Liftable Screen Stand With Segmented Pneumatic Height Extension
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Solution Overview
Problem
Conventional screen stands with pneumatic cylinders are costly and limited in height adjustment, making it difficult to lift larger LCD monitors to a higher position without obstructing the view.
Innovation Solution
A liftable screen stand design featuring a base assembly with an elevating device comprising a guiding tube, elevating tube, supporting tube, pedal, and pneumatic cylinder with a gas spring, allowing the LCD monitor to be lifted to a higher position without the need for a larger capacity pneumatic cylinder, using a pedal mechanism to control the elevating tube's movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If a pneumatic cylinder with bigger capacity for gas is used to increase the height lifting range, then the height lifting range is improved, but the manufacturing cost and technical complexity increase too much
Solution Approach 1:
The lifting system is divided into two independent parts: a supporting tube with a pushing rod that provides initial lifting force, and a pneumatic cylinder that provides additional lifting force. This segmentation allows each component to have a smaller, more cost-effective capacity while achieving the same overall lifting range as a single large-capacity pneumatic cylinder would provide alone.
2Length of stationary object
If a pneumatic cylinder with bigger capacity for gas is used to increase the height lifting range, then the height lifting range is improved, but the technical complexity increases
Solution Approach 1:
The lifting function is segmented between a mechanical pushing rod system and a pneumatic cylinder system. The pushing rod is disposed in the interior of the supporting tube and connected to activate the pneumatic cylinder. This segmentation simplifies each individual component's design requirements while achieving the cumulative lifting effect needed for extended height range.
3Ease of manufacture
If a conventional screen stand with limited height lifting range is used, then the manufacturing cost is reduced, but the viewability of larger LCD monitors is obstructed
Solution Approach 1:
The lifting system combines a supporting tube with pushing rod mechanism and a pneumatic cylinder in series. The pushing rod provides initial lift, and the pneumatic cylinder provides additional lift, achieving an extended height range that allows larger LCD monitors to be positioned at viewing height without requiring an expensive single-large-capacity pneumatic cylinder.
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 LCD monitor to be lifted to a higher position than conventional stands, ensuring a clear view for larger screens without increasing production costs, by utilizing a cost-effective design that enhances structural strength and mobility.
Implementation Method 1
The pneumatic cylinder has a gas spring, an activating valve, and an elevatable tube. The gas spring is fixed at a top of the supporting tube.
Data Source
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AI summary
A liftable screen stand has a base assembly (10), an elevating device (20), and an assembling device (30). The elevating device (20) is mounted on the base assembly (20) and has a guiding tube (21), an elevating tube (22), a supporting tube (23), a pedal seat (24), a pedal (25), a pushing rod (26), and a pneumatic cylinder (27). The elevating tube (22) is movable along the guiding tube (21). The supporting tube (23) is disposed in the guiding tube (21). The pedal seat (24) is mounted in the base assembly (10). The pedal (25) is mounted on the pedal seat (24). The pushing rod (26) abuts against the pedal (25). The pneumatic cylinder (27) has a gas spring (271), an activating valve (272), and an elevatable tube (273). The assembling device (30) is mounted to the elevating tube (22).