Motorcycle Seat Airflow Layout for Buttocks Cooling

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Solution Overview

Problem

Existing straddle-type seats for motorcycles do not effectively blow air to the buttocks and back surface of the seated occupant, leading to stuffiness and temperature rise in these regions.

Innovation Solution

A straddle-type seat with an air blowing device and port positioned to blow air around the buttocks from behind, featuring a duct member with a wide opening and a standing wall portion, and a compactly disposed blower stabilized by a mounting member, which suppresses backflow and enhances air distribution.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If air blowing is limited to the vicinity of the thighs using an air guide duct, then the structure is simple and compact, but the underbutts get stuffy and the temperature from buttocks to lumbar rises

Engineering Contradiction:

Improveair guide duct structureVSAvoidstuffy sensation and temperature rise in underbutts region

Core Design Contradiction:

Device complexityVSObject-affected harmful factors

Solution Approach 1:

The patent divides the air blowing function into multiple regions by providing separate air blowing ports: one for the thigh region and another for the buttocks/lumbar region. This segmentation allows air to be delivered to previously unreachable areas without requiring a complex duct system, resolving the contradiction between structural simplicity and effective coverage.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent introduces a new spatial dimension for air delivery by positioning an air blowing port at the rear end of the seat to blow air toward the buttocks and lumbar region, complementing the front air blowing port for the thigh region. This multi-directional approach expands coverage without increasing duct complexity.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Object-affected harmful factors

If the duct opening portion width is increased to prevent blocking by buttocks, then air backflow is suppressed and lateral side air blowing is improved, but the device complexity increases

Engineering Contradiction:

Improveair backflow and blocked air blowingVSAvoidduct member structure

Core Design Contradiction:

Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The duct opening portion is designed with a curved shape where the central portion is positioned behind the outer portions in the width direction. This dynamic configuration allows the duct to adapt to the occupant's body position, preventing blocking by buttocks while maintaining structural simplicity and avoiding air backflow.

Inventive Principle:

Principle #15Dynamics

3Device complexity

If the air blowing device is disposed on the back surface side of the seat bottom plate at a position avoiding the seating portion, then the device can be efficiently and compactly disposed, but the mounting position becomes constrained

Engineering Contradiction:

Improveair blowing device arrangementVSAvoidmounting position flexibility

Core Design Contradiction:

Device complexityVSAdaptability or versatility

Solution Approach 1:

The patent separates the air blowing device from the seating portion by disposing it on the back surface side of the seat bottom plate. This spatial segmentation allows the device to be compactly arranged without interfering with the seating area, while the mounting member provides flexible attachment to the vehicle body.

Inventive Principle:

Principle #1Segmentation

4Reliability

If a mounting member is provided to abut the vehicle body for stabilizing vibration, then air blowing stability is improved, but the assembly complexity increases

Engineering Contradiction:

Improveair blowing stabilityVSAvoidmounting structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The mounting member is integrated into the seat structure and serves dual purposes: it stabilizes the air blowing device against vibration and provides the mounting interface to the vehicle body. This merging of functions improves reliability without significantly increasing assembly complexity.

Inventive Principle:

Principle #5Merging (Combining)

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

The seat effectively prevents stuffiness by blowing air to the underbutts, stabilizes air flow, and improves comfort through efficient air distribution and temperature adjustment, while being easily assembled and resistant to foreign matter entry.

Implementation Method 1

an air blowing device 30; and an air blowing port K through which air blown from the air blowing device passes

Methodology Applied

Scientific EffectAir flow:

Data Source

PatentUS20250206398A1Straddle-type seat

Publication Date: 2025.06.26 TS TECH CO LTD

AI summary

There is provided a straddle-type seat capable of improving the comfort of a seated occupant by blowing air to a region of buttocks of the seated occupant. A motorcycle seat on which a seated occupant is seated in a straddling state includes a blower and an air blowing port through which air blown from the blower passes. The air blowing port is provided at a position facing buttocks of the seated occupant. Specifically, the motorcycle seat includes a front seating portion and a non-seating portion provided at a rear end of the front seating portion. The air blowing port is provided at a lower portion of the non-seating portion.