Speaker Diaphragm Fixing Structure for Waterproof Reliability
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Solution Overview
Problem
Portable speakers face issues such as diaphragm warping and basket separation due to testing, transportation, and water leak inspections, leading to increased defect rates and compromised waterproof and acoustic performance.
Innovation Solution
A speaker design where the diaphragm's joint and fixed parts are bonded to both the upper and outer surfaces of the basket, enhancing fixation without requiring a four-directional mounting that would reduce acoustic performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the speaker is fixed in four directions to improve waterproof performance, then the waterproof performance is improved, but the height of the front cavity channel is reduced, so that the acoustic performance of the speaker is reduced
Solution Approach 1:
The fixing structure is segmented into two distinct parts: a first fixing structure extending from the upper surface of the basket to secure the diaphragm in the radial direction, and a second fixing structure extending from the outer side surface of the basket to secure the diaphragm in the axial direction. This segmentation allows independent optimization of each fixing direction without compromising the other, resolving the contradiction between waterproof reliability and acoustic performance.
2Device complexity
If the speaker is fixed inside a side sounding speaker-box in three directions, then the structure is simpler, but there are risks of diaphragm warping and basket separation caused by multiple tests of water and gas leak inspection, drop, transportation and the like, thereby increasing the defect rate
Solution Approach 1:
The invention extracts the fixing function into separate dedicated structures: the first fixing structure specifically addresses radial stability while the second fixing structure specifically addresses axial stability. This extraction of fixing functions into specialized structures eliminates the need for complex multi-directional fixing arrangements, reducing overall structural complexity while enhancing reliability against diaphragm warping and basket separation.
3Reliability
If the diaphragm is firmly fixed to prevent warping and separation, then the product quality is improved, but the front cavity channel height may be reduced, affecting acoustic performance
Solution Approach 1:
The invention transitions from single-plane fixing to multi-dimensional fixing by introducing fixing structures in both the radial direction (first fixing structure) and axial direction (second fixing structure). This dimensional expansion allows the diaphragm to be firmly secured without encroaching on the front cavity channel height, as the fixing is distributed across different spatial dimensions rather than compromising the vertical acoustic path.
Data Source
AI summary
A speaker and a speaker-box using the same is provided in the present disclosure. The speaker includes a basket and a vibration system. The vibration system includes a diaphragm fixedly connected to the basket. The diaphragm includes a body part and a fixed part bent and extended from the edge of the body part to the basket, the basket includes a side wall encircling the receiving space, the side wall includes an upper surface opposite to the body part and an outer side surface extended from the outer edge of the upper surface, and the upper surface encircles an opening communicated with the receiving space; the body part covers the opening and is fixed with the upper surface, and the fixed part is extended along the outer side surface and fixed with the outer side surface.