Uniaxial eccentric screw pump

A uniaxial eccentric screw pump configured such that a rotor of an external screw type is inserted into a stator having an insertion hole of an internal screw type, the uniaxial eccentric screw pump comprising a rotor drive mechanism capable of revolving the rotor while rotating the rotor about its axis, the rotor drive mechanism comprising:

• a rotation power transmission member configured to rotate about a predetermined center axis, to thereby rotate the rotor about its axis;
• and
• a revolution track formation member configured to revolve a proximal shaft portion of the rotor along a predetermined revolution track while allowing rotation of the proximal shaft portion about its axis,
• the rotor drive mechanism being configured to actuate the rotation power transmission member and the revolution track formation member by distributing power output from the same power source in parallel and transmitting the power to the rotation power transmission member and the revolution track formation member while mechanically synchronizing the rotation power transmission member and the revolution track formation member, to thereby enable the rotor to be revolved while being rotated about its axis.