Key and buckling claw structure thereof

The invention provides a key and a buckling claw structure thereof. The buckling claw structure comprises a first claw arm and a second claw arm which are respectively formed by protruding from a supporting surface of the key and are separated and opposite to each other to form an opening for installing a supporting piece of the key, wherein the first claw arm, the second claw arm and the supporting surface are respectively provided with a first clamping surface, a second clamping surface and a third clamping surface which are independent of one another and are not connected with one another,and jointly define a clamping space for clamping a supporting piece extending along the penetrating direction, at least one groove is formed between the first clamping surface and the third clamping surface and between the second clamping surface and the third clamping surface respectively, and the distance between the two grooves is larger than that between the first clamping surface and the second clamping surface. The