Plastic hinge

Abstract

A plastic hinge having elastic deformation is provided. The plastic hinge includes a body formed of plastic and shaped as a solid cylinder, the body including a groove having a depth extending from an outer surface of the body to an axial center of the body, the groove including a bottom and an opening, a width of the groove being gradually increased from the bottom to the opening, and the bottom being shaped as an U.

1 . A plastic hinge, comprising:
 a body formed of plastic and shaped as a solid cylinder, the body including a groove having a depth extending from an outer surface of the body to an axial center of the body, the groove including a bottom portion and an opening, a width of the groove being gradually increased from the bottom portion to the opening, and the bottom portion being shaped as a U.   
     
     
         2 . The plastic hinge of  claim 1 , wherein the body is formed by injection molding. 
     
     
         3 . The plastic hinge of  claim 1 , wherein a diameter of the body is between 1.4 mm and 3.5 mm. 
     
     
         4 . The plastic hinge of  claim 1 , wherein the bottom portion has a first width, the opening has a second width, and the second width is greater than the first width. 
     
     
         5 . The plastic hinge of  claim 4 , wherein the first width is 0.3 mm. 
     
     
         6 . The plastic hinge of  claim 4 , wherein the second width is 0.38 mm. 
     
     
         7 . The plastic hinge of  claim 1 , wherein the bottom portion of the groove substantially surrounds the axial center of the body.