Motorcycle Radar Mounting for Vibration Reduction
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Solution Overview
Problem
Straddled vehicles equipped with radars for detecting forward objects face vibration issues due to the radar's cantilevered mounting, which affects detection performance, as the longer distance between the radar and the vehicle body frame increases the likelihood of vibration.
Innovation Solution
The radar is positioned more downwardly relative to the front cover and fender, reducing the front-rear distance and minimizing vibration, while being supported on a base stay that is cantilevered on the head pipe, allowing for stable detection without interfering with the headlight setup.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the radar is arranged as far forward as possible to improve detection capability, then the detection performance is improved, but the distance between the radar and the vehicle body frame increases causing the radar to vibrate more
Solution Approach 1:
The patent resolves the contradiction by changing the spatial arrangement from horizontal positioning to vertical positioning. The radar is arranged downward relative to the front end of the front cover, utilizing the vertical dimension to achieve both forward positioning (for detection capability) and close proximity to the vehicle body frame (for stability). This dimensional shift allows the radar to be forward without being far from the support structure.
2Measurement precision
If the radar is arranged forward relative to the head pipe to avoid interference with electromagnetic waves, then the detection capability is improved, but the cantilevered distance increases causing vibration
Solution Approach 1:
The patent positions the radar in the vertical dimension (downward relative to the front end) rather than only in the horizontal dimension (forward relative to head pipe). This allows the radar to be forward enough to avoid electromagnetic wave interference from the head pipe while maintaining a short cantilevered distance through the vertical support structure, thus preventing vibration.
Solution Approach 2:
The patent creates a localized support structure (support bracket) specifically for the radar that connects to the vehicle body frame. This localized quality ensures the radar is supported close to its forward position, providing both electromagnetic wave clearance and vibration reduction through dedicated structural support.
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
This configuration enables effective detection of forward objects by reducing radar vibration and maintaining a compact, efficient installation that supports both radar and headlight functionality.
Implementation Method 1
A radar transmits electromagnetic waves forward. The radar receives electromagnetic waves (hereinafter, reflected waves) coming from the front that have been reflected off an object.
Data Source
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AI summary
A motorcycle (1) includes a radar (60) that is supported on a vehicle body frame (10) and arranged forward relative to a head pipe (11). A front cover (40) includes a front end (420f), and a lower edge (42de) that extends leftward or rightward as the vehicle is viewed from the front and at least a portion of which is located at or below the front end (420f). At least a portion of the radar (60) is arranged downward relative to the front end (420f) of the front cover (40), downward relative to the lower edge (42de) and upward relative to a front fender (35).