Adjustable dumbbell and production method thereof

Abstract

Provided are a flow filling adjustable dumbbell and a production method thereof. The adjustable dumbbell includes a handle structure and two counterweight structures respectively arranged at two ends of the handle structure. The counterweight structure includes multiple detachable counterweight units. The counterweight units includes a counterweight plate. The counterweight plate is provided with a closed chamber inside. The enclosed chamber is filled with flowable filling material. The present disclosure uses a thin-walled accommodation housing structure formed by blow molding to carry low-cost flowable filling materials such as iron sand, obtaining a low-cost counterweight plate. The low-cost counterweight plate is then used for modular design of dumbbells. Multiple counterweight units based on flowable filling materials can be disassembled and stacked along an axial direction, allowing the weight of dumbbells to flexibly switch between multiple preset gears. Without relying on complex mechanical adjustment mechanisms, rapid weight adjustment is achieved.

Dependencies are inferred from the claim text.