Scrubber

Abstract

Provided is a floor washing machine. The floor washing machine includes a main body, a handle and a scrubber brush assembly. The scrubber brush assembly includes a housing having a front end and a rear end; a first roller brush disposed at the front end of the housing; a second roller brush disposed at the rear end of the housing; a motor and two transmission mechanisms. The two transmission mechanisms respectively drive the two roller brushes to operate. The first roller brush has a first rotational speed. The second roller brush has a second rotational speed. The first rotational speed is greater than the second rotational speed.

What is claimed is: 
     
         1 . A scrubber, comprising:
 a main body;   a handle located at one end of the main body and configured to be gripped; and   a scrubber brush assembly located at another end of the main body and comprising:
 a housing having a front end and a rear end opposite to the front end; 
 a first roller brush disposed at the front end of the housing; and 
 a second roller brush disposed at the rear end of the housing, 
 wherein the first roller brush has a first rotational speed in operation, and wherein the second roller brush has a second rotational speed in operation, the first rotational speed being greater than the second rotational speed. 
   
     
     
         2 . The scrubber according to  claim 1 , wherein:
 the scrubber brush assembly comprises a motor located within the housing;   the motor is in driving connection with the first roller brush by a first transmission mechanism, the first transmission mechanism being configured to drive the first roller brush to operate; and   the motor is in driving connection with the second roller brush by a second transmission mechanism, the second transmission mechanism being configured to drive the second roller brush to operate; and   a reduction ratio of the first transmission mechanism is smaller than a reduction ratio of the second transmission mechanism.   
     
     
         3 . The scrubber according to  claim 2 , wherein the scrubber brush assembly further comprises:
 the first transmission mechanism in driving connection with the first roller brush;   the second transmission mechanism in driving connection with the second roller brush; and   an output transmission gear set, comprising:
 a planetary gear mechanism comprising a sun gear connected to an operating terminal of the motor; 
 a first output gear disposed on a planet carrier of the planetary gear mechanism and connected to the first transmission mechanism in a transmission manner; and 
 a second output gear engaged with the first output gear and connected to the second transmission mechanism in a transmission manner. 
   
     
     
         4 . The scrubber according to  claim 3 , wherein the first transmission mechanism comprises:
 a first input synchronous pulley connected to the first output gear;   a first synchronous belt; and   a first output synchronous pulley connected to the first input synchronous pulley by the first synchronous belt in a transmission manner and connected to the first roller brush in a transmission manner.   
     
     
         5 . The scrubber according to  claim 3 , wherein the second transmission mechanism comprises:
 a second input synchronous pulley connected to the second output gear;   a second synchronous belt; and   a second output synchronous pulley connected to the second input synchronous pulley by the second synchronous belt in a transmission manner and connected to the second roller brush in a transmission manner.   
     
     
         6 . The scrubber according to  claim 2 , wherein:
 the first roller brush has a first hollow cavity, or the second roller brush has a second hollow cavity; and   the motor is received in the first hollow cavity or the second hollow cavity.   
     
     
         7 . The scrubber according to  claim 2 , wherein the motor comprises:
 a first motor in driving connection with the first roller brush by the first transmission mechanism, the first transmission mechanism being configured to drive the first roller brush to operate; and   a second motor in driving connection with the second roller brush by the second transmission mechanism, the second transmission mechanism being configured to drive the second roller brush to operate.   
     
     
         8 . The scrubber according to  claim 7 , wherein:
 the first roller brush has a first hollow cavity for receiving the first motor and the first transmission mechanism, the first motor being in driving connection with the first roller brush by the first transmission mechanism; and   the second roller brush has a second hollow cavity configured for receiving the second motor and the second transmission mechanism, the second motor being in driving connection with the second roller brush by the second transmission mechanism.   
     
     
         9 . The scrubber according to  claim 8 , wherein the first transmission mechanism comprises:
 a first-stage reduction assembly, wherein a power output terminal of the first motor is in driving connection with the first-stage reduction assembly; and   a second-stage reduction assembly having a power output terminal in driving connection with the first roller brush, wherein a power output terminal of the first-stage reduction assembly is in driving connection with the second-stage reduction assembly.   
     
     
         10 . The scrubber according to  claim 8 , wherein the second transmission mechanism comprises:
 a first-stage reduction assembly, wherein a power output terminal of the second motor is in driving connection with the first-stage reduction assembly; and   a second-stage reduction assembly having a power output terminal in driving connection with the second roller brush, wherein a power output terminal of the first-stage reduction assembly is in driving connection with the second-stage reduction assembly.   
     
     
         11 . The scrubber according to  claim 1 , wherein:
 in an operating state of the scrubber brush assembly, a rotation direction of the first roller brush is opposite to a rotation direction of the second roller brush.   
     
     
         12 . The scrubber according to  claim 1 , wherein:
 the main body extends obliquely upwards and towards the rear end of the housing; and   a projection of a center of gravity of the main body on a horizontal plane is located at a rear part of a projection of a center of gravity of the second roller brush on the horizontal plane.   
     
     
         13 . The scrubber according to  claim 1 , wherein:
 the main body extends obliquely backwards relative to the scrubber brush assembly; and   a projection of a center of gravity of the scrubber as a whole on a horizontal plane is located behind the scrubber brush assembly.   
     
     
         14 . The scrubber according to  claim 13 , wherein:
 the first roller brush in operation has a first traction force;   the second roller brush in operation has a second traction force; and   a product of the first traction force and the first rotational speed is substantially equal to or greater than a product of the second traction force and the second rotational speed.   
     
     
         15 . A scrubber, comprising a scrubber brush assembly, the scrubber brush assembly comprising:
 a first roller brush;   a second roller brush opposite to the first roller brush;   a motor; and   a gearbox, comprising:
 a first transmission mechanism configured to drive the first roller brush to operate at a first speed; 
 a second transmission mechanism configured to drive the second roller brush to operate at a second speed different from the first speed; and 
 an output transmission gear set having a power input terminal connected to an operating terminal of the motor and a power output terminal connected to each of the first transmission mechanism and the second transmission mechanism in a transmission manner. 
   
     
     
         16 . The scrubber according to  claim 15 , wherein the output transmission gear set comprises:
 a planetary gear mechanism comprising a sun gear connected to the operating terminal of the motor, wherein gear teeth are disposed on an outer edge of a planet carrier of the planetary gear mechanism, and wherein the planet carrier is connected to the first transmission mechanism in a transmission manner; and   a second output gear engaged with the gear teeth and connected to the second transmission mechanism in a transmission manner.   
     
     
         17 . The scrubber according to  claim 16 , wherein the first transmission mechanism comprises:
 a first input synchronous pulley connected to the planet carrier;   a first synchronous belt; and   a first output synchronous pulley connected to the first input synchronous pulley by the first synchronous belt in a transmission manner, and connected to the first roller brush in a transmission manner.   
     
     
         18 . The scrubber according to  claim 16 , wherein the second transmission mechanism comprises:
 a second input synchronous pulley connected to the second output gear;   a second synchronous belt; and   a second output synchronous pulley connected to the second input synchronous pulley by the second synchronous belt in a transmission manner and connected to the second roller brush in a transmission manner.   
     
     
         19 . The scrubber according to  claim 16 , wherein the gearbox comprises a planetary gearbox and a synchronous belt gearbox, the output transmission gear set being disposed in the planetary gearbox, and the first transmission mechanism and the second transmission mechanism being disposed in the synchronous belt gearbox. 
     
     
         20 . The scrubber according to  claim 16 , wherein:
 the motor is located within a space between the first roller brush and the second roller brush; and   the gearbox is located at a side end of the scrubber brush assembly.