Post on 15-Jan-2016
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PSU / Keen MobilityPSU / Keen Mobility
Expandable WheelchairExpandable WheelchairFinal ReportFinal Report
Sponsor: Sponsor:
Industry Advisor:Industry Advisor:
Facility Advisor:Facility Advisor:
Team:Team:
Keen MobilityKeen MobilityRick KleinRick Klein
Faryar EtesamiFaryar Etesami
Meagan PischelMeagan PischelRobb SparksRobb SparksJoshua HatchJoshua Hatch
Aleksey SynkovAleksey Synkov
Spring, 2005
PSU / Keen MobilityPSU / Keen Mobility
Mission StatementMission Statement
Develop a low-cost Develop a low-cost manual manual
wheelchair with wheelchair with adjustable width adjustable width
and depth for and depth for skilled care skilled care facilities.facilities.
PSU / Keen MobilityPSU / Keen Mobility
Need for Expandable Need for Expandable WheelchairWheelchair
Reduce size of chair Reduce size of chair fleet in nursing fleet in nursing homeshomes
Reduce wide (20”) Reduce wide (20”) chair rentals chair rentals
Free up Medicare Free up Medicare money for other money for other patient needspatient needs
Provide a better Provide a better fitting chair to fitting chair to patients patients
PSU / Keen MobilityPSU / Keen Mobility
Main Design ObjectivesMain Design Objectives
Adjust width 16” to 20”
Adjust depth 16” to 18”
Increase chair capacity to 300 lbs
Allow quick, tool free adjustment
PSU / Keen MobilityPSU / Keen Mobility
Additional RequirementsAdditional Requirements Allow use of normal Allow use of normal
doorwaysdoorways Ability to fold instantlyAbility to fold instantly Standard service lifeStandard service life Easy maintenanceEasy maintenance Manageable chair Manageable chair
weightweight SafetySafety ReliabilityReliability
PSU / Keen MobilityPSU / Keen Mobility
Final DesignFinal Design
Crossbar design allows wheelchair to foldCrossbar design allows wheelchair to fold
Standard Adult Wheelchair Folded
pinned
attached
PSU / Keen MobilityPSU / Keen Mobility
Final DesignFinal Design
DoubleCrossbarfor addedweightcapacity
WidthAdjust
PSU / Keen MobilityPSU / Keen Mobility
Final DesignFinal Design
Handle Re-designed for Depth Adjustment
Original Design
Re-design
Fixed
Sliding
PSU / Keen MobilityPSU / Keen Mobility
AnalysisAnalysisFinite Element Analysis (FEA) for Handle
F
PSU / Keen MobilityPSU / Keen Mobility
AnalysisAnalysis
Yield Strength = 57 kpsimax. stress = 30 kpsi
FOS = 1.9
Safe for designed load
FEA Result
max
PSU / Keen MobilityPSU / Keen Mobility
TestingTesting
Broken into quantitative and Broken into quantitative and qualitative characteristicsqualitative characteristics
Width and depth adjustability meet Width and depth adjustability meet project requirementsproject requirements
Width adjusts in less than 3 minutes, Width adjusts in less than 3 minutes, depth in less than 1 minutedepth in less than 1 minute
Chair still folds easilyChair still folds easily
PSU / Keen MobilityPSU / Keen Mobility
PatentingPatenting
Grant funds Grant funds available for available for patentingpatenting
Draft patent Draft patent application sent to application sent to lawyerlawyer
R1"
R1 1/2"
1 3/4"
4 5/16"
4 7/16"
7"
2 11/16"2"
7/8"
13 3/16"
1/4"
SolidWorks Student License
Academic Use Only
PSU / Keen MobilityPSU / Keen Mobility
Conclusions and Conclusions and RecommendationsRecommendations
The wheelchair meets all main The wheelchair meets all main design objectives and the majority of design objectives and the majority of other PDS requirementsother PDS requirements
Only aesthetics need serious helpOnly aesthetics need serious help Some areas for refinement were Some areas for refinement were
identifiedidentified
PSU / Keen MobilityPSU / Keen Mobility
Special ThanksSpecial Thanks
Rick, Jerry, Brandon and entire Keen Rick, Jerry, Brandon and entire Keen Mobility TeamMobility Team
Professor EtesamiProfessor Etesami Vancouver Skilled Care Facility Vancouver Skilled Care Facility
nurses and staffnurses and staff