国外标准分享ASTM F1500000412007

This documentis underconsideration withinanASTM Internationaltechnical committee.The revisionsproposed havenot receivedall approvalsrequired to become anASTMstandard.Youagree nottoreproduce orcirculate orquote,in wholeor inpart,this documentoutside ofASTMCommittee/Society activities,or submitit toanyotherorganization orstandards bodieswhether national,international,or otherexcept with the approvalof theChairman of the Committeehaving jurisdiction and thewrittenauthorization of the Presidentof theSociety.If youdo notagree with these conditionsplease immediatelydestroy allcopies of the document.CopyrightASTMInternational,100Barr HarborDrive,West Conshohocken,PA

19428.All RightsReserved.Item7To:F15membersFrom:Bob CrowleyProposedChange toStandard ConsumerSafety PerformanceSpecification forCarriages and StrollersBrake

6.1Parking Brake Requirements:parking brrkeingdevice shallbe providedon the unit.The-Each parkingbrakeing deviceshallremain engagedduring the test specifiedin76Each parkingbrake shalland-prevent thebraked wheelsthfrom rotatingmore than90°during the5test cyclespecified testdescribed ie

7.

6.

6.

1.2After completingthe testdescribed in

7.6,each parkingbrake shallbe abletobeengaged andfunctionalin allpaiking brakeengagement positions.

6.

1.3Each parkingThe-brake shallbe constructedso thatit cannotbe disengagedby the child within theunit whenthechildis securedin the unit in accordance with the instructionalliterature.

7.6Test Methodfor ParkingBrakeRequirements

7.

6.1With thebrake applied,place the unit ona12°inclined planewith asurface coveredwith120gritsandpaper OFequivalent.Position theunit sothat thebraking wheelsis atthe highestelevation.762Gradually placea40-lb

18.1-kg weightif designedfor onechild,two40-lb weightsif designedfbrtwo children,or aweights equalto themanufhctu®s recommended maximum weight,whichever is~g干；eatef inthe center of the weight bearingsurfaces of the seator bodyof theunit.Maintain for10s.

7.

6.2Deriving TestForce F7・6,

1.1Establish Wi-the weightof theproduct includingall manufactureprovided accessoriesassembled】inaccordancewith themanufactwrers instructions.

7.

6.

3.2Establish W2—theweightplaced intheunitper

7.

6.27・

6.

1.3F=0・34Wi+W2lounded upto thenext wholenumbei

7.

6.4With[he parkingb akesapplied,place[heunitonarigid,horizontal testsurface coveiedwith60grit】sandpaper orequivalent.Gradually loadtheunitwith a40-lb

18.1・kg weights or aweights equalto themanufacturersrecommendedmaximumweight,whichever isgreater,inthe center ofeach weight-bearingseating surfaces or bodyof theunit.Maintain theload through-out the tests763,

7.

6.4,and

765.

7.

6.5Reaiwaid Test-Pull icaiwaidhorizontally with the testforce Fapplied atthe centeiof theunit and asnear tothe heightofthecenterofthe wheelsas possible,as shownin Fig.S.Gradually applythe force Fwithin5s andmaintain for an additional10soruntil wheelsslide5in.127mm onthe testsurface.

7.

6.6Forward Test-Pull forwardhorizontally withthe testforceFapplied althecenteroftheunit betweenthe wheels ofthe strolleandasnea tothe heightofthecente ofthe wheelsas possiblethat doesnot interfeie】】】withthe[otation ofthewheels,as shownin FigR.Giadually applythe forceF within5sandmainlain foranadditional10soruntil wheelsslide5in.127mm onthetestsurface.

1.

6.5Repeat

7.

6.3and764foratotal of5cycles altematingthe diiectionoftheapplied forceafter eachpull.At theend ofthe5th rearwaidpull andwiththeforce stillapplied,maik the point:on eachbraked wheelthatis in contact withthetestsurface as a refeienceAi.At theend ofthe5th forwardpull,withtheforce stillapplied,ma kthepointon eachbraked wheelthat isincontactwiththetest suifaceasareference A2,】Determine theangle betweenAi andA2for eachbraked wheel.Fig SPull rearwardFigR Pullforward。