Body Compressor Band with Localized Clip Rigidity
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Solution Overview
Problem
Conventional blood pressure measurement devices face difficulties in attachability due to high pulling strength requirements, loose contact issues, and discomfort caused by skin pinching prevention tags and explanatory note films during the winding process.
Innovation Solution
A body compressor design with a metal clip fixed closer to the center of the band-like body, reducing friction and increasing rigidity only at the metal clip-fixing position, and using a reinforcing member to enhance the skin pinching prevention tag's bending rigidity, allowing smoother winding with reduced force and preventing loose contact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the metal clip is fixed at the conventional position (farther from center), then the band-like body has sufficient flexibility for winding, but the required pulling strength increases and loose contact occurs
Solution Approach 1:
The patent applies local quality by increasing the rigidity of the band-like body specifically at the metal clip-fixing position (near the center) while maintaining flexibility in other regions. This is achieved by adding a reinforcing member that locally enhances stiffness where the metal clip is fixed, reducing the pulling strength required during winding without compromising the overall flexibility needed for smooth winding operation.
2Force
If the metal clip is fixed closer to the center with increased rigidity, then the required pulling strength decreases, but the structure becomes more complex
Solution Approach 1:
The reinforcing member is strategically positioned only at the metal clip-fixing position where increased rigidity is needed, rather than making the entire band-like body rigid. This localized reinforcement reduces the required pulling strength to 1/3 or less of conventional designs while adding minimal structural complexity, as the reinforcing member is confined to a specific region rather than the entire structure.
3Object-affected harmful factors
If the skin pinching prevention tag is made rigid to prevent skin pinching, then skin protection improves, but the band-like body becomes difficult to wind smoothly
Solution Approach 1:
The patent differentiates the rigidity of different regions of the band-like body: the skin pinching prevention tag portion maintains lower rigidity to allow smooth winding and bending, while the metal clip-fixing position (near the center) has increased rigidity through the reinforcing member. This local differentiation enables the skin protection function to be maintained without compromising winding smoothness, as the rigid reinforcing member is positioned away from the tag region.
Data Source
AI summary
A body compressor 1 is provided with a fluid bag 2, a band-like body 3 and a metal clip 4, wherein a fixed part 42 of the metal clip 4 is attached such that it is positioned above the outer surface of a skin pinching prevention tag part 5, and the skin pinching prevention tag part 5 has a reinforcing member 6 which allows the bending rigidity of a center-side part 51 and an intermediate part 52 to be higher than that of a front-side part 53.