Bone Conduction Speaker Clamp Structure Against Magnet Loosening
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Solution Overview
Problem
Existing speaker assemblies, particularly those with bone conduction speakers, face issues of structural instability and loosening, leading to potential failure of the transducer's conversion function, which affects reliability and service life.
Innovation Solution
A clamp design that clamps on the outer end surfaces of the magnetic circuit system, using a U-shaped abutment and connection portions to restrict the relative displacement of 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 with repelling arrangements to achieve bone conduction function, then the transducer's conversion function is enabled, but structural instability and loosening occur leading to potential failure
Solution Approach 1:
The clamp serves as an intermediary component that mediates between the repelling annular magnets and the support structure. It provides a stable mounting platform that counteracts the repelling forces, preventing loosening while enabling the magnets to maintain their functional arrangement for bone conduction transduction.
Solution Approach 2:
The clamp is designed with abutment portions that preemptively counteract the repelling forces between annular magnets before loosening can occur. By providing preliminary mechanical constraint against the known repelling direction, the system prevents structural instability and potential failure of the transducer conversion function.
2Adaptability or versatility
If annular magnets are arranged to repel each other along the axial direction to enable bone conduction, then the transducer function is achieved, but relative displacement occurs causing loosening
Solution Approach 1:
The clamp acts as an intermediary that provides a stable reference frame for the repelling annular magnets. By constraining the magnets within the clamp's abutment portions, it prevents excessive relative displacement while allowing the magnets to maintain their repelling arrangement necessary for bone conduction transduction.
3Reliability
If the magnetic circuit system is designed with stacked annular magnets for bone conduction, then the transducer conversion capability is achieved, but loosening and potential failure occur reducing service life
Solution Approach 1:
The clamp design incorporates abutment portions that preemptively counteract loosening forces before they can cause failure. By providing preliminary mechanical constraint against the repelling forces between annular magnets, the system prevents progressive loosening and extends the service life of the bone conduction transducer.
Solution Approach 2:
The clamp serves as a protective intermediary between the magnetic circuit system and the external environment, shielding the stacked annular magnets from forces that would cause loosening. This intermediary structure preserves the transducer's conversion function throughout its intended service life.
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 and enhances the structural stability, reliability, and service life of the transducer by restricting the relative displacement of annular magnets.
Implementation Method 1
the vibration transmission sheet connects the magnetic circuit system and the support to elastically suspend the magnetic circuit system at a periphery of the support
Implementation Method 2
adjacent annular magnets in the at least two annular magnets are arranged to repel each other along the axial direction
Implementation Method 3
the coil is disposed on the support and located within 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.