Waterproof Cover for Vehicle Middle Body Frame Rust Prevention

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Solution Overview

Problem

The middle body frame portion of vehicles with rigid engines tends to rust due to exposure to temperature, water splashing, and inadequate drying, particularly because it is positioned between the engine and the link mechanism where water accumulation and stagnation occur.

Innovation Solution

A waterproof cover is mounted on the middle body frame portion to prevent water splashing and ensure better air circulation, thereby reducing the risk of rust by overlapping with the side members and positioned to efficiently divert water away from the middle frame.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the middle body frame portion is left exposed to allow air circulation and drying, then drying efficiency is improved, but water splashing and rust occurrence increase

Engineering Contradiction:
Improverust resistanceVSAvoidwater exposure
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

A waterproof cover is introduced as an intermediary component between the water source (front wheels/tires) and the middle body frame portion. This cover acts as a mediator that blocks water splashing while allowing air circulation, thus preventing rust without compromising drying efficiency

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The waterproof cover is selectively applied only to the middle body frame portion that is most susceptible to water exposure and rust, rather than covering the entire body frame. This localized protection maintains overall air circulation while providing targeted rust prevention

Inventive Principle:
Principle #3Local quality

2Object-affected harmful factors

If the waterproof cover is positioned to overlap side members for maximum protection, then water blocking is improved, but device complexity increases

Engineering Contradiction:
Improvewater blockingVSAvoidcover positioning
Core Design Contradiction:
Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The waterproof cover is integrated with the existing side members of the body frame, utilizing their structural overlap relationship. This merging approach allows the cover to leverage the existing framework for positioning and support, reducing the need for additional complex mounting structures

Inventive Principle:
Principle #5Merging (Combining)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The implementation of a waterproof cover effectively prevents rust on the middle body frame by ensuring it is not exposed to water and promotes drying, addressing the specific conditions that lead to rust formation.

Implementation Method 1

A waterproof cover is mounted on the middle body frame portion to prevent water splashing

Methodology Applied
Scientific EffectPhysical barrier (waterproof cover):

Implementation Method 2

ensures better air circulation, thereby reducing the risk of rust by overlapping with the side members and positioned to efficiently divert water away from the middle frame

Methodology Applied
Scientific EffectEvaporation: Evaporation

Data Source

PatentEP3476709B1vehicle
Publication Date: 2020.12.02 YAMAHA MOTOR CO LTD
  • EP3476709B1 patent drawingFigure 1
  • EP3476709B1 patent drawingFigure 2
  • EP3476709B1 patent drawingFigure 3

AI summary

A waterproof cover 90R, 90L is attached to a portion of a body frame 21 that is positioned behind a rear end of a left side member 53 and ahead of left and right engine supporting portions of the body frame 21 when looking at a vehicle standing in an upright state from the left of the vehicle in a position where at least a portion of the waterproof cover 90R, 90L overlaps at least one of a right side member 54 and the left side member 53 when looking at the vehicle from the front of the vehicle.