Seat Rail Side Cover Layout for Foot Grounding and Dust Resistance

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing straddle-type vehicle designs face issues with foot grounding property and dust resistance due to the positioning of side covers, which affect the vehicle's width dimension and air intake efficiency.

Innovation Solution

The side covers are fixed to the seat rails from the inner side in the vehicle width direction, with an upward expansion portion to prevent dust entry and ensure a wide space for air intake, improving foot grounding and dust resistance while maintaining air intake efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Use of energy by moving object

If the side cover is attached from the outer side in the vehicle width direction, then the air intake efficiency is improved, but the foot grounding property deteriorates and the vehicle width increases

Engineering Contradiction:

Improveair intake efficiencyVSAvoidfoot grounding property

Core Design Contradiction:

Use of energy by moving objectVSEase of operation

Solution Approach 1:

The side cover attachment direction is inverted from the conventional outer side attachment to inner side attachment relative to the seat rail. This inversion allows the side cover to be positioned inside the vehicle width direction, reducing the overall vehicle width and improving foot grounding property while still maintaining adequate air intake space through strategic positioning below the driver seating surface.

Inventive Principle:

Principle #13The other way round (Inversion)

2Use of energy by moving object

If the side cover is attached from the outer side in the vehicle width direction, then the air intake efficiency is improved, but the dust resistance deteriorates due to large gap between seat rail and side cover

Engineering Contradiction:

Improveair intake efficiencyVSAvoiddust resistance

Core Design Contradiction:

Use of energy by moving objectVSObject-affected harmful factors

Solution Approach 1:

The attachment orientation is inverted from outer side to inner side, which repositions the gap between the seat rail and side cover to the outer side of the vehicle. This inversion effectively shields the critical inner region from dust intrusion while preserving air intake functionality through the exposed outer portion of the side cover.

Inventive Principle:

Principle #13The other way round (Inversion)

Solution Approach 2:

The side cover is nested within the vehicle body structure by attaching it from the inner side of the seat rail. This nesting arrangement allows the side cover to be positioned inside the overall vehicle envelope, reducing external dimensions while maintaining functional clearance for air intake and protecting internal components from dust through the repositioned gap location.

Inventive Principle:

Principle #7Nested doll (Nesting)

3Ease of operation

If the side cover is attached from the inner side in the vehicle width direction, then the foot grounding property and dust resistance are improved, but the air intake efficiency may be compromised

Engineering Contradiction:

Improvefoot grounding propertyVSAvoidair intake efficiency

Core Design Contradiction:

Ease of operationVSUse of energy by moving object

Solution Approach 1:

The side cover structure implements local quality differentiation by having an inner attachment portion that contacts the seat rail from the inner side (improving foot grounding and reducing vehicle width) and an outer exposed portion that extends outward (maintaining air intake efficiency). This localized functional differentiation resolves the contradiction by optimizing different regions for different purposes.

Inventive Principle:

Principle #3Local quality

Data Source

PatentEP4335733B1Side cover structure

Publication Date: 2026.05.20 SUZUKI MOTOR CORP

Figure 1
Figure 2
Figure 3

AI summary

A side cover structure includes a main frame (11) extending rearward from a head pipe, a seat rail (21) positioned behind the main frame (11), a side cover (41) fixed to the seat rail (21) from an inner side in a vehicle width direction. Below a driver seating surface (32) of a seat (31) on the seat rail (21), the side cover (41) is exposed, to an outer side in the vehicle width direction, from an opening (26) formed by rail members (22, 23, 24, 25) included in the seat rail (21).