Motorcycle Passenger Backrest With Nested Pivot Carrier

Solution Overview

Problem

Existing motorcycle passenger backrests lack the functionality of incorporating a fold-down carrier without compromising aesthetics or space, as they either sacrifice appearance or require additional bulky components.

Innovation Solution

A backrest frame with a recessed space that houses a pivotally mounted carrier frame, allowing it to be hidden when not in use, providing a seamless appearance and dual functionality as both a backrest and carrier.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a fold-down carrier is added to the backrest, then cargo carrying capability is improved, but device complexity and visual bulk increase

Engineering Contradiction:

Improvecargo carrying capabilityVSAvoidstructural complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The carrier frame is nested within the backrest frame structure, with the carrier frame positioned inside the perimeter footprint of the backrest frame. When in the stowed position, the carrier frame is substantially contained within the backrest frame, creating a compact integrated structure that reduces visual bulk while maintaining cargo carrying capability.

Inventive Principle:

Principle #7Nested doll (Nesting)

Solution Approach 2:

The carrier frame is made movable relative to the backrest frame through pivotal connection at a first leg of the carrier frame to the backrest frame. This dynamic configuration allows the carrier to transition between a stowed position (flush with backrest outer surface) and a deployed cargo-carrying position, enabling adaptability without permanent structural complexity.

Inventive Principle:

Principle #15Dynamics

2Adaptability or versatility

If a fold-down carrier is added to the backrest, then cargo carrying capability is improved, but visible seams and aesthetic appearance worsen

Engineering Contradiction:

Improvecargo carrying capabilityVSAvoidaesthetic appearance

Core Design Contradiction:

Adaptability or versatilityVSShape

Solution Approach 1:

The carrier frame is nested within the backrest frame structure, with the carrier frame positioned inside the perimeter footprint of the backrest frame. When in the stowed position, the carrier frame is substantially contained within the backrest frame, creating a compact integrated structure that reduces visual bulk while maintaining cargo carrying capability.

Inventive Principle:

Principle #7Nested doll (Nesting)

Solution Approach 2:

The outer surface of the carrier frame is configured to be substantially coplanar with the outer surface of the backrest frame when the carrier is in the stowed position. This merging of surfaces creates a seamless appearance, eliminating visible seams and maintaining aesthetic appearance while the carrier remains integrated into the backrest structure.

Inventive Principle:

Principle #5Merging (Combining)

3Adaptability or versatility

If the carrier frame is made movable, then cargo carrying capability is improved, but structural stability worsens

Engineering Contradiction:

Improvecargo carrying capabilityVSAvoidstructural stability

Core Design Contradiction:

Adaptability or versatilityVSStability of the object's composition

Solution Approach 1:

The carrier frame is made movable relative to the backrest frame through pivotal connection at a first leg of the carrier frame to the backrest frame. This dynamic configuration allows the carrier to transition between a stowed position (flush with backrest outer surface) and a deployed cargo-carrying position, enabling adaptability without permanent structural complexity.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The carrier frame is divided into separate legs (first leg through fourth leg) that can be independently positioned. The first leg is pivotally connected to the backrest frame, allowing movement, while the second and third legs are spaced apart to define a cargo-carrying area. This segmentation enables controlled movement while maintaining structural integrity through the distributed leg structure.

Inventive Principle:

Principle #1Segmentation

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

Enables the motorcycle to offer both passenger support and cargo carrying capabilities without visible seams or bulk, enhancing user experience through integrated design.

Implementation Method 1

The carrier frame is pivotally mounted within the recessed space and is movable between a stored position, with the carrier frame in contact with the base surface of the backrest frame, and a carrying position, with the carrier frame pivoted away from the base surface.

Methodology Applied

Scientific EffectPivoting: Hinge

Data Source

PatentUS8459517B2Motorcycle passenger backrest

Publication Date: 2013.06.11 TURN 14 DISTRIBUTION INC

AI summary

A motorcycle passenger backrest has a generally U-shaped or V-shaped backrest frame that is configured for connection to a mounting bracket on the motorcycle. The inner surface of the backrest frame is configured with a recessed space having a base surface and a side surface that extends from the base surface at an angle. A carrier frame configured to fit within the recessed space is pivotally mounted to each leg of the backrest frame. The carrier frame is movable between an up, stored position, with the carrier frame in contact with the base surface of the recessed space, and a down, carrier position, with the carrier frame pivoted away from the backrest frame.