Self-locking plug-in stabilizer bar links

• US 6,076,840 A
• Filed: 05/19/1998
• Issued: 06/20/2000
• Est. Priority Date: 05/19/1998
• Status: Expired due to Term

• Current Assignee: American AXLE & Manufacturing Incorporated (American AXLE & Manufacturing Holdings Incorporated)
• Original Assignee: American AXLE & Manufacturing Incorporated (American AXLE & Manufacturing Holdings Incorporated)
• Inventors: Costello, Scott T., Harvey, Talon T., Kincaid, Jeffrey L.
• Primary Examiner(s): English, Peter C.
• Assistant Examiner(s): Jasmin, Lynda
• Application Number:
  US09/081,113
• Time in Patent Office: 763 Days
• Field of Search: 280/124.107, 280/124.137, 280/124.152, 280/93.511, 267/188, 403/122, 403/133, 403/135, 403/140, 411/55, 411/80.5, 411/80.6, 411/34, 411/60.1, 411/60.2, 411/57.1
• US Class Current: 280/124.107
• CPC Class Codes: B60G 21/0551 Mounting means therefor
• CPC Class Codes: B60G 2200/144 with two lateral arms forming a parallelogram
• CPC Class Codes: B60G 2202/12 Wound spring
• CPC Class Codes: B60G 2202/135 Stabiliser bar and/or tube
• CPC Class Codes: B60G 2202/24 Fluid damper
• CPC Class Codes: B60G 2204/1224 End mounts of stabiliser on wheel suspension
• CPC Class Codes: B60G 2204/41 Elastic mounts, e.g. bushings
• CPC Class Codes: B60G 2204/416 Ball or spherical joints
• CPC Class Codes: B60G 2204/422 Links for mounting suspension elements
• CPC Class Codes: B60G 2206/012 Hollow or tubular elements
• CPC Class Codes: B60G 2206/427 Stabiliser bars or tubes
• CPC Class Codes: B60G 7/005 Ball joints B60G7/006 takes precedence; for steering linkage B62D7/16; ball joints per se F16C11/06
• CPC Class Codes: F16C 11/0633 the linings being made of plastics
• CPC Class Codes: F16C 11/0695 Mounting of ball-joints, e.g. fixing them to a connecting rod
• CPC Class Codes: F16C 11/083 by means of parts of rubber or like materials
• CPC Class Codes: F16C 2326/05 Vehicle suspensions, e.g. bearings, pivots or connecting rods used therein in general B60G
• CPC Class Codes: F16F 1/3842 Method of assembly, production or treatment; Mounting thereof supports for pipes, cables or protective tubing F16L3/00
• CPC Class Codes: F16F 2236/045 the spring material being generally enclosed
• CPC Class Codes: Y10T 403/32631 Universal ball and socket

Abstract

The present invention provides a suspension assembly for a motor vehicle including a pair of end links which interconnect the opposite ends of a stabilizer bar to a pair of suspension members. Each end link has a first fastener adapted for connection to the end of the stabilizer bar and a second fastener adapted for connection to the suspension member. In addition, a locking mechanism is provided for securing the first fastener in a socket formed in the hollow end of the stabilizer bar.

Claims

1. An anti-roll system for a vehicular suspension comprising:

a stabilizer bar having a hollow end;

an end link having a housing and a shank extending from said housing; and

a locking mechanism mounted in said hollow end of said stabilizer bar and adapted to engage said shank for securing said end link to said stabilizer bar.

2. The anti-roll system of claim 1 wherein said hollow end of said stabilizer bar is a non-threaded socket formed in the terminal end thereof, and said shank has external threads formed thereon, and wherein said locking mechanism includes an adapter disposed in said socket which has an internally threaded bore, whereby tightening of said threaded shank into said threaded bore of said adapter causes said locking mechanism to radially expand and be secured within said socket.

3. The anti-roll system of claim 2 wherein said stabilizer bar is a tubular component with said socket defined by an end thereof.

4. The anti-roll system of claim 2 wherein said adapter is a locking sleeve having an outer wall surface which mates with an inner wall surface of said socket, whereby threaded tightening of said threaded shank into said threaded bore in said locking sleeve causes radial expansion of said locking sleeve which causes said outer wall surface of said locking sleeve to be forced against said inner wall surface of said socket.

5. The anti-roll system of claim 4 wherein said locking sleeve is an elongated split ring component having an expansion slot.

6. The anti-roll system of claim 2 wherein said locking mechanism further includes a bushing having an outer wall surface which mates with an inner wall surface of said socket, and a throughbore extending between its opposite end walls, and wherein said adapter is a capture nut which is non-rotatably positioned adjacent to one end wall of said bushing and which has its internally threaded bore aligned with said throughbore, whereby said threaded shank extends through said bushing throughbore such that tightening of said threaded shank into said threaded bore in said capture nut causes axial compression and radial expansion of said bushing for forcibly urging said outer wall surface of said bushing against said inner wall surface of said socket.

7. The anti-roll system of claim 6 further comprising a radial disc positioned against the opposite end wall of said bushing and which engages a terminal end surface of said stabilizer bar adjacent to said socket.

8. The anti-roll system of claim 6 wherein said capture nut includes a radial flange segment which is positioned adjacent to said one end wall of said bushing and a hub segment non-rotatably retained in a retention cavity formed in said bushing.

9. The anti-roll system of claim 2 wherein said locking mechanism further includes a lock sleeve having an outer wall surface which mates with an inner wall surface of said socket, said lock sleeve further including a tapered bore through which said threaded shank is adapted to extend, and wherein said adapter is a wedge nut disposed in said tapered bore in said lock sleeve and has a tapered outer surface which mates with an inner wall surface of said tapered bore, whereby said threaded shank extends through said tapered bore in said lock sleeve such that tightening of said threaded shank into said threaded bore in said wedge nut causes axial movement of said wedge nut relative to said lock sleeve which causes radial expansion of said lock sleeve for forcibly urging said outer wall surface of said lock sleeve against said inner wall surface of said socket.

10. The anti-roll system of claim 9 wherein said outer wall surface of said lock sleeve is tapered to mate with a tapered inner wall surface of said socket.

11. The anti-roll system of claim 9 wherein said lock sleeve is an elongated split-ring component having an expansion slot.

12. The anti-roll system of claim 2 wherein said threaded shank extends from a ball stud having a ball segment retained in a spherical socket mounted in said housing of said end link.

13. The anti-roll system of claim 2 wherein said threaded shank is formed on a bolt extending through a grommet retained in said housing of said end link.

14. An end link adapted for plug-in connection into the hollow end of a stabilizer bar, comprising:

a housing;

a fastener having an externally-threaded shank segment extending from said housing; and

a locking sleeve adapted to be disposed in the hollow end of the stabilizer bar and having an internally-threaded bore, whereby tightening of said threaded shank segment into said threaded bore causes radial expansion of said locking sleeve such that its outer wall surface is forcibly urged into engagement with the inner wall surface of the hollow end of the stabilizer bar.

15. The end link of claim 14 wherein said locking sleeve is an elongated split ring having an expansion slot for permitting radial expansion of said outer wall surface of said locking sleeve in response to tightening of said threaded shank segment into said threaded bore.

16. The end link of claim 14 wherein said threaded bore in said locking sleeve is tapered.

17. An end link adapted for plug-in connection into the hollow end of a stabilizer bar, comprising:

a housing;

a fastener having an externally-threaded shank segment extending from said housing;

a bushing adapted to be disposed in the hollow end of the stabilizer bar and having a throughbore; and

a capture nut acting on said bushing and having an internally-threaded bore, whereby tightening of said threaded shank into said threaded bore in said capture nut causes said capture nut to move axially relative to said shank segment thereby axially compressing and radially expanding said bushing such that an outer wall surface of said bushing is urged into engagement with the inner wall surface of the hollow end of the stabilizer bar.

18. The end link of claim 17 wherein said capture nut includes a hub segment non-rotatably mounted in a retention cavity formed in said bushing and a radial flange segment acting against an end wall of said bushing.

19. The end link of claim 17 wherein said inner wall surface of said hollow end of said stabilizer bar defines an enlarged cavity.

20. An end link adapted for plug-in connection into the hollow end of a stabilizer bar, comprising:

a housing;

a fastener having an externally-threaded shank segment extending from said housing;

a lock sleeve adapted to be disposed in the hollow end of the stabilizer bar and having a tapered throughbore; and

an adapter disposed in said tapered throughbore of said lock sleeve and having an internally-threaded bore, whereby tightening of said threaded shank segment into said threaded bore of said adapter causes axial movement of said adapter relative to said shank segment for causing radial expansion of said lock sleeve such that its outer wall surface is forcibly urged into engagement with the inner wall surface of the hollow end of the stabilizer bar.

21. The end link of claim 20 wherein said throughbore in said lock sleeve is conically tapered, and wherein said adapter has a conically tapered outer wall surface which mates with said conically tapered throughbore.

22. The end link of claim 20 wherein said lock sleeve is an elongated split ring having an expansion slot for permitting radial expansion of said outer wall surface of said locking sleeve in response to tightening of said threaded shank segment into said threaded bore.

23. The end link of claim 20 wherein said inner wall surface of the hollow end of said stabilizer bar is formed in a tapered end segment thereof such that a tapered outer wall surface of said lock sleeve engages a tapered inner wall surface of said tapered end segment.