Multi-Pivot Hinge Module for Computing Device Stability
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Solution Overview
Problem
Current computing devices, such as tablets, lack sufficient processing power and input capabilities for tasks like document editing and form filling, and existing multi-pivot hinge assemblies do not provide adequate stability and flexibility for these applications.
Innovation Solution
A fully integrated multi-pivot hinge module that securely rotates portions of a computing device, allowing for a range of angles and stability, enabling the device to function like a laptop while maintaining the flexibility of a tablet, with features like friction bands, sequencing pins, and hinge covers for controlled rotation and protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a multi-pivot hinge assembly is used to attach input devices to tablets, then the device gains flexibility and stability for various configurations, but the structural complexity increases
Solution Approach 1:
The hinge assembly is divided into multiple independent pivot joints (first pivot, second pivot, third pivot) connected by frames. Each pivot can rotate independently, allowing the input device to achieve multiple configuration angles (fully open, partially open, fully closed) while maintaining structural integrity. This segmentation enables complex motion patterns through simpler individual components.
Solution Approach 2:
The hinge assembly uses nested frame structures where inner frames are positioned within outer frames. The first frame, second frame, and third frame are arranged concentrically, with each frame containing pivot mechanisms that allow sequential rotation. This nesting approach compactly packs multiple degrees of freedom into a space-efficient structure.
2Stability of the object's composition
If multiple pivot points are implemented for stable rotation, then the rotational stability improves, but the manufacturing precision requirements increase
Solution Approach 1:
Multiple pivot mechanisms are combined into an integrated hinge assembly where the first pivot, second pivot, and third pivot work together as a unified system. The frames connect these pivots in sequence, creating a coordinated rotation mechanism that achieves stable multi-angle positioning through the combined action of all pivots rather than requiring each pivot to independently achieve high precision.
Solution Approach 2:
The frames serve as intermediary elements between the pivot points, transmitting and coordinating the rotational motion. The first frame connects the first and second pivots, while the second frame connects the second and third pivots. These intermediary structures help align the pivots and distribute manufacturing tolerances across the entire assembly.
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 enhances the computing device's stability and usability by allowing various configurations, such as a detachable keyboard, and provides a secure, stable, and flexible interface for improved user interaction and functionality.
Implementation Method 1
a friction band wrapped around the shaft to resist relative motion between the first frame and the second frame
Implementation Method 2
a sequencing pin sliding within a slot formed by the first frame and the second frame to engage and disengage from opposing cam surfaces
Data Source
Figure 1A~1B
Figure 1C~2A
Figure 2B
AI summary
Technologies are described for a fully integrated multi-pivot hinge module to rotatably secure portions of a computing device. The multi-pivot hinge module includes multiple sequential frames that are radially aligned and configured to control a relative order of opening and closing of each individual frame. The multi-pivot hinge module includes friction, timing and kinematic components for controlling the order of rotation, degree of rotation and increasing stability of the module.