Windshield Vibration Suppression via Segmented Support
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Solution Overview
Problem
Existing wind noise reduction apparatuses either fail to suppress vibrations caused by air eddies due to loose fixation points or increase cost and weight with hard structures, and may impair heat dissipation and ambient sound recognition.
Innovation Solution
A wind noise reduction apparatus with a windshield portion having fixed ends and a support structure that includes a catching portion for the helmet chin strap, featuring a curved surface and elastic elements to reduce wind noise while maintaining ambient sound clarity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a hard and thick block-like structure is used to prevent windshield vibration, then vibration suppression is improved, but cost and weight increase
Solution Approach 1:
The patent uses a thin film structure (windshield) combined with a specific support configuration (multiple support portions at front, rear, upper, and lower ends) to suppress vibrations without requiring hard and thick block-like structures. The windshield is made of a thin film material that can flex while the support portions prevent excessive vibration caused by air eddies.
Solution Approach 2:
The patent divides the support structure into multiple discrete support portions located at different positions (front end, rear end, upper end, lower end) rather than using a single continuous support structure. This segmentation allows targeted vibration suppression at critical locations while minimizing overall material usage and weight.
2Ease of operation
If the lower end or rear end of the windshield is not fixed, then ease of installation is improved, but vibration suppression deteriorates
Solution Approach 1:
The patent segments the fixation function across multiple discrete support portions (front, rear, upper, lower ends) rather than requiring continuous fixation. This allows the windshield to be easily installed with discrete attachment points while still achieving effective vibration suppression through the distributed support structure.
Solution Approach 2:
The patent incorporates support portions that are pre-positioned at critical locations (front, rear, upper, lower ends) to proactively prevent vibration issues before they occur. These support portions are built into the structure in advance, eliminating the need for complex post-installation adjustments while ensuring vibration suppression.
3Ease of operation
If a wide chin strap is used as a fixation point, then ease of installation is improved, but vibration suppression deteriorates
Solution Approach 1:
The patent replaces the single wide chin strap fixation with multiple discrete support portions distributed at front, rear, upper, and lower ends of the windshield. This segmentation provides multiple stable fixation points that better suppress vibrations while maintaining ease of installation through the distributed attachment system.
4Object-affected harmful factors
If the windshield is exposed to air current from the front side, then wind noise reduction is improved, but vibration generation worsens
Solution Approach 1:
The patent uses a thin film windshield structure that can flex in response to air currents, allowing it to maintain effective wind noise blocking while the flexible nature reduces the generation of high-frequency vibrations compared to rigid structures.
Solution Approach 2:
The patent pre-positions support portions at critical locations (front, rear, upper, lower ends) to proactively counteract vibrations before they are generated by air current exposure. This preliminary structural arrangement prevents vibration issues before the windshield is exposed to wind.
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 apparatus effectively suppresses wind noise by directing airflow away from the ear and reducing vibrations, while maintaining ambient sound clarity and enhancing user comfort and safety during outdoor activities.
Implementation Method 1
An air eddy generated by the exposure of the windshield to the air current from the front side in a location away from the fixation part of the windshield causes vibration of the windshield
Implementation Method 2
An air eddy generated by the exposure of the windshield to the air current from the front side in a location away from the fixation part of the windshield causes vibration of the windshield and generates a high frequency sound
Data Source
AI summary
There is provided a wind noise reduction apparatus that has a simple structure to suppress vibration caused by an air current generated in the course of protection against the wind, while not reducing ambient sound. A wind noise reduction apparatus 1 includes a windshield portion 2 having a first surface 21 that is defined by four sides of a front end 23, a rear end 24, an upper end 25 and a lower end 26 and that is arranged to face an ear front surface and a second surface 22 that is arranged on an opposite side to the first surface; one or multiple support portions 3 stood upright from the first surface 21 of the windshield portion 2; and a catching portion 4 including an insertion hole or insertion opening 44 that is used to hold a chin strap B of a helmet and that is located between a front edge and a rear edge 33 of the support portion 3. The windshield portion 2 is supported by a three or more supporting point structure of the front end 23 of the windshield portion 2 and the support portion 3.