Electric power steering apparatus

An electric power steering apparatus comprising a worm that is rotated by a steering assisting electric motor, bearing means for supporting said worm, and a worm wheel which meshes with said worm and is connected to a steering mechanism, for assisting steering by the rotation of said electric motor, wherein said bearing means comprises:

• a rolling bearing with an inner ring into which a shaft portion on one end side of said worm is inserted, for supporting said worm rotatably;
• a first resilient member disposed in contact with an inner circumference of said inner ring of said rolling bearing, and capable being extended in a axial direction of said worm by a force applied to said worm in the axial direction;
• and
• two second resilient members for restraining a movement of said worm in the axial direction, said second resilient members being held on said worm or said inner ring so as to be in contact with both ends of said inner ring of said rolling bearing.