Toothbrush

Abstract

A toothbrush has a bristle support head and a brush cluster. The bristle support head has a mounting surface having a long axis and a short axis. The brush cluster is mounted on the mounting surface of the bristle support head, and has at least one bristle column being parallel with the short axis of the mounting surface, at least one bristle row being parallel with the long axis of the mounting surface and intersecting with the at least one bristle column, and at least one bristle tuft mounted in multiple partitions respectively surrounded by the at least one bristle column and by the at least one bristle column and the at least one bristle row. With the above bristle structure, the toothbrush can effectively contact with the slits between teeth to clean the tartar in the slits.

1 . A toothbrush comprising:
 a bristle support head having a mounting surface having a long axis and a short axis defined on the mounting surface and intersecting with each other;   a brush cluster securely mounted on the mounting surface of the bristle support head, and having:
 at least one bristle column being parallel with the short axis of the mounting surface, each one of the at least one bristle column having multiple bristles densely mounted on the mounting surface; 
 at least one bristle row being parallel with the long axis of the mounting surface and intersecting with the at least one bristle column, each one of the at least one bristle row having multiple bristles densely mounted on the mounting surface, and a free end; and 
 at least one bristle tuft respectively mounted in multiple partitions respectively surrounded by the at least one bristle column and by the at least one bristle column and the at least one bristle row, each one of the at least one bristle turf having multiple bristles densely mounted on the mounting surface, and a free end. 
   
     
     
         2 . The toothbrush as claimed in  claim 1  further comprising two additional bristle tufts respectively formed on two ends of the bristle cluster. 
     
     
         3 . The toothbrush as claimed in  claim 2 , wherein the at least one bristle row and the at least one bristle tuft are of different heights, and the free ends of the at least one bristle row and the at least one bristle tuft form an undulated brushing surface. 
     
     
         4 . The toothbrush as claimed in  claim 3 , wherein the toothbrush has multiple bristle columns, two of the bristle columns are respectively adjacent to the two bristle tufts on the two ends of the bristle cluster, and are arced and parallel with the short axis of the mounting surface, and all other bristle columns between the two arced bristle columns are parallel with the short axis of the mounting surface. 
     
     
         5 . The toothbrush as claimed in  claim 4 , wherein the bristles of each of the at least one bristle tuft and the two additional bristle tufts are divided into an outer layer, an intermediate layer and an inner layer, and the outer layer, the intermediate layer and the inner layer respectively have three hardness values increasing from outside in.