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(11) | EP 3 412 854 A1 |
| (12) | EUROPEAN PATENT APPLICATION |
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| (54) | LOCK FOR DOORS OF VEHICLES |
| (57) A lock for doors of vehicles, of the type of vans, trucks, lorries, semitrailer trucks,
trailers and the like, which comprises: a base (2) that comprises a flat slab (2a)
that can be stably applied to a door of the vehicle, the door being usually arranged
in a configuration to close an opening provided in a containment structure of the
vehicle, of the type of a body and the like; a lever (3) for moving a spring latch
(4), which can move between at least one protruding position, in which it can engage
with a retention element arranged along the containment structure, in order to keep
the door in the closed configuration, and at least one position in which it is retracted;
an assembly (5) for coupling and mutual decoupling of the lever (3) and of the spring
latch (4), which can be selectively actuated by way of a respective key-operated contrivance
(6); an outer shell (7), coupled by interlocking, directly or indirectly, with the
base (2), for covering and protecting the base (2) and the assembly (5); the shell
(7) comprises a main plate (7a), which has an outline that is adapted to cover the
slab (2a) and is folded along the edges, in order to define a perimetric band (7b)
placed on the slab (2a); the base (2) comprises an end lug (2b), which is folded with
respect to the slab (2a) and is stably anchored, by way of first fixing means (8)
such as screws, nails, and the like, to an end lip (7c) of the shell (7), which is
folded with respect to the plate (7a) and is arranged at a break in continuity of
the band (7b), which is provided in order to allow the transit of the spring latch
(4).
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[0002] As is known, vehicles for professional use, such as vans, trucks, lorries, semi-trailer trucks, trailers and the like, are usually provided with a closed body, which is rendered integral with the chassis of the vehicle and which defines inside it a compartment for accommodating goods of a various nature.
[0003] Access to the compartment is controlled by a swinging door, arranged at an opening provided in the rear wall or in a lateral wall of the body. During movement of the vehicle, and in any case when it is desired to prevent access to the compartment, the door is kept in the closed configuration of the opening by a lock, mounted on the external facade of the door proper.
[0004] The lock in fact is provided with a spring latch that, when the door is in the closed configuration, can be engaged under a roller arranged in a recess provided on the wall, along a lateral edge of the opening. Thus, the roller prevents any subsequent movement of the spring latch and therefore of the door, thus keeping the latter so as to close the opening.
[0005] The lock also has an actuation lever, which can be gripped and made to rotate by the user, in order to command the translation of the spring latch and enable the door to be opened.
[0006] Such type of lock is usually accompanied by other contrivances and accessories, including in particular a system that couples and decouples the spring latch to/from the lever on command, in order to allow the door to be opened only by the holder of a key (which is necessary to render the spring latch and the lever at least temporarily integral).
[0007] Solutions of this type are widespread in many categories of professional vehicles, including for example in vehicles intended for transporting frozen goods or goods that in any case require conservation in a refrigerated compartment.
[0008] However, independently of the specific field of application, the locks described above are not devoid of drawbacks.
[0009] It should be noted in fact that usually the lock comprises a first plate which is rendered integral with the door, on which the spring latch can slide in a guided manner and on which some components of the system for coupling and decoupling mentioned above are likewise mounted.
[0010] On the first plate a contoured second plate is then applied, which supports the lever so that it can rotate and which covers the aforementioned system, protecting it from atmospheric agents and, especially, from possible attempts at tampering.
[0011] The mutual coupling of the two plates is ensured by a plurality of screws, which are inserted into respective aligned slots provided along the perimeter of the two plates.
[0012] When installation is complete, and therefore during normal use of the vehicle, such screws are kept exposed, resulting in an aesthetic effect that an increasingly significant segment of the market considers undesirable.
[0013] Furthermore, since each one of the two plates is responsible for supporting one or more functional components of the plate (the spring latch, the lever, the system for coupling and decoupling, etc.), evidently any modification to the outer plate (which determines the aesthetic impact of the lock) must be carefully evaluated (and is often impossible), because it could compromise the very functionality of the lock.
[0014] This makes it impossible to customize locks, which is an activity that is increasingly often of interest to manufacturers, who want to be able to adapt the appearance of the lock to the appearance of the specific vehicle, or in any case to give a more attractive or distinctive line to its products.
[0015] Furthermore, although we have already noted that the second plate performs a function of protecting the system for coupling and decoupling, the lever is still rotatably supported by the second plate at a pin that is kept visible and accessible from outside, like the aforementioned screws. Such pin and the screws can therefore potentially be attacked by ill-intentioned individuals and in any case they are constantly exposed to atmospheric agents (and therefore they are subject to wear and deterioration).
[0016] The aim of the present invention is to solve the above mentioned problems, by providing a lock that offers an attractive design and in which screws, or similar fixing elements, are not exposed.
[0017] Within this aim, an object of the invention is to provide a lock that can easily be customized.
[0018] Another object of the invention is to provide a lock that ensures complete and effective protection of its functional components, against atmospheric agents and any attempts at forcing.
[0019] Another object of the invention is to provide a lock that ensures a high reliability of operation, is compact, and mechanically very strong.
[0020] Another object of the invention is to provide a lock that adopts an alternative technical and structural architecture to those of conventional locks.
[0021] Another object of the invention is to provide a lock that can be easily implemented using elements and materials that are readily available on the market.
[0023] This aim and these and other objects which will become better apparent hereinafter are all achieved by a lock according to claim 1.
[0024] Further characteristics and advantages of the invention will become better apparent from the description of a preferred, but not exclusive, embodiment of the lock according to the invention, which is illustrated by way of non-limiting example in the accompanying drawings wherein:
Figure 1 is a perspective view from the front and side of the lock according to the invention;
Figure 2 is a perspective view from the rear and side of the lock of Figure 1;
Figure 3 is a view from above of the lock of Figure 1;
Figure 4 is a partially exploded perspective view from the front and side, substantially of the lock of Figure 1;
Figure 5 is a partially exploded perspective view from the rear and side, substantially of the lock of Figure 1;
Figure 6 is a view from above of the base and some other components of the lock of Figure 1;
Figure 7 is a view from above of the shell of the lock of Figure 1.
[0025] With particular reference to the figures, the reference numeral 1 generally designates a lock for doors of vehicles. Such vehicles are typically for professional use, and therefore of the type of vans, trucks, lorries, semi-trailer trucks, trailers and the like. In such context therefore, the vehicles that are the (preferred, but not exclusive) application of the lock 1 have a containment structure, such as a body or the like, which internally defines a compartment for the accommodation and transport of goods of various types.
[0026] In more detail, the typical application of the lock 1 is for (doors of) vehicles intended for transporting frozen goods or goods that in any case require conservation in refrigerated compartments. However, it must again be pointed out that such use is cited purely for the purposes of non-limiting example, since the protection claimed herein should be understood to include the application of the lock 1 on any type of vehicle, be it for professional or other use.
[0027] Access to the containment structure is controlled by a door, which is usually arranged in a configuration for closing an opening provided along the rear face or along one of the side faces of the structure proper. The containment structure and the door are conventional, and in any case are not part of the invention: for the sake of simplicity they are therefore not shown in the accompanying figures, being in any case easily deducible for any person, skilled or otherwise, in the sector.
[0028] The lock 1 comprises a base 2 which in turn comprises a flat slab 2a, which can be stably applied to the door of the vehicle (usually along a side of the door proper, so as to be adjacent to a side of the opening, when the latter is closed by the door).
[0030] Following the rotation of the lever 3, the spring latch 4 can move between at least one position in which it is protruding (in which it is shown in the accompanying figures) and at least one position in which it is retracted.
[0031] In the protruding position, the spring latch 4 (which extends beyond the contour of the rest of the base 2) can engage with a retention element arranged along the containment structure (along the corresponding side of the opening), in order to keep the door in the closed configuration.
[0032] For example, the retention element can be a bar or a roller, and be mounted in a recess located along the side of the opening: when the door is in the closed configuration, the spring latch 4 is inserted into the recess and the retention element, by interference, opposes its movement (for as long as the protruding position is maintained), and therefore opposes the rotation of the door.
[0033] But when the spring latch 4 is in the position in which it is retracted, the retention element does not interfere with its path, thus allowing the door to be opened.
[0034] In order to allow only the designated user to open the door (and therefore access the internal compartment of the body), the lock 1 also comprises an assembly 5 for coupling and mutual decoupling of the lever 3 and of the spring latch 4. The assembly 5 can be selectively actuated by way of a respective key-operated mechanism 6.
[0035] Only the holder of the key therefore can impose the mutual mating of the lever 3 and of the spring latch 4, in order to cause the transition of the latter to the position in which it is retracted and so permit the opening of the door: in the absence of the key, the spring latch 4 can be kept uncoupled from the lever 3, and in such condition any actuation of the latter (which can still move) does not determine any movement of the former.
[0036] Furthermore, the lock 1 comprises an outer shell 7, which is coupled by interlocking, directly or indirectly, with the base 2 (on the opposite side with respect to the door), in order to cover and protect (at least) the base 2 and the assembly 5. If coupling is direct, then the shell 7 is coupled by interlocking with the base 2 proper, while if coupling is indirect (as in the accompanying figures), the shell 7 is coupled by interlocking with an additional component, which in turn is integral with the base 2.
[0037] According to the invention, the shell 7 comprises a main plate 7a, which has a shape adapted to cover the slab 2a. As in the accompanying figures, such condition is for example obtained by arranging the plate 7a directed toward the slab 2a, and giving the former a shape that substantially corresponds to the latter. In any case, any shape of the plate 7a that covers the slab 2a (when installation is complete) is to be considered covered in the scope of protection claimed herein.
[0038] The plate 7a is folded along the edges, so as to define a perimetric band 7b, which is placed on the (peripheral region of the) slab 2a. The band 7b extends preferably perpendicularly to the plate 7a and to the slab 2a (but it can also be differently inclined with respect to them).
[0040] By way of first fixing means 8, such as screws, nails and the like, the end lug 2b is stably anchored to an end lip 7c of the shell 7, which is folded with respect to the plate 7a and is arranged at a break in continuity of the band 7b, which is provided in order to allow the transit of the spring latch 4 (under the lip 7c).
[0041] The first means 8 therefore consolidate the interlocking coupling mentioned in the previous paragraphs in order to obtain the stable mutual coupling between the base 2 and the shell 7.
[0042] The accompanying figures (purely for the purposes of example) illustrate an embodiment in which the first means 8 are constituted by two bolts, in which the respective nuts 8a are fixed inside the lip 7c, with the corresponding screws being inserted from outside.
[0043] In this regard, it should likewise be noted that the first means 8 can be in any quantity and be (preferably) sold with the lock 1 or supplied separately.
[0044] Furthermore, it should be noted that the lock 1 can be supplied or sold already including second fixing means 9, for anchoring the slab 2a to the door, or it can be sold without them. In the latter (preferred) case therefore, it is left to the user or the installation technician to source, separately, the second means 9, which in any case can be of the same type as the first means 8 or different, and they can also be in any quantity, according to the specific requirements.
[0045] In any case, and as can be seen from the figures, the first means 8 are inserted into the lip 7c and into the lug 2b, mutually tightening them: by virtue of the choice to fold such components with respect to the slab 2a and to the plate 7a, the first means 8 are not exposed to view by an observer standing in front of the door, and the second means 9 are even less exposed to view, as they are completely hidden by the shell 7 (by the plate 7a that covers the slab 2a, into which the second means 9 are inserted).
[0046] This therefore makes it possible to achieve the set aim from this point onward: of the lock 1, the user/observer can usually see only the shell 7 (as it is seen for example in Figure 3), thus obtaining an attractive design in which the fixing means 8, 9, are not exposed to view.
[0047] In this regard, it should be noted that in the accompanying figures a (preferred) solution is shown in which the end lug 2b defines an angle of approximately ninety degrees with respect to the slab 2a (and to the door): such inclination makes it possible to keep the first means 8 hidden from view by an observer who is standing in front of the door. It should be noted in any case that several different inclinations can be chosen, all of which are included in the scope of protection claimed herein, if they are capable of keeping the first means 8 hidden from view.
[0048] Advantageously, an end tab 10 of the plate 7a extends co-planar beyond the lip 7c, and beyond the outline of the slab 2a. In this manner, the end tab 10 offers protection to the lug 2b and to the spring latch 4, when the latter is arranged in the protruding position. This prevents or at least complicates any attempts at forcing, since it makes it impossible or in any case problematic to access the recess, the area occupied by the spring latch 4 and the first fixing means 8, which are inserted into the lug 2b.
[0049] Advantageously, the shell 7, the band 7b and the tab 10 are provided in a single piece, preferably made of steel or sheet metal, and for example by molding or plastic deformation, thus ensuring maximum compactness and mechanical strength. In the preferred embodiment however, the lip 7c is spot-welded to the shell 7.
[0050] However, the possibility is not ruled out of obtaining the shell 7 and/or the other components in other ways and/or with other materials, while remaining within the scope of protection claimed herein. The base 2 also is preferably, but not exclusively, made of steel or sheet metal.
[0051] Positively, the inner surface of the tab 10, directed toward the slab 2a and the spring latch 4, is lined with at least one layer 10a of elastically deformable material. The layer 10a can thus deaden shocks and noise that may be caused by impact with the retention element, in the event of violent closing of the door.
[0052] It should be noted that the layer 10a can be constituted by a form of cushion that protrudes internally, to a considerable extent, from the profile of the shell 7, and of the tab 10 in particular. Or, as in the enclosed solutions, the tab 10 can have a concavity inside it, in which therefore it can accommodate the layer 10a, which in this case protrudes only slightly from the profile of the shell 7.
[0053] Preferably (but not exclusively), the layer 10a is made of rubber (or in any case made of elastomeric material), be it natural or synthetic.
[0054] In the embodiment shown for the purposes of non-limiting example in the accompanying figures, the lock 1 comprises a pillar 11 for rotatably supporting the lever 3. The pillar 11 is stably anchored to the slab 2a and is provided with a seat for the insertion of an articulation pin 12 of the lever 3. For example, as in the accompanying figures, the seat can be constituted by two eyelets that are mutually aligned along the rotation axis of the lever 3.
[0055] Even more specifically, the perimetric band 7b has a contoured aperture 13 which is provided on the side opposite the lip 7c. The aperture 13 is shaped complementarily to a corresponding lateral wall 11a of the pillar 11, so as to be able to achieve the coupling by interlocking of the shell 7 with the pillar 11, and therefore indirectly with the base 2. In the preferred embodiment (illustrated in the accompanying figures), the coupling by interlocking between the shell 7 and the base 2 is therefore indirect, by virtue of the pillar 11 which is coupled to the shell 7 and is integral with the base 2.
[0056] Conveniently, the pillar 11 also comprises two protrusions 11b (Figure 5) which extend transversely from the lateral wall 11 a, outward, and which define two aligned slots 11c for the insertion of a padlock 14 (Figure 2). The padlock 14 can also be supplied by with the lock 1 or sourced separately.
[0057] With further reference to the preferred, but not limiting embodiment of the application of the invention, the aperture 13 of the band 7b extends into the plate 7a, so as to define an opening, arranged at the pillar 11, in order to accommodate an end region of the lever 3.
[0058] It should be noted therefore that, differently from conventional solutions, the lever 3 is coupled solely to the base 2 (through the pillar 11 and the articulation pin 12), while it does not interact in any way with the shell 7, thus ensuring a solution that is more compact and better protected against attempts at forcing, since the pin 12 and the portion of the lever 3 articulated thereto are hidden and protected by the shell 7 (as can also be seen from Figure 1).
[0059] In the embodiment in the accompanying figures, which are illustrative and non-limiting, the key-operated mechanism 6 comprises a rotor 15 that is rotatably accommodated in a stator 16 that is supported by the plate 7a. A first end of the rotor 15, protruding from the stator 16 and directed toward the slab 2a (therefore inside the lock 1) rigidly supports a cam 17 for driving the coupling and decoupling assembly 5.
[0060] A second end of the rotor 15, arranged opposite the first end and facing outward at an orifice 18, provided in the plate 7a, is provided with a cut 19 for the insertion of a key, in order to command the rotation of the rotor 15 and of the cam 17.
[0061] It should therefore be noted that the rotor 15 and the stator 16 are effectively contained entirely inside the lock 1, the only part thereof facing outward being the second end of the rotor 15, containing the cut 19: this constitutes an additional assurance against deterioration and damage.
[0062] With further reference to the solution in the accompanying figures, which are non-limiting of the scope of protection claimed herein, the coupling and decoupling assembly 5 comprises a slider 20 that can slide along the slab 2a, in alignment with the spring latch 4, as a consequence of the rotation imposed on the lever 3. In practice, the connection between the lever 3 and the slider 20 can be achieved in any manner, including using conventional techniques.
[0063] The slider 20 is made integral with the spring latch 4 by a rod 21, when the latter is fitted in respective openings of the slider 20 and of the spring latch 4. The rod 21 can move transversely to the sliding direction of the slider 20 as a consequence of the rotation of the cam 17, in order to disengage from the spring latch 4 and achieve the decoupling of the latter from the lever 3, and vice versa.
[0064] In more detail, the rod 21 is interposed between two wings 22, on each of which the cam 17 can act to move the rod 21 in the two directions.
[0065] The rod 21 is coupled to a single wing 22 (as can be seen in Figure 6), while it is separated from the other one by a break in continuity (not visible in the accompanying figures): when such break is aligned with the slider 20 (as shown in Figure 6), this results in the decoupling between the slider 20 and the spring latch 4.
[0067] Maintaining the closed configuration of the door of the vehicle is ensured by the spring latch 4, which in the protruding position engages with the retention element arranged in a recess provided along the containment structure (along the body), proximate to the opening.
[0068] By virtue of for example the action of a spring (accommodated inside the lock 1), or the like, the spring latch 4 is kept in such position, until the lever 3 is actuated, which causes the sliding of the spring latch 4 to the retracted position and allows the movement of the door.
[0069] It has further already been seen that the lock 1 also comprises a key-operated mechanism 6, which needs to be activated in order to allow the coupling of the lever 3 (through the slider 20) with the spring latch 4, and therefore permit the disengagement of the latter from the retention element as a consequence of the rotation of the lever 3 proper. In the absence of the key in fact, the lever 3 is still free to rotate, but without transmitting any movement to the spring latch 4.
[0070] As also apparent from the accompanying figures, the lock 1 is provided externally with a shell 7, which touches the slab 2a of the base 2 (and the door) with its perimetric band 7b. The coupling of the shell 7 to the base 2 is obtained right along the flanks (not visible to a user/observer standing in front of the door), where the interlocking occurs between the band 7b (with its aperture 13) and the pillar 11 and where, on the opposite flank, the first means 8, which mutually tighten the lug 2b and the lip 7c, act, consolidating the coupling by interlocking.
[0071] In observing that the second means 9 are also hidden from view by users (because they are covered by the plate 7a of the shell 7), it can immediately be seen that the lock 1 according to the invention does not present exposed screws or similar fixing elements, thus ensuring an attractive design defined by the shape chosen for the shell 7 (and the plate 7a in particular, which covers the slab 2a) and the lever 3 (the only other component that is left visible).
[0072] It should further be noted that the assembly 5 and the lever 3 are coupled directly or indirectly to the base 2, appreciably reducing the (functional) role of the shell 7 (to which only the key-operated mechanism 6 and the tab 10 pertain). This makes it possible to achieve a twofold objective.
[0073] First of all, the shape and the dimensions of the shell 7 can be chosen freely, solely as a function of the chosen aesthetics of the manufacturer (or of the commissioning company), thus ensuring the maximum of possibilities for the customization of the design of the lock 1 (determined by the design of the shell 7). In fact, changes to the shape and dimensions of the shell 7 have a minimal impact on the functionality of the lock 1, and therefore they can be freely made, on condition obviously that they ensure that the slab 2a is covered with the plate 7a, which is necessary to protect and hide the internal components.
[0074] Even without varying the other components, shells 7 can therefore be adopted which have a plate 7a that is flat or which is more or less rounded, and which has an outline corresponding to that of the underlying slab 2a or a different outline, according to the specific aesthetic requirements.
[0075] Such variations can be made during the initial installation, for example to meet the different requirements of a new customer, or even to replace a previous shell 7, while giving a new appearance to a lock 1 that is already installed and which has been operating for some time.
[0076] Furthermore, since the couplings between the base 2, the assembly 5 and the lever 3 do not involve the shell 7, the lock 1 is found to be reliable, particularly compact, and mechanically strong.
[0077] Finally, it must be noted that, when mounting is complete, almost all of the (functional) components of the lock 1 (except, as has been seen, for the lever 3) are contained between the door (on which the base 2 is applied) and the shell 7, thus ensuring a complete and effective protection of such components, against atmospheric agents and any attempts at forcing. The first fixing means 8 are also effectively protected, because they are located along the lug 2b protected by the tab 10, which renders any attempt at forcing impossible or at least complicated.
[0078] The invention thus conceived is susceptible of numerous modifications and variations, all of which are within the scope of the appended claims. Moreover, all the details may be substituted by other, technically equivalent elements.
[0079] In the exemplary embodiments illustrated, individual characteristics shown in relation to specific examples may in reality be substituted with other, different characteristics, existing in other exemplary embodiments.
[0080] In practice, the materials employed, as well as the dimensions, may be any according to requirements and to the state of the art.
[0081] Where the technical features mentioned in any claim are followed by reference numerals and/or signs, those reference numerals and/or signs have been included for the sole purpose of increasing the intelligibility of the claims and accordingly, such reference numerals and/or signs do not have any limiting effect on the interpretation of each element identified by way of example by such reference numerals and/or signs.
1. A lock for doors of vehicles, of the type of vans, trucks, lorries, semi-trailer trucks,
trailers and the like, which comprises:
- a base (2) that comprises a flat slab (2a) that can be stably applied to a door of the vehicle, the door being usually arranged in a configuration to close an opening provided in a containment structure of the vehicle, of the type of a body and the like,
- a lever (3) for moving a spring latch (4), which can move between at least one protruding position, in which it can engage with a retention element arranged along the containment structure, in order to keep the door in the closed configuration, and at least one position in which it is retracted,
- an assembly (5) for coupling and mutual decoupling of said lever (3) and of said spring latch (4), which can be selectively actuated by way of a respective key-operated contrivance (6),
- an outer shell (7), coupled by interlocking, directly or indirectly, with said base (2), for covering and protecting said base (2) and said assembly (5),
characterized in that said shell (7) comprises a main plate (7a), which has an outline that is adapted to cover said slab (2a) and is folded along the edges, in order to define a perimetric band (7b) placed on said slab (2a), said base (2) comprising an end lug (2b), which is folded with respect to said slab (2a) and is stably anchored, by way of first fixing means (8) such as screws, nails, and the like, to an end lip (7c) of said shell (7), which is folded with respect to said plate (7a) and is arranged at a break in continuity of said band (7b), which is provided in order to allow the transit of said spring latch (4).2. The lock according to claim 1, characterized in that an end tab (10) of said plate (7a) extends co-planar beyond said lip (7c), and the
outline of said slab (2a), in order to protect said lug (2b) and said spring latch
(4), when it is arranged in said protruding position.
3. The lock according to claim 2, characterized in that said shell (7), said band (7b) and said tab (10) are provided in a single piece,
preferably made of steel or sheet metal.
4. The lock according to claim 2 or the 3, characterized in that the inner surface of said tab (10), directed toward said slab (2a) and said spring
latch (4), is lined with at least one layer (10a) of elastically deformable material,
in order to deaden shocks and noise caused by the impact with the retention element,
in the event of violent closing of the door.
5. The lock according to claim 4, characterized in that said layer (10a) is made of rubber.
6. The lock according to one or more of the preceding claims, characterized in that it comprises a pillar (11) for rotatably supporting said lever (3), said pillar (11)
being stably anchored to said slab (2a) and having a seat for the insertion of an
articulation pin (12) of said lever (3).
7. The lock according to claim 6, characterized in that said perimetric band (7b) has a contoured aperture (13) which is provided on the
opposite side from said lip (7c), said slot (13) being shaped complementarily to a
corresponding lateral wall (11a) of said pillar (11), for the coupling by interlocking
of said shell (7) with said pillar (11), and indirectly with said base (2).
8. The lock according to claim 7, characterized in that said pillar (11) comprises two protrusions (11b) that extend transversely from said
lateral wall (11a) and which define two aligned slots (11c), for the insertion of
a padlock (14).
9. The lock according to claim 7 or 8, characterized in that said aperture (13) of said band (7b) extends in said plate (7a) in order to define
an opening, arranged at said pillar (11), for accommodating an end region of said
lever (3).
10. The lock according to one or more of the preceding claims, characterized in that said key-operated contrivance (6) comprises a rotor (15) accommodated so that it
can rotate in a stator (16) supported by said plate (7a), a first end of said rotor
(15), which protrudes from said stator (16) and is directed toward said slab (2a),
rigidly supporting a cam (17) for driving said coupling and decoupling assembly (5),
a second end of said rotor (15), arranged opposite said first end and facing outward
at an orifice (18) provided in said plate (7a), having a cut (19) for the insertion
of a key, in order to command the rotation of said rotor (15) and said cam (17).
11. The lock according to claim 10, characterized in that said coupling and decoupling assembly (5) comprises a slider (20) that can slide
along said slab (2a), in alignment with said spring latch (4), following the commanded
rotation of said lever (3), said slider (20) being rendered integral with said spring
latch (4) by a rod (21), when said rod (21) is fitted in respective openings of said
slider (20) and of said spring latch (4), said rod (21) being able to move transversely
to the direction of sliding of said slider (20) following the rotation of said cam
(17), in order to disengage from said spring latch (4) and achieve the decoupling
of said spring latch (4) from said lever (3), and vice versa.