Elastic structure

The utility model discloses an elastic structure. The elastic structure comprises a sliding ring, at least one pair of elastic rings and at least one pair of positioning parts, the elastic rings and the positioning parts are arranged at intervals and fixedly connected to the surface of the sliding ring; the positioning part comprises a positioning head and a connecting rod, one end of the connecting rod is fixedly connected with the positioning head, and the other end is fixedly connected with the sliding ring; the connecting rod has deformation and recovery capacity in the radial direction of the sliding ring, so that the positioning head can be positioned when pressed by external force and automatically recover when the external force disappears. The transverse diameter of the elastic ring is larger than the vertical diameter, so that the elastic ring is in an oval shape to improve the toughness of the elastic ring, the elastic ring is bent in the circumferential direction of the sliding ring and matched wi