Printer

Abstract

This application discloses a printer, relating to the field of printing equipment technology. The printer includes a core support, a printhead, a main circuit board, a flexible circuit board, and an elastic element. The printhead is rotatably connected to the core support, allowing the printhead to rotate around a first axis. The printhead has a first side and a second side. The main circuit board and the elastic element are disposed on the same side of the printhead, and the first side, the elastic element, the second side, and the main circuit board are arranged sequentially along a first direction. The first end of the flexible circuit board is connected to the printhead and disposed near the second side, while the second end of the flexible circuit board is connected to the main circuit board. The elastic element drives the first side of the printhead to rotate away from the main circuit board, allowing the printhead to tilt away from the main circuit board. The printhead can move the first end of the flexible circuit board away from the second end of the flexible circuit board, thereby reducing the bending degree of the flexible circuit board and improving its service life.

Description

Technical Field

[0001] This application relates to the field of printing equipment technology, and more particularly to a printer. Background Technology

[0002] In related technologies, a printer includes a printhead, a flexible circuit board, and a main circuit board. One end of the flexible circuit board is connected to the printhead, and the other end is connected to the main circuit board. However, since the printhead is usually located above the main circuit board, the flexible circuit board needs to be bent to connect the printhead and the main circuit board. If the bending angle of the flexible circuit board is too large, it will reduce the service life of the flexible circuit board. Utility Model Content

[0003] This application provides a printer that can improve the technical problem of low lifespan of flexible circuit boards.

[0004] In a first aspect, embodiments of this application provide a printer, which includes: Movement support; A printhead is rotatably connected to the mechanism support so that the printhead can rotate about a first axis. The printhead has a first side and a second side, which are arranged along a first direction perpendicular to the first axis. The main circuit board is disposed on one side of the print head along the second direction, which is perpendicular to the first direction and the first axis, and the first side, the second side and the main circuit board are arranged sequentially along the first direction. A flexible circuit board, wherein a first end of the flexible circuit board is connected to the printhead and disposed near the second side, and a second end of the flexible circuit board is connected to the main circuit board; An elastic element is disposed between the mechanism support and the print head, and the elastic element and the main circuit board are located on the same side of the print head along the second direction. The elastic element is used to drive the first side to rotate away from the main circuit board, so that the print head tilts away from the main circuit board.

[0005] In some embodiments, the printhead has a heating wire on the side facing away from the elastic member, the heating wire extending along the extension direction of the first axis, and the first side, the elastic member, the heating wire and the first axis are distributed sequentially along the first direction, and the first end of the flexible circuit board is located between the heating wire and the first axis.

[0006] In some embodiments, the main circuit board has an upper surface disposed toward the second side, the distance between the upper surface and the second side along the first direction being d, where d satisfies: 2mm≤d≤6mm.

[0007] In some embodiments, the main circuit board has a lower surface disposed away from the second side, the lower surface having a connector, and a second end of the flexible circuit board is connected to the connector.

[0008] In some embodiments, the connector has a plug-in interface with an opening facing the flexible circuit board, and the opening direction is perpendicular to both the first direction and the first axis.

[0009] In some embodiments, the printer further includes a guide plate, the guide plate, the print head, and the elastic element arranged sequentially along the second direction, and the distance between the guide plate and the flexible circuit board along the second direction is h, where h satisfies: 1mm≤h≤3mm.

[0010] In some embodiments, the printhead has a heating wire on the side facing away from the elastic member, the heating wire extending along the extension direction of the first axis, and the first side, the heating wire, and the second side are arranged along the first direction; The guide plate is located on the side of the heating line closer to the second side. The end of the guide plate facing the heating line is the paper output end. The guide plate is used to guide the printing paper to move from the paper output end to the heating line. The paper output end is closer to the heating line than the first end of the flexible circuit board.

[0011] In some embodiments, the printhead is further provided with a protective strip, which is located on the same side of the printhead as the heating wire, between the guide plate and the printhead, and also between the heating wire and the first end of the flexible circuit board; Wherein, the projection of the first end of the flexible circuit board along the first direction falls on the projection of the protective strip along the first direction.

[0012] In some embodiments, the guide plate has a limiting protrusion on the side facing the flexible circuit board, the limiting protrusion being used to restrict the first end of the flexible circuit board from moving away from the printhead.

[0013] In some embodiments, the distance between the limiting protrusion and the flexible circuit board along the second direction is L, where L satisfies: 0.2mm≤L≤0.5mm.

[0014] In some embodiments, the flexible circuit board includes: The first segment has the first end and is connected to the print head; The second segment has the second end and is connected to the main circuit board; A bent segment having a first edge connected to the first segment, and the bent segment extending bent to connect to the second segment; The limiting protrusion is located between the first end and the first edge.

[0015] In some embodiments, the second side of the printhead is provided with a support member, and the flexible circuit board has a clearance hole for the support member to pass through.

[0016] In some embodiments, the elastic element is used to drive the printhead to tilt at a first angle α away from the main circuit board, where α satisfies: 3.5°≤α≤6°.

[0017] In some embodiments, the mechanism support includes a back plate, the elastic element is compressed between the back plate and the print head, the back plate has a first positioning protrusion on the side facing the print head, the print head has a second positioning protrusion on the side facing the back plate, one end of the elastic element is inserted into the first positioning protrusion, and the other end of the elastic element is inserted into the second positioning protrusion.

[0018] In some embodiments, the back plate has a limiting flange on the side facing the printhead, the limiting flange being located on the side of the elastic member facing the second side, the limiting flange being used to restrict the movement of the elastic member in the direction of the second side.

[0019] In some embodiments, the printhead has a centerline extending along the second direction, and the number of elastic elements is at least two, with the two elastic elements arranged on opposite sides of the centerline along the extension direction of the first axis.

[0020] The printer based on the embodiments of this application has at least the following beneficial effects: By rotatably connecting the printhead to the mechanism support, the printhead can rotate around a first axis. The printhead has a first side and a second side, which are arranged along a first direction. The main circuit board and the elastic element are located on the same side of the printhead, and the first side, the elastic element, the second side, and the main circuit board are arranged sequentially along the first direction. The first end of the flexible circuit board is connected to the printhead and located close to the second side, while the second end of the flexible circuit board is connected to the main circuit board. The elastic element can drive the first side of the printhead to rotate away from the main circuit board, allowing the printhead to tilt away from the main circuit board. During this process, the printhead can move the first end of the flexible circuit board away from the second end, thereby reducing the bending degree of the flexible circuit board and improving its service life. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 A three-dimensional structural schematic diagram of the printer provided in the embodiments of this application from a first perspective; Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure at point AA; Figure 3 for Figure 2 Enlarged structural diagram at point A; Figure 4 A cross-sectional structural diagram of the printer provided in an embodiment of this application; Figure 5 for Figure 4 Enlarged structural diagram at point B; Figure 6 A three-dimensional structural diagram of the printhead and flexible circuit board provided in an embodiment of this application; Figure 7 This is a three-dimensional structural diagram of the printer provided in an embodiment of this application from a second perspective.

[0023] Explanation of reference numerals in the attached figures: 100. Printer; 101. First axis line; 102. Center line; 1. Machine mechanism support; 11. Back plate; 111. First positioning protrusion; 112. Limiting flange; 2. Print head; 21. First side; 22. Second side; 23. Heating wire; 24. Protective strip; 25. Support component; 26. Second positioning protrusion; 3. Main circuit board; 31. Upper surface; 32. Lower surface; 33. Connector; 331. Plug interface; 4. Flexible circuit board; 41. First section; 42. Second section; 43. Bending section; 44. Clearance hole; 5. Elastic component; 6. Guide plate; 61. Paper output end; 62. Limiting protrusion. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0025] Please see Figures 1 to 3 This application provides a printer 100, which includes a mechanism support 1, a printhead 2, a main circuit board 3, a flexible circuit board 4, and an elastic element 5. The printhead 2 is rotatably connected to the mechanism support 1 so that the printhead 2 can rotate around a first axis 101. The printhead 2 has a first side 21 and a second side 22, which are arranged along a first direction perpendicular to the first axis 101. The main circuit board 3 is disposed on one side of the printhead 2 along a second direction, which is perpendicular to both the first direction and the first axis 101. All are vertical, and the first side 21, the second side 22 and the main circuit board 3 are arranged sequentially along the first direction. The first end of the flexible circuit board 4 is connected to the print head 2, and the first end of the flexible circuit board 4 is set close to the second side 22. The second end of the flexible circuit board 4 is connected to the main circuit board 3. The elastic element 5 is disposed between the mechanism support 1 and the print head 2, and the elastic element 5 and the main circuit board 3 are located on the same side of the print head 2 along the second direction. The elastic element 5 is used to drive the first side 21 to rotate away from the main circuit board 3, so that the print head 2 tilts away from the main circuit board 3.

[0026] It should be noted that the printer 100 also includes a housing, which is a component that forms the outer contour of the printer 100. The housing has a receiving cavity, and the mechanism support 1, print head 2, main circuit board 3, flexible circuit board 4 and elastic element 5 are all disposed in the receiving cavity. The mechanism support 1 can be connected to the inner wall of the housing, so that the mechanism support 1 is fixed in the receiving cavity.

[0027] The printhead 2 can heat the ribbon, causing the ink on the ribbon surface to melt and transfer to the label paper surface to form patterns or text on the label paper surface, thereby achieving printing. In order for the printhead 2 to print labels better, the printhead 2 is rotatably connected to the machine support 1, so that the printhead 2 can rotate around the first axis 101. The first direction is the height direction of the printer 100. The printhead 2 has a first side 21 and a second side 22 along the first direction. The direction of the first side 21 is above the printer 100, and the direction of the second side 22 is below the printer 100.

[0028] Figure 1 The Z-axis direction in the image represents the height direction of the printer. Figure 1 The X-axis direction in the diagram represents the length direction of printer 100. Figure 1 The Y-axis direction in the figure represents the width direction of printer 100.

[0029] The main circuit board 3 serves as the control circuit board for the printer 100. The main circuit board 3 is responsible for coordinating and controlling all functions of the printer 100, including the operation of the print head 2. The main circuit board 3 and the elastic element 5 are both located on the same side of the print head 2 along the second direction. The second direction can be the length direction of the printer 100. The first side 21, the second side 22, and the main circuit board 3 are arranged sequentially along the first direction. The main circuit board 3 is located below the print head 2. The first end of the flexible circuit board 4 is connected to the print head 2, and the first end of the flexible circuit board 4 is set close to the second side 22. In order to connect the second end of the flexible circuit board 4 to the main circuit board 3, the second end of the flexible circuit board 4 needs to be bent at a certain angle relative to the first end. This angle is defined as the bending angle.

[0030] The elastic element 5 is disposed between the mechanism support 1 and the print head 2, and the elastic element 5 can drive the first side 21 of the print head 2 to rotate away from the main circuit board 3, so that the print head 2 can tilt away from the main circuit board 3. In this process, the print head 2 can drive the first end of the flexible circuit board 4 to rotate away from the second end of the flexible circuit board 4, so that the bending angle is reduced, thereby reducing the degree of bending of the flexible circuit board 4 and improving the service life of the flexible circuit board 4.

[0031] Please see Figures 1 to 3 In some embodiments, the print head 2 has a heating wire 23 on the side facing away from the elastic member 5. The heating wire 23 extends along the extension direction of the first axis line 101, and the first side 21, the elastic member 5, the heating wire 23 and the first axis line 101 are distributed sequentially along the first direction. The first end of the flexible circuit board 4 is located between the heating wire 23 and the first axis line 101.

[0032] Optionally, the printhead 2 is provided with a heating wire 23, which is a component in the printhead 2 responsible for converting electrical energy into heat energy. The heating wire 23 can extend along the extension direction of the first axis line 101, and the first side 21 and the elastic member 5 are both located above the heating wire 23. The first axis line 101, the second side 22 and the main circuit board 3 are all located below the heating wire 23, and the first end of the flexible circuit board 4 is located between the heating wire 23 and the first axis line 101. When the elastic member 5 drives the first side 21 to rotate away from the main circuit board 3, the first end of the flexible circuit board 4 can also rotate away from the main circuit board 3, which can reduce the bending degree of the flexible circuit board 4 and improve the service life of the flexible circuit board 4.

[0033] Please see Figure 3 In some embodiments, the main circuit board 3 has an upper surface 31 disposed toward the second side 22, and the distance between the upper surface 31 and the second side 22 along the first direction is d, where d satisfies: 2mm≤d≤6mm.

[0034] Optionally, the upper surface 31 is perpendicular to the first direction. If d is less than 2mm, the distance between the main circuit board 3 and the second side 22 along the first direction is too small, that is, the distance between the main circuit board 3 and the print head 2 along the first direction is too small. It is necessary to increase the bending degree of the flexible circuit board 4 to connect the print head 2 and the main circuit board 3, which will reduce the service life of the flexible circuit board 4. If d is greater than 6mm, although the bending degree of the flexible circuit board 4 can be reduced, the distance between the main circuit board 3 and the print head 2 along the first direction is too large, which will cause the printer 100 to be too large. Therefore, when d satisfies: 2mm≤d≤6mm, the bending degree of the flexible circuit board 4 can be reduced without causing the printer 100 to be too large.

[0035] Please see Figure 2 and Figure 4 In some embodiments, the main circuit board 3 has a lower surface 32 disposed opposite to the second side 22, and the lower surface 32 has a connector 33, the second end of the flexible circuit board 4 being connected to the connector 33.

[0036] Optionally, the lower surface 32 and the upper surface 31 are arranged along the first direction on opposite sides of the main circuit board 3. The connector 33 can be soldered to the lower surface 32 and can be electrically connected to the main circuit board 3. The second end of the flexible circuit board 4 is connected to the connector 33, thereby electrically connecting the flexible circuit board 4 to the main circuit board 3. The second end of the flexible circuit board 4 extends to the bottom of the main circuit board 3. Compared to the second end of the flexible circuit board 4 being located on the upper surface 31, the second end of the flexible circuit board 4 is located on the lower surface 32, which can increase the space between the second end of the flexible circuit board 4 and the first end of the flexible circuit board 4, thereby providing more space for the flexible circuit board 4 to bend and further reducing the degree of bending of the flexible circuit board 4.

[0037] Please see Figure 2 and Figure 4 In some embodiments, the connector 33 has a plug-in interface 331, the opening of which faces the flexible circuit board 4 and is perpendicular to both the first direction and the first axis 101.

[0038] Optionally, the opening direction of the insertion interface 331 is set towards the side where the flexible circuit board 4 is located, and the opening direction is perpendicular to the first direction and the first axis 101, so that after the flexible circuit board 4 is bent once, the second end of the flexible circuit board 4 can be inserted into the insertion interface 331, which can reduce the number of bends of the flexible circuit board 4 and further increase the service life of the flexible circuit board 4.

[0039] Please see Figure 3 In some embodiments, the printer 100 further includes a guide plate 6, the guide plate 6, the print head 2 and the elastic element 5 are arranged in sequence along the second direction, and the distance between the guide plate 6 and the flexible circuit board 4 along the second direction is h, where h satisfies: 1mm≤h≤3mm.

[0040] Optionally, the guide plate 6 is disposed on the side of the print head 2 facing away from the elastic member 5, and the guide plate 6 can be used to guide the label paper to move towards the print head 2 along the paper feeding direction. The first end of the flexible circuit board 4 is located between the print head 2 and the guide plate 6. The flexible circuit board 4 and the guide plate 6 are spaced a certain distance apart along the second direction, thereby preventing wear between the flexible circuit board 4 and the guide plate 6 and increasing the service life of the flexible circuit board 4.

[0041] If h is greater than 3mm, the distance between the guide plate 6 and the flexible circuit board 4 is too large, and the label paper may get stuck in the gap between the guide plate 6 and the flexible circuit board 4, affecting the normal use of the printer 100 and increasing the size of the printer 100. If h is less than 1mm, the distance between the guide plate 6 and the flexible circuit board 4 is too small, and the heat generated by the flexible circuit board 4 is not easily dissipated. If the temperature of the flexible circuit board 4 is too high, it will reduce the service life of the flexible circuit board 4. Therefore, when h satisfies: 1mm≤h≤3mm, it can prevent wear between the flexible circuit board 4 and the guide plate 6, without affecting the heat dissipation of the flexible circuit board 4, and also prevent the label paper from getting stuck between the guide plate 6 and the flexible circuit board 4.

[0042] Please see Figure 4 and Figure 5In some embodiments, the print head 2 has a heating wire 23 on the side facing away from the elastic member 5. The heating wire 23 extends along the extension direction of the first axis 101. The first side 21, the heating wire 23, and the second side 22 are arranged along the first direction. The guide plate 6 is located on the side of the heating wire 23 near the second side 22. The end of the guide plate 6 facing the heating wire 23 is the paper output end 61. The guide plate 6 is used to guide the printing paper to move from the paper output end 61 to the heating wire 23. The paper output end 61 is closer to the heating wire 23 than the first end of the flexible circuit board 4.

[0043] Optionally, the printhead 2 has a heating wire 23 on the side facing away from the elastic member 5. The elastic member 5 is located above the heating wire 23, and the guide plate 6 is located below the heating wire 23. The elastic member 5 and the guide plate 6 are located on opposite sides of the printhead 2. The paper output end 61 of the guide plate 6 is closer to the heating wire 23 than the first end of the flexible circuit board 4, so that the paper output end 61 is located above the first end of the flexible circuit board 4. When the printer 100 is printing normally, the label paper moves from the paper output end 61 to the heating wire 23. The heating wire 23 heats the label paper to achieve printing. Thus, the guide plate 6 can cover the flexible circuit board 4, so that the flexible circuit board 4 is hidden between the guide plate 6 and the printhead 2, which can prevent foreign objects from scratching or damaging the flexible circuit board 4 and further increase the service life of the flexible circuit board 4.

[0044] Please see Figure 5 In some embodiments, the printhead 2 is further provided with a protective strip 24, which is located on the same side of the printhead 2 as the heating wire 23. The protective strip 24 is located between the guide plate 6 and the printhead 2, and the protective strip 24 is also located between the heating wire 23 and the first end of the flexible circuit board 4. The projection of the first end of the flexible circuit board 4 along the first direction falls on the projection of the protective strip 24 along the first direction.

[0045] Optionally, the protective strip 24 can extend along the extension direction of the first axis 101. The protective strip 24 is a resin strip and is located between the guide plate 6 and the print head 2. It can prevent the edge of the label paper from lifting up, thereby preventing the label paper from scratching the surface of the print head 2.

[0046] The protective strip 24 can be made of a resin with low thermal conductivity. By placing the protective strip 24 between the heating wire 23 and the first end of the flexible circuit board 4, the heat generated by the heating wire 23 can be isolated from the flexible circuit board 4, thereby preventing the flexible circuit board 4 from aging due to heat and further increasing the service life of the flexible circuit board 4.

[0047] The projection of the first end of the flexible circuit board 4 along the first direction falls on the projection of the protective strip 24 along the first direction, so that the protective strip 24 can block the flexible circuit board 4 in the first direction, which can further prevent the label paper from getting stuck between the flexible circuit board 4 and the guide plate 6.

[0048] Please see Figure 3 and Figure 5 In some embodiments, the guide plate 6 is provided with a limiting protrusion 62 on the side facing the flexible circuit board 4. The limiting protrusion 62 is used to restrict the first end of the flexible circuit board 4 from moving away from the print head 2.

[0049] It should be noted that the flexible circuit board 4 has a certain degree of elasticity. When the flexible circuit board 4 is bent, it will apply an elastic force to its first end. This elastic force will drive the first end of the flexible circuit board 4 to move away from the print head 2. When the printer 100 is hit (such as falling from a height), the first end of the flexible circuit board 4 can easily detach from the print head 2.

[0050] A limiting protrusion 62 is provided on the side of the guide plate 6 facing the flexible circuit board 4, and the limiting protrusion 62 protrudes towards the side where the first end of the flexible circuit board 4 is located. When the printer 100 is hit, the limiting protrusion 62 can abut against the flexible circuit board 4 to restrict the first end of the flexible circuit board 4 from moving away from the print head 2. Thus, when the printer 100 is hit, the limiting protrusion 62 can reduce the probability that the first end of the flexible circuit board 4 will detach from the print head 2.

[0051] Please see Figure 3 In some embodiments, the distance between the limiting protrusion 62 and the flexible circuit board 4 along the second direction is L, where L satisfies: 0.2mm≤L≤0.5mm.

[0052] Under normal use, the limiting protrusion 62 of the printer 100 does not contact the flexible circuit board 4, and the distance between the limiting protrusion 62 and the flexible circuit board 4 along the second direction is L, which can prevent the limiting protrusion 62 from causing wear to the flexible circuit board 4.

[0053] If L is less than 0.2mm, the distance between the limiting protrusion 62 and the flexible circuit board 4 along the second direction is too small, resulting in less space for the flexible circuit board 4 to radiate heat outward. The heat generated by the flexible circuit board 4 cannot be dissipated in time, and the excessive temperature of the flexible circuit board 4 will reduce its service life. If L is greater than 0.5mm, the distance between the limiting protrusion 62 and the flexible circuit board 4 along the second direction is too large, and the limiting protrusion 62 has a weak limiting effect on the flexible circuit board 4. The limiting protrusion 62 may not be able to prevent the flexible circuit board 4 from detaching from the print head 2. Therefore, when L satisfies: 0.2mm≤L≤0.5mm, the limiting protrusion 62 can both prevent the flexible circuit board 4 from detaching from the print head 2 and will not affect the heat dissipation of the flexible circuit board 4.

[0054] Please see Figure 3 and Figure 5In some embodiments, the flexible circuit board 4 includes a first segment 41, a second segment 42, and a bent segment 43. The first segment 41 has a first end of the flexible circuit board 4 and is connected to the print head 2. The second segment 42 has a second end of the flexible circuit board 4 and is connected to the main circuit board 3. The bent segment 43 has a first edge connected to the first segment 41 and bends to connect to the second segment 42. A limiting protrusion 62 is located between the first end and the first edge.

[0055] Optionally, the flexible circuit board 4 is bent into an arc-shaped structure, with the first segment 41, the bent segment 43, and the second segment 42 connected in sequence. The end of the first segment 41 away from the bent segment 43 is the first end of the flexible circuit board 4, connecting the first segment 41 to the print head 2. The end of the second segment 42 away from the bent segment 43 is the second end of the flexible circuit board 4, connecting the second segment 42 to the main circuit board 3. The bent segment 43 is the bent part of the flexible circuit board 4, and the connection between the bent segment 43 and the first segment 41 is the first edge. The limiting protrusion 62 is located between the first end and the first edge of the flexible circuit board 4, so that the limiting protrusion 62 can limit the first segment 41. Thus, the limiting protrusion 62 can limit the part of the flexible circuit board 4 connected to the print head 2, further reducing the risk of the flexible circuit board 4 becoming detached from the print head 2.

[0056] Please see Figure 5 and Figure 6 In some embodiments, the second side 22 of the print head 2 is provided with a support member 25, and the flexible circuit board 4 has a clearance hole 44 for the support member 25 to pass through.

[0057] Optionally, in order to enable the print head 2 to adapt to label paper of different thicknesses and to adapt to the tilt of the glue roller, a support member 25 is provided on the second side 22 of the print head 2. Since the bending section 43 of the flexible circuit board 4 is located directly below the second side 22, the bending section 43 and the support member 25 are arranged opposite to each other. The clearance hole 44 is set in the bending section 43. When the print head 2 rotates, the support member 25 can pass through the clearance hole 44, so that the flexible circuit board 4 will not be pushed up by the support member 25, which can prevent the flexible circuit board 4 from being worn and further increase the service life of the flexible circuit board 4.

[0058] Please see Figure 7 In some embodiments, the elastic element 5 is used to drive the print head 2 to tilt at a first angle α away from the main circuit board 3, where α satisfies: 3.5°≤α≤6°.

[0059] Optionally, if the first angle α is less than 3.5°, the angle at which the print head 2 tilts is too small to reduce the bending angle of the flexible circuit board 4. If the first angle α is greater than 6°, the angle at which the print head 2 tilts is too large, causing the label paper to bend at a large angle during paper feeding, resulting in uneven paper feeding by the printer 100. Therefore, when α satisfies the condition 3.5°≤α≤6°, it can reduce the bending angle of the flexible circuit board 4 without affecting the normal paper feeding of the printer 100.

[0060] Please see Figure 1 and Figure 7 In some embodiments, the mechanism support 1 includes a back plate 11, an elastic member 5 is compressed between the back plate 11 and the print head 2, the back plate 11 is provided with a first positioning protrusion 111 on the side facing the print head 2, the print head 2 is provided with a second positioning protrusion 26 on the side facing the back plate 11, one end of the elastic member 5 is inserted into the first positioning protrusion 111, and the other end of the elastic member 5 is inserted into the second positioning protrusion 26.

[0061] Optionally, the back plate 11 and the print head 2 are arranged along the second direction, and the back plate 11 is located on the side of the print head 2 away from the heating line 23. The back plate 11 has a first positioning protrusion 111 on the side facing the print head 2, and the print head 2 has a second positioning protrusion 26 on the side facing the back plate 11. The elastic member 5 is a compression spring. One end of the elastic member 5 can be sleeved on the first positioning protrusion 111, and the other end of the elastic member 5 can be sleeved on the second positioning protrusion 26. The first positioning protrusion 111 and the second positioning protrusion 26 can together restrict the movement of the elastic member 5 in the first direction, so that the elastic member 5 can be stably compressed between the back plate 11 and the print head 2, thereby the elastic member 5 can stably drive the first side 21 to rotate away from the main circuit board 3.

[0062] Please see Figure 2 and Figure 4 In some embodiments, the back plate 11 also has a limiting flange 112 on the side facing the print head 2. The limiting flange 112 is located on the side of the elastic member 5 facing the second side 22. The limiting flange 112 is used to restrict the movement of the elastic member 5 in the direction of the second side 22.

[0063] Optionally, the limiting flange 112 is located on the side of the back plate 11 facing the print head 2, and the elastic member 5, the limiting flange 112, the first axis line 101 and the second side 22 are arranged sequentially along the first direction. The limiting flange 112 can contact the elastic member 5 to restrict the elastic member 5 from moving in the direction of the second side 22, so that the elastic member 5 can be stably set above the first axis line 101, thereby the elastic member 5 can stably drive the first side 21 to rotate away from the main circuit board 3.

[0064] Please see Figure 1In some embodiments, the print head 2 has a centerline 102 extending along a second direction, and the number of elastic elements 5 is at least two, with the two elastic elements 5 arranged on opposite sides of the centerline 102 along the extension direction of the first axis 101.

[0065] Optionally, the two elastic elements 5 are arranged along the extension direction of the first axis line 101, and the two elastic elements 5 are located on opposite sides of the center line 102, so that the force on the opposite ends of the print head 2 along the extension direction of the first axis line 101 is more uniform, and the two elastic elements 5 can more smoothly drive the print head 2 to tilt away from the main circuit board 3.

[0066] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this application, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0067] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A printer, characterized in that, include: Movement support; A printhead is rotatably connected to the mechanism support so that the printhead can rotate about a first axis. The printhead has a first side and a second side, which are arranged along a first direction perpendicular to the first axis. The main circuit board is disposed on one side of the print head along the second direction, which is perpendicular to the first direction and the first axis, and the first side, the second side and the main circuit board are arranged sequentially along the first direction. A flexible circuit board, wherein a first end of the flexible circuit board is connected to the printhead and disposed near the second side, and a second end of the flexible circuit board is connected to the main circuit board; An elastic element is disposed between the mechanism support and the print head, and the elastic element and the main circuit board are located on the same side of the print head along the second direction. The elastic element is used to drive the first side to rotate away from the main circuit board, so that the print head tilts away from the main circuit board.

2. The printer according to claim 1, characterized in that, The printhead has a heating wire on the side facing away from the elastic member. The heating wire extends along the extension direction of the first axis line, and the first side, the elastic member, the heating wire, and the first axis line are distributed sequentially along the first direction. The first end of the flexible circuit board is located between the heating wire and the first axis line.

3. The printer according to claim 1, characterized in that, The main circuit board has an upper surface facing the second side, and the distance between the upper surface and the second side along the first direction is d, where d satisfies: 2mm≤d≤6mm.

4. The printer according to claim 1, characterized in that, The main circuit board has a lower surface facing away from the second side, and the lower surface has a connector. The second end of the flexible circuit board is connected to the connector.

5. The printer according to claim 4, characterized in that, The connector has a plug-in interface with the opening facing the flexible circuit board, and the opening direction is perpendicular to both the first direction and the first axis.

6. The printer according to claim 1, characterized in that, The printer also includes a guide plate, the guide plate, the print head and the elastic element are arranged sequentially along the second direction, and the distance between the guide plate and the flexible circuit board along the second direction is h, where h satisfies: 1mm≤h≤3mm.

7. The printer according to claim 6, characterized in that, The printhead has a heating wire on the side facing away from the elastic member. The heating wire extends along the extension direction of the first axis. The first side, the heating wire, and the second side are arranged along the first direction. The guide plate is located on the side of the heating line closer to the second side. The end of the guide plate facing the heating line is the paper output end. The guide plate is used to guide the printing paper to move from the paper output end to the heating line. The paper output end is closer to the heating line than the first end of the flexible circuit board.

8. The printer according to claim 7, characterized in that, The printhead is also provided with a protective strip, which is located on the same side of the printhead as the heating wire. The protective strip is located between the guide plate and the printhead, and is also located between the heating wire and the first end of the flexible circuit board. Wherein, the projection of the first end of the flexible circuit board along the first direction falls on the projection of the protective strip along the first direction.

9. The printer according to claim 6, characterized in that, The guide plate has a limiting protrusion on the side facing the flexible circuit board, which is used to restrict the first end of the flexible circuit board from moving away from the print head.

10. The printer according to claim 9, characterized in that, The distance between the limiting protrusion and the flexible circuit board along the second direction is L, where L satisfies: 0.2mm≤L≤0.5mm.

11. The printer according to claim 9, characterized in that, The flexible circuit board includes: The first segment has the first end and is connected to the print head; The second segment has the second end and is connected to the main circuit board; A bent segment having a first edge connected to the first segment, and the bent segment extending bent to connect to the second segment; The limiting protrusion is located between the first end and the first edge.

12. The printer according to claim 1, characterized in that, The second side of the printhead is provided with a support member, and the flexible circuit board has a clearance hole for the support member to pass through.

13. The printer according to claim 1, characterized in that, The elastic element is used to drive the print head to tilt at a first angle α away from the main circuit board, where α satisfies: 3.5°≤α≤6°.

14. The printer according to claim 1, characterized in that, The mechanism support includes a back plate, and the elastic element is compressed between the back plate and the print head. The back plate has a first positioning protrusion on the side facing the print head, and the print head has a second positioning protrusion on the side facing the back plate. One end of the elastic element is inserted into the first positioning protrusion, and the other end of the elastic element is inserted into the second positioning protrusion.

15. The printer according to claim 14, characterized in that, The back plate also has a limiting flange on the side facing the print head. The limiting flange is located on the side of the elastic member facing the second side and is used to restrict the movement of the elastic member in the direction of the second side.

16. The printer according to claim 1, characterized in that, The printhead has a centerline extending along the second direction, and the number of elastic elements is at least two, with the two elastic elements arranged on opposite sides of the centerline along the extension direction of the first axis.

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