Cylinder Lock Mechanical Authorization System
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Solution Overview
Problem
Existing cylinder lock systems either lack the ability to issue locking authorizations in a simple mechanical manner or require complex electronic systems that rely on electrical energy, failing to provide flexible key functions for locking and authorization.
Innovation Solution
A cylinder lock system with a movable blocking element, adjustable by a first key, that switches between two housing pin arrangements, allowing different keys to lock, authorize, or operate the latch, with a mechanism to prevent incorrect key removal and ensure only authorized keys can change the blocking element's position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If electronic locking systems are used to grant authorization, then authorization control is achieved, but device complexity increases and power supply is required
Solution Approach 1:
The patent replaces electronic authorization systems with a purely mechanical solution. The cylinder lock uses a movable blocking element (adjusting ring) that can be positioned in different locations by the first key, mechanically determining which housing pin arrangements are active. This eliminates the need for electronic components, power supply, and complex coding systems while maintaining reliable authorization control through mechanical key positions.
2Reliability
If a service key is used to grant authorization, then authorization is granted, but the service key cannot lock the lock itself
Solution Approach 1:
The patent makes the first key universal by enabling it to perform multiple functions: it can lock the cylinder lock by interacting with the housing pins, and it can grant authorization by moving the blocking element to activate or deactivate housing pin arrangements. This single key handles both security functions without requiring separate service keys, enhancing versatility while maintaining reliable authorization control.
3Adaptability or versatility
If multiple independent housing pin arrangements are provided, then authorization flexibility is achieved, but device complexity increases
Solution Approach 1:
The patent introduces a blocking element (adjusting ring) as an intermediary mechanism that selectively activates or deactivates different housing pin arrangements. This single intermediary component controls access to multiple pin arrangements without requiring complex independent mechanisms for each, achieving authorization flexibility while keeping the overall system structure manageable and relatively simple.
4Ease of operation
If keys can be removed in any position, then ease of operation is improved, but security is compromised
Solution Approach 1:
The patent implements preliminary anti-action by using control slides that prevent key removal unless the cylinder core is in the correct position. The control slides physically block key extraction when the core is rotated to unauthorized positions, ensuring that keys can only be removed when properly aligned. This maintains security by preventing unauthorized key removal while allowing convenient operation when the key is correctly positioned.
Data Source
Figure 1
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AI summary
The invention relates to a system comprising a cylinder lock (1) and at least three keys, wherein a first key locks the cylinder lock (1) and is configured to grant a first locking authorization and at least one second locking authorization in the cylinder lock (1), a second key locks the cylinder lock (1) and cannot grant any locking authorization, and a third key locks the cylinder lock (1) when the first locking authorization is granted and does not lock it when the second locking authorization is granted, wherein the granting of the locking authorizations in the cylinder lock is effected mechanically by the first key. The invention further relates to a cylinder lock (1) and flat keys (2) for such a system.