SHIELDED KEYBOARD Russian patent published in 2016 - IPC G06F3/02 H01H13/70 H05K9/00 G06F21/83 

FIELD: instrument making.

SUBSTANCE: invention relates to a shielded keyboard. Keyboard comprises a housing made from dielectric material consisting of a base and a cover, accommodating planar contact membrane, keys installed in holes of cover of housing, elastic padding, thin conducting metal mesh with a U-shape, between inner surfaces of which there is a membrane, wherein membrane, metal mesh and elastic padding are arranged on adjusting-impedance posts, on shielding housing unit of controller through dielectric material there is a closed loop in form of ribbon conductor made from permalloy, housing without galvanic contact is installed between inner surfaces of metal mesh, shielded cable of interface of keyboard has two shielding braidings and is galvanically connected to housing and mesh, metal housing of interface cable connector has two additional shields, and on outer side of base of housing there is an impedance convergent mirror, in form of a steel plate with corrosion-resistant current-conducting coating.

EFFECT: technical result is higher level of shielding keyboard.

13 cl, 10 dwg