Motorcycle Accommodation Box Side Cover Overlap Design

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Solution Overview

Problem

The existing design of saddle-type vehicles with accommodation boxes located between the head pipe and seat often compromises rider comfort due to the wide profile of the accommodation box, making it difficult for riders to assume the knee grip posture as the doors are positioned on either side, increasing the width of the motorcycle's front section.

Innovation Solution

The design incorporates openable/closable side covers that overlap the accommodation box openings, allowing riders to easily access the box without widening their legs, thereby maintaining a comfortable knee grip posture while providing a sufficiently large accommodation space.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Volume of moving object

If the accommodation box width is enlarged to provide sufficient accommodation space, then the accommodation space is improved, but the motorcycle width increases making it difficult for riders to assume knee grip posture

Engineering Contradiction:
Improveaccommodation spaceVSAvoidknee grip posture
Core Design Contradiction:
Volume of moving objectVSEase of operation

Solution Approach 1:

The side cover is divided into an openable first portion and a closed second portion, allowing the accommodation box to maintain its width for sufficient space while the opening can be positioned to accommodate rider's legs, resolving the conflict between space and accessibility

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The side cover transitions from a fixed closed structure to a dynamically openable structure, enabling the opening to appear in positions that accommodate knee grip posture while maintaining the overall width for adequate accommodation space

Inventive Principle:
Principle #15Dynamics

2Ease of operation

If the doors are positioned on either side of the accommodation box, then access to the box is improved, but the width of the motorcycle front section increases

Engineering Contradiction:
Improveaccess to accommodation boxVSAvoidmotorcycle width
Core Design Contradiction:
Ease of operationVSLength of moving object

Solution Approach 1:

The opening in the side cover is nested within the width profile of the accommodation box, allowing side access functionality without increasing the overall motorcycle width, as the opening is contained within the existing structural boundaries

Inventive Principle:
Principle #7Nested doll (Nesting)

Data Source

PatentEP2871120B1Saddle-type vehicle
Publication Date: 2021.05.26 YAMAHA MOTOR CO LTD
  • EP2871120B1 patent drawingFigure 1
  • EP2871120B1 patent drawingFigure 2
  • EP2871120B1 patent drawingFigure 3

AI summary

A motorcycle (1) includes an accommodation box (20) which is located to the rear of a head pipe (3) and to the front of a seat (2), the accommodation box (20) including a first opening formed in at least one of a left portion and a right portion thereof, and an openable/closable first side cover (30) located outwardly in a vehicle width direction to the first opening of the accommodation box (20), wherein the first side cover (30) includes an opening (31) overlapping the first opening of the accommodation box (20) as seen in a vehicle side view when the first side cover (30) is closed.