A pole base assembly driving device for a tape recorder is disclosed. Manufacturing of decks becomes simpler and at lower cost. The pole base assembly driving device has a loading gear rotatably disposed on the deck, and rotated by a driving force which is transmitted from a driving source installed on the deck. The pole base assembly further comprises an elastic rod connected by one end to the loading gear, and connected by the other end to a link member which is connected with the pole base assembly. The elastic rod is preferably made of a material which is elastically bendable by an external force, and preferably comprises a deformation restricting means for restricting a deformation of the elastic rod when the elastic rod is deformed by the rotation of the loading gear, such as protrusions on the concave side of the rod when deformed and a reinforcement member. As a result, the number of parts and manufacturing cost is reduced, and deterioration of durability due to breakage of parts can be avoided.