EP0922821B1 - Door opener - Google Patents

Abstract

A door opener wich can be used for closed-circuit current operation as well as for working current operation, includes a door latch and a trimmer which can be moved for blocking and releasing the door latch, an armature which can be displaced for blocking or releasing the trimmer, an electromagnet for displacing the armature, whereby the armature can be moved between three consecutive armature positions, namely a first armature position, a second armature position, and a third armature position. The armature positions alternately provide a locking and releasing of the door latch. The door opener also includes a stop element, which can be displaced for delimiting the displacement path of the armature between a first stop position and a second stop position such that the first or third armature position is blocked.

Description

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

Such a door opener, which is both for a quiescent current operation as well as adjustable for a working current operation is a door opener latch and a change, which movable to block and release the door opener latch is an anchor that can be blocked or released the change is adjustable, an electromagnet for Adjusting the anchor, the anchor being between three consecutive Anchor positions, namely a first anchor position, a second anchor position and a third Anchor position, is movable, in which alternately one Lock and unlock the door latch latch is, as well as a stop element, which for limitation an adjustment path of the anchor and to lock the first or third anchor position between a first stop position and a second stop position adjustable is.

Such a door opener is, for example, from EP 0 792 985 A1 known. This door opener is for both Quiescent current operation as well as for a working current operation adjustable. The door opener latch is in the quiescent current mode Electricity locks the electromagnet while it is locked switched off current is released. In working current mode the door release latch is released when energized, while the door release latch locks when the power is switched off is. The anchor is between three consecutive Positions movable, their sequence either the sequence of states locked-unlocked-locked or unlocked-locked-unlocked corresponds. Through a However, the adjustment element of the anchor is limited by the stop element and either the first or third stop position blocked.

When the electromagnet is energized, the armature becomes either attracted to or by the electromagnet moved away. By choosing whether the anchor is tightened or if the anchor moves away, the door release latch locks or is unlocked by adjusting the stop element in a simple manner, the quiescent current operation or the working current operation to get voted.

The electromagnet must be designed so that the armature in all three positions can be moved, otherwise a Change from closed-circuit operation to open-circuit operation or vice versa would not be possible. This requires electromagnets with correspondingly large dimensions and performance. Such electromagnets are expensive and require door openers with sufficient free space for installation of the magnet.

The object of the invention is to provide a door opener which can be switched from the open-circuit type to the closed-circuit type and vice versa in a simple manner and which has a compact and inexpensive structure.

This object is achieved with a door opener according to claim 1 solved. Advantageous embodiments are in the subclaims specified.

According to the invention it is provided that the electromagnet and the stop element are interconnected and one Form unit that the unit for adjusting the stop element in the first and second stop positions is movably mounted and that the armature between the electromagnet and the stop element arranged and between the adjustment path of the armature is limited.

It can be a simple and small electromagnet with a so-called attracting coil can be used. It is also possible with a so-called pushing electromagnet to use a plunger that is relatively small Has working stroke. With an attracting electromagnet Without a plunger, the anchor is under direct action of the magnetic field. Here, its performance data and dimensions correspond to those of an electromagnet, which is used in a non-convertible door opener becomes.

An advantageous embodiment of the subject matter of the invention is characterized in that the electromagnet has a core with a pole face, which the stop element opposite and as a stop the Adjustment path of the anchor limited. Thus between the Electromagnet and the stop element no other Stop are trained.

It is also advantageous that the stop element is hook-shaped is formed, with a free end of the stop element faces the electromagnet at a distance. This makes it particularly simple and reliable Limitation of the adjustment path of the anchor between the Electromagnets and the stop element guaranteed.

It is also advantageous that an adjustment device is provided through which the unit from outside a housing is slidable and lockable. This enables a type change even with the housing closed. It is advantageous to have the adjusting device on one Arrange the side of the housing, even after installing the Door opener is accessible. The adjustment device can For example, have a set screw that over a Thread on the unit moves it. Another Possibility is that an elongated hole with two locking positions is formed in the housing of the door opener. In this can be an actuator, which with the unit is coupled. The locking positions of the elongated hole correspond the two stop positions that make up the unit can take. Here is preferably a device provided which engages or lock the adjusting device in the end positions of the elongated hole.

A particularly advantageous development of the subject matter of the invention is characterized in that the electromagnet is arranged on one side of the anchor, and that the Change and the door opener latch essentially on one other opposite side of the anchor are. This allows a particularly compact structure of the door opener, which can be installed even in tight spaces Space allowed.

It is also advantageous that the anchor in two parts from one Anchor base element and a vibrating member is constructed, wherein only the anchor base element with the change in Engagement occurs that the anchor base element and the vibrating member mounted rotatably about a common axis are and that the vibrating member between the electromagnet and the anchor base element is arranged. At a Applying alternating current to the electromagnet can do so a jammed anchor base element can be shaken free. Due to the vibration generated in this way, the anchor base element, which is stuck due to a compressive force, with low magnetic forces can be solved. For a desired one Exerting force on the anchor base element in a certain Direction, the vibrating member can have a hook, which engages behind the anchor base element.

A particularly inexpensive embodiment of the invention Door opener is that by the electromagnet when energized, a tightening force in the direction of the Electromagnets can be generated and that a spring device is provided, through which the anchor against the direction the attraction force of the electromagnet is biased.

Fig. 1

eine Aufrißansicht eines erfindungsgemäßen Türöffners;

Fig. 2

eine Detailansicht von Anker und Wechsel einer anderen erfindungsgemäßen Ausführungsform;

Fig. 3

eine Einzelansicht des Ankers von Fig. 2;

Fig. 4

eine Einzelansicht des Wechsels von Fig. 2;

Fig. 5

eine aufgerissene Seitenansicht eines erfindungsgemäßen Türöffners im Arbeitsstrom-Modus mit bestromten Elektromagneten;

Fig. 6

den erfindungsgemäßen Türöffner gemäß Fig. 5 mit zurückgezogenem, die Türöffnerfalle freigebenden Wechsel;

Fig. 7

den erfindungsgemäßen Türöffner von Fig. 5 im Ruhestrom-Modus bei unbestromten Elektromagneten;

Fig. 8

den erfindungsgemäßen Türöffner von Fig. 5 im Ruhestrom-Modus bei bestromten Elektromagneten; und

Fig. 9

den erfindungsgemäßen Türöffner gemäß Fig. 5 mit zurückgezogenem, die Türöffnerfalle freigebenden Wechsel.

The invention is explained in more detail below on the basis of preferred exemplary embodiments which are illustrated in the drawings. These show schematically:

Fig. 1

an elevation view of a door opener according to the invention;

Fig. 2

a detailed view of anchor and change another embodiment of the invention;

Fig. 3

a single view of the anchor of Fig. 2;

Fig. 4

a single view of the change of Fig. 2;

Fig. 5

a side view of a door opener according to the invention in the open-circuit mode with energized electromagnet;

Fig. 6

the door opener according to the invention according to FIG 5 with withdrawn, the door release latch releasing change.

Fig. 7

the door opener according to the invention from FIG. 5 in the quiescent current mode with de-energized electromagnets;

Fig. 8

the door opener according to the invention of Figure 5 in the quiescent current mode with energized electromagnet. and

Fig. 9

the door opener according to the invention shown in FIG. 5 with withdrawn, the door release latch releasing change.

Figure 1 illustrates an electric door opener 1 in a side view, in which a housing cover largely is removed. In the sense of a clear presentation only those door release parts are shown and described, which directly with the invention Education related.

A door opener latch 2 is around a one located in the plane of the drawing Swivel axis 3 deflectably mounted and with a spring 4 biased into a position closing the door. The door opener latch 2 is acted upon by a change 5, whose pivot axis 6 runs perpendicular to the plane of the drawing. The change 5 is with a change spring 7, which itself is supported against a door opener housing 8, against the door opener latch 2 biased. Both the door opener latch 2 and the change 5 are on the sides on which they are together engage, beveled. So when opening a door not shown in the drawing, the door opener latch 2 against the bias of the spring 4 around Swivel axis 3 deflected. Here comes the door opener latch 2 with the change 5 in action, so that this to his Swivel axis 6 against the bias of the alternating spring 7 is pivoted against the door opener housing 8.

The change 5 is by an anchor 9, which is one to the drawing level vertical pivot axis 10 is mounted, locked or released. The anchor 9 shown in the drawing in this embodiment comprises an anchor base element 9a and a vibrating member 9b. If a high pressure on the door and thus the door latch is exercised, it can lead to an inhibition or jamming the anchor base element 9a and Alternate 5 come. By energizing an electromagnet 13 with alternating current, the vibrating member 9b interacts the generated magnetic force and the spring force of a bias spring 14 between the electromagnet 13 and the armature base element 9a moved back and forth. Even with one small magnetic force can anchor base element 9a again be solved.

According to FIG. 1, the armature 9 is of a prestress spring 14 applied, which is fixed to the door opener housing 8. The Armature 9 is between the electromagnet 13 and a stop element 15 arranged, and its adjustment is between limited this.

The principle is shown below with reference to FIGS. 2, 3 and 4 the interaction of change 5 and anchor 9 explained in more detail be, thereby locking or unlocking the Door opener 1 is reached. The anchor can against the Change 5 take three positions, namely: unlocked A - locked B - unlocked C (Figure 2).

In Figure 3 is an anchor 9 and in Figure 4 a change 5 in individual shown. An interchangeable head 12 with an upper notch 16a and a lower notch 16b of the change 5 engages into a recess 11 of the armature 9. In the unlocked positions The change 5 thus has A and C of FIG. 2 Freedom of movement. Of course it is also possible form the anchor 9 and the change 5 so that three positions locked A - unlocked B - locked C achieved become. It is crucial, however, that a first anchor position, a middle second anchor position and a third Anchor positions follow each other, with adjacent positions locked or unlocked in a different state assigned.

A quiescent current-open-circuit switchover is achieved by either the first position unlocks A or the third position unlocked C is locked. To do this the electromagnet 13 and the stop element 15 are one unit. The armature 9 is between the electromagnet 13 and the stop element 15 is arranged and its adjustment path limited to two anchor positions in between. A change between the open-circuit type and the quiescent current type takes place according to the invention by adjusting the unit from the stop element 15 and electromagnet 13 between a first position and a second position between which the unit is movable is stored.

In Figures 1, 5 and 6, the unit is on one upper end position on the inside of the door opener housing 8, near a terminal block 17. This is used for Connection of the necessary electrical leads. Consequently the displacement of the armature 9 to the positions C and B (Figure 2) limited. When the electromagnet is de-energized 13 the anchor 9 with the anchor base element 9a through the Preload spring 14 up to the stop element 15 in the position B (locked) pressed. With energized electromagnet 13 the basic stop element 9a becomes the electromagnet 13 in the position C pulled (unlocked) where it stops. In the working current type is thus realized in this arrangement.

In Figures 7, 8 and 9, the unit is made of an electromagnet 13 and stop element 15 with a distance d against that spaced upper end of the door opener housing 8. hereby shifts the one accessible to the anchor base element 9a Adjustment path from positions C and B, as in the figures 1, 5, 6 shown, to positions B and A. Thus unlocked the door opener when the electromagnet is de-energized and locked when energized to the electromagnet 13, which the Corresponds to the quiescent current type.

The electromagnet 13 of the door opener shown in Fig. 1 in the open-circuit mode is not energized and the anchor base element 9a is therefore in position B. When the electromagnet 13 is energized, the armature base element 9a against the force of the biasing spring 14 for Electromagnet 13 pulled and is in position C, as shown in Fig. 5. The interchangeable head 12 is located outside the recess 11 of the anchor base element 9a. The change 5 can thus from the door opener latch 2 when opening the door against the force of the alternating spring 7 moves in the direction of the door opener housing 8 and release the door opener latch 2, as shown in Fig. 6 is shown.

In Fig. 7 the door opener 1 is shown in the quiescent current mode. The unit of electromagnet 13 and stop element 15 is in the open-circuit mode compared to the door opener opposite the upper end of the door opener housing 8 Distance d adjusted. This is the adjustment of the anchor base element 9a limited to positions B and A. The electromagnet is in the state shown in FIG. 7 13 is de-energized and the anchor base element 9a is located consequently in position A, the change 5 is movable and the door opener 1 unlocks. Fig. 8 shows the same Door opener with energized electromagnet 13. Contrary to Force of the biasing spring 14 is the anchor base element 9a in position B has been pulled and the door opener is locked. In Fig. 9 the same door opener is again with shown electroless electromagnet 13 and shows change 7 in its position releasing the door opener latch 2.

Claims (7)

1. A door opener, which can be adjusted to fail safe operation as well as fail secure operation, with

   a door latch (2),

   a locking lever (5), which is movably supported for blocking and releasing the door latch (2),

   an anchor (9), which is movably supported for blocking and releasing the locking lever (5),

   an electromagnet (13) for adjusting the anchor (9), whereby the anchor (9) is movable between three consecutive anchor positions (A, B, C), namely a first anchor position (A), a second anchor position (B) and a third anchor position (C), which provide a locking and release of the door latch (2) alternatively, and

   a stop element (15), which can be adjusted for delimiting a displacement path of the anchor (9) and for blocking the first (A) or the third anchor position (C) between a first stop position and a second stop position,

   characterized in that

   the electromagnet (13) and the stop element (15) are connected to each other and form a unit,

   the unit is movably supported for adjusting the stop element (15) into the first and second stop position, and

   the anchor (9) is arranged between the electromagnet (13) and the stop element (15) and the displacement path of the anchor (9) is delimited between the anchor and the electromagnet.
2. A door opener according to claim 1,
   characterized in that
   the electromagnet (13) has a core with a pole plane, which is opposite to the stop element (15) and delimits the displacement path of the anchor (9) as a stop.
3. A door opener according to claim 1 or 2,
   characterized in that
   the stop element (15) is hook-shaped, whereby a free end of the stop element (15) is opposite to the electromagnet (13) at a distance.
4. A door opener according to any one of claims 1 to 3,
   characterized in that
   a displacement arrangement is provided, through which the unit can be adjusted and fixed from the outside of a housing (8).
5. A door opener according to any one of claims 1 to 4,
   characterized in that
   the electromagnet (13) is arranged on one side of the anchor (9) and
   in that the locking lever (5) and the door latch (2) are basically arranged on another side opposite to the anchor (9).
6. A door opener according to any one of claims 1 to 5,
   characterized in that
   the anchor (9) is formed in two parts with an anchor basic element (9a) and a vibration arm (9b), whereby only the anchor basic element (9a) engages with the locking lever (5),
   in that the anchor basic element (9a) and the vibration arm (9b) can be rotated against each other around a common axis (10), and
   in that the vibration arm (9b) is arranged between the electromagnet (13) and the anchor basic element (9a).
7. A door opener according to any one of claims 1 to 6,
   characterized in that
   a force of attraction can be generated in the direction of the electromagnet (13) by supplying current to the electromagnet (13), and
   in that a spring arrangement (14) is provided, through which the anchor (9) is pretensioned contrary to the direction of the force of attraction of the electromagnet (13).

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