Ink level detection assembly based on Hall sensing

Abstract

An ink level detection assembly based on Hall sensing comprises an ink box and a limiting assembly, ink is located in the ink box, and an ink level is formed in the height direction of the ink box. The limiting assembly is arranged in the ink box, and the limiting assembly and the ink position are arranged in the same direction. The suspension magnet is clamped in the limiting assembly, and the suspension magnet is movably connected with the limiting assembly in the height direction of the ink box. The Hall element is arranged outside the ink box, the Hall element is located at the starting end of the ink position, when ink is located at the starting end of the ink position, the suspension magnet moves to the starting end of the ink position in the height direction of the ink box, and the suspension magnet is arranged right opposite to the Hall element. Through the structure, stable and reliable ink level monitoring is provided.

Description

Technical Field

[0001] The present application relates to the field of printing, and in particular to an ink level detection component based on Hall sensor. Background Art

[0002] Existing ink level detection technologies typically use contact detection methods to determine the liquid level by directly contacting electrodes with the ink. For example, electrode detection detects liquid level changes by observing the contact conductivity between the ink and the electrodes. This technology requires the sensor or components to be in contact with the ink, making it susceptible to ink corrosion, contamination, or sediment interference, resulting in unstable detection results and shortening the device lifespan.

[0003] Another existing non-contact detection method uses a float that moves up and down with the liquid level, indicating the ink level through a mechanical pointer or electronic signal. However, this mechanical structure is complex, and the float may become stuck due to the narrow space in the ink cartridge or ink adhesion, affecting the accuracy and reliability of the detection.

[0004] Therefore, a stable and reliable ink level detection component based on Hall sensor is needed for liquid level monitoring. Utility Model Content

[0005] In view of this, it is necessary to provide an ink level detection component based on Hall sensor for stable and reliable liquid level monitoring to solve the above problems.

[0006] An embodiment of the present application provides an ink level detection component based on Hall sensor, comprising:

[0007] an ink cartridge, wherein ink is located in the ink cartridge and an ink level is formed along a height direction of the ink cartridge;

[0008] A limit assembly is provided in the ink cartridge and is arranged in the same direction as the ink position;

[0009] A suspension magnet is clamped in the limiting assembly and is movably connected to the limiting assembly along the height direction of the ink cartridge;

[0010] The Hall element is arranged outside the ink cartridge and located at the starting end of the ink position. When the ink is located at the starting end of the ink position, the suspension magnet moves along the height direction of the ink cartridge to the starting end of the ink position, and the suspension magnet is arranged opposite to the Hall element.

[0011] In at least one embodiment of the present application, the levitation magnet comprises:

[0012] A first suspension portion is closely connected to the ink cartridge and faces the Hall element;

[0013] a second suspension portion, symmetrically arranged with the first suspension portion and engaged with the limiting assembly;

[0014] The narrowing portion is connected to the first suspension portion and the second suspension portion respectively and is located between the first suspension portion and the second suspension portion. The limiting assembly is engaged with the narrowing portion.

[0015] In at least one embodiment of the present application, the diameter of the floating portion is denoted as A, and the diameter of the narrowed portion is denoted as B, satisfying the relationship:

[0016] A>B.

[0017] In at least one embodiment of the present application, the suspension portion is provided with a placement hole, the placement hole is opened in a direction facing the Hall element, and the suspension magnet further includes a magnet, and the magnet is located in the placement hole.

[0018] In at least one embodiment of the present application, the limiting assembly includes:

[0019] a first clamping strip, arranged in the same direction as the ink level and connected to the ink cartridge; the first suspension portion is clamped in the first clamping strip, the first suspension portion is movably connected to the first clamping strip; the magnet in the first suspension portion and the Hall element are respectively located on opposite sides of the ink cartridge; when the magnet in the first suspension portion is facing the Hall element, the ink is located at the starting end of the ink level;

[0020] The second clamping strip is arranged in the same direction as the ink position and is arranged side by side with the first clamping strip along the length direction of the ink cartridge. The second suspension portion is clamped in the first clamping strip, and the second suspension portion is movably connected to the second clamping strip.

[0021] In at least one embodiment of the present application, the position limiting assembly further includes: a third clip;

[0022] The third clamping strip is arranged in the same direction as the ink position, the third clamping strip is located between the first clamping strip and the second clamping strip, the narrowing portion is clamped in the third clamping strip, and the narrowing portion is movably connected to the third clamping strip;

[0023] The narrowed portion relatively abuts against the first clamping strip and the second clamping strip along the length direction of the ink cartridge.

[0024] In at least one embodiment of the present application, the third clip is engaged with the narrowed portion to form a gap, the diameter of the gap being denoted as C, satisfying the relationship:

[0025] C<B<A.

[0026] In at least one embodiment of the present application, the ink level detection component includes:

[0027] A PCB board is electrically connected to the ink cartridge and the printer, the PCB board being provided with a first interface and a second interface, the first interface and the second interface being located on the same surface of the PCB board;

[0028] The first interface is electrically connected to the printer to send signals;

[0029] The second interface is electrically connected to the CPU to receive and process signals.

[0030] In at least one embodiment of the present application, the Hall element is disposed on the other side of the PCB board and is opposite to the first interface and the second interface.

[0031] In at least one embodiment of the present application, the ink cartridge includes:

[0032] a liquid inlet, communicating with the inside and outside of the ink cartridge;

[0033] An ink extraction tube has one end connected to the ink cartridge and the other end connected to the printer.

[0034] The aforementioned Hall effect sensor-based ink level detection assembly is located inside the ink cartridge via a suspended magnet and moves with ink level changes. When the suspended magnet aligns with the Hall effect element outside the cartridge, an ink low signal is transmitted. A limiter assembly guides the movement of the suspended magnet. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a three-dimensional diagram of the assembly of the ink level detection component based on Hall sensor described in this application;

[0036] Figure 2 This is a left side view of the assembly of the ink level detection component based on Hall sensor described in this application;

[0037] Figure 3 for Figure 2 Cross-section of the middle AA;

[0038] Figure 4 for Figure 2 Cross-section of the middle BB;

[0039] Figure 5 for Figure 3 Cross-section of the middle CC;

[0040] Figure 6 for Figure 3 Cross-section of the middle DD;

[0041] Figure 7 for Figure 3 Cross-section of the middle EE;

[0042] Figure 8This is an exploded view of the assembly of the suspension magnet described in this application;

[0043] Figure 9 This is a front view of the PCB board described in this application;

[0044] Figure 10 A top view of the PCB board described in this application;

[0045] Main component symbols

[0046] 100. Ink level detection component based on Hall sensor; 10. Ink cartridge; 11. Ink; 12. Ink level; 13. Starting end of ink level; 20. Limiting component; 21. First clamping strip; 22. Second clamping strip; 23. Third clamping strip; 30. Suspended magnet; 31. First suspended portion; 32. Second suspended portion; 311. Placement hole; 33. Narrowing portion; 34. Magnet; 40. Hall element; 50. PCB board; 51. First interface; 52. Second interface; 60. Liquid inlet; 70. Ink tube; F1. Height direction of ink cartridge; F2. Length direction of ink cartridge. DETAILED DESCRIPTION

[0047] The embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0048] It should be noted that when a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component. When a component is considered to be "disposed on" another component, it can be directly disposed on the other component or there may be an intermediate component. The terms "top", "bottom", "upper", "lower", "left", "right", "front", "back", and similar expressions used herein are for illustrative purposes only.

[0049] The following embodiments of the present application are described in detail with reference to the accompanying drawings. In the absence of conflict, the following embodiments and features therein may be combined with each other.

[0050] See also Figures 1-10, an embodiment of the present application provides an ink level detection component 100 based on Hall sensing, comprising: an ink cartridge 10, a limiting component 20. The ink 11 is located in the ink cartridge 10, and an ink level 12 is formed along the height direction F1 of the ink cartridge. The limiting component 20 is arranged in the ink cartridge 10, and the limiting component 20 is arranged in the same direction as the ink level 12. The suspension magnet 30 is clamped in the limiting component 20, and the suspension magnet 30 is movably connected to the limiting component 20 along the height direction F1 of the ink cartridge. The Hall element 40 is arranged outside the ink cartridge 10, and the Hall element 40 is located at the starting end 13 of the ink level, wherein when the ink 11 is located at the starting end of the ink level 12, the suspension magnet 30 moves along the height direction F1 of the ink cartridge to the starting end 13 of the ink level, and the suspension magnet 30 is arranged opposite to the Hall element 40.

[0051] Specifically, an ink level detection component 100 based on Hall sensing includes an ink cartridge 10, a limit component 20, a suspension magnet 30 and a Hall element 40. The ink cartridge 10 is used to contain ink 11 and form an ink level 12, providing a stable basis for liquid level changes. The limit component 20 is located in the ink cartridge 10, consistent with the direction of the ink level 12 and constrains the movement of the suspension magnet 30, ensuring that the suspension magnet 30 moves accurately in the height direction. The suspension magnet 30 is clamped in the limit component 20 and moves in the height direction as the ink 11 level changes, corresponding to the position of the ink level 12 in real time. The Hall element 40 is arranged outside the ink cartridge 10 and facing the starting end of the ink level 12. When the ink 11 level drops to the starting end, the suspension magnet 30 moves to the corresponding position. Its magnetic field signal is accurately sensed by the Hall element 40 and outputs an ink 11 insufficient signal. The overall structure effectively avoids corrosion or precipitation interference of the ink 11 through non-contact sensing, and has high precision and high reliability.

[0052] When the ink level 11 drops, the suspension magnet 30 moves down smoothly in the height direction under the guidance of the limit component 20. When the ink level 12 reaches the area facing the Hall element 40, the Hall element 40 detects insufficient ink level 11 through changes in the magnetic field and issues an alarm signal. It can be applied to scenarios such as home printers, industrial inkjet equipment, laboratory liquid monitoring, and medical drug delivery devices. It can monitor the liquid level in real time and accurately to avoid functional interruption caused by insufficient consumables.

[0053] In a specific embodiment, the levitation magnet 30 includes a first levitation portion 31 , a second levitation portion 32 , and a narrowing portion 33 . The first levitation portion 31 is in close contact with the ink cartridge 10 and faces the Hall element 40 .

[0054] The second suspension portion 32 is symmetrically arranged with the first suspension portion 31 and is engaged with the stopper assembly 20. The narrowing portion 33 is connected to the first suspension portion 31 and the second suspension portion 32, respectively, and is located between the first suspension portion 31 and the second suspension portion 32. The stopper assembly 20 is engaged with the narrowing portion 33.

[0055] Specifically, the first suspension portion 31 is tightly connected to the ink cartridge 10 and positioned directly opposite the Hall effect element 40. This design ensures that the suspension magnet 34 accurately triggers the Hall effect element 40 when it moves to the starting point of the ink level 12, generating a stable magnetic field induction. This tight connection not only enhances the reliability of the movement of the magnet 34 but also reduces detection errors caused by shaking or offset. The direct alignment with the Hall effect element 40 further ensures the accuracy of the Hall effect element 40's signal output, thereby improving the sensitivity and accuracy of ink level 12 detection.

[0056] The second suspension portion 32 is symmetrically arranged with the first suspension portion 31 and engages with the stop assembly 20. This design balances the forces acting on the magnet 34 under the buoyancy and gravity of the ink 11 through symmetrical distribution, effectively preventing deviation or tilt and ensuring smooth movement of the magnet 34 along the trajectory of the stop assembly 20. This engagement with the stop assembly 20 provides reliable guidance, ensuring the vertical movement accuracy of the suspension magnet 30 and thus improving the stability of the overall detection system.

[0057] The narrowing portion 33 connects the first and second levitation portions 31 and 32, respectively, and snaps into the stopper assembly 20. This structure ensures the overall rigidity of the magnet 34 while optimizing the contact surface with the stopper assembly 20, reducing friction and thus lowering motion resistance. Furthermore, the design of the narrowing portion 33 prevents sticking and improves the responsiveness of the levitation magnet 30 to changes in the ink 11 level, further enhancing detection accuracy and system reliability.

[0058] The connection and symmetrical design of the first and second suspension sections 31, 32, and the narrowing section 33, combined with the snap-fit ​​connection to the stopper assembly 20, form a stable and flexible suspension structure. This structure can adapt to different liquid level fluctuation scenarios, providing efficient and accurate ink level detection, while also taking into account vibration resistance and durability, making it suitable for a variety of complex working environments.

[0059] In a specific embodiment, the diameter of the floating portion is recorded as A, and the diameter of the narrowing portion 33 is recorded as B, which satisfies the relationship:

[0060] A>B.

[0061] Specifically, the larger diameter A of the suspension portion provides a stable contact area, ensuring that the suspension magnet 30 maintains good balance and uniform force distribution during its floating process within the ink cartridge 10. This larger diameter enables the suspension magnet 30 to more sensitively respond to changes in the ink 11 level, while effectively reducing posture deviation caused by liquid disturbances and avoiding detection errors. This serves to enhance the overall system's anti-interference capabilities and ensure that the suspension magnet 30 can move freely and accurately within the ink cartridge 10.

[0062] The narrowed portion 33 has a small diameter B, meeting the design's precision requirements. Its smaller size enables a secure, low-friction engagement with the stopper assembly 20. The stopper assembly 20 receives the guide channel formed by the narrowed portion 33, providing a defined movement path for the levitation magnet 30. The smaller diameter also optimizes motion resistance, ensuring smooth, non-binding movement of the levitation magnet 30 in the height direction, thereby improving detection response speed.

[0063] The design of the suspension portion diameter A > the narrowing portion 33 diameter B provides the following benefits to the suspension magnet 30 in the overall structure: the larger suspension portion diameter A provides a larger force-bearing area, which helps to resist interference caused by liquid flow or vibration; while the smaller narrowing portion 33 diameter B concentrates the force on the guide card contact, ensuring the accuracy of the guide path.

[0064] A>B enables the suspension magnet 30 to form a "stable suspension + precise guidance" division of labor mode in the ink cartridge 10, avoiding the movement resistance that may be caused by a large contact area, and at the same time reducing the friction when the narrowed part 33 slides, thereby improving the smoothness of movement and the timeliness of detection.

[0065] In a specific embodiment, the suspension portion is provided with a placement hole 311 , which is opened in a direction facing the Hall element 40 . The suspension magnet 30 further includes a magnet 34 , which is located in the placement hole 311 .

[0066] Specifically, the placement hole 311 in the suspension provides an independent cavity structure for installing the magnet 34. This hole design allows the suspension to securely nest the magnet 34, preventing it from falling out or shifting due to liquid disturbance or long-term use. The placement hole 311 is located directly opposite the Hall effect element 40, ensuring that the magnetic field sensing area is accurately aligned with the Hall effect element 40, thereby improving the sensitivity and accuracy of liquid level detection.

[0067] The placement hole 311 effectively fixes the magnet 34, preventing the magnet 34 from shifting and causing detection errors. The placement hole 311 is aligned with the direction of the Hall element 40, ensuring that the magnetic field signal is captured by the Hall element 40 to the maximum extent, thereby improving signal sensing efficiency.

[0068] Placing magnet 34 within the placement hole 311 of the suspension portion forms an integrated suspension magnet 30 assembly. The magnet 34 is positioned directly opposite the Hall effect element 40, allowing the suspension magnet 30 to accurately generate stable changes in magnetic field strength as it moves, which is detected by the Hall effect element 40.

[0069] The stable connection between the magnet 34 and the suspension part ensures that the magnetic field position and direction are fixed, eliminating the detection error caused by magnetic field fluctuations. By providing the placement hole 311, the magnet 34 can be embedded quickly and accurately, simplifying the assembly process.

[0070] A placement hole 311 is provided within the suspension unit, forming a support structure for the magnet 34, allowing the suspension unit and magnet 34 to form a highly integrated functional component. The hole's orientation directly faces the Hall effect element 40, ensuring consistent magnetic sensing between the magnet 34 and the Hall effect element 40. Optimizing the functional distribution of the suspension magnet 30 ensures that the suspension unit can support magnetic field emission, ensuring accurate signal acquisition by the Hall effect element 40.

[0071] Magnet 34 is embedded in placement hole 311, providing uniform force and preventing displacement. The hole wall acts as a limiter for magnet 34, ensuring its stability within the hole. Even if the ink cartridge 10 is subjected to external vibrations, magnet 34 will not deviate from its predetermined position. This enhances the overall stability of the suspended magnet 30, ensuring a consistently accurate magnetic field emission and improving detection reliability and sensitivity.

[0072] The magnet 34 is positioned directly opposite the Hall effect element 40, allowing the suspended magnet 34 to directly transmit signals to the Hall effect element 40 through the magnetic field generated when the liquid level changes. By optimizing the spatial relationship between the magnetic field and the Hall effect element 40, the Hall effect element 40 can efficiently and accurately sense the magnetic field, reducing errors.

[0073] When the ink 11 level is sufficient, the user uses the printer to lower the ink level 12 of the ink 11, and the levitation magnet 30 moves downward accordingly. When the ink 11 level reaches the starting height, the levitation magnet 30 floats on the liquid surface. The magnet 34 faces the Hall element 40 through the placement hole 311 in the levitation part, generating a magnetic field and sending a signal. The system triggers an ink shortage alarm signal, prompting the user to add ink 11.

[0074] In a specific embodiment, the limiting assembly 20 includes: a first clamping strip 21 and a second clamping strip 22. The first clamping strip 21 is arranged in the same direction as the ink position 12, the first clamping strip 21 is connected to the ink cartridge 10, and the first suspension portion 31 is clamped in the first clamping strip 21. The first suspension portion 31 is movably connected to the first clamping strip 21. The magnet 34 in the first suspension portion 31 and the Hall element 40 are respectively located on opposite sides of the ink cartridge 10. When the magnet 34 in the first suspension portion 31 is facing the Hall element 40, the ink 11 is located at the starting end 13 of the ink position. The second clamping strip 22 is arranged in the same direction as the ink position 12, and the second clamping strip 22 is parallel to the first clamping strip 21 along the longitudinal direction F2 of the ink cartridge. The second suspension portion 32 is clamped in the first clamping strip 21. The second suspension portion 32 is movably connected to the second clamping strip 22.

[0075] Specifically, the first retaining bar 21 is positioned within the ink cartridge 10, aligned with the ink level 12, and is fixedly connected to the cartridge 10. Its function is to provide a track-like retaining structure, enabling the first suspended portion 31 to slide along the height of the ink cartridge 10 without shifting or jamming. The first retaining bar 21 prevents the first suspended portion 31 from shifting, ensuring its trajectory remains along the height of the ink cartridge 10. The fixed connection between the first retaining bar 21 and the ink cartridge 10 enhances the overall structural strength and durability of the detection assembly.

[0076] The design of the first suspension portion 31 snapping into the first clip 21 provides a stable, mobile connection, allowing the first suspension portion 31 to slide smoothly within the first clip 21 without interference from external factors. This sliding process ensures that the magnet 34 and the Hall element 40 are aligned, ensuring the accuracy of magnetic field sensing. Stable sliding ensures that the magnet 34 and the Hall element 40 are aligned, improving the accuracy of the Hall sensing signal. This snap-in connection prevents loosening, reduces sliding friction, and increases service life.

[0077] The magnet 34 and the Hall element 40 in the first suspension portion 31 are located on opposite sides of the ink cartridge 10 , respectively. The magnet 34 and the Hall element 40 are distributed on both sides of the ink cartridge 10 , forming a stable magnetic induction path, so that a signal can be triggered when the ink 11 is at the starting end of the ink position 12 .

[0078] The optimized distribution of the positions of the magnet 34 and the Hall element 40 ensures that the magnetic field path is not interfered with by other structures of the ink cartridge 10. The change in the level of the ink 11 is directly reflected to the Hall element 40 through the change in the position of the magnet 34, and the detection sensitivity is high.

[0079] The second clamping strip 22 is disposed in the ink cartridge 10, parallel to the first clamping strip 21 and extending along the length of the ink cartridge 10. This structure provides a limiting track for the second suspension portion 32 and allows it to move within the clamping strip, ensuring the coordinated movement of the two suspension portions.

[0080] The second retaining strip 22 provides a separate track to prevent interference between the two suspended components. Working in conjunction with the first retaining strip 21, it ensures parallel sliding of the two suspended components within the ink cartridge 10, improving overall system coordination and reliability. The interlocking structure between the second retaining strip 22 ensures stable sliding without dislodging, further enhancing the position limiting function and detection accuracy.

[0081] The magnet 34 in the first suspension part 31 is directly opposite to the Hall element 40 to generate a magnetic field. The magnet 34 in the second suspension part 32 is used to balance the weight of the magnet 34 in the first suspension part 31 .

[0082] In one specific embodiment, the position-limiting assembly 20 further includes a third clamping strip 23. The third clamping strip 23 is disposed in the same direction as the ink level 12 and is positioned between the first clamping strip 21 and the second clamping strip 22. The narrowing portion 33 is engaged within the third clamping strip 23 and is movably connected to the third clamping strip 23. The narrowing portion 33 abuts against the first clamping strip 21 and the second clamping strip 22 along the longitudinal direction F2 of the ink cartridge.

[0083] Specifically, the third clamping strip 23 is an important component of the limiting assembly 20 , which is arranged in the same direction as the ink position 12 and is located between the first clamping strip 21 and the second clamping strip 22 , and is used to limit the narrowing portion 33 and guide its movement.

[0084] The third retaining strip 23 provides a central stop, ensuring more stable and controllable movement of the narrowed portion 33 along the cartridge's longitudinal direction F2. By adding the third retaining strip 23 between the first retaining strip 21 and the second retaining strip 22, the movement of the narrowed portion 33 is effectively reduced, ensuring accurate ink level 12 detection. The provision of the third retaining strip 23 simplifies the connection design between components while maintaining the stop function, improving the overall compactness of the structure.

[0085] The narrowing portion 33 is a movable component, secured within the third retaining strip 23 by a snap-fit ​​mechanism and maintained in a sliding connection. This provides both position control and relative movement along the cartridge's longitudinal direction F2. The snap-fit ​​connection between the narrowing portion 33 and the third retaining strip 23 not only enhances stability but also prevents detection errors caused by looseness. This snap-fit ​​design allows the narrowing portion 33 to move longitudinally, meeting the requirements of varying ink level 12 detection.

[0086] The narrowing portion 33 forms a relative abutment with the first and second retaining strips 21 and 22 as it moves along the ink cartridge's longitudinal direction F2, thereby physically preventing the narrowing portion 33 from straying from its path. This abutment further enhances the stability of the narrowing portion 33 during movement, preventing it from shaking or tilting. This relative abutment ensures the Hall effect sensor's positioning accuracy when detecting the ink level 12, preventing signal misalignment due to mechanical issues. It also reduces the need for additional limiting components and optimizes the design of the limiting assembly 20.

[0087] In a specific embodiment, the third clamping strip 23 is clamped with the narrowed portion 33 to form a gap. The diameter of the gap is denoted as C and satisfies the relationship:

[0088] C<B<A.

[0089] Specifically, the engagement design between the third clip 23 and the narrowed portion 33 provides additional structural support for the position limiter, ensuring its movement stability by partially engaging the narrowed portion 33. This design effectively controls the movement path while maintaining smooth sliding, preventing deviation of the first floating portion 31 or other components.

[0090] The locking mechanism of the narrowed portion 33 further constrains the component's motion, improving the accuracy of liquid level detection. The locking mechanism of the narrowed portion 33 prevents swinging or tilting, ensuring a secure connection between the floating portion and the locking bar. Compared to fully enclosed stoppers, the partial locking mechanism reduces friction and improves sliding efficiency.

[0091] A gap is formed between the narrowing portion 33 and the third clamping strip 23, allowing the floating part to slide freely while preventing jamming or wear caused by an interference fit. This gap provides adequate margin for error for moving components, improving system stability. This gap design ensures smooth sliding of the narrowing portion 33, reducing jamming caused by wear or resistance. The gap allows the narrowing portion 33 to maintain normal movement under slight external forces, adapting to environmental changes or external impacts. This reduces direct friction between the clamping strip and the narrowing portion 33, lowering component wear.

[0092] The diameter C of the gap is smaller than the diameter B of the narrowing portion 33. Meanwhile, the diameter B of the narrowing portion 33 is smaller than the diameter A of the floating portion, forming a hierarchical retaining structure design. This diameter relationship ensures that the sliding of the narrowing portion 33 within the third clamping strip 23 is controlled, while the movement of the floating portion within the outer clamping strip remains stable.

[0093] The hierarchical diameter relationship ensures that each level of the limiting structure performs its specific function, precisely controlling the motion path from the outside inward. The movement of the narrowing portion 33 within the third clamping strip 23 is controlled by the clearance, preventing any wobble or disengagement. The movement of the magnet 34 near the Hall effect element 40 is more precise, significantly reducing detection errors. The diameter gradient relationship effectively prevents interference between the various limiting layers.

[0094] In one embodiment, the ink level 12 detection assembly includes a PCB 50. The PCB 50 is electrically connected to the ink cartridge 10 and the printer. The PCB 50 defines a first interface 51 and a second interface 52, with the first interface 51 and the second interface 52 being located on the same side of the PCB 50. The first interface 51 is electrically connected to the printer to transmit signals, and the second interface 52 is electrically connected to the CPU to receive and process signals.

[0095] Specifically, the PCB (printed circuit board) 50 is electrically connected to the ink cartridge 10 and the printer for signal transmission. This is the core component of the ink level 12 detection assembly, responsible for sending and receiving signals, ensuring that the printer can monitor the ink 11 level in the ink cartridge 10 in real time.

[0096] The electrical connection ensures that the signal is transmitted from the ink cartridge 10 to the printer, and the transmission process is stable and free of interference.

[0097] The first interface 51 is used to send the detected ink 11 position information to the printer. It is electrically connected to the printer to ensure that the ink position 12 data can be delivered to the printer system in time to facilitate the execution of the next step (such as alarm or pause printing).

[0098] The second interface 52 is electrically connected to the CPU and is used to receive the ink 11 level signal transmitted by the first interface 51 and transmit it to the CPU for signal processing. The CPU analyzes the received signal and makes a decision (such as whether the ink 11 needs to be replenished or whether the printing task should be paused).

[0099] Through the second interface 52, the CPU processes signals from the ink cartridge 10 and responds according to pre-set logic. The CPU not only receives signals but also issues control instructions to the printer based on the processed results. This ensures that the processing and feedback of ink 11 level data is more intelligent and automated, reducing human error and operational complexity.

[0100] In a specific embodiment, the Hall element 40 is disposed on the other side of the PCB board 50 and is opposite to the first interface 51 and the second interface 52 .

[0101] Specifically, Hall element 40 is mounted on the other side of PCB 50, meaning it is located on the back side of PCB 50 and is not on the same side as first interface 51 and second interface 52. This arrangement is typically used to distribute components on different sides of a circuit board to optimize spatial layout and signal transmission, avoid interference, and ensure efficient system operation.

[0102] The Hall element 40 is disposed on the other side of the PCB board 50 , which can make the circuit design more compact and reduce space waste.

[0103] By separating the Hall element 40 from the signal interface, electromagnetic interference between the Hall element 40 and the first interface 51 and the second interface 52 can be effectively avoided, thereby improving signal transmission quality and system stability.

[0104] The Hall element 40 is designed to be located opposite the first interface 51 and the second interface 52 on the PCB 50, that is, it is located on the side opposite the signal interface. This allows the Hall element 40 to detect the ink 11 level independently of the signal transmission interface, avoiding signal interference and ensuring accurate detection results.

[0105] The Hall element 40 is arranged opposite the signal interface, ensuring that the signal detection function of the Hall element 40 is isolated from the transmission interface, preventing mutual interference and improving signal clarity and accuracy. This layout design ensures that the detection signal of the Hall element 40 and the transmission signal of the first interface 51 and the second interface 52 are physically separated, thereby making the transmission process more stable and avoiding signal noise caused by close proximity. The relative arrangement of the Hall element 40 and the interface ensures that the detection function of the Hall element 40 is not affected by other circuit components, thereby improving the accuracy of ink level 12 detection.

[0106] In one embodiment, the ink cartridge 10 includes a liquid inlet 60 and an ink extraction tube 70. The liquid inlet 60 connects the inside and outside of the ink cartridge 10. One end of the ink extraction tube 70 connects to the inside of the ink cartridge 10, and the other end of the ink extraction tube 70 connects to the printer.

[0107] Specifically, the liquid inlet 60 is an important component of the ink cartridge 10, which is used to connect the inside and outside of the ink cartridge 10 so that the ink 11 can be smoothly injected into the ink cartridge 10. The position design of the liquid inlet 60 is generally convenient for operators to quickly and accurately complete the ink 11 replenishment.

[0108] The design of the liquid inlet 60 allows users to quickly add ink 11 to the ink cartridge 10 without having to disassemble complex components. The liquid inlet 60 is directly connected to the interior of the ink cartridge 10, preventing ink 11 from spilling or wasting during refilling and improving efficiency. The standardized design of the liquid inlet 60 can be adapted to a variety of ink 11 refilling devices (such as syringes, ink 11 bottles, etc.), meeting the needs of different scenarios.

[0109] The ink extraction tube 70 is responsible for delivering the ink 11 in the ink cartridge 10 to the printer. One end of the ink extraction tube 70 is directly connected to the interior of the ink cartridge 10 , and the other end is connected to the ink supply system of the printer, forming a delivery path for the ink 11 .

[0110] The ink tube 70 delivers ink 11 from the ink cartridge 10 to the printer, ensuring a continuous and stable supply of ink 11 during operation. The ink tube 70 is typically designed to include a sealed connection to prevent air from entering the tube, thereby preventing ink 11 from evaporating or bubbles from affecting printing results.

[0111] Thus, an ink level detection assembly 100 based on Hall effect sensing is positioned within the ink cartridge 10 via a suspended magnet 30 and moves with changes in the ink level 12. When the suspended magnet 30 aligns with a Hall effect element 40 outside the ink cartridge 10, it signals that the ink 11 is low. The limiter assembly 20 guides the movement of the suspended magnet 30.

[0112] The above is only an implementation method of the present application. It should be pointed out that for ordinary technicians in this field, improvements can be made without departing from the creative concept of the present application, but these all fall within the scope of protection of the present application.

Claims

1. An ink level detection component based on Hall sensor, characterized in that: include: an ink cartridge, wherein ink is located in the ink cartridge and an ink level is formed along a height direction of the ink cartridge; A limit assembly is provided in the ink cartridge and is arranged in the same direction as the ink position; A suspension magnet is clamped in the limiting assembly and is movably connected to the limiting assembly along the height direction of the ink cartridge; The Hall element is arranged outside the ink cartridge and located at the starting end of the ink position. When the ink is located at the starting end of the ink position, the suspension magnet moves along the height direction of the ink cartridge to the starting end of the ink position, and the suspension magnet is arranged opposite to the Hall element.

2. The ink level detection component based on Hall sensor according to claim 1, characterized in that: The levitation magnet comprises: A first suspension portion is closely connected to the ink cartridge and faces the Hall element; a second suspension portion, symmetrically arranged with the first suspension portion and engaged with the limiting assembly; The narrowing portion is connected to the first suspension portion and the second suspension portion respectively and is located between the first suspension portion and the second suspension portion. The limiting assembly is engaged with the narrowing portion.

3. The ink level detection component based on Hall sensor according to claim 2, characterized in that: The diameter of the floating portion is recorded as A, and the diameter of the narrowed portion is recorded as B, which satisfies the relationship: A>B.

4. The ink level detection component based on Hall sensor according to claim 1, characterized in that: The suspension portion is provided with a placement hole, which is opened in a direction facing the Hall element. The suspension magnet further comprises a magnet, which is located in the placement hole.

5. The ink level detection component based on Hall sensor according to claim 2, characterized in that: The limiting component includes: a first clamping strip, arranged in the same direction as the ink level and connected to the ink cartridge; the first suspension portion is clamped in the first clamping strip, the first suspension portion is movably connected to the first clamping strip; the magnet in the first suspension portion and the Hall element are respectively located on opposite sides of the ink cartridge; when the magnet in the first suspension portion is facing the Hall element, the ink is located at the starting end of the ink level; The second clamping strip is arranged in the same direction as the ink position and is arranged side by side with the first clamping strip along the length direction of the ink cartridge. The second suspension portion is clamped in the first clamping strip, and the second suspension portion is movably connected to the second clamping strip.

6. The ink level detection component based on Hall sensor according to claim 5, characterized in that: The limiting assembly further includes: a third clip; The third clamping strip is arranged in the same direction as the ink position, the third clamping strip is located between the first clamping strip and the second clamping strip, the narrowing portion is clamped in the third clamping strip, and the narrowing portion is movably connected to the third clamping strip; The narrowed portion relatively abuts against the first clamping strip and the second clamping strip along the length direction of the ink cartridge.

7. The ink level detection component based on Hall sensor according to claim 6, characterized in that: The third clamping strip is clamped to the narrowed portion to form a gap. The diameter of the gap is denoted as C and satisfies the relationship: C<B<A.

8. The ink level detection component based on Hall sensor according to claim 1, characterized in that: The ink level detection component includes: A PCB board is electrically connected to the ink cartridge and the printer, the PCB board being provided with a first interface and a second interface, the first interface and the second interface being located on the same surface of the PCB board; The first interface is electrically connected to the printer to send signals; The second interface is electrically connected to the CPU to receive and process signals.

9. The ink level detection component based on Hall sensor according to claim 8, characterized in that: The Hall element is arranged on the other side of the PCB board and is arranged opposite to the first interface and the second interface.

10. The ink level detection component based on Hall sensor according to claim 9, characterized in that , the ink cartridge includes: a liquid inlet, communicating with the inside and outside of the ink cartridge; An ink extraction tube has one end connected to the ink cartridge and the other end connected to the printer.

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