Thermal printing head and printer

Abstract

The utility model relates to a thermal printing head and a printer. The thermal printing head comprises a rack; the rubber roller assembly is rotatably arranged on the rack; the heating assembly is arranged on the rack, the rubber roller assembly and the heating assembly are oppositely arranged, and a paper feeding channel allowing paper to penetrate through for printing is formed between the rubber roller assembly and the heating assembly; the V-shaped elastic piece is detachably arranged on the rack, an opening of the V-shaped elastic piece faces upwards, one end of the V-shaped elastic piece abuts against the side, away from the rubber roller assembly, of the heating assembly, and the other end of the V-shaped elastic piece abuts against the rack. According to the thermal printing head, the V-shaped elastic piece is adopted, and compared with a traditional elastic piece such as a cylindrical spiral spring, point contact is changed into surface contact, so that the connecting area can be increased, force application is more stable, meanwhile, the V-shaped elastic piece is more convenient for installation personnel to extrude and deform for installation, connection is more convenient and firmer, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of printing equipment, in particular to a thermal printing head and a printer. Background Art

[0002] In recent years, with the rapid development of food delivery platforms, the food delivery industry in China has experienced explosive growth. The traditional food delivery method is for merchants to prepare goods and food delivery orders and hand them over to delivery personnel for delivery. Therefore, with the emergence of smart cloud printers, merchants are provided with customers to place orders freely online, and the platform sends the orders to the merchant business, solving the cumbersome handwritten orders and telephone orders and the business volume problem of merchants. Among them, the thermal smart cloud printer uses thermal printing technology, using the heating component to selectively heat the specific position of the thermal paper to print the required patterns, characters, numbers and other content. It has the advantages of convenient replacement of consumables, fast printing speed and small size, which further improves the user's work efficiency.

[0003] In order to maintain the smoothness of paper feeding during printing, thermal printers usually use spring components to connect the heating component to the frame, so that the heating component has a certain degree of elasticity and flexibility relative to the frame. However, the assembly of springs in thermal printers on the market is relatively difficult. The installer needs to squeeze and deform the spring to install it, which is inconvenient and difficult to fix. In addition, since the contact area between the spring and the heating component is too small, it is impossible to provide a stable force to the heating component, so it is easy to cause carbon deposits, compression, and unclear printing after long-term operation. Utility Model Content

[0004] Based on this, it is necessary to provide a thermal print head and printer to address the problems in the prior art that the spring components used to connect the heating components and the frame of some thermal printers are difficult to assemble, difficult to fix, and the force is not stable, which easily leads to carbon deposits, print compression, and unclear printing.

[0005] A thermal print head comprises: a frame; a rubber roller assembly, the rubber roller assembly being rotatably arranged on the frame; a heating assembly, the heating assembly being arranged on the frame, the rubber roller assembly and the heating assembly being arranged opposite to each other and forming a paper feeding passage for paper to pass through for printing; a V-shaped spring piece, the V-shaped spring piece being detachably arranged on the frame, the opening of the V-shaped spring piece being arranged upward, one end of the V-shaped spring piece being abutted against a side of the heating assembly away from the rubber roller assembly, and the other end of the V-shaped spring piece being abutted against the frame.

[0006] The present application provides a thermal print head, which forms a positioning effect on the heating component by arranging a V-shaped spring sheet between the frame and the heating component and respectively abutting against the two, thereby ensuring that the heating component can effectively cooperate with the rubber roller component for printing, while also having a certain elastic activity space to ensure the stability of the printer paper feeding. The thermal print head of the present application adopts a V-shaped spring sheet, which changes from point contact to surface contact compared to traditional elastic parts such as cylindrical helical springs, thereby increasing the connection area and making the force application more stable. At the same time, the V-shaped spring sheet is easier for the installer to extrude and deform for installation, and the connection is more convenient and reliable, which is conducive to improving production efficiency.

[0007] In one embodiment, the V-shaped spring piece includes a connecting portion, a first elastic wall and a second elastic wall, the first elastic wall is connected to the second elastic wall through the connecting portion, the first elastic wall and the second elastic wall are arranged opposite to each other, the free end of the first elastic wall and the free end of the second elastic wall are far away from each other, the first elastic wall is adapted to be installed with the frame, and the second elastic wall is against the side of the heating component away from the rubber roller component. By adopting the above structure, the first elastic wall and the second elastic wall are respectively against the frame and the heating component, so that the heating component is positioned under the cooperation of the first elastic wall and the second elastic wall, so that the heating component and the rubber roller component can form effective friction surfaces with the thermal paper respectively, ensuring that the heating component can effectively cooperate with the rubber roller component to print, and also has a certain elastic activity space, and at the same time, the first elastic wall is adapted to be installed with the frame, so that the positioning and installation of the V-shaped spring piece can be made more convenient and quick.

[0008] In one embodiment, one of the first elastic wall and the frame is provided with a positioning column, and the other of the first elastic wall and the frame is provided with a positioning hole that is engaged with the positioning column, and the positioning column is engaged in the positioning hole. The V-shaped spring is in a compressed state during the assembly process to the frame, and when the positioning hole on the first elastic wall slides to the positioning column, the elastic potential energy stored in the V-shaped spring will drive the positioning hole to engage with the positioning column to achieve fixation, so that there is no need to use fasteners such as screws, and the V-shaped spring can be effectively prevented from accidentally separating from the frame under the cooperation of the positioning column and the positioning hole.

[0009] In one embodiment, the frame is formed with the positioning column, and the edge of the positioning column close to the heating component is chamfered or rounded. By adopting the chamfered or rounded structure, the V-shaped spring piece can avoid jamming when it abuts against the positioning column during the assembly process of the frame, and can naturally continue to slide downward under the guidance of the chamfered or rounded structure until the positioning hole is opposite to the positioning column and the clamping is completed.

[0010] In one embodiment, the number of the positioning posts is three, the number of the positioning holes is the same as the number of the positioning posts, and the three positioning posts are arranged in an inverted triangle shape. By adopting the above structure, the effective fixing area between the first elastic wall and the frame can be increased, and the stability principle of the triangle can be used to exert a good mechanical stability effect, and the inverted triangle shape arrangement can adapt to the V-shaped spring piece to be plugged in and assembled downward, which is convenient for operation.

[0011] In one embodiment, the V-shaped spring further includes a shielding portion, which is disposed on the free end of the first elastic wall or the second elastic wall, and is located at the opening of the V-shaped spring so that the opening is shielded. The shielding portion can better meet the use needs of the printer in a working environment with a lot of dust and mud. The shielding portion can effectively prevent foreign matter from accidentally falling into the first elastic wall and the second elastic wall through the opening of the V-shaped spring, and prevent the accumulation of foreign matter between the first elastic wall and the second elastic wall from causing the extrusion deformation of the spring to be blocked, resulting in the inability to effectively provide an elastic activity space for the heating component, affecting the smoothness of the printer's paper feeding and thus causing problems such as printing compression, carbon deposition, and blurred or blank paper feeding.

[0012] In one embodiment, the width of the second elastic wall increases in the direction away from the connecting portion. By adopting the above structure, the contact area between the second elastic wall and the heating component can be increased, ensuring that the V-shaped spring sheet can provide a stable force for the heating component, ensuring that the heating component can effectively rub against the thermal paper to uniformly heat each position on the thermal paper.

[0013] In one embodiment, the frame includes a connecting plate, a first side plate and a second side plate, the first side plate is arranged opposite to the second side plate, the first side plate is connected to the second side plate through the connecting plate, the two ends of the heating component are respectively connected to the first side plate and the second side plate, the V-shaped spring is located between the connecting plate and the heating component, and the first elastic wall is adapted to be installed with the connecting plate. By adopting the above structure, the first elastic wall and the second elastic wall are respectively against the connecting plate and the heating component, so that the heating component is positioned under the cooperation of the first elastic wall and the second elastic wall, ensuring that the heating component can effectively cooperate with the rubber roller component for printing, and also has a certain elastic activity space, and at the same time, the first elastic wall is adapted to be installed with the connecting plate, which can make the positioning and installation of the V-shaped spring more convenient and quick.

[0014] In one embodiment, the connecting plate is provided with a through hole, and the through hole is arranged opposite to the first elastic wall. By providing the through hole on the connecting plate, when repairing or reworking, only a tool needs to be used to pass through the through hole and press the first elastic wall to separate the positioning column from the positioning hole, thereby making it easy to remove the V-shaped spring piece from the frame.

[0015] In one embodiment, there are multiple through holes, and the multiple through holes are distributed at intervals.

[0016] In one embodiment, the connection plate is provided with a limiting groove, and the first elastic wall is adapted to be installed in the limiting groove. The setting of the limiting groove can form a positioning effect, so that the installer can insert the first elastic wall through the limiting groove, so that the positioning hole and the positioning column can be smoothly aligned and clamped. In addition, the first elastic wall is arranged in the limiting groove, which can effectively prevent the V-shaped spring from being offset or loosened when the thermal printer collides.

[0017] In one of the embodiments, the bottom wall of the limiting groove is provided with the through hole.

[0018] In one embodiment, the first side plate, the connecting plate, the second side plate and the heating component enclose a mounting cavity, the V-shaped spring piece is arranged in the mounting cavity, the connecting plate is provided with a heat dissipation hole, and the heat dissipation hole is connected to the mounting cavity. By adopting the above structure, the heat dissipation hole connected to the mounting cavity on the connecting plate can facilitate the flow of gas in the mounting cavity, thereby facilitating the heat dissipation efficiency of the heating component.

[0019] In one embodiment, the heating assembly includes a heating sheet and a fixed bracket, the fixed bracket is arranged on the frame, the heating sheet is arranged on the fixed bracket, the heating sheet and the rubber roller assembly are arranged opposite to each other and form the paper feeding channel, and the end of the V-shaped spring sheet away from the frame abuts against the side of the fixed bracket away from the heating sheet. The heating sheet is fixedly arranged on the fixed bracket and positioned on the frame through the fixed bracket. The heating sheet can cooperate with the rubber roller assembly to form a paper feeding channel. When printing, the thermal paper passes through between the heating sheet and the rubber roller assembly for output. The V-shaped spring sheet abuts against the frame and the fixed bracket respectively, thereby providing a flexible activity space for the heating sheet to work and ensuring the stability of the printer paper feeding.

[0020] In one embodiment, the fixing bracket is located between the first side plate and the second side plate, and the fixing bracket is formed with a clamping protrusion on both sides, and the first side plate and the second side plate are respectively provided with a notch, and the buckle extends into the adjacent notch. Through the connection and cooperation between the clamping protrusion and the notch, the fixing bracket can be positioned and installed on the frame, and the V-shaped spring sheet further forms a positioning effect on the fixing bracket under the contact, thereby ensuring that the heating sheet can effectively cooperate with the rubber roller assembly for printing, while also having a certain elastic activity space.

[0021] In one embodiment, the V-shaped spring piece and the frame are both made of metal materials. By arranging a V-shaped spring piece between the heating component and the frame, the V-shaped spring piece is tightly connected to the heating component and the frame respectively, and the V-shaped spring piece and the fixing bracket are both made of metal materials, so that the heat generated by the operation of the heating component can be quickly transferred to the frame through the V-shaped spring piece, and heat is exchanged with the outside air through the frame, thereby allowing the heat in the heating component and the thermal print head to be quickly dissipated, which is beneficial to improving the stability and service life of the heating component and other components in the thermal print head.

[0022] In one embodiment, a driving assembly is further included, the driving assembly includes a motor and a gear set, the motor and the gear set are arranged on the frame, the input end of the gear set is drivingly connected to the output shaft of the motor, and the output end of the gear set is drivingly connected to the rubber roller assembly. Further, the motor is a stepping motor.

[0023] In one of the embodiments, a flat cable is further included, and the flat cable is electrically connected to the heating component and / or the motor.

[0024] In one embodiment, a retaining spring is further included, and the retaining spring is arranged on the side wall of the frame, and the side wall of the frame is provided with an axial hole, and one end of the rubber roller assembly is inserted into the axial hole, and the opposite sides of the rubber roller assembly are respectively against the retaining spring and the side wall of the axial hole. By adopting the above structure, the retaining spring and the side wall of the axial hole cooperate to clamp and fix one end of the rubber roller assembly in the frame, and when disassembling, the retaining spring only needs to be pulled to make the retaining spring elastically deformed to easily disassemble the rubber roller assembly, which is convenient for disassembly and assembly.

[0025] A second aspect of the present application provides a printer.

[0026] A printer comprises: a printer body; the above-mentioned thermal print head, wherein the thermal print head is arranged on the printer body. The printer provided in the second aspect of the present application optimizes the spring connecting the frame and the heating component by adopting any of the above-mentioned thermal print heads, and adopts a V-shaped spring piece, which changes the point contact to the surface contact compared to traditional elastic parts such as cylindrical coil springs, thereby increasing the connection area, making the force application more stable, and promoting the heat dissipation of the thermal print head to a certain extent. At the same time, the V-shaped spring piece is more convenient for the installer to squeeze and deform for installation, and the connection is more convenient and reliable, which is conducive to improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a first stereoscopic view of a thermal print head according to one embodiment;

[0028] Figure 2 is a second perspective view of a thermal print head according to one embodiment;

[0029] Figure 3 An exploded view of a thermal print head according to one embodiment;

[0030] Figure 4 is a cross-sectional view of a thermal print head according to one embodiment;

[0031] Figure 5 is a three-dimensional diagram of a V-shaped spring piece according to an embodiment;

[0032] Figure 6 is a three-dimensional view of a frame according to an embodiment;

[0033] Figure 7 A three-dimensional view of a heating component according to one embodiment.

[0034] The corresponding relationship between the reference numerals and the component names is as follows:

[0035] 1 frame, 101 through hole, 102 limiting groove, 103 installation cavity, 104 heat dissipation hole, 105 notch, 106 shaft hole, 11 connecting plate, 111 positioning column, 12 first side plate, 13 second side plate;

[0036] 2 rubber roller assembly;

[0037] 3 heating component, 31 heating sheet, 32 fixing bracket, 321 clamping convex;

[0038] 4 V-shaped spring piece, 401 opening, 402 positioning hole, 41 connecting portion, 42 first elastic wall, 43 second elastic wall, 44 shielding portion;

[0039] 5 driving assembly, 51 motor, 52 gear set;

[0040] 6 rows of wires;

[0041] 7. Circlip. DETAILED DESCRIPTION

[0042] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0043] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0044] The thermal print heads according to some embodiments of the present invention are described below with reference to the accompanying drawings.

[0045] like Figures 1 to 7 As shown, this embodiment discloses a thermal print head, including: a frame 1; a rubber roller assembly 2, which is rotatably arranged on the frame 1; a heating assembly 3, which is arranged on the frame 1, and the rubber roller assembly 2 and the heating assembly 3 are arranged opposite to each other and form a paper feeding channel for paper to pass through for printing; a V-shaped spring piece 4, which is detachably arranged on the frame 1, and the opening 401 of the V-shaped spring piece 4 is arranged upward, one end of the V-shaped spring piece 4 is against the side of the heating assembly 3 away from the rubber roller assembly 2, and the other end of the V-shaped spring piece 4 is against the frame 1.

[0046] The present application provides a thermal print head, which forms a positioning effect on the heating component 3 by setting a V-shaped spring piece 4 between the frame 1 and the heating component 3 and respectively abutting against the two, so that the heating component 3 is positioned under the abutment of the V-shaped spring piece 4, ensuring that the heating component 3 can effectively cooperate with the rubber roller component 2 for printing, while also having a certain elastic activity space to ensure the stability of the printer paper feeding. The thermal print head of the present application adopts a V-shaped spring piece 4, which changes from point contact to surface contact compared to traditional elastic parts such as cylindrical helical springs, thereby increasing the connection area and making the force application more stable. At the same time, the V-shaped spring piece 4 is easier for the installer to squeeze and deform for installation, and the connection is more convenient and reliable, which is conducive to improving production efficiency.

[0047] like Figure 4 and Figure 5As shown, in addition to the features of the above embodiment, this embodiment further defines that: the V-shaped spring piece 4 includes a connecting portion 41, a first elastic wall 42 and a second elastic wall 43, the first elastic wall 42 is connected to the second elastic wall 43 through the connecting portion 41, the first elastic wall 42 and the second elastic wall 43 are arranged opposite to each other, the free end of the first elastic wall 42 and the free end of the second elastic wall 43 are far away from each other, the first elastic wall 42 is adapted to be installed with the frame 1, and the second elastic wall 43 is against the side of the heating component 3 away from the rubber roller assembly 2. By adopting the above structure, the first elastic wall 42 and the second elastic wall 43 are respectively against the frame 1 and the heating component 3, so that the heating component 3 is positioned under the cooperation of the first elastic wall 42 and the second elastic wall 43, so that the heating component 3 and the rubber roller assembly 2 can form effective friction surfaces with the thermal paper respectively, ensuring that the heating component 3 can effectively cooperate with the rubber roller assembly 2 to print, and also have a certain elastic activity space, and at the same time, the first elastic wall 42 is adapted to be installed with the frame 1, so that the positioning and installation of the V-shaped spring piece 4 can be made more convenient and quick.

[0048] like Figures 4 to 6 As shown, in addition to the features of the above-mentioned embodiments, this embodiment further defines that: one of the first elastic wall 42 and the frame 1 is provided with a positioning column 111, and the other of the first elastic wall 42 and the frame 1 is provided with a positioning hole 402 that is engaged with the positioning column 111, and the positioning column 111 is engaged in the positioning hole 402. The V-shaped spring piece 4 is in a compressed state during the assembly process to the frame 1. When the positioning hole 402 on the first elastic wall 42 slides to the positioning column 111, the elastic potential energy stored in the V-shaped spring piece 4 will drive the positioning hole 402 to engage with the positioning column 111 to achieve fixation, so that there is no need to use fasteners such as screws, and the V-shaped spring piece 4 can be effectively prevented from accidentally separating from the frame 1 under the cooperation of the positioning column 111 and the positioning hole 402.

[0049] like Figure 4 and Figure 6 As shown, in addition to the features of the above-mentioned embodiment, this embodiment further defines that: the frame 1 is formed with a positioning column 111, and a chamfer or rounding is formed on one side edge of the positioning column 111 close to the heating component 3. By adopting the chamfer or rounding structure, the V-shaped spring piece 4 can avoid jamming when it abuts against the positioning column 111 during the assembly process of the frame 1, and can naturally continue to slide downward under the guidance of the chamfer or rounding until the positioning hole 402 is opposite to the positioning column 111 and the clamping is completed.

[0050] like Figure 6As shown, in addition to the features of the above embodiment, this embodiment further defines that: the number of positioning posts 111 is three, the number of positioning holes 402 is consistent with the number of positioning posts 111, and the three positioning posts 111 are arranged in an inverted Chinese-P-shape. By adopting the above structure, the effective fixing area between the first elastic wall 42 and the frame 1 can be increased, the stability principle of the triangle can be used to exert a good mechanical stability effect, and the inverted Chinese-P-shape arrangement can adapt to the V-shaped spring piece 4 to be plugged in and assembled downward, which is convenient for operation.

[0051] like Figure 4 and Figure 5 As shown, in addition to the features of the above-mentioned embodiment, this embodiment further defines that: the V-shaped spring piece 4 also includes a shielding portion 44, which is arranged on the free end of the first elastic wall 42 or the second elastic wall 43, and the shielding portion 44 is located at the opening 401 of the V-shaped spring so that the opening 401 is shielded. By setting the shielding portion 44, the use needs of the printer in a working environment with a lot of dust and mud can be better met. The shielding portion 44 can effectively prevent foreign matter from accidentally falling into the first elastic wall 42 and the second elastic wall 43 through the opening 401 of the V-shaped spring, and prevent the accumulation of foreign matter between the first elastic wall 42 and the second elastic wall 43 from causing the extrusion deformation of the spring piece to be blocked, resulting in the inability to effectively provide an elastic activity space for the heating component 3, affecting the stability of the printer's paper feeding and thus causing problems such as printing compression, carbon deposition, and blurred or blank paper feeding.

[0052] like Figure 3 and Figure 5 As shown, in addition to the features of the above embodiment, this embodiment further defines that: the width of the second elastic wall 43 increases in the direction away from the connecting portion 41. By adopting the above structure, the contact area between the second elastic wall 43 and the heating component 3 can be increased, ensuring that the V-shaped spring piece 4 can provide a stable force for the heating component 3, ensuring that the heating component 3 can effectively rub against the thermal paper to uniformly heat each position on the thermal paper.

[0053] like Figure 3 and Figure 6As shown, in addition to the features of the above embodiment, the present embodiment further defines that: the frame 1 includes a connecting plate 11, a first side plate 12 and a second side plate 13, the first side plate 12 and the second side plate 13 are arranged opposite to each other, the first side plate 12 is connected to the second side plate 13 through the connecting plate 11, the two ends of the heating assembly 3 are respectively connected to the first side plate 12 and the second side plate 13, the V-shaped spring sheet 4 is located between the connecting plate 11 and the heating assembly 3, and the first elastic wall 42 is adapted to be installed with the connecting plate 11. By adopting the above structure, the first elastic wall 42 and the second elastic wall 43 are respectively against the connecting plate 11 and the heating assembly 3, so that the heating assembly 3 is positioned under the cooperation of the first elastic wall 42 and the second elastic wall 43, ensuring that the heating assembly 3 can effectively cooperate with the rubber roller assembly 2 for printing, and also has a certain elastic activity space, and at the same time, the first elastic wall 42 is adapted to be installed with the connecting plate 11, so that the positioning and installation of the V-shaped spring sheet 4 can be made more convenient and quick.

[0054] like Figure 2 and Figure 6 As shown, in addition to the features of the above embodiment, this embodiment further defines that: the connecting plate 11 is provided with a through hole 101, and the through hole 101 is arranged opposite to the first elastic wall 42. By providing the through hole 101 on the connecting plate 11, when repairing or reworking, it is only necessary to use a tool to pass through the through hole 101 and press the first elastic wall 42 to separate the positioning column 111 from the positioning hole 402, and then the V-shaped spring sheet 4 can be easily taken out from the frame 1.

[0055] like Figure 2 and Figure 6 As shown, in addition to the features of the above embodiments, this embodiment further defines that: the number of through holes 101 is multiple, and the multiple through holes 101 are distributed at intervals.

[0056] like Figure 4 and Figure 6 As shown, in addition to the features of the above-mentioned embodiment, this embodiment further defines that: the connection plate 11 is provided with a limiting groove 102, and the first elastic wall 42 is adapted to be installed in the limiting groove 102. The setting of the limiting groove 102 can form a positioning effect, so that the installer can insert the first elastic wall 42 through the limiting groove 102, so that the positioning hole 402 and the positioning column 111 can be smoothly aligned and clamped. In addition, the first elastic wall 42 is arranged in the limiting groove 102, which can effectively prevent the V-shaped spring piece 4 from being offset or loosened when the thermal printer collides.

[0057] like Figure 6 As shown, in addition to the features of the above embodiments, this embodiment further defines that: a through hole 101 is provided on the bottom wall of the limiting groove 102 .

[0058] like Figure 4 and Figure 6As shown, in addition to the features of the above embodiment, this embodiment further defines that: the first side plate 12, the connecting plate 11, the second side plate 13 and the heating component 3 enclose a mounting cavity 103, the V-shaped spring piece 4 is arranged in the mounting cavity 103, the connecting plate 11 is provided with a heat dissipation hole 104, and the heat dissipation hole 104 is connected to the mounting cavity 103. By adopting the above structure, the heat dissipation hole 104 connected to the mounting cavity 103 on the connecting plate 11 can facilitate the gas flow in the mounting cavity 103, thereby facilitating the improvement of the heat dissipation efficiency of the heating component 3.

[0059] like Figure 4 and Figure 7 As shown, in addition to the features of the above-mentioned embodiment, this embodiment further defines that: the heating assembly 3 includes a heating sheet 31 and a fixed bracket 32, the fixed bracket 32 ​​is arranged on the frame 1, the heating sheet 31 is arranged on the fixed bracket 32, the heating sheet 31 and the rubber roller assembly 2 are arranged opposite to each other and form a paper feeding channel therebetween, and the end of the V-shaped spring sheet 4 away from the frame 1 abuts against the side of the fixed bracket 32 ​​away from the heating sheet 31. The heating sheet 31 is fixedly arranged on the fixed bracket 32 ​​and positioned and installed on the frame 1 through the fixed bracket 32. The heating sheet 31 can cooperate with the rubber roller assembly 2 to form a paper feeding channel. When printing, the thermal paper passes through between the heating sheet 31 and the rubber roller assembly 2 for output. The V-shaped spring sheet 4 abuts against the frame 1 and the fixed bracket 32 ​​respectively, thereby providing a flexible activity space for the heating sheet 31 to work and ensuring the stability of the paper feeding of the printer.

[0060] like Figure 6 and Figure 7 As shown, in addition to the features of the above embodiment, this embodiment further defines that: the fixed bracket 32 ​​is located between the first side plate 12 and the second side plate 13, and the two sides of the fixed bracket 32 ​​are respectively formed with a clamping protrusion 321, and the first side plate 12 and the second side plate 13 are respectively provided with a notch 105, and the buckle extends into the adjacent notch 105. Through the connection and cooperation between the clamping protrusion 321 and the notch 105, the fixed bracket 32 ​​can be positioned and installed on the frame 1, and at the same time, the fixed bracket 32 ​​is further positioned under the contact of the V-shaped spring sheet 4, thereby ensuring that the heating sheet 31 can effectively cooperate with the rubber roller assembly 2 for printing, and also has a certain elastic activity space.

[0061] In addition to the features of the above-mentioned embodiment, the present embodiment further defines that: the V-shaped spring piece 4 and the frame 1 are both made of metal materials. By arranging the V-shaped spring piece 4 between the heating component 3 and the frame 1, the V-shaped spring piece 4 is tightly connected to the heating component 3 and the frame 1 respectively, and the V-shaped spring piece 4 and the fixing bracket 32 ​​are both made of metal materials, so that the heat generated by the operation of the heating component 3 can be quickly transferred to the frame 1 through the V-shaped spring piece 4, and heat is exchanged with the outside air through the frame 1, thereby allowing the heat in the heating component 3 and the thermal print head to be quickly dissipated, which is beneficial to improving the stability and service life of the components such as the heating component 3 in the thermal print head.

[0062] like Figure 1 and Figure 6 As shown, in addition to the features of the above embodiment, this embodiment is further defined as follows: it also includes a driving assembly 5, the driving assembly 5 includes a motor 51 and a gear set 52, the motor 51 and the gear set 52 are arranged on the frame 1, the input end of the gear set 52 is drivingly connected to the output shaft of the motor 51, and the output end of the gear set 52 is drivingly connected to the rubber roller assembly 2. Further, the motor 51 is a stepping motor.

[0063] like Figure 1 and Figure 3 As shown, in addition to the features of the above embodiments, this embodiment is further defined as: also including a flat cable 6 , the flat cable 6 is electrically connected to the heating component and / or the motor 51 .

[0064] like Figure 1 and Figure 3 As shown, in addition to the features of the above embodiment, this embodiment further defines: it also includes a clamping spring 7, which is arranged on the side wall of the frame 1, and the side wall of the frame 1 is provided with an axial hole 106, one end of the rubber roller assembly 2 is inserted into the axial hole 106, and the opposite sides of the rubber roller assembly 2 are respectively against the clamping spring 7 and the side wall of the axial hole 106. By adopting the above structure, the clamping spring 7 and the side wall of the axial hole 106 cooperate to clamp and fix one end of the rubber roller assembly 2 in the frame 1, and when disassembling, it is only necessary to pull the clamping spring to make the clamping spring elastically deformed to easily disassemble the rubber roller assembly 2, which is convenient for disassembly and assembly.

[0065] A second aspect of the present application provides a printer.

[0066] This embodiment discloses a printer, including: a printer body; the above-mentioned thermal print head, which is arranged on the printer body. The printer provided in the second aspect of the present application optimizes the spring connecting the frame 1 and the heating component 3 by adopting any of the above-mentioned thermal print heads, and adopts a V-shaped spring piece 4, which changes the point contact to the surface contact mode compared to traditional elastic parts such as cylindrical coil springs, thereby increasing the connection area, making the force application more stable, and promoting the heat dissipation of the thermal print head to a certain extent. At the same time, the V-shaped spring piece 4 is more convenient for the installer to extrude and deform for installation, and the connection is more convenient and reliable, which is conducive to improving production efficiency.

[0067] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0068] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A thermal print head, characterized in that: include: Rack (1); A rubber roller assembly (2), wherein the rubber roller assembly (2) is rotatably arranged on the frame (1); A heating assembly (3), wherein the heating assembly (3) is arranged on the frame (1), and the rubber roller assembly (2) and the heating assembly (3) are arranged opposite to each other and form a paper feeding passage for paper to pass through for printing; A V-shaped spring piece (4), wherein the V-shaped spring piece (4) is detachably arranged on the frame (1), the opening (401) of the V-shaped spring piece (4) is arranged to face upward, one end of the V-shaped spring piece (4) abuts against a side of the heating component (3) away from the rubber roller component (2), and the other end of the V-shaped spring piece (4) abuts against the frame (1).

2. The thermal print head according to claim 1, characterized in that: The V-shaped spring sheet (4) comprises a connecting portion (41), a first elastic wall (42) and a second elastic wall (43); the first elastic wall (42) is connected to the second elastic wall (43) via the connecting portion (41); the first elastic wall (42) and the second elastic wall (43) are arranged opposite to each other; the free end of the first elastic wall (42) and the free end of the second elastic wall (43) are far away from each other; the first elastic wall (42) is adapted to be installed on the frame (1); and the second elastic wall (43) abuts against a side of the heating component (3) away from the rubber roller component (2).

3. The thermal print head according to claim 2, characterized in that: One of the first elastic wall (42) and the frame (1) is provided with a positioning column (111), and the other of the first elastic wall (42) and the frame (1) is provided with a positioning hole (402) that is snap-fitted with the positioning column (111), and the positioning column (111) is snap-fitted in the positioning hole (402).

4. The thermal print head according to claim 3, characterized in that: The frame (1) is formed with the positioning column (111), and a chamfer or rounding is formed on one side edge of the positioning column (111) close to the heating component (3); and / or The number of the positioning posts (111) is three, the number of the positioning holes (402) is consistent with the number of the positioning posts (111), and the three positioning posts (111) are arranged in an inverted triangular shape.

5. The thermal print head according to claim 2, characterized in that: The V-shaped spring sheet (4) further comprises a shielding portion (44), the shielding portion (44) being arranged on a free end of the first elastic wall (42) or the second elastic wall (43), the shielding portion (44) being located above the opening (401) of the V-shaped spring so that the opening (401) is shielded; and / or The width of the second elastic wall (43) increases in a direction away from the connecting portion (41).

6. The thermal print head according to claim 2, characterized in that: The frame (1) comprises a connecting plate (11), a first side plate (12) and a second side plate (13); the first side plate (12) and the second side plate (13) are arranged opposite to each other; the first side plate (12) and the second side plate (13) are connected to each other via the connecting plate (11); two ends of the heating component (3) are respectively connected to the first side plate (12) and the second side plate (13); the V-shaped spring sheet (4) is located between the connecting plate (11) and the heating component (3); and the first elastic wall (42) is adapted to be mounted on the connecting plate (11).

7. The thermal print head according to claim 6, characterized in that: The connecting plate (11) is provided with a through hole (101), and the through hole (101) is arranged opposite to the first elastic wall (42); and / or The connecting plate (11) is provided with a limiting groove (102), and the first elastic wall (42) is adapted to be installed in the limiting groove (102); and / or The first side plate (12), the connecting plate (11), the second side plate (13) and the heating assembly (3) enclose a mounting cavity (103), the V-shaped spring sheet (4) is arranged in the mounting cavity (103), the connecting plate (11) is provided with a heat dissipation hole (104), and the heat dissipation hole (104) is connected to the mounting cavity (103).

8. The thermal print head according to claim 1, characterized in that: The heating assembly (3) comprises a heating sheet (31) and a fixed bracket (32), the fixed bracket (32) being arranged on the frame (1), the heating sheet (31) being arranged on the fixed bracket (32), the heating sheet (31) and the rubber roller assembly (2) being arranged opposite to each other and forming the paper feeding channel therebetween, and the end of the V-shaped spring sheet (4) away from the frame (1) abuts against a side of the fixed bracket (32) away from the heating sheet (31); and / or The V-shaped spring piece (4) and the frame (1) are both made of metal material.

9. The thermal print head according to any one of claims 1 to 8, characterized in that: The machine also comprises a driving assembly (5), wherein the driving assembly (5) comprises a motor (51) and a gear set (52), wherein the motor (51) and the gear set (52) are arranged on the frame (1), wherein the input end of the gear set (52) is drivingly connected to the output shaft of the motor (51), and the output end of the gear set (52) is drivingly connected to the rubber roller assembly (2); and / or It also includes a retaining spring (7), which is arranged on the side wall of the frame (1), and the side wall of the frame (1) is provided with an axial hole (106), one end of the rubber roller assembly (2) is inserted into the axial hole (106), and the opposite sides of the rubber roller assembly (2) are respectively against the retaining spring (7) and the side wall of the axial hole (106).

10. A printer, characterized in that: include: Printer body; The thermal print head according to any one of claims 1 to 9, wherein the thermal print head is disposed on the printer body.

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