Sanding tool

Abstract

A sanding tool includes a baseplate assembly, a housing assembly, a drive mechanism, and a fan assembly. The baseplate assembly includes a baseplate. The housing assembly includes a body housing. The housing assembly further includes a functional housing, where a hollow cavity is formed in the functional housing, the functional housing is provided with an inlet and an outlet that communicate with the hollow cavity, the inlet communicates with a dust removal channel of the sanding tool, the outlet is configured to discharge gas in the cavity, and the fan assembly is used for forming a dust removal air path moving towards the inlet. A ratio of an area of a projection of the functional housing on the baseplate to an area of the baseplate is greater than or equal to 0.15 and less than or equal to 0.95.

What is claimed is: 
     
         1 . A sanding tool, comprising:
 a baseplate assembly comprising a baseplate for mounting a sanding member;   a housing assembly comprising a body housing;   a drive mechanism disposed in the body housing, wherein the drive mechanism drives the baseplate assembly to move;   a fan assembly mounted to the drive mechanism; and   a support bracket disposed between the body housing and the baseplate;   wherein the housing assembly further comprises a functional housing, a hollow cavity is formed in the functional housing, the functional housing is provided with an inlet and an outlet that communicate with the hollow cavity, the inlet communicates with a dust removal channel of the sanding tool, the outlet is configured to discharge gas in the hollow cavity, the fan assembly is used for forming a dust removal air path moving towards the inlet, a projection of the functional housing on a plane where the baseplate is located is located within the baseplate, and a ratio of an area of a projection of the functional housing on the baseplate to an area of the baseplate is greater than or equal to 0.15 and less than or equal to 0.95.   
     
     
         2 . The sanding tool of  claim 1 , wherein the ratio of the area of the projection of the functional housing on the baseplate to the area of the baseplate is greater than or equal to 0.5 and less than or equal to 0.95. 
     
     
         3 . The sanding tool of  claim 1 , wherein a ratio of an axial height of the functional housing to an axial height of the sanding tool is greater than or equal to 0.3 and less than or equal to 0.85. 
     
     
         4 . The sanding tool of  claim 2 , wherein the functional housing comprises an auxiliary grip at a top end of the functional housing and the auxiliary grip is an inwardly indented recess on the functional housing. 
     
     
         5 . The sanding tool of  claim 1 , wherein the functional housing is snap-fit with the body housing, and the functional housing is further provided with an auxiliary fastener that mates with the baseplate. 
     
     
         6 . The sanding tool of  claim 1 , wherein the functional housing comprises an outer housing disposed on a periphery of the body housing and mating with the body housing to form the hollow cavity. 
     
     
         7 . The sanding tool of  claim 1 , wherein the functional housing comprises an outer housing and an inner housing, the outer housing encloses the inner housing, the hollow cavity is formed between the outer housing and the inner housing, and the inner housing is disposed outside the body housing. 
     
     
         8 . The sanding tool of  claim 7 , wherein an opening is formed between the outer housing and the inner housing, and the functional housing further comprises an end cover covering the opening. 
     
     
         9 . The sanding tool of  claim 1 , wherein a filter and a filter holder for mounting the filter are disposed in the functional housing and the filter is disposed on a moving path of the dust removal air path. 
     
     
         10 . The sanding tool of  claim 1 , further comprising a dust removal assembly disposed at least partially between the baseplate assembly and the functional housing, wherein the dust removal channel is provided with the dust removal assembly. 
     
     
         11 . The sanding tool of  claim 10 , wherein the dust removal assembly comprises a guide portion and a conveying support, the guide portion is provided with a dust inlet, the guide portion is disposed on the baseplate assembly and communicates with a baseplate dust suction opening on the baseplate assembly, the conveying support communicates with the dust inlet of the guide portion, the conveying support is provided with a dust outlet, and the dust outlet interfaces with the inlet. 
     
     
         12 . The sanding tool of  claim 11 , wherein the conveying support is at least partially disposed in the body housing, the conveying support is detachably connected to the body housing, and the conveying support is detachable from the body housing. 
     
     
         13 . The sanding tool of  claim 1 , further comprising a direct current power supply, wherein the drive mechanism is disposed between the direct current power supply and the functional housing. 
     
     
         14 . The sanding tool of  claim 1 , wherein the drive mechanism comprises an electric motor, the sanding tool further comprises a control mechanism for controlling the electric motor and a direct current power supply for powering the electric motor, and the control mechanism is arranged vertically between the electric motor and the direct current power supply. 
     
     
         15 . The sanding tool of  claim 1 , wherein an axial height of the functional housing is greater than or equal to 25 mm and less than or equal to 70 mm. 
     
     
         16 . A sanding tool, comprising:
 a baseplate assembly comprising a baseplate for mounting a sanding member;   a housing assembly comprising a body housing;   a drive mechanism disposed in the body housing, wherein the drive mechanism drives the baseplate assembly to move;   a fan assembly mounted to the drive mechanism; and   a support bracket disposed between the body housing and the baseplate;   wherein the housing assembly further comprises a functional housing, a hollow cavity is formed in the functional housing, the functional housing is provided with an inlet and an outlet that communicate with the hollow cavity, the inlet communicates with a dust removal channel of the sanding tool, the outlet is configured to discharge gas in the hollow cavity, the fan assembly is used for forming a dust removal air path moving towards the inlet, and a ratio of an axial height of the functional housing to an axial height of the sanding tool is greater than or equal to 0.3 and less than or equal to 0.85.   
     
     
         17 . The sanding tool of  claim 16 , wherein the functional housing comprises an auxiliary grip at a top end of the functional housing and the auxiliary grip is an inwardly indented recess on the functional housing. 
     
     
         18 . The sanding tool of  claim 16 , wherein the functional housing is snap-fit with the body housing, and the functional housing is further provided with an auxiliary fastener that mates with the baseplate. 
     
     
         19 . The sanding tool of  claim 16 , wherein the functional housing comprises an outer housing and an inner housing, the outer housing encloses the inner housing, the hollow cavity is formed between the outer housing and the inner housing, the inner housing is disposed outside the body housing, an opening is formed between the outer housing and the inner housing, and the functional housing further comprises an end cover covering the opening. 
     
     
         20 . The sanding tool of  claim 16 , wherein the drive mechanism comprises an electric motor, the sanding tool further comprises a control mechanism for controlling the electric motor and a direct current power supply for powering the electric motor, and the control mechanism is arranged vertically between the electric motor and the direct current power supply.