Brush head of a toothbrush

Abstract

A brush head of a toothbrush has a head body and multiple hair assemblies. The head body has a mounting surface and multiple mounting holes defined in the mounting surface. The hair assemblies are mounted respectively in the mounting holes. Each hair assembly comprising at least one bundle of soft hairs and a bundle of hard hairs. The at least one bundle of soft hairs is mounted in a corresponding one of the mounting holes and has a hardness. The bundle of hard hairs is mounted in the corresponding mounting hole, is enclosed by the at least one bundle of soft hairs and has a hardness larger than that of the soft hairs.

1 . A brush head of a toothbrush comprising:
 a head body having a mounting surface and multiple mounting holes defined in the mounting surface; and   multiple hair assemblies mounted respectively in the mounting holes and each hair assembly comprising   at least one bundle of soft hairs mounted in a corresponding one of the mounting holes and having a hardness; and   a bundle of hard hairs mounted in the corresponding mounting hole, enclosed by the at least one bundle of soft hairs and having a hardness larger than that of the soft hairs.   
   
   
       2 . The brush head as claimed in  claim 1 , wherein the mounting holes are circular; and
 each hair assembly has one bundle of soft hairs being annular and mounted around the bundle of hard hairs of the hair assembly.   
   
   
       3 . The brush head as claimed in  claim 1 , wherein the mounting holes are ellipsoid;
 each hair assembly has two bundles of soft hairs being mounted respectively at two ends of the corresponding ellipsoid mounting hole; and   the bundle of hard hairs of each hair assembly is enclosed between the two bundles of soft hairs of the hair assembly.   
   
   
       4 . The brush head as claimed in  claim 1 , wherein
 the mounting holes comprises multiple circular first mounting holes and multiple ellipsoid second mounting holes;   the hair assemblies comprises multiple first hair assemblies mounted respectively in the circular first mounting holes and multiple second hair assemblies mounted respectively in the ellipsoid second mounting holes;   each first hair assembly has one bundle of soft hairs being annular and mounted around the bundle of hard hairs of the first hair assembly;   each second hair assembly has two bundles of soft hairs being mounted respectively at two ends of the corresponding ellipsoid second mounting hole; and   the bundle of hard hairs of each second hair assembly is enclosed between the two bundles of soft hairs of the second hair assembly.   
   
   
       5 . The brush head as claimed in  claim 4 , wherein
 the first mounting holes are arranged in two parallel lines; and   the second mounting holes are arranged around the first mounting holes.   
   
   
       6 . The brush head as claimed in  claim 5 , wherein the head body further comprises multiple massage elements mounted on and protruding from the mounting surface of the head body. 
   
   
       7 . The brush head as claimed in  claim 6 , wherein the massage elements comprises multiple massage rods arranged in two lines; and
 the hair assemblies are mounted between the two lines of the massage rods.   
   
   
       8 . The brush head as claimed in  claim 7 , wherein each massage rod has a flat top. 
   
   
       9 . The brush head as claimed in  claim 6 , the head body further comprises multiple third mounting holes; and
 each third mounting hole has one bundle of soft hairs mounted in the third mounting hole.   
   
   
       10 . The brush head as claimed in  claim 6 , wherein the massage elements comprises two massage plates parallel with each other and two curved massage panels; and
 the hair assemblies are mounted between the massage plates.   
   
   
       11 . The brush head as claimed in  claim 1 , wherein the head body further comprises multiple massage elements mounted on and protruding from the mounting surface of the head body. 
   
   
       12 . The brush head as claimed in  claim 11 , wherein the massage elements comprises multiple massage rods arranged in two lines; and
 the hair assemblies are mounted between the two lines of the massage rods.   
   
   
       13 . The brush head as claimed in  claim 12 , wherein each massage rod has a flat top. 
   
   
       14 . The brush head as claimed in  claim 11 , wherein the massage elements comprises two massage plates parallel with each other and two curved massage panels; and
 the hair assemblies are mounted between the massage plates.   
   
   
       15 . The brush head as claimed in  claim 4 , the head body further comprises multiple third mounting holes; and
 each third mounting hole has one bundle of soft hairs mounted in the third mounting hole.