Independent springing guides for floating rotors

• US 20040069575A1
• Filed: 10/11/2002
• Published: 04/15/2004
• Est. Priority Date: 10/11/2002
• Status: Abandoned Application

• Current Assignee: Delphi Technologies, Inc. (BorgWarner Incorporated)
• Original Assignee: Delphi Technologies, Inc. (BorgWarner Incorporated)
• Inventors: Deyer, Keith W., Kowalczyk, Richard J., Mura, Paul J
• Application Number:
  US10/269,496
• Publication Number:
  US 20040069575A1
• Time in Patent Office: Days
• US Class Current: 188/18A
• CPC Class Codes: F16D 2065/1368 with relative movement both radially and axially
• CPC Class Codes: F16D 2065/1392 Connection elements
• CPC Class Codes: F16D 2065/1396 Ancillary resilient elements, e.g. anti-rattle or retraction springs
• CPC Class Codes: F16D 65/12 Discs; Drums for disc brakes

Abstract

A disc brake assembly includes a rotatable hub and at least one disc supported on the hub for rotation therewith about an axis, and slideable axially along the hub. A guide member is disposed between the hub and disc. A spring member is separately formed from the guide member and acts between the guide member and the hub to impart a constant radial force against the guide member and thus the disc in such manner as to position the guide member in constant engagement with the disc to maintain alignment and prevent rattling of the disc on the hub.

Claims

1. A disc brake assembly, comprising:

a hub having an outer surface and an axis of rotation;

at least one disc disposed on said hub for rotation therewith about said axis and for relative axial sliding movement along said hub;

at least one guide member disposed between said hub and said at least one disc and slideably engaging said at least one disc for relative movement therewith along said axis; and

at least one spring member formed as a separate piece from said at least one guide member and acting between said at least one guide member and said hub to impart a constant radially outward spring force on said at least one guide member to maintain said at least one guide member in constant engagement with said at least one disc.

2. The disc brake assembly of claim 1 wherein said at least one guide member has a recess on a back side thereof in which said at least one spring member extends.

3. The disc brake assembly of claim 1 wherein said hub has a cavity extending radially inwardly from said outer surface and said at least one spring member is disposed in said cavity between said hub and said at least one guide member.

4. The disc brake assembly of claim 3 wherein said cavity conforms generally to the shape of said at least one spring member to maintain said at least one spring member with said cavity.

5. The disc brake assembly of claim 3 wherein said hub has a recess radially outward from said cavity for receiving and maintaining said at least one guide member within said recess.

6. The disc brake assembly of claim 5 wherein said at least one guide member has a pair of tabs extending radially inwardly and into said recess.

7. The disc brake assembly of claim 3 wherein said hub has at least one groove extending radially inwardly from said outer surface and axially in the direction of said axis and said at least one disc includes at least one projection extending radially inwardly into said at least one groove and for axial sliding movement therealong and to support said at least one disc for conjoint rotational movement with said hub.

8. The disc brake assembly of claim 7 wherein said at least one groove extends across said cavity.

9. The disc brake assembly of claim 8 wherein said at least one guide member is compressed by said at least one projection of said at least one disc radially inwardly of said outer surface of said hub and compressing said at least one spring member within said cavity to provide a constant radial preload between said at least one disc and said hub.

10. The disc brake assembly of claim 7 wherein said at least one groove is radially offset from said cavity.

11. The disc brake assembly of claim 10 wherein said at least one guide member is supported at least partially radially outwardly from said outer surface of said hub while compressed by said at least one disc to impart a constant radial preload between said at least one disc and said hub.

12. The disc brake assembly of claim 1 wherein said at least one spring member comprises a coil spring.

13. The disc brake assembly of claim 1 wherein said at least one spring member comprises a leaf spring.

14. The disc brake assembly of claim 1 wherein said at least one spring member comprises a spring washer.

15. The disc brake assembly of claim 1 wherein the radial force between said at least one guide member and said hub has a magnitude determined entirely by said at least one spring member and independently of said at least one guide member.

16. The disc brake assembly of claim 1 wherein said at least one guide member has a surface with a radius of curvature and said at least one disc has a bore with a radius of curvature, said radius of curvature of said surface being generally the same as said radius of curvature of said bore while in an unassembled state to isolate said at least one guide member from contributing to said radial force.

17. The disc brake assembly of claim 1 wherein said at least one guide member includes at least one axially extending abutment disposed in said constant engagement with said at least one disc.

18. The disc brake assembly of claim 17 wherein said at least one axially extending abutment is formed integrally as one piece with said at least one guide member.

19. The disc brake assembly of claim 1 wherein there are a plurality of said discs, a plurality of said guide members, and a plurality of said spring members.