Abstract: The present application discloses a blade mechanism and an electric scissors having the blade mechanism. The blade mechanism includes a setting blade, a moving blade, and a rotating shaft assembly. The rotating shaft assembly respectively passes through the setting blade and the moving blade to allow the setting blade and the moving blade being rotatablely connected. The cutting edge of the moving blade is automatically ground when the moving blade frictionally rotates relative to the setting blade. According to the present application, the moving blade and the setting blade of the blade mechanism open or close to generate friction, allowing the cutting edge of the moving blade to be automatically ground by the setting blade, thus the durability of the moving blade is improved.

Abstract: The present application discloses a dumbbell. The dumbbell includes: a hand-hold assembly, having a first channel and two opposite ends; two weight adjusting assemblies, rotatably connected with two ends of the hand-hold assembly respectively and rotated relative to the hand-hold assembly about a rotation axis; a plurality of weights, supported by the weight adjusting assembly; wherein, each weight adjusting assembly comprises a first cover connected with the end of the hand-hold assembly, a supporting base fixed to the first cover and having an upper sub-base and a lower sub-base spaced apart from the upper sub-base for forming a receiving space, and an engaging tube extending from the first channel into the receiving space and moved toward or away from the hand-hold assembly so that the engaging tube locks the weights or unlocks the weights.