Pivot pad brake caliper

Patent metadata

Field	Value
Publication number	US-9416829-B2
Application number	US-201114124314-A
Country	US
Kind code	B2
Filing date	Aug 2, 2011
Priority date	Jun 9, 2011
Publication date	Aug 16, 2016
Grant date	Aug 16, 2016

Abstract

A caliper housing including a piston bore and a bridge extending between the piston bore and a pair of caliper fingers interconnecting the caliper fingers and the piston bore. The caliper fingers of the caliper housing extend downwardly from the bridge to define a flat surface. A rotor having a disc shape defines a first side and a second side and disposed adjacent to the caliper fingers. An outer brake pad defining a first centroid is disposed adjacent to the first side of the rotor abutting the caliper fingers allowing the caliper fingers to urge the outer brake pad into engagement with the first side of the rotor. Each of the caliper fingers defines a pivot edge extending between the outer brake pad and the flat surface of the caliper fingers allowing the outer brake pad to pivot about the pivot edge.

First claim

What is claimed is:

1. A brake caliper assembly for a vehicle comprising:
a caliper housing including a piston bore of generally cylindrical shape disposed horizontally along a first center axis and a bridge extending between said piston bore and caliper fingers and interconnecting said caliper fingers and said piston bore,
said caliper finger extending downwardly from said bridge to define a flat surface,
a rotor of generally disc shape defining a first side and a second side for rotation about a second center axis and disposed adjacent to said caliper finger,
an outer brake pad defining a first centroid disposed between said first side of said rotor and said caliper finger,
each of said caliper fingers defining a pivot edge extending between said outer brake pad and said flat surface of said caliper fingers,
said outer brake pad pivotable about said pivot edge,
wherein said pivot edge is located in a position to facilitate pivotal movement of said outer brake pad relative to said flat surface of said caliper fingers, and
wherein said pivot edge is generally aligned with said first centroid of said outer brake pad in a radial direction which is perpendicular to said first center axis, and
wherein said pivot edge is spaced from said first centroid of said outer brake pad in said radial direction by a distance of no more than twenty-five percent (25%) of the height of said outer brake pad.

2. An assembly as set forth in claim 1 wherein said caliper fingers taper downwardly from said pivot edge to a caliper finger distal end.

3. An assembly as set forth in claim 1 including a piston defining a second centroid disposed in said piston bore wherein said second centroid is within said middle twenty-five percent (25%) of said first centroid of said outer brake pad.

4. An assembly as set forth in claim 3 wherein said flat surface of said caliper finger includes an interface surface protruding from said flat surface to define said pivot edge on a shoulder engaging said outer brake pad.

5. An assembly as set forth in claim 1 wherein said rotor defines a center aperture disposed along said second center axis extending between said first side of said rotor and said second side of said rotor.

6. An assembly as set forth in claim 1 wherein said outer brake pad comprises of an outer brake pad mounting plate and a first frictional material disposed on said outer brake pad mounting plate.

7. An assembly as set forth in claim 1 including an inner brake pad adjacent to said piston bore between said second side of said rotor and said piston bore.

8. An assembly as set forth in claim 7 wherein said inner brake pad comprises of an inner brake pad mounting plate and a second frictional material disposed on said inner brake pad mounting plate.

9. An assembly as set forth in claim 8 including a second shim disposed on said inner brake pad between said piston bore and said inner brake pad mounting plate.

10. An assembly as set forth in claim 9 including a brake pad wear indicated attaching to said second shim of said inner brake pad and extending perpendicularly from said second shim toward said rotor for monitoring the attrition of said inner brake pad.

11. An assembly as set forth in claim 1 wherein said piston bore include a pair of mounting arms extending horizontally and diametrically outwardly from said piston bore to a distal end.

12. A brake caliper assembly for a vehicle comprising:
a caliper housing including a piston bore of generally cylindrical shape disposed horizontally along a first center axis and a bridge extending between said piston bore and a pair of caliper fingers interconnecting said caliper fingers and said piston bore,
said caliper fingers of said caliper housing extending downwardly from said bridge in a spaced and parallel relationship to define a flat surface,
a rotor of generally disc shape defining a first side and a second side for rotation about a second center axis and disposed adjacent to said caliper fingers,
said rotor defining a center aperture disposed along said second center axis extending between said first side of said rotor and said second side of said rotor,
an outer brake pad defining a first centroid disposed adjacent to said first side of said rotor abutting said caliper fingers allowing said caliper fingers to urge said outer brake pad into engagement with said first side of said rotor,
said outer brake pad comprising an outer brake pad mounting plate and a first frictional material disposed on said outer brake pad mounting plate,
a first shim disposed on said outer brake pad between said caliper fingers and said outer brake pad mounting plate,
an inner brake pad disposed adjacent to said piston bore between said second side of said rotor and said piston bore,
said inner brake pad comprising an inner brake pad mounting plate and a second frictional material disposed on said inner brake pad mounting plate,
a piston defining a second centroid disposed in said piston bore along said first center axis abutting said inner brake pad for urging said inner brake pad against said second side of said rotor,
a second shim disposed on said inner brake pad between said piston and said inner brake pad mounting plate,
a brake pad wear indicator attaching to said second shim of said inner brake pad and extending perpendicularly from said second shim toward said rotor for monitoring the attrition of said inner brake pad,
said mounting plates of said brake pads including a pair of guides extending horizontally and diametrically from said mounting plate,
said piston bore including a pair of mounting arms extending horizontally and diametrically outwardly from said piston bore to a distal end,
said distal end of each of said mounting arms defining a mounting aperture for attaching said caliper housing to a support bracket,
said support bracket of generally cradle shape including a base and a pair of legs extending perpendicularly from said base in a space and parallel relationship defining a channel extending between said legs and said base of said support bracket,
said base of said support bracket defining a plurality of apertures for securing said support bracket to the vehicle,
each of said legs of said support bracket including a plurality of flanges extending from said leg in a perpendicular relationship to define a plurality of recesses,
said guides of said brake pads disposed in said recesses of said legs attaching said brake pads between said legs of said support bracket,
said support bracket disposed over said rotor allowing a portion of said rotor to pass through said channel of said support bracket and said outer brake pad disposed adjacent to said first side of said rotor and said inner brake pad disposed adjacent to said second side of said rotor and movable into brake engagement therewith,
each of said caliper fingers defining a pivot edge extending between said outer brake pad and said flat surface of said caliper fingers,
said outer brake pad pivotable about said pivot edge,
each of said caliper fingers tapering downwardly from said pivot edge to a caliper finger distal end,
wherein said pivot edge is located in a position to facilitate pivotal movement of said outer brake pad relative to said flat surface of said caliper fingers,
wherein said pivot edge is generally aligned with said first centroid of said outer brake pad in a radial direction which is perpendicular to said first center axis, and
wherein said pivot edge and said second centroid of said piston are spaced from said first centroid of said outer brake pad in said radial direction by a distance of no more than twenty-five percent (25%) of the height

Assignees

• Hoxie Steven Glenn
• Reder Martin John
• Beijingwest Ind Co Ltd

Inventors

• Hoxie Steven Glenn
• Reder Martin John

Classifications

• F16D55/2265

  the axial movement being guided by one or more pins {engaging bores in the brake support or the brake housing} · CPC title

• F16D65/12

  Discs; Drums for disc brakes · CPC title

• B60T1/065

  employing disc (B60T1/062 takes precedence) · CPC title

• F16D55/2262

  the axial movement being guided by open sliding surfaces, e.g. grooves · CPC title

• F16D55/226 Primary

  in which the common actuating member is moved axially {, e.g. floating caliper disc brakes} · CPC title