Wearable Device Belt Segmentation for Fittability and Reliability
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Solution Overview
Problem
Wearable portable terminals face a trade-off between fittability and reliability, as increasing the number of flexible portions improves fittability but decreases reliability and increases the risk of damage from bending.
Innovation Solution
A wearable electronic device design featuring a non-flexible first and second belt connected by a flexible hinge, with a third belt having higher flexibility than the first two, allowing for an elliptical shape that enhances fittability while reducing the risk of damage and improving engagement mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the number of flexible portions is increased to improve fittability, then the wearable device can conform better to the body shape, but the reliability decreases and the device breaks more easily
Solution Approach 1:
The device is divided into multiple belt portions (first belt, second belt, third belt) with different flexibility characteristics. The first and second belts have lower flexibility to ensure reliability, while the third belt has higher flexibility to improve fittability. This segmentation allows each portion to serve its specific function without compromising overall device integrity.
Solution Approach 2:
Different portions of the device are assigned different flexibility properties based on their functional requirements. The first belt containing the display has lower flexibility to protect fragile components, while the third belt has higher flexibility to enhance comfort and fit. This local differentiation resolves the contradiction by optimizing each region's properties independently.
2Reliability
If non-flexible portions are increased to improve reliability, then the device becomes more durable and less prone to damage, but the fittability decreases
Solution Approach 1:
The device structure is segmented into rigid portions (first and second belts) and a flexible portion (third belt). This segmentation allows the non-flexible portions to provide structural integrity and reliability while the flexible third belt compensates for fittability, enabling the device to adapt to body contours without compromising durability.
Solution Approach 2:
Different flexibility characteristics are assigned to different local regions of the device. The first belt with the display unit has lower flexibility to ensure reliability, while the third belt has higher flexibility to improve fittability. This local quality differentiation allows simultaneous achievement of both reliability and adaptability.
3Stability of the object's composition
If the first belt overlaps the third belt when worn, then the engagement mechanism is improved and the device structure is stabilized, but the device complexity increases
Solution Approach 1:
The device is divided into three distinct belt portions with specific engagement relationships. The first belt overlaps the third belt when worn, creating a stable layered structure. This segmentation approach stabilizes the device composition through defined spatial relationships while keeping each individual belt portion relatively simple in structure.
Data Source
Figure 1~2
Figure 3
Figure 4A~4B
AI summary
A electronic device (100) according to the present disclosure includes a first belt (10), front surface of the first belt (10) being provided with a display having a curved display face; a second belt (30); a hinge (20) that connects a first end of the first belt (10) to a first end of the second belt (30). A shape of a space formed by the first belt (10) and the second belt (30) is an elliptical shape when the electronic device (100) worn around a subject is viewed from a side. The hinge (20) has higher flexibility than the first belt (10) and the second belt (30). The electronic device (100) has a first engagement unit (60) provided at a second end and a rear surface of the first belt (10), and in a region where the elliptical shape has smaller curvature than other regions. The electronic device (100) has a second engagement unit (70) provided at an outer side of the second belt (30) and engaging with the first engagement unit (60).