Bicycle Anti-theft Fork Locking System with Remote Actuation

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Solution Overview

Problem

Existing anti-theft systems for bicycles, such as key-based and manual code locks, are not suitable for shared cycling systems as they lack personalized and simplified locking/unlocking mechanisms, and often require modifications to the bike frame and handlebars.

Innovation Solution

A bicycle with a fork lock system that includes a fork lock member and an anti-theft system with a locking member that can be remotely controlled, allowing for secure locking and unlocking using a secret code or RFID, ensuring only authorized users can access the bike.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a key-operated lock is used, then the anti-theft function is provided, but the key could be lost and it is not compatible with bike-sharing systems

Engineering Contradiction:
Improveanti-theft functionVSAvoidlocking/unlocking convenience
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The patent replaces the mechanical key-operated locking system with an electronic control system. The electronic control unit receives unlocking signals and automatically actuates the locking device via an actuator, eliminating the need for physical keys and enabling remote operation through communication interfaces.

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

Solution Approach 2:

The locking device is designed to automatically lock the fork when the bicycle is stolen or left unattended. The system self-activates without requiring user intervention, and the electronic control unit manages the locking/unlocking process automatically based on received signals.

Inventive Principle:
Principle #25Self-service

2Reliability

If a manual code lock is used, then the locking function is provided, but the user must remember the code and it is not advantageous for cycle-sharing systems

Engineering Contradiction:
Improvelocking functionVSAvoidcode memory requirement
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent replaces the manual code-based mechanical locking system with an electronic control system that processes unlocking signals through a communication interface. This eliminates the need for users to remember codes while maintaining secure locking functionality through electronic authentication.

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

3Reliability

If existing anti-theft locks are installed, then the locking function is provided, but a hole must be made in the frame and handlebars

Engineering Contradiction:
Improvelocking functionVSAvoidframe modification requirement
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The patent separates the locking function from the frame structure by using a detachable locking device that engages with the fork rather than requiring permanent modifications to the frame. The locking device can be independently installed and removed without altering the bicycle's structural integrity.

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 secure, personalized, and simplified locking and unlocking of bicycles in shared systems, preventing unauthorized access while maintaining the integrity of the bike's structure.

Implementation Method 1

The locking element is elastically forced towards the first position

Methodology Applied
Scientific EffectElastic force: Elasticity

Implementation Method 2

a bellows controlled by the actuator, an elastically pivoting cam

Methodology Applied
Scientific EffectBellows expansion/contraction:

Data Source

PatentEP3584146B1Cycle provided with an Anti-theft fork locking system and automatic system for providing such a cycle
Publication Date: 2021.05.05 JCDECAUX SA
  • EP3584146B1 patent drawingFigure 1
  • EP3584146B1 patent drawingFigure 2
  • EP3584146B1 patent drawingFigure 3

AI summary

A bicycle (12) comprising an anti-theft lock (100) including a fork locking member (104) fixed to the fork (20) of the bicycle (12) having an opening (106), and an anti-theft system (102) mounted to the frame (18) of the bicycle (12). The anti-theft system (102) has a locking member (110) movable between a first position where the locking member (110) is separated from the opening (106) of the fork locking member (104) and the anti-theft lock (100) is in the unlocked position, and a second position where the locking member (110) cooperates with the opening (106) of the fork locking member (104) and the anti-theft lock (100) is in the locked position. When the anti-theft lock (100) is in the locked position, the fork (20) is locked in a rotated position of the front wheel (16).