Multistage variable-rigidity bushing

The utility model relates to a multistage variable rigidity bushing, which relates to the field of damping devices, and comprises a cylindrical elastic body, an inner support ring and an outer support ring, the middle of the elastic body is provided with an axial through central hole, the inner support ring is fixed on the inner side wall of the central hole, and the outer support ring is fixed on the outer side wall of the elastic body. A plurality of axial through linear control holes are formed in one side of the elastic body and are arranged at intervals in the radial direction of the elastic body. The bushing has the advantages that the inner supporting ring and the outer supporting ring support the elastic body, and the bushing can be conveniently connected with an external structure. Along with the increase of vibration, the deformation of the multiple linear control holes provides multiple linear segment rigidities, so that the vibration damper can meet the requirements of various road surfaces and ad