SK287820B6 - Cylinder-lock and flat-key combination - Google Patents

Abstract

Combination of a cylindrical lock (1, 1', 1'') and a flat key (2, 2', 2'') that is provided on its one wider surface with a variation groove (5) having its front portion provided in the region of the key (2, 2', 2'') tip with a lead-in enlargement (50) for guiding a side projection (41) of a side adjuster (4). The side projection (41) of the side adjuster (4), being guided in a guide shaft (31), extends into said variation groove (5). When a corresponding key (2) is inserted into a key passage (30), said side adjuster (4) resumes a position in which it is completely inserted into a rotary core (3), and when a wrong key (2) is inserted therein, the side adjuster overlaps (4) said rotary core (3) outer cylindrical surface (3) and engages with opposite locking recess (103) performed in the cylindrical lock (1, 1', 1'') housing (10).; Variation groove (5, 511) of a superior key (2) has in at least one position (P1 to P5) in one its functional place (51) controlling the position of the side adjuster (4), a vertical position that differs from the vertical position of the functional place (51) of a variation groove (5, 511', 511'') of a subordinate key (2', 2'') in the same position (P1 to P5) by at least one dimensional distance (a).

Description

The invention relates to a combination of a cylinder lock and a flat key to form lock systems with master-master and slave keys, wherein master-key can control all locks of the system and only a group of slave locks can be controlled by slave keys.

BACKGROUND OF THE INVENTION

There are known lock systems with a master - general and at least one slave key, in which the master - master key can control the master - general lock and all the slave locks of the system, the first slave key can control the first slave lock and the second to nth slave only the n-th slave key can be controlled by the n-th slave key. The rotation of the cylinder lock core is conditioned by the alignment of the faces of the spring-loaded radial adjusters so that they are flush with the circumferential cylindrical surface of the rotary core, which is reached by the teeth on the lower narrow edge of the inserted key. In order to be able to insert a corresponding key from a plurality of keys with identical toothing on the lower narrow edge of the key into the key channel of the cylinder lock, the cross-section of the flat key is provided with profile grooves and ribs which engage negatively formed ribs and grooves in the key channel. . In this case, the profile of each subsequent sub-key exceeds at least partially resp. in some parts, the master key profile and its associated key channel profile. Thus, the slave key cannot be inserted into the key channel of the master lock, while the master key can be inserted into the key channel of the master lock and into the key channels of all stages of the slave lock.

The disadvantage of these lock systems is that for each group lock t. j. The main, first to n-th subordinate, has to produce a different key and key channel profile, which is expensive to manufacture, especially in the production of key channels, as well as the ability to easily produce the master key from the subordinate by simply grinding off the section.

Also known are lock systems of cylinder locks and flat keys, where the profiles of the master and slave keys and thus the profiles of their key channels are identical, but where the radial adjusters are designed as multi-part, so that the toothing depth of the master key differs from the toothing depth of the slave keys . In these systems, the slave keys can thus be inserted into the key channels of the master locks, but due to the non-release of all radial pin adjusters caused by the different tooth thickness of the slave keys, the rotary core cannot be rotated.

The disadvantage of these systems is the small number of combination options and the low number of safety features.

There are also known lock systems with a combination of both said lock systems, in which the sub-keys of the individual lock system groups have both a different key and key channel profile as well as different recess depths at the bottom narrow side of the flat key. These locking systems eliminate the disadvantage of a small number of combination possibilities of the previously described locking systems with identical master and slave key profiles.

However, their disadvantage remains the economical demands of production, resulting from the production of different profiles of both the key channels and the flat keys for different degrees of slave locks.

German patent DE 36 03 687 discloses a locking device consisting of a cylinder lock and a flat key which, in addition to the cut-outs in the lower narrow side of the key, which cooperate with spring-loaded radial adjusters and in addition to the profile grooves and ribs on the wider sides of the key, groove. This additional variation groove is formed in one wider side of the key near its guiding back, begins with an extended approach at the tip of the key and extends curved or wavy in shape along the guiding upper back of the key so that distances of at least two longitudinally spaced points on the lower side edge have a different value from the back. An additional variation groove is used to unlock additional unsprung side lateral adjusters guided in the rotating core guide shafts whose longitudinal axes are vertical and parallel to the plane of the key channel. Side adjusters, the length of which corresponds to the length of the guide shaft resp. the length of the chord of the circumferential circle of the rotary core are equipped with lateral protrusions, ie noses which run into the variation groove when inserting the key into the key channel and according to its vertical course the lateral adjusters are vertically adjusted so that neither the upper nor lower arm of the lateral adjuster of the core and did not interfere with the opposite locking recesses in the cylinder lock housing.

These side adjusters serve as additional security features of the lock system with spring-loaded radial adjusters, controlled by slots on the lower narrow side of the key and cannot serve to distinguish between master and slave locks in master and master key lock systems.

SUMMARY OF THE INVENTION

Essentially, the combination of a cylinder lock and a flat key according to the preamble of claim 1, characterized in that the variation groove of the master key has at least one position in its functional position controlling the setting of the side adjuster, a vertical position which differs from the vertical position of the function key of the variation groove of the slave key at the same position by at least one dimensional rebound, wherein the length of at least one arm of the side lock adjuster cooperating with said flue spot by its lateral projection is greater by at least one dimensional rebound than the length of the corresponding the side adjuster of the slave lock, with the side adjuster of the slave lock being shortened from the arms from the side projection in the direction of which the vertical distance of the functional position of the variation groove is made the key of the variation groove of the master key.

Such a construction is less expensive to manufacture than producing different key channel and key profiles for each slave group, and compared to previously known similar systems, it is possible to achieve many more combinations and many more stages of slave groups.

It is preferred that the length of the side lock of the master lock is greater by at least one dimensional offset than the length of the side lock of the slave lock.

Such a construction further increases the number of possible combinations.

It is also preferred that the variation grooves are formed on both wider sides of the flat key.

This embodiment further increases the number of combination possibilities and extends the number of security features of the lock system.

Furthermore, it is advantageous if the narrow side of the flat key opposite its back is provided with cut-outs cooperating with radial cap adjusters.

This design further increases both the number of combination options and the number of safety features.

BRIEF DESCRIPTION OF THE DRAWINGS

Some examples of embodiments of the invention are schematically illustrated in the accompanying drawings, in which the individual figures represent:

Fig. 1a shows a longitudinal section through a master cylinder lock with a master key inserted in the first variant, FIG. 1b shows a cross-section of the cylinder lock of FIG. 1a in axis 311, FIG. 1c shows a view of the rotary core of the cylinder lock of FIG. 1a in the direction S, FIG. 2a shows a longitudinal section through the first slave cylinder lock with the first slave key inserted - the first variant, FIG. 2b shows a cross-section of FIG. 2a in axis 311, FIG. 3a shows a longitudinal section through a second slave cylinder lock with a second slave key inserted - a variant 1, FIG. 3b shows a cross-section of FIG. 3a in axis 311; FIG. 4 is a cross-sectional view of the second slave cylinder lock as in FIG. 3b, but with the master key - variant 1 inserted, FIG. 5 is a cross-sectional view of a second slave cylinder lock as in FIG. 3b, but with the first slave key - variant 1 inserted, FIG. 6 is a cross-sectional view of the master cylinder lock as in FIG. 1b, but with the second slave key inserted - variant 1, FIG. 7 shows schematic diagrams of variation grooves of the first variant according to FIG. 1a, 2a, 3a, FIG. 8 shows schematic diagrams of variation grooves of the second variant, FIG. 8a is a cross-sectional view of a general lock with a master key inserted - variant 2, FIG. 8b is a cross-sectional view of the first slave lock with the first slave key inserted - the second variant, FIG. 8c is a cross-sectional view of a second slave lock with a second slave key inserted - a variant 2, FIG. 9 schematically shows the variation grooves of the third variant, FIG. 9a is a cross-sectional view of a general lock with a master key inserted - variant 3, FIG. 9b is a cross-sectional view of the first slave lock of the third variant with the first slave key inserted - the third variant, FIG. 9c is a cross-sectional view of a second slave lock with a second slave key inserted - variant 3.

DETAILED DESCRIPTION OF THE INVENTION

As shown in the accompanying drawings, an exemplary lock system with master and slave flat keys consists of a master-cylinder lock i (FIGS. 1a, 1b), a first slave lock Γ (FIGS. 2a, 2b), a second slave lock 1 (FIG. 3a, 3b) and the master master key 2, the first slave key 2y and the second slave key 2. Each cylinder lock 1, 1, 1, 1 consists of a housing 10 in which the rotary core 3 with the key channel 30 is housed. A plurality of radial bores 101 are formed in the housing 10, in which spring-loaded housing tenon adjusters 102, which abut the core tenon adjusters 33, are received in radial bores 310 of the rotary core 3 and protrude into the key channel 30 with their ends. two rows of guide shafts 31 arranged vertically and parallel to the longitudinal plane of the key channel 1a, wherein the guide shafts 31 are arranged in the regions between adjacent radial bores 310 for the core tenon adjusters 33. In the guide shafts 31 there are slidably mounted unsprung tenon-shaped lateral adjusters 4, provided with lateral projections 41 for engaging the flat key variation groove 5 2. On the side of the opposite side projection 41, the side adjuster is provided with a guiding flag 42 disposed in the guide slot 32 of the core 3, this arrangement preventing the side adjuster 4 from rotating about its longitudinal axis 311. Unlike the ends of the guide shafts 31 in the rotary core 3 In the basic locked position, blocker recesses 103 are formed in the housing W into which the ends of the arms 44, 45 of the lateral adjusters 4 engage when the key 2 is inserted into the key channel 30 and when an inappropriate key is inserted into the key channel 30. If at least the end of one arm 44, 45 engages the locking recess 103, the lock is locked and the rotary core 3 cannot be rotated. The flat key 2 is provided on its lower narrow side opposite its back 21 with slots 22 cooperating with radial core tenon adjusters 33 and on each of its wider sides provided with a variation groove 5. The front of the variation groove 5, 511. 511 is provided in the region of the key tip 2 with an inlet extension 50 and then extends approximately in the shape of a wavy line along the guide back 21. The function points 51 of the variation groove 5 are those which define the vertical position of the side pin 41 when the key 2 is fully inserted. and thereby the side adjuster 4. FIG. 1a, 2a, 3 and the intersection points of the projections of the axes 311 with the variation groove 5 are shown. The cross-sections through the function points 51 at the position P4 are shown in FIG. 1b, 2b, 3b. As shown in FIG. 1a, which represents the master-lock 1 with the master-key 2 inserted, there is one blowing location 51 of the variation groove 5, 511 of the master-key 2 closest to the upper back 21 as compared to the first slave key 21, which is shown in FIG. 2a is inserted into the first slave lock 11a. Thus, the corresponding functional position 51 of the variation groove 5, 511 'is shifted one offset and vertically downward - see FIG. 7. The second slave key 2, which is shown in FIG. 3a, inserted into the second slave lock 1, has a functional position 51 displaced by one bounce and downwards relative to the first slave key 2y, and thus by two bounces and downwards relative to the master key 2. As shown in FIG. 1b, a side adjuster 4 with a length L is assigned to the general lock 1, which is equal to the length of the rotary core 3 at the position of the side adjuster 4, the upper arm 44 being h and the lower arm 45 i e i. As shown in FIG. 2b, a lateral adjuster 4 with a length L '- L - a is assigned to the first slave lock 1, the lower arm 45 having a length of 1-a being shortened by a? the length h of the upper arm 44 remains unchanged. As shown in FIG. 3b, the second slave lock 1 is associated with a lateral adjuster 4, the length of which L = L - 2a, the lower arm 45 being shortened by a step 2a, the length of which is 1 - 2a; the length h of the upper arm 44 remains unchanged.

In FIG. 4 is a cross-sectional view of the second slave cylinder lock 1 as in FIG. 3b, but with the general key 2 shown in FIG. Ia. FIG. 4 it can be seen that the side adjuster 4 does not extend with its ends into the locking recesses 103 of the housing 10 and the rotary core 3 with the master key 2 can be rotated.

In FIG. 5 shows a cross-section through a second slave cylinder lock 1 as in FIG. 3b, but with the first slave key 21 shown in FIG. 2a. It is therefore the master key to this cylinder lock 1. It can be seen from the figure that the side adjuster 4 does not extend with its ends into the locking recesses 103 of the housing 10 and the rotary core 3 with the first slave key inserted can be rotated.

In FIG. 6 shows a cross-section through the general lock 1 as in FIG. 1b, but with the second slave key 2 inserted. It can be seen from the figure that the lower arm 45 of the side adjuster 4 extends into the locking recess 103 in the length of two rebounds and the rotary core 3 with the second slave key 2 inserted.

In the described example 1 of the variation course of the variation groove 5 at the functional location 51 at position P 4, the general variation groove 511 of the master key 2 was positioned closest to the back 21. The first sub-variation groove 511 'of the first sub-key 2y was moved vertically downwards by one bounce and and the second sub-variation groove 511 of the second sub-key has been shifted from the function location 51 of the master key 2 by two rebounds and down and from the function location 51 of the first sub-key 2 2 θ one rebound and down. Schematically, the waveforms of the first variant of the variation groove 5, 511, 511 ', 511 are shown in FIG. 7th

In FIG. 8 is a schematic representation of a variant 2 of the course of the variation groove 5, 511, 511 ', 511 where the function position 51 of the general variation groove 511 is in the middle, the first subordinate variation groove 511' is shifted one offset and upwards to the back 21 and the second subordinate of the variation groove 511 is offset from the blow point 51 of the master key 2 by one step and downward. Analogous to Figures 1b, 2b, 3b, Figs. 8a is a cross-sectional view of the function lock 51 of the general lock I with the master key 2 inserted; FIG. 8b shows the same cross section of the first slave lock U with the first slave key 2j inserted, and FIG. 8c is the same cross-section of the second slave lock with the second slave key 2 inserted. As shown in FIG. 8a, the length L of the side lock 4 of the general lock is equal to the length of the string of its core 3. As can be seen from FIG. 8b, the side adjuster 4 is shortened over the side lock adjuster 4 of the general lock 1 by the upper arm 44 by one bounce and the lower arm 45 is shortened because the blowing point 51 has shifted upward by a bounce a compared to the function key of the general key 2. As shown in FIG. 8c, the side adjuster 4 is shortened relative to the side lock adjuster 4 of the general lock I by one step a, both the upper arm 44 and the lower arm 45, since the blow point 51 of the first slave key is offset by one step and upwardly and the functional position 51 of the second slave key 2 is shifted one step and downward.

In FIG. 9 is a schematic representation of a variant 3 of the course of the variation groove 5, 511, 51 ', 511, where the functional position 51 of the general variation groove 511 is the lowest from the back 21, the functional position 51' of the first subordinate variation groove 51 'is one offset therefrom; higher and the blowing location 51 of the second sub-variation groove 511 is two bounces higher and higher therefrom. As can be seen from the cross-sections of such locks in FIG. 9a, 9b, 9c, in which keys 2, 2j, 2 of corresponding steps are inserted, the side lock 4 of the general lock I has a length L equal to the length of the chord of the rotary core 3, the side adjuster 4 of the first slave lock 1 / the shortened upper arm 44 by a bounce aa has a length L '- L - a; the side adjuster 4 of the second slave lock 1 (FIG. 9c) has a shortened upper arm 44 by two bounces and has a length L = L-2a.

From the examples, it is evident that the function location 51 of the variation groove 5 of each subsequent slave key 2, 2, 2 is offset vertically from the function location 51 of the master key 2 by at least one jump and up or down so that it does not overlap with the function location 51 at the same position of the other key 2, 2j, 2 and its associated side lock adjuster 4 of the slave lock Γ, 1 is shortened against the side lock adjuster 4 of the general lock by the same bounce on the upper or lower arm 44,45 in the direction . The position P1 to P5 is intended to mean the horizontal distance of a certain blow point 51 from the stop edge 23 of the key 2, 2j, 2, which is always identical to the horizontal distance of the axis 311 of the side adjuster 4 from the stop edge on the rotary core 3.

In the above examples, three variation waveforms of the variation groove 5, 511, 511 ', 511 for only one side adjuster 4, at one position P4, are described to understand the principle. It will be appreciated that the number of variation waveforms of the variation groove 5, 511, 51 ', 511 is dependent upon the usable vertical dimension of the wider key surface 2 and the amount of rebound a. Also, the number of positions P1 to P5 may vary and their maximum number is limited by the length of the rotary core 3. The number of side adjusters 4 depends on the number of positions P1 to P5 and whether the variation groove 5 is formed on only one or both flat sides key 2.

Of course, within the scope of the invention, it is possible to form such variation grooves 5, 511, 51V, 511 in the master and slave keys 2, 2j, 2, whose fusion locations 51 are different at two or more positions P1 to P5. It is also possible to use for the first to n th slave cylinder locks V, 1, 1, etc.. The side adjusters 4, whose length L is smaller than the length of the swivel core 3 and are the same for the next slave lock 1, 1 ', etc., only the lengths of the upper and lower arms 44, 45 vary.

Industrial usability

The combination of cylinder lock and flat key is particularly useful for lock systems with master key and slave keys to control doors in office buildings, hotels, manufacturing plants, warehouses, etc., requiring high security against overcoming.

Claims (4)

Combination of a cylinder lock and a flat key which is provided with at least one wider surface a variation groove (5), the front part of which is provided with a leading extension (50) for guiding the lateral projection in the region of the key tip (2, 2 ', 2) (41) of the side adjuster (4), wherein the vertical distance of the functional location (51) of the variation groove (5, 511, 511 ', 511) from the guide back (21) of the key (2, 2', 2) is at least one position variable according to the distance from the stop edge (23) of the key (2, 2 ', 2), wherein a side projection (41) of the side adjuster (4) extends into the variation groove (5) and is guided in a guide shaft (31) the axis (311) is parallel to the longitudinal plane of the key channel (30) in the rotatable core (3), which is housed in the cylinder lock housing (10), and when the key (2) is inserted into the key channel (30) ) through its side projection (41) engaging in the variation groove (5), set to a position in which it is fully inserted into the rotary core (3), thereby allowing it to rotate in the housing and the side adjuster (4) protrudes beyond the outer adjuster (4) a cylindrical surface of the rotary core (3) and engages an opposing locking recess (103) in the cylinder lock housing (10), characterized in that the variation groove (5, 511) of the master key (2) has at least one position (P1 to P5) ) in one of its functional positions (51) controlling the setting of the side adjuster (4), a vertical position which differs from the vertical position of the functional position (51) of the variation groove (5, 51 ', 511') of the slave key (2, 2 ') ) at the same position (P 1 to P5) by at least one dimensional bounce (a), wherein the length (h, ha, 1, 1-a) of at least one arm (44, 45) of the side adjuster (4) of the master lock (1) , (l), cooperating with that post (5 1) by its lateral projection (41), it is at least one dimensional offset (a) greater than the length (ha, h-2a, 1-a, l-2a) of the corresponding arm (44, 45) of the slave side adjuster (4) (1 ', 1'), wherein at the side adjuster (4) of the slave lock (1 ', 1' ') it is shortened from the arms (44, 45) from the side projection (41) in the direction of which the vertical bounce (a) a location (51) of the variation groove (5, 51 ', 511') of the slave key (2 ', 2' ') from a function location (51) of the variation groove (5, 511, 51') of the master key (2, 2 '). Cylinder lock and flat key combination according to claim 1, characterized in that the length (L) of the lateral adjuster (4) of the master lock (1, 1 ') is greater by at least one dimensional offset (a) than the length (La, L- 2a) of the side adjuster (4) of the slave lock (1 ', 1 "). A cylinder lock and a flat key combination according to claim 1 or 2, characterized in that the variation grooves (5) are formed on both wider sides of the flat key (2). The cylinder lock and flat key combination according to claim 1 or 2 or 3, characterized in that the narrower side of the flat key (2) opposite its back (21) is provided with slots (22) cooperating with radial core keys. via the pin adjusters (33).