WO2010130850A1

WO2010130850A1 - Clutch device for electric mortise locks with anti-panic function

Info

Publication number: WO2010130850A1
Application number: PCT/ES2010/000206
Authority: WO
Inventors: Fermín MENTA SAN MIGUEL
Original assignee: Talleres De Escoriaza, S.A.; Errazkin Mugica, Iker
Priority date: 2009-05-13
Filing date: 2010-05-12
Publication date: 2010-11-18
Also published as: EP2431557A1; WO2010130850A8; EP2431557B1; DK2431557T3; ES2350218B1; ES2350218A1; EP2431557A4

Abstract

The invention relates to a clutch device for use in electric mortise locks having an anti-panic function, consisting of: a radial centre rest (5), a radial pin (6), a torsion spring (7), a follower (8) actuating the lock bolt, a supplementary outer follower part (9), an outer washer (10), a supplementary square bar (11) for the outer shaft (2), and a right-angled-U-shaped band-like fork (12). According to the invention, the radial centre rest (5) has a curved/concave front (5b) of identical radius to the central axial hole (8b) in the follower (8) and a thickness that matches the width of a radial notch (8c) in the follower (8), in which the radial centre rest (5) is housed and positioned between the tang of the radial pin (6) and a second end (7c) of a torsion spring (7). The torsion spring is mounted on a torsion shaft (7a) and has a first end (7b) connected to the spindle (4a) of the electric motor (4) and a second end (7c) which extends through a filled lug (5a) of the radial centre rest (5).

Description

CLUTCH DEVICE IN ELECTRIC CLUTCH LOCKS WITH ANTIPANIC FUNCTION FIELD OF THE INVENTION

This invention concerns a clutch device that is specially designed for application in electric mortise locks equipped with a panic function, that is, those that can always be opened from the inside, even when it is not possible to do it from the outside.

In its general and common constitution, this type of lock comprises, at least, an internal square shaft in which an internal handle or handle is installed, an external square shaft equipped with an external handle and an electric motor provided with a output spindle for actuation of the clutch device itself, here and hereafter being the interior and exterior designations taken, respectively, in relation to the interior and exterior sides of the lock.

STATE OF THE PREVIOUS TECHNIQUE The design of this type of locks is faced with the problem of having to combine the need to offer a large number of benefits (being electric, panic and stuffing) that involves the use of a considerable number of elements that They have to be organized in a very small space.

This field, therefore, is about achieving solutions that use a small number of components, that have simple configurations and a simple functional interrelation that leads to reliable operation and long product life without breakdowns; these objectives that the various executions known today reach in some or several of them with greater or lesser success. EXPLANATION OF THE INVENTION AND ADVANTAGES

The present invention proposes a differentiated solution that largely combines the objectives of using a small number of components that offer simple designs and simple and reliable operation. For these purposes, the recommended clutch device consists of a radial window, a radial key, a torsion spring, a nut that activates the latch of the lock, an outer nut supplement, an outer washer, a supplementary square of the outer shaft and a "U" shaped fork with straight angles and that between its branches it has a separation adjusted by default to the thickness of the supplementary square; where: the radial window has a curved-concave front of the same radius as the central axial hole of the nut, has a complementary thickness of the width of a radial notch of the nut in which this radial window is located and interposed between The tail of the radial key and a second end of a torsion spring that is mounted on a torsion axis and that has a first end attached to the spindle of the electric motor, whose second end loosely passes through an orifice ear of the radial window ; The nut has a radial opening that is communicated with its radial notch and with its central axial hole which in its half inner body has permanent union with the inner square of the square by means of an inner nut supplement and an inner washer; The radial key has an arc-circular front of the same radius as the central axial hole of the nut and, on its back, it is supported on the curved-concave front of the radial window that is linked to the second end of the torsion spring, while this radial key has a complementary section of said radial opening in which it is located; the outer square shaft is permanently coupled with the outer nut supplement and, by means of the outer washer, with a socket formed at the inner end of the supplementary square. According to this constitution, the radial key is capable of operating between a delayed position against the torsion spring, in which the arc-circular front is flush with the central axial hole of the nut, and an advanced position in which its front arc-circular invades the central axial hole of the nut at the same time as in a radial box of said outer nut supplement that is coupled in the middle outer body of the nut, whose radial box is communicated with the radial opening of the nut . For its part, the supplementary square is in its entire width opened by a longitudinal groove that is a little smaller than the diameter of a threaded prisoner facing it and that is through the outer handle; The fork has both branches attached to the faces of the supplementary square which are affected by the longitudinal groove and, in these branches, there are two tabs that are formed at the end towards the inside of the fork and that are of complementary width to that which it has The longitudinal groove of the supplementary square, as well as these branches are perforated longitudinally by means of openings that run along the sides of said longitudinal groove being conveniently narrower than the same and, at its outer end, these branches form opposite protrusions that They are directed towards the fork and are complementary to extensions that are practiced in this longitudinal groove.

This constitution allows a construction of very small size that fits perfectly to the limited space available in the mortise locks.

The clutch function is produced in the following way: when the electric motor is excited, its spindle moves the first end of the torsion spring which, with its second end, drives the sliding radial window that plays on the radial notch of the nut and that, in turn, it displaces the radial sliding key so that it penetrates at the same time in the central axial hole of the nut and in the radial box of the outer nut supplement; as, through the outer square axis, and the supplementary square of this outer axis, the outer handle is rotatably coupled with the outer nut supplement, and the latter is rotatably coupled with the nut, it turns out that, by operating the handle , The lock opens from the outside. As will be seen in detail below, within this process the torsion spring exerts a function of securing the clutch and disengaged, since when the spindle rotates and the position of the parts does not yet allow the displacement of the radial key, by means of the torsion axis the first end of the torsion spring is displaced so that it transmits an effort to the second end thereof, and this is elastically loaded to drive the displacement of the radial key as long as it adopts The position so allowed.

Another functionality involved in the proposed constitution refers to the means provided for the coupling of the outer handle (of course, equally valid for an inner handle). These means are constituted by the conjunction of the supplementary square of the outer shaft and of the "U" profiled hairpin; its functionality consists in that the fork is coupled on the supplementary square so that the openings of the latter are superimposed with the sides of the longitudinal groove of the supplementary square; then, this assembly is inserted in the handle to the desired position that will be fixed by the threaded prisoner. The fixation is very firm because the smaller width of said openings with respect to the grooves causes the threaded prisoner to deform the edges of the openings of the fork producing a wedging thereof within the openings of the supplementary square. Apart from this firmness, the mechanism facilitates the correction of a possible error in the fixed position, by replacing the used fork with a new one. In contrast to this, the system traditionally used consists of tightening the threaded prisoner on the smooth surface of the square inserted in the handle, so that the tip of the latter prints a conical print on the square and, when an error occurs in the fixed position and it is desired to fix another close position, it turns out that the conical crater formed in the wrong fixation brings the threaded prisoner tip back to the wrong position.

Another peculiarity of the invention is that, in the proximity of the eyelashes, the elastic branches of the strap hairpin form a fold in the top that between them cover a conveniently greater measure than the one that has the hollow of the outer handle for the supplementary square. This configuration takes advantage of the elastic capacity of the fork strap so that, before fixing the threaded prisoner, the coupling inside the handle is produced with a certain pressure that facilitates the search for the desired fixing point and the maintenance thereof while the tightness of the threaded prisoner is verified.

DRAWINGS AND REFERENCES To better understand the nature of the present invention, the attached drawings represent an embodiment that is merely illustrative and not limiting.

Figure 1 is an exploded perspective view in which the assembly of the clutch device components according to the invention is shown; It includes an enlarged detail referring to the supplementary square of the outer shaft (2) and the strap fork (12).

Figure 2 is a cross-sectional orthogonal projection view showing the assembled clutch assembly in its disengaged state.

Figure 3 is like Figure 2, but referred to the state in which elastic energy is accumulating for the clutch.

Figure 4 is like Figures 2 and 3, but referred to the clutch state.

Figure 5 is like Figures 2, 3 and 4, but referred to the state in which elastic energy is accumulating for disengagement.

Figure 6 is an orthogonal projection of the side elevation of the supplementary square (11), seen frontally to the longitudinal groove (11b).

Figure 7 is like Figure 6, but referred to the strap fork (12).

Figures 8 and 9 are the top plan views of Figures 6 and 7, respectively. Figure 10 shows in longitudinal section the assembly of the parts shown in Figures 8 and 9, incorporating an enlarged detail of the coupling of the projections (12c) in the extensions (11c). Figure 11 shows in elevation a rear view of the outer handle (3) with the supplementary square (11) coupled therein.

Figure 12 is section XII-XII of Figure 11 and incorporates an enlarged detail of the fixation by means of the threaded prisoner (15).

In these figures the following references are indicated: 1.- Internal square shaft 2.- External square axis 3.- External handle 4.- Electric motor

4th.- Electric motor spindle (4)

5.- Sliding radial window 5a.- Orifice with sliding radial window (5) 5b.- Curved-concave front with sliding radial window (5) 6.- Sliding radial key

6a.- Arc-circular front of sliding radial key (6)

7.- Torsion spring 7a.- Torsion axis

7b.- First end of torsion spring (7) 7c- Second end of torsion spring (7)

8.- Nut

8a.- Nut radial opening (8) 8b.- Nut central axial hole (8) 8c- Nut radial notch (8) 9.- External nut supplement

9a.- External nut nut radial box (9) 10.- External washer

11.- Supplementary square of the outer axis (2) 11 a.- Supplementary square lace (11) 11 b.- Longitudinal slot of supplementary square (11) 11c- Longitudinal groove extensions (11 b) 11d.- Arched longitudinal groove recesses (11b) 12.- Strap fork 12a.- Fork tabs (12) 12b.- Fork openings (12)

12c- Fork projections (12) 12d.- Summit fold of fork branches (12) 13.- Interior nut supplement 14.- Interior washer 15.- Threaded prisoner

EXHIBITION OF A PREFERRED EMBODIMENT

With regard to the drawings and references listed above, a preferred embodiment of the object of the invention is illustrated in the attached drawings, referring to a clutch device in mortise locks with panic function, responding to a general constitution comprising at least , an inner shaft (1) of a square in which an inner handle of a knob or handle is installed, an outer shaft (2) of a square equipped with an outer handle (3) and an electric motor (4) provided with a spindle ( 4a) of output for actuation of the clutch device itself, the interior and exterior designations being taken, respectively, in relation to the interior and exterior sides of the lock. As can be seen in Figure 1, the clutch according to the invention consists of a radial window (5), a radial key (6), a torsion spring (7), a nut (8) that activates the lock latch, a supplement of outer nut (9), an outer washer (10), a supplementary square (11) of the outer shaft (2) and a fork (12) of U-shaped strap with right angles and that between its branches has a separation adjusted by default to the thickness of the supplementary square (11); where: the radial window (5) has a curved-concave front (5b) of the same radius as the central axial hole (8b) of the nut (8), has a complementary thickness of the width of a radial notch (8c) of the nut (8) in which this radial window (5) is located and is interposed between the tail of the radial key (6) and a second end (7c) of a torsion spring (7) that is mounted on a torsion axis (7a) and that has a first end (7b) attached to the spindle ( 4a) of the electric motor (4), whose second end (7c) loosely passes through an orified ear (5a) of the radial window (5); The nut (8) has a radial opening (8a) that is communicated with its radial notch (8c) and with its central axial hole (8b) which in its half inner body has permanent union with the inner axis (1) of square by means of an inner nut supplement (13) and an inner washer (14); The radial key (6) has an arc-circular front (6a) of the same radius as the central axial hole (8b) of the nut (8) and, on its back, is supported on the curved-concave front (5b) of The radial window (5) that is linked to the second end (7c) of the torsion spring (7), while this radial key (6) has a complementary section of said radial opening (8a) in which it is located; the outer shaft (2) of square is permanently coupled with the outer nut supplement (9) and, by means of the outer washer (10), with a socket (11a) formed at the inner end of the supplementary square (11). Further on, with the aid of Figures 2 to 5, the coupled and uncoupled states of the proposed clutch are referred, which are derived from the fact previously reflected that the radial key (6) is capable of operating between a delayed position against the spring of torsion (7), in which the arc-circular front (6a) is flush with the central axial hole (8b) of the nut (8), and an advanced position in which its arc-circular front (6a) invades the central axial hole (8b) of the nut (8) as well as in a radial box (9a) of said outer nut supplement (9) that is coupled in the middle outer body of the nut (8), whose radial box (9a) is communicated with the radial opening (8a) of the nut (8).

With respect to the supplementary square (11), it is in its entire width opened by a longitudinal groove (11 b) that is a little smaller than the diameter of a prisoner threaded (15) facing the same and that is through the outer handle (3); The fork (12) has both branches attached to the faces of the supplementary square (11) that are affected by the longitudinal groove (11 b) and, in these branches, there are two flanges (12a) that are formed at the end towards the inside of the fork (12) and which are of complementary width to that of the longitudinal groove (11 b) of the supplementary square (11), as well as these branches are perforated longitudinally by means of openings (12b) that run along the length of the sides of said longitudinal groove (11) being conveniently narrower than the same and, at its outer end, these branches form opposite protrusions (12c) that are directed into the fork (12) and are complementary to extensions (11c) which are practiced in this longitudinal groove (11b).

Another peculiarity of the invention is that, in the proximity of the eyelashes (12a), the elastic branches of the strap fork (12) form a summit fold (12d) that between them encompasses a measure conveniently greater than that of the hollow of the outer handle (3) for the supplementary square (11).

Another peculiarity of the invention is that at the edges of the longitudinal groove (11b) there are two recesses (11d) that are arched in the longitudinal direction.

Figures 2 to 5 illustrate the assembly and operation of the clutch according to the invention. Figure 2 shows the disengaged position, where the radial sliding key (6) is in its retracted position and the torsion spring (7) is in its natural state of rest; when the motor (4) is excited without the sliding radial key (6) being allowed to advance, the first end (7b) of the torsion spring (7) ascends through the spindle (4a) and produces (figure 3) the tensioning of the second end (7c) of this torsion spring (7) so that, as far as possible, it drives the output of the radial sliding key (6) to reach the clutch position shown in Figure 4; and in figure 5 the state, inverse to the previous one, of elastic load of the second is shown end (7c) of the torsion spring (7) to produce the disengagement as soon as the radial sliding key (6) is able to return to the rest position of Figure 2.

Figures 6 to 10 illustrate the constitution and mutual assembly between the supplementary square (11) of the outer shaft (2) and the strap fork (12). With respect to the supplementary square (11) in Figure 6 the longitudinal groove (11b) with its extensions (11c) and its arcuate recesses (11d) is clearly shown and, in conjunction with Figure 10, the socket (11a) is also defined. for the outer shaft (2) of square. Regarding the strapping fork (12), its configuration is clearly exposed by means of Figures 7 and 9. For its part, Figure 10 illustrates the operative assembly of the parts concerned, which is verified by inserting the tabs (12a) in a guided manner. along the longitudinal groove (11 b) until the protruding internals (12c) of the fork (12) are coupled in the extensions (11c) of this longitudinal groove (11 b), whereby such a fastening is achieved firm that allows the transport of the set without risk of detaching the strap fork (12) if it is not intended; In this figure 10 the fold fold (12d) of the branches of the strap fork (12) can be clearly seen.

Figures 11 and 12 illustrate the coupling in the handle (3). The enlarged detail is very expressive of how the placement of the threaded prisoner (15) deforms the edges of the opening (12b) so that it produces a wedge thereof on the edges of the longitudinal groove (11 b); To favor and strengthen this coining effect, arcuate recesses (11d) are provided.

Claims

R E I V I N D I C A C I O N E S

1 ^a. - Clutch device in electric mortise locks with panic function, comprising at least one inner shaft (1) of square in which an inner handle of knob or handle, an outer shaft (2) of square is installed provided with an outer handle (3) and an electric motor (4) provided with an output spindle (4a) for actuation of the clutch device itself, the interior and exterior designations being taken, respectively, in relation to the inner and inner sides. exterior of the lock, characterized in that it consists of a radial window (5), a radial key (6), a torsion spring (7), a nut (8) that activates the lock's latch, an exterior nut supplement (9 ), an outer washer (10), a supplementary square (11) of the outer shaft (2) and a fork (12) with a U-shaped strap with right angles and which between its branches has a separation adjusted by default to the thickness of supplementary square (11) ; where: the radial window (5) has a curved-concave front (5b) of the same radius as the central axial hole (8b) of the nut (8), has a complementary thickness of the width of a radial notch (8c) of the nut (8) in which this radial window (5) is located and interposed between the tail of the radial key (6) and a second end (7c) of a torsion spring (7) that is mounted on a torsion axis (7a) and that has a first end (7b) attached to the spindle (4a) of the electric motor (4), whose second end (7c) goes through playfully through an orifice ear (5a) of the radial window (5) ); The nut (8) has a radial opening (8a) that is communicated with its radial notch (8c) and with its central axial hole (8b) which in its half inner body has permanent union with the inner axis (1) of square by means of an inner nut supplement (13) and an inner washer (14); The radial key (6) has an arc-circular front (6a) of the same radius as the central axial hole (8b) of the nut (8) and, on its back, is supported on the curved-concave front (5b) of The radial window (5) that is linked to the second end (7c) of the torsion spring (7), while this radial key (6) has a complementary section of said radial opening (8a) in which it is located; the outer shaft (2) of square is permanently coupled with the outer nut supplement (9) and, by means of the outer washer (10), with a socket (11a) formed at the inner end of the supplementary square (11).

2 .- clutch device locks electric wire with antipanic function, according to the first claim, characterized in that the additional square (11) is open over its entire width by a longitudinal slot (11 b) which is of a width slightly smaller than the diameter of a threaded prisoner (15) facing it and that is through the outer handle (3); The fork (12) has both branches attached to the faces of the supplementary square (11) that are affected by the longitudinal groove (11 b) and, in these branches, there are two flanges (12a) that are formed at the end towards the inside of the fork (12) and which are of complementary width to that of the longitudinal groove (11 b) of the supplementary square (11), as well as these branches are perforated longitudinally by means of openings (12b) that run along the length of the sides of said longitudinal groove (11) being conveniently narrower than the same and, at its outer end, these branches form opposite protrusions (12c) that are directed into the fork (12) and are complementary to extensions (11c) which are practiced in this longitudinal groove (11 b).

3 .- clutch device locks electric wire with antipanic function, according to the preceding claims, characterized in that in the proximity of the flanges (12a), the branches of the fork (12) of strip form a fold in summit (12d) that between them encompasses a measure that is conveniently greater than that of the hollow of the outer handle (3) for the supplementary square (11).

4 .- clutch device locks electric wire with antipanic function, according to the above claims, characterized in that at the edges of the longitudinal groove (11 b) there are two recesses (11d) that are arched in the longitudinal direction.