Polymeric Bone Conduction Assembly for Stable Lightweight Vibration
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Solution Overview
Problem
Traditional bone conduction sound transmission devices face issues such as loose connections and detachment of sound generating units due to their weight, leading to sound breakage and cumbersome assembly processes.
Innovation Solution
A polymeric bone conduction sound transmission component with a housing that directly mounts the coil and magnetic circuit structure, allowing them to vibrate independently, reducing overall weight and simplifying assembly, and incorporating a mounting member for direct vibration transmission to the housing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the sound generating unit is assembled with multiple components in an inner housing and fixed by gluing, then the device can be manufactured with traditional assembly methods, but the heavy weight of the sound generating unit causes loose connections and detachment during long-term vibration
Solution Approach 1:
The sound generating unit is segmented into separate components (coil, magnetic circuit structure, etc.) that are directly mounted on the outer housing rather than being assembled as a heavy unit in an inner housing. This segmentation reduces the weight of the vibrating components while maintaining functionality.
Solution Approach 2:
The inner housing is extracted/removed from the structure. The components are directly mounted on the outer housing, eliminating the intermediate inner housing that added weight and complexity to the vibrating assembly.
2Ease of manufacture
If the sound generating unit is assembled in an inner housing that is then fixed in the outer housing, then the assembly process follows traditional manufacturing methods, but the process is cumbersome and increases device volume
Solution Approach 1:
The inner housing and outer housing are merged into a single structure. The components are directly mounted on the outer housing, eliminating the need for a separate inner housing and its associated assembly steps.
Solution Approach 2:
The components are pre-mounted directly on the outer housing during the housing manufacturing process, eliminating the subsequent assembly step of fixing the inner housing containing the components into the outer housing.
3Loss of energy
If the entire sound generating unit vibrates as a whole, then the traditional structure can be maintained, but the heavy weight increases the risk of loose connection and energy loss
Solution Approach 1:
The vibrating components are segmented and separated from non-vibrating components. Only the necessary lightweight components (coil or magnetic circuit structure) vibrate, reducing the total mass involved in vibration and minimizing energy loss.
Solution Approach 2:
The system is designed to allow selective vibration of different components (coil or magnetic circuit structure) while keeping other components stationary. This dynamic configuration optimizes vibration efficiency and reduces energy loss.
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 design reduces the risk of loose connections, enhances sound transmission efficiency, and simplifies assembly while maintaining a compact device size, with improved sound quality and reduced energy loss.
Implementation Method 1
the sound generating unit comprises a coil and a magnetic circuit structure... during operation of the device, only some of the components vibrate
Implementation Method 2
the vibration of the vibrating component is transmitted directly to the housing and then to the skull of the wearer by the mounting member, resulting in a more direct transmission process and less energy loss
Data Source
AI summary
The present invention discloses a device of a polymeric bone conduction sound transmission component, a headset and a headset system, wherein a plurality of components of a sound generating unit are directly mounted on a housing; during operation of the device, only some of the components vibrate, and weight of the vibrating components is small, which can reduce the possibility of loose connection of the vibrating components.