Bicycle Gear Shift Indicator with Continuous Operation Notification

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Solution Overview

Problem

Current bicycle gear shift indicators lack an effective way to notify riders of continuous shifting operations, leading to potential confusion and inefficient gear changes.

Innovation Solution

A bicycle gear shift indicator system comprising a shift sensor and a controller that detects shifting operations and generates notifications through a notification device, such as sounds, displays, and vibrations, based on the continuous operation time of the shifter, allowing riders to seamlessly manage gear shifts.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a traditional gear shift indicator is used, then the structure is simple, but the rider cannot be effectively notified of continuous shifting operations leading to confusion

Engineering Contradiction:
Improvenotification accuracyVSAvoidsystem complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The notification system is segmented into multiple independent components: a shift sensor for detecting shifting operations, a controller for processing shift patterns, and a notification device for providing feedback. This segmentation allows each component to perform its specific function reliably while keeping the overall system manageable in complexity.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The system implements feedback by providing real-time notifications to the rider about gear shifting operations. The notification device delivers auditory or visual feedback that confirms the shifting action, allowing the rider to understand the current gear state without visual distraction, thereby improving notification accuracy and reliability.

Inventive Principle:
Principle #23Feedback

2Productivity

If continuous shifting operations are not notified, then the system is simple, but shifting efficiency decreases and gear changes become confusing

Engineering Contradiction:
Improveshifting efficiencyVSAvoidtime for gear changes
Core Design Contradiction:
ProductivityVSLoss of time

Solution Approach 1:

The notification system operates continuously during shifting operations, providing uninterrupted feedback to the rider. The controller monitors shift operations in real-time and maintains continuous notification output, ensuring the rider constantly understands the gear state without interruption or delay, thereby improving shifting efficiency.

Inventive Principle:
Principle #20Continuity of useful action

Solution Approach 2:

The system replaces mechanical indicator mechanisms with electronic sensing and notification components. The shift sensor electronically detects shifting operations and the controller processes this data to generate notifications, eliminating the need for complex mechanical indicators and reducing the time required for gear changes through faster electronic response.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Measurement precision

If sequential shifts are not differentiated, then the control logic is simple, but rider confusion increases and shifting accuracy decreases

Engineering Contradiction:
Improveshift detection accuracyVSAvoidcontrol logic complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The controller performs preliminary analysis of shift patterns by monitoring and storing shift operations before generating notifications. It pre-processes the shift data to identify sequential patterns, allowing it to differentiate between sequential and non-sequential shifts with high accuracy while maintaining manageable control logic through structured data processing.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The notification system dynamically adapts its output based on the detected shift pattern. When sequential shifts are detected, the system provides differentiated notifications that reflect the continuous nature of the shifting operation, improving shift detection accuracy by responding differently to various shifting scenarios while the controller dynamically adjusts its logic based on real-time input.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS8723659B2Bicycle gear shift indicator
Publication Date: 2014.05.13 SHIMANO INC
  • US8723659B2 patent drawing
  • US8723659B2 patent drawing
  • US8723659B2 patent drawing

AI summary

A bicycle gear shift indicator comprises a shift sensor and a controller. The shift sensor configured detects a shifting operation of a shifter. The controller is operatively coupled to the shift sensor to determine a continuous shifting operation of the shifter based on a gear shift selection signal from the shift sensor. Furthermore, the controller is configured to operate a notification device that generates a shift notification corresponding to one or more gear shifts based on a continuous operation time of the shifter.