Inside diameter-adjustable ring

Abstract

The present invention pertains to an inside diameter-adjustable ring in which the inside diameter of the ring is adjustable, and more specifically, to an inside diameter-adjustable ring which comprises: an outside ring which has coupling grooves formed along the inner surface thereof; and an inside ring which is inserted into said coupling grooves and forms the inside diameter of the ring, wherein: separation prevention ridges are formed in the coupling grooves of said outside ring in order to prevent the inserted inside ring from being taken out; a curved portion which is bent to the inner side is formed along the outer surface of said inside ring, so that an air gap is formed on the inner side by the curved portion when said inside ring is inserted into the coupling grooves; a plurality of holes are formed on said inside ring; minerals which emit anions and far-infrared radiation are contained in said inside ring, and embossed parts are formed on the inner surface of said inside ring such that a consumer is able to extend or reduce the inside diameter of the ring by directly changing only the inside ring if the inside diameter of the ring has a huge difference in size; since said inside ring is made of an elastic rubber or silicon material, a certain change in the degree of size is available even with elasticity thereof without changing said inside ring; physical shock applied from the outside is absorbed into the inside ring by an air cushion generated by said inside ring, whereby a finger on winch the ring is worn is protected; the plurality of holes are formed on said inside ring in such a manner that sweat or moisture which remains between the finger and the ring is evaporated through the holes; and since the minerals which emit the anions and the far-infrared radiation are contained, the invention has a health enhancement function.

What is claimed: 
     
         1 . An inner diameter-adjustable ring comprising:
 an outside ring which has a coupling groove formed along an inner circumferential surface thereof; and   an inside ring which is coupled in the coupling groove and defines an inner diameter of the inner diameter-adjustable ring.   
     
     
         2 . The inner diameter-adjustable ring according to  claim 1 , wherein separation prevention ridges are formed in the coupling groove of the outside ring in order to prevent the inserted inside ring from coming off the groove. 
     
     
         3 . The inner diameter-adjustable ring according to  claim 1 , wherein a curved portion bent inward is formed along an outer circumferential surface of the inside ring, so that an air gap is formed on an inner side between the inside ring and outside ring by the curved portion when the inside ring is inserted in the coupling groove. 
     
     
         4 . The inner diameter-adjustable ring according to  claim 1 , wherein a plurality of through holes is formed in the inside ring. 
     
     
         5 . The inner diameter-adjustable ring according to  claim 1 , wherein minerals emitting anions or far-infrared radiation are contained in the inside ring. 
     
     
         6 . The inner diameter-adjustable ring according to  claim 1 , wherein pressing grooves are formed on inner circumferential edges of the inside ring. 
     
     
         7 . The inner diameter-adjustable ring according to  claim 1 , wherein embossed parts are formed on the inner circumferential surface of the inside ring. 
     
     
         8 . The inner diameter-adjustable ring according to  claim 1 , wherein a plurality of viewing holes are formed along outer circumferential surface of the outside ring for seeing the inside ring from the outside. 
     
     
         9 . The inner diameter-adjustable ring according to  claim 1 , wherein the inside ring is constructed in the form of mesh (net).