Connection structure of motor cover and bearing

A connection structure of a motor cover and a bearing comprises an end cover (3) and the bearing (2), a bearing block (4) used for installing the bearing (2) is arranged in the middle part of the end cover (3), and the inner wall of the bearing block (4) is equipped with an inwards concave positioning groove (41) in which the bearing (2) can be embedded and positioned. A protruding column (21) is protruded radially on an outer ring of the bearing (2), and when the bearing (2) is embedded in the bearing block (4), the protruding column (4) can prevent the bearing (2) from moving relative to the bearing block (4) to be fastened in the positioning groove (41). The advantages of the utility model are that the inwards concave positioning groove is arranged on the inner wall of the bearing block of the motor end cover, the outer ring of the bearing is equipped with the protruding column matching the positioning groove, so that the bearing can be embedded in the bearing block stably, and accordingly the relative mov