| 主权项 |
1. A propulsion apparatus for underwater driving, comprising:
a driving unit housing having a motor embedded therein; a propulsion unit housing connected to the driving unit housing, having a plurality of inlet holes formed therein in a radius direction, and comprising a propeller and a driving shaft for rotating the propeller; a motor supplying power to the driving shaft and comprising:
a stator having a coil wound on a core; anda rotator having a permanent magnet, wherein one end of the driving shaft is integrally fixed to the rotator through a center of the rotator; a separation diaphragm separating the rotator and the stator; a diaphragm bracket supporting the separation diaphragm fixed thereto, and being fixed to the driving unit housing so that an air gap is provided between the separation diaphragm and the rotator; and wherein the end of the driving shaft remains spaced apart from the separation diaphragm, and part of one side of the rotator is concaved so that a space S is formed between the separation diaphragm, the driving shaft, and the rotator. |
