DE202019001416U1 - Extended magnetic door (end) locking system - Google Patents

Abstract

Magnetic door closer (3), comprising at least two permanent magnet-counterpart pairs (3a, 3c) for mounting on a frame (2) and a door leaf (1) rotatably associated therewith, wherein
(a) the counterparts (3c) consist of ferromagnetic or permanent magnetic material,
(b) the permanent magnet-counterpart pairs (3a, 3c) can be positioned directly or indirectly with their one part (3a or 3c) on the frame (2) and their respective other part on the door leaf (1) and
(c) at least one permanent magnet (3a) or counterpart (3c) can be positioned directly or indirectly in the area of one of the upper edges of the door leaf (1d)
(d) With the door closed, the magnets (3a) and their respective counterpart (3c) can be positioned opposite one another with the north and south poles, characterized in that at least two pairs of permanent magnet counterparts are spaced more than 10 cm apart.

Description

Types of door closers: There is a wide variety of door closers available for closing living room doors, such as (a) simple spring-loaded clip-on door closers (or backs), (b) simple door levers using gravity, (c) door closers with overhead linkage, ( d) Rod closers sliding in the middle or below on the door leaf, (e) floor closers, (f) concealed door closers with slide rail linkage, etc. In addition to the pure locking function, some, more complex door closers also have damping, free-running, end stop and other functions.
For this purpose, more complex and therefore more expensive door closers have an integrated end stop function, which ensures that the closing speed is accelerated in the range of the last few degrees and thus existing resistances are overcome by the impulse of the door and the door therefore reliably closes.
Simple spring-operated push-on door closers are known from the trade and can only close a door from a comparatively wide door angle via the impulse of the closing door leaf, which then disadvantageously closes loudly and undamped. If, on the other hand, the door is only ajar, the impulse of the door supporting the lock is missing, so the complex, as well as the simple door closers, fundamentally not, existing resistances (e.g. due to adjacent sealing profiles, resulting air pockets, pressure differences between rooms, displacement forces of the lock latch, etc.) to be overcome reliably and to move the door leaf into a closed position.

Door lifter: In addition, door lifters are also known, which e.g. because of a carpet lying in front of the door, lift by a few millimeters when opening. The lifting energy obtained in this way has a side effect that, once released, a door leaf falls into a closing, slow-turning, low-torque rotary movement compared to door closers. The door leaf then leans either with its lock latch on the striking plate or only slightly against the sealing profile, so that the vertical door rebate on the lock side of the door leaf e.g. Remains 1 to 15cm from the frame. The door panels, which are so slightly ajar, therefore allow air to move between the rooms and drafts, which means that the temperatures equalize, smells and noise spread and, in the event of a fire, a fire quickly spreads over the entire building.

Contact-locking, magnetic locking devices (magnetic catch): Two-part locking devices also known as "magnetic catches" are known from the prior art. Magnetic catches are magnetic holding systems that are used to lock door leaves of various types, e.g. Flaps, lids, caravan doors, etc., are technically designed. They usually have a "sandwich construction" (permanent magnet plate between two flat iron poles) with flat and smooth adhesive and pole surfaces, which rest when the door is closed on their simple flat iron counterpart and are thus short-circuited. The pole faces concentrate the magnetic field in the vicinity at the narrow, protruding pole faces. If the counterpart is in the vicinity of the pole faces or is even in contact with the pole faces, the concentration of the magnetic field, e.g. 18 times higher adhesive force compared to an open magnetic core. If the counterpart is outside the vicinity of the pole faces, the magnetic field is all the less.

Magnetic catches are thus optimized for their adhesive or holding effect, but technically they are not suitable for pulling the spacing between the magnet and counterpart, which is caused, among other things, by the lock latch and seals (hereinafter referred to as the sealing profile) (hereinafter referred to as the “final closing function”).

Contactless, magnetic locking devices: From publication DE 20 2017 100 143 U1 Locking devices for interior doors are now known which - unlike magnetic catches - hold the door in the closed position without contact. Magnetic locking devices are expediently designed to maximize their locking force, but are not designed technically, and are not suitable for providing a final closing function for ajar and therefore slightly opened door leaves:
They are characterized by the fact that - in contrast to closing devices - they are expediently installed as far away from the axis of rotation as possible in order to optimize their function. The more distant they are from the axis of rotation of the door leaf, the stronger the torque transmitted magnetically to the door leaf and thus the locking forces acting on the door handle. At the in DE 20 2017 100 143 U1 proposed solution is a magnet arrangement in the
Door frame and a counterpart attached to the opposite point on the door leaf when the door is closed. As with the magnetic catches, the magnet arrangement is basically designed in such a way that the resulting magnetic field concentrates on the vicinity of the magnetic poles, i.e. a short range of a magnetic field concentrated for this is formed. Outside of the vicinity of the magnetic poles, the density of the magnetic field lines is all the less for this. If the counterpart is then in the immediate vicinity of the concentrated magnetic field, the concentrated field lines run through the counterpart to the magnet arrangement and high holding forces are established. Is the counterpart, however, outside the vicinity of the magnetic field, i.e. the door leaf is not in the closed position, but rather, for example, leaned against the sealing profile and therefore the latch bolt is only a little, e.g. 2 cm, from the striking plate, the closing forces are too low to close the door leaf in a closed position pull.
In addition, is from pamphlet DE 30 41 572 A1 a solution is known, by means of which thin and light doors with low torsional rigidity are to be held in a closed position by means of permanent magnets which are offset with respect to one another, arranged over the entire vertical edge of the door rebate of the door leaf and the entire vertical edge of the door frame and are optionally recessed in the sealing profile groove. While the locking device, which is misleadingly referred to as the "door closer", advantageously holds the doors in the closed position, it prevents a door closure from a leaned position - since the same poles face each other in the leaned position - (that is, a closing based on the sealing profiles and / or on the lock latch, e.g. 1 ° open door leaf in a closed, i.e. 0 ° open door leaf position).
For the reasons stated above, magnetic locking devices are generally not suitable for reliably closing a door leaf from a leaned position.

Door closers: A special case are door closers that only act at the end of a door closing process in the area of the last few degrees and reliably overcome existing resistance when a door that is only slightly opened is closed, but have no intervention at all other opening angles. Such closing devices, which are also called "door latch" or "door check" in English, for example DE 20 2010 005 948 U1 or DE 200 037 56 U1 are known in the following as "door closers".
A major advantage of door closers is that they only release closing energy during the last few degrees of intervention at the end of a closing process and, conversely, absorb closing energy at the beginning of an opening process. Doors equipped with door closers therefore only generate resistance at the beginning of the first few degrees of an opening process and can be opened wide without further resistance via the further opening degrees.
In order to close a door, doors equipped with door closers are swung in the open position by means of a thrust into the trigger of the door closer, which is usually still to be overcome, from where they are then almost always pulled into a closed position via the closing mechanism. Door closers have the disadvantage that they have to be mounted on the door frame or the door as a relatively large and, due to their complexity, also comparatively expensive, component, which is usually clearly visible.

End closing angle: The closing angle from which the automatic rotation of the door leaf starts from a rest position is called "end closing angle" in this document.
In the case of magnetic locking devices, the end closure angle is basically hardly expedient in the interest of the largest possible locking force.

Magnetic closing device: From publication DE 93 04 400 U1 a magnetic closing device is known, with which a very closely leaning door leaf (which rests with its lock latch on the striking plate) can be closed. For this purpose, an electromagnet to be provided directly on or in the area of the door lock and / or the striking plate, that is to say in a position remote from the axis of rotation, is considered and proposed according to the invention as advantageous. However, it was not recognized here that the electromagnet was positioned far away from the axis of rotation, even with very small door opening angles (often even with the in DE 93 04 400 U1 problem to be solved of a door leaning on the lock latch) is disadvantageous compared to an installation position close to the pivot axis. If the door is not leaning against its lock latch, for example, but against the sealing profile, so that there is a gap of several centimeters between the lock latch and strike plate, for example, with the in DE 93 04 400 U1 proposed solution remote from the axis of rotation, as a rule, a door closure cannot be achieved.

Problem: This innovation is based on the problem of providing a simple, inexpensive, and preferably optically barely perceptible door closer for living room door leaves in particular, the door leaf without discreet trigger resistance from the sealing profile or slightly opened, e.g. up to 25 ° angle open position always pulls reliably into a closed position.

Solution to the problem: This problem is solved by a door closer which fulfills claim 1 and a door arrangement according to claim 12.

For this purpose, it is proposed to position two pairs of permanent magnets and counterparts on the door leaf and the frame so that the magnetic field lines of the permanent magnets penetrate their counterpart and the opened door leaf via the resulting magnetic attraction forces that can be felt on the door handle in a closed position by means of the torque thus caused is pulled.

Basically, the at least two permanent magnet-counterpart pairs serve the same technical function, namely the closing of the door leaf. According to the invention, however, it has been recognized that the problem can be solved elegantly by separating the "closing function" into a door leaning function and a door end stop function using at least two pairs of permanent magnets and counterparts. The prerequisite for this is that one of the permanent magnet-counterpart pairs is positioned as close as possible to the axis of rotation and the other is clearly positioned far from the axis of rotation.

When closing a door leaf that is slightly open, e.g. 5 °, 10 °, 15 ° or even 25 °, the torque that is directed against a rotational movement and mostly results from the friction forces of the door hinges (e.g. 0.1, 0.2 Nm or 0.8 Nm) is applied overcome. When the door profile is leaned on the sealing profile or on the lock latch, e.g. with 1 ° or 3 °, there is also the much higher torque opposing a closing movement (e.g. 1 Nm, 3 Nm or - for older, poorly adjusted doors - sometimes 10 Nm) , which largely results from the crushing of the sealing profiles and the displacement of the lock latch.
The function of the pair of permanent magnets and counterparts closer to the rotary axis is to convert the door leaf into a rotary movement from the largest possible closing angle while overcoming the frictional forces of the door hinges (door leaning function).

The function of the pair of permanent magnets and counterparts positioned far from the axis of rotation, on the other hand, is to pull a leaned door leaf into the lock with a small door opening angle (door end stop function). It has no noticeable influence on the end closure angle. The pair of permanent magnets and counterparts remote from the axis of rotation must overcome the counter-directed, much higher torque resulting from the pinching of the sealing profiles and the displacement of the lock latch from a small opening angle.
The pair of permanent magnets and counterparts positioned far from the axis of rotation ( 3a , 3c ) therefore causes a door leaf to be opened by the final closing angle ( 1 ) no torque or a torque of less than 0.1 Nm.

Accordingly, the innovation comprises at least two pairs of permanent magnets and counterparts for mounting on a frame and one of the door leaves that are rotatably assigned to them. The permanent magnet-counterpart pairs each consist of at least two parts: a permanent magnet and a counterpart that is not connected to it or is connected only via magnetic active forces. The counterparts of the at least two permanent magnets are made of ferromagnetic or permanent magnetic material. At least one of the permanent magnet-counterpart pairs is positioned with one of its parts (magnet or counterpart) in the area of one of the upper edges of the door wing (e.g. less than 15 mm apart from it) and with its respective other part on the frame. The parts can e.g. fixed on or in the door leaf or frame, inserted into it or in the frame e.g. be positioned under the rebate cladding on the side of the frame on the door leaf (i.e. the part of the frame visible from the hinge side when the door is closed). The other pair of permanent magnets and counterparts is also arranged with one part on the door leaf (e.g. on the lock side of the door leaf in the area of one of the vertical, side door edges or also on the upper edge of the door leaf) and with another part on the frame - but with different spacing Axis of rotation. When the door is closed, the magnets and their respective counterparts can be positioned opposite one another with the north and south poles and preferably positioned.

When the door is closed, the magnet and counterpart of the permanent magnet / counterpart pairs are then always with their north pole on the south pole, preferably in a contactless and slightly spaced relationship. The preferably flat pole faces of the magnets and their counterparts are then approximately parallel to one another when the door is closed.
The magnet (s) and / or its / its counterparts can also be inserted or recessed in or on the door leaf and / or in the frame such that they are completely or partially invisible to the viewer. Depending on the design, dull or folded or rebated doors can be equipped with the door closer.

In addition, an optically inconspicuous integration of the door closer can be achieved by inserting at least some of the permanent magnet-counterpart pairs into the upper casing of the frame as close as possible behind the sealing profile groove or even into the “originally” groove intended for the sealing profile.

To increase the visual inconspicuity while maintaining the sealing effect, the magnet and / or the counterpart of one or more pairs of permanent magnet counterparts can alternatively be covered directly with a sealing lip or integrated into a special sealing profile. If the magnets or counterparts are also completely invisible in the door leaf, for example, behind the door veneer, the innovation is completely invisible from the outside. So the unexpected effect of the door closure looks magical.
With this innovation, it is therefore proposed that at least one magnet or a counterpart can be positioned at least partially behind or in the sealing profile groove.

In order to increase the closing torque of a door leaf in such a way that it overcomes the existing resistances from a slightly open position and falls into the lock, it initially appears to be advantageous to mount a strong permanent magnet and its counterpart far from the axis of rotation, as this increases the torque of the lever arm and thus the torque becomes.
However, while an installation remote from the rotary axis is advantageous for locking a door, it surprisingly proves to be disadvantageous for the task on which the innovation is based even at small opening angles. The reason for this is that the increasing spacing of the magnet from its counterpart when the door is opened is accompanied by an exponentially decreasing magnetic closing force. The lever arm, which advantageously increases linearly with mounting away from the rotary axis, is thus disadvantageously opposed by an exponentially falling magnetic closing force when the door leaf is open. The torque resulting from the product of the lever arm and the lever-effective magnetic closing force then forms a maximum dependent on the door opening angle as well as the distance between the door closer and the distance between the door closer and the axis of rotation when the door leaf is open (in addition to the exponentially falling magnetic force-distance characteristic).
In other words, there is a different pivot axis spacing for each door opening angle, at which the torque generated reaches a maximum value. This installation position, which is referred to in this document as the “maximum torque axis distance”, depends on the door opening angle. In the case of 0 ° - ie with the door closed - it lies on the side of the door leaf opposite the hinge; ie the side in which the door lock is also installed in the usual way. On the other hand, even with the door leaf leaning against the sealing profile, the torque-maximum rotary axis spacing may be, for example, hardly a hand span (for example, 20 cm) or even significantly less from the rotary axis.

A large end closure angle makes it easier, after passing through the door leaf, to place it reliably within the engagement area of the door end closer by means of a correctly portioned push, that is to say in a degree of door opening between the closed position and the end closure angle. Experience has shown that if the final closing angle is sufficiently large, e.g. 10 ° or 15 °, an accurate reflex quickly sets in, which always ensures a gentle and quiet closing of the door after passing through the door leaf.
In addition, a sufficiently large end closure angle also enables the innovation to be combined with a commercially available door rest, so that the pushes can be dispensed with entirely for a reliable door closure at all times, and the door end closers can be upgraded to full-fledged door closers at low cost and with an unobtrusive appearance.

As the mounting position of a pair of permanent magnets and counterparts increases in proximity to the axis of rotation, the end closure angle initially also advantageously increases and, however, the torque maximum also disadvantageously. From a certain approach to the axis of rotation, the torque is then no longer sufficient to convert a precisely adjusted door leaf into a rotary movement via the frictional resistance of the door hinges. With the smooth-running door hinges and magnets used today, there is an optimal rotary axis spacing of the magnetic force acting on the door leaf of just a few centimeters (eg 2 cm) for maximizing the end closure angle. To maximize the end closure angle, one of the permanent magnet-counterpart pairs should therefore preferably be arranged as close to the axis of rotation as possible.
In this way, at least part of one of the permanent magnet-counterpart pairs is spaced less than 1/5 of the door width from the axis of rotation.

In order to counteract a twisting of the door leaf (caused by the magnetic force applied to a permanent magnet counterpart pair advantageously positioned near the axis of rotation) and to achieve an end stop that overcomes the resistance forces, it is also advantageous to have at least one further pair of permanent magnet counterparts, for example in a 1 / 3, 1/2 2/3, 3/4 or 4/5 of the door width corresponding to the axis of rotation.
Positioned in this way, no part of the pair of permanent magnet counterparts positioned far from the rotary axis is less than 1/5 of the door width from the rotary axis ( 6 ) is spaced.

If at least two permanent magnet-counterpart pairs are arranged as described above, these are then spaced more than 10 cm apart.

Would the permanent magnets be very close together, e.g. less than 10cm, their leaning function (small torque with large door opening angle) and end stop functions (high torque with small door opening angle;) would overlap; they then represent a magnet system consisting of individual magnets with the same technical function.

In order to achieve a sufficient magnetic closing force, it is also advantageous for the magnet and / or the counterpart to be attached to a ferromagnetic carrier piece. In this way the often easily breakable permanent magnets, eg made of neodymium, are protected from damage. If the magnet and / or the counterpart is also attached with its pole faces to a ferromagnetic carrier piece, the resulting magnetic force effect of the magnet-carrier piece system is significantly increased on the pole face of the magnet opposite the carrier piece.

In addition, it is also advantageous for at least one of the permanent magnet-counterpart pairs to have an adjustment device, since by minimizing the spacing between the magnet and counterpart when the door leaf is ajar, the magnetic active forces can be significantly increased.

In order to achieve a sufficiently strong magnetic attraction force, magnets can also be provided from a system of several individual magnets and possibly carrier elements. Generally speaking, a magnet in the sense of this document can consist of a system of several individual magnets that serve the same technical function (closing the door wing). Optionally, the individual magnets can also be in contact or spaced side by side or on top of each other, so that their common magnetic field is then strengthened or spatially expanded. Such a system of individual magnets can, but need not, be connected to one another via a ferromagnetic carrier piece. If one speaks of a magnet in this document, the dimensions of the smallest cuboid, which conceptually includes all the individual magnets belonging to the system, possibly with their ferromagnetic carrier piece, may have to be used. The same applies to the "counterpart".

It is advantageous to avoid contact closure between the magnet and the counterpart of the permanent magnet-counterpart pairs in order to avoid damage to the magnet, a reduction in magnetic force as well as noise and material wear.
At least one of the magnets ( 3a) and its respective counterpart ( 3c ) are then always spaced apart.

The adhesive force between a permanent magnet and its counterpart is largely independent of contact closure or slight spacing, regardless of whether the counterpart itself is also designed as a permanent magnet (also referred to as a "magnet" in the text) or made of simple ferromagnetic material, e.g. an iron plate of the same shape, as a magnetic order is formed in the interior of the counterpart upon contact or slight spacing and the counterpart thus temporarily takes over the magnetic field generated. In the case of a magnetic locking device, the counterpart is therefore expediently usually made of ferromagnetic material of sufficient thickness without being designed as a permanent magnet itself.
If the spacing between the magnet and its counterpart, for example 10 mm, is no longer slight, the attractive forces of a magnet-magnet pairing that permanently forms a strong magnetic order are significantly stronger than that of a magnet-iron plate pairing, for example. A magnet-magnet pairing, in which the counterpart is also a permanent magnet, with a magnetic field that extends as far as possible is therefore advantageous for a closing device in order to achieve a large closing angle.

Furthermore, it is proposed to incorporate at least one, but preferably all, of the parts of the permanent magnet-counterpart pairs into a groove with a suitable adhesive or filler in a gap-filling and moisture-impermeable manner, so as to advantageously prevent oxidation caused by condensation and swelling of the groove. Alternatively or additionally, the groove can also be e.g. protected against the ingress of moisture by means of a cap. At least one magnet and / or counterpart can then be glued into a groove and / or protected against the ingress of moisture by means of a cap.

The innovation is very simple and therefore inexpensive, and surprisingly pulls-out living room interior doors that are ajar, such as e.g. 10 ° or even more degrees of angle open position advantageously tight, even without a supporting impulse across the lock latch and other resistances. In addition, the door closer opens in the first opening degrees with hardly noticeable initial resistance, is completely resistance-free across all other opening degrees and can be used for blunt and rebated doors without restricting the opening angle. If required, the door closer can also be integrated into the door leaf so that it is visually invisible.

As a result, rooms can be tempered according to individual needs, energy saved, and noise, odors and moisture locked in the closed room. By reducing unwanted drafts, a contribution to fire protection is also made.

The invention also relates to a door arrangement comprising a frame, a door leaf pivotably fastened in this frame by means of hinges having an axis of rotation, and a magnetic door closer according to FIG previous definition. To avoid repetition, reference is made to the explanations above.

• 1, die Draufsicht auf einen in eine Zarge 2 an seinem Drehpunkt 6 drehbeweglich zugeordneten Türflügel 1 mit zwei jeweils in die deckenseitige breite Türflügelseite 1b und das Futterbrett des oberen Rahmenteils 2a eingelassene Permanentmagnet-Gegenstück-Paare 3a, 3c;
• 2, die Tür aus 1 in schräger Draufsicht;
• 3 eine mögliche Ausführungsform eines aus Einzelmagneten kombinierten Magneten 3a nebst dessen Trägerstück 3b und zwei Schraubelementen
• 4 schematisch den Drehmomentverlauf in Abhängigkeit von der Drehachsbeabstandung des Türendschließers für einen um 10° Grad geöffneten Türflügel.

The invention is illustrated and explained using an embodiment. Show it:

• 1 , the top view of one in a frame 2nd at its fulcrum 6 rotatably assigned door leaf 1 with two each in the ceiling-side wide door leaf side 1b and the lining board of the upper frame part 2a embedded permanent magnet counterpart pairs 3a , 3c ;
• 2nd , the door out 1 in an oblique top view;
• 3rd a possible embodiment of a magnet combined from individual magnets 3a along with its carrier piece 3b and two screw elements
• 4th schematic of the torque curve as a function of the rotary axis spacing of the door closer for a door leaf opened by 10 °.

1 shows a top view of one in a frame 2nd at its fulcrum 6 rotatably assigned door leaf 1 with a wide door leaf in the ceiling-side 1b and the lining board of the upper frame part 2a recessed magnetic door closer 3rd . The door closer includes two permanent magnets 3a and their respective magnetic counterparts here 3c ; Both the permanent magnets 3a as well as the magnetic counterparts 3c are on one carrier piece each 3b , 3d upset. The upper frame side is shown transparently, so that the otherwise invisible, in the upper lining board of the upper frame part 2a embedded counterparts 3c and their support elements 3d are visible.
One of the permanent magnet counterpart pairs 3a , 3c is close to the axis of rotation 6 positioned; the other is about a hand's breadth from the lock side of the door 1 and thus more than 10cm from the permanent magnet counterpart pair close to the axis of rotation 3a , 3c spaced. Due to the integrated installation, the door closer is advantageously invisible to an observer.
The door is shown with an opening angle of approx. 25 ° degrees. In this position, the magnetic field lines of the pair of permanent magnets and counterparts remote from the axis of rotation do not or hardly penetrate each other, so that no noticeable torque is transmitted through them to the door leaf. The magnetic field lines of the pair of permanent magnets and counterparts close to the axis of rotation, on the other hand, penetrate each other to such an extent that a torque is generated that closes the door. In a position that is only slightly open, e.g. 2 degrees of angle, the pair of permanent magnets and counterparts remote from the axis of rotation increases the closing moment, so that the door leaf is transferred to a closed position while overcoming the resistance resulting from the crushing of the sealing profile and the displacement of the lock latch.

2nd shows 1 in an oblique top view. In this perspective, it is easy to imagine that the permanent magnet counterpart pairs ( 3a , 3c ) with rebated doors can also be designed in a variant in which the magnet 3a on the narrow side of the door leaf 1c put on and its counterpart 3c to the side of the frame on the door leaf 2 B can be attached.

3rd shows a possible embodiment of the on a support piece 3b applied magnets 3a . The magnetic closing force can be adapted to the requirements by varying the length of the pole face. The magnet 3a consists of several adjoining single magnets with the same polar direction, so that north poles adjoin north poles and south poles adjoin south poles. Together they represent a magnet system for the fulfillment of the same technical function. By positioning the magnets, the magnetic field is advantageously radiated far into the room and is not limited to the close range, for example, by counter-polar alignment.

4th schematically shows the torque curve as a function of the rotary axis spacing of the door closer for a door leaf opened by 10 °. The graphic shows that an installation position close to the axis of rotation is superior to an installation position away from the axis of rotation, for example when the door leaf is opened by 10 °. With a small door opening angle, the maximum torque axis distance shifts in the direction of the lock side of the door leaf. The end closure angle and the torque acting on the door leaf can therefore be adjusted by changing the distance between the rotary axes and / or the minimum distance between the permanent magnet and counterpart pairs when the door leaf is closed.

Reference list

1

Door leaf

1a

large side of the door leaf on the frame

2 B

wide side of door leaf on ceiling

1c

narrow side of the door leaf on the ceiling

2d

Top edge of door leaf

2nd

frame

2a

Lining board of the upper part of the frame

2 B

Door side of frame side

2c

Liner board of the side frame part

2d

Top edge of the door frame

2e

Sealing profile groove

3rd

Door closers

3a

magnet

3b

Carrier piece (of the magnet)

3c

Counterpart (optional permanent magnet)

3d

Carrier (of the counterpart)

6

Axis of rotation

QUOTES INCLUDE IN THE DESCRIPTION

This list of documents listed by the applicant has been generated automatically and is only included for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• DE 202017100143 U1 [0005]
• DE 3041572 A1 [0005]
• DE 202010005948 U1 [0006]
• DE 20003756 U1 [0006]
• DE 9304400 U1 [0008]

Claims (12)

Magnetic door closer (3), comprising at least two pairs of permanent magnet counterparts (3a, 3c) for mounting on a frame (2) and a door leaf (1) rotatably associated therewith, (a) the counterparts (3c) made of ferromagnetic or permanent magnetic Material exist, (b) the permanent magnet-counterpart pairs (3a, 3c) each with one part (3a or 3c) on the frame (2) and their respective other part on the door leaf (1) can be positioned directly or indirectly and (c ) at least one permanent magnet (3a) or counterpart (3c) can be positioned directly or indirectly in the area of one of the upper edges of the door leaf (1d) (d) when the door is closed, the magnets (3a) and their respective counterpart (3c) face each other with north and south poles Positionable horizontally are characterized in that at least two permanent magnet-counterpart pairs are spaced more than 10 cm apart. Magnetic door closer (3) after Claim 1 , characterized in that a torque of less than 3Nm acts on a door leaf which is open by 1 angular degree after removal of the pair of permanent magnets and counterparts positioned far from the axis of rotation. Magnetic door closer (3) according to one of the preceding claims, characterized in that the pair of permanent magnets and counterparts (3a, 3c) positioned far from the axis of rotation causes a torque of less than 0.1 Nm on a door leaf (1) which is open by the end closure angle. Magnetic door closer (3) according to one of the preceding claims, characterized in that no part of the pair of permanent magnet counterparts positioned at the distal axis of the rotary axis is spaced less than 1/5 of the door width from the axis of rotation (6). Magnetic door closer (3) according to one of the preceding claims, characterized in that the spacing from the axis of rotation (6) of at least part of one of the permanent magnet-counterpart pairs is less than 1/5 of the door width. Magnetic door closer (3) according to one of the preceding claims, characterized in that at least one of the magnets (3a) and its respective counterpart (3c) are spaced from one another at all times. Magnetic door closer (3) according to one of the preceding claims, characterized in that the magnet (3a) and / or the counterpart (3c) is attached to a ferromagnetic carrier piece (3b). Magnetic door closer (3) according to one of the preceding claims, characterized in that the door closer has an adjustment device. Magnetic door closer (3) according to one of the preceding claims, characterized in that the counterpart (3c) is a permanent magnet. Magnetic door closer (3) according to one of the preceding claims, characterized in that at least one magnet (3a) and / or counterpart (3c) can be glued into a groove, and / or is protected by a cap against the ingress of moisture. Magnetic door closer (3) according to one of the preceding claims, characterized in that at least one magnet (3a) or a counterpart (3c) can be positioned at least partially behind or in a sealing profile groove. Door arrangement comprising a frame (2), a door leaf (1) pivotably fastened in this frame (2) by means of hinges having an axis of rotation (6), and a magnetic door closer (3) according to one of the preceding claims.

Images