Cell Ph Design

8/22/2019 Cell Ph Design

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An Ergonomic Mobile Phone Design by M Ghosh.

Diagram of an ergonomic mobile phone handset (for a right handed user), allpictures designed and painted by self using Microsoft PowerPoint 2007, WINDOWS 7Ultimate.

Front View,Lid Closed

Back View, LidClosed

Left side view, Firstlid open (detached tounderstand better),then closed.

Right side view,lid open(detached tounderstandbetter)Front View, Lid Open

Fig 1 Fig 2 Fig 3 Fig 4 Fig 5

Legends: A - receiver holes, B port for charger, C soft key, D - Blind bump (standard), E curvedbody for better grip, F key pad (situated above the display screen), I Display screen, J concavebody part for better fit of the thenar part , K curve to fit hypothenar, L speaker holes, M flip-

open lid, G, H pressure clasp for the lid, N slight depressions for finger grips on the back, O camera, P USB port for data transfer, Q Port for headphone, R side switch for most used function(in this case volume, ringtone, vibration etc)

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A few Ergonomic benefits of the newly designed mobile phone.

Fig 6 Fig 7 Fig 8 Fig 9 Fig 10 Fig 11

With old designs such as thesewith keypad below display, wehad to hold the phone like Fig 6-with only the lower part of the

phone lying on the palm makingfor a unstable grip as well asmaking it hard on the little andring fingers, or we had to hold it

like Fig 7, bending the thumb atan acute angle to type and thusmaking it hard on the thumband the wrist and the flexortendon and palmer fascia for theindex and thumb.

The planerectangularbody shape ofthe old designsare upgradedto a palmfitting shape,making for a

better grip inthis design, yetthumb painduring textingcant beavoided in this.

This newergonomicphone Idesigned forthe assignmentwill solve bothproblems as itgives bettergrip while

texting is nomore painful.Plus thesmaller sizemakes the gripeasier.

The olddesignscalled forgripping themobile insuch a waythat it wascradledbetween the

palm andneck forbetterhearing,resulting inneck pain.

The newdesign withreceiverholes on thetop of thephone andspeakerholes on the

lid allowsthe user tohold itstraighter,and relievesneck pain.

Logic behind the improved design enlisted below

SrNo

SpecialCharacterist

ics

Logic behind the Special Characteristics to implement theergonomic design

1

Design of amobile phonewith thekeypadpositionedabove thedisplayscreen. Fig.1, 2, 4, 5, 9

The new design repositions the keypad above the screen and ensures thatmost of the handset rests in the palm of the hand for improved supportand control. This design is more ergonomic for texting, The thumb rests ina comfortable position directly above the buttons of the keypad. Theimproved angle for the thumb makes it unnecessary to shift the mobilephone around in the hand while typing text. Not moving the thumb in anacute angle constantly while texting gives pain relief to the thenarmuscles as well as the palmer fascia and flexor tendons attached to theindex finger and thumb.

2 Curved shape The concave curvature of the lower part of the phone is to accommodate

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of the body ofthe phone

giving it a topheavydumbbellshaped look.Fig. 1 -3, 8, 9

the pillow of the thumb (thenar) better, as well as the hypothenar. Thisallows for improved grip as the phone rests comfortably in the hollow ofthe palm. While the convex upper part sits better on the spread fingers.

The phone's gentle curve ensures a smooth and ergonomic userexperience.

The popular peanut shape of TV remotes etc has been tweaked

for this ergonomically competent line of phone. The peanut shape is atime tested form factor that settles comfortably in both the left and righthand. More weight at the bottom provides good balance. This phone Ihave designed specifically for right handed persons such as myself bygiving the thenar side more curve than the hypothenar.

Two concave indentions on the underside of the phone willprovide resting places for the fingers. Sliding the pointer and middle fingerinto one of these two grooves registers the thumb in one of three

positions for engaging the three button groupings.

SrNo

SpecialCharacteristics

Logic behind the Special Characteristics to implement theergonomic design

3Finger grips on theback. Fig 3

For better grip, so that one can hold the phone casually withoutfear of it falling of. Keeping a death grip on the handset whiletalking or texting is often hard on the hand.

4

Side switch forvolume adjustment,on the thumb side.

Fig. 3

Pressing the upper part will increase volume from mute, to

vibrate to low volume high volume through gradations speaker on. Pressing the lower part will make it walk the opposite

way.

5Side ports for USB.Fig 4

To transfer songs, video, picture etc.

6Side ports forheadphone and headphone. Fig 4

For headphone attachment. As the radiation is harmful, usingheadphone is always a safe bet. Ideal Headphone ear plug shouldbe soft and comfortably fitting. A comfortable ear piece needs tohave a good shape, be made of supple material and fit correctly.

7

Flip open front lidwith mouth piece andvoice receiver holes

on the key pad aswell as the top of thephone

Fig 1, 2

This is so that the user doesnt have to bend his or her neckwhile making a phone call, to cradle the phone for betterreception of sound even without using a headset holding the

phone in straight position gives relief from neck pain. Thehearing is not obstructed due to the holes on the top of thephone for receiver.

The flip open lid may be fitted with pressure clasp so thatpressing the lid will flip it open, while it can be closed by the handholding it pressing against the chin of the user.

8Blind bump on middlekey Fig 1, 2, 4, 5

Standard for visually handicapped persons to navigate the keys

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9Camera on back andcharger insert pointon top. Fig 3

Standard feature, placement implements best utility and servesfunctional purpose. Placement is such that it is not obstructed byfingers while holding the phone.

10

Large flat screen

display Fig 1 Non reflective LED screen. Better suited to visual ergonomics.

11 Keypad. Fig 1, 2

Color coded and oriented as standard, only placed on the top ofthe display screen for better access with the thumb; thuseliminating unnecessary motions that arent just repetitive -theyre also wasteful and results in less fatigue at the end of theday.

Two different button zones (color coded) to provide ahierarchy of button groupings for efficient locating and activationwith the thumb. The First is the 12 alphanumeric keys on theupper portion, and the other is the rest of the keys mainly dealingwith control function, makes for better hand eye co-ordination.S

12 Soft key. Fig 1, 2, 4, 5Feels better on the thumb pad and fingers.

13Padded body cover ofthe mobile.

The metallic shine on many phones may look good but rendersthe phone slippery in sweating hand. The padded soft- roughtexture of certain materials can make the grip easy and firm.

14 compact headsetSmall size fitting the palm, makes it more comfortable to carryand less likely to lose.

15Voice quality andreception

This is not a headset character but an ergonomic phone shouldhave an ear piece that is loud and clear. The microphone willdigitally enhance the sound and cancel noise, to transmit thetalkers voice only.

Acknowledgement: Core 77 Design Magazine and Resource and PatentDesign.com

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Cell Ph Design