Bi-material Belt Guard for Engine Compartment Protection
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Solution Overview
Problem
Existing motor vehicle mudguards fail to prevent water from entering the engine compartment, causing the accessory drive belt to slip and preventing engine restart, especially in wet conditions, and existing solutions like flexible or rigid mudguards do not effectively absorb shocks in interference zones with the belt casing.
Innovation Solution
A belt protector with a bi-material design, comprising a rigid polyamide part stiffened by fibers and a flexible thermoplastic part, positioned between the wheel and the belt casing to absorb shocks and prevent water ingress, while maintaining geometric integrity and noise reduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a rigid mudguard is used to maintain geometric integrity, then structural stability is improved, but shock absorption capability deteriorates
Solution Approach 1:
The mudguard incorporates a flexible part made of elastomeric material in the interference zone where shocks occur, while the rest of the structure remains rigid. This local differentiation allows the specific area subject to shocks to deform and absorb impacts, while the overall geometric integrity of the mudguard is maintained.
Solution Approach 2:
The mudguard is constructed as a composite structure combining rigid material (for overall stability) and flexible elastomeric material (for local shock absorption). This composite approach allows simultaneous achievement of geometric integrity and shock absorption capability in different zones of the same component.
2Reliability
If a flexible mudguard is used to absorb shocks, then shock absorption capability is improved, but geometric integrity deteriorates
Solution Approach 1:
The flexible elastomeric material is strategically positioned only in the interference zone where shocks occur, while the rest of the mudguard maintains its rigid geometric structure. This localized flexibility prevents overall geometric degradation while providing necessary shock absorption.
3Object-generated harmful factors
If a bi-material belt protector is used to absorb shocks, then noise pollution is reduced, but device complexity increases
Solution Approach 1:
The belt protector combines rigid and flexible elastomeric materials in a single integrated component. The flexible material absorbs shocks and reduces noise generated during interference with the belt casing, while the rigid portion maintains structural integrity. This composite design addresses noise reduction without requiring separate shock absorption components.
Solution Approach 2:
The shock absorption function and the protective barrier function are merged into a single bi-material belt protector component. The flexible and rigid portions work together within one integrated structure, eliminating the need for separate shock absorbers and simplifying the overall assembly.
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 bi-material belt protector effectively prevents water and gravel from entering the engine compartment, reduces noise pollution, and minimizes damage by absorbing shocks, ensuring reliable engine operation in wet conditions.
Implementation Method 1
the flexible part being located in an area of interference between said belt protector and said belt casing, so as to be able to absorb shocks between said belt guard and said belt guard
Data Source
Figure 1~2
Figure 3~5
AI summary
The invention mainly relates to a protector (1) for protecting a belt against a splash of water or gravel, which is to be attached between a wheel and a motor vehicle belt housing (5), characterized in that said belt protector comprises a rigid portion (13) and a flexible portion (14) that is surrounded by said rigid portion (13). Said flexible portion (14) is to be located in an interference area (15) between said belt protector (1) and said belt housing (5) such as to be able to absorb shocks between said belt protector (1) and said belt housing (5).