| 摘要 |
The present invention relates to a pump and the manufacturing method thereof, the pump has an axle, rotors, stators, a motor frame prepared from resin, a first shell and a second shell. The first shell includes a cylinder part and a plate part and is located on the front of the motor frame. At least part of the rotors is accommodated on the front of the first shell. At least part of the stators are covered by the motor frame. The motor frame has a front end part and a rear end part which extend along the plate part, and a contact surface contacted with the first shell. Viewed from the axial direction, the contact surface has a ring shape to surround exhaust holes. Moreover, the motor frame has at least one exhaust hole connecting the front end part and the rear end part as well as extending along toughly axial direction. Therefore, gas stored between the plate part of the first shell and the motor frame is exhausted from the exhaust holes. Thus, the deformation of the first shell can be restrained. |
