Vibration Transmission Sheet Linkage Design for Greater Deformation Space
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Solution Overview
Problem
Existing bone-conducting loudspeakers have limited deformation space within constrained structural dimensions, leading to poor durability and a shorter lifespan.
Innovation Solution
A vibration transmission sheet with a central fixing portion, an annular fixing portion, and a linkage assembly, featuring extended linkages and increased width, enhancing 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 linkage assembly is limited resulting in poor durability
Solution Approach 1:
The linkage assembly extends in multiple directions from the central fixing portion, with linkages having extension components in both first and second directions. This multi-dimensional arrangement maximizes the use of available deformation space within the constrained structural dimensions, allowing the linkage to achieve sufficient travel distance and deformation capacity without increasing the overall device footprint, thereby improving durability and lifespan.
2Strength
If the linkage width is increased, then the elastic deformation capability is improved, but the structural dimensions are exceeded
Solution Approach 1:
The linkage assembly features varying width characteristics at different locations. The linkage has a width in the second direction that is greater than or equal to one-tenth of the dimension of the inner ring edge along the second direction, providing sufficient elastic deformation capability where needed. The extension component in the first direction is greater than or equal to one-half of the dimension of the inner ring edge along the first direction. This localized optimization of dimensions at critical areas allows the linkage to achieve necessary strength and elasticity without uniformly increasing all structural dimensions.
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 design provides greater deformation space and improved durability and lifespan of the linkage assembly.
Implementation Method 1
the linkage assembly includes two linkages, each of the two linkages includes an outer edge toward the inner ring edge and an inner edge away from the inner ring edge
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).