ES2955095A1 - LOCK SYSTEM WITH KEY AND CYLINDER WITH DOUBLE CHECK COUNTERPITCH (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Lock system with a key (4) and a lock cylinder (1) in which the cylinder (1) comprises a recess (3.1) with a mobile part (9) movable in a radial direction and aligned with a counter-spin (10) verification located in the opposite position of the cylinder (1), the key (4) comprising a recess (6) in a smooth edge (5.1) with a wall (4.2) that when contacting the moving part (9) defines the depth correct key (4) in the cylinder (1); and in a turned position of the key (4), the counter-pin (10) performs a first verification of the key (4) in the contact of the moving part (9) against said counter-pin (10), as the moving part (10) moves. 9) integrally with the rotor (3), and a second verification of the key (4) in contact with a projection (4.3) of the wall (4.2) of the key (4). (Machine-translation by Google Translate, not legally binding)

Description

DESCRIPTION

LOCK SYSTEM WITH KEY AND CYLINDER WITH DOUBLE COUNTERPITON

CHECK

Technical sector

The present invention relates to a lock system that comprises a key and a lock cylinder, so-called lock cylinders.

State of the art

This type of serreta cylinder locks are associated with a key that includes on its edge a step with a combination in correspondence with some cylinder pins that verify the key to release the rotation lock of the rotor inside the cylinder stator, in combination with the profile and slots of the key that must correspond to the configuration of the cylinder itself.

However, this configuration is susceptible to being manipulated for illegal opening, so it is necessary to apply an additional condition to unlock the rotation of the rotor inside the cylinder stator.

To this end, one way to establish this additional condition is to incorporate an extra security element as disclosed, for example, in the European patent application with publication number EP2360334B1, in which the cylinder has a stop element fixed to the cylinder that establishes a key entry stop in correspondence with a recess made in the smooth edge of the key, so that a key with a length and depth of recess that does not coincide with the position of the fixed stop element will not allow the rotor to rotate as the pins do not align with the step of the key.

However, this configuration has the disadvantage that a person familiar with this type of key can use an illegal copy in which the recess reaches the maximum allowed so that it does not interact with the pins so that the key can be turned. without interfering with the stop element.

In view of the described disadvantages of the currently existing solutions, it is evident that a solution is necessary that incorporates an additional key verification that prevents an illegal copy of the key from being made by a person other than the manufacturer itself.

Object of the invention

In order to fulfill this objective and solve the technical problems discussed so far, in addition to providing additional advantages that can be derived later, the present invention refers to a lock system that comprises a key and a lock cylinder, in which the lock cylinder comprises a stator and a rotor, with spring-loaded pins and counter-pins to block the rotation of the rotor. The key comprising a blade with a carved edge with steps to establish the opening code in an unlocking position in which the pins and counter-pins are aligned allowing the rotation of the rotor, that is, aligned with the contact line between rotor and stator (outer surface of the rotor and inner surface of the stator hole) so that the rotor is allowed to rotate without any of the counter-spins blocking it. And the key of the locking system with a smooth edge opposite the carved edge. The cylinder comprising a recess with a moving part that is movable in the radial direction of the cylinder and aligned with a check counter-pin located in the opposite position of the cylinder, the key comprising a recess in the smooth edge with a wall that when contacting the moving part in The key insertion defines the correct depth of entry of the key into the lock cylinder. And locking system in which additionally in a turned position of the key, in which the smooth edge of the key is facing against the counter-pins, the verification counter-pin is configured to perform a first verification of the key in the contact of the moving piece against said check counter-pin, as the moving piece moves in rotation in solidarity with the rotor. And the check latch configured to perform a second check of the key in contact with a projection of the key wall, keeping the latch in the unlocked position.

Thanks to this configuration, the lock system object of the invention increases the capacity to code the keys, carrying out a first check of the key in which the length of the recess or depth at which the key must be inserted is controlled, and subsequently after When turning the key, two additional verifications are carried out thanks to the configuration of the verification counter-spindle in conjunction with the sliding configuration of the moving part, checking that the key has the correct projection and the correct depth of the recess so that the counter-pin is kept in the unlocked position. Tampering with the lock or illegal copying of the key is thus more safely avoided.

Preferably, the housing cavity for the moving part is located only in the rotor of the cylinder. In this way, the moving part is retained in a recess of the rotor with the capacity for its movement in a radial direction to the cylinder, so as to avoid unwanted jamming of the moving part in the stator if the recess covers part of the stator, in addition to facilitating the making. Preferably, said recess will be made in a concentric position and opposite to the housing hole of the last combination pin, a position counted from the face for inserting the key into the cylinder rotor. In this way, the robustness of the key is maintained and the moving part is retained in a recess with the capacity to move radially to the cylinder rotor.

It is possible to move this housing of the moving part to other positions concentric and opposite to the housing holes of the combination pins in addition to the last position, but always at the cost of weakening the resistance of the key.

According to a characteristic of the invention, the moving part can have its lateral geometry, that is, its external profile, in correspondence with the geometry of the wall of the recess of the smooth edge of the key. In this way, the verification of the depth of insertion of the key will not be determined by contact with the wall but by correspondence with its geometry, resulting in more secure coding.

According to another characteristic of the invention, the moving part has a chamfer on its upper surface. In this way, when inserting the key, it is easier for the moving part to move when the recess of the key comes into contact with the chamfer to its correct position for the subsequent maintenance of the check counter-pin in the unlocking position.

The invention also contemplates that the lock system can have a double entry, with a moving part and a check counter for both key entries in the cylinder. In this way, greater security or ease of assembly is provided if both key entries have the same configuration.

We can also voluntarily implement the moving part system and a counterspin of verification only on one side of the cylinder, allowing it to be unlocked on the unprotected side using a conventional serrated key, while on the other it is necessary to use the key object of the invention.

Preferably, according to the invention the verification counter-spindle comprises an inner stem and an outer sleeve around said stem actuated by respective springs independently, the inner stem being the one that comes into contact with the moving part and the outer sleeve being the one that comes into contact with the moving part. comes into contact with the key projection in the turned position to keep the counter-pin in the unlocked position. This configuration of verification counterswitch allows double verification with a simple configuration that facilitates manufacturing and assembly tasks and also increases the security of the lock.

Only in the case in which the lock has a double entry may the lock system be applied in a simplified manner that includes, in one entry, a check counter with a perimeter projection that cooperates with the projection of the key in the turned position to maintain said check counter-pin in the unlocking position, and in the other entrance it comprises a check counter-pin with a stepped section with an internal projection that cooperates in the rotated position with the moving part to keep the check counter-pin in the unlocking position. , so that the first verification of the key occurs when inserting the key through one entrance and the second verification occurs when inserting the key through the other entrance of the lock cylinder. That is to say, in one of the entrances there is a check counter-pin that only interacts with the protrusion of the wall of the key recess, while in the other entrance in the same position there is a check counter-pin that only interacts with the moving part. . In this way, the double verification of the key will be carried out when inserting the key in the second entry after having passed the first verification in the first entry. This situation would also be possible if in one of the inputs one of these verification counter-pins is used that only checks one of the conditions and in the other entry a counter-pin is included that checks both conditions (key protrusion and contact with the moving part). like the one previously described.

For greater ease of manufacturing, the counter-pins that only verify the key per entry mentioned in the previous configuration are planned to be made in a single piece, which facilitates machining and assembly tasks.

Description of the figures

Figure 1 shows a longitudinal section view of the lock cylinder object of the invention, in this case with double entry and with a correct key inserted in one of its entries.

Figure 2 shows a section view like that of Figure 1 with the key turned together with the moving part.

Figure 3 is a section view of the rotor of the lock object of the invention in which the housing cavity of the moving part can be seen.

Figure 4 is a perspective view of the correct key for the lock object of the invention.

Figure 5 is a perspective view of the moving part.

Figure 6 is a section view of the verification counterspin in the form of two independently movable pieces.

Figure 7 shows a detail of the positioning of the two-piece check counter-pin for an incorrect key without a projection inserted in the turned position.

Figure 8 shows a detail like that of Figure 7, in this case with a key with the correct projection, but with the incorrect depth of the recess.

Figure 9 shows a detail like that of figures 7 and 8, in this case with the correct key to open the lock.

Figures 10 and 11 show a perspective view of the verification counter-pin in its one-piece format for its respective positioning in each of the lock entrances.

Figure 12 shows a detail of the positioning of the single-sided verification counterspin. piece with a perimeter projection for an incorrect key without a projection inserted in the turned position, and figure 13 shows the same detail for a correct key with a projection.

Figure 14 shows a detail of the verification counter-pin with interior projection for an incorrect key with a recess depth greater than that required, and Figure 15 shows the same detail for a correct key with the correct projection and recess depth.

Figure 16 shows a section view of the lock cylinder with a counter-lever with a perimeter projection in one entrance and a counter-lever with an interior projection in the other entrance.

Detailed description of the invention

In view of the aforementioned figures, and in accordance with the numbering adopted, an example of a preferred embodiment of the invention can be seen in them, which includes the parts and elements that are indicated and described in detail below corresponding to an example. not limiting practical implementation.

In Figure 1 you can see the lock cylinder (1) of the lock system object of the invention, with the key (4) being inserted through one of the entrances before it is turned.

As can be seen in Figure 3, the rotor (3) that rotates inside the stator (2) comprises a recess (3.1) for housing a moving part (9). Preferably said recess (3.1) will have a narrowing in correspondence with a preferably stepped configuration of the mobile part (9) for its retention in the rotor (3). The recess (3.1) will have a dimension greater than the dimension of the moving part (9) in the radial direction of the rotor (3) so that the moving part (9) has freedom of movement in the radial direction of the rotor (3). and without the possibility of movement in the axial direction of the rotor (3). Said recess may also include the stator (2) for the movement of the moving part (9), however, preferably the recess (3.1) will be made only in the rotor (3) to avoid blocking the rotation if the moving part ( 9) is introduced into the stator (2).

To provide greater security, the lock system first checks the entry depth of the key (4) in the lock cylinder (1) and subsequently two additional verifications will be carried out to verify that the key (4) used is the correct one and not an illegal copy.

To do this, as can be seen in Figure 4, the key (4) includes the blade (5) a recess (6) in its smooth edge (5.1) with a transverse wall (4.2), so that with the introduction of the key (4) in the lock cylinder (1) the key will abut the wall (4.2) when contacting the moving part (9) laterally, leaving the key (4) in the correct position so that the carved edge (5.2) face the pitons (7). This check allows, with the opening code of the carved edge (5.2), to position the pins (7) and counter pins (8) in the unlocked position in which they align with the contact edge between rotor (3) and stator (2). ).

According to a design option, the wall (4.2) of the key (4) and the side profile of the moving part (9) have complementary geometric configurations, so that the key (4) will only be positioned at the correct depth if they coincide. both profiles providing greater security in this initial check.

Once the key (4) and the pins (7) are positioned in the unlocking position, it is possible to turn the key (4). Thus, as can be seen in figure 2, when turning the key (4), the smooth edge (5.1) faces the counter-pins (8). At this moment, in order to make a new turn to open the lock (1), the key (4) goes through two additional verifications by a verification counter-pin (10, 10', 10'').

According to a preferred embodiment, the lock (1) comprises a verification counter-pin (10) like the one shown in Figure 6, which has an inner stem (10.1) and a sleeve (10.2) exterior to said inner stem (10.1), both being independently movable by the action of a spring. In this way, if the key (4) does not have the appropriate configuration, the inner stem (10.1), the outer sleeve (10.2) or both will come out of the unlocked position by not contacting the smooth edge (5.1) due to the recess (6) of the key (4).

To prevent the check counter-pin (10) from leaving the unlocked position and entering the rotor (3) preventing the key (4) from turning, in the turned position of the key (4) a first check is carried out in which it is verified that the depth of the recess (6) is correct. To do this, if the depth of the key (4) is correct, the moving part (9) contacts the inner stem (10.1) of the check counter-pin (10), keeping it in the unlocked position. This verification is possible by the radial displacement of the moving part (9) which, with the correct depth of the recess (6), will be positioned in the insertion of the key (4). in contact with the inner surface of the stator (2). Thus, when rotating the moving part (9) in conjunction with the rotor (3), in the turned position of the key (4) the moving part (9) will be aligned with the inner surface of the stator (2) maintaining it in that position. the inner stem (10.1) to prevent it from entering the rotor (3) and blocking the rotation for opening the lock (1). In figure 8 you can see a detail of said first verification, in which it is detected that the recess (6) is not correct and consequently the inner rod (10.1) is introduced into the rotor (3) blocking the rotation.

According to a design option, as can be seen in Figure 5, the moving part (9) comprises an upper chamfer (9.1) that facilitates its movement when contacting the inclined surface of the end of the key (4), so that no jams occur when inserting the key (4).

Once it has been verified that the depth of the recess (6) of the key (4) is correct, a second verification of the key (4) is carried out with the outer sleeve (10.2) of the verification counterspin (10). In this case, it is necessary that the key (4) comprises a projection (4.3) that projects from the wall (4.2) so that in the turned position of the key (4) it maintains the sleeve (10.2) in the position of unlocking, preventing it from moving due to the action of the spring and entering the rotor (3), blocking its rotation. The extension of said protrusion (4.3) will have a maximum length to cover the width of the outer jacket (10.2) of the verification counterspin (10). As can be seen in Figure 7, if the key (4) does not include said projection (4.3), it is detected that the key (4) is incorrect when the sleeve (10.2) is inserted into the rotor (3), thus blocking the rotation. .

In this way, if the correct key (4) is used, as can be seen in figure 9, the check counterspin (10) will remain with both the inner stem (10.1) and the outer sleeve (10.2) in the unlocking position allowing you to continue turning the key (4) until the lock (1) opens.

For double-entry locks, according to an alternative embodiment, it is planned that the lock (1) comprises a verification counter-lever (10') on one entrance and a verification counter-lever (10'') on the other entrance. As can be seen in Figure 11, the verification counterspin (10') is a single solid piece with a perimeter projection (10.2.1), and according to Figure 10, the verification counterspin (10'') has a stepped upper surface with an interior projection (10.1.1). However, a check stud (10') with a spring-loaded outer sleeve and a fixed inner stem, and similar configuration, would be equally functional. for the check counter-pin (10'') which could be with a fixed outer sleeve and a spring-operated inner stem.

In this alternative embodiment, as can be seen in Figure 16, at the left entrance there is, for example, the verification counter-spit (10') with a perimeter projection (10.2.1) and at the left entrance a verification counter-spit ( 10'') with interior projection (10.1.1). In this way, the first check of the key (4) is carried out in the turned position of the key (4) in the left entrance of the lock (1).

As can be seen in the detail of figure 12, if the key (4) is not the correct one and does not have the projection (4.3), the check counter-pin (10') leaves the locking position and prevents the rotation of the rotor. (3) until the lock (1) opens. However, if the key (4) is correct, as can be seen in Figure 13, the projection (4.3) cooperates with the perimeter projection (10.2.1) keeping the check counter-pin (10') in the position of unlocking. For this configuration, it will also be necessary that the height of the projection (4.3) or that there be an additional projection that keeps the moving part (9) in a position that prevents it from entering the stator and blocking its rotation.

In this way, the first verification of the key (4) is carried out, however, it would not be verified that the depth of the recess (6) of the key (4) is correct. For this second verification, if the key (4) is inserted through the opposite entrance of the lock (1), in this case a verification counter-pin (10'') is used. In the turned position of the key (4), as can be seen in figure 14, if the depth of the recess (6) is not correct, the check counter-pin (10'') is introduced into the rotor (3) blocking the turn to open the lock (1). However, as can be seen in figure 15, if the depth of the recess (6) is correct, the moving part (9) makes contact with its end against the interior projection (10.1.1) so that the check counter-pin (10'') in the unlocking position allowing the rotor (3) to rotate until the lock (1) opens.

This double-entry lock verification configuration would also include a verification counter-switch (10') or (10'') on one entrance and a verification counter-switch (10) on the other entrance as described above.

This lock system therefore allows the ability to code the keys to be increased, making illegal opening of the lock more difficult.

Claims (8)

1.- Lock system comprising a key (4) and a lock cylinder (1) in which the lock cylinder (1) comprises a stator (2) and a rotor (3), with pins (7) and spring-loaded counter-pins (8) to block the rotation of the rotor (3); and the key (4) comprising a blade (5) with a carved edge (5.2) with steps to establish the opening code in an unlocking position in which the pins (7) and counter-pins (8) are aligned allowing rotation of the rotor (3), and the key with a smooth edge (5.1) opposite the carved edge (5.2), characterized in that the cylinder (1) comprises a recess (3.1) with a mobile part (9) movable in the radial direction of the cylinder (1) and aligned with a check counter-pin (10) located in the opposite position of the cylinder (1), the key (4) comprising a recess (6) in the smooth edge (5.1) with a wall (4.2) that By contacting the moving part (9) when introducing the key (4), it defines the correct depth of entry of the key (4) into the lock cylinder (1); and because in a turned position of the key (4), in which the smooth edge (5.1) of the key (4) is facing the counter-pins (8), the verification counter-pin (10) is configured to perform a first verification of the key (4) in the contact of the moving part (9) against said verification counter-spin (10), when the moving part (9) moves in rotation integrally with the rotor (3), and said counter-spin is configured (10) verification to carry out a second verification of the key (4) in contact with a projection (4.3) of the wall (4.2) of the key (4), keeping the counter-pin (10) in the unlocked position. 2.- Lock system according to claim 1, characterized in that the recess (3.1) for housing the moving part (9) is only arranged in the rotor (3) of the cylinder (1). 3.- Lock system according to claims 1 or 2, characterized in that the lateral geometry of the mobile part (9) has a shape corresponding to the geometry of the wall (4.2). 4.- Lock system according to any one of the previous claims, characterized in that the mobile part (9) has a chamfer (9.1) on its upper surface. 5.- Locking system according to any one of the previous claims, characterized in that the lock system has a double entry with a check counter (10) in one or both entrances. 6. Locking system according to any one of the preceding claims, characterized in that the verification counterspin (10) comprises an inner stem (10.1) and an outer sleeve (10.2) around said inner stem (10.1) actuated by respective springs. independently, the inner stem (10.1) being the one that comes into contact with the moving part (9) and the outer sleeve (10.2) being the one that comes into contact with the projection (4.3) of the key (4) in the position rotated to keep the counter-pin (10) in the unlocked position. 7.- Lock system according to claim 5, characterized in that at one entrance it comprises a check counter (10') with a perimeter projection (10.2.1) that cooperates with the projection (4.3) of the key (4) in the rotated position to maintain said check counter-pin (10') in the unlocking position, and in the other entrance it comprises a check counter-pin (10'') with a stepped section with an interior projection (10.1.1) that cooperates in the rotated position with the moving part (9) to maintain the verification counterspin (10'') in the unlocking position, so that the first verification of the key (4) occurs when the key (4) is inserted through an entry and the second verification occurs in the turned position by inserting the key (4) through the other entrance of the lock cylinder (1). 8.- Locking system according to the previous claim, characterized in that the verification counter-pin (10') and/or the verification counter-pin (10'') is a single piece.