ELECTRIC PUMP

摘要

An electric pump is provided, which includes a housing, a shaft, a rotor assembly and a stop assembly. The shaft is fixed to the housing, the rotor assembly is rotatable about the shaft, and the rotor assembly is sleeved on the shaft. The stop assembly is configured to limit the position of the rotor assembly in the chamber. The stop assembly includes a first stop and a second stop, the first stop is fixed with respect to a second portion of the shaft, and the second stop is fixed with respect to a first portion of the shaft. No relative movement occurs between the stop assembly and the shaft, which reduces the abrasion between the stop assembly and the shaft resulted from friction, and facilitates improving a service life of the stop assembly.

主权项

1. An electric pump, comprising a housing, a shaft and a rotor assembly, a chamber being formed in the housing, and the rotor assembly being arranged in the chamber, wherein:
the shaft comprises a first portion and a second portion, the first portion is fixed to the housing, and the second portion is in non-direct contact with the housing; the rotor assembly is rotatable about the shaft, and the rotor assembly is sleeved on the shaft; the electric pump comprises a stop assembly, the stop assembly is configured to limit a position of the rotor assembly in the chamber and comprises a first stop and a second stop; and the first stop is configured to limit a position of the rotor assembly moving along the shaft in a direction away from the first portion, and the second stop is configured to limit a position of the rotor assembly moving along the shaft in a direction towards the first portion, the first stop is fixed to the second portion, and the second stop is fixed to the first portion.