Adjustable Extension Arm Load Capacity Viewing and Adjustment
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Solution Overview
Problem
Conventional extension arm devices for supporting user devices, such as flat panel displays, are inconvenient to adjust due to the concealed clevis and hidden load capacity of the gas spring, making it difficult for users to observe and adjust the load capacity effectively.
Innovation Solution
The adjustable extension arm device includes an extension arm unit, joint unit, extension and retraction unit, adjusting unit, and pointing unit, where the adjusting unit features a rotatable threaded shaft with a driving carrier that moves linearly between upper and lower positions, and a pointing unit that indicates the load capacity through a translucent panel, allowing users to easily view and adjust the load capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the clevis is concealed in the proximal endcap, then the structural strength is maintained, but the visibility of the clevis and load capacity is reduced
Solution Approach 1:
A translucent panel is introduced as an intermediary element between the concealed clevis and the user's view. The panel allows light to pass through, making the clevis and load capacity indicators visible while maintaining the protective enclosure of the proximal endcap, thus preserving structural strength.
Solution Approach 2:
The patent utilizes optical properties (translucency) of the panel material to change the visibility state. The translucent panel allows the user to observe the clevis position and load capacity indicators without opening the endcap, maintaining both visibility and structural integrity.
2Strength
If the clevis is concealed in the proximal endcap, then the structural integrity is preserved, but the ease of operation for adjusting load capacity is reduced
Solution Approach 1:
The translucent panel provides visual feedback to the user about the clevis position and current load capacity setting. This allows the user to observe the adjustment process in real-time and make precise adjustments without needing to open the endcap, improving ease of operation while maintaining structural integrity.
3Difficulty of detecting and measuring
If the viewing opening faces away from the channel, then the load capacity can be observed, but the access opening for adjustment is limited
Solution Approach 1:
The proximal endcap is designed with openings in different spatial dimensions - the viewing opening on one side for observation and the access opening on another side for adjustment. This three-dimensional arrangement allows both functions to be performed simultaneously without interfering with each other, maintaining both observability and accessibility.
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
This design enhances the adjustability and convenience of the extension arm device by allowing users to clearly observe and adjust the load capacity, improving the usability and visibility of the load capacity adjustment process without compromising structural strength.
Implementation Method 1
an adjusting threaded shaft which is rotatably mounted to the proximal endcap, and a driving carrier which is disposed in the accommodation chamber, connected with the movable portion of the extension and retraction unit, and threadedly engaged with the adjusting threaded shaft to make a linear movement along with the rotation of the adjusting threaded shaft
Data Source
AI summary
An adjustable extension arm device includes an extension arm unit, a joint unit pivotally connected to the extension arm unit, an extension and retraction unit disposed in the extension arm unit, and an adjusting unit for adjusting the extension and retraction unit. A proximal endcap of the joint unit defines therein an accommodation chamber having a viewing opening. The adjusting unit has a driving carrier connected with the extension and retraction unit, and an adjusting threaded shaft rotatably mounted to the proximal endcap and threadedly engaged with the driving carrier to make a linear movement of the driving carrier relative to the viewing opening. A pointing unit is connected to and moved with the driving carrier to point out the load capacity of the extension and retraction unit during adjustment.