Self-Locking Motorised Three-Point Lock With Tamper Resistance
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Solution Overview
Problem
Existing motorised locks require manual effort for closing and are vulnerable to tampering and unauthorized opening due to the use of load shafts and lack of self-locking mechanisms.
Innovation Solution
A self-locking mechanical-motorised three-point lock with a central assembly and satellite transmissions, featuring a self-locking shaft and inhibiting system, which allows for frictionless closing and secure locking without load shafts, preventing manual or external tampering.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If load shafts are used for closing operation, then closing force can be applied, but manual effort is required and security is reduced
Solution Approach 1:
The patent replaces the traditional mechanical load shaft system with an electrical motor system. The motor drives the deadbolts through a transmission mechanism, eliminating the need for manual loading of the load shaft. This substitution of mechanical effort with electrical actuation resolves the contradiction by providing closing force without requiring manual operation.
Solution Approach 2:
The lock system incorporates self-locking deadbolts that automatically secure themselves in the closed position without requiring continuous manual pressure or a separate locking mechanism. The deadbolts engage with the door frame and lock themselves, providing both closing force and security automatically once activated, thus eliminating the need for continuous manual effort.
2Ease of operation
If traditional mechanical locks are used, then manual opening is possible, but vulnerability to tampering increases
Solution Approach 1:
The patent replaces the traditional key-cylinder mechanical opening mechanism with an electrical motor system. The motor is controlled by electronic signals, which can be provided by various means (cards, codes, biometrics, etc.), thereby eliminating the vulnerability of traditional mechanical cylinders to bumping, impressioning, and breaking attacks while maintaining convenient opening operation.
Solution Approach 2:
The patent introduces an intermediary control system between the user and the locking mechanism. Instead of direct mechanical key operation, an electronic control system mediates the opening process, providing enhanced security against tampering while maintaining ease of operation through various authentication methods.
3Reliability
If self-locking mechanism is added, then security is enhanced, but device complexity increases
Solution Approach 1:
The patent merges the locking and self-locking functions into a single integrated deadbolt mechanism. The deadbolt serves both as the primary locking element and incorporates self-locking features that automatically secure it in place. This consolidation of functions reduces the number of separate components and simplifies the overall device structure while maintaining enhanced security.
Solution Approach 2:
The deadbolt mechanism is designed to perform multiple functions: primary locking, self-locking, and resistance to forced entry. By making the deadbolt a multi-functional component rather than relying on separate mechanisms for each function, the patent reduces device complexity while achieving enhanced security against unauthorized opening.
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
Minimizes closing effort, enhances security by preventing unauthorized opening, and ensures durable, tamper-proof operation with electrical and mechanical controls.
Implementation Method 1
the lock incorporates a coil which, if energised, inhibits manual opening by the key-cylinder... the system has a coil that attracts an inhibiting lever
Data Source
Figure 1
Figure 2
Figure 3A
AI summary
The invention relates to a three-point lock with deadbolts and self-locking on the deadbolts with a central assembly (1), an upper assembly (1.1) and a lower assembly (1.2), wherein each assembly comprises a deadbolt (4, 4.1, 4.2) and wherein the central assembly (1) comprises a mechanical central transmission (16) and the upper and lower assemblies (1.1, 1.2) comprise satellite transmissions (7.1, 7.2) linked to the mechanical central transmission (16) via an upper espagnolette bolt (3.1) and a lower espagnolette bolt (3.2), so that when the mechanical central transmission (16) is moved in the closing direction, it moves the upper and lower satellite transmissions (7.1, 7.2) in the same direction, all the deadbolts (4, 4.1, 4.2) moving to the closed position. At least the central assembly (1) comprises a self-locking system.