DE4231984A1 - Electromechanical swing door operating drive - with data processor coupled to motor control ensuring controlled door movement according to stored programme - Google Patents

Abstract

The door operating drive uses an electromechanical motor (1) coupled to an angle gearing (3) via a clutch (6). An energy storage spring provides the energy for closing the door. The motor is operated in a generator mode during the closure movement. A mechanical clutch is employed. A data processor is coupled to a motor control (2) for regulating the motor current and maintaining optimum operation of the door according to a stored programme by monitoring the detected door position. ADVANTAGE - Ensures controlled door movement to prevent accidents.

Description

The invention relates to an electromechanical revolving door drive as described in DE 41 24 282.3-23. These electromechanical swing door drives are in the Usually stimulated by a pulse generator, the requested to bring the closed door leaf into an open position. After an adjustable hold-open time, this door wing must gel then return to the closed position. This can either automatically or through in a Spei stored energy, for example spring energy, can be achieved.

A swing door drive of the aforementioned type is from US-Pa tentschrift 1,684,704. Through the external off Solution with a panic bar, the circuit becomes the The motor is closed and the door leaf opens. When opening, a spiral spring which attacks the drive axis of the door, the energy saved for the subsequent closing process of the door.

Another electromechanical drive for swivel flights of doors is disclosed in DE-OS 32 02 930. Here too is connected via a motor in conjunction with a Winkelge drive a door wing of a swing door driven. Exactly if a spiral spring is attached to the drive axle brings, which in turn the energy for closing the door applies.  

Furthermore, an electromechanical swing leaf drive for Swing wing of doors or the like from DE 41 00 335 A1 known. This drive includes one Coil spring, which in a preferred embodiment has been attached to the electric drive motor. The drive axis of the drive motor goes to a tarpaulin transmission, which with the emerging final drive a linkage to be attached to the door leaf manufactures. The drive motor is controlled by a Electronics carried out, for example, by one Position transmitter the opening angle of the door wing mitge gets divided, during the closing process the motor winding short-circuited, which causes a generator effect and thus an additional braking effect for the door leaf testifies.

The invention has for its object an electro mechanical swing door drive according to the main application DE 41 24 282.3 to create, in which also the closing phase of Door wing does not run out uncontrolled, because by that Closing the door leaf may be used for the ver There is no danger to the circles.

According to the invention the object is achieved in that a Data processing unit for optimal operation adequate security for the user in the context of a Sequence program takes care that depending on the shoot direction of the gear motor, d. H. either when opening operation or when closing the door leaf, a Re Motor current is carried out. When opening Operation must be the force to open the door of the door Motor drive plus the energy to be applied for the Energy storage, are generated. While with the accessories the door drive the motor drive is switched off and through a program command the engine into a generator area drive is switched. This is done simultaneously  a measuring and control device the closing speed of the door wing monitored, which means that with an on the higher the speed of the door leaf increases nerator current is generated and thus a stronger braking of the door wing would enter. However, is the Bremswir If the door wing is too strong, the measuring and control device a ver adapted to the circumstances changed short circuit of the drive motor performed. This can be done, for example, by a temporary break Short circuit of the drive motor happen.

Even if the engine control unit fails, i. H. the An is in a de-energized state, is a controlled Ab guaranteed in the closed position of the door leaf, because in the gear motor circuit, a diode which is in passage direction is switched, is used. This diode be works according to the engine used and Diode type typical voltage drop.

An inexpensive solution is proposed as a position transmitter gene that a rotation at the axis exit of the angular gear potentiometer, which is the motor control unit avoids the position of the door leaf. In out design of the idea of the invention, however also on the geared motor between the motor and An incremental encoder can be attached to the clutch measures the engine revolutions, which is a measure of the opening represent the angle of the door leaf.

How an electromechanical swing door operator works runs, for example, in the form that an opening impulse starts the gear motor for the door opening. The gear motor drives the door with an adjustable Ge speed and at the same time adjustable rotation moment until it is in the range of possibly ge desired adjustable opening damping comes. The beginning The opening damping can, for example, via an end  switch or also reported via a position transmitter the. The door must be clear in the area of the opening damping but are braked softly and with a reduced Ge drive into the final opening position, wherein the opening through a connected to the drive Stop is limited. This stop is also over the Position encoder adjustable. Remains in the open position then the drive with reduced torque for the rest of the set timeout switched on. This can the torque should be just so great that the preloaded Closing spring and certain additional loads such as B. Wind loads can still be kept straight. After the expiry of the adjustable open time, the drive switches automatically table off. The door will be over that at that moment energy stored in the closing spring begins to increase shut down. At the same time, however, by reversing the Direction of rotation via the engine control unit previously as Mo gate operated drive in a controlled regulated Generator operation switched. This generator operation is designed so that the generated generator current measured and with a comparator, which determines a corresponds to th torque, is compared. Not one to achieve constant damping of generator operation len, for example, an interruption and thus open lifting the generator operation, which is carried out in at this point in time a termination or reduction of Braking would mean. This can be done in time be controlled that a smooth closing of the door panel is guaranteed. The door comes in the area of approx. 7-5 ° opening angle, so the damping can be complete be canceled so that the ge in the closing spring residual energy safely stored the door in the closing position tion brings. This makes it possible to also open the door Use fire compartments. After closing In the door, the drive is automatically switched on by the generator switched back to engine operation and can by  an opening pulse to be triggered again an opening of the door leaf. However, it is also possible that the electromechanical swing door drive also from the closing movement and that with everyone Opening angle, brake quickly but gently and into the Reverse opening direction. This will correspond According to the sequence program, the preselected sequence diagram such as who activated.

The modular electromechanical swing door drive includes in addition to the electronic engine control unit also a data processing unit that works for the optimal Operation of the revolving door. In this data processing a sequential program is processed, which the set or programmed and transmitted Forward values for regulation and control to the drive tet. This control system can be used for both Single drive, d. H. a door with a wing, as well a door with two leaves can be used. For measurement the door leaf position can be, for example, at the off pedal axis of the gearbox attached rotary potentiometer act, or also between the engine and the clutch attached incremental encoder its use fin the. Connect between the geared motor and the the bevel gear can preferably be a mechanical ela tical but not switchable coupling can be attached which ensures that some noise reduction caused by the gear motor, not by the ge entire drive continues to propagate.

The invention will be described in the following with further advantageous Details based on a schematically represented Aus management example explained in more detail. In the drawings shows

Fig. 1 electromechanical swing door operator with potentio meter,

Fig. 2 electromechanical swing door drive with incremental encoder.

The geared motor ( 1 ), which preferably consists of a direct current motor with a flanged gear, is regulated and controlled via the motor control unit ( 2 ), which is connected to the geared motor ( 1 ) via the connection ( 8 ). The motor axis ( 13 ) is connected to a mechanical, but elastic, but not switchable coupling ( 6 ). The coupling flange ( 7 ), on the other hand, is connected to the axle outlet of an angular gear ( 3 ). The angular gear ( 3 ) reverses the direction of rotation. This makes it possible to construct the electro-mechanical swing door drive as a slim, narrow unit. The energy store ( 5 ), which can be, for example, a spiral spring, is located at the axis outlet ( 4 ) of the angular gear ( 3 ) which is offset by 90 °. So much energy is stored in this energy storage device by the opening movement of the door leaf that after the door leaf has been opened it can be closed again solely by the spring force. At the same time, there is a position sensor ( 9 ) in the form of a potentiometer on the axis exit ( 4 ), which reports the opening position and thus the opening angle of the door wing via the connection ( 10 ) to the engine control unit. This actual value of the door leaf position is compared in the engine control unit ( 2 ) with the actual specification supplied via the program specification ( 11 ) and the connection ( 12 ) and processed accordingly in the engine control unit. The result is passed on via the connection ( 8 ) to the geared motor ( 1 ).

In Fig. 2, a modified embodiment is Darge shows where an incremental encoder ( 14 ) is placed between the geared motor ( 1 ) and the clutch ( 6 ) on the motor axis ( 13 ). This incremental encoder measures the revolutions of the motor, which are a measure of the opening angle of the door wing and reports this information via the connection ( 15 ) to the motor control unit ( 2 ), where the information is processed with the other data present.

The electromechanical swing door drive is triggered by an opening impulse and brings the door leaf into the open position. After the specified Offenhal tezeit the closing process of the door is vorgenom men that the motor control unit ( 2 ) on the position sensor ( 9 ) or ( 14 ) recognizes that the door wants to close again. In connection with the program specification ( 11 ), the geared motor is operated in generator mode in this case, ie it is not generally short-circuited for the entire closing time of the door leaf, but instead a controlled process of the generator current is carried out here. The regulation of the generator current ensures that the closing process of the door leaf runs smoothly and in a controlled manner.

Reference numerals

1 gear motor
2 engine control unit
3 angular gear
4 axis exit
5 energy stores
6 clutch
7 flange
8 connection
9 position transmitter
10 connection
11 Program specification
12 connection
13 motor axis
14 incremental encoder
15 connection

Claims (6)

1.Electro-mechanical swing door drive for a at least one-leaf door, the door leaf of which can be moved by an electromechanical motor acting in the opening direction and between the electromechanical motor and the gearbox there is a clutch, the gearbox being preferably an angular gearbox, the outgoing axis exit of which End of the swivel arm of a linkage is coupled and the other end is rotatably supported by a second swivel arm, the second end of which is connected to the door leaf and a spring element is present as an energy store for closing the door leaf, the door opening angle being measured via a position transmitter, characterized by the following features:

• a) that the clutch ( 6 ) between the geared motor ( 1 ) and the bevel gear ( 3 ) is a mechanical, elastic non-switchable clutch.
• b) that a data processing unit for an optimal operation with sufficient security for the user takes care within the framework of a sequence program, means being available which forward the values determined according to the sequence program by the data processing unit to the engine control unit ( 2 ).
• c) that the motor control unit ( 2 ) controls the motor current.

2. Electromechanical swing door drive according to claim 1, characterized in that the motor control unit ( 2 ) in conjunction with the sequence program during the automatic closing operation operates the geared motor ( 1 ) in regulated generator mode, the braking effect of the door leaf generated by the generator mode being regulated. 3. Electromechanical swing door drive according to claim 1, characterized in that the motor control unit ( 2 ) in conjunction with the sequence program during the automatic closing operation operates the geared motor ( 1 ) in regulated generator operation, the braking effect of the door leaf generated by the generator operation can be interrupted. 4. Electromechanical swing door drive according to one or more of the preceding claims, characterized in that in the event of a failure of the motor control unit ( 2 ) the door is then also transferred into the closed position in a controlled manner by a diode in the transmission direction in the transmission motor circuit. 5. Electromechanical swing door drive according to claims 1 to 4, characterized in that a position sensor ( 9 ) at the axis exit ( 4 ) of the angular gear ( 3 ), a potentiometer is used. 6. Electromechanical swing door drive according to claims 1 to 4, characterized in that the gear motor revs on the clutch ( 6 ) are measured by an incremental encoder ( 14 ).