EP2022912B1 - Key, for lock, with static inserts - Google Patents

Abstract

The key has a flat pallet (1) including a static false insert (2) provided with a base (2a) on which a projection (2b) is formed. The projection takes a spatial position determined by its co-ordinates in length and width of the flat pallet and by height of the projection. The projection is collectively operated with an active combining stud (4) that is situated in a lock cylinder (3). The insert is situated and fixed in a reciprocal notch using welding or adhesive. The projection is centered and off-centered with respect to the base of the insert.

Description

FIELD OF THE INVENTION

This invention relates to a lock key according to the preamble of claim 1. Such a key is known from the document EP 1 106 756 A and incorporates means to avoid unauthorized copying. This type of key is generally called "non-reproducible", in the sense that it incorporates devices that make it difficult to copy.

STATE OF THE PRIOR ART

In this field, various non-reproducible keys are known that can be indexed in two classes.

A class is that which is designated by the term "multi-striae" keys, given the multiple function assigned to the streaks or longitudinal channels that the pallet of the key has in reciprocity with the existing channel in the cylinder for the introduction of the latter; in the conventional keys, the streaks do not fulfill an active introduction function to establish the opening key, they simply serve to accept or not the introduction of the key, accepting all keys that have the same streak profile or a profile inscribed in the latter and allowing the opening turn only to those which have, in addition, a tooth notch adequate for a certain combination of sets of active pads of the cylinder of the lock; on the other hand, the multi-groove wrenches have ridges with special milled shapes, giving the pallet a larger size, thus allowing to incorporate elements that are also actively involved in the opening combination. This type of multi-streak key has vulnerable points: on the one hand the possibility that there are keys thin enough to be able to enter the cylinder, without assuming a falsification of the shape of the multi-streaks, and with a notch adequate obtained by fraudulent copy, be able to open this cylinder; on the other hand on the market we can find machines to copy the streaks that are in the hands of small industrial key copiers.

Another class of keys is one whose pallets incorporate moving elements capable of working in combination with active pads housed in the cylinder. This guy This solution results in complex and expensive mechanisms that may be acceptable for major facilities and for dressage, but which are excessive for the home and other smaller facilities.

EXPLANATION OF THE INVENTION AND BENEFITS

Faced with this state of affairs, this invention proposes a lock key with static inserts which has a flat pallet with means for establishing the opening key formed in its major faces, including the flat pallet, in at least one of said faces. major, has, at least, a false static insert which comprises a base on which raises a projection which occupies a spatial position determined by its coordinates in the length and width of the flat pallet, as well as by its height, whose protrusion is capable of operating together with an active combination pad located in a corresponding lock cylinder, and whose false static insert is located in a reciprocal notch of the flat pallet, where the false static insert is fixed by riveting, by welding or by means of an adhesive.

This solution allows a large amount of combinations for the making of different keys, which depend on the number of false inserts fixed on the pallet, positions where they are located in the length and width of the pallet, which is the projection on the base on which it stands and the height of each projection individually and in conjunction with other existing projections in the pallet, when there are several.

On the one hand, this wide variety of possible combinations complicates the cost-effective copy for falsifiers, since the vision of a cylinder installed, even holding it in the hand, does not identify the model of the key-insert system required. to falsify the key; and since the false insert acts on an internal active pad of the cylinder, in the falsification, this false insert must coincide exactly in terms of position and shape with that of the original valid key. For greater difficulty, the assembly of a second false insert of a greater length that the first, and with its set of corresponding active pads in the cylinder, prevents that, even by copying the visible form of the channel of the cylinder for the insertion of the key, one can falsify the key, since this second false insert will block the cylinder opening turn and it is not possible to know the quantity and position of the false inserts mounted in the key only by seeing the shape of this key channel in the cylinder.

On the other hand, the arrangement of the false inserts allows a conventional flat pallet wrench to be transformed into a multi-stria type key without having to resort to the machining of special stria forms which, by their nature, are manufactured in small series that involve a considerable capital cost and complicate storage and logistics. While with the proposed solution we obtain a functionality equivalent to that of the multi-striations by allowing, that the final configuration of the key is given at the time of its shipment to the customer, which confers a great flexibility of production with reduction of the inventory and capital costs.

On the other hand, this solution based on false inserts with variable selective location is much cheaper and simpler than the arrangement of moving parts in the pallet of the key, and it can not be performed by machining machines. streaks (re-strious) existing on the market.

The invention includes a wide range of alternative embodiments; as regards the false static insert it will be noted that: the height of the false static insert is such that it is apparent from the plane of the corresponding major face of the flat pallet; or the height of the false static insert is such that it does not emerge from the plane of the corresponding major face of the flat pallet; or, the height of the false static insert is such that remains under the plane of the corresponding major face of the flat pallet.

Concerning the base of the false insert, variants of embodiments in which: the base of the false static insert is not a piece of revolution, which allows to play with its rotation position with combinatorial effects, as well as for determine a specific operational position; or the base of the false static insert is a piece of revolution.

Regarding the situation of the projection erected on the base it is envisaged that said projection of the false static insert is off-center with respect to the base; or that said projection of the false static insert is centered relative to the base.

Regarding the situation of the false static insert as a whole, according to the invention the following alternatives are envisaged: the false static insert is located in the fluted part of the flat pallet or, outside this fluted part, in the material zone of greater thickness of the flat pallet.

DRAWINGS AND REFERENCES

• La figure 1 est une vue en perspective d'une clé selon l'invention qui comprend un détail agrandi d'un faux insert statique (2) qui correspond à l'insert (2) entouré dans la section d'un cylindre de serrure (3) dans lequel la clé concernée est insérée, cette section incorporant à son tour un détail agrandi du faux insert statique (2) entouré. Dans cette figure la base (2a) du faux insert statique (2) n'est pas de révolution et la saillie (2b) de ce dernier est décentrée.
• La figure 2 montre en perspective la clé de la figure 1 avec un détail agrandi d'un autre mode d'exécution du faux insert statique (2), où la base (2a) est une pièce de révolution et où la saillie (2b) est centrée.
• La figure 3 montre la clé de la figure 1, en projection orthogonale, en vue de face par rapport à une face majeure de sa palette plate (1).
• La figure 4 est un agrandissement de la section IV-IV indiquée sur la figure 3.
• La figure 5 est un agrandissement de la section V-V indiquée sur la figure 3.

To better understand the nature of the invention, in the accompanying drawings is shown an industrial embodiment given by way of example merely illustrative and not limiting.

• The figure 1 is a perspective view of a key according to the invention which comprises an enlarged detail of a false static insert (2) which corresponds to the insert (2) surrounded in the section of a lock cylinder (3) in the key concerned is inserted, this section incorporating in turn an enlarged detail of the false static insert (2) surrounded. In this figure the base (2a) of the false static insert (2) is not of revolution and the projection (2b) of the latter is off-center.
• The figure 2 shows in perspective the key to the figure 1 with an enlarged detail of another embodiment of the false static insert (2), wherein the base (2a) is a part of revolution and where the projection (2b) is centered.
• The figure 3 shows the key to the figure 1 , in orthogonal projection, in front view with respect to a major face of its flat pallet (1).
• The figure 4 is an enlargement of section IV-IV shown on the figure 3 .
• The figure 5 is an enlargement of the VV section shown on the figure 3 .

• 1. - Palette plate
• 1a. - Entaille dans la palette plate (1)
• 2. - Faux insert statique
• 2a. - Base du faux insert statique (2)
• 2b. - Saillie du faux insert statique (2)
• 3. - Cylindre de serrure pour palette plate (1)
• 4. - Plot actif dans le cylindre de serrure

In these figures are indicated the following references:

• 1. - Flat pallet
• 1a. - Notch in the flat pallet (1)
• 2. - False static insert
• 2a. - Base of the false static insert (2)
• 2b. - projection of the false static insert (2)
• 3. - Lock cylinder for flat pallet (1)
• 4. - Active Plot in Lock Cylinder

DESCRIPTION OF AN EMBODIMENT

With respect to the drawings and references listed above, the attached drawings show an embodiment of the subject matter of the invention, relating to a lock key with static inserts which, as shown in FIG. figure 1 , has a flat pallet (1) with means for establishing the opening key formed in its major faces. On this figure 1 is represented the essence of the invention, consisting in that the flat pallet (1), on at least one of its major faces, has, at least, a false static insert (2) which comprises a base (2a) on which raises a projection (2b) which occupies a spatial position determined by its coordinates in the length and width of the flat pallet (1), as well as by its height, the protrusion (2b) of which is capable of operating jointly with an active engagement pad (4) located in a corresponding lock cylinder (3), and whose false static insert (2) is located in a reciprocal cut (1a) of the flat pallet (1), where this false insert static (2) is fixed by riveting, by welding or by means of an adhesive.

Among the variant embodiments of this invention; the figure 1 , as well as figure 4 , represents a variant in which the height of the false static insert (2) is such that it is in relief relative to the plane of the corresponding major face of the flat pallet (1), in which the base (2a) of the false insert static (2) is not a part of revolution, and in which the projection (2b) of the false static insert (2) is off-center with respect to the base (2a).

Another variant of execution is that which is represented on the Figures 2 and 5 , where this base (2a) of false static insert (2) is a piece of revolution, and the projection (2b) of the false static insert (2) is centered with respect to the base (2a).

Of course, by extension, other possible embodiments (not shown) and combinable with each other, include an option in which the height of the false static insert (2) is such that it is not raised relative to the plane of the corresponding major face of the flat pallet (1); or in which the height of the false static insert (2) is such that it remains under the plane of the corresponding major face of the flat pallet (1).

Situational options are also considered in which this false static insert (2) is located in the fluted part of the flat pallet (1) or, outside this fluted part, in a zone of material with a greater thickness of the flat pallet (1); on the attached figures we opted for the first of the options indicated.

Claims (7)

1. A lock key with static inserts, the key being of the type comprising a flat blade (1) with means for constituting the opening key being formed in its major faces, the flat blade (1) possessing at least one false static insert (2) in one or each of its major faces, the key being characterized in that the false static insert (2) comprises a base (2a) from which there extends a projection (2b) that occupies a three-dimensional spatial position that is determined by its coordinates along the length and across the width of the flat blade (1), and also by its height, the projection (2b) being suitable for operating jointly with an active tumbler pin (4) situated in a corresponding lock cylinder (3), and the false static insert (2) being situated in a complementary indentation (1a) in the flat blade (1) where the false static insert (2) is secured.
2. A lock key with static inserts according to claim 1, characterized in that the height of the false static insert (2) is such that it projects relative to the plane of the corresponding major face of the flat blade (1).
3. A lock key with static inserts according to the preceding claims, characterized in that the base (2a) of the false static insert (2) is not revolutionary symmetrical.
4. A lock key with static inserts according to claims 1 and 2, characterized in that the base (2a) of the false static insert (2) is revolutionary symmetrical.
5. A lock key with static inserts according to claim 1, characterized in that the projection (2b) of the insert (2) is off-centered relative to the base (2a).
6. A lock key with static inserts according to claim 1, characterized in that the projection (2b) of the false static insert (2) is centered relative to the base (2a).
7. A lock key with static inserts according to claim 1, characterized in that the height of the false static insert (2) is such that it does not project relative to the corresponding major face of the flat blade (1).

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