Speaker Diaphragm Non-Coplanar Design for Radiating Area
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Solution Overview
Problem
Conventional speakers in mobile communication devices have a limited effective radiating area due to the dome's coverage, resulting in reduced sensitivity and speech quality.
Innovation Solution
The speaker design includes a shell with air holes for pressure balance, a magnetic system with a specific magnet configuration, and a vibrating system where the diaphragm's main body and connecting part are non-coplanar, allowing the dome to cover the entire diaphragm area, enhancing the effective radiating area and sound quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If the dome is attached only on the main body of the diaphragm, then the structure is simple, but the effective radiating area is small
Solution Approach 1:
The patent applies dimensionality change by making the diaphragm's main body and connecting part non-coplanar, creating a three-dimensional structure where the main body is positioned at a different plane than the connecting part. This spatial arrangement allows the dome to cover the entire diaphragm area including the periphery, thereby enlarging the effective radiating area without significantly increasing structural complexity.
2Reliability
If the dome covers only part of the diaphragm, then the manufacturing is easier, but the sensitivity and speech quality are reduced
Solution Approach 1:
The patent changes the geometric parameters of the diaphragm by making the main body and connecting part non-coplanar, with the main body positioned at a different height or plane. This parameter change enables the dome to encompass the entire diaphragm surface, maximizing the radiating area and improving speech quality while maintaining manageable manufacturing complexity.
3Area of moving object
If the main body and connecting part are coplanar, then the structure is simple, but the dome cannot cover the entire diaphragm area
Solution Approach 1:
The patent transitions from a two-dimensional coplanar configuration to a three-dimensional non-coplanar structure, where the main body is positioned at a different plane than the connecting part. This dimensional change creates the necessary spatial volume for the dome to cover the entire diaphragm area, including the periphery, thereby maximizing the effective radiating surface.
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 configuration enlarges the effective radiating area, improves sensitivity and sound quality, and extends the speaker's reliability and service life by ensuring proper air venting and material selection for the dome.
Implementation Method 1
a plurality of air holes 1111 for providing an air venting path to balance an internal air pressure inside the shell with an ambient air pressure outside the shell 11
Implementation Method 2
a coil module connected to the diaphragm for driving the diaphragm to vibrate and produce sound
Implementation Method 3
Speakers are widely applied in the mobile communication devices for converting electrical signals into audible sounds
Data Source
AI summary
A speaker is provided in the present disclosure. The speaker includes a shell, a magnetic system and a vibrating system. The shell includes a cover and a frame assembled with the cover for forming a receiving cavity. The magnetic system is received in the receiving cavity for providing a magnetic gap. The vibrating system includes a diaphragm and a coil module suspended in magnetic gap, the coil module is connected to the diaphragm for driving the diaphragm to vibrate, the diaphragm includes a main body, a periphery surrounding the main body and a connecting part extending outwards from the periphery. The main body is non-coplanar with the connecting part.