Clutch Pedal Mounting Bracket for Hydraulic Pump Support

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Solution Overview

Problem

The hydraulic clutch system in Chevrolet utility vehicles with manual transmission experiences premature failure due to insufficient support for the hydraulic pump, leading to frequent breakage of the clutch pedal base, necessitating costly and inconvenient replacement.

Innovation Solution

A metal mounting bracket assembly with a washer, coupling, cover, and nut is designed to provide a solid support for the hydraulic pump, utilizing an octagonal hole and grub screws to secure the assembly to the pedal base, ensuring the pump is properly fastened and aligned, thus distributing forces effectively.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If the hydraulic pump is mounted using only four vertices of the irregular octagonal body in the plastic base, then the installation is simple and quick, but the support strength is insufficient leading to premature base breakage

Engineering Contradiction:
Improveinstallation simplicityVSAvoidsupport strength
Core Design Contradiction:
Ease of manufactureVSStrength

Solution Approach 1:

A metal mounting bracket is introduced as an intermediary component between the hydraulic pump and the plastic pedal base. The bracket receives the pump at its vertices and distributes the forces to multiple areas of the bracket, preventing direct concentration of stress on the plastic base vertices and eliminating the breakage problem while maintaining simple installation.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The solution combines different materials: the original plastic pedal base is retained, a metal mounting bracket is added for structural strength, and the hydraulic pump remains unchanged. This composite approach leverages the advantages of each material - the plastic base provides insulation and corrosion resistance, while the metal bracket provides the necessary mechanical strength to distribute loads.

Inventive Principle:
Principle #40Composite materials

2Reliability

If the entire clutch pedal base is replaced when breakage occurs, then the structural integrity is restored, but the maintenance cost and complexity increase significantly

Engineering Contradiction:
Improvestructural integrityVSAvoidreplacement complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The solution segments the replacement problem into two independent parts: the durable plastic pedal base that can be retained, and the failure-prone mounting interface that is replaced by the metal bracket. This allows replacement of only the problematic mounting system rather than the entire assembly, reducing maintenance complexity and cost.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Instead of discarding the entire pedal base assembly when breakage occurs, the solution recovers and reuses the intact plastic base and pedal components. Only the metal mounting bracket needs replacement, which is a simple, inexpensive component that can be quickly swapped without affecting other parts of the system.

Inventive Principle:
Principle #34Discarding and recovering

3Device complexity

If the hydraulic pump is supported only at four vertices, then the mounting structure is simple, but the forces from the pedal are not properly distributed causing base failure

Engineering Contradiction:
Improvemounting structure complexityVSAvoidforce distribution
Core Design Contradiction:
Device complexityVSForce

Solution Approach 1:

The metal mounting bracket serves multiple functions: it provides structural support, distributes forces from the pedal across multiple attachment points, anchors the hydraulic pump securely, and protects the plastic base from stress concentration. This multi-functional component resolves the contradiction by handling force distribution without significantly increasing overall system complexity.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentUS11691505B2Support for the anchoring of an automotive clutch hydraulic pump
Publication Date: 2023.07.04 GONZALEZ CALDERON DARIO ERNESTO
  • US11691505B2 patent drawing
  • US11691505B2 patent drawing
  • US11691505B2 patent drawing

AI summary

The present invention relates to a mounting bracket for the fastening an automotive clutch hydraulic pump as an automotive repair or spare part; the mounting bracket comprises an mounting bracket assembly consisting of a washer, a coupling and a cover. This mounting bracket assembly is inserted through one extremity of the damaged pedal base, and the nut with which the mounting bracket assembly will be screwed is installed through the interior of the pedal base; the safety grub screws are tightened, leaving it ready to withstand the forces exerted between the clutch pedal and the automotive hydraulic pump.