Pivotable Display Support Shaft With Switchable Tilt Range
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Solution Overview
Problem
Existing pivotable support shaft assemblies for displays have a fixed pivot range, unable to accommodate different postures required for working and packaging conditions, such as pivoting between 20° and −20° for working and −90° for packaging and transportation.
Innovation Solution
A pivotable support shaft system comprising a main shaft, first and second connecting seats, a retaining plate, and a retaining pin with a shifting lever and elastic member, allowing the retaining pin to move between two positions to adjust pivot range, enabling the display to pivot within a small angle for working and a large angle for packaging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed pivot range is used in the support shaft assembly, then the structure is simple and reliable, but the display cannot be adjusted to different postures for working and packaging conditions
Solution Approach 1:
The support shaft assembly incorporates a movable retaining pin that can shift between two positions along the main shaft, dynamically changing the pivot range from a first range (e.g., 20° to -20°) to a second range (e.g., 90° pitch-down). This dynamic adjustment mechanism allows the same structure to serve multiple functions without requiring completely separate assemblies for working and packaging conditions.
2Adaptability or versatility
If a movable retaining pin mechanism is added to adjust pivot range, then adaptability is improved, but the device complexity increases
Solution Approach 1:
The retaining pin mechanism utilizes the existing rotational motion of the display as the driving force for switching between pivot ranges. When the display rotates, the retaining pin automatically engages with different retaining edges on the retaining plate, causing the pin to shift positions and change the pivot range without requiring external actuators or complex control systems. The system essentially uses its own operational motion to trigger the range switching.
3Volume of moving object
If the display is pivoted to a large pitch-down angle for packaging, then package size is reduced and transportation stability is improved, but the structure requires additional mechanisms to maintain position
Solution Approach 1:
The retaining plate acts as an intermediary component with multiple retaining edges positioned at different angular locations. When the display is pivoted to the packaging position (large pitch-down angle), the retaining pin engages with a specific retaining edge on the retaining plate, which is itself attached to the main shaft. This intermediary structure provides stable positional maintenance at the packaging angle without requiring additional locking mechanisms or complex position-maintaining devices.
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
Enables the display to switch between working and packaging conditions by allowing pivoting within a small pitch angle for working and a large pitch-down angle for packaging, improving transportation stability and reducing package size.
Implementation Method 1
an elastic member is disposed around the retaining pin in the axial direction of the main shaft, with the opposite ends of the elastic member bearing against the shifting lever and the first connecting seat respectively, to pushing the retaining pin towards the first position
Data Source
AI summary
A pivotable support shaft for connecting a display with a base member and supporting the display is disclosed. The support is designed to enable the display to have different postures in working condition and package and transporting condition. For example, in the working condition, the screen of the display may be pivotable between a pitch-up angle of about 20° and a pitch-down angle of about −20°, and in the package and transporting condition, the screen of the display may be pivoted down to a pitch-down angle of about −90° where the screen faces downwardly to reduce the package size and improve the transportation stability.