EP1072749B1 - Electromechanical drive for rotary column moving the leaf of a swinging door on a vehicle, especially a mass-transit vehicle. - Google Patents

Abstract

The operating drive has an electric motor (1) coupled to a pivot column for the vehicle door via an intermediate drive coupling, with an emergency operating device allowing the drive coupling between the motor and the pivot column to be released. The drive coupling uses a cogwheel drive (2) with a drive spline (2.2) engaging a cog segment of the pivot column and a driven cogwheel (2.1) cooperating with a drive spline (1.2) of the electric motor, which is disengaged by a pivot movement of the carrier plate (4) on which the motor is mounted.

Description

The invention relates to an electromechanical Drive for a rotary column for moving a door leaf an inside or outside swinging door a vehicle, especially a public one Transportation with a turnstile over a Reduction gear driving electric motor and an emergency release device for decoupling the drive connection between the electric motor and Rotating column.

Such drives are known and, for example in EP 0217228 B1 and DE 197 24 439 A1 described.

In the known drive devices drives the Electric motor, the rotary column via a worm gear by connecting the motor shaft to the worm shaft is while the worm wheel with the at the Rotary column connected output shaft of the worm gear is coupled. The worm gear has an emergency release device for decoupling with respect to rotation between output shaft and worm wheel on. This is between the Output shaft and the coaxial with this lying Worm wheel arranged a disengageable clutch.

The invention is based on the object, an electromechanical Drive with the beginning and in the generic term of the claim 1 specified characteristics Easy to build in construction and assembly is and in particular a very simple one and functionally safe construction of the emergency release device allowed.

The solution of this task is inventively with the features of the characterizing part of the claim 1. Advantageous developments of the invention are described in the dependent claims.

The basic idea of the invention is the Drive the rotary column through the motor directly over to effect a spur gear whose output pinion in a arranged on the rotary column toothed segment engages, and in the case of emergency release to cause necessary decoupling that motor with worm gear and Helical gear so pivoted against each other be that the corresponding output pinion of the Worm gear and the drive gear of the Move apart the spur gear and thereby one Decoupling is effected.

The spur gear is then free running and not more inhibited by the electric motor. This will be the Rotary column also freewheeling and the vehicle door can be opened manually.

The construction can be done easily and is extremely reliable.

The following is with reference to the accompanying drawings an embodiment of an electromechanical Drive according to the invention explained in more detail.

Fig. 1 in einer Teilansicht aus dem Fahrzeuginneren eine zweiflüglige Innenschwenktür an einem Fahrzeug eines öffentlichen Verkehrsmittels;

Fig. 2 in einer gegenüber Fig. 1 vergrößerten Seitenansicht den elektromechanischen Antrieb für einen Türflügel der Fahrzeugtür nach Fig. 1;

Fig. 3 den Elektroantrieb nach Fig. 2 in Draufsicht.

In the drawings show:

Figure 1 is a partial view of the vehicle interior a two-leaf interior swing door on a vehicle of a public transport.

Fig. 2 in a comparison with Figure 1 enlarged side view of the electromechanical drive for a door leaf of the vehicle door of Fig. 1.

Fig. 3 shows the electric drive of FIG. 2 in plan view.

Fig. 1 shows a schematic representation of a vehicle door a public transport with two Door leaves TF1 and TF2, which are known per se Each way over a vertical rotating column DS1 or DS2 are opened and closed. about the door leaves TF1 and TF2 are on the door frame on drive carriers TR1 and TR2 each electromechanical Drives EA1 and EA2 for driving the rotary columns DS1 and DS2 arranged.

In this case, for example, the drive of the rotary column DS1 via a arranged on the rotary column Toothed segment 3, in which the output pinion 2.2 one explained below, to the electromechanical Drive EA1 belonging spur gear intervenes.

Between the two electromechanical drives EA1 and EA2 is a NH NH arranged in further described below via a pneumatic system an emergency unlocking device controls for decoupling the drive connection between the electromechanical Drives EA1 or EA2 and the rotary columns DS1 or DS2.

In the following, with reference to FIGS. 2 and 3 of the electromechanical Drive EA1 and the belonging to him Emergency release device explained.

The electromechanical drive EA1 has a Electric motor 1 with integrated worm gear 1.1, which are arranged together on a pivot plate 4 are. The pivot plate 4 is above a fixed Base plate 5. It is about the pivot axis 4.1 swiveling and has to limit the pivoting movement a slot 4.2, in which a on the Base plate 5 fastened stop pin 5.1 engages.

Below the base plate 5 is another, as Spur gear 2 trained gear arranged. The output pinion 2.2 of the spur gear 2 engages in the already described, not shown in Fig. 2 Gear segment 3 of the rotary column DS1 (Fig. 1). In the drive wheel 2.1 of the spur gear 2 engages the output pinion 1.2 of integrated into the engine 1 Worm gear 1.1 a. The arrangement is here so that when pivoting the pivot plate 4 to the Pivot axis 4.1 in the direction of arrow d, in which the Output pinion 1.2 of the worm gear 1.1 mitverschwenkt is, this output pinion 1.2 at the Place EK (Fig. 2) from the drive gear 2.1 of Helical gear 2 disengages and thereby decoupling between the electric motor 1 with the worm gear 1.1 and the spur gear 2 causes.

The swivel plate 4 can therefore from a drive position, in which the output pinion 1.2 in the Output gear 2.1 engages in a decoupling position be pivoted in the output pinion 1.2 and the driven gear 2.1 moved apart are.

The pivoting movement of the pivot plate 4 is through causes an unlocking mechanism which a connected to a pneumatic circuit, not shown and actuated by the emergency valve NH (FIG. 1) Pneumatic cylinder 6 has. The piston rod 6.1 of the pneumatic cylinder 6 is via a lever linkage with a pivot point 4.3 of the pivot plate. 4 connected, a predetermined distance to the Has pivot point 4.1. The lever linkage is as Toggle mechanism formed with a two-armed Lever 8, which is pivotable about a pivot point 8.3 and its one lever arm 8.1 hinged to the piston rod 6.1 is connected while the other lever arm 8.2 on the knee joint 9.1 with a one-armed Lever 9 is connected, the fulcrum 9.2 am Link point 4.3 of the pivot plate 4 is located. How out Fig. 3 read, the arrangement is such that at Retraction of the piston of the pneumatic cylinder 6, i. when retracting the piston rod 6.1 in the direction of the arrow a, over the two-armed lever 8, the knee joint 9.1 in Arrow direction b led to the outside and thereby on the one-armed lever 9 of the pivot plate 4 a Pivoting movement is impressed in the direction of arrow d. Piston and piston rod 6.1 of the pneumatic cylinder 6 be retracted by a tension spring 7 in the direction of the Position applied to the vented State of the pneumatic cylinder 6 corresponds. These Position corresponds to that at the same time already described decoupling position of the pivot plate 4, so that upon actuation of the emergency valve NH and a corresponding venting of the pneumatic cylinder 6 due to the process described above the swivel plate 4 automatically in the Entkoppelungsstellung emotional. A reset in the drive position the swivel plate 4 takes place by venting the Pneumatic cylinder 6, extension of the piston rod 6.1 opposite to arrow a and returning the knee joint 9.1 against the direction of arrow b in a position in which the two-armed lever 8 at a stop 10 is applied, through which the drive position of Swivel plate 4 is limited. As also in Fig. 3 read, is the from the levers 8 and 9 existing toggle mechanism in the illustrated in Fig. 3 Antiebstellung the pivot plate 4 in one Over-center position. That means it's not possible is, by violent operation of the door wings and corresponding exertion of a torque over the Rotary column 1 on the electromechanical drive EA1 a pivoting of the pivot plate 4 in the arrow direction d to reach the decoupling position. This is prevented because due to the Übertotpunktlage the Knee joint 9.1 not in direction of arrow b to the outside can be performed as long as the pneumatic cylinder. 6 ventilated. A manual opening of the door is therefore only possible if previously operated the emergency valve NH and thereby the pneumatic cylinder 6 was vented.

To indicate the locked or decoupled state the drive connection between the electric motor 1 and rotary column DS1, for example by means of signal lamps serves a control switch 11, not to a shown connected electrical circuit is and whose switching contact is in the direction of arrow c to the two-armed lever 8 applies.

The electromechanical drive EA2 is analogous to electromechanical EA1 and its emergency release device is from the same emergency valve NH off pressed.

Claims (7)

1. An electromechanical drive for a rotary column for moving a door panel of a door, which is pivotal inwards or outwards, of a vehicle, in particular a public transport vehicle, having an electric motor which drives the rotary column by way of a gear and an emergency unlocking device for uncoupling the drive connection between the electric motor and the rotary column, characterised in that the gear is constructed as a spur gear (2) having a first driven pinion (2.2) which engages in a toothed segment (3) arranged on the rotary column (DS1), and a driving toothed wheel (2.1) in which a second driven pinion (1.2) driven by the electric motor (1) engages, with the uncoupling being effected by pushing apart the second driven pinion (1.2) and the driving toothed wheel (2.1) of the step-down gear (2), in that the motor (1) and the second driven pinion (1.2) are mounted on a pivotal plate (4) which may be pivoted by means of an unlocking mechanism (6-9) out of a drive position into an uncoupled position.
2. An electromechanical drive according to Claim 1, characterised in that the second driven pinion (1.2) is connected to the electric motor (1) by way of a worm gear (1.1) mounted on the pivotal plate (4).
3. An electromechanical drive according to Claim 1 or 2, characterised in that the unlocking mechanism has a pneumatic cylinder (6) which is attached to a pneumatic circuit and may be actuated by way of an emergency valve (NH) and whereof the piston is connected by way of a lever-type linkage (8-9) to an articulation point (4.3) on the pivotal plate (4) which is at a predetermined spacing from the pivot point (4.1) of the pivotal plate (4).
4. An electromechanical drive according to Claim 3, characterised in that the pneumatic cylinder (6) is charged with air in the drive position of the pivotal plate (4) and is discharged in its uncoupled position, with the piston of the pneumatic cylinder (6) being acted upon by the force of a spring (7) in the direction (a) towards the retracted position in the discharged state.
5. An electromechanical drive according to Claims 3 and 4, characterised in that the lever-type linkage is constructed as a toggle lever mechanism and has a two-armed lever (8), on the one lever arm (8.1) whereof the piston rod (6.1) of the pneumatic cylinder (6) acts, while the other lever arm (8.2) is connected by way of the toggle joint (9.1) to one end of a one-armed lever (9) whereof the other end (9.2) is connected in articulated manner to the articulation point (4.3) of the pivotal plate (4) such that when the piston is retracted the toggle joint (9.1) performs a movement (b) in opposition to the direction of movement of the piston and a torque is applied to the pivotal plate (4) by way of the one-armed lever (9).
6. An electromechanical drive according to Claim 5, characterised in that, when the pneumatic cylinder (6) is in the state charged with air, with the piston rod (6.1) extended, the toggle lever mechanism (8-9) is in a top dead centre position established by a stop (10).
7. An electromechanical drive according to Claim 5 or 6, characterised in that an electrical control switch which may be actuated by the toggle lever mechanism (8-9) triggers an electrical switching circuit for generating an uncoupling and/or locking signal.

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