Keyboard for mobile telephones, has an assembly plate arranged between a bank of keys and a circuit board and connected to a silicone switching mat and a polydome switching mat

摘要

Keyboard comprises keys arranged as a bank of keys (1) to which switching devices arranged on a circuit board (2) are assigned to trigger a switching impulse when a key is operated. An assembly plate (5) arranged between the bank of keys and the circuit board is connected to a silicone switching mat (4) and a polydome switching mat (8) and has key guides and bearings for short lifting keys (6, 7) connected to the polydome switching mat.