Housing Locking Mechanism for Reliable Plug-In Release
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Solution Overview
Problem
Existing electrical devices face challenges in securely and reliably connecting housing sub-assemblies while allowing for easy and comfortable detachment, with existing solutions often requiring complex mechanisms or separate movement sequences for locking and unlocking.
Innovation Solution
A locking device with an actuation element and a locking element integrated with the housing wall, allowing for secure interlocking and easy unlocking by moving the actuation element in a direction transverse to the locking direction, enabling a simple and intuitive connection and disconnection process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a complex locking mechanism is used to securely connect housing sub-assemblies, then the connection reliability is improved, but the device complexity increases
Solution Approach 1:
The locking device is segmented into two distinct functional elements: a locking element with a locking protrusion and an actuation element with an actuation protrusion. This segmentation allows each element to perform its specific function independently, achieving reliable locking without requiring a complex integrated mechanism. The locking element provides secure connection while the actuation element enables easy release.
Solution Approach 2:
The actuation protrusion is designed to be received within a corresponding recess of the locking element, creating a nested arrangement. This nesting allows the actuation mechanism to be compact while still providing effective operation. The actuation element can be moved along the actuation direction to release the locking engagement without requiring external or separate mechanisms.
2Strength
If a secure locking mechanism is implemented, then the connection strength is improved, but the ease of operation for unlocking deteriorates
Solution Approach 1:
The locking element is designed with translational freedom along the actuation direction, allowing it to dynamically transition between locked and unlocked states. The actuation element can be moved along the actuation direction to shift the locking element, enabling easy release of the locking engagement. This dynamic design maintains strong locking during operation while allowing simple unlocking through linear movement.
Solution Approach 2:
The actuation element serves as an intermediary between the user and the locking element. By providing an actuation protrusion that can be grasped and moved, it mediates the force application needed to release the locking engagement. This intermediary design makes the unlocking process easier by providing a convenient interface for applying release force.
3Device complexity
If a simple locking device design is used, then the device complexity is reduced, but the reliability of the connection deteriorates
Solution Approach 1:
The locking element and actuation element are designed with asymmetric geometries that provide directional functionality. The locking protrusion and actuation protrusion have specific shapes that ensure proper engagement in the locked state while allowing controlled disengagement during actuation. This asymmetric design ensures reliable connection without requiring complex additional components to enforce proper orientation and engagement.
4Device complexity
If the actuation element is moved only in the locking direction, then the device complexity is reduced, but the ease of operation for unlocking deteriorates
Solution Approach 1:
The solution introduces a second degree of freedom by allowing the actuation element to move not only in the locking direction but also along the actuation direction. This dimensional change enables the actuation element to effectively release the locking engagement by moving along the actuation direction, providing a simple and intuitive unlocking operation that feels natural to the user.
Data Source
AI summary
An electrical device includes: a first housing sub-assembly; a second housing sub-assembly that has a housing wall; and a locking device. The first housing sub-assembly and the second housing sub-assembly are positionable adjacent to one another along a plug-in direction and, when in a position in which they are adjacent to one another, are interlocked via the locking device. The locking device has an actuation element arranged on the second housing sub-assembly so as to be adjustable along an actuation direction, and a locking element connected adjustably to the housing wall and operatively connected to the actuation element. The locking element is configured, in the position of the housing sub-assemblies in which they are adjacent to one another, to interlock the first housing sub-assembly and the second housing sub-assembly, and, by moving the actuation element in the actuation direction towards the housing wall, are movable in an unblocking direction.