Lock Mechanism Axial Motion Control via Interlocking Projections
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Solution Overview
Problem
Existing lock mechanisms, particularly those for secure applications like key boxes and safes, face challenges in balancing robustness against large forces while maintaining smooth and reliable operation.
Innovation Solution
A lock mechanism featuring a control element and lock element with axially extending projections that intermesh to allow axial movement, enabling robust construction, easy manufacturing, and reliable motion control, with features like conical tips for easy meshing and a motor-driven system to manage forces effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the lock mechanism is made robust to withstand large forces, then strength and reliability are improved, but the complexity of ensuring smooth operation increases
Solution Approach 1:
The lock mechanism is divided into distinct functional segments: a control element for rotation, a lock element for axial movement, and intermeshing projections for motion control. This segmentation allows each component to be optimized independently - the control element handles rotational input while the lock element handles the locking action, reducing overall system complexity while maintaining robustness
Solution Approach 2:
The intermeshing projections act as an intermediary mechanism between the control element and lock element. These projections translate rotational motion of the control element into axial motion of the lock element, providing a reliable motion control interface that ensures smooth operation even in robust constructions
2Ease of manufacture
If intermeshing projections are used to control lock element motion, then manufacturing ease and reliability are improved, but the precision of motion control may be compromised
Solution Approach 1:
The projections incorporate curved or conical surfaces that guide the intermeshing action. This curvature provides a self-aligning mechanism that ensures precise motion control while being simple to manufacture using conventional machining processes, bridging the gap between manufacturing ease and motion precision
3Stability of the object's composition
If the control element and lock element are held apart by projections in active position, then structural robustness is improved, but the mechanism complexity increases
Solution Approach 1:
The spacing function and locking function are merged into a single intermeshing projection system. The same projections that control motion also maintain the spaced relationship between control and lock elements in the active position, reducing overall mechanism complexity while ensuring structural stability
Data Source
AI summary
In one embodiment, a lock mechanism includes a control element arranged for rotation about an axis between an active position and an inactive position. The control element includes a control head having one or more axially extending projection(s). The lock mechanism further includes a lock element that is axially aligned with the control element and includes a lock element head. The lock element head has one or more axially extending projection(s). The projection(s) of the control head and the projection(s) of the lock element head are arranged such that in the active position, the lock element and control element are held apart by the projections, and such that in the inactive position, the projections can mesh together to permit axial movement of the lock element relative to the control element.