Protective Case Elastic Beads Triangular Support
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Solution Overview
Problem
Conventional protective cases for phones and tablets are inconvenient to use due to fixed horizontal placement, high friction leading to material loss and instability, and limited support area, making them uncomfortable and durable issues.
Innovation Solution
A protective case design featuring a main case with a circular mounting groove and elastic positioning beads, a rotatable outer cover plate with reduced contact area, a foldable support forming a triangular structure, and a handle for improved portability and usability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the rotating piece directly contacts side walls of through holes to enable rotation, then rotation function is achieved, but friction is large causing material loss and instability
Solution Approach 1:
The patent introduces a rotating piece that is inserted into a through hole but does not directly contact the side walls. Instead, the rotating piece rotates within the through hole with reduced contact, acting as an intermediary element that enables rotation while minimizing friction and material loss between the rotating component and the housing structure.
2Ease of operation
If gap is defined between rotating piece and side walls to enable easy rotation, then rotation ease is improved, but rotating piece waggles causing inconvenience
Solution Approach 1:
The patent applies local quality by providing different clearance conditions at different locations. The rotating piece has a specific shape that allows it to rotate smoothly within the through hole with minimal contact at certain points while maintaining stability. The local geometry of the rotating piece and through hole are designed to provide just enough contact for stability while allowing easy rotation.
3Ease of operation
If support piece is arc-shaped to provide support function, then support capability is achieved, but contact area with desk is small resulting in unstable support
Solution Approach 1:
The patent transitions from a two-dimensional arc-shaped support piece to a three-dimensional triangular support structure. By forming a triangular configuration with multiple support pieces, the design increases the contact area with the desk surface and distributes the load across multiple points, significantly improving support stability while maintaining the foldable support function.
4Device complexity
If fixed structure is used to directly connect with phone or tablet, then structural simplicity is maintained, but device can only be placed horizontally limiting usability
Solution Approach 1:
The patent transforms the fixed horizontal placement structure into a dynamic, multi-position support system. The foldable support pieces can be extended to create a triangular support structure, allowing the device to be placed at various angles (horizontal, inclined, or vertical positions). This dynamic structure maintains relative simplicity while providing adaptability for different usage scenarios.
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 enhances user convenience by allowing vertical placement, reducing friction and material loss, providing stable support, and making the case more durable and portable.
Implementation Method 1
Elastic positioning beads are arranged on an inner wall of the mounting groove
Data Source
AI summary
A protective case for an electronic device includes a main case, an outer cover plate, an inner cover plate, a support, a support plate, and a handle. A front surface of the main case recesses to define an accommodating groove configured to accommodate the electronic device. A middle portion of a bottom surface of the accommodating groove is communicated with a middle portion of a rear surface of the main case to define a mounting groove. Elastic positioning beads are arranged on an inner wall of the mounting groove. By arranging the support plate and support in the receiving groove, the triangular support structure is formed when the support plate and the support are opened. By arrangements of the elastic positioning beads, a contact area between the outer cover plate and the mounting groove is reduced.