Unlock instant, AI-driven research and patent intelligence for your innovation.

Brake piston having non-circular end face for disc brake assembly with electric parking brake

A disc brake, non-circular technology, applied in the direction of brake parts, pistons, brake discs, etc., can solve the problems of not being able to obtain packaging space, not being easy to obtain, not being easily interchangeable, etc.

Pending Publication Date: 2020-06-16
ZF ACTIVE SAFETY US INC
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A second actuator or additional mechanism makes EPBs more expensive for dual brake pistons
However, a single brake piston of increased diameter requires additional packaging space, which may not be readily available
For example, on a vehicle with a conventional (i.e., non-EPB) parking brake, the additional packaging space would not be available
As a result, an EPB with a single brake piston of increased diameter would not be easily interchangeable with conventional parking brakes
Additionally, the increased diameter makes it more challenging to package the EPB's spindle nut and spindle into a single piston

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Brake piston having non-circular end face for disc brake assembly with electric parking brake
  • Brake piston having non-circular end face for disc brake assembly with electric parking brake
  • Brake piston having non-circular end face for disc brake assembly with electric parking brake

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0039] now refer to Figure 1 to Figure 4 , shows a disc brake assembly (indicated generally at 100) having a brake piston (indicated generally at 102) having a planar non-circular end face 104 (at figure 1 shown in dotted line). The general structure and operation of disc brake assembly 100 is well known in the art. For example, disc brake assembly 100 may be such as that disclosed by Sternal et al., U.S. Patent No. 8,844,683, Schaefer et al., U.S. Patent Application Publication No. 2017 / 0261053, or Gerber et al., U.S. Patent Publication No. 2018 / 0087589, The disclosures of all of these patents are hereby incorporated by reference in their entirety.

[0040] The disc brake assembly 100 includes a sliding brake caliper 106 . The brake caliper 106 is mounted in a floating manner by means of a brake carrier (not shown), in a manner known to those skilled in the art. The brake caliper 106 also spans a brake disc 108 that is rotationally fixedly coupled to a vehicle wheel 109 ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a brake piston for use in a disc brake assembly having an external surface disposed along a longitudinal axis; and a non-circular end face being disposed perpendicular to the external surface and the longitudinal axis. The non-circular end-face and the external surface define a cavity and the non-circular end face is configured to engage with a brake disc when the disc brakeassembly is actuated.

Description

technical field [0001] The present invention relates generally to a vehicle disc brake assembly, and more particularly to an improved brake piston for use with the parking brake function of such a disc brake assembly. Background technique [0002] A typical disc brake assembly for a vehicle includes a brake disc secured for rotation with a wheel of the vehicle and non-rotating brake pads, which may be Operate between brake position and brake position. Each of the brake pads is supported on a brake shoe. In the unbraked position, the brake pads do not slow down the rotation of the brake disc and the vehicle's wheels. In the braking position, the brake pads frictionally engage the brake disc to slow the rotation of the brake disc and the vehicle's wheels. The disc brake assembly further includes a brake piston and a sliding brake caliper. The brake piston is a cylinder with constant diameter and rounded end faces. The round end applies pressure to the brake lining. Easy ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): F16D65/04F16D65/12F16D65/14F16D121/04
CPCF16D65/04F16D65/12F16D65/14F16D2121/04F16D2125/06F16D65/18F16J1/00
Inventor M·巴尔博萨C·麦考密克
Owner ZF ACTIVE SAFETY US INC