Mortise Lock Mechanical Emergency Actuation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing electronic door locks may fail to operate due to energy supply issues or defects, compromising security since the electronics and energy sources are often located inside the door, making them vulnerable to external manipulation.
Innovation Solution
Incorporating a mechanical emergency lock that can be actuated with a key, allowing independent operation of the lock's sections, providing an alternative mechanism to open the lock even when the electronic locking device is non-functional due to energy shortages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the electronic locking device is used to control the lock, then the convenience and security of the locking system are improved, but the vulnerability to energy supply issues and defects increases
Solution Approach 1:
The locking system is segmented into two independent parts: an electronic locking device for normal operation and a mechanical emergency lock for backup. The mechanical emergency lock includes a separate key cylinder and drive mechanism that can independently actuate the locking bolt without relying on the electronic system's power supply or control functions.
Solution Approach 2:
The mechanical emergency lock is integrated into the lock body with specific local features: a key cylinder recess in the handle, a drive gear that meshes with the locking bolt's gear, and a dedicated winding mechanism. These localized mechanical components provide reliable backup functionality at the specific point where electronic failure might occur.
2Object-affected harmful factors
If the electronics and energy sources are arranged inside the door, then the security against external manipulation is improved, but the risk of internal defect compromising the lock increases
Solution Approach 1:
The locking system is divided into electronic components housed inside the door (protected from external tampering) and a mechanical emergency lock with external key access. This segmentation allows the electronic system to remain secure internally while providing an independent external mechanical interface for emergency operation.
Solution Approach 2:
The mechanical emergency lock serves as an intermediary mechanism between the external environment and the internal electronic system. It provides a backup control path that bypasses the electronic components, allowing external key operation to directly actuate the locking bolt through mechanical means when the electronic system fails.
3Reliability
If a mechanical emergency lock is added to the electronic locking system, then the reliability and security are improved, but the device complexity increases
Solution Approach 1:
The mechanical emergency lock components are merged with the existing electronic locking structure. The key cylinder is integrated into the handle assembly, the drive gear meshes with the existing locking bolt gear, and the winding mechanism combines with the spring-loaded return mechanism. This merging reduces overall complexity compared to having completely separate systems.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The invention relates to a lock, especially a mortise lock for a door, comprising a closing cylinder (2) that can be inserted especially in a door leaf, and an electronically controlled closing device, which has, e.g., a shaft (3) comprising two sections (4, 5) with holds on both ends, preferably in the form of knobs or handles. The sections (4, 5) of the shaft (3) can be functionally connected to each other via a coupling once an authorization code is input into the electronic closing device, especially in a wireless manner, for example by radio. Starting from the prior art known from DE 102 25 490 A1, the aim of the invention is to provide a lock which has a higher operational safety even when the electronic closing device fails to unlock the lock for reasons of safety due to a defect and/or insufficient energy supply. For this purpose, the closing cylinder has a mechanical emergency lock (6) which can be actuated by means of a mechanical key (10) and which can be used to establish or undo a functional connection, especially between the sections (4, 5) of the shaft (3) independent of the electronically controlled closing device.