LUBRICATING OIL SUPPLY STRUCTURE

摘要

A housing supporting a rotational shaft and accommodating an axial piston member is provided with an oil reservoir space that faces at least one of the two end faces in the axial direction of the rotational shaft. The rotational shaft is provided with a rotational-shaft-side supply oil passage that includes an axial hole open to the oil reservoir space and an axial-piston-member lubricating oil hole having one end fluidly connected to the axial hole and the other end open to a portion of the external surface of the first rotational shaft that faces the axial piston member.

主权项

1. A lubricating oil supply structure applicable to an axial piston device including a rotational shaft, an axial piston member supported by the rotational shaft in a relatively non-rotatable manner with respect thereto and a housing accommodating the axial piston member wherein the rotational shaft supports the axial piston device at a central part in an axial direction and is supported at one end side and the other end side in the axial direction by first-end-side and second-end-side bearing holes formed in the housing in a rotatable manner around the axis line, the lubricating oil supply structure comprising,
an oil reservoir space formed in the housing so as to be capable of receiving oil from an oil source and face at least one of the two end faces in the axial direction of the rotational shaft, and a rotational-shaft-side supply oil passage that is formed in the rotational shaft, wherein the rotational-shaft-side supply oil passage has an axial hole open to an end face of the rotational shaft that faces the oil reservoir space among the two end faces in the axial direction of the rotational shaft and an axial-piston-member lubricating oil hole having one end fluidly connected to the axial hole and the other end open to a portion of the external surface of the first rotational shaft that faces the axial piston member.