HEV brake pedal assembly with pedal return mechanism

Patent metadata

Field	Value
Publication number	US-9760109-B2
Application number	US-201313875191-A
Country	US
Kind code	B2
Filing date	May 1, 2013
Priority date	May 1, 2013
Publication date	Sep 12, 2017
Grant date	Sep 12, 2017

Abstract

A brake pedal assembly includes an assembly frame, a pedal arm pivotally carried by the assembly frame, a booster input rod, a booster washer carried by the booster input rod, a rod actuating element carried by the pedal arm and engaging the booster input rod and a biasing device interposed between the booster washer and the rod actuating element.

First claim

What is claimed is:

1. An HEV brake pedal assembly, comprising:
an assembly frame;
a pedal arm pivotally carried by the assembly frame and a pedal upstop disposed on an upper face of the pedal arm;
a booster input rod;
a booster washer fixedly carried by the booster input rod;
an hourglass-shaped rod actuating element carried by the pedal arm through a pair of circular-crossectioned pins removably engaging an indented groove in an exterior surface of said hourglass-shaped rod actuating element and slidably carried by the booster input rod, the booster input rod slidably extending through an opening in the rod actuating element to engage by the pedal arm; and
a biasing device interposed to surround the booster input rod between a surface of the booster washer and a surface of the rod actuating element to substantially bridge a gap extending between the booster washer and the rod actuating element, the rod actuating element configured to actuate the booster input rod upon closure of the gap and the biasing device configured to maintain a hysteresis force on the pedal arm during return of the pedal arm to a brake release position, the biasing device further configured to normally bias the pedal arm by pushing the pedal arm against the pedal arm upstop in the brake release position, the pedal arm upstop defining a maximum in pedal arm travel in the brake release position, the booster input rod applying the hysteresis force against the pedal arm.

2. The brake pedal assembly of claim 1 wherein the biasing device comprises at least one spring.

3. The brake pedal assembly of claim 1 further comprising at least one booster spring configured to normally bias the pedal arm and the brake pedal in the brake release position.

4. The brake pedal assembly of claim 1 wherein the booster input rod is configured to apply the hysteresis force against brake pedal via the pedal arm.

5. An HEV brake pedal assembly, comprising:
an assembly frame;
a pedal flange carried by the assembly frame;
a pedal arm pivotally carried by the pedal flange and a pedal upstop disposed on an upper face of the pedal arm;
a brake pedal and the pedal arm pivotal between the brake release position and a braking position;
a booster input rod;
a booster washer fixedly carried by the booster input rod;
an hourglass-shaped rod actuating element carried by the pedal arm through a pair of circular-crossectioned pins removably engaging an indented groove in an exterior surface of said hourglass-shaped rod actuating element and and slidably carried by the booster input rod, the booster input rod slidably extending through an opening in the rod actuating element to engage the pedal arm;
a gap between the booster washer and the rod actuating element when the brake pedal and the pedal arm are disposed in the release position, the gap closed as the brake pedal and the pedal arm pivot from the release position to the braking position; and
a biasing device interposed to surround the booster input rod between a surface of the booster washer and a surface of the rod actuating element to substantially bridge a gap extending between the booster washer and the rod actuating element, the rod actuating element configured to actuate the booster input rod upon closure of the gap and the biasing device configured to maintain a hysteresis force on the pedal arm during return of the pedal arm to a brake release position, the biasing device further configured to normally bias the pedal arm by pushing the pedal arm against the pedal arm upstop in the brake release position, the pedal arm upstop defining a maximum in pedal arm travel in the brake release position, the booster input rod applying the hysteresis force against the pedal arm.

6. The brake pedal assembly of claim 5 wherein the biasing device comprises at least one spring.

7. The brake pedal assembly of claim 5 further comprising at least one booster spring configured to normally bias the pedal arm and the brake pedal in the brake.

8. The brake pedal assembly of claim 5 wherein the booster input rod is configured to apply the hysteresis force against the brake pedal via the pedal arm.

Assignees

• Ford Global Tech Llc

Inventors

• Khan Adil
• Muddiman Mark Warren

Classifications

• G05G5/05

  Means for returning or tending to return controlling members to an inoperative or neutral position, e.g. by providing return springs or resilient end-stops (G05G5/28 takes precedence) · CPC title

• G05G1/44 Primary

  pivoting · CPC title

• G05G5/03

  Means for enhancing the operator's awareness of arrival of the controlling member at a command or datum position; Providing feel, e.g. means for creating a counterforce (arrangements for indicating the position of the controlling member G05G1/015) · CPC title

• Y10T74/20528

  Foot operated · CPC title