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This documentis underconsideration withinanASTM Internationaltechnical committee.The revisionsproposed havenot receivedall approvalsrequired tobecomean ASTMstandard.You agreenot toreproduce orcirculate orquote,in wholeor inpart,this documentoutside ofASTMCommittee/Society activities,or submitit toany otherorganization orstandards bodieswhether national,international,or otherexcept with the approvalof theChairman of theCommittee havingjurisdiction and the writtenauthorization of the Presidentof theSociety.If youdo notagree with these conditionsplease immediatelydestroyall copiesof thedocument.CopyrightASTM International,100Barr HarborDrive,West Conshohocken,PA
19428.All RightsReserved.Proposed Changeto StandardConsumer SafetyPerformance Specificationfor CarriagesandStrollers Latching Mechanisms
5.5Latching Mechanisms:
1.
1.1Any unitthat foldsshall havea latchingdevice orother provisionin thedesign thatwill preventtheunit fromunintentional foldingwhen properlyplaced in the manufacturer^recommended useposition.Products withlatching devicesfor preventionof unintentionalfolding shall be testedin accordance with
7.
2.During andupon completionof thistest,the unit shall meel
5.
5.
1.1or
5.
5.
1.
2.the
5.
5.L1The lockingdevice onthe unitshall remainlatched.
5.
5.1,2The strolleiframe componentsyield andpermanently defoirnand asa resultthe fullload specifiedcanno longerbe appliedor mainlainedin thedirection associated with the folding of the strollerandthefoldlatch emainsengaged.】
5.
5.2_4-Strollers that
6.6Combination Unitof aCar Seaton aStroller-The combinedunitshallconform to the requirementsof
2.2,
5.5in accordance with
7.2for thosestrollers where the testwas discontinuedper
5.
5.
1.2,
6.1in accordancewith
7.6,
6.
2.4in accordancewith
7.
3.2,
6.3in accordancewith
7.
4.1,
7.10,and
9.1in allmanufacturersrecommended usepositions.When testingthe combinationunit accordingto
7.1016CFR
1500.52b4iii,the unitshall neitherhave anybroken partsnor allowthe carseat tocompletely separatefrom thestroller.
7.Test Methods
7.1Testing guidelines
7.
1.
1.1The impacttest,
7.
11.2-
7.
11.6,shall bethe secondto the last performance test,withthe test in
7.
11.7the lastperformancetest.
7.
1.2The testingconducted underSection7for thethree testslisled inrequirement shallbe conductedin thesequenceshown andshallbethelastthiee testsconducted underthis section・
7.
11.2-
7.
11.6,then
7.
11.7,andas thelast test
7.
27.
1.3Test Samplereplacement-If duringthe courseof conductingthe testmethods inthis safetyspecification,a test model suffersany permanentdeformation ordamage,an additionaltestmodelof thesamemodel shallbe usedfor theremainder ofthetestmethods.
7.2LatchingMechanismsfor Preventionof UnintentionalFolding
9.
7.
2.1feee^Place the product inthe manufacturersrecommended useposition,theproduct in accordancewiththe manufacturersinstructions,and^Qradually place a5-lb
2.3-kg weightsimilar toa5lb bagofsugar inthe centeroftheeach seatingsupporting surface.
7.
2.2Plaee-the-pFedHet-in-the-maRHfiaetHFeFs-FeeemFHeRded-HKe-pesitieR-SHCure theproduct kothatthe normalfolding motionis notimpeded.
7.
2.3Apply a force of4§-lbH2O0-N-67Ibf289N atthe locationnormally associatedwiththefoldingaction andinthedirection normallyassociatedwithfolding theproductinaccordancewiththemanufacturer^instructions.Gradually applythe forcewithin5s andmaintain for an additional10s.Discontinue theapplication ofthe forceif thecondition outlinedin section
5.
5.2occurs.NOTE:3Do notapply thisforce onthe latchingor unlatchingmechanism itself.To applythe forcetothe一handle ofa productwith separategripping handles,placearigid barhorizontally acrossthe handlesandapply the force centeiedbetween thehandles.
7.
2.4Repeat
7.
2.3foratotal of5times within2-4min.
7.
2.5Fold theunit inaccordancewiththe manufacturersinstructions andrepeat
7.
2.1,
7.
2.2,and
7.
2.3oneadditional time.Xl.x Rationalefor
5.
5.2---Deformation ofthe strolleframe ataforceless thantheforcespecified inSection】
7.2limits theforces thatcan be applied tothefoldlatchs andthe functionalityofthestroHer.As thestrollerdeflection isan obviouscondition andis notepresen[ative ofthe loadsthat wouldbeappliedin use,】discontinuing thetest andpassing thestroller forthis lequirementis appiopriatepiovided thefold latches】emain engaged.Rationale:
7.
2.3,the latchingand lockingmechanism forcerequirement wasincreased from45lbs to67lbs.These testswere amplifiedto addressincidents involvingstrollers withdurability issueswherethelatchingmechanism failedover repeateduses.The combinationoftheincrease forceand numberof trialsis intendedtotest thereliability ofproducts overrepeated destructivecycles.。
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