Automatic cleaner

Abstract

Provided is an automatic cleaner, which includes a first moving part, a second moving part, a moving wheel, a driving motor, a fixing member, and a control part. The first moving part is movably disposed at a side of an object to be cleaned. The second moving part is movably disposed at another side of the object. The moving wheel is disposed on at least one of the first moving part and the second moving part. The driving motor provides driving force to the moving wheel. The fixing member fixes the first moving part and the second moving part to each other through the object. The control part increases or decreases the driving force output from the driving motor according to a moving direction of the first or second moving part.

1 . An automatic cleaner comprising:
 a first moving part movably disposed at a side of an object to be cleaned;   a second moving part movably disposed at another side of the object;   a moving wheel disposed on at least one of the first moving part and the second moving part;   a driving motor providing driving force to the moving wheel;   a fixing member fixing the first moving part and the second moving part to each other through the object; and   a control part configured to increase or decrease the driving force output from the driving motor according to a moving direction of the first or second moving part.   
     
     
         2 . The automatic cleaner according to  claim 1 , comprising:
 an acceleration sensor sensing velocity change of the first or second moving part; and   a height sensor sensing height change of the first or second moving part.   
     
     
         3 . The automatic cleaner according to  claim 1 , wherein the driving force of the driving motor is greater when the first or second moving part moves upward than when the first or second moving part moves downward. 
     
     
         4 . The automatic cleaner according to  claim 3 , wherein the driving force of the driving motor while the first or second moving part moves upward is greater than a sum of an unloaded weight of the first moving part, an unloaded weight of the second moving part, frictional force of the moving wheel, and shear force of the fixing member. 
     
     
         5 . The automatic cleaner according to  claim 3 , wherein the driving force of the driving motor while the first or second moving part moves downward is greater than a value given by subtracting a sum of an unloaded weight of the first moving part an unloaded weight of the second moving part from a sum of frictional force of the moving wheel and shear force of the fixing member 
     
     
         6 . The automatic cleaner according to  claim 3 , wherein the driving force of the driving motor while the first or second moving part moves left or right is smaller than the driving force of the driving motor while the first or second moving part moves upward, and is greater than the driving force of the driving motor while the first or second moving part moves downward. 
     
     
         7 . The automatic cleaner according to  claim 6 , wherein the driving force of the driving motor while the first or second moving part moves left or right is greater than a sum of frictional force of the moving wheel and shear force of the fixing member. 
     
     
         8 . The automatic cleaner according to  claim 1 , wherein the fixing member comprises magnetic members, which are provided to the first moving part and the second moving part, respectively, and attraction force is exerted between the magnetic members. 
     
     
         9 . An automatic cleaner comprising:
 at least one moving part movably disposed on a window;   a moving wheel provided to the moving part;   a driving motor providing driving force to the moving wheel;   a fixing member providing fixing force for attaching the moving part to the window;   a cleaning member provided to the moving part, and cleaning at least one surface of the window; and   a control part configured to control electric current applied to the driving motor such that an output of the driving motor is equal to or greater than a sum of an unloaded weight of the moving part and the fixing force of the fixing member.   
     
     
         10 . The automatic cleaner according to  claim 9 , wherein the moving part comprises:
 a first moving part disposed at a side of the window; and   a second moving part disposed at another side of the window,   wherein the fixing member includes magnetic members provided to the first moving part and the second moving part to provide magnetic force.   
     
     
         11 . The automatic cleaner according to  claim 9 , wherein the fixing member comprises a suction part that generates negative pressure within the moving part to fix the moving part to the window. 
     
     
         12 . The automatic cleaner according to  claim 11 , wherein the suction part comprises:
 a suction motor generating sucking force; and   a suction hole disposed in a surface of the moving part to suck air.   
     
     
         13 . The automatic cleaner according to  claim 12 , wherein the control part controls the sucking force of the suction motor to be smaller when the moving part is moved than when the moving part is fixed to the window. 
     
     
         14 . An automatic cleaner comprising:
 a driving part movably disposed on a surface of a window;   a driven part disposed on another surface of the window, and moved according to a movement of the driving part;   a moving wheel moving the driving part or the driven part;   a driving motor providing driving force to the moving wheel;   a plurality of magnetic members provided to the driving part and the driven part;   a cleaning member cleaning one of the surfaces of the window; and   a control part configured to control the driving force of the driving motor to vary according to whether the driving part or the driven part moves toward an upper, lower, or lateral side of the window.   
     
     
         15 . The automatic cleaner according to  claim 14 , wherein the driving force of the driving motor is maximal while the driving part or the driven part moves upward. 
     
     
         16 . The automatic cleaner according to  claim 14 , wherein the driving motor provides brake force to the driving part or the driven part while the driving part or the driven part moves toward the lower side of the window. 
     
     
         17 . The automatic cleaner according to  claim 14 , further comprising a sensor disposed on at least one surface of the driving part or the driven part to sense an obstacle in a moving path of the driving part or the driven part. 
     
     
         18 . The automatic cleaner according to  claim 14 , wherein the cleaning member comprises:
 an adsorbing member removing an impurity from one of the surfaces of the window; and   a rotary cleaning member rotatably provided to the driving part or the driven part to remove an impurity.   
     
     
         19 . The automatic cleaner according to  claim 18 , wherein the rotary cleaning member is provided in plurality, and
 the adsorbing member is disposed between the rotary cleaning members   
     
     
         20 . The automatic cleaner according to  claim 18 , further comprising:
 a driving shaft connecting the moving wheel to the driving motor; and   a transmission member disposed between the driving shaft and the rotary cleaning member, and transmitting torque from the driving shaft to the rotary cleaning member.   
     
     
         21 . An automatic cleaner comprising:
 a driving part movably disposed on a surface of an object to be cleaned, the object being inclined from a ground;   a driven part disposed on another surface of the object, and moved according to a movement of the driving part;   a moving wheel moving the driving part or the driven part;   a driving motor providing driving force to the moving wheel;   a plurality of magnetic members disposed at both sides of the object; and   a control part configured to control electric current applied to the driving motor such that the driving motor generates a preset amount of driving force according to a moving direction of the driving part or the driven part.   
     
     
         22 . The automatic cleaner according to  claim 21 , wherein an angle between the object and the ground ranges above about 0°, and equal to or below about 90°. 
     
     
         23 . The automatic cleaner according to  claim 21 , wherein, while the driving part or the driven part moves upward, the control part controls the driving force of the driving motor to be equal to or greater than a sum of an unloaded weight of the driving part, an unloaded weight of the driven part, and frictional force between the moving wheel and the object. 
     
     
         24 . The automatic cleaner according to  claim 21 , wherein, while the driving part or the driven part moves downward, the control part controls the driving force of the driving motor to be applied in a direction interfering with the moving of the driving part or the driven part.