Spring Arm for Laser Treatment Apparatus
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Solution Overview
Problem
Laser treatment apparatuses face challenges in providing appropriate support force, leading to user fatigue and reduced accuracy due to inadequate counterweight mechanisms that fail to adjust torque values effectively with arm rotation angles.
Innovation Solution
A spring arm mechanism comprising a mast, arm, support link, and elastic part, where the elastic part is connected to the mast and includes a first and second hinge part to provide varying support forces based on the arm's vertical rotation, allowing the arm to maintain position without external force at high angles and adjust support force as it rotates from high to low angles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a counter weight is provided on the opposite side of the hand piece to support the arm, then the arm can be supported during rotation, but the support force cannot be adjusted appropriately according to the rotation angle, leading to user fatigue and reduced positioning accuracy
Solution Approach 1:
The patent replaces the static counterweight mechanism with a dynamic spring mechanism that automatically adjusts the support force based on the arm's rotation angle. The spring's elastic properties enable the support force to vary dynamically as the arm moves through different angles, providing optimal support at each position without requiring manual adjustment or complex mechanical linkages.
Solution Approach 2:
The patent changes the physical parameter of the support mechanism from a fixed mass (counterweight) to a variable elastic force (spring). The spring's force parameter naturally varies with compression/dextension based on the arm's angle, transforming the support force from a constant value to a variable parameter that adapts to the arm's position, thereby solving the adjustability problem.
2Force
If a heavy counter weight is used to provide sufficient support force, then the arm can be supported at all angles, but the device complexity and weight increase
Solution Approach 1:
The patent extracts the adjustable support function from the complex counterweight mechanism and implements it through a simple spring element. By removing the need for complex linkages, pivots, and adjustable mass distributions, the solution achieves the same support function with significantly reduced mechanical complexity and fewer moving parts.
Solution Approach 2:
The patent replaces the expensive and complex counterweight mechanism with a simple, inexpensive spring element. The spring provides the necessary support function through its elastic properties alone, eliminating the need for heavy materials, complex assemblies, and precise mechanical adjustments, thereby reducing both cost and complexity.
3Device complexity
If the arm is designed to rotate freely without support, then the device is simple and lightweight, but the user experiences fatigue and reduced accuracy when maintaining the arm position
Solution Approach 1:
The patent enables the arm mechanism to support itself through the spring's elastic force. The spring automatically provides the necessary support force based on the arm's position, eliminating the need for external counterweights or active control systems. The mechanism serves itself by using the spring's inherent elastic properties to compensate for the arm's weight at any rotation angle, reducing user fatigue while maintaining simplicity.
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 spring arm system reduces user fatigue and improves accuracy by providing appropriate support force changes with arm rotation, allowing for efficient and precise positioning of the laser treatment apparatus.
Implementation Method 1
a spring, which is provided inside the housing so as to transmit an elastic force between the housing and the rod
Implementation Method 2
the spring may disposed between a flange provided inside the housing in the rod, and a surface formed an opening into which the rod is inserted, and thereby supported to be compressed when the rod is extended
Data Source
AI summary
The present invention relates to a spring arm and a laser treatment apparatus including same and, particularly, to a spring arm for a laser treatment apparatus, which can provide an appropriate support force according to a change in the center of gravity of a link at an initial high rotation angle and at a low rotation angle during use, and a laser treatment apparatus including same. According to the present invention, a user fatigue degree can be reduced and accuracy of the apparatus when in use can be improved.