Printer

Abstract

This utility model discloses a printer, including a main body, the main body including a hook portion; a cover assembly, the cover assembly being rotatably connected to the main body, the cover assembly being openable and closed relative to the main body, the cover assembly being limited and locked by the hook portion when closed; and an unlocking assembly, the unlocking assembly being linked to the hook portion, the unlocking assembly being configured to unlock the cover assembly; the unlocking assembly including a force-receiving member and a force-transmitting member, the force-receiving member abutting against the force-transmitting member, the force-receiving member being configured to receive an unlocking force, the unlocking force pushing the hook portion through the force-transmitting member, wherein the unlocking force is vertically downward along the height direction of the printer. This utility model has the advantages of simple structure, convenient unlocking of the cover assembly, and easy assembly of the hinge shaft.

Description

Technical Field

[0001] This utility model belongs to the field of printing, specifically relating to a printer. Background Technology

[0002] Thermal printers use a printhead with a heating element to heat a printing medium containing thermal material to form the desired text or pattern. A typical thermal printer has a main body containing a rubber roller and a drive mechanism that rotates the roller. The rotation of the roller moves the printing medium, allowing the printing process to continue. Because paper needs to be changed, the printer cover needs to be opened frequently, replaced, and then closed again, ensuring the thermal sheet is aligned with the rubber roller. Commercial desktop thermal printers, being larger, have more space for structural arrangement. Portable handheld thermal printers, being smaller (about the size of a palm), require additional components beyond the aforementioned elements, including locking mechanisms for stable lid closure. Therefore, the structural layout of miniature thermal printers is particularly important, and optimization of the lid-opening structure is necessary to improve the user experience. Summary of the Invention

[0003] In view of the problems existing in the prior art, the main purpose of this utility model is to provide a printer with a simple structure that can accurately unlock the limit of the rubber roller.

[0004] To achieve the aforementioned main objectives, this utility model provides a printer, comprising:

[0005] The main body includes a hook portion;

[0006] A cover assembly is rotatably connected to the main body, and the cover assembly can be opened and closed relative to the main body. When the cover assembly is closed, it is limited and locked by the hook portion.

[0007] An unlocking component is provided in conjunction with the hook portion, and the unlocking component is configured to unlock the cover component;

[0008] The unlocking component includes a force-receiving component and a force-transmitting component. The force-receiving component abuts against the force-transmitting component. The force-receiving component is configured to receive an unlocking force. The unlocking force pushes the hook portion through the force-transmitting component. The unlocking force is vertically downward along the height direction of the printer.

[0009] Furthermore, the main body includes a middle frame and a printing component, the middle frame being configured to support the printing component.

[0010] Furthermore, the printing assembly includes a mounting frame, a support plate, a rotating shaft, a thermal sheet, and an elastic support member. The two ends of the rotating shaft are fixedly connected to the middle frame. The mounting frame and the support plate are rotatably mounted on the middle frame via the rotating shaft. The thermal sheet is fixed to one side of the support plate, and the other side of the support plate is connected to the mounting frame via the elastic support member.

[0011] Furthermore, the middle frame is provided with a storage compartment that can accommodate at least a portion of the unlocking components, wherein,

[0012] One end of the force transmission component is hinged to the interior of the storage chamber, and the other end abuts against the mounting frame;

[0013] The bottom of the force-bearing component is provided with an arc-shaped part, which abuts against the upper surface of the force-transmitting component.

[0014] Furthermore, the mounting bracket includes:

[0015] A receiving part abuts against the force transmission member, and the receiving part is configured to receive the force of the unlocking component, thereby driving the mounting bracket to rotate around the pivot.

[0016] Furthermore, the cover assembly includes a rubber roller assembly, which includes a roller body and a rubber roller shaft disposed inside the roller body.

[0017] Furthermore, the mounting bracket includes:

[0018] A latch portion is configured to lock the rubber roller assembly when the cover assembly is closed.

[0019] To achieve the aforementioned main objectives, this utility model provides another printer, comprising:

[0020] The main body includes a hook portion;

[0021] A cover assembly is rotatably connected to the main body, and the cover assembly can be opened and closed relative to the main body. When the cover assembly is closed, it is limited and locked by the hook portion.

[0022] An unlocking component is provided in conjunction with the hook portion, and the unlocking component is configured to unlock the cover component;

[0023] The main body is characterized by comprising an upper housing, wherein the cover assembly is hingedly mounted on the upper housing, and the hinge positions of the cover assembly and the upper housing are respectively provided with opposing hinge shaft mounting holes. The cover assembly and the upper housing are connected by hinge shafts provided in the hinge shaft mounting holes. The cover assembly includes a detachable cover plate, and the cover plate has protrusions on both sides. When the cover plate is mounted on the cover assembly, the protrusions are located inside the hinge shaft mounting holes.

[0024] Furthermore, the protrusion is provided on a connecting arm spaced apart from the cover plate body, and the connecting arm is configured to elastically deform when the cover plate is installed on the cover assembly.

[0025] Furthermore, the cover assembly also includes a mounting groove in which the cover plate is installed.

[0026] As can be seen from the above solutions, by linking the unlocking component with the hook part, the locking state of the hook part to the rubber roller shaft can be controlled by the unlocking component, making it easier to control the locking and unlocking of the main body to the cover component. This simplifies the structure of the thermal printer, makes the hinge easy to install, and reduces assembly difficulty.

[0027] To more clearly illustrate the above-mentioned objectives, technical solutions, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the printer structure of this utility model;

[0029] Figure 2 This is a schematic diagram of the printing component in this utility model;

[0030] Figure 3 This is a schematic diagram of the printing component in this utility model;

[0031] Figure 4 This is an exploded view of the unlocking component in this utility model;

[0032] Figure 5 This is a top view of the printing component in this utility model;

[0033] Figure 6 yes Figure 5 A cross-sectional view along the AA direction;

[0034] Figure 7 This is a structural schematic diagram of the component of this utility model;

[0035] Figure 8 This is an exploded view of the structure of the cover component in this utility model. Detailed Implementation

[0036] Many specific details are set forth in the following description to provide a full understanding of the present invention. However, it will be readily apparent to those skilled in the art that the present invention may be implemented in other ways different from those described herein. Therefore, other possible implementations that can be obtained by those skilled in the art based on the embodiments described herein are all within the scope of protection of this application.

[0037] The specific structure of the embodiments of this utility model is described in detail below with reference to the accompanying drawings. It is understood that the embodiments of this utility model include, but are not limited to, the structures shown in the drawings, and those skilled in the art can make corresponding adjustments and improvements to the structure according to actual conditions.

[0038] like Figure 1 As shown, the printer of this utility model includes a main body and a cover assembly 111. The cover assembly 111 is hinged to the main body and can be opened and closed relative to the main body. When the cover assembly 111 is in the closed position, there is a paper outlet between the cover assembly 111 and the main body, from which the printed thermal paper or other printing media is discharged. The paper outlet is provided with a cutter for cutting the printing media. The main body includes an upper housing 101 and a lower housing (not shown) connected to the upper housing 101. Inside the main body, there is a paper tray 121 for containing printing media, a printing assembly 132, and a middle frame 131 for fixing the printing assembly 132.

[0039] like Figures 2-6 As shown, the cover assembly 111 includes a rubber roller assembly 112, which includes a roller body 1121 and a rubber roller shaft 1122 disposed inside the roller body 1121. The two ends of the rubber roller shaft 1122 extend out of the two ends of the roller body 1121, and bushings 1123 are provided at both ends of the rubber roller shaft 1122. When the cover assembly 111 is closed, the rubber roller assembly 112 approaches the printing assembly 132. The printing assembly 132 includes a mounting frame 1321, a support plate 1322, and a rotating shaft 1323. The mounting frame 1321 is mounted on the middle frame 131. The support plate 1322 is rotatably connected to the mounting frame 1321 via the rotating shaft 1323. An elastic support member is provided between the support plate 1322 and the mounting frame 1321. A thermal sheet 1326 for thermal printing of the printing medium is fixedly provided on the mounting frame 1321. The mounting frame 1321 includes a hook portion 1325. When the cover assembly 111 is in the closed position, the printing medium is pressed onto the thermal sheet 1326 by the rubber roller assembly 112. At the same time, both ends of the rubber roller assembly 112 are locked and fixed by the hook portion 1325. With this configuration, when the cover assembly 111 is in the closed position, the hook portion 1325 of the mounting bracket 1321 directly engages and fixes the rubber roller shaft 1122 of the rubber roller assembly 112 or the bushings 1123 at both ends of the rubber roller shaft 1122, thereby locking the cover assembly 111 in the main body.

[0040] The upper housing 101 includes a button position 102 configured to accommodate an unlock button. The button position 102 is located on the top surface of the upper housing 101. An unlocking assembly is provided on the middle frame 131 corresponding to the button position 102. The unlocking assembly includes a force-bearing member 133 coupled with the unlock button, a force-transmitting member 134 disposed between the force-bearing member 133 and the mounting bracket 1321, and a storage chamber 1311. The force-bearing member 133 includes an arc-shaped portion 1332 and a clearance groove 1333. The force-transmitting member 134 includes an abutment portion 1341 and a hinge portion 1342. The storage chamber 1311 is configured to accommodate the force-bearing member 133 and the force-transmitting member 134. The storage chamber 1311 can partially accommodate the force-bearing member 133 and the force-transmitting member 134, or it can accommodate all of the force-bearing member 133 and the force-transmitting member 134. The inner side of the storage chamber 1311... A hinge seat 1314 is provided at the bottom. The hinge portion 1342 of the force transmission member 134 is connected to the hinge seat 1314. An opening 1315 is provided on one side wall of the storage chamber 1311 near the printing assembly 132. The abutting portion 1341 of the force transmission member 134 passes through the opening 1315 and abuts against the receiving portion 1324 of the printing assembly 132. The arc-shaped portion 1332 of the force-receiving member 133 protrudes towards one side of the storage chamber 1311. Part 1332 abuts against the force transmission member 134 near the abutment part 1341. When the unlock button is pressed down by the user, the force receiving member 133 is configured to receive the unlocking force of the unlock button and move downward to push the force transmission member 134 to rotate. The force transmission member 134 pushes the printing assembly 132 to rotate. The mounting bracket 1321 rotates around the rotating shaft 1323, thereby releasing the two ends of the rubber roller assembly 112 from the locked state by the hook part 1325. The unlocking force is vertically downward along the height direction of the printer. At the same time, when the rubber roller assembly 112 presses against the thermal sheet 1326 of the support plate 1322, the elastic support is in a compressed state. When the two ends of the rubber roller assembly 112 are released from the locked state by the hook part 1325, the elastic support pushes the support plate 1322 to push the rubber roller assembly 112 out of the locked position of the hook part 1325. This configuration ensures that when the rubber roller assembly 112 is released from its locked position, it remains in the unlocked state even after the user releases the unlock button.

[0041] The cover assembly can be opened by pressing down the unlock button, which is convenient to operate (especially convenient for one-handed operation). Since the unlock button is located at button position 102 and is roughly on the same plane as the top surface of the upper housing 101, the printer does not have a button that protrudes significantly from the printer housing wall, making the machine simple and beautiful.

[0042] Furthermore, in order to limit the position of the force transmission member 134 and the storage chamber 1311, the storage chamber 1311 is provided with a limiting groove 1313 and a limiting groove 1312. The force-bearing member 133 includes a limiting part 1331 and a limiting part 1334. The limiting part 1331 is a protrusion extending horizontally from the side of the force transmission member 134. The limiting groove 1313 is an opening corresponding to the limiting part 1331. The limiting groove 1313 is constructed as a limiting part 1314. 31. Within the vertical displacement range, the second limiting part 1334 is a hook structure provided from the side of the force-transmitting member 134, and the second limiting groove 1312 is an opening corresponding to the second limiting part 1334. The second limiting part 1334 is disposed in the second limiting groove 1312, which is configured to limit the vertical displacement range of the second limiting part 1334. The hook structure of the second limiting part 1334 can engage with the upper edge of the opening to limit the force-bearing member 133. Through the above limiting structure, the unlocking member structure is compact, the overall structure has no redundant parts, saving space, and also making the printing device of this application compact.

[0043] like Figure 7 , Figure 8 As shown, the cover assembly 111 includes a cover plate 113 and a mounting groove 1112. The cover plate 113 is disposed in the mounting groove 1112. The connection position between the cover assembly 111 and the upper housing 101 is provided with two opposing hinge mounting holes 1111. The cover assembly 111 and the upper housing 101 are connected by two hinges (not shown in the figure) mounted in the hinge mounting holes 1111. The cover plate 113 includes two protrusions 1131, which are respectively provided corresponding to the two hinge mounting holes 1111 of the cover assembly 111. When the cover plate 113 is installed in the cover assembly 111, the protrusions 1131 are disposed inside the hinge mounting holes and extend into the hinge mounting holes 1111 to abut or block the hinges. In the prior art, a hinge shaft is usually directly assembled into the hinge shaft mounting hole 1111 between the cover assembly 111 and the upper housing 101. Since the hinge shaft part is small in size, it is difficult to assemble it accurately, and the assembly is difficult. This solution assembles two hinge shafts into the hinge shaft mounting hole 1111 between the cover assembly 111 and the upper housing 101 respectively, and then seals the hinge shaft mounting hole 1111 with a cover plate 113. The assembly process is simpler and it is easier to disassemble during subsequent disassembly and repair.

[0044] Furthermore, the protrusion 1131 is provided on the connecting arm spaced apart from both sides of the main body of the cover plate 113. The connecting arm is thin and easy to undergo elastic deformation, which facilitates installation.

[0045] Furthermore, in order to make the cover plate 113 more stable in fixing to the cover assembly 111, a snap-fit ​​component is provided between the cover assembly 111 and the cover plate 113 for mutual snap-fit. The snap-fit ​​component includes a snap-fit ​​member 1113 disposed in the cover assembly 111 and a snap-fit ​​position 1132 of the cover plate 113 cooperating with the snap-fit ​​member 1113. When the cover plate 113 is disposed in the mounting groove 1112 by snap-fit ​​fixing, the snap-fit ​​member 1113 is connected to the snap-fit ​​position 1132, thereby fixing the cover plate 113. In another embodiment, the snap-fit ​​member 1113 and the snap-fit ​​position 1132 can also be interchanged to achieve the same effect.

[0046] While the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the scope of the invention. Any person skilled in the art may make modifications without departing from the scope of the invention; all variations or modifications made in accordance with the present invention shall be covered by the protection scope of the present invention.

Claims

1. Printer, including: The main body includes a hook portion; A cover assembly is rotatably connected to the main body, and the cover assembly can be opened and closed relative to the main body. When the cover assembly is closed, it is limited and locked by the hook portion. An unlocking component is provided in conjunction with the hook portion, and the unlocking component is configured to unlock the cover component; The unlocking component is characterized in that it includes a force-receiving component and a force-transmitting component, the force-receiving component abutting against the force-transmitting component, the force-receiving component being configured to receive an unlocking force, the unlocking force pushing the hook portion through the force-transmitting component, wherein the unlocking force is vertically downward along the height direction of the printer.

2. The printer according to claim 1, characterized in that, The main body includes a middle frame and a printing component, the middle frame being configured to support the printing component.

3. The printer according to claim 2, characterized in that, The printing assembly includes a mounting frame, a support plate, a rotating shaft, a thermal sheet, and an elastic support member. The two ends of the rotating shaft are fixedly connected to the middle frame. The mounting frame and the support plate are rotatably mounted on the middle frame via the rotating shaft. The thermal sheet is fixed to one side of the support plate, and the other side of the support plate is connected to the mounting frame via the elastic support member.

4. The printer according to claim 3, characterized in that, The middle frame is provided with a storage compartment that can accommodate at least a portion of the unlocking components, wherein, One end of the force transmission component is hinged to the interior of the storage chamber, and the other end abuts against the mounting frame; The bottom of the force-bearing component is provided with an arc-shaped part, which abuts against the upper surface of the force-transmitting component.

5. The printer according to claim 3, characterized in that, The mounting bracket includes: A receiving part abuts against the force transmission member, and the receiving part is configured to receive the force of the unlocking component, thereby driving the mounting bracket to rotate around the pivot.

6. The printer according to claim 3, characterized in that, The cover assembly includes a rubber roller assembly, which includes a roller body and a rubber roller shaft disposed inside the roller body.

7. The printer according to claim 6, characterized in that, The mounting bracket includes: A latch portion is configured to lock the rubber roller assembly when the cover assembly is closed.

8. Printer, including: The main body includes a hook portion; A cover assembly is rotatably connected to the main body, and the cover assembly can be opened and closed relative to the main body. When the cover assembly is closed, it is limited and locked by the hook portion. An unlocking component is provided in conjunction with the hook portion, and the unlocking component is configured to unlock the cover component; The main body is characterized by comprising an upper housing, wherein the cover assembly is hingedly mounted on the upper housing, and the hinge positions of the cover assembly and the upper housing are respectively provided with opposing hinge shaft mounting holes. The cover assembly and the upper housing are connected by hinge shafts provided in the hinge shaft mounting holes. The cover assembly includes a detachable cover plate, and the cover plate has protrusions on both sides. When the cover plate is mounted on the cover assembly, the protrusions are located inside the hinge shaft mounting holes.

9. The printer according to claim 8, characterized in that, The protrusion is provided on a connecting arm spaced apart from the cover plate body, and the connecting arm is configured to elastically deform when the cover plate is installed on the cover assembly.

10. The printer according to claim 8, characterized in that, The cover assembly also includes a mounting groove in which the cover plate is installed.

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