Magnetic Clicking Switch for Bicycle Control Device

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Solution Overview

Problem

Existing bicycle control devices do not adequately enhance the tactile and acoustic feedback provided by their clicking mechanisms, leading to a need for improved wear resistance and reduced maintenance.

Innovation Solution

Incorporating a magnetic clicking switch with a first fixed element and a second movable element, actuated by a manual actuation member, which moves between rest and operating positions, providing increased tactile and acoustic feedback, and featuring a snapping device with a spring mechanism for enhanced durability and reduced maintenance needs.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a conventional mechanical clicking mechanism is used, then the device provides basic tactile feedback, but the wear resistance is insufficient and maintenance requirements are high

Engineering Contradiction:
Improvewear resistanceVSAvoidmaintenance requirements
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The patent replaces the conventional mechanical clicking mechanism with a magnetic clicking switch. The magnetic mechanism uses magnetic attraction and repulsion forces between a magnet and a ferromagnetic element to produce the clicking action, eliminating mechanical contact and friction. This substitution dramatically improves wear resistance and reduces maintenance requirements while maintaining the tactile feedback function.

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

Solution Approach 2:

The patent introduces a magnetic field as an intermediary between the actuation force and the clicking action. Instead of direct mechanical contact, the magnetic field mediates the interaction between the movable element and the fixed element, enabling the clicking mechanism to operate without mechanical wear while still providing tactile feedback to the user.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Reliability

If a magnetic clicking switch is used, then wear resistance is improved, but the device complexity increases

Engineering Contradiction:
Improvewear resistanceVSAvoidstructure complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent extracts the clicking function from the broader mechanical actuation system and implements it as a separate magnetic clicking switch module. This modular approach allows the magnetic mechanism to be integrated into existing control devices without requiring complete redesign of the entire system, thereby limiting the increase in overall device complexity.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The magnetic clicking switch is designed to serve multiple functions: providing tactile feedback, generating audible clicking sounds, and indicating operational status. By consolidating these functions into a single component, the patent reduces the need for additional separate mechanisms, thereby limiting the increase in device complexity.

Inventive Principle:
Principle #6Universality (Multi-functionality)

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 magnetic clicking switch enhances tactile and acoustic feedback while offering a more wear-resistant and low-maintenance solution compared to conventional mechanical switches, ensuring reliable operation and improved user experience.

Implementation Method 1

The clicking mechanism comprises a magnetic clicking switch having a first element (42) that is fixed with respect to the body (11), and a second element (44) that is movable with respect to the first element (42)

Methodology Applied
Scientific EffectMagnetic attraction and repulsion: Magnetism

Data Source

PatentUS10676156B2Bicycle control device
Publication Date: 2020.06.09 CAMPAGNOLO SRL
  • US10676156B2 patent drawing
  • US10676156B2 patent drawing
  • US10676156B2 patent drawing

AI summary

A bicycle control device for issuing at least one command to at least one bicycle equipment comprises a body configured to be mounted on the bicycle, at least one manual actuation member associated with the body, and a clicking mechanism. The clicking mechanism comprises a magnetic clicking switch having a first element that is fixed with respect to the body, and a second element that is movable with respect to the first element and actuatable by said at least one manual actuation member when said manual actuation member issues said command.