Telescopic Column Pneumatic Braking for Floodlight Stability
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Solution Overview
Problem
Conventional telescopic supporting columns face issues with maneuverability, particularly when heavy lighting devices are attached, as they can suddenly fall during retraction due to vertical load, leading to inferior handling and support.
Innovation Solution
A telescopic supporting column design featuring a mast made of sequentially nested tubular columns with a braking mechanism that includes a pressure-regulating portion with first and second vent holes and a valving element, allowing controlled air escape and intake to facilitate easy extension and gentle retraction, enhancing maneuverability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the mast is made telescopic by nesting tubular columns to enable easy extension and retraction, then the ease of operation is improved, but the stability deteriorates when heavy loads are applied during retraction
Solution Approach 1:
The patent applies pneumatic principles by introducing an air chamber within the telescopic mast structure. The air chamber communicates with the exterior through vent holes and uses air pressure to provide braking force during retraction. This pneumatic system enables controlled, gradual retraction of the mast even when heavy lighting devices are attached, preventing sudden collapse while maintaining the telescopic extension capability.
Solution Approach 2:
The patent changes the physical state parameter of air within the air chamber to create a braking mechanism. By controlling air pressure through vent holes and valving elements, the system transforms the compressibility of air into a stabilizing force that resists sudden retraction movements. This parameter change allows the mast to maintain stability during retraction while preserving its telescopic functionality for easy operation.
2Stability of the object's composition
If a braking mechanism is added to control retraction of the telescopic mast, then the stability during retraction is improved, but the device complexity increases
Solution Approach 1:
The braking mechanism utilizes pneumatic pressure within an air chamber rather than complex mechanical braking components. The air pressure system naturally provides progressive resistance during retraction through the vent holes, eliminating the need for sophisticated mechanical brakes, cables, or motors while achieving stable, controlled retraction of the telescopic mast.
Solution Approach 2:
The air chamber braking system is designed to operate automatically based on the retraction motion itself. As the mast retracts, the air chamber volume decreases and air pressure increases, naturally creating braking force without requiring external control systems. The vent holes and valving elements passively regulate this pressure, allowing the system to self-regulate its braking action throughout the retraction process.
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 design improves maneuverability by allowing easy extension and gentle retraction of the mast, preventing sudden falls and reducing user effort, even with heavy loads, by managing air pressure within the air chamber.
Implementation Method 1
an air chamber formed inside said mast by partitioning off said pressure-regulating portion and closing portion
Implementation Method 2
enabling a compressed air to escape to the exterior only from the first vent hole
Data Source
Figure 1
Figure 2
Figure 3(A)~3(B)
AI summary
A telescopic supporting column and a floodlight using the same with enhanced maneuverability. The telescopic supporting column 1 comprises: a mast 6 that is made telescopic by inserting two or more tubular columns sequentially in a nested manner; and a braking mechanism 16 for moderately retracting said mast 6. The braking mechanism 16 comprises: a pressure-regulating portion 25 provided in a proximal tubular column as a proximal end of said mast 6; a closing portion 26 provided in a distal tubular column as a distal end thereof; and an air chamber 27 formed inside said mast 6 by partitioning off said portions 25, 26. The pressure-regulating portion 25 includes: first and second vent holes 31, 32 communicating said air chamber 27 with an exterior; and a valving element 33 closing said second vent hole 32 in a manner capable of opening and closing said second vent hole 32 only.