Autonomous cleaning device

Abstract

An autonomous cleaning device is provided. The autonomous cleaning device includes: a device body; and a drive module, a cleaning module and a sensing module, wherein the drive module, the cleaning module and the sensing module are detachably assembled to the device body, respectively.

What is claimed is: 
     
         1 . An autonomous cleaning device, comprising:
 a device body; and   a drive module, a cleaning module and a sensing module, wherein the drive module, the cleaning module and the sensing module are detachably assembled to the device body, respectively.   
     
     
         2 . The autonomous cleaning device according to  claim 1 , wherein the device body comprises:
 a chassis, the drive module being mounted on the chassis; and   an upper housing fixed to the chassis, the sensing module being assembled to a predetermined position in the upper housing.   
     
     
         3 . The autonomous cleaning device according to  claim 2 , wherein the predetermined position in the upper housing comprises an accommodating chamber matching with the sensing module. 
     
     
         4 . The autonomous cleaning device according to  claim 3 , wherein the sensing module is fixed to the upper housing through a plurality of first connecting pieces. 
     
     
         5 . The autonomous cleaning device according to  claim 3 , wherein the device body further comprises:
 a protection cover assembled above the accommodating chamber, a circumferential side of the protection cover being hollowed out, and the sensing module being located between the accommodating chamber and the protection cover.   
     
     
         6 . The autonomous cleaning device according to  claim 5 , wherein the circumferential side of the protection cover comprises at least one column, and the width of the at least one column is reduced to meet a strength requirement and a laser beam emission and reception requirement. 
     
     
         7 . The autonomous cleaning device according to  claim 5 , wherein the protection cover is fixed to the upper housing through a plurality of second connecting pieces. 
     
     
         8 . The autonomous cleaning device according to  claim 1 , wherein a waterproof and dustproof hole is provided in a periphery of the sensing module, and the upper housing is provided with a through hole corresponding to the waterproof and dustproof hole. 
     
     
         9 . The autonomous cleaning device according to  claim 1 , wherein the device body further comprises an upper cover, and the sensing module partially protrudes out of the upper cover. 
     
     
         10 . The autonomous cleaning device according to  claim 1 , wherein the device body further comprises a control unit located below the sensing module, and the sensing module comprises a connector provided at a lower surface of the sensing module and electrically connected with the control unit. 
     
     
         11 . The autonomous cleaning device according to  claim 1 , wherein the device body comprises:
 a forward portion; and   a rearward portion, the sensing module being located at the rearward portion.   
     
     
         12 . The autonomous cleaning device according to  claim 1 , wherein the drive module comprises:
 a drive wheel module comprising a left drive wheel unit and a right drive wheel unit, the left drive wheel unit and the right drive wheel unit being opposed to each other along a transverse axis defined by the device body.   
     
     
         13 . The autonomous cleaning device according to  claim 12 , wherein the drive module further comprises at least one driven wheel configured to assist in supporting and moving the device body. 
     
     
         14 . The autonomous cleaning device according to  claim 1 , wherein the cleaning module comprises:
 a main brush assembly, a dust box assembly and a power unit arranged sequentially along an advancing direction of the autonomous cleaning device;   a primary air channel provided between the main brush assembly and the dust box assembly, wherein the primary air channel cooperates with the power unit such that an object to be cleaned by the main brush assembly is conveyed by the wind generated by the power unit to the dust box assembly; and   a secondary air channel provided between the dust box assembly and the power unit, wherein the windward side of an inner wall of the secondary air channel has an arc shape, and the secondary air channel cooperates with the power unit such that the wind output from the dust box assembly is guided smoothly to an air intake of the power unit in a predetermined direction.   
     
     
         15 . The autonomous cleaning device according to  claim 14 , wherein the primary air channel comprises:
 a sectional area corresponding to any position on the primary air channel, the sectional area being in a negative relationship with a distance between the any position and the main brush assembly.   
     
     
         16 . The autonomous cleaning device according to  claim 15 , wherein the secondary air channel comprises:
 an air outlet connected to the air intake of the power unit, the power unit being an axial-flow fan and the air intake of the power unit being oriented in a same direction as a rotating shaft of the axial-flow fan.   
     
     
         17 . The autonomous cleaning device according to  claim 14 , wherein the main brush assembly comprises:
 a main brush chamber; and   a main brush comprising:
 a rotating shaft; 
 a rubber brush member provided on the rotating shaft, wherein the rubber brush member has a first deviation angle along a circumferential direction of the rotating shaft in a cylindrical surface of the main brush to make a wind-gathering strength of the rubber brush member reach a preset strength; 
 a hair brush member provided on the rotating shaft, wherein the hair brush member has a second deviation angle along the circumferential direction of the rotating shaft in the cylindrical surface of the main brush, such that when hair tufts of the hair brush member are arranged sequentially along the axial direction of the rotating shaft, a circumferential angle of coverage over the main brush in the cylindrical surface of the main brush reaches a preset angle. 
   
     
     
         18 . The autonomous cleaning device according to  claim 17 , wherein the rubber brush member is curved at a middle position thereof along the advancing direction, such that the wind generated by the power unit collects the object to be cleaned in the middle position of the rubber brush member, and the middle position of the rubber brush member reaches the primary air channel later than other positions thereof when the autonomous cleaning device advances. 
     
     
         19 . The autonomous cleaning device according to  claim 14 , wherein the dust box assembly comprises:
 a dust box comprising at least two side openings, one side opening being an air inlet of the dust box and the other side opening being an air outlet of the dust box;   a filter screen mounted at the air outlet of the dust box for covering the air outlet of the dust box.   
     
     
         20 . The autonomous cleaning device according to  claim 19 , wherein the sensing module is disposed adjacent to the dust box.