Rotation reset device

Abstract

The present invention proposes a rotation and resetting device with reasonable structural design, simple operation and labor-saving rotation and resetting. The device comprises a shell and a transmission pressure plate. The transmission pressure plate can be rotatably arranged on the shell. The shell is provided with a first driving device for driving the transmission pressure plate to rotate and a first resetting device for driving the transmission pressure plate to reset.

Description

Technical Field

[0001] The present invention relates to the technical field of printers, and in particular to a rotation resetting device. Background Art

[0002] With the improvement of living standards, people are pursuing a higher quality of life and convenience of life. Correspondingly, label printers that can improve the quality of life and make life more convenient have appeared on the market. This label printer can not only print text, but also print graphics and photos. In life, it can be used to print the name and shelf life of items, helping users to find items more quickly and reminding the shelf life of items so that users can use them up within the shelf life to avoid the items from being expired due to long-term non-use. In learning, it can be used to print students' wrong questions and help students create wrong question collections. It can quickly record wrong questions and reduce the time students spend copying wrong question collections, so as to gain more study time for students and improve learning efficiency.

[0003] The existing label printer mainly includes a housing, a paper compartment and a battery compartment and a paper outlet channel provided on the housing, a roller arranged on one side of the paper outlet channel for driving the paper roll to outlet paper, a heating component arranged on the other side of the paper outlet channel for heating the thermal paper, and a blade arranged on the paper outlet channel for cutting the printed thermal paper. When the printer is in use, the heating component will press against the roller to clamp the thermal paper between the heating component and the roller, and drive the thermal paper to outlet while heating the printed content. When replacing the paper roll, the heating component needs to be spaced apart from the roller, so that there is a gap between the heating component and the roller for the free end of the paper roll to pass through between the heating component and the roller. After the free end of the paper roll is placed, the heating component is driven to move toward the roller to clamp the thermal paper. Therefore, a driving device for driving the heating component to operate needs to be provided in the printer. Summary of the invention

[0004] Therefore, in view of the above problems, the present invention proposes a rotation and reset device which has a reasonable structural design, is easy to operate and can be rotated and reset with little effort.

[0005] In order to solve the above technical problems, the solution adopted by the present invention is: a rotational resetting device, including a shell, including a transmission pressure plate, the transmission pressure plate can be rotatably arranged on the shell, and the shell is provided with a first driving device for driving the transmission pressure plate to rotate and a first resetting device for driving the transmission pressure plate to reset.

[0006] A further improvement is that an auxiliary labor-saving device is provided on the housing for assisting the first driving device to drive the transmission pressure plate to rotate with less effort and assisting the first resetting device to drive the transmission pressure plate to reset with less effort.

[0007] A further improvement is that: the first driving device includes a rotating block, the middle part of the rotating block is rotatably arranged on the shell, and the lower end of the rotating block is connected to one end of the transmission pressure plate.

[0008] A further improvement is that: the first reset device includes a first elastic reset member and a second elastic reset member, the two ends of the first elastic reset member are respectively fixedly arranged on the lower end of the rotating block and one end of the transmission pressure plate, one end of the second elastic reset member is arranged on the free end of the transmission pressure plate, and the other end is arranged on the shell on the other side of the transmission pressure plate relative to the first elastic reset member.

[0009] Further improvement is: the auxiliary labor-saving device includes a first limit plate and a second limit plate, the first limit plate and the second limit plate are respectively arranged on the shells on both sides of the transmission pressure plate, the transmission pressure plate can be slidably and rotatably arranged between the first limit plate and the second limit plate, a first rotating protrusion is arranged on the side of the first limit plate close to the rotating block, and a second rotating protrusion is arranged on the side of the second limit plate away from the rotating block, and the transmission pressure plate is provided with a first rotating groove and a second rotating groove respectively cooperating with the first rotating protrusion and the second rotating protrusion.

[0010] A further improvement is that a third elastic reset member is arranged between the transmission pressure plate on one side close to the rotating block and the second limit plate, one end of the third elastic reset member is arranged on the transmission pressure plate, and the other end is arranged on the second limit plate.

[0011] A further improvement is that: the first elastic return member is a first spring, and the second elastic return member is a second spring.

[0012] A further improvement is that: the third elastic return member is a third spring.

[0013] By adopting the above technical solution, the beneficial effect of the present invention is that the transmission pressure plate in the present invention is slidable and rotatable, and the rotating block, the first spring, the second spring and the third spring drive the transmission pressure plate to slide and rotate between the first limit plate and the second limit plate. The transmission pressure plate can respectively make the second rotating groove on the transmission pressure plate cooperate with the second rotating protrusion on the second limit plate and make the first rotating groove on the transmission pressure plate cooperate with the first rotating protrusion on the first limit plate through sliding. The first rotating protrusion is arranged on the transmission pressure plate close to the rotating block, and the second rotating protrusion is arranged on the transmission pressure plate close to the heating component. When the third spring pushes the transmission pressure plate to move toward the first limit plate, the first rotating groove cooperates with the first rotating protrusion. At this time, the second spring pushes the transmission pressure plate to drive the heating component and the roller to slowly move away from each other. At this time, a labor-saving lever is formed between the second spring, the transmission pressure plate and the first rotating protrusion. At the same time, the elastic potential energy of the third spring also helps the transmission pressure plate to rotate in the direction away from the roller. When the first spring pulls the transmission pressure plate to slide toward the second limit plate, the second rotating groove cooperates with the second rotating protrusion. At this time, under the further pulling of the first spring, the transmission pressure plate drives the heating component and the roller to slowly approach each other. At this time, a labor-saving lever is formed between the first spring, the transmission pressure plate and the second rotating protrusion; the position of the rotation center of the transmission pressure plate is adjusted by sliding the transmission pressure plate, so that the driving rod can form a labor-saving lever whether it drives the heating component close to the roller or drives the heating component away from the roller. Through the sliding of the transmission pressure plate, the transmission pressure plate can form different lever structures between the first limit plate or the second limit plate, reduce the working strength of the first spring, the second spring and the third spring, and extend the service life of the first spring, the second spring and the third spring. At the same time, this structure is arranged inside the printer. Generally, when it is damaged, it means that the spring fails. Extending the service life of the spring also extends the service life of the printer. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic structural diagram of a mini label printer described in an embodiment of the present invention.

[0015] Figure 2 It is a schematic structural diagram of a mini label printer described in an embodiment of the present invention.

[0016] Figure 3 It is a top view of the internal structure of a mini label printer described in an embodiment of the present invention.

[0017] Figure 4 It is a three-dimensional diagram of the internal structure of a mini label printer described in an embodiment of the present invention.

[0018] Figure 5 It is a schematic diagram of the structure of a rotation reset device according to an embodiment of the present invention.

[0019] Figure 6 It is a schematic structural diagram of a rotational resetting device according to an embodiment of the present invention.

[0020] Figure 7 It is a schematic diagram of the structure of a transmission pressure plate in a rotation resetting device according to an embodiment of the present invention.

[0021] Figure 8 It is a schematic structural diagram of a second driving mechanism in a mini label printer described in an embodiment of the present invention. DETAILED DESCRIPTION

[0022] The present invention will now be further described with reference to the accompanying drawings and specific embodiments.

[0023] refer to Figures 1 to 8The embodiment of the present invention discloses an embodiment of a rotation reset device applied to a mini label printer, including an upper shell 10 and a lower shell 11. The upper end surface of the upper shell is provided with a groove 44 downwardly, and a mounting plate 45 for displaying a pattern is arranged in the groove. The mounting plate 45 may have a pattern itself, or the mounting plate may be transparent and present a pattern on the bottom surface of the groove. The upper shell 10 may be detachably arranged on the lower shell 11. The lower end of the upper shell 10 is rotatably engaged with a slot 12 provided on the upper end of the lower shell 11 through a card block. A paper outlet 13 is provided on the side wall of the lower shell 11. A middle shell 14 for installing a battery and a paper roll is arranged in the lower shell 11. The middle shell 14 is provided with a paper bin 15 for placing paper rolls and a battery bin 16 for installing batteries in parallel. The paper bin 15 is provided with a mounting post 17 for mounting the paper roll sleeve. The battery bin 16 and the paper bin 15 are provided in parallel so that the positions of the battery bin 16 and the paper bin 15 can be more compact, and at the same time, the space originally reserved at the bottom for providing the battery bin 16 is omitted, thereby effectively reducing the overall thickness of the printer. The cavity of the battery bin 16 is provided with a depth that can accommodate two groups of batteries installed in the upper and lower layers, and a group of batteries is two. The battery bin 16 is provided with a connecting groove 18 on the bin wall on one side of the paper bin 15, which is connected to the paper bin 15 and is convenient for disassembly and assembly of the batteries. The depth of the connecting groove 18 is the same as that of the paper bin 15. The paper bin 15 and the battery bin 16 are of equal depth. After the communicating groove 18 is opened, when the paper roll is at the maximum diameter, the outermost side of the paper roll can be inserted into the communicating groove 18. The space of the communicating groove 18 can be used to open the paper bin 15, so that the structure of the printer is more compact, the diameter of the printer is effectively reduced, and the body size of the printer is reduced. After the paper roll is removed, the user's fingers can be inserted into the paper bin 15 and pass through the communicating groove 18 to pull out the battery installed in the battery bin 16, which is convenient for removing the battery. A paper outlet channel 19 is opened on the middle shell 14 between the paper bin 15 and the paper outlet 13. The paper outlet channel 19 is connected to the paper outlet 13, and the two sides of the paper outlet channel 19 can be slidably provided with A heating component 20 for heating thermal paper is provided, and a roller 21 for driving the paper roll to discharge paper can be rotatably provided, and the roller 21 can be rotatably provided between the middle shell 14 and the lower shell 11, and the heating component is a semiconductor heating element (the semiconductor heating element described in this embodiment is a well-known product and can be directly purchased on the market for use, so the semiconductor heating element is not described in detail here.) The heating component 20 can be slidably provided between the middle shell 14 and the lower shell 11, and a blade 22 for cutting the printed thermal paper can be slidably provided on the paper discharge channel 19, and a blade 22 for driving the heating component 20 to slide and press or move away from the roller 21 is provided on the middle shell 14. Heating element drive mechanism , a second driving mechanism for driving the blade 22 to slide back and forth, and a third driving device for driving the roller 21 to roll.

[0024] The heating component driving mechanism includes a transmission pressure plate 23 for driving the heating component 20 to press against the roller 21 or to drive the heating component 20 away from the roller 21. The transmission pressure plate 23 is rotatably arranged on the bottom of the middle shell 14 of the printer. The middle shell 14 is provided with a first driving device for driving the transmission pressure plate 23 to drive the heating component 20 to press against the roller 21 and a first resetting device for driving the transmission pressure plate 23 to drive the heating component 20 away from the roller 21 for resetting. The middle shell is provided with an auxiliary labor-saving device for assisting the first driving device to labor-savingly drive the transmission pressure plate 23 to drive the heating component 20 to press against the roller and assisting the first resetting device to labor-savingly drive the transmission pressure plate 23 to drive the heating component 20 to resetting.

[0025] The first driving device includes a rotating block 25, the middle shell 14 passes through the through hole 24 opened on the upper and lower sides, the middle part of the rotating block 25 is rotatably arranged in the through hole 24 through a rotating shaft, and the lower end of the rotating block 25 is connected to one end of the transmission pressure plate 23. The first reset device includes a first elastic reset member and a second elastic reset member, the first elastic reset member is a first spring 26, and the second reset elastic reset member is a second spring 27, and the two ends of the first elastic reset member are respectively fixedly arranged on the lower end of the rotating block 25 and one end of the transmission pressure plate 23, and one end of the second elastic reset member is arranged on the end of the transmission pressure plate 23 close to the heating component 20, and the other end is fixedly arranged on the housing of the transmission pressure plate 23 on the other side of the first elastic reset member.

[0026] The auxiliary labor-saving device includes a first limit plate 28 and a second limit plate 29, which are respectively arranged on the shells on both sides of the transmission pressure plate 23, and the transmission pressure plate 23 can be slidably and rotatably arranged between the first limit plate 28 and the second limit plate 29. A first rotating protrusion 30 is arranged on the first limit plate 28 near the rotating block 25, and a second rotating protrusion 31 is arranged on the second limit plate 29 near the heating component 20. The transmission pressure plate 23 is provided with a first rotating groove 32 and a second rotating groove 33 respectively cooperating with the first rotating protrusion 30 and the second rotating protrusion 31, and a third elastic reset member is arranged between the side of the transmission pressure plate 23 near the rotating block 25 and the second limit plate 29, and the third elastic reset member is a third spring, one end of the third elastic reset member is arranged on the transmission pressure plate 23, and the other end is arranged on the second limit plate 29.

[0027] When the upper shell 10 is engaged with the lower shell 11, the inner end surface of the upper shell 10 fits with the upper end surface of the middle shell 14, which will squeeze the upper end of the rotating block 25 downward to force the rotating block 25 to rotate. The lower end of the rotating block 25 rotates and stretches the first spring 26 arranged thereon. The first spring 26 pulls the transmission pressure plate 23 to slide toward the second limit plate 29 first, and compresses the third spring 34. When the second rotating groove 33 on the transmission pressure plate 23 cooperates with the second rotating protrusion 31 on the second limit plate 29, the first spring 26 further pulls the transmission pressure plate 23 to rotate along the center of the second rotating protrusion 31 as the rotation center, driving the heating component 20 to move toward the roller 21 to press the thermal paper, and the transmission pressure plate 23 rotates while squeezing the second spring 27. When the upper shell 10 is opened, the rotating block 25 removes the external force, and the third spring 34 resets to push the transmission pressure plate 23 to slide toward the first limit plate 28, so that the first rotating groove 32 on the transmission pressure plate 23 cooperates with the first rotating protrusion 30 on the first limit plate 28, and then the second spring 27 and the third spring 34 further reset the transmission pressure plate 23 to rotate along the center of the first rotating protrusion 30 as the rotation center, driving the heating component 20 away from the roller 21, and at the same time, the first spring 26 resets to drive the rotating block 25 to reset.

[0028] The second driving mechanism includes a first slider 35 and a pressing block 38. The first slider can be slidably arranged on the lower shell body along a direction perpendicular to the paper output channel. A sliding protrusion 36 is fixedly arranged on the first slider 35. A slideway 37 matching with the sliding protrusion 36 is provided at the bottom of the lower shell body 11. The sliding protrusion 36 can be slidably arranged in the slideway 37. One end of the pressing block 38 can be slidably arranged on the first slider 35 through a slide groove. The blade is fixedly arranged on the first slider 35. The distance between the pressing block 38 and the paper output channel is smaller than the distance between the blade and the paper output channel. A first opening is provided on one side of the paper output channel for the pressing block 38 and the blade to pass through, and a second opening is provided on the other side of the paper output channel for the blade to pass through. The housing is provided with a second driving device for driving the first slider 35 and the blade to slide toward the paper outlet passage. A fourth elastic reset member for driving the first slider 35 to reset is provided between the first slider 35 and the paper outlet passage. The fourth elastic reset member is a fourth spring 9. One end of the fourth spring 9 is fixedly provided on the first slider 35. The other end of the fourth spring 9 can contact the side wall of the paper outlet passage to squeeze and store energy through the sliding of the first slider 35. A fifth elastic reset member for driving the clamping block 38 to reset is provided between the clamping block 38 and the first slider 35. The fifth elastic reset member is a fifth spring 91 (not shown in the figure). One end of the fifth spring 91 is fixedly provided on the first slider 35, and the other end is provided on the clamping block 38. The second driving device is a shear button slidably provided on the side wall of the lower housing. The first slider 35 is fixedly provided on the shear button.

[0029] The user manually presses the shear button 39, which pushes the first slider 35 to slide along the slide 37, and the first slider 35 drives the clamping block 38 and the blade 22 to move toward the paper outlet channel 19. As the first slider 35 slides, the other end of the fourth spring 9 abuts against the outer wall of the paper outlet channel. As the first slider 35 slides further, the fourth spring 9 is charged, and the first slider 35 drives the clamping block 38 and the blade to pass through the first opening on the paper outlet channel. The clamping block 38 squeezes the thermal paper against the wall on the other side of the paper outlet channel. The first slider 35 continues to slide to charge the fifth spring 91, and at the same time drives the blade to pass through the second opening on the paper outlet channel to cut the printed thermal paper. After cutting is completed, the user releases his hand, and the fourth spring 9 releases its elastic potential energy to drive the first slider 35 to drive the blade and the clamping block 38 to reset. At the same time, the fifth spring 91 releases its elastic potential energy to drive the clamping block 38 to reset, and the reset of the first slider 35 drives the shear button 39 to reset.

[0030] The third driving device includes a driving motor 40, the shell of the driving motor 40 is fixedly arranged on the middle shell 14, the first gear 1 is fixedly arranged on the rotating shaft of the driving motor 40, the second gear 2 is fixedly arranged on the roller, the middle shell 14 is provided with a third gear 3 meshing with the first gear 1, the fourth gear 4 is coaxially arranged on the lower end surface of the third gear 3, the fifth gear 5 is meshing with the fourth gear 4 on the middle shell 14, the sixth gear 6 is coaxially arranged on the upper end surface of the fifth gear 5, the seventh gear 7 meshing with the sixth gear 6 is arranged on the middle shell 14, the eighth gear 8 is coaxially arranged on the upper end surface of the seventh gear 7, and the second gear 2 meshes with the eighth gear 8 for transmission. The driving motor 40 drives the first gear 1 to rotate, the first gear 1 meshes and drives the third gear 3 to rotate, the third gear 3 rotates and drives the fourth gear 4 to rotate, the fourth gear 4 rotates and meshes and drives the fifth gear 5 to rotate, the fifth gear 5 rotates and drives the sixth gear 6 to rotate, the sixth gear 6 rotates and meshes and drives the seventh gear 7 to rotate, the seventh gear 7 rotates and drives the eighth gear 8 to rotate, and the eighth gear 8 rotates and meshes and drives the second gear 2 to rotate. By calculating and setting gear meshing transmissions of different sizes, the speed transmitted to the roller by the driving motor is reduced, and the torque of the roller 21 is increased, so that the roller rolls and drives the paper roll to discharge paper.

[0031] The lower shell 11 is provided with an electric control module 41 for controlling the heating of the heating component 20 and controlling the rotation of the driving motor 40 to drive the rotating shaft to print the corresponding content on the thermal paper. The electric control module 41 described in this embodiment is a well-known technology in the printer, and the improvement point of this case is not on the electric control module 41, so the electric control module 41 is not described in detail here. The battery pack, driving motor 40, and heating component 20 in the battery compartment 16 are all electrically connected to the electric control module 41. The lower shell 11 is provided with a power button 42 for controlling the power on or off of the electric control module 41 and a USB charging port 43 for charging the battery pack. The power button 42 and the USB charging port 43 are both electrically connected to the electric control module 41. A sensing plate 46 is downwardly disposed on the lower end surface of the transmission pressure plate, and the free end of the sensing plate 46 can extend into or out of the photoelectric sensing port of the photoelectric switch on the electronic control module 41 through the rotation of the transmission pressure plate. When the photoelectric sensor senses the sensing plate, the heating component and the roller are in a compressed state, and the printer can be controlled to print through the mobile phone software; when the photoelectric sensor does not sense the sensing plate, the heating component and the roller are in a non-compressed state, and the printer cannot be controlled to print through the mobile phone software. At the same time, the electronic control module of the printer will feed back an alarm signal to the mobile phone to remind the user that the heating component and the roller are in a non-compressed state.

[0032] A method for using a mini label printer: edit the printing content through the software on the mobile phone, click the power button 42 to turn on the present invention, and then transmit the edited data information to the electronic control module 41 by wireless transmission. The electronic control module 41 controls the heating component 20 and the roller 21 to print the corresponding content on the thermal paper. After the thermal paper is printed, click the cut button to cut the thermal paper.

[0033] The working principle of the driving mechanism of the heating component 20 of the label printer is as follows: when the driving rotating block 25 rotates, the rotating block 25 pulls the first spring 26 to pull the transmission pressure plate 23 to slide toward the second limiting plate 29, so that the second rotating groove 33 cooperates with the second rotating protrusion 31. Under the further pulling of the first spring 26, the transmission pressure plate 23 drives the heating component 20 and the roller to slowly approach each other. At this time, a labor-saving lever is formed between the first spring 26, the transmission pressure plate and the second rotating protrusion, and at the same time, the second spring 27 and the third spring 34 are squeezed to store energy. When the external force of the rotating block 25 is removed, the third spring 34 pushes the transmission pressure plate 23 to move toward the first limit plate 28, the first rotating groove 32 cooperates with the first rotating protrusion 30, and the second spring 27 pushes the transmission pressure plate 23 to drive the heating component 20 to slowly move away from the roller. At this time, the second spring 27, the transmission pressure plate 23 and the first rotating protrusion 30 form a labor-saving lever, and the elastic potential energy of the third spring 34 also helps the transmission pressure plate 23 to rotate away from the roller. The position of the rotation center of the transmission pressure plate 23 is adjusted by sliding the transmission pressure plate 23, so that the driving rod can form a labor-saving lever whether it drives the heating component 20 close to the roller or drives the heating component 20 away from the roller.

[0034] Based on the above technical solution, a group of batteries is at least one battery, and the group of batteries disclosed in the above embodiment can also be one, three or four batteries.

[0035] The basic principles, main features and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for illustrating the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which shall fall within the scope of the present invention to be protected. The scope of protection of the present invention shall be defined by the attached claims and their equivalents.

Claims

1. A rotation reset device, comprising a housing, characterized in that: It comprises a transmission pressure plate and a heating component, wherein the heating component is arranged on the transmission pressure plate, the transmission pressure plate is rotatably arranged on a housing, and the housing is provided with a first driving device for driving the transmission pressure plate to rotate and a first resetting device for driving the transmission pressure plate to reset; The first driving device comprises a rotating block, the middle part of which is rotatably arranged on the housing, and the lower end of the rotating block is connected to one end of the transmission pressure plate; The first reset device comprises a first elastic reset member and a second elastic reset member, wherein two ends of the first elastic reset member are respectively fixedly arranged on the lower end of the rotating block and one end of the transmission pressure plate, one end of the second elastic reset member is arranged on the free end of the transmission pressure plate, and the other end is arranged on the housing of the transmission pressure plate on the other side relative to the first elastic reset member; The housing is provided with an auxiliary labor-saving device for assisting the first driving device to labor-savingly drive the transmission pressure plate to rotate and assisting the first resetting device to labor-savingly drive the transmission pressure plate to reset; The auxiliary labor-saving device comprises a first limit plate and a second limit plate, the first limit plate and the second limit plate are respectively arranged on the housings on both sides of the transmission pressure plate, the transmission pressure plate can be slidably and rotatably arranged between the first limit plate and the second limit plate, a first rotating protrusion is arranged on the side of the first limit plate close to the rotating block, and a second rotating protrusion is arranged on the side of the second limit plate away from the rotating block, and a first rotating groove and a second rotating groove are respectively formed on the transmission pressure plate to cooperate with the first rotating protrusion and the second rotating protrusion; A third elastic reset member is arranged between the transmission pressure plate near the rotating block and the second limit plate. One end of the third elastic reset member is arranged on the transmission pressure plate, and the other end is arranged on the second limit plate.

2. The rotation reset device according to claim 1, characterized in that: The first elastic return member is a first spring, and the second elastic return member is a second spring.

3. The rotation reset device according to claim 1, characterized in that: The third elastic return member is a third spring.

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