Deployable Retainer Cover for Aperture Stability
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Solution Overview
Problem
Existing aperture covers in construction projects are prone to movement and pose tripping hazards due to inadequate engagement with the contours of the aperture, and they lack easy installation features.
Innovation Solution
A cover device with a deployable retainer mechanism and adjustment mechanism that includes engagement features operable between retracted and deployed positions, allowing for secure fitting over apertures with a beveled edge for improved stability and safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a flat wood piece with a block of wood is used to cover the aperture, then the cover can be installed simply, but it is prone to movement and lateral shifting because the block does not consistently engage the contours of the hole
Solution Approach 1:
The retainer mechanism transitions from a static block of wood to a dynamic deployable structure that can be inserted in a retracted state and then deployed to engage the aperture contours. This allows simple installation followed by secure engagement, resolving the contradiction between ease of installation and stability.
Solution Approach 2:
The cover device is divided into separate functional components: the cover plate and the retainer mechanism. This segmentation allows the retainer to be independently deployed to engage the aperture contours while the cover plate remains simple and easy to install, addressing both simplicity and stability requirements.
2Reliability
If a block of wood is fastened to the underside of plywood to prevent lateral movement, then lateral shifting is reduced, but the cover device becomes a tripping hazard and requires complex structure
Solution Approach 1:
The retainer mechanism is designed to be deployable rather than permanently attached, allowing it to be inserted flat and then deployed only when needed for engagement. This reduces structural complexity while maintaining the ability to prevent lateral movement when deployed.
Solution Approach 2:
The retainer mechanism can be nested within or attached to the cover plate in a compact configuration, reducing overall structural complexity while maintaining the functionality to engage aperture contours and prevent lateral movement when deployed.
3Reliability
If the engagement features are always deployed to secure the cover plate, then stability is improved, but installation becomes difficult and time-consuming
Solution Approach 1:
The retainer mechanism is pre-positioned in a retracted state that facilitates easy insertion and installation. After the cover is positioned over the aperture, the retainer is then deployed to engage the contours, separating the installation phase from the engagement phase and reducing installation time while maintaining secure engagement.
Solution Approach 2:
The retainer mechanism transitions from a retracted installation-friendly state to a deployed engagement-friendly state, allowing quick installation followed by secure engagement. This dynamic capability resolves the contradiction between installation speed and engagement security.
4Adaptability or versatility
If the cover device has no adjustment mechanism, then the structure is simpler, but the engagement features cannot be positioned correctly to match various aperture contours
Solution Approach 1:
The retainer mechanism incorporates adjustable positioning capabilities that allow it to adapt to different aperture contours. The adjustment mechanism enables the engagement features to be positioned correctly while maintaining relatively simple overall device structure through efficient mechanical design.
Data Source
AI summary
A cover device includes a cover plate having a body portion with inner and outer surfaces. A deployable retainer mechanism is positioned on the inner surface of the cover plate and includes a plurality of engagement features operable between retracted and deployed positions. An adjustment mechanism interconnects the deployable retainer mechanism and the cover plate, wherein the adjustment mechanism includes a portion thereof that is accessible from the outer surface of the cover plate for moving the plurality of engagement features between the retracted and deployed positions.