Inclined Grab Bar Structure for Rope Prevention and Drainage
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Solution Overview
Problem
Conventional grab bars are ineffective in preventing suicide attempts and pose health risks due to fluid accumulation, as they do not fully inhibit the use of ropes or wires and can trap fluids, leading to bacterial growth in institutional settings.
Innovation Solution
A grab bar design featuring an extending member with an inclined upper edge and end members that prevent rope looping, combined with a mounting flange for secure attachment, which also facilitates drainage to prevent fluid accumulation and inhibit injury attempts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an underside plate is added to prevent rope looping, then suicide prevention capability is improved, but fluid drainage capability deteriorates due to accumulation atop the plate
Solution Approach 1:
The underside plate is segmented into multiple drainage apertures that allow fluid to pass through while maintaining the plate's suicide prevention function. This segmentation resolves the contradiction by enabling fluid drainage without compromising the structural integrity needed to prevent rope looping.
Solution Approach 2:
Drainage apertures serve as intermediary elements that mediate between the conflicting requirements of suicide prevention and fluid drainage. The apertures allow fluid passage while the surrounding plate structure maintains its protective function.
2Object-generated harmful factors
If drainage gaps are created between the underside plate and wall or endplates, then fluid drainage capability is improved, but suicide prevention capability deteriorates as ropes can pass through the gaps
Solution Approach 1:
Rather than creating continuous drainage gaps, the solution segments drainage into discrete apertures within the underside plate. This segmentation allows fluid passage while maintaining continuous coverage to prevent rope insertion.
Solution Approach 2:
The underside plate has different local qualities: solid areas for suicide prevention and localized apertures for drainage. This local differentiation resolves the contradiction by providing drainage functionality only where it doesn't compromise safety.
3Reliability
If the grab bar structure is made enclosed to prevent item storage, then security is improved, but manufacturing complexity increases
Solution Approach 1:
The longitudinal bar and endplates are merged into an integrated enclosed structure. This merging achieves security against item storage while simplifying manufacturing compared to assembling multiple separate components.
Solution Approach 2:
The enclosed structure serves multiple functions: it prevents item storage, provides structural support, and maintains suicide prevention capability. This multi-functionality reduces the need for additional components, simplifying manufacturing.
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 effectively prevents suicide attempts by inhibiting rope use and promotes fluid drainage, reducing the risk of bacterial growth and ensuring a safer, more hygienic environment.
Implementation Method 1
An extending member attached to the user support member and dimensioned to extend between the projecting side and an attachment side of the grab bar opposite the projecting side, whereby an upper edge of the grab bar extends from the extending member upwardly and away from the attachment side at a first end of the grab bar
Data Source
AI summary
A grab bar for projecting from a structure to a projecting side of the grab bar includes a user support member operable to support a user, the user support member being disposed at the projecting side of the grab bar; and an extending member attached to the user support member and dimensioned to extend between the projecting side and an attachment side of the grab bar opposite the projecting side, whereby an upper edge of the grab bar extends from the extending member upwardly and away from the attachment side at a first end of the grab bar and extends upwardly and away from the projecting side at a second end of the grab bar opposite the first end.