| CPC A63B 21/0726 (2013.01) [A63B 21/0728 (2013.01); A63B 21/075 (2013.01)] | 11 Claims |
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1. An adjustable dumbbell, comprising:
a dumbbell plate fix seat, which is provided with a dumbbell plate fix groove on the dumbbell plate fix seat, a bottom of the dumbbell plate fix groove is provided with several locking pieces;
a grip, which is provided with a through hole, an interior of the through hole is provided with a connection mechanism, the connection mechanism comprises a lead screw and a moving rod slidably connected to the lead screw, the moving rod is provided with a second positioning hole, the moving rod is fixedly connected to a connection rod, the connection rod is provided with several first position holes, the grip is connected to the several dumbbell plates;
wherein each dumbbell plate comprises a shell and a weight stack arranged in the shell, the shell is provided with a positioning mechanism, the positioning mechanism is provided with a dumbbell plate connection hole, the positioning mechanism comprises a base and a cover plate, and a moving piece provided between the base and the cover plate; the base is provided with a third pin hole, and the moving piece is provided with a third pin above the third pin hole, an elastic member is provided between an upper of the moving piece and the base; the elastic member ensures that the moving piece is not subjected to an external force, and the third pin is located in the third pin hole; a conflict block is provided below the moving piece, the conflict block is connected to an outside through a lower of the base.
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