A paper roll end detection structure with a posture sensor and a printer

Abstract

The utility model provides a cooperation posture sensing's paper roll use up detection structure and printer, including paper bin, detection module and control module, the detection module includes fixed base, adjusting assembly, reset piece and detection piece, the fixed base is opposite fixed in paper bin bottom, adjusting assembly can swingly assemble on fixed base and has a contact head for contacting paper roll, detection piece is used for detecting the position of adjusting assembly and exports paper roll state signal, control module electric connection detection piece, and is provided with posture detection unit on control module, is used for detecting the direction of placing printer, the utility model through contact head resistance paper roll and reset piece pure mechanical structure, gets rid of the dependence of the light coupling, avoids the misjudgment caused by paper roll scattering, installation deviation, through posture detection unit simultaneously, ensures only when paper roll use up detection structure is in the available state to remind the user, greatly promotes user experience and the reliability of detection.

Description

Technical Field

[0001] This utility model relates to the technical field of printers, and in particular to a paper roll exhaustion detection structure and printer that works in conjunction with an attitude sensor. Background Technology

[0002] In the printer industry, existing technologies for detecting the remaining paper roll (whether the paper roll is about to run out) generally employ through-beam photocoupler reflective detection devices. Specifically, the through-beam photocoupler emits light and receives the light reflected from the paper roll surface to determine the remaining paper roll status. When a reflected signal indicating that the paper roll is about to run out is detected, the through-beam photocoupler sends a signal back to the printer's main control system, thereby triggering a paper out warning (such as the paper out warning light illuminating).

[0003] However, the aforementioned prior art has the following significant drawbacks: 1. This detection method relies on the light reflection characteristics of the paper roll. If the paper roll is unrolled, the intensity and propagation path of the reflected light will change abnormally, causing the photocoupler to receive incorrect reflection information, which can easily lead to the misjudgment that "the paper roll is about to run out".

[0004] 2. Printers have multiple placement and paper output directions (such as "front output" and "top output"), but the existing layout of the photoelectric coupler reflective detection device can only adapt to a single placement direction (for example, it only adapts to the bottom detection layout in the "front output" state). When the printer is in other directions (such as the top output state), the paper roll cannot effectively cooperate with the detection device (the paper roll cannot trigger the detection logic), but it will cause the paper out warning light to remain lit, resulting in the problem of "there is still paper left but falsely reporting a paper out", which cannot meet the functional requirement of printers to stably detect the paper roll status in different directions.

[0005] In summary, the existing paper roll detection technology for printers still falls short of meeting the requirements of practical applications in terms of reliability and orientation adaptability, and urgently needs improvement.

[0006] In view of this, the inventor has specifically designed a paper roll exhaustion detection structure and printer that work in conjunction with attitude sensing, and this invention is thus derived. Utility Model Content

[0007] To solve the above problems, the technical solution of this utility model is as follows: A paper roll exhaustion detection structure that works in conjunction with attitude sensing includes a paper tray, a detection module, and a control module; The paper hopper is used to hold paper rolls; The detection module includes a fixed base, an adjustment component, a reset component, and a detection component. The fixed base is fixed to the bottom of the paper tray. The adjustment component is oscillatingly mounted on the fixed base and has a contact head for contacting the paper roll. The reset component is used to generate energy storage when the adjustment component is oscillating under the pressure of the paper roll, and to drive the adjustment component to reset when the pressure of the paper roll on the contact head disappears. The detection component is used to detect the position of the adjustment component and output a paper roll status signal. The control module is electrically connected to the detection device, and the control module is equipped with an attitude detection unit for detecting the orientation of the printer.

[0008] Preferably, the detection element is a position sensor or a micro switch.

[0009] Preferably, the attitude detection unit includes a tilt sensor or a circuit module for detecting the printer's attitude.

[0010] Preferably, the system further includes a reminder device electrically connected to the control module, the reminder device being in a non-reminder state when the detector is touched and triggered, and in a reminder state when the detection state is released.

[0011] Preferably, the reminder device is a reminder light, which illuminates when the detector transmits a signal that the paper is nearly used up and the printer is in a preset orientation.

[0012] Preferably, the contact head includes a first contact located at the end of the adjustment assembly away from its swing axis and a second contact located at the end of the adjustment assembly close to its swing axis.

[0013] Preferably, the first contact is shaped like a frustum, and the second contact is shaped like a cross.

[0014] Preferably, the extension position of the first contact exceeds the farthest extension position of the second contact.

[0015] Preferably, the device further includes several width adapters detachably connected to the contact head, wherein the width adapters are provided with extended contacts adapted to the shape of the contact head to replace the contact head and achieve adaptation to paper rolls with smaller widths.

[0016] This utility model also provides: A printer includes the aforementioned paper roll exhaustion detection structure in conjunction with an attitude sensor.

[0017] The beneficial effects of this utility model are as follows: This utility model relies on a cooperative structure of "contact head directly abutting the axial sidewall of the paper roll + continuous energy storage of the reset component" to achieve a purely mechanical paper roll exhaustion judgment: the contact head always maintains effective physical contact with the paper roll, and the reset component ensures that the adjustment component stably triggers the detection component. Compared with the detection method of through-beam optical coupler that relies on light reflection, it can completely avoid signal misreading caused by partial paper roll scattering or installation deviation, and has a more stable and accurate status monitoring capability.

[0018] Furthermore, this invention uses the attitude detection unit of the control module to identify the printer's orientation in real time. When the printer is detected to be in a non-preset orientation (such as the paper output orientation above), the attitude detection unit will trigger a corresponding reminder and send a "direction error" warning signal to the user. This clearly informs the user that the current orientation does not meet the working requirements of the detection module, avoiding the problem in the prior art where "the orientation error causes the detection module to fail without any warning, leading the user to misjudge the equipment as faulty or the paper roll as empty." This guides the user to adjust the orientation in a timely manner, ensuring that the detection module can function normally.

[0019] This invention, on the one hand, relies on a purely mechanical structure where the contact head directly abuts against the axial sidewall of the paper roll and the reset component continuously stores energy to determine the paper roll status. The contact head always maintains effective physical contact with the paper roll, and the reset component ensures that the adjustment component stably triggers the detection component. This completely eliminates the dependence on light reflection in existing through-beam photocouplers and completely avoids signal misreading caused by partial paper roll spread-out or installation deviations, thus improving monitoring stability and accuracy. On the other hand, the control module's attitude detection unit identifies the printer's orientation in real time, ensuring that the user is only alerted when the paper roll is depleted and the detection structure is in a usable state, greatly improving the user experience and the reliability of detection. Attached Figure Description

[0020] The accompanying drawings, which are provided to further illustrate the present invention and constitute a part of the present invention, illustrate exemplary embodiments of the present invention and are used to explain the present invention, but do not constitute an undue limitation of the present invention.

[0021] in: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a block diagram illustrating the connection principle of this utility model; Figure 3 This is a schematic diagram of the overall structure of the detection module in this utility model; Figure 4 This is an exploded structural diagram of the detection module in this utility model; Figure 5 This is a partial structural schematic diagram highlighting the detection element in this utility model; Figure 6This is a side view of the detection module in this utility model. Figure 7 This is a partial cross-sectional view of the width adapter in this utility model; Figure 8 This is a partial cross-sectional view of the fixed base in this utility model; Figure 9 This is a circuit schematic diagram of the present invention used to realize angle detection; Figure 10 This is a circuit diagram of the paper shortage detection system in this utility model; Figure 11 This is a schematic diagram illustrating the changes in the usage state of this utility model; Figure 12 This is a schematic diagram showing the usage status of different models of width adapters in this utility model; Figure 13 This is a schematic diagram of the front paper output state of the printer in this utility model; Figure 14 This is a schematic diagram of the paper feeding state of the printer in this utility model.

[0022] Label Explanation: 100. Paper tray; 120. Third clearance groove; 200. Detection module; 210. Fixing base; 211. Support; 212. Installation area; 213. Second clearance groove; 220. Adjustment component; 221. Contact head; 222. Swing arm; 223. First contact; 2231. First guide surface; 2232. Second guide surface; 2233. Guide groove; 2234. Slot; 224. Second contact; 2241. Third guide surface; 2242. Angle 230, Reset component; 240, Detector component; 241, Physical contact; 300, Control module; 400, Reminder device; 500, Paper roll; 510, Central paper tube; 520, Printing paper; 600, Width adapter; 610, Adaptor part; 611, First extension contact; 612, Second extension contact; 613, Connecting part; 620, Assembly part; 621, Guide rib; 622, Buckling part; 630, Positioning rib; 700, Attitude detection unit. Detailed Implementation

[0023] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model. Example 1

[0024] Please see Figures 1 to 14This is a paper roll exhaustion detection structure in conjunction with attitude sensing, which is the preferred embodiment of the present utility model. It includes a paper tray 100, a detection module 200, a control module 300, and an alert device 400 electrically connected to the control module 300. First, in this embodiment, the paper tray 100 has a receiving cavity (not shown in the figure) for accommodating paper rolls 500 of different widths. The paper roll 500 referred to in this embodiment includes a central paper tube 510 and printing paper 520 arranged around the central paper tube 510. Figure 11 , 12 Initially, the printing paper 520 at the bottom of the paper roll 500 contacts the bottom of the paper tray 100. Since the paper tray 100 has no corresponding fixing measures for the central paper tube 510, as the printing process continues, the printing paper 520 is gradually consumed, and the thickness of the printing paper 520 surrounding the central paper tube 510 continuously decreases. Therefore, the height of the central paper tube 510 also continuously decreases. Based on this, the following structural description will be carried out: In this embodiment, the detection module 200 includes a fixed base 210, an adjustment component 220, a reset component 230, and a detection component 240. The fixed base 210 is fixed to the bottom of the paper tray 100. Specifically, the fixed base 210 is set at the bottom of the paper tray 100 based on the placement plane of the paper tray 100 (i.e., bottom detection for top-output paper type printers and bottom detection for front-output paper type printers). The adjustment component 220 is swayably mounted on the fixed base 210 and has a contact head 221 for contacting the paper roll 500. The reset component 230 is used to generate energy storage when the adjustment component 220 is squeezed and swayed by the paper roll 500, and to drive the adjustment component 220 to reset when the squeezing force of the paper roll 500 on the contact head 221 disappears. The detection component 240 is used to detect the position of the adjustment component 220 and output the status signal of the paper roll 500. Specifically, the fixed base 210 is in the shape of a square frame, and a support part 211 is formed on one side of the fixed base 210. The support part 211 and the fixed base 210 enclose a mounting area 212 for mounting the adjustment component 220. The adjustment component 220 is in the shape of a long plate, and two parallel swing arms 222 extend from its upper end. The swing arms 222 are hinged to the upper side of the mounting area 212, so that the adjustment component 220 can swing back and forth within the limited range of the mounting area 212.

[0025] Furthermore, the adjustment component 220 extends downward beyond the fixed base 210, and the contact head 221 includes a first contact 223 protruding in a direction perpendicular to the paper tray 100 along this position and a second contact 224 protruding in a direction toward the paper tray 100 along the interior of the mounting area 212. The fixed base 210 is provided with a second clearance groove 213 for the second contact 224 to pass through.

[0026] In this embodiment, the extension position of the first contact 223 extends beyond the extension edge of the second contact 224, and the first contact 223 is generally formed into a shape similar to a frustum. A first guide surface 2231 and a second guide surface 2232 are formed at the end of the first contact 223, which are staggered vertically. The second contact 224 is generally formed into a cross shape, and an inclined third guide surface 2241 is formed at its end.

[0027] Furthermore, in this embodiment, the reset member 230 is a spring, which can also be replaced with a compression spring elastic sheet as needed. The spring is movably disposed in the installation area 212, with one end of the spring contacting the inner side of the support part 211 and the other end contacting the end face of the adjustment component 220. Thus, based on the support part 211, it provides elastic support force for the first contact 223 and the second contact 224 on the adjustment component 220, so that the first contact 223 and the second contact 224 swing around their rotation axis to a position close to the paper tray 100.

[0028] In order to coordinate with the swing of the first contact 223 and the second contact 224 and to cooperate with the paper roll 500, the side wall of the paper compartment 100 is provided with a third clearance groove 120 for the first contact 223 and the second contact 224 to pass through.

[0029] In this embodiment, the detection element 240 is electrically connected to the control module 300. The control module 300 is a PCBA control circuit board used to detect the swing state of the adjustment component 220 and transmit signals to the control module 300.

[0030] Specifically, in this embodiment, the detection element 240 is a micro switch, or a trigger sensor or position sensor can be selected as needed. It is triggered when the trigger end is set in the installation area 212 and is in contact with the adjustment component 220. Thus, when the first contact 223 contacts the axial side of the paper roll 500, the adjustment component 220 swings away from the paper tray 100. At this time, the spring is compressed and the end face of the adjustment component 220 contacts the physical contact 241 of the micro switch. At this time, the control module 300 receives the trigger signal of the micro switch and determines that the paper roll 500 is in a sufficient state and does not need to be replaced. When the paper roll 500 is nearly exhausted, the central paper tube 510 of the paper roll 500 continuously descends until its central control part is aligned with the position of the first contact 223. At this point, the first contact 223 loses its original support and swings into the hollow part of the central paper tube 510 under the action of the spring. The adjusting component 220 disengages from the physical contact 241 of the micro switch. After losing the trigger signal of the micro switch, the control module 300 makes another judgment: the paper roll 500 is in a state of being about to run out and needs to be replaced in time.

[0031] Specifically, the reminder device 400 electrically connected to the control module 300 is at least one of a reminder light or a speaker unit. In this embodiment, it is a reminder light. When the detector 240 is touched and triggered, it is in a non-reminder state, and the reminder light is off or in a green state. When the detection state of the detector 240 is released, the reminder light is on or in a red state (a single-color or dual-color reminder light can be selected as needed), thereby helping the user to judge the current usage status of the paper roll 500.

[0032] Furthermore, the contact head 221 of the adjustment component 220 is detachably equipped with a width adapter 600 adapted to different paper widths, so as to realize the detection and adaptation of paper rolls 500 of different widths. In this embodiment, the width adapter 600 includes three structures with different extension distances, which respectively adapt to three commonly used paper rolls 500 with different widths of 50mm, 58mm, and 80mm. Figure 12 The document shows a reference for the usage status of two different width adapters, 50mm and 80mm.

[0033] In this embodiment, the width adapter 600 includes an adapter part 610 for contacting the axial sidewall of the paper roll 500 and an assembly part 620 for assembling with the contact head 221 of the adjustment assembly 220. The assembly part 620 is provided with a guide rib 621, and the first contact head 223 is provided with a guide groove 2233 that is adapted to the guide rib 621. The width adapter 600 is pre-assembled by the cooperation between the guide groove 2233 and the guide rib 621.

[0034] Specifically, in this embodiment, the width adapter 600 is provided with an extension contact that is adapted to the shape of the contact head 221 to replace the contact head 221 and achieve adaptation to the paper roll 500 with a smaller width. The adapter part 610 (extension contact) includes a first extension contact 611, a second extension contact 612 that are respectively opposite to the first contact head 223 and the second contact head 224, and a connecting part 613 that fixes the first extension contact 611 and the second extension contact 612. The assembly part 620 is disposed on the side of the first extension contact 611 and the second extension contact 612 facing the adjustment component 220. In this embodiment, the guide groove 2233 is planar.

[0035] Furthermore, a pair of guide ribs 621 are provided and distributed on both sides of the assembly part 620. The ends of the two guide ribs 621 facing each other (and the inner side of the guide ribs 621) form a snap-fit ​​part 622. The guide groove 2233 is provided with a snap-fit ​​groove 2234 that engages with the snap-fit ​​part 622.

[0036] In this embodiment, the guide groove 2233 is a plane, and two guide grooves 2233 are symmetrically arranged on both sides of the first contact 223. The inner side of the guide rib 621 is provided with a plane that matches the guide groove 2233, so that the guide groove 2233 guides the guide rib 621. After the snap-fit ​​part 622 and the snap-fit ​​groove 2234 are snapped together, the guide rib 621 will be attached to the guide groove 2233. The plane is used to restrict the rotation between the adapter part 610 and the first contact 223, so that the width adapter 600 and the adjustment component 220 are stably connected.

[0037] Furthermore, the adapter portion 610 on the side of the second extended contact 612 extends to form four positioning ribs 630 that match the cross-shaped structure of the second contact 224. The four positioning ribs 630 can be inserted into the four corner slots 2242 of the second contact 224 respectively to form a stable limit.

[0038] With the above structure, the width adapter 600 can be quickly assembled with the first contact 223 and the second contact 224, making it convenient for users to replace the width adapter 600 according to different paper width requirements.

[0039] The control module 300 is electrically connected to the detection element 240, and the control module 300 is equipped with an attitude detection unit 700 for detecting the orientation of the printer.

[0040] Preferably, the attitude detection unit 700 includes a tilt sensor or a circuit module for detecting the printer's attitude. In this embodiment, it is a tilt sensor with a Hall effect angle, which is electrically connected to the control module 300.

[0041] In this embodiment, the circuit principle of the attitude detection unit 700 and the paper shortage detection is as follows: 1. Angle detection circuit (Angle_Sensor) The core of this circuit is to detect the angle through sensor V1 and convert it into an analog voltage signal Angle_Sensor, which can then be read by the ADC port of control module 300.

[0042] The sensor (V1-CSX450) is the core component for angle detection. It is a variable resistance or current output angle sensor, such as a Hall effect angle sensor or a magnetoresistive sensor. When the printer's posture (i.e., angle) changes, the sensor's internal resistance or output current changes accordingly.

[0043] Voltage divider network: The main body of the circuit is a voltage divider structure consisting of R19 (1KΩ), R17 (1KΩ) and sensor V1 connected in series. The Angle_Sensor signal is drawn from the connection point of R19 and R17.

[0044] As the angle changes, R_V1 changes, causing the output voltage of the Angle_Sensor to change linearly or non-linearly. The control module 300 can calculate the current specific angle by acquiring this voltage value.

[0045] Power supply filtering: The +3.3V power supply powers the voltage divider network through R16 (10KΩ). R16 serves to limit current and provide isolation.

[0046] C13 (1nF) is connected in parallel with R16. Its function is to provide a low impedance path for the power supply at high frequencies, which helps to improve the transient response and stability of the power supply.

[0047] C19 (100nF) is a filter capacitor connected between the Angle_Sensor output and ground. Its main function is to filter out high-frequency noise and glitches in the sensor signal, ensuring that the ADC of the control module samples a stable and clean voltage signal.

[0048] Therefore, the angle detection circuit uses a voltage divider network to convert the physical changes (such as resistance changes) of the angle sensor into a smooth analog voltage signal, thus achieving accurate sensing of the printer's posture.

[0049] 2. Paper detection circuit (Paper-Exhaust#) This part of the circuit is used to detect whether the paper is used up. It generates a high / low level signal by the state of an external sensor (a micro switch in this embodiment, connected to CN9) to notify the control module whether there is paper.

[0050] Circuit structure and working principle: External Sensor Interface (CN9): This is a 2-pin connector for connecting an external paper sensor. Pin1 is the signal line, and Pin2 is grounded. In this embodiment, the paper sensor is a microswitch.

[0051] Pull-up resistor (R63): R63 (10KΩ) is a pull-up resistor that connects the Paper-Exhaust# signal line to +3.3V. Therefore, in the default state (i.e., when the microswitch is not triggered), the Paper-Exhaust# signal line is pulled high to the 3.3V level.

[0052] Work logic: Paper-on state: In the paper-on state, the physical contact 241 of the microswitch is pressed by the adjusting component 220 and is in the triggered state. Its internal switch is closed, connecting the Paper-Exhaust# signal line to ground through connector CN9. At this time, the signal line voltage is pulled down to a low level close to 0V. The control module 300 detects this level change and knows that the paper is on.

[0053] Paperless state: When there is no paper, the microswitch loses the lateral support of the paper roll 500 and swings into the hollow part of the central paper tube 510 under the action of the spring. Therefore, the physical contact 241 of the microswitch loses the pressure of the adjusting component 220 and is in a non-triggered state, and its internal switch is open. At this time, there is no path to ground, and the Paper-Exhaust# signal line remains at a high level (approximately 3.3V) due to the presence of R63.

[0054] Protection and Filtering: Current limiting resistor (R64): R64 (1KΩ) is connected in series in the signal path. When the sensor triggers and causes the signal line to ground, it, together with R63, limits the total current of the circuit (approximately 3.3V / (10K+1K)≈0.3mA), thus protecting the I / O port of the control module 300.

[0055] Filter capacitor (C59): C59 (100nF) is used for filtering and debouncing. Especially when using a mechanical switch as a sensor, the switch will generate mechanical jitter at the moment of closing or opening, causing the level to jump rapidly and multiple times. C59 and R63 form an RC low-pass filter, which can effectively filter out this jitter and ensure that the control module 300 receives a stable and single level transition.

[0056] ESD Protection (D12): D12 (SESLC5VD523-2B) is a TVS diode (transient voltage suppressor). Since CN9 is an external interface, it is easily affected by static electricity (ESD) from the human body. The function of D12 is to quickly conduct and discharge energy to ground in the event of transient high voltage such as static electricity, thereby protecting sensitive chips such as downstream control modules from damage.

[0057] Test point (TP41): TP41 is a test point that allows for direct measurement of the Paper-Exhaust# signal line level using a multimeter or oscilloscope during production or maintenance, for debugging and troubleshooting.

[0058] Therefore, this embodiment uses pull-up resistors and external switching sensors (microswitches) to detect the status, and integrates current limiting, filtering and ESD protection measures to ensure signal reliability and circuit durability.

[0059] The workflow of this utility model is as follows: like Figure 13 As shown, the control module 300 monitors the digital paper roll 500 status signal from Paper-Exhaust# and the analog attitude signal from Angle_Sensor in real time and synchronously. When the control module 300 detects that Paper-Exhaust# is high (indicating that the paper roll 500 is exhausted), it does not immediately trigger an alert, but further checks the signal value of Angle_Sensor. Only when the attitude signal shows that the printer is in a preset orientation that allows the detection module 200 to work normally (e.g., front paper output mode), and the paper roll exhaustion detection structure is in an available state, will the control module 300 finally confirm the paper shortage status and drive the alert device 400 (alert light) to issue an accurate paper shortage alert to the user.

[0060] Conversely, such as Figure 14 As shown, if the printer is not in a preset orientation (e.g., set to top-output mode by the user), even if the Paper-Exhaust# signal indicates a paper shortage due to changes in the mechanical structure's position under gravity, the control module 300 will determine that the current orientation is in top-output mode based on the Angle_Sensor signal. In this case, the control module 300 will keep the paper roll exhaustion detection structure in the off state to avoid false alarms. This ensures that the user is only alerted when the printer is in front-output mode and the paper roll exhaustion detection structure is available, greatly improving the user experience and the reliability of detection.

[0061] In addition, when the top paper output mode is in normal state and the paper roll depletion detection structure is at the bottom of the paper tray, the availability of the paper roll depletion detection structure and the detection content of the attitude detection unit are the opposite of the above situation (that is, in the top paper output mode, the paper roll depletion detection structure is in an available state, and in the front paper output module, the paper roll depletion detection structure is in an unavailable closed state), there is no restriction here. Example 2

[0062] A printer, such as Figure 1 As shown, the paper roll 500 exhaustion detection structure in conjunction with the attitude sensor in Embodiment 1, as well as other core components required by the printer, such as the printing module and the electronic control unit, are existing technologies and will not be described in detail here.

[0063] The beneficial effects of this utility model are as follows: This utility model relies on the cooperative structure of "contact head 221 directly abutting against the axial side wall of paper roll 500 + reset member 230 continuously storing energy" to achieve a purely mechanical paper roll 500 exhaustion judgment: the contact head 221 always maintains effective physical contact with the paper roll 500, and the reset member 230 ensures that the adjustment component 220 stably triggers the detection component 240. Compared with the detection method of through-beam optical coupler that relies on light reflection, it can completely avoid signal misreading caused by partial spread of paper roll 500 or installation deviation, and has a more stable and accurate status monitoring capability.

[0064] Furthermore, this invention uses the attitude detection unit 700 of the control module 300 to identify the printer's orientation in real time. When the printer is detected to be in a non-preset orientation (such as the paper output orientation above), the attitude detection unit 700 will trigger a corresponding reminder, sending an incorrect orientation signal to the user. This clearly informs the user that the current orientation does not meet the working requirements of the detection module 200, avoiding the problem in the prior art where "the incorrect orientation causes the detection module 200 to fail without any prompt, leading the user to misjudge the equipment malfunction or the paper roll 500 to run out." This guides the user to adjust the orientation in a timely manner, ensuring that the detection module 200 can function normally.

[0065] This invention, on the one hand, relies on a purely mechanical structure where the contact head 221 directly abuts against the axial sidewall of the paper roll 500 and the reset component 230 continuously stores energy to determine the state of the paper roll 500. The contact head 221 always maintains effective physical contact with the paper roll 500, and the reset component 230 ensures that the adjustment component 220 stably triggers the detection component 240. This completely eliminates the dependence on light reflection in existing through-beam optocouplers and completely avoids signal misreading caused by partial scattering of the paper roll 500 or installation deviations, improving monitoring stability and accuracy. On the other hand, the control module 300's attitude detection unit 700 identifies the printer's orientation in real time. When the printer is in the paper feeding state, the control module 300 will keep the paper roll depletion detection structure in the off state to avoid false alarms. This ensures that the user is only alerted when the paper roll depletion detection structure is in an available state, greatly improving the user experience and the reliability of detection.

[0066] The present invention has been described above with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A paper roll exhaustion detection structure in conjunction with attitude sensing, characterized in that, It includes a paper tray (100), a detection module (200), and a control module (300); The paper hopper (100) is used to hold paper rolls (500); The detection module (200) includes a fixed base (210), an adjustment component (220), a reset component (230), and a detection component (240). The fixed base (210) is fixed to the bottom of the paper tray (100). The adjustment component (220) is swayably mounted on the fixed base (210) and has a contact head (221) for contacting the paper roll (500). The reset component (230) is used to generate energy storage when the adjustment component (220) is squeezed and swayed by the paper roll (500), and to drive the adjustment component (220) to reset when the squeezing force of the paper roll (500) on the contact head (221) disappears. The detection component (240) is used to detect the position of the adjustment component (220) and output a status signal of the paper roll (500). The control module (300) is electrically connected to the detection unit (240), and the control module (300) is provided with an attitude detection unit (700) for detecting the placement direction of the printer.

2. The paper roll exhaustion detection structure in conjunction with attitude sensing according to claim 1, characterized in that, The detection element (240) is a position sensor or a micro switch.

3. The paper roll exhaustion detection structure in conjunction with attitude sensing according to claim 1, characterized in that, The attitude detection unit (700) includes a tilt sensor or a circuit module for detecting the printer's attitude.

4. The paper roll exhaustion detection structure in conjunction with attitude sensing according to claim 1, characterized in that, It also includes an alerting device (400) electrically connected to the control module (300), the alerting device (400) being in a non-alert state when the detector (240) is touched and triggered, and in an alert state when the touch state of the detector (240) is released.

5. The paper roll exhaustion detection structure in conjunction with attitude sensing according to claim 4, characterized in that, The reminder device (400) is a reminder light. When the detector (240) transmits a signal that the paper is almost used up and the printer is in a preset orientation, the reminder light is turned on.

6. The paper roll exhaustion detection structure in conjunction with attitude sensing according to claim 1, characterized in that, The contact head (221) includes a first contact (223) located at the end of the adjustment assembly (220) away from its swing axis and a second contact (224) located at the end of the adjustment assembly (220) close to its swing axis.

7. The paper roll exhaustion detection structure in conjunction with attitude sensing according to claim 6, characterized in that, The first contact (223) is shaped like a frustum, and the second contact (224) is shaped like a cross.

8. The paper roll exhaustion detection structure in conjunction with attitude sensing according to claim 6, characterized in that, The first contact (223) extends beyond the furthest extension of the second contact (224).

9. The paper roll exhaustion detection structure in conjunction with attitude sensing according to claim 1, characterized in that, It also includes a number of width adapters (600) detachably connected to the contact head (221), the width adapters (600) having extended contacts adapted to the shape of the contact head (221) to replace the contact head (221) for adapting to paper rolls (500) with smaller widths.

10. A printer, characterized in that, Includes a paper roll (500) exhaustion detection structure with attitude sensing as described in any one of claims 1-9.

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