Mechanical Design Check for Notebook R10.docx
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MechanicalDesignCheckforNotebookR10
MechanicalDesignCheckForNotebook
Version1.0
PBU
TechniqueSupportDepartment
MechanicalDesignSupportDivision
AnApplicationtoMechanicalDesignCheckStandardsforNotebook
1.Abstract
AsavalueandadvantageoftechnologyproductsjustlikeNotebookisgoingdownquicklybecauseofthetechnologyinnovationcycleisshort,soitisgettingmoreimportanttoshortentheaccesstimetothemarketandkeepqualityofproductsinthequickdevelopment.HoweverwehavemanyqualityproblemsofNotebook,itcausesdevelopmentdelayandbecomesworseningbusinessconditionseriously.
Nowwearrangedthepastqualityproblemandmade『MechanicalDesignCheckforNotebook』.
2.Merits
Themeritsofutilizing『MechanicalDesignCheckforNotebook』arefollowings:
1）Becomestheguidelinetowhichmechanicalengineershouldrefer
2）Makesurestablequalityofproducts
3）Evenwhohaslessmechanicalexperiencecanestimatedesignqualitycheckbyusingcriteriaasanumericalvalue
3.Definition
1）『MechanicalDesignCheckforNotebook』isMDSD’sjobguideline.
2）Ifwehaveanotherspecificationforspecialproducts,wewilladdstandardateachtime.
3）Ifweregardotherimportantcheckitems,wewilladdandupdateversion.
MechanicalDesignCheekforNotebook
Item
Description
Page
Issued
Revised
Result
1
Operabilityformajorparts
4
2/1/05
2
Slide-KnobOperability
5
2/1/05
3
KeyBoardWarping（Stiffness）
6
2/1/05
4
Reset-SwitchHole
7
2/1/05
5
PrintingPositioning
8
2/1/05
6
ClearancebetweenDisplayunitandHousing
9
2/1/05
7
ClearancebetweenLCD,LCDCoverandKeyTopSurface
10
2/1/05
8
LCDhookrecession
11
2/1/05
9
StrengthAgainstTwistingProduct
（StrengthforDisplayLCDGlassandHingefixedSection）
12
2/1/05
10
StrengthofProductAgainstExternalBendingForce
13
2/1/05
11
StrengthofProductAgainstExternalPressureontosmall/localarea
14
2/1/05
12
StrengthofI/ODoorandotherDoorStrapFixingSection
15
2/1/05
13
RubberFootFixingStrength
16
2/1/05
14
PreventionofFallingDown
17
2/1/05
15
Strengthagainstimpact（Onesidefalling）
18
2/1/05
16
Strengthagainstfallingdown（fallingtestforproductitself）
19
2/1/05
17
Rubberfootfloating
20
2/1/05
18
StrengthofKensingtonLock
21-22
2/1/05
19
Noisegeneratedbyproduct
23-24
2/1/05
20
Gapinspection
25
2/1/05
21
Stepinspection
26
2/1/05
22
StrengthofProductAgainstExternalPressureontosmallareaaroundT/Pbutton
27
2/1/05
23
Noisegeneratedbycompressonassociatearea
28
2/1/05
24
T/PButtonForce
29
2/1/05
25
HDDInsert/Eject
30
2/1/05
26
Batteryinvaluabletest
31
2/1/05
27
28
29
30
31
32
33
MechanicalDesignCheekforNotebook
Operabilityformajorparts
Objective
Toclarifydefinitionforsuitableoperabilityofmajorpartswhichareoperatedbyusersamongman-machineinterface.
Check
Standards
Thestandardsofoperabilityformajorpartsshouldcomplywiththetablebelow.
Ifthereissomeuniquerequirementofspecificationwhichisnotspecifiedinthetable,anappreciatestandardshouldbedefinedinanindividualspecification.
Anappreciatestandardshouldbedefinedinindividualspecification.
>Knobshouldbeeasytooperate,lightandsmoothinitsoperatingwhencushionsideoftheforefingerorthumboperatesKnob.
OperationForce
No.
Items
Description
Specification
Comments
DataResult
1
PCCard
Insertion
（0.5~4Kgf）
Eject
（1~1.3Kgf）
2
Door
Open/Close
（0.03~0.2Kgf）
3
DCJack
Insertion/
Disinsertion
（0.5~1.5Kgf）
4
TouchPadButton
Operation
（0.15~0.25Kgf）
5
Powerswitch
Operation
（0.1~0.35Kgf）
6
DisplayLockKnob
Operation
（0.1~0.4Kgf）
7
CD-ROMbezelbutton
Operation
（0.1~0.5Kgf）
?
8
CD-ROMTray
Close
（0.3~0.6Kgf）
9
10
11
12
13
ProjectName
IssuedDate
Issuedby
TestData
Result
MechanicalDesignCheekforNotebook
Slide-KnobOperability
Objective
ToclarifydefinitionforsuitableoperabilityofSlide-Knobwhichareoperatedbyusersamongman-machineinterface.
ThisstandardsapplytothefollowingSlide-Knob:
Slide-Knobforpowerswitch,Slide-KnobforLCDlidlatch,
Slide-Knobforbattery-packlatch,Slide-KnobforFDD/CD-ROM/DVD/HDDModulelock,
Slide-KnobforI/Odoor
Check
Standards
Slide-Knobshouldbeeasytooperate,lightandsmoothinitsoperatingwhencushionsideoftheforefingerorthumboperatesSlide-Knob.
Operatingforceshouldaccordwiththefollowingrecommendedvalues:
No.
Items
Description
Specification
DataResult
1
Slide-Knobforpowerswitch
Operation
0.98-3.92N（100-400gf）
2
Slide-KnobforLCDlidlock
Operation
0.98-3.92N（100-400gf）
3
Slide-KnobforBattery-PackLock
Operation
0.98-3.92N（100-400gf）
4
Slide-KnobforFDD/CD-ROM/DVD/HDDModulelock
Operation
0.98-3.92N（100-400gf）
5
Slide-KnobforI/Odoor
Operation
0.98-3.92N（100-400gf）
Note:
ThevalueofSlide-KnobforBattery-PackandSlide-KnobforFDD/CD-ROM/DVD/HDDModulearespecifiedintheconditionsbatterypackandmoduleisremoved.
EvaluationProcedures
1）CheckwhetherSlide-Knobisoperatedeasilybythecushionsideoftheforefingerofthumb.
2）Evaluation（Check）method:
PuttensiongaugeattheSlide-Knob,andgiveamotiveforceinhorizontaldirection（paralleltothemovabledirectionoftheSlide-Knob）
>ForfeelingofattachanddetachintheconditioneachofFDD/CD-ROM/DVD/HDDModuleandbatterypackisinstalled,anappropriatedesignshouldbetakenindividuallyforeachmodelandalsocheck（evaluation）shouldbetaken.
ProjectName
IssuedDate
Issuedby
TestData
Result
MechanicalDesignCheekforNotebook
KeyBoardWarping（Stiffness）
Objective
Topreventlosingofproductqualityandit’soperabilitycausedbyabnormalupsanddownsofkeyboardduringkeyoperation.
Toclarifythecriteriatomaintainstablekeyenteringoperationbyeliminatingawarpduringkeyinputoperation.
Check
Standards
----------------------------------------------------
ØThedisplacementvalueofwarpingatthedepressedkeyarea:
Max.0.5mm
ØThedisplacementvalueofupsanddownsatnondepressedkeyarea:
Max.0.5mm
----------------------------------------------------
EvaluationProcedures
Applyexternalforceof4.9N（500gf）anypartonthekeyboard
ProjectName
IssuedDate
Issuedby
TestData
Result
MechanicalDesignCheekforNotebook
Reset-SwitchHole
Objective
ToclarifydesignstandardforthedimensionofNotebook’shousingtomaintainstableoperationof
Reset-Switch.
Check
Standards
ThehousingshouldbedesignedastheReset-Switchcanbeaccessanddepressedbythetoolwiththetipspecifiedinthebelow.
ProjectName
IssuedDate
Issuedby
TestData
Result
MechanicalDesignCheekforNotebook
PrintingPositioning
Objective
Toclarifytheprintingpositioningdisorder.
Check
Standards
Thepositioningdisordershouldtobewithinthefollowingstandards.
----------------------------------------------------
ØComparedwiththemaster
Bothverticalandhorizontaldeviation:
plus/minus0.3mm
ØComparedwiththemaster
ØSlide-Knobfor
Bothverticalandhorizontalinclination:
0.5oorless
---------------------------------------------------
Ex.）
Iftheabovestandardsarebeyondordinaryfabrication,theallowedlimitationstandardshouldbeestablishedandthelimitationsamplehastosubmittoSharpCorporation.
EvaluationProcedures
Thedeviationandinclinationshouldbemeasuredagainstthesuppliedmaster.
ProjectName
IssuedDate
Issuedby
TestData
Result
MechanicalDesignCheekforNotebook
ClearancebetweenDisplayunitandHousing
Objective
Theallowablepositioningdisorderbetweendisplayunitandhousingwiththedisplayunitclosedis
closediscleardefinedtoobtainuniformclearanceandneatappearance.
Check
Standards
Theclearancebetweendisplayunitandhousingunit
Whenthedisplayunitisclosedhavetobewithinthefollowinglimitations
----------------------------------------------------
Inclinationsdetailedbelowhavetobewithin:
0.1°orless
---------------------------------------------------
Ex.）
Displayunitlidshallbelockedincaseofpushingethertherightofleftedgeofdisplayunitlid.
EvaluationProcedures
Inclinationsshownabovewillbemeasured.
ProjectName
IssuedDate
Issuedby
TestData
Result
MechanicalDesignCheekforNotebook
ClearancebetweenLCD,LCDCoverandKeyTopSurface
Objective
Thestandardswillclarifytheexpectedclearanceamongthreeunitstopreventthesurfacescratch.
Check
Standards
MinimalclearanceamongLCD,LCDcoverandKeytopsurfaceshouldbemaintainedtopreventsurfacescratchescausedbytightcontact.
----------------------------------------------------
>ClearancebetweenKeytopandLCDsurfac
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