EP0313864B1 - Cylinder lock with tumbler pins - Google Patents

Abstract

The invention relates to a lock cylinder with pin tumblers having an increased degree of break-in protection, better relocking safety, more locking variations, more difficult key copying and an improved step jump.

Description

The invention relates to a lock cylinder with pin tumblers with a cylinder housing in which a core with a circular cross section with a longitudinal rib profile is rotatably mounted in the key channel for a longitudinal rib profile flat key with incisions provided on the narrow side, and with pin pairs which are arranged one behind the other in the longitudinal direction of the core and each consist of a housing pin and a core pin , wherein the housing pins are spring-loaded, and wherein the pairs of core and housing pins are controllable from the key narrow side, and moreover with at least one radially arranged key-wide controlled tumbler, which is arranged at an angle to the pins controlled by the key narrow side and which consists of one Core pin and a housing pin with spring element, with the longitudinal rib profile flat key back tangent to the core surface and wherein the cylinder core after a unauthorized key tumbler adjustment and an initial rotation can be blocked automatically by engaging the housing pin in an insufficiently bridged core hole.

A lock cylinder with tumblers according to the prerequisite type is previously known from DE-OS 20 03 059. This type of construction is relatively space-consuming.

Another disadvantage is that this locking cylinder can be opened relatively easily by unauthorized persons. In particular, no measures against the Hobbian opening procedure are recognizable.

From DE-PS 30 32 203 a lock cylinder with reversible flat key without incisions is known, which also builds relatively large.

From DE-OS 36 09 473 a lock cylinder is known, which works relatively expensive with pins and ratchets in the cylinder core. This results in a core of relatively large outer diameter, which is primarily based on Hahn profiles.

From DE-AS 12 60 340 a rotary cylinder lock with a cock profile is previously known, in which on both sides of the key channel gravitationally movable locking members are provided which are able to dive into recesses in the narrow sides of the key under the influence of gravity. The owner of this DE-AS describes in DE-OS 20 03 059 itself (p. 2, last paragraph) that the locking pins only attempt to slip into their lowest position in the pin channel by gravity. However, the oblique arrangement of the pin cylinder channels has disadvantages. These disadvantages were based on the fact that offset forces could occur between the locking pins and the flat key, the greater the more acute the angle between the flat key plane and the locking pins. This phenomenon is due to the fact that the force applied in the direction of the key slot for inserting or removing the flat key is deflected in part by the edge surfaces through the side depressions and the adapted ends of the locking pins in a direction that is perpendicular to the key slot plane. The force component thus created causes the displacement of the Locking pins in the pin channel. The greater the angle between this force component and the pin channel in question, the less it is used.

A locking cylinder with pin tumblers and flat keys is known from AT-A-357 429, the two flat sides of the key being assigned two rows of tumblers running in the axial direction of the core, of which at least one row of tumblers each lies in a plane that is effective with respect to the associated one Side surface of the inserted flat key is inclined, and the key is provided on its two flat sides with two rows of recesses for the associated side locking rows. At least one of the two narrow sides of the flat key is assigned to at least one row of two-part edge tumblers running in the axial direction of the core, each consisting of a tumbler pin and counter-tumbler, the flat key having at least one row in the longitudinal direction of the key for the edge tumblers on at least one narrow side. The key channel of the lock, delimited by the core, is designed like a window, with each of the two narrow sides of the flat key one row of edge locks is assigned. The flat key is provided on each narrow side with a series of depressions for the tumblers of the associated series of edge tumblers. The tumblers of the two rows of edge tumblers each lie in a common tumbler plane, the two planes coinciding with the longitudinal center plane of the inserted flat key, the center planes of the depressions of the two rows of depressions for the edge tumblers coinciding with the longitudinal center plane of the flat key on the flat key. The narrow side of the flat key is assigned two rows of edge tumblers, the tumblers of these two rows lying in two tumbler levels, which are inclined in opposite directions with respect to the longitudinal center planes of the inserted flat key which run in the longitudinal direction of the key cross section, the flat key on the narrow side in question having two rows of depressions for the tumblers are each provided with one of the two rows of edge tumblers and the central planes of the depressions in these two rows of depressions corresponding to the inclination of the tumbler planes in the longitudinal direction of the key two rows of tumbler are inclined in rows in opposite directions with respect to the longitudinal center plane of the flat key.

Locks according to AT-A-357 429 are also referred to as lock cylinders with reversible keys. Such a "reversible key" has two backs. In addition, such a reversible key has no incisions, i.e. no depth variations. However, with a reversible key, blind holes can be provided on a narrow side, which are only a few tenths of a millimeter deep. The possibility of variation is accordingly relatively small. In a cylinder lock with reversible key according to AT-A-357 429, only fifty percent of the recesses are used for the specific application, since a reversible key has to be inserted (rotated) by one hundred and eighty degrees into the key channel. Therefore, the holes are always the same, i.e. depending on the insertion of the key, one row of holes or the other row of holes is used. The opposite row of holes is not used and therefore does not contribute to increasing locking security.

In contrast to a longitudinal rib profile flat key, a reversible key is guided on the outer surfaces. The reversible key is therefore supported on its sides. It can therefore be easily reworked.

A longitudinal rib profile flat key must be clamped in the profile and reworked so that it fits at all.

DE-A 15 53 529 shows a lock cylinder with pin tumblers with a cylinder housing in which a core with a circular cross-section with a longitudinal rib profile is rotatably mounted in the key channel for a longitudinal rib profile flat key with variable incisions provided on the narrow side, and with each lying one behind the other in the longitudinal direction of the core a housing pin and a core pin consisting of pairs of pins, the housing pins being spring-loaded, and wherein the pairs of core and housing pins can be controlled from the key narrow side, and moreover with at least one radially arranged key-side controlled tumbler, which is at an angle to that of the key narrow side Controlled pins is arranged and which consists of a core pin and a There is a housing pin with a spring element, whereby the longitudinal rib profile flat key back touches the core surface and the cylinder core can be blocked automatically by an intervention in the housing pin after an unauthorized key tumbler adjustment and an initial rotation into an insufficiently bridged core hole. The locking security is not satisfactory with this locking cylinder. Duplicate keys can be manufactured with relatively large profile tolerances, since the key is supported and guided on the back of the key. Such a locking cylinder can be opened relatively easily by unauthorized persons.

The invention has for its object to provide a pin cylinder lock according to the preamble of claim 1 with increased lock-out security (degree of complication of a cylinder lock non-violent to operate without a key and without knowledge of the original key with suitable tools). Furthermore, the burglar resistance should be significantly increased. This is understood as the degree of difficulty in overcoming a pin cylinder lock. In addition, the security against locking is to be increased, which means the degree of aggravation with a different one than that to lock certain keys. The lock variations should also be increased, which means the number of different locks per profile. In addition, the ability to copy keys should also be made more difficult, which is understood to mean making a key copy without an original key present. Finally, the step change should be improved. This is understood to mean the smallest difference in length by which the pin cylinder provided stages of the pin tumbler and the key incisions / countersinks differ from each other. These should be set so that if several holes are arranged in rows in the cylinder housing with spring-loaded housing pins, the correct key can only be removed when the core is turned only in the inserted position, or if the original key has not been used, the cylinder core locked after a successful rotation of approx. 45 degrees or 90 degrees or 180 degrees or 270 degrees or 315 degrees and then the wrong key can no longer be removed from the key channel. In addition, a locking cylinder aimed at in accordance with the invention should be able to be constructed with small dimensions.

Starting from a lock cylinder of the required type, this object is achieved by the characterizing features of patent claim 1 .

Characterized in that, seen over the circumference of the housing at a certain angular distance from the core pins in the housing bores in which housing pins are longitudinally displaceable against the restoring force of tumbler springs as compression springs, which are arranged in such a way that they are in the direction of the compression spring in question If the surface of the core is loaded, a "cylinder lock" according to the invention initially has "baffles" that are not recognizable from the outside. After an unauthorized opening of the locking mechanism for the cylinder core and after a certain rotation, these formally snap into the coordinated cylinder core pin holes or into the blind holes assigned to the key back for housing pins in the cylinder core, so that these locks would have to be overcome again in order to be able to turn the core further . In this way, a pin tumbler lock according to the invention with several such additional "baffles", seen over the circumference z. B. three or more "baffles", equip all of which would have to be overcome before the core can be rotated through 360 degrees. In addition, these "chicanes" can also be arranged many times in the axial direction.

Here, the actual castle, for. B. a push rod lock, opened a little, but not yet unlocked.

Furthermore, a pin tumbler lock according to the invention is provided with at least two or many pairs of so-called core pins, which are displaceably arranged in bores in the housing, likewise against the restoring force of compression springs, which also load the core pins in the direction of the core. At certain angular positions of the core, the bores arranged in the housing are aligned with bores arranged therein, which run at the same angle, the longitudinal axes of the bores for the core pins intersecting on the core longitudinal line. In this way it is possible to use core pins which are circular in cross section and also housing pins. Due to the recesses arranged in the flat sides of the profile key at certain angular positions, which are of different depths can, the drilling pattern is relatively complicated and the key copy difficult.

• 1. Das Längsprofil des Schlüssels muß in den Schlüsselkanal einführbar sein.
• 2. Die Kernstifte müssen mit den unter einem gewissen Winkel stehenden Einformungen bzw. Vertiefungen im Schlüsselprofil korrespondieren, damit die kernstifte in den Schlüssel sozusagen seitlich eintauchen können.
• 3. Die Kernstifte müssen zu den Schlüsseleinschnitten passen, wobei die Kernstifte und die Schlüsseleinschnitte einen so großen Hub erlauben, daß man auch Pilzstifte einsetzen kann.
• 4. Des weiteren muß der Schlüsselrücken den bzw. die dort vorgesehenen Gehäusestifte in ihre Entriegelungsstellung bringen.
• 5. Des weiteren muß die Schlüsselspitze beidseitig Einformwinkel- und tiefen aufweisen, die es ermöglichen, daß auch der tiefste Kernstift aus seiner Sperrlage geschoben werden kann.

So that a pin cylinder lock according to the invention can be opened properly, at least five conditions must be met.

• 1. The longitudinal profile of the key must be insertable into the key channel.
• 2. The core pins must correspond to the indentations or depressions in the key profile, which are at a certain angle, so that the core pins can dip into the key, so to speak, laterally.
• 3. The core pins must match the key cuts, the core pins and the key cuts allowing such a large stroke that mushroom pins can also be used.
• 4. Furthermore, the back of the key must bring the housing pin (s) provided there into their unlocked position.
• 5. Furthermore, the key tip must have forming angles and depths on both sides, which enable the deepest core pin to be pushed out of its locked position.

If these conditions are met, you can insert the key into the key channel and twist the cylinder core. Only then is there an original key that matches the pen cylinder. If one of the prerequisites deviates, it is not an original key that matches the pin cylinder lock.

A lock cylinder according to the invention with pin tumblers is also extremely compact compared to the prior art, since the outer diameter of the core can only be approximately 8.5 mm to 10 mm or less, which means that a lock cylinder according to the invention can be used in a variety of ways for all possible dimensions and lock cylinder types . If an unauthorized person wanted to move the housing pins over the core pins against the restoring force of the tumbler springs without a suitable key, he would actually need a burglary tool in the form of a Use sheet metal strip that is infinitely thin. This infinitely thin intrusion tool should not only be able to follow the contours of the paracentric profile, but one should also be able to transmit torsional forces via this infinitely thin intrusion tool in order to generate a core twist. However, this is practically impossible. In the normal position, the housing pins lock the core against the housing. If the overlapping core pin tips were to be axially displaced by a certain amount, the housing pins would be removed from the locking contact, but as soon as the housing pins were moved out of their locking positions, the rear ends of the core pins would result in the core being locked again with respect to the housing occur and thus a rotation of the core relative to the housing again be impossible. This presupposes that, in the case of the core pins arranged paracentrically to one another, the tips of the core pins in the open state touch the profile axis which is orthogonal to the longitudinal axis of the core. Paracentric is understood to mean the following: in the case of locking cylinders which are actuated by keys with incisions, the key channel and key profile must be designed such that the profile line is the profile axis of both Pages overlap or touch at least twice (paracentric key profile), but at least once in the scanning area of the core pins. In the lock according to the invention, the core pins, if they are arranged opposite one another, can at most touch. If, on the other hand, the core pins lie one behind the other in different cross-sectional planes, they can also overlap.

In claim 2 , a preferred embodiment of the invention is described. The outer diameter of the core is only 10 mm.

Another advantageous embodiment is described in claim 3 , in which the outer diameter of the housing is only 23 mm.

In the case of a pin cylinder lock with an oval housing or with a housing of a rectangular basic shape with a rounded design on the narrow sides, the dimensions can be 13 x 24 mm, even in this Case the outer diameter of the core z. B. is only 10 mm. Such a castle is also extremely compact. The invention (object and solution) can also be used advantageously in a rooster profile cylinder ( claim 4 ).

In the embodiment according to claim 5 , cylindrical housing pins and so-called mushroom pins can be used mixed.

If an embodiment according to claim 6 is used, several further housing pins are arranged in pairs on the diametrically opposite sides.

In the embodiment according to claim 7 , the longitudinal axes of a pair of core profile pins each form an angle of 90 degrees with one another, the axis running through the key channel representing the bisector to the longitudinal center axes of the bores of the core profile pins.

A preferred embodiment is described in claim 8 . This is a fully mechanical production of the holes for the housing holes. This can be done on automatic machines with high performance, whereby two diametrically opposed holes can be drilled through the hole in the cylinder core in one operation. One side of the holes intended for the housing pins is designed as a blind hole, while other holes are later closed, for example riveted.

Another particularly advantageous embodiment is described in claim 9 . With this, all holes can first be made, then the holes intended for them riveted and the housing ground and then refined, while only then is the assembly of the housing pins and springs through the core hole from the inside. From the outside of a pin cylinder lock manufactured in this way, the large number of holes can no longer be recognized. In addition, as in the prior art, a sleeve is not required which would have to surround the housing in order to carry out the assembly, in order to hold the tumbler springs etc. together.

Fig.1

einen Querschnitt durch ein Stiftzylinderschloß gemäß der Erfindung, wobei links von der vertikalen Mittellinie die tiefste Stelle von Kern- und Pilzstiften dargestellt ist, und zwar ohne Schlüssel im Schlüsselkanal, während rechts von dieser Mittellinie die höchste Stelle der Pilz- und Kernstifte, also durch den Schlüssel angehoben, veranschaulicht wurde, wobei der Schlüssel voll dargestellt worden ist, ohne Rücksichtnahme auf die sich in Verriegelung oder außer Verriegelung befindlichen Gehäuse-, Kern- und Kernprofilstifte;

Fig 2

ein Stiftzylinderschloß mit einem Gehäuse, das an den Schmalseiten eines Rechtecks durch Kreisbogen - ovalartig abgerundet ausgebildet ist, wobei der Schlüssel voll dargestellt worden ist, ohne Rücksichtnahme auf die sich in Verriegelung oder außer Verriegelung befindlichen Gehäuse-, Kern- und Kernprofilstifte;

Fig 3

einen Querschnitt durch den aus den Figuren 1 und 2 ersichtlichen Zylinderkern, in größerem Maßstab;

Fig 4

eine ausschnittsweise Darstellung aus einem Stiftzylinderschloß gemäß der Erfindung mit in den Schlüsselkanal eingeführtem Schlüssel und einem Pilzstift;

Fig 5

eine Darstellung entsprechend Fig. 4, allerdings mit vier Pilzstiften;

Fig 6

ein Stiftzylinderschloß nach einer "gedanklich" um 180 Grad vorgenommenen Drehung des Kerns im Gehäuse ohne Schlüssel;

Fig 7

das aus Fig. 5 ersichtliche Schloß in verriegeltem Zustand, also bei aus dem Schlüsselkanal herausgezogenem Schlüssel;

Fig. 8

einen Querschnitt durch ein Stiftzylinderschloß entsprechend Fig. 1 bei einer weiteren Ausführungsform der Erfindung, wobei der Schlüssel voll dargestellt worden ist, ohne Rücksichtnahme auf die sich in Verriegelung oder außer Verriegelung befindlichen Gehäuse- Kern- und Kernprofilstifte;

Fig. 9

einen Teillängsschnitt durch ein Stiftzylinderschloß gemäß der Erfindung mit nur einem Pilzstift;

Fig. 10

eine weitere Ausführungsform, ebenfalls im Längsschnitt mit vier Pilzstiften und einem Zylinderstift;

Fig. 11 bis 16

verschiedene Querschnitte durch einen Schlüssel und

Fig. 17

eine Teilseitenansicht zu einem Schlüssel.

Fig. 18

einen Querschnitt durch ein Hahnprofilzylinder, wobei der Schlüssel voll dargestellt worden ist, ohne Rücksichtnahme auf die sich in Verriegelung oder außer Verriegelung befindlichen Gehäuse-, Kern- und Kernprofilstifte.

In the drawing, the invention is illustrated - partly schematically - in several exemplary embodiments. Show it:

Fig. 1

a cross section through a pin cylinder lock according to the invention, the deepest point of core and mushroom pins is shown to the left of the vertical center line, without a key in the key channel, while to the right of this center line the highest point of the mushroom and core pins, i.e. by the Key raised, illustrated, with the key fully illustrated, regardless of the locked or unlocked body, core and core pins;

Fig. 2

a cylinder lock with a housing, which is formed on the narrow sides of a rectangle by a circular arc - oval-like rounded, the key has been shown fully, regardless of the locked or unlocked housing, core and core profile pins;

Fig. 3

a cross section through the cylinder core shown in Figures 1 and 2, on a larger scale;

Fig. 4

a fragmentary representation of a pin cylinder lock according to the invention with a key inserted into the key channel and a mushroom pin;

Fig. 5

an illustration corresponding to Figure 4, but with four mushroom pens.

Fig. 6

a pin cylinder lock after a "mental" rotation of the core made 180 degrees in the housing without a key;

Fig. 7

the lock shown in FIG. 5 in the locked state, that is to say with the key removed from the key channel;

Fig. 8

a cross section through a pin cylinder lock corresponding to Figure 1 in a further embodiment of the invention, wherein the key has been shown in full, regardless of the locked or unlocked housing core and core profile pins.

Fig. 9

a partial longitudinal section through a pin cylinder lock according to the invention with only one mushroom pin;

Fig. 10

a further embodiment, also in longitudinal section with four mushroom pins and a cylindrical pin;

11 to 16

different cross sections through a key and

Fig. 17

a partial side view of a key.

Fig. 18

a cross section through a cock profile cylinder, the key has been fully shown, regardless of the locked, or locked locking housing, core and core profile pins.

The reference numeral 1 denotes a housing, which in cross-section can be arbitrary, but in the embodiments according to FIGS. 1 and 4 to 10 is cylindrical on its outer surface 2, while the housing 1 in the embodiment according to FIG. 2 in cross-section is rounded on its outer lateral surface 2, namely on its narrow sides, in the form of arcs and thus has a kind of flat oval design. This is a rectangular cross-sectional shape that is rounded on the narrow sides by arcs.

In the housing 1 is a cylindrical core 4 of only z. B. 10 mm outer diameter rotatably. The housing 1 and the core 4 can consist of the same or different materials, for example both made of brass or both made of steel.

In the housing 1 with parallel longitudinal axes 5, 6, 7, 8 and 8a in the illustrated embodiments, five bores 9, 10, 11, 12 and 13 are arranged as blind bores with respect to one another, with their longitudinal axes in the same cross-sectional plane, and consequently in series lie in a row. Of course, the number of holes 9 to 13 can be larger or smaller than shown in the drawing. A tumbler spring is arranged in each of the bores 9 to 13 as a compression spring 14, 15, 16, 17, 18, which on the one hand lies in the deepest of the associated bore 9 to 13 and on the other hand against a housing pin 19, 20, 21 arranged in the bore in question , 22 and 23 supports. The housing pins 19 to 23 are arranged to move longitudinally in the associated bores 9 to 13 and are designed to be conical or chamfered on their end faces. The housing pin 21 is designed in FIG. 4 as a mushroom pin, while the other housing pins 19, 20, 22 and 23 are cylindrical. In the embodiment according to FIG. 5, the housing pins 19, 20, 22 and 23 are mushroom pins formed, while only the housing pin 21 is a cylindrical housing pin. Of course, only cylindrical housing pins or only mushroom pins or a larger or smaller number of mushroom pins or cylindrical pins can be used as housing pins in embodiments within the scope of the inventive concept (object and solution).

A core pin 24, 25, 26, 27 or 28 is arranged coaxially to the housing pins 19 to 23, which are chamfered as cylindrical pins with an end section facing a key channel 29 for a profile flat key 30, with a conical or spherical shape.

One pair of pins each, consisting of a housing pin and a core pin, e.g. B. the housing pin 23 and the core pin 28 has a certain length when coaxially superimposed, which is referred to as "pin pair length" L. The pin pair lengths L of the other pairs of housing and core pins should be equal to the pin pair length L of the housing pin 23 and the core pin 28.

4 clearly shows the incision steps 31, 32, 33, 34 and 35 of the key 30, which cooperate with the tapered end sections of the core pins 24 to 28 such that the upper edges of the core pins 24 to 28 in the parting plane, that is, in complete the plane of the outer surface 3 of the core 4 when the key 30 fits into the key channel 29. In this case, the key 30 moves the associated pairs of housing pins 19 to 23 and associated core pins 24 to 28 to the correct height corresponding to the key incisions against the restoring force of the compression springs 14 to 18.

On the diametrically opposite side to the housing pins 19 to 23 and the core pins 24 to 28 are coaxial, thus coaxial in bores 36, 37, 38, 39 and 40, housing pins 41, 42, 43, 44 and 45 are longitudinally displaceable against the restoring force of springs 46 , 47, 48, 49 and 50 arranged, which are supported at one end against the relevant housing pin 41 to 45 and at the other end against a rivet 51, 52, 53, 54 and 55, respectively. The bores 36 to 40 are thus also arranged in a plane at a distance and parallel to one another with their longitudinal axes. Those in the holes 36 to 40 Housing pins 41 to 45 are each of equal length and, at their ends - as can be seen in FIG. 7 - bevelled or crowned and engage with correspondingly assigned core bores when the key is removed. In a plane running through 90 degrees to the plane shown in FIG. 4, bores are also provided spaced apart and with their longitudinal axes running parallel to one another, in pairs diametrically opposite one another, of which only the bores in the cross-sectional plane shown in FIG. 1 are provided Bores 56 and 57 can be seen. The bore 56 is closed by a rivet 58 flush with the outer lateral surface 2, while the bore 57 is designed as a blind bore and opens out in the direction of the core 4 like the bore 56. Instead of a plurality of such bores 56 and 57, which each run coaxially with one another and are arranged at a distance from one another, such as, for example, the bores 36 to 40, fewer or more such bores can also be arranged, for example only the pair of bores 56 and 56 shown in FIG. 1 57. If there are several pairs of holes, the holes on each side are arranged parallel to one another and in pairs coaxially with the holes in the diametrically opposite row. In each of these bores 56 and 57 and possibly further bores, a compression spring 59 or 60 is arranged as a tumbler spring, the spring 59 on the one hand against the rivet 58 and on the other hand against a housing pin 61 is supported under prestress, while the spring 60 is supported on the one hand in the deepest of the blind bore 57 and on the other hand against a housing pin 62 and thereby loads the housing pins 61 and 62 in the direction of the core 4 in such a way that their tips on the outer lateral surface 3 concerns. The diameter of the bores 56 and 57 and of any further bores with housing pins lying behind one another in the same plane and parallel to one another is the same size as the diameter of the bores 9 to 13 and 36 to 40, which likewise have the same diameter.

The longitudinal center axis running through the respective pairs of holes 56 and 57 is designated 63.

At an angle of z. B. 45 degrees are in the embodiments according to FIGS. 1 to 7 and FIG. 18 on both sides of the axis extending through the bores 9 to 13 or 36 to 40, for example to the longitudinal axis 5 on both sides of this axis 5 or the other axes, depending one or more bores 64 and 65 are arranged, the longitudinal axes 66 and 67 of which, accordingly form an angle of 90 degrees to each other and intersect on the core longitudinal axis 68. In the bores 64 and 65 and possibly further bores, not shown, which are parallel and at a distance from each of the bores 64 and 65 and in each case the same cross-sectional plane, a core profile pin is arranged so as to be longitudinally displaceable, only the two core profile pins 69 being shown in FIG. 1 , 70 are arranged. The bores 64, 65 and the further bores, not shown, are each closed by flush rivets 71 and 72, which are flush with the outer lateral surface 2 of the housing 1, against which a compression spring 73 and 74 is supported at one end and with its other end against the assigned housing pin 96 or 97 acts on the core profile pins 69 or 70 or against the other core profile pins, not shown.

In the embodiments shown in FIGS. 1 to 7, two such bores with core profile pins are provided on each side, so that there are a total of four pairs of core profile pins. Several pairs, e.g. B. four core profile pins can be provided on each side, so that there are eight pairs.

The key 30 has coaxial to the bores 64 and 65 and coaxial to the other bores, not shown, on each side with depressions or indentations in the form of blind bores, of which only the indentations 75, 76 and 77 and the penetration curves in FIG. 4 are shown, into which the ends of the core profile pins 69, 70 and the following can dip, if it is the key 30 which fits the pin cylinder lock (FIGS. 11 to 17).

The embodiment in Fig. 2 is basically the same, so that the same reference numerals have been used for parts with the same function except for the difference that the housing pins are arranged in bores 78 and 79, the longitudinal center axis 80 and 81 thereof at an acute angle the axis 82 extending centrally through the housing 1 and the core 4 is arranged, which at the same time each form an acute angle with an axis extending through the bores for housing pins and core pins, for example 82. The bores 78 and 79 are closed to the outside by rivets 83 and 84, respectively. In holes 78 and 79 and possibly further, parallel and spaced apart from these bores 78, 79 and in each case in the same plane behind bores are arranged in the lower bore section compression springs such as the springs 73 and 74 of FIG. 1, which at one end against the associated support the hollow housing pin and the other end against the wall of the blind hole. The longitudinal axes of a pair of core profile pins in turn intersect on the axis 82 of the core, which also applies to the longitudinal axes 80 and 81, respectively. As a result, cylindrical housing pins or core profile pins can always be used in cross-section in all designs.

While the pin cylinder lock shown in FIG. 1 shows the deepest point of the core and mushroom pins to the left of the vertical center line 5, and specifically without the key 30 inserted into the key channel 29, the highest point of the mushroom and is on the right of this center line 5 Core pins, raised by key 30, illustrated.

The embodiments according to the figures are e.g. B. for containers that can contain valuables used. The lock is locked to the left of the center line 82 (FIG. 2), while the illustration of the parts is illustrated to the right of this when a key 30 is in the key channel 29 during the insertion process, so to speak. It is therefore a kind of "snapshot" when the key 30 has moved a certain mushroom and / or core pin and housing pin upwards with its highest point. After passing the highest point through the key 30, the parts then move back into their starting positions matching the key incision stages 31 to 35 under the influence of the tumbler springs 14 to 18.

3 that the longitudinal center axes of all bores, that is to say the bores for the core pins and the two core profile pins at 45 degrees to one another, apparently intersect at point 68 on the longitudinal axis of the core.

5, a key 30 has been inserted into the key channel 29. It can be seen by comparison with FIG. 4 that it is a different one Permutation acts, so that one can integrate four mushroom pins 19, 20, 22 and 23 in FIG. 5 and only one mushroom pin 21 in FIG. 4. Mushroom pens are only installed if the ratio of the length of the pin to the possibility of lifting in the housing 1 and the depth of the key cut results in a length of the pin that enables a groove to be made in the housing pin and the housing pin to tilt in the hole.

From Fig. 7 it can be seen that the pin cylinder lock is locked when the key 30 is pulled out of the locking channel 29. Of course, in this position the core pins 24 to 28 and the housing pins 19 to 23 are moved by the tumbler spring 14 to 18 at the most downward (seen in the drawing plane) and engage in the assigned bores. The same happens from below with the housing pins 41 to 45. It can be seen from Fig. 6 that if you would mentally rotate the core position according to FIG. 7 180 degrees without a key 30, the pin pair lengths L change in L₁ because a short housing pin is replaced by a long one and vice versa. The pin pair length L is dimensioned such that the stroke of the pins to get into the parting plane is no longer possible, thereby preventing a further core rotation. It would then no longer be possible to insert a suitable key into the key channel 29 if the core position was rotated by 180 degrees.

6, the core 4 has been rotated through 180 degrees without a key 30, that is to say in "thoughts". It can be seen from this that, for example, the core pin 28, which belongs to the housing pin 23, meets at such a rotation of 180 degrees on a core pin 45, which results in a different pin pair length L than in Fig. 1. The pin pair length L has here in L₁ changed. If the appropriate key 30 were now inserted into the key channel 29, this would have to be able to execute the stroke of all the core pins 24 to 28 with the highest key shaft height. Then, however, some pairs of pins could no longer carry out the required stroke due to the pin pair length being too long, but would instead move the associated tumbler springs to block, i. H. the key 30 could not be inserted into the key channel 30 at all.

If core pins and housing pins were to be accidentally moved to an unwanted opening by means of a key 30 that did not match, the cylinder core would be locked by the housing pins after a certain angular rotation and the key could no longer be removed and the core would be blocked.

It is therefore no longer easily possible to move the core pins 24 to 28 in order to then rotate the core 4. After a certain angular rotation of the core 4, the housing pins 61, 62 or other housing pins or pairs of housing pins would then snap into the associated bores and lock the core 4 again against rotation. The burglar would then only have to overcome these housing pins 61, 62 and others again. Should he manage to do this again, housing pins would snap into place as in Fig. 1, below. The lock according to the invention would be locked again and again after different angular rotations, the burglar hardly having the possibility of simultaneously bringing numerous housing and core pins or core profile pins arranged at different angles against the restoring force of tumbler springs from the locking positions with the core 4.

In Fig. 6 a total of four holes are provided per key flat side for core profile pins. These holes for core profile pins enable the core profile pins 69, 70 and further core profile pins to be “dipped away” laterally toward the back of the key. In Fig. 3, these are arranged at 45 degrees to the horizontal longitudinal center axis. In the longitudinal direction of the key 30 or the key channel 29, a plurality of diametrically opposed pairs of core profile pins can be provided, as mentioned.

So when the key 30 is inserted into the key channel 29, it not only shifts the core pins 24 to 28 and any mushroom pins and the lower housing pins against the restoring force of the tumbler springs in the housing 1, but it also presses sideways, so to speak, against the end faces of the core profile pins 69 , 70 and the following and the associated housing pins against the restoring force of the tumbler springs laterally and downwards, ie in the direction of the key core, until the core profile pins 69, 70 and following are so to speak laterally immersed in the key 30 and the assignment of cuts and indentations in the Key matches the respective core or core profile pins so that the parting plane reaches the exact core diameter position at all points of the core circumference. Only when all of these conditions are met can the key 30 and thus the core 4 in the cylinder 1 be turned.

The number of permutations given by the incisions 31 and 35 in the key 30 increases by laterally arranged core profile pins 69, 70 and the following by a considerable amount, depending on the key profile or core profile.

Fig. 8 differs from Fig. 1 in that in this in the cross-sectional plane shown on diametrically opposite sides not only two of the other housing pins 61 and 62 are arranged as baffles, so to speak, but two further pairs of housing pins are provided, each in bores 87 and 88 are guided and are acted against the restoring force by tumbler springs indicated only by dash-dotted lines against the core. Of course, in the axial longitudinal direction of the core 4 and the housing 1 - side by side - as can be seen from FIG. 8, housing pins, core pins, further housing pins as baffles and core profile pins, each in pairs and at the same angular intervals as can be seen in FIG. 8, can be arranged.

FIGS. 9 and 10 also show that the key 30 is provided with indentations 89 on its front edge. Such an indentation can be provided on the invisible key side. The indentations of the key press against the lateral lateral surfaces (spherical or conical) of the core profile pins and urge them laterally against the restoring force of the tumbler springs at an acute angle until they can plunge into the assigned recesses in the key and the core 4 can then be rotated.

In addition, from FIG. 9 one can see indentations 90 and 91, while an indentation 92 is provided in broken lines, that is to say on the other side.

In the key 30 shown in FIG. 10, indentations 93 and 94 are visible, while an indentation 95 is arranged on the other side of the key and is accordingly invisible from FIG. 10. Embodiments are therefore also conceivable in which only one core profile pin is provided in each case from the different key sides in different cross-sectional planes.

The figures shown in FIGS. 11 to 16 show that the lateral indentations, for. B. 75, 76, 77, 90, 91, 92, 93, 94 and 95 can attack at different altitudes and at different angles of the key, so that it is practically impossible for a burglar to use such a lock with an inappropriate key without using force to open.

A tap profile can be seen from FIG. The same reference numerals have been used for parts with the same function. The function is as described in connection with the above embodiments.

A so-called "paracentric" profile, clearly defined in the introduction to the description, can be clearly seen from FIG. 3. The tips of the core profile pins overlap on the inner side and thereby allow the locking position of the housing pins, while on the outer side the tips touch on the profile axis 5 or other axes orthogonal to the longitudinal axis of the core 4 or other axes in other planes. In this basic position, the core profile pins push the housing pins back so far that the housing pins unlock the core 4 and the latter can be rotated. Would one in this position, for. B. engage between the tips of the core profile pins with a burglar tool, the core profile pins would be moved axially further and then pushed into the locked position, so again lock the core 4 with respect to the housing 1.

The features described in the abstract, in the patent claims and in the description and apparent from the drawing can be essential for realizing the invention both individually and in any combination.

Claims (9)

1. Cylinder lock provided with tumbler pins and a cylindrical housing in which is pivotally run a core being circular in cross section and having a longitudinal rib profile in a key channel (24) for a longitudinal rib profile flat key which is equipped with recesses (31, 32, 33, 34, 35) at the small face and with pin paires lying close on one another in core longitudinal axial direction and consisting each of a housing pin (19, 20, 21, 22, 23) and a core pin (24, 25, 26, 27, 28), whereby said housing pins (19, 20, 21, 22, 23) are spring-loaded, and whereby said pairs consisting of core and housing pins (e.g. 19, 24) are controllable from said key small face, and across that is provided at least with a tumbler radially arranged and controllable from said key breadth face and which is provided at an angle to said pins controllable from said key small face and which consists of a core pin (e.g. 24) and of a housing pin (e.g. 19) equipped with a spring element (e.g. 14), whereby said longitudinal rib profile flat key ridge touches said core casing face and whereby said cylindrical core (4) is automatically blocked in an insufficiently bridged core boring after an unauthorized key tumbler alignment and an initial rotation, characterized in that

   a) at least a key groove (75, 76, 77, 90, 91, 92, 93, 94, 95), which controlls spring-loaded tumblers consisting of a core pin (69, 70) and a housing pin (96, 97) is provided each on both said key breadth sides of said longitudinal rib profile flat key sides displaced in axial direction to said key recesses (31, 32, 33, 34, 35), whereby said core pins (69, 70) plunge under an acute angle (α) to said key breadth face into said opposite grooves (75, 76, 77, 90, 91, 92, 93, 94, 95) of said key breadth face;

   b) at least a spring-loaded housing pin (41 to 45) is allocated to said key ridge of said longitudinal rib profile flat key (30), whereby said housing pin (41 to 45) plunges into a corresponding pocket bore hole at a drawn-off profile flat key (30) and which is driven back into an unlocked position by said profile flat key ridge and which is arranged to each of said housing pins (19 to 23) displaceable from said key small face in an opposing and coaxial manner;

   c) and the diameter of said bore hole (36 to 40) for said housing pins (41 to 45) cooperating with said key ridges corresponds to said diameter of said bore hole for said core pins (24 to 28) controllable from said key small face;

   d) said longitudinal displacement of said core pins (69, 70) arranged in an inclined manner is limited each by a stop shoulder (98).
2. Cylinder lock according to claim 1, characterized in that said outside diameter of said core (4) is not more than 10 mm.
3. Cylinder lock according to claim 1 and/or 2, characterized in that said outside diameter of said housing (1) amounts to 23 mm.
4. Cylinder lock according to claim 1 or to one of the following claims, characterized in that the dimension amounts to 13 x 24 mm for an oval housing or a housing of rectangular or square basic shape in cross section having circular arc rounding-offs at said small sides, where-as said core has an outside diameter of 10 mm.
5. Cylinder lock according to claim 1 or to one of the following claims, characterized in that cylindrical housing pins (19) and mushroom pins (21) are arranged each alone or mixed in different numbers in one and the same pin cylinder lock.
6. Cylinder lock according to one or more of said preceding claims, characterized in that further housing pins (e.g. 61, 62) are arranged in said housing (1) on opposite sides in different planes and/or in several rows in tandem resp. side by side.
7. Cylinder lock according to one or more of said preceding claims, characterized in that said longitudinal axes (66, 67) of one pair of matching core profile pins (e.g. 69, 70) enclose an angle of 90 degrees with each other.
8. Cylinder lock according to one or more of said preceding claims, characterized in that two diametrical opposing bore holes for housing pins are formed each by a bore hole running through said core bore hole and that one bore hole of such bore hole pair is each formed in a locked manner towards the outside, for instance by a rivet or a rivet with a bored hole, where-as the other matching bore hole is a pocket bore hole.
9. Cylinder lock according to one or more of the preceding claims, characterized in that all bore holes required in said housing (1) first are bored, then, if required, some bore holes are riveted, thereupon, the housing will be grinded and finished, subsequently, all springs (e.g. 14, 15, 16, 17, 18), housing pins (e.g. 19, 20, 21, 22, 23), core pins (e.g. 24, 25, 26, 27, 28), core profile pins (69, 70) and said core (4) are montable from inside by said core bore hole having a diameter of only 20 mm.

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