Rotor and speed reducer including the rotor

A rotor comprising:

• a shaft which extends along a central axis;
• a rotor core in a cylindrical shape which surrounds the shaft;
• a connector which is provided radially inside the rotor core and which connects the rotor core and the shaft;
• a plurality of magnets which are provided radially outside the rotor core and arranged along a circumferential direction;
• and
• a cover which is provided radially outside the magnets,
• wherein the connector comprises:
• a body in a cylindrical shape which surrounds the shaft;
• a flange which extends radially outward from one end in an axial direction of the body and facing the magnets in the axial direction;
• and
• a fixer extends radially inward from the radial inner surface of the body,
• wherein the cover comprises:
• a peripheral surface in a cylindrical shape which faces the magnets in a radial direction;
• and
• an eave which extends radially inward from an other end in the axial direction of the peripheral surface and which faces the magnets in the axial direction, and
• the fixer is thinner in the axial direction than the body.