Dust tray

Abstract

A dust tray includes: a collection chamber having a rectangular bottom and surrounding walls extending upward from four sides of the bottom; a tubular handle extending through one of the surrounding walls of the collection chamber with no gap therebetween, the handle being movable in a direction in which the handle extends; and a suction head having an opening elongated in a direction orthogonal to the direction in which the handle extends, the suction head being provided at a proximal end of the handle, the proximal end being positioned inside the collection chamber, the opening facing the bottom of the collection chamber and being proximate thereto with a clearance allowing the dust particles to pass therethrough, whereby a path is provided from the opening into the handle, wherein a distal end of the handle is connectable to an external suction source.

1 . A dust tray included in a dust collection mechanism that collects and stores dust particles, the dust tray comprising:
 a collection chamber having a rectangular bottom and surrounding walls extending upward from four sides of the bottom;   a tubular handle extending through one of the surrounding walls of the collection chamber with no gap therebetween, the handle being movable in a direction in which the handle extends; and   a suction head having an opening elongated in a direction orthogonal to the direction in which the handle extends, the suction head being provided at a proximal end of the handle, the proximal end being positioned inside the collection chamber, the opening facing the bottom of the collection chamber and being proximate thereto with a clearance allowing the dust particles to pass through the opening, whereby a path is provided from the opening into the handle,   wherein a distal end of the handle is connectable to an external suction source.   
   
   
       2 . The dust tray according to  claim 1 , wherein the length of the opening is the same as the width of the bottom, the width being a dimension in the direction orthogonal to the direction in which the handle extends. 
   
   
       3 . The dust tray according to  claim 1 ,
 wherein the suction head has scrapers on front and rear sides thereof, respectively, positioned in the direction in which the handle extends, the scrapers being elongated in the direction orthogonal to the direction in which the handle extends, and pushing and evening out the dust particles, and   wherein the length of the scrapers is the same as the width of the bottom, the width being a dimension in the direction orthogonal to the direction in which the handle extends.   
   
   
       4 . The dust tray according to  claim 1 ,
 wherein surfaces of the scrapers are perpendicular to the bottom of the collection chamber, and   wherein inner surfaces of the surrounding walls of the collection chamber on the front and rear sides in the direction in which the handle extends are sloped such that a distance between the inner surfaces increases in a direction orthogonally away from the bottom of the collection chamber.   
   
   
       5 . A dust tray unit comprising a plurality of the dust trays according to  claim 1 , the dust trays being arranged side by side in the direction orthogonal to the direction in which the handle extends.