| 摘要 |
A key-operated lock assembly for emergency actuation of the button (2) of a handle for doors of trucks, trailers or the like, in which the actuation key can be extracted in three positions which lie at 90 degrees to each other and comprises: an outer ring, which is fitted so that it can rotate coaxially with the plug of the key-operated lock in the casing of the handle proximate to the handle locking button, the ring having a perimetric profile which forms a lip (8) which is suitable to block the rotation of the button (2) and a recess which allows the rotation of the button in order to release the handle and an arc-like slot (10) extending substantially through 90 degrees; an electromagnet (12), in which the fixed part is rigidly coupled to the handle casing and the moving element is connected to the outer ring by means of a transmission stem (14); and a circular inner ring (17), which is rigidly coupled to the rotating plug of the lock and is provided with a pin (20) which is rigidly coupled thereto, protrudes from its surface and is suitable to enter the arc-like slot (10) of the outer ring (7); the rotation of the plug being suitable to produce the rotation of the outer ring if the electromagnet fails to operate, the electromagnet being able to move the outer ring to a configuration for locking or releasing the button when the key is extracted in an intermediate position. <IMAGE> |
