Clamping mechanism

The utility model provides a clamping mechanism. The clamping mechanism comprises a base, a first clamping jaw, a second clamping jaw and an elastic piece. The first clamping jaw comprises a first clamping part, a first connecting part and a first holding part which are connected in sequence, and the first connecting part is rotationally connected to one side of the base. The second clamping jaw comprises a second clamping part, a second connecting part and a second holding part which are sequentially connected, the second connecting part is rotationally connected to the side, opposite to the first connecting part, of the base, and the second holding part intersects with the first holding part. The two ends of the elastic piece are connected with the non-intersection positions of the first holding part and the second holding part respectively. After the first holding part and the second holding part get close to each other under external force, the first clamping jaw and the second clamping jaw rotate, the el