Shared Magnetic Circuit Loudspeaker Module for Space Saving Haptics
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Solution Overview
Problem
The separate manufacturing of loudspeakers and vibration motors in electronic devices, such as smartphones and smart wearable devices, leads to space constraints, reducing battery life and overall performance due to the need for separate installation spaces, which is particularly problematic in compact devices.
Innovation Solution
A loudspeaker module integrating a vibration unit and sound generating unit within a shared magnetic circuit assembly, where the vibration unit and sound generating unit share the magnetic circuit assembly, reducing the need for separate installation spaces and facilitating miniaturization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the loudspeaker and vibration motor are manufactured separately, then each component can be independently optimized, but the installation space is increased and battery life is reduced
Solution Approach 1:
The patent combines the loudspeaker and vibration motor into a single integrated module that shares common components (magnetic circuit assembly, housing, connection structure). This merging reduces the total installation space while maintaining independent functionality of both sound generation and vibration functions.
Solution Approach 2:
The integrated module serves multiple functions simultaneously - it can generate sound through the loudspeaker function and provide vibration feedback through the vibration motor function, while sharing common structural components. This multi-functionality eliminates the need for separate installation spaces for each component.
2Ease of operation
If the loudspeaker and vibration motor are disposed separately on the housing, then each component has dedicated space, but the battery size is reduced and overall performance deteriorates
Solution Approach 1:
By merging the loudspeaker and vibration motor into one integrated module with shared components, the patent reduces the total space occupation, thereby increasing the available space for battery installation and extending battery life.
3Volume of stationary object
If the sound generating unit and vibration unit are disposed in a simply overlapped manner, then space is saved compared to separate disposal, but the space occupation is still large
Solution Approach 1:
The patent implements a nested structure where the vibration unit and sound generating unit are positioned at different heights and share common components. The magnetic circuit assembly and housing serve both functions, creating a compact nested arrangement that minimizes space occupation while simplifying the overall structure.
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 integrated design allows for a more compact loudspeaker module, improving space utilization and assembly efficiency while maintaining functionality, thereby enhancing battery life and performance in electronic devices.
Implementation Method 1
the sound generating unit shares the magnetic circuit assembly with the vibration unit. The magnetic circuit assembly includes a pole piece and a main magnet
Implementation Method 2
the vibration unit includes a counterweight, a motor coil and an elastic arm
Data Source
AI summary
Provided are a loudspeaker module and an electronic device, belonging to the technical field of loudspeakers. The loudspeaker module includes a housing, a connection assembly and a magnetic circuit assembly. A vibration unit and a sound generating unit are disposed in the housing. The connection assembly includes a protrusion, and one end of the protrusion is connected to the housing. The magnetic circuit assembly is disposed between the vibration unit and the sound generating unit, and the sound generating unit shares the magnetic circuit assembly with the vibration unit. The magnetic circuit assembly includes a pole piece and a main magnet, the pole piece is connected to another end of the protrusion, and the main magnet is disposed on the pole piece. The loudspeaker module is capable of having loudspeaker function and vibration motor function, facilitating the miniaturization of the loudspeaker module and the electronic device having the loudspeaker module.