Electromechanical Transducer Armature Position Stability
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Solution Overview
Problem
Existing electromechanical transducers face challenges in component size reduction and assembly complexity, along with issues of position shifting between the armature and structural portion due to external forces during handling, particularly in manufacturing processes.
Innovation Solution
The design incorporates a structural configuration with two pairs of magnets, a yoke, a coil, and an armature forming a magnetic circuit, along with elastic members that provide restoring force and are fixed to the yoke, allowing the yoke to project externally, thus minimizing position shifting and simplifying assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the armature and structural portion are designed to fit closely together, then manufacturing precision is improved, but position shifting occurs due to external forces during handling
Solution Approach 1:
The structural portion is divided into separate functional components (magnets, yoke, coil) that are positioned around the armature rather than requiring the armature to penetrate a single integrated structure. This segmentation allows the armature to be surrounded and supported by multiple components, distributing external forces and preventing position shifting while maintaining manufacturing precision.
Solution Approach 2:
The elastic members act as intermediaries between the armature and the structural portion, providing both positioning and force distribution. These members allow the armature to be precisely positioned during manufacturing while also absorbing external forces during handling, preventing direct contact and position shifting between the armature and rigid structural components.
2Device complexity
If the armature penetrates the internal space of the structural portion, then component integration is improved, but assembly complexity increases
Solution Approach 1:
Instead of having the armature penetrate through the structural portion from one side, the design inverts the approach by having the structural portion components (magnets, yoke, coil) arranged around and surrounding the armature. This allows the armature to be assembled first, then the structural components are added around it, simplifying the assembly process while maintaining integration.
Solution Approach 2:
The structural portion components are distributed in multiple dimensions around the armature rather than requiring linear penetration. The magnets, yoke, and coil are positioned in different spatial arrangements around the armature, allowing assembly from multiple directions and reducing assembly complexity while achieving integrated component design.
3Strength
If the elastic members are positioned to cover the yoke, then structural support is improved, but position shifting occurs during handling
Solution Approach 1:
The elastic members are positioned to provide localized support at specific points where the armature contacts the structural portion, rather than uniformly covering the entire yoke. This localized support provides necessary structural strength while minimizing the surface area exposed to external forces, reducing position shifting during handling.
Solution Approach 2:
The elastic members are asymmetrically positioned relative to the yoke, with specific engagement points designed to distribute external forces. Rather than symmetric coverage, the elastic members are placed at strategic locations that provide both structural support and resistance to handling forces, preventing position shifting while maintaining strength.
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
This configuration enables easy assembly, reduces component size, and effectively suppresses position shifting during handling, enhancing the electromechanical transducer's workability and suitability for size reduction.
Implementation Method 1
an armature having an inner portion penetrating an internal space of the structural portion and outer portions protruding from the inner portion toward both sides in a first direction (X), forming, together with the structural portion, a magnetic circuit through two regions of the inner portion facing the two pairs of magnets, and configured to displace in a second direction (Z) perpendicular to the first direction by magnetic force of the magnetic circuit
Implementation Method 2
a pair of elastic members each located on both sides of the armature in the second direction, and configured to provide, to the armature, restoring force according to relative displacement of the armature corresponding to the structural portion
Data Source
AI summary
An electromechanical transducer includes: a structural portion configured such that two pairs of magnets magnetized in opposite directions, a yoke configured to guide magnetic fluxes from the magnets, and a coil configured to receive a supplied electric signal are located integrally; an armature having an inner portion penetrating an internal space of the structural portion and outer portions protruding from the inner portion toward both sides in a first direction, forming, together with the structural portion, a magnetic circuit through regions of the inner portion facing the two pairs of magnets, and configured to displace in a second direction perpendicular to the first direction by magnetic force of the magnetic circuit; and a pair of elastic members each located on both sides of the armature in the second direction, and configured to provide, to the armature, restoring force according to relative displacement of the armature corresponding to the structural portion.