Speaker Box Holder Segmentation for Cavity Volume
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Solution Overview
Problem
Conventional speaker boxes have small cavity volumes due to the structural requirements for sealing and strength, which adversely affect their acoustic performance by limiting both high-frequency and low-frequency sound production.
Innovation Solution
The speaker box design includes a holder with a holder extension and fixing portion that supports the diaphragm, allowing an arc-shaped suspension portion to recess inwardly, and an upper cover fixed to both the lower cover and holder, creating an auxiliary rear sound cavity, increasing overall cavity volume and improving acoustic performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the support wall is made wider to ensure sealing performance and structural strength, then the fixation between the support wall and sounding unit is improved, but the cavity volume of the speaker box decreases
Solution Approach 1:
The support wall is divided into a holder body and a holder extension portion. The holder extension portion specifically provides sealing contact with the sounding unit, while the holder body maintains structural strength. This segmentation allows the sealing function to be concentrated in the extension portion rather than requiring the entire support wall to be wider, thereby preserving cavity volume.
2Strength
If the support wall is made wider to ensure structural strength, then the fixation between the support wall and sounding unit is improved, but the cavity volume of the speaker box decreases
Solution Approach 1:
The support wall structure is segmented into a holder body for structural strength and a holder extension portion for fixation. The L-shaped cross-section of the holder extension portion provides sufficient mechanical anchoring without requiring increased overall wall width, thus maintaining cavity volume while ensuring structural integrity.
3Reliability
If the suspension portion is designed as a positive suspension protruding toward the upper cover, then the acoustic performance is improved, but the cavity volume is occupied
Solution Approach 1:
Instead of the conventional positive suspension design where the suspension portion protrudes toward the upper cover, this patent employs a negative suspension design where the holder extension portion recesses away from the upper cover. This inversion allows the suspension structure to be positioned in the dead space between the sounding unit and holder body, avoiding occupation of the acoustic cavity volume while still providing the necessary suspension function for acoustic 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
This design enhances both high-frequency and low-frequency acoustic performance by increasing the volume of the sound cavities, allowing for better sound production without occupying additional space, thus improving the overall audio quality of the speaker box.
Implementation Method 1
the speaker box includes an upper cover, a lower cover covering the upper cover and defining a receiving space together with the upper cover, and a sounding unit received in the receiving space. The sounding unit includes a diaphragm configured to vibrate and sound.
Implementation Method 2
a sounding unit received in the receiving space. The sounding unit includes a diaphragm configured to vibrate and sound
Data Source
AI summary
Provided is a speaker box, including housing and sounding unit having diaphragm including vibration portion and suspension portion. The housing includes holder, lower and upper covers. The holder includes holder body, holder extension portion and holder fixing portion. The sounding unit is fixed to the holder fixing portion. Orthographic projection of the vibration portion completely falls into the holder body. The suspension portion is arc-shaped formed by recessing away from the holder body. The lower cover includes lower cover plate and lower cover sidewall. The sounding unit, the holder and the lower cover sidewall define front sound cavity. The sounding unit and the lower cover define rear sound cavity. The lower cover sidewall, the holder fixing portion, the holder extension portion and the upper cover define auxiliary rear sound cavity communicated with the rear sound cavity. The speaker box has large cavity volume and good acoustic performance.