| 摘要 |
<p>A security device protected by casings (28 and 29), actuated by keylock (16) which turns a gear (17) via a shaft (20) along annular grooves (19) moving the complete slidable assembly (12, 18, 21, 25 and 23) simultaneously interconnecting two special gears (13, 14) inside the sleeve (12) and releasing locking sockets (26) of the ring (25) from the pin (27) by the links (21) and pins (23) along slots (24) in the casing (28) preventing rotation, however, leaving rotatable movement by the sleeve (12) with interconnected shafts (10 and 11) via a bearing (18). Turning the key in direction C activates security disc (37), this releases spring-loaded shaft (39) by the lobe (40) simultaneously the gear (17), lobe (34) enters the failsafe position on the sleeve (12A) i.e. ON position normal use. When the keylock (16) is turned in direction D the disc (37) moves lobe (40) against shaft (39). When safety shaft (39) is depressed making the way clear for lobe (40) to return and gear (17) teeth (35) to re-enter the annular grooves (19) thus activating the complete internal assembly in reverse, i.e. OFF position immobilised.</p> |
