Display Support Mechanism With Thin-Profile Torque and Friction Control
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Solution Overview
Problem
Existing supporting devices for large-size displays face challenges in meeting torque requirements while maintaining a light and thin profile, as they often rely on limited torsion springs and friction mechanisms that may not effectively provide the necessary torque or ensure consistent frictional contact.
Innovation Solution
The supporting device incorporates an elastic element set with compression and extension springs, a friction unit with alternating fins and friction pieces, and a spindle rod unit to provide adjustable torque and friction, allowing the carrying board to rotate and adjust the display's inclination angle, ensuring effective torque distribution and frictional contact without increasing overall thickness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a torsion spring with large diameter is used to provide sufficient torque for large-size displays, then the torque requirement is met, but the overall thickness of the supporting device increases
Solution Approach 1:
The patent divides the elastic element into multiple segments: a first elastic element (compression spring) and a second elastic element (extension spring) arranged in series along the gravity direction. This segmentation allows each spring to have a smaller diameter while collectively providing the required torque through their combined elastic forces, resolving the contradiction between torque requirement and thickness constraint.
Solution Approach 2:
The patent changes the arrangement dimension from radial (single torsion spring perpendicular to gravity) to vertical (multiple springs parallel to gravity). By arranging the first and second elastic elements along the gravity direction, the system provides sufficient torque without increasing the radial thickness, as the springs utilize the vertical dimension for their action.
2Force
If multiple raised washers and limit washers are stacked to increase friction, then friction force increases, but the frictional contact becomes inconsistent and unreliable
Solution Approach 1:
The patent extracts the friction generation mechanism from the stacked washer configuration and relocates it to the lateral surface of the spindle rod. The friction unit with fins and friction pieces directly contacts the rotating spindle rod, ensuring consistent frictional force generation through reliable rotational contact rather than stacked surface contact.
Solution Approach 2:
The patent introduces a friction unit as an intermediary component between the spindle rod and the carrying board unit. This friction unit, consisting of fins and friction pieces, mediates the friction interaction by providing a dedicated friction surface that rotates with the spindle rod, ensuring consistent and reliable frictional contact.
3Device complexity
If the torsion spring is sleeved on the connecting rod within the rotation unit, then the design is compact, but the spring diameter is limited and cannot provide sufficient torque for large displays
Solution Approach 1:
The patent changes the orientation of the elastic elements from perpendicular to the gravity direction (traditional torsion spring arrangement) to parallel with the gravity direction. The first and second elastic elements are arranged vertically along the gravity axis, allowing them to have larger effective length while maintaining compact radial dimensions, thus providing sufficient torque without increasing overall device thickness.
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
This configuration enables the supporting device to meet the torque requirements for large-size displays while maintaining a thin profile, ensuring effective frictional contact and adjustable display angles, thus addressing the limitations of prior art.
Implementation Method 1
an elastic element set, including: a first elastic element with one end arranged on the protruding neck and the other end arranged on one of the upper half area and the lower half area, and constantly providing a first elastic force
Implementation Method 2
each of the first fins generates relative rotation and friction with the adjacent first friction piece
Data Source
AI summary
A supporting device is provided and includes: an upright column; a protruding neck arranged on the upright column; a spindle rod unit with a main spindle rod fixed on the protruding neck along a second axis; a first rotating rod; a carrying board unit having a first frame pivoted on the main spindle rod, the first frame having a first upper half part and a first lower half part, the first rotating rod passing through one of the first upper half part and the first lower half part and being able to rotate relative to the main spindle rod with the second axis as an axis; a first fin set being sleeved on the main spindle rod and the first rotating rod; a first friction set stacked alternately with the first fin set; and an elastic element set connected to the protruding neck and the carrying board unit.