IL268759B

IL268759B - Reversible-clutch mortise lock

Info

Publication number: IL268759B
Application number: IL268759A
Authority: IL
Original assignee: Salto Systems Sl
Priority date: 2017-03-01
Filing date: 2018-02-12
Publication date: 2022-07-01
Also published as: WO2018158476A1; EP3591149B1; IL268759A; ES2871198T3; RU2739550C1; BR112019017299A2; EP3591149A4; AU2018228797B2; CN110536994A; ES2689376A1; EP3591149A1; DK3591149T3; KR102386486B1; CN110536994B; CL2019002489A1; BR112019017299B1; KR20190123769A; AU2018228797A1; PT3591149T; ES2689376B1

Description

1 268759/ REVERSIBLE-CLUTCH MORTICE LOCK DESCRIPTION Object of the invention The present invention relates to a reversible-clutch mortice lock, which allows the operation of the lock to be changed quickly and simply, such that the handle on the outer side behaves like the one on the inner side and vice versa. The lock object of the invention is applicable in the locksmithing industry, specifically in locks for security areas or doors with access control. Technical problem to be resolved and background of the invention Currently, mortice locks, of the type used to allow only authorised persons to pass, have a clutch mechanism, such that in a disengaged position the handle of the lock moves without actuating the latch (and therefore unable to open the door); meanwhile when it is in an engaged position (because the code, key or other system has been introduced actuating the clutch), the handle is able to be rotated, moving the latch and therefore opening the door. Furthermore, it must be taken into account that the operation of the handle depends on the position thereof with respect to the inside of the room. In other words, the handle on the outer side of the door (meaning the one that would be out in the hallway or street) operates such that said handle is always disengaged (therefore it does not actuate the latch when rotated) and only when the correct key (code, card, etc.) is introduced will it be engaged and when the handle is rotated, the latch will be actuated. Meanwhile, if the handle is on the inner side of the room, the operation thereof is such that when it is rotated it always actuates the latch, in order to enable the exit from the room without having to introduce any keys (for example in hotels). Depending on whether the door opens to the right or to the left, the operation of the handles is inverted. Therefore, in order to install a series of locks in a building, or it is necessary to have two types of locks (some which open to the right and others which open to the left, fulfilling both of the operational natures described in the two previous paragraphs) which generates supply errors and an increase in costs (due to having to provide a certain number of both locks for the building wherein they will be installed) or to have a 35 2 268759/ system which enables the internal operation of the lock to be altered. Several documents are known which disclose locks similar to the lock object of the invention. Among the known documents, it is worth mentioning document US2010/0263418A1 which discloses a mortice lock with a reversible clutch comprising a part which enables a quick and simple manner of making the outer handle behave as an inner handle and vice versa, simply by installing said concentric-shaped part in the parts on the inside of the lock or on the outside, which are in turn joined to the shafts of the handles, respectively. Document US2003/0127864A1 is also known which relates to a mortice lock which can be locked or unlocked thanks to an internal clutch-locking mechanism. The locking mechanism includes a housing, a latch which extends from the housing and it has an extended position and a retracted position. The lock further includes a pushing element for pushing the latch towards the extended position. The locking mechanism includes means for transferring the movement from the latch to the retracted position. The applicant also knows document ES2350218A1, which discloses a clutch device in electric mortice locks with a panic function, meaning one which can always be opened from the inner side, and from the outer side it requires some type of clutch which enables it to be opened. In this document, the clutch device does not offer the possibility of the lock being reversible, which differentiates said lock from the lock object of the invention. Document ES2326482T3 is also known which discloses a lock with controllable handle actuation. The lock of this document tries to provide a solution which offers a wide range of possibilities for installing and using the door lock such that the lock can always be used from one side of the door and the use from the other side is selectively controlled. In this document, the casing of the lock, when installed in the door, should be convertible such that it can be used in the door regardless of the direction in which the door is to be rotated. Additionally, in this lock the changes made in the casing can, by means of the installation arrangement, be performed as simply and easily as possible without opening the lock casing. Finally, the applicant also knows document ES2498892B2 which discloses a tilt clutch lock having a spring with elastic accumulation which enables the change to be made so that the outer handle behaves like the inner handle and vice versa. 35 3 268759/ 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 mortice lock comprising a central follower, a first lateral follower introduced into the central follower on one side of the central follower and a second lateral follower introduced into the central follower on a side opposite the first lateral follower. The central follower 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 follower comprises a peripheral opening, a central quadrangular hole, two through holes and at least one first cylindrical projection around the central quadrangular hole, such that the first lateral follower is introduced by means of the first cylindrical projection into the central hole of the central follower. The second lateral follower comprises a peripheral opening, a central quadrangular hole, two through holes and at least one first cylindrical projection around the central quadrangular hole, such that the second lateral follower is inserted by means of the first cylindrical projection into the central hole of the central follower on a side opposite the first lateral follower. Additionally, the reversible-clutch mortice lock object of the invention comprises a platen located in the central hole of the central follower between the two lateral followers such that the platen limits the central hole of the central follower to two curved holes centred in the central hole of the central follower and, likewise, it divides the central hole into two halves separated by the platen and prevents the shafts of the handles from actuating on the side opposite the one wherein they are installed. The lock object of the invention also comprises a pin which in turn comprises a web and two flanges located in the lateral housings of the central follower. Two points inserted into springs are configured to be located in the lateral housings of the central follower, the points being fastened to the ends of the flanges of the pin. The reversible-clutch mortice lock object of the invention also comprises 35 4 268759/ a cam which in turn comprises a shaft, a protrusion, a hook-shaped end configured to be attached to the web of the pin and another articulated end, the cam being able to rotate around the articulated end. In one embodiment of the invention, the reversible-clutch mortice lock comprises a handling-selector piece configured to choose the side on which the lock can be opened without needing the actuation of the other components thereof. The handling-selector piece comprises two appendages which are configured to be inserted into the through holes of one of the lateral followers and into the curved holes formed by the platen introduced into the central hole of the central follower. The lock object of the invention has the ability to be able to change the handling direction without needing any tools and simply by inserting the handling-selector piece into one of the lateral followers. Furthermore, the components of the lock configure a parallel double-clutch system which is selectively actuated according to the chosen handling direction, or in both, if the handling-selector is not installed, by controlling the access in both directions, and it has a security system against attacks and external manipulations. The lateral followers additionally comprise second cylindrical projections opposite the first cylindrical projections configured to allow the guiding and rotation of the lateral followers with respect to an outer casing. In one embodiment of the invention, the reversible-clutch mortice lock additionally comprises: - a lever which in turn comprises a toothed end, a protuberance and another articulated end, the lever being able to rotate around the articulated end, - a torsion spring inserted into the shaft of the cam, with one end configured to rest on the protrusion of the cam and another end configured to rest on the protuberance of the lever. In the reversible-clutch mortice lock object of the invention, the first lateral follower and the second lateral follower comprise a peripheral projection, such that the peripheral projections make contact with one end of a spring guide which is resting on the opposite end on a fastened support, using compression springs to equip the lateral followers with the recovery necessary to return them to the initial position thereof in case they rotate, this method can be performed 35 268759/ by any system for elastic compression, traction, torsion or platen spring commonly used in locksmithing. In order to securely fasten the points to the pin and so that they cannot become disconnected, the flanges of the pin comprise recesses at the ends and the points comprise projections complementary to the recesses of the flanges of the pin. In turn, the pin is held by the web to the hook-shaped end of the cam, tensioning the entire assembly due to the effect of the torsion spring, such that the unwanted manipulation of the points in order to make the lock object of the invention operate is extremely difficult given the immovable connection of the points, pin and cam. In the reversible-clutch mortice lock object of the invention, the handling-selector piece comprises a fastening stop configured to be introduced into a channel of the central quadrangular hole of one of the lateral followers which prevents the movement thereof and subsequent disconnection from the central follower, once the shafts of the handles have been fastened. This disconnection of the appendages implies a serious failure since one cannot leave the room by operating the inner handle. The platen of the lock object of the invention comprises peripheral tabs located in two peripheral recesses of the central hole of the central follower, such that the position of the platen in the quadrangular central hole cannot be incorrect. In one embodiment of the invention, the reversible-clutch mortice lock comprises an outer housing which offers protection to the internal components of the lock and in turn offers support points so that the articulated ends of some of the components of the lock can rest and rotate. In one embodiment of the invention, the reversible-clutch mortice lock comprises a drive shaft connected at one end to a second worm drive in an output shaft of the reducer motor and comprising a first worm drive at another end, such that the first worm drive is connected to the toothed end of the lever of the lock. The connection described in the previous paragraph, wherein the drive shaft is moved by a motor which is connected to the toothed end of the lever of the lock, makes it so said movement can be transmitted or accumulated through the torsion spring, depending on the position of the lateral followers. 35 6 268759/

Claims

15 268759/

1.CLAIMS 1. A reversible-clutch mortice lock comprising: - a central follower (2) responsible for actuating a latch (3), the central follower (2) comprising a central hole (4) and two lateral housings (5), - a first lateral follower (9), comprising a peripheral opening (11), a central quadrangular hole (13), two through holes (14) and at least one first cylindrical projection (6) around the central quadrangular hole (13), wherein the first cylindrical projection (6) of the first lateral follower (9) is introduced into the central hole (4) of the central follower (2), - a second lateral follower (10), comprising a peripheral opening (11), central quadrangular hole (13), two through holes (14) and at least one first cylindrical projection (6) around the central quadrangular hole (13), wherein the first cylindrical projection (6) of the second lateral follower (10) is inserted into the central hole (4) of the central follower (2) on a side opposite the first lateral follower (9), characterised in that it additionally comprises: - a platen (7) located in the central hole (4) of the central follower (2) between the two lateral followers (9, 10), such that the platen (7) divides the central hole (4) of the central follower (2) into two halves separated by the platen (7), and such that the platen (7) limits the central hole (4) to two curved holes (8), - a pin (21) comprising a web (23) and two flanges (22) located in the lateral housings (5) of the central follower (2), - two points (24) inserted into springs (25), the points (24) being fastened at the ends of the flanges (22) of the pin (21), and configured to be located in the lateral housings (5) of the central follower (2), and - a cam (27) comprising a shaft (30), a protrusion (31), a hook-shaped end (29) configured to be attached to the web (23) of the pin (21) and another articulated end (28), the cam (27) being able to rotate around the articulated end (28); wherein, by rotating the cam (27) around the articulated end (28), the end (29) of the cam (27) attached to the web (23) of the pin (21) is configured to push said pin (21) towards the inside of the central follower (2), such that the flanges (22) of the pin (21) are configured to push the points (24). 35 16 268759/

2. The reversible-clutch mortice lock according to claim 1 characterised in that it additionally comprises a handling-selector piece (16), comprising two appendages (17) configured to be inserted into the through holes (14) of one of the lateral followers (9, 10) and into the curved holes (8) formed by the platen (7) in the central hole (4) of the central follower (2).

3. The reversible mortice lock according to any of claim 2, characterised in that the handling-selector piece (16) comprises a fastening stop (18) configured to be introduced into a channel (20) of the central quadrangular hole (13) of one of the lateral followers (9, 10).

4. The reversible-clutch mortice lock according to any of the preceding claims characterised in that the lateral followers (9, 10) additionally comprise second cylindrical projections (15) opposite the first cylindrical projections (6) configured to allow the guiding and rotation of the lateral followers (9, 10) with respect to an outer casing (1).

5. The reversible-clutch mortice lock according to any of the preceding claims characterised in that it additionally comprises: - a lever (34) which in turn comprises a toothed 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 into the shaft (30) of the cam (27), with one end configured to rest on the protrusion (31) of the cam (27) and another end configured to rest on the protuberance (33) of the lever (34); wherein the rotation movement of the lever (34) causes the protuberance (33) of the lever (34) to make contact with the torsion spring (32) at one end; and wherein said contact causes the rotation of the torsion spring (32) on the shaft (30) until the end of the torsion spring (32), opposite the one in contact with the protuberance (33) of the lever (34), comes into contact with the protrusion (31) of the cam (27) and pulls said cam (27), by means of the protrusion (31) thereof, and forces it to rotate around the articulated end (28) of the cam (27). 35 17 268759/

6. The reversible-clutch mortice lock according to claim 5 characterised in that it comprises a drive shaft (43) configured to be moved by a motor (38) wherein said drive shaft (43) 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 lateral followers (9, 10).

7. The reversible mortice lock according to claim 6 characterised in that it the drive shaft (43) is connected at one end to a second worm drive (44) in an output shaft (42) of the motor (38) and comprising a first worm drive (37) at another end, such that the first worm drive (37) is connected to the toothed end (35) of the lever (34) of the lock.

8. The reversible mortice lock according to any of the preceding claims characterised in that the first lateral follower (9) and the second lateral follower (10) comprise a peripheral projection (12), configured to make contact with a spring guide (39), which in turn, rests on compression springs (40) which rest on a fixed support piece (41).

9. The reversible mortice lock according to any of the preceding claims characterised in that the flanges (22) of the pin (21) comprise a recess (45) at the end and the points (24) comprise a projection (26), complementary to the recess (45) of the flanges (22) of the pin (21), in order to fasten the points (24) to the pin (21).

10. The reversible mortice lock according to any of the preceding claims characterised in that the platen (7) comprises peripheral tabs (46) located in two peripheral recesses (47) of the central hole (4) of the central follower (2).