Locking Device with a Locking Cylinder and a Key

• US 20090025442A1
• Filed: 08/12/2006
• Published: 01/29/2009
• Est. Priority Date: 09/07/2005
• Status: Active Grant

• Current Assignee: Huf Hulsbeck & Furst GmbH & Co. KG
• Original Assignee: Huf Hulsbeck & Furst GmbH & Co. KG
• Inventors: Habecke, Matthias, Jacob, Dirk, Klein, Helmut
• Granted Patent: US 7,690,232 B2
• Time in Patent Office: Days
• US Class Current: 70/492
• CPC Class Codes: E05B 19/0029 characterized by varying cross-sections of different keys within a lock system cross-sections of single keys E05B19/0041
• CPC Class Codes: E05B 29/00 Cylinder locks and other locks with plate tumblers which are set by pushing the key in fastening of cylinders, rotors, plugs or cores E05B9/084; with magnetic tumblers E05B47/0044; with electromagnetic control E05B47/0611
• CPC Class Codes: Y10T 70/7599 Transverse of plug
• CPC Class Codes: Y10T 70/7881 Bitting

Abstract

The locking device consists of a locking cylinder and a key (20.2). The locking cylinder comprises a cylinder core with tumblers (13. 14.1) in a cylinder core, which is rotatably mounted in a cylinder housing. Standard coding for the key (20.2) is produced by a step (28) with longitudinal profiling on at least one flat side of the edge profile of the key (20.2), said step being associated with a counter step (30) on the tumbler (13). In addition to the standard coding produced by (28, 30), the key has at least one set of bevelled edge coding (27.1. 27.4) in a corner section of the edge profile. The bevelled edged coding consists of recesses in the form of bevelled cuts in the corresponding corner sections of the edge profile, relative to which are provided counter touching points (47.1) in he corresponding tumbler (14.1). In a section of the key shaft, either the standard coding or bevelled edge coding can optionally be used, thereby considerably increasing the diversity of the claimed locking device whilst retaining the space-saving design.

Claims

1. A lock device

with a lock cylinder (10), which consists of a stationary cylinder housing (11) and a cylinder core (12) rotatably supported therein,

with a key (20.1, 20.2), which has an edge profile (25.1, 25.2) and can be inserted into an axial keyway (15) of the cylinder core (12) in order to sort tumblers (13, 14.1 to 14.3)), which can move transversely to it, onto the cross section of the cylinder core (12),

with at least one longitudinally profiled shoulder (28) on a flat side (38;

39) of the edge profile (25.1), which shoulder (28) extends in the longitudinal direction and produces different scanning points of a standard coding (26, 53) on the key (20.1;

20.2) by virtue of the course of its profile, and

with a cooperating shoulder (30) on at least some tumblers (13), which then act as standard tumblers (13),

where, when the key (20.1;

20.2) is inserted, the cooperating shoulders (30) of all the standard tumblers (13) are supported on the longitudinally profiled shoulder (28) of the key and produce a standard counter coding (16) that is complementary to their standard coding (26, 53) of the key (20.1;

20.2), wherein,

in addition to the standard coding (26), the key (20.1;

20.2) has a beveled coding (27.1 to 27.4) in at least one corner region of its edge profile (25.1, 25.2), because bevel cuts (29.1 to 29.4) of variable depth (36.1 to 36.3) are cut into the corner regions of its edge profile (25.1, 25.2), thus forming profiled corner strips (21 to 24), which extend in the longitudinal direction of the key and carry the beveled codings (27.1 to 27.4);

where an oblique cooperating scanning point (47.1 to 47.4) in the tumbler (14.1 to 14.3) is associated with at least one point that is to be scanned in the beveled coding (27.1 to 27.4) of the key 20.1;

20.2), which tumbler then interacts as a beveled tumbler (14.1 to 14.3) with the inserted key (20.1;

20.2); and

where the oblique cooperating scanning points (47.1 to 47.4) on the family of beveled tumblers (14.1 to 14.3), which are located together in a cylinder core (12), produce a beveled countercoding in the lock device (10).

2. A lock device according to claim 1, wherein the profiled shoulder of the standard coding consists of one of the edges of a profiled groove (28), which extends in the longitudinal direction of the key and is cut into at least one broad side (36, 37) of the key (20.1;

20.2).

3. A lock device according to claim 1, wherein the cooperating shoulder of the standard tumbler consists of one of the flanks of a projection (30), which, when the key (20.1;

20.2) is inserted, acts on a well-defined scanning point in the key groove (28).

4. A lock device according to claim 1, wherein the scanning direction (31) of the beveled tumbler (14.1) is oriented essentially parallel to the scanning direction (35) of the standard tumblers (13).

5. A lock device according to claim 1, wherein the scanning direction (32) of the beveled tumbler (14.2) is oriented essentially perpendicularly to the scanning direction (35) of the standard tumbler (35).

6. A lock device according to claim 1, wherein the scanning direction (33, 34) of the beveled tumbler (14.3) is oriented at an oblique angle (48) to the scanning direction (35) of the standard tumbler (35).

7. A lock device according to claim 6, wherein the angle (48) of the scanning direction (33, 34) is 30-50°

.

8. A lock device according to claim 1, wherein several corner strips (21 to 24) of the edge profile (25.1) of the key (20.1, 20.2) are provided with a beveled coding (27.1 to 27.4).

9. A lock device according to claim 8, wherein all of the corner strips (21 to 24) of the edge profile (20.1) of the key (20.1, 20.2) are provided with a beveled coding (27.1 to 27.4).

10. A lock device according to claim 8, wherein the beveled codings (27.1 to 27.4) of the various corner strips (21 to 24) of a key (20.1, 20.2) are designed to be the same as or different from one another.

11. A lock device according to claim 1, wherein the scanning direction (31 to 34) of successive beveled tumblers (14.1 to 14.3) alternates among essentially parallel (31), perpendicular (32), and at an oblique angle (33, 34) to the scanning direction (35) of the standard tumblers (13).

12. A lock device according to claim 11, wherein, to increase the range of variation of the codings, one can optionally place either a standard tumbler (13) or a beveled tumbler (14.1 to 14.3) with a scanning direction (31 to 34) of its beveled coding (27.1 to 27.4) that is the same as or different at a given scanning point of the key (20.1, 20.2).

13. A lock device according to claim 1, wherein the standard tumbler (13) and/or the beveled tumbler (14.1 to 14.3) is spring-loaded in its scanning direction (31 to 35).

14. A lock device according to claim 1, wherein a pair of beveled codings (27.1 and 27.3 or 27.2 and 27.4), which are located on opposite corner strips (21 and 23 or 22 and 24) in the edge profile (25.1) of the key (20.1, 20.2), produces a matching pair of beveled codings, which serves the purpose of positive guidance of a common beveled tumbler, and that the common beveled tumbler has a matching pair of cooperating scanning points for the pair of beveled codings (27.1 and 27.3 or 27.2 and 27.4) at this scanning point of the key (20.1, 20.2).

15. A lock device in accordance with claim 1, wherein the beveled coding (27.1 to 27.4) of the key (20.1, 20.2) is the same as the standard coding (26).

16. A lock device in accordance with claim 1, wherein the beveled coding (27.1 to 27.4) of the key (20.1, 20.2) is different from the standard coding (26).

17. A lock device according to claim 1, wherein the bevel cuts (27.1, 27.2) of adjacent beveled codings (27.1, 27.2) of a key (20.2) do not overlap each other but rather are separated by a lateral distance (17), and in that a certain section of the edge profile (25.2) of the key (20.2) remains where this lateral distance (17) is present can thus serve the purpose of guiding the key (20.2) in the keyway (15) of the cylinder core (12).

18. A lock device according to claim 1, wherein the edge profile (15.2) of the key (20.1, 20.2) is a rectangle.

19. A lock device according to claim 16, wherein the rectangular key (25.2) is designed as a so-called flat key with opposing broad faces (38, 39).