Vehicle Front Structure With Outer Wiper Layout for Wider Wiping Range
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Solution Overview
Problem
Existing vehicle designs with low-hood structures face challenges in ensuring a wide enough wiping range for windshield wipers, as conventional configurations do not adequately account for positioning wiper drivers and wiper arms to achieve optimal visibility.
Innovation Solution
A vehicle front-portion structure featuring a die-cast framework with through-holes and wiper devices positioned on the outer side in the vehicle width direction, allowing for a wider wiping range and integration with wheel arches and suspension towers, while incorporating reinforcement ribs for structural support.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the wiper driver is disposed on the inner side in the vehicle width direction in the front portion of the vehicle, then the structure is simpler and easier to manufacture, but the wiping range of the wiper is limited and visibility is reduced
Solution Approach 1:
The patent positions the wiper driver on the outer side in the vehicle width direction, utilizing the lateral dimension to extend the wiping range. This dimensional repositioning allows the wiper arm to reach further across the windshield, improving visibility while maintaining a relatively simple structural configuration through the use of existing framework portions.
2Reliability
If the wiper device is disposed on the outer side in the vehicle width direction to ensure wider wiping range, then visibility is improved, but the structural complexity increases
Solution Approach 1:
The patent merges the wiper driver with the existing die-cast framework portion, specifically integrating it with the wheel arch and suspension tower structure. This consolidation allows the wiper driver to be positioned on the outer side for improved wiping range while avoiding additional structural complexity by utilizing already-present framework components.
Solution Approach 2:
The die-cast framework portion serves multiple functions: it provides structural support for the vehicle body, forms the wheel arch, supports the suspension tower, and now also serves as the mounting structure for the wiper driver. This multi-functionality reduces overall structural complexity while enabling the wiper driver to be positioned optimally for wide wiping range.
3Shape
If a low-hood structure is adopted for design purposes, then the vehicle appearance is improved, but the wiping range of the wiper is reduced
Solution Approach 1:
The patent compensates for the reduced wiping range caused by the low-hood structure by repositioning the wiper driver to the outer side in the vehicle width direction. This lateral positioning allows the wiper arm to achieve a wider sweeping arc, maintaining adequate wiping coverage despite the constrained vertical space from the low hood design.
Data Source
AI summary
A vehicle front-portion structure includes: a framework portion including a pair of member portions extending in a front-rear direction at both side portions in a vehicle width direction in a front portion of a vehicle, each of the member portions having a part including a through-hole, and a suspension tower portion. The vehicle front-portion structure includes a front windshield glass that separates an inside of a vehicle cabin and an outside of the vehicle cabin, and a wiper device fixed to the member portion in a state in which a part of the wiper device is disposed inside of the through-hole. The wiper device includes a wiper, and a wiper arm that supports the wiper and has a pivoting position positioned on an inner side in the vehicle width direction from the through-hole.