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Pub. No.:    WO/2018/026043    International Application No.:    PCT/KR2016/009040
Publication Date: Fri Feb 09 00:59:59 CET 2018 International Filing Date: Thu Aug 18 01:59:59 CEST 2016
IPC: A63B 21/072
A63B 21/00
Applicants: SEO, Jeong Heon
Inventors: SEO, Jeong Heon
The present invention relates to a weight-adjustable dumbbell: capable of attaching/detaching individual support weight bodies to/from base weight bodies or attaching/detaching two or more support weight bodies by modularizing the same into a bundle according to a user's using requirements; and facilitating weight adjustment of the dumbbell. To this end, the weight-adjustable dumbbell comprises: a handle; base weight bodies respectively supported on both end portions of the handle; a first weight body and a second weight body sequentially stacked on the base weight bodies; and a first fastening member and a second fastening member for coupling each of the adjacent two weight bodies according to a stacking order, wherein: a base fastening part is penetratedly formed on the base weight bodies; a first passing part communicating with the base fastening part and a second fastening part arranged so as to be spaced from the first passing part in a clockwise direction are penetratedly formed in the first weight body; a second passing part communicating with the first fastening part and a first penetration part communicating with the first passing part by being spaced from the second passing part in a counterclockwise direction are penetratedly formed in the second weight body; a first fastening member is inserted/withdrawn into/from the first penetration part; the second weight body is separated from the first weight body when the screw coupling of a second fastening member is released; and the first weight body and the second weight body are simultaneously separated from the base weight bodies when the screw coupling of the first fastening member is released.