EP2514889B1 - Door opener - Google Patents

Description

The invention relates to a door opener for a door with a door leaf movably mounted in a door frame. The components of the door opener include an electrically switchable locking device with an electrical coil and a rotatably mounted armature, a rotatably mounted door opener latch and a rotatably mounted change, which is connected as a gear between the armature and the door opener latch. The locking device is electrically switchable in such a way that it switches the door opener into a locked position in a first switching position and switches the door opener into a release position in a second switching position.

From the DE 42 29 239 C1 an electric door opener is known, which is already constructed from such components, namely a coil with a rotatably mounted armature, a pivotable door opener latch and an interposed change. In this known door opener, the door opener housing is in its left extension in a left half and divided into a right half. The coil with the rotatably mounted armature is arranged in one half. The change and the door opener latch are arranged in the other half. The change and the armature form parallel swiveling planes during their rotating, ie swiveling movement, which are only slightly offset parallel to one another. The armature is designed as a two-armed lever, which cooperates with one arm with the coil and carries a role on its other arm, with which it interacts with the change. The pivot axis of the door opener latch is essentially in the pivot plane of the change. Although the arrangement results in a relatively flat structural unit, its base area is relatively large. This one in the DE 42 29 239 C1 The door opener described can be used as a so-called panic door opener, ie as a door opener for an escape and rescue route door. The reason for this is that the anchor interacts with the change via the roller mounted on the anchor. The roller triggers the movement of the anchor and change under rolling friction, so that even with strong pressure on the closed door there can be no blockage when the door release latch is released.

From the DE 102 86 665 C5 an electric door opener is known, which can also be used as a panic door opener, since the force transmission between the anchor and the change also takes place via a roller arranged on the anchor. The door opener also consists of a swiveling door release latch, a change and an electromagnet with coil and armature. In this case, the anchor is designed as a sliding anchor. As far as the arrangement of the components is concerned, the door opener is also divided into a left half and a right half. The coil with the armature is arranged in one half. The swiveling door release latch and the change are arranged in the other half. This also results in a relatively flat structure, but also with a relatively large footprint.

The DE 198 56 624 A1 and the US 4,986,584 each describe a door opener with a door opener latch mounted on an axis of rotation, with a change mounted on an axis of rotation, with a coil and an output member on the coil side mounted on an axis of rotation. The axis of rotation of the door opener latch, the axis of rotation of the change and the axis of rotation of the output member are arranged perpendicular to each other.

The invention has for its object to provide a door opener of the type mentioned, which is more compact.

This object is achieved by the invention with the subject matter of patent claim 1. This solution is a door opener for a door with a leaf movably mounted in a door frame. This door opener comprises a storage and / or receiving frame, which is referred to below as a door opener housing. The components of this door opener are stored in the storage and / or receiving frame of the door opener. The components of the door opener include an electrically switchable locking device with an electromagnet with a coil and a rotatably mounted armature. The armature has an axis of rotation about which the armature is rotatably mounted in the door opener housing. Another component is the door opener latch, which is rotatably mounted about an axis of rotation. Another component is a change, which is designed as a rotatable lever and is mounted about an axis of rotation in the door opener housing. The change is arranged between the anchor and the door opener latch. The locking device is electrically switchable, specifically in a first switch position in which the door opener latch is switched in a locked position and a second switch position in which the door opener latch is switched into a release position. Essential in the solution according to the invention is that the axis of rotation of the door opener latch, the axis of rotation of the armature and the axis of rotation of the switch are arranged perpendicular to each other.

This makes designs with a particularly compact design possible. The rotatable components mentioned can thus be arranged in a more or less interleaving manner, so to speak, in a particularly favorable manner. The door opener latch, the anchor and the change can be arranged so that the three axes of rotation mentioned perpendicular to each other intersect or cross with a slight offset. As an alternative, however, designs are also possible in which at least two of the axes of rotation intersect or intersect with only a slight offset, or intersect all three axes of rotation or intersect with only a slight offset. It can be provided that the further axis of rotation is arranged with a relatively large offset to at least one of the two intersecting axes of rotation or intersecting with a small offset. This enables particularly compact designs.

With the arrangement of the axes of rotation according to the invention, it is possible to make one or more of the rotation arms relatively long. Tailored translation ratios can be implemented. If the arm of the armature is relatively long, a relatively small holding force can be generated with a relatively small coil.

In connection with the mutually perpendicular arrangement of the axes of rotation, the components of the door opener can be arranged such that the door opener forms a compact, preferably box-shaped unit. The components can be arranged in the storage and receiving frame of the door opener so that they have sections of the outer boundary surfaces Form unit. The storage and receiving frame can at least in sections also have outer walls that form outer boundary surfaces of the structural unit.

The compactness of the structure is also determined by the design of the anchor. In this regard, it is provided according to the invention that the armature is designed as a two-armed lever which has a first lever arm, a second lever arm and the pivot bearing of the armature arranged between them, the armature in the region of the first lever arm having a section which interacts with the coil and in the region of the second Lever arm has a portion cooperating with the change, wherein when the coil is energized, the long lever arm of the armature rests on the coil attracted by the latter. Particularly preferred embodiments provide that the armature is designed as an L-shaped lever. This has a first L-leg and a second L-leg, the armature at the free end of the first L-leg having a portion which interacts with the change and in the region of the second L-leg a portion which interacts with the coil and in the from the first L-leg and the second L-leg formed vertex region has the pivot bearing.

The compactness of the structural unit is largely determined by the arrangement of the components, essentially by the arrangement of the rotatable components: door opener latch, anchor and change. In preferred embodiments, it can be provided that the structural unit is structured into a first section and a second section by a longitudinal plane. It can be provided here that the door release latch is arranged in the first section and the coil, the armature and the change in the second section. The two sections of the unit can be considered as two fictitious, in halves of the structural unit which are essentially of equal size, preferably when the structural unit is designed as a cuboid body. In this case the said first section can be considered a first flat cuboid half and the second section as a second flat cuboid half. In particularly preferred embodiments, the second section or the second flat parallelepiped-shaped half, which contains the coil, the armature and the change, can be structured such that the coil, the armature and the change are arranged on different floors, that is to say the components more or less stacked on top of each other. In this way, the arrangement is particularly compact.

In preferred embodiments it can be provided that the axis of rotation of the armature and the axis of rotation of the door opener latch are arranged in an essentially common plane, that is to say in alignment in the same common plane or only slightly offset parallel to one another. In connection with the requirement that the axis of rotation of the door opener latch and the axis of rotation of the armature are perpendicular to one another, a particularly compact arrangement is possible with this.

In preferred further embodiments it can be provided that the axis of rotation of the armature is offset from the axis of rotation of the change. In conjunction with the stipulation that these two axes are arranged perpendicular to one another, the offset arrangement of the axes results in possibilities for a particularly compact arrangement, for example in an essentially cuboidal structural unit. Here, the armature can be arranged such that its axis of rotation is arranged on one end face of the structural unit and the change can be arranged such that its rotational axis is arranged on the opposite other end face of the structural unit. In particular, in a further development of such designs, it can be provided that the axis of rotation of the change is arranged in the plane of rotation of the armature and / or the axis of rotation of the armature outside the Axis of rotation of the change is arranged. The term rotary plane is understood to mean the plane which the lever arm or the lever arms of the change or the armature forms or form.

In particularly preferred embodiments, the door opener can form a structural unit with a longitudinal axis, for example be designed as a cuboidal structural unit, and the axis of rotation of the door opener latch can be arranged along the longitudinal axis of the structural unit. The door opener latch can preferably be designed such that it extends along its axis of rotation over a large part of the longitudinal extent of the structural unit.

As already mentioned, designs are particularly preferred in which the door opener housing, that is to say the storage and / or receiving frame with the components of the door opener stored therein, namely at least the locking device, the change and the door opener latch forms an essentially cuboid structural unit. This essentially cuboid structural unit comprises a bottom-side boundary surface and, opposite, a ceiling-side boundary surface as well as two mutually opposite end-side boundary surfaces and two mutually opposite longitudinal-side boundary surfaces.

In the case of such designs, which form a cuboid structural unit, it is particularly advantageous for the compactness of the structure if the axis of rotation of the armature is arranged parallel to the boundary surface on the bottom and parallel to the boundary surface on the ceiling. It is particularly advantageous here if the axis of rotation of the armature is arranged adjacent to the floor-side boundary surface or adjacent to the ceiling-side boundary surface, that is to say the armature axis of rotation in the structural unit is relatively wide is arranged outside in the area of the floor-side boundary surface or in the region of the ceiling-side boundary surface. In this case, it can preferably be provided that the axis of rotation of the armature is arranged along the transverse extent of the cuboidal structural unit, the transverse extent of the cuboidal structural unit being defined by the spacing extension between the opposite longitudinal boundary surfaces. The armature can preferably be designed as an L-shaped lever, the axis of rotation of which is formed in the apex region of the two L-legs. In these embodiments, one L-leg can then preferably extend along the bottom-side boundary surface or along the ceiling-side boundary surface and the other L-leg along the front-side boundary surface.

In the case of designs as a cuboid structural unit, it can also be particularly advantageous if it is provided that the axis of rotation of the change is arranged parallel to the opposing end faces. A particularly compact structural unit can be obtained if the axis of rotation of the change is arranged adjacent to one of the opposing frontal boundary surfaces of the structural unit. The axis of rotation of the change can be arranged along the vertical extension of the cuboidal structural unit, the vertical extension of the cuboidal structural unit being defined by the distance between the floor-side boundary surface and the ceiling-side boundary surface.

The arrangement of the door opener latch in the unit has a special influence on the compactness of the door opener. In preferred embodiments, it is provided that the axis of rotation of the door opener latch is parallel to the boundary surface on the bottom and parallel to the ceiling side Boundary surface is arranged. It can also be provided that the axis of rotation of the door opener latch is arranged adjacent to the ceiling-side boundary surface or adjacent to the floor-side boundary surface. It can preferably be provided that the axis of rotation of the door opener latch is arranged along the longitudinal extent of the preferably cuboidal structural unit, the longitudinal extent of the preferably cuboidal structural unit being defined by the distance extension between the opposing frontal boundary surfaces.

A particularly compact arrangement results if the axis of rotation of the door opener latch is arranged adjacent to the ceiling-side boundary surface and the axis of rotation of the armature oriented perpendicular to the axis of rotation of the door opener latch is adjacent to the base-side boundary surface of the cuboid structural unit. Alternatively, it can also be provided that the axis of rotation of the door opener latch is arranged adjacent to the floor-side boundary surface and the axis of rotation of the armature is adjacent to the ceiling-side boundary surface.

The design and arrangement of the change also determine the compactness of the structure of the door opener. In preferred embodiments it can be provided that the change is designed as a one-armed lever or as a two-armed lever. The one-armed lever or the two-armed lever has a free end which interacts with the armature. In particular for designs as a so-called panic door opener, it can be provided that the change interacts with the anchor via a roller that is mounted on the exchange or that the change with the anchor via a roller interacts, which is mounted on the anchor. This interaction via a roller makes it possible for the force transmission between the change and the anchor to take place via rolling friction when triggered. This prevents a blockage between the change and the anchor, even if there is a relatively high pressure when the door opener is released on the closed door.

Versions are also provided in which the anchor does not interact with the change via a roller, but rather the change interacts with the change over a body edge of the change with the anchor or, conversely, the anchor with a body edge of the anchor with the change.

Exemplary embodiments of the invention are described below with reference to figures:

Fig. 1

eine perspektivische Ansicht eines Ausführungsbeispiels,

Fig. 2

eine perspektivische Stirnseitenansicht in Fig. 1 von rechts

Fig. 3a

eine perspektivische Seitenansicht in Fig. 1 von vorne bei nicht bestromten Elektromagneten;

Fig. 3a

eine Ansicht entsprechend Fig. 3a, jedoch bei bestromten Elektromagneten;

Fig. 4

eine Draufsicht in Fig. 1 von oben schematisch die Anordnung der Drehachsen der Türöffnerfalle, des Wechsels und des Ankers zeigend.

Show

Fig. 1

2 shows a perspective view of an exemplary embodiment,

Fig. 2

a perspective end view in Fig. 1 from the right

Fig. 3a

a side perspective view in Fig. 1 from the front with electromagnets not energized;

Fig. 3a

a view accordingly Fig. 3a , but with energized electromagnets;

Fig. 4

a top view in Fig. 1 from above schematically showing the arrangement of the axes of rotation of the door opener latch, the change and the anchor.

The exemplary embodiment shown is an electrically switchable door opener. It is preferably designed for installation in a fixed frame of a door. The door is preferably a door with a rotatable door leaf mounted on hinges on the stationary door frame. Via the door opener, it is possible to either lock or unlock the door leaf in its closed position. For this, the door opener can be switched electrically.

In the figures, the door opener is shown as an essentially cuboid structural unit 1. The unit 1 has in Figure 1 a lower floor-side boundary surface and an opposite upper ceiling-side boundary surface, which can be formed by a cover in preferred embodiments. To the in Figure 1 left and right end faces, the assembly has opposite end boundary surfaces. On the long sides there are opposing longitudinal boundary surfaces in Figure 1 designed as front and rear boundary surfaces.

In the exemplary embodiment shown, the structural unit 1 has a storage and receiving frame 2. The components of the door opener are stored in the storage and receiving frame. The storage and receiving frame 2 can be constructed in several parts and can be formed in sections by components of the door opener. It is referred to as door opener housing 2 in the following. The components of the door opener are one electrically switchable locking device with an electromagnet. The electromagnet is formed as an electrical coil 4 and a rotatably mounted armature 5. On the output side, the door opener has a pivotally mounted door opener latch 6. Another component is a change 7, which is designed as a pivotably mounted lever and, acting as a transmission, is connected between the rotatably mounted armature 5 and the rotatably mounted door opener latch 6.

What is essential in the exemplary embodiment shown is the compact arrangement of the components of the door opener. The compact arrangement is determined by the arrangement of the axes of rotation of the rotatably mounted components. In the exemplary embodiment shown, rotatably mounted components are the door opener latch 6 with the axis of rotation 6a, the armature 5 with the axis of rotation 5a and the change 7 with the axis of rotation 7a. The rotating components work together with springs supported in the door opener housing. The door opener latch 6 interacts with a helical compression spring 6f. The change 7 interacts with a helical compression spring 7f and the armature 5 with a leg compression spring 5f.

The pivot axis 6a of the door opener latch 6 is arranged in the longitudinal direction L of the structural unit 1. The longitudinal direction L is determined by the extension of the distance in Figure 1 left and right boundary surfaces determined. The arrangement of the axis of rotation 6a is close to that in FIG Figure 1 bottom boundary surface and also close to the in Figure 1 rear boundary surface, such as Figure 1 shows.

The axis of rotation 5a of the armature 5 is arranged in the transverse direction Q of the structural unit. The transverse direction Q is by the Extension of the mutual distance of the in Figure 1 front and rear boundary surfaces determined. As in Figure 1 recognizable, the axis of rotation 5a of the armature 5 is close to that in FIG Fig. 1 right end boundary surface of the assembly and is arranged near the bottom boundary surface. The axis of rotation 5a of the armature 5 is thus perpendicular to the axis of rotation 6a of the door opener latch 6. The axis of rotation 6a of the door opener latch 6 and the axis of rotation 5a of the armature 5 are essentially in one plane, as in FIGS Figures 1 and 2 is recognizable.

As best in Figure 1 recognizable, the change 7 between the armature 5 and the door opener latch 6 is arranged. The pivot axis 7a of the change 7 is close to that in Figure 1 left end face that the in Figure 1 right end face, which is the axis of rotation 5a of the armature 5, is opposite. The axis of rotation 7a of the change 7 extends in the vertical direction H of the door opener assembly. The extension H is determined by the direction of extension of the distance between the in Figure 1 floor-side boundary surface and the ceiling-side boundary surface is defined. The axis of rotation 7a of the change 7 is thus perpendicular to the axis of rotation 5a of the armature 5 and also perpendicular to the axis of rotation 6a of the door opener latch 6. The axes of rotation 7a, 5a and 6a are thus orthogonal to one another.

The axis of rotation 7a of the change 7 is arranged offset with respect to the axis of rotation 5a of the armature 5, namely the change axis of rotation 7a in the region of FIG Figure 1 left end face and the armature axis of rotation 5a in the area of the right end face of the structural unit. The axis of rotation 7a of the change 7 extends in the vertical direction H of the structural unit. The plane of rotation defined by the change 7 is close and parallel to the ceiling-side boundary surface. The axis of rotation 5a of the armature 5 lies in the transverse direction Q. The plane of rotation defined by the armature 5 is close and parallel to that in FIG Figure 1 frontal boundary surface of the unit. The axes of rotation 7a and 5a are thus spatially offset from one another and do not intersect one another.

The axis of rotation 6a of the door opener latch 6 and the axis of rotation 5a of the armature 5, on the other hand, lie in an essentially common plane, namely parallel and close to the bottom-side boundary surface of the structural unit. Since these axes of rotation 6a and 5a are directed perpendicular to each other, they intersect in the substantially common plane. The term "essentially common plane" means that there is no need for an aligned common plane, but also a slight parallel offset of the axes of rotation is possible. In the exemplary embodiment shown in the figures, there is such a slight parallel offset between the axes of rotation 6a and 5a and therefore there is also no exact intersection between the axes of rotation 6a and 5a. The axes 6a and 5a cross each other slightly offset in parallel, as can be seen in the figures.

How from Figure 1 recognizable, the door opener latch 6 extends in its longitudinal direction over a large part of the total longitudinal extent of the structural unit 1. The same applies to the longitudinal extent of the change and to the longitudinal extent of the long lever arm of the armature 5 interacting with the coil 4.

The arrangement of the components is formed in two halves in the structural unit forming the door opener. In the in Figure 1 the rear half of the door opener latch 6 is arranged. In the front half, the change is 7, the Armature 5 and the coil 4 arranged. The arrangement in this front half is divided into three floors. The door opener latch 6 and the change 7 and the short stop arm of the armature 5 cooperating with the change 7 are arranged on the floor which is close to the ceiling-side boundary surface. The axis of rotation 5a of the armature 5 and the coil 4 are located on the lower floor, which is close to the bottom-side boundary surface. The stop arm of the armature which interacts with the coil is arranged on the middle floor.

As can be seen from the figures, is directly in the area of in Figure 1 a terminal strip 8 is arranged on the left end face. It is designed as an essentially cuboid-shaped connection block and is arranged between the end face 1c and the axis of rotation 7a of the change 7.

The door opener works as follows:
The locked position of the door opener is first described. It is primarily referred to Figure 3b , When the coil 4 is energized, the door opener latch 6 is held in the locked position. This results from the fact that when the coil 4 is energized, the long lever arm of the armature 5 rests on the coil 4, attracted by it. The armature 5 is in the pivot position, which in Figure 3b is shown. In this position, the pressure spring 7f in Figure 1 counter-clockwise change 7 determined by the short lever arm of the armature 5 in the illustration. The free end of the short lever arm of the armature 5 is in contact with the roller 7r mounted on the free end of the change 7. The roller 7r is mounted on the free end of the change 7 on the side facing the anchor 5.

On the back of the change 7 facing away from the roller 7r, the free end of the change 7 is designed as a stop edge with which the change protrudes into the pivoting range of the door opener latch 6 in the locked position and blocks the door opener latch 6 against pivoting in the release direction. The door opener latch 6 is thus in its locked position. That means it is established. In the closed position of the door, it interacts with a wing-side counter element, not shown in the figures, in order to thereby determine the door wing in the closed position.

In practice, this wing-side counter element, which is not shown, is a resilient lock latch in the case of conventional revolving doors. It is mounted in the main closing edge of the door leaf in such a way that it engages behind the determined door opener latch 6 in the closed position of the door. The resilient lock latch conventionally has a slope, by means of which the lock latch is pushed over when the door is closed. That is, the lock latch is pressed into the wing by the slant on the door opener latch 6 when the door is moved into the closed position. In the closed position, the lock latch is automatically extended due to its resilient mounting. In this position, it engages behind the established door opener latch 6. The lock latch has a non-oblique blocking surface parallel to the door, via which the lock latch cannot be overpressed from the closed position. This blocking surface comes in the closed position of the door in the stop position with the locked door opener latch 6.

The release position of the door opener is now described below. It is primarily based on this Figure 3a Referred. When the energization of the coil 4 is released, the door opener latch 6 is released. The long The lever arm of the armature 5 is no longer attracted to the coil when the coil 4 is not energized. The door opener latch 6 can thus pivot about its axis of rotation 6a when the door is acted on, so that the lock latch can pass and the door leaf can thus be opened. The door opener latch swings the switch 7 in Figure 1 clockwise. The armature 5, which is in abutment with the change 7 via the roller 7r, can, under the action of the armature return spring 5f, rotate clockwise about its axis 5a into FIG Figure 3a shown position can be rotated. The long lever arm of the armature 5 is raised in this position from the non-energized coil 4, as this Figure 3a shows. As long as the coil 4 is de-energized, the door opener latch 6 is in its release position, that is to say it is unlocked. In this non-locked switching position, it is indeed in its initial position via its return spring 6f, as in FIG Figure 1 is shown, pivoted back. However, it remains unlocked as long as the coil 4 is not energized.

In the embodiment shown in the figures, the door opener latch 6 is as in FIG Fig. 2 recognizable, composed of a base body 6g and a screw-on piece 6e. The rotary bearing is formed in the base body with the axis of rotation 6a. In its position on the base body 6g, the screw-on piece 6e is removably screwed by means of screws, not shown. The screw-on piece 6e, which interacts with the lock latch of the door, can thus be adjusted to the local conditions of the door.

In an embodiment modified from the exemplary embodiment of the figures, it can also be provided that no roller 7r is provided at the free end of the change 7. In this case, a roller can be arranged on the free end of the armature 5 which interacts with the change 7. Even with this arrangement of the role when opening the Door wing from the closed position allows the deflection of the armature 5 while rolling the role. In the case of modified versions, however, it is also possible to have only one interchangeable tip run against the anchor instead of a roller and to achieve the deflection of the anchor when the door is opened due to the inclined plane.

In order to be able to guarantee the maximum holding force of the armature 5 on the coil 4 despite tolerances, the bore of the armature bearing can be oval in the embodiment shown in the figures. In conjunction with a round bearing pin of the armature 5, this results in a compensation option for the armature position in the illustration in FIGS Figures 3a and 3b in the vertical direction.

The door opener shown in the figures can, as described above, be mounted in a stationary door frame of a door and, as explained, cooperate with a door release latch 6 on the wing side. However, applications are also possible in which the door opener is mounted in the door leaf and interacts with a counter element mounted on the stationary door frame. The counter element can be a resilient lock latch comparable to a lock latch. Instead of a resilient lock latch, however, the counter element can in principle also be actuated in all types of installation as an element actuated by external energy, for example as a latch element actuated by an electromagnet or an electric motor.

LIST OF REFERENCE NUMBERS

1

Unit door opener

2

Storage and / or receiving frame

4

Kitchen sink

5

anchor

5a

Axis of rotation of 5

5f

Leg spring

6

strike latch

6a

Axis of rotation of 6

6f

feather

6g

body

6e

mounted attachment

7

change

7a

Axis of rotation of 7

7f

feather

7r

role

8th

Terminal strip

L

Longitudinal direction of 1

H

Extension direction of 1

Q

Transverse direction of extension of 1

Claims (15)

1. Door opener for a door, having a door panel supported moveably in a door frame, comprising:

   - a supporting and/or a receiving frame (2) - hereinafter referred to as a door opener housing (2) -

   - an electrically switchable locking device with an electromagnet having a coil (4) and an armature (5) being arranged in the door opener housing to be rotatable around an axis of rotation (5a);

   - a door opener latch (6) which is rotatably supported around an axis of rotation (6a) arranged in the door opener housing.

   - a changer (7) which is designed as a rotatable lever around an axis of rotation (7a) and is supported pivotably in the door opener housing;

   - wherein the changer (7) is switchable between the armature and the door opener latch and the locking device is switchable in such a way that, in a first switch position, it switches the door opener latch (6) into a locking position and, in a second switch position, switches the door opener latch (6) into a release position;

   wherein the axis of rotation (6a) of the door opener latch (6), the axis of rotation (5a) of the armature (5) and the axis of rotation (7a) of the changer (7) are arranged perpendicularly relative to one another, wherein a compact assembly is provided in that the armature (5) is designed as a two-arm lever, which has a first lever arm, a second lever arm and the pivot bearing (5a) of the armature (5) arranged between said arms, wherein the armature (5) has a section in the region of the first lever arm which works together with the coil (4) and a section in the region of the second lever arm which works together with the changer (7),
   characterised in that
   when the coil (4) is powered, the long lever arm of the armature (5) rests on the coil (4), said arm being attracted by said coil.
2. Door opener according to claim 1,
   characterised in that
   the axis of rotation (5a) of the armature (5) and the axis of rotation (6a) of the door opener latch (6) are arranged in a substantially common plane, that is to say aligned in the same common plane, or are arranged with only marginally parallel displacement relative to one another.
3. Door opener according to one of the preceding claims,
   characterised in that
   the axis of rotation (5a) of the armature (5) is arranged displaced from the axis of rotation (7a) of the changer (7).
4. Door opener according to one of the preceding claims,
   characterised in that,
   the door opener forms an assembly unit (1) that is divided in its construction into a first section and a second section by a longitudinal plane, wherein the door opener latch (6) is arranged in the first section and the coil (4), the armature (5) and the changer (7) are arranged in the second section,
   wherein it is provided
   that the coil (4), the armature (5) and the changer (7) are arranged in different levels in the second section of the assembly unit (1).
5. Door opener according to one of the preceding claims,
   characterised in that
   the door opener housing (2), together with the components of the door opener supported therein, in particular at least the locking device (3), the changer (7) and the door opener latch (6), form a substantially cuboid assembly unit (1) which has a bottom side boundary surface and an opposite top side boundary surface as well as two mutually opposite front side boundary surfaces and two mutually opposite longitudinal side boundary surfaces.
6. Door opener according to claim 5,
   characterised in that
   the axis of rotation (5a) of the armature (5) is arranged parallel to the bottom side boundary surface and parallel to the top side boundary surface.
7. Door opener according to claim 5 or 6,
   characterised in that
   the axis of rotation (5a) of the armature (5) is arranged adjacently to the bottom side boundary surface or adjacently to the top side boundary surface.
8. Door opener according to one of claims 5 to 7,
   characterised in that
   the axis of rotation (7a) of the changer (7) is arranged parallel to the opposite frontside boundary surfaces.
9. Door opener according to one of claims 5 to 8,
   characterised in that
   the axis of rotation (7a) of the changer (7) is arranged adjacently to one of the opposite front side boundary surfaces.
10. Door opener according to one of claims 5 to 9,
    characterised in that
    the axis of rotation (7a) of the changer (7) is arranged along the upwards extension of the assembly unit (1), wherein the upwards extension of the assembly unit (1) is defined by the spacing extension between the bottom side boundary surface and the top side boundary surface.
11. Door opener according to one of claims 5 to 10,
    characterised in that
    the axis of rotation (6a) of the door opener latch (6) is arranged parallel to the bottom side boundary surface and parallel to the top side boundary surface.
12. Door opener according to one of claims 5 to 11,
    characterised in that
    the axis of rotation (6a) of the door opener latch (6) is arranged adjacently to the top side boundary surface or adjacently to the bottom side boundary surface.
13. Door opener according to one of claims 5 to 12,
    characterised in that
    the axis of rotation (6a) of the door opener latch (6) is arranged along the longitudinal extension of the assembly unit (1), wherein the longitudinal extension of the assembly unit (1) is defined by the spacing extension between the opposite front side boundary surfaces.
14. Door opener according to one of claims 5 to 13,
    characterised in that
    the axis of rotation (6a) of the door opener latch (6) is arranged adjacently to the top side boundary surface and the axis of rotation (5a) of the armature (5) is arranged adjacently to the bottom side boundary surface;
    or
    the axis of rotation (6a) of the door opener latch (6) is arranged adjacently to the bottom side boundary surface and the axis of rotation (5a) of the armature (5) is arranged adjacently to the top side boundary surface.
15. Door opener according to one of the preceding claims,
    characterised in that
    the changer (7) is designed as a single-arm lever or as a two-arm lever, which has a free end which works together with the armature (5),
    wherein it is provided that
    the changer (7) works together with the armature (5) via a roller (7r) which is supported on the changer (7), or the changer (7) works together with the armature (5) via a roller which is supported on the armature (5).

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