Air-Injected Bulged Electronic Device Case Design
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Solution Overview
Problem
Existing diary and electronic device cases lack advanced designs and additional functions, particularly in providing rigidity and elasticity to withstand external impacts while also serving as functional accessories like pillows or wrist supports.
Innovation Solution
A diary or electronic device case design featuring bulged surfaces on both the top and bottom achieved by injecting air into elastic first and second synthetic resins, with a third resin interposed between them, and a groove in the joint panel for air injection, allowing the cover to expand and provide enhanced rigidity and elasticity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If air is injected into elastic synthetic resins to create bulged surfaces, then the case gains improved rigidity and elasticity for withstanding external impacts, but the device complexity increases due to multiple resin layers and air injection system
Solution Approach 1:
The case is divided into multiple synthetic resin layers (first elastic resin, second elastic resin, and third rigid resin) with distinct functions. Each layer contributes differently to the overall performance - the elastic layers provide impact absorption and recovery, while the rigid layer provides structural support, resolving the contradiction between strength and complexity through functional segmentation
Solution Approach 2:
The air injection system is nested within the multi-layer resin structure, with air channels integrated into the joint panel and resin layers. The bulged surfaces are formed by air pockets nested between the resin layers, creating a compact structure that achieves improved strength without proportionally increasing external complexity
2Stability of the object's composition
If multiple synthetic resins are joined at multiple points to allow air injection, then the case achieves bulged surfaces on both top and bottom for better solidness, but the manufacturing precision requirements increase
Solution Approach 1:
The joint panel is pre-formed with integrated air channels and injection ports before the resin layers are assembled. The multiple joining points are pre-positioned and aligned, allowing air to be injected through the joint panel into the space between resin layers. This preliminary preparation of the air injection pathway enables the creation of symmetric bulged surfaces on both top and bottom without requiring extremely high manufacturing precision during final assembly
Solution Approach 2:
The third synthetic resin is selectively placed in specific locations (either between the first resin and joint panel or on the second resin) to provide localized rigid support. This local quality approach allows the case to achieve solidness in critical areas while maintaining flexibility in other regions, reducing overall manufacturing precision requirements
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 results in a more solidly constructed case with improved rigidity and elasticity, capable of withstanding external impacts and offering additional functionality as a pillow or wrist support, while maintaining aesthetic appeal.
Implementation Method 1
air is injected into a space between the first synthetic resin and the second synthetic resin to allow the cover to have a bulged surface
Implementation Method 2
an elastic first synthetic resin laid on the joint panel; an elastic second synthetic resin laid on the first synthetic resin
Data Source
AI summary
A fabrication method for a diary or electronic device cover, the fabrication method includes the steps of: disposing an elastic first synthetic resin on a joint panel; disposing a second synthetic resin on the first synthetic resin; disposing a third synthetic resin different from the first synthetic resin and the second synthetic resin in material; joining the first synthetic resin, the second synthetic resin, and the third synthetic resin at a plurality of points; and injecting air into a space between the first synthetic resin and the second synthetic resin to allow the cover to have a bulged surface.