| 摘要 |
<p>Apparatus has two half doors (12,12') each designed to rotate around vertical axis (14,14') fixed to supports (10,10'). Opening of doors (12,12') is done by motors (26,26') whose actuation is triggered by sensing of ticket or access card placed in access control mechanism. Each door (12,12') is associated with drive mechanism having drive arm (20.20'), fixed to door (12,12') and designed to rotate around vertical axis; drive system (28,30; 28'30'), driven by motor and whose linkage with drive arm is done via roller (32.32') which is forced to follow guide (38,38') fixed to support (10,10') when door passes from closed position to open position and vice versa. Guide has notch (40,40') in which is lodged roller (32,32') when door (10,10') is in closed position which prevents opening of door (10,10') by exterior action other than action by motor.</p> |
