Disclosed is a double insulated motor and pinion device, comprising: a motor (7), a motor fixing seat (6), a pinion (1), a pinion shaft sleeve (2) and a double insulated sleeve (3), wherein the motor (7) is connected to the motor fixing seat (6) to form a motor component and is mounted below the pinion (1), the double insulated sleeve (3) is connected below the pinion shaft sleeve (2), the pinion (1), the pinion shaft sleeve (2) and the double insulated sleeve (3) are mounted together to form a pinion component, and the pinion component is mounted on the motor component. By adding two insulated parts, the requirements for basic insulation and reinforced insulation of a high-voltage direct-current series of products are met, and at the same time the space is reduced and the costs are lowered.
