Anti-vibration Door Lock with Inertial Mass Sensor
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Solution Overview
Problem
Existing door locks are vulnerable to accidental unlocking due to incidental or intentional vibrations, which can disrupt the lever springs and cause the locking mechanism to malfunction, allowing unauthorized access.
Innovation Solution
A door lock with an integrated anti-vibration security system that includes a vibration sensing mechanism, utilizing a component with free movement, such as a mass, to detect vibrations and activate a second locking system that locks the short or long lever, preventing the door from being opened by vibrations, and is designed to be adaptable to existing lock designs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a vibration sensing system is added to detect vibrations and activate a second locking system, then the reliability of the door lock against vibration-induced unlocking is improved, but the device complexity increases
Solution Approach 1:
A vibration sensing system acts as an intermediary between the external vibration environment and the second locking system. The sensor detects vibrations and triggers the second locking mechanism through a control circuit, mediating the response to vibrational threats without requiring direct mechanical coupling between the lever and locking components.
Solution Approach 2:
The patent replaces purely mechanical vibration resistance with an electro-mechanical system. Instead of relying on mechanical pre-loading or friction to resist vibration, the system uses electronic sensors and control circuits to detect and respond to vibrations, activating electromagnetic or electro-mechanical locking components.
2Reliability
If a second locking system is activated continuously to prevent vibration-induced unlocking, then the reliability against forced entry is improved, but the energy consumption increases
Solution Approach 1:
The second locking system operates periodically rather than continuously. It remains inactive during normal operation and only activates when the vibration sensor detects threshold-exceeding vibrations. This periodic activation pattern maintains security during threats while minimizing energy consumption during normal periods.
Solution Approach 2:
The vibration sensing system automatically detects and responds to threats without requiring external intervention. The system self-monitors the vibration environment and autonomously activates the second locking mechanism when needed, eliminating the need for continuous external control or monitoring.
3Volume of moving object
If the antivibration system is integrated inside the main body attached to the coil body, then the compactness is improved, but the adaptability to existing door locks deteriorates
Solution Approach 1:
The antivibration system is segmented into functionally independent modules: a vibration sensing system, a control circuit, and a second locking system. This modular segmentation allows each component to be independently sized and positioned, enabling adaptation to various existing lock configurations without requiring complete integration into a single compact unit.
Solution Approach 2:
The second locking system is designed with universal applicability to multiple existing lock types. It can lock the latch, the short lever, or the long lever depending on the specific lock configuration, making it adaptable to different door lock designs while maintaining a consistent control architecture.
4Ease of operation
If a blocking mechanism is added to prevent undesired blocking during normal opening, then the ease of operation is improved, but the device complexity increases
Solution Approach 1:
The second locking system dynamically adjusts its state based on operational context. During normal opening operations, the system remains disengaged or in a permissive state, allowing free movement of levers. When vibrations are detected, it transitions to an active locking state, providing dynamic adaptability without requiring complex mechanical blocking mechanisms.
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
Effectively prevents accidental unlocking and forced entry by ensuring the door remains locked even when subjected to vibrations, maintaining the integrity of the locking mechanism without interfering with normal operation.
Implementation Method 1
comprising a component with freedom of movement to detect the vibration
Data Source
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AI summary
Door lock which comprises a latch and a latch-locking system which comprises a short lever and a long lever which maintain their resting position through the action of their respective short lever spring and long lever spring, enabling the unlocking of the latch through the engagement of the long lever and enabling the unlocking of the long lever through the engagement of the short lever, and which additionally comprises an anti-vibration security system, comprising said anti-vibration security system: - one or more masses with freedom of movement, - a latch-locking component, - a locking component for one or more latch-locking components, in which the movement of the mass activates the locking component.