Cleaning cloth detection module of intelligent floor sweeping robot

Abstract

The utility model discloses a cleaning cloth detection module of an intelligent sweeping robot, which comprises a bottom shell, a bottom cover and a PCB (printed circuit board), grooves are arranged at two ends of the bottom of the bottom shell, the PCB is arranged in the grooves, and the bottom cover is fixedly connected with the bottom shell; a rotating shaft is arranged in the groove, a shaft hole is correspondingly formed in the bottom cover, the rotating shaft penetrates through the shaft hole to be connected with a mop disc, and the end, away from the bottom cover, of the mop disc is used for installing cleaning cloth; an infrared transmitting tube and an infrared receiving tube are arranged on the PCB, the bottom cover is made of infrared light transmitting materials, and through holes corresponding to the infrared transmitting tube and the infrared receiving tube are formed in the mop disc. The infrared transmitting tube transmits infrared light, a light path penetrates through the bottom cover, penetrates through the through hole to reach the ground or the cleaning cloth, then is reflected, penetrates through the through hole of the mop disc, penetrates through the bottom cover and is received by the infrared receiving tube, different threshold values of infrared signals are reflected and received through the ground and the surface of the cleaning cloth, and in-place detection of the cleaning cloth is achieved.

Description

Technical Field

[0001] This utility model relates to the field of sweeping robot technology, and in particular to a cleaning cloth detection module for an intelligent sweeping robot. Background Technology

[0002] Intelligent robotic vacuum cleaners are highly intelligent, capable of autonomously cleaning rooms. They can detect obstacles such as furniture and steer accordingly, and will back away if they encounter a dangerous cliff, making them easier and less strenuous to use. Currently, robotic vacuum cleaners detect the cleaning cloth assembly by installing magnets on the mop disc and Hall effect sensors in corresponding positions on the robot. When the cleaning cloth assembly is correctly installed, the output of the Hall effect sensor changes, thus detecting whether the cleaning cloth assembly is installed. However, this technology can only detect whether the mop disc is in place; it cannot identify whether the cleaning cloth is properly installed during cleaning. If the user has not installed the cleaning cloth, the robotic vacuum cleaner will not mop effectively, affecting the user experience.

[0003] Therefore, this application aims to propose a cleaning cloth detection module for an intelligent sweeping robot, which is intended to solve the above-mentioned problems. Utility Model Content

[0004] The main purpose of this invention is to provide a cleaning cloth detection module for an intelligent sweeping robot, which aims to solve the technical problem in the prior art that sweeping robots cannot detect whether the cleaning cloth is properly installed during use.

[0005] To achieve the aforementioned utility model objectives, this utility model proposes a cleaning cloth detection module for an intelligent sweeping robot, comprising a bottom shell, a bottom cover, and a PCB board. The bottom shell has grooves at both ends, and the PCB board is disposed within these grooves. The bottom cover and the bottom shell are fixedly connected. A rotating shaft is disposed within each groove, and the bottom cover has corresponding shaft holes. The rotating shaft passes through these shaft holes and connects to a mop tray. The end of the mop tray furthest from the bottom cover is used to mount the cleaning cloth. An infrared emitting tube and an infrared receiving tube are disposed on the PCB board. The bottom cover is made of an infrared-transparent material, and the mop tray has corresponding through holes for the infrared emitting tube and infrared receiving tube.

[0006] Furthermore, the mop tray is made of an infrared-transmitting material.

[0007] Furthermore, the bottom cover is provided with corresponding infrared emitting tube and infrared receiving tube emitting holes and receiving holes.

[0008] Furthermore, teeth are provided around the periphery of the mop discs at both ends, and the two mop discs are connected by the meshing of the teeth.

[0009] Furthermore, a limiting block is provided in the groove, and the PCB board is engaged with the limiting block.

[0010] Furthermore, a connector is also provided on the PCB board, which is located between the infrared emitting tube and the infrared receiving tube.

[0011] Furthermore, the bottom cover is provided with a fastening hole, and the groove is provided with a corresponding threaded post. The bottom cover and the bottom shell are fastened to the threaded post by fasteners passing through the fastening hole.

[0012] Furthermore, a first protrusion is provided at one end of one side of the PCB board, and a second protrusion is provided at the other end. The first protrusion is connected to an infrared emitting tube, and the second protrusion is connected to an infrared receiving tube. The top surface of the first protrusion is a plane, and the top surface of the second protrusion is an inclined plane. The inclined plane faces the first protrusion. The infrared emitting tube is arranged along the plane, and the infrared receiving tube is arranged along the inclined plane, so that the infrared emitting tube and the infrared receiving tube form an angle.

[0013] Furthermore, both the bottom shell and the bottom cover are made of plastic.

[0014] Furthermore, the infrared-transmitting material is either an infrared-transmitting PC material or an infrared-transmitting PMMA material.

[0015] Beneficial effects:

[0016] Compared with the prior art, the cleaning cloth detection module of the intelligent sweeping robot of this application embodiment includes a bottom shell, a bottom cover and a PCB board. The bottom shell has grooves at both ends, the PCB board is disposed in the grooves, and the bottom cover and the bottom shell are fixedly connected. A rotating shaft is disposed in the groove, and the bottom cover has a corresponding shaft hole. The rotating shaft passes through the shaft hole and is connected to the mop tray. The end of the mop tray away from the bottom cover is used to install the cleaning cloth. An infrared emitting tube and an infrared receiving tube are disposed on the PCB board. The bottom cover is made of infrared-transparent material, and the mop tray has through holes corresponding to the infrared emitting tube and the infrared receiving tube. This technical solution involves setting a PCB board within a groove in the housing, with an infrared emitting tube and an infrared receiving tube on the PCB board. The bottom cover is made of infrared-transparent material, and the mop tray has through holes. Infrared light is emitted through the infrared emitting tube, passes through the bottom cover and through the through holes to reach the ground or cleaning cloth, and then reflects through the through holes of the mop tray. The light is then received by the infrared receiving tube through the bottom cover, and the presence of the cleaning cloth is detected by different thresholds of the infrared signals received by the ground and the surface of the cleaning cloth. Attached Figure Description

[0017] Figure 1 This is an exploded view of the detection module according to an embodiment of the present invention;

[0018] Figure 2 This is a three-dimensional structural diagram of the bottom cover according to an embodiment of the present utility model;

[0019] Figure 3 This is a three-dimensional structural diagram of a PCB board according to an embodiment of the present invention.

[0020] in:

[0021] 1. Bottom shell; 10. Groove; 11. Shaft; 12. Limiting block; 13. Threaded column;

[0022] 2. Bottom cover; 20. Shaft hole; 21. Fastening hole;

[0023] 3. PCB board; 30. Infrared emitting tube; 31. Infrared receiving tube; 32. Terminal block; 33. First protrusion; 34. Second protrusion;

[0024] 4. Mop tray; 40. Toothed teeth;

[0025] 5. Cleaning cloth.

[0026] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0027] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0028] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly and specifically defined.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0031] Please see Figures 1 to 3 In this embodiment, a cleaning cloth 5 detection module for an intelligent sweeping robot is proposed, including a bottom shell 1, a bottom cover 2, and a PCB board 3. The bottom shell 1 has grooves 10 at both ends, and the PCB board 3 is disposed in the grooves 10. The bottom cover 2 and the bottom shell 1 are fixedly connected. A rotating shaft 11 is disposed in the grooves 10, and the bottom cover 2 is provided with a corresponding shaft hole 20. The rotating shaft 11 passes through the shaft hole 20 and is connected to the mop tray 4. The end of the mop tray 4 away from the bottom cover 2 is used to install the cleaning cloth 5. An infrared emitting tube 30 and an infrared receiving tube 31 are disposed on the PCB board 3. The bottom cover 2 is made of infrared-transparent material, and the mop tray 4 is provided with through holes corresponding to the infrared emitting tube 30 and the infrared receiving tube 31.

[0032] In this embodiment, the bottom shell 1 serves as the basic support structure for the entire cleaning cloth 5 detection module, providing a carrier for the installation of other components. Specifically, the bottom of the bottom shell 1 has grooves 10 at both ends. These grooves 10 are used to install the PCB board, accommodating and positioning it so that the PCB board can be stably positioned, ensuring the normal layout and coordinated operation of subsequent related functional components (such as the limiting block 12 and the rotating shaft 11). The bottom shell 1 provides a stable framework for the entire module, preventing components from becoming loose or shifting due to a lack of effective support, ensuring the integrity and reliability of the overall module structure, and facilitating the stable operation of the cleaning cloth 5 detection function during the operation of the sweeping robot. The bottom cover 2 is fixedly connected to the bottom shell 1, forming a relatively enclosed space that protects the internal PCB board and other components from external dust, debris, and physical collisions, extending the service life of the components and ensuring the normal operating environment of the detection module. The fixed connection with the bottom shell 1 enhances the structural stability of the entire module, while protecting internal components and reducing the probability of failure. The shaft hole 20 ensures the smooth rotation of the mop disc 4, allowing the cleaning cloth 5 to perform its cleaning function effectively at different angles and positions. The infrared-transmitting material of the bottom cover 2 allows infrared light to pass through, ensuring accurate detection. The PCB board 3 is the control center of the entire detection module. The infrared emitting tube 30 on the PCB board is responsible for emitting infrared light outward, while the infrared receiving tube 31 is used to receive the reflected infrared light to determine the relevant status of the cleaning cloth 5, such as whether it is installed correctly. By integrating key detection components on the PCB board 3, the status of the cleaning cloth 5 can be effectively monitored, allowing the robot vacuum to know the status of the cleaning cloth 5 in a timely manner and make corresponding prompts or operations (such as reminding to replace the cleaning cloth 5), improving the intelligence and reliability of the robot vacuum's cleaning work, and making the cleaning process more efficient and smooth. The rotating shaft 11 is the component that enables the mop disc 4 to rotate. After passing through the shaft hole 20 of the bottom cover 2, it connects to the mop disc 4, allowing the mop disc 4 to rotate relatively flexibly around the rotating shaft 11. This allows the cleaning cloth 5 to continuously change its contact position with the ground as the mop disc 4 rotates, achieving comprehensive cleaning coverage. This ensures the flexibility of the mop disc 4's rotation, allowing the cleaning cloth 5 to dynamically contact the ground during the robot's movement, improving cleaning efficiency and quality, and avoiding problems such as cleaning dead spots caused by the cleaning cloth 5 being fixed in place. The mop disc 4 provides a platform for installing the cleaning cloth 5, with one end used to fix the cleaning cloth 5, allowing it to wipe and clean the ground as the mop disc 4 rotates. The infrared emitting tube 30 is responsible for emitting infrared light of a specific wavelength or frequency, which propagates through the bottom cover 2, mop disc 4, and other components towards the cleaning cloth 5.The infrared receiver 31 is responsible for receiving infrared light reflected back from the cleaning cloth 5 or after passing through the ground. Then, it compares the intensity and presence of the received infrared light with the corresponding set threshold to determine the state of the cleaning cloth 5, such as whether the cleaning cloth 5 is installed or whether the cleaning cloth 5 is intact. The two work together to form the core detection mechanism for the cleaning cloth 5, realizing non-contact detection of the cleaning cloth 5's state. This not only makes the detection process relatively accurate and reliable, but also does not cause physical damage to the cleaning cloth 5. This helps improve the robot vacuum cleaner's ability to control the usage of the cleaning cloth 5, ensures the smooth progress of cleaning work, and also enhances the overall intelligence level of the robot vacuum cleaner.

[0033] In the above embodiment, a PCB board 3 is provided in the groove 10 of the housing. An infrared emitting tube 30 and an infrared receiving tube 31 are provided on the PCB board 3. The bottom cover 2 is made of infrared-transparent material. The mop tray 4 is provided with a through hole. Infrared light is emitted through the infrared emitting tube 30. The light path passes through the bottom cover 2 and through the through hole to reach the ground or cleaning cloth 5. Then it is reflected and passes through the through hole of the mop tray 4. It is received by the infrared receiving tube 31 through the bottom cover 2. The presence detection of the cleaning cloth 5 is realized by the different thresholds of the infrared signals received by the ground and the surface of the cleaning cloth 5.

[0034] Please see Figures 1 to 3 In one embodiment, the mop tray 4 is made of an infrared-transmitting material. The infrared-transmitting material is either a PC material or a PMMA material that transmits infrared light.

[0035] In this embodiment, the mop tray 4, together with the infrared emitting tube 30 and infrared receiving tube 31 on the PCB board and the infrared-transmitting properties of the bottom cover 2, constitute a complete infrared detection system. Since the mop tray 4 is located at a crucial position between the infrared emitting tube 30, the infrared receiving tube 31, and the cleaning cloth 5, its use of an infrared-transmitting material allows the infrared light emitted by the infrared emitting tube 30 to pass smoothly through itself and propagate towards the cleaning cloth 5. It also facilitates the return of infrared light reflected from the cleaning cloth 5 or the infrared light passing through the cleaning cloth 5 to the mop tray 4 and be received by the infrared receiving tube 31. For example, when detecting whether the cleaning cloth 5 is installed correctly, the infrared light needs to pass unobstructed through the mop tray 4 to "sensor" the cleaning cloth 5, and then return along the same path or through the cleaning cloth 5. This infrared-transmitting characteristic establishes a smooth optical path for the entire infrared detection. It is understandable that if the mop tray 4 were not infrared-transmitting, the infrared light could not reach the cleaning cloth 5 or return to be received by the receiving tube, and the entire infrared-based cleaning cloth 5 detection function would not be possible.

[0036] In the above embodiments, PC (Polycarbonate) and PMMA (Poly(methylmethacrylate, commonly known as acrylic) materials have good light transmittance in the infrared band. They allow infrared light of a specific wavelength range to pass through with low loss, ensuring that the intensity of the infrared light emitted by the infrared emitting tube 30 remains at a level that can be effectively detected by the infrared receiving tube 31 after propagation through the mop disc 4, thereby improving the accuracy and reliability of detection. At the same time, both PC and PMMA materials can be made into mop discs 4 of various shapes and sizes through common injection molding and other processing technologies, which is convenient for mass production and can well meet the needs of standardization and mass production of mop discs 4 in the production process of sweeping robots, improving production efficiency. PC material has high strength and toughness, and is not prone to breakage or deformation due to external forces such as the movement of the sweeping robot and the friction of the cleaning cloth 5 during daily use. It can stably support the cleaning cloth 5 for a long time and maintain its own structural integrity, ensuring the continuous and normal operation of cleaning work and infrared detection function. PMMA material also has a certain strength and relatively good surface hardness. Its wear resistance can also meet the requirements of repeated use of the mop disc 4 on the robot vacuum cleaner, reducing problems such as decreased light transmittance caused by material wear.

[0037] Please see Figures 1 to 3 In one embodiment, the bottom cover 2 is provided with an emission hole and a receiving hole corresponding to the infrared emitting tube 30 and the infrared receiving tube 31.

[0038] In this embodiment, the presence of the emitting and receiving holes provides a precise propagation path for the infrared light emitted by the infrared emitting tube 30 and the infrared light reflected back and received by the infrared receiving tube 31. The light emitted by the infrared emitting tube 30 can pass directly through the bottom cover 2 in a predetermined direction through the corresponding emitting holes, avoiding scattering or refraction within the bottom cover 2 that could cause optical path confusion or reduced light intensity. This ensures that the infrared light propagates efficiently and accurately towards the mop tray 4 and the cleaning cloth 5. Similarly, the infrared light reflected back from or passing through the cleaning cloth 5 can also smoothly enter the bottom cover 2 through the receiving holes and be received by the infrared receiving tube 31, ensuring the accuracy and stability of the infrared detection optical path.

[0039] Please see Figures 1 to 3 In one embodiment, teeth 40 are provided around the periphery of the mop discs 4 at both ends, and the two mop discs 4 are connected by meshing teeth 40.

[0040] In this embodiment, the teeth 40 allow the two mop discs 4 to mesh with each other. When the robot vacuum's drive mechanism rotates one mop disc 4, the other mop disc 4 rotates synchronously through the meshing transmission between the teeth 40. For example, when the robot vacuum travels along the cleaning route, regardless of whether it encounters straight-line movement or turning, as long as power is applied to one mop disc 4, the other mop disc 4 can respond immediately, maintaining the same rotation rhythm and direction, ensuring that the two mop discs 4 work together. It is understandable that because the two mop discs 4 can rotate synchronously, the coverage and wiping frequency of the cleaning cloth 5 on the ground will be more uniform and comprehensive. For example, when cleaning a large area of ​​the ground, the two synchronously rotating mop discs 4 can wipe all areas of the ground without dead angles, reducing the possibility of missing uncleaned areas. Compared to a single mop disc 4 working independently or the two mop discs 4 rotating uncoordinatedly, it can remove dust and stains from the ground more efficiently, improving the overall cleaning quality.

[0041] Please see Figures 1 to 3 In one embodiment, a limiting block 12 is provided in the groove 10, and the PCB board 3 is engaged with the limiting block 12.

[0042] In this embodiment, the PCB board 3, by engaging with the limiting block 12, ensures that the PCB board is in a specific, pre-designed, and accurate position. This allows important components on the PCB board, such as the infrared emitter 30 and infrared receiver 31, to be precisely aligned with the corresponding emitter and receiver holes on the bottom cover 2 and the through holes on the mop tray 4, ensuring the accuracy of the entire infrared detection optical path. This allows the infrared light to propagate and be received along the expected path, thereby achieving effective detection of the cleaning cloth 5's state. Simultaneously, during the operation of the sweeping robot, vibrations, shaking, and forces in various directions are inevitable. The limiting block 12's engagement with the PCB board effectively restricts the horizontal, vertical, and other displacements of the PCB board within the groove 10, preventing it from moving arbitrarily or deviating from its original set position due to external forces. For example, when the sweeping robot turns, crosses obstacles, or moves on uneven ground, the PCB board remains firmly in the correct position, maintaining the stable relative positions of the components and ensuring that the detection function is not affected. Understandably, the secure installation of the PCB board is crucial for the entire cleaning cloth 5 detection module. The use of the limiting block 12 to secure it prevents the PCB board from becoming loose and colliding or rubbing against the inner wall of the groove 10 or other components, thus preventing damage to the PCB board itself.

[0043] Please see Figures 1 to 3In one embodiment, the PCB board 3 is further provided with a terminal block 32, which is disposed between the infrared emitting tube 30 and the infrared receiving tube 31.

[0044] In this embodiment, the terminal block 32 is used for wiring connections and is located between the infrared emitting tube 30 and the infrared receiving tube 31. It allows for the centralized connection of various lines related to these two key detection components. For example, power supply lines from the robot vacuum's main control board and signal lines transmitting detection signals can be orderly connected to the infrared emitting tube 30 and the infrared receiving tube 31 via the terminal block 32. This avoids the disorganization, confusion, and difficulty in management that can result from scattered wiring connections, making the entire circuit connection more organized and orderly. It provides a stable power supply to the infrared emitting tube 30, ensuring its continuous and stable emission of infrared light. Simultaneously, it provides a convenient channel for transmitting the detection signals received by the infrared receiving tube 31, facilitating the timely and accurate transmission of the received light signals regarding the cleaning cloth 5's state to the robot vacuum's main control system for analysis and processing, ensuring the smoothness of the signal transmission process in the detection function.

[0045] Please see Figures 1 to 3 In one embodiment, the bottom cover 2 is provided with a fastening hole 21, and the groove 10 is provided with a corresponding threaded post 13. The bottom cover 2 and the bottom shell 1 are fastened to the threaded post 13 by fasteners passing through the fastening hole 21.

[0046] In this embodiment, the fastening hole 21, the threaded post 13, and the fastener work together to ensure that the bottom cover 2 is tightly and securely connected to the bottom shell 1. After passing through the fastening hole 21 of the bottom cover 2, the fastener is screwed into the corresponding threaded post 13 in the groove 10. The engagement of the threads generates a fastening force, firmly fixing the bottom cover 2 and the bottom shell 1 into a single structure, preventing loosening or separation during normal operation of the robot vacuum cleaner. Specifically, the fastener is a bolt, and the threaded post 13 is an internally threaded post 13.

[0047] Please see Figures 1 to 3 In one embodiment, a first protrusion 33 is provided at one end of one side of the PCB board 3, and a second protrusion 34 is provided at the other end. The first protrusion 33 is connected to the infrared emitting tube 30, and the second protrusion 34 is connected to the infrared receiving tube 31. The top plane of the first protrusion 33 is a plane, and the top surface of the second protrusion 34 is an inclined plane. The inclined plane faces the first protrusion 33. The infrared emitting tube 30 is arranged along the plane, and the infrared receiving tube 31 is arranged along the inclined plane, so that the infrared emitting tube 30 and the infrared receiving tube 31 form an angle.

[0048] In this embodiment, the first protrusion 33 is connected to the infrared emitting tube 30 and its top is a flat surface, providing a stable and specific angled mounting plane for the infrared emitting tube 30. This allows the infrared emitting tube 30 to accurately emit infrared light in a set direction along this plane. The second protrusion 34 is connected to the infrared receiving tube 31, and its top slope faces the first protrusion 33. The infrared receiving tube 31 is positioned along the slope, guiding the propagation path of the infrared light. This allows the light emitted from the infrared emitting tube 30 to propagate at a suitable angle towards the slope and be received by the infrared receiving tube 31. By forming an angle between the two, the optical path required for the detection of the cleaning cloth 5 can be better matched, facilitating effective detection of the state of the cleaning cloth 5. This application does not limit the specific angle of the included angle, as long as it meets the detection requirements. It can be set according to the actual sweeping machine.

[0049] In the above embodiments, it can be understood that when the infrared emitting tube 30 and the infrared receiving tube 31 cannot form an angle, the optical path design of the infrared light is relatively complex in order to achieve the reflection and reception of the infrared light. Therefore, by designing the connection protrusion and angle of the infrared emitting tube 30 and the infrared receiving tube 31, the infrared detection optical path of the cleaning cloth 5 is optimized, enabling the module to more efficiently and accurately perform the function of monitoring the status of the cleaning cloth 5 in the intelligent sweeping robot, ensuring that the robot's cleaning work can be carried out in an orderly manner based on accurate information from the cleaning cloth 5, and improving the quality and reliability of the robot's cleaning operation.

[0050] In one embodiment, both the bottom shell 1 and the bottom cover 2 are made of plastic.

[0051] In this embodiment, plastic material can be easily molded into the shape of the bottom shell 1 and bottom cover 2 according to design requirements through processing techniques such as injection molding, satisfying various complex structural design needs. For example, structures such as grooves 10 at both ends of the bottom of the bottom shell 1 and shaft holes 20, emission holes, receiving holes, and fastening holes 21 on the bottom cover 2 can all be precisely realized during the plastic molding process, thereby building a stable external structural framework for the entire cleaning cloth 5 detection module, playing a fundamental role in supporting and protecting internal components. Compared with other materials such as metal, plastic has a relatively low density, making the overall weight of the bottom shell 1 and bottom cover 2 lighter. In intelligent sweeping robots, this helps to reduce the overall weight of the robot, reduce its energy consumption during operation, and make the robot move more flexibly and lightly.

[0052] The detection process of the cleaning cloth detection module 5 of this intelligent robotic vacuum cleaner is as follows:

[0053] Preparation Phase: After the intelligent robotic vacuum cleaner is started, the PCB board of the cleaning cloth 5 detection module begins to work. The circuit on the PCB board provides power to the infrared emitting tube 30, putting it in a state ready to emit infrared light. At the same time, the infrared receiving tube 31 is also activated, ready to receive infrared light signals.

[0054] Detection Phase: Driven by the PCB board, the infrared emitter 30 emits infrared light along the direction defined by the plane at the top of the first protrusion 33. Since the bottom cover 2 and the mop tray 4 are made of infrared-transmitting materials (such as infrared-transmitting PC material or infrared-transmitting PMMA material), and the mop tray 4 has corresponding through holes, the infrared light can pass smoothly through the bottom cover 2 and the mop tray 4 and propagate towards the cleaning cloth 5. When the infrared light reaches the cleaning cloth 5, different situations will occur. If the cleaning cloth 5 is installed in place and intact, the infrared light will be reflected back by the cleaning cloth 5. If the cleaning cloth 5 is damaged or not installed, the reflection and transmission of the infrared light will be different from the normal situation. For example, if the cleaning cloth 5 is significantly damaged, infrared light may pass through the damage more easily, resulting in a reduction in the amount of reflected light. Without the cleaning cloth 5, the infrared light would pass directly through the mop disc 4 to the ground and be reflected back. The reflected infrared light would travel along the mop disc 4 through the through-hole and through the bottom cover 2, entering the interior of the bottom cover 2. Since the infrared receiver 31 on the PCB board is set along the inclined surface of the top of the second protrusion 34 and forms an angle with the infrared emitter 30, this angle design allows the infrared receiver 31 to receive the returned infrared light signal at a suitable angle. After receiving the infrared light signal, the infrared receiver 31 converts the light signal into an electrical signal. The electrical signal is transmitted to the terminal block 32 through the circuit on the PCB board, and then transmitted to the main control system of the robot vacuum cleaner through the terminal block 32. The main control system will analyze and judge based on the received electrical signal and the preset threshold. If the received signal meets the preset threshold parameter range of the cleaning cloth 5 being installed properly and intact, the robot vacuum cleaner will determine that the cleaning cloth 5 is installed normally and can continue cleaning. Otherwise, it will remind the user to install the cleaning cloth 5.

[0055] In summary, the cleaning cloth detection module of an intelligent sweeping robot according to an embodiment of this application includes a bottom shell 1, a bottom cover 2, and a PCB board 3. The bottom shell 1 has grooves 10 at both ends, and the PCB board 3 is disposed in the grooves 10. The bottom cover 2 and the bottom shell 1 are fixedly connected. A rotating shaft 11 is disposed in the grooves 10, and the bottom cover 2 is provided with a corresponding shaft hole 20. The rotating shaft 11 passes through the shaft hole 20 and is connected to the mop tray 4. The end of the mop tray 4 away from the bottom cover 2 is used to install the cleaning cloth 5. An infrared emitting tube 30 and an infrared receiving tube 31 are disposed on the PCB board 3. The bottom cover 2 is made of infrared-transparent material, and the mop tray 4 is provided with through holes corresponding to the infrared emitting tube 30 and the infrared receiving tube 31. The technical solution involves setting a PCB board 3 within the recess 10 of the housing. The PCB board 3 is equipped with an infrared emitting tube 30 and an infrared receiving tube 31. The bottom cover 2 is made of infrared-transparent material. The mop tray 4 has a through hole. Infrared light is emitted through the infrared emitting tube 30. The light path passes through the bottom cover 2 and through the through hole to reach the ground or cleaning cloth 5. The light is then reflected and passes through the through hole of the mop tray 4. It is received by the infrared receiving tube 31 through the bottom cover 2. The presence of the cleaning cloth 5 is detected by the different thresholds of the infrared signals received by the ground and the surface of the cleaning cloth 5.

[0056] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural or procedural transformations made based on the content of the present utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present utility model.

Claims

1. A cleaning cloth detection module for an intelligent sweeping robot, characterized in that, include: The bottom shell, bottom cover, and PCB board are provided with grooves at both ends of the bottom of the bottom shell, the PCB board is disposed in the grooves, and the bottom cover and bottom shell are fixedly connected. A rotating shaft is provided in the groove, and a corresponding shaft hole is provided on the bottom cover. The rotating shaft passes through the shaft hole and is connected to the mop tray. The end of the mop tray away from the bottom cover is used to install a cleaning cloth. The PCB board is equipped with an infrared emitting tube and an infrared receiving tube. The bottom cover is made of infrared-transmitting material. The mop tray is provided with through holes corresponding to the infrared emitting tube and the infrared receiving tube.

2. The cleaning cloth detection module of the intelligent sweeping robot according to claim 1, characterized in that, The mop tray is made of infrared-transmitting material.

3. The cleaning cloth detection module of the intelligent sweeping robot according to claim 1, characterized in that, The bottom cover is provided with corresponding infrared emitting tube and infrared receiving tube emission holes and receiving holes.

4. The cleaning cloth detection module of the intelligent sweeping robot according to claim 1, characterized in that, The outer periphery of the mop discs at both ends is provided with teeth, and the two mop discs are connected by the meshing of the teeth.

5. The cleaning cloth detection module of the intelligent sweeping robot according to claim 1, characterized in that, A limiting block is provided in the groove, and the PCB board is engaged with the limiting block.

6. The cleaning cloth detection module of the intelligent sweeping robot according to claim 1, characterized in that, The PCB board is also provided with a terminal block, which is located between the infrared emitting tube and the infrared receiving tube.

7. The cleaning cloth detection module of the intelligent sweeping robot according to claim 1, characterized in that, The bottom cover is provided with a fastening hole, and the groove is provided with a corresponding threaded post. The bottom cover and the bottom shell are fastened to the threaded post by fasteners passing through the fastening hole.

8. The cleaning cloth detection module of the intelligent sweeping robot according to claim 1, characterized in that, The PCB board has a first protrusion at one end and a second protrusion at the other end. The first protrusion is connected to an infrared emitting tube, and the second protrusion is connected to an infrared receiving tube. The top surface of the first protrusion is a plane, and the top surface of the second protrusion is an inclined plane. The inclined plane faces the first protrusion. The infrared emitting tube is arranged along the plane, and the infrared receiving tube is arranged along the inclined plane, so that the infrared emitting tube and the infrared receiving tube form an angle.

9. The cleaning cloth detection module of the intelligent sweeping robot according to claim 1, characterized in that, Both the bottom shell and the bottom cover are made of plastic.

10. The cleaning cloth detection module of the intelligent sweeping robot according to claim 2, characterized in that, The infrared-transmitting material is either an infrared-transmitting PC material or an infrared-transmitting PMMA material.

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