Gravity-Actuated Locking Device for Collapsible Frame Stability
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Solution Overview
Problem
Conventional LCD panel support frames face issues with maintaining balance and stability during delivery, as the weight of the display panel is not adequately managed when transitioning from a vertical to a horizontal position, leading to potential damage and instability due to accidental movement and vibration.
Innovation Solution
A collapsible support frame assembly with a locking device that includes a stop member pivotally mounted in a casing, which biases outward due to gravity when the frame is turned horizontal, locking the slide holder in place, and reinforcing members to enhance structural stability and prevent vibration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the support frame is turned from vertical to horizontal position for packing and delivery, then packing efficiency and delivery space utilization are improved, but the display panel cannot be kept in balance with spring force, causing accidental movement and potential damage
Solution Approach 1:
The locking device is activated before delivery to preemptively secure the slide holder in position. The stop member is preliminarily positioned within the accommodation chamber and, upon horizontal transition, automatically engages with the slide holder to prevent any accidental movement during packing and delivery.
Solution Approach 2:
The stop member acts as an intermediary element between the slide holder and the casing. It mediates the force transmission from gravity (acting on the stop member itself) to the slide holder, creating a reliable locking mechanism that prevents panel movement without requiring direct connection between the panel and the support frame structure.
2Volume of moving object
If the support frame is designed to be narrow and long for compactness, then space utilization is improved, but the frame becomes less stable and more prone to vibration during delivery
Solution Approach 1:
The support frame combines materials with different properties - the main frame structure uses materials providing compactness, while the reinforcing members use materials with high stiffness and strength characteristics to counteract vibration and enhance stability during delivery.
Solution Approach 2:
The reinforcing members are strategically positioned to dynamically counteract vibration forces that occur during delivery. Their placement and orientation are optimized to provide structural support exactly where vibration stresses are most likely to occur, transforming the static frame into a dynamically stable structure.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively locks the display panel in the collapsed horizontal position, preventing accidental movement and enhancing stability during packing and delivery, while reinforcing the frame to mitigate vibration and ensure secure positioning.
Implementation Method 1
the stop member is forced by its gravity to bias out of the accommodation chamber relative to the casing and to stop against the slide holder, thereby locking the slide holder
Data Source
AI summary
A collapsible support frame assembly includes a support frame having two parallel sliding rails, a slide holder coupled to and movable along the sliding rails of the support frame, a constant force spring mounted between the support frame and the slide holder, and a locking device having a casing affixed to the support frame and a stop member pivotally mounted in an accommodation chamber inside the casing. When the support frame is turned from a vertical position to a horizontal position, the stop member is forced by the gravity thereof to bias out of the accommodation chamber relative to the casing and to stop against the slide holder, thereby locking the slide holder, facilitating packing and delivery.