Motor
AssigneeLG Innotek Co., Ltd.
InventorSang Tae Kim
Life of this patent
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Abstract
The present invention can provide a motor including a first housing, a stator disposed in the first housing, a rotor disposed to correspond to the stator, a shaft coupled to the rotor, a second housing through which the shaft passes, and a pump gear disposed in the second housing, wherein the shaft includes a first region coupled to the pump gear, a second region coupled to the second housing, a third region coupled to the rotor, and a fourth region protruding from the rotor toward a bottom surface of the first housing, and an axial length of the fourth region is smaller than a minimum distance between a lower surface of the rotor and the bottom surface of the first housing.
Claims10
A motor, comprising:
- a first housing;
- a rotor disposed in the first housing;
- a shaft fixed to the rotor;
- a second housing which rotatably supports the shaft;
- and
- a pump gear fixed to the shaft, wherein the second housing includes:
- a first part in which a suction port and a discharge port are formed, the first part including a first groove;
- and
- a protrusion protruding toward the rotor, the protrusion including a hole into which the shaft is rotatably inserted and a second groove which is connected to the hole and through which a lubricant is introduced, wherein a bearing is not disposed between a bottom surface of the first housing and the rotor, and wherein the second groove is located inside of the hole and fluidly connected to the first groove.
Dependencies are inferred from the claim text.