Toothbrush head

Abstract

A toothbrush head has a body, multiple cavities, and multiple through holes. The body is an elongated bar and further has a top surface and a bottom surface. The multiple cavities are recessed into the top surface at spaced intervals. Multiple bristle units are respectively mounted in the multiple cavities. The multiple through holes are formed on the body. The multiple through holes are adjacent to the multiple cavities. The multiple through holes are defined through the top surface and the bottom surface directly. The multiple through holes are utilized to remove the moisture and the food residues easily. Furthermore, the multiple through holes may also increase air convection around the toothbrush head. The toothbrush head may be air-dried fast and avoid bacteria breeding effectively.

What is claimed is: 
     
         1 . A toothbrush head comprising:
 a body being an elongated bar and having a top surface and a bottom surface;   multiple cavities recessed into the top surface at spaced intervals;   multiple bristle units respectively mounted in the multiple cavities; and   multiple through holes defined through the top surface and the bottom surface;   wherein the multiple cavities disconnect from one another.   
     
     
         2 . The toothbrush head as claimed in  claim 1 , wherein a rubber layer covers the bottom surface; the rubber layer comprises multiple through apertures, and the multiple through apertures connect to the multiple through holes respectively. 
     
     
         3 . The toothbrush head as claimed in  claim 2 , wherein the rubber layer comprises a lower surface away from the body; multiple protrusions are formed on the lower surface at spaced intervals. 
     
     
         4 . The toothbrush head as claimed in  claim 3 , wherein the multiple protrusions are spherical or hemispherical. 
     
     
         5 . The toothbrush head as claimed in  claim 4 , wherein a number of the multiple cavities is larger than a number of the through holes; each of the multiple through apertures is encompassed by the multiple protrusions. 
     
     
         6 . The toothbrush head as claimed in  claim 4 , wherein a number of the multiple cavities is less than a number of the through holes; each of the multiple cavities is defined through the body from the top surface toward the bottom surface; each of the multiple protrusions is encompassed by the multiple through apertures.