Replaceable reciprocating work head and an electric tool assembly comprising a reciprocating work head

Abstract

A reciprocating work head for use with an electric tool assembly, such as an electric brush, comprises a movable section and a fixed section. The movable section carries a retaining pin. The movable section is arranged to move along the retaining pin in a reciprocating motion along the longitudinal axis of the fixed section. There is also disclosed an electric tool assembly, such as an electric brush, comprising such a work head.

1 . A reciprocating work head for use with an electric tool assembly comprising: 
 a movable section; and    a fixed section having a longitudinal axis, the movable section carrying a retaining pin;    wherein the movable section is arranged to move along the retaining pin in a reciprocating motion along the longitudinal axis of the fixed section.    
   
   
       2 . A reciprocating work head according to  claim 1 , wherein the movable section has a plurality of bristles extending through a plurality of apertures therein, and the fixed section has a plurality of bristles extending through a plurality of apertures therein, wherein the plurality of bristles of the fixed section are longer than the plurality of bristles of the movable section.  
   
   
       3 . A reciprocating work head according to  claim 1 , further comprising a drive lug mounted on the movable section through which motion may be applied to cause the movable section to reciprocate.  
   
   
       4 . A reciprocating work head according to  claim 3 , wherein said retaining pin passes through said drive lug to guide the reciprocating motion of the movable section.  
   
   
       5 . A reciprocating work head according to  claim 3 , wherein the drive lug is arranged to project through a corresponding slot in the fixed section.  
   
   
       6 . A reciprocating work head according to  claim 1 , wherein the movable section reciprocates along a first face of the fixed section.  
   
   
       7 . A reciprocating head according to  claim 2 , wherein said movable section and/or said fixed section each have a body portion, and wherein said body portion of said fixed brush section and/or said movable brush section is/are formed of polyoxymethylene (POM) plastic material.  
   
   
       8 . A reciprocating head according to  claim 1  wherein said fixed section comprises a brush head.  
   
   
       9 . A reciprocating head according to  claim 1  wherein said movable section comprises a brush head.  
   
   
       10 . An electric brush assembly comprising a reciprocating work head according to  claim 1.