A mopping and washing device with no dead angles

Abstract

This invention discloses a mopping and washing device with no blind spots, including a mop rotation module, a water absorption module, a drive mechanism, and a water spraying module. The mop rotation module includes a curved triangular base, a squeegee, and a curved suction tube. The suction port of the curved suction tube is located at the geometric center of the squeegee for easy sewage suction and recovery. The curved triangular base and the outer contour of the mop are obtained through a "fitting" method, so that the curved edge can highly mesh with the sides of the square when rotating. The drive mechanism includes a motor module and motor gears, which are responsible for providing power for cleaning. The water absorption module has a water absorption impeller and works with the curved suction tube to form a suction channel for sewage recovery.

Description

Technical Field

[0001] This invention relates to the field of cleaning equipment technology, specifically to a mopping and washing device that uses a mop to clean a square area without leaving any blind spots. Background Technology

[0002] With the development of artificial intelligence and automation, a wide variety of cleaning products have emerged on the market, among which cleaning devices that integrate water spraying, cleaning, and wastewater recycling are highly favored. However, most products on the market lack such functions and suffer from problems such as complex mechanical structures and unstable transmission. Moreover, most products use round mops or rollers for cleaning, resulting in cleaning dead corners. A cleaning device with no dead corners is described in the invention patent application specification with publication number CN115778256A, which combines a water suction device with a brush disc to efficiently recycle wastewater and clean without dead corners. However, its use of a disc brush as the cleaning terminal during the cleaning process may cause some damage to surfaces such as wooden floors and painted floors, limiting its application scenarios. Summary of the Invention

[0003] The purpose of this invention is to provide a mopping and washing device with no dead angles, which uses a mop as a cleaning terminal to achieve the functions of water spraying, cleaning and wastewater recycling.

[0004] This invention innovates the cleaning terminal's design and movement mode, enabling the curved triangular cleaning cloth to perform planetary motion under the action of the drive structure. The special geometry and movement mode ensure that the cleaning area is approximately square, effectively solving the cleaning dead corner problem present in the square corner areas of the aforementioned inventions. In this invention, the cleaning cloth rotation module and the water absorption module are combined. The suction port passes through the geometric center of the curved triangular base and the squeegee, with a very small distance between it and the ground. The cleaning cloth moves to clean the floor, and the wastewater on the floor collects in the curved suction port area under the action of the squeegee. Combined with the water absorption module, only a low-power impeller is needed to collect wastewater and debris.

[0005] Specifically, this invention relates to a mopping and washing device with no blind spots. Taking the device normally placed on the ground as a reference, it mainly includes a mop rotation module, a water absorption module, a drive mechanism, and a water spraying module. In some embodiments, the mop rotation module mainly includes a curved triangular mop, a squeegee, a curved triangular base, a base-fixed gear, a curved suction tube, a rotating gear set, a sun gear, a wear-reducing component, a large gear, and a gear shaft. The sun gear, the base-fixed gear, the rotating gear set, and the curved suction tube form a 2K-H type double planetary gear system. The curved triangular base and the base-fixed gear can be integrally formed by additive manufacturing or fixed by screws, and the two cannot rotate relative to each other. The sun gear has an upper cam hub near the main frame, with a threaded hole on its end face. It is fixed to the main frame with screws, preventing the sun gear from rotating freely. The large gear has a friction-reducing component on its inner surface, connected to it. The upper cam hub of the sun gear connects to the friction-reducing component, allowing the large gear to rotate freely around the geometric center of the sun gear. The friction-reducing component can be a copper sleeve, rolling bearing, etc. The circumference of the large gear spokes has gear shaft holes and a curved straw shaft hole, used to position the curved straw support end and the reversing gear shaft, respectively. The curved straw support end is fixed to the large gear with a threaded connection, preventing relative rotation. The gear shaft uses an interference fit with a rolling bearing, allowing relative rotation. A snap ring or a stepped shaft can be installed on the gear shaft to fix it to the gear in the rotating gear set, or an interference fit can be used for fixation. The outer contour of the curved triangular base is fitted to allow it to highly engage with the sides of a square when rotating. A circular groove is located at the inner geometric center to house the squeegee. The depth and size of the groove should be approximately the same as the thickness and size of the squeegee. The center of the squeegee is fixed to the suction port of the curved suction tube using an interference fit or adhesive bonding. A cloth, also curved triangular in shape, is placed under the base. A circular area, the same size as the suction port, is cut out at the center to ensure unobstructed suction. The drive mechanism mainly includes a motor module and motor gears. The main components of the suction module are located on the other side of the main frame opposite the cloth rotation module, and the drive mechanism is connected to the cloth rotation module.

[0006] When the no-dead-angle mopping device in the above embodiment is working, the spraying module sprays cleaning liquid onto the ground or facade. The drive mechanism causes the large gear to rotate, and the support end and suction end of the curved suction tube rotate around the central axis of the large gear, thereby driving the curved triangular base to revolve around the large gear. Simultaneously, as the rotating gear set and gear shaft revolve around the central axis of the large gear, the fixed sun gear meshes with the gears within the gear set, causing the rotating gear set to rotate around the inner hole of the large gear spokes. The gears within the gear set mesh with the gears fixed to the base, driving the curved triangular base to rotate around its own geometric center. The planetary motion resulting from the rotation and revolution causes the edge of the curved triangular mop to follow an approximately square trajectory. The squeegee, following the revolution of the curved suction tube, scrapes and collects wastewater from the mop, and the suction module, in conjunction with the curved suction tube, forms a suction channel to draw in the wastewater.

[0007] In some embodiments, the wiper frame, curved triangular base, and wiper assembly in the wiping cloth rotation module serve as a cleaning terminal. The wiper frame is positioned in a groove in the lower part of the curved triangular base and is fixed to the suction port of the curved suction tube using interference fit, adhesive bonding, or other methods. The wiper frame includes a shaft hole fixed to the suction port of the curved suction tube and located at the geometric center of the wiper frame, a fixing plate covering the shaft hole, an outwardly extending wiping strip, and reinforcing ribs. The wiping strip can be curved, straight, or zigzag, with the spiral direction of the line viewed from the outside in opposite to the rotation direction of the curved triangular base, allowing the wiping strip to effectively wipe away water. The wiping strip can also be slightly raised from the outside in. The reinforcing ribs can be located around the wiping strip, either with one end on the outside and one end on the fixing plate, or with one end on the outside of the wiping strip and one end on another wiping strip, mainly to reinforce the wiping strip and prevent deformation. The curved triangular base has a circular hole in the center, and ventilation windows are arranged around the circular hole. The ventilation windows can be fan-shaped, circular, or other shapes to allow air to circulate at the bottom of the cleaning terminal and avoid a vacuum state. The curved triangular base is fitted with a contour line. The cloth is fixed under the curved triangular base, with its outer edge coinciding with or slightly extending beyond the outer edge of the curved triangular base to increase the cleaning area. A circular area is cut in the center to prevent the cloth from obstructing the curved straw's water absorption function. The cloth can be fixed to the curved triangular base using Velcro or clips. When using Velcro, simply attach the side with the elastic fibers and hooks to the bottom of the base. When using clips, a notch can be made on the outer edge of the curved triangular base to accommodate the clips. Alternatively, a drawstring bag style can be created by opening holes on the outer edge of a larger triangular cloth and threading a rope through it, covering the curved triangular base and tightening the opening. Or, the outer side of the cloth can be fixed to an elastic band to facilitate covering the base. The cloth material must have a certain water absorption capacity and be lint-free. The curved triangular base drives the cloth to rotate and clean the floor. Through friction with the floor and the action of the squeegee, wastewater is collected and gathered to the suction area of ​​the curved straw, where it is recycled through the water absorption module.

[0008] In some embodiments, the curved suction tube is inverted H-shape and is located between the curved triangular base and the large gear. The curved suction tube has a suction end, a support end, and an outlet end. The suction end is provided with a bearing at the connection point between the suction end and the fixed gear of the base. The suction end passes through the geometric center of the curved triangular base and the wiper frame and extends close to the ground. The outlet end is provided with a bearing at the center of the sun gear, passes through the main frame, and is directly connected to the sewage collection tank to form a sewage suction channel. The support end is placed on the spoke of the large gear by an embedded bolt.

[0009] In some embodiments, the ratio of the number of teeth between the sun gear and the fixed gear on the chassis in the wiping cloth rotating module is 4:3. At this time, the ratio of the angular velocity of the curved triangular chassis rotating around its geometric center to the angular velocity of its revolution around the center of the large gear is 1:3, which ensures that the area covered by the planetary motion of the curved triangular chassis is square. The rotating gear set can be a double gear, in which the second reversing double gear meshes with the sun gear to make the gear shaft rotate around the inner hole of the spoke of the large gear, and the first reversing gear meshes with the fixed gear on the chassis to drive the curved triangular chassis to rotate around its own geometric center; alternatively, a long cylindrical gear can be used, with both ends meshing with the sun gear and the fixed gear on the chassis respectively.

[0010] In some embodiments, the curved suction nozzle end of the wiping cloth rotating module is provided with a floating spring, and the center of the squeegee is fitted with a gap to the suction nozzle end, so that the squeegee can slide within a small range at the suction nozzle end and float close to the ground.

[0011] In some implementations, the motor module in the drive mechanism uses a combination of a DC motor and a reduction gear, or a thin disc motor or hub motor. The motor module is fixed to the upper or lower side of the main frame with bolts. The motor output shaft and motor gear of the motor module can be fixedly connected by a key or other means. Depending on the usage environment, one or more cloth rotation modules can be set. When the motor drives a single cloth rotation module, the motor gear directly drives the large gear to rotate. When the motor drives multiple cloth rotation modules, a transmission reversing gear and a driven gear are added to form a gear set that meshes with the large gear for transmission. Alternatively, each cloth rotation module can be driven by a separate motor module. When multiple cloth rotation modules are arranged symmetrically, A transmission reversing gear should be added to change the direction of the adjacent wiping disc to counteract the radial force; depending on the distance between the motor gear and the large gear, a driven gear should be added until it meshes with the large gear for transmission; for indoor home environments, two curved wiping disc rotating modules can be set independently or combined with multiple circular traditional cleaning trays. The main frame should be a rectangle with a large length-to-width ratio, with the traditional circular cleaning tray in the middle and the two rotating modules on both sides, or four rotating modules can be set symmetrically; for indoor shopping malls or building facades, four rotating modules can be set independently or combined with a single traditional circular cleaning tray. The traditional circular cleaning tray is set at the center of the main frame, and the four rotating modules are symmetrically arranged at the four vertices of the main frame about the center plane of the main frame.

[0012] In some embodiments, the water suction module includes a sewage collection tank, a water suction impeller, an impeller motor mounting bracket, an impeller motor and an impeller motor cover plate, and either a sewage tank or a sewage discharge pipe. The sewage collection tank is located above the main frame and has a flange that is bolted to the main frame. The flange has a groove in the middle to hold the water suction impeller. The impeller motor mounting bracket is located above the sewage collection tank to support the water suction impeller. The impeller motor mounting bracket has a noise-absorbing layer, which can be made of materials such as rubber shock-absorbing pads. The impeller motor cover plate is fixed to the impeller motor mounting bracket by a snap-fit ​​method and has a slot and mounting hole in the middle for placing the impeller motor. The sewage collection tank has a discharge port at its lowest point, and the sewage is discharged into the sewage tank or discharged from the sewage discharge channel. To prevent sewage from leaking out from the gaps in the transmission components during the sewage recovery process, the outlet end of the curved suction pipe passes through the main frame and is directly connected to the sewage collection tank. A sealing ring is provided between the main frame and the sewage collection tank.

[0013] In some implementations, the water spraying module includes one of a water pump, a clean water tank or a clean water delivery pipe, and a water spray nozzle. The water spraying module is equipped with an infrared sensor or a Hall sensor to detect the position of the curved triangular base, preventing cleaning fluid from being sprayed onto the non-cleaning surface of the curved triangular base and causing water erosion. The sensor is located next to the water spray nozzle on the main frame. When the cleaning device is turned on, the infrared or Hall sensor first detects whether the current position of the curved triangular base is blocking the water spray nozzle. If the curved triangular base is not detected to be blocking the water spray nozzle, the water spraying operation is performed. If the curved triangular base is detected to be blocking the water spray nozzle, the water spraying is delayed to ensure that the curved triangular base does not block the water spray nozzle.

[0014] Furthermore, the drive mechanism can adopt gear drive, belt drive, and chain drive. Gear drive has a compact structure and is suitable for indoor furniture scenarios, while belt drive and chain drive are lightweight and suitable for indoor shopping malls and building facade scenarios.

[0015] The beneficial effects of this invention are:

[0016] 1. The present invention uses a curved triangular cloth as the cleaning terminal of the device, which will not scratch the surface to be cleaned, makes it easy to clean stubborn stains, and the cloth is easy to disassemble and replace after use.

[0017] 2. This invention combines a squeegee frame with a curved triangular base, and sets the suction port of the curved suction tube at the geometric center of the squeegee frame. The suction port is close to the ground, and the rotating rag gathers the wastewater on the ground, thus realizing wastewater recycling.

[0018] 3. This invention, through its specially designed curved triangular base and planetary motion, can perform thorough water cleaning of square areas without the need for a square limiting device.

[0019] 4. The cloth rotation module used in this invention has a simple structure, high transmission efficiency and motion stability, and low power consumption. It can be used not only in cleaning robots, but also in handheld mops. It is suitable for use in small household areas such as living rooms and bedrooms, as well as large shopping mall floors, and even for cleaning building facades. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below, and are not intended to limit the present invention. In the drawings, for ease of explanation, the thickness, size, and shape of the objects have been slightly exaggerated. The drawings are for illustrative purposes only and are not drawn strictly to scale.

[0021] Figure 1 This is an exploded view of the no-dead-angle mopping device of the present invention;

[0022] Figure 2 This is a bottom view of the mopping and washing device with no blind spots according to the present invention;

[0023] Figure 3 This is a top view of the mop cleaning device with no blind spots according to the present invention;

[0024] Figure 4 This is an example diagram of the wiper rack style of the present invention;

[0025] Figure 5 This is a schematic diagram of the curved straw of the present invention;

[0026] Figure 6 This is a cross-sectional view of the mopping and washing device for wiping cloths without dead angles according to the present invention;

[0027] Figure 7 This is a schematic diagram of the cleaning terminal of the present invention;

[0028] Figure 8 This is a schematic diagram showing the fit between the wear-reducing component and the gear in this invention;

[0029] Figure 9 Arrangement of cleaning terminals: 1;

[0030] Figure 10 Arrangement of cleaning terminals, method 2;

[0031] Figure 11 This is a schematic diagram of the wiper frame.

[0032] Figure 12 This is a magnified view of a portion of the spring device;

[0033] Explanation of reference numerals in the attached figures:

[0034] 101-Scraper frame, 1011-Shaft hole, 1012-Fixed disc, 1013-Scraper strip, 1014-Reinforcing rib, 102-Curved triangular base, 103-Base fixed gear, 104-Bent suction tube, 105-First reversing double gear, 106-Second reversing double gear, 107-Sun gear, 108-Anti-friction component, 109-Large gear, 110-Gear shaft, 201-Sewage collection tank, 202-Suction impeller, 203-Impeller motor mounting bracket, 204-Impeller motor, 205-Impeller motor cover plate, 206-Sewage tank, 301-Motor module, 302-Motor gear, 303-Driven gear, 304-Transmission reversing gear, 305-Gear shaft, 401-Water pump, 402-Clear water tank, 500-Main frame. Detailed Implementation Plan

[0035] To enhance understanding of the present invention, it will be further described in detail below with reference to embodiments and accompanying drawings. These embodiments are for illustrative purposes only and do not constitute a limitation on the scope of protection of the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, all equivalent transformations or modifications made according to the spirit and essence of the main technical solution of the present invention should be covered within the scope of protection of the present invention.

[0036] This invention proposes a mopping device with no blind spots, taking the device normally placed on the ground as a reference. Figure 1 As shown, the cleaning device includes a cloth rotating module 100, a water absorption module 200, a drive mechanism 300, and a water spraying module 400.

[0037] In one or more embodiments, the rag rotation module 100 of the no-dead-angle rag mopping device is composed of components such as a curved triangular rag, a squeegee 101, a curved triangular base 102, a base-fixed gear 103, a curved suction tube 104, a rotating gear set, a sun gear 107, a wear-reducing component 108, a large gear 109, and a gear shaft 110. The sun gear 107, the base-fixed gear 103, the rotating gear set, and the curved suction tube 104 form a 2K-H type double planetary gear system. The curved triangular base 102 and the base-fixed gear 103 can be integrally formed by additive manufacturing or fixed together with screws, and they cannot rotate relative to each other. The sun gear 107 has an upper cam hub near the main frame, with a threaded hole on its end face, and is fixed to the main frame with screws, preventing the sun gear 107 from rotating freely. Figure 8As shown, the inner surface of the large gear 109 is provided with a friction-reducing component 108 and connected to it. The upper cam hub of the sun gear 107 is connected to the friction-reducing component 108. The large gear 109 can rotate freely around the geometric center of the sun gear 107. The friction-reducing component can be a copper sleeve, rolling bearing, etc. The circumference of the spokes of the large gear 109 is provided with a curved straw shaft hole and a gear shaft hole, which are used to position the curved straw support end 104B and the reversing gear shaft 110, respectively. The curved straw support end 104B is fixed to the large gear 109 by a threaded connection and cannot rotate relative to it. The gear shaft 110 is interference-fitted with a rolling bearing and can rotate relative to it. A snap ring or a stepped shaft can be provided on the gear shaft 110 to fix it to the gear in the rotating gear set, or it can be fixed by an interference fit. The outer contour of the curved triangular base 102 is fitted so that it can highly mesh with the sides of the square when rotating. A circular groove is opened at the geometric center of the inner side to place the squeegee 101. The depth and size of the groove should be approximately the same as the thickness and size of the squeegee 101. The squeegee 101 is placed in the groove. The center of the squeegee 101 is fixed to the suction port 104C of the curved suction tube by interference fit or adhesive bonding. A cloth is covered under the base. The cloth is a curved triangular shape of the same type, and a circular area of ​​the same size as the suction port is cut out in the center. The drive mechanism mainly includes components such as the motor module 301 and the motor gear 302. The main components of the water absorption module 200 are set on the other side of the main frame relative to the cloth rotation module 100. The drive mechanism 300 is connected to the cloth rotation module 100.

[0038] In the above embodiment, when the no-dead-angle mopping device is working, the water spraying module 400 first sprays cleaning liquid onto the ground or vertical surface. The motor module 301 drives the large gear 109 to rotate through the motor gear 302 or gear set. The support end 104B and suction end 104C of the curved suction tube rotate around the central axis of the large gear 109, thereby driving the curved triangular base 102 to revolve around the large gear 109. While the rotating gear set and gear shaft 110 revolve around the central axis of the large gear 109, the fixed sun gear 107 meshes externally with the gears in the gear set, causing the rotating gear set to rotate around the inner hole of the spokes of the large gear 109. The gears in the gear set mesh externally with the gears fixed to the base 103, driving the curved triangular base 102 to rotate around its own geometric center. The planetary motion resulting from the combination of rotation and revolution causes the curved triangular mop to move in an approximately square trajectory. The squeegee 101 revolves with the curved suction tube 104, scraping and collecting wastewater from the rag. The suction module, in conjunction with the curved suction tube 104, forms a suction channel to draw in the wastewater. When the no-dead-angle rag mopping device finishes its work, the water spraying module 400 stops spraying water first, then the curved triangular rag stops cleaning, and finally the suction module 200 stops absorbing water.

[0039] In some embodiments, such as Figure 7As shown, the squeegee 101, curved triangular base 102, and wiping cloth in the wiping cloth rotation module are combined as a cleaning terminal. The squeegee 101 is set in a circular groove in the lower part of the curved triangular base 102. The central hole is interference-fitted or glued to the suction port end 104C of the curved suction tube, so that the two cannot rotate relative to each other. Figure 11 As shown, the wiper frame 101 includes a shaft hole 1011 fixed to the suction port and located at the geometric center of the wiper frame, a fixing plate 1012 covering the shaft hole, an outwardly extending wiping strip 1013, and a reinforcing rib 1014; the wiping strip 1013 can be curved, straight, or broken, etc., and the spiral direction of the line viewed from the outside to the inside is opposite to the rotation direction of the curved triangular base, so that the wiping strip 1013 can perform effective wiping action, and the wiping strip can also be slightly raised from the outside to the inside. Figure 4 Lines a and d are clockwise spirals, b is a counterclockwise straight line, and c and e are counterclockwise curves. Reinforcing ribs 1014 can be placed around the scraper strip, either with one end on the outer perimeter and the other on the fixing plate, or with one end on the outer perimeter of the scraper strip and the other on another scraper strip. Their main function is to reinforce the scraper strip and prevent deformation. A circular hole is opened in the center of the curved triangular base (102), and ventilation windows are arranged around the circular hole. The ventilation windows can be fan-shaped, circular, etc., to allow air circulation at the bottom of the cleaning terminal and prevent it from being in a vacuum state. The outer contour of the curved triangular base 102 is obtained by dynamic rotation and cutting. First, a square with a side length of 'a' is set in the design software and its circumcircle is drawn. Then, the center of the circumcircle is shifted horizontally to the right by a certain distance. Next, the circumcircle is given a rotational motion around the offset center and a revolution motion around the geometric center of the square. During this process, the arc exposed outside the square is cut off every 10° of revolution of the circumcircle. This operation is repeated until all the arcs exposed outside the square are cut off. After the cutting is completed, the cusps of the arcs are rounded. The remaining curve inside the square is the outer contour of the curved triangular base 102. The cloth covers the curved triangular base 102, with its outer edge covering or slightly extending beyond the curved edge of the base 102. A small area is cut out in the center to ensure the suction port is not obstructed when absorbing water. The cloth can be secured to the base 102 using Velcro or snap fasteners. When using Velcro, simply attach the side with the barbed elastic fibers to the base. When using snap fasteners, a notch can be made on the outer edge of the base 102 to accommodate the fastener; or a larger triangular cloth can be placed on top of the base. The edge is perforated and a drawstring is threaded through it to form a drawstring bag style, which covers the curved triangular base 102 and tightens the drawstring opening; or the outer side of the rag is fixed to the elastic band so that the rag can cover the base; the rag material can be common materials such as coral fleece or bamboo fiber, which are required to have a certain water absorption capacity and not shed lint; the curved triangular base 102 drives the rag to rotate and clean the floor, and through the friction with the floor and the action of the squeegee 101, the wastewater is collected and gathered to the suction port area of ​​the curved suction tube 104, and recycled through the water absorption module 200.

[0040] In some embodiments, such as Figure 5 As shown, the curved suction tube 104 in the wiping cloth rotation module is inverted H-shaped and is set between the curved triangular base 102 and the large gear 109. The curved suction tube has a suction end 104C, a support end 104B and an outlet end 104A. The suction end is provided with a bearing at the connection with the fixed gear 103 of the base. The suction end passes through the geometric center of the curved triangular base 102 and the wiper frame 101 and extends close to the ground. The outlet end is provided with a bearing at the center of the sun gear 107. It passes through the main frame and is directly connected to the sewage collection tank 201 to form a sewage suction channel. The support end is placed on the spoke of the large gear 109 by an embedded bolt.

[0041] In some embodiments, to ensure that the area covered by the planetary motion of the curved triangular base 102 is square, the fixed gear 103 of the base needs to rotate 120° when the curved straw 104 rotates one revolution. That is, the ratio of the rotational angular velocity of the curved triangular base 102 about its geometric center to the angular velocity of its revolution around the center of the large gear 110 is 1:3. The transmission ratio between the curved straw 104, acting as the planetary carrier H, and the large gear 109 can be expressed as:

[0042] It is deduced that the gear ratio between the sun gear 107 and the chassis-fixed gear 103 must be 4:3. The rotating gear set can be a double gear, in which the second reversing double gear 106 meshes externally with the sun gear 107, causing the gear shaft 110 to rotate around the inner hole of the spoke of the large gear 109. The first reversing gear 105 meshes externally with the chassis-fixed gear 103, driving the curved triangular chassis 102 to rotate around its own geometric center. Alternatively, a long cylindrical gear can be used, with both ends meshing externally with the sun gear 107 and the chassis-fixed gear 103, respectively.

[0043] In some embodiments, such as Figure 12 As shown, the curved suction nozzle end 104C of the wiping cloth rotation module 100 is equipped with a floating spring, and the center of the squeegee 101 is fitted with the suction nozzle end with a gap, so that the squeegee 101 can slide within a small range at the suction nozzle end and float close to the ground.

[0044] In some embodiments, the motor module 301 in the drive mechanism 300 adopts a combination of a DC motor and a reduction mechanism, or a thin disc motor or hub motor. The motor module 301 is fixed to the upper side of the main frame with bolts. The motor output shaft passes vertically through the main frame and connects to the motor gear 302 located on the lower side of the main frame. The motor gear 302 can be fixed by means of key connection, etc. In the embodiment, when the motor drives a single cloth rotation module 100, the motor gear 302 directly drives the large gear 109 to rotate. In the embodiment, when the motor drives multiple cloth rotation modules 100, a transmission reversing gear 304 and a driven gear 303 are added to form a gear set that meshes with the large gear 109. The transmission reversing gear 304 is set to change the rotation direction of the cloth discs on adjacent sides, so that the rotation direction of the double-sided curved triangular base 102 is opposite, thus counteracting the radial force. The driven gear 303 is set to transmit the motion of the motor gear 302 to the large gears 109 on both sides. The gear ratio is set to... This gear ratio was chosen because the motor speed is too high, while the curved triangular chassis 102 of this invention does not require a high speed. The driven gear 303, transmission reversing gear 304, etc., are fixed via gear shaft 305, using a key connection or similar method. The motor module 301 is positioned on the upper side of the main frame, while the motor gear 302, driven gear 303, etc., are positioned on the lower side. This design allows for more space in the cleaning device, making the structure more compact and miniaturized. Furthermore, since the cleaning device will come into contact with more wastewater, this design helps prevent contamination of the motor module 301. A baffle plate is used instead of a fixing ring because it can block most of the wastewater from the gears. The gear shaft 305 is a stepped shaft that can rotate relative to the main frame. The gear shaft 305 has a shoulder for positioning the gear, and a general-purpose baffle plate is located at its lower end. The baffle plate has openings at corresponding positions and protrusions at the edges of the openings, allowing the gear shaft 305 to pass through and fix the gears. The drive mechanism 300 can be driven not only by gears, but also by belts, chains, etc. Gear drives are compact and suitable for indoor furniture scenarios, while belt and chain drives are lightweight and suitable for indoor shopping malls and building facades. Chain and belt drives are especially suitable when multiple cleaning modules are set up.

[0045] In some embodiments, the water absorption module 200 of the no-dead-angle mopping device includes one of the following: a wastewater collection tank 201, a water absorption impeller 202, an impeller motor mounting bracket 203, an impeller motor 204, an impeller motor cover plate 205, a wastewater tank 206, or a sewage pipe. The wastewater collection tank 201 is located above the main frame and is conical in shape, narrower at the top and wider at the bottom. The wastewater collection tank 201 has a flange and is fixed to the main frame by bolts. It has a groove in the middle to hold the water absorption impeller 202. Above the wastewater collection tank 201 is the impeller motor mounting bracket 203, which has a groove in the middle for mounting the water absorption impeller 202 and the impeller motor 204. The impeller motor mounting bracket 203 is equipped with noise-reducing materials such as rubber shock-absorbing pads to reduce machine noise. Above that is the impeller motor cover plate 205, which has a slot and mounting hole in the middle for placing the impeller motor 204. The impeller motor 204 has a relatively low power output. The impeller motor cover 205 is fixed to the impeller motor mounting bracket 203 by a snap-fit ​​mechanism. The wastewater collection tank 201 has a wastewater outlet at its lowest point. This outlet can be directly opposite the wastewater inlet of the wastewater tank 206 or connected to a sewage pipe. The main function of the wastewater collection tank 201 is to separate water and air, discharging wastewater centrally and discharging airflow upwards or to the sides (upper or lower) of the wastewater collection tank 201. The air outlet of the facade cleaning device can also be located on one side of the impeller motor 204. A baffle is installed on the side of the wastewater collection tank 201 near the channel of the curved suction pipe 104. The discharged airflow carries a small amount of water vapor, which can be further filtered by a sponge-like filter at the air outlet on the casing. To prevent wastewater from impacting the wastewater collection tank 201 and causing water droplets to splash out and be carried away by the airflow, a wire mesh splash guard can be installed on the tank wall facing the impeller airflow outlet. The tank wall cross-section can be set in an arc shape, allowing splashed water droplets to fly towards the center of the circle facing the airflow outlet. The tank wall can be set at an angle downwards or upwards, and multiple grooves can be set on the tank wall to accommodate water droplets and prevent them from being carried upwards by the airflow. The wastewater collection tank 201 can be installed on the main frame or top cover by a bracket. The part near the impeller front cover can replace the impeller front cover. The gap between the tank and the suction impeller 202 should be as small as possible, but they should not touch.

[0046] In some embodiments, the water spraying module in the no-dead-angle mopping device includes one of a water pump 401, a clean water tank 402 or a clean water delivery pipe, and a water spray nozzle. The water spraying module 400 is equipped with an infrared sensor or a Hall sensor to detect the position of the curved triangular base 102, so as to avoid the cleaning liquid being sprayed onto the non-cleaning surface of the curved triangular base 102 and causing water erosion. The sensor is set on the top or side of the water spray nozzle on the main frame. The function of both types of sensors is to detect the position of the curved triangular base 102 and determine whether to spray water or start the rotation mode. When the floor cleaning robot is first turned on, the sensors activate to detect whether the curved triangular base 102 is blocking the water spray nozzle. If the curved triangular base 102 is not blocking the water spray nozzle, the robot will start spraying water. If the curved triangular base 102 is blocking the water spray nozzle, the robot will rotate the curved triangular base 102 until it is no longer blocking the water spray nozzle, and the spraying operation will continue for a period of time. The curved triangular base 102 will rotate to clean the surface to be cleaned, and at the same time the water suction module 200 will be activated to collect wastewater.

[0047] Preferably, one or more cloth rotating modules 100 can be set according to the usage environment. They can be driven by a motor module 301 in conjunction with a gear set, or each cloth rotating module 100 can be configured with a separate motor for individual drive. When multiple cloth rotating modules 100 are used, a transmission reversing gear 304 can be added to change the direction of the cloth disc on the adjacent side to counteract the radial force and achieve a symmetrical arrangement of the cloth discs; such as Figure 9 As shown, for indoor home environments, two independent mop rotating modules 100 can be installed or combined with multiple circular traditional cleaning trays. The main frame should be a rectangle with a large length-to-width ratio, with the traditional circular cleaning tray in the middle and the two rotating modules on either side, or four rotating modules symmetrically distributed. Figure 10 As shown, for indoor shopping malls or building facades with open spaces, four rotating modules can be set up independently, or combined with a single traditional circular cleaning chassis. The traditional circular cleaning chassis is set at the center of the main frame, and the four rotating modules are symmetrically arranged at the four vertices of the main frame about the central plane of the main frame.

[0048] Depending on the degree of stains, the usage environment, and the appropriate speed of the cleaning device, the rotation speed of the rag and the water output of the water spray module 400 are adjusted to ensure that the water (cleaning liquid) is fully mixed with the stains on the ground or facade. This ensures both the cleaning effect and that there is water on the suction end 104C of the curved suction tube. The gas-liquid mixture is sucked into the suction impeller 202. The liquid sprayed out by the suction impeller 202 impacts the wall of the sewage collection tank 201 due to inertia and flows to the sewage outlet at the bottom. The airflow separated by water filtration (although it is sewage) can be directly discharged from the outer shell of the cleaning mechanism.

[0049] The device of this invention can be used in floor cleaning robots or wall-climbing robots for cleaning building facades, and can also be used in handheld floor cleaning machines. The handheld floor cleaning machine can have a slot for manually operating the push handle on the machine shell, and the power switch can be placed on the push handle. A moving module can be added to the device. The floor cleaning robot can be equipped with a moving module, including wheels, drive devices, etc., and can be electrically controlled. Various electrical control technologies can be applied to this invention, and their principles will not be elaborated here.

[0050] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and 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. Therefore, they should not be construed as limitations on this invention.

Claims

1. This invention claims protection for a mopping and washing device with no blind spots, with the device normally placed on the ground as a reference, characterized in that... It includes a cloth rotating module (100), a water absorption module (200), a drive mechanism (300), and a water spraying module (400): The cloth rotating module (100) mainly includes a curved triangular cloth, a squeegee (101), a curved triangular chassis (102), a chassis-fixed gear (103), a curved suction tube (104), a rotating gear set, a sun gear (107), a wear-reducing component (108), a large gear (109), and a gear shaft (110); wherein the sun gear (107), the chassis-fixed gear (103), the rotating gear set, and the curved suction tube (104) form a 2K-H type double planetary gear system; the curved triangular chassis (102) is fixed to the chassis-fixed gear (103); the sun gear (107) is fixed to the main... The frame is fixedly connected; the inner surface of the large gear (109) is provided with a wear-reducing component (108) and connected to it; the upper cam hub of the sun gear (107) is connected to the wear-reducing component (108); the large gear (109) can rotate freely around the geometric center of the sun gear (107); the spokes of the large gear (109) are provided with an inner hole connected to the support end of the curved straw (104) and the gear shaft (110); the support end (104B) of the curved straw is fixed to the large gear (109) and cannot rotate relative to it; a rolling bearing is provided above the gear shaft (110) in the inner hole of the large gear (109); the rotating gear set is fixedly connected to the gear shaft (110); the outer contour of the curved triangular base (102) is fitted, and the high meshing is positive when rotating. The square side has a circular groove at its inner geometric center. The squeegee (101) is placed in the groove and fixed to the suction end (104C) of the curved suction tube. The squeegee (101) has a squeegee strip (1013) with arc, straight, and broken lines. The spiral direction of the strip from the outside to the inside is opposite to the rotation direction of the curved triangular base (102). The curved triangular base (102) is covered with a rag. The drive mechanism (300) mainly includes a motor module (301) and a motor gear (302). The main components of the water absorption module (200) are located on the other side of the main frame relative to the rag rotation module (100). The drive mechanism (300) is connected to the rag rotation module (100). When the rag mopping device without dead angles is working... The water spraying module (400) sprays cleaning liquid onto the ground or facade. The driving mechanism causes the large gear (109) to rotate. The rotation of the large gear (109) causes the support end (104B) and suction end (104C) of the curved suction tube to rotate around the central axis of the large gear (109), which in turn causes the curved triangular base (102) to revolve around the large gear (109). While the rotating gear set and gear shaft (110) revolve around the central axis of the large gear (109), the fixed sun gear (107) meshes with the gear in the gear set, causing the rotating gear set to rotate around the inner hole of the spoke of the large gear (109). The gear in the gear set meshes with the fixed gear (103) of the base, causing the curved triangular base (102) to rotate around its own geometric center.The wiper (101) revolves around the curved suction tube (104), and the suction module (200) works in conjunction with the curved suction tube (104) to form a suction channel.

2. The cloth rotating module (100) in the no-dead-angle cloth mopping device according to claim 1, characterized in that... The squeegee (101), the curved triangular base (102), and the rag are combined as a cleaning terminal. The squeegee (101) includes a shaft hole (1011) fixed to the suction port and located at the geometric center of the squeegee, a fixing plate (1012) covering the shaft hole, a squeegee strip (1013) extending outward, and a reinforcing rib (1014). The curved triangular base (102) has a circular hole in the center, and ventilation windows are arranged around the circular hole. The outer contour of the curved triangular base (102) is fitted. The rag is a curved triangular shape of the same type and is fixed to the side of the curved triangular base (102) close to the ground or the vertical surface. The area of ​​the rag with the same size as the suction port of the curved suction tube (104) is cut off from the geometric center of the rag.

3. The cloth rotating module (100) in the no-dead-angle cloth mopping device according to claim 1, characterized in that... The ratio of the number of teeth between the sun gear (107) and the fixed gear (103) on the chassis is 4:

3. The rotating gear set adopts a double gear, in which the second reversing double gear (106) meshes with the sun gear (107) to make the gear shaft (110) rotate around the inner hole of the spoke of the large gear (109). The first reversing gear (105) meshes with the fixed gear (103) on the chassis, driving the curved triangular chassis (102) to rotate around its own geometric center; or a long cylindrical gear is used to mesh with the sun gear (107) and the fixed gear (103) on the chassis respectively.

4. The cloth rotating module (100) in the no-dead-angle cloth mopping device according to claim 1, characterized in that... The curved straw (104) is inverted H-shaped. The curved straw has a suction end (104C), a support end (104B) and an outlet end (104A). The suction end passes through the curved triangular base (102) and the wiper frame (101) and extends close to the ground. The outlet end (104A) passes through the main frame and is directly connected to the sewage collection tank (201).

5. The mopping and washing device without dead angles according to claim 1, characterized in that, The motor output shaft of the motor module (301) in the drive mechanism (300) is fixedly connected to the motor gear (302). One or more cloth rotating modules (100) are set according to the usage environment. When the motor drives a cloth rotating module (100) alone, the motor gear (302) is externally meshed with the large gear (109). When the motor drives multiple cloth rotating modules (100), the motor module (301) is used in conjunction with the gear set for driving, or a separate motor is configured for each cloth rotating module (100) to drive it alone. The curved triangular cloth can also be combined with the traditional round cleaning chassis for cleaning.

6. The water absorption module (200) in the mopping device with no dead angles according to claim 1 comprises one of the following: a sewage collection tank (201), a water absorption impeller (202), an impeller motor fixing frame (203), an impeller motor (204), an impeller motor cover plate (205), a sewage tank (206), or a sewage discharge pipe, characterized in that... The sewage collection tank (201) is fixed above the main frame, with a groove in the middle for holding the water-absorbing impeller (202); an impeller motor mounting bracket (203) is provided above the sewage collection tank (201), in which the water-absorbing impeller (202) is mounted; a noise-proof filling layer is provided in the impeller motor mounting bracket (203); an impeller motor cover plate (205) is fixed on the impeller motor mounting bracket (203), with a slot and mounting hole in the middle for placing the impeller motor (204); a sewage outlet is provided at the lowest point of the sewage collection tank (201); the outlet end (104A) of the curved suction pipe passes through the main frame and is directly connected to the sewage collection tank (201); a sealing ring is provided between the main frame and the sewage collection tank (201).

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