, the data line is connected between the paper detection sensor and the main control circuit board, and the data line passes through the base, the hinge portion, the entrance, the arc-shaped groove and the exit in sequence; the part of the data line outside the exit is attached to the inner end surface of the cover body.

[0006] A further solution is that the arcuate groove, the inlet and the outlet are provided with loading openings on the inner sides in the paper width direction.

[0007] A further solution is that the inlet and the outlet are arranged in the form of slits.

[0008] A further solution is that a positioning arc surface is provided in the arc groove, and the portion of the data line in the arc groove fits on the positioning arc surface.

[0009] A further solution is to provide a limiting block in the arc groove, and to form a limiting slit between the limiting block and the positioning arc surface.

[0010] A further solution is that the thermal printer also includes a paper guide rack, which is arranged on the cover body and located on one side of the paper outlet, the rubber roller is rotatably arranged on the paper guide rack, the paper guide rack is provided with a paper guide slope, and the paper detection sensor is arranged on the inner side of the paper guide slope; the data cable is inserted into the paper guide rack and connected to the paper detection sensor.

[0011] A further solution is that a penetration slit is formed between the edge of the paper guide frame and the inner end surface of the cover body, and the data cable penetrates into the paper guide frame through the penetration slit.

[0012] A further solution is that the portion of the data cable in the paper guide frame is attached to the inner wall of the paper guide frame.

[0013] It can be seen from the above scheme that a hinge part, an arc-shaped extension part and a fixed part are provided on the hinged arm, and an arc-shaped extension part is provided with an arc-shaped groove, and then the data line passes through the base, the hinge part and the entrance in sequence and enters the arc-shaped groove, and after being deflected and positioned by the arc-shaped groove, it extends from the exit to the cover body and fits on the inner end surface of the cover body, and is finally connected to the paper detection sensor. Since the cover body rotates around the hinge part, the data line is fit on the positioning arc surface and the inner end surface of the cover body, and is not affected during rotation. In addition, the positioning design of multiple slits is used to maintain the connection stability of the data line without affecting the normal rotation of the cover body. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of an embodiment of a thermal printer of the utility model.

[0015] Figure 2 It is a structural diagram of the thermal printer embodiment of the utility model with the cover body opened.

[0016] Figure 3 It is a structural diagram of an articulated arm in an embodiment of the thermal printer of the utility model.

[0017] Figure 4 It is a cross-sectional view of an embodiment of a thermal printer of the utility model.

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments. DETAILED DESCRIPTION

[0019] Reference Figures 1 to 4 The thermal printer includes a base 3, a cover body 1, a main control circuit board 33, a rubber roller 131, a thermal sheet, a data line 2 and a paper detection sensor 132. The thermal sheet and the main control circuit board 33 are arranged on the base 3, the rubber roller 131 is rotatably arranged on the cover body 1, a paper bin 31 is arranged on the base 3, the cover body 1 covers the paper bin 31 and is hinged to the base 3, a paper outlet 32 ​​is formed between the cover body 1 and the base 3, the thermal sheet and the rubber roller 131 are opposite to each other and form a paper feeding channel, and the paper feeding channel is connected between the paper outlet 32 ​​and the paper bin 31.

[0020] The inner end surface 11 of the cover body 1 is provided with two hinged arms 12 , and the base 3 is provided with hinged grooves at positions corresponding to the hinged arms 12 . The two hinged arms 12 are respectively hinged at the hinged grooves of the base 3 , and the hinged arms 12 can be rotatably located in the hinged grooves of the base 3 .

[0021] One of the hinged arms 12 is provided with a hinged portion 123, an arc-shaped extension portion 122 and a fixed portion 121, the fixed portion 121 is fixedly connected to the inner end surface 11 of the cover body 1, the arc-shaped extension portion 122 is connected between the fixed portion 121 and the hinged portion 123, an arc-shaped groove 124 is provided in the arc-shaped extension portion 122, the arc-shaped groove 124 is provided with an entrance 125 and an exit 126 on two opposite sides of the fixed portion 121, respectively, the entrance 125 and the exit 126 are both facing the inner end surface 11 of the cover body 1, the entrance 125 and the exit 126 are arranged in a slit, a positioning arc surface 127 is provided in the arc-shaped groove 124, a limiting block 129 is provided in the arc-shaped groove 124, and a limiting slit is formed between the limiting block 129 and the positioning arc surface 127. Of course, the hinged arm 12 on the other side can also be arranged in the same way.

[0022] The thermal printer also includes a paper guide rack 13, which is arranged on the cover body 1 and located on one side of the paper outlet 32. The rubber roller 131 is rotatably arranged on the paper guide rack 13. The paper guide rack 13 is provided with a paper guide slope 133. The paper detection sensor 132 is arranged on the inner side of the paper guide slope 133. The paper detection sensor 132 is arranged on the cover body 1 and detects toward the paper feed channel. Correspondingly, there is also a paper detection sensor arranged on the base 3 and located at the paper feed channel. The paper detection sensor 132 is arranged opposite to the paper detection sensor and detects the position of the printing paper. The paper detection sensor 132 located on the cover body 1 is connected to the main control circuit board 33 through the data line 2.

[0023] The arc groove 124, the entrance 125 and the exit 126 are provided with loading openings on the inner side in the paper width direction, which facilitates the loading of the data cable 2. The data cable 2 passes through the base 3, the hinge part 123, the entrance 125, the arc groove 124 and the exit 126 in sequence. The part 23 of the data cable 2 outside the exit 126 is attached to the inner end surface 11 of the cover body 1. When the data cable 2 passes through the limiting slit, the part 22 of the data cable 2 in the arc groove 124 is attached to the positioning arc surface 127, and the part of the data cable 2 outside the entrance 125 is attached to the outer peripheral wall 128 of the hinge part 123.

[0024] An insertion slit 135 is formed between the edge of the paper guide 13 and the inner end surface 11 of the cover 1. The data cable 2 passes through the insertion slit 135 into the cavity 134 of the paper guide 13. The data cable 2 passes through the paper guide 13 and is connected to the paper detection sensor 132. The portion 24 of the data cable 2 in the paper guide 13 is attached to the inner wall of the paper guide 13. The other end 21 of the data cable 2 passes through the base 1 and the main control circuit board 33.

[0025] As can be seen from the above, a hinged portion, an arc-shaped extension portion and a fixed portion are provided on the hinged arm, and an arc-shaped extension portion is provided with an arc-shaped groove. Then, the data cable passes through the base, the hinged portion and the entrance in sequence and enters the arc-shaped groove. After being deflected and positioned by the arc-shaped groove, the data cable extends from the exit to the cover body and fits on the inner end surface of the cover body, and is finally connected to the paper detection sensor. Since the cover body rotates around the hinged portion, the data cable is fit on the positioning arc surface and the inner end surface of the cover body, and is not affected during rotation. In addition, the positioning design of multiple slits is used to maintain the connection stability of the data cable without affecting the normal rotation of the cover body.

Claims

1. A thermal printer with tightly fitted wiring, comprising a base, a cover, a main control circuit board, a rubber roller and a thermal sheet, wherein the thermal sheet and the main control circuit board are arranged on the base, the rubber roller is rotatably arranged on the cover, a paper bin is arranged on the base, the cover covers the paper bin and is hinged to the base, a paper outlet is formed between the cover and the base, the thermal sheet and the rubber roller are opposite to each other and form a paper feeding channel, and the paper feeding channel is connected between the paper outlet and the paper bin; Features: The inner end surface of the cover body is provided with two hinged arms, and the two hinged arms are respectively hinged to the base, one of the hinged arms is provided with a hinged portion, an arc-shaped extension portion and a fixed portion, the fixed portion is fixedly connected to the inner end surface of the cover body, the arc-shaped extension portion is connected between the fixed portion and the hinged portion, an arc-shaped groove is provided in the arc-shaped extension portion, and the arc-shaped groove is respectively provided with an inlet and an outlet on two opposite sides of the fixed portion, and the inlet and the outlet are both facing the inner end surface of the cover body; The thermal printer further includes a data line and a paper detection sensor, wherein the paper detection sensor is arranged on the cover body and detects toward the paper feeding passage, the data line is connected between the paper detection sensor and the main control circuit board, and the data line passes through the base, the hinge part, the inlet, the arc groove and the outlet in sequence; The portion of the data line outside the outlet is attached to the inner end surface of the cover body.

2. The thermal printer according to claim 1, characterized in that: The arc-shaped groove, the inlet and the outlet are provided with loading openings on the inner sides in the paper width direction.

3. The thermal printer according to claim 2, characterized in that: The inlet and the outlet are arranged in a slit.

4. The thermal printer according to claim 3, characterized in that: A positioning arc surface is arranged in the arc groove, and a portion of the data line in the arc groove is attached to the positioning arc surface.

5. The thermal printer according to claim 4, characterized in that: A limiting block is arranged in the arc groove, and a limiting slit is formed between the limiting block and the positioning arc surface.

6. The thermal printer according to any one of claims 1 to 5, characterized in that: The thermal printer further comprises a paper guide frame, the paper guide frame is arranged on the cover body and is located at one side of the paper outlet, the rubber roller is rotatably arranged on the paper guide frame, the paper guide frame is provided with a paper guide inclined surface, and the paper detection sensor is arranged on the inner side surface of the paper guide inclined surface; The data line passes into the paper guide and is connected to the paper detection sensor.

7. The thermal printer according to claim 6, characterized in that: An insertion slit is formed between the edge of the paper guide frame and the inner end surface of the cover body, and the data line penetrates into the paper guide frame through the insertion slit.

8. The thermal printer according to claim 7, characterized in that: The portion of the data line in the paper guide frame is attached to the inner wall of the paper guide frame.

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