Keypads Applications
1st. GENERATION
Silicone keypads of the 1st generation are produced without conductive pills. The keyboard application in this case is done with a membrane keyboard for the electrical switch function and a silicone keypads for the mechanical spring function
 
2st. GENERATION
Silicone rubber keypads of the 2nd generation replace mechanical switches, and work like a typical electric push button switch. In this construction a plastic molded plunger moves the silicone rubber keyswitch down.
 
3rd. GENERATION Silicone keypad of the 3rd. generation have different colors.
TYPICAL KEYPAD CONSTRUCTION
FORCE |
FP |
PEAK FORCE (F MAX) |
|
FC |
CONTACT FORCE |
|
FR |
MIN. RETURN. FORCE (FMAX) |
|
FM |
MAX. RETURN. FORCE |
|
FD |
DROP FORCE (FD= FP - FC) |
|
F1 |
GAP FORCE (FG = FP - FM) |
STROKE |
S2 |
PEAK STROKE |
|
S |
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 |
1. CONDUCTIVE PILL TYPE
Special Design For Construction Ideas
(1) Different hardness in the basic keypad and keys |
(2) PCB holow for less connection pressure |
|
|
|
|
(3) Construction idea distance holder LED |
(4) Square key top design with LED windows. |
|
|
|
|
(5) LED on Same P.C.B. |
(6) Control the full travel |
|
|
| 
