ES2916599T3 - Lock device with tamper protection device and key - Google Patents

Abstract

Lock device (10) comprising a lock cylinder (20), a key (50) and a tamper protection device, wherein the lock cylinder (20) has a cylinder core (30) mounted on a casing (40), in which a separation gasket (25) is formed between the casing (40) and the cylinder core (30), in which the tamper protection device is a perforation protector and/or a protector and has at least two guard pins (35), which are movably stored respectively in a guard pin channel (41), where the guard pin channels (41) have a housing section (45) and a cylinder core section (46), wherein in a locking position of the locking device (10), the protection pins (35) are arranged at least in sections in the housing sections (45) in such a way that the separation joint (25) is locked, and to achieve a position open of the lock device (10), the protection pins (35) are able to move completely towards the cylinder core sections (46) due to a reversible key (50) that can be inserted into the cylinder core (30). ) and to at least two magnetic elements formed on or in the key axis (52) of the key (50) (60) and the separation joint (25) can be unlocked, - where the locking position refers to the state fully closed of the lock device (10) and to the state if the key (50) has not yet been fully inserted into the key channel (32), - wherein the at least two magnetic elements (60) are formed on one end of the key shaft (52) facing a key head (51), - where the protection pins (35) can only move into the key channel (32) after almost complete insertion of the key shaft (52), - where the protective pins (35) are not coding elements, - where media A first protective pin is prestressed by a spring (28), it is inserted into the cylinder core section (46) of the first protective pin channel (41) and the pretension acts in the direction of the housing section (45). of the first channel of the protective pin (41), - where no spring is inserted into the other channel of the protective pin (41)

Description

DESCRIPTION

Lock device with tamper protection device and key

The invention relates to a lock device comprising a lock cylinder, a key and a tamper protection device, in which the lock cylinder has a cylinder core mounted in a housing, in which a gasket is formed clearance between the cylinder casing and core.

Numerous keys and lock systems are known in the state of the art which are designed in the sense of greater security against break-in. For example, from publication DE 69904408 T2 a key with a movable pin is known, as well as a security rotary cylinder and a lock equipped with these. Other examples of locking devices with magnetically operated protective pins are known, for example, from publications US 4 627 251 A, WO 03/054330 A2, EP 2 886 754 A2, FR 2 384 926 A, CN 201972462 U and CN 106703521 To acquaintances.

According to the solution there, a key must be specified for a security rotary cylinder, in which a movable latch makes it difficult to copy a key equipped with it and gives the user greater security.

Since criminals are constantly developing new ways to manipulate lock systems, it is necessary to constantly continue to develop keys or lock systems. In particular, tamper protection devices in the sense of puncture protection and/or removal protection must be constantly further developed.

From the foregoing, it is an object of the invention to specify a further developed lock device having a lock cylinder, a key and a tamper protection device.

The achievement of the objective is carried out in relation to a lock device comprising a lock cylinder, a key and a tamper protection device, according to the combination of features according to claim 1.

The independent claims include at least suitable configurations and improvements.

According to the invention, according to claim 1, it is a lock device comprising a lock cylinder, a key and a tamper protection device, in which the lock cylinder has a cylinder core mounted in a housing , in which case a separation joint is formed between the cylinder casing and the cylinder core,

where

the tamper protection device is a drilling protection and/or a removal protection and has at least two protective pins, each of which is mounted in a movable protective pin channel, wherein the protective pin channels have a housing section and a cylinder core section, wherein in a locking position of the locking device the protective pins are arranged at least in sections in the housing sections so that the separation joint is locked, and to achieve an open position of the lock device, the protective pins can be fully moved in the cylinder core sections due to a reversible key that can be inserted into the cylinder core and at least two magnetic elements, formed on or in the shaft of the key and the separation joint can be unlocked,

- where the lock position refers to the fully closed state of the lock device and the state in which the key has not yet been fully inserted into the key channel,

- wherein at least two magnetic elements are formed at one end of the key shaft facing a key head,

- where the protective pins can only be moved after almost complete insertion of the key shaft into the key channel, - where the protective pins are not coding elements,

- wherein a first protector pin is prestressed by means of a spring, is inserted into the cylinder core section of the first protector pin channel and the pretension acts in the direction of the housing section of the first protector pin channel,

- where no spring is inserted into the channel of another protective pin.

Due to the formation according to the invention of the lock device, an effective tamper protection device is provided so that the security of a lock device can be increased.

For example, the respective protective pin has a round cross section. In a preferred embodiment of the invention, the respective protective pin is made of steel. In a particularly preferred embodiment of the invention, the at least one protective pin is made of a hardened steel.

Furthermore, it is possible that the respective protective pin essentially consists of two basic sections. The first section is preferably the section of the protective pin, which is formed in a locking position of the device. lock in the housing section. Another or second section of the protective pin is in the locking position of the lock device essentially in the core section of the cylinder. The second section may have a larger cross section than the first section of the protective pin. Preferably a protective pin magnetic element is formed in the second section of the protective pin.

Preferably, the respective guard pin has such a shape that positional guidance of the guard pin is made possible due to the shape of the guard pin and the complementary shape of the guard pin channel.

Due to the magnetic elements formed on or in the axis of the key, the respective protective pin can be moved. In particular, it is possible that the protective pins are displaced in the direction of the magnetic elements or, in other words, pulled out. Preferably, the respective protective pin is completely pushed out of the cylinder core, so that the separation joint is no longer blocked and thus released.

Preferably, the cylinder core section is closed in the direction of a key channel of the cylinder core. The cylinder core section of the respective guard pin channel, on the other hand, is open in the direction of the housing section, so that the guard pin can be moved correspondingly. The respective protective pin channel is preferably not accessible from the key channel. Therefore, a direct manipulation of the protective pins from the key channel is not possible. This results in additional tamper protection.

Furthermore, it is possible that at least two shield pins preferably have the same magnetic polarity.

It is possible that at least two guard pins each have a magnetic element.

In another embodiment of the invention, it is possible that the protective pins themselves are formed as a magnetic element. The two guard pins preferably have a magnetic monopole or are formed as a magnetic monopole.

In the locking position of the locking device, the formation of at least two protective pins with the same magnetic polarity has the advantage that the two protective pins repel each other. Therefore, in the locking position the guard pins are held in the housing section of the respective guard pin channel due to the magnetic repulsive force. It is possible that the magnetic repulsive force acts as an additional force to hold the guard pins in the guard pin channel housing section.

Preferably, the at least two shield pins are formed as a north pole and/or have a magnet with a north pole.

In the formation of two guard pins according to the invention, a first guard pin is prestressed by means of a spring, in which case the pretension acts in the direction of the housing section of the guard pin channel. For this purpose, the spring can be inserted into the cylinder core section of the protective pin channel. The spring may rest on a barrel core section which closes the barrel core section of the protective pin channel. Preferably, the spring is formed in an upper guard pin channel.

In the other guard pin channel, which is preferably the lower guard pin channel, according to the invention no spring is inserted since, due to the downward alignment of this guard pin channel, the corresponding guard pin slides downwards and therefore in the direction of the housing section of the protective pin channel due to the force by weight.

A reversible key that interacts with the lock cylinder that has at least two protective pins with the same magnetic polarity has at least two magnetic elements that have the same magnetic polarity.

The magnetic elements of the reversible key preferably have a polarity opposite to the magnetic polarity of the protective pins. The guard pins preferably have a north pole or are a north pole. The magnetic elements of the key are each preferably formed as a south pole.

By inserting the reversible key into the lock cylinder, the two protective pins are pulled out in the direction of the magnetic elements having a second polarity due to the first magnetic polarity. Therefore, the protective pins are pulled out in the direction of the reversible key, so that the separation joint can be released.

The magnetic elements of the key are preferably formed as a magnetic monopole. In a particularly preferred embodiment of the invention, the magnetic elements of the reversible key are formed as a south pole.

The at least two magnetic elements are formed at one end of the key shaft facing a key head. In other words, the magnetic elements are formed at one end of the key shaft pointing in the direction of the key head or the key lug.

Since the respective magnetic element is preferably formed so close to the key head or key lug, the protective pin can only be moved into the cylinder core after almost complete insertion of the key shaft into the keyway. of the key.

It should be noted that the respective protective pin does not interact with a key coding element. In particular, the protective pins are not an additional coding of a locking device. The respective protective pin serves exclusively for tamper protection, in particular puncture protection and/or pull-out protection and/or impact protection and/or jam protection.

In particular, it should be noted that the respective protective pin is not a coding element. Known keys have mechanical and/or electronic coding in the form of incisions and/or holes and/or electronic elements. The profile of the key itself also serves as an encoding.

These codes are palpated on a lock cylinder. If the profile and codings of the key and the profile of the lock cylinder match, the key can be inserted. If the key cuts also fit, the coding pins in the lock cylinder are arranged in such a way that the lock cylinder core can be rotated. Briefly, the coding is formed in known lock devices if incisions or holes are provided at different depths and/or at different points on the key.

The lock device according to the invention can have other coding elements. However, the described protective pins are not to be understood as part of said coding devices.

In an embodiment according to the invention, the cylinder core is formed with at least two protective pins as described, in which these form pull-out protection elements. The pull-out protection elements form a form-fitting connection between the cylinder core and the cylinder housing. The form-fit connection cannot be overcome with the help of mechanical aids, since the respective protective pin is located in a closed protective pin channel, seen from the key channel. Direct contact with the pull-out protection element (protective pin) is avoided. Since the removal protection element (protection pin) can also be designed as a puncture protection, possible tampering is made even more difficult.

The key of the lock device is a reversible key. Preferably, the respective magnetic element is formed in a coding-free section, in particular without holes and/or without gaps of the key axis. In other words, the magnetic element is formed in such a section of the key shaft that it does not have any holes and/or no gaps.

The respective magnetic element is preferably to be formed out of notches or millings for key codes. Such a formation of the respective magnetic element in a free coding section means that no form-fitting connection is created between the key axis and the protective pin and thus that the key remains axially movable.

In another embodiment of the invention, the respective magnetic element is formed on the back of the key. In a particularly preferred embodiment of the invention, at least one first magnetic element can be formed on the back of the key and at least one second magnetic element on the side of the key shaft opposite the back of the key. .

Due to such a variable arrangement of at least one magnetic element, the protective pin can also be mounted in variably aligned protective pin channels. If at least one magnetic element is formed on the back of the key, it is preferable that the protective pin passes perpendicular to the longitudinal extent of the axis of the key.

A protector pin is prestressed in the protector pin channel.

The protective pin is pretensioned in such a way that the protective pin is pressed into a locking position of the lock device in the direction of the housing section of the protective pin channel. This guard pin is preloaded in the guard pin channel by means of a spring. As a result of such a pretensioning force, the protection against tampering, in particular the protection against perforation and/or the protection against removal, is increased.

The respective protective pin may be formed on a side of the lock cylinder facing a cylinder cover and/or a key channel opening. If the protective pins are formed so close to the cylinder cover or the protective rosette or so close to the opening of the key channel, it is possible that the respective protective pin can only be actuated after almost complete insertion of the locking pin. the key into the key channel and then can be pulled out in the direction of the cylinder core section of the protective pin channel.

In another embodiment of the invention, the axis of the protective pin channel can be formed vertically, in particular at right angles, to the longitudinal extent of the opening of the key channel and perpendicular to the longitudinal axis of the key channel. This is, in particular, an advantageous embodiment of the invention, provided that the respective magnetic element is formed in or on the back of the key on the key shaft.

The tamper protection device has two guard pins, each of which is slidably mounted in a guard pin channel. The two protective pin channels are preferably formed parallel to each other. In a particularly preferred embodiment of the invention, the two protective pin channels are formed parallel to each other and essentially perpendicular to the longitudinal axis of the key channel.

In one possible embodiment of the invention, the two shield pin channels are formed parallel to each other and essentially mirror-symmetrical to the longitudinal extent of the key channel opening.

Essentially mirror-symmetrical in this case is to be understood as such an arrangement of the protective pin channels which deviate at most slightly from the parallel arrangement with respect to one another and/or with respect to the distance to a mirror axis. The formation of two protective pins which can be actuated by means of magnetic elements of the key in turn increases the protection against tampering.

Since the respective protective pin can only be actuated when the key shaft is almost completely inserted into the key channel, it can be guaranteed that the magnetic elements can only act if numerous standardized decodings have been carried out beforehand.

The key of the lock device according to the invention has known coding elements, which initially cause, for example, the movement of the pins of the casing, so that the axis of the key can be inserted piece by piece into the channel of the key. key and almost when the shaft of the key is fully inserted, an actuation of the protective pins and thus an unlocking of the separation joint can be effected.

The key is designed as a reversible key, where the reversible key has in particular two discrete magnets with the same polarity.

In the formation of the reversible key, to allow an application in the lock device according to the invention, two mutually independent magnets are necessary, so that they can interact with the magnetic polarity of at least two protective pins.

Discrete magnets can be formed, for example, with the help of microcoils. In this sense, a battery could be arranged in the head of the key according to the invention, so that the microcoils can be actuated. Furthermore, it is possible that the discrete magnets are formed by piezoelectric elements.

In a particularly preferred embodiment of the invention, the discrete magnets are each formed as a magnetic monopole. Particularly preferably, the discrete magnets are south pole magnets. In another embodiment of the invention it is possible for the key to consist of two key halves. In this case, the dividing line between the key halves runs from the key head to the key tip, more precisely in extension of the longitudinal extension of a channel opening of the corresponding key.

The two key halves are respectively magnetized.

The invention will be explained in more detail below by means of exemplary embodiments and with the aid of schematic figures.

In this regard it is shown:

Figure 1a: a first embodiment of a lock device in a lock locking position according to the invention;

Figure 1b: the embodiment according to Fig. 1a in the open position;

Figure 2a: a second embodiment not according to the invention with respect to a lock device in a locked position;

Figure 2b: the embodiment according to Fig. 2a in the open position;

Figure 3a: a key of a lock device according to the invention in a perspective view;

Figure 3b: a longitudinal section through the key according to Fig. 3a;

Figure 4a: a third embodiment not according to the invention with respect to a lock device in a locked position;

Fig. 4b: the embodiment according to Fig. 4a with inserted key;

Figure 5a: an embodiment of a lock device according to the invention in a locked position; Y

Fig. 5b: the embodiment according to Fig. 5a with inserted key.

In the following description the same reference figures are used for identical and equivalent parts.

In figures 1a and 1b a first embodiment is shown with respect to a lock device 10 not according to the invention.

Fig. 1a shows the locking position of the lock device. In this case, no key is inserted into the lock cylinder.

Fig. 1b shows the key shaft 52 of a key 50. The key shaft 52 is inserted into the key channel 32.

The lock device 10 includes the lock cylinder 20, the key 50 and a tamper protection device. The lock cylinder 20 in turn has a cylinder core 30 mounted in a housing 40. Between the housing 40 and the cylinder core 30 a separation gasket 25 is formed. Due to the separation gasket 25, the cylinder core 30 can be rotated in the housing.

Furthermore, the protective pin 35 can be recognized. The protective pin 35 is movably mounted in the protective pin channel 41. The protective pin channel has a housing section 45 and a cylinder core section 46. The section of the cylinder core 46 of the protective pin channel 41 is formed in the cylinder core 30. The casing section 45 of the protective pin channel 41, on the other hand, is formed in the casing 40. The casing section 45 and the cylinder section 46 are arranged in line with each other, so that the protective pin channel 41 is formed. It can be seen that the housing section 45 is essentially smaller than the cylinder core section 46.

In the illustrated locking position, the protective pin 35 is also arranged in the housing section 45, so that the protective pin 35 protrudes from the cylinder core section 46 over the spacer joint 25 in the housing section 45. The protective pin 35 is formed in a section of the lock cylinder 20 facing the cylinder cover 22 or the key channel opening 33. Consequently, the protective pin 35 can only be actuated when the key shaft 52 is turned. inserted for the most part in the key channel 32.

As shown in Fig. 1b, the key shaft 52 is inserted into the key channel 32. The magnetic force of the magnetic element 60 acts on the protective pin 35. The protective pin 35 is moved or pulled out in the direction of the magnetic element 60. Therefore, the protective pin 35 is only located in the cylinder core section 46 of the protective pin channel 41. Therefore, the separation joint 25 is no longer locked by means of the protective pin 35, so that the cylinder core 30 is released and can be rotated.

Figures 2a and 2b show a second embodiment not according to the invention with respect to a lock device 10; this embodiment of the locking device has great similarities with the embodiment according to Figures 1a and 1b.

The only difference is the spring 28 formed in the protective pin channel 41, in particular in the cylinder core section 46 of the protective pin channel 41. The spring 28 pushes the protective pin 35 in the direction of the casing section 45. of the protective pin channel 41. In the locking position shown in Fig. 2a, the protective pin is pressed in the direction of the casing section 45 due to the force of the spring. This increases security against tampering.

In Fig. 2b, the key shaft 52 with the magnetic element 60 is in turn inserted into the key channel 32. The protective pin 35 is pushed in the direction of the magnetic element 60 due to magnetic forces. In this way the spring 28 is compressed. The dimensions of the spring 28 and the protective pin 35 must be chosen in such a way that both the compressed spring 28 and the protective pin 35 can be completely arranged in the cylinder core section 46 of the cylinder channel. protective pin 41 during the open position of the locking device 10.

The separation joint 25 is released in the state shown in Fig. 2b, so that the cylinder core 30 can be rotated in the casing 40.

Fig. 3a shows a key 50 of a lock device 10 according to the invention. It can be seen that the magnetic element 60 is formed at the end of the key shaft 52 which faces either the key head (not shown) 51 or the key neck 56. In other words, the magnetic element is formed at the end of the key shaft 52 opposite the tip of the key 53. The key shaft 52 has millings 58 on the broad sides of the key 55. In addition, coding elements 59 can be seen on the back of the key 54. The magnetic element 60 is formed in such a section of the axis of the key that it does not have milling 58 or coding elements 59.

As can be seen in the longitudinal section according to Fig. 3b, according to the invention on the side 57 of the axis of the key 52, formed in the opposite direction to the back of the key 54, in any case, an element is formed magnetic. In this case, the magnetic elements are formed at equal distances to the tip of the key 53. In Alternative embodiments of the invention it is conceivable that the magnetic elements are formed on the broad sides of the key 55.

In Fig. 4a another embodiment not according to the invention is shown with respect to a lock device 10. The key 50 has a magnetic element 60 on both wide sides of the key 55; In the present case, only one broad side of the key 55 can be seen.

The magnetic element 60 is in turn formed at the end of the key shaft 52 opposite the key tip 53. In Fig. 4a it can be seen, on the one hand, in a partial sectional representation that the lock cylinder lock 20 has a cylinder cover 22. Furthermore, the protective pin 35 can be recognized. This is mounted in a protective pin channel 41; in Fig. 4a it can be seen that the protective pin 35 is arranged in the housing section 45 of the protective pin channel 41. In this way the separation joint 25 is locked.

The protective pin channel axis A is formed parallel to the longitudinal extent LE of the key channel opening 33. On the side not shown as a section of the lock cylinder 20, another protective pin with a pin channel is also formed. corresponding protector (not shown). The axis A of the protective pin channel 41 is also formed perpendicular to the longitudinal axis L of the key channel 32.

Fig. 5a shows an embodiment of a locking device 10 according to the invention. In Fig. 5a, no key is inserted into the key channel 32. Fig. 5a thus shows the locking position of the lock device 10.

Two protective pins 35 can be recognized, each of which is formed in a protective pin channel 41. The protective pin channel 41 or the cylinder core section 46 is closed in the direction of the key channel 32. For this purpose A cylinder core section 36 is formed between the key channel 32 and the cylinder core section 46. Therefore, the protective pins 35 cannot be accessed from the key channel 32.

The upper guard pin 35, i.e. the guard pin 35 formed on the key channel 32, is prestressed with the help of a spring 28. The spring 28 presses the guard pin 35 upwards and thus into the direction of the casing section 45. In the case of the lower guard pin 35, i.e. formed below the key channel 32, such a pretension is not necessary since the guard pin 35 slides downwards in the direction of the housing section. casing 45 due to the force of its weight.

It can be seen that both guard pins 35 have a first section 37 and a second section 38. The first sections 37 serve in particular to insert the guard pin 35 into the housing section 45.

To allow the rotation of the cylinder core 30, the front sides 39 of the protective pins 35 are respectively chamfered.

The second sections 38 are more broadly formed. The shape of the second section 38 of the protective pins 35 also causes a position guide of the pin 35 in the protective pin channel 41, in particular in the cylinder core section 46.

Also formed in the second section 38 are magnets 34. The magnets 34 have the same magnetic polarity, in particular a north polarity. The magnets 34 and thus the guard pins 35 repel each other in the shown locking position, i.e. additionally so that, due to this repulsive force, the guard pins 35 are further pressed in their respective positions towards each other. casing sections 45.

Fig. 5a also shows that the axes of the protective pin channels 41 are essentially parallel to each other. Furthermore, the axes of the protective pin channels 41 are arranged perpendicular to the longitudinal axis of the key channel and perpendicular to the longitudinal extent of the key channel opening 33.

In Fig. 5b the lock device 10 with inserted key 50 is shown; according to the invention, it is a reversible key.

The key 50 has two magnetic elements 60. The magnetic elements 60 have the same magnetic polarity. The magnetic polarity of the magnetic elements 60 of the key 60 is formed in opposition to the magnetic polarity of the magnets 34 of the guard pins 35. Consequently, the guard pins 35 or their magnets 34 move in the direction of rotation. key 50 when the key 50 is inserted into the key channel 32. The pretension force of the spring 28 as well as the weight force of the lower guard pin 35 are overcome due to the magnetic attraction. The separation joint 25 is released due to this.

Reference character list

10 lock device

20 lock cylinder

22 Cylinder Cover

25 separation joint

28 Spring

30 Cylinder core

32 key channel

33 Key channel opening

34 magnets

35 Guard Pin

36 Cylinder core section

37 First section

38 Second section

39 Front side

40 Casing

41 Protector Pin Channel

45 Casing Section

46 Cylinder core section

50 key

51 key head

52 key shaft

53 key tip

54 Back side of the key

55 Wide side of the key

56 Key Neck

57 opposite side

58 Milling

59 Coding element

60 magnetic element

A Shield Pin Channel Shaft

L Longitudinal axis of key channel

LE Longitudinal extension of the key channel opening

Claims (10)

1. Lock device (10) comprising a lock cylinder (20), a key (50) and a tamper protection device, wherein the lock cylinder (20) has a cylinder core (30) mounted in a housing (40), in which a separation joint (25) is formed between the housing (40) and the cylinder core (30), where the tamper protection device is a drilling guard and/or a removal guard and has at least two guard pins (35), which are respectively movably stored in a guard pin channel (41), wherein the channels of the protective pin (41) have a housing section (45) and a cylinder core section (46), where in a locking position of the locking device (10), the protection pins (35) are arranged at least in sections in the housing sections (45) in such a way that the separation joint (25) is locked, and to achieve an open position of the locking device (10), the protection pins (35) are able to move completely into the cylinder core sections (46) due to a reversible key (50) that can be inserted into the core of the cylinder (30) and to at least two magnetic elements formed on or in the key axis (52) of the key (50) (60) and the separation joint (25) can be unlocked, - where the locked position refers to the fully closed state of the lock device (10) and to the state if the key (50) has not yet been fully inserted into the key channel (32), - wherein the at least two magnetic elements (60) are formed on one end of the key shaft (52) facing a key head (51), - wherein the protection pins (35) can only move into the key channel (32) after almost complete insertion of the key shaft (52), - where the protective pins (35) are not coding elements, - wherein by means of a spring (28) a first protective pin is prestressed, it is inserted into the cylinder core section (46) of the first protective pin channel (41) and the pretension acts in the direction of the housing section (45) of the first channel of the protective pin (41), - where no spring is inserted in the other channel of the protective pin (41) 2. Locking device according to claim 1, characterized because the cylinder core section (46) of at least one protective pin channel (41) is closed in the direction of the key channel (32) of the cylinder core (30). 3. Locking device according to claim 1 or 2, characterized because the at least two shield pins (35) have the same magnetic polarity (34). Lock device according to one of claims 1 to 3, in particular according to claim 3, characterized in that the reversible key has at least two magnetic elements (60) having an equal magnetic polarity, wherein the magnetic elements (60) of the reversible key (50) preferably have an opposite polarity to the magnetic polarity of the protective pins (35) . Lock device (10) according to one of the preceding claims, characterized in that the respective magnetic element (60) is formed in a free coding section of the key shaft (52). Lock device (10) according to one of the preceding claims, characterized because At least one magnetic element (60) is formed on the two wide key sides (55) of the key shaft (52). Locking device (10) according to one of the preceding claims, characterized because The at least two protective pins (35) are formed on a side of the lock cylinder (20) facing a cylinder cover (22) and/or a key channel opening (33). Locking device (10) according to one of the preceding claims, characterized because the axis (A) of the protective pin channels (41) are formed perpendicular to the longitudinal extension (LE) of the opening of the key channel (33) and perpendicular to the longitudinal axis (L) of the key channel (32). ). Locking device (10) according to one of the preceding claims, characterized because the reversible key has two discrete magnets (60) with identical polarity. 10. Locking device (10) according to claim 9, characterized because The discrete magnets (60) are formed by microcoils and/or magnetized key material and/or by piezoelectric elements.