Actuator Assembly for Tunable Resonant Frequency and Acceleration
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Solution Overview
Problem
Current actuator manufacturing methods are inflexible and cannot adjust resonant frequency and acceleration parameters to meet specific application requirements, leading to limited configuration possibilities and increased costs.
Innovation Solution
A method involving the modeling and assembly of coil, magnet, and spring parameters, along with a sheet metal housing, to create an actuator that can be customized for various applications by adjusting the geometry and material properties of these components, allowing for flexible adjustment of resonant frequency and acceleration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If actuators are manufactured with fixed component specifications to reduce costs, then manufacturing cost decreases, but adaptability to different application requirements deteriorates
Solution Approach 1:
The patent applies parameter changes by systematically varying geometric parameters of the spring (wire diameter, coil diameter, number of active coils, free length) and magnet parameters (diameter, thickness, magnetization strength) to achieve different resonant frequencies and acceleration values. This allows a single manufacturing process to produce actuators tailored to specific application requirements while maintaining cost efficiency through standardized production methods.
2Device complexity
If actuators are designed with fixed resonant frequency and acceleration parameters, then device complexity is reduced, but versatility for different applications deteriorates
Solution Approach 1:
The patent employs parameter changes by providing explicit formulas and calculation methods that allow designers to adjust spring and magnet parameters according to desired resonant frequency and acceleration values. This systematic approach enables customization of actuator performance without increasing overall design complexity, as the same basic structure and manufacturing process are used across different configurations.
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
Enables the production of actuators tailored to specific application needs while maintaining a simple manufacturing process and reducing costs by allowing for a range of functional parameter adjustments through minimal parameter modifications.
Implementation Method 1
voice-coil actuators with an elastic suspension between a magnetic circuit and a coil
Implementation Method 2
an elastic suspension between a magnetic circuit and a coil
Data Source
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AI summary
A method of manufacturing an actuator comprising a coil, a magnet and a spring, the method comprising the steps of: modelling one or more parameters of at least one of the coil, the magnet and the spring based on at least one predetermined characteristic of the actuator; assembling the coil, the magnet and the spring in accordance with the one or more parameters; providing a sheet metal housing comprising at least one contact part and at least one bending part adjacent to the at least one contact part; attaching the coil to the sheet metal housing; attaching a printed circuit board to the sheet metal housing; attaching the magnet to a bottom surface of the spring; placing the spring on the at least one contact part of the sheet metal housing; and bending the at least one bending part onto a portion of the spring that rests on the at least one contact part of the sheet metal housing.