Cleaning robot

Abstract

A cleaning robot includes a housing assembly, a roller brush, a driving module, a dust box, a suction device, a power supply battery and two travelling modules. The housing assembly has a front end and a rear end, and a bottom of the housing assembly is recessed to form a mounting cavity. The roller brush is rotatably arranged in the mounting cavity and can be driven to rotate by the driving module. The two travelling modules are arranged at the rear end of the housing assembly and are spaced from the roller brush in a front-rear direction of the housing assembly.

What is claimed is: 
     
         1 . A cleaning robot, comprising:
 a housing assembly, having a front end and a rear end, wherein a bottom of the housing assembly is recessed to form a mounting cavity;   a driving module;   a roller brush, rotatably arranged in the mounting cavity, and capable of being driven to rotate by the driving module; and   two travelling modules, arranged at the rear end of the housing assembly and spaced from the roller brush in a front-rear direction of the housing assembly.   
     
     
         2 . The cleaning robot of  claim 1 , further comprising:
 a dust box, arranged in the housing assembly and communicated with the mounting cavity, and at least part of which is located behind the mounting cavity;   a suction device, arranged on the housing assembly and located behind the dust box, and communicated with the dust box; and   a power supply battery, arranged on the housing assembly and located behind the dust box;   wherein the two travelling modules are respectively located at both sides of the dust box.   
     
     
         3 . The cleaning robot of  claim 1 , wherein the front end of the housing assembly is arranged in a flat plate shape, wherein the mounting cavity is arranged at a bottom of the front end of the housing assembly, and the mounting cavity is extended along a front edge of the housing assembly. 
     
     
         4 . The cleaning robot of  claim 3 , wherein a distance between a front edge of the roller brush and the front edge of the housing assembly is 0-20 mm. 
     
     
         5 . The cleaning robot of  claim 3 , wherein the front end of the housing assembly is equipped with a front anti-collision structure, and a distance between the front edge of the roller brush and a front edge of the front anti-collision structure is 0-35 mm. 
     
     
         6 . The cleaning robot of  claim 3 , wherein a ratio of a length of the roller brush in an axial direction to a length of the housing assembly in the axial direction of the roller brush is 7/10˜1. 
     
     
         7 . The cleaning robot of  claim 1 , wherein the driving module comprises a motor and a reduction gearbox, wherein the motor is arranged in the housing assembly and is located at a rear side of the roller brush, and the reduction gearbox is assembled to the housing assembly in the front-rear direction, wherein an input end of the reduction gearbox is connected to an output shaft of the motor, and an output end of the reduction gearbox is connected to the roller brush. 
     
     
         8 . The cleaning robot of  claim 1 , further comprising a side sweeping brush, wherein the side sweeping brush is arranged on a bottom of the housing assembly and is located behind one end of the roller brush in an axial direction, and a diameter of a cleaning area of the side sweeping brush is greater than a distance between an end of the roller brush adjacent to the side sweeping brush and a side of the housing assembly adjacent to the side sweeping brush. 
     
     
         9 . The cleaning robot of  claim 1 , further comprising a side sweeping brush, wherein the side sweeping brush may be arranged on the left or right side of the roller brush in an axial direction. 
     
     
         10 . The cleaning robot of  claim 1 , further comprising a side sweeping brush, wherein the side sweeping brush is arranged in front of the roller brush. 
     
     
         11 . The cleaning robot of  claim 10 , wherein the side sweeping brush is arranged on a side of the front of the roller brush. 
     
     
         12 . The cleaning robot of  claim 1 , further comprising two cliff sensors, wherein at least one of the two cliff sensors is arranged on a bottom of the housing assembly and is located at one end of the roller brush in an axial direction of the roller brush. 
     
     
         13 . The cleaning robot of  claim 1 , further comprising two cliff sensors, wherein at least one of the two cliff sensors is arranged on a bottom of the housing assembly and is located closely at the front side of the roller brush. 
     
     
         14 . The cleaning robot of  claim 1 , wherein an area of the front end of the housing assembly adjacent to the ground is protruded forward to form a protruding portion, and at least part of the mounting cavity is formed in the protruding portion. 
     
     
         15 . The cleaning robot of  claim 1 , wherein the housing assembly comprises a main part and an extension part located in a front of the main part, wherein a thickness of the extension part is smaller than that of the main part, and a position of atop surface of the extension part is lower than that of a top surface of the main part. 
     
     
         16 . The cleaning robot of  claim 15 , wherein a front edge of the housing assembly is arranged in a straight line style, and the mounting cavity is arranged at a bottom of a front end of the extension part and is arranged along the front edge of the extension part. 
     
     
         17 . The cleaning robot of  claim 1 , wherein an auxiliary wheel is further provided at a bottom of the front end of the housing assembly, and the auxiliary wheel is located behind the mounting cavity. 
     
     
         18 . The cleaning robot of  claim 1 , wherein a distance between the two travelling modules and the roller brush is set according to a gravity center of the cleaning robot. 
     
     
         19 . The cleaning robot of  claim 1 , wherein the mounting cavity is arranged in the middle of the housing assembly. 
     
     
         20 . The cleaning robot of  claim 1 , wherein the housing assembly comprises:
 a chassis, a front end of which is provided with an assembly port;   an upper cover, covered on the chassis; and   a middle sweeping bracket, arranged in the assembly port and fixedly connected to the chassis,   wherein the mounting cavity is formed on the middle sweeping bracket, and the roller brush is rotatably connected to the middle sweeping bracket.