EP4283080A1

EP4283080A1 - Device for the magnetic closure of leaves

Info

Publication number: EP4283080A1
Application number: EP23174553.0A
Authority: EP
Inventors: Enrico SARASI
Original assignee: Laesse Srl
Current assignee: Laesse Srl
Priority date: 2022-05-27
Filing date: 2023-05-22
Publication date: 2023-11-29
Also published as: IT202200011168A1

Abstract

A device for the magnetic closure of leaves (10, 100, 300), which comprises two profiled elements (11, 210, 310, 410), at least one of which is composed of:- a main profile (12, 212, 312),- the main profile (12, 212, 312) having a slot (16, 216, 316),- a secondary profile (18, 218, 318) which comprises at least one magnetic closure element (19, 219, 319),- the secondary profile (18, 218, 318) being accommodated inside the slot (16, 216, 316), at least one magnetic return element (20, 220, 320) being associated with the main profile (12, 212, 312).

Description

The present invention relates to a device for the magnetic closure of leaves.
Nowadays closure devices are commonly used for example for doors and windows, leaves, casements and the like, for a more or less hermetic seal and isolation for example from gas, water and/or noise, according to the application and/or the operating conditions.
One known solution is composed of two profiled elements, which achieve the closure by mutual attraction if they are brought close together.
Such profiled elements have a predominantly longitudinal extension and comprise a main profile (or supporting profile), in which a secondary profile is usually accommodated.
Such main profile is commonly composed of an extruded profile with a C-shaped cross-section, usually made of plastic material, metallic material, aluminum or PVC.
The secondary profile usually has a T-shaped cross-section, and is composed of a core and a wing, with the main axis of the core directed toward the opening of the main profile.
Such secondary profile is for example provided using an extruded profile of plasto-ferrite, optionally covered in plastic material.
It can also have one magnetized side, usually the side directed toward the opening of the main profile.
Alternatively, the secondary profile can have an H-shaped cross-section.
Such secondary profile can be moved inside the main profile, in the direction transverse to its predominant extension, partially exiting from the opening in order to be brought closer to the corresponding mirror-symmetrical profile.
Commonly, the magnetic closure occurs using one or more magnetic elements, for example embedded in the outer ends of the cores of the secondary profiles. Such secondary profiles undergo mutual attraction when they are brought together.
To this end the magnetic elements of the two mutually opposite profiles usually have mirror-symmetrical magnetic poles.
Such magnetic elements can be made with various geometries and for example they can constitute the secondary profile.
A variation of a closure device is for example constituted by two profiled elements that are shaped complementarily and hinged. The closure is normally effected by a sealing element inserted between the two profiled elements, which is constituted for example by a gasket. In order to ensure seal and efficacy, such sealing element must be kept in constant adherence to the profile.
The main drawback of conventional closure devices is linked to the uncertainty of position of the magnetic secondary profile, which does not ensure optimal closure in every operating condition. One example is the case where the secondary profile has an axis of movement in the vertical direction and it can therefore be moved subject to its weight, which conditions the attempt at closure.
Furthermore, the uncertainty of position of the secondary profile is a cause of aesthetic defects owing to the partial egress of the profile from its seat when the leaves are open. The longer the profiles, the more evident is this defect.
An additional drawback is the constant contact between the sealing element and the profile, which causes friction, wear and noise. Wear of the sealing element can also result in a decrease of the seal over time.
What is more, the bulk associated with the sealing element presents an aesthetic defect or results in an increase in the dimensions of the load-bearing profiles.
The aim of the present invention is to provide a device for the magnetic closure of leaves that resolves or substantially reduces the problems of the conventional devices.
Within this aim an object of the invention is to provide a device for the magnetic closure of leaves that improves the reliability of the closure mechanism.
Another object of the invention is to reduce or remove the uncertainty of position of the secondary profile, so improving the performance of the closure device.
Another object of the invention is to provide a device for the magnetic closure of leaves that improves adhesion in the closed position.
Another object of the invention is to provide devices for the magnetic closure of leaves with reduced friction, or in any case friction not higher than in similar conventional devices.
Another object of the invention is to reduce noise, the wear of rubbing parts, and the force applied on the leaf during opening and closure.
Another object of the invention is to reduce the visual impact of the magnetic closure device.
This aim and these and other objects which will become more evident hereinafter are achieved by a device for the magnetic closure of leaves that comprises two profiled elements, at least one of which is composed of:

a main profile,
said main profile having a slot,
a secondary profile which comprises at least one magnetic closure element,
said secondary profile being accommodated inside said slot,

Further characteristics and advantages of the invention will become more apparent from the detailed description that follows of a preferred, but not exclusive, embodiment of the device for the magnetic closure of leaves, according to the invention, which is illustrated by way of non-limiting example in the accompanying drawings wherein:

Figure 1 is a cross-sectional view of a first embodiment of a device for the magnetic closure of leaves according to the invention;
Figure 2 shows a second embodiment of a device for the magnetic closure of leaves;
Figure 3 shows a third embodiment of a device for the magnetic closure of leaves, with a deformable element;
Figures 4a, 4b, 4c and 4d show four embodiments of a device for the magnetic closure of leaves, with hinged profiled elements;
Figures 5a, 5b, 5c and 5d show four variations of embodiment of the configuration of the magnetic elements of the closure system.

With reference to the figures, a device for the magnetic closure of leaves, according to the invention, is generally designated with the reference numeral 10.
Such structure comprises two mutually juxtaposed profiled elements 11, at least one of which is composed of:

a main profile 12,
such main profile 12 has a slot 16;
a secondary profile 18 which comprises at least one magnetic closure element 19;
such secondary profile 18 is accommodated inside the slot 16.

The device 10 for the magnetic closure of leaves is characterized in that a magnetic return element 20 is present, which is associated with the main profile 12.
Such main profile 12 has a substantially C-shaped cross-section, and is constituted by a core 13, two wings 14 and two tabs 15.
The main profile 12 is for example made of plastic material, metallic material, aluminum or PVC.
Each profiled element 11 has a predominantly longitudinal extension.
Such slot 16 has a cross-section that is substantially quadrangular, preferably rectangular, and has an opening 17.
Advantageously, the magnetic return element 20 is located in a position opposite from the opening 17.
The magnetic closure element 19 of the profiled element 11 has a polarity that is opposite to that of the magnetic closure element 19 of the mirror-symmetrical profiled element 11.
The secondary profile 18 has for example a T-shaped cross-section and is predominantly inserted in the slot 16 of the main profile 12. The core of the secondary profile 18 has play with respect to the opening 17.
A variation of embodiment of the device, according to the invention, has a secondary profile 18 with an H-shaped cross-section.
The secondary profile 18 is for example provided using an extruded profile of plasto-ferrite, covered in plastic material.
The magnetic closure element 19 is for example an extruded profile of plasto-ferrite.
In the present description and in the appended claims, "plasto-ferrite" means the material called plasto-ferrite, subsequently magnetized.
The magnetic return element 20 is alternatively made of magnetic material or material that reacts to an external magnetic field. For example, it is provided using a profile of plasto-ferrite, or a profile of ferromagnetic material.
Advantageously, such magnetic closure element 19 induces a magnetic field in the magnetic return element 20 when it is sufficiently close.
Such magnetic return element 20 has for example a magnetic polarity that is opposite to that of the magnetic closure element 19.
In a variation of embodiment according to the invention, not shown in the figures, the secondary profile 18 is constituted by the magnetic closure element 19, for example provided using an extruded profile of magnetic material.
A second variation of embodiment 100 of a device for the magnetic closure of leaves consists of two mutually opposite profiled elements 110 and 210, for example with a predominantly longitudinal extension.
A first profiled element 210 is for example similar to the profiled element 11 of the previous variation of embodiment 10, while a second profiled element 110 is composed of a closed main profile 112, in which there is a slot 116.
The elements of the profiled element 210 are designated by the same reference numerals, increased by 200, as the corresponding elements of the profiled element 11 of the first embodiment 10.
Advantageously, a magnetic closure element 119 is inserted in the slot 116. Such magnetic closure element 119 has a polarity that is opposite to that of the magnetic closure element 219.
Such magnetic closure element 119 is for example a profile of plasto-ferrite, or a profile of ferromagnetic material, which is reactive to a magnetic field.
The closed main profile 112 has for example a cross-section that is substantially quadrangular, preferably rectangular, and has a predominantly longitudinal extension.
The closed main profile 112 is for example made of plastic material, metallic or ferromagnetic material, aluminum or PVC.
A third variation of embodiment 300 of a device for the magnetic closure of leaves consists of two profiled elements 310 and 410, for example with a predominantly longitudinal extension.
A first profiled element 310 is for example similar to the profiled element 11 of the first variation of embodiment 10. The elements of the profiled element 310 are designated by the same reference numerals, increased by 300, as the corresponding elements of the profiled element 11 of the first embodiment 10.
The profiled element 410 is constituted by a rigid main profile 411 to which a deformable element 412 is connected.
Such rigid main profile 411 is for example made of plastic or metallic material and has a substantially C-shaped cross-section.
The deformable element 412 is composed in turn of two deformable elements 420a and 420b, for example semicircular in shape.
Such deformable elements 420a,b are for example made using coextruded plastic material.
Advantageously, a magnetic closure element 419 is fitted in the deformable element 412, directed toward the magnetic element 319 of the opposite profiled element 310.
Such magnetic closure element 419 is for example made using extruded plasto-ferrite and has a polarity that is opposite to that of the magnetic closure element 319 of the profiled element 310.
A fourth variation of embodiment 500a of a device for the magnetic closure of leaves is constituted by two profiled elements 510a and 510b.
Such profiled elements are for example hinged and shaped complementarily and have a predominantly longitudinal extension.
For example, a first profiled element 510a is convex, while a second profiled element 510b is concave.
Such profiled elements 510a,b are each made up of a main profile, respectively 511a and 511b, with a substantially tubular quadrangular cross-section, and a predominantly longitudinal extension.
Each profiled element 510a,b has an opening, respectively 517a and 517b.
In each profiled element 510a,b there is a secondary profile 512a and 512b which comprises a magnetic closure element, respectively 513a and 513b.
A variation of embodiment of the device, according to the invention, comprises a secondary profile 512a,b which is constituted by the magnetic closure element 513a,b.
In each profile, there is also a magnetic return element 515a and 515b.
The magnetic closure element 513a has for example a polarity that is opposite to those of the magnetic closure element 513b of the opposite profile, and of the adjacent magnetic return element 515a.
The polarities of the magnetic closure elements 513a,b and of the magnetic return element 515b are similarly configured.
The magnetic closure elements 513a,b are for example made using extruded plasto-ferrite.
The magnetic return elements 515a,b are for example made alternatively using extruded plasto-ferrite, or using extruded ferromagnetic material reactive to external magnetic fields.
Each main profile 511a,b can also have a seat for a hinge-like coupling, not shown in the figures.
Such main profiles 511a,b are for example made using extruded plastic or metallic material.
A load-bearing element 516a, for example a glass profile, is fitted in the main profile 511a of the first profiled element 510a.
A fifth variation of embodiment 500b is composed of two profiled elements 520a and 520b which are hinged and shaped complementarily, respectively convex and concave, for example with a predominantly longitudinal extension.
The profiled element 520b is similar to the profiled element 510b and is designated by the same reference numerals, increased by 10, as the corresponding elements of the profiled element 510b of the previous variation of embodiment 500a.
The profiled element 520a has a main profile 521a, with a substantially tubular quadrangular cross-section, in which a magnetic closure element 523a is accommodated.
Such magnetic closure element 523a has a substantially quadrangular cross-section and is for example made using extruded plasto-ferrite or extruded ferromagnetic material.
Such magnetic closure element 523a has a polarity that is opposite to that of the magnetic closure element 523b of the opposite profiled element 520b.
Such main profile 521a of the first profiled element 520a has a load-bearing element 526a, for example a glass profile.
Inside the main profile 521a, for example made of plastic or metallic material, there can also be an accommodation for the hinge, not shown in the figures.
A sixth variation of embodiment 500c consists of two profiled elements 530a and 530b which are hinged and shaped complementarily, respectively convex and concave, for example with a predominantly longitudinal extension.
The profiled element 530a is substantially similar to the profiled element 510a and is designated by the same reference numerals, increased by 20, as the corresponding elements of the profiled element 510a of the previous variation 500a.
The profiled element 530b is substantially similar to the profiled element 510b, with the addition of a load-bearing element 536b, for example a glass profile.
The profiled element 530b is designated by the same reference numerals, increased by 20, as the corresponding elements of the profiled element S 10b of the previous variation 500a.
A seventh variation of embodiment 500d consists of two profiled elements 540a and 540b which are hinged and shaped complementarily, respectively convex and concave, for example with a predominantly longitudinal extension.
The profiled element 540a is substantially similar to the profiled element 520a and is designated by the same reference numerals, increased by 20, as the corresponding elements of the profiled element 520a of the previous embodiment 500a.
The profiled element 540b is substantially similar to the profiled element 530b and is designated by the same reference numerals, increased by 10, as the corresponding elements of the profiled element 530b of the previous embodiment 500c.
A first variation of embodiment, with a bipolar configuration 600 of magnetic elements of the closure system, consists of two partitions, 610a and 610b.
Each partition 610a,b includes two polarities, respectively 611a and 612a, 611b and 612b, and is for example a portion of the transverse cross-section of a magnetic closure element 19, 119, 219, 319, 419, 513a,b, 523a,b, 533a,b, 543a,b or of a magnetic return element 20, 220, 320, 515a,b, 525b, 535a,b, 545b.
Such polarities, respectively 611a,b, 612a,b, are arranged at the two ends of the main direction of the respective partition 610a,b.
The polarities 611a and 612a of the first partition 610a are mutually different and opposite to the corresponding polarities 611b and 612b of the facing partition 610b.
A second variation of embodiment, with a tripolar configuration 620 of magnetic elements of the closure system, consists of two partitions, 621a and 621b.
Each partition 621a,b includes three polarities, respectively 622a, 623a, 624a and 622b, 623b, 624b, and is for example a portion of the transverse cross-section of a magnetic closure element 19, 119, 219, 319, 419, 513a,b, 523a,b, 533a,b, 543a,b or of a magnetic return element 20, 220, 320, 515a,b, 525b, 535a,b, 545b.
Such polarities, respectively 622a,b, 623a,b, 624a,b, are arranged at the two ends of the main direction of the respective partition 621a,b and at the center thereof.
The polarities 622a, 623a, 624a of the partition 621a are alternated and opposite to the corresponding polarities 622b, 623b, 624b of the facing partition 621b.
A third variation of embodiment, with an axial configuration 630 of magnetic elements of the closure system, consists of two partitions, 631a and 631b.
Each partition 631a,b has two polarities, respectively 632a and 633a, 632b and 633b, and is for example a portion of the transverse cross-section of a magnetic closure element 19, 119, 219, 319, 419, 513a,b, 523a,b, 533a,b, 543a,b or of a magnetic return element 20, 220, 320, 515a,b, 525b, 535a,b, 545b.
Each one of such external polarities 632a,b is adjacent to the respective surface 635a, 635b of the respective partition 631a,b, directed in the opposite direction to the facing partition.
Each one of the internal polarities 633a,b is adjacent to the respective internal surface 634a and 634b of the respective partition 631a,b, directed toward the facing partition.
The polarities 632a and 633a of the partition 631a are alternated and opposite to the corresponding polarities 632b and 633b of the partition 631b, so that the polarities 633b are opposite to the polarity 633a.
A fourth variation of embodiment, with a reversible configuration 640 of magnetic elements of the closure system, consists of two upper partitions 641a and 641b and two lower partitions 644a and 644b.
Each partition 641a,b and 644a,b has two polarities, respectively 642a and 643a, 642b and 643b, 645a and 646a, 645b and 646b.
Each partition is for example a portion of the transverse cross-section of a magnetic closure element 19, 119, 219, 319, 419, 513a,b, 523a,b, 533a,b, 543a,b or of a magnetic return element 20, 220, 320, 515a,b, 525b, 535a,b, 545b.
The upper partitions 641a,b correspond to a transverse cross-section of a first longitudinal half, for example upper, of the magnetic element shown, while the lower partitions 644a,b correspond to a cross-section of the second longitudinal half, for example lower, of the same magnetic element.
The upper partition 641a will for example be a cross-section of the first longitudinal half of a magnetic closure element 19, while the lower partition 644a will correspond to a cross-section of the second longitudinal half of the same magnetic closure element 19.
Such polarities, respectively 642a,b and 643a,b, 645a,b and 646a,b, are arranged at the two ends of the main direction of the respective partition 641a,b and 644a,b.
The polarities 642a and 643a of the first, upper partition 641a are mutually different, and opposite to the corresponding polarities 642b and 643b of the facing partition 641b.
The polarities of the lower partitions 644a,b will have a mirror-symmetrical configuration with respect to the upper partitions 641a,b.
Some variations of embodiment, not shown in the figures, have at least three variations of polarity in the longitudinal and/or transverse direction of the magnetic element.
In practice it has been found that the invention has achieved the intended aim and objects.
In particular, with the invention a device for the magnetic closure of leaves has been provided that improves the reliability of the closure mechanism, by substantially reducing the uncertainty of position of the secondary profile.
Furthermore, the invention substantially decreases the friction of the movable parts, so reducing or not increasing the noise produced, the wear of the components, and the force necessary to close or open the leaves.
What is more, the invention substantially improves the adhesion and the seal of the leaves in the position of closure.
In addition, the invention substantially reduces the visual impact of the device for the magnetic closure of leaves, so improving its appearance.
The present invention is susceptible of numerous modifications and variations, all of which are within the scope of the appended claims. Moreover, all the details may be substituted by other, technically equivalent elements.
The components and the materials employed, provided they are compatible with the specific use, and the contingent dimensions and shapes, may be any according to requirements and to the state of the art.
The disclosures in Italian Patent Application No. 102022000011168 from which this application claims priority are incorporated herein by reference.
Where technical features mentioned in any claim are followed by reference signs, those reference signs have been included for the sole purpose of increasing the intelligibility of the claims and accordingly, such reference signs do not have any limiting effect on the interpretation of each element identified by way of example by such reference signs.

Claims

A device (10, 100, 300, 500a, 500b, 500c, 500d) for the magnetic closure of leaves , which comprises two profiled elements (11, 210, 310, 410), at least one of which is composed of:
- a main profile (12, 212, 312),

- said main profile (12, 212, 312) having a slot (16, 216, 316),

- a secondary profile (18, 218, 318) which comprises at least one magnetic closure element (19, 219, 319),

- said secondary profile (18, 218, 318) being accommodated inside said slot (16, 216, 316),
said device for the magnetic closure of leaves being characterized in that there is at least one magnetic return element (20, 220, 320) which is associated with said main profile (12, 212, 312).
The device (10, 100, 300) for the magnetic closure of leaves according to claim 1, characterized in that at least one of said main profiles (12, 212, 312) has a substantially C-shaped cross-section and is constituted by a core (13, 213, 313), two wings (14, 214, 314) and two tabs (15, 215, 315).
The device (10, 100, 300) for the magnetic closure of leaves according to claim 1, characterized in that said slot (16, 216, 316) has a substantially quadrangular cross-section and has at least one opening (17, 217, 317).
The device (10, 100, 300) for the magnetic closure of leaves according to claim 1, characterized in that said at least one magnetic return element (20, 220, 320) has a magnetic polarity that is the opposite to that of said at least one magnetic closure element (19, 219, 319) and/or has no polarization and is provided by means of a profile made of magnetic and/or ferromagnetic material.
The device (10, 100, 300) for the magnetic closure of leaves according to claim 1, characterized in that said magnetic closure element (19) is embedded in said secondary profile (18).
The device (10, 100, 300) for the magnetic closure of leaves according to claim 1, characterized in that said secondary profile (18) is constituted by said magnetic closure element (19).
The device (10, 100, 300) for the magnetic closure of leaves according to claim 3, characterized in that said at least one magnetic return element (20, 220, 320) is located in a position opposite with respect to said at least one opening (17, 217, 317).
The device (10, 100, 300) for the magnetic closure of leaves according to one or more of the preceding claims, characterized in that said at least one secondary profile (18, 218, 318) has a T-shaped and/or H-shaped cross-section, is predominantly inserted in said slot (16, 216, 316) and has play between the core of said secondary profile (18, 318) and said at least one opening (17, 217, 317).
The device (10, 100, 300) for the magnetic closure of leaves according to claim 1, characterized in that said profiled elements (11, 210, 310, 410) have a predominantly longitudinal extension.
The device (100) for the magnetic closure of leaves according to one or more of the preceding claims, characterized in that at least one profiled element (110) has a closed main profile (112), said closed main profile (112) having a slot (116), at least one magnetic closure element (119) being arranged inside said slot (116).
The device (100) for the magnetic closure of leaves according to one or more of the preceding claims, characterized in that said closed main profile (112), said secondary profile (118) and said slot (116) have a substantially quadrangular cross-section and a predominantly longitudinal extension.
The device (100) for the magnetic closure of leaves according to one or more of the preceding claims, characterized in that said at least one magnetic closure element (119) has a magnetic polarity that is opposite with respect to that of said at least one magnetic closure element (219) of said facing profiled element (210).
The device (300) for the magnetic closure of leaves according to one or more of the preceding claims, characterized in that at least one profiled element (410) is constituted by a rigid main profile (411) and at least one deformable element (412) which is connected to said rigid main profile (411).
The device (300) for the magnetic closure of leaves according to one or more of the preceding claims, characterized in that at least one magnetic closure element (419) is engaged in said at least one deformable element (412).
The device (500a, 500b, 500c, 500d) for the magnetic closure of leaves according to one or more of the preceding claims, characterized in that it is constituted by two profiled elements (510a, 510b, 520a, 520b, 530a, 530b, 540a, 540b) which are hinged and shaped complementarily, at least one of said profiled elements (510a, 510b, 520b, 530a, 530b, 540b) having at least one magnetic return element (515a, 515b, 525b, 535a, 535b, 545b).
The device (500a, 500b, 500c, 500d) for the magnetic closure of leaves according to one or more of the preceding claims, characterized in that at least one of said profiled elements (510a, 510b, 520a, 520b, 530a, 530b, 540a, 540b) has at least one magnetic closure element (513a, 513b, 523a, 523b, 533a, 533b, 543a, 543b).
The device (500a, 500b, 500c, 500d) for the magnetic closure of leaves according to one or more of the preceding claims, characterized in that said at least one magnetic return element (515a, 515b, 525b, 535a, 535b, 545b) has a polarity that is opposite with respect to said at least one adjacent magnetic closure element (513a, 513b, 523b, 533a, 533b, 543b).
The device (500a, 500b, 500c, 500d) for the magnetic closure of leaves according to one or more of the preceding claims, characterized in that at least one of said profiled elements (510a, 510b, 520b, 530a, 530b, 540b) has at least one opening (517a, 517b, 527b, 537a, 537b, 547b).
The device (500a, 500b, 500c, 500d) for the magnetic closure of leaves according to one or more of the preceding claims, characterized in that said profiled elements (510a, 510b, 520a, 520b, 530a, 530b, 540a, 540b) are composed each of a main profile (511a, 511b, 521a, 521b, 531a, 531b, 541a, 541b), said main profile (511a, 511b, 521a, 521b, 531a, 531b, 541a, 541b) having a substantially tubular quadrangular cross-section.
The device (500a, 500b, 500c, 500d) for the magnetic closure of leaves according to one or more of the preceding claims, characterized in that at least one of said profiled elements (510a, 520a, 530a, 530b, 540a, 540b) has at least one load-bearing element (516a, 526a, 536a, 536b, 546a, 546b).
The device (500a, 500b, 500c, 500d) for the magnetic closure of leaves according to one or more of the preceding claims, characterized in that there is a bipolar configuration (600) of at least one of said magnetic closure elements (19, 119, 219, 319, 419, 513a, 513b, 523a, 523b, 533a, 533b, 543a, 543b) and/or of said magnetic return elements (20, 220, 320, 515a, 515b, 525b, 535a, 535b, 545b), said bipolar configuration (600) consisting of two partitions (610a, 610b), each one of said partitions (610a, 610b) including two polarities (611a, 611b, 612a, 612b), said partitions (610a, 610b) being a portion of the transverse cross-section of said at least one magnetic closure element (19, 119, 219, 319, 419, 513a, 513b, 523a, 523b, 533a, 533b, 543a, 543b) or of said at least one magnetic return element (20, 220, 320, 515a, 515b, 525b, 535a, 535b, 545b), said polarities (611a, 611b, 612a, 612b) being arranged at the two ends of the main direction of said respective partition (610a, 610b), said polarities (611a, 612a) of said partition (610a) being mutually different and opposite to said corresponding polarities (611b, 612b) of said facing partition (610b).
The device (10, 100, 300, 500a, 500b, 500c, 500d) for the magnetic closure of leaves according to one or more of the preceding claims, characterized in that there is a tripolar configuration (620) of at least one of said magnetic closure elements (19, 119, 219, 319, 419, 513a, 513b, 523a, 523b, 533a, 533b, 543a, 543b) and/or of said magnetic return elements (20, 220, 320, 515a, 515b, 525b, 535a, 535b, 545b), said tripolar configuration (620) consisting of two partitions (621a, 621b), said partitions (621a, 621b) each having three polarities (622a, 622b, 623a, 623b, 624a, 624b), said partitions (621a, 621b) being a portion of the transverse cross-section of said at least one magnetic closure element (19, 119, 219, 319, 419, 513a, 513b, 523a, 523b, 533a, 533b, 543a, 543b) or of said at least one magnetic return element (20, 220, 320, 515a, 515b, 525b, 535a, 535b, 545b), said polarities (622a, 622b, 623a, 623b, 624a, 624b) being arranged at the two ends of the main direction and at the center of said respective partition (621a, 621b), each one of said polarities (622a, 622b, 623a, 623b, 624a, 624b) of said partition (621a) being alternated and opposite with respect to said corresponding polarities (622b, 623b, 624b) of said facing partition (621b).
The device (10, 100, 300, 500a, 500b, 500c, 500d) for the magnetic closure of leaves according to one or more of the preceding claims, characterized in that there is an axial configuration (630) of at least one of said magnetic closure elements (19, 119, 219, 319, 419, 513a, 513b, 523a, 523b, 533a, 533b, 543a, 543b) and/or of said magnetic return elements (20, 220, 320, 515a, 515b, 525b, 535a, 535b, 545b), said axial configuration (630) consisting of two partitions (631a, 631b), said partitions (631a, 631b) each having two polarities (632a, 632b, 633a, 633b), said partitions (631a, 631b) being a portion of the transverse cross-section of said at least one magnetic closure element (19, 119, 219, 319, 419, 513a, 513b, 523a, 523b, 533a, 533b, 543a, 543b) or of said at least one magnetic return element (20, 220, 320, 515a, 515b, 525b, 535a, 535b, 545b), said external polarities (632a, 632b) being each adjacent to the respective surface (635a, 635b) of said respective partition (631a, 631b) which is directed in an opposite direction with respect to said facing partition (631a, 631b), said internal polarities (633a, 633b) being each adjacent to the respective internal surface (634a, 634b) of said respective partition (631a, 631b) which is directed toward said facing partition (631a, 631b), said polarities (632a, 633a) of said partition (631a) being alternated and opposite with respect to said corresponding polarities (632b, 633b) of said partition (631b).
The device (10, 100, 300, 500a, 500b, 500c, 500d) for the magnetic closure of leaves according to one or more of the preceding claims, characterized in that there is a reversible configuration (640) of at least one of said magnetic closure elements (19, 119, 219, 319, 419, 513a, 513b, 523a, 523b, 533a, 533b, 543a, 543b) and/or of said magnetic return elements (20, 220, 320, 515a, 515b, 525b, 535a, 535b, 545b), said reversible configuration (640) consisting of at least two upper partitions (641a, 641b) and at least two lower partitions (644a, 644b), each one of said partitions (641a, 641b, 644a, 644b) having two polarities (642a, 642b, 643a, 643b, 645a, 645b, 646a, 646b), each one of said partitions being a portion of the transverse cross-section of said at least one magnetic closure element (19, 119, 219, 319, 419, 513a, 513b, 523a, 523b, 533a, 533b, 543a, 543b), or of said at least one magnetic return element (20, 220, 320, 515a, 515b, 525b, 535a, 535b, 545b), said upper partitions (641a, 641b) corresponding to a transverse cross-section of a first longitudinal half of said represented magnetic element, said lower partitions (644a, 644b) corresponding to a cross-section of the second longitudinal half of said same magnetic element, said polarities (642a, 642b, 643a, 643b, 645a, 645b, 646a, 646b) being arranged at the two ends of the main direction of said respective partition (641a, 641b, 644a, 644b), said polarities (642a, 643a) of said upper partition (641a) being mutually different and opposite with respect to said corresponding polarities (642b, 643b) of said facing partition (641b), said polarities (645a, 645b, 646a, 646b) of said lower partitions (644a, 644b) having a mirror-symmetrical configuration with respect to said polarities (642b, 643b) of said upper partitions (641a, 641b).