Barbell disc automatically mounted on and released from barbell rod

Abstract

The present invention relates to a barbell disc configured such that the barbell disc can be mounted by being pushed into a barbell rod and released by pulling a handle. Specifically, the barbell disc is characterized by comprising: a barbell disc body which has an opening portion formed on the outer circumferential surface and an elongated groove extending to the center so that a barbell rod can be inserted into the barbell disc body after being mounted by pulling a handle; a recovery shaft mounted on the center line of the width of the elongated groove of the barbell disc body; a handle which is mounted to the barbell disc body and to which is mounted a shaft insertion part that is brought into contact with the recovery shaft by a recovery force from a recovery means; and a locking device which locks the barbell rod to the center of the barbell disc body and prevents the barbell rod from moving when the recovery shaft and the shaft insertion part come into contact as the barbell rod is inserted into the end of the elongated groove, and which separates the barbell rod from the center of the barbell disc body when the recovery shaft and the shaft insertion part are pulled away from each other by pulling the handle toward the outside of the barbell disc body.

What is claimed is: 
     
         1 . A barbell disc comprising:
 a barbell disc body which has an opening formed on the outer circumferential surface and an elongated groove extending from the opening to the center so that a barbell rod can be inserted into the barbell disc body;   a recovery shaft mounted on the center line of the width of the elongated groove of the barbell disc body;   a handle which is mounted to the barbell disc body in a movable way and having a shaft insertion part getting in contact with the recovery shaft by restoring force of a recovery means; and   a locking device which locks the barbell rod to the center of the barbell disc body not to move when the recovery shaft and the shaft insertion part come into contact with each other as the barbell rod is inserted into the end of the elongated groove, and which separates the barbell rod from the center of the barbell disc body when a user pulls the handle outwards from the barbell disc body so that the recovery shaft and the shaft insertion part are separated from each other.   
     
     
         2 . The barbell disc according to  claim 1 , wherein the locking device comprises: a first operating plate and a second operating plate mounted symmetrically with the first operating plate with respect to the central line; and a first insertion groove and a second insertion groove formed inside the barbell disc body so that the first operating plate and the second operating plate are respectively inserted into the first insertion groove and the second insertion groove, wherein when the shaft insertion part of the handle comes into contact with the recovery shaft, the barbell rod is locked by the first operating plate and the second operating plate when. 
     
     
         3 . The barbell disc according to  claim 2 , wherein the first operating plate and the second operating plate respectively rotate around eccentric shafts mounted in the first insertion groove and the second insertion groove, and in the case that each of the operating plates is divided into an upper part and a lower part based on the eccentric shaft, each of the operating plates has a C-shaped body in which the lower part is longer than the upper part. 
     
     
         4 . The barbell disc according to  claim 1 , wherein the recovery means is any one among a magnet, an elastic belt, and a spring. 
     
     
         5 . The barbell disc according to  claim 3 , wherein a curved insertion groove is formed on the shaft insertion part so that the recovery shaft is inserted into the curved insertion groove.