Display Support Linkage for Constant Tilt Height Adjustment
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Solution Overview
Problem
Existing display supporting devices with four-bar or five-bar linkages face challenges in size reduction and require larger working spaces due to the restriction of their shape, especially when adjusting the height of a display while maintaining a constant tilt angle.
Innovation Solution
A supporting device with a base, hollow housing, bearing module, linkage module, and elastic element, utilizing a five-bar linkage mechanism that allows the hollow housing to move between horizontal and raised positions while maintaining a consistent angle with the gravity direction, utilizing pivots and sliding slots to adjust the display's height without altering its tilt angle, and incorporating stoppers and washers for precise control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a four-bar linkage mechanism is used to adjust display height while maintaining constant tilt angle, then the tilt angle remains unchanged during height adjustment, but the device requires larger working space and cannot be reduced in size
Solution Approach 1:
The mechanism is divided into multiple independent connecting rods (first through fifth connecting rods) that can move and pivot independently. This segmentation allows each rod to contribute to the overall motion control, enabling compact packaging of the mechanism while maintaining the geometric constraints needed for constant tilt angle during height adjustment.
Solution Approach 2:
The mechanism transitions from a planar four-bar linkage to a spatial five-bar linkage configuration with pivots distributed in three-dimensional space. By adding the fifth connecting rod and positioning pivots at different spatial locations, the mechanism achieves both compact size and the required motion constraints through multi-dimensional geometric relationships.
2Volume of moving object
If a five-bar linkage mechanism is used to reduce device size, then the size can be significantly decreased, but the mechanism complexity increases
Solution Approach 1:
Multiple functions are merged into the five-bar linkage mechanism: height adjustment, tilt angle maintenance, and compact spatial configuration are all achieved through the integrated motion of the five connecting rods and their pivots. This consolidation reduces the need for separate components and simplifies the overall structure despite the increased linkage count.
Solution Approach 2:
The five-bar linkage mechanism serves multiple purposes simultaneously: it adjusts display height, maintains constant tilt angle, and achieves compact size. The elastic element also provides multiple functions by providing restoring force and enabling the housing to pivot between horizontal and raised positions. This multi-functionality reduces the need for additional components.
3Manufacturing precision
If stoppers and washers are added for precise control, then the control precision is improved, but the device complexity increases
Solution Approach 1:
The stoppers and washers are integrated into the existing linkage mechanism components rather than being separate control devices. The stoppers utilize the natural motion paths of the connecting rods to provide positional limits, and the washers are incorporated into the pivot joints to provide friction-based control. These components serve dual purposes: structural support and precision control, avoiding the need for additional dedicated control mechanisms.
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 supporting device to maintain a consistent tilt angle during height adjustments, reduces the overall size, and allows for a slim appearance by efficiently utilizing the available space, while providing stable support through adjustable elastic forces.
Implementation Method 1
an elastic element being disposed in the hollow housing, abutting the third connecting rod and the second pivoting end, and providing an elastic force
Implementation Method 2
a first pivoting end, a second pivoting end... the hollow housing is changed between a horizontal position and an raised position... maintaining a consistent angle with the gravity direction
Data Source
AI summary
A supporting device for bearing a display is provided. The supporting device comprises a base, a hollow housing, a bearing module, a linkage module, and an elastic element, wherein an elastic force provided by the elastic element is the greatest when the hollow housing is in a horizontal position; the elastic force decreases when the hollow housing moves from the horizontal position to a raised position, hence, the hollow housing can stop at any positons between the horizontal position and the raised position.