Speaker Magnet Assembly With Segmented Cylindrical Magnets
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Solution Overview
Problem
Existing loudspeaker magnet designs require a large volume of magnet material to achieve high energy performance, which is inefficient in terms of material usage and cost.
Innovation Solution
A magnet assembly for a speaker device that includes a plate member with a plurality of cylindrical bores and cylindrical magnets positioned within these bores, allowing for a reduced volume of magnet material while maintaining high energy performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a large volume of magnet material is used, then high energy performance is achieved, but material usage and cost increase
Solution Approach 1:
The magnet assembly is segmented into multiple cylindrical magnets arranged in a circular pattern around a central axis, with each magnet positioned in a separate cylindrical bore of the plate member. This segmentation allows the magnetic field to be distributed efficiently around the voice coil, achieving high energy performance with reduced total magnet volume compared to a single large magnet.
Solution Approach 2:
The invention transitions from a conventional single-block magnet structure to a multi-dimensional circular arrangement of cylindrical magnets around a central axis. This spatial reconfiguration in multiple dimensions optimizes the magnetic field distribution around the voice coil, achieving higher energy performance per unit volume of magnet material.
2Use of energy by moving object
If a large volume of magnet material is used, then high energy performance is achieved, but cost increases
Solution Approach 1:
The magnet assembly is segmented into multiple cylindrical magnets arranged in a circular pattern around a central axis, with each magnet positioned in a separate cylindrical bore of the plate member. This segmentation allows the magnetic field to be distributed efficiently around the voice coil, achieving high energy performance with reduced total magnet volume compared to a single large magnet.
Solution Approach 2:
The invention changes the geometric parameters of the magnet assembly from a single large volume to multiple smaller cylindrical volumes arranged in a specific circular pattern. This parameter change optimizes the magnetic field density and distribution, achieving high energy performance with reduced total magnet material volume and associated costs.
3Quantity of substance
If multiple cylindrical magnets are arranged in bores, then magnet volume is reduced, but structural complexity increases
Solution Approach 1:
The plate member serves multiple functions: it provides structural support, contains the cylindrical bores for magnet positioning, and acts as a mounting surface. The cylindrical bores simultaneously serve as positioning features and retention structures for the magnets, reducing the need for additional complex positioning mechanisms.
Solution Approach 2:
The cylindrical magnets are nested within the cylindrical bores of the plate member, with each magnet fitting precisely into its designated bore. This nested arrangement simplifies the overall structure by integrating the magnet housing function into the plate member itself, eliminating the need for separate magnet retaining structures.
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 proposed magnet assembly reduces the required magnet volume while achieving the desired magnetization, thereby optimizing material usage and cost-effectiveness.
Implementation Method 1
The electrical signals representing the sound flow through the voice coil and interact with the magnetic field. This causes the voice coil and the coupled diaphragm to oscillate in response to the electrical signal.
Data Source
AI summary
A magnet assembly for a speaker device that includes a plate member with a plurality of cylindrical bores disposed within the plate member and contains an opening within an upper surface of the plate member. A plurality of cylindrical stands are positioned within each cylindrical bore and extending to a length within the cylindrical bore, leaving a void defined by the distance between an opening of the cylindrical bore to the stand. A plurality of cylindrical magnets are positioned within each cylindrical bore of the plate member and adjacent the stand within each cylindrical bore, wherein the magnets substantially occupy the void.