Rotary uncovering structure of printer

Abstract

The utility model provides a rotary uncovering structure of a printer, which comprises a machine body and a turning cover, a first end of the turning cover is hinged with the machine body, a second end of the turning cover is provided with a rubber roller, and the machine body is provided with a machine core frame, a pull rod, an uncovering key and a locking piece; the pull rod is arranged on the machine core frame in a sliding mode in the first direction, and a first pulling part and a second pulling part are arranged at the two ends of the pull rod respectively; the uncovering key is rotatably connected with the machine core frame, one end of the uncovering key can abut against the first pulling part, and the uncovering key can drive the pull rod to move in the first direction; the locking piece is rotatably connected with the machine core frame, a first clamping part and a pulling matching part are arranged on the locking piece, the pulling matching part can abut against the second pulling part, and the pull rod can drive the locking piece to rotate, so that the first clamping part is detachably clamped with the rubber roller; according to the utility model, more than two labor-saving lever structures can be arranged, so that the cover can be opened easily.

Description

Technical Field

[0001] The utility model relates to the field of printers, and particularly to a rotary cover opening structure of a printer. Background Art

[0002] Generally, a locking groove is provided on one of the body and the flip cover of a thermal printer, and a locking mechanism is provided on the other. The locking mechanism includes an opening key and a locking hook linked to the opening key. The opening key is used to control the locking hook to engage with or disengage from the locking groove. When it is necessary to replace or add a roll of printing paper, the opening key is used to control the locking hook to disengage from the locking groove, so that the flip cover can be opened. When it is necessary to close the flip cover, the flip cover is closed on the body, and the locking hook is engaged with the locking groove, so as to realize the closing of the flip cover.

[0003] The opening key generally directly applies a force to the locking hook, causing the locking hook to disengage from the locking groove, so as to achieve the effect of opening the cover. Due to the opening key directly applying a force to the locking hook, the structural limitation can only set at most one labor-saving lever structure, and cannot achieve a good labor-saving effect. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a rotary cover opening structure of a printer that can set more than two labor-saving lever structures to easily open the cover.

[0005] To achieve the above purpose, the utility model provides a rotary cover opening structure of a printer, including a body and a flip cover. The first end of the flip cover is hinged to the body, and a rubber roller is provided at the second end of the flip cover. The following components are provided on the body: a movement frame, a pull rod, an opening key and a locking member. The pull rod is slidably arranged on the movement frame along a first direction, and a first pulling part and a second pulling part are provided on the pull rod. The opening key is rotatably connected to the movement frame, and one end of the opening key can abut against the first pulling part, and the opening key can drive the pull rod to move along the first direction. The locking member is rotatably connected to the movement frame, and a first clamping part and a pulling cooperation part are provided on the locking member. The pulling cooperation part can abut against the second pulling part, and the pull rod can drive the locking member to rotate, so that the first clamping part is clamped with the rubber roller.

[0006] As can be seen from the above solution, the opening key applies a force to the locking member through the pull rod, which is beneficial to reserve space for setting labor-saving lever structures on the opening key and the locking member, facilitating easy opening of the cover. When it is necessary to open the printer, only need to downwardly toggle the opening key to rotate, so as to drive the pull rod to move upward and drive the locking member to rotate, and then the first clamping part is separated from the rubber roller, and the opening of the printer can be realized. At this time, the printing paper roll can be installed or replaced. After the installation or replacement of the printing paper roll is completed, the flip cover is covered on the body, so that the rubber roller is clamped with the first clamping part to lock the flip cover on the body, and the closing of the printer can be realized.

[0007] A further solution is that the cover opening key is rotatably connected to the movement frame through a key shaft, and a first effort-saving lever structure with the key shaft as a fulcrum is provided on the cover opening key, an external force application part is provided at the force application point of the first effort-saving lever structure, and a driving part abutting against the first pulling part is provided at the resistance point of the first effort-saving lever.

[0008] It can be seen from the above solution that by providing the first labor-saving lever structure, it is beneficial to achieve the first labor-saving, and the user can open the cover of the printer with less force.

[0009] A further solution is that the locking piece is rotatably connected to the movement frame through the cover opening shaft, and a second effort-saving lever structure with the cover opening shaft as the fulcrum is provided on the locking piece, the pulling mating part is provided on the force application point of the second effort-saving lever structure, and the first clamping part is provided on the resistance point of the second effort-saving lever structure.

[0010] It can be seen from the above scheme that by providing the second labor-saving lever structure, it is beneficial to achieve the second labor-saving. Under the joint action of the two labor-saving lever structures, the user can open the cover of the printer with less force.

[0011] A further solution is that the first pulling part is provided with a first arc surface, which is arranged above the driving part and abuts against the driving part; the second pulling part is provided with a second arc surface, which is arranged below the pulling matching part and abuts against the pulling matching part.

[0012] It can be seen from the above scheme that the above arrangement is conducive to ensuring that the cover opening key can drive the first pulling part to move upward while rotating; the above arrangement is conducive to ensuring that the pull rod can drive the locking member to rotate while moving upward.

[0013] A further solution is that the movement frame is provided with a slide groove, the slide groove extends along a first direction, a first guide portion is provided in the slide groove, the pull rod is provided with a second guide portion, and the first guide portion and the second guide portion are clearance-matched.

[0014] It can be seen from the above scheme that the above arrangement is conducive to achieving the guiding effect of the pull rod.

[0015] A further solution is that a mounting groove is provided at at least one end of the movement frame, the first clamping portion is set as a clamping groove, the mounting groove is connected to the clamping groove, and a hook portion that can prevent the rubber roller from escaping from the mounting groove is provided on at least one side of the groove wall of the clamping groove, and the hook portion protrudes from the groove wall of the mounting groove.

[0016] It can be seen from the above scheme that, through the above arrangement, the end of the rubber roller is arranged in the installation groove and the clamping groove at the same time, and the hook is used to limit the rubber roller from easily falling out of the installation groove, thereby ensuring the reliability of closing the cover.

[0017] A further solution is that a print head support and an elastic member are also provided on the body. The print head support is arranged between the locking member and the rubber roller. The elastic member can apply a force to the print head support to move it in the direction of the rubber roller, so that the position of the print head support is adjustable.

[0018] As can be seen from the above solution, through the above settings, it is beneficial to ensure that the print head support can be close to the rubber roller, so that the paper passing between the print head support and the rubber roller can be printed normally.

[0019] A further improved solution is that the print head support includes a support side plate and two support end plates. The support side plate is fixedly connected to the support end plates. The support end plates are provided with hinge holes, and the hinge holes are connected to the opening cover shaft. One end of the elastic member abuts against the support side plate, and the support side plate can rotate around the opening cover shaft.

[0020] As can be seen from the above solution, by setting the position of the support side plate to be adjustable, it is beneficial to install the print head on the support side plate and control the print head to be as close to the rubber roller as possible, which is convenient for normal printing.

[0021] A further solution is that the locking member includes an opening cover side plate and an opening cover end plate. The opening cover side plate is fixedly connected to the opening cover end plate. The opening cover side plate is provided with a perforation. A side wall is provided at the corresponding position of the movement mechanism frame with respect to the opening cover side plate. One end of the elastic member abuts against the print head support, and the other end of the elastic member passes through the perforation and abuts against the side wall.

[0022] As can be seen from the above solution, through the above settings, it is beneficial to ensure that the elastic member does not fall off and ensure the printing reliability.

[0023] A further solution is that at least one end of the movement mechanism frame is provided with an avoidance groove, and at least one end of the print head support is provided with a protrusion, and the protrusion is movably arranged in the avoidance groove.

[0024] As can be seen from the above solution, through the above settings, the rotation angle of the print head support can be restricted by the groove wall of the avoidance groove. Description of the Drawings

[0025] Figure 1 is a structural diagram of an embodiment of the present invention with the body and the flip cover omitted.

[0026] Figure 2 is Figure 1 an enlarged view of part A in

[0027] Figure 3 is a structural diagram of an embodiment of the present invention with the body, the flip cover and the movement mechanism frame omitted.

[0028] Figure 4 is an exploded view of an embodiment of the present invention with the body, the flip cover and the movement mechanism frame omitted.

[0029] Figure 5This is the structural diagram when the body, the flip cover, and the movement holder are omitted in the embodiment of the present utility model during the opening of the cover.

[0030] Figure 6 This is the side view when the body, the flip cover, and the movement holder are omitted in the embodiment of the present utility model during the opening of the cover.

[0031] Figure 7 This is the structural diagram of the flip cover in the embodiment of the present utility model.

[0032] Figure 8 This is the cross-sectional view at the opening key in the embodiment of the present utility model.

[0033] Figure 9 This is the cross-sectional view at the locking member in the embodiment of the present utility model.

[0034] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments. Specific embodiments

[0035] See Figures 7 to 9 , a rotary opening structure of a printer provided in this embodiment includes a body 10 and a flip cover 20. The first end of the flip cover 20 is hinged to the body 10 through a rotating shaft 30, and a torsion spring 40 is sleeved on the rotating shaft 30. The torsion spring 40 elastically abuts between the first end of the flip cover 20 and the body 10; a rubber roller 50 is rotatably provided at the second end of the flip cover 20, and the flip cover 20 can drive the rubber roller 50 to rotate around its rotating shaft 30 to realize the opening and closing of the printer cover.

[0036] See Figures 1 to 6 , and in combination with Figure 9 , a movement holder 1, a pull rod 2, an opening key 3, and a locking member 4 are provided on the body 10.

[0037] A chute 11 is provided at one end in the length direction of the movement holder 1, and the chute 11 extends along a first direction. The first direction X1 is the height direction of the printer when it is placed horizontally, and the first direction X1 is perpendicular to the extending direction of the rubber roller 50.

[0038] The pull rod 2 is slidably arranged in the chute 11. A first guiding portion (not shown in the figure) is provided in the chute 11 along the first direction X1. A second guiding portion 21 is provided on the pull rod 2. The first guiding portion and the second guiding portion 21 are in clearance fit to ensure that the pull rod 2 moves back and forth along the first direction X1. The first guiding portion is provided as a protrusion, and the second guiding portion 21 is provided as a groove that engages with the protrusion in a concave-convex manner. Alternatively, the first guiding portion is provided as a groove, and the second guiding portion 21 is provided as a protrusion that engages with the groove in a concave-convex manner. The upper and lower ends of the pull rod 2 are respectively provided with a first pulling portion 22 and a second pulling portion 23. The number of the first pulling portions 22 is set to two, and the two first pulling portions 22 are respectively arranged on the left and right first side walls of the pull rod 2. The second pulling portion 23 is arranged on the second side wall of the pull rod 2, and the second side wall is arranged between the two first side walls.

[0039] The lid-opening key 3 is rotatably connected to the movement frame 1 through two key shafts 5, and the key shafts 5 are perpendicular to the rubber roller 50. The movement frame 1 is provided with key shaft mounting holes 14 on both side walls of the chute 11. One end of the key shaft 5 is arranged in the key shaft mounting hole 14, and the other end of the key shaft 5 is connected to the lid-opening key 3. The lid-opening key 3 is respectively provided with an external force acting portion 31 and a driving portion 32 on both sides of the key shaft 5. The driving portion 32 extends into the chute 11 and is arranged below the first pulling portion 22. The driving portion 32 can be in contact with the first pulling portion 22, so that the driving portion 32 and the first pulling portion 22 can move up and down synchronously, thereby driving the pull rod 2 to move up and down along the first direction X1.

[0040] When closing the lid, due to manufacturing errors or assembly errors, the driving portion 32 can be adjacent to the first pulling portion 22. At this time, the gap between the driving portion 32 and the first pulling portion 22 is greater than zero. When opening the lid, the user can turn the lid-opening key 3 from the external force acting portion 31, so that the driving portion 32 rotates around the key shaft 5, so that the gap between the driving portion 32 and the first pulling portion 22 is reduced to zero, so that the driving portion 32 is in contact with the first pulling portion 22, and then the two can move up synchronously.

[0041] The lid-opening key 3 is provided with a first labor-saving lever structure with the key shaft 5 as the fulcrum. The external force acting portion 31 is arranged at the force application point of the first labor-saving lever structure, and the driving portion 32 is arranged at the resistance point of the first labor-saving lever structure. The power arm of the first labor-saving lever structure is greater than its resistance arm to achieve the purpose of saving labor and facilitating the user to open the lid with a smaller force.

[0042] Both ends of the locking member 4 are rotatably connected to the movement frame 1 through the cover opening shaft 6, and the cover opening shaft 6 is arranged parallel to the rubber roller 50. The locking member 4 includes a cover opening side plate 41 and two cover opening end plates 42, and the cover opening side plate 41 is connected between the two cover opening end plates 42. The cover opening end plates 42 are provided with a first clamping portion 421 and a pull-fitting portion 422, and the first clamping portion 421 and the pull-fitting portion 422 are respectively arranged on both sides of the cover opening shaft 6, and the pull-fitting portion 422 is arranged above the second pull portion 23 and can abut against the second pull portion 23, so that the pull-fitting portion 422 and the second pull portion 23 can move up and down synchronously, thereby driving the locking member 4 to rotate around the cover opening shaft 6.

[0043] When the cover is closed, due to the influence of manufacturing error or assembly error, the pull-fitting portion 422 abuts against the second pull portion 23, and the gap between the pull-fitting portion 422 and the second pull portion 23 is greater than zero. When the cover is opened, the pull rod 2 moves upward, so that the second pull portion 23 moves upward, so that the gap between the second pull portion 23 and the pull-fitting portion 422 is reduced to zero, so that the second pull portion 23 abuts against the pull-fitting portion 422, and then the two can move upward synchronously.

[0044] The first clamping portion 421 is clamped with the rubber roller 50 . Specifically, a second clamping portion 501 is provided at the end of the rubber roller 50 . The second clamping portion 501 is preferably a column. The first clamping portion 421 and the second clamping portion 501 are detachably clamped.

[0045] When the cover opening key 3 is driven by an external force to rotate around the key axis 5, the cover opening key 3 drives the pull rod 2 to move upward along the first direction X1 through the driving part 32 and the first pulling part 22, and then drives the first clamping part 421 of the locking member 4 to rotate downward around the cover opening axis 6 through the second pulling part 23 and the pulling matching part 422, so that the first clamping part 421 is disconnected from the second clamping part 501. At this time, with the cooperation of the torsion spring 40, the flip cover 20 is flipped upward to open the cover. When the cover needs to be closed, the flip cover 20 is manually driven to flip downward so that the second clamping part 501 is clamped with the first clamping part 421, and the cover can be closed.

[0046] In this embodiment, a second effort-saving lever structure with the cover opening shaft 6 as a fulcrum is provided on the locking member 4, the pulling mating portion 422 is provided on the force application point of the second effort-saving lever structure, and the first clamping portion 421 is provided on the resistance point of the second effort-saving lever structure. The power arm of the second effort-saving lever structure is larger than its resistance arm to achieve the purpose of effort saving, making it convenient for users to easily open the cover with less force.

[0047] The cover opening key 3 of this embodiment is preferably arranged at the connection between two adjacent side walls of the body 10, which is convenient for the user to turn the cover opening key 3 and avoid a large gap between the cover opening key 3 and the body 10, thereby improving the aesthetics.

[0048] CombinationFigure 3 and Figure 4 On the first pulling part 22, a first arc surface 221 is provided. The first arc surface 221 is arranged above the driving part 32 and abuts against the driving part 32, so that the opening key 3 can rotate relative to the first pulling part 22 while driving the pull rod 2 to move up and down, avoiding jamming. On the second pulling part 23, a second arc surface 231 is provided. The second arc surface 231 is arranged below the pulling and mating part 422 and abuts against the pulling and mating part 422, so that the second pulling part 23 can drive the pulling and mating part 422 to rotate relative to the second pulling part 23 while moving up and down, avoiding jamming.

[0049] Combined with Figure 2 and Figure 3 At both ends of the movement frame 1, installation grooves 12 are provided. The installation grooves 12 extend along the length direction of the movement frame 1. The first clamping part 421 is set as a clamping groove. The installation groove 12 communicates with the clamping groove, and on at least one side wall of the clamping groove, a hook part that can prevent the second clamping part 501 from disengaging from the installation groove 12 is provided. The hook part protrudes from the groove wall of the installation groove 12. The second clamping part 501 of the rubber roller 50 is simultaneously arranged in the installation groove 12 and the clamping groove, and its accidental disengagement is restricted by one side wall of the clamping groove, ensuring the reliability of closing the cover.

[0050] In Figure 3 and Figure 4 On the body 10, a print head bracket 7 and two elastic members 8 are further provided. The print head bracket 7 is arranged between the locking member 4 and the rubber roller 50. Both elastic members 8 are arranged between the locking member 4 and the print head bracket 7. The elastic member 8 can apply a force to the print head bracket 7 to move in the direction of the rubber roller 50, so that the position of the print head bracket 7 is adjustable. Specifically:

[0051] The print head bracket 7 includes a bracket side plate 71 and two bracket end plates 72. The bracket side plate 71 is connected between the two bracket end plates 72. A hinge hole 721 is provided at the lower part of the bracket end plate 72. The opening shaft 6 penetrates through the thickness direction of the opening end plate 42. The bracket end plate 72 is arranged on the inner side of the opening end plate 42, and the opening shaft 6 is inserted into the hinge hole 721. One end of the elastic member 8 abuts against the upper part of the bracket side plate 71, and the bracket side plate 71 can rotate around the opening shaft 6. A print head (not shown in the figure) can be installed on the bracket side plate 71. A printing channel for the printing paper to pass through is formed between the print head and the rubber roller 50. The setting of the elastic member 8 enables the print head to closely adhere to the rubber roller 50, which is beneficial to ensuring the normal progress of printing.

[0052] Furthermore, two through holes 411 are provided through the cover opening side plate 41, and the through holes 411 are provided corresponding to the elastic member 8. The side of the movement frame 1 corresponding to the cover opening side plate 41 has a side wall, one end of the elastic member 8 abuts against the print head bracket 7, and the other end of the elastic member 8 passes through the through hole 411 and abuts against the side wall. The elastic member 8 is provided in the transfer hole 411, which is conducive to ensuring that the elastic member 8 will not fall off easily.

[0053] Combination Figure 2 and Figure 4 Both ends of the core frame 1 are provided with avoidance grooves 13, and both ends of the print head bracket 7 are provided with protrusions 73, which protrude from the bracket end plate 72. The width of the avoidance groove 13 is greater than the width of the protrusion 73, and the bottom wall of the protrusion 73 is higher than the bottom of the avoidance groove 13. The protrusion 73 is movably arranged in the avoidance groove 13, and the protrusion 73 can swing in the avoidance groove 13. The groove wall of the avoidance groove 13 can limit the swing amplitude of the protrusion 13, thereby limiting the rotation angle of the print head bracket 7.

[0054] In order to ensure that the first clamping portion 421 of the locking member 4 is in a locked state under normal conditions, a torsion spring (not shown in the figure) can be provided on the cover opening shaft 6, and the two ends of the torsion spring are elastically abutted against the locking member 4 and the movement frame 1. When the external force acting on the cover opening key 3 disappears, under the action of the torsion spring, the first clamping portion 421 is in a position to be clamped with the second clamping portion 501.

[0055] In summary, it can be seen that by setting the cover opening key 3 to apply a force to the locking member 4 through the pull rod 2, it is beneficial to reserve space for setting a labor-saving lever structure on the cover opening key 3 and the locking member 4, so as to facilitate and easily open the cover; when it is necessary to open the printer, it is only necessary to push the cover opening key 3 downward to rotate, so as to drive the pull rod 2 to move up, and drive the locking member 4 to rotate, thereby separating the first clamping portion 421 from the rubber roller 50, so as to achieve the opening of the printer, and the printing paper roll can be installed or replaced at this time; when the installation or replacement of the printing paper roll is completed, the flip cover 20 is closed on the body 10, so that the end of the rubber roller 50 is embedded in the first clamping portion 421, so as to lock the flip cover 20 on the body 10, so as to achieve the closing of the printer.

[0056] Finally, it should be emphasized that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various changes and modifications. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A rotating cover opening structure of a printer, comprising a body and a flip cover, wherein a first end of the flip cover is hinged to the body, and a rubber roller is arranged on a second end of the flip cover, characterized in that: The machine body is provided with: Movement frame; A pull rod, the pull rod is slidably arranged on the movement frame along a first direction, and the pull rod is provided with a first pulling part and a second pulling part; An opening key, the opening key being rotatably connected to the movement frame, one end of the opening key being abutted against the first pulling portion, and the opening key being able to drive the pull rod to move along the first direction; The locking member is rotatably connected to the movement frame, and a first clamping portion and a pulling fitting portion are provided on the locking member. The pulling fitting portion can abut against the second pulling portion, and the pull rod can drive the locking member to rotate so that the first clamping portion is clamped with the rubber roller.

2. The rotating cover opening structure of the printer according to claim 1, characterized in that: The cover opening key is rotatably connected to the movement frame through a key shaft, and a first effort-saving lever structure with the key shaft as a fulcrum is provided on the cover opening key, an external force application part is provided at the force application point of the first effort-saving lever structure, and a driving part that can abut against the first pulling part is provided at the resistance point of the first effort-saving lever.

3. The rotating cover opening structure of the printer according to claim 1, characterized in that: The locking piece is rotatably connected to the movement frame via the cover opening shaft, and a second effort-saving lever structure with the cover opening shaft as a fulcrum is provided on the locking piece, the pulling mating portion is provided on the force application point of the second effort-saving lever structure, and the first clamping portion is provided on the resistance point of the second effort-saving lever structure.

4. The rotating cover opening structure of the printer according to claim 2, characterized in that: The first pulling portion is provided with a first arc surface, and the first arc surface is arranged above the driving portion and abuts against the driving portion; The second pulling portion is provided with a second arc surface, and the second arc surface is arranged below the pulling matching portion and abuts against the pulling matching portion.

5. The rotating cover opening structure of the printer according to claim 1, characterized in that: The movement frame is provided with a slide groove, the slide groove extends along the first direction, a first guide portion is provided in the slide groove, the pull rod is provided with a second guide portion, and the first guide portion is clearance-matched with the second guide portion.

6. The rotating cover opening structure of the printer according to claim 1, characterized in that: A mounting groove is provided at at least one end of the movement frame, the first clamping portion is set as a clamping groove, the mounting groove is connected to the clamping groove, and a hook portion capable of preventing the rubber roller from escaping from the mounting groove is provided on at least one side of the groove wall of the clamping groove, and the hook portion protrudes from the groove wall of the mounting groove.

7. The rotating cover opening structure of the printer according to claim 3, characterized in that: The machine body is also provided with a print head support and an elastic member. The print head support is arranged between the locking member and the rubber roller. The elastic member can exert a force on the print head support to move in the direction of the rubber roller, so that the position of the print head support is adjustable.

8. The rotating cover opening structure of the printer according to claim 7, characterized in that: The print head bracket includes a bracket side plate and a bracket end plate, the bracket side plate is fixedly connected to the bracket end plate, the bracket end plate is provided with a hinge hole, the hinge hole is connected to the cover opening shaft, one end of the elastic member abuts against the bracket side plate, and the bracket side plate can rotate around the cover opening shaft.

9. The rotating cover opening structure of the printer according to claim 7, characterized in that: The locking member includes an opening cover side plate and an opening cover end plate, the opening cover side plate is fixedly connected to the opening cover end plate, the opening cover side plate is provided with a through hole, the movement frame is provided with a side wall corresponding to the opening cover side plate, one end of the elastic member is abutted against the print head bracket, and the other end of the elastic member passes through the through hole and abuts against the side wall.

10. The rotating cover opening structure of the printer according to claim 7, characterized in that: At least one end of the core frame is provided with an avoidance groove, and at least one end of the print head bracket is provided with a protrusion, and the protrusion is movably arranged in the avoidance groove.

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