Display Support Hinge With Spring-Friction Torque Balancing
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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
A supporting device with an upright column, a protruding neck, a spindle rod unit, a carrying board unit, and an elastic element set that includes compression and extension springs, along with a friction unit featuring alternating fins and friction pieces, allowing for adjustable inclination and effective frictional engagement to meet torque demands and reduce 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 (torsion spring) for providing torque and a second elastic element (compression or extension spring) for assisting elastic force. This segmentation allows each spring to be optimized independently - the torsion spring can have smaller diameter while the compression/extension spring compensates to maintain overall torque output, thus reducing thickness while meeting torque requirements.
Solution Approach 2:
The patent introduces a second elastic element that acts in a different dimensional direction (compression or extension along the gravity direction) to supplement the torque provided by the first torsion spring. This multi-dimensional approach to elastic force generation allows the system to achieve required torque without increasing the diameter of the primary torsion spring, thereby maintaining thin profile.
2Force
If multiple raised washers and limit washers are stacked to increase friction, then friction force is increased, but the friction contact becomes inconsistent and unreliable
Solution Approach 1:
The patent extracts the friction generation function from the washer stacking mechanism and relocates it to a dedicated friction unit with fin structures. This separation allows the friction mechanism to be optimized independently - the fins provide consistent friction contact through their geometric design rather than relying on imperfect washer-to-washer contact, thus maintaining reliable friction force.
Solution Approach 2:
The patent implements localized friction enhancement through fin structures with specific geometric characteristics (fin height, thickness, spacing) designed to optimize friction contact. This local quality approach ensures consistent friction force generation at the critical contact points between the friction unit and rotating rod, rather than relying on uniform washer stacking that may have variable contact pressure.
3Volume of moving object
If the torsion spring diameter is limited by the rotation unit thickness, then the device remains thin, but the torque provided is insufficient for large-size displays
Solution Approach 1:
The patent merges the torque provision function of the torsion spring with the elastic force provision of a compression or extension spring into a unified elastic element system. This combination allows the thin torsion spring to work synergistically with the second spring to generate sufficient total torque, overcoming the limitation of small torsion spring diameter while maintaining thin profile.
Solution Approach 2:
The patent creates a composite elastic element system combining two different spring types (torsion spring and compression/extension spring) with different mechanical characteristics. This composite approach leverages the rotational elasticity of the torsion spring and the linear elasticity of the compression/extension spring to achieve superior torque output within the thickness constraints of the rotation unit.
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 device effectively adjusts the torque and friction to support large-size displays, ensuring stability and thinness by utilizing the elastic element set and friction unit, which allows for adjustable inclination and secure frictional contact, addressing the limitations of previous designs.
Implementation Method 1
an elastic element set (7), including: a first elastic element (71) with one end arranged on the protruding neck (3) and the other end arranged on one of the upper half area (452) and the lower half area (453), and constantly providing a first elastic force
Implementation Method 2
a friction unit (6), when the carrying board unit (4) rotates relative to the protruding neck (3) between the first position and the second position with the second axis (X2) as the axis, the first fin set (61) and the second fin set (63) are driven to rotate with the second axis (X2) as the axis, such that each of the first fins (611) generates relative rotation and friction with the adjacent first friction piece (621), and each of the second fins (631) generates relative rotation and friction with the adjacent second friction piece (641)
Data Source
AI summary
A supporting device is provided for carrying a display 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 carrying board unit pivoted on the main spindle rod, used for carrying the display and having an upper half area and a lower half area relative to a gravity direction and the second axis; and 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, where the first elastic element constantly provides a first elastic force, and the first elastic force enables the carrying board unit to rotate about the second axis as an axis.