FAST-ADJUSTING DUMBBELL AND DUMBBELL KIT

摘要

The present invention relates to a fast-adjusting dumbbell, comprising a dumbbell body and dumbbell pieces cumulatively attached to both ends of the dumbbell body. The dumbbell body includes a grip rod, a planetary gear system, and a telescopic rod. The grip rod is rotated and drives the planetary gear system to realize the expansion and contraction of the telescopic rod, thereby adjusting the number of dumbbell pieces, which is convenient to operate and easy to implement. Both ends of the grip rod are assembled with flange driving members, the planetary gear system includes an outer casing, through the installation mode that the flange driving member is engaged with the planetary gear system, the planetary gear mechanism is disposed enclosedly, and a load-bearing iron ring is also disposed in the planetary gear system to play a load-bearing and limiting effect on the planetary carrier.