Motorcycle Storage Box Interlocking Segmentation

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Solution Overview

Problem

Underbone type motorcycles face a challenge in maintaining sufficient storage box volumetric capacity while ensuring rider ground reach and storage box rigidity, as the interlocking of storage boxes with vehicle body covers increases seat width, compromising ground reach.

Innovation Solution

A motorcycle design featuring a storage box with limited interlocking portions to the vehicle body cover, allowing for increased volumetric capacity and improved ground reach by preventing excessive seat width expansion, with interlocking portions strategically placed on the storage box walls to enhance rigidity and accommodate a larger storage volume.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If the storage box is interlocked to the vehicle body cover at the front face and both side faces, then the storage box rigidity is ensured, but the seat width increases and rider ground reach worsens

Engineering Contradiction:

Improvestorage box rigidityVSAvoidrider ground reach

Core Design Contradiction:

StrengthVSEase of operation

Solution Approach 1:

The interlocking structure is segmented into multiple discrete interlocking portions positioned at specific locations on the storage box perimeter, rather than continuous interlocking along the entire front and side faces. This segmentation allows rigidity to be maintained at key structural points while leaving gaps that prevent excessive seat width expansion.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different portions of the storage box perimeter are treated differently regarding interlocking. The front face and specific side portions have interlocking portions to ensure rigidity, while other portions are left without interlocking to control seat width. This local differentiation resolves the contradiction between rigidity and ground reach.

Inventive Principle:

Principle #3Local quality

2Strength

If the storage box is interlocked extensively with the vehicle body cover, then the storage box rigidity is ensured, but the volumetric capacity decreases due to space occupation by interlocking structures

Engineering Contradiction:

Improvestorage box rigidityVSAvoidstorage box volumetric capacity

Core Design Contradiction:

StrengthVSVolume of stationary object

Solution Approach 1:

The interlocking structure is divided into multiple discrete portions rather than continuous interlocking, reducing the total space occupied by interlocking structures while maintaining rigidity at critical locations.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Instead of providing interlocking structures along the entire perimeter of the storage box, interlocking portions are provided only at specific critical locations where rigidity is most needed. This partial action approach ensures sufficient rigidity while minimizing space loss to interlocking structures.

Inventive Principle:

Principle #16Partial or excessive action

3Reliability

If the seat end portions are located more outward than the interlocking portions, then the storage box can be interlocked with the vehicle body cover, but the vehicle-widthwise size of the seat becomes larger

Engineering Contradiction:

Improveinterlocking connection reliabilityVSAvoidseat width

Core Design Contradiction:

ReliabilityVSLength of stationary object

Solution Approach 1:

The interlocking portions are strategically positioned at specific locations on the storage box perimeter, creating localized connection points that provide reliable interlocking without requiring the seat to extend outward across the entire width. This local quality approach maintains connection reliability while controlling overall seat width.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The interlocking connection is segmented into discrete portions at specific locations rather than continuous connection along the entire side, allowing the seat to maintain a compact width while still achieving reliable interlocking at the segmented connection points.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentEP2679477B1Motorcycle

Publication Date: 2014.12.17 YAMAHA MOTOR CO LTD

Figure 1
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Figure 3A

AI summary

A motorcycle (1) has a storage box (80) disposed above a main frame and an engine, a seat (50) disposed above the storage box (80), and a vehicle body cover (32) disposed vehicle-widthwise outward of the storage box (80). The seat (50) has a protruding portion disposed outward of the vehicle body cover (32). The storage box (80) has an opening at its top portion, a left wall (95) and a right wall (85) that define the opening, first interlocking portions (98, 88) connected respectively to the left wall (95) and the right wall (85), and second interlocking portions (89, 99) that are separate parts from the first interlocking portions (98, 88). The first interlocking portions (98, 88) extend outward of the vehicle body cover (32) over an upper edge of the vehicle body cover (32) and interlock with the upper edge of the vehicle body cover (32).