Adjustable and changeable weigth training device

Abstract

An adjustable and changeable weight training device includes a top body, an upper body, a collar, at least one weight disk, a lower body, a bottom board and a connection member which is inserted through the parts. The number of the weight disks is adjustable to get a desired weight. The top body can be replaced with other configurations for different purposes, such as a dumbbell, a kettle-shaped dumbbell or a barbell.

1 . An adjustable and changeable weight training device, comprising a top body, an upper body, at least one weight disk, a lower body and a connection member;
 the top body having a post extending downward from a central portion thereof, the post having a central threaded hole;   the upper body being located under the top body, the upper body having a central through hole for insertion of the post of the top body;   the weight disk having a ring shape and being located under the top body, the weight disk having a central through hole;   the lower body being located under the weight disk, the lower body having a central through hole corresponding to the central through hole of the weight disk;   the connection member comprising a threaded body, the threaded body being inserted through the lower body, the weight disk and the upper body and screwed to the threaded hole of the top body.   
     
     
         2 . The adjustable and changeable weight training device as claimed in  claim 1 , wherein the top body further comprises a pair of engaging portions transversely extending from two sides of the post and a handle extending upward from the pair of engaging portions, and the upper body has a pair of engaging recesses at two sides of the central through hole of the upper body to accommodate the pair of engaging portions of the top body. 
     
     
         3 . The adjustable and changeable weight training device as claimed in  claim 1 , wherein the upper body has a bottom formed with a chamber to accommodate a collar, the collar has a ring shape and comprises a central through hole and a pair of recesses at two sides of the central through hole of collar. 
     
     
         4 . The adjustable and changeable weight training device as claimed in  claim 1 , wherein the weight disk has a concave portion around the central through hole of the weight disk and a raised ring around the concave portion, a bottom of the weight disk has a convex ring corresponding to the raised ring. 
     
     
         5 . The adjustable and changeable weight training device as claimed in  claim 4 , wherein the lower body has a concave portion around the central through hole of the lower body and a raised ring around the concave portion of the lower body, a bottom of the lower body has a chamber and an annular rib in the chamber, the annular rib has a reduced outer side, a bottom board is a flat board and has a central through hole, the bottom board is located in the annular rib at the bottom of the lower body. 
     
     
         6 . The adjustable and changeable weight training device as claimed in  claim 5 , wherein the bottom board has a bottom surface which is provided with radial non-skid portions. 
     
     
         7 . The adjustable and changeable weight training device as claimed in  claim 1 , wherein the connection member further comprises a positioning board, the positioning board is pivotally connected to the threaded body with a pivot member so that the positioning board is able to be turned relative to the threaded body. 
     
     
         8 . The adjustable and changeable weight training device as claimed in  claim 1 , wherein the lower body is made of a soft material. 
     
     
         9 . The adjustable and changeable weight training device as claimed in  claim 1 , wherein the top body has a rod extending from one end of the post and being coaxial with the post, an opposing end of the rod is connected with another top body, another upper body, another one or more weight disk, another lower body, another the connection member. 
     
     
         10 . The adjustable and changeable weight training device as claimed in  claim 9 , wherein the upper body has a pair of engaging recesses at two sides of the central through hole of the upper body to accommodate the pair of engaging portions of the top body.