| 摘要 |
<p>The invention provides a pushbutton unit (30) of the flush-mounted or wall-resting type, in particular for external stations of intercom and video-intercom systems, comprising a convex front plate (10) on the inside of which there is a housing (25, Fig.3, not shown) for containing the electrical and electronic component modules. To strengthen the structure (28) of the pushbutton unit (30) against vandalism there are provided two metal ties (22, 22A, Fig.3) positioned within the housing (25) and which when in use constitute, together with two frontal fillets (11, 11A), a rigid impact-resistant assembly and also preserve the appearance of the pushbutton unit (30) itself; ribs (26, 26A, Fig.3) provided on the sides (17, 17A) of the structure (28) further strengthen the faceplate (27) and the front plate (10). Electronic modules are carried on the faceplate (27), which is attached to the front plate (10) via screws (24, Fig.3).</p> |
