Suspended Yoke Loudspeaker Structure for Shell Vibration Damping
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Solution Overview
Problem
The excessive vibration of the shell in loudspeakers due to the reverse acting force from the magnetic circuit structure affects sound quality and reduces the reliability and service life of the device.
Innovation Solution
A loudspeaker design that suspends the yoke using an elastic material connected through an inner support body with a first and second connection portion, featuring a planar and ramp structure, to minimize direct transmission of the reverse acting force to the shell, enhancing connection reliability and damping vibration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the yoke is suspended using an elastic material connected to the shell, then the reverse acting force is avoided from being directly transmitted to the shell, improving vibration damping, but the rigidity of the elastic material is poor, reducing the strength of connection between the yoke and the elastic material
Solution Approach 1:
An inner support body is introduced as an intermediary component between the yoke and the elastic material. The inner support body includes a first connection portion connected to the yoke and a second connection portion connected to the elastic material, creating a multi-stage transmission path that protects the elastic material from direct mechanical stress while maintaining vibration isolation
Solution Approach 2:
The connection system is segmented into distinct functional components: the yoke, the inner support body with its connection portions, and the elastic material. This segmentation allows each component to perform its specific function optimally - the inner support body provides structural strength while the elastic material provides vibration damping
2Object-affected harmful factors
If the elastic material is used to suspend the yoke, then vibration damping is improved, but the reliability of connection between the yoke and the elastic material is reduced
Solution Approach 1:
The inner support body serves as a protective intermediary that shields the elastic material from direct mechanical loads. By routing the connection through the inner support body's rigid structure, the elastic material is protected from stress concentration and failure, thereby improving connection reliability while maintaining vibration isolation
Solution Approach 2:
The inner support body provides beforehand cushioning by creating a rigid transmission path that prevents excessive forces from reaching the elastic material. This protective structure is built-in from the beginning, preventing potential connection failures before they can occur
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 design improves the installation reliability of the yoke and prolongs the service life of the loudspeaker by reducing vibrations and maintaining a strong connection between the yoke and the shell.
Implementation Method 1
the elastic material is provided so that the reverse acting force is avoided from being directly transmitted to the shell so as to play a role of damping vibration
Implementation Method 2
the voice coil drives the vibration structure to vibrate and sound under the action of an ampere force
Data Source
AI summary
A loudspeaker includes a main shell body, as well as an elastic body, an inner support body and a sound generating unit which are connected in sequence from an exterior of the main shell body inwards. The sound generating unit includes a yoke suspended in an inner cavity of the main shell body, the inner support body includes a support rod body, a first connection portion is formed on a side of the support rod body facing the yoke and is connected to the yoke, a second connection portion is formed on another side of the inner support body facing the elastic body and is connected to the elastic body.