Coaxial Speaker Shared Magnetic Gaps for Lower Height
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Solution Overview
Problem
Coaxial speakers in the related art have excessive product height due to stacked sounding units and separate magnetic circuit systems, leading to increased cost and reduced market competitiveness.
Innovation Solution
A coaxial speaker design with a first and second sounding unit arranged coaxially, sharing a magnetic circuit system with a first and second magnetic gap, and utilizing a flexible printed circuit board and elastic supporting members to reduce height and cost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If two sounding units are stacked in height direction, then sound emission functionality is achieved, but product height becomes excessive
Solution Approach 1:
The patent applies nesting by placing the second sounding unit inside the first sounding unit, with the second diaphragm positioned within the magnetic gap of the first sounding unit. This concentric arrangement allows both sounding units to coexist in a compact volume, eliminating the need for vertical stacking and thereby reducing product height while maintaining both sound emission functionalities.
Solution Approach 2:
The patent transitions from a vertical stacking arrangement (height direction) to a radial/concentric arrangement where the second sounding unit is positioned inside the first sounding unit in the horizontal plane. This dimensional change from Z-axis stacking to XY-plane nesting effectively reduces the overall height of the product while preserving both sound emission capabilities.
2Ease of operation
If each sounding unit has individual magnetic circuit system, then sound emission functionality is achieved, but magnetic circuit system cost becomes excessive
Solution Approach 1:
The patent merges the magnetic circuit systems by using a single magnetic circuit structure that serves both sounding units. The first magnetic unit provides the magnetic field for the first sounding unit, while the second magnetic unit is integrated within the same overall magnetic circuit, sharing common magnetic components and reducing the total number of separate magnetic circuit systems required.
Solution Approach 2:
The magnetic circuit system is designed with multi-functionality where the first magnetic unit and second magnetic unit work together within a unified magnetic circuit structure. The magnetic circuit serves dual purposes by providing magnetic fields for both sounding units while using shared components, thereby reducing manufacturing costs while maintaining both sound emission functionalities.
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 achieves a reduced product height and improved structural utilization of the magnetic circuit system, lowering costs while maintaining sound emission functionality.
Implementation Method 1
a first voice coil locating in the first magnetic gap and driving the first diaphragm for vibrating and emitting sounds
Data Source
AI summary
A coaxial speaker is provided, including a first frame, a second frame surrounded by the first frame, a first sounding unit fixed between the two frames, a second sounding unit coaxial with and surrounded by the first sounding unit fixed to the second frame, and a magnetic circuit system including a bottom plate, a first magnetic unit and a second magnetic unit spaced apart from the first magnetic unit for forming a first magnetic gap for the first sounding unit. The second magnetic unit includes a second magnet in an annular shape and a second yoke in an annular shape. The bottom plate is provided with a bending wall locating inside the second magnetic unit, the bending wall is spaced apart from the second magnetic unit for forming a second magnetic gap for the second sounding unit. The coaxial speaker reduces a product height and a magnetic circuit system cost.