Mechanical Design Check for Notebook R10.docx

1、Mechanical Design Check for Notebook R10Mechanical Design Check For NotebookVersion 1.0PBU Technique Support DepartmentMechanical Design Support DivisionAn Application to Mechanical Design Check Standards for Notebook1. AbstractAs a value and advantage of technology products just like Notebook is go

2、ing down quickly because of the technology innovation cycle is short, so it is getting more important to shorten the access time to the market and keep quality of products in the quick development. However we have many quality problems of Notebook, it causes development delay and becomes worsening b

3、usiness condition seriously.Now we arranged the past quality problem and made Mechanical Design Check for Notebook. 2. MeritsThe merits of utilizing Mechanical Design Check for Notebookare followings:1) Becomes the guideline to which mechanical engineer should refer2) Make sure stable quality of pro

4、ducts3) Even who has less mechanical experience can estimate design quality check by using criteria as a numerical value3. Definition1)Mechanical Design Check for Notebookis MDSDs job guideline.2) If we have another specification for special products, we will add standard at each time.3) If we regar

5、d other important check items, we will add and update version.Mechanical Design Cheek for NotebookItemDescriptionPageIssuedRevisedResult1Operability for major parts42/1/052Slide-Knob Operability52/1/053Key Board Warping (Stiffness)62/1/054Reset-Switch Hole72/1/055Printing Positioning82/1/056Clearanc

6、e between Display unit and Housing92/1/057Clearance between LCD, LCD Cover and Key Top Surface102/1/058LCD hook recession112/1/059Strength Against Twisting Product(Strength for Display LCD Glass and Hinge fixed Section)122/1/0510Strength of Product Against External Bending Force132/1/0511Strength of

7、 Product Against External Pressure onto small/local area 142/1/0512Strength of I/O Door and other Door Strap Fixing Section152/1/0513Rubber Foot Fixing Strength162/1/0514Prevention of Falling Down172/1/0515Strength against impact (One side falling)182/1/0516Strength against falling down (falling tes

8、t for product itself)192/1/0517Rubber foot floating202/1/0518Strength of Kensington Lock21-222/1/0519Noise generated by product23-242/1/0520Gap inspection252/1/0521Step inspection262/1/0522Strength of Product Against External Pressure onto small area around T/P button272/1/0523Noise generated by com

9、press on associate area282/1/0524T/P Button Force292/1/0525HDD Insert/Eject302/1/0526Battery invaluable test312/1/0527282930313233Mechanical Design Cheek for NotebookOperability for major partsObjectiveTo clarify definition for suitable operability of major parts which are operated by users among ma

10、n-machine interface.CheckStandardsThe standards of operability for major parts should comply with the table below.If there is some unique requirement of specification which is not specified in the table, an appreciate standard should be defined in an individual specification. An appreciate standard

11、should be defined in individual specification.Knob should be easy to operate, light and smooth in its operating when cushion side of the forefinger or thumb operates Knob.Operation ForceNo.ItemsDescriptionSpecificationCommentsData Result1PC Card Insertion(0.54Kgf)Eject(11.3Kgf)2DoorOpen/Close(0.030.

12、2Kgf)3DC JackInsertion/Disinsertion(0.51.5Kgf)4Touch Pad ButtonOperation(0.150.25Kgf)5Power switchOperation(0.10.35Kgf)6Display Lock KnobOperation(0.10.4Kgf)7CD-ROM bezel buttonOperation(0.10.5Kgf)?8CD-ROM TrayClose(0.30.6Kgf)910111213Project NameIssued DateIssued byTest DataResultMechanical Design

13、Cheek for NotebookSlide-Knob OperabilityObjectiveTo clarify definition for suitable operability of Slide-Knob which are operated by users among man-machine interface. This standards apply to the following Slide-Knob: Slide-Knob for power switch, Slide-Knob for LCD lid latch, Slide-Knob for battery-p

14、ack latch, Slide-Knob for FDD/CD-ROM/DVD/HDD Module lock, Slide-Knob for I/O doorCheckStandardsSlide-Knob should be easy to operate, light and smooth in its operating when cushion side of the forefinger or thumb operates Slide-Knob.Operating force should accord with the following recommended values:

15、No.ItemsDescriptionSpecificationData Result1Slide-Knob for power switchOperation0.98-3.92N (100-400gf)2Slide-Knob for LCD lid lockOperation0.98-3.92N (100-400gf)3Slide-Knob for Battery-Pack LockOperation0.98-3.92N (100-400gf)4Slide-Knob for FDD/ CD-ROM/DVD/HDD Module lockOperation0.98-3.92N (100-400

16、gf)5Slide-Knob for I/O doorOperation0.98-3.92N (100-400gf)Note:The value of Slide-Knob for Battery-Pack and Slide-Knob for FDD/CD-ROM/DVD/HDD Module are specified in the conditions battery pack and module is removed.Evaluation Procedures1) Check whether Slide-Knob is operated easily by the cushion s

17、ide of the forefinger of thumb.2) Evaluation (Check) method:Put tension gauge at the Slide-Knob, and give a motive force in horizontal direction (parallel to the movable direction of the Slide-Knob)For feeling of attach and detach in the condition each of FDD/CD-ROM/DVD/HDD Module and battery pack i

18、s installed, an appropriate design should be taken individually for each model and also check (evaluation) should be taken.Project NameIssued DateIssued byTest DataResultMechanical Design Cheek for NotebookKey Board Warping (Stiffness)ObjectiveTo prevent losing of product quality and its operability

19、 caused by abnormal ups and downs of keyboard during key operation.To clarify the criteria to maintain stable key entering operation by eliminating a warp during key input operation.CheckStandards- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

20、The displacement value of warping at the depressed key area: Max.0.5mm The displacement value of ups and downs at non depressed key area : Max.0.5mm- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -Evaluation ProceduresApply external force of 4.9

21、N (500gf) any part on the key boardProject NameIssued DateIssued byTest DataResultMechanical Design Cheek for NotebookReset-Switch HoleObjectiveTo clarify design standard for the dimension of Notebooks housing to maintain stable operation of Reset-Switch.CheckStandardsThe housing should be designed

22、as the Reset-Switch can be access and depressed by the tool with the tip specified in the below.Project NameIssued DateIssued byTest DataResultMechanical Design Cheek for NotebookPrinting PositioningObjectiveTo clarify the printing positioning disorder.CheckStandardsThe positioning disorder should t

23、o be within the following standards.- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Compared with the master Both vertical and horizontal deviation: plus/minus 0.3mm Compared with the master Slide-Knob for Both vertical and horizontal inclinati

24、on:0.5o or less - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -Ex.)If the above standards are beyond ordinary fabrication, the allowed limitation standard should be established and the limitation sample has to submit to Sharp Corporation.Evaluati

25、on ProceduresThe deviation and inclination should be measured against the supplied master.Project NameIssued DateIssued byTest DataResultMechanical Design Cheek for NotebookClearance between Display unit and HousingObjectiveThe allowable positioning disorder between display unit and housing with the

26、 display unit closed is closed is clear defined to obtain uniform clearance and neat appearance. CheckStandardsThe clearance between display unit and housing unitWhen the display unit is closed have to be within the following limitations- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

27、 - - - - - - - - - - - - - - - - - - - -Inclinations detailed below have to be within : 0.1 or less- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -Ex.)Display unit lid shall be locked in case of pushing ether the right of left edge of display unit

28、 lid.Evaluation ProceduresInclinations shown above will be measured.Project NameIssued DateIssued byTest DataResultMechanical Design Cheek for NotebookClearance between LCD, LCD Cover and Key Top SurfaceObjectiveThe standards will clarify the expected clearance among three units to prevent the surfa

29、ce scratch. CheckStandardsMinimal clearance among LCD, LCD cover and Key top surface should be maintained to prevent surface scratches caused by tight contact.- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -Clearance between Key top and LCD surfac