Lock Linkage Geometry That Resists Bumping and Vibration
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Solution Overview
Problem
Existing lock devices are vulnerable to manipulation through forces, torques, and vibrations, leading to unauthorized access.
Innovation Solution
A lock arrangement with a blocking element controlled by a control element via an intermediate element, configured such that when the control element is in a locked position, the first pivot is on one side of a plane including the control axis, and when unlocked, it moves to the opposite side, providing strong resistance against bumping.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a blocking element is used to prevent rotation of the operating element, then security against unauthorized access is improved, but the lock becomes vulnerable to manipulation through forces, torques, and vibrations
Solution Approach 1:
An intermediate element is introduced between the control element and the blocking element. This intermediary component transmits movement from the control element to the blocking element while providing mechanical advantage and stability. The intermediate element includes a first pivot positioned on one side of a plane comprising the control axis and a second pivot, creating a leveraged connection that resists manipulation forces, torques, and vibrations while maintaining reliable blocking functionality.
2Strength
If the first pivot is positioned on one side of the plane comprising the control axis and second pivot, then resistance against bumping and manipulation is improved, but the range of motion of the control element is limited
Solution Approach 1:
The intermediate element is designed to move from one side of the plane to the other side as the control element transitions between locked and unlocked positions. This dimensional transition allows the system to achieve both strong resistance against manipulation (when the pivot is on one side) and operational freedom (when the pivot can cross to the other side). The plane itself serves as a reference for this dimensional movement, enabling the system to balance strength and ease of operation.
Data Source
AI summary
A lock arrangement comprising an operating element including an engageable feature and rotatable around a rotation axis; a blocking element arranged to adopt a blocked position and an unblocked position; a stop; a control element rotatable around a control axis between a locked position where the control element contacts the stop, and an unlocked position; an intermediate element rotatably connected to the control element and the blocking element, respectively, at a first pivot and a second pivot, respectively, the intermediate element being arranged to transmit a movement of the control element to the unlocked position to a movement of the blocking element to the unblocked position; the lock arrangement being configured such that when the control element adopts the locked position, and the unlocked position, respectively, the first pivot is positioned on a first side and a second side, respectively, of a plane comprising the control axis and second pivot.