US 12,364,897 B2
High-reliability adjustable dumbbell
Xun Zhang, Funing (CN)
Assigned to Xiwen Shen, Changzhou (CN)
Filed by Xiwen Shen, Changzhou (CN)
Filed on Nov. 5, 2024, as Appl. No. 18/938,077.
Claims priority of application No. 202421136561.X (CN), filed on May 23, 2024.
Prior Publication US 2025/0058164 A1, Feb. 20, 2025
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)] 10 Claims
OG exemplary drawing
 
1. A high-reliability adjustable dumbbell, comprising a base (1) for a placing dumbbell plates, dumbbell plates (2), a handle (3), and a plurality of chucks (34) mounted on a rod body (33), wherein the handle (3) rotates to drive the chucks (34) to rotate; the plurality of (34) are clamped with or staggered from the dumbbell plates (2); the high-reliability adjustable dumbbell further comprises self-locking modules (32) mounted on the rod body (33); each self-locking module (32) comprises a stopper plate (31), a first locking disk (322), a second locking disk (324), a shell (321), a locking block (326), a cover plate (329), and a fixed frame (327); the first locking disk (322) is fixed on an inner side of the stopper plate (31); the second locking disk (324) is clamped with the stopper plate (31); the first locking disk (322) and the second locking disk (324) are both provided with convex sheets (3221) spaced apart from each other; the fixed frame (327) is fixed on the cover plate (329); the cover plate (329) seals the fixed frame (327), the first locking disk (322), and the second locking disk (324) inside the shell (321); the locking block (326) is mounted in the fixed frame (327) through a reset spring (325); the stopper plate (31) is rotatably mounted on the shell (321) and is clamped with the handle (3); the base (1) is further provided with a convex block (12) and a locking plate (11); when the handle (3) rotates, the handle drives the stopper plate (31), the first locking disk (322), the second locking disk (324), and the convex sheets (3221) to rotate; the convex sheets (3221) of the first locking disk (322) are unlocked or locked by the locking plate (11); and the convex sheets (3221) of the second locking disk (324) are unlocked or locked by the locking block (326).