Bone Conduction Speaker Clamp Structure for Repelling Magnets
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Solution Overview
Problem
Existing speaker assemblies, particularly those using bone conduction technology, face issues with structural instability and loosening, leading to potential failure of the transducer's conversion function, which affects reliability and service life.
Innovation Solution
A speaker assembly design featuring a clamp that clamps on the outer end surfaces of the magnetic circuit system, using a U-shaped abutment and connection portions to restrict relative displacement between annular magnets, enhancing structural stability and preventing loosening.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the magnetic circuit system uses stacked annular magnets to achieve bone conduction function, then the transducer can convert electrical energy to mechanical vibration, but the magnets may repel each other along the axial direction causing structural instability and loosening
Solution Approach 1:
The clamp applies a preliminary counteracting force to the repulsive force between adjacent annular magnets before the magnets can move apart. By clamping the outer end surfaces of the magnetic circuit system, the clamp pre-establishes a constraining force that opposes the axial repulsion, preventing loosening and maintaining structural stability throughout operation
Solution Approach 2:
The clamp is installed and configured to clamp the magnetic circuit system before operation begins. This preliminary action of securing the magnets in place ensures that the repulsive forces generated during operation do not cause displacement or loosening, as the structural constraint is already in place
2Stability of the object's composition
If the clamp is designed with U-shaped abutment portions to restrict relative displacement between magnets, then structural stability is improved, but the device complexity increases
Solution Approach 1:
The clamp is divided into distinct functional segments: abutment portions that contact the magnets, connection portions that provide structural support, and positioning features that ensure proper alignment. This segmentation allows each part to perform its specific function efficiently while maintaining overall structural stability without excessive complexity
Solution Approach 2:
The clamp serves multiple functions simultaneously: it constrains the magnetic circuit system against repulsive forces, provides structural support, enables assembly and disassembly, and maintains precise positioning. By designing a single component that performs these diverse functions, the overall device complexity is reduced compared to using multiple separate elements
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 clamp design effectively reduces the likelihood of loosening, improving structural stability, reliability, and extending the service life of the transducer by preventing relative displacement between annular magnets.
Implementation Method 1
the vibration transmission sheet connects the magnetic circuit system and the support to elastically suspend the magnetic circuit system
Implementation Method 2
the coil is disposed on the support and located within the magnetic circuit system
Implementation Method 3
the transducer includes a clamp and a magnetic circuit system... the at least two annular magnets are stacked along an axial direction of the magnetic circuit system
Data Source
AI summary
Speaker assemblies and earphones are provided. The speaker assembly includes a bone conduction speaker. The bone conduction speaker includes a transducer, and the transducer includes a clamp and a magnetic circuit system. The magnetic circuit system includes at least two annular magnets. The at least two annular magnets are stacked along an axial direction of the magnetic circuit system, and adjacent annular magnets in the at least two annular magnets are arranged to repel each other along the axial direction. The clamp is configured to clamp two outer end surfaces of the magnetic circuit system away from each other along the axial direction.