Patent ID: 8853913

Claim:
A motor stator comprising: a) a stator core comprising a stator yoke, a plurality of stator teeth, and a plurality of stator slots each extending from the inner wall of the stator yoke, each of the plurality of stator slots having a back surface, a side surface, a front surface, and an opening; b) an upper end insulator comprising a first outer ring and a plurality of tooth block segments each extending from the inner wall of the first outer ring; c) a lower end insulator comprising a second outer ring and a plurality of tooth block segments each extending from the inner wall of the second outer ring; d) a slot paper comprising a paper back, a paper side, and a paper front; and e) a first lug boss; f) a second lug boss; g) a first clip slot; and h) a second clip slot; wherein: the upper end insulator and the lower end insulator are mounted on two end surfaces of the stator core, respectively; the back surface is disposed on the stator yoke, the front surface is disposed opposite to the back surface and is disposed on the front end of one of the plurality of stator teeth which is disposed away from the stator yoke, the side surface connects between the front surface and the back surface, and the opening is disposed on the front surface; the slot paper is formed in a cylindrical shape and is embedded in one of the plurality of the stator slots; the paper back is in contact with the back surface, the paper side is in contact with the side surface, and the paper front is in contact with the front surface; the first outer ring and the second outer ring are arranged on two end surfaces of the stator yoke, respectively; each of the plurality of the tooth block segments is attached to one end surface of one of the plurality of the stator teeth; the first lug boss is disposed between two adjacent tooth block segments and protruding from the inner wall of the first outer ring; the second lug boss is disposed between two adjacent tooth block segments and protruding from the inner wall of the second outer ring; the first clip slot is disposed in a first portion of one of the plurality of the tooth block segments of the upper end insulator, and the first portion is disposed beside the opening; the second clip slot is disposed in a second portion of one of the plurality of the tooth block segments of the lower end insulator, and the second portion is disposed beside the opening; one end of the paper back extending out of the stator slot is blocked by the first lug boss and the other end of the paper back extending out of the stator slot is blocked by the second lug boss; and one end of the paper front extending out of the stator slot is inserted in the first clip slot and the other end of the paper front extending out of the stator slot is inserted in the second clip slot.