Sliding parts
AssigneeEagle Industry Co., Ltd.
InventorTadatsugu Imura
Life of this patent
Estimating the term…
Abstract
In sliding parts which is disposed at a relative rotational location of a rotating machine, and in which a first dynamic pressure generation groove extending so as to be inclined with respect to a relative rotation direction and a second dynamic pressure generation groove extending so as to be inclined in a direction opposite to the inclination direction of the first dynamic pressure generation groove with respect to the relative rotation direction in a plan view are provided on a sliding surface, bottom surfaces of the first dynamic pressure generation groove and the second dynamic pressure generation groove are inclined in the same direction with respect to a radial direction in a cross-sectional view.
Claims16
Sliding parts which are formed in an annular shape and disposed at a relative rotational location of a rotating machine, comprising a first sliding component having a first sliding surface and a second sliding component having a second sliding surface relatively slidable with the first sliding surface, the first sliding surface or the second sliding surface being provided with a first dynamic pressure generation groove extending so as to be inclined with respect to a relative rotation direction in a plan view, the first sliding surface or the second sliding surface being provided with a second dynamic pressure generation groove extending so as to be inclined in a direction opposite to an inclination direction of the first dynamic pressure generation groove with respect to the relative rotation direction in the plan view,
- wherein one of an outer diameter side and an inner diameter side of the sliding parts is a first radial side, and remaining one of the outer diameter side and the inner diameter side of the sliding parts is a second radial side,
- wherein the first dynamic pressure generation groove has a bottom surface which becomes shallower from the first radial side toward the second radial side throughout all the bottom surface of the first dynamic pressure generation groove,
- wherein the second dynamic pressure generation groove has a bottom surface which becomes shallower from the first radial side toward the second radial side throughout all the bottom surface of the second dynamic pressure generation groove,
- wherein the first dynamic pressure generation groove and the second dynamic pressure generation groove are disposed to be shifted from each other in a radial direction,
- wherein the first dynamic pressure generation groove has a deep groove portion on an upstream side of the relative rotation direction and a shallow groove portion on a downstream side of the relative rotation direction, and
- wherein the second dynamic pressure generation groove has a shallow groove portion on the upstream side of the relative rotation direction and a deep groove portion on the downstream side of the relative rotation direction.
Sliding parts which are formed in an annular shape and disposed at a relative rotational location of a rotating machine, comprising a first sliding component having a first sliding surface and a second sliding component having a second sliding surface relatively slidable with the first sliding surface, the first sliding surface or the second sliding surface being provided with a first dynamic pressure generation groove extending so as to be inclined with respect to a relative rotation direction in a plan view, the first sliding surface or the second sliding surface being provided with a second dynamic pressure generation groove extending so as to be inclined in a direction opposite to an inclination direction of the first dynamic pressure generation groove with respect to the relative rotation direction in the plan view,
- wherein one of an outer diameter side and an inner diameter side of the sliding parts is a first radial side, and remaining one of the outer diameter side and the inner diameter side of the sliding parts is a second radial side,
- wherein the first dynamic pressure generation groove has a bottom surface which becomes shallower from the first radial side toward the second radial side throughout all the bottom surface of the first dynamic pressure generation groove,
- wherein the second dynamic pressure generation groove has a bottom surface which becomes shallower from the first radial side toward the second radial side throughout all the bottom surface of the second dynamic pressure generation groove,
- wherein the first dynamic pressure generation groove and the second dynamic pressure generation groove are disposed to be shifted from each other in a radial direction,
- wherein the first dynamic pressure generation groove has a shallow groove portion on an upstream side of the relative rotation direction and a deep groove portion on a downstream side of the relative rotation direction, and
- wherein the second dynamic pressure generation groove has a deep groove portion on the upstream side of the relative rotation direction and a shallow groove portion on the downstream side of the relative rotation direction.
Dependencies are inferred from the claim text.