Brush head and surface cleaning device

Abstract

The present disclosure provides a bush head and a surface cleaning device. The brush head includes a brush head housing having an accommodating space; a roller brush arranged in the accommodating space; a waterway plate assembly arranged between the brush head housing and the roller brush and configured to distribute a cleaning liquid to the roller brush; and a scraper fixedly connected with the waterway plate assembly and configured to abut against the roller brush, where the waterway plate assembly is pivotally connected with the brush head housing and configured to have a rotational tendency relative to the brush head housing, such that the scraper abuts against the roller brush.

What is claimed is: 
     
         1 . A brush head for a surface cleaning device, the brush head comprising:
 a brush head housing having an accommodating space;   a roller brush arranged in the accommodating space;   a waterway plate assembly arranged between the brush head housing and the roller brush and configured to distribute a cleaning liquid to the roller brush; and   a scraper fixedly connected with the waterway plate assembly and configured to abut against the roller brush, wherein   the waterway plate assembly is pivotally connected with the brush head housing and configured to have a rotational tendency relative to the brush head housing, such that the scraper abuts against the roller brush.   
     
     
         2 . The brush head according to  claim 1 , further comprising:
 an elastic component cooperating with the brush head housing and the waterway plate assembly, such that the waterway plate assembly has the rotational tendency relative to the brush head housing.   
     
     
         3 . The brush head according to  claim 2 , wherein the elastic component comprises a torsion spring, and the torsion spring is in an energy storage state, such that the waterway plate assembly has the rotational tendency relative to the brush head housing. 
     
     
         4 . The brush head according to  claim 1 , wherein the scraper is fixedly connected with the waterway plate assembly through a fixing component. 
     
     
         5 . The brush head according to  claim 1 , wherein a direction in which the waterway plate assembly has the rotational tendency relative to the brush head housing is opposite to a rotating direction of the roller brush. 
     
     
         6 . The brush head according to  claim 1 , wherein a contact angle between the scraper and the roller brush is 0-90 degrees. 
     
     
         7 . The brush head according to  claim 1 , wherein the accommodating space comprises a first accommodating space and a second accommodating space,
 the roller brush comprises a first roller brush and a second roller brush, and the first roller brush and the second roller brush are arranged in the first accommodating space and the second accommodating space respectively,   the waterway plate assembly comprises a first waterway plate assembly and a second waterway plate assembly, the first waterway plate assembly and the second waterway plate assembly correspond to the first roller brush and the second roller brush respectively and are configured to provide a cleaning liquid to the first roller brush and the second roller brush respectively, and   the scraper comprises a first scraper and a second scraper, the first scraper and the second scraper are fixedly connected with the first waterway plate assembly and the second waterway plate assembly respectively and are configured to abut against the first roller brush and the second roller brush respectively.   
     
     
         8 . The brush head according to  claim 7 , wherein a free end of the first scraper is arranged toward the second roller brush, and a free end of the second scraper is arranged toward the first roller brush. 
     
     
         9 . The brush head according to  claim 7 , wherein the first roller brush and the second roller brush are configured to rotate in opposite directions. 
     
     
         10 . The brush head according to  claim 1 , wherein the brush head housing is defined with an opening, at least a portion of the waterway plate assembly protrudes from the opening, and a pivoting structure of the brush head housing and the waterway plate assembly is arranged at the opening. 
     
     
         11 . The brush head according to  claim 3 , wherein the brush head housing comprises a rotating shaft and a first torsion spring limiting structure, the waterway plate assembly comprises a second torsion spring limiting structure;
 wherein the torsion spring is fitted over the rotating shaft, and a first end of the torsion spring abuts against the first torsion spring limiting structure and a second end of the torsion spring abuts against the second torsion spring limiting structure.   
     
     
         12 . The brush head according to  claim 7 , wherein there are two first pivoting structures between the first waterway plate assembly and the brush head housing, and the two first pivoting structures are arranged at intervals along an extending direction of the first waterway plate assembly. 
     
     
         13 . The brush head according to  claim 7 , wherein there are two second pivoting structures between the second waterway plate assembly and the brush head housing, and the two second pivoting structures are arranged at intervals along an extending direction of the second waterway plate assembly. 
     
     
         14 . The brush head according to  claim 1 , wherein the scraper and the waterway plate assembly are integrally molded. 
     
     
         15 . A surface cleaning device, comprising a brush head, wherein the brush head comprises:
 a brush head housing having an accommodating space;   a roller brush arranged in the accommodating space;   a waterway plate assembly arranged between the brush head housing and the roller brush and configured to distribute a cleaning liquid to the roller brush; and   a scraper fixedly connected with the waterway plate assembly and configured to abut against the roller brush, wherein   the waterway plate assembly is pivotally connected with the brush head housing and configured to have a rotational tendency relative to the brush head housing, such that the scraper abuts against the roller brush.   
     
     
         16 . The surface cleaning device according to  claim 15 , wherein the brush head comprises:
 an elastic component cooperating with the brush head housing and the waterway plate assembly, such that the waterway plate assembly has the rotational tendency relative to the brush head housing.   
     
     
         17 . The surface cleaning device according to  claim 16 , wherein the elastic component comprises a torsion spring, and the torsion spring is in an energy storage state, such that the waterway plate assembly has the rotational tendency relative to the brush head housing. 
     
     
         18 . The surface cleaning device according to  claim 15 , wherein the scraper is fixedly connected with the waterway plate assembly through a fixing component. 
     
     
         19 . The surface cleaning device according to  claim 15 , wherein a direction in which the waterway plate assembly has the rotational tendency relative to the brush head housing is opposite to a rotating direction of the roller brush. 
     
     
         20 . The surface cleaning device according to  claim 15 , wherein a contact angle between the scraper and the roller brush is 0-90 degrees.