ES2687865T3 - Cylinder device for a lock with combined pin tumblers - Google Patents

Abstract

Cylinder device and a cylinder key (3), said cylinder device comprising a barrel (1) and a drum (2) coupled to each other; wherein the drum (2) has a cavity (9) configured to allow the housing, at least partially, of a cylinder key (3) responsible for blocking or unlocking a relative rotation between said barrel (1) and drum (2 ); wherein the barrel (1) comprises at least one pair of counter pin tumblers (5) and combined pin tumblers (6) coupled to each other through at least two elastic elements (4), said elements (4) being elastics in charge of elastically joining the pin tumbler (6) combined with their respective against pin tumblers (5), and allowing contact between the cylinder key (3) and said, at least one, combined pin tumbler (6) assisted by said elastic elements (4); and the device and the key being characterized in that the portion of the cylinder key (3) to be introduced into the cavity (8) of the drum (2) has two faces (3b, 3c) and two edges (3a), where said edges (3a) comprise at least one cavity (8) that has at least one pair of housings (3d, 3e) joined together by a channel (3f), where said cavity (8) is configured to accommodate and push said at least a, pin tumbler (6) combined towards the corresponding pin tumblers (5), wherein said combined pin tumbler (6) has at least two protrusions (6a, 6b) joined together by a cord (6c), where said protuberances (6a, 6b) are in correspondence with the pair of housings (3d, 3e) of the cavity (8) of the cylinder key (3), such that the pin tumbler 86) is capable of tilting with with respect to an axis parallel to the contact plane between said pin tumbler (6) combined against pin tumblers (5), defi having a specific spatial position to join the respective combined pin tumbler (6) and the counter pin tumblers (5), which allows relative movement between said barrel (1) and the drum (2) when corresponding to the plane of union between the barrel (1) and the drum (2).

Description

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DESCRIPTION

Cylinder device for a lock with combined pin tumblers Technical field of the invention

The present invention relates to a cylinder device for a lock, which has application in the locksmith industry, and more specifically in the field of locks for doors or accesses and, also, in the industry in general in its application for the activation of other devices.

The main purpose of this device for cylinders of the invention is to make it extremely difficult to fraudulently open the cylinder by third parties through fraudulent manipulation; in addition to hindering the fraudulent reproduction of the system keys avoiding their carving by unauthorized third parties.

Background of the invention

By way of introduction, multiple closing devices for doors or windows are known in general, the most commonly used being the closures with a light bulb, which have, among other elements, a fixed body known as a barrel, coupled directly to the lock, and a cylinder rotating or drum housed axially inside the barrel, such that the rotating movement of the drum allows to open and close the lock or activate other mechanisms.

Such lock cylinders are configured by a barrel and a drum that rotates inside the barrel, into which the body of a key that drives an eccentric or cam or the cylinder drive element is inserted. Therefore, the barrel lock / unlock elements are arranged between the rotor and the barrel, said elements being:

- pin tumblers placed on the drum and displaced by key traces; Y

- against pin tumblers placed between the drum and the barrel and which always remain in contact with the pin tumblers by the action of springs, being both the counter tumblers and the pin tumblers the elements that prevent the drum from rotating in the barrel when they are located in the plane of rotation when there is no key inserted or when this is not the correct key.

Therefore, the user is responsible for releasing the rotation of the drum by entering the correct key inside. In this context, and in order to be able to block said rotating movement of the cylinder at the user's discretion, the rotating cylinder has a series of radial through holes along the entire thickness of the drum and at any angle; and in correspondence with said holes, the barrel has a series of pin tumblers and against spring-assisted pin tumblers, such that the pin tumblers have freedom of movement radially to the drum, because the holes of said barrel Cylinders are located in correspondence with the position of each of the pin tumblers and against barrel pin tumblers.

Each of the pin tumblers preferably has a different length, such that when they are located in a certain position, all the planes of connection between the pin tumblers and against pin tumblers correspond to the joint plane between the barrel and the drum; allowing the rotating movement of the drum with respect to the barrel.

In order to place each of the pin tumblers in said specific position, it is necessary to introduce a key that has a stepped geometry, where each of the valleys defines a depth corresponding to the length and exact position of each of the tumblers pins to accommodate in two valleys; and thus defining a unique opening key for each type of lock.

This solution is widely known in the state of the art, see for example the international patent application with publication number WO 03/060261, in which a plurality of pin tumblers are configured to be located in a series of locations predefined by the geometry of the key, where said key has a steep edge in correspondence with the pin tumblers; this being a solution used in simple locks but that has the disadvantage of being easily manipulated by third parties, being able to reproduce its geometry with adapted tools such as deformable wires or keys.

Other solutions are known from WO2013 / 055877, EP 2090726, DE 529771 or US 2408283 in which a combined pin tumbler is used. In order to solve this problem, it is known that there are keys that present in their major faces emptied in correspondence with the tumbler tumblers of the lock body, so that these empties are preferably located on both major faces and, therefore, hinder the opening fraudulent by having a greater number of combinations for unlocking; however, since its use is widely extended, it is possible to proceed to the identification of the key by being able to make its copy in standard keys with emptyings according to the position of the pin tumblers.

Additionally, it is worth noting a technique of opening locks known as “bumping”. In this technique, a key is used with all mechanized valleys at maximum depth. In this context, said

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key in the body of the lock and, at the same time that it is a question of turning the key in the opening direction, one proceeds to hit the head of the key with some object, so that this impact is transmitted to the counter knockers of pins, making it possible that at one point all the pin tumblers and against pin tumblers are aligned in the common generatrix of the barrel and drum and, since pressure is applied to the key in the direction of rotation, the rotation of the drum and the subsequent fraudulent opening occur.

For this reason, in view of the drawbacks described and linked to the ease of opening the locks belonging to the state of the art, it is necessary the appearance of a new cylinder device for a lock capable of improving the security of the lock. against procedures, such as "forced" and "bumping"; in addition to hinder the manipulation of keys by third parties. And all this is possible with a device formed by simple entities, whose manufacture does not imply a substantial increase in the lock device object of the invention.

Description of the invention

The present invention relates to a cylinder device and a cylinder key according to claim 1. Therefore, it can be seen that the cylinder device and the cylinder key have two main entities:

- On the one hand, an entity is the assembly formed by the barrel and the drum, which is preferably housed in a lock that, in turn, is preferably placed in a door, window or similar object coupled to a frame, frame or part fixed.

- On the other hand, the other entity is a key in charge of opening and closing the door or window with respect to the frame, frame or fixed part, or activating another device.

Such entities are known in the state of the art according to the background described above; but it is observed as a novel feature that the key has, in its edges, at least one specific cavity located in correspondence with the at least one combined pin tumbler belonging to the set formed by the barrel and the drum; therefore, when the key is housed inside the drum, the cavity of the key acts as an envelope with respect to the combined pin tumbler and locates it in a certain position with respect to the counter knocker tumblers, exerting a compression on said, at least one, elastic element responsible for elastically joining the pin tumbler combined with their respective against pin tumblers. Said determined position defines a specific key and corresponds to the plane of union between the barrel and the drum; so that the user can rotate the drum with respect to the barrel, to proceed to operate the lock or the associated device.

Additionally it is observed that there is implicitly a very advantageous technical effect and linked to the particular geometry of the pin tumbler and the key cavity, since it is described that each pin tumbler has at least two protrusions, corresponding to said pair of housings of the key in the respective specific cavity; these technical characteristics allow said pin tumbler to have the possibility of tilting with respect to an axis parallel to the contact plane between said combined pin tumbler and its counter pin tumblers, such that in the event that a third party tries to force it to open it by means of “bumping”, and proceed to hit the key to move the counter tumblers, or by “forced” and proceed to vibrate them, said against pin tumblers do not move in unison when presenting the combined pin tumbler , at least two, bumps of different height; avoiding forced opening in a very efficient and simple way unknown in the state of the art.

It is worth noting the concept of a cavity in the edges, which is different from a stepping of the key edge itself, where said stepping is known in the state of the art of other simpler lock cylinders. Since said, at least one, cavity guarantees that the combined pin tumbler must be placed both in height and in depth throughout its length with respect to said at least one, key cavity, improving security against third parties.

Additionally, in the event that a third party enters a false key through the drum cavity, the combined pin tumbler will be located with respect to the pin tumblers in an arbitrary position and which does not have to coincide with the joint plane between the cannon and drum; preventing the relative rotation of the drum with respect to the barrel, and, therefore, preventing the opening of the lock.

In relation to the design and geometric configuration of the combined pin tumbler, it is described that said at least one combined pin tumbler has said at least two protrusions joined together by a cord; and where the edge of the key has a pair of housings joined together by a channel, in correspondence with said pair of protuberances and said cord of said, at least one, combined pin tumbler respectively.

In this way, the inviolability of the lock device is substantially increased since the combined pin tumbler has two protuberances that define, therefore, two cavities in the corresponding key, unlike the currently known pin tumblers, which are formed by simple cylinders, which are easier to manipulate making it easier to open the lock.

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The preferred design option is contemplated in which the connection between said, at least one, combined pin tumbler and the counter pin tumblers can be carried out through two elastic elements configured to allow tilting between said pin tumbler combined with with respect to their corresponding pin tumblers; thereby improving the tilting of the combined pin tumbler with respect to those corresponding against pin tumblers, being an effective and simple solution with respect to possible lock violations by techniques such as "bumping" and / or "forced".

In this sense, and as a preferred embodiment, it is described that each of the protuberances of said, at least one, combined pin tumbler has different dimensions between them; and where each of the housings configured to contain said protuberances have different dimensions between them respectively. This does not prevent the passage of the key through the interior of the drum, since the elastic connecting elements between the combined pin tumbler and the counter pin tumblers are compressed and expanded according to the projections and cavities of the key; and, again, said preferred design increases security against third parties wishing to unlock the lock device object of the invention without the corresponding key.

The opening procedure associated with the lock device object of the invention is also described, wherein said procedure comprises the following steps:

a) insertion of the key through the drum cavity;

b) compression and expansion of the elastic element of said at least one pair of combined pin tumbler and against pin tumblers;

c) housing of said at least one combined pin tumbler in said at least one corresponding cavity of the key edge; defining a specific spatial position of union between two combined pin tumblers and against pin tumblers; Y

d) relative rotation of the drum with respect to the barrel due to the correspondence of the specific spatial position of union between two combined pin tumblers and against pin tumblers with the joint plane between the barrel and the drum.

In order to increase the number of pairs of combined pin tumblers and against pin tumblers, it is observed that the edge has a surface on which it can accommodate longitudinally and in both orientations a limited number of combined pin tumblers. For this reason, the preferred option is described in which the barrel comprises a plurality of pairs of counter dowels and combined dowel tumblers located orthogonally with respect to said at least one pair of dowel dowels and against dowel dowels. combined to fit in the edge of the key; and wherein said key has at least one of its faces, a plurality of cavities in correspondence with the number and corresponding geometry of the plurality of pairs of combined pin tumblers and against pin tumblers.

Therefore, the key has cavities both in its major faces and in its edges, and thanks to this the safety of the device is improved making its inviolability more difficult against forced opening procedures such as “forced” or “bumping” . This results in a hybrid between the safest traditional keys and the new key with special cavities in its edges; and in the same way, the barrel and the drum have tumblers of combined pegs and against tumblers of pegs located orthogonally between them, in correspondence with the respective cavities of the key.

In relation to how the relative movement between the barrel and the drum is performed, the design option is described in which the drum has a cylindrical geometry, and the barrel has a cylindrical cavity configured to couple said drum; allowing a relative movement between two bodies through the axis of revolution of the cylindrical geometry of the drum. This is a simple and highly reliable solution to rotate the drum through the cylindrical contact between the drum and the barrel; guaranteeing a sliding contact and with a good surface finish that avoids unwanted blockages.

Finally, and in relation to the possibility of using the plurality of pairs of combined pin tumblers and their counter pin tumblers, orthogonal to said, at least one, combined pin tumbler to be coupled to the edge of the key; the option is contemplated in which each combined pin tumbler has a different height between the rest of the pin tumblers, configuring a key for opening and closing the permitting or blocking of the relative movement between the barrel and the drum. Likewise, each combined pin tumbler can be located in different positions along the key edge according to the drum and barrel cavities; there may also be the option in which each combined pin tumbler can be oriented inwards or outwards of the drum; reconfiguring a key for opening and closing the permit or block the relative movement of the barrel and drum.

Therefore, according to the described invention, the lock cylinder device of the invention constitutes an important novelty, since it allows to obtain a secure blockage of any type of physical entity that can be closed; so that it makes extremely difficult the forced opening by third parties of such physical entities; and all this through a simple configuration device.

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Description of the drawings

To complement the description that is being made, and in order to help a better understanding of the characteristics of the invention, according to a preferred example of practical implementation thereof, a series of drawings is attached as an integral part of said description. where, for illustrative and non-limiting purposes, the following has been represented:

Figure 1 shows a three-dimensional view of a preferred embodiment of the lock cylinder device object of the invention.

Figure 2 shows a three-dimensional view similar to that shown in Figure 1, where the barrel and drum are shown with transparency, in order to observe the location of the pin tumblers and against pin tumblers.

Figure 3 shows a two-dimensional sectional view similar to that shown in Figure 2, with the key housed in the drum of the lock cylinder device object of the invention.

Figure 4 shows a three-dimensional sectional view similar to that shown in Figures 2 and 3, with the key housed in the drum of the lock cylinder device object of the invention.

Figure 5 shows a three-dimensional view of a cross-section of the lock cylinder device object of the invention, in which the key is in the insertion phase inside the drum.

Figure 6 shows a two-dimensional detail of a cross-section of the lock cylinder device object of the invention, in which the key is in the insertion phase inside the drum, being similar to that shown in Figure 5.

Figure 7 shows a three-dimensional view of the key belonging to the lock cylinder device object of the invention, observing a pair of housing cavities of the combined pin tumblers.

Figure 8 shows a series of two-dimensional views of the combined pin tumblers of the lock cylinder device object of the invention.

Preferred Embodiment of the Invention

In view of Figures 1 to 6, it can be seen how the lock device object of the invention comprises:

- A pair of barrel (1) and drum (2) coupled together respectively; There is an intermediate locking element that can be released independently with the release of the first pair of barrel (1) and rotor (2).

- Each drum (2) has a cylindrical geometry, and each barrel (1) has a cylindrical cavity configured to couple said drum (2) inside said barrel (1); allowing a relative movement between two bodies through the axis of revolution (10) of the cylindrical geometry of the drum (2).

- Likewise, each drum (2) has a cavity (9) configured to allow the partial accommodation of a key (3) responsible for blocking or unlocking a relative rotation between said barrel (1) and the drum (2).

- Each barrel (1) has at least one pair of pin tumblers (6) and against combined pin tumblers (5) coupled to each other through respective elastic elements (4), the drum (2) presenting at least one pair of recesses in line with the location of said pairs of combined pin tumblers (6) and against pin tumblers (5), and allowing contact between each key (3) and said pin tumblers (6) combined and assisted by the respective elastic elements (4).

- In relation to Figures 1 and 7, it can be seen that the portion of the key (3) to be introduced in the respective cavity (8) of the drum (2) has two larger faces (3b, 3c) and one edge (3a) , wherein said edge (3a) comprises at least one pair of cavities (8) configured to accommodate and push said pair of pin tumblers (6) combined towards the respective ones against corresponding pin tumblers (5), defining a specific spatial position of joint between two combined pin tumblers (6) and against pin tumblers (5), which allows relative movement between said cannon (1) and drum (2) when corresponding to the joint plane between the barrel (1) and the drum (2).

- Also, and in relation to Figures 1 to 6, it can be seen how each barrel (1) comprises a plurality of pairs of pin knockers (11) and pin tumblers (12) located orthogonally with respect to said two pairs of Combined pin tumbler (6) and against pin tumblers (5) to be coupled to the edge (3a) of the key (3); and wherein said key (3) has on both major faces, a plurality of cavities (13) in correspondence with the number and corresponding geometry of the plurality of pairs of pin tumblers (12) and against pin tumblers (11).

Additionally, and in view of Figure 8, it is observed how each pin tumbler (6) combined to be coupled to the edge (3a) of the key (3) has two protuberances (6a, 6b) joined together by a cord ( 6c); and in view of Figure 7, it is observed how the edge (3a) of the key (3) has a pair of housings (3d, 3e) joined together by a channel (3f), in correspondence with said pair of protrusions ( 6a, 6b) and said cord (6c) of said combined pin tumbler (6) respectively.

Likewise, each combined pin tumbler (6) has a different height between the rest of the combined pin tumblers, configuring an opening and closing key for allowing or blocking the relative movement between the barrel (1) and the drum (2) of the lock.

Therefore, each of the protuberances (6a, 6b) of the at least one pin tumbler (6) combined to fit in the edge (3a) of each key (3), has different dimensions (A, B) between they; and where each of the housings (3d, 3e) configured to contain said protuberances (6a, 6b) have different dimensions between them respectively. The distance (E) between both protuberances (6a, 6b) being variable depending on the design of the channel (3f) of each key (3).

In view of this description and set of Figures, the person skilled in the art will be able to understand that the embodiments of the invention that have been described can be combined in multiple ways within the object of the claimed invention. The invention has been described in accordance with some preferred embodiments thereof, but it will be apparent to the person skilled in the art that multiple variations can be introduced into said preferred embodiments without exceeding the object of the claimed invention.

Claims (9)

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Cylinder device and a cylinder key (3), said cylinder device comprising a barrel (1) and a drum (2) coupled to each other; wherein the drum (2) has a cavity (9) configured to allow the housing, at least partially, of a cylinder key (3) responsible for blocking or unlocking a relative rotation between said barrel (1) and drum (2 ); wherein the barrel (1) comprises at least one pair of counter pin tumblers (5) and combined pin tumblers (6) coupled to each other through at least two elastic elements (4), said elements (4) being elastics responsible for elastically joining the pin tumbler (6) combined with their respective against pin tumblers (5), and allowing contact between the cylinder key (3) and said, at least one, combined pin tumbler (6) assisted by said elastic elements (4); and the device and the key being characterized in that the portion of the cylinder key (3) to be introduced into the cavity (8) of the drum (2) has two faces (3b, 3c) and two edges (3a), where said edges (3a) comprise at least one cavity (8) having at least one pair of housings (3d, 3e) joined together by a channel (3f), where said cavity (8) is configured to house and push said at least a, pin tumbler (6) combined towards the corresponding pin tumblers (5), wherein said combined pin tumbler (6) has at least two protrusions (6a, 6b) joined together by a cord (6c), where said protuberances (6a, 6b) are in correspondence with the pair of housings (3d, 3e) of the cavity (8) of the cylinder key (3), such that the pin tumbler 86) is capable of tilting with with respect to an axis parallel to the contact plane between said pin tumbler (6) combined against pin tumblers (5), defi having a specific spatial position to join the respective combined pin tumbler (6) and the counter pin tumblers (5), which allows relative movement between said barrel (1) and the drum (2) when corresponding to the plane of union between the barrel (1) and the drum (2). 2. Cylinder device and cylinder key, according to claim 1, characterized in that each of the protuberances (6a, 6b) has different dimensions (A, B) between them; and in which each of the housings (3d, 3e) configured to contain said protuberances (6a, 6b) has different dimensions between them respectively. 3. Cylinder device and cylinder wrench, according to any of the preceding claims, characterized in that the barrel (1) comprises a plurality of pairs of counter knockers (11) and pin tumblers (12) located orthogonally with respect to said, at least one pair of pin tumblers (6) and against pin tumblers (5) combined to be coupled to the edge (3a) of the cylinder key (3); and wherein said cylinder key (3) has at least one of its faces, a plurality of cavities (13) in correspondence with the number and corresponding geometry of the plurality of pairs of pin tumblers (12) and against pin tumblers (11). 4. Cylinder device and cylinder key, according to any of the preceding claims, characterized in that the drum (2) has a cylindrical geometry, and the barrel (1) has a cylindrical cavity (8) configured to couple said drum ( 2) inside said barrel (1), allowing relative movement between two bodies through the axis of revolution (10) of the cylindrical geometry of the drum (2). 5. Cylinder device and cylinder key, according to any of the preceding claims, characterized in that it has a plurality of pairs of combined pin tumblers (6) and against pin tumblers (5); in which each combined pin tumbler (6) has a different height from the rest of the pin tumblers, configuring a key for opening and closing the permitting or blocking of the relative movement of the barrel (1) and drum (2). 6. Cylinder device and cylinder key, according to any of the preceding claims, characterized in that it has a plurality of pairs of combined pin tumblers (6) and against pin tumblers (5); in which each combined pin tumbler (6) is located in different positions along the edge (3a) of the cylinder wrench (3) aligned by the drum cavities (2) and the barrel (1), configuring a key for opening and closing the permitting or blocking of the relative movement barrel (1) and drum (2). 7. Cylinder device and cylinder key, according to any of the preceding claims, characterized in that it has a plurality of pairs of combined pin tumblers (6) and against pin tumblers (5); in which each combined pin tumbler (6) is oriented towards the inside or outside of the drum (2), configuring a key for opening and closing the permitting or blocking of the relative movement of the barrel (1) and drum (2). 8. Cylinder device and cylinder key (3), according to claim 1, characterized in that it has two faces (3b, 3c) and two edges (3a), characterized in that each of the housings (3d, 3e) of said cavity (8) has different dimensions between two housings (3d, 3e) respectively. 9. Cylinder device and cylinder key (3), according to claims 1 and 8, characterized in that the channel (3f) joining said at least one pair of housings (3d, 3e) has a section with notches of variable area.