Rack-and-Pinion Stand for Collision-Free Display Rotation
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Solution Overview
Problem
Existing display devices with stands face challenges when rotating from landscape to portrait mode, as the display unit may collide with the surface on which the stand rests, requiring users to manually lift the device, which is inconvenient.
Innovation Solution
The implementation of a stand with a gear train mechanism, including a mutilated driving gear and pinion gears meshed with rack gears, allows the display unit to be rotated without colliding with the surface by translating rotational motion into linear motion, thereby adjusting the height of the display unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the display unit is rotated from landscape to portrait mode, then the display mode is changed, but the display unit collides with the surface on which the stand rests
Solution Approach 1:
The gear train mechanism is activated before the collision occurs during rotation. The mutilated driving gear engages with pinion gears that are meshed with rack gears, translating rotational motion into linear motion to lift the display unit upward before it can collide with the surface, preventing the harmful effect in advance
Solution Approach 2:
The gear train mechanism acts as an intermediary between the rotating display unit and the stationary surface. By introducing this mechanical transmission system, the rotation is converted into vertical movement through the rack and pinion gears, mediating the conflict between rotation and collision
2Object-affected harmful factors
If the display unit is manually lifted to avoid collision, then collision is prevented, but user convenience is reduced
Solution Approach 1:
The stand's gear train mechanism performs the lifting action automatically without requiring user intervention. When the display unit is rotated, the mutilated driving gear self-engages with the pinion gears, which automatically translate the rotational motion into linear motion to lift the display unit, making the system serve itself rather than requiring manual lifting by the user
3Object-affected harmful factors
If a gear train mechanism is added to prevent collision, then collision is prevented, but device complexity increases
Solution Approach 1:
The gear train mechanism serves multiple functions: it prevents collision during rotation, enables automatic height adjustment, and allows the stand to adapt to different display modes. By integrating this mechanism into the stand structure, multiple benefits are achieved simultaneously, justifying the added complexity through multi-functionality
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 solution effectively prevents collisions between the display unit and the surface during mode changes, enhances user convenience by eliminating the need for manual lifting, and allows for a compact gear design that increases the display unit's height.
Implementation Method 1
The stand may include a gear train having a mutilated driving gear and a pair of pinion gears. The pair of pinion gears may be meshed with the pair of rack gears. The display unit of a display device may be coupled to the mutilated driving gear, such that when the display unit is rotated, the mutilated driving gear may actuate the pair of pinion gears. Due to the engagement of the pair of pinion gears with the pair of rack gears, rotational motion of the pair of pinion gears may get translated into a linear motion.
Data Source
AI summary
Examples of stands and display devices are described. In an example, a stand may be coupled to a pair of racks, a driving gear, and a pair of pinion gears. The pair of pinion gears may be operably coupled to the driving gear. Further, the pair of pinion gears may be meshed with the pair of racks. Upon actuation of the driving gear, the pair of pinion gears may be rotated relative to the pair of racks to cause movement of the gears along the pair of racks.