Clamshell Tablet Case Gear Ring Stand Mechanism
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Solution Overview
Problem
Conventional clamshell protective cases for digital electronic products lack effective stand positioning, wear resistance, and ease of replacement, failing to meet user needs.
Innovation Solution
A clamshell tablet protective case design featuring a stand assembly with a gear ring and metal dome for adjustable angle support, a support strip system with buttons and buckles for easy positioning and locking, and a modular structure allowing separate use and replacement of components for cost savings and durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional protective cases use fixed support structure, then manufacturing is simple, but stand positioning effectiveness is poor and adjustment is difficult
Solution Approach 1:
The support structure transitions from a fixed state to a movable state through the metal dome and gear ring mechanism. The lower stand cover can rotate relative to the convex ring, allowing the support angle to be dynamically adjusted. This resolves the contradiction by making the structure adaptable while maintaining manufacturing simplicity through modular components.
Solution Approach 2:
The support function is segmented into independent components: the lower stand cover, upper stand cover, metal dome, and gear ring. This segmentation allows each component to be optimized independently - the metal dome provides wear-resistant rotation while the gear ring provides positioning, resolving the contradiction between reliability and complexity.
2Ease of repair
If protective cases use integrated structure, then durability is high, but replacement and repair are difficult
Solution Approach 1:
The protective case is divided into separable modules: protective case assembly and stand assembly. The stand assembly can be completely removed from the protective case assembly through the connecting grooves and studs, allowing easy replacement of worn components while maintaining structural integrity when assembled. This resolves the contradiction between ease of repair and structural strength.
Solution Approach 2:
The modular design enables individual components to be discarded and replaced independently. If the stand assembly wears out, only the stand assembly needs to be replaced rather than the entire protective case, making repair cost-effective and convenient while maintaining overall structural integrity.
3Ease of manufacture
If protective cases lack modular design, then manufacturing is simpler, but replacement of parts is costly and inconvenient
Solution Approach 1:
The protective case is divided into separable modules: protective case assembly and stand assembly. The stand assembly can be completely removed from the protective case assembly through the connecting grooves and studs, allowing easy replacement of worn components while maintaining manufacturing simplicity through modular components. This resolves the contradiction between ease of manufacture and ease of repair.
4Reliability
If metal dome contacts gear ring teeth for positioning, then wear resistance improves, but manufacturing precision requirements increase
Solution Approach 1:
The metal dome automatically engages with the gear ring teeth through elastic deformation when rotating the lower stand cover. The elastic material of the metal dome provides self-adjusting contact with the gear teeth, reducing the need for extremely tight manufacturing tolerances while maintaining reliable positioning and high wear resistance.
Data Source
AI summary
A protective case includes a protective case assembly and a stand assembly disposed in the protective case assembly. The protective case assembly includes a bottom cover. A convex ring is arranged at one side of the bottom cover and a gear ring is arranged on the inner circle of the convex ring. A metal dome works with the gear ring to adjust the angle of the lower stand cover. Both the stand assembly and the protective case assembly can be disassembled, separately used, and separately replaced in case of damage. A support strip after being flipped over is positioned and unlocked via a button. The support strip is locked by a positioning buckle when recovery.