Multistage Door Lock

• US 20090236865A1
• Filed: 04/13/2007
• Published: 09/24/2009
• Est. Priority Date: 04/13/2006
• Status: Active Grant

• Current Assignee: Rahrbach GmbH
• Original Assignee: Rahrbach GmbH
• Inventors: Kuhnke, Thorsten, Dziurdzia, Jan Marian
• Granted Patent: US 8,646,816 B2
• Time in Patent Office: Days
• US Class Current: 292/226
• CPC Class Codes: E05B 15/0295 specially adapted for forked or bifurcated bolts for vehicles E05B85/045
• CPC Class Codes: E05B 17/0029 motor-operated for vehicles E05B81/20
• CPC Class Codes: E05B 2047/0069 bolt position
• CPC Class Codes: F24C 15/022 Latches
• CPC Class Codes: Y10T 292/1047 Closure
• CPC Class Codes: Y10T 292/1059 Lever
• CPC Class Codes: Y10T 292/1082 Motor

Abstract

Disclosed is an electromechanical locking device for a door of an appliance, particularly an oven. Said locking device comprises a lock (1) on the appliance and a hook (2) on the door. The lock (1) is provided with bolts (3, 4) on both sides of the hook (2), said bolts (3, 4) allowing the door to be opened and closed in an intermediate latched stage and a main latched stage.

Claims

1. An electromechanical locking device for an appliance door, in particular for an oven door, with a lock (1) on the side of the appliance and a hook (2) on the side of the door, characterized in that bolts (3, 4) are arranged in the lock (1) on both sides of the hook (2), and said bolts are configured so as to make possible opening and closing the door in an intermediate latched stage and in a main latched stage.

2. The locking device of claim 1, characterized in that both bolts (3, 4) have mutually corresponding locking surfaces (8, 9).

3. The locking device of claim 1, characterized in that a first bolt (3) is configured as a swivel-mounted rotary door latch (5).

4. The locking device of claim 3, characterized in that the rotary door latch (5) has an elongated holder (17) for the hook (2).

5. The locking device of claim 1, characterized in that a second bolt (4) is arranged on the opposite side (19) of the hook (2) with respect to the rotary door latch (5).

6. The locking device of claim 5, characterized in that the second bolt (4) has a locking lever (6) and a locking pawl (7) on the side of the hook.

7. The locking device of claim 6, characterized in that the locking lever (6) and the locking pawl (7) can be mutually connected by means of a mortise and tenon joint (21).

8. The locking device of claim 2, characterized in that the locking surfaces (8, 9) are configured as recesses (34, 38) and/or projections (35, 36, 37).

9. The locking device of claim 8, characterized in that the rotary door latch has two projections (35, 37) and the locking pawl (7) has one projection (36).

10. The locking device of claim 8, characterized in that both bolts (3, 4) are equipped with status sensors (18, 22).

11. The locking device of claim 1, characterized in that the bolts (3, 4) can be controlled directly or indirectly via separate drive motors (11, 12).

12. The locking device of claim 11, characterized in that rotatably mounted cams (13, 14) serve to transfer the torque exerted by the drive motors (11, 12).

13. The locking device of claim 1, characterized in that the hook (2) has a pin (30) on its front side (23) and a wedge (29) on its inside (24) at a distance from the pin.