Frameless Speaker with Elastic Plate for Diaphragm
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Solution Overview
Problem
Conventional micro-speakers have a large frame that occupies space, resulting in a small magnetic circuit unit and low sensitivity due to the frame's size constraints.
Innovation Solution
The design omits the frame by directly connecting the diaphragm and elastic plate to the magnetic circuit unit, with a magnetic gap formed between inner and outer magnetic conduction members, allowing for a larger magnetic circuit unit and improved vibration space, and using an elastic plate to electrically connect the voice coil to the external circuit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a frame is used to accommodate the magnetic circuit unit and support the diaphragm and terminals, then the structural stability is improved, but the speaker size increases and the magnetic circuit unit size decreases
Solution Approach 1:
The patent removes the frame component entirely from the speaker structure. The magnetic circuit unit, diaphragm, and terminals are directly integrated without a surrounding frame, which eliminates the space occupation problem while maintaining structural integrity through direct connections between components.
Solution Approach 2:
The patent merges the functions of the frame, magnetic circuit unit support, and terminal positioning into a single integrated structure. The magnetic circuit unit serves as both the magnetic field generator and the structural support element, eliminating the need for a separate frame while reducing overall speaker size.
2Strength
If a frame is used to support the magnetic circuit unit, then the structural integrity is improved, but the magnetic circuit unit size decreases and sensitivity lowers
Solution Approach 1:
The frame is extracted from the design, allowing the magnetic circuit unit to be enlarged without structural constraints. The direct integration of components provides sufficient structural integrity while maximizing the magnetic circuit unit size for improved sensitivity.
Solution Approach 2:
The magnetic circuit unit performs multiple functions: generating the magnetic field, providing structural support, and positioning the diaphragm and terminals. This multi-functionality eliminates the need for a separate frame while maintaining structural integrity and maximizing sensitivity.
3Strength
If the frame occupies space, then the structural support is improved, but the vibration space of the diaphragm decreases
Solution Approach 1:
The frame is removed to maximize the vibration space available to the diaphragm. The magnetic circuit unit and diaphragm are directly connected, providing structural support while allowing maximum freedom of movement for the diaphragm during vibration.
Solution Approach 2:
The patent reorganizes the spatial arrangement by eliminating the frame's three-dimensional enclosure and adopting a planar integration approach. This allows the diaphragm to utilize the maximum available space for vibration while structural support is provided through direct connections in the magnetic circuit unit.
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 enhances sound quality and sensitivity by increasing the vibration space of the diaphragm within a smaller speaker size, while eliminating the need for a frame, thereby improving performance compared to traditional micro-speakers.
Implementation Method 1
a voice coil (12) for driving the diaphragm (11) to vibrate
Implementation Method 2
The vibrating unit includes a diaphragm (11), a voice coil (12) for driving the diaphragm (11) to vibrate
Implementation Method 3
an elastic plate (13) for providing electrical signals to the voice coil (12)
Data Source
AI summary
A speaker includes a vibrating unit, and a magnetic circuit unit. The vibrating unit includes a diaphragm, an elastic plate coupled with the diaphragm, and a voice coil electrically connecting to the elastic plate. The vibrating unit is mounted to and positioned by the magnetic circuit unit. A projection of the diaphragm on the magnetic circuit unit is disposed within an outline of the magnetic circuit unit. The speaker has no frame or any structure with a frame configuration, which makes the magnetic circuit unit larger and more powerful.