EP0889183A1 - Lock for swinging doors, sectional doors or roll-up doors, whereby the handle is freely rotatable in the locked position - Google Patents

Abstract

The lock has a housing (1) with a control mechanism (2) for a lock, a rotating handle (4) and a clutch mechanism (8, 10, 14, 15) between the handle and the control mechanism. The rotating handle (4) is attached to a transmission device (8) with lugs (9). The control mechanism (2) for the lock has a catch (10) which has two positions, an active position when it is in contact with the lug on the transmission device and an inactive position when it is outside the trajectory of the lugs. The elastic components (16) hold the catch in its inactive state and can only be moved into its active position by activating the lock unit (5) or the internal control mechanism (7).

Description

The present invention relates to a lock for overhead doors, doors in sections or curtains, of the type comprising a box, at minus a control member for a lock, a rotary handle, a device of engagement between said handle and said control member for a lock, a lock block and possibly a control member internal, said interlocking device being capable of taking two configurations, including an active configuration, in which it establishes a connection between the handle and said control member, so that the handle is able to activate said lock, and an inactive configuration, in which it does not establish this connection between the handle and said control member, so that the handle is not able to actuate said lock and it remains mad, said interlocking device remaining normally in its inactive configuration and can be moved in its configuration activates by actuating said lock block or, if it exists, said internal control.

A type of lock as mentioned above may be preferred, in particular general, to a type of lock in which the handle is normally locked and can be turned only after the consent of the lock block, because in this last type of lock the handle can be forced by applying a high force, and in order to sufficiently prevent this possibility the parts of the lock must be made in a very massive form and therefore heavy and expensive. However, most locks for overhead doors, sectional doors or curtains belong to the latter type, because, in consideration of the structure of the locks intended for these applications, it is not easy, as in other types of locks, to realize an interlocking device capable of leaving the handle mad when the lock is closed.

Locks with loose handles in the closed position have been already proposed in Italian patent applications Nos. Ml 95 A 000 075 and Ml 95 A 000 076; these locks offer very good benefits, but their latching device, which works as a front latching, is designed for use in a lock with four locking points, and it strike the cost of the lock considerably.

Therefore, an object of the present invention is to provide a lock for overhead doors, sectional doors or curtains, which have usually one or two closing points, including an interlocking device which should be likely to leave the handle crazy at least in its closed position, making it become active only when the lock block or an internal control member has been operated, and which must be solid, secure, of a substantially simple structure and of easy construction and assembly and therefore relatively economical.

Another object of the invention is to produce such a lock in which all moving parts of the lock are subject only to displacements in perpendicular planes of the axis of rotation of the handle, which allows a substantial simplification of the structure and assembly operations of the lock. Another goal is to achieve such lock whose assembly can be carried out mechanically by robots. Another goal is to make such a lock which can be made with reduced thickness. It is also a goal to achieve such a lock in which no part is subject to high stresses, so that there is no need to resort to massive construction of any part.

These aims are achieved, in a lock of the type recalled, in that the rotary handle is integral with a transmission member provided with lugs, that said control member for a lock is provided with a pawl capable to take two positions, including an active position in which it can engage a lug of said transmission member to be actuated therefrom, and an inactive position in which it is outside the trajectory of lugs of said transmission member so that it cannot be actuated therefrom, that first elastic means normally stress said pawl towards its inactive position, and that a body of consent, mobile under the action of the lock block and possibly of said internal control member, is arranged to neutralize the action of said first elastic means and allow or control the movement of said pawl in its active position.

Thanks to these provisions, all the movable parts of the lock are subject only to displacements in perpendicular planes of the axis of rotation of the handle, which allows a substantial simplification of the structure and assembly operations of the lock, which can be easily mechanized, and in addition allow the realization with a thickness scaled down. In addition, no part of the lock can be subjected to high efforts, so there is no need to resort to a construction massive from no party.

In a first embodiment of the lock according to the invention, said consent body is limited to neutralizing the action of said first elastic means for allowing said pawl to move towards its position active, and this movement is carried out by second elastic means which act on the pawl with a force more reduced by the force of said first elastic means and which therefore do not have the possibility of acting until that said first elastic means are active.

In a second embodiment of the lock according to the invention, on the contrary, said consent body acts positively on the pawl against the action of said first elastic means, by controlling or enabling the movement of the pawl towards its active position.

Said pawl can be shaped in order to cooperate in both sense, in its condition of activity, with the lugs of the transmission organ, for positively controlling said control member for a lock either in opening than in closing, or else said pawl can be shaped as to cooperate only in one direction, in its position of activity, with the lugs of the transmission member, for positively controlling said member for a lock when opening but not closing, the closure being in such case ensured by elastic third parties, acting on the control member for the lock.

When said pawl positively controls either the opening that the closure, preferably a fourth elastic means is arranged to act between a control member and the box, so as to stabilize the two positions of the control unit.

The lock according to the invention can be produced with a control for a lock only, provided with said pawl, or it can be carried out with two control elements for two locks, one of these control members being provided with said pawl, and a tilting lever being pivoted in said box and being engaged with the two control members to ensure corresponding displacements in opposite directions.

Advantageously, there is provided an elastic member arranged to act against the lugs of said transmission member in order to stabilize by triggers elastic of the prefixed positions of the handle.

An elastic member can also be provided to stabilize the position of said consent body.

Two or more of the functions of elastic organs mentioned can be entrusted to a single elastic organ.

Fig. 1 montre en vue frontale une serrure conforme à un premier mode de réalisation suivant l'invention, en position de fermeture;

Fig. 2 en montre une section longitudinale;

Fig. 3 est une vue similaire de celle de la figure 1, mais la serrure étant disposée pour l'ouverture;

Fig. 4 est une vue similaire de celle de la figure 1, mais la serrure étant en position d'ouverture;

Fig. 5 montre en vue frontale une serrure conforme à un deuxième mode de réalisation suivant l'invention, en position de fermeture;

Fig. 6 est une vue similaire de celle de la figure 5, mais la serrure étant disposée pour l'ouverture;

Fig. 7 est une vue similaire de celle de la figure 5, mais la serrure étant en position d'ouverture.

These and other characteristics, objects and advantages of the object of the present invention will emerge more clearly from the following description of two embodiments, constituting nonlimiting examples, with reference to the appended drawings, which are somewhat shown schematically, in the sense that only the parts necessary for understanding the invention have been shown. In these drawings:

Fig. 1 shows in front view a lock according to a first embodiment according to the invention, in the closed position;

Fig. 2 shows a longitudinal section thereof;

Fig. 3 is a view similar to that of FIG. 1, but the lock being arranged for the opening;

Fig. 4 is a view similar to that of FIG. 1, but the lock being in the open position;

Fig. 5 shows in front view a lock according to a second embodiment according to the invention, in the closed position;

Fig. 6 is a view similar to that of FIG. 5, but the lock being arranged for the opening;

Fig. 7 is a view similar to that of FIG. 5, but the lock being in the open position.

The lock shown in Figures 1 to 4 is of a type (called "turn") in which either the opening or the closing of the lock must be ordered by rotation of the handle; on the contrary, the lock shown in Figures 5 to 7 is of a type (called "spring") in which only the opening of the lock must be controlled by rotating the the handle, while closing is carried out automatically by a spring.

Referring first to Figures 1 to 4, a lock according to the first embodiment of the invention comprises a box 1, at least one control unit 2 for a lock (but in this case also a second control member 3 for another lock), a rotary handle, which is shown only the hub 4 having a prismatic graft for coupling the external part (not shown) of the handle, a lock block 5 (in this case a so-called European cylinder) with its bit 6, and an internal member 7 for controlling the opening.

A rotary member 8 is integral with the rotary handle 4 provided with lugs 9, and the control member 2 is provided with a pivoted pawl 10 in 11 to this body. The pawl 10 can take two positions, including an active position (Figures 3 and 4), in which he can engage a lug 9 of the transmission member 8 to be actuated, and a position inactive (Figure 1), in which it is outside the trajectory lugs 9 of the transmission member 8, so that it cannot be operated. The pawl 10 is under the action of a spring 12, of relatively strong reduced, which tends to rotate it in the vicinity of the organ of transmission 8, that is to say, to bring it to its active position.

In the box 1 is pivoted at 13 a consent device 14-15 in the form of a rocking lever, with an arm 14 which interferes with the trajectory of the bit 6 of the lock block 5, and an arm 15 which, under the action of a spring 16, pushes the pawl 10 towards its inactive position, making it penetrate for this purpose into a notch 2 ′ of the control member 2. Au arm 15 of the consent member is connected to the internal control member 7 of the opening. The springs 12 and 16 are proportioned in such a way that the action of the spring 16 must prevail over the action of the spring 12, so that in the configuration according to Figure 1 the pawl 10 is retained in its inactive position. In this condition, because the transmission member cannot engage the pawl 10, the handle 4 is crazy. However it is about the handle 4 cannot turn in an uncontrolled way, and at this effect a second arm 17 of the spring 16 is pressed against the lugs 9 of the transmission member 8 and it retains the handle 4 in a stable position, all without preventing a controlled rotation. In addition, the commitment of the arm 15 with the notch 2 ′ of the control member 2 retains in the position of closing this control member.

The device described operates as follows. We said that in the condition closing according to Figure 1 the handle 4 is crazy and the body control 2 is blocked, so that the lock cannot be opened. But if the lock block 5 is actuated by its corresponding key, the bit 6 during its rotation pushes the arm 14 of the consent member and turns it, moving the arm 15 away from the pawl 10, against the action of the spring 16. The spring 12 is then free to move the pawl 10 by making it interfere with the trajectory of the lugs 9 of the transmission member 8. If, as turns out under normal conditions, at the moment considered a lug 9 is located in an appropriate position, the pawl 10 engages this lug (like the shows figure 3); but, even if this situation should not turn out, said engagement would take place later, following a subsequent rotation of the handle 4. Note that the same situation arises if, instead of operating by the key the lock block 5, the internal control member was actuated of the opening 7, by directly moving the arm 15 of the consent member, against spring action 16.

When the condition of Figure 3 has been reached, a rotation of the handle 4 and the transmission member 8 cause, due to the engagement between a lug 9 and the pawl 10, the movement of the control member 2 in the open position according to FIG. 4. In this position the arm 15 of the consent member is pressed against the side of the control member 2, and therefore it cannot push the pawl 10, which therefore remains engaged with the transmission member 8. Starting from the lock block 5 can be taken back to rest, or else the internal control member 7 can be abandoned.

Then the lock can be closed again by acting on the handle 4 and, reaching the closing condition of FIG. 1, the arm 15 of the consent organ, which is no longer leaning against the side of the consent organ command 2, pushes the pawl 10, neutralizing the action of the spring 12 and returning the pawl to its inactive position. So we can notice that this lock is of the so-called "turn" type, in which the closure must be controlled by the handle.

As is clear from the above, the transmission member 8, the pawl 10 and the consent organ 14-15 constitute an interlocking device between the handle 4 and the control member 2 for a lock, and this interlocking device is likely to take two configurations, including an active configuration, in which it establishes a connection between the handle and the controller, so that the handle is able to operate the lock, and an inactive configuration, in which it does not establish this connection between the handle and the control member, so that the handle is unable to operate said lock and remains mad, said device normally in its inactive configuration and can be moved in its active configuration by actuating the block lock or, if there is one, the internal control member for the opening.

Alternatively, it is possible to provide that the handle remains crazy also in the open position of the lock, when desired. AT this effect it is sufficient that in the control member 2 is provided, in plus the notch 2 ′ already described, also a second notch 2 "(FIG. 4), disposed in front of the arm 15 of the consent member when the lock is found in the open position. In this case, also in the latter position the spring 16 is able to overcome the force of the spring 12 and push the pawl 10, moving it to its inactive position and thus making go crazy the handle.

It is appropriate that a pin spring 18 (shown only in Figures 1 and 2) stabilizes the open and closed positions of the organ 2 to prevent possible accidental movements.

In cases where (as in the example shown) the lock has, in addition to the main control member 2 for a lock, also a second control member 3 for another lock, this second member control 3 is slaved to the first control member 2 by means of a rocking lever 19 mounted rotating in the box 1 (for example coaxial with the handle 4) and the ends of which are engaged with the two members of command 2 and 3, to force them to make contemporary trips, equal and opposite.

The lock shown in Figures 5 to 7 is, on the contrary, of the type called "spring loaded", in which only the opening must be controlled by means of the handle, while closing takes place automatically by the action of a spring.

Referring to Figures 5 to 7, a lock conforming to the second embodiment of the invention comprises a box 21, at least one control member 22 for a lock (but in this case also a second control member 23 for another lock), a rotary handle, of which only the hub 24 is shown having a graft prismatic for the coupling of the external part (not shown) of the handle, a lock block 25 (in this case a so-called European cylinder) with its bit 26, as well as, optionally, an internal control member of the opening (not shown). The control member 22 is requested vice versa its closed position by a spring 27.

The rotary handle 24 is integral with a transmission member 28 provided with pins 29, and the control member 22 is provided with a pawl 30 pivoted at 31, in a sliding manner, to this member by means of a slot 33. The ratchet 30 can take two positions, one of which is active (Figures 6 and 7), in which it can engage a lug 29 of the transmission 28 to be actuated, and an inactive position (FIG. 5), in which it is outside the trajectory of the pins 29 of the member transmission 28, so that it can not be actuated. Ratchet 30 is under the action of a spring 32, which tends to make it slide and rotate to move it away from the transmission member 28, that is to say, to bring it towards its inactive position. In the configuration according to FIG. 5, the pawl 30 is therefore retained by the spring 32 in its inactive position.

In the box 21 is pivoted (in the example, coaxial with the lock block 25) a consent device 34-35 in the form of a tilting lever, with an arm 34 which interferes with the trajectory of the bit 26 of the block lock 25 and also with the path of part of the pawl 30, and an arm 35 which cooperates with a profiled spring 36, which stabilizes two operating positions from the consent body 34-35. To the consent body 34-35 is connected the internal control member of the opening, if there is one. To to prevent the handle 24 from turning in an uncontrolled manner, a second arm 37 of the spring 36 is pressed against the pins 29 of the member transmission 28 and it retains the handle 24 in a stable position, all without prevent a controlled rotation.

The device described operates as follows. We said that in the condition closing according to Figure 5 the handle 24 is crazy and therefore the lock cannot be opened. But if the lock block 25 is actuated by its corresponding key, the bit 26 during its rotation pushes the arm 34 from the consent body and turns it; the fact that the arm 34 of the organ of consent also interferes with the trajectory of the pawl 30, the latter is moved by sliding upwards against the action of the spring 32, and by the reaction of the latter, which applies a torque to the ratchet relative to the pivot 31, it is turned and it is prone to interfere with the trajectory of the pins 29 of the transmission member 28. If, as appears under normal conditions, in the moment considered a lug 29 is in an appropriate position, the pawl 30 engages this lug (as shown in Figure 6); but even if this situation should not happen, said engagement would take place later, following a subsequent rotation of the handle 24. It should be noted that the same situation arises if, instead of operating the lock block with the key 25, the internal opening control member connected to the consent body 34-35.

When the condition of Figure 6 has been reached, the consent body 34-35 is retained in its position by the profiled spring 36, and the block lock 25 can be renewed at rest, or the control member internal can be abandoned. Then, a rotation of the handle 24 and the transmission member 28 causes, due to the engagement between a lug 29 and the pawl 30, the movement of the control member 22 in its position opening of FIG. 7. In this position, the pawl 30 remains retained, thanks to the shape of its hook, until the handle 24 is retained in its position, and in this condition the overhead door must be opened, door in sections or curtain, to which the lock is applied. As soon as the handle 24 is abandoned, the pawl 30 emerges from the transmission member 28 and the spring 27 renews the control member 22 in its position closing according to figure 5.

Then, when the overhead door, door in sections or curtains, is closed again, the bolt, which must have an inclined surface, so well known, when it comes into contact with a lock, is pushed back by temporarily compressing the spring 27, then it triggers elastically by engaging the lock; in this way the closing is carried out automatic spring loaded.

As is clear from the above, the transmission member 28, the pawl 30 and the consent member 34-35 constitute an engagement device between the handle 24 and the control member 22 for a lock, and this interlocking device is capable of taking two configurations, including an active configuration, in which it establishes a link between the handle and the control member, so that the handle is able to activate the lock, and an inactive configuration, in which it does not establish not this connection between the handle and the control member, so that the handle is unable to operate said lock and remains insane, said latching device normally in its inactive configuration and can be moved in its active configuration by actuating the lock block or, if there is one, the internal control member for the opening.

In cases where (as in the example shown) the lock has, in addition to the main control member 32 for a lock, also a second control member 33 for another lock, this second member control 33 is slaved to the first control member 32 by means of a rocking lever 39 mounted rotating in the box 21 (for example pivoted in 20) and the ends of which are engaged with the two control members 32 and 33, to force them to make contemporary trips, equal and opposite.

From the above it appears that the invention is capable of application in many types of locks for overhead doors, sectional doors or curtains, whether tower type or spring type, and are they with only one lock or two locks. It also stands out clearly that the structure of the lock is relatively simple, given of its performance, and that its manufacture and assembly pose no particular problem, so it is substantially economical.

It should be understood that the invention is not limited to the modes of realization which has been described and represented as examples. Several modifications are within the reach of the skilled person. For example, the transmission organ 8 or 28 has been shown with four lugs, but the number of its pins can be different; in the first embodiment the main lock was assumed to be the one 2 at the top, and in the second mode 22 which is at the bottom, but these provisions can be reversed; the lock block 5 or 25 was assumed to be of the so-called European cylinder type, but also other kinds of mechanisms can be used, whether they are with a rotary bit or with a lock movable in translation. Furthermore it is possible to apply in these locks, by modifications known from the state of the art, different embodiments of the internal control unit by hand, either by providing that it automatically resets complete operation (closing or opening), either on the contrary, by providing that it must be activated voluntarily after the operation.

These and other modifications and any replacement by means technically equivalent can be worn within the framework defined by the claims.

Claims (11)

Lock for up-and-over doors, sectional doors or curtains, from type comprising a box (1; 21), at least one control member (2; 22) for a lock, a rotary handle (4; 24), a latching device (8, 10,14,15; 28,30,34,35) between said handle (4; 24) and said control member (2; 22) for a lock, a lock block (5; 25) and possibly a internal control member (7), said interlocking device being capable of to take two configurations, including an active configuration, in which it establishes a connection between said handle (4; 24) and said member control (2; 22), so that the handle is able to actuate the said lock, and an inactive configuration, in which it does not establish this connection between the handle and said control member, so that the handle (4; 24) is unable to operate said lock and remains insane, said latching device normally remaining in its inactive configuration and can be moved in its active configuration by actuating said lock block (5; 25) or, if there is one, said internal control member (7), characterized in that the rotary handle (4; 24) is integral with a member transmission (8; 28) provided with lugs (9, 29), that said member control (2; 22) for a lock is provided with a pawl (10; 30) capable of to take two positions, including an active position in which he can engage a lug (9; 29) of said transmission member (8; 28) for being actuated therefrom, and an inactive position in which it is outside the trajectory lugs (9; 29) of said transmission member (8; 28) so that it cannot be actuated by it, only first elastic means (16; 32) normally urge said pawl to its inactive position, and that an organ consent (14,15; 34,35), movable under the action of the lock block (5; 25) and possibly of said internal control member (7), is disposed to neutralize the action of said first elastic means (16; 32) and allow or control the movement of said pawl (10; 30) in its position active. Lock according to claim 1, characterized in that said member of consent (14,15) is limited to neutralizing the action of said first elastic means (16) for allowing the displacement of said pawl (10) towards its active position, and that this movement is carried out by second elastic means (12) which act on the pawl (10) with greater force reduced by the force of said first elastic means (16) and which therefore have no opportunity to act until said first elastic means (16) are active. Lock according to claim 1, characterized in that said member of consent (34,35) acts positively on the pawl (30) against the action of said first elastic means (32), by commanding or enabling moving the pawl (30) to its active position. Lock according to claim 3, characterized in that it comprises an elastic member (36) arranged to stabilize the position of said member of consent (34.35). Lock according to claim 1, characterized in that said pawl (10) is shaped to cooperate in both directions, in its condition activity, with the pins (9) of the transmission member (8), to positively control said control member (2) for a lock either both in opening and closing. Lock according to claim 5, characterized in that a fourth elastic member (18) is arranged to act between a control member (2) and the box (1), in order to stabilize the two operating positions of the control member (2). Lock according to claim 1, characterized in that said pawl (30) is shaped to cooperate in one direction only, in its activity position, with the pins (29) of the transmission member (28), to positively controlling said control member (22) for a latch in opening but not closing, the closure being provided by third parties elastic means (27), acting on the control member (22) for the lock. Lock according to claim 1, characterized in that it comprises a control member (2; 22) for a lock only, provided with said ratchet (10; 30). Lock according to claim 1, characterized in that it comprises two control elements (2,3; 22,23) for two locks, one of these control members (2; 22) being provided with said pawl (10; 30), and a lever tilting (19; 39) being pivoted in said box (1; 21) and being engaged with the two control members (2,3; 22,23) for moving them corresponding in opposite directions. Lock according to claim 1, characterized in that it comprises an elastic member (17; 37) arranged to act against the pins (9; 29) of said transmission member (8; 28) in order to stabilize by triggers elastic of the prefixed positions of the handle (4; 24). Lock according to one or more of the preceding claims, characterized in that two or more of the mentioned functions of the organs elastic are entrusted to a single elastic member.

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