Pool cleaning device

Abstract

A pool cleaning device includes a housing, a drive assembly, and a water spray housing. The housing includes a water inlet and a water outlet. The drive assembly is disposed inside the housing and includes an output shaft. The water spray assembly is rotatably disposed on the housing and is in fluid communication with the water outlet. The water spray assembly includes a water spray housing and an impeller, which is disposed in the water spray housing and is connected to the output shaft. Water is driven by the drive assembly into the water spray assembly and then ejected from the water spray assembly to drive the pool cleaning device. No additional water pump is required for the pool cleaning device. The pool cleaning device also includes a reversing blade for reversing the cleaning and an adjustment switch for controlling the cleaning path.

What is claimed is: 
     
         1 . A pool cleaning device comprising:
 a housing having a water inlet and a water outlet;   a drive assembly disposed inside the housing and having an output shaft extending at least partially through the water outlet; and   a water spray assembly rotatably coupled to the housing and in fluid communication with the water outlet,   wherein the water spray assembly includes:
 a water spray housing; and 
 an impeller disposed in the water spray housing and connected to the output shaft of the drive assembly, 
   wherein the impeller receives water through the water outlet, and the water spray housing projects the water from the impeller and out of the water spray housing and provides a driving force for the pool cleaning device.   
     
     
         2 . The pool cleaning device according to  claim 1 , wherein the housing includes a charging base, wherein the charging base includes:
 at least one base disposed at a location of a respective through hole formed in the housing;   at least one charging post extending in a vertical direction and disposed on the at least one base,   wherein the at least one charging post includes:
 a conductive rod extending through the through hole; and 
 a sealing layer disposed on the conductive rod and covering at least part of the conductive rod; 
   wherein the at least one base comprises:
 a first base having a first extension extending along a side wall of the first base; and 
 a second base spaced apart from the first base and having a second extension extending along a side wall of the second base toward the first extension; 
 wherein the first extension and the second extension are spaced apart from each other and define a slot between the first extension and the second extension. 
   
     
     
         3 . The pool cleaning device according to  claim 2 , wherein the drive assembly comprises:
 a motor housing having a first part and a second part sealingly connected to the first part; and   a motor assembly disposed within a second chamber defined by the first part and the second part;   wherein the conductive rod extends from an interior of the second chamber through the first part and is sealingly connected to the first part.   
     
     
         4 . The pool cleaning device according to  claim 3 , wherein the motor housing includes a mounting plate disposed on an inner surface of the first part of the motor hosing, wherein the mounting plate extends toward the interior of the second chamber and defines a mounting space with the first part of the motor housing; and
 wherein the motor assembly includes:
 a motor including the output shaft of the drive assembly, the output shaft extending in the vertical direction through the water outlet; 
 a PCB disposed within the mounting space and spaced away from the first part of the motor housing, the PCB and the first part of the motor housing having a sealant disposed therebetween; and 
 a battery pack comprising a battery pack housing and a battery cell located within the battery pack housing, the battery pack housing and the battery cell having a sealant disposed therebetween. 
   
     
     
         5 . The pool cleaning device according to  claim 1 , wherein the pool cleaning device is not attached to a water tube to provide the driving force to the pool cleaning device; where water from the pool is directly received in the water inlet and provides the driving force for the pool cleaning device without water provided from an external pump. 
     
     
         6 . The pool cleaning device according to  claim 1 , wherein the housing comprises an upper housing and a lower housing, wherein the water outlet is disposed in the upper housing, wherein the water inlet is disposed in the lower housing, and the upper housing and the lower housing are detachably connected to define a first chamber therein, wherein the housing defines a water flow path through the first chamber between the water inlet and the water outlet. 
     
     
         7 . The pool cleaning device according to  claim 6 , wherein the pool cleaning device further includes a handle assembly disposed on the upper housing, wherein the handle assembly comprises:
 a handle frame connected to the upper housing and extending downward toward the lower housing; and   a resilient handle disposed on and hingedly connected to the handle frame, the handle including a boss extending inwardly toward the housing;   wherein the lower housing includes a flange extending outwardly away from the housing, wherein the boss of the handle is sized and configured to correspond to the flange to selectively disassemble or assemble the upper housing and the lower housing.   
     
     
         8 . The pool cleaning device according to  claim 1 , wherein the pool cleaner device further includes a reversing assembly, the reversing assembly comprising:
 a reversing blade pivotably coupled to the housing;   wherein the reversing blade pivots toward the housing into a forward or rearward pivoted position in response to a resistance force during driven movement of the pool cleaning device;   wherein the reversing blade pivots upwardly away from the housing into a raised position in response to a buoyant force when the pool cleaning device is stationary;   wherein the reversing blade engages corresponding structure of the water spray assembly when in the forward or rearward pivoting position and block rotation of the water spray assembly relative to the housing;   wherein the reversing blade releases the corresponding structure of the water spray assembly when in the raised position and allows rotation of the water spray assembly to reverse the direction of the water being expelled from the water spray assembly and the driven direction of the pool cleaning device.   
     
     
         9 . The pool cleaning device of  claim 8 , wherein the reversing blade includes a rotating shaft and opposite ends thereof, the reversing blade being rotatably connected to the housing by the rotating shafts. 
     
     
         10 . The pool cleaning device of  claim 9 , wherein the reversing blade further comprises:
 an opening having a first end wall,   a sliding plate comprising a baffle plate extending from a surface of the sliding plate toward the interior of the opening, the sliding plate being mounted on the opening of the reversing blade and adapted to slide relative to the reversing blade toward or away from the rotating shaft of the reversing blade; and   an elastic member disposed inside the opening and located between the baffle plate and the first end wall of the opening, the elastic member being configured to switch between a compressed state and a released state;   wherein one of the reversing blade and the sliding plate comprises a guide groove extending in a sliding direction of the sliding plate; and the other of the reversing blade and the sliding plate comprises a guide rail that matches the guide groove.   
     
     
         11 . The pool cleaning device according to  claim 10 , wherein
 a limiting projection is disposed on the housing, and the limiting projection comprises a first wall and a second wall extending upward in the vertical direction;   the sliding plate abuts against the second wall when the elastic member is in the compressed state, so that the reversing blade is at a first angle to the vertical direction; and   the sliding plate rotates over the second wall and against the first wall when the elastic member is in the released state, so that the reversing blade is at a second angle to the vertical direction; wherein the first angle is greater than the second angle;   wherein the reversing blade is free to pivot to the forward or rearward pivoted position from the second angle;   wherein the reversing blade is blocked from pivoting to the forward or rearward pivoted position from the first angle.   
     
     
         12 . The pool cleaning device according to  claim 6 , wherein the pool cleaning device further comprises:
 a wheel chamber extending in a first direction and disposed on the lower housing of the housing, wherein the wheel chamber comprises a first constraint structure and a second constraint structure on both sides along a second direction perpendicular to the first direction, respectively; and   a front wheel comprising:
 a wheel body disposed between the first and second constraint structures within the wheel chamber; and 
 an axle spanning the wheel chamber in the second direction and comprising a first end and a second end, 
 wherein the first end of the axle is rotatably supported at the first constraint structure, and the second end of the axle oscillates in the first direction within a constraint range of the second constraint structure to steer the front wheel. 
   
     
     
         13 . The pool cleaning device according to  claim 12 , wherein the second constraint structure comprises:
 a limiting plate; and   an adjustment switch disposed on the lower housing of the housing and comprising a stop lever opposite and spaced away from the limiting plate in the first direction;   wherein a spacing between the limiting plate and the stop lever adjustably defines the constraint range of the second constraint structure;   wherein the second end of the axle is configured to oscillate between the limiting plate and the stop lever within the constraint range of the second constraint structure.   
     
     
         14 . The pool cleaning device according to  claim 13 , wherein the adjustment switch includes a shift lever connected to the stop lever, and an angle of greater than 90 degrees and less than or equal to 180 degrees is formed between the stop lever and the shift lever. 
     
     
         15 . The pool cleaning device according to  claim 13 , wherein the pool cleaning device further comprises:
 a wheel chamber cover disposed on the lower housing of the housing and comprising an arc-shaped sliding groove;   wherein the sliding groove comprises a first limiting end and a second limiting end, and an end of the adjustment switch is disposed within the sliding groove and slidably positioned between the first limiting end and the second limiting end;   the axle is arranged between the wheel chamber cover and the lower housing of the housing;   wherein when the end of the adjustment switch is located at the first limiting end of the sliding groove, the stop lever and the limiting plate set a first range of oscillation at the second end of the axle;   wherein when the end of the adjustment switch is located at the second limiting end of the sliding groove, the stop lever and the limiting plate set a second range of oscillation at the second end of the axle; and   wherein the first range of oscillation is greater than the second range of oscillation;   wherein the adjustment switch is actuatable to set different cleaning paths for the pool cleaning device depending on the shape of the pool.   
     
     
         16 . The pool cleaning device according to  claim 12 , wherein
 the first constraint structure comprises a first stop post and a second stop post, the first stop post and the second stop post being spaced apart in the first direction; and   the first end of the axle is disposed between the first stop post and the second stop post and is in rotatable contact with the first stop post and the second stop post.   
     
     
         17 . The pool cleaning device according to  claim 14 , wherein:
 when the first range of oscillation is set:
 forward movement of the pool cleaning device shifts the second end of the axle against the stop lever and the pool cleaning device is directed forward and to the left; and 
 rearward movement of the pool cleaning device shifts the second end of the axle against the limiting plate and the pool cleaning device is directed rearward and to the right. 
   
     
     
         18 . The pool cleaning device according to  claim 16 , wherein:
 when the second range of oscillation is set:
 forward movement of the pool cleaning device shifts the second end of the axle against the stop lever and the pool cleaning device is directed forward and straight relative to a major axis of the pool cleaning device; and 
 rearward movement of the pool cleaning device shifts the second end of the axle against the limiting plate and the pool cleaning device is directed rearward and to the right. 
   
     
     
         19 . A pool cleaning device comprising:
 a housing having a water inlet and a water outlet;   a drive assembly disposed inside the housing and having an output shaft extending at least partially through the water outlet; and   a water spray assembly rotatably coupled to the housing and in fluid communication with the water outlet, wherein the water spray assembly includes a water spray housing and an impeller disposed in the water spray housing, wherein the impeller is connected to the output shaft of the drive assembly, wherein the impeller receives water through the water outlet, and the water spray housing projects the water from the impeller and out of the water spray housing and provides a driving force for the pool cleaning device;   a reversing blade coupled to the housing and pivotable relative to the housing in response to movement of the pool cleaning device.   
     
     
         20 . The pool cleaning device according to  claim 19 , wherein a resistance force provided by water during movement pivots the reversing blade to a forward pivoted position or a rearward pivoted position, such that forward movement of the pool cleaning device pivots the reversing blade to the rearward pivoted position and rearward movement of the pool cleaning device pivots the reversing blade to the forward pivoted position;
 wherein the reversing blade is moveable to an upright positioned between the forward and rearward pivoted position in response to a buoyant force applied to the reversing blade when the pool cleaning device is stationary;   wherein the water spray assembly is blocked from rotation during forward and rearward movement when the reversing blade is in the forward or rearward pivoted position;   wherein the water spray assembly is rotatable when the reversing blade is in the upright position, such that when movement of the pool cleaning device is blocked by a pool wall, the reversing blade will move from the forward or rearward pivoted position to the upright position, and the water spray assembly will rotate to drive the pool cleaning device in an opposite direction;   wherein at least one wheel of the pool cleaning device is configured to oscillate within an adjustable oscillation range to adjustably set a forward and/or rearward cleaning path of the pool cleaning device.