CN118148422A - Swimming pool cleaning robot - Google Patents

Abstract

The invention provides a swimming pool cleaning robot. The swimming pool cleaning robot comprises a main body, a cleaning travelling mechanism and a travelling driving mechanism, wherein the cleaning travelling mechanism comprises a roller and a cleaning piece, the roller is rotatably arranged at the front part of the main body around a first axis extending left and right, the cleaning piece is arranged on the surface of the roller, a driven wheel is arranged at the rear part of the main body, the travelling driving mechanism comprises a travelling motor and a travelling transmission assembly, the travelling motor is arranged on the main body, the travelling transmission assembly is in transmission connection between a travelling motor driving shaft and the roller, and the roller is rotatably driven by the travelling motor to drive the main body to travel. When the swimming pool cleaning robot walks, the cleaning pieces on the roller can clean synchronously, and the structure is simplified by integrating the walking and cleaning functions in the same mechanism. The cleaning piece is fixed on the roller and coaxially rotates with the roller, so that the transmission stage number of the walking transmission assembly is reduced, the transmission structure is simpler, the probability of failure in the transmission process is reduced, and the manufacturing and maintenance cost is reduced.

Description

Swimming pool cleaning robot

Technical Field

The invention relates to the field of swimming pool cleaning equipment, in particular to a swimming pool cleaning robot.

Background

Swimming pools are the sites where people engage in swimming. Some impurities, such as hair, weeds, leaves, small stones, are inevitably present in swimming pools during use. The swimming pool cleaning robot can clean the swimming pool through the cleaning member on the swimming pool cleaning robot.

Existing pool cleaning robots typically include a motor, a transmission assembly, a drive wheel, and a cleaning assembly. The driving wheel and the cleaning assembly are connected to the driving shaft of the motor through a transmission assembly. When the swimming pool cleaning robot works, the motor drives the driving wheel to rotate through the transmission component, so that the swimming pool cleaning robot is driven to move forwards, backwards or turn. Meanwhile, the driving force of the motor is required to be transmitted to the cleaning assembly by the transmission assembly, so that the swimming pool cleaning robot can clean the swimming pool in the moving process by the cleaning assembly.

Because the motor needs to drive the driving wheel and the cleaning component to work simultaneously, the structure of the transmission component is complex, parts are more, and impurities at the bottom of the swimming pool are likely to be involved in the transmission component in the working process of the robot, so that the probability of failure of the transmission component is increased. Further, the number of parts is large, which increases the number of assembly steps and the processing cost.

Disclosure of Invention

According to one aspect of the present invention, a pool cleaning robot is provided. The swimming pool cleaning robot comprises a main body, a cleaning travelling mechanism and a travelling driving mechanism, wherein the cleaning travelling mechanism comprises a roller and a cleaning piece, the roller is rotatably arranged at the front part of the main body around a first axis extending left and right, the cleaning piece is arranged on the surface of the roller, a driven wheel is arranged at the rear part of the main body, the travelling driving mechanism comprises a travelling motor and a travelling transmission assembly, the travelling motor is arranged on the main body, the travelling transmission assembly is in transmission connection between a driving shaft of the travelling motor and the roller, and the roller is rotatable under the driving of the travelling motor so as to drive the main body to travel.

According to the swimming pool cleaning robot, the cleaning pieces are arranged on the roller for walking, the swimming pool cleaning robot is driven to walk in a rolling mode, meanwhile, the cleaning pieces on the cleaning pieces can clean synchronously, and the structure of the swimming pool cleaning robot can be simplified by integrating the walking and cleaning functions in the same mechanism. Moreover, the cleaning piece is fixed on the roller and coaxially rotates with the roller, so that the transmission stage number of the walking transmission assembly can be obviously reduced, the transmission structure is simpler, the probability of failure in the transmission process is reduced, the cost of producing, manufacturing and maintaining the swimming pool cleaning robot is reduced, and the cost reduction and synergy are realized.

The traveling transmission assembly comprises a first gear coaxially connected with a driving shaft of the traveling motor, a second gear coaxially connected with the roller, and a transmission belt sleeved on the first gear and the second gear. The structure of the walking transmission assembly is simpler through two-stage transmission of the gears and the transmission belt; moreover, the driving belt can make the operation more stable and noiseless. Meanwhile, the structure can also conveniently adjust the distance between the driving shaft of the walking motor and the axis of the roller, so that the parts on the swimming pool cleaning robot, which are positioned around the walking driving mechanism and the cleaning walking mechanism, are more flexible in the position of the main body.

The main body includes a housing, a pair of mounting portions provided at both sides of a front face of the housing, respectively, the drum rotatably connected between the pair of mounting portions about a first axis, the second gear located outside the pair of mounting portions, the travel motor provided in the housing, and the first gear connected with a driving shaft of the travel motor outside the housing. In this way, the belt is connected to the first gear and the second gear on the outer side of the housing and the pair of mounting portions. The first gear is arranged outside the shell, the second gear is arranged outside the installation part, and the shell does not need to be opened when the walking transmission assembly is maintained, so that the walking transmission assembly is more convenient to assemble, disassemble and maintain.

The body further illustratively includes a cover plate coupled to the outer side of the housing, the travel drive assembly being located between the cover plate and the housing. So set up, the apron can protect walking drive assembly to a certain extent, avoids walking drive assembly to collide with pool wall or other foreign matter in the way of marcing, has reduced the risk of walking drive assembly damage. Moreover, the cover plate can shield the walking transmission assembly, so that the appearance of the swimming pool cleaning robot is more attractive, and the experience of a user is improved.

The driving shafts of the walking motor are a pair, the driving shafts extend to two sides of the main body along a second axis parallel to the first axis and face opposite directions, the walking transmission assemblies are two groups and are respectively located on two sides of the main body, and the driving shafts are respectively connected with the roller in a transmission mode through the walking transmission assemblies on the corresponding sides. The arrangement is that one walking motor can synchronously drive the two groups of walking transmission components to run on the two sides of the roller, so that the walking of the roller is more balanced; moreover, a pair of shafts are arranged on one walking motor to drive two groups of walking transmission assemblies to run, and compared with the arrangement that one group of walking transmission assemblies are respectively driven by two walking motors to run, the number of the walking motors can be saved, the manufacturing cost of the swimming pool cleaning robot is reduced, and the driving is more efficient.

Illustratively, the drum includes: the shaft rod extends along the first axis, and two ends of the shaft rod are fixed on the main body; the shaft sleeve is sleeved on the shaft rod and can rotate around the shaft rod, and the cleaning piece is arranged on the surface of the shaft sleeve; and a pair of end caps respectively covering the two ends of the shaft sleeve, limiting the cleaning piece between the pair of end caps, and connecting the walking transmission assembly to one or both of the pair of end caps. Thus, by arranging the shaft sleeve, the shaft rod and the end cap, the structure of the roller is relatively simple, and the roller can easily rotate around the first axis by virtue of the structure; moreover, the end cap can also play a protective role on the shaft sleeve, the traveling transmission assembly can be directly connected to the end cap, the shaft sleeve is prevented from being processed and modified so as to be connected with the traveling transmission assembly, the modification cost is saved, and the service life of the shaft sleeve can be prolonged. The structure of the end cap is small relative to the shaft sleeve, the processing and the manufacturing are more convenient, and even if the end cap is damaged, the replacement or the processing of a new end cap is easier than that of the shaft sleeve, thereby being convenient for maintenance.

The shaft sleeve includes a first shaft sleeve and a second shaft sleeve disposed in sequence along a first axis, the first shaft sleeve having a first end adjacent the second shaft sleeve and a second end connected to one of a pair of end caps, the second shaft sleeve having a third end adjacent the first shaft sleeve and a fourth end connected to the other of the pair of end caps, a bearing disposed within each of the pair of end caps, each of the pair of end caps connected to the shaft by the bearing. The shaft sleeve and the shaft lever are more convenient to install, and the effect is more obvious especially under the condition that the shaft lever is longer; furthermore, even if the first shaft sleeve or the second shaft sleeve is worn, only the corresponding shaft sleeve is needed to be replaced, and all replacement is not needed, so that the maintenance cost is reduced; furthermore, the bearing can support the end cap on the shaft rod, so that the rotating friction force of the end cap around the shaft rod is reduced, the abrasion of the end cap is reduced, and the roller can stably and reliably run for a long time.

Illustratively, the cleaning elements include a first cleaning element removably disposed about the first sleeve and a second cleaning element removably disposed about the second sleeve. Divide into two sections with the cleaning member and wind respectively and establish on the axle sleeve that corresponds, can make the installation of first cleaning member and second cleaning member lighter, it is more convenient to change.

Illustratively, the body includes a housing having a water inlet at a bottom, a water outlet at a top, and a filter channel communicating between the water inlet and the water outlet, the pool cleaning robot further including a filter mechanism disposed within the housing, the filter mechanism including a filter element and a water pump motor, the filter element being positioned on the filter channel, the water pump motor for driving water flow within the filter channel, the water outlet being sloped rearwardly. So set up, swimming pool cleaning robot is in advancing and cleaning the in-process, and the cleaning member can clean debris backward to the bottom of main part, like this, the water inlet that sets up in the bottom more does benefit to the sewage that will mix with debris and inhales the water inlet, and then gets into the filtration passageway, and sewage is filtered by the filter element in the filtration passageway, and the debris of filtration is collected in filtering mechanism, and then makes debris filtered by filtering mechanism and collect. The filtered clean water is sprayed backwards from the inclined water outlet, and the generated recoil action provides assistance for the swimming pool cleaning robot to walk forwards. The power of the travel drive can thereby be reduced. Moreover, when the swimming pool cleaning robot cleans the pool wall, the recoil action generated by the sprayed clean water can generate upward component force and direction component force towards the pool wall, the upward component force can resist the dead weight of the swimming pool cleaning robot, and the component force towards the pool wall can press the swimming pool cleaning robot on the pool wall, so that the swimming pool cleaning robot is facilitated to climb the pool wall.

Illustratively, the water outlet is angled between 45 degrees and 75 degrees from horizontal. For example, the included angle α may be 45 degrees, 50 degrees, 55 degrees, 60 degrees, 65 degrees, 70 degrees, 75 degrees, etc., or may be any value therebetween. So set up, swimming pool cleaning robot climbs the wall effect better.

Illustratively, the direction of extension of the drive shaft of the water pump motor coincides with the direction of extension of the water outlet. By the arrangement, the working efficiency of the water pump motor can be improved, the speed of spraying the pool water from the water outlet can be higher, and further walking and wall climbing can be better assisted.

Illustratively, the travel motor and the water pump motor are both disposed within a sealed enclosure that is housed within the main body, and a power source is also disposed within the sealed enclosure that is connected to the travel motor and the water pump motor to power the travel motor and the water pump motor. So set up, the sealed cowling can protect walking motor, water pump motor and battery not to collide with, by the pond water immersion, improved swimming pool cleaning robot's security performance.

Illustratively, the front portion of the body is provided with a front wheel. By the arrangement, the cleaning piece below the roller can be prevented from being pressed on the pool bottom to influence the cleaning effect. In addition, the abrasion degree of the cleaning piece can be reduced to a certain extent, and the frequency of replacing the cleaning piece is reduced.

Illustratively, the driven wheel is a universal wheel. So set up, the follower can carry out 360 rotations, and when the front portion of main part is moved forward or is moved backward or even turns round under the effect of driving force, the rear portion of main part can be more nimble advance with the front portion is synchronous, move backward or turn.

In the summary, a series of concepts in a simplified form are introduced, which will be further described in detail in the detailed description section. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.

Advantages and features of the invention are described in detail below with reference to the accompanying drawings.

Drawings

The following drawings are included to provide an understanding of the invention and are incorporated in and constitute a part of this specification. Embodiments of the present invention and their description are shown in the drawings to explain the principles of the invention. In the drawings of which there are shown,

FIG. 1 is an isometric view of a pool cleaning robot (cover plate not shown) according to an exemplary embodiment of the present invention;

FIG. 2 is another angular isometric view of the pool cleaning robot shown in FIG. 1 (cover plate not shown);

FIG. 3 is a bottom view of the pool cleaning robot shown in FIG. 1 (cover plate not shown);

FIG. 4 is a cross-sectional view of the pool cleaning robot taken along line A-A of FIG. 3;

FIG. 5 is an exploded view of the pool cleaning robot shown in FIG. 1;

FIG. 6 is an exploded view of a portion of the construction of the pool cleaning robot shown in FIG. 1; and

Fig. 7 is an exploded view of a cleaning travel mechanism of the pool cleaning robot shown in fig. 1.

Wherein the above figures include the following reference numerals:

100. a swimming pool cleaning robot; 200. a main body; 210. a housing; 201. a water inlet; 202. a water outlet; 300. cleaning a travelling mechanism; 310. a roller; 311. a shaft lever; 312. a shaft sleeve; 312a, a first sleeve; 301. a first end; 302. a second end; 312b, a second sleeve; 303. a third end; 304. a fourth end; 305. a weight reduction groove; 313. a bearing; 314. an end cap; 316. a bearing; 320. a cleaning member; 321. a first cleaning member; 322. a second cleaning member; 400. a walking driving mechanism; 410. a walking motor; 420. a walking transmission assembly; 421. a first gear; 422. a second gear; 423. a transmission belt; 500. a driven wheel; 600. a mounting part; 700. a cover plate; 810. a water pump motor; 811. a drive shaft of a water pump motor; 820. an impeller; 830. a filter; 910. a sealing cover; 911. an upper seal cover; 912. a lower seal cap; 913. a seal ring; 920. and a power supply.

Detailed Description

In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the invention may be practiced without one or more of these details. In other instances, well-known features have not been described in detail in order to avoid obscuring the invention.

In the following description, a detailed structure will be presented for a thorough understanding of the present invention. It will be apparent that embodiments of the invention are not limited to the specific details set forth in the claims. Preferred embodiments of the present invention are described in detail below, however, the present invention may have other embodiments in addition to these detailed descriptions.

According to one aspect of the present application, a pool cleaning robot is provided. As shown in fig. 1-3, the pool cleaning robot 100 can include a main body 200, a cleaning running gear 300, and a running drive mechanism 400. The cleaning traveling mechanism 300 and the traveling driving mechanism 400 are both disposed on the main body 200, and the traveling driving mechanism 400 can drive the cleaning traveling mechanism 300 to work, so that the cleaning traveling mechanism 300 cleans the pool bottom and/or the pool wall while traveling, thereby cleaning dirt attached to the pool bottom and/or the pool wall and being involved under the pool cleaning robot 100 as the pool cleaning robot 100 travels. The body 200 may include a housing 210. The case 210 may have various shapes such as a substantially rectangular parallelepiped shape, a boat shape, a wedge shape with a narrow front and a wide rear, and the like, and is not limited thereto. The housing 210 may be provided with a water inlet 201 (see fig. 3) and a water outlet 202 (see fig. 1-2). The body 200 may also include a filter mechanism disposed within the housing 210. The filtering mechanism continuously sucks in sewage under the pool cleaning robot 100 and filters impurities therein during the running of the pool cleaning robot 100, and the filtered water is sprayed out from the water outlet 202. In this manner, the pool cleaning robot 100 can clean the pool bottom and/or walls of the pool and filter dirt in the water during walking. After the cleaning walking mechanism 300 is completed, the filtering mechanism is only required to be cleaned.

As shown in fig. 7, the cleaning traveling mechanism 300 may include a drum 310 and a cleaning member 320. In some embodiments, the drum 310 may be generally cylindrical. Other suitable structures for the drum 310 may be used, and are not limited herein. The drum 310 may have a smooth outer surface or may have a rougher outer surface. The cleaning elements 320 may employ various cleaning elements 320 known in the art or that may occur in the future, including, but not limited to, nylon brushes, copper wire brushes, polypropylene brushes, sisal brushes, and the like. The cleaning member 320 may have various shapes such as a substantially sheet shape, a cylindrical shape, and the like, and is not limited thereto. The cleaning members 320 may be disposed on the surface of the drum 310 by various means of attachment known in the art or that may occur in the future, including, but not limited to, adhesive, snap fit, ligature, interference fit, etc. When the outer surface of the drum 310 is rough, the cleaning member 320 may be sleeved on the drum 310, so that the rough outer surface of the drum 310 may increase friction between the drum 310 and the cleaning member 320, making the connection therebetween more firm. In some embodiments, the cleaning elements 320 may be generally flexible sheets, and the cleaning elements 320 may be directly wrapped around the surface of the drum 310 by the above-described attachment. Typically, the sheet-shaped cleaning member 320 may be provided with adhesive members or catching members at both ends thereof. After the cleaning member 320 is wound around the drum 310, the adhesive or the catching member at both ends may be coupled to each other so that the cleaning member 320 may be well covered on the surface of the drum 310. Moreover, after a period of use, the cleaning elements 320 may also be replaced. In other embodiments, the cleaning member 320 may have a cavity shape adapted to the drum 310, and the cavity size of the cleaning member 320 may be equal to or slightly smaller than the size of the drum 310, so that the cleaning member 320 may be directly sleeved on the outer wall of the drum 310 from one end of the drum 310 and fixed to the drum 310.

The drum 310 may be rotatably disposed at the front of the body 200 about a first axis extending left and right. When the pool cleaning robot 100 advances, the direction corresponding to the advancing direction may be understood as the front direction of the pool cleaning robot 100. The term "front" as used herein and hereinafter is intended to refer to the portion of the body 200 that is located toward the front. The term "rear" is used hereinafter to refer to the location on the body 200 near the rear. The azimuthal term "left and right" as used herein and hereinafter is generally understood to mean a direction perpendicular to the anterior direction.

As shown in fig. 1 and 6, the travel drive mechanism 400 may include a travel motor 410 and a travel drive assembly 420. The walk motor 410 may employ various motors known in the art or that may occur in the future, including but not limited to a DC motor. The walk motor 410 may be provided on the main body 200. In some embodiments, the travel motor 410 may be disposed inside the housing 210. The travel drive assembly 420 may be drivingly connected between the drive shaft of the travel motor 410 and the drum 310. The drive connection may take the form of a variety of known or future-occurring drive connections including, but not limited to, belt drives, gear drives, chain drives, worm drives, screw drives, and the like. The drum 310 may be rotatable under the driving of the traveling motor 410 to drive the main body 200 to travel.

As shown in fig. 3, the rear of the body 200 may be provided with a driven wheel 500. The passive wheel 500 may provide support at the rear of the body 200. The passive wheel 500 may employ various wheels known or likely to occur in the future, including but not limited to directional wheels, universal wheels, and the like. The number of the driven wheels 500 may be one or more. When there are two driven wheels 500, the driven wheels 500 may be symmetrically disposed with respect to the main body 200 of the pool cleaning robot 100. Preferably, the driven wheel 500 may be a universal wheel. So arranged, the driven wheel 500 can rotate 360 degrees, and when the front part of the main body 200 moves forward or backward or even turns under the action of the driving force, the rear part of the main body 200 can move forward, backward or turn synchronously with the front part.

When the pool cleaning robot 100 is required to clean the pool, the travel motor 410 may be activated, and the power of the travel motor 410 is transmitted to the drum 310 through the travel transmission assembly 420, so that the drum 310 may rotate about the first axis, and the pool cleaning robot 100 moves forward or backward according to the rotation of the drum 310 in different directions. The cleaning member 320 is provided on the surface of the drum 310, and the cleaning member 320 can clean the bottom and/or the wall of the swimming pool while rotating synchronously with the drum 310. The swimming pool cleaning robot 100 of the present application can clean the swimming pool cleaning robot 100 simultaneously by arranging the cleaning members 320 on the roller 310 for walking, and the roller 310 drives the swimming pool cleaning robot 100 to walk, and the structure of the swimming pool cleaning robot 100 can be simplified by integrating the walking and cleaning functions in the same mechanism. Moreover, the cleaning member 320 is fixed on the drum 310 and rotates coaxially with the drum 310, so that the number of transmission stages of the traveling transmission assembly 420 can be significantly reduced, the transmission structure is simpler, the probability of failure in the transmission process is reduced, the cost of manufacturing and maintaining the swimming pool cleaning robot 100 is reduced, and the cost reduction and synergy are realized.

For example, as shown in fig. 1 to 3, the traveling gear assembly 420 may include a first gear 421, a second gear 422, and a belt 423. The first gear 421 may employ various gears known in the art or which may occur in the future, including but not limited to cylindrical gears, bevel gears, elliptical gears, etc., without limitation. The second gear 422 may also employ various gears known in the art or that may occur in the future including, but not limited to, spur gears, bevel gears, elliptical gears, etc., as not limited herein. The first gear 421 may have the same or different structure as the second gear 422, and is not limited herein. The belt 423 may employ various belts 423 known in the art or that may occur in the future, including but not limited to belts, chains, etc. The first gear 421 may be coaxially connected with the driving shaft of the walk motor 410. The second gear 422 may be coaxially coupled with the drum 310. The driving belt 423 may be sleeved on the first gear 421 and the second gear 422. By the arrangement, the structure of the walking transmission assembly 420 is simpler through two-stage transmission of the gears and the transmission belt; in addition, the driving belt 423 can make the operation smoother and noiseless. At the same time, the structure can also facilitate the adjustment of the distance between the drive shaft of the travel motor 410 and the axis of the drum 310, so that the parts of the pool cleaning robot 100 located around the travel drive mechanism 400 and the cleaning travel mechanism 300 are more flexible in the positions provided on the main body 200.

As illustrated in fig. 1 and 7, a pair of mounting portions 600 may be provided at both sides of the front of the case 210, respectively. The drum 310 may be rotatably connected between a pair of mounting parts 600 about a first axis. The pair of mounting parts 600 can limit and support the left and right end portions of the drum 310, preventing the drum 310 from being displaced in the direction along the first axis. Meanwhile, the pair of mounting parts 600 may also play a certain limiting role on the cleaning member 320 on the drum 310 in the extending direction of the first axis. The second gear 422 may be located outside of the pair of mounting portions 600. The travel motor 410 may be disposed within the housing 210. The first gear 421 may be outside the housing 210 and connected with a driving shaft of the walk motor 410. The belt 423 is connected to the first gear 421 and the second gear 422 outside the housing 210 and the pair of mounting portions 600. The first gear 421 is disposed outside the housing 210 and the second gear 422 is disposed outside the mounting portion 600, so that the housing 210 does not need to be opened during maintenance or servicing of the traveling transmission assembly 420, and the assembly, disassembly and maintenance of the traveling transmission assembly 420 are more convenient.

Illustratively, as shown in fig. 5, the body 200 may further include a cover plate 700. The cover plate 700 may be coupled to the outer side of the case 210. The travel drive assembly 420 may be located between the cover plate 700 and the housing 210. In some embodiments, cover plate 700 may substantially cover traveling gear assembly 420. In other embodiments, the cover plate 700 may cover an area that is substantially larger than the area covered by the traveling gear assembly 420. The cover plate 700 may have various structures as long as it can substantially cover the traveling gear assembly 420, and is not limited thereto. So set up, apron 700 can protect walking drive assembly 420 to a certain extent, avoids walking drive assembly 420 to collide with pool wall or other foreign objects in the way of going, has reduced walking drive assembly 420 and has damaged the risk. Moreover, the cover plate 700 can shield the walking transmission assembly 420, so that the appearance of the swimming pool cleaning robot 100 is more attractive, and the experience of a user is improved.

Illustratively, the drive shafts of the travel motor 410 may be a pair (not shown). A pair of driving shafts extend to both sides of the main body 200 along the second axis and in opposite directions. The second axis may be parallel to the first axis. The walking transmission assemblies 420 may be provided in two groups and are respectively located at both sides of the main body 200. A pair of driving shafts may be in driving connection with the drum 310 through the corresponding side traveling transmission assemblies 420, respectively. A pair of driving shafts may synchronously drive two sets of traveling transmission assemblies 420, that is, one traveling motor 410 synchronously drives two sets of traveling transmission assemblies 420 to synchronously operate. So arranged, one traveling motor 410 can synchronously drive the traveling motor to operate on two sides of the roller 310 through two groups of traveling transmission assemblies 420, so that the traveling of the roller 310 is more balanced; moreover, a pair of shafts are arranged on one traveling motor 410 to drive two groups of traveling transmission assemblies 420 to run, so that compared with the arrangement that two traveling motors respectively drive one group of traveling transmission assemblies to run, the number of the traveling motors 410 can be saved, the manufacturing cost of the swimming pool cleaning robot 100 is reduced, and the driving is more efficient.

Illustratively, as shown in fig. 7, the drum 310 may include a shaft 311, a sleeve 312, and a pair of end caps 314. The shaft 311 may extend along a first axis. Both ends of the shaft 311 may be fixed to the body 200, for example, to a pair of mounting portions 600. It will be appreciated that there is no relative displacement between the shaft 311 and the body 200, and that the shaft 311 does not rotate about the first axis. The sleeve 312 may be sleeved on the shaft 311. The number of the bushings 312 may be one or more, and is not limited herein. The sleeve 312 is rotatable relative to the shaft 311. Optionally, a bearing 313 may be provided between the sleeve 312 and the shaft 311. The bearing 313 may employ various bearings known in the art or which may occur in the future, including but not limited to rolling bearings, deep groove ball bearings, and the like. Preferably, the bearing 313 may be a deep groove ball bearing.

As shown in fig. 7, the cleaning member 320 may be provided on a surface of the sleeve 312. A pair of end caps 314 may be respectively snapped over the ends of the sleeve 312. A pair of end caps 314 may retain the cleaning elements 320 therebetween. The end cap 314 may have a variety of configurations, not limited herein. The end cap 314 may be fitted over the sleeve 312 or may be inserted into the sleeve 312. In one embodiment, end cap 314 may have a base plate and a boss that may be embedded into the interior of sleeve 312. The base plate may abut against an end surface of the sleeve 312 side. When the cleaning member 320 is attached to the sleeve 312, the substrate may abut against the end face of the cleaning member 320. After capping, the sleeve 312 and the pair of end caps 314 may be secured and may not have relative displacement therebetween. The travel drive assembly 420 may be connected to one or both of the pair of end caps 314. When the walking drive assembly 420 is a set, it may be attached to one of the pair of end caps 314. When the traveling gear assemblies 420 are two sets, the two sets of traveling gear assemblies 420 may be connected to a pair of end caps 314, respectively. In this manner, the travel drive assembly 420 may transmit drive force to the end cap 314, which in turn may drive force through the end cap 314 onto the hub 312, while the shaft 311 is stationary relative to the body 200, and the travel drive assembly 420 may rotate the hub 312 relative to the shaft 311.

Thus, by providing the sleeve 312, the shaft 311 and the end cap 314, the structure of the drum 310 is relatively simple, by means of which the drum 310 can be easily rotated about the first axis; moreover, the end cap 314 can also protect the sleeve 312, and the traveling transmission assembly 420 can be directly connected to the end cap 314, so that the sleeve 312 is prevented from being modified to be connected with the traveling transmission assembly 420, the modification cost is saved, and the service life of the sleeve 312 is also prolonged. The end cap 314 is smaller than the sleeve 312, and is easier to manufacture, replace or manufacture a new end cap 314 than the sleeve 312, even if the end cap 314 is damaged, and is easier to maintain.

Illustratively, as shown in fig. 7, the sleeve 312 may include a first sleeve 312a and a second sleeve 312b. The first sleeve 312a may have the same length as the second sleeve 312b or may have different lengths, which is not limited herein. Preferably, the first sleeve 312a may be equal in length to the second sleeve 312b. The first sleeve 312a and the second sleeve 312b may be disposed in sequence along the first axis. In this way, when the shaft sleeve 312 is mounted, the first shaft sleeve 312a and the second shaft sleeve 312b can be mounted at both ends of the shaft rod 311, so that the mounting is more convenient. The first sleeve 312a has a first end 301 and a second end 302. The first end 301 is adjacent to the second hub 312b. The second end 302 is coupled to one of a pair of end caps 314. The second hub 312b has a third end 303 and a fourth end 304. The third end 303 is adjacent to the first sleeve 312 a. The fourth end 304 is connected to the other of the pair of end caps 314. Alternatively, the first end 301 and the third end 303 may be connected to the shaft 311 by bearings 313, respectively. Alternatively, the first end 301 and the third end 303 may be directly plugged into each other. Bearings 316 may be disposed within each end cap 314. The bearings 316 may employ various bearings known in the art or that may occur in the future, including but not limited to rolling bearings, deep groove ball bearings, and the like. Preferably, the bearings 316 may be deep groove ball bearings. The bearing 316 may be the same type of bearing as the bearing 313 or may be a different type of bearing. Each end cap 314 may be connected to shaft 311 by bearings 316. So arranged, the shaft sleeve 312 and the shaft lever 311 are more convenient to install, and the effect is more effective especially under the condition that the shaft lever 311 is longer

Is remarkable; furthermore, even if the first shaft sleeve 312a or the second shaft sleeve 312b is worn, only the shaft sleeve corresponding to 5 needs to be replaced, and all replacement is not needed, so that the maintenance cost is reduced; furthermore, the bearings 316 may

Supporting the end cap 314 on the shaft 311 reduces rotational friction of the end cap 314 around the shaft 311, reduces wear of the end cap 314, and allows the drum 310 to operate stably and reliably for a long period of time.

Illustratively, as shown in FIG. 7, the cleaning member 320 may include a first cleaning member 321 and a second cleaning member

Cleaning member 322. The first cleaning member 321 is detachably wound around the first sleeve 312 a. The second cleaning 0 member 322 is removably attachable around the second hub 312 b. The cleaning member 320 is divided into two sections to be wound around

On the corresponding shaft sleeve, the first cleaning piece 321 and the second cleaning piece 322 can be installed more easily and replaced more conveniently.

For example, the first sleeve 312a and the second sleeve 312b may be provided with weight-reducing grooves 305, respectively. By this arrangement, the weight of the first sleeve 312a and the second sleeve 312b can be reduced, and the load of the 5-way motor 410 can be reduced. For example, the first sleeve 312a may be coupled to the second sleeve 312b

Together. In some embodiments, a groove may be provided on an end surface of the first end 301. A protrusion may be provided on an end surface of the third end 303. The protrusions may be inserted into the grooves. So configured, the first sleeve 312a may be synchronized with and securely connected to the second sleeve 312 b.

As described above, as shown in fig. 1 to 3, the housing 210 of the main body 200 may be provided with the 0 water inlet 201, the water outlet 202, and the filtering passage. The water inlet 201 may be located at the bottom of the housing 210

A portion. The water outlet 202 may be located at the top of the housing 210. The water inlet 201 may be generally circular, square, oval, etc., and is not limited herein. The water outlet 202 may also be generally circular, square, oval, etc., and is not limited herein. The filtering channel can be communicated with the water inlet 201 and the water outlet 202

Between them. The filter passage may be formed by the internal frame structure of the housing 210, or may be formed by a tube provided 5 within the housing 210, or the like. The filtering channels may be substantially rectilinear, S-shaped, U-shaped, etc

The shape is not limited herein. The cleaning member 320 cleans the debris rearward to the bottom of the main body 200 during the forward movement and the cleaning of the swimming pool cleaning robot 100, so that the water inlet 201 provided at the bottom is more advantageous to suck the sewage mixed with the debris into the water inlet 201, and thus the debris is filtered and collected by the filtering mechanism.

0 As shown in fig. 6, the filter mechanism may include a filter 830 and a water pump motor 810. The filter 830 may be located on the filter channel. In some embodiments, filter 830 may comprise a filter basket. The filtered debris can collect in the filter basket and the user can periodically clean the filter basket to clean the debris out of the pool cleaning robot 100. The filter basket can be provided with a stainless steel filter screen, a PP cotton filter screen and the like, and is not limited herein. The drive shaft 811 of the water pump motor 810 may extend into the filter passage. An impeller 820 may be connected to a drive shaft 811 of the water pump motor 810. The water pump motor 810 is used to drive the flow of water in the filter passage. The specific filtering process is as follows: the water pump motor 810 drives the impeller 820 to rotate, and negative pressure can be formed in the filtering channel after the impeller 820 rotates, so that pool water in the swimming pool is continuously sucked into the filtering channel through the water inlet 201 at the bottom of the main body 200 under the action of external water pressure, the pool water is filtered in the filtering channel by the filtering piece 830, filtered impurities are collected in the filtering mechanism, and filtered purified water is discharged from the water outlet 202 at the top of the main body 200 under the action of the impeller 820.

As shown in fig. 4, the water outlet 202 may be inclined rearward. The filtered clean water is sprayed rearward from the angled water outlet 202, and the resulting recoil action provides assistance to the forward travel of the pool cleaning robot 100. The power of the travel drive 400 can thereby be reduced. Moreover, when the pool cleaning robot 100 cleans the pool wall, the kickback action of the sprayed clean water generates an upward component force and a component force towards the pool wall, the upward component force can resist the self weight of the pool cleaning robot 100, and the component force towards the pool wall can press the pool cleaning robot 100 on the pool wall, so that the pool cleaning robot 100 is facilitated to climb the wall. It should be noted that when the pool cleaning robot 100 is retreated, it is considered to suspend the filtering action of the water, i.e., turn off the water pump motor 810.

Illustratively, as shown in fig. 4, the angle α of the water outlet 202 with respect to the horizontal may be between 45 degrees and 75 degrees. For example, the included angle α may be 45 degrees, 50 degrees, 55 degrees, 60 degrees, 65 degrees, 70 degrees, 75 degrees, etc., or may be any value therebetween. So configured, the pool cleaning robot 100 provides a better wall climbing effect.

Illustratively, the direction of extension of the drive shaft 811 of the water pump motor 810 may coincide with the direction of extension of the water outlet 202. By the arrangement, the working efficiency of the water pump motor 810 can be improved, the speed of spraying the pool water from the water outlet 202 can be higher, and further walking and wall climbing can be better assisted.

Illustratively, as shown in FIG. 6, both the travel motor 410 and the water pump motor 810 may be disposed within the sealed enclosure 910. The sealing cap 910 may be accommodated within the main body 200. A power source 920 may also be provided within the containment cap 910. The power source 920 may be any variety of power sources 920 known in the art or that may occur in the future, including, but not limited to, lead storage batteries, lithium batteries, and the like. A power source 920 may be connected to the walk motor 410 and the water pump motor 810 to supply power to the walk motor 410 and the water pump motor 810. In some embodiments, the boot seal 910 may include an upper boot seal 911 and a lower boot seal 912. The lower boot seal 912 may have a mounting cavity. The walk motor 410, the water pump motor 810, and the power supply 920 may be provided in the installation cavity. A seal 913, e.g., an axial seal, a radial seal, may be provided between the upper seal housing 911 and the lower seal housing 912. When the power supply 920, the traveling motor 410, the water pump motor 810, and other parts to be disposed in the installation cavity are installed, the upper and lower sealing covers 911 and 912 may be coupled and sealed together. So configured, the sealing cap 910 can protect the travel motor 410, the water pump motor 810, and the battery from being knocked and immersed by the pool water, improving the safety performance of the pool cleaning robot 100.

Although the walking function can be achieved by the drum 310, the front of the body 200 may be optionally provided with additional front wheels. The front wheels may not be connected to the travel drive mechanism. The front wheel may be a passive wheel, which merely serves as an auxiliary support for the main body 200, thus not complicating the travel drive assembly 420. The bottom surface of the front wheel may be slightly lower than the bottom surface of the drum 310. With this arrangement, the cleaning members 320 under the drum 310 are prevented from being pressed against the bottom of the tub to affect the cleaning effect. Also, the degree of wear of the cleaning member 320 can be reduced to some extent, reducing the frequency of replacement of the cleaning member 320.

The present invention has been illustrated by the above-described embodiments, but it should be understood that the above-described embodiments are for purposes of illustration and description only and are not intended to limit the invention to the embodiments described. In addition, it will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that many variations and modifications are possible in light of the teachings of the invention, which variations and modifications are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (14)

1. A swimming pool cleaning robot is characterized by comprising a main body, a cleaning travelling mechanism and a travelling driving mechanism,

The cleaning travelling mechanism comprises a roller and a cleaning piece, the roller is rotatably arranged at the front part of the main body around a first axis extending leftwards and rightwards, the cleaning piece is arranged on the surface of the roller, the rear part of the main body is provided with a driven wheel,

The walking driving mechanism comprises a walking motor and a walking transmission assembly, the walking motor is arranged on the main body, the walking transmission assembly is in transmission connection between a driving shaft of the walking motor and the roller, and the roller is driven by the walking motor to rotate so as to drive the main body to walk.

2. The pool cleaning robot of claim 1, wherein the travel transmission assembly includes a first gear coaxially coupled to a drive shaft of the travel motor, a second gear coaxially coupled to the drum, and a belt sleeved on the first gear and the second gear.

3. A swimming pool cleaning robot as recited in claim 2, wherein the main body includes a housing, a pair of mounting portions are provided on both sides of a front face of the housing, respectively, the drum is rotatably coupled between the pair of mounting portions about the first axis, the second gear is located outside the pair of mounting portions,

The walking motor is arranged in the shell, and the first gear is connected with a driving shaft of the walking motor outside the shell.

4. A swimming pool cleaning robot as recited in claim 3, wherein the body further comprises a cover plate coupled to the outer side of the housing, the travel drive assembly being positioned between the cover plate and the housing.

5. A swimming pool cleaning robot as recited in claim 2, wherein the drive shafts of the travel motor are in a pair extending to opposite sides of the body along a second axis parallel to the first axis and facing in opposite directions,

The walking transmission components are two groups and are respectively positioned at two sides of the main body,

The pair of driving shafts are respectively connected with the roller in a transmission way through walking transmission assemblies at the corresponding sides.

6. A pool cleaning robot as recited in claim 1, wherein the drum includes:

a shaft extending along the first axis, both ends of the shaft being fixed to the main body;

The shaft sleeve is sleeved on the shaft rod and can rotate around the shaft rod, and the cleaning piece is arranged on the surface of the shaft sleeve; and

And the pair of end caps are respectively buckled at two ends of the shaft sleeve, the cleaning piece is limited between the pair of end caps, and the walking transmission assembly is connected to one or two of the pair of end caps.

7. The pool cleaning robot of claim 6, wherein the hub includes a first hub and a second hub disposed in sequence along the first axis,

The first sleeve having a first end adjacent the second sleeve and a second end connected to one of the pair of end caps,

The second hub has a third end adjacent the first hub and a fourth end connected to the other of the pair of end caps,

A bearing is disposed within each of the pair of end caps, each of the pair of end caps being connected to the shaft by a bearing.

8. A pool cleaning robot as recited in claim 7, wherein the cleaning member includes a first cleaning member removably secured about the first hub and a second cleaning member removably secured about the second hub.

9. A pool cleaning robot as claimed in claim 1, wherein the body includes a housing having a water inlet at a bottom, a water outlet at a top, and a filter passage communicating between the water inlet and the water outlet, the pool cleaning robot further including a filter mechanism disposed within the housing, the filter mechanism including a filter element and a water pump motor, the filter element being located on the filter passage, the water pump motor for driving water flow within the filter passage, the water outlet being inclined rearward.

10. A pool cleaning robot as claimed in claim 9, wherein the outlet is angled between 45 degrees and 75 degrees from horizontal.

11. A swimming pool cleaning robot as recited in claim 9, wherein the drive shaft of the water pump motor extends in a direction that is consistent with the direction of extension of the water outlet.

12. A swimming pool cleaning robot as recited in claim 9, wherein the travel motor and the water pump motor are both disposed within a sealed enclosure that is housed within the body, and wherein a power source is further disposed within the sealed enclosure that is connected to the travel motor and the water pump motor to power the travel motor and the water pump motor.

13. A pool cleaning robot as claimed in claim 1, wherein the front of the main body is provided with a front wheel.

14. A pool cleaning robot as claimed in claim 1, wherein the driven wheel is a castor.