Rotation Shaft Device With Eccentric Torsion Mechanism
Solution Overview
Problem
Existing rotation shaft devices for flat electronic devices, such as tablet computers, lack multi-stage adjusting and positioning capabilities, leading to instability when in a standing status, and are too thick, compromising structural strength and portability.
Innovation Solution
A rotation shaft device with a base, first and second rotation units, a torsion unit with a friction torsion mechanism, and a slide mechanism, along with an auxiliary member and spring, allowing for staged torsion adjustment and reduced thickness, enabling stable multi-angle positioning without increasing the device's overall thickness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a friction structure with connection rod mechanism is used to provide positioning function, then positioning capability is improved, but device thickness increases
Solution Approach 1:
The connection rod is received within the hollow slot of the base, and the friction sleeve is positioned within the first rotation body structure. This nested arrangement allows the positioning mechanism components to be contained within each other, reducing the overall thickness of the device while maintaining the multi-stage positioning capability through axial displacement of the friction sleeve.
2Device complexity
If core shaft and rotation center line are coaxially arranged, then structural simplicity is improved, but pivoting portion protrusion increases affecting flat arrangement
Solution Approach 1:
The invention offsets the core shaft from the rotation center line, creating an eccentric arrangement. This dimensional change in the positioning of components allows the pivoting portion to be recessed into the tablet computer body when the supporter is folded against the wall surface, enabling a flatter arrangement while maintaining structural simplicity through the systematic design of the eccentric connection rod mechanism.
3Adaptability or versatility
If multiple components are used to achieve rotation and positioning effects, then functional performance is improved, but device thickness increases
Solution Approach 1:
The invention integrates multiple functions into a compact structure where the base with hollow slot, first rotation body, and friction sleeve work together as a unified mechanism. The connection rod mechanism is merged with the hollow slot structure, and the friction positioning function is combined with the rotation mechanism, achieving both rotation and multi-stage positioning functions while minimizing device thickness through this integrated design.
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 provides stable multi-stage positioning and adjustable torsion, maintaining structural strength while reducing the device's thickness, enhancing user experience and portability by allowing easy operation and adjustment of the electronic device's angle.
Implementation Method 1
an elastic unit is abutted against the pressing block; when the connection sheet is released from an positioned status, the biased mechanism is linked for enabling the torsion generating device to be outwardly and biasedly rotated, the pressing block is inclined due to the biased rotation, and the elastic unit is able to allow the biased mechanism to be automatically bounced to a preset angle
Implementation Method 2
the friction structure includes a friction sleeve and a shaft capable of being oppositely displaced along the axial direction, the first rotation body is connected to the friction sleeve capable of being axially displaced relative to the shaft via the connection rod structure, thereby driving the friction sleeve to be axially displaced. In other words, the connection rod mechanism is able to convert the friction force generated by the axial opposite displacement into a torsion
Data Source
AI summary
A rotation shaft device comprises: a base; a first rotation unit; a pair of second rotation units; a torsion unit, having a connection rod; a slide mechanism, including a slide block disposed in a hollow slot and having the top surface formed with a pivotal part, and a pair of slide pieces are disposed at two opposite sides of the slide bock; and a bottom seat, formed with an accommodation part, two opposite sides defined on a top surface of the accommodation part and/or a bottom surface of the base are formed with a pair of slide slots allowing the pair of slide pieces to be disposed; the slide block is pivotally connected to the torsion unit and the first rotation unit, thus the pair of slide pieces can stably slide between the bottom surface of the base and the pair of slide slots.