Self-generating electricity mechanism utilizing rotation of tyre

The utility model discloses a self-generating mechanism utilizing rotation of a tyre. A plurality of sets of linear generators are arranged at the circumference of the top edge of the tyre; each set of linear generator comprises a paired stator and runner; the stator is positioned in a housing; the housing is fixedly mounted on a wheel rim; the stator is formed by winding a coil on a ring-shaped skeleton; the runner is composed of a columnar skeleton and a permanent magnet mounted on the skeleton or an excitation coil; the runner penetrates through the stator; and one end of the runner is contacted with the inner surface of a rubber tyre body all the time during the rotation of the tyre, and performs radial reciprocating movement in the stator under the guidance action of the stator along with the transformation of the rubber tyre body at the contact position. According to the self-generating mechanism, the runner is driven to perform reciprocating movement in the stator by means of the transformation of the