US 12,246,207 B1
Dumbbell with multiple gears of weight adjustment and dumbbell kit
Zhaohong Yu, Yongkang (CN)
Assigned to Zhejiang Zuojian Industry and Trade Co., Ltd., Jinhua (CN)
Filed by Zhejiang Zuojian Industry and Trade Co., Ltd., Jinhua (CN)
Filed on Nov. 25, 2024, as Appl. No. 18/957,948.
Claims priority of application No. 202422787609.X (CN), filed on Nov. 15, 2024.
Int. Cl. A63B 21/072 (2006.01); A63B 21/075 (2006.01)
CPC A63B 21/0726 (2013.01) [A63B 21/075 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A dumbbell with multiple gears of weight adjustment, comprising a dumbbell body, dumbbell pieces provided at two ends of the dumbbell body, and two adjustment mechanisms respectively provided at the two ends of the dumbbell body;
the dumbbell body comprises a grip rod, a center rod, and two sets of shell components respectively provided on two sides of the grip rod;
the center rod is rotatably provided at a center position of the grip rod;
each of the shell components comprises a main body shell and a plurality of connection disks;
the main body shell is rotatably connected to the grip rod and fixed to the center rod;
the plurality of connection disks are fixedly provided on the center rod and uniformly distributed along a central length direction;
each of the two adjustment mechanisms comprises an adjustment component, and the adjustment component comprises a plurality of adjustment blocks;
each dumbbell piece is provided with a first dumbbell hole that penetrates through the dumbbell piece, and each adjustment block respectively passes through and is slidably fitted with the first dumbbell hole;
each connection disk is provided with a second dumbbell hole, and each first dumbbell hole is respectively communicated with each second dumbbell hole;
when each dumbbell piece is provided on the dumbbell body, each adjustment block passes through the first dumbbell hole and is fixedly clamped to the second dumbbell hole.