Air-Spring Support Arm Locking for Stable Screen Positioning
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Solution Overview
Problem
Support devices for electronic devices, such as televisions and display screens, often change position due to unexpected external forces, posing a challenge in environments where a fixed position is required, like surgical rooms.
Innovation Solution
A support device comprising a base, a support arm with an air spring unit and a hinge, featuring a switch assembly with a rotatable cam and lock points, allowing the support arm to be locked at any position between its highest and lowest points, preventing changes due to external forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the support device allows easy rotation and tilting for adjustment, then the ease of operation is improved, but the stability of the device state deteriorates
Solution Approach 1:
The support device implements dynamic characteristics by allowing the support arm to transition between adjustable and fixed states. The switch assembly enables the device to switch between a first state (adjustable, piston rod movable) and a second state (fixed, piston rod immovable), resolving the contradiction between ease of operation and stability of device state
Solution Approach 2:
The device changes the parameter of piston rod movability based on the state of the switch assembly. When the switch assembly is in the first state, the piston rod can move relative to the tube, allowing adjustment. When in the second state, the piston rod cannot move, providing stability. This parameter change resolves the contradiction between ease of adjustment and stability
2Ease of operation
If the support device is designed to be easily adjusted by users, then the ease of operation is improved, but the reliability of maintaining fixed position deteriorates
Solution Approach 1:
The support device implements dynamic characteristics by allowing the support arm to transition between adjustable and fixed states. The switch assembly enables the device to switch between a first state (adjustable, piston rod movable) and a second state (fixed, piston rod immovable), resolving the contradiction between ease of operation and stability of device state
Solution Approach 2:
The device changes the parameter of piston rod movability based on the state of the switch assembly. When the switch assembly is in the first state, the piston rod can move relative to the tube, allowing adjustment. When in the second state, the piston rod cannot move, providing stability. This parameter change resolves the contradiction between ease of adjustment and reliability of fixed position
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 device effectively stabilizes electronic devices by allowing initial adjustment and subsequent locking, preventing unintended movement caused by external forces, ensuring the device remains fixed at the desired angle.
Implementation Method 1
The air spring constantly provides a supporting force to the support arm
Data Source
AI summary
A support device includes a base, a support arm, an air spring unit, and a hinge. The base is mounted on a reference surface; a first end of the support arm is pivotally connected to the base; the air spring unit is disposed in the support arm, and includes a switch assembly having a rotatable cam and an air spring, the cam has a first and a second lock points; the air spring provides a supporting force to the support arm, a tube thereof is disposed in the support arm, a piston rod thereof is telescopically disposed at a first end of the tube, and a release pin thereof is disposed at a second end of the tube. By adjusting the release pin abuts against the first lock point, a position of the hinge can be adjusted and then stopped at any position between the highest and lowest positions.