Actuating device for moving a movable cover of a thrust reverser

An actuating device (1) for moving a movable cover of a thrust reverser, comprising:

• an actuator including a first element (3) and a second element (4) mounted movable in translation relative to the first element, one of the first element and the second element being a screw, and the other being a nut configured to cooperate with the screw, such that rotation of the first element (3) relative to the second element (4) brings about translation of the second element (4) relative to the first element (3), and
• a locking device (17) including a locking piece (18) movable in rotation between a locked position wherein the locking piece (18) prevents rotation of the first element (3) and an unlocked position wherein the locking piece (18) allows rotation of the first element (3),
• wherein the locking device (17) includes a tooth (20, 21) mounted so as to rotate together with the first element (3), and the locking piece (18) includes a latch (47) including a locking portion (48) having a convex portion (50) and a plane or substantially concave portion (51), the convex portion (50) being configured to interfere with the tooth (20, 21) when the convex portion (50) is facing the tooth (20, 21) and the plane or substantially concave portion (51) is facing away from the tooth (20, 21) to prevent rotation of the first element (3), and the plane or substantially concave portion (51) being configured to allow rotation of the first element (3) when the plane or substantially concave portion (51) is facing the tooth (20, 21) and the convex portion (50) is facing away from the tooth (20, 21),
• wherein the plane or substantially concave portion (51) of the latch (47) is complementary in shape to the surface of the tooth (20, 21) which it is configured to face,
• wherein the tooth (20, 21) is asymmetrical so that, in the locked position, the locking piece (25) prevents rotation of the first element (3) in a first direction (A) and allows rotation of the first element (3) in a second direction (B), opposite to the first direction,
• wherein the locking portion (48) exhibits a semi-circular shape.