Shaft current double-protection insulation structure of variable frequency motor

The utility model relates to a variable frequency motor shaft current dual-protection insulation structure, which comprises a first insulation unit arranged at a bearing sleeve and a second insulation unit arranged between a bearing and a motor shaft, and the insulating coating respectively extends to the inner cover position and the retainer ring position from the bearing to the two sides along the surface of the motor shaft. Compared with the prior art, the motor bearing has the advantages of effectively improving the shaft current insulation effect, prolonging the service life of the motor bearing and the like. 本实用新型涉及一种变频电机轴电流双重防护绝缘结构，包括设置轴承套处的第一绝缘单元，还包括设置于轴承与电机轴之间的第二绝缘单元，所述第二绝缘单元包括绝缘镀层，该绝缘镀层沿着电机轴表面从轴承处向两侧分别延伸至内盖位置和挡圈位置。与现有技术相比，本实用新型具有有效提升轴电流绝缘效果、延长电机轴承使用寿命等优点。