A device for automatically prompting paper shortage

Abstract

The present invention discloses a device for automatically prompting paper shortage. By setting a locking member and a traction assembly, the ejecting spring inside the locking member urges the second conductor to move towards the first conductor. The internal control circuits of the first conductor and the second conductor are electrically connected, and the electromagnet in the traction assembly is activated to push out the paper tray to prompt the user of the position of the paper adding window. When the paper blocks the electrical connection of the circuit, the electromagnet does not function, and the telescopic spring in the traction assembly functions to retract the paper tray. The customer controls the state of the ejecting spring by the paper placed in the paper tray, thereby controlling the expansion and contraction of the paper tray. During the entire paper replacement process, the user only needs to insert the paper through the paper adding window, and the ejection of the paper tray prompts the user of the position of the paper adding window. Even novice users can easily complete the paper replacement work, avoiding the problem that users without experience, without a manual or guidance from others, do not know the position of the paper adding window and cannot complete the operation of adding paper.

Description

Technical Field

[0001] The present invention relates to the technical field of printers, and particularly to a device for automatically prompting paper shortage. Background Art

[0002] Printers are essential equipment for modern offices. The use of printers greatly reduces the labor intensity of staff and improves work efficiency. The paper feed cassette in a printer is used to hold printing paper and supply the paper required for printing. Currently, in the single-layer added paper feed cassette during the printing process, generally, the bottom plate is driven by a gear to be lifted to the position of the paper pickup roller for paper feeding. After the last sheet of paper is sent away, a detection electromagnet above the paper feed cassette judges that the paper feed cassette is out of paper, triggering an electric control switch, and then the paper shortage light on the panel will turn red; this is the basic principle of prompting the user of paper shortage by lighting the light.

[0003] After retrieval, the invention patent with the application number CN202310225082.9 provides a method for periodically monitoring the status of a printer, including the following steps: S1: Based on the startup of the operating system, the self-starting program is automatically opened; S2: According to the startup of the self-starting program, the status of the printer is periodically detected through a communication device and a detection program; S2.1: Start the printer detection program; S2.2: Based on the startup of the detection program, initialize the printer, and start the printer communication module after obtaining the printing handle; S2.3: Obtain the detailed information of the printer according to the printing handle; S2.4: Based on the detailed information of the printer, the status of the printer can be obtained; S2.5: Based on the status of the printer, judge whether the current printer is healthy. The present invention can monitor the status of the printer in real time. When the printer fails, the operator can discover the problem in time and then solve the problem immediately, avoiding situations where the user only discovers that the printer is out of paper, out of ink, or has equipment failures when preparing to print.

[0004] However, the above patent still has the problem that when manually adding paper to the current printer, the paper needs to be placed inside the paper feed cassette first, and then operated on the printer screen or the computer terminal. The detection electromagnet needs to detect the paper again to continue printing. The process is cumbersome. For users without experience, without an instruction manual or the guidance of others, some users do not know the position of the paper adding window and cannot complete the operation of adding paper.

[0005] Based on the above problems, the present invention proposes a device for automatically prompting paper shortage. Summary of the Invention

[0006] The purpose of the present invention is to provide a device for automatically prompting paper shortage to solve the problems that the process of resuming printing after manually adding paper is cumbersome and the operation is complex after the printer prompts paper shortage in the current market.

[0007] To achieve the above object, the present invention provides the following technical solution: An automatic paper shortage prompting device, comprising:

[0008] A printer main body and internal components;

[0009] The internal components include a paper tray, a locking member, a traction assembly, and a power assembly;

[0010] The paper tray includes a paper tray bottom plate, a paper tray baffle, an outer wall, and side plates; the paper tray baffle is arranged on the inner side of the paper tray close to the printer main body and is fixedly connected to the paper tray bottom plate, the side plates are movably connected to the paper tray bottom plate, the side plates are fixedly connected to the printer main body; the outer wall is fixedly installed on the paper tray bottom plate; the side plates can slide on the paper tray bottom plate; the paper tray bottom plate can slide inside the printer main body.

[0011] The printer main body is provided with a receiving cavity, and grooves are arranged on both sides of the receiving cavity, and the grooves are fitted with the paper tray baffle.

[0012] The locking member is arranged above the paper tray bottom plate, the locking member is connected to the side plate of the printer paper tray, and the paper tray is inserted into the receiving cavity inside the printer main body;

[0013] The locking member includes a first gear, a support plate, a support block, and a rotating shaft. The support plate is arranged above the paper tray bottom plate, the first gear is arranged above the support plate, a support block is movably installed above the paper tray bottom plate, a through groove is arranged in the length direction of the support block, a rotating shaft is arranged at one end of the support plate close to the support block, the rotating shaft is movably connected to the support block and is inserted into the inside of the through groove, and the support plate is rotationally connected to the support block through the rotating shaft;

[0014] A first conductor is installed on the upper side of one end of the support plate close to the locking member;

[0015] The first gear is set as a helical gear, and a second conductor is arranged on the tooth side wall of the helical gear;

[0016] When the printing paper is used up, there is no gap between the first conductor and the second conductor; the second conductor can be clamped between the teeth of the helical gear, so that the helical gear stops rotating.

[0017] The voltage connected to the first conductor and the voltage connected to the second conductor are low voltages; the low voltage is designed such that when there is only one piece of paper left in the paper tray, the voltage between the first conductor and the second conductor cannot break through the paper to form a conductive path;

[0018] In an alternative embodiment, the low voltage is designed to be 6V.

[0019] The helical gear is connected to the stepper motor through a connecting rod. The stepper motor drives the helical gear to rotate counterclockwise. The rotation of the helical gear drives the paper to move into the printer, accelerating the paper printing work.

[0020] The traction assembly includes a telescopic spring and an electromagnet. The telescopic spring is installed on the side of the paper cassette baffle close to the printer main body 1. One end of the telescopic spring is fixedly connected to the paper cassette baffle, and the other end is fixedly connected to the inner wall of the printer main body. Electromagnets are provided on the paper cassette baffle and the corresponding inner wall of the printer main body. When the electromagnet is energized, a repulsive reaction will occur. When the paper cassette is in the working state, the telescopic spring is in a relaxed state. When the paper cassette is in the pulled-out state and the electromagnet is energized, the repulsive reaction of the electromagnet will push the paper cassette out, making the telescopic spring in a stretched state.

[0021] A jacking spring is provided at the bottom of the side of the support plate close to the first gear. The jacking spring is fixedly installed on the bottom plate of the paper cassette and is used to jack up the support plate to move upward.

[0022] In a feasible implementation manner, the electromagnets installed on the paper cassette baffle and the corresponding inner wall of the printer main body are AC electromagnets.

[0023] The design principle of the present invention lies in:

[0024] When the printer is in the working state and there is paper in the paper cassette, when the jacking spring jacks up the support plate, it will also jack up the paper to move upward and close. The paper adheres to the helical gear, and the rotation of the helical gear drives the paper to move into the printer, accelerating the paper printing work.

[0025] When the printer is in the withdrawn state and there is a lack of paper in the paper box, the ejection spring pushes up the support plate, causing the first conductor to be stuck between the gear teeth on the bevel gear, and the bevel gear stops rotating; at the same time, the first conductor contacts the second conductor, the internal circuit is turned on, triggering the generation of an electrical signal, and then triggering the reaction of the electromagnet, the paper box baffle and the corresponding electromagnet on the inner wall of the printer body produce a repulsive reaction, and the paper box is ejected as a whole to prompt the user the position of the paper adding window; when the user inserts the paper from the paper adding window, the weight of the paper will slightly press down the ejection spring at the bottom of the support plate, and the support plate will drive the first conductor downward; the first conductor is disconnected from the second conductor, the internal circuit is disconnected, and the electrical signal disappears. , the electromagnet is powered off, the spring on the paper box baffle contracts, and the electromagnet uses an AC electromagnet to slowly move the paper box as a whole inward; during the slow inward movement of the paper box, the paper will be driven to pass through the position where the first conductor is connected to the teeth on the bevel gear. When the paper box moves to the appropriate position, the bevel gear continues to rotate, and the printer starts to run normally. The entire paper changing process only requires the user to insert the paper from the paper adding window, and the pop-up of the paper box prompts the user the position of the paper adding window. Users without basic knowledge can also easily complete the paper changing work, avoiding the problem that users without experience, without instructions or guidance from others, and individual users are not clear about the position of the paper adding window and cannot complete the operation of adding paper. The user operation is simple and convenient, and there is no need to look up the instruction manual.

[0026] Advantages compared to existing technologies:

[0027] 1. The device for automatically prompting that paper is out of stock is configured such that when paper is out of stock in a paper box, the ejection spring pushes up the support plate, causing the first conductor to be clamped between the gear teeth on the bevel gear, and the bevel gear stops rotating; at the same time, the first conductor contacts the second conductor, the internal circuit is turned on, triggering the generation of an electrical signal, and then triggering the reaction of the electromagnet, so that the paper box is ejected as a whole to prompt the user the position of the paper adding window; the entire paper changing process only requires the user to insert paper from the paper adding window, and the pop-up of the paper box prompts the user the position of the paper adding window, so that users without basic knowledge can easily complete the paper changing work, avoiding the problem that users without experience, without instructions or guidance from others, and individual users are not clear about the position of the paper adding window and cannot complete the operation of adding paper, and the user operation is simple and convenient, and there is no need to look up the instructions.

[0028] 2. The present invention provides a device for automatically prompting that paper is out of print by arranging an ejection spring under a support plate and an inclined gear above the support plate. When there is paper in a paper box, the ejection spring pushes up the support plate and pushes the paper upward, so that the paper fits the inclined gear. The rotation of the inclined gear drives the paper to move into the printer, thereby speeding up the paper printing process.

[0029] 3. In the device for automatically prompting paper shortage of the present invention, the electromagnets installed on the paper cassette baffle and the inner wall of the corresponding printer main body are AC electromagnets. By utilizing the hysteresis effect inside the AC electromagnets, the paper cassette is in a slow state of popping out and retracting through the electromagnets, preventing harm to the user replacing the paper. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0031] Figure 1 It is a three-dimensional structure schematic diagram of the internal components when the device for automatically prompting paper shortage provided by the present invention is in the pulled-open state;

[0032] Figure 2 It is a three-dimensional structure schematic diagram of the device for automatically prompting paper shortage provided by the present invention in the pulled-open state;

[0033] Figure 3 It is a three-dimensional structure schematic diagram of the device for automatically prompting paper shortage provided by the present invention in the working state;

[0034] Figure 4 It is a partial sectional structure schematic diagram of the right view of the internal components when the device for automatically prompting paper shortage provided by the present invention is in the pulled-open state;

[0035] Figure 5 It is a three-dimensional structure schematic diagram of the internal components when the device for automatically prompting paper shortage provided by the present invention is in the working state;

[0036] Figure 6 It is a top view structure schematic diagram of the internal components when the device for automatically prompting paper shortage provided by the present invention is in the working state;

[0037] Figure 7 It is a sectional structure schematic diagram of the top view of the device for automatically prompting paper shortage provided by the present invention;

[0038] Description of the reference numerals:

[0039] 1. Printer main body; 11. Accommodating cavity; 12. Groove; 2. Paper tray; 21. Paper tray bottom plate; 22. Paper tray baffle; 23. Side plate; 24. Outer wall; 3. Locking member; 31. First gear; 311. Second conductor; 32. Support plate; 321. First conductor; 322. Ejecting spring; 33. Support block; 331. Through groove; 34. Rotating shaft; 4. Traction assembly; 41. Telescopic spring; 42. Electromagnet; 5. Power assembly; 51. Connecting rod; 52. Stepper motor. Detailed implementation manner

[0040] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention. Embodiment 1

[0041] Please refer to Figures 1-5 , the present invention provides a technical solution: an automatic paper shortage prompting device, including: a printer main body 1 and internal components;

[0042] The internal components include a paper tray 2, a locking member 3, a traction assembly 4 and a power assembly 5;

[0043] As Figure 3 shown, the paper tray 2 includes a paper tray bottom plate 21, a paper tray baffle 22, an outer wall 24 and a side plate 23;

[0044] The paper tray baffle 22 is arranged on the inner side of the paper tray 2 close to the printer main body 1 and is fixedly connected to the paper tray bottom plate 21, and the side plate 23 is fixedly connected to the printer main body 1; the outer wall 24 is fixedly installed on the paper tray bottom plate 21; the paper tray bottom plate 21 is slidable inside the printer main body 1;

[0045] The side plate 23 is movably connected to the paper tray bottom plate 21, and the side plate 23 can slide on the paper tray bottom plate 21.

[0046] The printer main body 1 is provided with an accommodating cavity 11, grooves 12 are arranged on both sides of the accommodating cavity, the grooves 12 are fitted with the paper tray baffle 22, and the paper tray 2 is inserted into the accommodating cavity 11 inside the printer main body 1;

[0047] The locking member 3 is arranged above the paper tray bottom plate 21, and the locking member 3 is connected to the side plate 23 of the printer paper tray;

[0048] The locking member 3 includes a first gear 31, a support plate 32, a support block 33 and a rotating shaft 34. The support plate 32 is arranged above the bottom plate 21 of the paper box. The first gear 31 is arranged above the support plate 32. A support block 33 is movably installed above the bottom plate 21 of the paper box. A through groove 331 is arranged in the support block 33 in its length direction. One end of the support plate 32 close to the support block 33 is provided with a rotating shaft 34. The rotating shaft 34 is rotatably connected with the support block 33 and is inserted into the interior of the through groove 331. The support plate 32 is rotatably connected with the support block 33 through the rotating shaft 34;

[0049] The traction assembly 4 includes a telescopic spring 41 and an electromagnet 42. The telescopic spring is installed on one side of the paper box baffle 22 close to the printer main body 11. One end of the telescopic spring 41 is fixedly connected with the paper box baffle 22, and the other end is fixedly connected with the inner wall of the printer main body 1;

[0050] Specifically, as Figure 4 shown, the bottom plate 21 of the paper box and the paper box baffle 22 are slidable in the accommodating cavity 11; when the paper box is in the pulled-out state, the bottom plate 21 of the paper box, the paper box baffle 22 and the traction assembly 4 will slide out along the accommodating cavity 11, and the rest of the structure remains in the original state.

[0051] On the upper side of one end of the support plate 32 close to the first gear 31, a first conductor 321 is installed;

[0052] The first gear 31 is set as a helical gear, and a second conductor 311 is arranged on the side wall of the tooth of the helical gear;

[0053] Specifically, when the printing paper is used up, there is no gap between the first conductor 321 and the second conductor 311; the second conductor 311 can be clamped between the teeth of the helical gear, so that the helical gear stops rotating.

[0054] The voltage connected to the first conductor 321 and the voltage connected to the second conductor 311 are low voltages; the low voltage is designed such that when there is only one piece of paper left in the paper box, the voltage between the first conductor 321 and the second conductor 311 cannot break down the paper to form a conductive path;

[0055] In an optional implementation manner, the low voltage is designed as 6V.

[0056] As Figure 3 shown, the helical gear is connected to a stepping motor 52 through a connecting rod 51. The stepping motor 52 drives the helical gear to rotate counterclockwise. The rotation of the helical gear will drive the paper to move into the printer, accelerating the paper printing work.

[0057] An electromagnet 42 is provided on the inner wall of the paper box baffle 22 and the corresponding printer main body 1. When the electromagnet 42 is energized, a repulsive reaction will occur. When the paper box 2 is in the working state, the telescopic spring 41 is in a relaxed state. When the paper box 2 is in the pulled-out state and the electromagnet 42 is energized, the repulsive reaction of the electromagnet 42 will push out the paper box 2, causing the telescopic spring 41 to be in a stretched state.

[0058] A jacking spring 322 is provided at the bottom of the side of the support plate 32 close to the first gear 31. The jacking spring 322 is fixedly installed on the paper box bottom plate 21 and is used to jack up the support plate 32 to move upward.

[0059] In a feasible implementation manner, the electromagnet 42 installed on the inner wall of the paper box baffle 22 and the corresponding printer main body 1 is an AC electromagnet.

[0060] The design principle of the present invention lies in:

[0061] The jacking spring 322 inside the locking member 3 urges the second conductor 311 to move towards the first conductor 321. The internal control circuits of the first conductor 321 and the second conductor 311 are connected, the circuit is turned on, and the electromagnet 42 plays a role to push out the paper box 2. When the paper blocks the conduction of the circuit, the electromagnet 42 does not play a role, and the telescopic spring 41 in the traction assembly 4 plays a role, and the paper box 2 is retracted. The customer controls the state of the jacking spring 322 by putting paper into the paper box 2, and thus controls the telescoping of the paper box 2.

[0062] Specifically: when there is paper inside the paper box 2, while the jacking spring 322 jacks up the support plate 32, it will also jack up the paper to move closer upward. The paper fits against the helical gear, and the rotation of the helical gear will drive the paper to move into the printer, accelerating the paper printing work.

[0063] When there is a lack of paper inside the paper box 2, the ejecting spring 322 jacks up the support plate 32, causing the first conductor 321 to be clamped between the teeth on the helical gear, and the helical gear stops rotating; at the same time, the first conductor 321 comes into contact with the second conductor 311, the internal circuit is conducted, triggering the generation of an electrical signal, and then triggering the reaction of the electromagnet 42. The paper box baffle 22 and the electromagnet 42 on the inner wall of the corresponding printer main body 1 generate a repulsive reaction, ejecting the paper box 2 as a whole to prompt the user of the position of the paper adding window; when the user inserts the paper through the paper adding window, the weight of the paper will slightly press down the ejecting spring 322 at the lower part of the support plate 32, and the support plate 32 drives the first conductor 321 to move downward; the first conductor 321 is disconnected from the second conductor 311, the internal circuit is disconnected, the electrical signal disappears, the electromagnet 42 is powered off, and the telescopic spring 41 on the paper box baffle 22 contracts. The electromagnet 42 uses an alternating current electromagnet, and the paper box 2 moves slowly inward as a whole; during the slow inward movement of the paper box 2, it will drive the paper to pass through the position where the first conductor 321 is clamped between the teeth on the helical gear. When the paper box 2 moves to the appropriate position, the helical gear continues to rotate, and the printer starts to run normally. For the entire paper replacement process, the user only needs to insert the paper through the paper adding window, and the ejection of the paper box 2 prompts the user of the position of the paper adding window. Even novice users can easily complete the paper replacement work, avoiding the problem that users without experience, without a manual or the guidance of others, do not know the position of the paper adding window and cannot complete the operation of adding paper. The user operation is simple and convenient, and there is no need to search for a manual.

[0064] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic paper shortage prompting device, characterized in that: The device for automatically prompting paper shortage includes: a printer main body (1) and internal components; The internal components include a paper tray (2), a locking member (3), and a traction component (4); The paper tray (2) includes side plates (23), a paper tray baffle (22), and a paper tray bottom plate (21); the paper tray bottom plate (21) is slidable inside the printer main body (1); The locking member (3) includes a first gear (31), a support plate (32), a support block (33), and a rotating shaft (34). The support plate (32) is arranged above the paper tray bottom plate (21), the first gear (31) is arranged above the support plate (32), and a support block (33) is movably installed above the paper tray bottom plate (21); the support plate (32) is rotatably connected to the support block (33) through the rotating shaft (34); A first conductor (321) is installed on the upper side of one end of the support plate (32) close to the first gear (31); The first gear (31) is set as a helical gear, and a second conductor (311) is arranged on the side wall of the teeth of the helical gear; the second conductor (311) can be clamped between the teeth of the helical gear; A top spring (322) is arranged at the bottom of one side of the support plate (32) close to the first gear (31), and the top spring (322) is fixedly installed on the paper tray bottom plate (21); The traction component (4) includes a telescopic spring (41) and an electromagnet (42), and the telescopic spring is installed on one side of the paper tray baffle (22) close to the printer main body 1 (1); An electromagnet (42) is arranged between the paper tray baffle (22) and the inner wall of the corresponding printer main body (1). When the electromagnet (42) is energized, a repulsive reaction will occur; when the paper tray (2) pops out, the telescopic spring (41) is in a relaxed state; The voltages connected to the first conductor (321) and the second conductor (311) are low voltages; the low voltage is designed to be unable to break through a single layer of paper to form a conductive path; the printer main body (1) is provided with a receiving cavity (11), and the paper tray (2) is inserted into the receiving cavity (11) inside the printer main body (1); when the paper tray is in the pulled-out state, the paper tray bottom plate (21), the paper tray baffle (22), and the traction component (4) will slide out along the receiving cavity (11), and the rest of the structure remains in its original state; The device for automatically prompting paper shortage further includes a power component (5); the power component (5) includes a connecting rod (51) and a stepping motor (52), and the helical gear is connected to the stepping motor (52) through the connecting rod (51).

2. The automatic paper shortage prompting device according to claim 1, characterized in that: The electromagnet (42) installed between the paper tray baffle (22) and the inner wall of the corresponding printer main body (1) is an alternating current electromagnet.

3. The automatic paper shortage prompting device according to claim 1, characterized in that: Grooves (12) are arranged on both sides of the receiving cavity, and the grooves (12) are fitted with the paper tray baffle (22).

4. The automatic paper shortage prompting device according to claim 3, characterized in that: The side plate (23) is movably connected to the bottom plate (21) of the paper box, and the side plate (23) can slide on the bottom plate (21) of the paper box; the bottom plate (21) of the paper box and the baffle (22) of the paper box can slide in the accommodating cavity (11).

5. The automatic paper shortage prompting device according to claim 1, characterized in that: The stepping motor (52) drives the helical gear to rotate counterclockwise.

6. The automatic paper shortage prompting device according to claim 1, characterized in that: A through groove (331) is provided in the support block (33) in its length direction. One end of the support plate (32) close to the support block (33) is provided with a rotating shaft (34). The rotating shaft (34) is rotatably connected to the support block (33) and is inserted into the through groove (331).

7. The automatic paper shortage prompting device according to claim 1, characterized in that: The low voltage is designed to be 6V.

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