Speaker Lateral Tuning Portion for Resonance Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current speakers face issues with resonance reflection and unbalanced sound presentation when a headphone inner casing is closely located due to insufficient distance and irregular shapes, especially in lightweight designs where ventilation is compromised.
Innovation Solution
A speaker design featuring a frame with a lateral tuning portion and a vibration system that directs airflow from the rear chamber along the lateral wall, allowing for efficient airflow guidance and minimizing resonance by exhausting air from the side rather than the bottom, enabling closer placement to the headphone inner casing without affecting sound curves.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If the speaker is disposed closely to the head phone inner casing to achieve lightweight and thin design, then the weight and thickness are reduced, but resonance reflection occurs and sound performance is degraded
Solution Approach 1:
The patent changes the traditional bottomward airflow direction to a lateral airflow direction by providing lateral walls extending from the bottom wall to form lateral openings. This dimensional change in airflow path allows the speaker to be disposed closely to the head phone inner casing without causing resonance reflection, thus achieving both lightweight design and good sound performance
Solution Approach 2:
The patent introduces lateral walls as an intermediary structure between the rear chamber and the external environment. These lateral walls create a controlled lateral airflow path that mediates the interaction between the speaker and the head phone inner casing, preventing direct resonance while maintaining ventilation function
2Length of moving object
If the speaker is disposed closely to the head phone inner casing, then the distance is reduced for compact design, but resonance reflection occurs due to insufficient distance
Solution Approach 1:
The patent redirects airflow from a vertical path (bottom to external) to a lateral path (rear chamber through lateral walls to external). This dimensional change in airflow direction eliminates the need for sufficient bottom distance, allowing compact disposal while preventing resonance reflection through the lateral ventilation path
3Device complexity
If the traditional bottom tuning hole design is used, then the structure is simple, but resonance reflection occurs and sound curve presentation is influenced when head phone inner casing is close
Solution Approach 1:
The patent replaces the traditional bottom tuning hole with lateral walls having lateral openings. This structural change redirects airflow laterally instead of vertically, eliminating resonance reflection issues while maintaining structural simplicity suitable for mass production
Solution Approach 2:
The lateral walls serve as an intermediary structure that creates a controlled lateral airflow path. This intermediary structure prevents direct interaction between the speaker and the head phone inner casing that causes resonance, while maintaining a relatively simple overall structure
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 design achieves preferable sound performance by preventing resonance reflection and maintaining sound quality even when the headphone inner casing is close to the speaker, ensuring balanced ventilation and improved sound output.
Implementation Method 1
When the vibration film vibrates, an airflow generated in the rear chamber flows along the first tuning portion formed on the lateral wall and is guided out of the first tuning portion
Implementation Method 2
the airflow generated in the rear chamber flows along the first tuning portion formed on the lateral wall and is guided out of the first tuning portion, so as to form a first tuning path
Data Source
AI summary
A speaker includes a frame, a first tuning portion, a vibration system and a magnetic circuit system. The frame has a lateral wall, a bottom wall, an accommodation space defined by the lateral wall and the bottom wall and an opening end located at a top end of the accommodation space. The first tuning portion is formed on the lateral wall of the frame. The vibration system is disposed in the accommodation space of the frame and has a vibration film vibrating along an axial direction of the frame. A rear chamber is defined by the vibration film and the bottom wall of the frame. The magnetic circuit system is disposed in the accommodation space of the frame. When the vibration film vibrates, an airflow generated in the rear chamber flows along the first tuning portion on the lateral wall and exits, so as to form a first tuning path.