Spring Arm Mounting Assembly for Linear Torque Balance
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Solution Overview
Problem
Existing support arm systems exhibit non-linear moment distribution due to changes in lever arm length during vertical movement, leading to imbalanced torque and maintenance of hygiene standards in medical facilities.
Innovation Solution
A support arm system with a boom connected to a fixing anchor via an elastic element, where the fastening assembly allows the elastic element to move in a direction different from the force-acting direction, counteracting non-linearity by altering the angle of the elastic element in conjunction with the boom's tilt.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the elastic element is fixed rigidly at both ends, then the structure is simple and stable, but the moment distribution becomes non-linear due to lever arm changes during boom rotation
Solution Approach 1:
The fastening assembly introduces dynamic movement capability between the elastic element and the anchor/bom interface. The first component (attached to anchor) and second component (attached to boom) can move relative to each other along a movement direction, allowing the elastic element's angle to change dynamically during boom rotation to compensate for lever arm variations and maintain linear moment distribution.
Solution Approach 2:
The patent adds a new degree of freedom by allowing movement in a direction other than the force-acting direction (perpendicular or at an angle to the line from elastic element end to boom connection point). This dimensional change enables independent adjustment of the elastic element's angular orientation separate from the boom's rotational position, decoupling the moment distribution from lever arm changes.
2Force
If the elastic element angle changes with boom tilt, then torque balance is improved, but the fastening assembly becomes more complex
Solution Approach 1:
The fastening assembly transforms the static rigid connection into a dynamic joint that permits controlled movement. As the boom tilts and the lever arm changes, the first and second components move relative to each other, automatically adjusting the elastic element's angle to maintain optimal torque balance without requiring complex active control mechanisms.
Solution Approach 2:
The fastening assembly acts as an intermediary mechanism between the anchor and the boom. Rather than directly connecting the elastic element to both fixed points, the movable joint serves as a mediator that translates boom position changes into appropriate elastic element angle adjustments, simplifying the overall control while achieving torque balance.
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 system maintains consistent force application across varying positions, ensuring balanced torque and easy cleaning/disinfection, thus meeting hygiene standards in medical environments.
Implementation Method 1
The elastic element counteracts the weight of the object and the support arm system due to its elasticity – for example, following Hooke's Law.
Data Source
Figure 1a~1c
Figure 2
Figure 3
AI summary
The invention relates, inter alia, to a support arm system designed to hold an object, the support arm system comprising: a mounting anchor, a boom connected to the mounting anchor; an elastic element connected to the boom; and a mounting assembly comprising a first component and a second component, wherein the first component of the mounting assembly is rigidly connected to the mounting anchor, wherein the second component of the mounting assembly is rigidly connected to an end of the elastic element; wherein the first component and the second component are movably connected to each other in a direction of movement, and wherein the direction of movement is other than a direction from the end of the elastic element to a point where the elastic element is connected to the boom.