Portable Radiographic Imaging Case Corner Reinforcement
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Solution Overview
Problem
Conventional portable radiographic imaging apparatuses have reduced rigidity and strength due to recesses in the corners of their cases, which can lead to damage from drop impacts, compromising the integrity of the device and its ability to produce high-quality images.
Innovation Solution
The use of a case with continuous fiber reinforced resin in the corners, where the carbon fiber layers are oriented from one side wall to the other, ensuring no breakpoint in the wall thickness direction, thereby enhancing the tensile strength and protecting the apparatus from impacts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If recesses are formed in the inner corners of the case to avoid contact with the base mount, then collision between the inside of the case and the base mount is reduced, but the rigidity and strength of the case walls are decreased
Solution Approach 1:
The patent applies local quality by forming recesses only in the inner corners of the case where they are least likely to be visible, while maintaining the full thickness and strength of the case walls in all other areas. This allows the case to avoid collision with the base mount in corner regions without compromising the overall structural integrity and strength of the case body.
Solution Approach 2:
The patent resolves the contradiction by transitioning from a two-dimensional wall thickness consideration to a three-dimensional corner geometry solution. The recesses are formed specifically in the corner regions along the inner perimeter, creating a localized geometric modification that avoids collision while preserving the main wall strength through selective placement rather than uniform thinning.
2Ease of operation
If the case is made highly portable, then ease of operation is improved, but the case becomes more susceptible to drop impacts
Solution Approach 1:
The patent applies beforehand cushioning by pre-forming recesses in the inner corners of the case that act as shock-absorbing features during drop impacts. When the case drops, these corner recesses make contact with the supporting surface first, cushioning the impact before it reaches the sensitive internal components and sensor panel, thereby protecting the portable device while maintaining its portability.
Solution Approach 2:
The patent converts the harmful effect of drop impacts into a beneficial protective mechanism by designing the corner recesses to deliberately contact the ground first during a drop. This transforms the potential harm of impact into a controlled cushioning action that protects the valuable sensor panel and internal components, turning the vulnerability of portability into a protective feature.
3Reliability
If corner strength is reinforced to prevent damage from drops, then reliability is improved, but the case complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the case into distinct functional zones: corner regions with recesses for impact absorption and protection, and main body regions with full wall thickness for structural strength. This segmented approach allows each zone to perform its specific function optimally without requiring complex reinforcement throughout the entire case structure.
Solution Approach 2:
The patent applies the inversion principle by removing material from the corner regions rather than adding reinforcement. Instead of making the corners more complex or bulky to strengthen them, the patent inverts the approach by creating recesses that both protect against impact and simplify the overall case structure, reducing material usage while improving reliability.
Data Source
AI summary
A portable radiographic imaging apparatus includes a sensor and a case that houses sensor panel. Radiation detector elements are arrayed two-dimensionally in the sensor panel. The case comprises a corner where two side walls are adjacent. The side walls are made of a continuous fiber reinforced resin that comprises one or more fiber layers oriented in a predetermined direction. The fiber layers are oriented in a direction from one to the other of the adjacent side walls in the corner. A breakpoint where the fiber layers are discontinuous over an entire thickness in a wall thickness direction is not present in an area of at least one of the corners.