FIELD: instrument making.
SUBSTANCE: invention relates to the field of instrument making, in particular, to radio-electronic equipment; it can be used to enter information in computers, telephones and similar devices. A keyboard contains front panel (1) with keys in the form of domes (2), printed circuit board (3) with electrical wiring, contact pads (4) and insulating adhesive layer (5) with holes in contact zones. Additional restrictive insulating layer (6) is located between panel (1) and board (3). Layer (6) has holes in contact zones with a groove along the perimeter for placing transfer element (7) plates with pushers (8) made of elastic material attached to plates from below. Short circuit breakers in the form of contact plates (9) are installed under pushers (8).
EFFECT: increase in the reliability of the keyboard operation by eliminating the negative impact of shock loads on keys.
3 cl, 1 dwg
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Authors
Dates
2022-03-16—Published
2020-07-21—Filed