Device for securing a door leaf against unintentional deflection

• US 20040066047A1
• Filed: 12/01/2003
• Published: 04/08/2004
• Est. Priority Date: 02/09/2001
• Status: Active Grant

• Current Assignee: Dorma GmbH + Company KG (dormakaba Holding AG)
• Original Assignee: Dorma GmbH + Company KG (dormakaba Holding AG)
• Inventors: Rockenbach, Manfred
• Granted Patent: US 6,959,949 B2
• Time in Patent Office: Days
• US Class Current: 292/251.5
• CPC Class Codes: E05B 65/0071 for revolving doors
• CPC Class Codes: E05D 15/02 for revolving wings
• CPC Class Codes: E05Y 2900/132 Doors
• CPC Class Codes: E06B 3/90 Revolving doors; Cages or housings therefor turnstiles E06B11/08
• CPC Class Codes: F16D 2121/20 using electromagnets
• CPC Class Codes: Y10S 292/65 Emergency or safety
• CPC Class Codes: Y10T 292/0908 Emergency operating means
• CPC Class Codes: Y10T 292/0909 Panel
• CPC Class Codes: Y10T 292/1021 Motor
• CPC Class Codes: Y10T 292/1082 Motor
• CPC Class Codes: Y10T 292/11 Magnetic

Abstract

The invention relates to a device for securing the door leaves (1) of a multiple-leaf door system against unintentional deflection from the normal operating position. Said device comprises a lock (retaining device (HV) that is located in the vicinity of the ends of the door leaves (1) and is configured as a switching gear. The lock can be secured in the normal position by an integrated magnetic brake (MB).

Claims

1. Device for electromagnetically preventing the leaves of an at least single-leaf door system located in an escape and rescue route from being unintentionally swung out of the normal operating position, characterized in that each leaf (1) of the door has its own rotational direction-independent locking mechanism (7, 9, 11, 25-30) to serve as a controllable securing means which can be locked by a magnetic brake (MB), the driving part (7) of which mechanism is mounted permanently to the leaf frame (6), whereas the driven part (9) is mounted permanently but rotatably to the door frame (31), where the driving part (7) can be returned automatically to the starting position.

2. Device according to claim 1, characterized in that the part (9) has an electrical, mechanical, pneumatic, or hydraulic stored-energy device, which can be charged during a deflection from the normal operating position.

3. Device according to claim 1, characterized in that the locking mechanism comprises

a retaining bolt (7), which is mounted on the upper leaf frame (6) of the leaf (1) near the end of the leaf (1) facing the boundary wall (38);

a pivotably supported a fork arm (9), which can be brought into and out of working connection with the retaining bolt (7); and

a fork bracket (25), which can be pivoted synchronously together with the fork arm (9) and which cooperates with latching elements (27-30),

where the fork arm (9) and the fork bracket (25) are attached to a rotatably supported bolt (11), which supports a brake flange (24) forming a part of the magnetic brake (MB).

4. Device according to claim 3, characterized in that the force of the magnetic brake (MB) is continuously variable.

5. Device according to claims 1 and 3, characterized in that the magnetic brake (MB) is mounted on the top surface of a roof structure (31) connected to the door system, and in that the flange bearing (40) of the bolt (11) is attached to the bottom of the roof structure (31), which has at this point a hole (21), which allows the bolt (11) to pass through.

6. Device according to claims 1-5, characterized in that a switch (26), which is part of a circuit arrangement which controls the door system, is assigned to the latching elements (27-30), where the switch scans the position of the switching disk (i.e., the fork bracket 25), which carries the latching surfaces (42, 43, 44).

7. Device according to claims 1-6, characterized in that the switching disk has three latching surfaces (42, 43, 44) offset 30°

from each other, the center latching surface (43) being in alignment with a longitudinal axis (45), which intersects the center of the bolt (11), the center of the fork arm (9), and the center of the cam-scanning roller (28).

8. Device according to claims 1-6, characterized in that the fork arm (9) has, at its free end, a fork opening (10), which expands toward the end, the retaining bolt (7) being held approximately in the middle of this opening.

9. Device according to the preceding claims, characterized in that the door system comprises a revolving door, which is installed so that it can rotate radially with respect to boundary walls in the form of segments of a cylinder.

10. Device according to the preceding claims, characterized in that the door system has horizontally movable sliding elements.