| 主权项 |
1. Valve actuator, for a flap of a fire stop valve which is placed in an arming position and which is actuated by an actuation command associated with an event, having a casing (3) and a drive shaft (4) which is carried by the casing (3) and which is fixedly joined to the flap (2-1) and connected to a mechanical actuation energy storage spring (70) which is biased into the arming position and which returns the flap (2-1) into an active position and actuation members (60-80) which are controlled by events (external temperature, internal temperature, electrical actuation and/or manual actuation), comprising:
a carriage which is guided in translation, which is fixedly joined to the drive shaft comprises a rack (11) which engages with a toothed pinion (20) of the output shaft (4) which is connected to the flap (2-1) of the valve (2), which is provided with an arming stop, an arming device which is connected to the carriage by means of a connection which can be released by means of an actuation device as soon as the carriage is in the arming position, and a lever which is carried by the casing and which co-operates with the stop of the carriage in order to retain it in the arming position,characterised in thatthe carriage (10) which is guided in translation (in direction D) in the casing (3) between the arming position (direction A) and the actuated position (direction B) comprises:
an abutment (13) for the mechanical actuation energy storage spring (70), an abutment member (12) for the arming member (30) which drives the carriage (10) from its actuated position to its arming position in order to then become separated from the abutment member (12) at the end of the arming travel, a locking recess (14-1) for receiving a locking member (42) which is carried by a locking arm (40), which is pivotably mounted in the casing (3) and which is urged by a spring (44) towards a locking position thereof, an unlocking lever (50) which is mounted in the casing and which co-operates, on the one hand, with a solenoid actuator (60) which retains the lever in the locking position and, on the other hand, with a spring (53) which urges the lever (50) towards an unlocked position and drives the arm (40) towards the unlocked position, a control circuit (5) which provides the actuation command by means of an action on the solenoid valve (60) and on the actuation member (30) for the arming movement of the carriage (10). |
