DE102005001085A1 - High security cylinder lock design, has core pins with free stroke limited by e.g. stop pin projecting at right angles into core pin bore - Google Patents

Abstract

The free stroke of at least one of the pins (2) in the core bore (or alternatively in the casing bore), is limited. A stop pin (3) in the core, projects into the core pin bore, to arrest the core pin, hence limiting its travel. The stop pin is directed at right angles to the bore. Core pin(s) and their associated bores have a cross-sectional shape other than circular. Pin(s) may include studs at right angles to their length. Core or casing pin(s) may have a threaded- or screw-like outer contour, with a complementary contour in the cylinder or core casing. The threaded or screw-like outer contour engages a contact pin in the cylinder casing.

Description

The The invention relates to a lock cylinder, consisting from a cylinder housing and a rotatably mounted in this cylinder core and in the cylinder housing like in the cylinder core in corresponding holes resiliently mounted housing or Kerstiften, which by an imported matching key in a releasing the separation plane between the cylinder housing and cylinder core Position can be brought.

For the unauthorized opening of Locks are used different methods. One of these methods is the so-called Stroke technique. It uses a key blank that with the maximum closing values notched. This blank will then be in with a short punch the key channel driven. As a result, all core pins receive an impulse on the associated housing pins and transmit their feathers. Reached will then be a very short - term separation of the respective core pin of its associated housing pin. If now at exactly this moment the separation of the cylinder core with the key is rotated, so can - under Great Circumstances - a closure will be carried out.

A similar Method is used in "picking", where here the necessary impulses through one into the key channel introduced Spring tongue is achieved.

task The invention is to prevent this type of unauthorized opening attempts.

Reached This is inventively in a Lock cylinder, consisting of a cylinder housing and a rotatably mounted in this cylinder core and in the cylinder housing like in the cylinder core in corresponding bores spring-mounted housing or Core pins inserted through an inserted matching key in a releasing the parting plane between the cylinder housing and cylinder core Position can be brought, characterized in that the free stroke at least one of the housing or core pins within the associated bore is limited.

When Lifting motion here is the axial mobility of the core pin in understood him receiving bore of the cylinder core.

Of the depending on the applied method occurring pulse can not act more on all core pins, i. at least one of the pens locks together with the associated housing pin the parting plane between cylinder housing and cylinder core, so no rotation of the cylinder core and thus carrying a closing process possible is.

to Stroke limit can be in the cylinder core a projecting into the core pin hole Stop pin, which is aligned perpendicular to the bore, for the core pin be provided.

at another embodiment has at least one of the core pins and the associated hole a deviating from the circular cross-sectional plane cross-sectional shape on.

This can be achieved by having the different cross-sectional shape through one over the circular cross-sectional plane of the core pin protruding cams is illustrated, with a stop in the associated hole the core pin cooperates.

To a werteren embodiment of the invention may be at least one the core or housing pins have a threaded or helical outer contour, the one associated with corresponding counter contour in the bore in the cylinder or core housing is.

The Invention will be explained below with reference to the drawings.

there shows:

1 a schematic representation of the embodiment according to claim 2 and 3,

2a f corresponding representations for the variant according to claim 4 and 5 and

3a d an embodiment of the possibility according to claim 6.

In the 1 is for simplicity only the cylinder core 1 shown and one of the core pins 2 , These designations also apply to the other graphic representations.

It is evident that the lifting movement of the core pin 2 through a stop pin projecting into the bore 3 is limited.

In the second embodiment, this Hubbegrenzung is achieved in that the core pin 2 has a deviating from the usual circular cross-sectional plane shape, here by a projecting cam 4 is reached.

This can be engaged with a correspondingly shaped stop 5 come in the bore assigned to the core pin, so that in this way the stroke of this core pin is limited.

In the third embodiment is in the cylinder housing 6 a stylus 8th provided and the single housing pin 9 has a helical recess on the circumference 7 on that with the stylus 8th is engaged, so that on this pin no "shock pulse" can be transmitted.

Claims (7)

Lock cylinder, consisting of a cylinder housing ( 6 ) and in this rotatably mounted cylinder core ( 1 ) and in the cylinder housing as in the cylinder core in corresponding bores spring-mounted housing or core pins ( 2 ; 9 ), which can be brought by an introduced matching key in a parting plane between the cylinder housing and cylinder core releasing position, characterized in that the free lifting movement of at least one of the housing or core pins ( 2 ; 9 ) is limited within the associated bore. Lock cylinder according to claim 1, characterized in that for the stroke limitation in the cylinder core a projecting into the core pin hole stop pin ( 3 ) for the core pin ( 2 ) is provided. Lock cylinder according to claim 2, characterized in that the stop pin ( 3 ) is aligned perpendicular to the bore. Lock cylinder according to claim 1, characterized in that at least one of the core pins ( 2 ) and the associated bore have a deviating from the circular cross-sectional plane cross-sectional shape. Lock cylinder according to claim 4, characterized in that the deviating cross-sectional shape through a via the circular cross-sectional plane of the core pin ( 2 ) protruding cam ( 4 ) formed with a stop ( 5 ) cooperates in the associated bore of the core pin. Lock cylinder according to claim 1, characterized in that at least one of the core or housing pins a threaded or screw-like outer contour ( 7 ), which is associated with a corresponding mating contour in the bore in the cylinder or core housing. Lock cylinder according to claim 6, characterized in that the thread or screw-like outer contour ( 7 ) with a in the cylinder housing ( 6 ) arranged stylus ( 9 ) is engaged.