Flexure-Hinge Adjustment Actuator With Magnetic Holding Force
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Solution Overview
Problem
Existing adjustment devices face challenges in achieving precise adjustment movements with low energy consumption and efficient production and assembly, while also requiring a system to determine the operating state of the adjustment device.
Innovation Solution
The adjustment device incorporates a base component, an adjustment body mounted via a flexure hinge, and a drive device with an actuator comprising an electrical coil and a magnetizable compensation component, along with permanent magnet segments, allowing for precise movement and energy-efficient operation, and includes sensors for determining the operating state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a conventional actuator with metallic sleeve and coils is used, then adjustment movements can be generated, but energy consumption is high and production/assembly is complex
Solution Approach 1:
The patent replaces the conventional mechanical actuator system (metallic sleeve with coils) with a magnetic field-based system using permanent magnet segments and a compensation component. This substitution eliminates the need for continuous electrical power to maintain position, significantly reducing energy consumption while simplifying the overall device structure and easing production requirements
Solution Approach 2:
The invention extracts and removes the energy-consuming metallic sleeve and coil assembly from the actuator design. By taking out this complex mechanical-electrical system and replacing it with a passive permanent magnet-based system, the patent achieves lower energy consumption and reduced production complexity
2Manufacturing precision
If precise adjustment movements are achieved using conventional actuators, then positioning accuracy is improved, but energy consumption increases
Solution Approach 1:
The patent employs periodic action through the alternating attraction and repulsion of like-poled permanent magnet segments as the compensation component moves through them. This periodic magnetic interaction enables precise positioning at discrete intervals along the adjustment path, achieving high precision without continuous energy consumption
Solution Approach 2:
The magnetic field-based positioning system replaces energy-intensive mechanical actuators, maintaining precise adjustment capability through magnetic forces while eliminating the need for continuous electrical power supply
3Power
If permanent magnet segments are positioned close to the coil for efficient magnetic interaction, then actuation efficiency is improved, but risk of contact and mechanical interference increases
Solution Approach 1:
The patent introduces an air gap as an intermediary space between the permanent magnet segments and the coil assembly. This air gap allows the magnetic fields to interact efficiently for actuation while physically preventing contact between the components, thereby maintaining high actuation efficiency without compromising reliability
Solution Approach 2:
The system uses magnetic field interaction through the air gap instead of direct mechanical contact, substituting a contactless force transmission mechanism that maintains efficiency while eliminating wear and mechanical failure risks
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 solution enables precise adjustment movements with low energy consumption, optimized production, and effective determination of the adjustment device's operating state, enhancing its operational efficiency and reliability.
Implementation Method 1
an actuator which comprises an electrical coil (71) and which comprises at least one compensation component (80) made of a magnetizable or magnetized material
Implementation Method 2
at least one permanent magnet segment (MS), which is in each case situated in a contactless distance in a direction extending in the coil axis (AS) beside the coil (71)
Implementation Method 3
at least one flexure hinge (21, 22), by means of which the adjustment body (10) is rotatably mounted on the base component (B1) about a flexure hinge rotation axis (D1)
Data Source
AI summary
Adjustment device, comprising: a base component (B1), an adjustment body (10), at least one flexure hinge (21), by means of which the adjustment body (10) is rotatably hinged on the base component (B1) about a flexure hinge rotation axis (D1), and at least one drive device (C), which is coupled to the base component (B1) and to an adjustment body connection device (AV), in order to move the same relative to each other, wherein the drive device (C) comprises an actor (60) which comprises an electrical coil (71) with a coil axis (AS) extending along the flexure hinge rotation axis (D1) and a compensation component (80) of a magnetizable or magnetized material and at least one permanent magnet segment (MS), which is disposed beside the actor (60) movably beside the same, wherein the magnet field lines in the interior of the permanent magnet segment (MS) extend along the coil axis (AS), and an adjustment system, an computer program product.