Granted Patent B2

US 12,644,311 · App. 18/534,050 · Granted Jun 2, 2026

Inventors: Anatoli Stobbe (Barsinghausen, DE); Klaus Göppert-Boenke (Bad Salzdetfurth, DE)

Assignee: ASTRA GESELLSCHAFT FUR ASSET MANAGEMENT MBH & CO. KG

E05B47/0047E05B2047/0054E05B2047/0069

Abstract

Claims (12)

1 . A door opener for a door having a wing pivotally mounted to a door frame, said door opener comprising:

a main body;

a door opener latch hingedly mounted in the main body and pivotable between a closed position and an open position;

a blocking member that is mounted in the main body and linearly displaceable from a locking position into a release position and back, the blocking member in its locking position forming a stop for the door opener latch in the closed position to prevent pivoting of the door opener latch into the open position, and the blocking member in its release position being so far offset from the door opener latch that the door opener latch may be pivoted from the closed position to the open position and back without any restriction of movement by the blocking member; and

an actuator coupled with the blocking member for releasing or locking the door opener latch,

wherein the actuator comprises a motor having a rotatable shaft supporting a worm thread, and a spring member having two end portions is provided, wherein a first end portion of the spring member comprises spring coils that directly engage with the worm thread in order to displace the spring member linearly in the direction of extension of the rotatable shaft by rotating the worm thread, and wherein a second end portion of the spring member is connected to the blocking member in order to displace the blocking member linearly in said direction of extension of the rotatable shaft from the locking position to the release position and back, and wherein the blocking member is decoupled from the actuator by the spring member arranged intermediate between the worm thread and the blocking member, wherein the spring member in the biased state serves as a store of energy with the spring force of the spring member in the biased state acting upon the blocking member to move the blocking member in the release position of the blocking member.

2 . The door opener according to claim 1 , wherein the actuator comprises a linearly displaceable plunger which is arranged to act upon the blocking member, in order to displace the blocking member from the locking position into the release position when the plunger is moved in the direction of the blocking member, wherein the plunger is connected to the second end portion of the spring member.

3 . The door opener according to claim 1 , wherein the plunger is guided in a rotationally fixed manner.

4 . The door opener according to claim 1 , wherein in two end positions, the spring member does not engage with the worm thread and is no longer displaced by the worm thread upon the latter's further rotation.

5 . The door opener according to claim 1 , wherein in the closed position, the door opener latch protrudes beyond the outline of the main body.

6 . The door opener according to claim 1 , wherein a door sensor is provided for monitoring the presence of a door lock latch.

7 . The door opener according to claim 6 , comprising control electronics, wherein the door sensor and the actuator are coupled with the control electronics and in that the control electronics for driving the actuator is configured to transfer the blocking member into the release position in the presence of a door release signal and to bring the blocking member back into the locking position, once the absence of the door lock latch is detected by the door sensor.

Assignments (2)

Priority Claims (1)

Continuity (1)

References Cited (31)