Arrangement for keyboards of communication terminals
摘要
The arrangement for keyboards of communication terminals proposes to insert a spacing plate into the switching mat, to extend the contact plungers of the individual domes and to place this unit of switching mat and spacing plate directly onto a circuit board having the appropriate contact points. In its edge areas, the switching mat is designed in such a manner that it encloses the circuit board in a dust-tight manner.
申请公布号
DE4307613(A1)
申请公布日期
1994.09.08
申请号
DE19934307613
申请日期
1993.03.06
申请人
DETEWE-DEUTSCHE TELEPHONWERKE AG & CO, 10997 BERLIN, DE
发明人
BRETTSCHNEIDER, DIETER, 1000 BERLIN, DE;STARATZKE, JUERGEN, 1000 BERLIN, DE