Electric toothbrush head

An electric toothbrush head, comprising:

• a housing (1), wherein the housing (1) is provided with a mounting cavity (11) and a mounting hole (12) communicated with the mounting cavity (11);
• a transmission assembly (2), wherein the transmission assembly (2) is arranged in the mounting cavity (11), the transmission assembly (2) comprises a first transmission rod (21), a second transmission rod (22) and a third transmission rod (23), one end of a rotating shaft (24) passes through one end of the first transmission rod (21), one end of the second transmission rod (22) and one end of the third transmission rod (23), such that the first transmission rod (21), the second transmission rod (22) and the third transmission rod (23) are rotatably connected;
• and an other end of the third transmission rod (23) is hinged in the mounting cavity (11);
• and
• a cleaning head (3), wherein the cleaning head (3) is rotatably mounted in the mounting cavity (11) from the mounting hole (12), a bottom of the cleaning head (3) is eccentrically provided with a first rotating groove (331), and an other end of the second transmission rod (22) is arranged in the first rotating groove (331).