Multi-layered hairpin

Abstract

A hairpin includes a first layer portion; a second layer portion connected with a first end of the first layer portion via a first bent joint, and disposed at one side of the first layer portion; and a third layer portion connected with a second end of the first layer portion via a second bent joint, and disposed at another side of the first layer portion. A distance between the second end of the first layer portion and the second layer portion is changeable to open or close a first entrance for hair, and a distance between the first end of the first layer portion and the third layer portion is changeable to open or close a second entrance for hair.

What is claimed is: 
     
         1 . A hairpin, comprising:
 a first layer portion;   a second layer portion connected with a first end of the first layer portion via a first bent joint, and disposed at one side of the first layer portion; and   a third layer portion connected with a second end of the first layer portion via a second bent joint, and disposed at another side of the first layer portion,   wherein a distance between the second end of the first layer portion and the second layer portion is changeable to open or close a first entrance for hair, and a distance between the first end of the first layer portion and the third layer portion is changeable to open or close a second entrance for hair.   
     
     
         2 . The hairpin according to  claim 1 , wherein at least one of the first, second and third portions are wavy. 
     
     
         3 . The hairpin according to  claim 1 , wherein the first layer portion is constructed with two strands of a strip material. 
     
     
         4 . The hairpin according to  claim 3 , wherein each of the second and third layer portions and the first and second bent joints is integrally formed with the first layer portion, and constructed with two strands of the strip material extending from the two strands of the first layer portion at the first end and the second end. 
     
     
         5 . The hairpin according to  claim 4 , wherein the two strands of the first layer portion at the first end are bent outwards to form the first bent joint so that the second layer portion includes a lateral section and an elongated section. 
     
     
         6 . The hairpin according to  claim 5 , wherein the two strands of the first layer portion at the second end are bent outwards to form the second bent joint so that the third layer portion includes a lateral section and an elongated section. 
     
     
         7 . The hairpin according to  claim 4 , wherein the two strands of the second layer portion are connected at one end to form an integral free end. 
     
     
         8 . The hairpin according to  claim 7 , wherein the two strands of the third layer portion are connected at one end to form an integral free end. 
     
     
         9 . The hairpin according to  claim 7 , wherein the two strands of the second layer portion form a closed loop. 
     
     
         10 . The hairpin according to  claim 9 , wherein the closed loop is symmetric relative to the first layer portion. 
     
     
         11 . The hairpin according to  claim 9 , wherein a shape of the closed loop is selected from a group consisting of triangle, diamond, circle, oval, crescent, and combinations thereof. 
     
     
         12 . The hairpin according to  claim 4 , wherein the two strands of the second layer portion and/or the two strands of the third layer portions have free ends. 
     
     
         13 . The hairpin according to  claim 3 , wherein the strip material is a metal strip. 
     
     
         14 . The hairpin according to  claim 3 , wherein the strip material is a plastic strip. 
     
     
         15 . The hairpin according to  claim 1 , wherein the first entrance and the second entrance are oriented in different directions. 
     
     
         16 . A hairpin integrally formed of a strip material, and comprising:
 a first layer portion constructed with at least one strand of the strip material;   a second layer portion extending from a first end of the first layer portion transversely, reversely and toward one side of the first layer portion; and   a third layer portion extending from a second end of the first layer portion transversely, reversely and toward another side of the first layer portion,   wherein a distance between the second end of the first layer portion and the second layer portion is changeable to open or close a first entrance for hair, and a distance between the first end of the first layer portion and the third layer portion is changeable to open or close a second entrance for hair.   
     
     
         17 . The hairpin according to  claim 16 , wherein each of the first, second and third layer portions is constructed with two strands of the strip material. 
     
     
         18 . The hairpin according to  claim 16 , wherein the strip material is a metal strip. 
     
     
         19 . The hairpin according to  claim 16 , wherein the strip material is a plastic strip. 
     
     
         20 . The hairpin according to  claim 16 , wherein the first entrance and the second entrance are oriented in different directions.