Hydraulic damper having a pressure tube and a ring
A ring circumscribing a moveable rod of a hydraulic damper. The movable rod defining an axis. The ring comprising a first wall, a second wall, an inner wall, an outer wall and a fluid passage. The fluid passage comprising a first channel extending radially along the second wall from the inner wall, with respect to the axis The fluid passage further comprising a second channel.
1 . A ring circumscribing a moveable rod of a hydraulic damper, the moveable rod defining an axis, the ring comprising:
a first wall;
a second wall, axially spaced from the first wall, with respect to the axis;
an inner wall extending circumferentially about the axis and confronting the moveable rod and extending between the first wall and the second wall;
an outer wall extending circumferentially about the axis, the outer wall circumscribing the inner wall and extending between the first wall and the second wall; and
a fluid passage comprising:
a first channel extending radially along the second wall and from the inner wall, with respect to the axis; and
a second channel at least partially overlapping a portion of the first channel and extending axially along a portion of the outer wall and from the second wall, with respect to the axis;
wherein the second channel includes a cross-sectional area when viewed along a vertical plane extending along the axis and intersecting the second channel, the cross-sectional area including a first linear portion, a second linear portion separate from the first linear portion, and a radiused portion provided between and interconnecting the first linear portion and the second linear portion.
2 . The ring of claim 1 , wherein the second channel includes a cross-sectional area when viewed along a horizontal plane perpendicular to the axis and intersecting the second channel, with the cross-sectional area being one of a rectangular cross-sectional area or scalloped cross-sectional area.
3 . The ring of claim 2 , wherein the cross-sectional area is a scalloped cross-sectional area and includes a curved portion extending continuously across a circumferential extend of the second channel.
4 . The ring of claim 1 , wherein the first linear portion extends axially from the first channel, with respect to axis, and the second channel extends radially from the outer wall, with respect to the axis.
5 . The ring of claim 1 , wherein the first channel extends a first circumferential distance and a first radial distance and the second channel extends a second circumferential distance, larger than the first circumferential distance, and a second radial distance, with respect to the axis.
6 . The ring of claim 5 , wherein the first radial distance is larger than the second radial distance.
7 . A ring circumscribing a moveable rod of a hydraulic damper, the moveable rod defining an axis, the ring comprising:
a first wall;
a second wall, axially spaced from the first wall, with respect to the axis;
an inner wall extending circumferentially about the axis and confronting the moveable rod and extending between the first wall and the second wall;
an outer wall extending circumferentially about the axis, the outer wall circumscribing the inner wall and extending between the first wall and the second wall;
a fluid passage comprising:
a first channel extending radially along the second wall and from the inner wall, with respect to the axis; and
a second channel at least partially overlapping a portion of the first channel and extending axially along a portion of the outer wall and from the second wall, with respect to the axis; and
a notch extending axially through a portion of the outer wall and being directly fluidly coupled to the second channel.
8 . The ring of claim 7 , wherein:
the first channel extends a first circumferential distance and a first radial distance, with respect to the axis; and
the second channel extends a second circumferential distance and a second radial distance, with respect to the axis; and
the fluid passage further comprises the notch that extends a third circumferential distance and a second third radial distance, with respect to the axis.
9 . The ring of claim 8 , wherein the second circumferential distance is larger than the first circumferential distance and the third circumferential distance.
10 . The ring of claim 8 , wherein the first circumferential distance is larger than the third circumferential distance.
11 . The ring of claim 8 , wherein the first circumferential distance is smaller than the third circumferential distance.
12 . The ring of claim 8 , wherein the second radial distance and the third radial distance are each smaller than the first radial distance.
13 . The ring of claim 12 , wherein the third radial distance is smaller than the second radial distance.
14 . The ring of claim 12 , wherein the third radial distance is equal to the second radial distance.
15 . The hydraulic damper of claim 7 , wherein the second channel includes a cross-sectional area when viewed along a horizontal plane perpendicular to the axis and intersecting the second channel, with the cross-sectional area being one of a rectangular cross-sectional area or a scalloped cross-sectional area.
16 . The hydraulic damper of claim 15 , wherein the cross-sectional area is a scalloped cross-sectional area and includes a curved portion extending continuously across a circumferential extend of the second channel.
17 . A ring circumscribing a moveable rod of a hydraulic damper, the moveable rod defining an axis, the ring comprising:
a first wall;
a second wall, axially spaced from the first wall, with respect to the axis;
an inner wall extending circumferentially about the axis and confronting the moveable rod and extending between the first wall and the second wall;
an outer wall extending circumferentially about the axis, the outer wall circumscribing the inner wall and extending between the first wall and the second wall; and
a fluid passage comprising:
a first channel extending radially along the second wall and from the inner wall, with respect to the axis; and
a second channel at least partially overlapping a portion of the first channel and extending axially along a portion of the outer wall and from the second wall, with respect to the axis,
wherein the second channel extends between the second wall and a point axially prior the first wall, with respect to the axis.
18 . The ring of claim 17 , wherein the second channel includes a cross-sectional area when viewed along a horizontal plane perpendicular to the axis and intersecting the second channel, with the cross-sectional area being one of a rectangular cross-sectional area or a scalloped cross-sectional area.
19 . The ring of claim 18 , wherein the cross-sectional area is a scalloped cross-sectional area and includes a curved portion extending continuously across a circumferential extend of the second channel.
20 . The ring of claim 17 , wherein:
the first channel extends a first circumferential distance and a first radial distance, with respect to the axis;
the second channel extends a second circumferential distance and a second radial distance, with respect to the axis; and
the second circumferential distance is larger than the first circumferential distance and the first radial distance is larger than the second radial distance.