Speaker Box With Integrated Support and Auxiliary Magnet Wrapping
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Solution Overview
Problem
Existing speaker boxes have excessive parts, large size, small rear cavity space, and height, and suffer from magnetic field leakage due to incomplete wrapping of the magnet, requiring complex assembly processes.
Innovation Solution
A speaker box design with a rear housing, elastic fixing member, and sound-producing unit supported on the elastic fixing member, featuring a frame, vibration system, and magnetic circuit unit, where the front cover includes a support portion, cover plate, and coating portion that wraps the auxiliary magnet with the yoke, reducing the need for additional glue and simplifying assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a metal elastic sheet and support foam are added to support the sound-producing unit, then the sound-producing unit is supported, but the number of parts increases and the size becomes excessively large
Solution Approach 1:
The patent integrates the support function into the rear housing itself by designing a supporting surface that directly supports the sound-producing unit. This eliminates the need for separate metal elastic sheets and support foam, reducing part count while maintaining support capability. The rear housing structure is modified to include this supporting surface, merging multiple functions into a single component.
2Reliability
If a front housing and support foam are added to enclose the rear cavity and support the sound-producing unit, then the enclosure is formed, but the size becomes excessively large and the rear cavity space is reduced
Solution Approach 1:
The patent merges the enclosure function with the rear housing by designing the rear housing to directly form the rear cavity enclosure. The supporting surface is integrated into the rear housing structure, eliminating the need for a separate front housing and support foam assembly. This integration maintains enclosure integrity while maximizing the rear cavity space.
3Ease of manufacture
If the magnetic bowl does not completely wrap the magnet, then the manufacturing is simpler, but magnetic field leakage increases causing structure shaking
Solution Approach 1:
The patent applies local quality by adding a coating portion specifically at the peripheral region where magnetic field leakage occurs. The coating portion is formed with magnetic powder to locally enhance magnetic field containment in the critical area, while the rest of the magnetic bowl maintains its original simple structure. This targeted approach reduces magnetic field leakage without complicating the overall manufacturing process.
4Reliability
If a waterproof double-sided adhesive is affixed only to the highest plane of the front cover, then sealing is achieved, but the height of the whole machine becomes excessively large
Solution Approach 1:
The patent extends the sealing surface from a single highest plane to multiple surfaces including the highest plane and at least one other plane. This multi-plane sealing approach distributes the sealing function across different dimensions, achieving reliable sealing while reducing the need for excessive height accommodation. The sealing structure is redesigned to utilize available surfaces in multiple orientations.
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 design reduces the number of parts, simplifies assembly, enlarges the rear cavity space, minimizes magnetic field leakage, and lowers the overall height while maintaining acoustic performance.
Implementation Method 1
an elastic fixing member fixed to the rear housing, and a sound-producing unit supported on the elastic fixing member
Implementation Method 2
a magnetic circuit unit driving the vibration system to vibrate to produce sound
Data Source
AI summary
The present disclosure provides a speaker box, including a rear housing with a cavity, an elastic fixing member fixed to the rear housing, and a sound-producing unit supported on the elastic fixing member, an orthographic projection of the sound-producing unit being located in the cavity. The sound-producing unit includes a frame, a vibration system, a magnetic circuit unit, and a front cover defining a front cavity with the vibration system. The magnetic circuit unit includes a yoke, a main magnet, and an auxiliary magnet. The front cover includes a support portion, a cover plate, and a coating portion. The coating portion extends to a periphery of the yoke and completely wraps the auxiliary magnet jointly with the yoke. The elastic fixing member, the yoke, and the coating portion jointly seal the cavity to form a rear cavity.