EP2882917B1 - Glass-door opener - Google Patents

Description

• ein Türöffnergehäuse,
• einen entlang einer Betätigungsrichtung zwischen einer Verriegelungsposition und einer Entriegelungsposition linear verschiebbar gelagerten Riegel,
• eine elektrisch schaltbare Betätigungseinrichtung mit einem Elektromotor mit Linearabtrieb und einer durch den Elektromotor steuerbaren Betätigungsmechanik zur Betätigung des Riegels von der Entriegelungsposition in die Verriegelungsposition,
• eine elektromagnetische Einrichtung zur Arretierung des Riegels in der Verriegelungsposition,
• eine Rückstelleinrichtung zur Rückstellung des Riegels von der Verriegelungsposition in die Entriegelungsposition, wobei die Betätigungsmechanik den Elektromotor mit dem Riegel verbindet.

The invention relates to a door opener for a door with a door leaf movably mounted in or on a door frame. It is a door opener for a door with a movably mounted in or on a door frame door, comprising

• a door opener housing,
• a locking bar linearly displaceably mounted along an actuating direction between a locking position and an unlocking position,
• an electrically switchable actuating device with an electric motor with linear drive and an actuating mechanism which can be controlled by the electric motor for actuating the bolt from the unlocking position into the locking position,
• an electromagnetic device for locking the bolt in the locking position,
• a return means for returning the bolt from the locking position to the unlocking position, wherein the actuating mechanism connects the electric motor with the bolt.

A door opener of the type mentioned is from the EP 1 950 364 A1 known. A latch is displaceable between a locking position and an unlocking position, wherein the extension of the latch from the door opener housing by means of an electric motor and the retraction of the latch in the door opener housing by means of a return spring. For locking the bolt in the locking position, an electromagnet is provided, which cooperates with an armature. The electric motor, the armature and the bolt are connected to each other via an actuating mechanism. The actuating mechanism comprises in the known construction a multiple hinge with a plurality of pivotally interconnected each pivoting levers. This actuating mechanism is complex and complicated. In particular, there is the risk of blocking the actuating mechanism, for example, due to asymmetrical introduction of force from the electric motor and the return spring on the actuating mechanism.

From the EP 1 473 425 B1 a door opener is known with a latch which is pivotable by means of an electric motor and an actuating mechanism between a locking position and an unlocking position. Thus, an unlocking of the bolt is possible even in a powerless emergency situation, the electric motor and the actuating mechanism are arranged in a sliding cage in a door opener housing of the door opener. In energized normal operation of the cage is held by means of an electromagnet in an operating position. In the currentless emergency operation eliminates the magnetic force of the electromagnet and the cage is displaced by means of a return spring in an emergency position, so that the latch is pivoted to the unlocked position. Such a door opener is complex and complicated.

The DE 100 11 610 C1 describes a door opener in which the lock latch is first brought when unlocking by means of an electric motor and an actuating mechanism in an intermediate position in which the door is still locked. The latch slides on an inclined portion of a guide plate, which causes a force splitting when pressing the door perpendicular to the guide direction of the latch, so that a partial force acts in the direction of the latch, which presses the latch into the lock. From the EP 0 349 452 A1 is a locking fitting with a self-locking electric motor with linear drive and controllable by the electric motor actuating mechanism for actuating the bolt from the unlocked position in the locking position known. The displaceable electric motor can be fixed by an electromagnetic device.

The invention has for its object to provide a door opener with a lockable in a locking position latch, the door opener should be straightforward and ensure high reliability. In addition, versions for use on glass doors should be possible.

• ein Türöffnergehäuse,
• einen entlang einer Betätigungsrichtung zwischen einer Verriegelungsposition und einer Entriegelungsposition vorzugsweise linear verschiebbar gelagerten Riegel,
• eine elektrisch schaltbare Betätigungseinrichtung mit einem selbsthemmenden Elektromotor mit Linearabtrieb und einer durch den Elektromotor steuerbaren Betätigungsmechanik zur Betätigung des Riegels von der Entriegelungsposition in die Verriegelungsposition,
• eine elektromagnetische Einrichtung zur Arretierung des Riegels in der Verriegelungsposition,
• eine Rückstelleinrichtung zur Rückstellung des Riegels von der Verriegelungsposition in die Entriegelungsposition, wobei die Betätigungsmechanik den Elektromotor mit dem Riegel verbindet,

und wobei vorgesehen ist:

• Diese Komponenten des Türöffners stehen in spezieller Zuordnung zueinander und wirken in spezieller Weise zusammen, wie folgt:
  • Der Elektromotor ist in seiner Längsachse von einer hinteren Position in eine vordere Position verschiebbar ausgebildet.

According to the invention, this object is achieved with the subject matter of claim 1. It is proposed a door opener for a door with a movably mounted in or on a door frame door, comprising

• a door opener housing,
• a bar preferably linearly displaceably mounted along an actuating direction between a locking position and an unlocking position,
• an electrically switchable actuating device with a self-locking electric motor with linear drive and an actuating mechanism which can be controlled by the electric motor for actuating the bolt from the unlocking position into the locking position,
• an electromagnetic device for locking the bolt in the locking position,
• a return device for returning the bolt from the locking position to the unlocking position, wherein the actuating mechanism connects the electric motor with the bolt,

and wherein it is provided:

• These components of the door opener are in special association with each other and interact in a special way, as follows:
  • The electric motor is designed to be displaceable in its longitudinal axis from a rear position to a front position.

The electric motor can be fixed in the forward position by the electromagnetic device.

Between the housing of the electric motor and a door opener housing fixed stop a motor return spring is arranged.

The actuating mechanism comprises a arranged on the linear actuator of the electric motor switching member which cooperates with the bolt so that the bolt passes from an unlocking position to the locking position when the linear actuator extends from the fixed in the forward position of the electric motor.

The switching member cooperates with the latch so that the latch is released from the locking position when the electric motor reaches the rear position when the linear drive is extended.

About the electromagnetic device, the bolt can be locked by the fixing of the electric motor in the locking position and unlocked by switching the electromagnetic device, the bolt from the locking position.

The term "self-locking electric motor" is understood to mean that it is preferably an electric motor with a self-locking output element. For example, a self-locking electric motor with Linear drive be designed as a non-self-locking electric motor whose output shaft is formed as a threaded spindle, which cooperates with a linearly guided output element with internal thread, wherein the thread pitch is selected so that self-locking occurs.

The proposed door opener thus has the advantage that it is simple in construction and that the three main functions "operating the" bolt "," locking the bolt "and" resetting the bolt "are clearly separated from each other.

Essential function as a door opener is that by electrical switching of the electromagnetic device, the locking function can be canceled, d. H. the bolt is unlocked from its locking position. Preferably, the circuit of the components can be designed so that the activation takes place in that the energization of the electromagnetic device, d. H. the energization of the relevant electromagnet is turned off.

Another essential aspect is that the bolt which forms the door latch of the door opener, preferably linearly retractable and extendable. The bolt may be formed at its free end in the manner of a fork or as a U-profile, so that it engages around the edge of the door leaf in the closed position of the door in the extended position of the bolt. Preferably, the door can be designed as a glass door leaf. In a preferred manner of mounting this door opener is mounted in the upper region of the door, z. B. in the upper horizontal bar of the door frame, so that the bolt in the vertical direction and retractable and in its extended position in the closed position of the door surrounds the door at its upper edge.

It may be provided that the electromagnetic device is designed as a removable unit and / or retrofittable unit. In this way, from the proposed closed-circuit door opener a Arbeitsstromtüröffner be formed.

In preferred embodiments, it can be provided that the switching element arranged on the linear drive of the electric motor has a switching flank which cooperates with a switching flank arranged on the latch. The two switching edges form a transmission which, in addition to the deflection of the direction of action, has a power amplification depending on the angle of inclination of the switching flanks.

It can further be provided that the switching element arranged on the linear drive of the electric motor has a guide pin which interacts with a switching cam arranged on the bolt, or that the switching member arranged on the linear drive of the electric motor has a switching cam which is connected to a guide pin arranged on the bolt interacts. This arrangement forms a second transmission, which makes it possible, for example, to perform the retraction and extension of the bolt with different parameters.

The electromagnetic device for locking the bolt in the locking position may comprise a horizontal portion of the switching edge of the bolt, which forms a stop for a horizontal lower portion of the switching edge of the switching member when the bolt is in the locking position.

In a preferred embodiment it can be provided that the restoring device can be actuated without auxiliary energy. This ensures a high degree of safety with regard to a panic function of the door opener.

The restoring device may comprise a motor return spring disposed between a housing of the electric motor and a stop arranged on the door opener housing and a latch return spring disposed between the latch and the door opener housing. Advantageously, the motor return spring may be made stiffer than the latch return spring and thus apply the relatively high force for releasing the latch from the door leaf, while the latch return spring has to apply only a relatively small force to fully retract the latch into the door opener housing after release.

The motor return spring may advantageously be designed as a helical compression spring.

The latch return spring may advantageously be designed as a leg spring. The electromagnetic device according to the invention comprises an electromagnet, a preferably L-shaped hinged armature and a locking member. Preferred embodiments provide that the locking device of the electric motor comprises an electromagnet with a preferably L-shaped hinged armature and a locking member.

The locking member is inventively designed as a two-armed lever mounted on the door opener housing, wherein a first lever arm with the hinged armature cooperates and a second lever arm at its end portion has a latching nose, which cooperates with a latching recess arranged on the electric motor.

It can be provided that the first lever arm of the locking member has a latching recess which cooperates with a arranged in the apex of the L-shaped hinged armature latching curve.

It can further be provided that between the locking member and the door opener housing, a return spring is arranged so that the locking member is pressed against the latching cam formed on the latching cam.

The return spring may be formed as a helical compression spring or as a leaf spring.

The door opener is designed as a Arbeitsstromtüröffner, so that only for operating the door opener auxiliary electrical energy is needed.

It can be provided that the switching element arranged on the linear drive of the electric motor has a switching flank which cooperates with a switching flank arranged on the latch.

It can further be provided that the switching element arranged on the linear drive of the electric motor has a guide pin which cooperates with a switching cam arranged on the bolt or the switching member arranged on the linear drive of the electric motor has a switching cam which interacts with a guide pin arranged on the bolt ,

The electromagnetic device for locking the bolt in the locking position may comprise a horizontal portion of the switching edge of the bolt, which forms a stop for a horizontal lower portion of the switching edge of the switching member when the bolt is in the locking position.

It can further be provided that the electric motor is fixed in a frame of the door opener via a fastening device in its position or can be fixed. The fastening device can be, for example, a frictional fastening device, such as a clamping screw, or a positive fastening device, such as a stud, or a cohesive fastening device, such as an adhesive layer.

Further, a kit of a door opener may be provided to selectively form a quiescent current door opener or a working current door opener, comprising a door opener according to claim 15 and designed as a unit electromagnetic device, wherein the combination of the door opener according to claim 15 and the electromagnetic device, a quiescent current Door opener forms and the door opener according to claim 15 without electromagnetic device forms a Arbeitsstromtüröffner.

Fig. 1

eine schematische Darstellung einer Tür mit einem Türrahmen, einem Türflügel, zwei Türscharnieren und einem erfindungsgemäßen Türöffner;

Fig. 2

ein erstes Ausführungsbeispiel des erfindungsgemäßen Türöffners in einer schematischen Schnittdarstellung in einer ersten Position;

Fig. 3

den Türöffner in Fig. 2 in einer zweiten Position;

Fig. 4

den Türöffner in Fig. 2 in einer dritten Position;

Fig. 5

den Türöffner in Fig. 2 in einer vierten Position;

Fig. 6

den Türöffner in Fig. 2 in einer fünften Position;

Fig. 7

den Türöffner in Fig. 2 in einer sechsten Position;

Fig. 8

den Türöffner in Fig. 2 in einer siebten Position;

Fig. 9

ein zweites Ausführungsbeispiel des erfindungsgemäßen Türöffners in einer schematischen Schnittdarstellung;

Fig. 10

eine Falle des Türöffners in Fig. 2 in einer schematischen Schnittansicht;

Fig. 11

die Falle in Fig. 10 in einer perspektivischen Darstellung.

The invention will now be explained in more detail with reference to exemplary embodiments. Show it

Fig. 1

a schematic representation of a door with a door frame, a door, two door hinges and a door opener according to the invention;

Fig. 2

a first embodiment of the door opener according to the invention in a schematic sectional view in a first position;

Fig. 3

the door opener in Fig. 2 in a second position;

Fig. 4

the door opener in Fig. 2 in a third position;

Fig. 5

the door opener in Fig. 2 in a fourth position;

Fig. 6

the door opener in Fig. 2 in a fifth position;

Fig. 7

the door opener in Fig. 2 in a sixth position;

Fig. 8

the door opener in Fig. 2 in a seventh position;

Fig. 9

a second embodiment of the door opener according to the invention in a schematic sectional view;

Fig. 10

a trap of the door opener in Fig. 2 in a schematic sectional view;

Fig. 11

the trap in Fig. 10 in a perspective view.

Fig. 1 1 schematically shows a door 1 with a door leaf 4 rotatably mounted on a door frame 2 by means of two door hinges 3. The door hinges 3 are arranged spaced apart from one another along a door pivot 5. The hinges 3 are at an in Fig. 1 Left side shown vertical side of the door 1 is provided. The door leaf 4 is preferably a stop pivot wing. Embodiments of the door as a swing door, in which the door leaf 4 is formed as a swing door, however, are possible with a corresponding design of the door hinges 3. However, it is essential in the illustrated case that the door leaf is designed as a glass wing. There is a door opener used in the door, which is designed as a so-called glass door opener.

The door opener is in FIG. 1 denoted by the reference numeral 6. It is mounted in the area of the upper horizontal rail of the door frame. He is, as I said, designed specifically as a glass door opener. For this purpose, he has a special door opener trap, which is designed as a latch 11. The bolt 11 is linearly extendable and retractable, in the illustrated mounting position of the door opener, the bolt 11 in the vertical direction linear on and executable. The bolt is formed in the illustrated case at a free end as a U-profile, so that it engages in the extended position, when the door is in the closed position, the door leaf 4 at its upper edge.

The bolt is electrically actuated via a self-locking electric motor 12 and electrically disconnectable via an electromagnet 13. These components bolt 11, electric motor 12 and solenoid 13 and various transmission devices that act between these components are stored in a door opener housing 14. The latch 11 is mounted so that it can be retracted with its free end, the locking end, from the door opener housing 14 in a locking position and in the door opener housing 14 in the unlocking position in which it is out of engagement of the wing.

The Fig. 2 to 8 show structure and operation of the door opener 6 in detail.

The door opener housing 14 is an elongated box-shaped housing in which the electric motor 12 is arranged so that its longitudinal axis is aligned with the longitudinal axis of the door opener housing 14. The electric motor 12 is mounted longitudinally displaceably in the door opener housing 14, wherein it can assume a rear and a front position and can be fixed in the front position.

The electric motor 12 has a linear drive 12l. It may be a linear motor or a gear motor, wherein the transmission converts at least one rotational movement into a linear movement. At the free end portion of the linear actuator 12l, a switching member 15 is arranged, which cooperates with a switching edge 11s and with a switching cam 11k, which are formed on the latch 11. Between the housing of the electric motor 12 and a housing-fixed stop 14a, a motor return spring 16 is arranged, which is formed in the illustrated embodiment as a helical compression spring.

In Fig. 2 is the electric motor 12 in the rear position, wherein the linear actuator 12l is extended and the switching member 15 rests with its rear end portion of the stop 14a. The latch 11 is retracted into the door opener housing 14 and is in the unlocked position.

The electromagnet 13 cooperates with an L-shaped hinged armature 17. The hinged armature 17 has at one end portion a supported on the door opener housing 14 pivot bearing 17l and cooperates with the other end portion with a coil core of the electromagnet 13, wherein between the other end portion and the coil core an armature return spring 18 is arranged. The armature return spring 18 assists in releasing the hinged armature 17 from the spool core when the solenoid 13 is de-energized. In the apex portion of the L-shaped hinged armature 17, a latching cam 17r is formed, which cooperates with a latching recess 19a of a locking lever 19 when the electromagnet 13 is de-energized.

The locking lever 19 is pressed against the hinged armature 17 by a return spring 20 supported on the door opener housing 14. In the illustrated embodiment, the return spring 20 is formed as a helical compression spring. The locking lever 19 is formed as a two-armed lever which is rotatably supported in a pivot bearing 19 d supported on the door opener housing 14. The hinged armature 17 facing away from the end portion of the locking lever 19 is formed as a latching lug 19r, which cooperates with a formed on the door opener housing of the electric motor 12 latching recess 12a.

Fig. 3 shows the door opener 6 in a first intermediate position in which the linear actuator 12l of the electric motor 12 is retracted, whereby the electric motor 12 has moved against the stop 14a and the motor return spring 16 is tensioned. Linear drive 12l and motor return spring 16 are for better clarity than concealed components in Fig. 3 not shown. The latch 11 is located as in Fig. 2 in the unlocked position.

Fig. 4 shows the door opener 6 in a second intermediate position in which the electromagnet 13 is energized and the hinged armature 17 abuts the spool core of the electromagnet 13 after rotation in the pivot bearing 17l. As a result of the rotation of the hinged armature 17, the latching cam 17r disengages from the latching recess 19a of the blocking lever 19 and rests on a support section of the blocking lever 19 adjacent to the latching recess 19a. The locking lever 19 is pivoted in the pivot bearing 19d to the inner wall of the door opener housing 14 against the spring force of the return spring 20 and the locking lug 19r engages in the recess 12a of the electric motor 12 a. As a result, the electric motor 12 is fixed in its front position. The bolt 11 is located as in FIGS. 2 and 3 in the unlocked position.

Fig. 5 shows the door opener 6 with partially extended latch 11. The linear drive 12l of the electric motor 12 is now partially extended. Because the electric motor 12 is fixed in its relative position to the door opener housing 14, a switching edge 15s of the switching element 15 slides on the switching edge 11s of the bolt 11 and pushes the latch 11 out of the door opener housing 14. The latch 11 is located between the unlocked position and the locking position.

Fig. 6 shows the door opener 6 with fully extended latch 11, which is now in the locked position. The switching edge 11s of the bolt 11 has a rising portion, which forms a thrust gear with the switching edge 15s as described above, and a subsequent horizontal portion which forms a stop for a horizontal lower portion of the switching edge 15s of the switching member 15. As Fig. 6 shows, thereby the latch 11 is fixed in the locking position.

The Fig. 7 equals to Fig. 6 with the difference that the bolt 11 and the switching member 15 are cut in a different sectional plane, so that now a formed on the latch 11 switching cam 11k is visible, which cooperates with a arranged on the switching member 15 guide pin 15f. The switching cam 11k has a horizontal portion against which the guide pin 15f abuts when the latch 11 is in the locking position. The horizontal section goes in the direction of the electric motor 12 in a sloping section on the foot section as a short horizontal Section follows. Fig. 9 shows the switching curve 11k in an enlarged view.

Fig. 8 shows a position of the door opener 6, in which the bolt 11 slides back into the door opener housing 14, because the energization of the electromagnet 13 has just been turned off. The hinged armature 17 has dropped and by the armature return spring 18 in the in Fig. 2 reset initial position shown. The armature return spring 18 is dimensioned so that the static friction between the locking cam 17r on the armature 17 and the support section on the locking lever 19 is overcome, so that the locking cam 17r during pivoting back of the armature 17 in the recess 19a of the locking lever 19 occurs. As a result, the locking lever 19 is pivoted by the return spring 20 so that the latching lug 19r disengages from the latching recess of the electric motor 12. The motor return spring 16 arranged between the electric motor 12 and the stop 14a now presses the electric motor 12 into the in Fig. 2 shown rear position, wherein the switching member 15 is moved in the direction of the stop 14a. The in Fig. 7 described guide pin 15f slides on the sloping portion of the switching cam 11k, causing the latch 11 is retracted into the door opener housing 14. The switching cam 11k is dimensioned so that the switching member 15 with the switching cam 11k is disengaged before the latch 11 is fully retracted into the door opener housing 14. The bolt 11 is now moved exclusively by a latch return spring 11r, which was tensioned during the extension of the bolt 11. The latch return spring 11r is formed in the illustrated embodiment as a leg spring, one leg of which is supported on a pin 11z of the bolt 11 and the other leg on the door opener housing 14.

As Fig. 11 shows, the locking end of the bolt 11 has a U-shaped receiving portion for the formed of a glass sheet door 4, wherein rollers are provided to reduce the friction in the U-legs. The spring force of the latch return spring 11r alone is not sufficient to release the latch 11 of the door 4, which is why acting on the latch 11 via the switching member 15 engine return spring 17 in conjunction with the latch return spring 11r the required to release the latch high restoring force applies.

Schritt 1:

Der Elektromotor 12 wird kurzzeitig so bestromt, dass der Linearabtrieb 12l eingefahren wird, wobei der Abtrieb 15 an dem Anschlag 14a anliegt und die Motorrückstellfeder 16 gespannt wird.
Der Elektromagnet 13 ist unbestromt.

Schritt 2:

Der Elektromotor 12 ist unbestromt. Der Elektromagnet 13 wird bestromt, so dass der Klappanker 17 an dem Spulenkern des Elektromagneten 13 anliegt und die Ankerrückstellfeder 18 gespannt wird. Der Klappanker 17 drückt den Sperrhebel 19 in die Sperrstellung, in der die Rastnase 19r des Sperrhebels 19 in die Rastausnehmung 12a des Elektromotors eingreift.
Der Elektromotor 13 ist in seiner Lage fixiert.

Schritt 3:

Der Elektromotor 12 wird kurzzeitig so bestromt, dass der Linearabtrieb 12l ausgefahren wird. Das Schaltglied 15 bewegt den Riegel 11 in die Verriegelungsstellung und arretiert ihn dort. Die Riegelrückstellfeder 11r wird gespannt.
Der Elektromagnet 13 ist bestromt.

Schritt 4:

Der Elektromagnet 13 wird vom Stromkreis getrennt. Der Klappanker 17 wird durch die Ankerrückstellfeder 18 in seine Ausgangsposition zurückgestellt, wobei der Sperrhebel 19 so verschwenkt wird, dass die Rastnase 19r des Sperrhebels 19 außer Eingriff mit der Rastausnehmung 12a des Elektromotors 12 gelangt. Der Elektromotor 12 ist unbestromt und wird durch die Motorrückstellfeder 16 in seine hintere Position gebracht, wobei das Schaltglied 15 den Riegel 11 aus dem Eingriff mit dem Türflügel 4 zurückzieht und die Riegelrückstellfeder 11r den Riegel 11 in die Entriegelungsstellung bringt.

The door opener 6 is characterized by the following sequence of movements:

Step 1:

The electric motor 12 is momentarily energized so that the linear drive 12l is retracted, wherein the output 15 abuts against the stop 14a and the motor return spring 16 is tensioned.
The electromagnet 13 is de-energized.

Step 2:

The electric motor 12 is de-energized. The electromagnet 13 is energized, so that the hinged armature 17 rests against the coil core of the electromagnet 13 and the armature return spring 18 is tensioned. The hinged armature 17 presses the locking lever 19 in the blocking position, in which engages the locking lug 19r of the locking lever 19 in the recess 12a of the electric motor.
The electric motor 13 is fixed in its position.

Step 3:

The electric motor 12 is briefly energized so that the linear actuator 12l is extended. The switching member 15 moves the latch 11 in the locked position and locks it there. The latch return spring 11r is tensioned.
The electromagnet 13 is energized.

Step 4:

The electromagnet 13 is disconnected from the circuit. The hinged armature 17 is returned by the armature return spring 18 to its original position, wherein the locking lever 19 is pivoted so that the latching lug 19r of the locking lever 19 is disengaged from the latching recess 12a of the electric motor 12. The electric motor 12 is de-energized and is brought by the motor return spring 16 in its rear position, wherein the switching member 15 pulls the latch 11 out of engagement with the door leaf 4 and the latch return spring 11r brings the latch 11 in the unlocked position.

Step 4 illustrates that the unlocking of the door opener 6 is possible without the use of auxiliary power, so that the door opener 6 can also be used as a door opener that releases the door leaf 4 in the event of a power failure.

The door opener 6 of the FIGS. 2 to 8 is designed as a closed-circuit door opener. Fig. 9 shows a door opener 7, in contrast, is designed as a working current door opener, wherein the latch 11 of the door opener 7 in the in Fig. 6 shown position of the door opener 6 is.

The door opener 7 in Fig. 9 is structurally like the one in Fig. 2 to 8 formed door opener, with the difference that the self-locking electric motor 12 is not formed longitudinally displaceable, but is fixed in its position on the door opener housing 14 with a stud. The electric motor 12 is positioned so that it rests with its output-side end face against the stop 14a of the door opener housing 14. It is essential that the provided for determining the electric motor 12 components Electromagnet 13, hinged armature 17, armature return spring 18, locking lever 19 and return spring 20 omitted. Likewise, the motor return spring 16 is omitted.

Schritt 1:

Der Elektromotor 12 wird mit Gleichspannung kurzzeitig so bestromt, dass der Linearabtrieb 12l ausgefahren wird. Das Schaltglied 15 bewegt den Riegel 11 in die Verriegelungsstellung und arretiert ihn dort in Verbindung mit der Selbsthemmung des Elektromotors 12. Die Riegelrückstellfeder 11r wird gespannt.

Schritt 2:

Der Elektromotor 12 wird mit Gleichspannung entgegengesetzter Polarität kurzzeitig so bestromt, dass der Linearabtrieb 12l eingefahren wird, wobei das Schaltglied 15 den Riegel 11 aus dem Eingriff mit dem Türflügel 4 zurückzieht und die Riegelrückstellfeder 11r den Riegel 11 in die Entriegelungsstellung bringt.

The door opener 7 is characterized by the following sequence of movements:

Step 1:

The electric motor 12 is briefly energized with DC voltage so that the linear drive 12l is extended. The switching member 15 moves the latch 11 in the locking position and locks it there in conjunction with the self-locking of the electric motor 12. The latch return spring 11r is tensioned.

Step 2:

The electric motor 12 is briefly energized with DC voltage of opposite polarity, that the linear actuator 12l is retracted, wherein the switching member 15 pulls the latch 11 out of engagement with the door leaf 4 and the latch return spring 11r brings the latch 11 in the unlocked position.

It is also possible in the Fig. 2 to 8 illustrated door opener 6 for working power operation by the electric motor 12 in the in Fig. 3 or Fig. 6 shown position, for example, by screwing a clamping screw is fixed and the electromagnet 13 is not energized. In this case, only the electric control of the door opener would have to be modified additionally.

LIST OF REFERENCE NUMBERS

1

door

2

doorframe

3

hinge

4

door

5

Door axis of rotation

6, 7

Door Opener

11

bars

11k

switching curve

11r

Latch return spring

11s

switching edge

11z

spigot

12

electric motor

12a

recess

12l

linear output

13

electromagnet

14

door opener housing

14a

attack

15

switching element

15f

guide pin

15s

switching edge

16

Motor return spring

17

hinged armature

17l

pivot bearing

17r

locking curve

18

Armature return spring

19

locking lever

19a

recess

19d

pivot bearing

19r

locking lug

20

Return spring

Claims (14)

1. Door opener for a door (1) having a door leaf (4) moveably mounted in or on a door frame (2), comprising,

   - a door opener housing (14),

   - a bolt (11) that is mounted in a linearly displaceable manner along an actuation direction between a locking position and an unlocking position,,

   - an electrically switchable actuation device having a self-locking electric motor (12) having a linear output (12l) and an actuating mechanism that can be controlled by the electric motor (12) for actuating the bolt (11) from the unlocking position into the locking position,

   - an electromagnetic device (13, 17, 19) for fixing the bolt (11) in the locking position,

   - a return device for returning the bolt (11) from the locking position into the unlocking position, wherein the actuating mechanism connects the electric motor (12) to the bolt (11),

   wherein it is provided that
   the electric motor (12) is designed to be able to shift in its longitudinal axis from a rear position to a front position,
   the electric motor (12) can be fixed in the front position by the electromagnetic device (13, 17, 19),
   a motor return spring (16) is arranged between the housing of the electric motor (12) and a stop (14a) fixed to the door opener housing,
   the actuation mechanism comprises a switching member (15) arranged on the linear output (12l) of the electric motor (12), said switching member (15) interacting with the bolt (11) in such a way that the bolt (11) reaches the locking position from an unlocking position when the linear output (12l) extends out from the electric motor (12) fixed in the front position;
   the switching member interacts with the bolt (11) in such a way that the bolt (11) is released from the locking position when the electric motor (12) with the linear output (12l) being extended reaches the rear position, and
   the bolt (11) can be fixed in the locking position by means of the electromagnetic device (13, 17, 19) when the electric motor (12) is fixed, and the bolt (11) can be released from the locking position by switching over the electromagnetic device, characterised in that
   the electromagnetic device (13, 17, 19) comprises an electromagnet (13), a hinged armature (17) and a locking member (19), and
   the locking member (19) is formed as a two-armed lever mounted on the door opener housing (14), wherein a first lever arm interacts with the hinged armature (17) and a second lever arm has a latching lug (19r) on its end section, which interacts with a latching recess (12a) arranged on the electric motor (12).
2. Door opener according to claim 1,
   characterised in that
   the hinged armature (17) is formed as an L-shaped hinged armature (17).
3. Door opener according to claim 2,
   characterised in that
   the first lever arm of the locking member (19) has a latching recess (19a) which interacts with a latching curve (17r) arranged in the apex of the L-shaped hinged armature (17).
4. Door opener according to claim 2 or 3,
   characterised in that
   a return spring (20) is arranged between the locking member (19) and the door opener housing (14) in such a way that the locking member (19) is pressed against the latching curve (17r) formed on the hinged armature (17).
5. Door opener according to claim 4,
   characterised in that
   the return spring (20) is formed as a helical compression spring.
6. Door opener according to one of the preceding claims,
   characterised in that
   the electromagnetic device (13, 17, 19) is formed as a removable component and/or a component that can be retrospectively installed.
7. Door opener according to one of the preceding claims,
   characterised in that
   the switching member (15) arranged on the linear output (12l) of the electric motor (12) has a switching flank (15s) that interacts with a switching flank (11s) arranged on the bolt (11).
8. Door opener according to one of the preceding claims,
   characterised in that
   the switching member (15) arranged on the linear output (12l) of the electric motor (12) has a guiding pin (15f) that interacts with a switching curve (11k) arranged on the bolt (11), or the switching member (15) arranged on the linear output (12l) of the electric motor (12) has a switching curve that interacts with a guiding pin (15f) arranged on the bolt.
9. Door opener according to one of the preceding claims,
   characterised in that
   the electromagnetic device for fixing the bolt (11) in the locking position comprises a horizontal section of the switching flank (11s) of the bolt (11), said section forming a stop for a horizontal lower section of the switching flank (15s) of the switching member (15) when the bolt (11) is in the locking position.
10. Door opener according to one of the preceding claims,
    characterised in that
    the return device can be actuated without auxiliary energy.
11. Door opener according to claim 10,
    characterised in that
    the return device comprises a motor return spring (16) arranged between a housing of the electric motor (12) and a stop (14a) arranged on the door opener housing (14) and a bolt return spring (11r) arranged between the bolt (11) and the door opener housing (14).
12. Door opener according to claim 11,
    characterised in that
    the motor return spring (16) is formed as a helical compression spring.
13. Door opener according to claim 11,
    characterised in that
    the bolt return spring (11r) is formed as a leg spring.
14. Door opener according to one of the preceding claims,
    characterised in that
    the bolt (11) has a U-profile shaped or fork shaped end in order to surround an edge of the door wing in its extended position.

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