Detachable E-Bike UI Cradle Lock for Replaceable Operation Member

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Solution Overview

Problem

Conventional electric assisted bicycle displays are prone to malfunction when an unintended external force acts on the operating portion, requiring replacement of the entire cradle even if other parts are functional, due to the integral formation of the operating mechanism with the cradle.

Innovation Solution

A user interface assembly where the operation member, including an operating portion and a second engaging portion, is detachable from either the UI device or the cradle, allowing for replacement of only the operation member when malfunctions occur, enabling smooth detachment of the UI device from the cradle and simplifying the structure by avoiding the need for electrical contacts on the operation member.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If the operating portion is integrally formed with the cradle, then the structure is simplified, but the reliability deteriorates because the entire cradle must be replaced when the operating portion malfunctions

Engineering Contradiction:
Improvestructure complexityVSAvoidoperational reliability
Core Design Contradiction:
Device complexityVSReliability

Solution Approach 1:

The operating portion is separated from the cradle and formed as a detachable operation member. This segmentation allows the operating portion to be replaced independently when malfunctioning, improving reliability without significantly increasing overall structural complexity. The operation member can be attached and detached from the cradle, enabling selective replacement of only the faulty component.

Inventive Principle:
Principle #1Segmentation

2Ease of manufacture

If the operating portion is integrally formed with the cradle, then manufacturing is easier, but repairability deteriorates because the entire cradle must be replaced even when only the operating portion malfunctions

Engineering Contradiction:
Improvemanufacturing easeVSAvoidrepairability
Core Design Contradiction:
Ease of manufactureVSEase of repair

Solution Approach 1:

The operation member is designed as a separate detachable component from the cradle. This segmentation enables independent replacement of the operating portion when it malfunctions, significantly improving repairability. The cradle can be reused and only the faulty operation member needs to be replaced, reducing waste and manufacturing costs for replacement units.

Inventive Principle:
Principle #1Segmentation

3Ease of repair

If the operation member is made detachable, then repairability is improved, but device complexity increases due to the need for engagement and disengagement mechanisms

Engineering Contradiction:
ImproverepairabilityVSAvoidstructural complexity
Core Design Contradiction:
Ease of repairVSDevice complexity

Solution Approach 1:

The operation member is designed as a detachable component with engagement portions that connect to the cradle. This segmentation improves repairability while controlling complexity through simple engagement mechanisms.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The engagement portions are integrated into both the operation member and cradle structures, merging the attachment function into the existing components. This combining approach enables detachability without adding separate complex attachment mechanisms, thus improving repairability while minimizing increases in device complexity.

Inventive Principle:
Principle #5Merging (Combining)

4Ease of operation

If the operating portion is made separate and detachable, then ease of operation is improved for one-handed use, but device complexity increases due to additional engagement mechanisms

Engineering Contradiction:
Improveoperational convenienceVSAvoidstructural complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The operation member is separated from the cradle as a detachable component, enabling users to easily hold the UI device with one hand while operating the operating portion with the other hand. This segmentation improves ease of operation despite the added engagement mechanisms.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The engagement mechanisms are integrated into the existing structures of the operation member and cradle, combining the attachment function with the operational components. This merging approach enables improved ease of operation while minimizing the increase in device 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

This solution allows continued use of the UI device and cradle by replacing only the operation member, reducing waste and simplifying the detachment process, while maintaining electrical connectivity through contacts on the UI device and cradle.

Implementation Method 1

The operating portion for separating the display or the cradle has a leaf spring portion. When the user operates the operating portion, the leaf spring portion is deformed and the hook portion is disengaged.

Methodology Applied
Scientific EffectElasticity: Elasticity

Data Source

PatentUS20230264780A1User interface assembly of vehicle, drive system of vehicle, and electric assisted bicycle
Publication Date: 2023.08.24 YAMAHA MOTOR CO LTD
  • US20230264780A1 patent drawing
  • US20230264780A1 patent drawing
  • US20230264780A1 patent drawing

AI summary

A UI assembly includes a UI device, a cradle, an operation member having an operating portion for a user to operate. A first engaging portion is formed on the cradle. The operation member is formed separately from and detachable from the UI device. The operation member includes a second engaging portion. The second engaging portion is engaged with the first engaging portion 61a to prevent the UI device from separating from the cradle, and is movable with the operating portion so that the first engaging portion and the second engaging portion are disengaged from each other. This provides a user interface (UI) assembly that allows a user to continuously use the cradle and the user interface device even if an unintended external force acts on the operating portion.