Toothbrush with Elastic Bristles

Abstract

A toothbrush comprises a plurality of bristles, each of which comprises an upper part and a lower part, wherein toughness of the lower part is smaller than the toughness of the upper part, an enrooting member into which the bristles are enrooted, wherein the enrooting member comprises a plurality of enrooting holes that receive the plurality of bristles, wherein each of enrooting hole comprises an enrooting recess that receives the lower part of the bristle. A method of manufacturing a toothbrush comprises steps of cutting a predetermined length from a plastic wire; processing the cut wire into a bristle having an upper part and a lower part, wherein toughness of the lower part is smaller than the toughness of the upper part; and enrooting the bristles into a plurality of enrooting holes of the enrooting member.

1 . A method of manufacturing a toothbrush, wherein the toothbrush comprises a plurality of bristles and an enrooting member into which the bristles are enrooted, comprising steps of:
 a) cutting a predetermined length from a plastic wire;   b) processing the cut wire into a bristle having an upper part and a lower part, wherein toughness of the lower part is smaller than the toughness of the upper part; and   c) enrooting the bristles into a plurality of enrooting holes of the enrooting member.   
     
     
         2 . The method of  claim 1 , wherein in the step of processing the bristle, the cut wire is placed in a jig that drops a core of the cut wire downward by vibration, wherein an end of the cut wire, which is connected to the core, is cut and forms the upper part of the bristle, and a portion of the cut wire from the other end to the dropped core is formed into a conical shape, which forms the lower part of the bristle. 
     
     
         3 . The method of  claim 2 , wherein part of the bristle is coated with reinforcing material. 
     
     
         4 . The method of  claim 1 , wherein in the step of processing the bristle, a part of the cut wire is gradually dipped in a chemical tapering solution thereby forming a conical shape, which forms the lower part of the bristle, and the remaining part forms the upper part of the bristle. 
     
     
         5 . The method of  claim 1 , wherein in the step of processing the bristle, one cut wire is tapered, by mechanical machining, which forms the lower part of the bristle, and another cut wire forms the upper part of the bristle, wherein the lower part is bonded to the upper part. 
     
     
         6 . A toothbrush comprising:
 a) a plurality of bristles, each of which comprises an upper part and a lower part, wherein toughness of the lower part is smaller than the toughness of the upper part;   b) an enrooting member into which the bristles are enrooted, wherein the enrooting member comprises a plurality of enrooting holes that receive the plurality of bristles, wherein each of enrooting hole comprises an enrooting recess that receives the lower part of the bristle.   
     
     
         7 . The toothbrush of  claim 6 , wherein the lower part has conical shape, the base of which is adjacent to the upper part. 
     
     
         8 . The toothbrush of  claim 7 , wherein the enrooting hole is horn-shaped thereby corresponds to the conical shape of the lower part of the bristle. 
     
     
         9 . The toothbrush of  claim 7 , wherein the enrooting member has a convex shape, and the enrooting holes are oval. 
     
     
         10 . The toothbrush of  claim 7 , wherein the enrooting here has a cavity and an inserting hole, through which the lower part of the bristle is inserted. 
     
     
         11 . The toothbrush of  claim 10 , wherein the enrooting hole further comprises a communication slit that communicates the cavity with the cavity of an adjacent enrooting hole. 
     
     
         12 . The toothbrush of  claim 10 , wherein the enrooting hole further comprises a drain hole near a bottom surface of the enrooting member. 
     
     
         13 . The toothbrush of  claim 10 , wherein communication slits are provided on sidewalls of a main enrooting body that receives the enrooting member. 
     
     
         14 . The toothbrush of  claim 13 , wherein communication slits are provided on a bottom of the main enrooting body. 
     
     
         15 . The toothbrush of  claim 10 , wherein the cavity comprises an upper cavity and a lower cavity, wherein the inserting hole is provided at the upper cavity.