Method of manufacturing brake boosters

Patent metadata

Field	Value
Publication number	US-11167739-B2
Application number	US-201916584127-A
Country	US
Kind code	B2
Filing date	Sep 26, 2019
Priority date	Jul 19, 2016
Publication date	Nov 9, 2021
Grant date	Nov 9, 2021

Abstract

A method of manufacturing vehicle brake boosters includes load testing a plurality of reaction discs and sorting the load-tested reaction discs into multiple, separate batches based on the load test results. A first batch of plunger plates is formed to an axial length to correspond with a first of the separate batches of reaction discs. A first batch of the vehicle brake boosters is assembled with a first one of the multiple, separate batches of reaction discs and the first batch of plunger plates to achieve a target jump-in force. A second batch of plunger plates is formed to an axial length to correspond with a second one of the separate batches of reaction discs. A second batch of the vehicle brake boosters is assembled with a second one of the multiple separate batches of reaction discs and the second batch of plunger plates to achieve the target jump-in force.

First claim

What is claimed is:

1. A method for adapting a vehicle brake booster for a desired jump-in force, the method comprising:
providing an elastic reaction disc configured to fit into the brake booster between an input member and an output member;
load testing the reaction disc;
selecting an overall axial length of a plunger plate to complement the reaction disc, based on results of the load testing of the reaction disc;
providing the plunger plate with the selected overall axial length; and
assembling the vehicle brake booster by locating the reaction disc and the plunger plate relative to the input member and the output member of the vehicle brake booster.

2. The method of claim 1 , wherein providing the plunger plate includes selecting the plunger plate pre-formed with the overall axial length that complements the reaction disc to achieve the desired jump-in force.

3. The method of claim 1 , wherein providing the plunger plate includes pressing the plunger plate on a brake booster assembly line to achieve the overall axial length that complements the reaction disc to achieve the desired jump-in force.

4. The method of claim 1 , wherein load testing the reaction disc includes measuring an output force in response to an input force.

5. The method of claim 1 , wherein the overall axial length of the plunger plate complements an elasticity of the reaction disc to produce the desired jump in-force.

Assignees

• Bosch Gmbh Robert

Inventors

• Sadanowicz David
• Horner Jr Charles Byron

Classifications

• B60T13/52 Primary

  indirect, i.e. vacuum booster units · CPC title

• G01L5/0038

  applying a pushing force · CPC title

• B60T8/30 Primary

  responsive to load {(B60T8/261, B60T8/262, B60T8/266 take precedence)} · CPC title

• B23P6/00

  Restoring or reconditioning objects (straightening or restoring form of sheet metal, metal rods, metal tubes, metal profiles, or specific articles made therefrom B21D1/00, B21D3/00; repairing defective or damaged objects by casting techniques B22D19/10) · CPC title

• B60T17/223

  Devices for pressurising brake systems acting on pedal · CPC title