Cleaning apparatus and driving device

Abstract

A cleaning apparatus, and a driving device are provided. The cleaning apparatus includes a body, a rolling brush and the driving device. The rolling brush is configured to rotate about the axis thereof and has an inner cavity. The driving device is connected to the body and has a heat dissipation air duct. The driving device extends into the inner cavity of the rolling brush and cooperate with a transmission seat in the inner cavity. The driving device has an air inlet and a sealing member for sealing the air inlet. The sealing member is configured to open the air inlet under extrusion of the transmission seat when the driving device is assembled with the rolling brush to connect the heat dissipation duct with the inner cavity, and seal the air inlet under an elastic restoring force when the driving device is disassembled with the rolling brush.

1 . A cleaning apparatus, comprising:
 a body;   a rolling brush, configured to rotate about an axis of the rolling brush, wherein the rolling brush has an inner cavity; and   a driving device, connected to the body and having a heat dissipation duct the driving device is configured to extend into the inner cavity of the rolling brush and to cooperate with a transmission seat in the inner cavity; the driving device is provided with an air inlet and a sealing member for sealing the air inlet, and   the sealing member is configured to open the air inlet under extrusion of the transmission seat in a case that the driving device is assembled with the rolling brush to connect the heat dissipation duct with the inner cavity; and to seal the air inlet under an elastic restoring force in a case that the driving device is disassembled with the rolling brush.   
     
     
         2 . The cleaning apparatus according to  claim 1 , wherein the driving device comprises a reduction gearbox, an output end of the reduction gearbox is provided with a coupling, the coupling is configured to move along an axial direction of the reduction gearbox between a first position and a second position; the sealing member is fixed to the coupling and is configured to seal the air inlet in a case that the coupling is in the first position and to open the air inlet in a case that the coupling is in the second position. 
     
     
         3 . The cleaning apparatus according to  claim 2 , wherein the reduction gearbox comprises a box and an output shaft penetrating out of the box, the coupling is connected to the output shaft and is configured to move between the first position and the second position; an installing cavity is provided at an output end of the box, the air inlet is provided on an inner wall of the installing cavity; the sealing member is configured to seal an open end of the installing cavity in a case that the coupling is in the first position. 
     
     
         4 . The cleaning apparatus according to  claim 3 , wherein the installing cavity comprises a side wall extending in an axial direction, the sealing member is configured to seal with the side wall. 
     
     
         5 . The cleaning apparatus according to  claim 3 , wherein the box comprises a side wall extending in an axial direction, and a flange extending radially inwardly from an end of the side wall; the sealing member abuts against an end surface of the flange in a case that the coupling is in the first position. 
     
     
         6 . The cleaning apparatus according to  claim 5 , wherein a gap is provided between the sealing member and the side wall. 
     
     
         7 . The cleaning apparatus according to  claim 3 , wherein an elastic device is provided between the output shaft of the reduction gearbox and the coupling, and the elastic device is configured to pre-press the coupling in the first position. 
     
     
         8 . The cleaning apparatus according to  claim 2 , wherein the coupling is configured to have an outer contour adapted with the transmission seat and is configured to move from the first position to the second position under the extrusion of the transmission seat. 
     
     
         9 . The cleaning apparatus according to  claim 1 , wherein the driving device comprises a reduction gearbox, a coupling is provided at an output end of the reduction gearbox, the sealing member is fixed to the coupling, and the sealing member is configured to be deformed under the extrusion of the rolling brush in a case that the driving device is assembled with the rolling brush, to open the air inlet. 
     
     
         10 . The cleaning apparatus according to  claim 9 , wherein the transmission seat is provided with a press-fit part, the press-fit part is configured to press the sealing member to be deformed in a case that the driving device is assembled with the rolling brush. 
     
     
         11 . The cleaning apparatus according to  claim 2 , wherein the driving device comprises a drive motor, the reduction gearbox is fixed to an end of the drive motor; airflow in the inner cavity of the rolling brush passes through the air inlet and flows into the inside of the drive motor. 
     
     
         12 . The cleaning apparatus according to  claim 11 , wherein the driving device comprises a housing, the housing is sleeved on the drive motor and the reduction gearbox; the airflow in the inner cavity of the rolling brush passes through the air inlet and flows into a gap between the housing and the reduction gearbox. 
     
     
         13 . The cleaning apparatus according to  claim 12 , wherein the reduction gearbox comprises a box, and an installing cavity provided at an open end of the box; the air inlet penetrates through an inner wall of the installing cavity; an axially extending deflector cavity is further provided on an outer wall of the box; the airflow from the air inlet passes through the deflector cavity and flows into the inside of the drive motor. 
     
     
         14 . The cleaning apparatus according to  claim 13 , wherein a sealing ring is provided between the housing and the drive motor, and the airflow flowing through the gap between the housing and the reduction gearbox enters the inside of the drive motor through a through-hole provided in the drive motor. 
     
     
         15 . A driving device, wherein the driving device is configured to extend into an inner cavity of a rolling brush in a cleaning apparatus and to cooperate with a transmission seat in the inner cavity; and
 the driving device has a heat dissipation duct, the driving device is provided with an air inlet and a sealing member for sealing the air inlet; the sealing member is configured to open the air inlet under extrusion of the transmission seat in a case that the driving device is assembled with the rolling brush, to connect the heat dissipation duct with the inner cavity; and seal the air inlet under an elastic restoring force in a case that the driving device is disassembled with the rolling brush.   
     
     
         16 - 43 . (canceled) 
     
     
         44 . The cleaning apparatus according to  claim 9 , wherein the driving device comprises a drive motor, the reduction gearbox is fixed to an end of the drive motor; airflow in the inner cavity of the rolling brush passes through the air inlet and flows into the inside of the drive motor. 
     
     
         45 . The cleaning apparatus according to  claim 44 , wherein the driving device comprises a housing, the housing is sleeved on the drive motor and the reduction gearbox; the airflow in the inner cavity of the rolling brush passes through the air inlet and flows into a gap between the housing and the reduction gearbox. 
     
     
         46 . The cleaning apparatus according to  claim 45 , wherein the reduction gearbox comprises a box, and an installing cavity provided at an open end of the box; the air inlet penetrates through an inner wall of the installing cavity; an axially extending deflector cavity is further provided on an outer wall of the box; the airflow from the air inlet passes through the deflector cavity and flows into the inside of the drive motor. 
     
     
         47 . The cleaning apparatus according to  claim 46 , wherein a sealing ring is provided between the housing and the drive motor, and the airflow flowing through the gap between the housing and the reduction gearbox enters the inside of the drive motor through a through-hole provided in the drive motor.