Lock

• US 20090049875A1
• Filed: 07/25/2008
• Published: 02/26/2009
• Est. Priority Date: 07/27/2007
• Status: Active Grant

• Current Assignee: ABUS August Bremicker Söhne KG
• Original Assignee: August Bremicker Söhne KG
• Inventors: Schell, Friedhelm, Becker, Thomas, Buhl, Joachim, Hommel, Martin
• Granted Patent: US 8,127,577 B2
• Time in Patent Office: Days
• US Class Current: 70/52
• CPC Class Codes: E05B 17/0062 with destructive disengagement
• CPC Class Codes: E05B 17/2092 Means responsive to tampering or attack providing additional locking for safes E05B65/0082
• CPC Class Codes: E05B 67/063 Padlocks with removable shackles
• CPC Class Codes: E05B 67/24 with built- in cylinder locks
• CPC Class Codes: Y10T 70/452 Sliding
• CPC Class Codes: Y10T 70/454 Removable
• CPC Class Codes: Y10T 70/459 Both legs engaged
• CPC Class Codes: Y10T 70/461 Short leg engaged
• CPC Class Codes: Y10T 70/463 Long leg engaged
• CPC Class Codes: Y10T 70/489 Housings
• CPC Class Codes: Y10T 70/7915 Tampering prevention or attack defeating
• CPC Class Codes: Y10T 70/7921 Armoring
• CPC Class Codes: Y10T 70/7932 Anti-pick
• CPC Class Codes: Y10T 70/7949 Yielding or frangible connections

Abstract

The invention relates to a lock, in particular a hoop lock, having a lock housing, in which a locking cylinder of the lock is arranged, including a cylinder housing, a barrel rotatably mounted in the cylinder housing and a driver unit associated in a drive effective manner with the barrel, and having at least one bolt coupled to the barrel via the driver unit, so that by rotating the barrel the at least one bolt is moveable from a locked position into a release position. The lock housing has a receiving space in an axial extension of the locking cylinder, with the locking cylinder or a part thereof being able to be displaced from an operational position into the receiving space on the application of a predefined force in the axial direction of the locking cylinder, to adopt a sabotage position, in which the coupling of the at least one bolt to the barrel is taken out of operation.

Claims

1. A lock, in particular a hoop lock, having a lock housing (15, 21), in which a locking cylinder (27) of the lock is arranged, including a cylinder housing (31), a barrel (33) rotatably mounted in the cylinder housing (31) and a driver unit (35) associated in a drive effective manner with the barrel (33), and having at least one bolt (19) coupled to the barrel (33) via the driver unit (35), so that by rotating the barrel (33) the at least one bolt (19) is moveable from a locked position into a release position, characterized in that the lock housing (15, 21) has a receiving space (45) in an axial extension of the locking cylinder (27), with the locking cylinder (27) or a part thereof being able to be displaced from an operational position into the receiving space (45) on the application of a predefined force in the axial direction of the locking cylinder (27), to adopt a sabotage position, in which the coupling of the at least one bolt (19) to the barrel (33) is taken out of operation.

2. A lock in accordance with claim 1, characterized in that fixing means (43) are provided, which in the operational position fix the locking cylinder (27) or of the part thereof, wherein the fixing means (43) can be overcome by the application of the predefined force from the locking cylinder (27) or of the part thereof.

3. A lock in accordance with claim 2, characterized in that the fixing means include at least one fixing lug (43) formed at the lock housing (15, 21) for the locking cylinder (27).

4. A lock in accordance with claim 2, characterized in that the fixation means inbeds a wall section for the barrel (33) at an axial end of the locking cylinder (27).

5. A lock in accordance with claim 1, characterized in that holding means (47) are provided, which in the operational position of the locking cylinder (27) or of the part thereof are arranged bordering the at least one bolt (19), with the holding means (47) being capable of being overcome by the at least one bolt (19) by the application of the predefined force.

7. A lock in accordance with claim 2, characterized in that the fixing means (43) are formed to break off or break through should the predefined applied force be reached.

8. A lock in accordance with claim 1, characterized in that the lock housing (15, 21) includes retaining means (51), which are formed to hold the locking cylinder (27) or of the part thereof following their displacement in the sabotage position.

9. A lock in accordance with claim 8, characterized in that the retaining means are formed as a taper (51) of the cavity (41) of the lock housing (15, 21), into which the locking cylinder is placed in the operational position.

10. A lock in accordance with claim 1, characterized in that, the lock includes fixing means (49), which in the sabotage position of the locking cylinder (27) or of the part thereof prevent the at least one bolt (19) from a movement out of the locked position into the release position.

11. A lock in accordance with claim 1, characterized in that, in the sabotage position of the locking cylinder (27) or of the part thereof, the at least one bolt (19) is in operative connection with a lug portion (50) of the lock housing (15, 21), which blocks the bolt (19) from a movement out of the locked position into the release position.

12. A lock in accordance with claim 1, characterized in that the bolt (19) is supported in the lock housing (15) in such a way, that upon moving the locking cylinder (27) or of the part thereof the bolt (19) experiences a plastic deformation.

13. A lock in accordance with claim 1, characterized in that, in the sabotage position of the locking cylinder (27) or of the part thereof, a blocking section (63) of the locking cylinder (27) prevents the at least one bolt (19) from a movement out of the locked position into the release position.

14. A lock in accordance with claim 1, characterized in that, in the sabotage position of the locking cylinder (27) or of the part thereof, at least one associated coupling section of the driver unit (35) and at least one coupling section of the at least one bolt (19) are decoupled from one another.

15. A lock in accordance with claim 1, characterized in that, in the sabotage position, the drive effective relationship of the driver unit (35) and the barrel (33) is disengaged.

16. A lock in accordance with claim 1, characterized in that, in the direction of the longitudinal axis (29) of the locking cylinder (27), the receiving space (45) has a smaller extent than the locking cylinder (27).

17. A lock in accordance with claim 1, characterized in that the driver unit (35) is arranged in the axial extension of the barrel (33) and/or is coaxially arranged relative to the barrel (33).

18. A lock in accordance with claim 1, characterized in that the at least one bolt (19) is pivotally connected to the driver unit (35).

19. A lock in accordance with claim 1, characterized in that two bolts (19) are provided, with the driver unit (35) having two eccentrically arranged driver cams (37), at each of which one of the bolts (19) is pivotally disposed.

20. A lock in accordance with claim 1, characterized in that, in the operational position of the locking cylinder (27) or of the part thereof, the at least one bolt (19) is prestressed in the direction of the driver unit (35) and is in contact with an eccentric peripheral contact region (59) of the driver unit (35), with respect to the axis of rotation of the driver unit (35).

21. A lock in accordance with claim 1, characterized in that the direction of movement of the at least one bolt (19) extends perpendicular to the longitudinal axis of the locking cylinder (27).

22. A lock in accordance with claim 1, characterized in that the at least one bolt (19) is formed as a bolt plate at its end adjacent to the driver unit (35) and/or as a bolt block (25) at its end facing the locking region.

23. A lock in accordance with claim 5, characterized in that the holding means (47) are designed to break off or break through should the predefined applied force be reached.

6. A lock in accordance with claim S, characterized in that the holding means include at least one holding lug (47) formed at the lock housing (15, 21) for the at least one bolt (19).