Cover opening installation structure of printer

Abstract

The utility model discloses a cover opening mounting structure of a printer, relates to the field of printer equipment, and can solve the problem that a paper bin cover cannot be normally opened or closed due to the fact that a torsional spring of the paper bin cover of the printer in the prior art is complex in mounting and fails or is abraded in the long-time use process. The uncovering mounting structure comprises a shell, a paper bin, a paper bin cover and a driving part, wherein the paper bin is integrally formed on the inner wall of the shell and used for mounting a paper roll; the paper bin cover is rotationally connected to the shell and used for sealing a bin body of the paper bin; the driving part is rotationally connected to the shell and used for driving the paper bin cover to rotate; an ejection boss is connected to the side, close to the paper bin, of the paper bin cover, a driving arc face is formed on the ejection boss, and the driving piece is connected with a swing arm matched with the driving piece to rotate and used for making the end of the swing arm abut against the driving arc face and slide in the length extending direction of the driving arc face.

Description

Technical Field

[0001] The present application relates to the field of printer equipment, and in particular to a cover-opening and installation structure of a printer. Background Art

[0002] Printers (POS type) are widely used in retail, catering, logistics and other industries. They are mainly used to quickly print documents such as receipts, labels and invoices. This type of printer is small in size, light in weight and easy to operate. It is usually placed at the cash register, service counter or office desk for use.

[0003] At present, the common way to open the paper bin cover of printers on the market is to press the door opening button to disengage the rubber roller clip from the rubber roller of the paper bin cover, and then use the torque of the torsion spring installed on the paper bin cover to automatically open the paper bin cover. Although this method can realize the automatic opening of the paper bin cover, the installation and fixing of the torsion spring is relatively complicated, and it is easy for the paper bin cover to fail to open or close normally due to failure or wear of the torsion spring during long-term use. Utility Model Content

[0004] To this end, the present application provides a printer cover installation structure to solve the problem in the prior art that the torsion spring of the printer's paper bin cover is complicated to install and fails or wears out during long-term use, resulting in the paper bin cover being unable to open or close normally.

[0005] In order to achieve the above objectives, this application provides the following technical solutions:

[0006] A cover-opening installation structure for a printer comprises a shell, a paper bin integrally formed on the inner wall of the shell and used for installing a paper roll, a paper bin cover rotatably connected to the shell and used for closing the bin body of the paper bin, and a driving member rotatably connected to the shell and used for driving the paper bin cover to rotate, wherein the paper bin cover is connected to an ejection boss on one side close to the paper bin, the ejection boss is formed with a driving arc surface, and the driving member is connected to a swing arm that cooperates with its own rotation, so that the end of the swing arm abuts against the driving arc surface and slides along the length extension direction of the driving arc surface.

[0007] Optionally, the paper bin cover includes a cover plate, two rotating arms respectively connected to opposite sides of the cover plate, a first rotating shaft connected to one end of the rotating arm away from the cover plate and used for rotationally connecting to the shell, two ejection bosses respectively connected to the cover plate and one end away from the rotating arm, the two ejection bosses and the two rotating arms correspond one-to-one, the driving member includes a main body, a second rotating shaft connected to the main body and rotationally connected to the shell, two swing arms respectively connected to both ends of the main body, and a button connected to the main body and convenient for manual pressing, the two swing arms and the two ejection bosses correspond one-to-one, the button and the swing arm are respectively located on both sides of the central axis of the second rotating shaft, so that pressing the button drives the swing arm to rotate around the second rotating shaft.

[0008] Optionally, the rotating arm includes a first arm plate integrally formed with the cover plate, and a second arm plate integrally formed with an end of the first arm plate away from the cover plate, the first rotating shaft is rotatably connected to the end of the second arm plate away from the first arm plate, and the opposite sides of the bin wall of the paper bin are respectively integrally formed with limiting steps that cooperate with the second arm plate to limit the rotation of the rotating arm, the two limiting steps correspond one-to-one to the two rotating arms, the driving member is located on the side of the paper bin away from the bin body, and the limiting step is provided with a driving hole that facilitates the end of the swing arm to pass through the bin body.

[0009] Optionally, the outer wall of the paper bin away from the bin body is connected to a plurality of pivot plates, one side of the pivot plate is provided with a pivot hole for matching with the second pivot, the side wall of the pivot plate is provided with a pivot groove connected to the pivot hole and interference fit with the second pivot, the main body is connected to a plurality of second pivots, the plurality of second pivots are arranged at intervals along the length extension direction of the main body, and the plurality of second pivots correspond one-to-one to the plurality of pivot plates.

[0010] Optionally, the shell is provided with a button hole connected to the inner cavity of the shell and used to cooperate with the button, the button is provided with a finger groove for a finger to be inserted into, the outer wall of the paper bin away from the bin body is connected with a reset plate, and a reset spring is connected between the reset plate and the rotating arm to reset the button to the button hole after the button is separated from the finger.

[0011] Optionally, the limiting step includes a first step that matches the second arm plate and a second step that matches the swing arm, the second step is higher than the first step, and the driving hole is opened on the second step.

[0012] Compared with the prior art, this application has at least the following beneficial effects:

[0013] The driving member is rotated to rotate the swing arm of the driving member, and the end of the swing arm is rotated to abut against the driving arc surface and slide along the length extension direction of the driving arc surface, so that the ejection boss and the paper bin cover are rotated and opened under the drive of the driving member. The paper bin cover only needs to be opened to a certain angle under the drive of the driving member, and then it can be fully opened with the assistance of human hands. Compared with the torsion spring in the prior art, the design of the present application simplifies the structure of the cover opening mechanism, avoids the cover opening failure caused by the failure of the torsion spring, and improves the reliability and durability of the cover opening structure. The design of the ejection boss through the driving arc surface makes the cover opening process smoother and reduces the jamming phenomenon. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more intuitively illustrate the prior art and the present application, several exemplary drawings are given below. It should be understood that the specific shapes and structures shown in the drawings should not generally be regarded as limiting conditions for implementing the present application; for example, those skilled in the art are capable of easily making conventional adjustments or further optimizations to the addition / reduction / attribution division, specific shapes, positional relationships, connection methods, dimensional ratios, etc. of certain units (components) based on the technical concepts and exemplary drawings disclosed in the present application.

[0015] Figure 1 A schematic structural diagram of a first state of an open cover installation structure of a printer provided by an embodiment of the present application;

[0016] Figure 2 A schematic structural diagram of a second state of an open cover installation structure of a printer provided by an embodiment of the present application;

[0017] Figure 3 for Figure 2 A partial structural cross-sectional view of

[0018] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0019] Figure 5 for Figure 3 Another perspective of the picture;

[0020] Figure 6 for Figure 5 Bottom view of

[0021] Figure 7 for Figure 6 The enlarged view of point B;

[0022] Figure 8 A schematic diagram of the matching structure of a paper bin cover and a driving member of a cover-opening installation structure of a printer provided in one embodiment of the present application;

[0023] Fig. 9 for Figure 3 Exploded diagram of some structures;

[0024] Fig.10 for Fig. 9 Enlarged view of point C;

[0025] Fig.11 A schematic structural diagram of a paper bin cover of an opening and installation structure of a printer provided in one embodiment of the present application;

[0026] Fig.12 A schematic structural diagram of a driving component of a cover opening installation structure of a printer provided in one embodiment of the present application.

[0027] Description of reference numerals:

[0028] 1. Shell; 11. Button hole; 2. Paper bin; 21. Bin body; 22. Limiting step; 221. First step; 222. Second step; 223. Drive hole; 23. Rotating shaft plate; 231. Rotating shaft hole; 232. Rotating shaft slot; 24. Reset plate; 3. Paper bin cover; 31. Cover plate; 32. Rotating arm; 321. First arm plate; 322. Second arm plate; 33. Ejector boss; 331. Driving arc surface; 4. Driving member; 41. Main body; 411. Second rotating shaft; 42. Swing arm; 43. Button; 431. Finger slot; 5. Reset spring. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0030] In the description of this application: unless otherwise specified, the meaning of "plurality" is two or more. The terms "first", "second", "third", etc. in this application are intended to distinguish the objects referred to, and do not have special meanings in terms of technical connotations (for example, they should not be understood as emphasizing the importance or order, etc.). Expressions such as "including", "comprising", "having", etc. also mean "not limited to" (certain units, components, materials, steps, etc.).

[0031] refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 8The present application discloses a cover-opening installation structure of a printer, including a shell 1, a paper bin 2 integrally formed on the inner wall of the shell 1 and used for installing a paper roll, a paper bin 2 cover rotatably connected to the shell 1 and used to close the bin body 21 of the paper bin 2, and a driving member 4 rotatably connected to the shell 1 and used to drive the paper bin 2 cover to rotate, a side of the paper bin 2 cover close to the paper bin 2 is connected to an ejection boss 33, the ejection boss 33 is formed with a driving arc surface 331, and the driving member 4 is connected to a swing arm 42 that cooperates with its own rotation, so that the end of the swing arm 42 abuts against the driving arc surface 331 and slides along the length extension direction of the driving arc surface 331.

[0032] The driving member 4 is rotated to rotate the swing arm 42 of the driving member 4, and the end of the swing arm 42 is rotated to abut against the driving arc surface 331 and slide along the length extension direction of the driving arc surface 331, so that the ejection boss 33 and the paper bin 2 cover are rotated and opened under the drive of the driving member 4. The paper bin 2 cover only needs to be opened to a certain angle under the drive of the driving member 4, and then it can be fully opened with the assistance of human hands. Compared with the torsion spring in the prior art, the design of the present application simplifies the structure of the cover opening mechanism, avoids the cover opening failure caused by the failure of the torsion spring, and improves the reliability and durability of the cover opening structure. The design of the ejection boss 33 through the driving arc surface 331 makes the cover opening process smoother and reduces the jamming phenomenon.

[0033] refer to Figure 3 , Figure 4 , Figure 5 , Figure 8 , Fig. 9 , Fig.11 and Fig.12 The paper bin 2 cover includes a cover plate 31, two rotating arms 32 respectively connected to opposite sides of the cover plate 31, a first rotating shaft connected to one end of the rotating arm 32 away from the cover plate 31 and used for rotationally connecting to the shell body 1, and two ejection bosses 33 respectively connected to one end of the cover plate 31 and away from the rotating arm 32. The two ejection bosses 33 correspond to the two rotating arms 32 one by one. The driving member 4 includes a main body 41, a second rotating shaft 411 connected to the main body 41 and rotationally connected to the shell body 1, two swing arms 42 respectively connected to the two ends of the main body 41, and a button 43 connected to the main body 41 and convenient for manual pressing. The two swing arms 42 correspond to the two ejection bosses 33 one by one. The button 43 and the swing arm 42 are respectively located on both sides of the central axis of the second rotating shaft 411, so that pressing the button 43 drives the swing arm 42 to rotate around the second rotating shaft 411. The button 43 is pressed manually to drive the swing arm 42 to rotate around the second rotating shaft 411 , and the end of the swing arm 42 slides along the driving arc surface 331 of the ejection boss 33 , so that the ejection boss 33 and the paper bin 2 cover are rotated and opened under the drive of the driving member 4 .

[0034] The rotating arm 32 includes a first arm plate 321 integrally formed on the cover plate 31, and a second arm plate 322 integrally formed on an end of the first arm plate 321 away from the cover plate 31. The first rotating shaft is rotatably connected to an end of the second arm plate 322 away from the first arm plate 321. The opposite sides of the bin wall of the paper bin 2 are respectively integrally formed with limiting steps 22 that cooperate with the second arm plate 322 to limit the rotation of the rotating arm 32. The two limiting steps 22 correspond one-to-one to the two rotating arms 32. The driving member 4 is located on the side of the paper bin 2 away from the bin body 21. The limiting step 22 is provided with a driving hole 223 that facilitates the end of the swing arm 42 to pass through the bin body 21.

[0035] When the driving member 4 is pressed, the end of the swing arm 42 enters the bin body 21 through the driving hole 223 on the limiting step 22 and contacts the driving arc surface 331 of the ejection boss 33. In the process of continuing to press, the swing arm 42 slides along the driving arc surface 331, pushes the ejection boss 33 and causes the cover of the paper bin 2 to rotate around the first rotation axis to open. The design of the limiting step 22 effectively limits the rotation range of the rotating arm 32, ensuring the stability and accuracy of the cover of the paper bin 2 when opening and closing.

[0036] refer to Fig. 9 and Fig.10 The outer wall of the paper bin 2 away from the bin body 21 is connected to a plurality of pivot plates 23, one side of the pivot plate 23 is provided with a pivot hole 231 matching the second pivot 411, the side wall of the pivot plate 23 is provided with a pivot groove 232 connected to the pivot hole 231 and interference fit with the second pivot 411, the main body 41 is connected to a plurality of second pivot shafts 411, the plurality of second pivot shafts 411 are arranged at intervals along the length extension direction of the main body 41, and the plurality of second pivot shafts 411 correspond one-to-one to the plurality of pivot plates 23.

[0037] The second shaft 411 can enter the shaft hole 231 through the shaft groove 232. The installation process is simple and convenient. The interference fit ensures the stability of the second shaft 411 in the shaft hole 231 and avoids the problem of parts falling off or shifting due to looseness. Through this design, the installation steps are simplified and the assembly difficulty is reduced.

[0038] In some embodiments, the plurality of rotating shaft plates 23 may be grouped in pairs, each group corresponding to a second rotating shaft 411 , and both ends of the second rotating shaft 411 are respectively inserted into the rotating shaft holes 231 of the two rotating shaft plates 23 .

[0039] In some embodiments, the body 41, the swing arm 42, the second rotating shaft 411 and the button 43 can be integrally formed, thus reducing the installation between accessories, improving assembly efficiency and reducing production costs. Through the integrally formed design, the overall structure is more compact, the connection between parts is more secure, and the failure caused by loose or misaligned accessories in the traditional assembly process is avoided.

[0040] refer to Figure 3 , Figure 4 , Figure 5 , Fig. 9 and Fig.12 The driving member 4 is located in the inner cavity of the shell 1. The shell 1 is provided with a button hole 11 connected to the inner cavity of the shell 1 and used to cooperate with the button 43. The button 43 is provided with a finger groove 431 for a finger to be inserted into. The outer wall of the paper bin 2 away from the bin body 21 is connected with a reset plate 24. A reset spring 5 is connected between the reset plate 24 and the rotating arm 32 to reset the button 43 to the button hole 11 after the finger is separated.

[0041] The finger extends from the button hole 11 into the finger groove 431 and presses the button 43, which can drive the main body 41 to rotate, drive the swing arm 42 to enter the bin body 21 through the drive hole 223 of the limit step 22, and slide along the drive arc surface 331, thereby pushing the ejection boss 33 and causing the paper bin 2 cover to rotate around the first rotation axis to open. When the finger leaves the button 43, the reset spring 5 resets the reset plate 24 and the rotating arm 32 to the original position, and the button 43 also returns to the button hole 11.

[0042] refer to Figure 3 The limiting step 22 includes a first step 221 that matches the second arm plate 322 and a second step 222 that matches the swing arm 42 . The second step 222 is higher than the first step 221 , and the driving hole 223 is opened in the second step 222 .

[0043] With this design, the ejection boss 33 can be made relatively small, which does not affect the stability of the overall structure and can effectively reduce the amount of material used. The layered design of the first step 221 and the second step 222 enables the swing arm 42 to accurately contact the ejection boss 33 through the driving hole 223 during the driving process, ensuring the smooth opening of the cover of the paper bin 2. Since the second step 222 is higher than the first step 221, the swing arm 42 can swing within a larger range of motion.

[0044] The technical features of the above embodiments may be arbitrarily combined (as long as there is no contradiction in the combination of these technical features). To make the description concise, not all possible combinations of the technical features in the above embodiments are described; these embodiments that are not explicitly written should also be considered to be within the scope of this specification.

[0045] The above is a relatively specific and detailed description of the present application through general description and specific embodiments. It should be understood that, based on the technical concept of the present application, several conventional adjustments or further innovations can be made to these specific embodiments; however, as long as they do not deviate from the technical concept of the present application, the technical solutions obtained by these conventional adjustments or further innovations also fall within the scope of protection of the claims of the present application.

Claims

1. A cover-opening installation structure of a printer, characterized in that: It includes a shell, a paper bin integrally formed on the inner wall of the shell and used for installing a paper roll, a paper bin cover rotatably connected to the shell and used to close the bin body of the paper bin, and a driving member rotatably connected to the shell and used to drive the paper bin cover to rotate, the paper bin cover is connected to an ejection boss on one side close to the paper bin, the ejection boss forms a driving arc surface, and the driving member is connected to a swing arm that cooperates with its own rotation, so that the end of the swing arm abuts against the driving arc surface and slides along the length extension direction of the driving arc surface.

2. The cover opening installation structure according to claim 1, characterized in that: The paper bin cover includes a cover plate, two rotating arms respectively connected to opposite sides of the cover plate, a first rotating shaft connected to one end of the rotating arm away from the cover plate and used for rotationally connecting to the shell, and two ejection bosses respectively connected to one end of the cover plate and away from the rotating arm, and the two ejection bosses correspond one to one with the two rotating arms. The driving member includes a main body, a second rotating shaft connected to the main body and rotationally connected to the shell, two swing arms respectively connected to both ends of the main body, and a button connected to the main body and convenient for manual pressing. The two swing arms correspond one to one with the two ejection bosses, and the button and the swing arm are respectively located on both sides of the central axis of the second rotating shaft, so that pressing the button drives the swing arm to rotate around the second rotating shaft.

3. The cover opening and installation structure according to claim 2, characterized in that: The rotating arm includes a first arm plate integrally formed on the cover plate, and a second arm plate integrally formed on an end of the first arm plate away from the cover plate. The first rotating shaft is rotatably connected to an end of the second arm plate away from the first arm plate. Limiting steps cooperating with the second arm plate are respectively integrally formed on opposite sides of the bin wall of the paper bin, and are used to limit the rotation of the rotating arm. The two limiting steps correspond to the two rotating arms one by one. The driving member is located on a side of the paper bin away from the bin body. The limiting step is provided with a driving hole that facilitates the end of the swing arm to pass through the bin body.

4. The cover opening and installation structure according to claim 3, characterized in that: The outer wall of the paper bin away from the bin body is connected to a plurality of pivot plates, one side of the pivot plate is provided with a pivot hole for matching with the second pivot, the side wall of the pivot plate is provided with a pivot groove connected to the pivot hole and interference fit with the second pivot, the main body is connected to a plurality of second pivots, the plurality of second pivots are arranged at intervals along the length extension direction of the main body, and the plurality of second pivots correspond one-to-one to the plurality of pivot plates.

5. The cover opening and installation structure according to any one of claims 2 to 4, characterized in that: The driving member is located in the inner cavity of the shell, the shell is provided with a button hole connected to the inner cavity of the shell and used to cooperate with the button, the button is provided with a finger groove for a finger to be inserted, the outer wall of the paper bin away from the bin body is connected with a reset plate, and a reset spring is connected between the reset plate and the rotating arm to reset the button to the button hole after the button is separated from the finger.

6. The cover opening and installation structure according to claim 3, characterized in that: The limiting step includes a first step matched with the second arm plate and a second step matched with the swing arm, the second step is higher than the first step, and the driving hole is opened in the second step.

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