Robot cleaner

A robot cleaner comprising:

• a cleaner body;
• a motor, configured to be fixed to the cleaner body, and provide a rotational force;
• a gear unit configured to transmit the rotational force of the motor;
• a wheel configured to rotate and drive the cleaner body according to the rotational force of the motor transmitted by the gear unit to the wheel;
• and
• a suspension comprising:
• a first end portion pivotally supportable on a pivot of the cleaner body, which is spaced apart from a rotary shaft of the motor, and
• a second end portion to extend from the first end portion and support the wheel to be moveable relative to the cleaner body while the motor is fixed to the cleaner body whereby the wheel moves up with respect to the cleaner body as the second end portion moves in a first direction around the pivot of the cleaner body and the wheel moves down with respect to the cleaner body as the second end portion moves in a second direction around the pivot of the cleaner body,
• wherein an axis of the pivot of the cleaner body is horizontally located between the rotary shaft of the motor supported on the cleaner body and a lower end of the cleaner body, and closer to the lower end of the cleaner body than the rotary shaft.