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  BASIC CONSTRUCTION OF SILICONE RUBBER KEYPAD
Plastic Cap
Key Top (Laser etching. Potting.Coating)
Optional Colour Insertion Key
Conductive Part (Contact)
Wall
Base Pad
Air Path
Stroke
  FORCE & STROKE CURVE OF RUBBER KEYPAD
FORCE FP Peak Force(FMAX）
FC Contact Force
FR Min.Return Force(FMIN)
FM Max.Return Force
FD Drop Force(FD=FP-FC)
FG Gap Force (FG=FP-FM))
STROKE S1 Peak Stroke

S2

 Contact Stroke
LOCATION O Original Point
P Peak Point
C Contact Point
R Return Point
M Max.Return Point
TRAVEL O-P Preload Travel
P-C Travel To Contact
C-S Post Travel
S-R-M-O Return Travel
  CONDITIONS FOR DESIGN OF RUBBER KEYPAD
Force Range 0-350grams Typical Uses 30-80grams
Stroke Range 0.5-3.0mm Stroke Range 2.4-4.0mm
Life Cycle
（x103）		 500-2,000 Life Cycle
（x103）		 5,000-20,000
Typical Uses Telephone,Remote control,
Automotive Radio,Toys,
Calculator,...etc		 Typical Uses Computer,Typewriter,
...etc.
Force Range 30-250grams Force Range 30-200grams
Stroke Range 0.7-1.5mm Stroke Range 1.0-2.5mm
Life Cycle
（x103）		 500-2,000 Life Cycle
（x103）		  500-3,000
Typical Uses Telephone,Remote control,
Toys,Games,Calculator,...etc.		 Typical Uses Telephone,Typewriter,
Test Instruments,...
Force Range 0-350grams Force Range 20-80grams
Stroke Range 0.5-3.0mm Stroke Range 0.2-1.0mm
Life Cycle
（x103）		 500-2,000 Life Cycle
（x103）		 500-10,000
Typical Uses

Telephone,Remote control,Toys,Measuring Instruments, office Machine.

 Typical Uses

Remote Control,
Calculator Typewriter,
Computer,...etc.
 
Room 1210, 12/F; Fullgar Industrial Building, 234 Aberdeen Main Road, Aberdeen, HK
Tel：(852) 25538953    Fax：(852) 25800642
Email：sales@hombright.com