Integrated Pressure Adjusting Body for Small Speaker Bass Reproduction
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Solution Overview
Problem
Conventional small-sized speaker devices face challenges in reproducing deep bass sounds due to acoustic stiffness limitations, requiring costly pressure adjusting bodies like activated carbon, which increase production and distribution costs.
Innovation Solution
A speaker unit is designed with a magnetic circuit, frame, vibration plate, voice coil, and pressure adjusting body coupled using an adhesive agent, where the pressure adjusting body is integrated within the speaker unit, near the magnetic circuit or frame, to enhance bass sound reproduction while minimizing cost increases.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a small-sized cabinet is used, then the device size is reduced, but bass sound reproduction capability deteriorates due to acoustic stiffness
Solution Approach 1:
The pressure adjusting body is integrated directly onto the speaker unit structure (frame, magnetic circuit, or vibration plate) rather than being placed separately in the cabinet. This merging eliminates the need for a large cabinet volume while maintaining bass reproduction capability through direct pressure adjustment at the source.
Solution Approach 2:
The pressure adjusting body acts as an intermediary element that compensates for the small cabinet volume by actively adjusting pressure fluctuations in the acoustic cavity. This mediator enables bass sound reproduction in small cabinets by counteracting the acoustic stiffness that would otherwise prevent it.
2Reliability
If a pressure adjusting body like activated carbon is placed in the cabinet, then bass sound reproduction is improved, but production and distribution costs increase
Solution Approach 1:
The pressure adjusting body is combined with the speaker unit as an integrated assembly rather than a separate component. This merging eliminates the need for separate mounting operations and reduces distribution requirements, thereby lowering production and distribution costs while maintaining bass reproduction capability.
Solution Approach 2:
The speaker system is segmented into the speaker unit (including pressure adjusting body) and the cabinet as separate functional modules. This segmentation allows the pressure adjusting body to be factory-integrated with the speaker unit, simplifying assembly and reducing manufacturing complexity.
3Reliability
If the pressure adjusting body is mounted separately in the cabinet, then bass sound reproduction is achieved, but device complexity and assembly steps increase
Solution Approach 1:
The pressure adjusting body is merged with the speaker unit structure (frame, magnetic circuit, or vibration plate) to form an integrated assembly. This eliminates separate mounting steps and reduces device complexity by reducing the number of discrete components and assembly operations required.
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 allows for efficient and cost-effective reproduction of bass sounds in small-sized speakers, preventing humidity-induced performance degradation and reducing costs associated with separate pressure adjusting body mounting and distribution.
Implementation Method 1
Along with this pressure change, air molecules are absorbed by pressure adjusting body 53 or released from pressure adjusting body 53, thereby suppressing the pressure fluctuation within cabinet 51
Implementation Method 2
The coupling of the pressure adjusting body, the coupling between the vibration plate and the voice coil, the coupling between the vibration plate and the frame and the like are achieved through adhesion using an adhesive agent and the like
Data Source
AI summary
According to the present invention, there is provided a speaker for use in audio/video apparatuses and a small-sized speaker device capable of realizing preferable reproduction a bass sounds. In order to attain this, in the present invention, a pressure adjusting body is coupled to a portion of a magnetic circuit or a frame, which is a component of a speaker unit, to constitute the speaker unit. The speaker unit is mounted to a small-sized cabinet to constitute a speaker device, which enables realization of preferable reproduction of bass sounds.