Progress Presentation 1

Progress Presentation 1Team HighlanderDesign ProblemCurrent walker users have trouble getting out of chairs of varying size.The importance of this problem is to come up with a design that allows the user to help themselves up and subsequently assist them in walking.The motivation of this project is to give people with motor disabilities the sense of independence in their mobility.Challenges & OpportunitiesMaintain high level of safety.Ergonomic, mobile and compact design.Eliminate the use of motors for functionality.Design of the frame to accommodate user weight, stability and lift functions.Opportunity to conquer these challenges and create a unique design that satisfies the user to the fullest extent, giving them a sense of self sufficiency.Design SpecificationsCapacity support up to 300 lbsWeight approximately 10 lbsCompact ability to be collapsed and storedPrice mid range/affordable; ~$200Material aluminum; light weight; available; easily machinedReliability 95% reliableSafety high priorityDimensions approximately 17x22x33 in. (DxWxH)Concept Selection & JustificationSecond Level Evaluation MatrixDesign ConceptsConcept 1 (Break-A-Leg)Pros Functional grip and has handbrakesCollapses to manageable heightEasy to use

ConsStructural stabilitySource of actuating force88Concept 2 (Metamorphosis)

Pros Button actuatedHigh adaptabilityVertical lift assistance

ConsLengthy operationToo many mechanical parts

99Concept 3 (Show Stopper)

Pros Provides lift supportCounterbalanceRetractable

ConsRequires space directly below userCounterbalance stability1010FRDPARRC ChartFunctional RequirementsDesign ParametersAnalysisReferencesRiskCounter-measuresLifting aidSliding handlesStatics; Def Bods; FEACOE 2001/3001 Textbook; Solidworks;Handles will slide back in during use; Handles will not be rigid enough to support weight;Motor controlled sliding;Retractable handlesStatics; Def Bods; FEACOE 2001/3001 Textbook; Solidworks;Not robust; Weak joints;Adjust frame to support more stress on jointsRetractable supportsStatics; Def Bods; FEACOE 2001/3001 Textbook; Solidworks;Cannot be used in an area without space beneath;Make position of supports adjustible/use internal counterweightsEnveloping designStatics; Def Bods; FEACOE 2001/3001 Textbook; Solidworks;Cannot be used with a couch; Possible injury when contracting the frame again;Make contraction of frame a slow processSpring supported handlesStatics; Def Bods; FEA; Machine DesignCOE 2001/3001 Textbook; Solidworks;Injury from misuseUse springs that won't cause bodily harm from too much strengthLift design (motor powered)Statics; Def Bods; Dynamics; FEACOE 2001/3001 Textbook; Solidworks;High complexity; High cost;Implement as modular a design as possibleCollapsing design (motor powered)Statics; Def Bods; Dynamics; FEACOE 2001/3001 Textbook; Solidworks;High complexity; High cost;Implement as modular a design as possibleSupport during useStandard frameStatics; Def Bods; FEACOE 2001/3001 Textbook; Solidworks;material wearing outUse a higher grade materialX-shaped frameStatics; Def Bods; FEACOE 2001/3001 Textbook; Solidworks;Not easily stowed;Use a higher grade materialSafetyElectronics to control design partitionsSystems & ControlsME 3015 TextbookShort circuit;Reliable electronicsSensorsSystems & ControlsME 3015 TextbookLimited line of sightPlace in area with good line of sightHand brakes for wheelsFriction analysisInjury from misuseEasy to use handbrakesMeets/exceeds industry standardsIndustry regulationsN/AFederal GovernmentInjury from substandard constructionStandards TrainingAccessoriesRemovable trayStatic/DynamicsStatics/Dynamics textbooktray wearing outHigh grade materialHooks to hang thingsStatic/DynamicsStatics/Dynamics textbookhooks crack over timeHigh grade materialWeight balanceshifting fluidFluid MechanicsFluid Mechanic textbookfluid descreasing over timeability to replace fluidshifting weight by springsMachine DesignMachine Design textbookSpring losening over timeability to replace springsmotorized weight distributionStatic/Deformable bodies/dynamicsCOE 2001/3001/ Dynamics TextbookcomplexityUse few motorsLifting techniqueHorizontal pullStatic/DynamicsStatics/Dynamics textbookCounter weight issuesHeavy frameVertical pullStatic/DynamicsStatics/Dynamics textbookCounter weight issuesHeavy frameVertical pushStatic/DynamicsStatics/Dynamics textbookCounter weight issuesHeavy framePortabilityHorizontal collapseStatic/DynamicsStatics/Dynamics textbookRobustnessUse a higher grade materialVertical leg adjustmentStatic/DynamicsStatics/Dynamics textbookRobustnessUse a higher grade materialWithin Budget$500 Manufacturing/testing cost/FEAMaterial pricingfew customerslower cost of material~$100 product priceManufacturing/testing cost/FEAMaterial pricingfew customerslower cost of materialEase of useSimple designFew partsCADbreak down of partsuse few partsUse of buttonsElectronicsCircuits Textbookover voltagecheck spec on voltage useLightweight ~7 lbsMaterial scienceMaterial science textbookheavy product hard to moveuse light weight materialEase of ManufacturingAluminumManufacturing and production analysis/FEAManufacturing booklow safety factoruse a higher grade materialCarbon CeraminsManufacturing and production analysis/FEAManufacturing booklow safety factoruse a higher grade materialFunctional Requirements Lifting AidFunctional RequirementsDesign ParametersAnalysisReferencesRiskCounter-measuresLifting aidSliding handlesStatics; Def Bods; FEACOE 2001/3001 Textbook; Solidworks;Handles will slide back in during use; Handles will not be rigid enough to support weight;Actuated sliding handles;Retractable handlesStatics; Def Bods; FEACOE 2001/3001 Textbook; Solidworks;Not robust; Weak joints;Adjust frame to support more stress on jointsRetractable supportsStatics; Def Bods; FEACOE 2001/3001 Textbook; Solidworks;Possible retraction during useReliable mechanism designed to prevent accidental support retraction.Enveloping designStatics; Def Bods; FEACOE 2001/3001 Textbook; Solidworks;Possible injury when contracting the frame again;Make contraction of frame a slow process; Design with smooth edges to avoid bodily harm;Spring supported handlesStatics; Def Bods; FEA; Machine DesignCOE 2001/3001 Textbook; Solidworks;Injury from misuseUse springs that won't cause bodily harm from too much strengthLift designStatics; Def Bods; Dynamics; FEACOE 2001/3001 Textbook; Solidworks;Unwanted actuation; Inury during lifting operation;Reliable mechanism designed to prevent unwanted actuation; Slow actuation process;Collapsing design (Break-A-Leg)Statics; Def Bods; Dynamics; FEACOE 2001/3001 Textbook; Solidworks;Collapse during use; Joint failure; Injury from hinge;Good statics analysis; Testing;Existing ProductsProduct 1-The Original Lift WalkerSimilaritiesLifts user from a sitting position to a standing positionCan be used as a walker

DifferencesVery expensivePrimary use is for hospitals and patients with disabilities as opposed to the average daily userStraps and harnesses are usedShape

DescriptionA walker primarily used for therapy designed to improve a users strength, balance and coordination. It utilizes a hydraulic lifting operation that adjusts for a users weight and can lift a user from a sitting position. Straps and harnesses may also be used for extra support during lifting operation.Product 2- Hugo 4.0 Elite Rolling Walker DescriptionIts a walker with large wheels on it for ease of movement. It comes with a storage pouch and a seat. Another storage compartment is located underneath the seat. Features hand brakes and can be collapsed for easy transport.

SimilaritiesWheelsHand brakes

DifferencesIt lacks ability to aid user in rising from chairDoes not adjust width for adaptability

Applicable Patents Patent 1-Motorized WalkerPat No. 5168947Date: 12/08/1992 A motorized walker includes a base upon which a person can stand, with wheels on the base for rollably supporting the base. Variable speed reversible electric motors are provided for driving the wheels. Difference: Does not assist in stand-up process.Similarity: Utilizes motors to help drive walker

Patent 2- Walker release button Patent No. 5255696Date: 10/26/1993 Manufacturer: Diamond Medical Equipment Corp. (Mount Vernon, NY)

A collapsible walker for elderly and disabled persons including first and second U-shape side frames which are pivotal relative to a front frame, enabling the walker to be collapsed substantially flat. A pushbutton on the sleeve permits disengaging the detent from the catch slot. Difference: Does not assist stand-up processSimilarity: Push Button

Patent ClaimsThe device assists user in walking and rising from a seated position by transferring the center of gravity to a location over the users feet.Mechanical advantage from the device provides lift assistance to the user no external energy is used in the lifting process.The device accomplishes the center of gravity transfer by altering its geometry to more effectively capitalize on the strength of its user.

Schedule

2020Market Research PlanContinued product researchTalk to companies that manufacture and design walkersNova, Medline, Hugo, Carex, Invacare and MabisTalk to assisted living employees and residentsBrighton Gardens of Buckhead, Atria Buckead, Delmar Gardens of Gwinnett, The Arbor CompanyConclusionSchedule has been established for task management. Three concepts have been selected to make up the final design proposed.Evaluation criteria have been used to assess the strengths and weaknesses of each design.Patent/Product research has been conducted.Market research needs to be completed.CAD and manufacturing analysis is scheduled.Final design and prototyping will commence.Thank you

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