Deformable Ribs in Electronic Device Storage Case
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Solution Overview
Problem
Electronic device storage cases in motor vehicles often experience abnormal noises due to gaps between locking projection and hole portions, and substrate rattling during vibrations, which existing solutions fail to adequately address.
Innovation Solution
An electronic device storage case with a hollow box-shaped body featuring deformable ribs with slant surfaces that allow the substrate to make pressure contact, combined with locking projection and hole portions that are designed to fill gaps and prevent rattling through a locking mechanism that crushes fitting jut portions to secure the components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a male-female locking unit is used to join case members, then the case members are securely locked together, but gaps may form between the locking projection and locking hole due to manufacturing errors, causing abnormal noises during vibrations
Solution Approach 1:
A filling portion (intermediary element) is introduced between the locking projection and locking hole to fill gaps that form due to manufacturing errors. This filling portion acts as a mediator that eliminates the gap, preventing the locking components from making repeated contact during vibrations and thus suppressing abnormal noises while maintaining locking stability.
Solution Approach 2:
The locking projection is designed with a variable cross-sectional area that changes along its length, creating a crushing portion with a smaller cross-section that can be deformed. This parameter change allows the locking projection to adaptively fill gaps and maintain stable contact with the locking hole, preventing noise generation during vibrations.
2Object-affected harmful factors
If an elastic portion is added to bias case members apart, then gaps between locking components are eliminated through press-contact, but the substrate may still rattle within the storage case during vibrations
Solution Approach 1:
The inner surface of the case body is segmented into multiple inclined surfaces formed by deformable ribs, creating multiple contact zones along the substrate's insertion path. As the substrate is inserted, it sequentially contacts these inclined surfaces, which guide and secure the substrate in position, preventing rattling during vibrations.
Solution Approach 2:
The deformable ribs are designed with varying dimensions and orientations, creating inclined surfaces with different slopes and positions. These parameter variations allow the ribs to adaptively conform to the substrate's shape and secure it firmly, eliminating rattling noise while coexisting with the elastic portion that prevents locking noise.
3Ease of manufacture
If the case body is made as a simple hollow box structure, then manufacturing is easy and cost is low, but the substrate can move freely and generate abnormal noises during vibrations
Solution Approach 1:
The case body's inner surface is divided into multiple inclined surfaces formed by deformable ribs, transforming a simple hollow box into a structured containment system. These segmented ribs are integrated into the case body structure, maintaining ease of manufacture while providing multiple contact zones that secure the substrate and prevent rattling noise during vibrations.
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 solution effectively prevents abnormal noises by securely gripping the substrate and eliminating gaps between locking components, ensuring reliable noise suppression during vehicle vibrations.
Implementation Method 1
a plurality of deformable ribs 12a each having a slant surface 12b inclined inwards toward the bottom surface 11a, are provided on the body wall portions 12
Implementation Method 2
the locking projection portion and the locking hole portion make repeated contact with each other due to the vibrations generated in the running motor vehicle
Implementation Method 3
an elastic portion is provided in one of case members to elastically bias the case members away from each other when the case members are locked together
Data Source
AI summary
An electronic device storage case for use in storing a substrate therein, includes a hollow box-shaped case body. The case body includes an open surface with an opening, a bottom surface opposite to the opening and a sidewall extending upright from the peripheral edge of the bottom surface, wherein the sidewall of the case body including a plurality of deformable ribs each having a slant surface inclined inwards toward the bottom surface, and wherein the substrate is introduced into the case body through the opening and slidingly moves along the slant surface of each of the deformable ribs to make pressure contact with the slant surface.