EP0905345A2 - Actuating device for a sliding door using an electromotor. - Google Patents

Abstract

A sliding door, e.g. in a vehicle, is driven by an electric motor (4) mounted external to the door. The servo drive is activated by two sensors (10,11) which monitor the movement of the door handle. At least one end stop sensor (9) is activated by a stop (7) on the door when in the fully open position. Another, or the same, sensor monitors the fully closed position of the door. A simple control logic activates the servo drive from either end stop setting. No manual force is required to operate the door.

Description

The invention relates to an electromotive actuator according to the preamble of claim 1. In particular, an electromotive actuation of Motor vehicle sliding doors thought.

Anschieben" der Schiebetür, d.h. diese muß aus ihrer jeweiligen Endlage von Hand ein Stück bewegt werden, ehe mittels eines Bewegungssensors für diese manuell durchzuführende Türbewegung ein Betätigungsstromkreis für den Elektromotor im Sinne einer motorischen Fortsetzung der so eingeleiteten Türbewegung geschlossen wird. Wie in der Beschreibungseinleitung dieser Offenlegungsschrift unter Bezugnahme auf die nach dem gleichen Prinzip arbeitende Lösung nach der US-PS 5,434,487 ausgeführt, sind derartige Bewegungssensoren aber verhältnismäßig aufwendig; auch ist ihr Platzbedarf gerade in Fahrzeugen schwer zu erfüllen. Demgemäß wird in der Offenlegungsschrift eine andere, kompaktere Ausführung des Bewegungssensors vorgeschlagen; nach wie vor bleibt aber ein derartiger richtungssensitiver Bewegungssensor aufwendig und der Nachteil bestehen, daß zur Einleitung der elektromotorischen Türbewegung ein manuelles Anschieben der Türen in der gewünschten Richtung erforderlich ist.For this application, in addition to manual actuation, which requires a relatively high level of effort to open and close the door, electromotive actuation devices are known which at least considerably facilitate the opening and closing of the door and, by providing end position switches, also a complete opening or closing of the Ensure sliding door. However, the known solutions of this type have disadvantages. For example, the operation according to DE 196 39 974 A1 requires a manual one

Pushing "the sliding door, ie it must be moved a bit from its respective end position before an actuating circuit for the electric motor is closed by means of a movement sensor for this door movement to be carried out manually, in the sense of a motor continuation of the door movement initiated in this way. As in the introduction to this description Laid-open specification with reference to the solution working according to the same principle according to US Pat. No. 5,434,487, such motion sensors are comparatively complex and their space requirement is difficult to meet, particularly in vehicles. Accordingly, the published application proposes a different, more compact version of the motion sensor However, such a direction-sensitive motion sensor remains complex and the disadvantage is that manual pushing of the doors in the desired direction is required to initiate the electromotive door movement t.

This uncomfortable pushing of the door is not necessary with the generic Actuating device according to EP 0 122 556 B1. There the actuation circuit for the electric motor by an additional handle, namely the insertion and turning a key in a rotary contact, closed. Even if you do it for the purpose The movement of a key does not require the rotary contact or provided there Rotary switch replaced by a simple pressure contact, the need remains, an additional contact on the vehicle body (for a motor vehicle sliding door) to be provided and operated, and also to unlock the closed sliding door Door handle must be operated.

The invention is therefore based on the object of a generic electromotive Actuator while maintaining its advantages, in which the Operating effort is reduced.

The achievement of this task consists in the characteristic features of the main claim. The subclaims therefore describe a particularly advantageous one Embodiment of the invention, because a sliding door usually end stop are assigned, which are used here to form at least one door position sensor become. On the one hand, this provides the currentless one when the sliding door is in an end position Condition of the electric motor is safe, but is given by a door movement command reproduced signals of the first-mentioned sensor dubbed.

An embodiment of the invention for the case of a motor vehicle sliding door shows schematically the figure.

The sliding door 1 is drawn in its open state; you are in the Vehicle body 2 assigned to the sliding door section 3, from which they in their Opening movement initially by a substantially perpendicular to the plane of the Body 2 moving movement lifted out and then in the illustration of the figure is shifted to the left. This displacement movement takes place by means of the electric motor 4 Known and therefore not to be described type, which is arranged fixed to the body and which the electrical actuation circuit indicated at 5 with the control electronics 6 and is assigned to an on-board battery, not shown.

In the open end position of the sliding door 1 on which the figure is based, it is the one on it provided end position stop 7 by approaching or striking the body-side counter-stop 8 become effective. The end stop 7 has together with the sensor 9 the task of the actuating circuit 5 when the Interrupt opening movement of the sliding door 1 and accordingly the motor 4 de-energized close. This can be done by mechanically actuating a contact in the device 9 done by the end stop 7; the interruption of the actuation circuit 5 can, however, also take place at this point in a capacitive or inductive way.

This effect of the door position sensor 9 is, as it were, overplayed by sensors 10 and 11, the door handles and outer handles, not shown, because they are known in large numbers are assigned, which in turn when manually initiating an actuation command for a Door movement change their position. This change of position usually consists of Sliding pivoting movement in the door plane in the direction of the desired door movement. This change in position of the door handles at one Door movement command, which can be given from the inside or outside, is by means of the Sensors 10 and 11 are detected, wherein, as indicated by line 12, the signal transmission in turn can be done via the end stop 7. The signals from sensors 10 and 11 dub the signals from the door position sensor 9 so that when the sliding door 1 is open (i.e. the door position sensor 9 interrupts the actuation circuit 5 of the motor 4) when There is a door movement command (one of the door handles has changed its position) by the corresponding signal from one of the sensors 10 and 11, the actuating circuit 5 is closed and the electric motor 4 operates.

With the invention is accordingly a generic electromotive Actuator for a sliding door created while maintaining the favorable Properties of known generic actuators Ease of use significantly increased.

Claims (3)

Electromotive actuating device for a sliding door, in particular for a Motor vehicle, with inside and outside door handle, which when applying manual Door movement commands change their position, and only with one during Door movements closed actuation circuit for the electric motor, thereby characterized in that the actuating circuit (5) at least one Changes in position of the door handles and when they are present Actuating circuit (5) closing sensor (10, 11) contains. Device according to claim 1, characterized in that the electric motor (4) is arranged stationary outside the sliding door (1), the at least one Door limit stop (7) is assigned, which to form a door position sensor (9) is used, which is dubbed by the sensor (10, 11). Device according to claim 2, characterized in that the door end stop (7) for the transmission of signals from the sensor (10, 11) into the actuating circuit (5) serves.

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