Speaker Upper Plate Structure for Short-Axis Strength
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Solution Overview
Problem
Existing speakers suffer from poor strength on the short axis, leading to potential damage to the magnet when dropped, and they are not optimized for miniaturization and thinness.
Innovation Solution
A speaker design with a frame, vibration system, and magnetic circuit system that includes projections and recesses to enhance short axis strength, accommodate magnets, and allow for miniaturization and thinness, featuring a magnetic circuit with a secondary magnetic component and projections to increase sound performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the short axis side of the upper plate is suspended, then the speaker structure is simpler and easier to manufacture, but the strength of the short axis side is poor and the magnet is prone to damage when dropped
Solution Approach 1:
The upper plate is segmented into a main body and a separate first projection. The first projection is extended from the short axis side of the main body and fixed with the frame, providing additional structural support and protection for the magnet while maintaining the ease of manufacture of the overall structure.
2Volume of moving object
If the speaker is miniaturized and made thinner, then the speaker meets modern device requirements, but the strength and stability of the structure may be compromised
Solution Approach 1:
The first projection extends in a direction away from the main magnetic component, utilizing the vertical dimension to provide structural support without increasing the horizontal footprint of the speaker. This allows the speaker to maintain a compact size while achieving the necessary structural strength through three-dimensional structural design.
3Strength
If the first projection is added to the upper plate, then the short axis strength is enhanced and magnet protection is improved, but the device complexity increases
Solution Approach 1:
The first projection is merged with the upper plate structure, forming an integrated component rather than a separate part. This reduces the number of components and assembly steps, thereby minimizing the increase in device complexity while still achieving the desired strength enhancement and magnet protection.
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
Enhances short axis strength, prevents magnet damage, and meets demands for miniaturization and thinness while improving sound generating performance.
Implementation Method 1
a magnetic circuit system driving the vibration system to vibrate
Implementation Method 2
a voice coil driving the diaphragm to vibrate
Data Source
AI summary
A speaker includes a frame, a vibration system, and a magnetic circuit system. The magnetic circuit system includes a lower plate, a main magnetic component, a secondary magnetic component, and an upper plate. The upper plate includes a main body, the main body includes two long axis sides and two short axis sides, the two long axis sides are opposite to each other, the two short axis sides are opposite to each other, the two long axis sides are fixed with the frame, at least one of the two short axial sides is provided with a first projection extending in a direction away from the main magnetic component, the first projection is fixed with the frame. Compared with the related art, the speaker disclosed by the present disclosure could get better stability and acoustic performance.