Oil pump having housing with seal portion
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United States of America Patent
Stats
-
Dec 6, 2022
Grant Date -
Jun 3, 2021
app pub date -
Nov 25, 2020
filing date -
Nov 29, 2019
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A pump housing of an oil pump includes a suction port that supplies oil to a pump room, a discharge port that discharges oil from the pump room, and a seal portion that suppresses leakage of oil from the pump room to outside of the pump room. A shaft of the oil pump includes a small diameter portion and a large diameter portion having different diameters, the small diameter portion is connected to the inner rotor, and the shaft and the inner rotor integrally rotate. The seal portion is in contact with a side surface of the inner rotor extending in a diameter direction of the shaft, and also extends to a region in the diameter direction on an inner side smaller than the large diameter portion in the diameter direction.
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