Vibration Transmission Sheet Linkage Design for Longer Life
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Solution Overview
Problem
Existing bone-conducting loudspeakers have limited deformation space for vibration transmission sheets due to constrained structural dimensions, leading to poor durability and a shorter lifespan.
Innovation Solution
A vibration transmission sheet design featuring a central fixing portion, an annular fixing portion, and a linkage assembly with specific dimensions and configurations to enhance deformation space and elastic deformation capability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the structural dimensions are constrained, then the device size is reduced, but the deformation space of the vibration transmission sheet is limited
Solution Approach 1:
The linkage assembly extends in multiple directions from the central fixing portion, utilizing spatial arrangement to increase deformation space without proportionally increasing overall structural dimensions. The linkages radiate outward to form a star-like pattern, effectively using dimensional expansion in the plane of the vibration transmission sheet.
2Reliability
If the linkage assembly is optimized for deformation space, then the elastic deformation capability is improved, but the structural complexity increases
Solution Approach 1:
The linkage assembly is divided into multiple independent linkages (at least two) that are symmetrically arranged around the central fixing portion. Each linkage operates independently to provide deformation capability, with the symmetric arrangement ensuring balanced force distribution and improved durability without requiring complex integration.
3Reliability
If the linkage width is increased, then the elastic deformation capability is enhanced, but the area occupied by the linkage assembly increases
Solution Approach 1:
The linkages are positioned to extend toward the periphery of the vibration transmission sheet, utilizing the available area more efficiently. The symmetric arrangement allows the linkages to be optimally spaced to maximize deformation capability while minimizing the total area occupied, with each linkage having appropriate width for its function.
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 improved design increases deformation space and enhances the elastic deformation capability of the vibration transmission sheet, resulting in improved durability and lifespan of the bone-conducting loudspeaker.
Implementation Method 1
the linkage assembly is configured to elastically constrain relative movement between the voice coil assembly and the magnet assembly along a central axis direction of the bone-conducting loudspeaker
Data Source
AI summary
The present disclosure relates to a vibration transmission sheet (113), a bone-conducting loudspeaker (11), and an earphone (100). The vibration transmission sheet (113) comprises a central fixing portion (1131) manufactured from a processed sheet, an annular fixing portion (1132) around a periphery of the central fixing portion (1131), and a linkage assembly (1133) connected between the central fixing portion (1131) and the annular fixing portion (1132). An inner ring edge (1132a) of the annular fixing portion (1132) has a first direction (W1) and a second direction perpendicular (W2) to each other. The linkage assembly (1133) includes two linkages (1134). Each of the two linkages (1134) includes an outer edge (1135) toward the inner ring edge (1132a) and an inner edge (1136) away from the inner ring edge (1132a). An extension component of the outer edge (1135) extends along the first direction (W1) is greater than or equal to one-half of a dimension of the inner ring edge (1132a) along the first direction (W1). A width of the linkage (1134) is greater than or equal to one-tenth of a dimension of the inner ring edge (1132a) along the second direction (W2). By adopting the above design, the extension length of the linkage (1134) can be effectively increased, thereby improving the durability and lifespan of the linkage (1134).