Integrated Sounding Assembly With Perpendicular Haptic Vibration
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Solution Overview
Problem
In existing smart wearable devices, the loudspeaker/receiver and linear vibration motor are separate components, occupying excessive space and compromising performance due to their independent designs.
Innovation Solution
A multifunctional sounding device integrating a housing, sounding unit, bearing member, and motor assembly, where the sounding unit vibrates in one direction and the motor assembly drives the bearing member to vibrate perpendicularly, all housed within a compact structure with a magnetic yoke supporting key components for stability and strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the loudspeaker/receiver and linear vibration motor are designed as independent parts, then each component can be optimized for its specific function, but the overall device size increases and available space for other components decreases
Solution Approach 1:
The patent combines the loudspeaker/receiver and linear vibration motor into a single integrated assembly where the voice coil serves dual purposes: driving the diaphragm for sound production and driving the bearing member for vibration feedback. The magnetic circuit assembly supports both the vibration diaphragm and the bearing member, allowing both functions to coexist in a compact structure.
Solution Approach 2:
The voice coil is designed to perform multiple functions: it acts as the actuator for the loudspeaker/receiver by driving the vibration diaphragm, and simultaneously serves as the actuator for the linear vibration motor by driving the bearing member. This multi-functionality eliminates the need for separate actuators and reduces overall device size.
2Ease of manufacture
If the loudspeaker/receiver and linear vibration motor are assembled separately, then each component can be independently manufactured and tested, but the assembly requires more space and increases manufacturing complexity
Solution Approach 1:
The magnetic circuit assembly is designed as a unified structure that supports both the vibration diaphragm of the loudspeaker and the bearing member of the vibration motor. The voice coil is positioned to interact with the magnetic field for both functions simultaneously, creating a single integrated assembly that simplifies manufacturing while maintaining functional independence.
3Reliability
If independent spaces are allocated for the loudspeaker/receiver and linear vibration motor, then each component has sufficient space for operation, but the space for other parts such as battery is squeezed
Solution Approach 1:
The bearing member is positioned within the magnetic circuit assembly in such a way that it utilizes the same magnetic field space as the loudspeaker/receiver. The vibration diaphragm and bearing member are arranged to operate in different spatial zones within the same assembly, allowing nested functionality that maximizes space utilization.
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 device reduces overall size, enhances structural stability, and ensures reliable operation, allowing it to be applied in devices with stringent size constraints while maintaining sound and vibration functions.
Implementation Method 1
the vibration assembly vibrates and produces sound in a first direction under the driving of the magnetic circuit assembly
Implementation Method 2
the coil unit is capable of driving the bearing member to vibrate in a second direction
Data Source
AI summary
The present disclosure belongs to the technical field of sound-electricity conversions, and provides a multifunctional sounding device and an electronic device. A sounding unit of the multifunctional sounding device includes a vibration assembly fixed to a housing and a magnetic circuit assembly having a magnetic gap, the magnetic circuit assembly is provided with a through hole at a central position, and the vibration assembly vibrates and produces sound in a first direction under a driving of the magnetic circuit assembly. A bearing member is movably connected to the housing through an elastic arm. The motor assembly includes a coil unit accommodated in the through hole and a motor magnet, the coil unit is connected to the bearing member, the motor magnet is connected to the magnetic circuit assembly, and the coil unit is capable of driving the bearing member to vibrate in a second direction.