| 摘要 |
PURPOSE: A weight adjustable dumbbell is provided to allow a user to adjust the weight of the dumbbell by adding weights according to his or her muscular strength. CONSTITUTION: A weight adjustable dumbbell includes: a basic body (20) which includes a bar and a basic weight plate (24) and is formed with nut holes at regular intervals on the outer surface of the basic weight plate; additional weight plates which are combined with the outer surface of the basic weight plate, are formed with bolt penetration holes (47) at regular intervals around the center thereof, and formed with nut holes (45) between the bolt penetration holes; and coupling bolts (50) with a thread part (54) which is coupled to the corresponding nut hole. |
