Tangential motor, tangential motor rotor and rotor core of tangential motor rotor

A rotor core, comprising a rotor body (1) and magnetic steel grooves (2) provided on the rotor body (1), wherein an even amount of magnetic isolation holes (11) are provided in a rotor magnetic pole between every two adjacent magnetic steel grooves (2), and the even amount of magnetic isolation holes (11) are symmetrically provided at two sides of a magnetic pole center line of the rotor magnetic pole;

• a width of each of the magnetic isolation holes (11) increases from a circle center of the rotor body (1) to an outer side of the rotor body (1), and outer side hole surfaces, closer to the outer side of the rotor body (1) than the circle center of the rotor body (1), of each of the magnetic isolation holes (11) are arc-shaped surfaces which are concentrically arranged with the rotor body (1);
• and
• a second magnetic isolation bridge (15) is formed between the each of the magnetic isolation holes (11) and a corresponding magnetic steel groove (2), and a width of an outer side of the second magnetic isolation bridge (15) is greater than a width of an inner side of the second magnetic isolation bridge (15).