Suspension thrust bearing device

• US 20050089255A1
• Filed: 09/03/2004
• Published: 04/28/2005
• Est. Priority Date: 09/04/2003
• Status: Active Grant

• Current Assignee: ABet SKF
• Original Assignee: ABet SKF
• Inventors: Poulle, Thierry, Debrailly, Franck
• Granted Patent: US 7,114,853 B2
• Time in Patent Office: Days
• US Class Current: 384/609
• CPC Class Codes: B60G 15/068 specially adapted for MacPherson strut-type suspension
• CPC Class Codes: B60G 2204/418 Bearings, e.g. ball or roller bearings
• CPC Class Codes: F16C 19/10 for axial load mainly
• CPC Class Codes: F16C 2326/05 Vehicle suspensions, e.g. bearings, pivots or connecting rods used therein
• CPC Class Codes: F16C 43/04 Assembling rolling-contact bearings

Abstract

A suspension thrust bearing device includes a rolling bearing provided with two races and with rolling elements arranged between the races, and two caps each in contact with one race, one of the caps including a circular flange and the other cap including an axial portion provided with hooks intended for latching onto the said flange, which hooks leave an axial space of height b remaining between the said hooks and the said flange, one of the caps including an operational part provided with a chamfer intended to facilitate latching with the other cap, with an axial surface of height a and of diameter D and with a radial retention surface, and the other cap including an operational part provided with a chamfer intended to facilitate latching, with an axial surface of height c and with a radial retention surface, the sum of the heights a+b+c being greater than 1.9% of the diameter D.

Claims

1. Suspension thrust bearing device comprising a rolling bearing provided with two races and with rolling elements arranged between the races, and two caps each in contact with one race, one of the caps comprising a circular flange and the other cap comprising an axial portion provided with hooks intended for latching onto the said flange, the hooks leaving an axial space of height b remaining between the said hooks and the said flange, one of the caps comprising an operational part provided with a chamfer intended to facilitate latching with the other cap, with an axial surface of height a and of diameter D and with a radial retention surface, and the other cap comprising an operational part provided with a chamfer intended to facilitate latching, with an axial surface of height c and with a radial retention surface, the sum of the heights a+b+c being greater than 1.9% of the diameter D.

2. Device according to claim 1, wherein the caps are made of synthetic material.

3. Device according to claim 2, wherein the caps comprise polyamide.

4. Device according to claim 1, wherein one of the caps is a lower cap provided with a lower bearing surface for a spring.

5. Device according to claim 1, wherein one of the caps is an upper cap provided with a downwardly directed axial skirt equipped with hooks over its bore, the said skirt covering at least one circular flange of the other cap.

6. Device according to claim 1, wherein one of the caps is an upper cap provided with a downwardly directed axial skirt provided with a flange on an inner portion, the said skirt covering at least part of the other cap which comprises hooks.

7. Device according to claim 1, wherein the height c is greater than the height a.

8. Device according to claim 1, wherein the height c is less than the height a.

9. Device according to claim 1, wherein the height c is greater than the height b.