ES2689376A1 - REVERSIBLE CLUTCH EMBEDDING LOCK (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Reversible clutch mortise lock, which offers safety features focused on avoiding unauthorized lock manipulations and allows changing the lock's operation in a quick and easy way, by changing a single piece. The lock comprises a central recess (2), two lateral recesses (9, 10) and a plurality of elements that make the lateral recesses (9, 10) act on the central recess (2), this is a clutch system , actuated by a motor (38) through a lever (34), a cam (27) and a fork (21), which causes a pair of pins (24) to connect on the lateral nuts (9, 10) located in the own central nut (2). To change the functioning of the lock, a hand selector piece (16) is connected to one or the other of the side nuts (9, 10). (Machine-translation by Google Translate, not legally binding)

Description

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REVERSIBLE CLUTCH CLUTCH LOCK

Object of the invention

The present invention relates to a reversible clutch inlay lock, which allows the operation of the lock to be changed quickly and easily, so that the handle on the outer side behaves like that on the inner side and vice versa.

The lock object of the invention is applicable in the locksmith industry, specifically in the locks of security areas or doors with access control.

Technical problem to solve and background of the invention

Currently the mortise locks, of the type used to allow only authorized persons to pass, have a clutch mechanism, in such a way that in a disengaged position the handle of the lock moves without activating the latch (and therefore unable to open the door); while when it is in a clutch position (because the code, key or other system has been introduced by operating the clutch) it is achieved by turning the handle to move the latch and consequently open the door.

In addition, it must be taken into account that the operation of the handle depends on the position of the handle with respect to the interior of the room.

That is, the handle that is on the outer side of the door (that is, the one that would give the corridor or the street) its function is such that said handle is always disengaged (therefore it does not actuate the latch when the same) and only at the moment when the correct key (code, card, etc.) is inserted it will be clutch and when the handle is turned the latch will be activated.

While the handle is on the inner side of the room, its function is such that when it is turned it always activates the latch, to allow the room to exit without having to enter any keys (for example in hotels).

Depending on whether the door opens to the right or left, the operation of the handles is reversed, therefore, in order to install a series of locks in a building, or it is necessary to have two types of locks (ones that open right and others

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that open to the left fulfilling both the functionalities described in the two previous paragraphs) which generates supply errors and increase in costs (due to having to provide a certain number of both locks to the building where they will be installed) or have a system that allows to alter the internal functioning of the lock.

Several documents are known that disclose locks similar to the lock object of the invention. Among the known documents, it is worth mentioning document US2010 / 0263418A1 which discloses a mortise lock with a reversible clutch comprising a piece that allows a quick and simple way to make the outer handle behave as an inner handle and vice versa, simply by installing said piece of concentric shape, in the parts inside the lock or outside, which in turn are attached to the axes of the handles respectively.

It is also known document US2003 / 0127864A1 which refers to a mortise lock that can be locked or unlocked thanks to an internal clutch locking mechanism. The locking mechanism includes a housing, a latch that extends from the housing and has an extended position and a retracted position. The lock also includes a pushing element to push the latch towards the extended position. The locking mechanism includes means to transfer the movement of the latch to the retracted position.

The applicant also knows the document ES2350218A1, which discloses a clutch device in electric mortise locks with panic function, that is to say the one that can always be opened from the inner side, and from the outside requires some type of clutch that allows its opening. In this document the clutch device does not offer the possibility that the lock is reversible, which differentiates said lock from the lock object of the invention.

It is also known document ES2326482T3 which discloses a lock with controllable actuation of the latch. The lock of this document tries to provide a solution that offers a wide range of possibilities to install and use the door lock so that the lock can always be used from one side of the door and the use from the other is selectively controlled. In this document, the lock box, when installed on the door, must be convertible so that it can be used on the door regardless of the direction in which the door is to be turned.

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Also in this lock the changes in the box can be made by means of the installation device, in a simple and easy way without opening the lock box.

Finally, the applicant also knows document ES2498892B2 that discloses a spring-loaded clutch lock with elastic accumulation that allows the change to be made so that the outer handle behaves like the inner handle and vice versa.

None of the documents known to the applicant offers security guarantees against unwanted manipulation of the lock such as those offered by the lock disclosed in this document.

Description of the invention

The invention described discloses a reversible clutch inlay lock comprising a central nut, a first lateral nut introduced into the central nut by one side of the central nut and a second lateral nut introduced into the central nut by a side opposite to The first lateral nut.

The central nut is configured to operate a latch of the lock object of the invention and comprises a central hole and two lateral housings.

The first lateral nut comprises a peripheral recess, a central quadrangular hole, two through holes and at least a first cylindrical projection around the central quadrangular hole, such that the first lateral nut is inserted through the first cylindrical projection into the central hole of the nut central.

The second lateral nut comprises a peripheral recess, a central quadrangular hole, two through holes and at least a first cylindrical projection around the central quadrangular hole, such that the second lateral nut is inserted through the first cylindrical projection into the central hole of the nut central on one side opposite the first lateral nut.

Additionally, the reversible clutch inlay lock object of the invention comprises a plate located in the central hole of the central nut between the two lateral nuts such that the plate limits the central hole of the central nut to two curved holes

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centered in the central hole of the central nut and also, divides the central hole into two halves separated by the plate and prevents the axes of the handles from acting on the side opposite to the one installed.

The lock object of the invention also comprises a fork which in turn comprises a soul and two wings located in the lateral housings of the central nut.

In the lateral housings of the central nut, two pythons inserted in springs are located, the pythons being fixed to the ends of the fork wings.

The reversible clutch inlay lock object of the invention also comprises a cam which in turn comprises a shaft, a projection, a hook-shaped end attached to the fork core and another articulated end, the cam being able to rotate around of the articulated end.

The reversible clutch inlay lock object of the invention comprises a hand-held selector piece configured to choose the side on which the lock can be opened without the need for the other components thereof to act. The hand-held selector piece comprises two appendages that are inserted in the through holes of one of the lateral nuts and in the curved holes formed by the plate inserted in the central hole of the central nut.

The lock object of the invention has the ability to be able to change the hand without the need for any tools and simply by inserting the hand-held selector piece into one of the side nuts.

In addition, the components of the lock configure a parallel double clutch system that is selectively operated according to the chosen hand, or in both, if the hand selector is not installed, controlling access in both directions, and presents a safety system against attacks and external manipulations.

The lateral nuts additionally comprise a second cylindrical projections opposed to the first cylindrical projections configured to enable the guidance of the lateral nuts in relation to an outer housing.

The reversible clutch inlay lock object of the invention additionally

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understands:

- a lever which in turn comprises a serrated end, a protuberance and another articulated end, the lever being able to rotate around the articulated end,

- a torsion spring inserted in the cam shaft, with one end configured to rest on the shoulder of the cam and another end configured to rest on the protuberance of the lever.

In the reversible clutch mortise lock object of the invention the first side nut and the second side nut comprise a peripheral projection, such that the peripheral projections contact an end of a spring guide that is supported at the opposite end on a support fixed, using compression springs to provide the lateral nuts with the necessary recovery to return them to their initial position in case of turning, this method can be performed by any elastic compression, traction, torsion or plate spring system commonly used in locksmith

To secure the pins to the fork in a safe way and that it is not possible to disconnect them, the wings of the fork comprise recesses at the ends and the pythons comprise complementary projections of the recesses of the wings of the fork. In turn, the fork is held by the soul to the hook-shaped end of the cam, tensioning the entire assembly by the effect of the torsion spring, so that the unwanted manipulation of the pythons to operate the lock object of the invention is extremely difficult given the immovable connection of pythons, fork and cam.

In the reversible clutch mortise lock object of the invention, the hand-held selector part comprises a fixing stop configured to be introduced into a channel of the central quadrangular orifice of one of the lateral nuts that prevents its displacement and subsequent disconnection of the central nut. Once the axes of the handles have been fixed, this disconnection of the appendages implies a serious failure to not be able to leave the room by operating the interior handle.

The plate of the lock object of the invention comprises peripheral tabs located in two peripheral recesses of the central hole of the central nut, so that the position of the plate in the quadrangular central hole cannot be wrong.

The reversible clutch inlay lock comprises an outer housing that offers

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protection to the internal components of the lock and in turn offers support points so that the articulated ends of some components of the lock can rest and turn.

The reversible clutch inlay lock object of the invention comprises a transmission shaft connected at one end to a second auger in an output shaft of the geared motor and comprising a first auger at another end, such that the first auger is connected to the end toothed lock lever

The connection described in the previous paragraph where the transmission shaft is moved by a motor that is connected to the toothed end of the lock lever, means that said movement can be transmitted or accumulated through the torsion spring, depending on the position of the side nuts.

Description of the figures

In order to complete the description and in order to help a better understanding of the characteristics of the invention, this descriptive report is attached, as an integral part thereof, a set of drawings in which with an illustrative and non-limiting nature, the next:

Figure 1 shows a perspective view of the central nut of the lock object of the invention.

Figure 2 shows a perspective view of the side nuts of the lock object of the invention.

Figure 3 shows a perspective view of the cam of the lock object of the invention

Figure 4 shows a perspective view of the lock lever object of the invention.

Figure 5 shows a perspective view of the fork of the lock object of the invention.

Figure 6 shows a perspective view of the hand selector piece of the lock object of the invention.

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Figure 7 shows a perspective view of the plate of the lock object of the invention.

Figure 8 shows a perspective view of the lock python object of the invention.

Figure 9 shows a perspective view of the central nut of Figure 1 with the plate of Figure 7 inserted in the central hole, defining the curved holes.

Figure 10 shows a perspective view with the nuts, the plate, the handpiece and the axes of the handles of the lock object of the invention in an opening position from one side.

Figure 11 shows a perspective view with the nuts, the plate, the handpiece and the axes of the handles of the lock object of the invention in an opening position from the side opposite to that of Figure 10.

Figure 12 shows a side view of the lock object of the invention having removed the cover of the outer casing to see the components inside it, in a clutch position in which the side nut rotates the central nut.

Figure 13 shows a side view of the lock object of the invention having removed the cover of the outer shell to see the components inside it, in a position where the rotation of the side nut does not rotate the nut central because the pythons are not embedded in the peripheral recesses of the side nuts.

Figure 14 shows a side view of the lock object of the invention in the position in which the axis of the outer handle has been turned and therefore the side nut, before activating the motor, so that the pythons cannot fit into the peripheral recesses of the side nuts.

Figure 15 shows a side view of the lock object of the invention in the position in which the lock is opened from the inside through the hand-held selector piece without the need to activate the motor.

Figure 16 shows a side view of the lock object of the invention in the position of

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opening with the pythons having fitted into the peripheral recesses and the central nut displaces the latch, that is to say opening having acted the components of the lock from the activation of the motor.

The different numerical references that are reflected in the figures correspond to the following elements:

1. - outer shell,

2. - central nut,

3. - latch,

4. - central hole,

5. - side housings,

6. - first cylindrical projection,

7. - plate,

8. - curved holes,

9. - first side nut,

10. - second lateral nut,

11. - peripheral incoming,

12. - peripheral projection,

13. - central quadrangular hole,

14. - through holes,

15. - second cylindrical projection,

16. - hand-held selector piece,

17. - appendices,

18. - fixing stop,

19. - handle shaft,

20. - central quadrangular orifice channel,

21. - fork,

22. - fork wings,

23. - soul of the fork,

24. - python,

25. - springs,

26. - outgoing,

27. - cam,

28. - articulated end of the cam,

29. - hook-shaped end,

30. - axis,

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31. - highlight,

32. - torsion spring,

33. - bump,

34. - lever,

35. - serrated end,

36. - articulated end of the lever,

37. - first auger,

38. - engine

39. - spring guide

40. - side springs,

41. - support piece,

42. - output shaft,

43. - drive shaft,

44. - second auger,

45. - lowering of the fork wing.

46. - peripheral tabs,

47. - peripheral recesses, and

48. - lateral housing flange.

Preferred Embodiment of the Invention

As already indicated, and as can be seen in the figures, the object of the invention is a reversible clutch inlay lock, which offers safety features focused on preventing unauthorized manipulations of the lock so that it can be avoid that the elements that form it can cause it to clutch for example by applying a vibration to the lock.

In addition, the lock object of the invention allows the operation of the lock to be changed quickly and easily, so that the operation of the handle on the inner side and the outer side can be exchanged and the same lock can be used for doors that open to one side (right) and doors that open to the opposite side (left).

The lock object of the invention comprises a plurality of components that will be described below separately, also showing the interaction of one another with the correct functioning of the lock. Furthermore, the lock object of the invention comprises an outer housing (1) that houses the components of the lock and

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it offers a surface to which some components of the lock are fixed at least partially.

The lock object of the invention comprises a central nut (2) which is responsible for operating the latch (3) of the lock; The central nut (2) is symmetrical with respect to a plane passing through its center, and comprises a central hole (4) parallel to the plane of symmetry, and two lateral housings (5) on the sides of the plane of symmetry.

In the central hole (4) of the central nut (2), the lock object of the invention has a plate (7) that configures inside the central hole (4) two curved holes (8) and also divides the central hole in two halves on the sides of the plate itself (7).

Furthermore, the lock object of the invention comprises a first lateral nut (9) and a second lateral nut (10) placed in the central hole (4) of the central nut (2) on the sides of the plate (7).

Each lateral nut (9, 10) comprises:

- a peripheral inlet (11),

- a peripheral projection (12),

- a central quadrangular hole (13) where the axes of the handles (19) of the door where the lock is placed are introduced,

- two through holes (14),

- First cylindrical projections (6) around the central quadrangular hole (13) on the face of contact with the plate (7), which facilitate the positioning and rotation of the central nut (2) on the side nuts (9, 10 ), Y

- a few second cylindrical projections (15) opposed to the first cylindrical projections (6), which make it possible to guide and rotate the lateral nuts (9, 10) with respect to the outer casing (1) existing on both sides.

The plate (7) has a thickness less than the thickness of the central hole (4) of the central nut (2), whereby it generates spaces on both sides of said plate (7), such that, as already stated, in these spaces the first cylindrical projections (6) of the lateral nuts (9, 10) are introduced which ensures the rotation of the lateral nuts (9, 10) on the central nut (2).

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The plate (7) comprises peripheral tabs (46) located in two peripheral recesses (47) of the central hole (4) of the central nut (2), thereby ensuring its position within the central hole (4) of the central nut (2).

The lock object of the invention can incorporate a hand-held selector piece (16), which as it is inserted in a side nut (9) or in another side nut (10), makes the side of the lock where the said piece is introduced hand selector (16) is the side of the lock object of the invention that will work as a handle that always activates the latch (3) of the lock, without having to enter a code, key, ... that activate a motor (38) by clutching the system, for example to leave a hotel room.

To fix the hand selector piece (16) on one of the side nuts (9, 10), the hand selector piece (16) comprises two appendages (17) that are inserted into the through holes (14) of one of the lateral nuts (9, 10) and which are also introduced in the curved holes (8) formed by the plate (7) in the central hole (4) of the central nut (2), thus the rotation of an axis of handle (19) moves the central nut (2) thanks to the thrust of the appendages (17) on the central nut (2) and with it the latch (3) of the lock object of the invention. In addition, the hand-held selector piece (16) comprises a fixing stop (18) located in a channel (20) of the central quadrangular hole (13) of one of the lateral nuts (9, 10).

The functionality of the fixing stop (18) is to ensure that the appendages (17) remain inserted inside the curved holes (8). So that when turning the axis of the handle (19) turn the central nut (2) by dragging the appendages (17).

This functionality is achieved because the axis of the handle (19) attached to said fixing stop (18), thus guaranteeing the position of the appendages (17).

Thus, depending on where the hand selector piece (16) is installed, the operation of the lock will be on one side (right) or on the other (left).

In the lock object of the invention it is also possible to dispense with said hand selector piece (16), so that neither side of the lock is able to move the latch (3) of the lock without first activating the motor (38) and thus the two sides of the lock provide a restricted opening of the lock.

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The lock object of the invention also comprises a fork (21) guided in the central nut (2), by means of two wings (22) of the fork (21) inserted in the lateral housings (5) of the central nut (2). In addition to the two wings (22) the fork (21) comprises a soul (23) that joins the wings (22).

The lock object of the invention comprises two pythons (24), a python (24) inside each lateral housing (5) of the central nut (2), which are located next to the wings (22) of the fork (twenty-one). The pythons (24) are inserted in springs (25), which are located inside each lateral housing (5) supported on a flange (48) of said lateral housings (5), so that the springs (25 ) butt against said flanges (48) of the housings (5).

The ends of the wings (22) of the fork (21) have complementary recesses (45) with protrusions (26) of the ends of the pythons (24) so that the pythons (24) are fixed to the wings (22) of the fork (21).

The lock object of the invention also comprises a cam (27) with an articulated end (28) and the other hook-shaped end (29), such that the hook-shaped end (29) is attached to the fork (21 ), specifically to the fork (23) of the fork (21), with this configuration the cam (27) can rotate around the articulated end (28) and move the fork (21) with its rotation movement.

The cam (27) comprises an axis (30) and a shoulder (31), such that a torsion spring (32) having two ends is inserted into the shaft (30), one end configured to contact the shoulder (31) ) of the cam (27) and another end configured to contact a protuberance (33) of a lever (34) described below.

Fixing the pythons (24) to the fork (21), with the recesses (45) of the wings (22) of the fork (21) on the projections (26) of the pythons (24), together with the fixing from the hook-shaped end (29) of the cam (27) to the core (23) of the fork (21), it makes the whole assembly stressed by the effect of the torsion spring (32), so that the manipulation unwanted of the pythons (24) to operate the lock object of the invention is extremely difficult, given the already exposed immovable connection of pythons (24), fork (21) and cam (27).

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The lever (34) of the lock object of the invention comprises a serrated end (35) and another articulated end (36), so that the lever (34) has the ability to rotate around the articulated end (36).

The toothed end (35) of the lever (34) meshes with a first auger (37) which in turn is connected to a motor (38), such that the motor (38) is activated based on an electronics that handles the access permissions of the lock object of the invention.

The lock object of the invention, as mentioned, allows to choose the side of the lock that acts as a handle that always opens the lock and the side of the door that requires a permit to operate the components that allow the opening of the door.

The operation of the lock object of the invention, on the side that a permission is required for the operation of the components that allow the door to be opened is as follows:

- Once the key, code, ... is entered, the motor is activated (38)

- the motor (38) by means of the first auger (37) acts on the toothed end (35) of the lever (34), so that the lever (34) rotates around its articulated end

(36),

- the rotation movement of the lever (34) causes the protuberance (33) of the lever (34) to contact the torsion spring (32) at one end,

- the torsion spring (32) rotates on the shaft (30) until the end of the torsion spring (32), opposite to the contact with the protuberance (33) of the lever (34), comes into contact with the shoulder (31) of the cam (27) and drag to said cam (27) by means of the projection (31) thereof and forces it to rotate around the articulated end (28) of the cam (27),

- in the rotation of the cam (27), the end (29) of the cam (27) attached to the fork (21) pushes said fork (21) into the central nut (2), so that the wings (22) of the fork (21) push the pythons (24) that leave the inside of the springs (25) until each python (24) is introduced inside the peripheral recess (11) of the nuts lateral (9, 10).

With the components of the lock in the position described above (clutch position), the rotation of the handle shaft (19) moves the side nut (9) by dragging the center nut (2) thanks to the push of the python (24) and displaces the latch (3) of the lock.

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In order for the side nuts (9, 10) to return to their initial position, the lock object of the invention comprises a spring guide (39) which is supported by lateral springs (40) which in turn rest on a piece of support (41) fixed to the outer casing (1) of the lock, so that the spring guide (39) moves pushed by the peripheral projections (12) of the side nuts (9, 10) (when they turn to the turn the shaft of the handle (19) that activates them), and the side springs (40) return to the initial position the spring guide (39) and the mentioned side nuts (9, 10), when you stop exercising force on the side nuts (9, 10) when releasing the handle shaft (19).

In addition to the lock object of the invention, if there has been no movement of the pythons (24) (because access was not allowed) and the pythons (24) remain outside the peripheral recesses (11) of the nuts lateral (9, 10), the axis of the outer handle (19) can rotate one of the lateral nuts (9, 10) but said lateral nut (9, 10) does not rotate the central nut (2), by so much the displacement of the latch (3) of the lock does not take place.

Likewise, the lock object of the invention has a configuration that allows it to continue functioning correctly in abnormal operating situations, for example when the handle is turned before the motor (38) acts and moves the rest of the components of the lock. In that position, the lateral nut (9, 10) has the peripheral recess (11) misaligned with the pythons (24) and therefore the pythons (24) cannot access the peripheral recess (11) and enable the nut to rotate central (2) and consequently the displacement of the latch (3).

What happens in this situation is that the motor (38) acts on the lever (34), the lever (34) acts on the torsion spring (32) that rotates on itself and when it comes into contact with the projection (31 ) of the cam (27) the spring (32) cannot move the cam (27) since it is locked, since the pythons (24) abut the periphery of the side nuts (9, 10) and the fork It can't move. In this situation, the torsion spring is pulled as one end of it is blocked by the shoulder (31) of the cam (27) and the other end is pushed by the protuberance (33) of the lever (34) accumulating engine power (38). At the moment when the lateral nuts (9, 10) align the peripheral recesses (11) with the lateral housings (5), the cam (27) is unlocked, since there is no stop that prevented the movement of the pythons ( 24) and of the fork (21), and the spring (32) is released from the load to which it was subjected,

moving the cam (27) which in turn displaces the fork (21) and this one to the pythons (24) the same thing happens in the opposite direction when the closing occurs and the pythons are retained by the peripheral recesses (11) of the side nuts (9) or (10).

5 The motor (38) is connected by an output shaft (42) with a second auger (44) to a drive shaft (43), such that the drive shaft (43) comprising the first auger (37) in its other end is connected to the serrated end (35) of the lever (34) of the lock by means of said first auger (37).

The lock object of the invention offers security features against the attempt of external manipulations that are given by the configuration of the components of the lock itself and how they are connected to each other. For example, the connection between the pythons (24) and the wings (22) of the fork (21) by means of the recesses (45) of the wings (22) complementary to the projections (26) of the ends of the pythons (24 ) prevents it from

15 lose the connection between the pythons (24) and the fork (21). It also provides security in the connection between the cam (27) and the fork (21) the hook-shaped end (29) of the cam (27) that hooks the core (23) of the fork (21) thus avoiding the movement of the fork (21) if the cam (27) is not activated.

The invention should not be limited to the embodiments described herein. Experts in the field can develop other embodiments in view of the description made here. Accordingly, the scope of the invention is defined by the following claims.

Claims (10)

5 10 fifteen twenty 25 30 35 1.-Reversible clutch inlay lock comprising: - a central nut (2) responsible for operating a latch (3), the central nut (2) comprises a central hole (4) and two lateral housings (5), - a first lateral nut (9), comprising a peripheral recess (11), a central quadrangular hole (13), two through holes (14) and at least a first cylindrical projection (6) around the central quadrangular hole (13) , the first lateral nut (9) being inserted through the first cylindrical projection (6) in the central hole (4) of the central nut (2), - a second lateral nut (10), comprising a peripheral recess (11), a central quadrangular hole (13), two through holes (14) and at least a first cylindrical projection (6) around the central quadrangular hole (13) the second lateral nut (10) being inserted through the first cylindrical projection (6) into the central hole (4) of the central nut (2) on a side opposite the first lateral nut (9), characterized in that it additionally comprises: - a plate (7) located in the central hole (4) of the central nut (2) between the two lateral nuts (9, 10), such that the plate (7) divides the central hole (4) of the central nut (2) in two halves separated by the plate (7), and such that the plate (7) limits the central hole (4) to two curved holes (8), - a fork (21) comprising a core (23) and two wings (22) located in the lateral housings (5) of the central nut (2), - two pythons (24) inserted in springs (25), the pythons (24) being fixed to the ends of the wings (22) of the fork (21), and located in the lateral housings (5) of the central nut (2 and - a cam (27) comprising an axis (30), a projection (31), a hook-shaped end (29) attached to the soul (23) of the fork (21) and another articulated end (28), being the cam (27) capable of rotating around the articulated end (28). 2. Reversible clutch inlay lock according to claim 1 characterized in that it additionally comprises a hand-held selector piece (16), comprising two appendages (17) inserted in the through holes (14) of one of the side nuts (9) , 10) and in the curved holes (8) formed by the plate (7) in the central hole (4) of the central nut (2). 5 10 fifteen twenty 25 30 35 3. - Reversible clutch inlay lock according to any of the preceding claims characterized in that the side nuts (9, 10) additionally comprise a second cylindrical projections (15) opposite to the first cylindrical projections (6) configured to enable guiding and rotation of the side nuts (9, 10) with respect to an outer casing (1). 4. - Reversible clutch inlay lock according to the preceding claims characterized in that it additionally comprises: - a lever (34) comprising a serrated end (35), a protuberance (33) and another articulated end (36), the lever (34) being able to rotate around the articulated end (36), - a torsion spring (32) inserted in the shaft (30) of the cam (27), with one end configured to rest on the shoulder (31) of the cam (27) and another end configured to rest on the protuberance ( 33) of the lever (34). 5. - Reversible clutch inlay lock according to claim 4 characterized in that it comprises a drive shaft (43) driven by a motor (38) that is connected to the toothed end (35) of the lever (34) of the lock, transmitting or accumulating said movement through the torsion spring (32) depending on the position of the side nuts (9,10). 6. - Reversible mortise lock according to any of the preceding claims characterized in that the first lateral nut (9) and the second lateral nut (10) comprise a peripheral projection (12), configured to contact a spring guide (39) , which in turn relies on compression springs (40) that rest on a fixed support piece (41). 7. - Reversible mortise lock according to any of the preceding claims characterized in that the wings (22) of the fork (21) comprise a recess (45) at the end and the pythons (24) comprise a projection (26), complementary of the recess (45) of the wings (22) of the fork (21), to fix the pythons (24) to the fork (21). 8. - Reversible mortise lock according to any of claims 2 to 6 characterized in that the hand-held selector piece (16) comprises a fixing stop (18) configured to be introduced into a channel (20) of the central quadrangular hole (13) of one of the lateral nuts (9, 10). 9. - Reversible mortise lock according to any of the preceding claims characterized in that the plate (7) comprises peripheral tabs (46) located in two peripheral recesses (47) of the central hole (4) of the central nut (2). 5 10. - Reversible mortise lock according to any of the preceding claims characterized in that it comprises a transmission shaft (43) connected at one end to a second auger (44) on an output shaft (42) of the motor (38) and that it comprises a first auger (37) at another end, such that the first auger (37) is connected to the jagged end (35) 10 of the lever (34) of the lock.