DE102023003626A1 - Magnetic holding device with minimized operating force for door handle sets and comparable operating elements - Google Patents

Abstract

Magnetic holding device with minimized operating force for door handle sets and comparable operating elements. The magnet arrangement according to the invention causes the operating force when the handle or a comparable operating element is pressed down to fall smoothly and evenly or, in combination with the force of the holding spring in the lock, remains essentially the same, which makes operation particularly for handicapped people, significantly easier. The magnet arrangement according to the invention is wear-free and guarantees the permanent, precise positioning of the controls in the rest position.

Description

The invention involves replacing the usual holding springs in door handle sets with an arrangement of permanent magnets.

The system according to the invention can be used both for door handles and for other similarly operating controls.

The magnet arrangement according to the invention causes the operating force when pressing down the pawl, in combination with the holding spring of the lock, to remain the same or decrease, while in known systems the required operating force increases more and more in accordance with the spring constant. Since a spring tension corresponding to the weight of the handle is required to hold the door handle up exactly in the rest position, in the usual designs, especially with self-locking panic locks and heavy fittings, it reaches a strength during operation during the movement that makes operation very difficult .

Physically handicapped people often have the problem of not being able to open a door, which can be a deadly danger in escape routes, for example.

With the magnetic hold-up device according to the invention, the requirement for accessibility can be met, even with heavy sets and a large angle of rotation, which is necessary for self-locking panic locks, for example, which requires a maximum torque of 25 Nm for operation.

In addition, the permanent magnets are not subject to wear. Failure due to material fatigue is practically impossible.

The resulting long service life contributes to the conservation of resources.

STATE OF THE TECHNOLOGY - RETAINING SPRINGS / RETAINING SYSTEMS

It is common to use spiral or ring springs, in rare cases coil springs. In all cases, depending on the spring constant, the spring force increases with the deformation of the spring.

In DE 20 2019 003 518.4 Spring arrangements are described which compensate for the increase in spring force and which lead to a decreasing or uniform required operating force. However, the production is very complex.

In DE 10 2021 003 666.2 A spring arrangement with magnet support is described, which also causes a decreasing operating force. Due to the limited installation space available in a support ring rosette, the system does not have enough space to work optimally. However, the magnets only ensure that the door handle is held in the rest position. The springs cause the movement into the rest position.

A holding system for door handle sets or similar that is based solely on magnetic force could not be found in our own research.

DESCRIPTION OF THE MAGNET SYSTEM ACCORDING TO THE INVENTION

Since the attractive force of magnets decreases rapidly as the distance between the magnets acting together increases, the usual arrangements are not suitable for a mechanism whose components travel a longer distance relative to one another and must be positioned precisely. The sharp decrease in magnetic force also contradicts the requirement to have enough tightening until the end of the movement so that the pressed pawl is moved exactly back to the starting position.

When removing or tilting the magnets [1],[2] perpendicular to each other ( 1 , 2 ) the attraction decreases extremely quickly as the magnets move away from each other, resulting in a jerky movement and too little attraction for the necessary movement.

Moving or turning the magnets [1],[2] ( 4 , 3 ) against each other is not suitable for exact positioning of the end position and does not transmit enough force.

In the 5 The combination of movements of the magnets [1], [2] according to the invention shown in relation to one another creates the basis for use as a holding system in door handle sets or comparable operating elements.

The magnets [1], [2] do not separate from each other suddenly and the attractive force only decreases moderately over a longer distance, so that the attractive force is still sufficient to return the control element to the rest position

According to the invention, at least one, better two opposing permanent magnets [2] are placed on the base plate [7] of the support ring sette, on the housing of a long plate set [6], the edge band [11] ( 17 ) or a comparable component. There are opposite pole magnets [1] on these, which are attached to the stop limiter plate [8] or a similar element [13] and are connected to the handle neck [3] and the handle mandrel [4]. 6

Depending on the design of the support ring rosette, the long shield or the edge band [11] ( 17 ) for the special case of in 9 In the bar fitting shown, the magnets are rounded so that they can slide freely past each other.

Depending on the design of the housing, three or more pairs of movable [1] and fixed [2] permanent magnets are also possible. When you press the door handle [10], the magnets [1] and [2] slide past each other and tilt away from each other.

This leads to the desired evenly decreasing force, which is still sufficient at the end of the force path to bring the set back exactly into the rest position.

Since materials such as stainless steel, light metal or plastic are generally used for door handle sets and the like, on which magnetism has no influence, the magnet arrangement according to the invention does not have any negative effects on the function.

The function and arrangement for a long shield set ( 7 ) a rosette set ( 8th ) and a bar fitting DE 10 2016 007 172.9 ( 9 ) shown and described.

LONG SHIELD SET (Figure 7, Figure 10, Figure 11, Figure 12)

In this case, two fixed magnets [2] are mounted on the housing of the long plate set and two movable magnets [1] on the stop limiter plate [8]. The movable magnets [1] are rounded or beveled at one end to limit the movement of the stop plate

[8] is not hindered. This is not necessary for the function of the fixed magnets [2], but makes sense because only one type of magnet is required for production.

10 represents the handle set in the rest position. The magnets [1] and [2] are close together.

11 shows an isometric detail of 10 . 12 Represents the situation when the latch is pressed. The magnets are shifted and tilted against each other. In some cases they are still so close to each other that there is sufficient attractive force to return them to the rest position.

Depending on the size of the housing, several or just one pair of magnets can be used.

ROSETTE SET (Figure 6, Figure 8, Figure 13 to Figure 15)

The arrangement of the magnet system according to the invention in rosette sets is analogous to the arrangement in a long plate set.

The movable magnets [1] are inserted into recesses in the stop limiter plate [8] and are connected to the handle mandrel [4] via these.

The fixed magnets [2] are connected to the base plate [7] of the handle set, which sits firmly on the door leaf [12].

The function is identical to the variant with long shield fittings. In this case, one-sided rounding or bevelling of the magnets [1][2] makes sense for all magnets in order to make optimal use of the small available installation space.

Depending on the size of the housing, several or just one pair of magnets can be used.

ROD FITTING (Figure 9, Figure 16 to Figure 23)

At the in 9 In the rod fitting shown, the operating rod [10] is held at the top and bottom by two support ring rosettes.

This set is specially designed for accessibility requirements, so that the specified operating force must be adhered to. Since this also depends on the type of lock installed and the properties of the door, the operating force should be adjustable. The weight of the fitting also requires a higher holding force than a simple door handle.

According to the invention, in addition to the magnet systems described, a further magnetic holding device is installed in the support ring rosettes or long plates inside the door leaf at the lower pivot point.

To accommodate the immovable magnets [2] and to securely screw the rosette [14] to the door leaf [12], a gluing strip [11] is used, which accommodates both the magnets [2] and the screw connection. In order to be able to optimally transfer the torsional forces that occur to the door leaf [12], the profile of the edge band [11] should not be circular, but rather oval ( 21 , 23 ).

The edge band has recesses for the screw connection [14] and grooves into which the immovable magnets [2] are inserted.

The pusher mandrel [4] is guided through the edge band [11], on which one or more plate-shaped holders [13] with the movable magnets [1] attached to them sit ( 17 ).

In order to adjust the high holding force on the door and lock, the required number of packages ( 18 ) from holder [13] with the movable magnets [1] and the associated fixed magnets [2]. The movable magnets [1] on the holding plate [13] are pushed onto the pusher mandrel [4] ( 16 ), the fixed magnets [2] into the recesses in the liner [11] and then fixed.

In addition to the applications described, the magnet arrangement according to the invention can also be used in the door lock itself, so that a constant or decreasing operating force is created there.

• • Die Bedienkraft bleibt über die gesamte Bewegung des Bedienelements gleich oder nimmt gleichmäßig ab, während sie bei Verwendung der üblichen Ring-, Spiral- oder auch Schraubenfedern entsprechend der Federkonstante im Laufe der Bewegung zunimmt, was insbesondere bei größeren erforderlichen Drehwinkeln, wie sie zum Beispiel bei selbst verriegelnden Panikschlössern nötig sind, die Bedienung stark erschwert.
• • Die erfindungsgemäße Federanordnung sorgt für eine gleichbleibend exakte Positionierung in der Ruhestellung. Es gibt keine Ermüdung, wie bei Federsystemen.
• • Anders als bei Ring- oder Spiralfedern kann die erfindungsgemäße Magnetanordnung so gestaltet werden, daß sie symmetrisch angreift. Das führt zu keinen außermittigen Belastungen und wirkt zentrierend. Somit reduzieren sich der Verschleiß und die Reibung in den Lagern der Stützringrosetten.
• • Da das Magnetsystem weniger Platz innerhalb einer Stützringrosette benötigt, als eine Spiralfeder, kann dieser Platz für Zusatzelemente, wie Anschlagbegrenzer, Dämpfungselemente, elektronische Module oder Lagerkugeln genutzt werden.
• • Das erfindungsgemäße System kann analog auch in Schlössern eingesetzt werden, so daß auch diese Komponente mit gleichmäßig sinkender Kraft bedient werden kann.
• • Da die Magneten erfindungsgemäß mit minimalem Abstand aneinander vorbei gleiten, entsteht kein Verschleiß durch Reibung.

Compared to conventional systems, there are the following key advantages:

• • The operating force remains the same over the entire movement of the control element or decreases evenly, while when using the usual ring, spiral or helical springs it increases according to the spring constant over the course of the movement, which is particularly the case with larger rotation angles required, such as are necessary for self-locking panic locks, making operation much more difficult.
• • The spring arrangement according to the invention ensures consistently precise positioning in the rest position. There is no fatigue like with spring systems.
• • Unlike ring or spiral springs, the magnet arrangement according to the invention can be designed so that it acts symmetrically. This does not lead to any off-center loads and has a centering effect. This reduces wear and friction in the bearings of the support ring rosettes.
• • Since the magnet system requires less space within a support ring rosette than a spiral spring, this space can be used for additional elements such as stop limiters, damping elements, electronic modules or bearing balls.
• • The system according to the invention can also be used in locks, so that this component can also be operated with a uniformly decreasing force.
• • Since, according to the invention, the magnets slide past each other with a minimal distance, there is no wear caused by friction.

LIST OF TERMS AND DESCRIPTIONS USED

• [1] opening-closing element - A component such as a flap, a door, a window that closes an opening. Shown here using an interior door as an example.
• [2] Handle set / door handle set / set - the entirety of the operating elements of a door lock, generally consisting of a handle, handle, operating rod or knob and handle mandrel, support ring rosette or long plate.
• [3] Lock - Both a standard mortise lock. as well as other bolt or latch locks or other locking mechanisms for opening-closing elements.
• [4] Support ring rosette / rosette - component that, attached to the surfaces of the opening-closing element, serves as an additional bearing for the handle mandrel and door handle or another control element, limits the movement, ensures that the handle moves back into the starting position and covers the components. Here preferably in a circular design, also the long shield that serves the same function or other design variants.
• [5] Lower support ring rosette/rosette - Second rosette of the rod fitting ( 9 ) as a second support and second pivot point, mounted on the door leaf.
• [6] Base plate / base plate of the support ring rosette - part of the handle set that is firmly connected to the opening-closing element. In the case of simple long shield sets, also the long shield itself.
• [7] Stop limiter plate - A component resting on the handle neck that, usually gripping into a slot on the handle neck or otherwise attached to the handle neck, limits the movement of the door handle via the stop point of the base plate. Here she serves According to the invention, it also accommodates the movable magnets.
• [8] Stop point - component or location of a component against which the intended part of the stop limiter plate abuts when the intended limits of movement are reached.
• Housing or cover elements of the support ring rosette - components that cover the components located in the support ring rosette, the long plate or similar design variants, create a clean finish to the latch and, in most cases, are also pivot bearings for the handle neck.
• Door handle, door handle, handle, handle, operating rod - the element with which the bolt or latch of a lock is operated. Also knob or handle.
• Handle neck - cylindrical component with an internal square that connects the handle of the latch with the handle mandrel and is used to accommodate return springs, stop limiters, etc. is used in support ring rosettes or long plates and transfers the operating force to these and the pusher mandrel.
• Handle mandrel, mandrel, square profile - usually a square bar that sits in the handle follower of the lock and onto which the door handles, handles or knobs are placed.
• Hold-up system, hold-up spring, return spring - usually a spring arrangement that ensures that the door handle or a comparable control element is returned to its rest position after operation. According to the invention an arrangement of permanent magnets.
• Rest position / initial position / initial position - position of the latch without the influence of an operating force. Generally the upper end of possible upward movement.
• End position / end position - position of the pawl under the influence of an operating force. Generally the lower end of the possible downward move.

LIST OF FIGURES AND REFERENCES

CHARACTERS

(Arrows represent operating or movement directions or force attacks. “N” and “S” indicate the polarity of the magnets.)

• 1 Magneten senkrecht voneinander abgezogen
• 2 Magneten voneinander weg gekippt
• 3 Magneten gegeneinander verdreht
• 4 Magneten gegeneinander verschoben Grundlegendes Funktionsprinzip d. erflndungsgemäßen Magnetanordnung
• 5 Magneten durch Wegdrehen voneinander abziehend
• 6 Anordnung der Magneten in einer Rosettengarnitur Arten von Türdrückergarnituren, für die das Magnetsystem dargestellt wird
• 7 Langschildgarnitur
• 8 Rosettengarnitur
• 9 Rosettengarnitur mit Stangenbeschlag und zweitem Drehpunkt Langschildgarnitur
• 10 Türdrücker in Ruhestellung
• 11 Türdrücker in Ruhestellung - Detailausschnitt isometrisch
• 12 Türdrücker in Endposition Rosettengarnitur
• 13 Türdrücker in Ruhestellung
• 14 Türdrücker in Bewegung
• 15 Türdrücker in Endposition Rosettengarnitur mit Stangenbeschlag und zweitem Drehpunkt
• 16 Isometrische Darstellung der Magnetpakete auf dem Drückerdorn
• 17 Isometrie des Magnetsystems im Türblatt
• 18 Einzelnes Magnetpaket
• 19 Schnitt durch Türblatt und eingesetztes Magnetsystem
• 20 Türdrücker in Ruhestellung - Ansicht
• 21 Türdrücker in Ruhestellung - Schnittdarstellung
• 22 Türdrücker in Endposition - Ansicht
• 23 Türdrücker in Endposition - Schnittdarstellung

Common use of magnets

• 1 Magnets pulled vertically from each other
• 2 Magnets tilted away from each other
• 3 Magnets twisted against each other
• 4 Magnets shifted against each other Basic operating principle d. Magnet arrangement according to the invention
• 5 Pulling the magnets away from each other by turning them away
• 6 Arrangement of the magnets in a rosette set Types of door handle sets for which the magnet system is shown
• 7 Long shield set
• 8th Rosette set
• 9 Rosette set with rod fitting and second pivot point long plate set
• 10 Door handle in rest position
• 11 Door handle in rest position - isometric detail
• 12 Door handle in end position rosette set
• 13 Door handle in rest position
• 14 Door handle in motion
• 15 Door handle in end position Rosette fitting with bar fitting and second pivot point
• 16 Isometric representation of the magnet packages on the mandrel
• 17 Isometric view of the magnet system in the door leaf
• 18 Single magnet package
• 19 Section through the door leaf and the inserted magnet system
• 20 Door handle in rest position - view
• 21 Door handle in rest position - sectional view
• 22 Door handle in final position - view
• 23 Door handle in end position - sectional view

IDENTIFIER / REFERENCE SYMBOLS

1

Permanent magnet movable

2

Permanent magnet fixed

3

trigger neck

4

Handle mandrel / square / handle pin

5

Rosette housing

6

Long shield housing

7

Base plate of the support ring rosette with stop

8th

Stop limiter plate on which the moving magnets are mounted

9

snap ring

10

Pawl / pusher / bar handle

11

One-glue

12

door leaf

13

Holder of the magnets on the handle mandrel

14

screw connection

15

anchor point

QUOTES INCLUDED IN THE DESCRIPTION

This list of documents listed by the applicant was generated automatically and is included solely 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.

Cited patent literature

• DE 202019003518 [0009]
• DE 102021003666 [0010]
• DE 102016007172 [0022]

Claims (8)

Magnetic holding device with minimized operating force for door handle sets and comparable operating elements, characterized in that permanent magnets [1], [2] are arranged in the set in such a way that they move against each other in the course of the operating movement towards the end position of the operating element [10], that the operating force decreases evenly, but the magnetic force is sufficient to move the operating element from the end position back exactly to the starting position without the magnets suddenly separating from one another. Magnetic holding device with minimized operating force for door handle sets and comparable operating elements Claim 1 , characterized in that one or more magnets [2] are arranged tangentially to a circular path around the pivot point of the handle mandrel [4] and are firmly connected to the base plate [7] of the set and characterized in that one or more magnets [1] are tangential are arranged in a circular path with a smaller radius around the pivot point of the handle mandrel [4] and are firmly connected to the stop limiter plate [8], so that in the rest position there is always a magnet [2] attached to the base plate [7] of the set and one on the stop limiter plate [8] is opposite the attached magnet. Magnetic holding device with minimized operating force for door handle sets and comparable operating elements according to the preceding claims, characterized in that the magnets [1], which are fixedly arranged in relation to the operating element [10], are fixedly arranged in relation to the opening-closing element [12]. When operating the controls [10], the magnets [2] slide along towards the end position and tilt away from each other ( 5 ). Magnet holding device with minimized operating force for door handle sets and comparable operating elements according to the preceding claims, characterized in that the magnets [1], [2] are rod-shaped cuboids whose poles are located on the long sides, characterized in that in the rest position Magnets [1], [2] with opposite polarity lie opposite each other along the long sides, thus attracting each other and that magnets [1], which are fixed in relation to the control element [10], are slightly beveled or rounded at one end to allow unhindered rotation around the axis of the pusher mandrel [4]. Magnetic holding device with minimized operating force for door handle sets and comparable operating elements according to the preceding claims, characterized in that the magnet arrangement according to the invention is also used to support the holding up of heavy bar sets that have a second pivot point ( 9 ), is used, whereby the magnets [1], [2] are located inside the door leaf [12], the fixed magnets [2] are connected to the door leaf [12] by means of a glue-in [11] and the movable magnets [1 ] are connected to the handle mandrel [4] by means of one or more brackets [13]. Magnetic holding device with minimized operating force for door handle sets and comparable operating elements Claim 5 , characterized in that , depending on the required high holding force, individual packages of movable magnets [1] and their holders [13] on the handle mandrel [4] and opposite magnets [2] which are firmly connected to the door leaf [12] by means of a glue-in [11]. ] must be lined up in the required number axially to the handle mandrel [4] ( 16 , 18 ). Use of the magnetic hold-up position with minimized operating force also as a hold-up position on the handle follower in locks. Use of the magnetic holding device with minimized operating force for door handle sets and comparable controls, not only for door handle sets and controls of comparable opening-closing elements, but also for controls on other components and similar constructions.

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