CZ135993A3 - Key and cylindrical lock - Google Patents

Abstract

The invention concerns a key for a cylinder lock, the flat sides of the key having longitudinal ribs and/or grooves running in the direction in which the key is inserted into the keyhole. The key is characterized in that at least one of the flat sides of the key also has at least one groove (18, 19, 20) which is shorter than the shaft (2) of the key and which is inclined at an angle to the direction (3) in which the key is inserted into the lock.

Description

The invention relates to a key for a cylinder lock having longitudinal ribs and / or longitudinal grooves on the flat walls, which extend in the direction of insertion of the key into the key slot. It further relates to a cylinder lock for this key.

BACKGROUND OF THE INVENTION

The invention is based on keys and cylinder locks which have been disclosed in several Austrian patent applications. However, not all of these known designs are perfect in terms of safety and new variations are also offered.

The known longitudinal profiling with longitudinal ribs and / or longitudinal grooves on the flat walls can be produced by relatively simple means. In terms of the number of variations, a large number of variation options is a prime claim, especially when assembling locks with hierarchically created keys, the real options that are often available are drastically reduced, although theoretically a large number of variations are offered.

SUMMARY OF THE INVENTION

The aforementioned drawbacks are eliminated by a key according to the invention, characterized in that at least one flat wall of the key is additionally provided with at least one profile groove whose length is less than the length of the key shank and which is arranged at an angle to the insertion direction of the key.

In this embodiment, the prior art drawbacks are overcome and the keys and locks of the invention make it very difficult to imitate the keys. they offer a large number of variations and meet the required quality requirements in terms of construction and wear.

The key according to the invention is further characterized in that the profile groove cuts at least one longitudinal groove. The profiled grooves may advantageously have a cross-section that corresponds to that of the longitudinal grooves. According to further features of the invention, the profile groove can be positioned either above or below it or on both sides with respect to the groove of the grooves.

On one key, the profile grooves may have different angles to the insertion direction of the key. The longitudinal grooves and profile grooves are either on one or both flat walls of the key.

According to a further feature of the invention, the key is characterized in that, when using flat keys in cylindrical locks, longitudinal profiling according to the known method creates an invariable base profile and a variable profile within the lock, which together form the overall profile, and both the base profile and the variable profile are formed. the effective regions of the key to be closed and unlocked, and the profiles overlap, so that at least one profile element of the base profile and the variable profile, respectively, are arranged on each key wall between two profile elements of the variable profile and the base profile, respectively.

The cylinder lock according to the invention is characterized in that it is provided with sensor elements which sense the flat walls of the key and with their locking elements arranged in the shape of the letter O in the seat cut-outs in the cylindrical core in the cylinder housing. These are laid when the cylindrical core is rotated with the correct key inside the cylindrical core, but in the case of the wrong key, they remain in the seat recess and thus prevent rotation. The sensing elements are oblique plates which are arranged obliquely to the insertion direction and correspond to the angle of the profile grooves of the respective key.

Description of the drawings

BRIEF DESCRIPTION OF THE DRAWINGS The invention will now be described with reference to the drawings in which: Figure 1 is a side view of a key according to the invention; Figure 2 is a cross-section of a known profile diagram; Fig. 6 is a view of the lock detail, and Fig. 7 is a view in the direction of arrow VII in Fig. 6; Figs. 8a, 8b and 8c show a section along line VIII-VIII in Figs. Fig. 6 is a cross-sectional view of the cylinder lock according to line IX-IX in Fig. 4, with the cylindrical envelope being arranged additionally; Fig. 10 shows a side view of another embodiment of a key according to the invention; Fig. 11 is a section along the line XI-XI in Fig. 10, Figs. 12 and 13 show sections according to line XII-XII in Fig. 10; Fig. 14 represents four variants of a profile keyway; 16 to 19 show a locking element, FIG. 20 shows a side view of an exemplary embodiment of a key, FIGS. 21 to 27 show a further preferred embodiment in various views and sections, FIG. 28 is a view of a plate and FIG. 29 cross-section XXIX-XXIX of the respective lock element and FIG. 30 shows a preferred embodiment of a key.

DETAILED DESCRIPTION OF THE INVENTION

Giant. 1 schematically illustrates a key according to the invention, wherein the variation elements shown may represent an embodiment. The flat key comprises, as usual, a head 1 and a shaft 2, which in principle is fully inserted in the insertion direction 3 into the slot of the corresponding cylinder lock. The shaft 2 has an upper edge 4, a tip 5 and a lower edge 6. The stabilizing slots 7 are indicated by dashed lines and they cooperate in a known manner with the stabilizing pins in the cylinder lock.

The flat wall of the key is provided in the longitudinal profiling with two grooves 8 and 11 which extend in the insertion direction 3 of the key and thus run parallel to the upper edge 4.

Further, the flat wall is provided with additional profile grooves 18, 19 and 20 whose length is less than the length of the shaft 2 and which are arranged obliquely to the insertion direction χ of the key. A possible different orientation of the profile groove 21 is shown in dashed lines. For example, at one and the same key reading location there may be two similarly intersecting profile grooves so that the same key within one lock can be sensed by different sensor elements.

The line 22 is the symmetry of each profile groove. Depending on the design of the respective sensor element in the lock, the actual key groove formed on the key can be arranged either above or below or on either side of the profile groove symmetry 22. In Fig. 1, the profile grooves are always on both sides of the profile groove symmetric, which is just one example, as will be shown below.

FIG. 1 shows only one flat key wall. The second flat wall of the same wrench can also have longitudinal profile grooves resp. ribs and profile grooves 18, 19 or 20, wherein the angular alignment of the grooves is the same or opposite or can only be in one position.

The longitudinal profiling of the key and, analogously, the key slots in the lock is preferably carried out according to the profile system described in other Austrian patent applications. This profile systematics will be explained in more detail by means of FIG. 2. The profile systematics is based on a theoretical basic profile 23, which can be imagined as lined diamond elements 24 arranged zig-zag. Between the adjacent elements 24, the spaces formed up to the envelope planes 25 can create either grooves or ribs to achieve the necessary profiling and register of variations. The longitudinal profile elements are designated with reference numerals up to 17, with the symbols 13 and 14 designating two side-by-side ribs. It is noted that in this profiling process the ribs, for example 13 and / or 15, remain within the envelope planes 25. If the key had all the ribs, then it would have a smooth surface, which should be avoided in practice.

Of course, the production of similar keys is based on a key blank that corresponds to the envelope planes 25 and either grooves or ribs are formed by removing or leaving the material at points 8-17.

Other systematics can be used to develop hierarchies in locks. For example, the key and the corresponding lock slot within the lock may have an invariable base profile and a variable profile that together form the overall profile, wherein both the base profile and the variable profile are divided into functional areas of the locking and unlocking key. Preferably, the profiles fit together so that at least one profile element of the base profile is disposed on each key wall between two profile elements of the variable profile.

This profile systematics is used in the manufacture of locks, especially when a high number of hierarchical steps is to be taken into account. In the manufacture of the individual profiles of the lock, for example, the profile elements 13, 10 and 15 on the key are formed as ribs, so that the basic profile of the lock consists of a theoretical basic profile 23 and the associated ribs.

8, 10 and 15.

All other profile elements 9, 11, 12, 13, 14, 16 and 17 are available for variations to create the necessary differences.

In this profile system, it is particularly advantageous that the basic profile of the entire lock is not apparent on a single key in order to make possible the imitation of a key. Furthermore, it is advantageous for the key to look complicated the higher its hierarchy. This makes it even more difficult to imitate and abuse it.

FIG. 3 is a cross-sectional view of a key and, in analogy thereto, a cross-section of a corresponding locking slot, the profile system of which is illustrated in FIG. 2, with an exemplary actual profile being indicated by thick lines. The figure is a cross-sectional view of the line III-III in FIG. 1 and thus goes through an additional profile groove 33 which is inclined to the longitudinal profile grooves of the key. The same elements have the same reference numerals in FIGS. 1 and 2.

As can be seen, the profile elements 12, 13 and 14 are designed as ribs. All other profile elements, and between them also profile elements 9 and 10, are designed as grooves that extend along the length of the key shank.

The cross-section of the profile groove 18 which extends obliquely over the key is trough-shaped, the profile groove in this embodiment being on both sides of the profile groove symmetry 22.

In order to create further variants, it is also possible to place the profile groove just above or below the symmetric and then remove it with the corresponding sensor elements.

As shown in FIG. 1, the profile groove is cut into both the longitudinally extending groove 8 and the groove,

that lies ood her.

Giant. 4 and 5 show a side view and a top view of a cylindrical core which is used in connection with the above-mentioned keys. The cylindrical core 26 has a lock slot 27 therethrough. The extension 28 protrudes from the lock body. The end 29 of the lock core is disposed within the lock and connects the pivotal movement of the lock core 26 (not shown) to a closure closure which cooperates with the door lock. This is all in the art.

The bore for the pins is indicated by position 30.

Roughly perpendicular to the lock slot 27, recesses 31 are provided in the core, which taper towards the lock slot 27 in the region 32. The upwardly extending recesses 33 occur in practice when using face milling cutters to form recesses 31 in the core. If other tools are used, this recess 33 may be omitted.

In the recesses 31 in the core there are sensing elements in the form of plates 34 as shown in Figs. 6, 7 and 8. At the end where the key is each of the plates has a sensing end 35 and on the other side a sealing extension 36.

The sensing end 35, viewed in the direction of arrow VII of FIG. 7, is formed as a more oblique extension, the inclination being arranged such that the sensing end 35 can enter into a correspondingly inclined profile groove 18, 19 or 20 with the correct key. it combines the manufacturing-technical advantage of axially aligned recesses 31 in the core with the oblique scanning of the oblique profile grooves.

FIG. 7 shows the profile rib symmetry 37 and three different embodiments of the sensing end are possible with respect thereto, as shown in FIGS. 8a to 8c. The sensing end 35 is either above or below or on either side of the profile rib symmetry 37. The embodiment of FIG. 8 only shows the cutting surface along the line VIII-VIII of FIG. 7 and not the remaining edges of the body. The closure extension 36 has a rounded wedge shape and slips into the O-shaped cylindrical core configuration of FIG. 9 into the notch 38 in the cylindrical receptacle 39. As can be easily seen in FIG. 9, the key 40 can be inserted into the lock slot without restraint. 27, since the plate 34 offers sufficient space to swivel into the notch 38. When the cylindrical core 26 is rotated, the closure extension 36 extends on the walls of the notch 38 and the plate 34 slides in the direction of the slot slot 27. When the key is properly shaped and has the correct profile groove 18 the sensor end 35 fits into the profile groove 16 and the plate lies entirely within the cylindrical core 26 so as to allow the cylindrical core to rotate. If an incorrect key is used, the sensing end 35 hits the key material and the closure extension 36 does not release the notch 38, so that rotation of the cylindrical core is not possible.

With respect to the number of variants, it can be stated that with each obliquely oriented profile groove an additional four variation possibilities are obtained. Fig. 3 shows three of these possibilities and the fourth variant consists in that the plate does not have a sensing end 35 so that there is no inclined profile slot on the key. The plate 34 prevents insertion of the body collar 41 into the recess 31 in the core when it rotates around the body stud 42. The core stud has a position 47. The arrangement of the inclined profile grooves does not affect the number of variants with respect to the longitudinal profile elements. Thus, the variants of the inclined profile grooves can be fully realized. If the profile grooves are only on one key wall, this number of profile element variants is increased by six. Five longitudinal profile elements on each key wall give 1024 options. Three additionally formed oblique profile grooves give about 64,000 variants with longitudinal profile elements.

Deviations from the illustrated embodiment are of course possible within the scope of the invention. On the key, the inclined profile grooves may cross one another, one of the two grooves being removed in the core. Thus several locks can close the same key.

The profile grooves 18, 20 preferably extend at most to the central cross-sectional line of the key profile or slightly shallower to prevent the key wall from breaking.

Giant. 10 is a side view of another embodiment of a key according to the invention. The inclined profile grooves 18, 19, 20, in contrast to the embodiment of FIG. 1, are inclined more towards the tip and partially overlap. The profile grooves 18 and 20 are thinner, while the profile grooves 19 have twice the width (see also FIG. 14). Fig. 11 is a section along line XI-XI. The edges of the longitudinal profile grooves 8, 11 are not shown here to make the picture clearer.

Giant. 12 and 13 are analogous to FIGS. 2a and 3. All profile options and and possible cross-sectional shapes of the inclined profile grooves 42.43 on the left and right key walls respectively are indicated. To remove such a key at all sensing points, both sides of the locking slot must be provided with corresponding plates.

The individual longitudinal profile elements are shown in FIGS. 12 and 13 as dimensioned as is most convenient in practice. A possible rib 44 is indicated by a hatched pattern. At position 45, two ribs are disposed side by side, which fill this key region up to the envelope 46.

In FIG. 14, four variants A) to D) are schematically shown for the cross-section of the inclined grooves 18, 19 and 20. In FIG. 10, the profile groove indicated by position 19 corresponds to variant B). The profile grooves 18 and 20 shown in FIG. 10 also correspond to either variant A) or variant D). Under C) a variant is indicated in which no inclined profile grooves are used and the plates 34 accordingly have no sensor ends 35.

The angle between the profile grooves 18, 19, 20 and the insertion direction of the key can be freely selectable and in the embodiment of FIG. 10 it is about 15 °.

15 to 20 show another embodiment of the key according to the invention and its associated lock.

Fig. 15 is a cross-sectional view of the end wall of the cylindrical shell. A key 52 is inserted in the lock slot, which pushes the core 47 down into the release position. The core pin 47 is guided in guide 51.

The plate 48 is biased in this example by making the tongue 50 in the direction of the slot 38. The plate 48 has a downwardly extending tongue 53 against which a compression spring abuts. To guide the tongue 53 and receive the spring 50, the receptacle is provided with a recess 49.

In the variation shown in FIG. 15, the plate 48 abuts the key material with its sensing end 54 so that the lock cannot be opened. Opening is only possible when the correct key is inserted, which has a corresponding profile groove for the sensing end 54.

Giant. 16 to 19 represent a variant of the plate 48. FIG. 17 is a cross-sectional view taken along line XVII-XVII in FIG. 16.

The sensing end 54 of the plate 48 has an inclined profiling that is complementary to the corresponding profiling of the inclined profile groove of the key. By way of example only, two grooves 55 and 56 and three ribs 57, 58 and 59 are shown. This inclined profiling may advantageously be the same or similar, both on the flat walls of the key lying the longitudinal grooves and the longitudinal ribs, as previously described. the base profile as well as the variable profile are distributed in the function of the locking and unlocking key regions, and the profiles fit together. The end cap is indicated by position 60 in these figures.

Giant. 20 is a side view of an exemplary embodiment of a key 52 in conjunction with the lock shown in FIGS. 15-19. The flat walls of the key are additionally provided with longitudinal grooves and longitudinal ribs at three points with oblique profile sections.

q with a plurality of grooves 61, 62, 63, which must be scanned by correspondingly provided plates 48 in the lock.

The profile grooves here have an angle of about 45 ° relative to the insertion direction of the key, but this is only an example.

In the previously described exemplary embodiments, there are several plates in the lock on at least one side of the lock slot, for example three plates 54 of Figs. 16 to 19, which correspond to the three angled groups of profile grooves 61, 62 and 63 of Figs.

20 May

In a preferred embodiment of Figs. 21 to 27, on one flat wall of the key (Fig. 26) there are two oblique groups of profile grooves 64, 65, which can be read together by a single plate 66, as shown in Figs. 21 to 23. The plate 66 comprises at two sensing ends 67 in all groups all inclined profile ribs 68 that are required to remove both groups of the profile grooves 64 and 65 of Figure 26. An impact rib 70 extends along one side of the plate 66 along the closure extension 69.

FIG. 24 shows a partial view of a cylindrical core 71 with a recess 72 in which a plate 66 fits. FIG. 25 is a cross-sectional view taken along line XXV-XXV of FIG. 24. The impact rib 70 of the insert 66 (FIG. 21, 22) prevents, in cooperation with the edge 73, deep insertion of the insert 66 into the cylindrical core as it moves inside the recess.

With respect to the previously illustrated embodiments, the function is easy to understand. When all the inclined ribs 68 of the plates 56 coincide with the inclined profile grooves of the two key profile grooves 64, 65 of the key of FIG. 26, the plate 66 can travel into the cylindrical core 71 so far that the locking extension 69 releases the corresponding groove in 71 can be rotated. This function is similar to what is shown in FIG. 9. If the key does not match the lock, the lock 69 remains at least partially engaged with the corresponding slot in the cylinder housing and the lock is locked.

Giant. 27 is a cross-sectional view taken along the line XXVII-XXVII of FIG. 26 and shows that the milling to form the oblique profile grooves 74 are circular and do not interfere with the upper edge of the key so that the upper edge 75 remains smooth.

Giant. 21 shows a further enhancement of the plate of FIGS. 21 to 23. In the central region with reduced cross-sectional measures, a slide 76 is provided whose two sidewalls 77, 78, which are shorter by approximately the width of the plate 66, engage sloped profile keyways.

With a properly manufactured correct key, the slide 76 strikes the flat wall 79 of the key so that its run-out end 82 fills the slot 83 and the box pin 84 arranged in this rotary plane is pushed over the slot 83. instead of inclined profile grooves and ribs, a longitudinal groove extends through the longitudinal groove, the slide 76 with its sensing end 81 engages in the key groove, so that the receptacle pin 84 engages in the cutout 83 when the cylindrical core 35 is rotated and the cylindrical core is engaged. This measure increases the security against the imitation of the key and eliminates the removal of the inclined profile elements due to one simple wide longitudinal groove on the key.

Referring to FIG. 29, the slide 76 does not have an impact rib 70. The receptacle pin 84 is configured to cooperate with the core pins in a known manner.

The cutout 83 is somewhat expanded to accommodate the box pin by an extension 86. On the other hand, a run-out surface 87 may be provided, which is hatched in order to allow the core to be reversed.

Giant. 30 is a cross-sectional view of one portion of a key 88 along an inclined profile groove 89. A rib 90 extends longitudinally in the region of the deepest recess, thereby increasing the stability of the key.

Industrial applicability

The keys contain both longitudinal and transverse grooves, and the corresponding locks are used wherever there is a need to increase the security of the locking and to reduce the risk of imitation of the key.

Claims (15)

A cylinder lock key having longitudinal ribs and / or longitudinal grooves on its flat walls extending in the direction of insertion of the key into the lock slot, characterized in that at least one flat key wall is additionally provided with at least one profile groove (18). 19, 20), the length of which is less than the length of the key shank (2) and which is arranged at an angle to the insertion direction (3) of the key. Key according to claim 1, characterized in that the profile groove (18, 19, 20) is cut through at least one longitudinal groove (8, 11). Key according to claim 1 or 2, characterized in that the profile grooves cut a section which corresponds to the cross-section of the longitudinal features (18, 19, 20) of the grooves (8 to 17). 4. Key according to claim 3, you brand c i se by that the profile groove (18, 19, 20) is e symetrá- 1e (22) of the groove arranged either above below ni or both sides. 5, Key according to any claim 1 to 4, v y z n ačujici se t í m, ž e are on the key orderly profile grooves (21), that they have due to insertion direction (3) different angular adjustment Key according to one of claims 1 to 5, characterized in that the longitudinal grooves (8 to 17) and the profile grooves (18, 19, 20) are arranged on both flat walls of the key. A key according to any one of claims 1 to 6, characterized in that it comprises a non-variable base profile and a variable profile which together form the overall profile and both the base profile and the variable profile are arranged in the effective area of the locking and unlocking key, the profiles intersect, so that at least one profile element of the base profile or the variable profile, respectively, is formed on each key wall between two profile elements of the variable profile or the base profile, respectively. Key according to one of the preceding claims 1 to 7, characterized in that at a plurality of, preferably two or three, sensing points on the flat wall of the key (52), the profile groove groups (61-65) are arranged at an angle to the insertion direction of the key. * Key according to claim 8, characterized in that the profile groove groups (61, 62, 63) form a profiling comprising a non-variable base profile and a variable profile which together form the overall profile and both the base profile and the variable profile are arranged. in the effective region of the key for locking and unlocking, wherein the profiles overlap, so that at least one profile element of the base profile and the variable profile, respectively, is arranged between the two profile elements of the variable profile and the base profile, respectively. Key according to one of Claims 1 to 9, characterized in that the obliquely disposed profile grooves (74) are trough-shaped and terminate in each case at an adjacent surface. a flat wall of the key, so edges upper edges (75) what they are smooth. 11. Key by one of previous claims, v y marking s e tim that in the area a longitudinal rib (90) is provided at the deepest recess of the inclined profile grooves (89) on the flat wall of the key. 12. A cylindrical key lock comprising sensing elements which sense the flat ends of the key wall with its locking extensions lying in the O-shaped lock core and in the slots in the cylindrical core receptacle and, when the cylindrical core is rotated with the correct key, and if the wrong key is used, they remain in the recess and thus prevent rotation, characterized in that the sensing elements are inserts (34, 38) that extend along the insertion direction of the key and the sensing ends (35) of these inserts are angled to the insertion direction and grooves of the corresponding key (40). Cylinder lock according to claim 12, characterized in that the sensing end (35) of the plate (34) is arranged above or below or on either side of the profile rib symmetry (37) or the sensing end (35) completely falls off, so that each the plate has four variant options. The cylinder lock according to claim 13, characterized in that the plate (48) or plates are arranged obliquely to the insertion direction of the key and analogous to the profiling of the groove groups (61, 62, 63), the profile grooves (55, 56) and profile ribs (57, 58, 59). Cylinder lock according to one of Claims 12 to 14, characterized in that the plate is resiliently biased in the direction (38) of the cylinder housing (39). A cylinder lock according to claim 15, characterized in that the plate has a tongue (53) for receiving a compression spring (50) which is supported on the cylindrical core (26). A cylinder lock according to claim 12, characterized in that on at least one wall of the lock slot in the cylindrical core (71), a single plate (66) is arranged in one recess (72) which has two groups obliquely at the sensor end (67). arranged ribs (68). A cylinder lock according to claim 16, characterized in that the plate (66) has a slide (76) which is displaceable relative to the plate and whose length is less than the width of the plate in the feed direction, the slide (76) striking when using the correct keys with its sensing end (81) on the flat wall (79) and fills its cut-out end (82) with the cutout (83) in the cylinder housing and drives the sensing end (81) into the key slot with its incorrect end of the recess (83), so that the prestressed receptacle pin (84) can enter the recess (83) and the cylindrical core (85) is blocked.