DE102018118843B3 - Door opener with magnetic locking device - Google Patents

Abstract

A door opener (2) with a housing (21) is proposed, in which a door opener latch (3) is movably mounted, which can be switched between an unlocked position and a locked position by means of an electrical coil (5) and a change (41). In order to enable a high holding force with a small volume, it is provided that the electrical coil (5) or a part of the electrical coil (5) within a movable gear part (41, 42) of the locking mechanism (4) and / or within the door opener latch (3) is arranged.

Description

The invention relates to a door opener according to the features of the preamble of claim 1.

Such a door opener is from the DE 10 26 193 B known. In the document there are two coils arranged on an axis of the trap.

The US 4,751,487 A describes an electromagnet with two coils that can be connected either in series or in parallel.

In practice, door openers are used to enable or block electrically remote-controlled doors for passage. An essential criterion for such electric door openers is on the one hand the construction volume of the door opener and on the other hand the holding force to be realized with the door opener.

From the DE 197 54 658 C1 an electrically remote-controlled door opener is known. This door opener has a housing in which a door opener latch is pivotably mounted. The door opener latch is blocked or released by a change, the change in turn interacting with an armature acted upon by a coil, and the armature in turn blocking or releasing the change. On the one hand, a high holding force can be achieved through the interaction with latch, change, armature and coil, but the mechanics are complex and require a certain amount of space.

From the DE 103 60 225 B3 an electrically operated door opener is known which also has a door opener latch pivotably mounted in a door opener housing. This interacts with a movable locking lever and a change to release or block the door opener latch. The locking lever is moved by an electric motor in order to switch the door opener latch between the release position and the blocking position.

The object of the present invention is to provide an electrically operated door opener which has a high holding force with a structurally simple structure. In particular, the door opener according to the invention should enable a small overall volume and preferably have a low release force.

This object is achieved by a door opener with the features of claim 1 and a method for operating a door opener with the features of claim 17.

The invention relates to a door opener with a housing for installation in a movable door leaf or in a stationary door frame with a door opener latch which is movably mounted in the housing and an electrical coil, around the door opener latch by means of a locking mechanism, between a release position in which the door opener latch is movable and one Lock position in which movement of the door opener latch is blocked. The locking mechanism comprises at least one gear part which is movably mounted in the housing and which is designed as an armature and / or as a change. It is essential
that the electrical coil or part of the electrical coil is arranged within a movable gear part of the locking mechanism and / or within the door opener latch.

This enables a high magnetic force to act between the parts of the locking mechanism with the smallest possible installation space.

The electrical coil can be made in one piece, i.e. be formed with a single continuous coil winding. The electrical coil can also be constructed in several parts, i.e. have multiple separate coil windings or multiple taps of a single coil winding.

For example, it can be provided that the electrical coil acts directly in the locked position between the door opener housing and a gear part of the locking mechanism, preferably the armature or the change. It can also be provided that the electrical coil acts between two gear parts of the locking mechanism, for example the armature and the change, or acts between a gear part of the locking mechanism and the door opener latch. Acting in particular means that the electrical coil induces a magnetic force between two movable parts of the locking mechanism, or between the door opener housing and a movable transmission part of the locking mechanism, or between a movable transmission part of the locking mechanism and the door release latch, in order to block movement of the door release latch.

In particular, the electrical coil is magnetically conductively connected to or integrated into a movable gear part of the locking mechanism and / or the door opener housing and / or the door opener latch in such a way that a magnetic field generated by the coil acts directly between these parts.

Locking mechanism is preferably understood to mean a switchable transmission which releases or blocks a movement of the door opener latch. In particular, the locking mechanism comprises a change that is movably mounted in the door opener housing and / or an armature that is movably mounted in the door opener housing and one or more springs in order to apply the locking mechanism either to the locking position or to the open position.

The door opener latch of the door opener can be designed, for example, as a swivel latch rotatably mounted in the door opener housing, or else as a linearly movable linear latch. The change of the door opener can be designed as a pivoted, one-armed or two-armed locking lever.

In one configuration it can be provided that the electrical coil is formed in one part or in several parts.

A multi-part coil is understood to mean, in particular, two or more coil parts or coil windings which can be controlled separately. In particular, the coil parts or coil windings are also mechanically separated, for example connected to different parts of the door opener and / or the locking mechanism or integrated into different parts of the door opener and / or the locking mechanism. For example, the electrical coil can have at least two coil parts or at least two separate coil windings, a first part of the coil or a first coil winding being connected to the housing or arranged within a wall of the housing, and a further part of the coil or a further coil winding can be inside of a movable gear part of the locking mechanism, in particular be arranged within the change and / or within the armature, and / or be designed to be integrated in the door opener latch.

After energizing the electrical coil, these several coil parts or coil windings attract and lead to a high magnetic holding force between the parts. This holding force can be additionally increased by preferably providing that the components of the locking mechanism and / or the door opener housing and / or the door opener latch have a ferromagnetic material or are formed from such.

For example, part of the housing of the door opener or part of the wall of the housing can be designed to be magnetically conductive and form a coil core or a coil pot for the part of the electrical coil connected to the housing or the coil winding connected to the housing. This allows the magnetic field lines to be bundled well without the need for additional components.

In particular, the wall of the housing can be designed in several parts and the housing part receiving part of the coil or a coil winding can be designed to be exchangeable. Preferably, the housing part receiving a part of the coil or a coil winding can be fastened to the housing via a detachable connection.

In one embodiment it can be provided that the electrical coil has at least two coil parts or at least two separate coil windings, a first part of the coil or a first coil winding being arranged within a movable gear part of the locking mechanism, preferably within the armature or the change, and one Another part of the coil or a further coil winding is arranged within another gear part of the locking mechanism, and / or is designed to be integrated in the door opener latch.

In order to establish a functionally reliable connection of the coil or the coil parts or coil windings, it can be provided that the movable part of the locking mechanism, preferably the armature and / or the change, receiving a coil part or a coil winding, a groove for guiding a connecting cable of the coil part or the coil winding has, which extends from the coil part or the coil winding to a pivot bearing of the movable part of the locking mechanism. As a result, the cable transition runs in the area of the pivot bearing of a movable part of the locking mechanism. This enables the cable transition between the immovable part of the door opener housing and the movable part of the locking mechanism to experience as little torsion as possible and to prevent a cable break.

In the sense of a high holding force, it can be provided that the at least two parts or at least two windings of the coil are arranged directly adjacent to one another in the blocking position, in particular have their smallest distance from one another in the blocking position.

In particular, it can be provided that the part of the coil or the corresponding coil core arranged within a movable gear part of the locking mechanism is flush with the surface of the gear part, and / or that the second part of the coil or its coil core connected to the door opener latch or integrated into the door opener latch is flush with the surface of the door release latch facing the change.

The flush closure of the coil part or coil core with the surface of the door opener latch or a gear part enables the two coil parts to make as direct a contact as possible in the locked position. When energized, the two coil parts are in direct contact with one another and produce a high holding force.

In one embodiment it can be provided that the change has a recess into which a nose of the door opener latch engages in the locked position, preferably engages in a form-fitting manner in order to lock the door opener latch. That has the advantage, that the holding force of the door opener is increased not only via the magnetic force, but also via a positive connection between the change and the door opener latch. In particular, it can be provided that the nose of the door opener latch and / or the recess of the change has or have an inclined contact surface such that the door opener latch acts upon the change away from the door opener latch when pivoting.

In one embodiment it can be provided that the at least two parts or coil windings of the coil can be electrically connected in series in order to operate the door opener at a higher voltage, or can be connected electrically in parallel in order to operate the door opener at a lower voltage. In this way it is easily possible to adapt the door opener to different voltages. For example, if the two coil windings or the two parts of the coil are connected in parallel, the door opener can be designed for 12-volt operation and for 24-volt operation in the case of a series connection.

To increase the achievable holding force, it can be provided, for example, that the door opener has a plurality of coils which cooperate with the locking lever and the door opener latch and which are arranged next to one another on the lock lever and / or on the door opener latch. In order to be able to flexibly adapt the door opener to different voltage conditions, it can be provided, for example, that the coils arranged next to one another can be electrically connected in parallel in order to increase the holding force of the door opener. It can also be provided that the coils arranged next to one another can be electrically connected in series in order to increase the operating voltage of the door opener.

In order to integrate the door opener according to the invention into digital home automation systems, it can be provided that the door opener has a digital bus interface with a switching device which interacts with the two coil parts in order to remotely switch or adjust the operating voltage of the door opener between a higher voltage and a lower voltage.

In particular, the door opener can have a control device which switches the two coil parts from serial operation to parallel operation for a preferably adjustable period of time and then switches back to serial operation in order to increase the holding force of the door opener. Due to the pulsed switchover between serial and parallel connection of the two coil parts, the door opener can temporarily develop a higher holding force. The pulse duration is dimensioned so that there is no thermal overload of the door opener in parallel operation.

In particular, it can be provided that the control device periodically switches the two coil parts between serial operation and parallel operation in order to increase the holding force of the door opener or to set the operating voltage of the door opener.

In order to keep the release force of the door opener as low as possible or to overcome magnetic remanence, it can be provided in one embodiment, for example, that the door opener has a control device which switches the two coil parts for a defined, preferably adjustable period of time, in opposite polarity, around the door opener latch switch to the release position.

The invention relates not only to the electric door opener as such, but also to a method for operating the door opener according to the invention, the door opener having a movable door opener latch which is switched between a locked position and a release position by a locking mechanism with a movably mounted gear element, by an electrical coil interacting with the locking mechanism and / or the door opener housing and / or the door opener latch. It is essential that the electrical coil comprises at least two separately controllable coil parts or at least two separately controllable coil windings and that the coil parts or coil windings are periodically switched between parallel connection and serial connection.

The door opener according to the invention can be used, for example, for new installations of door devices in buildings. But even existing installations can be expanded or upgraded using the door opener according to the invention.

• 1: Eine schematische Ansicht eines erfindungsgemäßen Türöffners an einer Tür;
• 2: Einen erfindungsgemäßen Türöffner;
• 2a: Den Türöffner ohne Gehäusedeckel;
• 3: Eine schematische Draufsicht des erfindungsgemäßen Türöffners ohne Gehäusedeckel in Freigabestellung;
• 4: Eine schematische Draufsicht des erfindungsgemäßen Türöffners mit abgenommenem Gehäusedeckel in Sperrstellung;
• 5: Eine schematische Draufsicht des erfindungsgemäßen Türöffners mit Steuerungsvorrichtung.

Advantageous embodiments of the door opener according to the invention are shown in the figures and described below. Show:

• 1 : A schematic view of a door opener according to the invention on a door;
• 2 : A door opener according to the invention;
• 2a : The door opener without housing cover;
• 3 : A schematic top view of the door opener according to the invention without the housing cover in the release position;
• 4 : A schematic plan view of the door opener according to the invention with the housing cover removed in the locked position;
• 5 : A schematic top view of the door opener according to the invention with control device.

1 shows a schematic representation of an embodiment of the door opener according to the invention 2 on a building door 1 , The building door 1 has a door frame 12 on which a door wing 11 about door hinges 13a and 13b is rotatably mounted. The door wing 11 is in its closed position shown by a door opener 2 secured. The door opener 2 has a door opener housing 21 with a door opener latch pivoted in it 3 on. In the 2 is a view of the door opener 2 shown.

The door wing 11 has a door lock 6 on, which is designed as a mortise lock. The door lock 6 includes a manually operated door handle 67 with a lock latch 63 interacts. The lock latch 63 is from the door handle 67 operable, ie in the housing of the door lock 3 retractable. The lock latch 63 works with the door opener latch 3 the door opener 2 together to the door or the door leaf 11 to keep in the closed position.

Like from the 2 and 2a the door opener shows 2 a door opener housing 21 on in which a door opener latch 3 is pivotally mounted. The door opener 2 is designed as an electric door opener. In the closed position of the door leaf 11 grabs the lock latch 63 into one through the door opener latch 3 formed lock latch receiving space around the door leaf 11 to lock. In the closed position, ie when the door opener latch is locked 3 , is the door opener latch 3 in the door opener housing 21 locked and cannot be swiveled. That is, the door wing 11 is in its closed position over the in the door opener latch 3 engaging lock latch 63 secured against opening. Only after withdrawing the lock latch 63 , for example by operating the doorknob 67 and / or unlocking the door opener latch 3 , the door leaf 11 to open the door.

The electric strike is triggered by an electrical opening impulse 3 switched to their release position. The electrical opening pulse can be designed as a voltage pulse or as a voltage interruption. Digital control commands or opening pulses are also conceivable. The door release latch can be in the release position 3 can be freely pivoted and thus releases the lock latch 63 free.

In the 2a is the door opener 2 shown without housing cover. Inside the door opener housing 21 is an electrical connection block 22 arranged. Via the electrical connection block 22 can the door opener 2 can be connected on site to a control line (not shown) or a digital data bus.

The locking mechanism is below the housing cover 4 the door opener 2 arranged. The locking mechanism 4 indicates a change 41 and an anchor 42 on. The change 41 is designed as a one-armed rotating locking lever and works with the door opener latch 3 together to lock or unlock them. The anchor 42 is also as in the door opener housing 21 rotatably mounted one-armed lever and is formed by a 2a coil, not shown 5 charged for the change 41 to release or block.

In the 3 and 4 is the door opener 2 also with removed housing cover and with enlarged coil 5 shown. In the 3 is the door opener 2 shown in its release position. The 4 shows the door opener according to the invention 2 in the blocking position, ie with the coil energized 5 ,

To lock the door opener latch 3 points the door opener 2 a locking mechanism 4 with a door opener change 41 and an anchor 42 on. The anchor 42 is in the door opener housing 21 about an axis of rotation 43 rotatably mounted. The connection block 22 the door opener 2 is on the left side of the 3 and 4 shown. The sink 5 is divided into two and has a first coil part 51 on that in the anchor 42 is integrated, and a second coil part 52 on the one with the door opener housing 21 or a coil pot held on the door opener housing 23 is integrated. The electrical connection of the coil 5 takes place via flexible connection lines 53 that over the axis of rotation 43 of the anchor 42 away as a loop to the electrical connection block 22 are led.

Around the door opener 2 To lock securely, the switch is intended 42 interacts with an alternating spring. This change spring applies the change 42 towards the door opener latch 3 closed, i.e. in the direction of the closed position.

The 5 shows the door opener 2 with a schematic representation of the connection of the door opener 2 to a control device 7 , The control device 7 is for electrical control of the coil 5 or the coil parts 51 and 52 educated. The control device 7 points for each coil part 51 respectively. 52 its own electrical connection. So it is possible that each coil part 51 respectively. 52 is controlled individually. Via a bus interface 71 is the control device 7 connected to a digital bus system to open the door 2 digitally controlled.

The control device 7 can act as a separate control device 7 be formed outside the door opener housing 21 is arranged. Alternatively, the control device 7 also in the door opener housing 21 the door opener 2 be integrated.

The sink 5 is divided into two parts, ie it has a first coil part 51 and a second coil part 52 on. The first part of the coil 51 is in the anchor 42 integrated. The second part of the coil 52 is in the door opener housing 21 or in a bobbin holder or bobbin 23 forming part of the housing 21 integrated training. The electrical connections of the two coil parts 51 . 52 or coil windings are from the anchor 42 or the coil pot 23 led out. So each coil part can 51 or 52 electrically controlled individually. For example. are the electrical connections of the two coil parts 51 . 52 or coil winding over flexible conductors or strands with a control board or a connection block 22 the door opener 2 connected.

To the holding force of the door opener 2 to enlarge the coil 5 two separate first coil parts each 51 and two separate second coil parts 52 on. The two coil parts 51 are electrically connected in parallel and are controlled together. Also the two coil parts 52 are electrically connected in parallel and are controlled together. Around the door opener 2 to operate at a higher voltage, for example 24V, the coil parts 51 and 52 controlled serially. At a lower operating voltage, for example 12V, the two coil parts are also 51 and 52 connected in parallel.

The coil parts 51 and 52 lie - like out 4 can be seen - directly opposite each other in the locked position. The end faces of the two coil parts 51 and 52 directly adjoin each other. As a result, the force of attraction between the two coil parts when the coil is energized 5 increases the holding force of the door opener 2 to enlarge.

LIST OF REFERENCE NUMBERS

1

door means

11

door

12

doorframe

13a

hinge

13b

hinge

2

Door Opener

21

door opener housing

22

terminal block

23

coil pot

3

strike latch

4

locking mechanism

41

change

42

anchor

43

axis of rotation

5

Kitchen sink

51

first coil part

52

second part of the coil

53

connecting cable

6

Locks

63

latch

67

door handles

7

control device

71

bus interface

Claims (17)

Door opener with a housing (21) for installation in a movable door leaf (11) or in a stationary door frame (12), with a door opener latch (3) movably mounted in the housing (21) and an electrical coil (5) around the door opener latch (3) by means of a locking mechanism between a release position in which the door opener latch (3) is movable and a locking position in which a movement of the door opener latch (3) is locked, the locking mechanism at least one in the housing (21) Movably mounted gear part, which is designed as an armature and / or as a change, characterized in that the electrical coil (5) or part of the electrical coil (5) within the movable gear part of the locking mechanism, which is designed as an armature and / or as a change / or is arranged within the door opener latch (3). Door opener according to the characteristics of the Claim 1 , characterized in that the electrical coil (5) is constructed in several parts and has at least two coil parts (51, 52) or at least two separate coil windings, and it is preferably provided that the at least two coil parts or at least two separate coil windings with different components of the door opener (2) are mechanically connected or are integrated into them. Door opener according to the characteristics of the Claim 1 or 2 , characterized in that the electrical coil (5) has at least two coil parts (51, 52) or at least two separate coil windings, a first part of the coil (51) or a first coil winding being connected to the housing (21) or within a wall of the housing (21) is arranged, and that a further part of the coil (52) or a further coil winding within a movable gear part of the locking mechanism (4), in particular within the change (41) and / or within the armature (42), and / or is integrated into the door opener latch (3). Door opener according to the characteristics of the Claim 3 , characterized in that part of the housing (21) or part of the wall of the housing (21) is designed to be magnetically conductive and a coil core or a coil pot (23) for the part of the electrical coil (5) connected to the housing (21) ) or the coil winding connected to the housing (21). Door opener according to the characteristics of the Claim 3 or 4 , characterized in that the wall of the housing (21) is of multi-part design and the housing part (23) which receives part of the coil (51) or a coil winding is designed to be interchangeable, is preferably fastened to the housing (21) via a detachable connection. Door opener according to the characteristics of the Claim 1 or 2 , characterized in that the electrical coil (5) has at least two coil parts (51, 52) or at least two separate coil windings, a first part of the coil (51) or a first coil winding within a movable gear part of the locking mechanism, preferably within the armature (42) or the change (41) is arranged, and a further part of the coil (52) or a further coil winding is arranged within another gear part of the locking mechanism (4), and / or is integrated in the door opener latch (3). Door opener according to one of the Claims 3 to 6 , characterized in that the movable part of the locking mechanism (4) receiving a coil part (51, 52) or a coil winding, preferably the armature (42) and / or the change (41), has a groove for guiding a connecting cable (53) of the Has coil part (51, 52) or the coil winding, which extends from the coil part (51, 52) or the coil winding to a pivot bearing (43) of the movable part of the locking mechanism (4). Door opener according to one of the Claims 2 to 7 , characterized in that the at least two parts (51, 52) or the at least two coil windings of the coil (5) are arranged directly adjacent to one another in the blocking position, in particular in the blocking position they have their smallest spacing from one another. Door opener according to one of the Claims 2 to 8th , characterized in that the part of the coil (5) arranged within a movable gear part (41, 42) of the locking mechanism (4) or the corresponding coil core is flush with the surface of the gear part, and / or that the part with the door opener latch (3) Connected or integrated in the door opener latch (3) second part of the coil (5) or its coil core is flush with the surface of the door opener latch (3). Door opener according to one of the Claims 2 to 9 , characterized in that the at least two parts (51, 52) of the coil (5) or the at least two separate coil windings can be electrically connected in series in order to operate the door opener (2) at a higher voltage, or can be connected electrically in parallel, to operate the door opener (2) at a lower voltage. Door opener according to one of the preceding claims, characterized in that the door opener (2) has a plurality of coils (5) which cooperate with the locking mechanism and / or the door opener latch (3) and which are juxtaposed on the locking lever (4) and / or on the door opener latch ( 3) are arranged. Door opener after Claim 11 , characterized in that the coils (5) arranged side by side can be electrically connected in parallel to increase the holding force of the door opener (2), or in that the coils (5) arranged side by side can be electrically connected in series to increase the operating voltage of the door opener (2) , Door opener according to one of the Claims 2 to 12 , characterized in that the door opener (2) has a digital bus interface (71) with a switching device which interacts with the two coil parts (51, 52) in order to remotely control the operating voltage of the door opener (2) between a higher voltage and a lower voltage toggle or adjust. Door opener according to one of the Claims 2 to 13 characterized in that the door opener (2) has a control device (7) which switches the two coil parts (51, 52) from serial operation to parallel operation for a preferably adjustable period of time and then switches back to serial operation in order to maintain the holding force of the door opener (2 ) to increase. Door opener according to one of the Claims 2 to 14 , characterized in that the control device (7) periodically switches the two coil parts (51, 52) between serial operation and parallel operation in order to increase the holding force of the door opener (2) or to set the operating voltage of the door opener (2). Door opener according to one of the Claims 2 to 15 , characterized in that the door opener (2) has a control device (7) which the at least two coil parts (51, 52) or the at least two separate coil windings for one Defined, preferably adjustable period of time switches with opposite poles in order to switch the door opener latch (3) into the release position. Method for operating a door opener (2), the door opener (2) having a movable door opener latch (3) which is switched between a locked position and a release position by a movably mounted locking lever (4) by an electrical coil (5) with the Locking lever (4) and / or the door opener latch (3) cooperates, characterized in that the electrical coil (5) comprises at least two separately controllable coil parts (51, 52) or at least two separately controllable coil windings and the coil parts (51, 52) or Coil windings are periodically switched between parallel connection and serial connection.

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