Speaker Diaphragm With Elastic Ribs For Uniform Vibration
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Solution Overview
Problem
Conventional speakers face issues with non-uniform diaphragm vibration due to mismatched elastic forces between the diaphragm and the elastic-wave member, leading to uneven sound reproduction, potential voice coil damage, and increased size requirements for compact device designs.
Innovation Solution
A speaker design featuring a diaphragm with elastic ribs that restricts displacement direction, eliminating the need for a conventional elastic-wave member, allowing for compact configuration, easier manufacturing, and reduced production costs, while ensuring uniform vibration and preventing voice coil deviation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional elastic-wave member is used to control diaphragm vibration, then the diaphragm can return to its initial position, but the elastic force mismatch causes non-uniform vibration and limits diaphragm amplitude
Solution Approach 1:
The patent removes the conventional elastic-wave member from the speaker system and replaces it with elastic ribs integrated directly into the diaphragm structure. This extraction eliminates the material mismatch problem between the elastic-wave member and diaphragm, allowing uniform vibration across the entire diaphragm surface while maintaining the ability to return to the initial position through the elastic ribs' restoring force.
Solution Approach 2:
The elastic ribs are merged with the diaphragm structure, forming an integrated unit where the elastic ribs serve both as structural support and as the elastic restoring mechanism. This merging eliminates the interface between separate components (elastic-wave member and diaphragm), ensuring uniform elastic force distribution and eliminating the amplitude limitations caused by material property mismatches.
2Reliability
If an elastic-wave member is used to support the voice coil, then the voice coil is maintained in position, but the large elastic force causes the voice coil to move nonlinearly and potentially scratch the speaker
Solution Approach 1:
The patent extracts the voice coil positioning function from the elastic-wave member and transfers it to the elastic ribs integrated in the diaphragm. This eliminates the excessive elastic force problem because the elastic ribs are designed to provide just enough restoring force to maintain voice coil alignment without the oversized elastic force that caused nonlinear movement and potential scratching of the speaker components.
3Reliability
If a conventional speaker design with elastic-wave member is used, then the diaphragm can be supported, but the overall speaker size increases
Solution Approach 1:
The elastic ribs are merged with the diaphragm structure, eliminating the need for a separate elastic-wave member and its associated support space. This integration significantly reduces the overall speaker volume while maintaining adequate diaphragm support, as the elastic ribs provide the necessary structural support and elastic restoring force within the diaphragm's own structure.
4Reliability
If a conventional speaker design is used, then the diaphragm can be mounted, but the manufacturing complexity and production cost increase
Solution Approach 1:
The elastic ribs are merged with the diaphragm as an integrated structure, eliminating the need for separate elastic-wave member components and their associated mounting operations. This integration simplifies the manufacturing process and reduces production costs by reducing the number of parts and assembly steps required.
Solution Approach 2:
The elastic ribs serve multiple functions simultaneously: they provide structural support for the diaphragm, provide the elastic restoring force for vibration, and maintain voice coil alignment. This multi-functionality eliminates the need for separate components for each function, simplifying manufacturing and reducing production complexity.
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 solution enables more compact and cost-effective speaker designs with improved sound quality by ensuring uniform diaphragm vibration and reducing the risk of voice coil damage, while maintaining adequate amplitude for sound reproduction.
Implementation Method 1
A plurality sets of elastic ribs are radially and evenly arranged around the vibration unit... each sets of the elastic ribs restricts the displacement direction of the vibration unit in the axial direction thereof
Implementation Method 2
a voice coil coupled at the vibration diaphragm, and a magnetic coil unit magnetically inducing with voice coil for driving the vibration diaphragm to vibrate
Implementation Method 3
the vibration diaphragm is driven to vibrate correspondingly... the vibration unit moves reciprocatingly along an axial direction so as to drive the air to reproduce sounds
Data Source
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AI summary
A diaphragm and suspension edge includes inner and suspension edge portions. The inner suspension edge portion includes an inner suspension edge body, and one or more inner side elastic ribs protruding relative to the inner suspension edge body. Each inner side elastic rib forms a bulge on a first side of the inner suspension edge portion, and forms a flute on the opposite side. The outer suspension edge portion includes an outer suspension edge body, and one or more outer side elastic ribs protruding relative to the outer suspension edge body. Each outer side elastic rib forms a protrusion on a first side of the outer suspension edge portion, and forms a groove on the opposite side. The suspension edge restricts the displacement direction of the vibration unit of a speaker in the axial vibration direction thereof to prevent offset of the vibration unit.