Dual Elastic Assembly Sound Generation Device
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Solution Overview
Problem
Conventional sound generation devices face reliability issues with elastic connectors when the voice coil experiences large displacement, leading to potential breakage and device failure.
Innovation Solution
The sound generation device incorporates a dual elastic assembly system with first and second elastic connectors fixed at different positions in the height direction of the vibration unit, ensuring reliable connection and stability even during large displacements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If ordinary elastic connectors are used to prevent voice coil deviation, then the structure is simple and cost is reduced, but the reliability is low when the voice coil has large displacement
Solution Approach 1:
The elastic connector is divided into multiple segments (first elastic assembly and second elastic assembly) fixed at different positions in the height direction of the vibration unit. Each assembly has multiple elastic connectors arranged in parallel, creating a modular structure that distributes mechanical stress across multiple connection points, thereby improving reliability under large displacement conditions.
Solution Approach 2:
The patent transitions from a single-plane elastic connector arrangement to a multi-level three-dimensional configuration. The first and second elastic assemblies are positioned at different heights on the vibration unit, creating vertical layering. This spatial distribution in the height direction prevents interference between assemblies and maintains connection stability during large voice coil excursions.
2Reliability
If multiple elastic connectors are added to improve reliability, then the connection stability is enhanced, but the manufacturing process becomes more complex
Solution Approach 1:
The elastic connector system is segmented into first and second assemblies that can be manufactured independently and then assembled onto the vibration unit. Each assembly contains multiple elastic connectors that are structurally similar, allowing for standardized manufacturing processes and simplifying production while achieving the reliability benefits of multiple connection points.
3Reliability
If elastic connectors are positioned to avoid interference, then the reliability under large displacement is improved, but the space utilization is reduced
Solution Approach 1:
The patent resolves spatial constraints by utilizing the vertical height dimension of the vibration unit. The first elastic assembly is fixed at a first position and the second elastic assembly at a second position in the height direction, allowing both assemblies to coexist without horizontal interference. This vertical layering maintains compact footprint while providing multiple non-interfering connection paths for improved reliability.
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 enhances the reliability and stability of the sound generation device by providing multiple connection points and preventing interference between elastic assemblies, thus ensuring uniform vibration and improved centering effect.
Implementation Method 1
at least two elastic members. Each of the elastic members includes: a first elastic assembly having at least one first elastic connector
Data Source
AI summary
Disclosed are a sound generation device and an electronic apparatus. The sound generation device comprises: a support; a vibration unit; and at least two elastic member. Each of the elastic member comprises: a first elastic assembly having at least one first elastic connector connected to the support and the vibration unit; and a second elastic assembly having at least one second elastic connector connected to the support and the vibration unit. The first elastic assembly and the second elastic assembly are fixed at different positions in a height direction of a voice coil. The voice coil has a first end surface in the height direction. At least a portion of a first projection region of the first elastic assembly projected onto a plane where the first end surface is located is at outside of a second projection region of the second elastic assembly projected onto the first end surface.