Suspension joint bearing
View Patent ↗An improved bearing for use in movable sockets and suspension joints. The improved bearing is annular, having an outer dimension sized to seat within the housing of a suspension joint or movable socket. An inner surface of the bearing is configured to receive the head of an articulating stud within the housing. Three or more radial slots are disposed on the inner surface. Each radial slot disposed on one-half of the bearing inner surface has a unique radial dimension, such that the radial slots are optimally configured to minimize stress and stiffness within the improved bearing, whereby the bearing can be seated within the housing in a radially and rotationally locked configuration, but remain movable in an axial direction.
1. A suspension joint for a vehicle comprising:
a ball joint stud having a convex semi-spherical stud head;
a housing for receiving said stud head for articulated movement therein, said housing having a central bore;
a bearing body defining a central axis and disposed between said housing and said stud head for establishing a sliding interface therebetween; said bearing body being nested in said central bore and a concave semi-spherical inner surface for directly engaging said stud head;
said bearing body including a discontinuity extending generally radially through said bearing body and axially along the entire length of said bearing body; and
said bearing body further including at least three radial slots extending radially outwardly from said inner surface to a termination point embedded within said bearing body, each of said radial slots having a distinct radial depth as measured from said central axis to said termination point, such that no more than two of said radial slots have an identical radial depth.
2. The suspension joint of claim 1 wherein said at least three radial slots consists of exactly five radial slots, a first one of said five radial slots disposed radially opposite from said discontinuity, and the remaining four of said five radial slots arcuately spaced 60° from at least one adjacent said radial slot.
3. The suspension joint of claim 2 wherein said first one of said five radial slots has a first radial depth that is shorter than the radial depth of each of said remaining four of said five radial slots.
4. The suspension joint of claim 2 wherein each of said radial slots proximate said fist one of said five radial slots has a radial depth that is shorter than the radial depth of each of said radial slots proximate said discontinuity.
5. The suspension joint of claim 1 wherein said bearing body is secured in said housing against radial movement.
6. The suspension joint of claim 1 wherein said bearing body is secured in said housing against rotational movement.
7. The suspension joint of claim 1 wherein said bearing body is movable in an axial direction within said housing.
8. The suspension joint of claim 1 wherein said at least three radial slots consists of exactly six radial slots.
9. The suspension joint of claim 8 wherein said six radial slots are arranged in three pairs consisting of two slots each, a first pair of said six radial slots each having an equivalent first radial depth, a second pair of said six radial slots each having an equivalent second radial depth that is different than said first radial depth, and a third pair of said six radial slots each having an equivalent third radial depth that is different than said first and second radial depths.
10. The suspension joint of claim 9 wherein said first radial depth is shorter than said second radial depth; and wherein said second radial depth is shorter than said third radial depth.
11. The suspension joint of claim 8 wherein an imaginary axial plane passing through said central axis and said discontinuity bisects said bearing body into first and second mirror image portions; and wherein said six radial slots are arranged in three pairs of two identical radial slots each, one of each pair of said two identical radial slots disposed in said first mirror image portion and the other of each pair of said two identical radial slots disposed in said second mirror image portion.
12. The suspension joint of claim 1 wherein said radial slots are symmetrically disposed relative to one another about said central axis of said bearing body.
13. The suspension joint of claim 1 wherein said bearing body has a generally annular exterior configuration, and wherein an imaginary axial plane passing through said central axis and said discontinuity bisects said annular bearing body into first and second mirror image portions.
14. The suspension joint of claim 1 wherein one of said at least three radial slots located proximate said discontinuity has a radial depth that is longer than the radial depth of another one of said at least three radial slots located distal from said discontinuity.
15. The suspension joint of claim 1 wherein each of said at least three radial slots includes an enlarged end portion adjacent said termination point and a reduced-width neck portion extending between said enlarged end portion and said inner surface, said reduced-width neck portion having a width less than a width of said enlarged end portion.
16. The suspension joint of claim 15 wherein each of said enlarged end portions has a circular cross section.
17. The suspension joint of claim 16 wherein each of said enlarged end portions is dimensionally identical to the other of said enlarged end portions.