EP2612976A2 - Swing door leaf actuator and door assemblies fitted with same - Google Patents

Abstract

The variable-sweep actuator (14) has a lever (5) that is rotatably arranged on a driven shaft (4). A sensor (7) is provided to detect the approach of the lever to a rocker arm portion (6) in a projecting region of the rocker arm portion into a rotation region of the lever. An elastic element is biased by a motor based on the detected signal of the sensor or the driven shaft is rotated by the motor along a predetermined direction.

Description

The invention relates to a Schwenkflügelbetätiger and thus equipped door assemblies.

Many different swing leaf actuators (eg door closers, door drives) for automatically opening and / or closing doors are known in the prior art. In some of them, the user's desire to open a door is also determined by a force exerted on the door by the user, and the user's endeavor is assisted by a drive exerting a force on the door, thereby opening it. If the user does not exert any further force on the door leaf or the door, a spring prestressed during the opening process closes as an elastic element and / or the drive automatically closes the door. Sometimes a time delay is used. For detecting the door opening request of the user, a so-called angle encoder is usually used in the drive in the prior art. About this a movement of the door leaf are detected and activated in response to the drive. As a result, the door usually opens at a constant speed up to a predetermined angle. Thereafter, the drive can turn off, and the door closes (possibly after a predetermined delay) by a force storage such. B. a preloaded spring or through the intermediary of the drive in the opposite direction. In a door drive this is done either by driving the motor or also by switching an elastic element. The well-known door arrangements is common that opening the door regardless of the speed with which the user actually wants to open the door.

It is an object of the present invention to obviate the drawback known from the prior art. It is a further object of the present invention to provide a door assembly having a security function whereby a door (eg, blocked by a user) will stop after a contact with the blocking member and / or reopen automatically.

The above objects are achieved by a swing leaf actuator with the features of claim 1 and a door assembly having the features of claim 10.

The term swing-wing actuator relates to all devices which are capable of pivoting a pivoting wing connected thereto in at least one direction. In the door area, the term swing-wing actuator thus includes revolving door drives and door closers. According to the invention, the swing-wing actuator for this purpose has a first elastic element and / or a first motor. When present, the first elastic member is adapted to rotate by means of relaxation an output shaft of the swing-wing actuator in a predetermined, first direction. If there is the first motor, it is now set up to rotate the output shaft in the first, predetermined direction during operation. When the swing-wing actuator has the aforesaid first elastic member, it further comprises a second motor configured to further bias the first elastic member. On the output shaft according to the invention a first lever is arranged rotationally fixed. Furthermore, the swing-wing actuator according to the invention has a drag lever. The drag lever is freely rotatably mounted at both ends. At one end he is at one

Swing vanes freely rotatably mounted. In addition, the drag lever protrudes at least with a portion in the rotation range of the first lever, and at least in a corresponding with the aforementioned first direction of pivoting direction of the first lever. Furthermore, the swing-wing actuator comprises a sensor. This is arranged to detect an approach of the first lever to the finger lever in the region of the intrusion of the finger lever into the rotation range of the first lever. If the sensor has detected such an approach, it is further arranged, in the presence of the aforementioned first elastic element, to instruct the second motor to further bias said first elastic element. Otherwise, that is, if there is the first motor, then this is instructed according to the invention, to rotate the output shaft in the first direction. The first elastic element or the first motor can be housed in a housing. In order to describe the principle of operation in the present invention, it is further assumed that the swing-leaf actuator or its housing is fastened fixedly (eg on a wall). In the context of kinematic reversal, however, it would also be possible to attach the housing to the door itself. According to the invention, the first elastic element is thus adapted to exert a force on a door via the aforementioned first lever. For this purpose, the elastic element is supported at least on one side so as to be fixed in space (eg on the housing of the power door closer). Via the output shaft, the first elastic element or the first motor exert a force on the first lever. Next, the cam follower is rotatable on the housing or z. B. attached to the first lever. Although it can basically have the same axis of rotation as the first lever (eg., Via the output shaft) or z. B. be set close to the first lever on the output shaft, but experiences by a rotation of the output shaft no immediate torque. With its second end of Schlepphebei is exemplified attached to the door leaf. The anchoring point between the door leaf and the drag lever can thereby allow a rotation of both elements to each other and in addition a shift in the door leaf longitudinal direction or in Schlepphebellängsrichtung. Furthermore, the aforementioned sensor can be used as a "force sensor". About the force sensor remote from the swing leaf actuator or its housing portions of the finger lever and the first lever are coupled together. Since the force sensor can detect a force-transmitting connection between rocker arm and first lever, the force sensor emits a signal upon rotation of the rocker arm relative to the first lever (for example, by opening the door by a user). This signal can be used to tension the first elastic element and thus facilitate opening of the door.

The subclaims show preferred embodiments of the present invention.

Preferably, in the presence, the second motor is arranged to rotate the output shaft in a direction opposite to the aforementioned first direction while still further biasing the first elastic element. Applied to a revolving door wing, the swing-wing actuator thus becomes a revolving door drive or a power door closer.

Alternatively or additionally, the drag lever is the other end freely rotatably mounted on the output shaft about the same axis of rotation as the first lever. This allows a particularly space-saving arrangement of the two levers.

The aforementioned, first motor can be set up via the output shaft, the first lever and the rocker arm in a with to pivot in the direction corresponding to the second direction. Ie. the arrangement of the first lever and rocker arms can act in the second direction like a classic linkage arm.

With the aforementioned first elastic element, the first motor and the second motor may be the same motor. Ie. the swing wing actuator according to the invention comprises only a single motor, which simplifies the structure.

The sensor used according to the invention may comprise a switch by which a circuit is closed in a force acting between the first lever and the finger follower lever or a movement of both levers in a predetermined section towards each other. As a result, a drive (for example, the second motor) is supplied with a degree of electrical energy tailored to the force effect. The drive can be housed within the swing-wing actuator or within the housing, but in principle also be provided separately on the door. As a result of the application of electrical energy, the drive is caused to tension the spring, ie to continue to bias, which can be done by opening the door (for example by turning the door leaf). Additionally or alternatively, the force sensor may comprise a potentiometer or a piezo element. Both elements make it possible to use the force effect not only with respect to a predefined threshold value, but also to carry out a quantitative determination of the force exerted on the rocker arm via the door leaf and with respect to the first lever. The signals of the potentiometer, in short Poti, or the piezoelectric element can of course be converted by an amplifier circuit or control means to act on the drive with a suitable control signal.

Furthermore, a second elastic element can be arranged parallel to the force sensor, by means of which part of the forces to be transmitted between the first lever and the drag lever is transmitted. As a result, the force sensor is less heavily mechanically loaded, so that a more sensitive force sensor can be used. The arrangement between the force sensor and the second elastic element can alternatively or additionally also take place in series with regard to the flow of force. The mechanical tuning of the two components can be carried out to the effect that up to a motor compression of the first elastic element in response to a signal of the force sensor, the second elastic element allows a manual opening of the pivoting vane at least by a predefined small measure. As a result, the user acceptance for the swing-wing actuator according to the invention, in particular in the embodiment of a power door closer, can be improved.

Further advantageously, it can be provided for the second elastic element that it is tensioned by the drive during the opening process of the door and released only after reaching a maximum door opening (possibly after elapse of a predefined period of time) from the drive and used to close the door. This can be done in such a way that after reaching a maximum desired door opening (and an optional residence time), the drive is de-energized and the tensioned spring on the one hand closes the door while optionally additionally actuates the drive backwards. This has the advantage that the drive only has to be set up to tension the spring, but not directly to close the door.

The swing-wing actuator preferably comprises means for outputting a sensor-derived signal. Ie. the swing-wing actuator can be coupled to an external circuit which receives signals from the Sensor can receive and react to it. Such a circuit may be, for example, a building management circuit.

Advantageously, the output shaft is accommodated in the housing of the Schwenkflügelbetätigers invention.

Each of the aforementioned swing-wing actuators may have storage means. The storage means are arranged according to the invention to provide characteristic curves or characteristic fields between a movement exerted by a user on the pivoting wing movement and a control of the second motor for at least weiterervorspannen the first elastic element. This makes it possible for the Schwenkflügelbetätiger to perform the engine control targeted. For example, this makes it possible, depending on the acceleration of the wing to provide the engine with more or less energy and so with minimal energy consumption to stretch the elastic element only as far as absolutely necessary. The characteristic curves or characteristic maps have the advantage that no elaborate logic and data processing are necessary for signal evaluation. On the basis of the sensor signal, the characteristic curves or fields stored, for example, in a database are simply searched for corresponding values for driving the second motor.

Further advantageously, control means can be provided which are set up to receive signals from the sensor, in particular signals which can be evaluated quantitatively, and to trigger the aforementioned, second motor in response to the received signals. This has the advantage that a more precise adaptation between a force exerted by a user on the door leaf force and the characteristic of a subsequent door opening can be done by the swing-wing actuator. For example, the inertia of the swing-wing can be considered more accurately be deposited by the aforementioned characteristics, which describe a relationship between an initially applied by a user on the door leaf force pulse and a force exerted in the further course of the door opening operation force action by the user. Furthermore, the control means may realize a time delay to be provided between the realization of a maximum door opening request by the user and initiation of the automatic door closing operation.

Additionally or alternatively, a damping element can further be provided, by means of which the movement of the connected pivoting leaf can be braked by the tensioned, first elastic element.

According to another aspect of the present invention, there is provided a door assembly comprising at least one door and a power door closer or door operator as described above.

Figur 1

eine Draufsicht auf eine erfindungsgemäße Türanordnung, umfassend einen erfindungsgemäßen Schwenkflügelbetätiger;

Figur 2a

die in Figur 1 gezeigte Anordnung beim manuellen Öffnen;

Figur 2b

die in Figur 1 gezeigte Anordnung bei gleichförmiger Bewegung während des automatischen Öffnens;

Figur 2c

die in Figur 1 gezeigte Anordnung während des beschleunigten automatischen Öffnens.

The invention will now be described in detail with reference to the accompanying drawings. In these show:

FIG. 1

a plan view of a door assembly according to the invention, comprising a Schwenkflügelbetätiger invention;

FIG. 2a

in the FIG. 1 shown arrangement when opened manually;

FIG. 2b

in the FIG. 1 shown arrangement with uniform movement during automatic opening;

Figure 2c

in the FIG. 1 shown arrangement during the accelerated automatic opening.

FIG. 1 shows a door assembly 1 with a door 2, which is suspended on a hinge 12 and thus forms a pivoting wing. The door 2 is connected via an anchoring point 11 and a drag lever 6 to a housing 3 of a swing-wing actuator 14 according to an embodiment of the invention. Although a pivot point of the drag lever 6 coincides spatially with a (output) shaft 4 of the swing-wing actuator 14, but drives the shaft 4 (by a motor, not shown) not the drag lever 6, but a first lever 5 at. This is arranged by way of example in the finger lever 6 and can drive it during a rotation by exerting (eg via a sensor 7) a pressure force on its inner side or wall 17. At a remote from the shaft 4 end of the first lever 5, a spring 8 is connected as a second elastic element with the cam follower 6. The spring 8 is designed as a compression spring, which shortens its length when the drag lever 6 is rotated relative to the shaft 4 due to movement of the door leaf (eg, by a user). Parallel to the spring 8 of here designed as a force sensor sensor 7 between the shaft 4 opposite end of the first lever 5 and the drag lever 6 is arranged. In conjunction with the FIGS. 2a to 2c is discussed in more detail on the interaction of the individual components.

FIG. 2a shows the in FIG. 1 illustrated arrangement 1, as it could occur in the case of a manual opening of the door 2 by a user or in a blockage of the door when driven closing, for example, by an object or a user. First, the case of a manual opening will be discussed. If a user opens the door 2 manually, the anchoring point 11 and thus the anchor point will move one end of the drag lever 6 in the arrow direction, whereby the sensor 7 and the spring 8 between the first lever 5 and the drag lever 6 experience a pressing force relative to the first lever 5. At the same time an unspecified and operatively connected to the shaft 4 in a known manner closing spring of the swing-wing actuator 14 as the first elastic element and a damper 10 is influenced as a damping element through the door opening.

Spring and damper 10 act between the housing 3 and the first lever 5, whereby they extend through a door opening. This is accompanied by a corresponding force effect on the first lever 5. The arrangement of the spring and the damper 10 are only to be understood schematically, since their effect in practice will take place just above the shaft 4 on the first lever 5.

According to the invention, the sensor 7 transmits the sensor signals to an evaluation unit 9 arranged here in the housing 3 as a control means. The evaluation unit 9 determines on the basis of the measured force effect and exemplarily on the basis of stored in a memory 13 curves or characteristic fields, with which electrical signal the motor as the drive shaft 4 must apply to meet the door opening request of the user as accurately as possible.

As a result, the motor will drive the shaft 4 accordingly, whereby the lever 5 pivoted in the opening direction, while spring and damper 10 are extended and the pressure force on the sensor 7 and spring 8 is reduced.

This situation is in FIG. 2b illustrated in which the decreasing force on the elements sensor 7 and spring 8 to a middle position of the first lever 5 has resulted in relation to the drag lever 6. In other words, the swing-wing actuator 14 in response to the control signal of the evaluation unit 9, the first lever 5 the follower lever 6 such that the force is counteracted to the sensor 7. Ie. The shaft 4 can be driven by the (electric) motor as a drive such that the relative position between the first lever 5 and cam follower 6 corresponds to the position at rest, ie when the door 2 is closed.

If the door opening request of the user is realized, the user will refrain from further force acting on the door, whereby the pressure force on the sensor 7 and spring 8 has continued to decrease.

For a short time, the in Figure 2c shown situation in which the opening force, which is transmitted via the first lever 5 to the finger lever 6, no force of the user is on the door leaf opposite. For this "overshoot" with a decrease in the force action by the user or by a signal of Endlageschalters than here second sensor 15, which can also be implemented for example via an arranged on the shaft 4 angle encoder or cooperating with the slide door dien door 2 cams, For example, the swing-wing actuator 14 of the invention can recognize that further opening of the door 2 is not desired. This can be detected, for example, in the evaluation unit 9 and signaled to the engine.

In addition, the door 2 can stay in a fully open position for a predetermined period of time before the door 2 closes again.

During door closing, door 2 is (apart from frictional forces) as in FIG. 2b shown substantially free of further forces, whereby the first lever 5 and the drag lever 6 are preferably substantially in parallel position to each other. In other words, spring 8 and sensor 7 experience only negligible pressure forces.

The spring 8 preferably has such a biasing force that the swing-wing actuator 14 is able to close the door 2 while the levers 5, 6 maintain such a relative position to each other that both sensors 7, 15 are not actuated are (cf. FIG. 2b ).

However, if during door closing the door 2 is blocked, for example by a user placing a foot in the door, the follower lever 6 follows as in FIG FIG. 2a no longer shown the closing movement of the first lever 5, whereby the spring 8 and the sensor 7 again experience a now increased pressure force. As a result, the sensor 7 is actuated and thereby cause the evaluation unit 9 to drive the shaft 4 via the motor in order to open the door 2 again or to keep it in the current open position. This ensures that animals, children and objects by an automatic closing of the door 2 take no harm or the ergonomics of the door assembly 1 according to the invention is increased.

The difference to a rest position in which the door 2 should also generally experience some bias by the closing mechanism of the swing-wing actuator 14 may be similar to the final position after the door opening request is satisfied by a cam or an angle encoder.

A central idea of the present invention is to detect a force acting on a door 2 by a user in height, and thereby not to make a restoring force acting on the door 2 (for example by spring or damper 10) appear to the user in that a drive compensates for that part of the restoring force which is exerted on the door 2 by the elements (spring and damper 10) provided for automatically closing the door 2. If both the opening and the closing of the door z. B. is done directly by a motor in a door drive, the engine is so controllable by the present invention that this correspond to the user of the nature of his door opening request best possible possible support. Thus, the user can open a door assembly according to the invention approximately as if no restoring force was present.

As can be seen, the lever 5 is preferably completely received in the finger lever 6. Ie. For the user of the door 2, the appearance of a conventional, automated door 2 with "a" linkage arm in the form of drag lever 6 results. On the other hand, the space requirement of the levers 5, 6 is determined by the drag lever 6.

On the shaft 4 remote end of the lever 5, a roller 16 is preferably arranged freely rotatable. The roller 16 prevents the other lever 5 can rub here on a wall 17 of the finger lever 6. The role thus serves to reduce the friction between the levers 5, 6 and thus the longevity of the entire arrangement.

The above-described Schwenkflügelbetätiger 14 thus represents a servo door closer, which allows the user or user of the door 2 to open this without having to stretch the (normally-open) spring of the Schwenkflügelbetätigers 14. So he has the impression of a door without a door closer or swing door drive, although the door 2 is automatically closed.

The invention is not limited to the above-described embodiment.

For example, the motor of the swing-wing actuator 14 may be configured to open the connected swing-wing in the form of the door 2 by way of example. Ie. it is in the case of the door 2 is a swing door drive. For the purpose, a spring similar to the spring 8 can also be arranged in the region of the sensor 15 between the levers 5, 6.

The compressive force of this additional spring is advantageously so strong that the sensor 15 is not actuated during the "normal" opening, so if there is no obstacle. Is there any obstacle, the lever 5 are moved in the opening direction in the direction of drag lever 6, compresses the additional spring and the sensor 15 is actuated. Thus, the swing-wing actuator 14 can detect when an obstacle obstructs the opening operation and, by way of example, shuts off the engine or to such a degree as to keep the door 2 in the current open position. If the obstacle falls away, the additional spring pushes the drag lever 6 in the opening direction until the sensor 15 is no longer actuated. This is the signal that the swing-wing actuator 14 can reopen the door, for example, or further.

The sensor 15 can be omitted.

Instead of switches, which are used here as sensors 7, 15, any type of sensor is possible, the approaching of the lever 5 to the

Drag lever 6 and its associated wall 17 can detect in the respective direction of movement of the door 2.

Instead of the door 2, the invention is applicable to any type of swing-wing.

The levers 5, 6 can be used instead of a linkage arm of a normal, Parallelarm- or sliding linkage, so that in the best case, the view of the door 2 does not or only insignificantly changes. Furthermore, the invention is universally applicable.

Instead of being arranged in the drag lever 6, the lever 5 may also be arranged outside the drag lever 6. In that case, the drag lever 6 may have a stop pointing in the direction of the lever 5, against which the spring 8 is supported in the example shown. In that case, the levers 5, 6 can otherwise be made very flat.

While the function as well as the features according to the invention have been described in detail and concretely with reference to the drawing figure, those skilled in the art a wide margin for modification of the power door closer, the door drive or the arrangement and for the replacement of features and elements, without departing from the scope of the present invention as defined solely by the appended claims.

LIST OF REFERENCE NUMBERS

1

door assembly

2

door

3

casing

4

wave

5

first lever

6

cam follower

7

force sensor

8th

feather

9

evaluation

10

damping element

11

anchoring point

12

hinge

13

storage means

14

Schwenkflügelbetätiger

15

sensor

16

role

17

wall

Claims (10)

Swing-wing actuator (14), • full a first elastic element and / or a first motor, wherein the first element is arranged by means of relaxing or the first motor by means of operating, an output shaft (4) of the swing-wing actuator (1) to rotate in a predetermined, first direction, in the presence of the first elastic element, a second motor arranged to further bias the first elastic element, a first lever (5) arranged non-rotatably on the output shaft (4), - a drag lever (6), the • is freely rotatably mounted at both ends, • At one end on a pivoting wing (2) is freely rotatably mounted and • protrudes at least with a portion (17) in the rotation range of the first lever (5) in a corresponding to the first direction pivoting direction of the first lever (5), and - A sensor (7, 15) which is adapted to detect an approach of the first lever (5) to the finger lever in the region of the intrusion of the finger lever (6) in the rotation range of the first lever (5), wherein at a detected approach through the sensor (7) In the presence of the first elastic element, the second motor is instructed to further bias the first elastic element Or otherwise instructing the first motor to turn the output shaft (4) in the first direction. The swing-wing actuator (14) according to claim 1, wherein, in the presence of the first elastic member, the second motor is further configured to rotate the output shaft (4) in a second direction opposite to the first direction, while further biasing the first elastic member. Swing-wing actuator (14) according to claim 1 or 2, wherein the drag lever (6) at the other end on the output shaft (4) about the same axis of rotation as the first lever (5) is freely rotatably mounted. A swing-wing actuator (14) according to claim 3, wherein the first motor is arranged to pivot, via the output shaft (4), the first lever (5) and the finger follower (6), the swing gate (2) in a direction corresponding to the second direction. A swing-wing actuator (14) as claimed in any one of the preceding claims, wherein, in the presence of the first elastic member, the first motor and the second motor are one and the same motor. A swing-wing actuator (14) according to any one of the preceding claims, wherein • The sensor (7, 15) comprises a switch, a potentiometer, a piezoelectric element and / or a proximity sensor and / or • A second elastic element (8) is provided, which in the region of the intrusion of the finger lever (6) in the rotation region of the first lever (5) between the drag lever (6) and the first lever (5) is arranged. A swing-wing actuator (14) according to any one of the preceding claims, further comprising means for outputting a signal from the sensor (7, 15). A swing-wing actuator (14) according to any one of the preceding claims, further comprising Control means (9) which are set up - Receive signals from the sensor (7) and in response to the received signals, cause the motor to further bias the first elastic element, and / or A damping element (10) parallel to the first elastic element. A swing-wing actuator (14) according to one of the preceding claims, further comprising memory means (13) which are characteristics between a movement exerted by a user on the swing-wing (2) and a drive of the second motor for at least further pre-tensioning the first elastic To provide elements. Door assembly (1) comprising A swing-wing actuator (14) according to one of the preceding claims and • a door (2) formed as a pivoting wing (2) according to claim 1.

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