Surface cleaning head and surface cleaning device

Abstract

The present application provides a surface cleaning apparatus and a surface cleaning head, the surface cleaning head comprising: a housing; a brush chamber disposed in a front portion of the housing and having a lower opening and a side opening; and a brush assembly removably mounted in the brush chamber comprising a connecting wall, a cleaning roller, and a side brush, the cleaning roller being configured to rotate around a transverse axis driven by a drive device, and the side brush mechanically coupled to the cleaning roller for following the roller in rotation around the transverse axis.

1 . A surface cleaning apparatus including a surface cleaning head movable along a surface to be cleaned, a cleaning liquid delivery system having a cleaning liquid tank, and a dirty liquid recovery system having a suction source and a recovery tank, wherein the surface cleaning head comprises:
 a housing;   a suction pathway located within the housing;   a brush chamber provided at a forward portion of the housing in fluid communication with the suction pathway and having a lower opening facing the surface to be cleaned and a laterally outward side opening; and   a brush assembly removably mounted in the brush chamber and comprising a connecting wall, a cleaning roller and a side brush, the connecting wall removably connected to the housing and covering at least a portion of the side opening, the connecting wall having an inside surface and an outside surface, an end of the cleaning roller mounted on the inside surface and the side brush mounted on the outside surface, the cleaning roller driven by a drive device to rotate around a transverse axis, wherein the side brush is mechanically coupled to the cleaning roller to follow the cleaning roller around the transverse axis.   
     
     
         2 . The surface cleaning apparatus of  claim 1 , wherein the brush assembly comprises a mudguard mounted on the outside surface of the connecting wall, the mudguard surrounding at least an upper portion of the side brush, and wherein at least a portion of the mudguard has projecting laterally from the outside surface of the connecting wall. 
     
     
         3 . The surface cleaning apparatus of  claim 2 , wherein at least a portion of the mudguard is made of a flexible material. 
     
     
         4 . The surface cleaning apparatus of  claim 1 , wherein the side brush comprises a brush holder and one or more cleaning elements disposed on the brush holder. 
     
     
         5 . The surface cleaning apparatus of  claim 4 , wherein at least a portion of the one or more cleaning elements are distributed along a circumference around the transverse axis. 
     
     
         6 . The surface cleaning apparatus of  claim 4 , wherein the outside surface of the connecting wall has a recessed portion intersected with the lower opening, and wherein the recessed portion is adapted to receive the side brush. 
     
     
         7 . The surface cleaning apparatus of  claim 6 , wherein a forward portion of the connecting wall has a front opening located directly in front of and in communication with the recessed portion, and wherein a portion of the one or more cleaning elements are exposed outwardly through the front opening. 
     
     
         8 . The surface cleaning apparatus of  claim 4 , wherein a lower portion of the connecting wall has a bottom opening, and wherein a portion of the one or more cleaning elements are inclined in an inward direction and pass through the bottom opening. 
     
     
         9 . The surface cleaning apparatus of  claim 4 , wherein the one or more cleaning elements comprise bristle tufts. 
     
     
         10 . The surface cleaning apparatus of  claim 4 , wherein the cleaning roller and the side brush are removable from the connecting wall. 
     
     
         11 . The surface cleaning apparatus of  claim 10 , wherein the side brush is configured to be individually removable from the connecting wall when the brush assembly is mounted in the brush chamber. 
     
     
         12 . (canceled) 
     
     
         13 . (canceled) 
     
     
         14 . (canceled) 
     
     
         15 . The surface cleaning apparatus of  claim 4 , wherein at least a portion of the one or more cleaning elements protrude laterally from the outside surface of the connecting wall. 
     
     
         16 . The surface cleaning apparatus of  claim 1 , wherein the surface cleaning head comprises an upper cover removably disposed on the top of the housing, and wherein the brush assembly is configured to be removed from the brush chamber only after the upper cover is removed from the housing. 
     
     
         17 . (canceled) 
     
     
         18 . (canceled) 
     
     
         19 . (canceled) 
     
     
         20 . (canceled) 
     
     
         21 . The surface cleaning apparatus of  claim 1 , wherein the cleaning liquid delivery system comprises a first liquid spray nozzle for the cleaning roller and a second liquid spray nozzle for the side brush, and wherein the first liquid spray nozzle and second liquid spray nozzle are fluidly connected to the cleaning liquid tank. 
     
     
         22 . (canceled) 
     
     
         23 . (canceled) 
     
     
         24 . A surface cleaning head, adapted to move back and forth across a surface to be cleaned, comprising:
 a pair of lateral sides set opposite each other on the left and right;   a driving device; and   at least one side brush arranged on at least one of the lateral sides and configured to be capable of being driven by the driving device to rotate around a transverse axis through the lateral sides, and wherein at least a portion of each of the at least one side brush is exposed outwardly from a corresponding portion of the lateral sides.   
     
     
         25 . The surface cleaning head of  claim 24 , further comprising a cleaning roller driven by the drive device to rotate around the transverse axis and disposed between the lateral sides, and wherein each of the at least one side brush is disposed to the left or to the right of the cleaning roller. 
     
     
         26 . The surface cleaning head of  claim 24 , wherein one of the lateral sides comprises a first sidewall and a connecting wall removably coupled to a front side of the first sidewall, the connecting wall having an inside surface and an outside surface, and wherein one of at least one side brush is mounted on the outside surface and an end of the cleaning roller is supported on the inside surface. 
     
     
         27 . The surface cleaning head of  claim 26 , wherein the connecting wall, the cleaning roller, and the at least one side brush mounted on the connecting wall form together at least a portion of a brush assembly removable from the surface cleaning head. 
     
     
         28 . The surface cleaning head of  claim 27 , and further comprising a housing defining the first sidewall and a second sidewall, a brush chamber disposed in a front portion of the housing, the brush chamber having a lower opening facing the surface to be cleaned and a laterally outward side opening, and wherein the brush assembly is removably mounted in the brush chamber and the connecting wall is removably attached to the housing and covers at least a portion of the side opening. 
     
     
         29 . (canceled) 
     
     
         30 . (canceled) 
     
     
         31 . The surface cleaning head of  claim 27 , wherein the brush assembly comprises a connector provided on the connecting wall, the connector having a bearing fixedly provided on the connecting wall and a shaft rotatably supported on the bearing, and wherein one end of the shaft is connected to an end of the cleaning roller and the other end of the shaft is connected to the side brush. 
     
     
         32 . (canceled) 
     
     
         33 . (canceled) 
     
     
         34 . (canceled) 
     
     
         35 . (canceled)