Moving body

A moving body comprising:

• a body;
• a wheel coupled to the body and configured to rotate relative to the body;
• an auxiliary wheel connected to the body and configured to move upwards and downwards relative to the body;
• and
• a connector that connects the body and the auxiliary wheel to each other,
• wherein at least a portion of the auxiliary wheel is configured to protrude downward relative to the wheel based on the auxiliary wheel moving to a lowermost side relative to the body,
• wherein the connector comprises:
• a rotary shaft that extends in a left-right direction,
• an auxiliary wheel motor configured to rotate the rotary shaft,
• a first rotary member coupled to the rotary shaft and configured to rotate about the rotary shaft based on rotation of the rotary shaft, and
• a connection member that extends in an up-down direction and is connected to the auxiliary wheel, the connection member being configured to move upwards and downwards relative to the body based on rotation of the first rotary member about the rotary shaft,
• wherein the rotary shaft faces the connection member in a forward direction or a rearward direction, wherein one of the forward direction or the rearward direction defines a reference direction, and
• wherein the body has a contact part configured to contact a side surface of the first rotary member in the reference direction to thereby limit rotation of the first rotary member in the reference direction based on the auxiliary wheel moving to the lowermost side.