Cosmetic brush and method of fixing tuft of bristles of said cosmetic brush

Abstract

Disclosed herein is a cosmetic brush and method of fixing tuft of bristles of said cosmetic brush, which can prevent twist of a tuft of bristles, when the tuft of bristles is rotated in a liquid cosmetics having high-viscosity upon the screw-coupling of a cap and a cosmetic container with each other, such that the tuft of bristles implanted at an end of a stem is firmly fixed by means of a cylindrical-shaped metal member.

1 . A cosmetic brush comprising; 
 a cylindrical cap; and    a upright-standing stem formed at the inner center of the cap and having a tuft of bristles, which has an adhesive portion formed at an end thereof, inserted into an end of the stem, the tuft of bristles being fixed inside the stem by means of a pressurized point formed by punching the outer periphery of the stem;    wherein a cylindrical-shaped metal member is coupled around the outer periphery of the lower portion of the tuft of bristles and is pressurized so that both ends of the cylindrical-shaped metal member is overlapped by a predetermined width, to thereby fix the tuft of bristles inside the cylindrical-shaped metal member, the cylindrical-shaped metal member being formed by rolling a metal piece; and    wherein the pressurized point is formed by punching the outer periphery surface of the stem after inserting the cylindrical-shaped metal member inside the stem, so that the tuft of bristles and the cylindrical-shaped metal member are firmly fixed inside the stem.    
   
   
       2 . The cosmetic brush according to  claim 1 , wherein the cylindrical-shaped metal member is formed with protruding portions and coupling grooves in series at the both sides of the metal piece, and wherein the metal piece is rolled up around the outer periphery surface of the tuft of bristles, so that the protruding portion and the coupling groove formed at one side of the metal piece are coupled with the coupling groove and the protruding portion formed at the other side of the metal piece, respectively, to thereby allow the cylindrical-shaped metal member to fix the tuft of bristles, as well as allow the cylindrical-shaped metal member inserted inside the stem to be fixed by means of the pressurized point formed by punching the outer periphery surface of the stem.  
   
   
       3 . A method of fixing a tuft of bristles of a cosmetic brush, the method comprising, the steps of; 
 processing a thin metal plate with a press so that quadrilateral metal pieces are continuously formed in such a manner as to be connected with the metal plate by means of a narrowed connecting plate;    primarily bending the metal pieces with a press such that both ends of the metal piece are to be bent;    secondarily bending the metal pieces so that the metal piece bent at both ends thereof is pressurized to be formed in a semicircular shape;    tertiarily bending the metal pieces so that the metal piece bent in the semicircular shape is further pressurized to be formed in a circular shape in such a manner as to be overlapped at both ends thereof in some degree;    inserting the tuft of bristles into the cylindrical-shaped metal member after cutting the connecting plate and removing the cylindrical-shaped metal member from the metal plate;    fixing the tuft of bristles inside the cylindrical-shaped metal member in such a manner that the outer periphery surface of the cylindrical-shaped metal member is pressurized, so that both ends thereof is overlapped to tighten the lower portion of the tuft of bristles; and    fixing and pressing the cylindrical-shaped metal member such that a pressurized point is formed by punching the outer periphery surface of the stem so as to be protruded toward inside the stem, after the cylindrical-shaped metal member, in which the tuft of bristles is fixed, is inserted into a coupling hole formed inside the stem.