FI114329B - Harmful Disc Lock Key combination and the associated key and its blank - Google Patents

Abstract

A combination of a disc tumbler lock and a key (8) therefor provided with key-bit means (8b, 8c), the lock including a lock case (1) having therein a lock bolt (3) movable back and forth and provided with a locking pin (4) or the like and a set of tumbler discs (5) movable by turning the key and which are provided with a locking channel arranged to co-operate with the locking pin (4) to control the transfer movements of the lock bolt (3). The locking channel has at least a first (5a) and a second (5b) branch extending transversely relative to the transfer movement of the lock bolt and a third branch (5c) connecting the first and second branches, whereby the key-bit means (8b) of the key has for each tumbler disc a combination surface (8c) which, when the key is turned in the lock, moves the tumbler disc (5) in the direction of the first (5a) and second (5b) branch to select the locking combination. The key-bit means (8b) contains a guide member (8d) which affects the lock bolt (3) so that, in the final stage of the selecting movement of the tumbler disc (5), it guides the locking pin (4) into the third branch (5c) of the locking channel. The third branch (5c) of the locking channel also has at least one guiding means (5f,5g) which is arranged to prevent movement of the locking pin (4) through the third channel (5c) if the combination surface of the key is incorrect. <IMAGE>

Description

114329 HAIRLOCK LOCK - KEY - COMBINATION AND RELATED KEY AND ITEMS -

TILLHALLARLAS - NYCKEL - KOMBINATION OCH DÄRTILL TILLHÖRANDE 5 NYCKEL OCH DESS NYCKELÄMNE

The invention relates to a malicious disk lock key combination according to the preamble of claim 1, a key for the combination and a blank thereof.

The inventive drawbar locks are generally used in doors as security locks. As the market grows, a large number of additional key options are needed. In principle, this can be accomplished, for example, by increasing the number of baffles or the number of stepping alternatives, or combination values, for combination surface milling. However, the size of both the key and the lock must be kept within a reasonable range, and reducing milling increments can in turn cause malfunctions and malfunctions.

It should also be as difficult as possible to tune the locks. The deflection channel of the baffle plates used in these locks comprises a branch which traditionally connects the locking legs 20, which is straight and extends parallel to the displacement movements of the axle.

:! 1: In this case, when tapping the lock, it is sufficient that the baffle plates are arranged so that the said connecting branches of the niche channels of the n ·: ··· are located at the locking pin.

: The bolt can then be pushed into its unlocked position by moving the locking pin · · 1. directly through the branch in question. To prevent tampering, it is known to provide the locking arms of the damaging channel with various recesses which can be engaged by the locking pin when searching for the correct position of the damage plates. This will at least make it difficult to sense the * 1 · position of the discs.

;;; It is an object of the invention to provide a new combination of malicious disk keys, which allows for a large number of new key alternatives and with which the tampering of the lock *: can be more reliably prevented.

• »• · 2 114329

The object of the invention is achieved as set forth in claim 1 and other claims. According to the invention, the key blade comprises a guide element which, at the final stage of the movement of the damper plate, acts on the tongue to guide the locking pin to said third branch of the damper channel. In addition, said third branch of the drawbar comprises at least one guide means for controlling the locking pin simultaneously with the displacement of the axle and the selection movement of the drawbar. Since, according to the invention, moving the locking pin to the branch between the locking legs of the locking channel and at least in the initial phase of locking pin movement requires simultaneous movement of the locking plate, the peer-to-peer method of alternating the locking locking plates does not work in this case. The solution can also functionally eliminate the keys of similar old locking systems which require the selection of the baffle plates first and then the displacement of the bolt and the locking pin thereon. This gives you a whole new set of key combinational options.

In practice, said third branch of the defect channel preferably comprises a guide surface inclined with respect to the displacement of the axle arranged to cooperate with the locking pin. In addition, said third branch of the obstruction duct may comprise: 1:: 20 a channel limiting projection disposed on said oblique guiding side of said third branch and in conjunction with said guiding surface. locking pin and guiding it in the direction of the · · · · · · · · · · · · · · · · · · · · · · · · · · - 1 - 1 selective movement. Thus, even if the locking pin could be successfully moved to the respective third leg of the damper channels of all the discs, said projection prevents the locking pin from being moved further in that leg unless * · · all the discs are moved correctly at the same time.

The various key combinations can advantageously be provided by varying the shape and / or size of said control means • · · 30 of said damaging channel of the third disk. Hereby, the shape of the corresponding combination surface of the key can be altered accordingly so that a specific shape of the combination surface provides operative compatibility of the locking pin only with a malfunction channel with control means of a certain shape and / or size.

The deflection channel may also comprise, in a manner known per se, a fourth branch extending transversely to the axle displacement movement and a fifth branch connecting said second and fourth branches. Hereby, said Fifth leg also comprises said control means for guiding the locking pin. As a result, two consecutive key-driven dials are required to unlock the lock, which increases the number of alternative combinations and improves anti-tampering capabilities.

In practice, a locking pin which is preferably compatible with said limiting members and guiding surfaces is obtained if the locking pin has a triangular cross-section in the direction of the movement of the baffle plate.

15

The blade of the key blank according to the invention is provided with a guide member which extends outwardly from the plane surface of the leaf and is arranged to move the lock bolt and thus the locking pin even before the lock movement of the locking discs is completed. The key blade leaf preferably has a second guide member disposed symmetrically to said first guide member. The key blade may further comprise two leaf sections located symmetrically on both sides of the key blade handle.

The leaf of the key according to the invention is correspondingly provided with a guide element ... 25 which extends outwardly from the plane surface of the leaf and is arranged to move the lock bolt and thus the locking pin even before the end of the locking discs selection movement. · where from. The combination surfaces which cause said selection movement of the discs are arranged on the key leaf in the direction of the key shaft on either side of said control member. If there is an equal number of combination surfaces on each side of the control element 30, the key can advantageously be used on both sides of the lock.

4, 114329

The key leaf also has a control surface independent of said control member for providing axle displacement movements after the locking combination selection movement. Said guide surface and said guide member are arranged in the same cross-sectional plane with respect to the key shaft 5.

The number of available locking combinations can be substantially increased if at least two different combination surface types can be selected as the combination surface provided for a single key board. These combination surface variants can be arranged to be functionally incompatible with the secondary plate, respectively, since compatibility with the secondary plate only requires that certain changes to each of the combination surface types have been made to the secondary plate. The key combination surfaces can then be selected to handle either of the combination surface types, or any combination thereof.

Advantageously, said combination surface types may include planar milling: T: and a tapered milling surface formed by two oppositely inclined faces. In practice, the key blade preferably comprises at least one combination surface which in the perpendicular cross-sectional plane of the key shaft comprises this tip formed by opposed bevelled surfaces. Mixing different combination types makes it difficult to * * · * 'remember the key combination values and thus make the key unauthorized ... 25.

»· ·

The number of combination alternatives can be further multiplied if the *,. * Key comprises two leaf sections with combination surfaces located symmetrically on both sides of the key blank arm. In this case, the com- bination surfaces of the leaf sections may differ at least in part with respect to the value of the milling or the type of combination surface.

5, 114329

The invention will now be described, by way of example, with reference to the accompanying drawings, in which: - Figures 1-6 illustrate a lock according to the invention in various operating positions, viewed from the side and the body lid open; Fig. 8 illustrates various combining milling alternatives of a lock key, and Fig. 9 shows a section IX-IX of Fig. 8.

In the drawings, 1 denotes a lock body to be mounted on a door or the like, having a bracket 2 and a bolt 3 movable with a lock key 8 between the recessed locked position and the retracted release position. For this purpose, the lock body 1 preferably has a keyhole 1b.

The lock body 1 is provided with a plurality of baffle plates 5 separated from one another

I I I

t '· with spacers 7 and having a plurality of branching passageways for locking pin 4 on axle 3. In order to control the movements of the locking pin 4 and thus the bolt 3, the lock i *: is provided with a guide groove 1a. As shown in more detail in Fig. 7a, the disadvantageous 1 · '· * channel in the illustrated embodiment comprises locking arms 5a, 5b and 5d and t 4 connecting them 5c and 5e. As the locking pin 4 moves through the arms 5c or 5e, the bolt 3 simultaneously moves from one position to another. The branch 5c is provided with a sloping guide surface 5f and a guide projection 5g, and the branch 5e respectively is provided with a sloping guide surface 5i and a guide projection 5h which control the displacement of the locking pin 4 as illustrated in Fig. 7b. In practice, due to the guide groove 1a, the displacement of the bolt 3 and the locking pin 4 are straightforward, so that the displacement of the bolt 3 requires corresponding movements of the baffle plate 5, respectively. The deflection channel 30 can also be provided with recesses 5j which, together with the recess 4a of the locking pin 4, make it difficult to sense the position of the deflection plates and thus also to tease the lock.

6 114329

8 and 9, the key 8 has combination surfaces 8c (8c1, 8c2, etc.) for each baffle plate 5, respectively, and the baffle plates 5 comprise a counter surface 5k for key combination surfaces. As the key 8 5 is rotated in the lock to select the lock combination, the baffle plates 5 in Figures 1-6 are moved upwardly, controlled by the pins 9a and 9b of the lock body against the force of the springs 6. The combination surfaces are milled into the key blade which has two keys, 8b 1 and 8b2. These, together with the three locking arms 5a, 5b and 5d of the damper channel, provide the axle 3 with two protruding positions of different lengths obtained by two successive selection movements of the key plates 8 of the key.

Referring to Figs. 1, 8 and 9, key blade members 8b 1 and 8b2 are further provided with guide members 8d (8d11, etc.) acting on guide surfaces 3a1, 15 3a2, 3b 1 and 3b2 of axle 3 to move axle 3 during , that the locking pin 4 is guided to a branch 5c or a branch 5e, respectively. Further, the key blades are provided with guide surfaces 8e1 and 8e2 to effect actual displacement movements of the axle 3 after the locking combination selection movement. To this end, the shaft 3 has guide surfaces 20a3 and 3b3.

The operation of the lock is as follows. In the starting position of Fig. 1, the bolt 3 is in its outwardly extended position, with the locking pin 4 in the damaging channel 5a of the damaging plates 5. As the key 8 is rotated in the lock, the key combination surface assembly 8c1 of the key contacts the contact surface 5k of the barrier plates, whereby the barrier plates 5. ·; ·. move upward in the figures against the force of the springs 6. At the same time, the relative position of the locking pin 4 in the locking leg 5a changes. After this, the discs 5 »·] ···. in the final stage of the selection movement, the key control projection 8d12 hits the axle control

t I I

surface 3a 1 and begins to move the bolt 3 to the right in Figure 2 at the same time as' *. The baffle plates 30 move as displaced by the key combination surfaces. As a result of the combination of these movements, the locking pin 4 is first guided to the damper channel claw 7c and further forward until the damper plate selection movement is completed, provided that the corresponding combination surfaces of the key are correct. Thus, in the situation of Figure 3, the key control surface 8e1 acts on the mating surface 3a3 of the bolt and moves the bolt forward while the locking pin 4 moves in the branch 5c 5 below the guide projection 5g. However, the locking pin 4 can only be moved through the leg 5c by the correct combination of the above movements. For example, if the selection of the baffle plates had already been completed, the control projection 5g would prevent the locking pin 4 from moving in the baffle branch 5c. Correspondingly, the guide surface 5f prevents the locking pin from being displaced by the defect channel branch 5c in the event that the corresponding combination surface of the defect plate is either of incorrect combination value or of a combination surface type.

In the situation of Fig. 4, the locking pin 4 has already moved to the locking leg 5b of the malfunctioning channel. In this case, the baffle plates 5 move downwardly under the pressure of the spring 6, while their guide surfaces 5k and the combination surfaces 8c1 remain in contact with each other. At this point, the guide member 8d11 on the other side of the key blade portion 8b 1 acts on the guide surface 3a2 of the shaft and the guide surface 8e1 of the key respectively on the guide surface 3a1 of the shaft so as to drive the tampering slot 5j past the locking pin 5b. As a result, as the key 8 is further rotated, the locking pin 4 can move to the end of the locking leg 5b as shown in Figure 5.

Moving the bolt 3 and the locking pin 4 from the position of Fig. 5 to the position of Fig. 6, with the bolt fully retracted and the key removed from the lock, occurs above. 25, by turning the key 8 further by turning sa -: 'j'; in the direction of the earth. Similarly, when moving the tongue 3 back to the protruding position, the above operations take place in reverse.

As can be seen in particular from Figures 7a and 7b, there is a slight difference between the deflector guide pins 5f and 5i and the guide projections 5g and 5h. Correspondingly, the combination values of the opposite sides of the key blades of the key of Figs. 1-5 are different from each other (cf. Fig. 9). In this way, for each combination value, two different combination surface shapes can be used for key combination surfaces, the compatibility of which with the exact location of the abovementioned guide surfaces and guide projections and, if necessary, only with a certain type of control surface shape and control projection. This is based on the fact that the differing combination 10 surface types shown at the end of the selection movement cause a slightly different movement. The various combination surface options are shown schematically in Figures 8 and 9.

Because in the embodiment shown, the two key blade portions 8b1 and 8b2 15 provide two different selections of baffle plates, one for each axle output end, thus providing a huge number of different locking combinations. For example, assuming that it is a symmetrical lock, so that the key can be pushed into the lock on both sides, and that: the key has two opposing key leaf sections that have * * 20s combination surfaces for eight hinged boards, each with a combination of · · · ' ·· *: four different combination values can be given to the surface, which in turn can be used with two different combination surface shapes, theoretically giving 16777216 different lock combinations. Of these, at least 1005480 combinations can be practically applied. Correspondingly, in the case of an asymmetric lock 25, substantially larger quantities are reached.

The invention is not limited to the embodiment shown, but a number of variations] ···. is contemplated within the scope of the appended claims.

• · · • I «

Claims (15)

1. Keeper read-key combination, where belongs to a reading housing (1) and therein one with a key (8) intermittently removable, with a welding pin (4) or similar provided rule 5 (3) and a plurality of key removable discs (5), which is provided with a latch channel arranged for cooperation with said welding pin (4) for controlling the displacement movements of the rule (3) and comprising at least as far as the displacement movement of the rule is a transverse first (5a) and second (5b) branch. and these joining third branch (5c), where one ax (8b) comprises for each locking disc a combination surface (8c) which, during rotation of the key in the reading, moves the locking disc (5) in the direction of said first (5a) and second ( 5b) the means for selecting the reading combination, characterized in that the axle (8b) comprises a control element (8d) which actuates the rule (3) so that it controls the locking channel of the reading pin (4) simultaneously in the final stage of the locking disc (5). 15 mentions the third branch (5c), and the said third branch (5c) of the locking channel comprises at least one control instrument (5f, 5g) which is arranged to allow the displacement of the reading pin (4) to the said third branch (5c) before the selection movement (5) ) and / or through it only if the corresponding combination area of the key is correct. 20 Combination according to claim 1, characterized in that the locking channel's name: ·:. The third branch (5c) comprises a guide surface (5f) which is arranged in relation to the offset movement of the rule, which is arranged for cooperation with the welding pin (4). »» * ·> Combination according to claim 2, characterized in that said third branch (5c) comprises a channel limiting projections (5g) arranged on the opposite side of said third branch (5c) in relation to said third branch (5c). oblique guide surface (5f) and together with said guide surface (5f), the welding pin (4) pervades and guides it in the direction of the selection movement of the locking disc (5). Combination according to any one of the preceding claims, characterized in that the shape and / or size of said control instruments (5f, 5g) of said third branch (5c) at the locking channel of the locking disc is adapted to change and that the shape of the corresponding combination surface of the key (8c) is arranged to be altered in a corresponding manner such that the combination surface (8c) of a certain shape 14 provides a functional compatibility between the reading pin (4) and with the locking channel (5c) provided with control instruments (5f, 5g, 5h 5i) of only a certain shape and / or size. Combination according to any of the preceding claims, characterized in that the locking channel comprises in a manner known per se a fourth branch (5d) extending transversely of the displacement movement of the rule (3) and a fifth branch (5e), which the said second (5b) and fourth (5d) branches join and said fifth branch (5e) further comprises said control instrument 10 (5h, 5i) for controlling the reading pin (4). Combination according to any of the preceding claims, characterized in that the reading pin (4) has a triangular cross section in the direction of the selection movement of the locking disc (5). Key blank for a combination according to any preceding claim, characterized in that the shaft (8b) is provided with a control instrument (8d) which extends outwardly from the plane surface of the shaft and which is arranged to displace the reading rule (3) and thus the reading pin. (4) even before the selection movement of the pulleys (5) stops. Key element according to claim 7, characterized in that on the other side of the ax. another control instrument (8d) is arranged which lies symmetrically in relation to said first control instrument (8d). 25 Key blank according to claim 7 or 8, characterized in that it comprises two axle parts (8b1, 8b2) which lie symmetrically on both sides of the key member shaft (8a). , 30 10. A key is milled by a key blank according to any of the preceding claims 7-9,. Which is intended for a combination according to any one of the preceding claims 1-. . 6, characterized in that the shaft (8b) is provided with the control instrument (8d), which extends outwardly from the plane surface of the shaft and which is arranged to displace the reading rule (3) and thus the reading pin (4) even before the selection movement of the reading lock. 35 discs terminate and the combination surfaces (8c) of the latching discs (5c) which are in said selection motion are disposed on the shaft (8b) in the direction of the key shaft (8a) on both sides of said control instrument (8d). Key according to claim 10, characterized in that the axle (8b) comprises a guide surface (8e) independently of the said control instrument (8d) for effecting the displacement movements of the rule (3) after the selection movement of the reading combination and the said control surface (8e) and said control instruments (8d) are arranged at the same cross-sectional level relative to the shaft of the key (8a). 10 12. A key according to claim 10 or 11, characterized in that for a combination surface (8c) for a single locking disc (5) of a key, alternatively, at least two different types of combination surfaces can be selected, the shape of which deviate from each other and which are arranged. to be functionally incompatible with the lock screen (5) of the second alternative and that the combination surfaces (8c) of the key are selected to comprise the nondescript type of combination surfaces or any combination thereof. 13. A key according to claim 12, characterized in that said types of combination surfaces belong to the milling (8c 111, etc.) of flat surfaces and to a tapered milling surface formed by two inclined surfaces arranged against the tip of the axle. » A key according to claim 12 or 13, characterized in that the axle (8b) comprises at least one such combination surface (8c), which at a vertical cross-sectional level of the key shaft (8a) comprises a tip (8c112 etc.) formed of opposite slanting surfaces. Key according to any of the preceding claims 10-14, characterized in that it comprises two axes (8b1.8b2) provided with combination surfaces which lie symmetrically on both sides of the key blank's shaft (8a) and that the combination surfaces (8a). 8c1.8c2) of the axes (8b1.8b2) are mutually at least partial; show deviation from each other regarding either the value of milling or the type. of combination surface.