Coaxial Loudspeaker Weight Reduction via Integrated Cylindrical Support
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Solution Overview
Problem
Conventional coaxial loudspeakers are heavy, making them unsuitable for mounting in mobile devices such as vehicles or portable devices, where weight reduction is essential.
Innovation Solution
A coaxial loudspeaker design featuring a first loudspeaker unit with a first magnetic circuit and cone, and a second loudspeaker unit with a second magnetic circuit and cone, where a cylindrical support component is fixed to the first magnetic circuit to support the second magnetic circuit and cone, reducing weight while maintaining structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If conventional coaxial loudspeaker structures are used with separate support components, then structural integrity is maintained, but weight increases making them unsuitable for mobile devices
Solution Approach 1:
The support component is integrated with the first magnetic circuit to form a unified structure. The cylindrical support component is fixed to the first magnetic circuit, combining what were previously separate components into one integrated assembly, thereby reducing overall weight while maintaining structural integrity
Solution Approach 2:
The first magnetic circuit serves dual functions: it provides the magnetic field for the first loudspeaker unit and simultaneously acts as a support structure for the second loudspeaker unit. This multi-functionality eliminates the need for separate support components, reducing weight while maintaining structural strength
2Reliability
If multiple separate components are used in coaxial loudspeakers, then structural strength is maintained, but resistance to vibration and impact deteriorates
Solution Approach 1:
By fixing the support component to the first magnetic circuit, the patent creates a more rigid and unified structure that better resists vibration and impact. The integration reduces the number of interfaces and connection points where vibrations could be transmitted, thereby improving reliability
Solution Approach 2:
The support component has an approximately cylindrical shape with a curved surface that connects to the outer-circumferential portion of the second cone. This curved, continuous structure provides better mechanical strength and vibration resistance compared to flat or angular connections
3Reliability
If traditional support structures are used, then structural stability is maintained, but frequency response deteriorates due to resonance
Solution Approach 1:
The approximately cylindrical support component with its curved surface provides better acoustic properties by reducing resonance. The curved geometry distributes stress more evenly and minimizes standing waves, leading to improved frequency response while maintaining structural stability
Solution Approach 2:
The support component's cylindrical structure with curved surface acts as a flexible element that can absorb and dampen vibrations. This flexible design reduces resonance effects and improves frequency response while maintaining the necessary structural stability
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 achieves weight reduction while enhancing structural strength and preventing resonance, leading to improved frequency response and resistance to vibration and impact.
Implementation Method 1
a first loudspeaker unit that includes a first magnetic circuit and a first cone; and a second loudspeaker unit that is disposed on a sound-emitting side of the first loudspeaker unit, and includes a second magnetic circuit and a second cone
Data Source
AI summary
A loudspeaker includes: a first loudspeaker unit that includes a first magnetic circuit and a first cone; and a second loudspeaker unit that is disposed on a sound-emitting side of the first loudspeaker unit, and includes a second magnetic circuit and a second cone. The second loudspeaker unit includes a support component that: is fixed to the first magnetic circuit; supports therein the second magnetic circuit; is approximately cylindrical; and includes an end surface to which an entirety of an outer-circumferential portion of the second cone is connected.