Hand held appliance

Abstract

A hand held appliance includes a housing having an outer wall, an inner structure disposed within the outer wall, and an end wall that extends across the outer wall and is attached to the housing via the inner structure, wherein an inner portion of the end wall defines a central aperture through the end wall and comprises a protrusion that engages with a cooperating groove of the inner structure.

1 . A hand held appliance comprising:
 a housing having an outer wall;   an inner structure disposed within the outer wall; and   an end wall that extends across the outer wall and is attached to the housing via the inner structure, wherein an inner portion of the end wall defines a central aperture through the end wall and comprises a protrusion that engages with a cooperating groove of the inner structure.   
     
     
         2 . The appliance of  claim 1 , wherein the housing has a longitudinal axis along which the outer wall extends, and wherein both the groove and the protrusion are parallel to the longitudinal axis of the housing. 
     
     
         3 . The appliance of  claim 1 , wherein the end wall forms part of a filter unit and the filter unit additionally comprises a mesh filter and a filter frame surrounding a periphery of the mesh filter. 
     
     
         4 . The appliance of  claim 1 , wherein the end wall is non-continuous around the inner structure. 
     
     
         5 . The appliance of  claim 1 , further comprising a rib that extends radially outwardly from the inner structure and along at least part of the inner structure. 
     
     
         6 . The appliance of  claim 5 , wherein the end wall forms part of a filter unit that additionally comprises a mesh filter and a filter frame, and the filter frame abuts the rib on either side of the rib when the end wall is attached to the inner structure. 
     
     
         7 . The appliance of  claim 5 , wherein the rib comprises a recess extending partially along the rib. 
     
     
         8 . The appliance of  claim 1 , wherein the end wall and the inner structure are configured so that the end wall is pushed towards the handle to attach the end wall to the inner structure. 
     
     
         9 . The appliance of  claim 1 , wherein the end wall comprises an outer edge, and when the end wall has been attached to the inner structure, the outer edge is adjacent to the outer wall or abuts the outer wall. 
     
     
         10 . The appliance of  claim 9 , wherein the outer edge forms a mating face for an end face of the outer wall. 
     
     
         11 . The appliance of  claim 9 , wherein the outer edge of the end wall extends across the end wall of the handle so an outer diameter of the handle is the same as that of the end wall where the end wall meets the outer wall. 
     
     
         12 . The appliance of  claim 1 , wherein the housing is a handle. 
     
     
         13 . The appliance of  claim 1 , wherein the appliance is a hair care appliance. 
     
     
         14 . The appliance of  claim 13 , wherein the hair care appliance is a hairdryer. 
     
     
         15 . The appliance of  claim 13 , wherein the hair care appliance is a hot styling appliance. 
     
     
         16 . A hand held appliance comprising:
 a tubular outer wall comprising a plurality of apertures that form at least a portion of an air flow inlet to the appliance;   an inner structure disposed within the outer wall; and   an end wall that extends from the outer wall radially inwardly and is attached to the inner structure.   
     
     
         17 . The appliance of  claim 16 , wherein the end wall is located at a first end of the tubular outer wall and the plurality of apertures extends from the first end. 
     
     
         18 . The appliance of  claim 16 , wherein the plurality of apertures extends around the tubular outer wall. 
     
     
         19 . The appliance of  claim 16 , wherein the tubular outer wall is cylindrical. 
     
     
         20 . The appliance of  claim 16 , wherein the end wall comprises at least one aperture that forms a second portion of the air flow inlet. 
     
     
         21 . The appliance of  claim 16 , wherein an inner portion of the end wall attaches to the inner structure. 
     
     
         22 . The appliance of  claim 21 , wherein the inner portion comprises at least one protrusion that engages with at least one cooperating groove of the inner structure. 
     
     
         23 . The appliance of  claim 22 , wherein the tubular outer wall has a longitudinal axis, and wherein the at least one groove and the at least one protrusion are parallel to the longitudinal axis of the tubular outer wall. 
     
     
         24 . The appliance of  claim 16 , wherein the air flow inlet to the appliance is formed only from the plurality of apertures in the tubular outer wall. 
     
     
         25 . The appliance of  claim 16 , wherein the plurality of apertures extends longitudinally along the tubular outer wall. 
     
     
         26 . The appliance of  claim 16 , further comprising a filter located radially inward of the plurality of apertures for filtering air flow from the plurality of apertures. 
     
     
         27 . The appliance of  claim 16 , wherein the end wall forms part of a filter unit and the filter unit additionally comprises a mesh filter and a filter frame surrounding a periphery of the mesh filter. 
     
     
         28 . The appliance of  claim 16 , wherein the end wall is non-continuous around the inner structure. 
     
     
         29 . The appliance of  claim 16 , further comprising a rib that extends radially outwardly from the inner structure and along at least part of the inner structure. 
     
     
         30 . The appliance of  claim 29 , wherein the end wall forms part of a filter unit that additionally comprises a mesh filter and a filter frame, and the filter frame abuts the rib on either side of the rib when the end wall is attached to the inner structure. 
     
     
         31 . The appliance of  claim 29 , wherein the rib comprises a recess extending at least partially along a length of the rib. 
     
     
         32 . The appliance of  claim 16 , wherein the tubular outer wall forms at least a portion of a handle. 
     
     
         33 . The appliance of  claim 32 , wherein the handle extends from a main body of the appliance, and the end wall and the inner structure are configured so that the end wall is pushed towards the main body to attach the end wall to the inner structure. 
     
     
         34 . The appliance of  claim 32 , wherein the end wall comprises an outer edge that is aligned with an outer surface of the outer wall when the end wall has been attached to the inner structure. 
     
     
         35 . The appliance of  claim 16 , wherein the tubular outer wall is oval in cross-section. 
     
     
         36 . The appliance of  claim 16 , wherein the appliance is a hair care appliance. 
     
     
         37 . The appliance of  claim 36 , wherein the hair care appliance is a hairdryer. 
     
     
         38 . The appliance of  claim 37 , wherein the hair care appliance is a hot styling appliance.