Motorcycle Headlamp Positioning for Conspicuousness

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Solution Overview

Problem

Conventional straddle-type or saddle-ride vehicles face challenges in ensuring the conspicuousness of head lamps while maintaining a compact front portion, as the size of the head lamps is often increased to enhance visibility, leading to potential interference with vehicle components and increased size.

Innovation Solution

The configuration involves positioning head lamps in a dark space or volume created by the vehicle's design, utilizing the contrast between the brightness of the lamps and the surrounding darkness to enhance conspicuousness, while reducing the size of the head lamps and maintaining aerodynamic and structural integrity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Illumination intensity

If the size of head lamps is increased to enhance visibility and conspicuousness, then the illumination function is improved, but the front portion of the vehicle becomes larger and may interfere with other vehicle components

Engineering Contradiction:
Improveconspicuousness of head lampsVSAvoidsize of front portion
Core Design Contradiction:
Illumination intensityVSVolume of moving object

Solution Approach 1:

The patent positions head lamps in the vehicle width direction (lateral dimension) rather than increasing their size in the vehicle front-and-rear direction (longitudinal dimension). By utilizing the wide space formed by the front cover and side covers in the width direction, the head lamps achieve sufficient conspicuousness without increasing the front-to-rear length of the vehicle.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Illumination intensity

If the size of head lamps is increased to ensure conspicuousness, then the visibility function is improved, but the device complexity and potential interference with vehicle components increases

Engineering Contradiction:
Improveconspicuousness of head lampsVSAvoidvehicle component arrangement
Core Design Contradiction:
Illumination intensityVSDevice complexity

Solution Approach 1:

The patent resolves component interference issues by arranging head lamps laterally in the width direction within the space between side covers, rather than positioning them forward in the longitudinal direction. This dimensional shift eliminates potential interference with the under bracket and other front portion components while maintaining conspicuousness.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

3Volume of moving object

If the front portion of the vehicle is made compact by utilizing the upper space, then the vehicle size is reduced, but the head lamps may interfere with moving vehicle components

Engineering Contradiction:
Improvesize of front portionVSAvoidinterference with vehicle components
Core Design Contradiction:
Volume of moving objectVSReliability

Solution Approach 1:

The patent avoids head lamp interference with moving components by positioning them in the vehicle width direction between the side covers, rather than in the upper space near the under bracket. This lateral positioning ensures that head lamps do not interfere with the under bracket's vertical movement during steering operations, maintaining reliability while keeping the front portion compact.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

Data Source

PatentEP2949556B1Vehicle
Publication Date: 2017.02.08 YAMAHA MOTOR CO LTD
  • EP2949556B1 patent drawing
  • EP2949556B1 patent drawing
  • EP2949556B1 patent drawing

AI summary

A motorcycle comprising a left side cover (73) and a right side cover (74) which are arranged at a position further leftward/rightward than a left fork pipe (32)/a right fork pipe (33) and a front wheel (37) to extend in a top-and-bottom direction and to extend rearward from a position in front of the left fork pipe (32)/the right fork pipe (33), respectively, a front cover (71, 72, 73a, 74a) which is arranged in front of an upper bracket and a steering shaft to extend in a width direction and to extend forward and downward from a position further upward than a handle member (36) and a left head lamp (210L) and a right head lamp (210R) which are arranged in a space that is formed by the left side cover (73), the right side cover (74) and the front cover (71, 72, 73a, 74a).