DE2900992A1 - Cylindrical lock suitable for motor vehicle - has cylindrical core comprising two interconnected independently-rotating coaxial parts, each with channel for flat key - Google Patents

Abstract

The lock has a cylindrical core divided into two parts across its axis. The channels for the flat key in the part cylinders are rotated w.r.t. one another when the lock is locked such that only the channel in the first part cylinder is accessible to the key. Only after the first part cylinder has been disengaged and rotated by an appropriate angle can the key pass farther and into the channel in the second part cylinder. Both part cylinders are then rotated to unlock the lock. A spring is located between the two part-cylinders, which after the rotation of and pressure from the first part cylinder allows a claw-like linkage between the two part-cylinders to engage. This lock is suitable as a steering wheel ignition or door lock for a motor vehicle.

Description

Patent description:

ßichorh.its cylinder lock with cylinder division for triggering @@ each other independent sequences of events.

The subject of the invention is a cylinder safety lock mainly magnetically operated tumblers of the cylinder core of the transversely divided so that it consists of at least two Deilzylindern. These partial cylinders are in the locked state of the lock with the key removed by springs twisted against each other at a certain angle. The key channel of the Cylinder core blocked for .. a complete introduction of the key. Through this Measure, the possibility of breaking the lock and its security against theft is made more difficult elevated. The new arrangement also has another advantage: over the various Partial cylinder cores can be consecutively and independently in a certain order different processes (functions) are triggered. Each partial cylinder core with this arrangement has at least one guard locking The following description an embodiment of the lock according to the invention, which is only an example and is not intended to be comprehensive, shows the structure with reference to the accompanying drawings and the operation of such a lock with a split cylinder core.

Figure 1 shows a lock with a longitudinally cut cylinder housing and with two partial cylinder cores in the top view in the closed position; Figure 2 is a Cross section of the same lock along the line A - B in the closed position; Figure 3 is a view corresponding to Figure 1 with a function lever on each Partial cylinder core; FIG. 4 is a cross section like FIG. 2 with a rotated first partial cylinder core.

In the figure 1 are the essential components of the invention Castle shown schematically. The partial cylinder cores are located in the cylinder housing 3 1 and 2, which are in the closed position of the lock by tumblers with the cylinder housing 3 (not shown) in a known manner in the present invention but so that the key channel 5 '(Figure 2) from the part cylinder core 1 against the Key channel 5 "of the partial cylinder 2 is rotated by an angle and the entire Key channel 5 is not the full length for a key. Of the Passage is only free when the first partial cylinder is at a certain angle is rotated. After the key has been fully inserted, the tumblers can also of the cylinder part 2 and thus the entire cylinder core (part 1 and part t) together operated and the lock opened.

In the process of unlocking the lock, a short spring 4 stretched between the first and second cylinder core part and the first cylinder core part via a claw coupling 8 (Figure 3) with the second cylinder core part connected and tensioned a spring 4a on the second cylinder core part, the first Spring 4 with the partial cylinder core part 1 and 2 and the spring 4a with the partial cylinder core 2 and the housing 3 (or ettl. With the following partial cylinder core, etc.) connected is. These springs 4 and 4a bring the two partial cylinders after removing the key back to its original locked position, the construction coupling 8 is used to transmit torque from the wrench head via the first partial cylinder on the second partial cylinder and to relieve the key shaft from one Twist. Furthermore, the sliding movement of the first part cylinder when coupling into the next partial cylinder to actuate a process when opening the lock be exploited. For actuation esp. Triggering further operations can be twofold Rotation of the first partial cylinder and the simple rotation of the second partial cylinder be exploited. It can in this way with the once divided cylinder core A total of four processes are not used - 2 rotation a, shift b1 rotation c and Rotation * (Figure 3).

The transfer of the rotating movement of the part cylinders takes place advantageously by lever 6,6 '£ the through slots 7,7' in Housing 9 from this protrude These levers 6,68 are expediently designed so that after assembly the partial cylinder 1 and 2 in the housing 3 from the outside through the slots 7, 7 'to the 1 and 2 are attached according to known possibilities.

A prerequisite for achieving the advantages of the Lock is the execution of particularly strong tumblers, preferably magnetic actuator flat tumblers The proposed lock is suitable because of the increased Security and the possible triggering of several control processes as enkrad-, Lock and ignition lock in motor vehicles or in other security-sensitive Barriers.

As a modification of the example described above with two partial cylinders it is of course possible9 to increase the number of partial cylinders and then also the number of processes to be triggered. You can also use keys with different lengths to use zOBo for car maintenance or garage parking to be able to trigger only certain processes and thus also a possible copy of the to prevent a complete driving key.

Of course, modifications to this invention can be made by a person skilled in the art and additions are contributed without however changing the idea or scope of the Invention to leave.

L e r s e i t e

Claims (1)

Claims: 1. Security cylinder lock with a cylinder housing, cylinder core located in it and actuation by means of a flat key d a d u r c h e k e n n n z e i c h n e t t that the length of the cylinder core in at least two partial cylinder cores is divided transversely, which are independent of each other and are provided with at least one tumbler each, and the key channels of the partial cylinder rotated by such an angle against each other in the closed position of the lock are that in this position only the keyway of the first partial cylinder lur the key is accessible and only after the guard locking (s) have been unlocked of the first partial cylinder and, after its corresponding rotation, the key channel the other partial cylinders are accessible for the key and complete unlocking the lock is possible 2. Security cylinder lock according to claim 1 d a d u r c h g e k e n n n z e i c ii n e t that there is a spring between the sub-cylinders is located, which after a rotation and a pressure on the first part cylinder a Engage the claw coupling between the first and second (or further) sub-cylinders leaves and after removing the key the first part cylinder back into his brings locked starting position. 3, security cylinder lock according to claims 1 and 2 d a d u r c h e k e k e n n n n e i c h n e t that the two rotations and the longitudinal displacement of the first partial cylinder for release £; can be used by other processes can. 4, security cylinder lock according to claims 1 to 3 d a -d u right that the transmission of the rotating and sliding movement of the first part-cylinder and the rotary movement of the second (and further) part-cylinder via levers that are firmly connected to the partial cylinders and through Slots in the cylinder housing are led to the outside for the actuation of further Construction parts outside the cylinder housing can be used. 5. Security cylinder lock according to the preceding claims d a d u r c h g e k e n n n z e i c h n e t that for the iLOCK key with different Long can be used and thus the number of processes to be triggered is limited and a copy of the master key can be avoided.