CZ18014U1 - Clutch device with a anti-lock function for electromechanical locks - Google Patents

Abstract

The invention relates to a clutch device with a panic function for electromechanical locks. According to the invention, the clutch shaft (7) comprises a cylindrical part (14) and the inner end (16) thereof is equipped with a truncated-pyramid-shaped clutch head (19) which can fit into the sliding coupler for a second slide-adjusted pin (21) which passes through the wide openings (13) in the clutch body (6). A reciprocal recess (22) is provided in the sliding coupler opposite the clutch head (19). Moreover, a sliding ring (9), which is equipped with a peripheral channel (23), is slidably adjusted in relation to the crown (12) of the clutch body (6) and comprises a pair of holes (24) into which the second pin (21) is inserted. A tubular shaft (10), which is used to rotate the follower of the lock, comprises: a hollow cylindrical space (25) which is rotation adjusted in relation to the cylindrical part (14) of the clutch shaft (7), and an outer shell with a square cross-section which is preferably identical to that of the outer shaft (2).

Description

Coupling device with anti-lock function for electromechanical locks

Technical field

The present invention relates to a clutch device having an anti-locking function for electromechanical locks, comprising at least an inner shaft of an outer shaft in which an inner handle or crank is installed, an outer outer shaft with an external crank, and an electric motor with a screw to activate the clutch device. the inner and outer markings are considered relative to the inner and outer sides of the lock, respectively.

As is known in electromechanical locks, there are electrical and electronic means which, when excited by recognizing a valid code existing in the key, card, biometric recognition unit, waves of any type or any other means known per se, open the lock.

It is further known that the anti-blocking function consists in allowing the lock to be opened from the inside under any circumstances, i.e. even when the lock is closed for access from its outside.

BACKGROUND OF THE INVENTION

With respect to locks with anti-blocking function, the mechanism of the two coaxial shafts is well known, one shaft extending inside the other and one directly connected to the rotary handle of the outside of the door and the other to the inside. One solution is presented in the Spanish utility model U-9102250. Another solution is disclosed in the European patent EP 0 819 810

Bl, from HEWI Heindrich Wilke GmbH, in which the fact that there are shafts working together within each other is considered known and therefore cannot be claimed.

Coupling mechanisms are also known in locks employing one or more internal portions which, by means of a translational movement, precisely control the rotation of the key on the lock mechanism. There are various solutions for this, for example in the Spanish patents P-480078 and P-9102323 and also in the Spanish utility model U-250150 of the same holder.

The use of elastic energy storage means is also known in the case of locks, in particular electronic locks, which energy will be suitably used during manipulation of the lock. One such solution is disclosed in the Spanish utility model U-295286.

The essence of the technical solution

In view of the prior art, the present invention provides an anti-blocking clutch comprising a clutch body, a clutch shaft, a sliding clutch coupling, a sliding ring and a tubular shaft; wherein the clutch body is coupled when rotating with an inner outer shaft and is a small cup having a rotatable inner shaft assembly and forming a coaxial cavity of polygonal cross-section whose walls form a cylindrical crown inside it having two wide holes axially spaced and diametrically opposed ; wherein the clutch shaft has a cylindrical portion limited at its inner and outer extremities in such a manner that the outermost end has a square cross section corresponding to an axial bore of the outer outer shaft, which is tubular and has a transverse bore for the first pin installed through the outer shaft; and the inner extreme end has a truncated pyramid-shaped clutch head, wherein the sliding-shift clutch coupling coupler is interwoven with a hollow space for a second pivot with slidable adjustments that extend through the wide holes of the clutch body and face a recess corresponding to the clutch head; the sliding ring is formed with a circumferential channel, having a sliding shift relative to the crown of the clutch body and a pair of holes for receiving the second pin; wherein the tubular is used to rotate the lock roller and comprises a cylindrical space which is rotatably adjusted relative to the cylindrical portion of the clutch shaft and has an outer shell of a square cross section, which preferably coincides with the cross section of the outer shaft, and

The tubular shaft has two holes for two third pins coupled through a side wall of the cup formed by the clutch body.

In this solution, there are two coaxial shafts cooperating within each other as well as internal clutch means operating by axial sliding, but the final configuration is different in its parts and in its various combinations from all and each one of the parts known in the art of this solution and also their functions.

In the claimed solution, the slidable clutch coupler operates within the clutch body cup and by means of a second pin the ring is connected to a pin which can slid along wide openings between an unconnected position in the bottom of the cup and another clutch position spaced from this bottom in which the recess of this sliding coupler coupled to the clutch head of the clutch shaft. In this coupling position, the clutch shaft is coupled to a sliding coupler via an external crank which, when rotated, pulls the clutch body with it, which also pulls the tubular outer shaft activating the lock. This means that the clutch shaft slid with the outer crank does not transmit its rotation directly to the tubular shaft, but transmits its rotation through the clutch device, which is permanently coupled when rotating with the outer shaft. Thus, in the non-coupling position, acting through the outer handle does not cause rotation of the tubular shaft because the coupling shaft coupled thereto has a cylindrical portion just coinciding with the tubular bore of the tubular shaft and thus cannot pull. On the other hand, the pivotal coupling between the inner shaft and the tubular shaft is permanent, so that the lock can always be opened from the inside in any clutch situation (whether coupled or disengaged), thereby providing an anti-locking function.

It is possible to immediately evaluate the small number of components used, as well as the ease of their individual design and the way in which they are assembled. All of this translates into smaller tolerances, which in turn transmit to smaller clearance dimensions and hence greater functional reliability. In this regard, it is important to emphasize the great compactness of the clutch assembly due to the sliding displacement 25 of the clutch ring and the sliding coupler both on the outside and inside of the clutch body and with its precise guidance, which also facilitates maintaining correct axial alignment.

As a further special feature of the present invention, tangential paths for the first elastic rods are provided in the circumferential channel of the slidable ring, which are anchored transversely to the pivotably mounted pin, which itself has a second elastic rod that is perpendicular to the first elastic rods and in the helical channel of the electric motor bolt. This solution makes it possible that if, due to improper handling or accidentally, the sliding coupling head and the clutch head are not in alignment when the motor is started, the bolt may cause the second rod to move (by being unable to rotate the pin due to inability to move the ring) which energizes the first rod and thereby stores the elastic energy, which, once the correct alignment has been reached, will spring up and cause the ring to move to achieve subsequent clutch engagement. As can be seen, this is a simple way of utilizing the accumulation of elastic energy for later use, but in a different way from what is cited as known in the art.

Another feature of the technical solution is that, due to its horizontal rest position, the outer handle has a rectangular axis (shaft) having two opposite horizontal sides therebetween which are connected via a convex curved face through the end to which the outer handle extends in conjunction with the rotation of this outer handle at the opposite end of these horizontal sides there is a symmetrically convexly curved back which connects to the horizontal sides by bevelled tracks, one of the horizontal sides, preferably the lower, being supported against a vertically sliding platform which is preferably installed on the two spiral coil springs, while on the other of these horizontal sides, there is a pair of rocker arms that are symmetrical to the rotation of the outer handle and which consist of first and second arms mounted so that at rest the first arm rests against the respective side wall of the housing on which the outer handle is mounted, and in the case of a rocker arm situated on the side towards which the outer handle extends, its second arm has its tip sensitively in contact with the upper horizontal side on which it converges with a convexly curved face, and in the case of a second rocker arm, its second arm remains in front of

The corresponding bevelled track is capable of pivoting in a direction in which their second arm pivots towards the outside crank and against the elastic action of the spring, and on the rear housing cover there are horizontal elongated open paths receiving working rotation of the second arms of the rocker arms; preferably the cradle arm springs are the end branches of the rails mounted on the bushing pin located centrally between the two cradle arms. As will be explained below, this solution allows the outer handle installed in the lock to be reversed in a very simple manner without the need to remove it or use special tools.

For a better understanding of the nature of the present invention, a preferred embodiment of its industrial implementation is shown in the accompanying drawings, but is of a purely illustrative and non-limiting example.

BRIEF DESCRIPTION OF THE DRAWINGS

Giant. 1 is an exploded perspective view showing the subject matter of the invention. An enlarged detail of a longitudinal section of the inner axle (1) and the clutch body (6) is included, and another enlarged detail of the inlet (22) of the sliding coupler (8) aligned with the head (19) of the clutch axis (7).

Giant. 2 shows the device of FIG. 1 in a disconnected position and viewed in longitudinal section and in enlarged detail, but omitting the outer handle (3) and the unclosed axle (7) of the coupling except its outer extreme end.

Giant. 3 is a section taken along the line II-I-II in FIG. 2.

Giant. 4 and 5 are equivalents for Figures 2 and 3, respectively, but showing the coupled position.

Giant. 6 and 7 are rear views of the housing (40) and without the cover (42) illustrating the normal operation of the outer handle (3) according to the invention.

Giant. Figures 8, 9 and 10 are similar to Figures 6 and 7 and show the inverting function without dismantling, which relates to the outer handle (3) according to the invention.

Giant. 11 is a rear perspective view of the housing (40) with its housing (42) showing, in enlarged detail, a window (43) of the rear housing (42) through which the second cradle arm (39) can be seen and accessed.

In these drawings, the following reference numerals are indicated:

I - inner axis

2 - outer axis

- external handle

- electric motor

- engine screw

- coupling body

7 - Clutch axis

- sliding coupling coupling

- sliding ring

- tubular axis

II - coaxial cavity of the body

12 - cylindrical crown body

- wide windows on the crown

- cylindrical part of the clutch axis

- the outer end of the clutch axis

- the inner end of the clutch axis

17 - transverse opening from the outer end

- first latch

- coupling head at the inner end

- sliding sliding coupler opening

- second latch

22 - re-entry in sliding clutch

- j CZ 18014 Ul

- peripheral channel of the sliding ring

- sliding ring slots

- cylindrical space of the tubular axis

- punching of the tubular axis

27 - third latches

- pin

- first elastic rods

- second elastic rod

- horizontal sides on the outer handle

32 - convexly curved forehead

- convexly curved back

- skewed

- vertically sliding platform

- coil compression springs

37 - rocker arms

- the first cradle arm

- a second cradle arm

- housing for outer handle

- spring for rocker arms

42 - rear housing cover

- oblong holes in the housing

- a vertical pin in the housing

- rotary cylindrical axis.

Examples of technical solution

In the drawings and in conjunction with the aforementioned reference numerals, a preferred embodiment of the present invention, referred to as an anti-blocking clutch device for electromechanical locks, comprising at least an inner axis I of a steel bar with a square cross-section on which an internal knob or crank, an external shaft 2 of steel rod with a square cross section, completed with an external crank, and an electric motor 4 formed with an output screw 5 for operating the clutch device are mounted, the inner and outer (outer) designations refer to inner and outer respectively lock; and wherein the existence of an electric motor with a screw (worm) is common without the prerequisite that technological means may need to be provided to ensure timely activation of the electric motor.

Figure 1 shows an embodiment of a proposed clutch device comprising a clutch body 6, a clutch axis 7, a sliding clutch coupler 8, a sliding ring 9 and a tubular axis 10; wherein the coupling body 6 is rotatably coupled to the inner axis I of a square steel section and is a cup having a rotatable assembly integrated with the inner axis 1 and having a coaxial cavity 11 having a polygonal cross-section whose walls form an externally cylindrical crown 12 is formed with two windows 13 cut out axially and diametrically opposed, wherein the coupling axis 7 has a cylindrical portion 14 set between two ends, an outer end 15 and an inner end 16, in such a way that the outer end 15 has a square cross section corresponding to an outer axial slot a rectangular steel rod 2 with a tubular cross-section having a transverse bore 17 for the first pawl 18 installed through this outer axis 2, and the inner end 16 having a frustoconical clutch head 19 with a sliding coupler 8 of the coupling is intersected by the connecting hole 20 for d a sliding latch 21 which, with the slidably displaceable adjustment, passes through the cut-out windows 13 of the clutch body 6 and has an entry point 22 that faces and corresponds to the clutch head 19, the slidable displacement ring 9 being formed with the circumferential channel 23; to the crown 12 of the clutch body 6 and has a pair of apertures 24 for attaching the second pawl 21, wherein the tubular axis 10 is what pulls the pawl of the lock pivotably, has a cylindrical bore 25 rotatable relative to the cylindrical portion 14 of the clutch axis 7, and has a square exterior a cross-section preferably corresponding to that of the outer axis 2

18014 U1 of square steel, and wherein the tubular axis 10 has two punches 26 for receiving third latches 27 connected through a side wall of the cup formed by the clutch body 6.

The assembly of the components is shown in Figures 2 and 3. Figure 2 together with Figure 1 illustrates another feature of the present solution, namely that each side of the circumferential channel 23 of the sliding ring 9 has its associated first elastic rod 29 which are tangentially mounted and fixed laterally to a pivotably mounted pin 28, to which is also attached a second elastic rod 30, which is perpendicular to the first elastic rods 29 and which is embedded tangentially in the spiral groove 5 of the electric motor 4. In this assembly, the inner shaft 1, the clutch body 6, the slidable coupler 8 and the cylindrical shaft 10 only rotate: the first two because they are either one or two components joined together, the clutch body 6 and the slidable coupler because they are coupled over the second pin 21, and the clutch body 6 and the cylindrical shaft 10 because they are coupled via third pins 27. As for the outer the shaft 2, is rotatably coupled to the outer end 15 of a square section bar belonging to the clutch shaft 7, the cylindrical portion H of which is mounted with a rotatable adjustment within the hollow cylindrical space 25 of the cylindrical shaft 10.

The operation of this assembly is very simple. As regards the out-of-engagement position (unconnected position in Figures 2 and 3), it is noted that when the outer shaft 2 is rotated, the clutch shaft 7 is also rotated through its outer end 15, but the cylindrical shaft 10 which would rotate the lock roller it does not rotate with it, because the cylindrical portion 14 of the clutch shaft 7 can rotate freely within the seat of the cylindrical shaft W. On the other hand, as mentioned above, the actuation of the inner shaft 1 causes the cylindrical shaft 10 to rotate accordingly. the anti-blocking function of the clutch device. Referring now to the clutch engagement position (see Figures 4 and 5), the action of the inner shaft 1 remains as before; on the other hand, now that the outer shaft 2 is rotating, it also causes the cylindrical shaft 10 to rotate because the frusto-conical clutch head 9 on the clutch shaft 7 is coupled to the sliding coupler and causes the clutch body 6 to rotate if If applied to the elastic energy storage means, which (in the event of being out of alignment between the sliding coupler 8 and the coupling head 19) is released by sliding the sliding ring 9 as soon as the alignment is restored after starting the electrical 3, 5. In Fig. 3, if there is no proper alignment for engaging the clutch, the second rod 30 would move to the position of Fig. 5, but the first rods 29 would not be able to slide and accumulate. would elastic energy that Once the alignment has been restored, would cause displacement of the work sliding ring 9 and these first rod 29 is shifted into the situation shown in FIG fifth

Figures 6 to 11 show an embodiment and function of one feature according to the present invention. Here, in conjunction with its horizontal rest position, the outer handle 3 has a shaft sleeve which comprises two horizontal sides 31 which are opposed to each other and are connected at the end to which the actual outer handle 3 extends by a convexly curved face 32. As the outer handle 3 is rotated, a reverse 33 is symmetrically convexly curved at the opposite end of these horizontal sides 31, which is a continuation of the horizontal sides 31 through respective chamfers 34. One of the horizontal sides 31, preferably lower, rests on a vertically sliding platform 35 Meanwhile, in conjunction with the other of these horizontal sides 31, there is a pair of rocker arms 37, which are arranged symmetrically with respect to the rotation of the outer handle 3 and are outwardly of the first arms 38 and the second arms 39. These arms they are us arranged so that, when at rest, the first arm 38 bears against the respective side wall of the housing 40 in which the outer handle 3 is mounted, while in the case of the rocker arm 37 located on the side towards which the outer handle 3 extends, its second the arm 39 has its tip suitably in contact with the upper of the two horizontal sides 31 at the end at which this side passes into a convexly curved face 32. In the case of the second rocker arm 37, its second arm 39 is positioned opposite the side with corresponding bevels 34, wherein the rocker arms 37 are able to rotate in the sense that their second legs 39 rotate in the direction in which the

The crank 3 protrudes against the elastic action of the springs 41. In the rear cover 42 of the housing 40 there are respective extended horizontal holes 43 which surround the working pivot path of these second legs 39 of the rocker arms 37. A preferred solution is shown in which the springs 41 opposing the rocker arms 37 are mounted at respective ends of the same tongue around a pin 44 located inside the housing 40 and midway between the two rocker arms 37. Figures 6 and 7 respectively show the rest and engagement positions of the outer handle 3 whose engagement position is achieved by compression down from the vertical rest position of the platform 35 against the elastic action of the helical compression springs 36. A truly important feature of this solution, as shown in Figures 8 and 10, is in particular that the outer handle 3 can be priced without disassembly, offering advantages y if they do not agree with the respective side (right or left on the door), thus allowing immediate turning without the need for any special tools. Reversing is performed starting from the position shown in Figure 8. The rocker arm 37 mounted to the left is moved and then the outer handle 3 can be rotated in the opposite direction to the opening direction (Figure 9) until it reaches the position of Figure 10 in which the convexly curved face 32 comes in contact with the second arm 39 of the second rocker arm 37, from where it causes the rocker operation in the opposite direction to the original rocker arm 37. To achieve displacement of the original rocker arm 37, all that is required is insertion of a screwdriver tip, nail or the like into the corresponding an elongated opening 43, which is located in the rear cover 42 of the housing 40; wherein the rocking of the rocker arms opposes the counteracting elastic action of the springs 44.

The rotatable cylindrical shaft 45 in its various cylindrical or internally square forms with the same dimensions as the portion 10 allows it to rotate freely coaxially with respect to the shaft 14, protecting it against improper external use.

Claims (4)

25 1. A clutch device having an anti-lock function for electromechanical locks comprising at least one inner shaft (1) of a square cross-section on which an internal knob or handle is installed, one outer shaft (2) of a square cross-section, for and an electric motor (4) formed with an output spindle (5) for actuating the clutch device itself, the interior and exterior designations refer to the interior and exterior respectively. 30, comprising a clutch body (6), a clutch shaft (7), a sliding clutch coupling (8), a sliding ring (9), and a tubular shaft (10); wherein the clutch body (6) is rotatably coupled to the inner shaft (1) of the square bar and is a support track having a rotatable assembly in conjunction with the inner shaft (1) having a coaxial cavity (11) of polygonal cross-section whose walls forming on the outside a cylindrical crown (12) which is formed with windows (13) that are almond-shaped on this shaft and diametrically opposed, the clutch shaft (7) having a cylindrical portion (14) limited on each side, at the outer end (15) and at the inner end (16), in such a way that the outer end (15) has a square cross-section that corresponds to the axial bore of the outer shaft (2) of a square cross-sectional bar that is tubular and cross-drilled (17) for the first latch (18) installed 40 through the outer shaft (2), and the inner end (16) has a truncated pyramid-shaped coupling head (19), the slidably movable coupling coupling (8) having a transverse bore (20) for receiving a second pawl (21) which slidingly slidably extends through the almond-shaped windows (13) on the clutch body (6) and has a recess (22) that faces and corresponds to the clutch head (19), the sliding ring (9) comprising a circumferential channel (23), slidably adjustable relative to the crown (12) of the clutch body (6) and has a pair of holes (24) for receiving a second pawl (21), the tubular shaft (10) being a shaft rotatably rotating the lock roller and having a cylindrical bore ( 25) with a rotatable adjustment relative to the cylindrical portion (14) of the clutch shaft (7) and has a square outer surface preferably coincident with the surface of the outer shaft (2) of the rod, 18014 U1 of square cross-section, and wherein the tubular shaft (10) has two perforations (26) for each of the third pawls (27) coupled over a side wall of the support path formed by the clutch body (6). The anti-blocking clutch device for electromechanical locks according to the preceding claim, characterized in that the first elastic rods (29) which are laterally anchored to the transverse channel (23) of the slidable displacement ring (9) are tangentially mounted. a pin (28) mounted in a rotatable manner and also having a second elastic bar (30) that is perpendicular to the first elastic bars (29) and which is embedded in a tangentially in the spiral groove of the spindle (5) of the electric motor (4). A clutch device with an anti-lock function for electromechanical locks according to the preceding claim, characterized in that, due to its horizontal neutral position, the outer handle (3) has a shaft sleeve having two horizontal sides (31) opposite each other. which, at their ends towards which the crank (3) protrudes, are connected by a convexly curved face (32), while due to the rotational displacement of the outer crank (3) at the opposite end of these horizontal sides (31) is a symmetrical convexly curved back 33), 15 which connects two horizontal sides (31), each of which is chamfered (34), wherein one of the horizontal sides (31), preferably the lower side, is mounted against a platform (35) slidable vertically, which is preferably mounted on two helical pushers the springs (36), while on the other horizontal side (31) are a pair of rocker arms (37) which are mounted symmetrically with respect to the pivotable movement of the outer handle (3) and which comprise first arms (38) and a second 20 of the arm (39) in such a way that in the neutral position the first arm (38) remains mounted against the respective side wall of the housing (40) in which the outer handle (3) is fixed and in the case of a rocker arm (37) , towards which the outer handle (3) protrudes, its second arm (39) has its tip definitely in contact with the upper horizontal side (31) at the end at which it meets the convexly curved face (32), and in the case of the second cradle shoulders 25 (37) its second arm (39) remains facing the corresponding tapered side (34), wherein the rocker arms (37) are very prone to rotate in the direction in which their path of the arm (39) rotates in the direction extending outwardly the handle (3), and against the elastic action of the springs (41), and wherein there are two holes (43) in the rear cover (42) of the housing (40), each having a horizontal shape that includes a working path of rotation of the second arms (39) cradle arms 30 (37). The anti-blocking clutch device for electromechanical locks of claim 3, wherein the counter-acting cradle springs (41) of the cradle arms (37) are each mounted at the outer ends of the same end in a pin (44) of the housing (40) located in the housing. center between the two rocker arms (37). The clutch device with anti-lock function for electromechanical locks according to claim 1, characterized in that the rotatable cylindrical shaft (45) in its various cylindrical or square-shaped arrangements on the outside with dimensions corresponding to the component (10) allows free rotation in a coaxial manner with respect to the shaft (14) protected from misuse from the outside.