Radiographic Casing Slanted Ridge Water Seal
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Solution Overview
Problem
Portable radiographic image capturing apparatuses face challenges in maintaining water resistance, especially when used in medical settings where they may be exposed to body fluids, and reducing size without compromising water-resistant capabilities.
Innovation Solution
A casing design with a slanted ridge that compresses a water-resistant member, allowing for reduced thickness and improved water resistance, along with a fastening mechanism that prevents screws from catching on patients, ensuring effective insertion and water sealing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the portable radiographic image capturing apparatus is made thinner to reduce its size, then the overall dimensions are reduced, but the water-resistant capability deteriorates because there is insufficient space to house a water-resistant member
Solution Approach 1:
The patent employs a thin film water-resistant member (seal member) that can be effectively compressed by the ridge structure. This flexible film approach allows adequate water resistance in a reduced thickness configuration, as the film can be tightly sealed when compressed by the ridge without requiring large internal space
Solution Approach 2:
The ridge structure with its curved, slanted outer side surface efficiently compresses the water-resistant member toward the top plate. This geometric form maximizes the sealing pressure and contact area between the ridge and the water-resistant member, ensuring effective sealing in a compact configuration
2Strength
If screws are used to fasten the cover and side wall, then the structural integrity is improved, but the ease of insertion deteriorates because screws may catch on patients during insertion between subject and bed
Solution Approach 1:
The patent removes the screw fastening mechanism from the insertion path by positioning all fastening elements on the rear face, which is inserted first. This extraction of the problematic screw heads from the patient-contact surface eliminates the catching issue while preserving the structural integrity provided by screw fastening
Solution Approach 2:
The patent inverts the conventional insertion sequence by having the rear face (with screw holes) inserted first, followed by the cover. This reversal places the screw fastening operation after insertion begins, preventing screws from catching on patients during the critical insertion phase
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 water resistance and ease of insertion between a patient and bed, maintaining effective sealing while reducing the overall thickness of the apparatus.
Implementation Method 1
The second side has a ridge for pressing and deforming the water-resistant member toward the top plate. The ridge has a slanted outer side surface.
Data Source
AI summary
A portable radiographic image capturing apparatus includes a casing having a front face including a top plate and a rear face. The rear face is fitted in the front face such that second sides of the rear face are disposed inside of first sides of the front face. Water-resistant members are disposed in corner portions that are formed in the front face. The second sides have ridges for pressing and elastically deforming the water-resistant members toward the top plate. The ridges have slanted outer side surfaces.