Bicycle Display Device for Fine Adjustment Verification
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Solution Overview
Problem
Conventional bicycle display devices fail to accurately indicate the amount of adjustment during fine adjustments of transmission positions, leading to potential misoperation and time loss, especially during racing, due to the difficulty in verifying the chain guide position visually while riding.
Innovation Solution
A bicycle display device with a mounting part and a display element that shows a fine adjustment display screen, allowing riders to accurately ascertain the adjustment amount and direction, and switch between adjustment and transmission position displays, mounted on a brake lever bracket for easy visibility and operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the operation part for entering fine adjustment mode is placed near the hand that performs gear shifting operation (on the handlebar), then it is easy to operate, but there is concern of mistakenly entering fine adjustment mode by misoperation when shifting gears
Solution Approach 1:
The operation part is divided into two distinct functional areas: a first operation part for gear shifting and a second operation part for entering fine adjustment mode. This spatial segmentation prevents accidental activation of fine adjustment mode during normal gear shifting operations, as the rider must intentionally reach for the differently positioned second operation part.
Solution Approach 2:
The patent introduces a mode setting switch as an intermediary mechanism between the rider's intent and the fine adjustment function. This switch serves as a deliberate activation step that prevents direct, accidental triggering of fine adjustment mode during gear shifting, requiring a conscious decision to enter the adjustment mode.
2Ease of operation
If fine adjustment mode is entered while operating the bicycle, then adjustment can be performed on the fly, but the rider can not perform the gear shifting operation, causing time loss particularly during a race
Solution Approach 1:
The system dynamically switches between two operational modes: normal gear shifting mode and fine adjustment mode. When fine adjustment mode is activated, the system temporarily disables gear shifting operations and displays a prompt to the rider. Once the rider responds to the prompt, the system automatically returns to normal gear shifting mode, allowing seamless transition between functions.
Solution Approach 2:
The patent implements a feedback mechanism where the display device shows a specific prompt when fine adjustment mode is active, informing the rider that gear shifting is temporarily unavailable. After the rider completes the adjustment or responds to the prompt, the system provides feedback by returning to normal operation mode, ensuring the rider is aware of the system state and can resume racing without prolonged time loss.
3Device complexity
If the chain guide position is not directly verifiable by visual inspection while riding, then the display device is simple, but the amount of adjustment can not be correctly perceived leading to considerable time for fine adjustment operation
Solution Approach 1:
The patent replaces direct visual inspection of the chain guide position (mechanical observation) with an electronic display system that shows the adjustment amount numerically or graphically. This substitution allows the rider to perceive adjustment information without physically observing the chain guide, enabling accurate monitoring of fine adjustment progress while riding.
Solution Approach 2:
The display device serves as an intermediary between the chain guide position and the rider's perception. Instead of requiring direct visual verification of the chain guide's physical position, the display intermediary translates this information into readable adjustment amount indicators, allowing the rider to understand the adjustment status without direct observation.
Data Source
AI summary
A bicycle display device is configured to accurately verify an amount of adjustment occurring when performing a fine adjustment of a transmission position of a transmission device. The bicycle display device is mounted on a bicycle, and includes a mounting part and a display element. The mounting part is attachable to a brake bracket of the bicycle. The display element is supported by the mounting part, and is configured and arranged to display a fine adjustment display screen for indicating the amount of adjustment when adjusting the transmission position of a transmission device such as a rear derailleur.