Electronic Housing Case Engaging Projections Assembly
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Solution Overview
Problem
Existing electronic apparatuses, such as memory cards and SSDs, have complex production processes and high production costs due to the use of multiple parts and assembly methods like welding, screwing, or riveting for fixing the lower and upper case portions, which complicates production and reduces efficiency.
Innovation Solution
A housing case design where the lower and upper case portions are fixed using engaging projections and holes, with inwardly bent tip end portions acting as urging force generating portions, allowing for a simplified assembly process without the need for additional parts or complex assembly methods, and utilizing a nonmagnetic metal material for magnetic shielding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If welding, screwing, or riveting is employed to fix lower and upper case portions, then the mounting circuit board can be securely protected, but the number of parts increases and production cost rises
Solution Approach 1:
The patent merges the lower case portion and upper case portion into a single integrated structure formed by bending a plate-like member, eliminating the need for separate fixing components. The engaging projections and holes are formed directly on the bent portions of the same plate, reducing the total number of parts while maintaining the protective function of the housing case.
2Reliability
If welding, screwing, or riveting is employed to fix lower and upper case portions, then secure protection is achieved, but production steps become complicated and production time is prolonged
Solution Approach 1:
The patent segments the plate-like member into distinct functional portions: a lower case portion, an upper case portion, and bent portions that form engaging structures. This segmentation allows each portion to be optimized for its specific function while being manufactured as a single piece, simplifying production steps and improving assembly efficiency.
Solution Approach 2:
The engaging projections and holes are pre-formed on the bent portions of the plate-like member during the manufacturing process, eliminating the need for separate assembly steps. The structure is prepared in advance with all necessary fixing features already in place, enabling rapid assembly without requiring welding, screwing, or riveting operations.
3Reliability
If multiple parts and assembly methods are used to fix case portions, then secure fixation is achieved, but production cost is raised
Solution Approach 1:
The patent combines multiple functions into a single plate-like member: the lower case portion, upper case portion, and fixing structures (engaging projections and holes) are all formed from one piece. This merging eliminates the need for separate components and reduces manufacturing costs by eliminating welding, screwing, or riveting operations while maintaining secure fixation.
Solution Approach 2:
The bent portions of the plate-like member automatically form engaging projections and holes that enable self-fixation of the lower and upper case portions. The structure serves its own fixing function without requiring external fasteners or complex assembly processes, reducing production costs while ensuring reliable fixation.
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
This design reduces the number of parts required, simplifies the assembly process, lowers production costs, and enhances production efficiency while maintaining magnetic shielding properties, enabling mass production with improved user operability and heat dissipation.
Implementation Method 1
tip end portions of the urging force generating portions or portions in vicinities of the tip end portions butt against and slide over the planar portion of the upper case portion to be further bent, thereby generating an urging force
Implementation Method 2
a nonmagnetic metal material for magnetic shielding
Data Source
AI summary
A housing case housing an electronic circuit board, includes: a lower case portion which internally houses a circuit board for mounting electronic components; and an upper case portion which is externally fitted to the lower case portion to form a box-like member. Each of the lower case portion and the upper case portion includes a planar portion, and sidewall portions which stand from the peripheral edge of the planar portion. The planar portion and the sidewall portions are formed by using a plate-like member made of a metal material. Engaging projections which are outwardly projected are disposed on the sidewall portions of the lower case portion. Engaging holes which are passed through the sidewall portions of the upper case portion are disposed in the sidewall portions, in positions corresponding to the engaging projections of the lower case portion. The upper case portion is externally fitted to the lower case portion, and the engaging projections are engaged with the engaging holes, whereby the lower case portion and the upper case portion are fixed to each other.