Constant-Force Lifting Bracket for Hovering Display Height Adjustment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Traditional brackets do not allow for adjustable height of display screens, making them inconvenient to use.
Innovation Solution
A constant force lifting bracket is designed with a fixed bracket, a lifting slide seat, a wheel, a movable block, and a pressure spring, where the movable block is connected to the lifting slide seat via a pull cord around a cam and wheel, and the pressure spring's ends abut against the fixed bracket and movable block, allowing for height adjustment of the display screen.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional brackets are used with fixed connection, then the structure is simple and stable, but the height of the display screen cannot be adjusted
Solution Approach 1:
The bracket transforms from a static fixed connection to a dynamic adjustable system. The lifting slide seat can move vertically along the fixed bracket, and the cam mechanism converts rotational motion to linear motion, enabling the display screen to be adjusted to different heights while maintaining structural stability through the guide groove and steel ball slide rails.
Solution Approach 2:
The cam mechanism utilizes a curved surface with gradually increasing or decreasing radius of curvature. As the cam rotates, the curved surface profile controls the pull cord tension, creating a constant force effect that balances the display screen weight at any position, enabling smooth height adjustment without requiring excessive force.
2Ease of operation
If a lifting mechanism with cam and pull cord is added, then height adjustment is enabled, but the device complexity increases
Solution Approach 1:
Multiple functions are merged into a single integrated mechanism. The cam serves both as a motion converter (rotational to linear) and as a force regulator (constant force through curved profile). The pull cord connects the cam, wheel, and lifting slide seat, combining lifting, positioning, and force balancing functions in one continuous element.
Solution Approach 2:
The fixed bracket serves multiple purposes: it provides structural support, guides the lifting slide seat movement through the guide groove, houses the cam mechanism, and anchors the pressure spring. The lifting slide seat simultaneously supports the display screen, interfaces with the cam mechanism for height adjustment, and slides along the fixed bracket using steel ball slide rails.
3Ease of operation
If pressure spring is added for constant force, then hovering at any height is achieved, but manufacturing cost increases
Solution Approach 1:
The pressure spring automatically adjusts to maintain constant force balance. As the lifting slide seat moves to different heights, the spring compresses or extends to provide the appropriate counterbalancing force, eliminating the need for external control systems, motors, or complex mechanical advantage mechanisms. The system self-regulates to hold the display screen at any position.
Solution Approach 2:
The cam's curved surface profile with varying radius of curvature changes the mechanical parameters of the system. As the cam rotates, the changing radius modifies the pull cord tension in conjunction with the pressure spring, creating a constant force effect that compensates for the display screen weight throughout the entire range of motion, enabling hovering at any height.
4Adaptability or versatility
If elastic force adjustment assembly is added, then adaptability to different screen weights is improved, but device complexity increases
Solution Approach 1:
The elastic force adjustment assembly allows the user to pre-adjust the pressure spring's elastic force before mounting the display screen. By rotating the adjustment screw, the lifting block moves vertically to compress or extend the spring to the appropriate initial state, ensuring the system is properly configured for the specific weight of the display screen to be installed.
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 screen to hover at any height, providing convenience, simplicity, low manufacturing costs, and high accuracy in height adjustment, with the ability to adjust elastic force for different screen weights.
Implementation Method 1
an end of the pull cord close to the movable block is sleeved with a pressure spring, an upper end of the pressure spring abuts against the fixed bracket, and a lower end of the pressure spring abuts against the movable block
Implementation Method 2
there is always the weight of the display screen*the radius of the wheel R=the elastic force of the pressure spring*the radius of curvature r
Implementation Method 3
a side wall of one side of the wheel is provided with a cam
Implementation Method 4
a left and right side walls in the accommodation groove are provided with steel ball slide rails, and the lifting slide seat is slidably connected with the fixed bracket up and down through the steel ball slide rails
Data Source
AI summary
A constant force lifting bracket, comprising a fixed bracket and a lifting slide seat, the lifting slide seat is connected to the fixed bracket by sliding up and down, wherein the fixed bracket is provided with a wheel and a movable block, and a side wall of one side of the wheel is provided with a cam, and the movable block is connected with the lifting slide seat by passing a pull cord around the cam and the wheel in turn, an end of the pull cord close to the movable block is sleeved with a pressure spring, an upper end of the pressure spring abuts against the fixed bracket, and a lower end of the pressure spring abuts against the movable block. The present application can realize the height adjustment of the display screen and enable the screen to hover at any height, which is more convenient to use.