Robot

A robot comprising:

• a body having a set volume;
• and
• traveling members provided at left and right regions of the body, respectively, and rotatably connected to the body by rotating shafts;
• a driving shaft positioned inside the body so that a longitudinal direction of the driving shaft is directed to a front-rear direction of the body;
• and
• a driving member providing power for rotating the driving shaft,
• wherein the rotating shafts are positioned to be vertically inclined at a rotating shaft inclination such that the rotating shafts are gradually directed outward from a top to a bottom thereof,
• wherein the driving shaft comprises:
• a first driving shaft positioned at a left region inside the body;
• and
• a second driving shaft positioned at a right region inside the body,
• wherein the first driving shaft and the second driving shaft are connected to a plurality of rotating shafts spaced apart from each other in the front-rear direction to rotate the rotating shafts according to rotation thereof,
• wherein the robot further comprises a power transmission portion configured to transmit the power of the driving member to the first driving shaft and the second driving shaft, the power transmission portion comprising:
• a driving gear connected to the driving member;
• a first driven gear connected to the first driving shaft;
• and
• a second driven gear connected to the second driving shaft, and
• wherein the robot further comprises switching gears positioned between the driving gear and the first driven gear or between the driving gear and the second driven gear such that a number of switching gears positioned between the driving gear and the first driven gear is different from a number of switching gears positioned between the driving gear and the second driven gear.