US 12,403,351 B1
Adjustable dumbbell
Ping Liu, Shanghai (CN)
Assigned to OHFG TECHNOLOGIES(SHANGHAI) CO., LTD, Shanghai (CN)
Filed by OHFG TECHNOLOGIES(SHANGHAI) CO., LTD, Shanghai (CN)
Filed on Mar. 13, 2024, as Appl. No. 18/603,680.
Claims priority of application No. 202410224398.0 (CN), filed on Feb. 28, 2024.
Int. Cl. A63B 21/075 (2006.01); A63B 21/072 (2006.01)
CPC A63B 21/075 (2013.01) [A63B 21/0726 (2013.01); A63B 21/0728 (2013.01); A63B 2209/08 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A novel adjustable dumbbell, comprising a handle and two counter weights,
wherein the two counter weights are respectively arranged at two ends of the handle, and each of the counter weights comprises: a dumbbell plate group, a positioning frame and a positioning pin;
wherein the dumbbell plate group comprises a plurality of dumbbell plate units which are clamped sequentially, and each of the dumbbell plate units is provided with a positioning hole penetrating through two sides;
wherein the positioning frame is sleeved outside the dumbbell plate group and is fixedly connected to the handle, and the positioning frame is provided with a plurality of mounting holes corresponding to the dumbbell plate units in the dumbbell plate group at intervals; and
wherein the positioning pin is inserted in any one of the mounting holes in the positioning frame and the positioning hole in the corresponding dumbbell plate unit, and locks the corresponding dumbbell plate unit and all dumbbell plate units located on an inner side of the corresponding dumbbell plate unit in the positioning frame, or locks the corresponding dumbbell plate unit and all dumbbell plate units located on an outer side of the corresponding dumbbell plate unit in the positioning frame.