Patent ID: 7775948

Claim:
A dumbbell structure, comprising: a hand grip, a clamping portion is located on two ends of the hand grip, a penetrating clamping hole is defined on each of the clamping portions, and a clamping column is respectively located within each of the clamping holes, an end surface of each of the clamping portions is configured with a press operation recess, and a pressure operation column is located within each of the press operation recesses; weights, a penetrating hole is defined in each of the weights, and a clamping groove is configured within each of the holes, the clamping portions and the press operation columns are able to be respectively disposed therein; press operation pieces, the press operation pieces are respectively configured with a press portion able to press the press operation column, wherein a spring is mounted on one end of each of the clamping columns and a clamping end is located at the other end, the center section of the clamping column is configured with an actuating groove.