Multipurpose & compatible pillow/headrest

Abstract

Provided is a headrest structure. The headrest structure includes an ergonomically shaped hole in the shape of a back of a human head formed in a soft-textured material of latex foam or memory foam, and an auxiliary tray and frame that can be assembled with the back of a chair to relieve a neck and a head from discomfort.

1 . A headrest structure comprising:
 a headrest ( 3 ) having a concave curved surface including a neck support configured to support a neck of a user and a head support configured to support a head of the user; and a headrest tray ( 20 ) configured to surround an external surface of the headrest to be coupled thereto.   
     
     
         2 . The headrest structure according to  claim 1 , wherein the headrest tray ( 20 ) is inserted into and installed on a top end of a chair. 
     
     
         3 . The headrest structure according to  claim 2 , wherein the headrest includes the concave curved surface whose shape and size are formed depending on a shape and size of a head of a sitter, and the headrest is replaced to be inserted into a quadrilateral groove formed on the back depending on the shape and size of the head of the sitter. 
     
     
         4 . The headrest structure according to  claim 2 , wherein the headrest includes a concave curved surface whose height and direction are adjustable. 
     
     
         5 . A headrest structure comprising:
 a headrest ( 3 ) having a concave curved surface including a neck support configured to support a neck of a user and a head support configured to support a head of the user; an auxiliary frame ( 9 ) combined with the headrest to be coupled thereto;   
     
     
         6 . The headrest structure according to  claim 5 , wherein an insertion rod ( 8 ) formed on a bottom surface of the auxiliary frame. 
     
     
         7 . A headrest structure comprising:
 a headrest ( 3 ) having a concave curved surface including a neck support configured to support a neck of a user and a head support configured to support a head of the user; and   an angle adjustment pad ( 34 ) inserted into a bottom surface of the headrest ( 3 ) to incline an angle of the headrest ( 3 ), wherein the angle adjustment pad ( 34 ) has a slope having a predetermined inclination.