ES2686547T3 - Electronic lock for windows and doors - Google Patents

Abstract

Electronic lock for windows and doors including a cylinder (1) with a stator (2) inside which is a rotor (3) having a cavity (15); its rotation being activated when a key is inserted into said rotor (3), said cylinder (1) including at least one mechanical locking device and at least one electromechanical locking device with an electronic code; said electromechanical locking device has a locking element (14), a rotating actuator (11), a body (10) containing said actuator (11), a first electronic circuit and a mandrel (16), activated by said actuator (11 ), connected to a cam (17), to move said locking element (14) along a guide (18) of said body (10) to engage and disengage with said cavity (15) of said stator (2) , said locking element (14) being a bolt, said cam (17) having a semi-cylindrical seat that can move said bolt along said guide (18), characterized by the fact that, said locking element (14) It has been made with magnetism-sensitive material, said lock includes magnetic means (30) for maintaining said blocking element (14) between said rotor (3) and said stator (2) inside said cavity (15) thereof and so that said magnetic means (30) keep said element (14) always separate from dich to cam (17), rotating together with said actuator (11).

Description

5

10

fifteen

twenty

25

30

35

40

Four. Five

fifty

DESCRIPTION

Electronic lock for windows and doors

The present invention relates to an electronic lock for windows and doors.

It is well known that there are different types of locks on the market that include a cylinder defined by a stator inside which is a rotor that is turned through the use of a key.

Specifically, in electronic locks, the cylinder sometimes includes a mechanical locking device with a pin code and an electromechanical locking device with an electronic code, so that when the mechanical code and the electronic code of the cylinder correspond to those of the key, it is possible to turn the rotor inside the stator.

Among the electronic locks that are currently available in the market, some have all the electromechanical components located in the rotor, to enable a lock with a mechanical locking device and turn it into a lock with a mechanical or electromechanical locking device or only with a electromechanical locking device and vice versa.

In this way the stator can also receive, for example, a rotor with an electromechanical locking device or vice versa a rotor with only a mechanical blocking device or a rotor with both mechanical and electromechanical locking devices.

Consequently, the replacement of a locking cylinder allows the quick and easy transition of a lock with a mechanical locking device to one with an electromechanical and mechanical locking device, and vice versa, without replacing all the parts of the cylinder thereof.

In any case, it should be noted that all electronic locks of this type have an actuator that is activated with a very small amount of energy and for this reason it must be completely free of friction and / or mechanical links, which, with the passing of the time, they could impair its proper functioning.

For all this, these locks normally have the locking element located between the stator and the rotor, which is always kept well away from the actuator and any of its connecting parts, in order to avoid any point of contact with it and any negative friction and / or any mechanical link. This lock for example is disclosed in WO 03/100199 A1. Therefore, a spring is normally used for this purpose to act directly or indirectly on the locking element to separate it from the actuator.

In the case of a direct action on the blocking element the spring has to be of a particular shape and therefore has to be carried out for this purpose, since it is not available in the market.

Normally, in case of indirect action, an axis of rotation is used to act on the blocking element under the force exerted by the spring, here of a traditional type.

Consequently, such a lock inevitably has a large number of components, causing a more complicated construction and a more difficult assembly process, which causes higher production and sales costs. A lock according to the preamble of claim 1 is disclosed in EP 1 134 335 A2. The objective of this invention is to eliminate the inconveniences that arise in the current state of the art.

To achieve this, an important objective of this invention is to provide an electronic lock for windows and doors that has a simplified structure and group, while still offering a high level of reliability over a long period of time.

It is also an objective of the present invention to produce a lock that can be built and sold at low cost because of its very limited number of components.

It is also an objective of the present invention to produce a lock with very low impact on the construction systems in use for cylinders with a mechanical locking device.

This, and all other objectives, are achieved with an electronic lock for windows and doors, as defined in claim 1. Further features and advantages of the invention are best evidenced through the description of a preferred embodiment, but non-exclusive, highly flexible locking for windows and doors according to the invention, illustrated in the attached drawings for illustrative purposes only, in which:

- Figure 1 is a longitudinal cross-sectional side view of the lock cylinder according to the invention;

- Figure 2 is a longitudinal cross-sectional top view of the lock cylinder according to the invention;

- Figures 3 and 4 are a view along section 3.3 of Figure 1 showing the opening and closing system of the lock according to the invention;

5

10

fifteen

twenty

25

30

35

40

Four. Five

fifty

With reference to the figures described above, the lock according to the invention includes a cylinder (1) including in a manner known per se a stator (2) inside which a rotor (3) is located, its rotation being operated when a key is inserted into it (key not shown).

The exemplified cylinder includes a traditional mechanical locking device indicated with the number 5 with flat vertical key and bolts aligned in the stator and in coplanar alignment with the rotor opening in which the key is inserted.

Specifically, this solution requires that the key hole be positioned vertically, although that can also be applied to a horizontal key hole.

In addition, the cylinder also has an electromechanical locking device indicated globally with the number 6, displaying an electronic code so that when the mechanical code and the electronic code of the cylinder (1) correspond to those of the key, it is possible to turn the rotor (3) inside the stator (2).

Specifically, the rotor (3) has a seat (30) on one or both of its sides where the electromechanical locking device (6) is located, showing a compartment (10) housing an actuator (11), a first electronic circuit (12) and a straight line movement mechanism (13) that can engage and disengage a blocking element (14) with a cavity (15) inside the stator (2).

In one or several areas of the cavity (15) there is advantageously a permanent magnet (30) (in any way, but preferably cylindrical) connected to the blocking element (14) and seated in front of it.

Thus, as noted in Figure 3 and Figure 4, the locking element (30) is always kept separate from the cam (17) that rotates integrally with the actuator (11).

Therefore the cam (17) is never subjected to friction or other mechanical links and consequently the actuator (11) can be activated even when the amount of energy is very limited.

The blocking element (14) has been conveniently made of metal that is sensitive to the magnetic attraction exerted by the permanent magnet, so that the former is attracted to the latter.

The cavity (15) in which the permanent magnets (30) are located can be made directly in the stator or created with an application (31) of a different material, one that is more resistant with respect to the stator.

Instead of the permanent magnet / magnets (30) a part of the application (31) or the cavity (15) can be magnetized to achieve the same function of the permanent magnet.

In a preferred solution, the straight-line movement mechanism (13) includes a mandrel (16) that is activated by the actuator (11), such as a motor or an electoiman with a limb connected to the cam (17), the rotation of which locks or releases the blocking element (14) of the magnet (30), as noted.

The latter is defined for example with a bolt moving along a guide (18) of the body (10) so as to engage or disengage with the cavity (15) of the stator (2).

The cam (17) has a semi-cylindrical seat (19) that extends and joins the bolt (14).

Clearly, the cavity (15) is located on the internal surface of the stator (2), so as to be in front of the guide (18) of the body (10), so that the rotation of the cam (17) (figure 3) keep the bolt (14) inside the cavity (15), thus blocking the rotor inside the stator, while, vice versa, when the bolt (14) is in front of the semi-cylindrical seat (19) , the rotor is free to rotate inside the stator, since the bolt is moved in the seat (19), thus exceeding the magnetic force of the magnet (30).

The operation of the lock for windows and doors according to the invention is evident by observing everything that has been described and illustrated.

In particular, after having introduced the key in the rotor and therefore the mechanical code and the electronic code of the key and the cylinder correspond, the cam (17) rotates and through the rotation of the rotor in the stator the bolt ( 14) disengages from the magnet (30) and the cavity (15), thereby allowing the opening of the lock.

In addition, the lock according to the invention has been equipped with a mechanical reset mechanism that can block the electromechanical locking device, preventing the rotation of the rotor (3) when the key is removed from the same rotor (3).

In practice, the mechanical reset group rotates the cam (17), causing the bolt or the blocking element (14) to block against the magnet (30) and, therefore, inside the cavity (15) of the stator.

In this way the rotor (3) cannot rotate in the stator (2) and the lock cannot be opened.

It should be noted that the lock of the invention is especially useful for displaying a permanent magnet that always keeps the blocking element (14) away from the cam (17), so that the actuator (11) can be unaffected.

The invention conceived in this way can be subject to various modifications and variations, all within the scope of the concept of the invention, as defined in the appended claims; In addition, all the details can be substituted with elements that are technically equivalent.

In practice, the materials used and dimensions can be changed according to technological needs and advances.

Claims (6)

5 10 fifteen twenty 25 30 1. Electronic lock for windows and doors including a cylinder (1) with a stator (2) inside which is a rotor (3) having a cavity (15); its rotation being activated when a key is inserted into said rotor (3), said cylinder (1) including at least one mechanical locking device and at least one electromechanical locking device with an electronic code; said electromechanical locking device has a locking element (14), a rotating actuator (11), a body (10) containing said actuator (11), a first electronic circuit and a mandrel (16), activated by said actuator (11 ), connected to a cam (17), to move said locking element (14) along a guide (18) of said body (10) to engage and disengage with said cavity (15) of said stator (2) , said locking element (14) being a bolt, said cam (17) having a semi-cylindrical seat that can move said bolt along said guide (18), characterized by the fact that, said locking element (14) it has been made with magnetism sensitive material, said lock includes magnetic means (30) to maintain said blocking element (14) between said rotor (3) and said stator (2) inside said cavity (15) thereof and so that said magnetic means (30) keep said element (14) always separated from said cam (17), rotating together with said actuator (11). 2. Electronic lock for windows and doors according to claim 1, characterized in that said magnetic means include at least one permanent magnet (30) located in a respective seat of said cavity (15). 3. Electronic lock for windows and doors according to claim 1, characterized in that said magnetic means include at least a magnetized part of said cavity (15). 4. Electronic lock for windows and doors according to claims 1 or 2, characterized in that said rotor (3) shows a seat or at least one of its sides that can accommodate said electromechanical locking device. 5. Electronic lock for windows and doors according to any one of the preceding claims, characterized in that said cavity (15) is in said stator (2) and in front of said guide (18) of said body (10) . 6. Electronic lock for windows and doors according to one or more of the preceding claims, characterized in that it includes a mechanical reset group adapted to block said electromechanical locking device, preventing the rotation of the rotor (3) when removing the key from the rotor (3) .