A spherical joint comprises a socket, a ball stud, and a seal. The ball stud comprises a shaft, an inner ring positioned within an outer ring of the socket and within which the shaft is positioned, and a ring retainer attached to the shaft and retaining the inner ring to the shaft. The ring retainer
A spherical joint comprises a socket, a ball stud, and a seal. The ball stud comprises a shaft, an inner ring positioned within an outer ring of the socket and within which the shaft is positioned, and a ring retainer attached to the shaft and retaining the inner ring to the shaft. The ring retainer provides an axial end of the ball stud relative to the axis. The outer ring and the inner ring comprise respectively a first spherical surface and a second spherical surface. The first and second spherical surfaces spherically mate with one another. The seal establishes a sealed connection between the outer ring and the inner ring. The socket and the ring retainer cooperate to provide a motion limiter that limits relative movement between the socket and the ball stud so as to prevent contact between the ring retainer and the seal.
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1. A spherical joint, comprising a socket comprising an outer ring,a ball stud comprising a shaft, an inner ring within which the shaft is positioned, and a ring retainer attached to the shaft and retaining the inner ring to the shaft, the inner ring positioned within the outer ring, the ring retain
1. A spherical joint, comprising a socket comprising an outer ring,a ball stud comprising a shaft, an inner ring within which the shaft is positioned, and a ring retainer attached to the shaft and retaining the inner ring to the shaft, the inner ring positioned within the outer ring, the ring retainer providing an axial end of the ball stud relative to an axis of the shaft, the outer ring and the inner ring comprising respectively a first spherical surface and a second spherical surface, the first and second spherical surfaces spherically mating with one another;a mounting eye attached to a housing of the socket for securing a component, the outer ring being fitted within the mounting eye such that the outer ring is configured to be maintained between the secured component and the inner ring; anda seal establishing a sealed connection between the outer ring and the inner ring; anda hollow dome comprising a recessed portion, the recessed portion of the hollow dome being secured to the socket, wherein the hollow dome is open so as to cover the ring retainer to provide a motion limiter that limits relative movement between the socket and the ball stud, thereby preventing contact between the ring retainer and the seal. 2. The spherical joint of claim 1, wherein the component has a longitudinal axis, the axis of the shaft is a first axis, the longitudinal axis of the component is a second axis, and the motion limiter limits relative rotation between the socket and the ball stud about the second axis to prevent contact between the ring retainer and the seal. 3. The spherical joint of claim 1, wherein the component is a hydraulic cylinder. 4. The spherical joint of claim 2, wherein the motion limiter comprises a first barrier and a second barrier, the ring retainer and the first barrier are arranged to limit relative rotation between the socket and the ball stud about the second axis upon contact between the ring retainer and the first barrier, and the ring retainer and the second barrier are arranged to limit relative rotation between the socket and the ball stud about the second axis upon contact between the ring retainer and the second barrier. 5. The spherical joint of claim 4, wherein the hollow dome comprises a channel in which the ring retainer is positioned, and the first barrier is a first side wall of the channel, the second barrier is a second side wall of the channel, and the first and second side walls extend lengthwise of the channel. 6. The spherical joint of claim 2, wherein the motion limiter allows relative rotation between the socket and the ball stud about the first axis. 7. The spherical joint of claim 1, wherein the ring retainer and the socket mate with one another. 8. The spherical joint of claim 1, wherein the hollow dome comprises a channel included in the motion limiter and in which the ring retainer is positioned. 9. The spherical joint of claim 8, in combination with a fluid cylinder attached to the socket and having a longitudinal axis, wherein the axis of the shaft is a first axis, the longitudinal axis of the fluid cylinder is a second axis, the channel has a length and a width, the length is greater than the width, the channel extends along its length angularly relative to a third axis perpendicular to the first axis and the second axis and extends along its width angularly relative to the second axis. 10. The spherical joint of claim 8, wherein the outer ring is positioned within an aperture of the mounting eye, and a cover covers a first side of the aperture but not a second side of the aperture opposite to the first side and comprises the channel; the hollow dome being part of the cover. 11. The spherical joint of claim 8, in combination with a fluid cylinder attached to the socket and having a longitudinal axis, wherein the channel is longer than it is wide and has a centerline that extends lengthwise of the channel and is co-planar with the longitudinal axis of the fluid cylinder. 12. The spherical joint of claim 1, wherein the hollow dome comprises a channel included in the motion limiter, the ring retainer comprises an end cap and a fastener attaching axially the end cap to an end of the shaft relative to the axis of the shaft, and the end cap extends axially into the channel relative to the axis of the shaft. 13. The spherical joint of claim 12, wherein the end cap comprises a head and a flange, the head extends axially into the channel relative to the axis of the shaft, and the flange extends radially outwardly from the head relative to the axis of the shaft and contacts the inner ring axially relative to the axis of the shaft. 14. The spherical joint of claim 13, wherein the end cap comprises a shoulder extending radially inwardly from the head of the end cap relative to the axis of the shaft, the fastener comprises a head and a shank, the head of the fastener is positioned within a through-bore of the head of the end cap and axially against the shoulder relative to the axis of the shaft, and the shank extends axially relative to the axis of the shaft through a hole of the shoulder into the shaft. 15. The spherical joint of claim 13, wherein the head is an annular wall. 16. The spherical joint of claim 13, wherein the head comprises a convex portion external to the through-bore and configured to contact the channel. 17. The spherical joint of claim 1, wherein the socket comprises the mounting eye and the hollow dome, the outer ring is mounted to the mounting eye in an aperture of the mounting eye, the hollow dome is fastened to the mounting eye on a side of the aperture, and the hollow dome comprises a channel included in the motion limiter and in which the ring retainer is positioned. 18. The spherical joint of claim 1, wherein the component has a longitudinal axis, wherein the axis of the shaft is a first axis, the longitudinal axis of the component is a second axis, the socket comprises the mounting eye, a cover, and a convoluted boot, the mounting eye is attached to the component, the cover comprises the hollow dome and an annular flange surrounding the hollow dome and attached to a first side of the mounting eye, the boot is attached to the shaft and a second side of the mounting eye opposite to the first side, the hollow dome comprises a channel that is longer than it is wide and has a centerline that extends lengthwise of the channel and is co-planar with the second axis, the channel is included in the motion limiter, the ring retainer is positioned in the channel, and the spherical joint further comprises another seal establishing a sealed connection between the outer ring and the inner ring. 19. The spherical joint of claim 18, wherein the socket comprises first fasteners attaching the annular flange to the mounting eye and second fasteners attaching the boot to the second side of the mounting eye. 20. The spherical joint of claim 18, wherein the component is a hydraulic cylinder.
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이 특허에 인용된 특허 (12)
Bellamy John S. (Gwynedd GB7) Elliott Keith D. (Clwyd GB7), Ball joint.
Kjellstrand Gunnar M. T. (Framnsvgen 3 S-683 00 Hagfors SEX) Olofsson Olof (Hotellvgen 10 S-683 00 Hagfors SEX) Linder Anders G. (Bergsvgen 12 S-663 00 Skoghall SEX), Coupling of the ball-and-socket joint type.
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