Cartridge Case Hinge Offset for Drop Shock Resistance
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Solution Overview
Problem
The existing cartridge receiving cases have a high risk of damage or rupture due to shock when dropped, as the thin hinges are prone to collision with the droppage surface, leading to reduced shock resistance.
Innovation Solution
The design features a cartridge receiving case with a pair of parallel thin hinges formed as curved portions, where one hinge is positioned deviated from the continuous portion between the rear plate and case sections, and the other from the lid and rear plate sections, along with reinforcement protrusions and cutout sections on the rear plate to prevent collision, and incorporates a lock piece and elastic deformation sections for enhanced stability and shock resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the thin hinge is installed at the corner (continuous portion between sections), then the structural simplicity is maintained, but the shock resistance deteriorates due to easy collision with droppage surface
Solution Approach 1:
The hinge position is moved from the corner (2D plane intersection) to a position offset in the depth direction (3D space), specifically to a location that is not at the corner of the housing. This dimensional shift removes the hinge from the collision path during droppage while maintaining the simple hinge structure.
2Ease of manufacture
If the thin hinge is positioned at the corner, then the manufacturing ease is maintained, but the strength deteriorates due to large shock application during drops
Solution Approach 1:
The hinge is positioned at a specific location on the housing that has different local characteristics compared to the corner. The offset position provides better structural support and shock distribution, enhancing the local strength at the hinge location without complicating the overall manufacturing process.
Data Source
AI summary
Provided is a cartridge receiving case including a case section in which a cartridge is inserted and disposed, a lid section configured to be opened and closed with respect to the case section and to cover the cartridge disposed in the case section upon closing, and a rear plate section configured to connect the case section and the lid section. The case section, the lid section, and the rear plate section are integrally formed. A pair of parallel thin hinges are formed as curved portions when the lid section is opened and closed with respect to the case section. One of the thin hinges is formed at a position deviated with respect to a continuous portion between the rear plate section and the case section. The other thin hinge is formed at a position deviated with respect to a continuous portion between the rear plate section and the lid section.