FI108807B - Electromechanical cylinder lock - Google Patents

Description

108807

ELECTROMECHANICAL CYLINDER LOCK - ELECTROMECHANICAL CYLINDER-LÄS

The invention relates to an electrochemical cylinder lock according to the preamble of claim 1.

The operation of the cylinder lock mechanism is known to be controlled by an electronic code provided from the key. For this purpose, a lock or similar may be provided in the lock which normally prevents the use of the key. Once the code entered from the key is identified as correct, the lock control logic causes the latch member to move to a position allowing the locking mechanism to be rotated, thereby opening the locking object. However, arranging the latch member in the lock body and controlling its movements require space and often also changes to the structure of the lock mechanism itself. The movement of the latch member also requires sufficient 1 5 powerful solenoids and electricity to supply it, which also complicates the structure and increases its cost.

It is an object of the invention to provide a new electromechanical cylinder lock, \, V wherein, as a result of the identification of the electronic code supplied by the key,? 20 available control of the members of the locking mechanism is implemented such that the solution:; j: is inexpensive in terms of space and cost and causes ;;; little changes to the locking mechanism itself. It is also an object of the invention to provide a solution in which the elements of the selected locking mechanism can be utilized without the need for separate latch members.

25. * ··. The object of the invention is achieved in the manner detailed in claim 1 and in the other claims. According to the invention, the lock comprises at least: ···, one hinge plate, the key opening of which is shaped such that the hinge plate is not directly mechanically affected by the rotation of the key. The lock also includes switching means for engaging said at least one baffle plate in a key rotation movement, wherein the electrical actuators of the lock are arranged to control said switching means so that said at least one baffle plate rotates with the key to a position required for unlocking.

2, 108807

Thus, according to the invention, the rotation of said special barrier plate occurs only in connection with 5 correct codes by utilizing a switching arrangement provided separately by the electric actuators. In the event of an invalid code, this special disruptor will not rotate at all, but will not prevent the key from being rotated. However, in this case, for example, in a cylinder locking mechanism with rotatable baffles, the conventional baffle bar itself prevents the locking mechanism from being opened with said various baffle plates.

Preferably, the lock body includes a continuously rotatable control unit with the key in which said electric actuators are arranged. The control unit is provided with a key channel having a cross section corresponding to the cut profile of the key shaft. Further, the control unit preferably comprises said means for receiving and identifying the key code.

In order to simplify the structure, the lock key is equipped with a power supply: and electrical contact means. In this case, said control unit ': 20 includes::: electrical contact means arranged to cooperate with the electrical contact means of the key, arranged in the correct electronic code of the key ;;; after detection, to power the key source electrical power to said electrical actuators. The electrical contact means of said control unit is preferably located inside the key channel.

25 ···. In order to ensure the uninterrupted operation of said at least one barrier plate, the freedom of rotation of the control unit and said barrier plate relative to the lock cylinder is limited, preferably to a maximum of the locking movement of the lock mechanism. In addition, the control unit may be provided with a projection or similar member acting on said baffle plate, which is arranged to reset said baffle plate together with the control unit and key 3 108807. Because of the forced return of the baffle plate, the power supply can be switched off already after opening the locking mechanism, which saves the batteries.

In a preferred embodiment of the invention, said electric actuators comprise electromagnetic means which function as said switch means. and said at least one baffle plate is of ferromagnetic material and located in the immediate vicinity of the control unit. In this case, the rotation of said barrier plate is thus achieved by means of electromagnetic means 10, which eliminates the need for a separate movable latch member, which is advantageous both for simplicity of construction and space utilization. The current required for electronic control thus implemented is also relatively small compared to conventional solutions.

In an alternative embodiment of the invention, said electric actuators comprise electromagnetic or similar coupling means which can be moved from their free, non-engaging position to an engaging position in which they are arranged to mechanically grasp said nuisance lever by rotating the control unit with a key. the baffle plate rotates with the control unit.

In a third embodiment of the invention, said at least one shark plate is provided with a spring-loaded switch member movable transversely to the rotational movement of the shield plate at two extreme positions where it protrudes from said shield plate. Herein, said electric actuators may be advantageously arranged to control the movements of said switch member to control the rotation of said damper plate.

• »

To provide said control, the electric actuators comprise an electric-magnet actuator 30 rotatable between two rotational positions such that in the second rotational position the actuator is movable along its axis of rotation, the actuator being arranged to cooperate with said switching member.

In this case, said control unit, which is continuously rotated with the key, preferably comprises a coupling hole or the like for said coupling member, which the coupling member tends to move under its spring, and furthermore said coupling hole is arranged at said actuating member.

The switch member is located at an initial position 10 corresponding to the key insertion position at a certain rotation angle from said switch cavity such that the switch member and the clutch cavity are aligned when the key is rotated in its lock from its initial position by said rotation angle, e.g. The lock further comprises a baffle located adjacent said at least one baffle plate on the side opposite to the baffle. The baffle plate is pivotally engaged with the lock cylinder and comprises a coupling recess in which the switch member is pressed against the force of its spring in the initial position of the key, thereby preventing the said baffle plate from being rotated. This is to ensure that, in this embodiment as well, the special badge disk does not rotate at all without the correct electronic .v code entering the lock, which controls the switching means to engage the special badge disk in the position required to open the locking mechanism. Since in this case: ·· '· the switching cannot be achieved in the initial position of the locking means, it is also possible to prevent any attempt of manipulation of the switching element when the key is not locked.

The invention can advantageously be applied to the so-called. with rotatable baffles ···. into the cylinder lock. In this case, the lock is provided with a plurality of mechanically rotatable baffle plates located within the lock cylinder and provided with a circumferential slot defining the lock combination. The locking means »· further comprise a bar which, in its locked position, together with the baffles, prevents the lock cylinder from rotating with respect to the lock body, and which is movable to its release, rotating position, by first opening the baffles with a key. In this case, said control unit is preferably disposed within the lock cylinder and comprises a groove corresponding to the peripheral slots of the baffle plates for the baffle bar. Hereby, the basic functions and components of a normal mechanical disc damper cylinder structure 5 can be utilized as advantageously as possible.

Some embodiments of the invention may also be utilized if the locking means defining the rotation of the lock cylinder relative to the lock body comprises a pin damper mechanism known per se. In this case, special locking cylinder anti-rotation means may be provided for the special shoe plate, or the side locking bar solutions used as additional security in many pin damper mechanisms may be utilized.

The invention will now be described, by way of example, with reference to the accompanying drawings, in which: Fig. 1 is an exploded view of an embodiment of an electromechanical cylinder lock arrangement according to the invention; Fig. 2 schematically illustrates operating principles of an electronic part of the arrangement; Fig. 4 shows an alternative embodiment of the electric actuators, - Fig. 4 shows a third embodiment of the cylinder lock arrangement according to the invention, in axial section of the cylinder, in the initial position, i.e. the key insertion position. 5, Fig. 5 is a section V-V of Fig. 4. Fig. 6 is a sectional view VI-VI of Fig. 4, - Fig. 7 is an enlarged sectional view VII-VII of Fig. 4, 6 108807 Fig. 8 is an axial sectional view of the locking bar with the key turned about 45 ° and no correct electrical code Fig. 9 is a sectional view XI-XI of Fig. 8, Fig. 10 is an enlarged sectional view XX of Fig. 9, Fig. 11 is an axial sectional view of the embodiment of Fig. 4 with the key turned about 45 ° and the correct electrical code given; Fig. 12 shows a partial sectional view XII-XII of Fig. 9 in enlarged position with the members in the operating position corresponding to the position of Fig. 11.

In the drawings, 1 denotes a cylinder lock lock body having a rotatable lock cylinder 2, which in turn encloses a plurality of baffles 3 and peripheral disks 4 having a circumferential slot 3a. The mechanism also includes a baffle rod 5 in its locking position partially in the slot 6 of the lock cylinder 2 (see Fig. 6), preventing the lock cylinder 2 from rotating with respect to the lock body 1 in conjunction with the baffle plates. The mounting of the lock cylinder 2 in the lock body 1 and the installation of the entire cylinder lock in its application is carried out in a manner known per se by means of means 30.

I I t • * · · »·

The lock plate package also includes, as illustrated in FIG. 1, a special baffle plate 9, which is ferromagnetic material in the embodiment of FIG. 1, and a continuous control unit 10 rotating with the lock key 7 comprising electrical actuators 17 (not shown in FIG. 1). These are also located. inside the lock cylinder 2.

, ···, The baffle plate 9 comprises a circumferential slot 9a and its key opening 9b is shaped so that it has no counter surface for the key, so that it cannot be rotated directly with the key> 30. Correspondingly, the control unit 10 is provided with a perimeter groove 10a corresponding to a normal circumferential hole and a key channel 10b whose cross section corresponds to the cross sectional profile of the key shaft 7a without the combination of locking opening surfaces. In addition, the control unit has mating surfaces 10c and the baffle plate 9 respectively have mating surfaces 9cf cooperating with the guide surfaces 2a of the lock cylinder 2 so that the pawn-5 of the parts 9 and 10 relative to the lock cylinder 2 corresponds to the angle of rotation The projection 10d in the control unit acts on one of the contact surfaces 9c of the baffle plate 9 and ensures that the baffle plate 9 always returns to its initial position while the control member 10 rotates with the key to its initial position.

10

In the embodiment of Figure 1, the electrical actuators 17 of the control unit 10 comprise electromagnetic means. When they are energized, a magnetic field acting on the defective plate 9 is also generated which, when rotating the control unit 10, also causes the deflection plate 9 to rotate the control unit 10 and the key 7 mu-15. Thus, when the lock key is turned on, the lock baffle plates 3, the control unit 10 and the baffle plate 9 are rotated to a position where the peripheral grooves 3a and 9a and the peripheral groove 10a are aligned to the slot 6, the baffle bar 5 The V opens, so that when the key is further rotated, the rotational movement can be transmitted through the locking cylinder »>» * · 20 as required by various applications. Locking mechanism; · When closing the key, turn the key in the opposite direction, thereby damaging the bar »;; 5 moves back to its locking position to prevent the lock cylinder from rotating.

The drawbacks 3 are restored by means of a separate restore ♦ t · bar 8 in the application of the figures. The operation of the basic mechanism is described in detail in U.S. Pat. No. 25,9452 (e.g., US 5,490,405).

In practice, the electromagnetic means of the control unit 10 is preferably a coil. (not shown in detail), whereby the magnetic force generated by the coil holds the baffle plate 9 in the lock when the key is turned. If there is no current in the coil 30, the baffle plate 9 does not rotate with the control unit 10 when turning it with the key. This is primarily due to frictional factors. However, even if the baffle plate 9 could rotate somewhat with the control unit 10, there would be no locking mechanism. opening, since this requires rotation of the baffle plate 9 by a full selection rotation to release the baffle bar 5. Similarly, when the key and thus the control unit 5 10 are rotated back to their original position, the projection 10d on the control unit also ensures that the baffle plate 9 returns to its initial position.

j

The lock and key comprise their own electronic components, the operation of which determines when the coil of the control unit 10 is energized, so that the cylinder lock mechanism of the sy-10 can be opened with a key with the right mechanical opening combination. This is illustrated in Figure 2.

The key 7 is provided with an electronic part 11 comprising means for storing and transmitting an electronic code and a battery or other suitable source of power (not shown). In the illustrated embodiment, the electronic code as well as the electric current are supplied via the contact means 12 in the key from the key to the control unit 10 to similar contact means 13 (not shown in Fig. 1, cf. 13 "cf. v. 4) located in key channel 10b therein. the electronics »*» · * 20 to the part 14 where the code recognition 15 takes place, whereupon the received code ;; · is compared to a pre-stored code or codes.

1 I I

In the event of the correct code being applied, the means 16 is coupled to the electromagnetic means belonging to the electric actuators 17 by means of means 16, thereby generating 25 a magnetic field acting on the baffle plate 9. The baffle plate 9 then rotates with the control unit 10 until the power is turned off, which would normally occur after the lock mechanism has been re-locked and the key is rotated to its initial position and removed from the lock. However, since the return of the baffle plate 9 is forced by the protrusion 10d of the control unit, the power supply can be cut off even after the lock mechanism has been opened, thus saving the batteries.

9 108807

If the code entered from the key is incorrect, no power is applied to the electromagnet means, and thus no magnetic field acting on the baffle plate 9 is created, so that turning the key in the lock does not result in the opening of the lock mechanism 5. In addition to the contact means 13, the electronic part 14 of the lock described above with its components can be conveniently and space-saving placed in the control unit 10.

The electronic key code can be entered in a variety of ways and techniques from 10 keys to a lock, and independently of the power supply as needed. This is especially true when the lock is equipped with its own power supply. However, the solution according to the embodiment shown can achieve a simpler and more space-saving cylinder lock structure.

By positioning the control unit 10 and the baffle plate 9 as shown on the end of the plate package, power and code input are simply provided at the root of the key shaft portion 7a. However, there is no principle obstacle to being placed elsewhere on the key channel of the lock. Likewise, a plurality of baffle plates 9 may be used, for example, placed on each side 20 or side by side of the control unit 10.

»· • I ·

Iti »;; In practice, the control unit 10, which can extend the length of the key channel from about 5 to about 6 mm, and the baffle plate 9 replace some of the conventional baffle plates so that the overall length of the disk package is not increased. As a result, the number of mechanical opening combinations is correspondingly reduced. However, when the available mechanical opening combinations are combined with a plurality of electronic codes, a multiple number of new key combinations are obtained, f $, ···. use. This adds to the magnetic control solution provided

»I

essentially both security of the lock mechanism and key security.

'! 30> * · »* 10 108807

In the embodiment of Fig. 3, the control unit 10 'and the baffle plate 9' with their mechanical members correspond analogously to the control element 10 and the baffle plate 9 and their members. However, the solution of Figure 3 differs from the solution of Figure 1 in that it comprises an electromagnet 18 'which directs the coupling member 5 19 to move axially depending on whether or not there is current in the electromagnet. This again depends on the code entered in the key. If the code is correct, the switching member 19 moves by the action of the electromagnet 18 'from the control unit 10' j to the protruding position in the opening 20 provided with the baffle plate 9 '. The rotating control unit 10' with the lock key rotates the baffle plate 9 '. The return of the coupling member 19 can be arranged in a number of alternative ways, for example, by reversing the polarity of the electromagnet, further utilizing a fixed magnet, or by purely mechanical arrangements. Otherwise, the operation of this solution corresponds to that of the solution of Figure 1. For example, the return of the baffle plate 9 'is forced by the projection 10d' of the control unit 15 '.

!

Since the coupling in the solution of Fig. 3 is mechanical, the baffle plate 9 'need not in this case be ferromagnetic material. The coupling member 19 itself may be: in practice, the anchor body of the electromagnet 18 ', which in size and mass; * 20 s favor is quite small. Therefore, its movement does not require a great deal of force, whereby the solenoid used can correspondingly be small, inexpensive and; 'Power saving even in this case.

* t

The embodiment according to Figures 4-12 differs from the above embodiment; 25, so that in this case the actuators 17 are "controllable" ** movable switching means for rotating the special baffle plate 9 "to the unlocking position of the locking mechanism in both the control unit 10" and the baffle plate 9 ". Another difference is that the engagement is only achieved when the key has already been rotated to some extent, for example about 45 °, provided, of course, that the correct electronic code has been entered into the lock.

11018807

Referring more particularly to Figures 4 to 7, the lock body 1 at the start of the key channel has a continuously rotating element 21 which defines the profile of a key suitable for the lock and at the same time acts as a drill guard for the lock. A guide plate 22 is disposed radially over the element 21, which is pivotally supported on the lock cylinder 2 and which supports and guides the baffle plate 9 ", thus remaining between the guide unit 10" and the guide plate 22.

For engaging the baffle plate 9 "in a key rotation movement, the control unit 10" has an actuator 10 actuated by an electromagnet 18 "of electrical actuators 17", whereby the control unit 10 "has a switch recess 24 provided with a bevelled guide surface 24a. The actuator 25 can be rotated from one position to another by rotating the 18 "polarity of the electromagnet so that at its second extreme position it can be pushed fully against the force of the spring 26 i within the control unit 10" as shown in FIG. The inner end 25a of the actuator 25 is suitably shaped for this purpose and furthermore the electromagnet body unit has stop members 27 (cf. Fig. 7) defining the rotation freedom of the actuator 25, preferably not more than 90 °. Further, the arrangement preferably comprises a permanent magnet '. v 28, which holds the actuator in a second position corresponding to the starting position 1 20 and thereby ensures that the actuator cannot be actuated by external magnetic fields or other disturbances, such as vibrations.

On the other hand, the baffle plate 9 "has a through hole 9d" having a coupling member 23 which can be pressed against the spring 29 so that it extends into the recess 22a in the baffle 22 25 and thus does not rotate (cf. Figs. 8 and 10). As shown in FIG. 5, in the starting position, the clutch member 23 and the recess 22a are located at a rotation angle of about 45 ° from the clutch cavity 24 and the actuator member 25.

! ·! * l i! The operation of the embodiment of Figures 4-12 is as follows. In the initial position of the mechanism in Figs. 4-7, with the key inserted into the key channel of the lock (for clarity, the key is not shown in the figures), the actuator 25 extends by a spring 26 over the clutch hole 24 against the baffle plate 9 ". the locking member 9 is held in position because the clutch member 23 is pressed by the control unit 10 "in a position where it extends into the cavity 22a of the guide plate (this position corresponds to that shown in Fig. 10). 24 and actuator 25. If the lock has not received the correct electrical code, rotation position of actuator 25 will not change. Thus, actuator 25 prevents clutch member 23 from moving into clutch cavity 24 and baffle plate 9 "remains in place with guide plate 22 (cf. Figs. 8-10). and the locking mechanism will not open.

10

Figures 11 and 12, in turn, illustrate the operation when the correct electrical code is entered in the lock. As a result of the code, a control command is obtained which changes the polarity of the electromagnet 18 ". The actuator 25 rotates 90 ° so that its end 25a is pressed against the force of the spring 26 by the clutch member 23 and its spring 29. 23 is released from recess 22a of the guide plate 22. As a result, as the key is further rotated, the baffle plate 9 "engages so that its circumferential slot 9a" shown in Figures 6 and 9 aligns with the damper: - · · gon 5 (not shown) - 20 it.

Unlike the embodiments of Figures 1 and 3, this embodiment has a disadvantage; restoring the vin 9 "does not require a separate projection 10d or 10d 'provided on the control unit 10", but the baffle plate 9 "rotates back under the action of the clutch recess 24 and the clutch member 23 to a position defined by the control surface 2a of the lock cylinder; where they are in the recess 22a of the baffle 22. Then, as the key is further rotated, the clutch member 23 moves into the recess 22a against the force of the spring 29 under the control surface 24a of the clutch recess 24 (cf. Figures 12 and 10) and prevents rotation of the baffle plate 9 "as the key is rotated again. the spring 26 pushes the actuator 25 out against the baffle plate 9 ", whereupon the actuator 25 rotates back to the initial position of Fig. 4 due to the reversed polarity of the electromagnet 18".

13108807

The operation of the actuating member 25 does not necessarily require a separate spring 26, but the corresponding operation may be achieved by appropriate design of the head 25a and associated body counter-surfaces.

In addition to the lock mechanism illustrated in more detail in Figure 1, the solution j of the invention can of course also be applied to a number of other cylindrical locking mechanisms based on rotatable barrier discs 10, such as a conventional cylinder lock mechanism not using a reset bar 8 but directing the lock key tumbler mechanisms.

The invention can also be applied to completely different types of cylinder lock mechanisms such as so-called cylinder lock mechanisms. tumbler locks. Since in this case the lock cylinder is not hollow in the same way, the control unit and the special baffle plate must be located outside the lock cylinder at its end. In addition, a separate locking member arrangement is required for the special baffle plate, for example a member corresponding to the bar, which acts on both the control unit and the special bar so that it does not allow the lock cylinder and control unit to rotate to the end required by the particular application. , by the selected rotation angle. Thus, even in this case, a key with the correct mechanical opening combination cannot: · · · · · · · · · · · · · · · ·:: even though the lock cylinder could be somewhat * ”[: circulated before the correct electronic key code is entered and consequently the power supply to the electromagnetic means connected, whereby the special baffle plate rotates with the key and control unit to a position where the respective baffle bar or the like is released and allows further rotation.

30

Claims (16)

An electromechanical cylinder lock comprising a lock body (1) and a lock cylinder (2) rotatable therein, and a locking mechanism comprising locking means which normally prevent the lock cylinder (2) from rotating with the lock body (1) and movable by the lock key (7). in a releasing position allowing the locking sleeve to rotate (10), wherein the lock key (7) further comprises means (11) for transmitting an electronic code and the lock respectively being provided with means (13,14) for receiving and recognizing the key code and actuated electric actuators (17,17 ', 17 ") such that, in the event of a correct code, said means (13,14) are arranged to activate said electrical actuators (17,17', 17") and thereby enable the lock to be unlocked mechanically with a key (17,17 ', 17 "). 7), characterized in that the lock comprises at least one baffle plate (9,9 ', 9 ") having a key opening (9b, 9b') , 9b ") is shaped such that rotation of the key does not directly mechanically affect the barrier panel (9,9 ', 9"), that the lock includes switching means for engaging said at least one barrier panel (9,9', 9 ") , and that said electric actuators (17,17 ', 17 ") are activated, respectively,. arranged to control said coupling means such that said at least one baffle plate (9,9 ', 9 ") rotates with the key to the position required for unlocking the locking mechanism. Cylinder lock according to Claim 1, characterized in that the lock body (1) has a continuously rotatable control unit (10,10 ', 10 "), in which said electric actuators (17,17', 17") are arranged: v; ty. 30 15 108807 Cylinder lock according to Claim 2, characterized in that the control unit (10,10 ', 10 ") is provided with a key passage (10b, 10b', 10b") having a cross section corresponding to the cross sectional profile of the key shaft (7a), and 10 ', 10') further includes said means for receiving and recognizing a key code (13,14). Cylinder lock according to Claim 2 or 3, characterized in that the lock key (7) is provided with a power supply (11) and electrical contact means (12) and that said control unit (10,10 ', 10') includes electrical contact of the key (10). 12) co-operating electrical contact means (13) arranged after the correct electronic code identification of the key to power the key electrical source (11) to said electrical actuators (17,17 ', 17 "). Cylinder lock according to Claim 4, characterized in that the electrical contact means (13) of the control unit (10,10 ', 10 ") is located inside the key channel (10b, 10b', 10b"). Cylinder lock according to one of the preceding claims, characterized in that the control unit (10,10 ', 10 ") and said at least one baffle plate (9,9', 9") have limited freedom of rotation with respect to the lock cylinder (2). Cylinder lock according to any one of the preceding claims, characterized in that the control unit (10,10 ') is provided with a projection (10d, 10d') or the like on said baffle plate (9,9 '). ) with an active member arranged to reset said barrier plate (9,9 ') together with the control unit (10,10') and the key (7) to the initial position of the locking mechanism. Cylinder lock according to one of the preceding claims, characterized in that said electric actuators (17) comprise electromagnetic means and in addition said at least one baffle plate (9) is of ferromagnetic material and is located in the immediate vicinity of the control unit (10). 16 108807 Cylinder lock according to one of Claims 1 to 7, characterized in that said electric actuators (17 ') comprise coupling means (19) operating on an electromagnet (18') or the like which can be moved from its free, non-engaging position to its engaging position, wherein they are mechanically arranged to engage said baffle plate (9 ', 20) such that, with a key (7), while rotating the control unit (10'), said baffle plate (9 ') rotates with the control unit 10 (10'). Cylinder lock according to one of Claims 1 to 6, characterized in that said at least one baffle plate (9 ") is provided with a spring-loaded coupling member (23) movable transversely to the rotational movement of the baffle plate (9") between the two extreme positions protruding from said baffle plate (9 "), and that said electric actuators (17") are arranged to control the movements of said switch member (23) to control the rotation of said baffle plate (9 "). Cylinder lock according to claim 10, characterized in that said electric actuators (17 ") comprise an actuator (25) actuated by an electromagnet (18") or the like which is rotatable in two rotational positions · ·. sometimes such that in its second rotational position the actuator (25) is movable along its axis of rotation, and the actuator (25) is arranged to co-operate with: ... 25 to control the rotation of said baffle plate (9 ")." . Cylinder lock according to Claim 11, characterized in that said control unit (10 ") which is continuously rotated with a key comprises, for said coupling member (23), a coupling recess (24) or the like to which the coupling member (23) tends to move. (29), and that said clutch recess (24) is arranged at said actuator (25). Cylinder lock according to Claim 12, characterized in that the coupling pin (23) is located at an initial position corresponding to the key insertion position at a certain rotation angle from said coupling slot (24) such that the coupling member (23) and the coupling slot (24) are aligned. rotated from its starting position by said rotation angle, for example about 45 °. Cylinder lock according to one of Claims 10 to 13, characterized in that the lock comprises a baffle plate (22) adjacent to said at least one baffle plate (9 ") on the opposite side of the baffle unit (10") and that the baffle plate (22) coupled to the lock cylinder (2) and comprising a coupling recess (22a) into which the switch member (23) is pressed against the force of its spring (29) in the initial position of the key 15, thereby preventing rotation of said baffle plate (9 "). Cylinder lock according to one of the preceding claims, which lock cylinder (2) has an axial slot (6) and is provided with a plurality of mechanically rotatable baffle plates (3) located inside the lock cylinder (2) with the lock key (7). provided with a circumferential slot (3a) defining the lock combination, the locking means further comprising a drawbar (5) which; in its locked position together with the baffle plates (3) prevents rotation of the lock cylinder (2) with respect to the lock body (1) and is movable to its release position 25 by rotating the baffle plates (3) first with a key position where their circumferential holes (3a) at the bar (5) and said slot (6) of the lock cylinder, characterized in that said control unit (10,10 ', 10 ") is located inside the barrel (2):>! · and comprises peripheral slots (3a) of the barrier plates (3a). corresponding groove ·.: 30 (10a, 10a \ 10a ") for the locking bar (5). is 1 08807 Cylinder lock according to one of Claims 1 to 9, characterized in that the locking means defining the rotation of the lock cylinder (2) with respect to the lock body (1) comprises a pin damper mechanism known per se. 5 MAINTENANCE SCRAP