Rotary Strap With Foldable Adjuster For Variable Thickness
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Solution Overview
Problem
Existing straps for portable terminals often inhibit rotation in vertical and horizontal directions and become excessively thick when various electronic components are attached, particularly when switching between normal and large-capacity battery packs, leading to portability issues.
Innovation Solution
A strap design featuring a base with a rotary plate, an annular holding portion, and an adjuster portion that can be folded or deployed to adjust thickness, allowing for smooth rotation and preventing excessive thickness, even with different thicknesses of electronic components attached.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the strap is designed with a fixed structure to maintain stability, then the attachment reliability is improved, but the adaptability to different battery pack thicknesses deteriorates
Solution Approach 1:
The adjuster portion is designed with a foldable structure that can change its distance from the terminal rear surface. When a thick large-capacity battery pack is attached, the foldable portion can be folded to increase the distance, preventing the strap from bending. When a thin normal battery pack is attached, the foldable portion is extended to maintain a compact thickness. This dynamic adjustment capability allows the strap to adapt to different battery pack thicknesses while maintaining attachment reliability.
2Adaptability or versatility
If the strap thickness is increased to accommodate large-capacity battery packs, then the adaptability to different battery packs is improved, but the portability deteriorates
Solution Approach 1:
The foldable portion of the adjuster can be extended or folded based on the battery pack thickness. When a thin normal battery pack is attached, the foldable portion is extended to keep the overall strap thickness compact, maintaining portability. When a thick large-capacity battery pack is attached, the foldable portion is folded to prevent the strap from bending, ensuring adaptability. This dynamic structure resolves the contradiction between adaptability and portability.
3Ease of manufacture
If the strap structure is simplified to reduce component numbers, then the ease of manufacture is improved, but the ability to adjust for different device thicknesses deteriorates
Solution Approach 1:
The adjuster portion is segmented into a fixed portion and a foldable portion that can move relative to each other. This segmentation allows the strap to adjust its thickness while maintaining a relatively simple overall structure. The foldable portion can be folded or extended based on the battery pack thickness, providing adaptability without requiring multiple different strap types or complex adjustment mechanisms.
Data Source
AI summary
A strap includes a base having a plate shape and detachably attached to a terminal rear surface of a portable terminal, a rotary plate attached to a base front surface of the base so as to be rotatable around a rotation axis perpendicular to the base front surface, an annular holding portion fixed to a rotary plate front surface of the rotary plate and into which a palm portion is inserted from a finger, and an adjuster portion having a foldable portion and fixed to the base rear surface of the base. The foldable portion varies a distance perpendicular to the base rear surface from the base rear surface of the base.