Floor brush and vacuum cleaner

Abstract

A floor brush comprising: a housing defining a dust suction cavity and including an end cover at one side thereof; a rolling brush assembly comprising a rolling brush able to pass through an opening of the end cover to be arranged in the dust suction cavity; a biasing assembly, wherein the rolling brush assembly is mounted biasedly relative to the housing by means of the biasing assembly; and an automatic locking apparatus having a release position and a locking position, wherein at the locking position, the automatic locking apparatus fixes the rolling brush assembly in position, and at the release position, the rolling brush assembly can be taken out axially outward from the housing under the effect of a biasing force. This floor brush avoids the need to use a tool to (dis)assemble the rolling brush, achieving the objects of simple structure and convenient (dis)assembly.

1 . A floor brush, wherein the floor brush comprises:
 a housing defining a dust suction cavity, and the housing comprising an end cover at one side thereof;   a rolling brush assembly comprising a rolling brush being able to pass through an opening of the end cover and being arranged in the dust suction cavity;   a biasing assembly, the rolling brush assembly being biasedly mounted relative to the housing by the biasing assembly; and   an automatic locking apparatus having a release position and a locking position relative to the rolling brush assembly, wherein at the locking position, the automatic locking apparatus fixes the rolling brush assembly in position, and at the release position, the rolling brush assembly is moved axially outward from the housing under the effect of a biasing force.   
     
     
         2 . The floor brush as claimed in  claim 1 , wherein the rolling brush assembly further comprises a locking member that is connected to the rolling brush, and the locking member engages with the automatic locking apparatus to fix the rolling brush assembly in position. 
     
     
         3 . The floor brush as claimed in  claim 1 , wherein the biasing assembly comprises a compression spring and a pushing block, and the pushing block abuts the rolling brush assembly. 
     
     
         4 . The floor brush as claimed in  claim 3 , wherein the biasing assembly further comprises a retaining frame, and the compression spring is compressed between the pushing block and the retaining frame. 
     
     
         5 . The floor brush as claimed in  claim 1 , wherein the automatic locking apparatus comprises a trigger and a latch member, and the latch member is biased to a locking position. 
     
     
         6 . The floor brush as claimed in  claim 5 , wherein the latch member enters a release position from the locking position in response to an action of the trigger, wherein in the locking position, the latch member is engaged with the locking member, so as to lock the rolling brush assembly, and in the release position, the latch member is disengaged from the locking member, so as to release the rolling brush assembly. 
     
     
         7 . The floor brush as claimed in  claim 5 , wherein when the rolling brush assembly passes through the opening of the end cover and is mounted, the latch member is squeezed by the rolling brush assembly and leaves the locking position, until the latch member engages with the locking member. 
     
     
         8 . The floor brush as claimed in  claim 5 , wherein the trigger comprises a pressing part and a branch part that extends from the pressing part, and when the trigger is pressed, the branch part causes the latch member to move, so as to cause the locking member to be in the release position. 
     
     
         9 . The floor brush as claimed in  claim 8 , wherein the latch member comprises one of a lock tongue and a locking slot, and the locking member comprises the other of the lock tongue and the locking slot, and when the locking member is in the locking position, the lock tongue is locked in the locking slot. 
     
     
         10 . The floor brush as claimed in  claim 9 , wherein the latch member moves along a slide rail. 
     
     
         11 . The floor brush as claimed in  claim 1 , wherein the trigger comprises two half parts that are pivotally connected to each other at a pivot point, each half part comprising a branch part below the pivot point and comprising a lock tongue at an inner side of each branch part, and the locking member comprising a locking slot for receiving the lock tongue. 
     
     
         12 . The floor brush as claimed in  claim 11 , wherein a compression spring is provided pressed between upper ends of the half parts, above the pivot point. 
     
     
         13 . The floor brush as claimed in  claim 12 , wherein each half part, above the pivot point, comprises a pressing part, and the two pressing parts being pressed toward each other causes the branch parts to move away from each other, so that the lock tongue moves out from the locking slot. 
     
     
         14 . The floor brush as claimed in  claim 12 , wherein when the rolling brush assembly passes through the opening of the end cover and is mounted, the trigger is squeezed by the rolling brush assembly and leaves the locking position, until the lock tongue engages with the locking member. 
     
     
         15 . The floor brush as claimed in  claim 1 , wherein the automatic locking apparatus comprises a trigger and a rotating locking block; the trigger is arranged to be axially movable, and the rotating locking block switches between the release position and the locking position in response to triggering by the trigger, wherein in the locking position, the rotating locking block is locked on the end cover, and in the release position, the rotating locking block is separated from the end cover. 
     
     
         16 . The floor brush as claimed in  claim 15 , wherein the end cover comprises a stop part for engaging the rotating locking block; the rotating locking block rotates circumferentially by a single position relative to the trigger by triggering by the trigger, the position being one of a release position and a locking position, and the release position and the locking position being adjacent to each other; the rotating locking block in the locking position is engaged with the stop part, and the rotating locking block in the release position is separated from the stop part. 
     
     
         17 . The floor brush as claimed in  claim 16 , wherein the automatic locking apparatus further comprises a locking member, a bearing seat that is fastened onto the locking member, and an elastic member that is compressed between the rotating locking block and the bearing seat. 
     
     
         18 . The floor brush as claimed in  claim 17 , wherein the locking member comprises multiple guide slots that extend axially on an inner periphery thereof, and the trigger moves axially along the guide slots. 
     
     
         19 . The floor brush as claimed in  claim 18 , wherein the trigger comprises an upper tooth column, the rotating locking block is provided with a lower tooth column, and meshing of the upper tooth column and the lower tooth column is incomplete meshing. 
     
     
         20 . The floor brush as claimed in  claim 19 , wherein the locking member is provided with a slanted face, and the lower tooth column slides along the slanted face to cause the rotating locking block to rotate and switch between the release position and the locking position. 
     
     
         21 . (canceled)