One exemplary embodiment of the invention will be explained in more detail below with reference to the drawing, in which:
FIG. 1 shows a three-dimensional view of a lock cylinder according to the invention, individual parts being withdrawn from one another,
FIG. 2 shows a three-dimensional view of the rotary knob and the rotary knob rotor, in this case individual parts also being withdrawn from one another,
FIG. 3 shows a three-dimensional view of each station of the floating mounting of the rotary knob on the lock cylinder,
FIG. 4 shows a simplified sectional illustration of a cylinder lock according to the invention,
FIG. 5 shows a three-dimensional view of an actuator and a connection cable,
FIG. 6 shows a view of a connecting web with an inserted cable,
FIG. 7 shows a view of the connecting web, the cable being omitted, and
FIGS. 8
a-8d show views of different profiles of the lock cylinder according to the invention.
The lock cylinder 1 shown in FIG. 1 has essentially a first cylinder half 2, a second cylinder half 3 and a rotary knob 24. The two cylinder halves 2 and 3 are connected detachably to one another by a connecting web 12. The first cylinder half 2 has a housing 5 and a rotor 7 and pin tumblers (not shown here) which can be positioned by a key 44 indicated in FIG. 4. For this purpose, the rotor 7 has a key channel 8. In addition, the further blocking apparatus, which is shown in FIG. 5 and can be driven by a signal from electronics 17 accommodated in the handle part 25, is arranged in the first cylinder half 2.
A driver 10 is arranged between the two cylinder halves 2 and 3 and has a beard 11, with which a bolt (not shown here) of a lock can be actuated. The driver 10 is connected, such that it is fixed against rotation, to a rotary knob rotor 4, which in turn is connected, such that it is fixed against rotation, to the rotary knob 24. By means of rotating the rotary knob, the driver 10 can be rotated and therefore the mentioned bolt displaced. A coupling member 23, which can be displaced axially counter to the reactive force of a spring 22, is connected to the driver 10 when the key 44 is inserted into the key channel 8 of the rotor 7. The driver 10 can therefore be rotated by means of an authorized key 44, and therefore the mentioned bolt can likewise be displaced.
The second cylinder half 3 has a housing 6 having a passage 51, in which the rotary knob rotor 4 is mounted. The housing 6 can be extended by extension pieces 16, which have the same profile as the housing 6 and which each likewise have a passage 52. The housing 5 of the first cylinder half 2 can also be extended by these extension pieces 16. If such extension pieces 16 are used, the rotary knob rotor 4 must be correspondingly extended. For this purpose, extension pieces 18a, 18b and 18c of different lengths are provided. In order to connect the extension pieces 18a to 18c to the rotary knob rotor 4, said rotary knob rotor 4 has a dovetailed groove 19, into which a corresponding slide part 19a of the intermediate piece 18a, 18b or 18c can be inserted. An identical connection is also provided with a coupling piece 21. The coupling piece 21 has a groove 61, into which a latching element (not shown here) is inserted with which the coupling piece is anchored on the cylinder.
The cylinder housing 6 also has a cutout 15 in a cylinder sack, which cutout 15 accommodates one half of the connecting web 12. In order to anchor the housing 6 on the connecting web 12, the housing 6 has a hole 54 for accommodating a pin 14. The extension pieces 16 likewise have corresponding cutouts 53. The connecting web 12 has, in the center, an enlarged section 49 (FIG. 6) with a fore-end screw hole 13.
As has already been mentioned above, the first cylinder half 2 has conventional pin tumblers, which are positioned by control faces (not shown here) of the key 44. These control faces are realized, for example, by holes in the shank 44a of the key 44. The key 44 is preferably a reversible key, but in principle it may also be in the form of a so-called serrated key or have another form. In order to electronically block the rotor 7 of the first cylinder half 2, the blocking apparatus 43 shown in more detail in FIG. 5 is provided. This blocking apparatus 43 is mounted in the lower part and therefore in the cylinder sack 9 of the housing 5, as shown in FIG. 1. The blocking apparatus 43 has a housing 55, on which a blocking part 46 is mounted, as shown in FIG. 5. This blocking part 46 can be moved between two positions by a motor (not illustrated here) which is accommodated in the housing 55. In one of the positions, the blocking part 46 engages in cutouts in the rotor 7 and blocks them with respect to the housing 55. In the other, withdrawn position, this engagement is cancelled. In addition, an antenna 47 is arranged on the housing 55 and receives signals from a transmitter 56 which is arranged in the key 44. The blocking part 46 and the antenna 47 form a unit, which does not impair the mechanical functioning of the pin tumblers. The blocking apparatus 43 is connected, via an electrical cable 29, to electronics 17, which are arranged in the rotary knob 24 and therefore on the inside of the door, as shown in FIG. 4. The blocking apparatus 43 is connected to a current source and in particular a battery 41 via the cable 29 for the purpose of actuating the motor, which battery is likewise arranged in the rotary knob 24, as shown in FIG. 4. The battery 41 and the electronics 17, which are arranged on a plate 36, are fixed to a carrier 32, which is shown in FIG. 2. A battery holder 33 is inserted in the carrier 32 and is fixed on a disk 57 by means of cellular rubber 34, which disk 57 is fixed to the carrier 32 by two fixing screws 35. The plate 36 with the electronics is fixed to the carrier 32 by four fixing screws 37. In order to accommodate an extension 4a of the rotary knob rotor 4, the carrier 32 has a passage 58. A bearing disk 39, which is connected such that it is fixed against rotation to two pins 38, is arranged on the carrier 32. In order to accommodate the two pins 38, the carrier 32 has two corresponding holes 59 on the front. The carrier 32 is arranged in a circular-cylindrical sleeve 31, which is produced from plastic and is used as the slide sleeve for the handle part 25.
In order to replace the battery 41, the lock cylinder needs to be disassembled in order that the snap ring 26 is accessible. It is therefore hardly possible to remove the battery 41 without this being noticed.
FIG. 3 shows the position of the bearing disk 39, which, as mentioned, is connected such that it is fixed against rotation to the carrier 32 and therefore to the electronics 17. In order to accommodate the extension 4a of the rotary knob rotor 4, the bearing disk likewise has a central passage 60. In order to axially fix the bearing disk 39, a snap ring 26 is provided which is inserted into a groove 61 in the handle part 25, as shown in FIG. 3. The rotary knob 24 therefore forms a compact unit with the bearing disk 39, the electronics 17 and the batteries 41. FIG. 3 shows the manner in which the rotary knob 24 is pushed axially onto the rotary knob rotor 4 in the direction of the arrow 40.
In order to fix the rotary knob 24 on the rotary knob rotor 4 axially such that it can be detached, said rotary knob rotor 4 has a groove 62 on the outside for the purpose of accommodating a snap ring 27, which connects the rotary knob 24 to the rotary knob rotor 4 detachably. In order that the rotary knob rotor 4 rotates concomitantly with the handle part 25, the rotary knob rotor 4 has a surface 20 at the free end which forms a stop in a driver 45.
If the rotary knob 24 is fixed on the rotary knob rotor 4, the rotary knob rotor 4 and, with it, the driver 10 can be rotated. In this case, only the handle part 25 is preferably rotated with the rotary knob rotor 4. The electronics 17 and the batteries 24, on the other hand, are connected in a floating manner to the housing of the second cylinder half 3 by a pin 28, as shown in FIG. 4. As shown in FIG. 1, the pin 28 engages with one end in a cutout 63 in the housing 6 and with the other end in a cutout 64 in the bearing disk 39. The cutout 63 or the cutout 64 are designed such that the pin 28 is mounted in a floating manner with radial play in at least one of these two cutouts. This prevents impacts, which are caused for example by a door being slammed shut, from being transmitted to the electronics 17.
The bearing disk 39 has a further hole 65, through which the cable 29 is drawn, as shown in FIG. 4. The cutouts 64 and 65 can also be replaced by a common and correspondingly larger cutout (not shown here). The cable 29 and the pin 28 are then mounted in this cutout. The bearing disk 39 is therefore connected to the second cylinder half 3 in a floating manner by the pin 28. The connection is a plug-in connection, with the result that only one hole is required in the second cylinder half 3 for the purpose of accommodating the pin 28. Such a hole can be fitted in the case of each conventional cylinder profile and in particular in the case of the cylinder profiles shown in FIGS. 8a to 8d. In order to produce the electromechanical lock cylinder in accordance with the present invention, all conventional profiles can therefore be used, in which case there is comparatively little conversion work. The mechanically proven design of the rotary knob rotor with the rotary knob coupling or the coupling member 23 does not need to be substantially changed. In terms of lock technology, the first cylinder half 2 can be completely fitted with tumbler pins. The rotary knob rotor 4 is a universal carrier of rotary knobs 24 having different external shapes and profiles. A rotary knob 24 without any electronics can therefore also be used.
Owing to the simple design and the possibility of extending the two cylinder halves 2 and 3 and the rotary knob rotor 4, it is possible to extend or shorten the electronic lock cylinder according to the invention at the point of installation. The two plugs 30 and 42 make it possible to detach the cable 29 from the blocking apparatus 23 and the electronics 7. This can also be carried out by a non-professional. The connecting web 12 can be used universally for different cylinder lengths with the integrated cable 29. As is shown in FIGS. 6 and 7, the connecting web 12 has a groove 50 on its underside, into which groove the cable 29 is inserted. The cable 29 can only be seen from the outside from below in the region of the enlarged section 49. Of the four passages 48, in each case only two are used, with the result that in total four different lengths can be fitted with the connecting web 12. As has been mentioned, it is thus possible for there to be considerable reductions in terms of storage and costs.
List of Reference Symbols
1 Lock cylinder
2 First cylinder half
3 Second cylinder half
4 Rotary knob rotor
4
a Extension
5 Housing
6 Housing
7 Rotor
8 Key channel
9 Cylinder sack
10 Driver
11 Beard
12 Connecting web
13 Fore-end screw hole
14 Pin
15 Cutout
16 Extension pieces
17 Electronics
18
a Intermediate piece
18
b Intermediate piece
18
c Intermediate piece
19 Dovetailed groove
19
a Slide part
20 Surface
21 Coupling piece
22 Spring
23 Coupling member
24 Rotary knob
25 Handle part
26 Large snap ring
27 Small snap ring
28 Pin
29 Cable
30 Plug
31 Sleeve
32 Carrier
33 Battery holder
34 Cellular rubber
35 Connection screw
36 Plate
37 Connection screw
38 Pins
39 Bearing disk
40 Arrow
41 Battery
42 Plug
43 Blocking apparatus
44 Key
44
a Shank
45 Driver
46 Blocking part
47 Antenna
48 Holes
49 Enlarged section
50 Groove
51 Passage
52 Passage
53 Cutouts
54 Hole
55 Housing
56 Transmitter
57 Disk
58 Passage
59 Holes
60 Passage
61 Groove
62 Groove
63 Cutout
64 Cutout
65 Cutout
Patent Application
20080028808
