ES2350218A1 - Clutch device for electric mortise locks with anti-panic function - Google Patents

Abstract

The invention relates to a clutch device for use in electric mortise locks having an anti-panic function, comprising 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 mortise locks Electrical with panic function.

Field of the Invention

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

In its general and common constitution this type of lock comprises at least one inner shaft of square in the which is installed an inner handle of knob or handle, a shaft outer square equipped with an outer handle and an engine provided with an output spindle for actuation of the own clutch device, being here and hereafter the interior and exterior designations taken, respectively, with relationship to the inner and outer sides of the lock.

Prior art

The design of this type of locks is encounters the problem of having to combine the need for offer a lot of benefits (be electric, panic and stuffing) which implies the use of a considerable number of elements that have to be organized in a very small space.

In this field it is, therefore, to achieve solutions that use a small number of components, which have simple configurations and a simple functional interrelation that promotes reliable operation and long product life no breakdowns; these goals that the various executions today known reach in some or several of them with more or less success.

Explanation of the invention and advantages

The invention that concerns us now proposes a differentiated solution that largely combines the objectives of use a small number of components that offer designs Simple and simple and reliable operation. To such objectives, the recommended clutch device consists of a radial window, a radial key, a torsion spring, a drive nut lock latch, an outer nut supplement, a outer washer, a supplementary square of the outer shaft and a "U" shaped hairpin with right 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 hole central axial of the nut, has a complementary thickness of the width of a radial notch of the nut in which this window radial is located and interposed between the tail of the key radial and a second end of a torsion spring that is mounted on a torsion shaft and having a first end attached to the spindle of the electric motor, whose second end loosely passes through an orified ear of the radial window; the nut has an opening radial that is connected to its radial notch and its hole central axial that in its inner half body has permanent union with the inner axis of square by means of a nut supplement interior and an inner washer; the radial key has a front circular arc of the same radius as the axial hole nut kernel and, on its back, is resting on the front curved-concave of the radial window that is linked with the second end of the torsion spring, while radial key has complementary section of said radial opening in which it is located; the outer square shaft is coupled permanently with the outer nut supplement and, by 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 front circular arc flush with the axial hole nut kernel, and an advanced position in which your forehead circular arc invades the central axial hole of the nut at the same time as in a radial box of a said supplement of outer nut 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 all its width opened by a longitudinal groove that is of width slightly 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 square supplementary that are affected by the longitudinal groove and, in these branches, there are two eyelashes that are formed in the end towards the inside of the fork and they are wide complementary to the one with the longitudinal groove of the supplementary square, as well as these branches are perforated longitudinally by means of openings that run along of the sides of said longitudinal groove being conveniently narrower than it and, at its outer end, these branches they form opposite outgoing opposites that are directed within the fork and are complementary to widenings 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 mortise locks.

The clutch function is produced as follows mode: when the electric motor is excited, its spindle moves the first end of the torsion spring that, with its second end, drives the radial sliding window that plays on the radial notch of the nut and which, in turn, moves the sliding radial key to that penetrates at the same time in the central axial hole of the nut and in the radial outer nut supplement box; as, through the axis outer square, and the supplementary square of this axis outside, the outer handle is rotatably coupled with the outer nut supplement, and the latter is twisted with the nut, it turns out that, when the handle is operated, the lock is open from the outside As will be seen in detail later, within of this process the torsion spring exerts a function of clutch and disengagement assurance, since when the spindle rotates and the position of the pieces still does not 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 of it, and it is elastically loaded to boost the displacement of the radial key as it Take the position that allows it.

Other functionality involved in the constitution advocated refers to the means provided for the coupling of the outer handle (of course, equally valid for a inner handle). These means are constituted by the conjunction of the supplementary square of the outer shaft and of the fork of "U" profiled strip; its functionality is 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 position desired that will be fixed by the threaded prisoner. Fixing It is very firm because the smaller width of these openings with respect to the grooves causes the threaded prisoner's entry to deform the edges of the fork openings producing a wedge of them within the openings of the square supplementary. Apart from this firmness the mechanism facilitates the rectification of an eventual error in the fixed position, by means of replacement of the used fork with a new one. In contrast with this the system traditionally used is to tighten the threaded prisoner on the smooth surface of the square inserted in the handle, so that the tip of the handle prints a tapered footprint on the square and, when an error occurs in the position set and you want to set another position next, it turns out that the conical crater formed in the wrong fixation bears the tip of the threaded prisoner back to the wrong position.

Another peculiarity of the invention is that, in the proximity of the eyelashes, the elastic branches of the fork of strip form a fold in summit that between both cover a conveniently larger than the hollow of the outer handle for the supplementary square. This configuration takes advantage of the elastic strapping capacity of the fork so that, before fixing the threaded prisoner, the coupling inside the handle occurs with a certain pressure that facilitates the search for the desired fixing point and the maintenance of the same while checking the tightening of the threaded prisoner.

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Drawings and references

To better understand the nature of the present In the attached drawings, a form of embodiment that is merely illustrative and not limitative.

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

Figure 2 is an orthogonal projection view cross section showing the clutch assembly advocated on its disengaged state

Figure 3 is like Figure 2, but referred to 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 to the disengaged

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 strapping fork (12).

Figures 8 and 9 are the plan views top of figures 6 and 7, respectively.

Figure 10 shows in longitudinal section the assembly of the parts represented in figures 8 and 9, incorporating an enlarged detail of the coupling of the projections (12c) in the extensions (11c).

Figure 11 shows a rear view in elevation of the outer handle (3) with the supplementary square (11) coupled in it.

Figure 12 is the section XII-XII of Figure 11 and incorporates a detail extended fixing by means of the threaded prisoner (15).

In these figures the following are indicated references:

one.-

Internal square shaft

2.-

Quad axis external

3.-

Outer handle

4.-

Electric motor

4th.-

Electric motor spindle (4)

5.-

Radial sliding window

5th.-

Orified radial sliding window ear (5)

5b.-

Curved-concave front of the window sliding radial (5)

6.-

Sliding radial key

6a.-

Key arc-circular front radial slide (6)

7.-

Torsion spring

7a.-

Torsion shaft

7b.-

First torsion spring end (7)

7c.-

Second end of torsion spring (7)

8.-

Nut

8a.-

Nut radial opening (8)

8b.-

Central Axial Nut Hole (8)

8c.-

Nut radial notch (8)

9.-

External nut supplement

9a.-

Radial outer nut supplement box (9)

10.-

Outer washer

eleven.-

Supplementary square of the outer shaft (2)

11a.-

Supplementary square lace (11)

11b.-

Longitudinal slot of supplementary square (eleven)

11c.-

Longitudinal groove extensions (11b)

11d.-

Arched longitudinal groove recesses (11b)

12.-

Strapping fork

12a.-

Fork tabs (12)

12b.-

Fork openings (12)

12c.-

Fork projections (12)

12d.-

Summit fold of fork branches (12)

13.-

Inner nut supplement

14.-

Inner washer

fifteen.-

Threaded prisoner

Exhibition of a preferred embodiment

Regarding the drawings and references above listed, an execution mode is illustrated in the attached drawings preferred object of the invention, referred to a device of clutch in mortise locks with panic function, responding to a general constitution comprising at least one inner shaft (1) of square in which a handle is installed inside knob or handle, an outer shaft (2) of square equipped with an outer handle (3) and an electric motor (4) provided of an output spindle (4a) for its own drive clutch device, being the interior designations and outside taken, respectively, relative to the inner sides and outside of the lock. As shown 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) lock latch actuator, a nut supplement exterior (9), an outer washer (10), a square Supplement (11) of the outer shaft (2) and a fork (12) of U-shaped strap with right angles and between its branches it has a separation adjusted by default to the thickness of the square supplementary (11); where: the radial window (5) has a front curved-concave (5b) of the same radius as the hole central axial (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 spring torsion (7) that is mounted on a torsion shaft (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 one ear orifice (5a) of the radial window (5); the nut (8) has a radial opening (8a) that communicates with its radial notch (8c) and with its central axial hole (8b) than in its inner half body It has permanent connection with the inner shaft (1) of square by means of an inner nut supplement (13) and a washer interior (14); the radial key (6) has a front circular arc (6a) of the same radius as the hole central axial (8b) of the nut (8) and, on its back, is supported by the curved-concave front (5b) of the radial window (5) which is linked to the second end (7c) of the torsion spring (7), while this radial key (6) has a section complementary to 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 the washer outer (10), with a socket (11a) formed at the inner end of the supplementary square (11). Later, with the help of Figures 2 to 5, the coupled and uncoupled states of the advocated clutch, which are derived from the fact reflected above that the radial key (6) is capable of operating between a position delayed against the torsion spring (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) while in a box radial (9a) of a said outer nut supplement (9) which is coupled in the outer half body of the nut (8), whose box radial (9a) is communicated with the radial opening (8a) of the nut (8).

Regarding the supplementary square (11) is in full width open by a longitudinal groove (11b) which is a little smaller than the diameter of a prisoner threaded (15) facing it and that is through the handle exterior (3); the fork (12) has both branches attached to the faces of the supplementary square (11) that are affected by the longitudinal groove (11b) and, in these branches, there are two tabs (12a) that are formed at the end towards the inside of the fork (12) and that are of complementary width of the one that has the longitudinal groove (11b) of the supplementary square (11), as well as these branches are perforated longitudinally by paths openings (12b) that run along the sides of said longitudinal groove (11) being conveniently narrower than the same and, at its outer end, these branches form each other outgoing opposites (12c) that are directed into the fork (12) and are complementary to extensions (11c) that 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 enters both cover a measure conveniently larger than the one hollow of the outer handle (3) for the supplementary square (eleven).

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

Figures 2 to 5 illustrate the assembly and the 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 radial sliding key (6) is allowed to advance, the first end (7b) of the torsion spring (7) ascends by the spindle (4a) and produces (figure 3) the tension of the second end (7c) of this torsion spring (7) so that, as soon as possible, push the exit of the sliding radial 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 end (7c) of the torsion spring (7) to produce the disengaged as soon as the sliding radial key (6) is in conditions return to the rest position of figure 2.

Figures 6 to 10 illustrate the constitution and the mutual mounting between the supplementary square (11) of the shaft exterior (2) and strapping fork (12). Regarding the square Supplementary (11) in Figure 6 clearly shows the groove longitudinal (11b) with its extensions (11c) and its arcuate recesses (11d) and, in conjunction with Figure 10, the fit is also defined (11a) for the outer shaft (2) of square. Regarding the strapping fork (12) its configuration is clearly exposed by means of figures 7 and 9. On the other hand, figure 10 illustrates the operational assembly of the parts concerned, which is verified guiding the tabs (12a) along the groove longitudinal (11b) until the protruding internals (12c) of the fork (12) are coupled in the extensions (11c) of this longitudinal groove (11b), whereby such a clamping is achieved firm that allows the transport of the whole without risk of detach the strap fork (12) if it is not intended; in this figure 10 the fold in summit (12d) of the branches of the strapping fork (12).

Figures 11 and 12 illustrate the coupling in the handle (3). The expanded 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 (11b); favor and strengthen this coining effect the recesses are planned arched (11d).

Claims (4)

1. Clutch device in electric mortise locks with panic function, comprising, at least, an inner shaft (1) of a square in which an inner handle of knob or handle, an outer shaft (2) of square equipped 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 outer sides 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 latch, an external 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 gap 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 interposed between the tail of the radial key (6) and a second end (7c) of a torsion spring (7) which is mounted on a torsion shaft (7a) and having a first end (7b) attached to the spindle (4a) of the electric motor (4), whose second end (7c) loosely passes 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 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 the outer washer (10), with a socket (11a) formed at the inner end of the supplementary square (11). 2. Clutch device in electric mortise locks with panic function, according to the first claim, characterized in that the supplementary square (11) is in its entire width opened by a longitudinal groove (11b) that is slightly smaller than the width 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 (11b) 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 (11b) of the supplementary square (11), as well as these branches are perforated longitudinally by means of openings (12b) that run along the sides of said longitudinal groove (11) being conveniently narrower than it and, at its outer end, these branches form opposite protrusions (12c) that are directed into the fork (12) and are complementary to extensions (11c) that are practiced in this longitudinal groove (11b). 3. Clutch device in electric mortise locks with panic function, according to the preceding claims, characterized in that, in the vicinity of the flanges (12a), the branches of the strap fork (12) form a summit fold ( 12d) which between them cover a measure that is conveniently larger than the one in the outer handle (3) for the supplementary square (11). 4. Clutch device in electric mortise locks with panic function, according to the preceding claims, characterized in that at the edges of the longitudinal groove (11b) there are two recesses (11d) that are arched in the longitudinal direction.