Double-Diaphragm Speaker Structure for Vehicle Heat Dissipation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Vehicle-mounted sound boxes using non-metal materials suffer from poor heat dissipation due to the absence of a heat conduction structure, affecting their normal operation.
Innovation Solution
A sound device with a double-diaphragm vibration system, featuring metal domes and a magnetic circuit system, which includes a first and second vibrating diaphragm with metal domes and voice coils, and a magnetic circuit system with magnetic gaps, enhancing heat dissipation through double-sided metal structures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If non-metal materials are used for the vibrating diaphragm and housing, then the weight of the sound device is reduced, but the heat dissipation performance deteriorates
Solution Approach 1:
The patent uses a composite structure combining metal and non-metal materials. The vibrating diaphragm consists of a metal dome (for heat conduction) combined with a non-metallic vibrating portion and folding ring (for light weight and flexibility). This composite approach allows the device to maintain low weight while the metal dome provides effective heat dissipation pathways for the voice coil.
2Device complexity
If a single-sided vibrating diaphragm is used, then the device structure is simplified, but the heat dissipation capability is insufficient
Solution Approach 1:
The patent transitions from a single-sided vibrating diaphragm to a double-sided vibrating diaphragm structure. The metal dome is configured to vibrate along with the non-metallic vibrating portion, creating two vibration surfaces. This dimensional change allows heat to be dissipated from both sides of the metal dome, effectively doubling the heat dissipation capability while maintaining relatively simple structure.
3Temperature
If metal materials are used for the vibrating diaphragm, then the heat dissipation performance is improved, but the weight increases
Solution Approach 1:
The patent applies local quality by using metal material specifically for the dome portion where heat dissipation is most critical (in contact with the voice coil), while the vibrating portion and folding ring are made of non-metallic materials. This localized use of metal provides targeted heat conduction where needed without requiring the entire diaphragm to be metal, thus minimizing weight increase while maximizing heat dissipation performance.
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 double-diaphragm system with metal domes significantly improves heat dissipation, benefiting vehicle-mounted sound boxes by enhancing their thermal management.
Implementation Method 1
The first voice coil is configured to drive the first vibrating diaphragm to vibrate and generate sound. The second voice coil is configured to drive the second vibrating diaphragm to vibrate and generate sound.
Implementation Method 2
The second dome and the first dome are both metal domes... the sound device performs double-sided heat dissipation through the first dome of a metal structure and the second dome of a metal structure
Data Source
AI summary
A sound device includes a frame, a first vibration system, a second vibration system, and a magnetic circuit system. The first vibration system includes a first vibrating diaphragm and a first voice coil. The second vibration system includes a second vibrating diaphragm and a second voice coil. The first vibrating diaphragm includes a first vibrating portion, a first folding ring portion, and a first dome. The second vibrating diaphragm includes a second vibrating portion, a second folding ring portion, and a second dome. The second dome and the first dome are both metal domes. The sound device improves heat dissipation effect of the sound device through the first dome of a metal structure and the second dome of a metal structure, and improves heat dissipation effect of vehicle-mounted sound boxes to a great extent when the sound device is applied to the vehicle-mounted sound boxes.