Patent ID: 11879540
Assignee: KIA CORPORATION
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F  B | IPC F

Claim 0:
1. A lubrication structure of a planetary gear set, the lubrication structure comprising:
a hollow shaft on which the planetary gear set is disposed and forming an oil passage in an axial direction thereof, wherein the hollow shaft includes a plurality of oil holes in a radial direction thereof to supply a lubrication oil to the planetary gear set therethrough; and
an internal pipe provided within the oil passage of the hollow shaft, wherein a gap chamber is formed between the internal pipe and the hollow shaft with a preset gap,
wherein a plurality of oil supply holes are formed through the internal pipe in the radial direction to fluidically communicate the gap chamber and an internal space of the internal pipe,
wherein the internal pipe and the hollow shaft are fastened to each other to integrally rotate, and
wherein the internal pipe includes a through hole at an axial end portion of the internal pipe, and is fastened to a fastening hole of the hollow shaft, by a bolt which is provided to penetrate the trough hole and is engaged with the fastening hole.