EP1242705B1 - Tool for releasing a locking cylinder - Google Patents

Abstract

A tool for unlocking a locking cylinder, with a tumbler consisting of a plurality of spring-loaded locking bodes that can be displaced crosswise to the rotational axis of the locking cylinder. The tool comprises a rotating part ( 1 ) provided with two driver noses ( 10 ) on its cylinder side end, which can be inserted into the keyway. The tool furthermore comprises a sliding part ( 4 ) that is positioned such that it is connected form-locking to the rotating part 91 ) in the rotating direction and axially movable in the axial direction and has a flat sensing element ( 6 ) on the cylinder-side end that can be inserted into the keyway. The cross-sectional profile of the sensing element corresponds at least in some sections to the cross-sectional profile of the keyway, wherein at least one sensing body ( 9 ) for displacing the locking body inside the locking cylinder is assigned to the sensing element.

Description

Doors on buildings, but especially doors on motor vehicles are equipped with security locks today, d. H. the locks have so-called lock cylinders, one Actuation of the locking bolt only with the help of special Allow keys. To gain access to an emergency To create space, the door with such a security lock provided, this was previously only under destruction the lock, for example by pulling it violently the locking cylinder possible with the help of a pull-out device, as known from DE-U-87 08 961.0 and DE-U-87 16 770 is. Depending on the quality of the lock, there is a corresponding one Time required. But the castle always becomes destroyed so that a new lock cylinder can be used got to. Since both in apartments and in motor vehicles all locks designed as a so-called locking system are, d. H. that with at least one key all Locks that can be actuated usually have to Destruction of one locking cylinder affects the other locking cylinders can also be replaced.

For non-destructive unlocking of locks with locking cylinders, which are provided with pin tumblers are so-called Known picker. With these, one with protrusions provided steel lamella in the key channel and with simultaneous application of a torque by tried with additional lever tool in the opening direction With the help of this slat the individual pins against the force of one Return spring with its free ends in the closing level to press and the lever tool in this position hold until all pins are positioned in the open position are and the locking cylinder is rotated via the lever tool can be. This way of working is also very time-consuming and practically only leads to locks that have long been in Are use and the tumbler a corresponding Show wear, to success.

So-called electropickers are also known, in which one Slat is inserted into the key channel, which is via a electromotive drive in the level of the key channel is moved back and forth at high frequency so that with simultaneous application of a torque to the Lock cylinder in the opening direction, like a hand-held one Picker, the tumbler pins in through the cylinder circumference defined opening level should be spent. This The device is only partially non-destructive because of the hitting steel lamella the key channel is damaged. Both the handheld picker and the electric picker are not suitable for so-called track keys for Lock cylinder with tumblers in the form of disks individually against the force of a return spring across Cylinder axis can be moved in their open position have to.

Such an expenditure of time is not justifiable in emergencies, for example, when you are parked in the blazing sun locked motor vehicle a child or an animal located. The same problem occurs particularly with modern ones Motor vehicles with an automatic locking system are provided, which is set so that within a the given time automatically locks the doors that are only closed if the user should have forgotten to operate the locking device. Has the user in one in such a case accidentally the vehicle key in the car Leave it there, then there is only violent access destroying the lock cylinder or the time consuming access via a picker possible.

DE 198 22 079 C discloses a locking device for locking cylinders known in the case of a fixed holding tube with an axial groove a tubular rotating body with an axial Slot is arranged. The tumbler is shaped like a rod loose locking body formed in the groove and the Slot is stored. In the rotating body are close together circular support disks arranged with their Edge the rod-shaped locking body in the groove of the fixed one Holding the holding tube and the slot of the rotating body, that these are positively locked together. The Support disks have a rectangular center recess, a key channel in the sequence of the support disks form. The support disks also have different Allocation to the respective center recesses an edge recess on. If the center recesses are aligned the edge recesses are not in a row and the Locking body is held in its locked position. It is only possible to use the correct key to the support disks simultaneously relative to each other and different to twist so that the edge recesses in line positioned one behind the other and under the slot of the rotating body become. The locking body is then from the slot in the rotating body and the edge recesses of the support disks with his Cross section fully included and the interlock between fixed support tube and the rotating body, so that with a locking lug for the lock mechanism provided rotating body can be turned using the key can.

While using a proper key through corresponding "coded" approaches the orientation of the Edge recesses of the support disks in line already when inserted of the key must be in the known unlocking device a longitudinally displaceable in a holding means and rotatably mounted wire hook inserted into the key channel become. With the help of the hook, each support disc must now individually twisted with feeling and the assignment to the locking rod be felt. By markings on the device are the thicknesses of the support disks forming a "stack" specified to ensure that the hook only ever a support disc is rotated. One disadvantage is that the hook is not in the key channel and at the small wire diameter a bending and / or twisting cannot be avoided. With a built-in microphone in the The entry area of the hook is intended to support the scanning process be so, even minor, due to manufacturing tolerances to detect unavoidable movements of the locking bar, when the edge recess is positioned under the slot of the rotating body is.

Such a tool is used as an unlocking aid for locking cylinders with locking bodies that can be moved transversely to its axis of rotation not applicable at all.

The invention has for its object a tool for to create non-destructive unlocking of a locking cylinder that as tumblers a variety of spring-loaded, Locking body displaceable transversely to the axis of rotation of the locking cylinder having. By the tool according to the invention the disadvantages described above are avoided and unlocking one with such a lock cylinder provided lock reliably and with little effort become.

This task is solved by an unlocking tool a locking cylinder with the features of claim 1. The Advantage of the tool according to the invention is that the probe element by its to the cross-sectional contour of the Key channel adapted cross-sectional contour practically like a key is guided in the key channel, so that at one Movement of the probe body in the axial direction of the locking cylinder the locking body transversely against the force of the return spring in their neutral position, d. H. with their free ends in brought the circumferential plane of the rotatable part of the lock cylinder can be. Because of the turned part on the lock cylinder a torque in the opening direction or in When the closing direction is applied, the individual tumblers fixed in this position so that after complete Pull the probe element through the turned part of the Lock cylinder turned and the lock opened or closed can be. This makes it possible, for example, a child or dog from a parked motor vehicle free and then lock the motor vehicle again.

In an embodiment of the invention it is provided that the probe body the locking element in the direction of movement of the opening lock cylinder extends. The amount of effective part of the probe corresponds to the height of the locking body of the opening cylinder with the maximum lifting height.

In an embodiment of the invention it is provided that the probe body is arranged at the free end of the probe element. This allows the probe element to be completely in the Insert the key channel, then the rotary part apply the required torque and then sensitively withdraw the feeler element via the slide part, if necessary under multiple short-stroke back and forth pushing from the Pull out the key channel and in doing so the locking body position in their open position.

Depending on the design of the lock cylinder can be in one embodiment the probe body is rigidly connected to the probe element be as appropriate for example for railway keys is.

In another embodiment it is provided that the probe body transverse to the sliding direction of the probe element and in the direction of movement the locking body is movably supported and over a support spring is supported. Such a configuration is suitable for locking cylinders with so-called pin tumblers. The spring stiffness of the support spring must be somewhat be greater than the usual spring stiffness of the return springs the pin-shaped locking body.

In another embodiment of the invention, that the probe body by a profiled resilient wire element is formed, which is axially displaceable on the slide part is led. In this embodiment, the probe element remains in the key channel and also serves as a turned part, while the sliding movement only over the Wire element takes place. The probe body can in this embodiment formed by bending the wire at the end his. The probe body made of wire largely leaves run supported in the probe element.

in an expedient embodiment of the invention, that the probe element is detachably connected to the slide part is. This makes it possible to customize with one set Lock cylinder pushbuttons with a wide variety Unlock cross-sectional contours of the key channel.

It is also useful if the touch element with play with Slider part is connected. This results in a certain Decoupling between the rotating part to be regarded as a unit and slide part, so that by applying the torque no constraints on the hand-guided turned part the feeler element can be exercised and this therefore without constraint and in a way self-adjusting in the key channel can be performed. The advantage here is that the probe element due to its adapted to the key channel Cross-sectional contour practically guided like a key is. In the same way, it is useful if the slide part on the rotating part by a small amount around the axis of rotation of the Rotatable part is pivotable. Otherwise, the probe element however positively connected to the slide part.

Further refinements of the invention are from the subclaims and the embodiment described below refer to.

Fig. 1

eine erste Ausführungsform eines Werkzeuges zum Entsperren eines Schließzylinders, teilweise im Schnitt,

Fig. 2

eine abgewandelte Ausführungsform für ein Tastelement,

Fig. 3

einen Schnitt gem. der Linie III-III in Fig. 3 durch das Tastelement,

Fig. 4

eine weitere Ausführungsform für ein Tastelement,

Fig. 5

eine Ausführungsform mit Drehkrafterzeuger, teilweise im Längsschnitt,

Fig. 6

eine Stirnansicht in Richtung des Pfeiles A in Fig. 5.

The invention is described in more detail using exemplary embodiments. Show it:

Fig. 1

1 a first embodiment of a tool for unlocking a locking cylinder, partly in section,

Fig. 2

a modified embodiment for a probe element,

Fig. 3

a cut acc. the line III-III in Fig. 3 by the probe element,

Fig. 4

another embodiment for a probe element,

Fig. 5

an embodiment with torque generator, partly in longitudinal section,

Fig. 6

an end view in the direction of arrow A in Fig. 5th

The tool shown in Fig. 1 for unlocking a Lock cylinder has a rotating part 1, which is essentially from a tubular extension 2 with an end grip element 3 exists. In the tubular extension 2 is a slide part 4 guided longitudinally, on its cylinder-side End 5 is connected to a sensing element 6. The probe element has a cross-sectional contour that at least over a portion of the cross-sectional contour of the key channel of the locking cylinder to be unlocked. In which The exemplary embodiment shown here is the touch element 6 trained so that lock cylinder for web key with Disc tumblers can be unlocked. The Touch element 6 is here on its two flat sides with a groove-shaped cutout 7 provided on the two Narrow sides are limited by webs 8. The height a corresponds about the height of the associated key, the Dikke corresponds approximately to the feeler element in the area of the webs 8 the thickness of the key.

At its free end, the sensing element 6 is triangular Probe bodies 9 provided with respect to the thickness of the Tactile element are arranged offset from each other and their effective height b - measured from one long side - corresponds to the height of the locking element with the maximum lifting height.

The tubular extension 2 has at its cylinder end two in the key channel of the locking cylinder to be unlocked insertable driver lugs 10, the thickness of which is approximately corresponds to the thickness of the sensing element 6.

To unlock the approach with withdrawn button 6 with its two driver lugs 10 and the feeler element 6 by moving the slide part 4 in the direction of the arrow 11 inserted into the key channel. Then will About the handle part 3 and the driver lugs 10 on the Lock cylinder of the still locked by its locking elements Lock cylinder applied a torque by hand, so that the locking cylinder against the locking locking elements is pressed in the locking cylinder. Then the slide part 4 slowly withdrawn, so that the individual locking elements of the locking cylinder one after the other in their neutral Position can be moved so that after complete retraction the key element of the locking cylinder is fully unlocked is so that while maintaining the torque about the handle part 3 of the locking cylinder in the opening direction rotated and the associated door can be opened.

With locking cylinders with pin tumblers, it is advisable to if according to the representation acc. Fig. 2 the probe element 6.1 over part of its height, namely that of the tumblers turned away edge of its height, partly the cross-sectional contour of the key channel. In this embodiment is a probe body at the free end of the probe element 6 9.1 arranged, which is designed in the form of a spring steel bracket is, which is relatively displaceable at least at one end Touch element 6.1 is stored. This spring steel bracket is included its spring hardness adjusted so that its compliance is less than the resilience of the springs supported Tumblers. The method of operation is the same as described with reference to FIG. 1.

Fig. 3 shows schematically in a section acc. the line III-III in Fig. 2 shows an exemplary cross section through the Probe element and shows that it is with its cross section is adapted to a cross section of a key channel. For different key channel shapes must be adapted accordingly Touch elements are used.

Instead of a resilient bracket, as shown in Fig. 2 and described, the probe body 9.1 can also be relative to the probe element Slidable, spring-supported probe body be used.

Fig. 4 shows a modified embodiment of Fig. 2, at the on a probe element 6.2, for example, a cross-sectional contour 3, as shown in FIG. a wire element is mounted for longitudinal displacement, which in turn is shaped like a probe at its end like a bow. at In this embodiment, the probe element can be used directly be connected to a grip element, which together with the wire element 9.2 is introduced into the key channel and in this is subjected to a torque. Then it will Wire element 9.2 slowly withdrawn, so that after a unlocking moving the tumbler pins over the bow-like shaped probe body 9.2 using the probe element 6.2 the now unlocked locking cylinder in the open position of the associated lock can be rotated.

As can be seen from FIG. 1, it is useful if the tool with interchangeable probe elements 6 is, for example, via a screw 12 with the slide part 4 can be connected. The connection is expedient designed so that between the sensing element 6 and the Slider part 4 is a certain game, which is low Pivotal movement about the axis of the screw 12 and transversely guaranteed to so the sensing element 6 against the Slider part 4 to give a certain mobility. The Slider part 4 is mounted in the rotating part 1 so that it is not is only longitudinally displaceable in the direction of arrow 11, but there is also some play in the direction of rotation of the rotating part 1 is, here too, constraints between the probe element 6 and the slide part or the rotating part to be avoided. Furthermore are rotating part 1 and slide part 4 form-fitting with each other connected.

The expediently also with a grip element 13 provided slide part 4 can now be designed so that an electrical drive element with supply, for example can be connected via a battery that has a periodic Back and forth movement of the sensing element 6 with little Hub generates and at the same time pulling out the slide part 4 together with the reciprocating probe 6 enables.

In Fig. 5 the embodiment is gem. Fig. 1 shown in an "upgrade" according to the invention with a torque generator 13, which has a releasable lock 14 with the Rotating part 2 is connectable. The torque generator 13 is in the essentially formed by a handling part 15 in which the rotating part 2 is rotatably supported. Handling part 15 and Rotating part 2 are via a spring element 16, for example a Clock spring connected together.

The latch 14, shown only schematically, has a Handling part 15 stored locking element 17, which on Head 3.1 of the rotating part 2 several notches 18.0, 18.1 and 18.2 are assigned (Fig. 6). In the locked position with the catch 18.0, the spring element 16 is untensioned. The tool can be handled via the holding element 15, as for the embodiment acc. Fig. 1 described. For the practical Implementation, it is useful if the locking element 17th twisted on the handling part 15 is arranged so that a unintended triggering of the torque amplifier during a Actuation of the pushbutton is not possible. This can for example by axially acting, only from the front forth actuatable locking elements are realized, the Notches 18 are to be adjusted accordingly.

For locking cylinders with particularly smooth-running locking bodies however, the one that can be achieved by manual actuation is sufficient Rotation speed does not turn out after adjusting the Locking body the locking cylinder in the opening or closing direction to twist because even with minor changes in the torque applied by hand the locking body itself the effect of their return springs back into the locked position move back.

Depending on the desired direction of rotation (opening or closing) is now before attaching the tool to the lock cylinder the spring element 16 by rotating the handling part 15 biased against the rotating part 2 and in the by Notches 18.1 or 18.2 are locked in the predetermined end position, see above that the torque generator 13 is biased. The lock with the detent 18.1 causes a bias to generate a torque in the opening direction and locking with the detent 18.2 corresponding to a torque in the closing direction.

The angular position of the catches 18.1 and 18.2 with respect to the Detent 18.0, which is 90 degrees here, can vary depending on requirements be chosen differently. It can also be useful be, for each direction of rotation several notches 18.1 or 18.2 in to provide different angular positions to the catch 18.0, by different turning paths on the locking cylinder to be opened to be able to muster.

The tool is again, as described with reference to FIG. 1, handled to adjust the locking body of the lock cylinder. About the handling part 15 and the nose 10 am Rotary body 2, the necessary "clamping force" is applied to the individual locking bodies in their through the feeler 9th adjusted open position held. Once all locking bodies are in the open position, the lock 14 solved so that the rotating part 2 in the by Preload of the spring element 16 predetermined direction of rotation rotates and thereby inserted into the key channel Noses 10 with high rotational speed, practically suddenly twisted. The cross section of this can be the corresponding one Key corresponding touch element also completely in the key channel be inserted and the rotary movement unhterstützen. The handling part 15 must be done by hand held and if necessary by an additional support on the the door to be opened cannot be rotated, for this purpose usually a hand support on a door handle is sufficient the door to be opened.

Claims (15)

1. Tool for unlocking a lock cylinder which comprises, as tumbler, a plurality of spring-loaded locking bodies which can be displaced transversely to the axis of rotation of the lock cylinder, with a rotational part (1) which is provided at its cylinder-side end with two catch lugs which can be introduced into the key channel, characterised in that a slide part (4) is provided at the rotational part (1), which slide part is mounted in a positive-locking fashion in the rotational direction and so as to be axially mobile in the axial direction and is provided at its cylinder-side end with a flat probe element (6) which can be introduced into the key channel and the cross-sectional contour of which corresponds to the cross-sectional contour of the key channel, at least over a subregion, and with which at least one probe body (9) is associated for displacing the locking bodies in the lock cylinder.
2. Tool according to Claim 1, characterised in that the probe body (9) is disposed at the free end of the probe element (6).
3. Tool according to Claim 1 or 2, characterised in that the probe body (9) is rigidly connected to the probe element (6).
4. Tool according to Claim 1 or 2, characterised in that the probe body (9.1) is mounted so as to be mobile transversely to the sliding direction (11) at the probe element (6) and is supported via a support spring.
5. Tool according to Claim 1, characterised in that the probe body (9.1) is formed by a profiled, resilient probe element (9.2) which is guided in an axially displaceable fashion at the probe element (6.2).
6. Tool according to any one of Claims 1 to 5, characterised in that the probe element (6) is connected to the slide part (4) such that it can be released.
7. Tool according to any one of Claims 1 to 6, characterised in that the probe element (6) is connected with play to the slide part (4).
8. Tool according to any one of Claims 1 to 7, characterised in that the slide part (4) can be pivoted at the rotational part (1) by a slight degree about the axis of rotation of the rotational part (1).
9. Tool according to any one of Claims 1 to 8, characterised in that the slide part (4) is guided in an axially displaceable fashion in a tubular attachment (2) at the rotational part (1).
10. Tool according to any one of Claims 1 to 9, characterised in that the catch lugs (10) are disposed at the free end of the tubular attachment (2).
11. Tool according to any one of Claims 1 to 10, characterised in that the rotational part (1) is connected to a handle element (3) at its end which is remote from the catch lugs (10).
12. Tool according to any one of Claims 1 to 11, characterised in that the probe element (6) is mounted such that it can reciprocate in the slide part (4) and is connected to a drive element for producing a periodic reciprocating movement.
13. Tool according to any one of Claims 1 to 12, characterised in that a handling part (15) is provided, at which part the rotational part (2) is rotatably mounted and can be secured thereto in a non-rotatable fashion by a releasable interlocking mechanism (14), and that a spring element (16), which can be preloaded between the handling part (15) and the rotational part (2), is provided for producing a rotational force acting between the handling part (15) and the rotational part (2).
14. Tool according to any one of Claims 1 to 13, characterised in that the spring element (16) can be preloaded with respect to both rotational directions of the rotational part (2).
15. Tool according to any one of Claims 1 to 14, characterised in that the spring element (16) is formed as a spiral spring.

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