1. Field of the Invention
The invention relates to a control device for carrying out an operating method for an electric window lifter for moving a rear pane.
2. Description of the Related Art
Electric window lifters are installed in vehicles and, in response to a control command, move the vehicle panes, in particular also a “rear pane”, into a desired position. The term rear pane is understood to mean a side pane in a vehicle, arranged behind what is referred to as the B pillar or adjoining a front pane associated with the driver's or passenger's door on the same side. When closed, a front edge of the rear pane adjoins the B pillar. The term vehicle “B pillar” is generally used to refer to the connecting pillar between the vehicle floor and the vehicle roof, approximately in the middle of a passenger compartment. Many coupes or cabriolets do not have a B pillar. In the case of such vehicles without a B pillar, the front edge of the rear pane adjoins the rear edge of a front pane, with a sealing lip generally being fitted on the front edge.
Especially in the case of cabrios and coupes, path-guided window lifters are therefore used. This is because the restriction on installation space due to the rear wheel housing makes it necessary to pivot the rear pane about the horizontal transverse direction of the vehicle (y direction) as said pane is lowered. Thus, the rear pane is not moved in a straight line but substantially on an s-shaped path. In order to implement such a pivoting operation of the window pane, a first and a second guide rail are provided, each running along a curved path, at least in sections. Also provided is a driver, which can be moved in a direction of movement which is substantially vertical (z direction) overall by means of the first and the second guide rail. The driver serves to connect the window pane to be moved to the window lifter. A window lifter of this kind is disclosed in German patent application DE 10 2004 048 017 A1, for example.
On the s-shaped path, the front edge of the rear pane approaches the B pillar or the front pane. As the front edge approaches the B pillar or the front pane, parts of the body or objects may be trapped.
It is the underlying object of the invention to provide a control device for carrying out an operating method for an electric window lifter in which, in the case of trapping, release from trapping is made possible.
With respect to the control device, this object is achieved, according to the invention, by means of the features of claim 1. According to this, an apparatus comprises a control device designed to operate (i) an electric rear window lifter motor for a rear pane and (ii) an electric front window lifter motor for a front pane in a motor vehicle. an operating method for an electric window lifter for moving a rear pane in a motor vehicle is provided, in which the rear pane is moved in a lowering direction along an approximately s-shaped path of movement. In this method, in the case of trapping the movement of the rear pane in the lowering direction is stopped and the rear pane is reversed, i.e. moved in the lifting direction.
The control device according to the invention is independent of the presence of an anti-trap protection system, which is generally activated during the movement of the vehicle pane into the closed position, and of the manner in which a case of trapping is detected. Thus, for example, a case of trapping can be recognized or detected on the basis of a change in the drive or motor current, in particular a rise in the current, or a change in the rotation speed, in particular a drop in the rotation speed, or by the evaluation of a sensor signal from a trap sensor.
According to an advantageous development, in the case of trapping the front side pane (front pane) on the same side as the rear pane, i.e. that on the same side of the vehicle (driver or passenger side), is held in position at the same time as the rear pane is reversed, and operation of a window lifter for the front pane is blocked. Holding and blocking the front pane prevents damage/injury occurring due to the rear pane being moved along a trapped object, especially part of the body.
An illustrative embodiment of the invention will be explained in greater detail below with reference to a drawing, in which:
In all the figures, corresponding parts and variables are provided with the same reference signs in all cases.
When the front or rear window lift button 7, 8 is actuated, the front or rear window lifter motor 5, 6 is operated by the control device 4. In this case, the front pane 2 or rear pane 3 is moved in accordance with a button command. During the movement of the rear pane 3, the rotation speed monitor 9 records the rotation speed n of the rear window lifter motor 6, and the control device 4 analyzes the rotation speed n in order to detect a case of trapping.
In this case, the front edge 10 and the rear edge 12 are oriented horizontally with respect to the z axis, which is based on the typical vehicle coordinate system. The adjoining position of the edges 10, 12 prevents relative wind and rain from penetrating into the passenger compartment.
In
In a second interval I2, the rear pane 3 remains in the closed position P0. In this case, the rotation speed n=0. In a third interval I3, the rear pane 3 is moved in the (−)z lowering direction. Owing to the system slack, the magnitude of the rotation speed n initially rises abruptly but then decreases as the window lifter mechanism between the rear window lifter motor 6 and the rear pane 3 comes into nonpositive engagement. As the rear pane 3 is moved in the (−)z lowering direction, the rear window lifter motor 6 moves in the opposite direction, this being illustrated by a negative rotation speed n.
At time t1, the case of trapping illustrated in
In a fifth interval I5, the rear pane 3 remains in position P1 to enable the trapped object 18 to be freed. Position P1 is advantageous since the gap 16 between the front edge 10 and the rear edge 12 is widened in the (+)z lifting direction. This simplifies the freeing of the trapped object 18. Once the object 18 has been freed, the rear pane 3 is moved into the open position P5 in a sixth interval I6.
Number | Date | Country | Kind |
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10 2010 005 676 | Jan 2010 | DE | national |
This is a divisional of U.S. patent application Ser. No. 13/005,912 filed on Jan. 13, 2011, the teachings of which are incorporated herein by reference in their entirety.
Number | Name | Date | Kind |
---|---|---|---|
3513374 | Koment | May 1970 | A |
3581174 | Hammer | May 1971 | A |
3670454 | Gebhard et al. | Jun 1972 | A |
3733532 | Hill | May 1973 | A |
3815005 | Berger | Jun 1974 | A |
3816963 | Hartmeyer et al. | Jun 1974 | A |
3965618 | Pickles | Jun 1976 | A |
4069616 | Doveinis | Jan 1978 | A |
4468596 | Kinzl et al. | Aug 1984 | A |
4621223 | Murakami et al. | Nov 1986 | A |
5459379 | Takeda et al. | Oct 1995 | A |
5872436 | Bergmann et al. | Feb 1999 | A |
5982124 | Wang | Nov 1999 | A |
6166508 | Kalb | Dec 2000 | A |
6426604 | Ito et al. | Jul 2002 | B1 |
6472836 | Uebelein et al. | Oct 2002 | B1 |
6701673 | Kessler et al. | Mar 2004 | B1 |
6710561 | Dobson | Mar 2004 | B2 |
6733065 | Schindler et al. | May 2004 | B2 |
6773053 | Richter et al. | Aug 2004 | B2 |
8033052 | Kraus et al. | Oct 2011 | B2 |
20020014871 | Sugawara | Feb 2002 | A1 |
20030116994 | Richtor et al. | Jun 2003 | A1 |
20090249697 | Nabetani et al. | Oct 2009 | A1 |
20090295556 | Inoue et al. | Dec 2009 | A1 |
20100319268 | Bizard | Dec 2010 | A1 |
20110138693 | Bozzo et al. | Jun 2011 | A1 |
20110225894 | Ewald et al. | Sep 2011 | A1 |
20110265381 | Guarnizo | Nov 2011 | A1 |
20120090240 | Zellmer | Apr 2012 | A1 |
Number | Date | Country |
---|---|---|
102004048017 | Mar 2006 | DE |
Number | Date | Country | |
---|---|---|---|
20140245664 A1 | Sep 2014 | US |
Number | Date | Country | |
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Parent | 13005912 | Jan 2011 | US |
Child | 14273783 | US |