Patent Description:
Several door and window closing devices are available in the prior art. Some of these devices already incorporate magnets.

<CIT> refers to a system for detecting the position of at least one moveable element of a window or door, wherein the system comprises at least one sensor for sensing a magnetic field, at least one sensor configured such that the magnetic field sensed changes at least one moveable element; and processor means configured to receive output signals associated with the sensed magnetic field from the sensor and to determine the position of at least one moveable element; wherein the system is configured to operate in a calibration mode and a normal mode, wherein in the calibration mode the system is configured to register at least one output value from at least one sensor when the moveable element is at a first predetermined position as a corresponding first reference value and wherein in the normal mode the processor means is configured to use at least the first reference value in determining the position of at least one moveable element.

<CIT> describes a magnetic field generator for use in a locking device for locking a door or window and an adjacent building element, including a permanent magnet; a housing portion for receiving the magnet; an adjustment mechanism for allowing the adjustment of the position of the magnet in the housing.

<CIT> describes a closing device for windows and doors comprising a striker, a lock and a front wall adapted to selectively assume a locking configuration and a retaining configuration. The movement of the latch according to a closing direction is caused by the magnetic interaction between a magnetic abutment system and a magnetic closing system.

<CIT> describes a lock bolt ejection mechanism with two magnets mutually pushed comprises a lock body, a second magnet block provided outside the lock body, a rotary lock bolt mechanism and a bolt withdrawing mechanism. The rotary lock bolt mechanism includes a rotary bolt and a first magnet block fixed at the rotary lock bolt. The rotary lock bolt can rotate around self rotation axis or a rivet or a pin therethrough. The rotary lock bolt, the first magnet block and the bolt withdrawing mechanism are provided in the lock body. The rotary lock bolt mechanism is actuated by the second magnet block and the bolt withdrawing mechanism. The inclined bolt of the lock with the lock bolt ejection mechanism need not extend out of the lock body and does not rub against and impact the doorframe.

<CIT> discloses a door tip lock of a temporary locking type, having no protrusion on the outer surface of a sliding door or a strike. It discloses a lock casing provided in the end part of a sliding door incorporating therein a sensor pin which is extensible and retractable to and from a front, a cam plate pushed forward at a locking angle when the sensor pin is retracted, and a hook metal adapted to project from the front so as to engage with a strike when the cam plate is turned to the locking angle. Further, a magnet, adapted to approach the front when it is forward, is provided in the pointed end part of the sensor pin, and another magnet is provided to the strike. When the sliding door is closed, the repulsive force of the magnet is applied to the other magnet which is therefore moved back when the sliding door is closed.

<CIT> describes a locking system for a pre-locked bolt of an espagnolette lock of a multiple locking system within a striking plate on a frame of a door.

<CIT> discloses low profile actuating window lock for casement windows having a longitudinal slot in a sidewall of the casing for the lock, wherein a fork component translates within the slot in a direction perpendicular to an axis of rotation of the handle and the handle rotates along a plane perpendicular to the fork component, the handle pivotable about a restrictor arm that pivots relative to the casing, allowing the handle to rotate fully from the locked position to the unlocked position with low clearance from the window frame. The pivot points of the handle and restrictor arm configuration allow for an over center linkage that prevents back driving the casement window lock.

These facts are described in order to illustrate the technical problem solved by the embodiments of the present document.

The invention is defined by a closure for sliding door or window comprising a lock with clamp for closure of the sliding door or window on a latch and a latch device for closure of the sliding door or window in said lock with clamp as defined in claim <NUM>. The latch device for closure of a sliding door or window in a lock with clamp comprises a latch and a latch case with said latch on one face of said case, wherein the latch pivots between a retracted position in the latch case and a protruding position from the latch case;
wherein the pivoting latch comprises a magnet arranged in the latch with a first magnetic pole oriented outwardly on said face to receive, preferably create, a magnetic repulsive force from a second magnetic pole, having the same polarity as the first pole and oriented opposite to the first magnetic pole, from another magnet placed in the lock so that the latch pivots from the retracted position to a protruding position to be locked by the clamp on approaching said lock.

In an embodiment the latch has an inclination of <NUM>° with respect to the latch case when in the protruding position.

In an embodiment, the position of the latch center of mass is located so as to cause a moment in the latch that causes the latch to rotate with respect to an axle, leading to the retracted position when no other force is exerted on the latch, namely repulsive forces by the magnets. The latch center of mass allows this device not to use springs or other elements when the latch moves to the retracted position. It allows the latch to be correctly positioned inside the latch case, without protruding, even if it presents slight angular deviations in its application.

In an embodiment, the latch pivots from the retracted position to a protruding position when the lock magnet is at a distance equal to or less than <NUM>.

In an embodiment, the latch comprises an axle for pivoting the latch. Preferably, the axle is located in the latch case.

In an embodiment, the latch comprises a recess for receiving and locking the clamp for locking the door or window.

In an embodiment, the magnet is fixed to the latch by fixing means selected from screws or an adhesive.

In an embodiment, the latch device is fixed for mounting in a door or window frame. The latch device can be fixed directly to the door, i.e. the latch device is a device that is fixedly mounted in a door or window frame.

According to the invention the lock with clamp for closure of a sliding door or window on a latch comprises a lock case for receiving said latch on one face of said case, and comprising a magnet arranged in the lock with a first magnetic pole oriented outwardly on said face to receive, preferably create, a magnetic repulsive force from a second magnetic pole, having the same polarity as the first pole and oriented opposite to the first magnetic pole, from another magnet placed on said latch so that the latch pivots from the retracted position to a protruding position to be locked by the clamp on approaching said lock.

In an embodiment, said lock comprises a knob so that the clamp moves from a retracted position to a locking position. More specifically, the user presses the displaceable knob which comprises an axle to interact with the clamp, causing the clamp to move into the recess of the latch and thereby lock the latch and lock the sliding door or window.

In an embodiment, the knob comprises an axle and the clamp comprises a fork to receive said axle for the knob to move the clamp from a retracted position to a locked position, and vice versa.

In an embodiment, the fork is at an end opposite to a portion of the clamp to lock the latch.

In an embodiment, the knob is slideable.

In an embodiment, the magnet is fixed to the lock by fixing means selected from screws or adhesives.

In an embodiment, the lock with clamp is moveable for mounting on the door or window. The lock with clamp can also be mounted on the door frame.

The main advantages of the present invention are to present a solution wherein:.

For an easier understanding, figures are herein attached, which represent preferred embodiments which are not intended to limit the object of the present description.

The present invention relates to a closure for sliding door or window comprising a lock with a clamp for closure of the sliding door or window on a latch and a latch device for closure of a sliding door or window in a lock with clamp, comprising a latch and a latch case with said latch on one face of said case, wherein the latch pivots between a retracted position in the latch case and a protruding position from the latch case; wherein the pivoting latch comprises a magnet arranged in the latch with a first magnetic pole oriented outwardly on said face to create a magnetic repulsive force from a second magnetic pole, having the same polarity as the first pole and oriented opposite to the first magnetic pole, from another magnet placed in the lock so that the latch pivots from the retracted position to a protruding position to be locked by the clamp. The closure also comprises the lock with clamp comprising a lock case for receiving said latch on one face of said case, and comprising the other magnet arranged in the lock with a first magnetic pole oriented outwardly on said face to create a magnetic repulsive force from a second magnetic pole, having the same polarity as the first pole and oriented opposite to the first magnetic pole, from the magnet placed on said latch so that the latch pivots from the retracted position to a protruding position to be locked by the clamp.

<FIG> represents an embodiment of the closure wherein A represents the latch device; B represents the lock with the clamp and C and D are the actuators.

<FIG> represents an embodiment of the closure comprising the latch device A and the lock with the clamp B.

<FIG> represents an embodiment of the closure comprising the latch device A and the lock with the clamp B in exploded view, wherein <NUM> represents a nut, <NUM> represents the bridle, <NUM> represents a latch case, <NUM> represents the latch, <NUM> represents the frame fixing plate, <NUM> represents a screw, <NUM> represents the front of the lock, <NUM> represents an anti-friction element, preferably a polymeric tape, <NUM> represents the clamp, <NUM> represents the lock case, <NUM> represents an axle, <NUM> represents the magnet to be arranged in the latch <NUM>, <NUM> represents a magnet to be arranged in the lock.

The anti-friction element allows friction and noise caused by the movement of the clamp to be reduced.

<FIG> represents the operation of the present invention. In particular, <FIG> shows the latch device A and the lock with clamp B in a spaced apart position. In this situation, the latch <NUM> is in the retracted position, being necessary to approach the lock with clamp B to carry out the movement thereof. <FIG> shows the latch device and the lock with clamp in an approximate position, without locking. In this position, the latch <NUM> moves to the protruding position, rotating around the axle <NUM>. More specifically, the movement of the latch <NUM> is due to the repulsion caused by magnets <NUM> and <NUM> (shown by arrows in opposite directions). In this situation, the clamp <NUM> is in the upper position, i.e., it is in the unlocked position, that is, in the retracted position, and it is possible to move the lock with clamp again, which allows the door to be opened. <FIG> shows the latch device and the lock with clamp in an approximate position, with locking. In this situation, the clamp <NUM> has been moved from an upper position to a lower position, as shown by the arrow, locking the latch <NUM>, which is in the protruding position, preventing the movement of the lock with clamp B, which prevents the door from opening. The movement of the clamp is carried out by the displaceable knob which comprises an axle <NUM> and that allows the movement of the clamp up and down. In an embodiment, when the lock with the clamp, comprising the fixing plate <NUM>, is at a distance of more than <NUM> from the latch device A, the latch <NUM> is in the retracted position, the magnet <NUM> being parallel to the latch device <NUM>. The retracted latch position results from the latch center of mass which allows it to remain retracted in the latch case, since no magnetic repulsive force is present. Preferably, the magnet <NUM> of the latch device is in a position parallel to the position of the magnet <NUM> of the lock with clamp, so that the repulsive force between the magnetic poles of each magnet causes the latch <NUM> to pivot, allowing the latch to move to the protruding position. The attachment of the magnet <NUM> to the latch <NUM> can be by screw <NUM> or by an adhesive material such as glue. When the lock with the clamp B is at a distance equal to or less than <NUM> from the latch device A, the latch <NUM> moves from a retracted position to a protruding position, due to the magnetic repulsive force between the magnet <NUM> of the latch device and the magnet <NUM> of the lock, causing the latch <NUM> to be inclined by <NUM>° in relation to the latch case <NUM>.

In an embodiment, to lock the door or window, a clamp <NUM> is used that moves vertically guided in a case <NUM>, which in turn is locked in the latch <NUM> that is installed in the frame of a door or in the frame of a window. More specifically, latch <NUM> comprises a recess for receiving and locking the clamp <NUM> and thereby locking the door or window.

In a preferred embodiment, for the user to move the clamp, he/she needs to move the knob <NUM>. Preferably, the knob <NUM> comprises an axle <NUM> that moves the clamp to the latch lock or latch unlock position.

In an embodiment, the clamp <NUM> comprises a fork for receiving the axle <NUM> of the actuation device D.

In an embodiment, the actuation of the latch <NUM> is carried out through the use of magnets <NUM> and <NUM>. The latch <NUM> is actuated by magnetic forces caused by the magnets <NUM> and <NUM> which are positioned so as to cause the repulsion thereof.

As soon as the systems approach, the magnetic repulsive force causes the latch <NUM> to rotate around an axle <NUM>, being projected to the outside only from that moment, leaving the latch <NUM> in the protruding position.

The latch system <NUM>, together with the magnet <NUM> and the screw <NUM> or another fixing system such as adhesives, were developed in such a way that its center of mass causes its movement to the retracted position through gravity, thus avoiding the use of springs in the system. The position of its center of mass guarantees that the latch <NUM> is correctly positioned inside the latch case, even if it presents slight angular deviations in its application. This change avoids the existence of protruding elements whenever the door is open.

The use of magnets ensures that there is no rigid lockage in the event that the door or window is closed with the clamp <NUM> in the closed position, making the latch <NUM> recoil whenever they contact through the outer faces.

In an embodiment, the polarity of the magnet <NUM> of the latch device is equal to the polarity of the magnet <NUM> of the lock with clamp, so that the magnetic repulsive force is created when the lock with clamp B is at a distance equal to or less than <NUM> from the latch device A and when the latch <NUM> moves. That is, the magnet <NUM> is with a first magnetic pole oriented towards the outside of the face of the latch case <NUM>, to create a magnetic repulsive force from a second magnetic pole, having the same polarity as the first pole of magnet <NUM>, with said poles being oriented in opposite directions.

The magnets can have any geometric shape, preferably round, square or rectangular.

In an embodiment, <FIG> represents the actuators of the lock with the clamp B, wherein C does not comprise the displaceable knob and D comprises the displaceable knob <NUM>. The displaceable knob allows the user to lock the door or window once that this knob is in contact with the axle <NUM> that will move the clamp <NUM> of the lock up or down, depending on the locking option of the latch <NUM> and unlocking of the latch <NUM>.

In an embodiment, <FIG> represents an embodiment of the actuators of the lock in an exploded view, wherein <NUM> represents the front of the actuator D; <NUM> represents the plate for hiding the mechanism, <NUM> represents the base, <NUM> represents the positioning magnet, <NUM> represents a knob, <NUM> represents the cover, <NUM> represents a cover attachment screw, <NUM> represents an axle of the actuation system, <NUM> represents a fixing screw for the axle of the actuation system and <NUM> represents the plate to allow opening/unlocking from the outside.

<FIG> represents an embodiment of the assembly of actuators C and D in the lock with clamp B. The lock with clamp B is actuated by the vertical displacement of the displaceable knob <NUM>.

<FIG> represents an embodiment of the actuator D comprising the displaceable knob. The displaceable knob <NUM> is produced in a material with magnetic properties, being attracted by the positioning magnet <NUM>. This attraction ensures that the displaceable knob <NUM>, once moved to the unlocked position, remains in this same position until an external force is exerted on the knob <NUM> to move to the locked position. While the knob <NUM> remains in the unlocked position, the clamp <NUM> remains in the upper position, preventing involuntary closing of the system.

<FIG> represents an embodiment of the actuator D in the lock with clamp B. The vertical displacement caused by the displaceable knob <NUM> causes the vertical displacement of the axle <NUM> and respectively of the clamp <NUM>. The movement between the axle <NUM> and the clamp <NUM> is carried out by the contact between the two elements, since the axle <NUM> is inserted in the clamp <NUM>, in the area of the fork. This location allows the lock with clamp B and actuators C and D to be connected together without the need for fixing elements.

<FIG> represents the opening of the lock with clamp B from the outside of the door, using actuator C. In actuator C, the plate to allow opening from the outside <NUM> has a geometry that allows the passage of a coin, key, or other accessory of similar geometry to allow the vertical displacement of the axle of the actuation system <NUM>, which allows the door to be opened from the outside in emergency cases.

In an embodiment, the user activates the system by moving the knob <NUM> vertically, which transmits the movement to an axle <NUM> which is secured to the knob <NUM> by a screw <NUM>. The axle <NUM> is produced in a polymeric material in order to reduce friction and noise when in contact with the lock. This axle is mounted by the user according to the thickness of the door.

In an embodiment, the knob <NUM> can have another displacement such as, for example, radial with respect to the axle, rotary, among others.

To validate the opening and keep the closure in the open position, the actuator D has a magnet <NUM> housed in its structure in order to create the attraction of the knob <NUM>, which in turn is made of a metal with magnetic properties. Once in the unlocked position, it is necessary to apply an external force to move the knob <NUM> to the locked position. This force gives the user the feeling of validation of the closure.

In emergency cases it is possible to open the door from the outside with an external tool such as a coin or key, using the slots created in the plate to allow opening from the outside <NUM>, allowing the system to be used in places for public use.

The plates to allow opening from the outside <NUM> can be exchanged for plates without slots, making it impossible to open the door from the outside in cases of greater security or even to market the product without an opening mechanism.

In an embodiment, the movable components are guided in a polymeric base or shell, where the user can place his hand, never having contact between metallic components, in order to guarantee low noise and friction between them. This component also has several cavities on the outside thereof to allow better placement of an adhesive or other fixing element to install on the door.

In an embodiment, <FIG> represents the approach of the latch device A with the lock with the clamp B, in the lower position, in which with the repulsive force from the magnets <NUM> and <NUM>, the latch <NUM> is in the protruding position. <FIG> represents the lock B with the clamp <NUM> in the lower position, i.e., the locking position, and since the magnetic repulsive force from the magnets <NUM> and <NUM> causes the latch to protrude, the outer faces of the latch <NUM> and clamp <NUM> collide. However, the collision causes latch <NUM> to recoil. Latch <NUM> movement is only caused by the repulsion from magnets <NUM> and <NUM> and does not result from the action of mechanical elements, thus not damaging the various components when closing the door with the clamp in the lower position.

In an embodiment, the arrows in <FIG> represent the repulsive forces of the magnets since the poles are equal, said poles being oriented in opposite directions, causing the latch to move to the protruding position. That is, if the magnet of the latch device has the magnetic pole oriented towards the frame fixing plate, then the magnet of the lock will also have the same polarity oriented towards the front of the lock. For example, if the latch magnet <NUM> has the south pole oriented towards the face of the latch case, the lock magnet <NUM> will have the south pole oriented towards the outside of the lock. On the other hand, if the magnet of the latch device <NUM> has the north pole oriented towards the frame fixing plate, then the magnet of the lock <NUM> will also have the north pole oriented towards the front of the lock. This repulsion will promote the movement of the latch, causing it to move from the retracted position to the protruding position.

In an embodiment, <FIG> represents the latch <NUM> in the various positions, from the protruding to the retracted position. <FIG> shows the latch <NUM> in the protruding position and the respective force caused by the latch center of mass <NUM> at the moment wherein the lock with clamp B moves away and there are no longer magnetic forces acting on the latch <NUM>. The position of the latch center of mass <NUM> is located in such a way as to cause a moment in latch <NUM> that causes latch <NUM> to rotate in relation to axle <NUM>, moving latch <NUM> to the retracted position, when no other force is exerted on latch <NUM>, the use of springs or magnets being unnecessary for this function. <FIG> shows the moment caused in latch <NUM>, starting its movement to the retracted position. In <FIG>, the latch <NUM> is shown in the retracted position and the respective force caused by the center of mass of the latch <NUM>.

In an embodiment, <FIG> represents the lock with clamp installed on a door. In a preferred embodiment, the clamp <NUM> comprises a fork, which allows an offset and respective decrease in the precision necessary for installing the actuation system. The front of the lock <NUM> presents a geometry that allows the entry of the latch <NUM>, even with misalignments in relation to the latch device A, without the need for adjustments in the door for the correct operation of the closure.

In an embodiment, <FIG> represents an embodiment of the lock alignments with actuation elements. The movement between the axle <NUM> and the clamp <NUM> is carried out by the contact between the two elements, since the axle <NUM> is inserted in the clamp <NUM>, in the area of the fork. This location allows the lock with clamp B and actuators C and D to be attached together without the need for fixing elements.

In an embodiment, <FIG> represents a top view of an embodiment of the closure, where the clamp <NUM> has a reduced thickness of, preferably, <NUM>, which allows the use of handles with a greater depth in relation to conventional lock systems.

The term "comprises" or "comprising" whenever used herein is intended to indicate the presence of the features, elements, integers, steps and components mentioned, but does not preclude the presence or addition of one or more other features, elements, integers, steps and components, or groups thereof.

Claim 1:
Closure for sliding door or window comprising a lock with clamp (B) for closure of the sliding door or window on a latch and a latch device (A) for closure of the sliding door or window in said lock with clamp (B), wherein the latch device comprises a latch (<NUM>) and a latch case (<NUM>) with said latch (<NUM>) on one face of said case, wherein the latch (<NUM>) pivots between a retracted position in the latch case (<NUM>) and a protruding position from the latch case (<NUM>);
wherein the pivoting latch (<NUM>) comprises a magnet (<NUM>) arranged in the latch (<NUM>) with a first magnetic pole oriented outwardly on said face to create a magnetic repulsive force with a second magnetic pole, having the same polarity as the first pole and oriented opposite to the first magnetic pole, from another magnet (<NUM>) placed in the lock so that the latch (<NUM>) pivots from the retracted position to a protruding position to be locked by the clamp (<NUM>) on approaching said lock; and
wherein the lock with clamp (B) comprises a lock case (<NUM>) for receiving said latch (<NUM>) on one face of said case, and comprises the other magnet (<NUM>) arranged in the lock with a first magnetic pole oriented outwardly on said face to create the magnetic repulsive force with a second magnetic pole, having the same polarity as the first pole and oriented opposite to the first magnetic pole, from the magnet (<NUM>) placed on said latch (<NUM>) so that the latch pivots from the retracted position to a protruding position to be locked by the clamp (<NUM>) on approaching said lock.