DE102004031631B4 - Window lifter and method for securing a motor vehicle against burglary - Google Patents

Abstract

Windows with
A first drive (104) and a second drive (106),
- means (120, 122, 124) for controlling the first and second drive,
wherein the first drive and the second drive for the positive introduction of a driving force (108) via tooth profiles (130) lateral edge regions (112, 114) of a window are formed and wherein the tooth profile forms a structural unit with a sealing lip (132).

Description

The The invention relates to a window regulator, a motor vehicle door and a Window for a motor vehicle door.

in the State of the art usual Cable window lifters with single or double guide have a relatively large number mechanical components for the power transmission between the drive motor and the window. For example the driving force over various springs, coils, rollers, deflectors and ropes transferred to the window. These mechanical transmission chain is due to the many mechanical components and the associated Frictional losses disadvantageous. These friction losses amount to conventional window lifts about 50% of the applied traversing force.

From the US 2003/0196383 A1 a window regulator mechanism is known in which the usual cable drive is replaced by a rack and pinion drive. For this purpose, two opposing racks extending in the vertical direction are arranged in the middle region of a motor vehicle door. This drive mechanism has the disadvantage that it is relatively heavy, requires a relatively large space and thus limits the storage space of the side compartments of the door. A particular disadvantage here is that the engine is moved in this prior art power window mechanism.

From the DE 198 46 658 A1 Furthermore, a device for guiding and sealing a side window of a motor vehicle is known. Here, each guided side edge of the movable disc is assigned at least one drive element, whereby the disc can be driven on both sides in the region of the guided side edge. Each of the guided side edges is associated with an electric motor and the side edges are moved simultaneously by the synchronized electric motors, so that a tilting or tilting of the disc is effectively excluded.

The publication 197 03 720 A1 describes a plastic window for motor vehicle doors and the integration of elements of a window regulator in the plastic disc. The plastic disc with a vertically formed along the disc edge toothed rack profile may be formed. In this rack profile engages a drive pinion of a drive motor, which is arranged stationary on the vehicle door. When lowering the disc in the vehicle door is done directly on the engaging in the rack profile drive pinion.

Further, the DE 39 41 651 A1 relates to a drive device which receives a so-called active self-locking, that is, monitors the end of movement of a driven assembly and automatically turns on, when this movement end state is changed by external influences to restore the end of movement by a corresponding driving force.

The DE 101 41 859 A1 describes a window position detecting and anti-jamming system for a vehicle door device having a windowpane adjustably positionable by a reversible motor. This system includes a filling device disposed adjacent to the window pane and configured to detect the position of the window pane relative to the window frame. Further, this system includes a controller that compares window position signals with predetermined values to determine if there is an obstacle between a windowpane and the windowframe.

One common disadvantage of known from the prior art window regulators is a relatively high mechanical friction loss and a high Installation effort due to a variety of used mechanical Components. The invention is based on the object, a improved windows and an improved motor vehicle door and a improved window for a motor vehicle door to accomplish.

The The object underlying the invention is with the features the independent one claims 1, 10 or 14 solved. Preferred developments of the invention are specified in the dependent claims.

According to the invention is a Windows provided, which has at least two drives to the Initiate a upload Zanhprofile lateral edge portions of a window are formed. The two drives are controlled by a control unit and the tooth profiles form a structural together with a sealing lip Unit. The control device At the same time it can also perform regulatory functions. The control device may, for example for one improved speed control of the travel speed of the window in front of the end positions. For example, before Reaching an end position reduces the travel speed, thus the impact force is reduced. This spares the mechanics and in particular the seals; Furthermore, the customer thereby becomes one higher Value of the motor vehicle mediated.

The invention makes it possible to provide a window, which has a high compared to the prior art spring stiffness in the mechanical Chain between the drives and the window has. In particular, the two drives can be designed as direct drives. This has the advantage that various window lifter functions can be implemented by software, since an immediate control of the window position can be exercised via the drives. In particular, such improved burglary protection can be realized.

Becomes in a break-in attempt, the window slightly pressed down from the outside, so the corresponding position change is sensed. The control device controls then the two drives to initiate a driving force into the window against the sensed change in position at. Due to the high spring stiffness of the mechanical system this can be done with a very high reaction rate, what a slump by pressing down the window practically impossible power.

One example for Another function to be implemented in software technology is a Anti-pinch protection for the window regulator.

One Another advantage of the window according to the invention is that this can be mounted with significantly less effort. by virtue of the reduced number of mechanical components decreases accordingly the number of assembly steps and thus the installation costs and the for the Installation required time.

One Another advantage is that due to the introduction of the driving force on the lateral edge areas of the window of the available as storage space in the door Space can be increased. In particular, due to the displacement of the drive elements in the Border areas of the door, can be on the inside of the door an interior trim part with a larger storage space can be arranged.

To a preferred embodiment of the Invention, the two drives are each designed as electric motors. Preferably, the electric motors each have a Hall sensor for sensing the window position. Alternatively, stepper motors used; These have the advantage of having no position sensors required are.

To a further preferred embodiment the invention, the control of the drives of the window lift takes place based on the sensed window position and based on a User input. The user input can be made via conventional window regulator controls, such as single or multi-stage latch or rocker switch done. at a user input "window close "the drives as long as driven until the closed position of the window is sensed.

To a further preferred embodiment the invention is the control of the window regulator with a communication network connected. at The communication network may be, for example, a LIN or act a CAN network. For example, the user input via such a communication network be transferred to the control of the window regulator. Furthermore, due to the networking part functions the power window control of others Control devices, so-called Electronic Control Units (ECU).

To a further preferred embodiment The invention is by the control of the window lifter burglary protection realized. For this purpose, when locked motor vehicle constantly the Window position monitored. If, for example, due to the Hall sensors of the drives output position signals a change in the window position is detected, the drives are against the change in position controlled to completely close the window again. by virtue of the high mechanical spring stiffness of the mechanical system This can be done with a very short reaction time. This burglary protection can also be activated when the vehicle is unlocked, e.g. if that Vehicle stands at an intersection to prevent anyone enters the stationary vehicle.

To a preferred embodiment of Invention, the driving force is transmitted positively. The window has this at its lateral edge regions in each case a tooth profile, in which a corresponding drive element, for example a gear, one of the drives can intervene.

To a further preferred embodiment the invention are the tooth profiles made of plastic, for example made of polyurethane (PU) or polyoxymethylene (POM).

For example can be a tooth profile made of PU to the lateral edge areas of the window to be poured on. The corresponding procedure is from the state of Technique known per se and is called PU casting process or referred to as PU bonding.

alternative the tooth profile can be produced by plastic injection molding. The thus obtained racks are at the lateral edge areas of the window, for example glued or attached by means of PU bonding. For example, the tooth profile at the window edge or on a the window surfaces appropriate.

According to the invention are on the seitli chen edge regions of the window each attached sealing lips. These are also preferably made of plastic and can represent a structural unit with the tooth profiles. Preferably, the sealing lips extend in a U-shaped channel. This embodiment has the advantage that the assembly steps required for the final assembly of a motor vehicle can be further reduced. Preferably, the window is supplied with the molded or glued tooth profiles and sealing lips and the U-shaped channel in which run the sealing lips to the production line to be used there in a motor vehicle door.

Ausführungsbeispile The invention will be explained in more detail with reference to the drawing. It demonstrate:

1 a schematic block diagram of a motor vehicle door with an embodiment of the window regulator according to the invention,

2 a detailed view of a lateral edge region of a window according to the invention,

3 a perspective view of an embodiment of a window according to the invention with positive drive elements,

4 a flowchart of an embodiment of the method according to the invention for protection against burglary.

The 1 shows a schematic view of a Fordere motor vehicle door 100 with an embodiment of the window regulator according to the invention. Below the door parapet 102 For example, near the so-called A and B pillars of the motor vehicle drives 104 and 106 arranged. In the case of a rear vehicle door, the arrangement is correspondingly close to the C and B pillars.

The drives 104 and 106 serve to initiate a resultant driving force 108 to open or close the window 110 , The window 110 has lateral borders 112 and 114 about which the driving force 108 from the drives 104 and 106 is preferably introduced positively.

Also on the edge areas 112 and 114 are sensors 116 respectively. 118 arranged one each from the position of the window 110 give dependent signal. For example, it is the sensors 116 and 118 around Hall sensors working in the drives 104 respectively. 106 are integrated. For example, when the drive shaft of the relevant drive rotates, a sensor emits a pulse at a specific angle. Alternatively or additionally, another sensor for position determination may be used, such as the evaluation of the so-called back EMF of the electric motors, an optical sensor or the like.

Below the door parapet 102 there is also a control device 120 with a processor 122 to run a computer program 124 , Preferably, the controller is 120 with a communication network 126 , coupled to a LIN or CAN bus, for example.

At the motor vehicle door 100 For example, there is a control panel in the armrest area 128 with various controls through which a user can make a user input to call a specific window regulator function. Common window functions are "window open" and "window closed".

The control panel 128 can either be directly with the control device 120 be coupled or over the network 126 , like in the 1 shown with dashed lines.

In operation evaluates the program 124 those from the sensors 116 and 118 supplied information regarding the position of the window 110 as well as from the control panel 128 supplied user inputs and controls the drives 104 and 106 accordingly. Receive the program 124 For example, the user input "window open", so it controls the drives 104 and 106 as long as in the opening direction of the window 110 on, until the sensors 116 and 118 show that window 110 is completely open.

When locked motor vehicle, the program 124 Furthermore, realize a burglary protection. The program monitors this 124 constantly from the sensors 116 and 118 supplied signals. Once a position change of the window 110 is detected without a corresponding user input, controls the program 124 the drives 104 and or 106 in the opposite direction to completely close the window again. Due to the direct power transmission from the drives 104 and 106 on the window 110 This can be done with a very short reaction time.

The 2 shows a partial perspective view of an embodiment of the window according to the invention. Elements of 2 , the elements of 1 are denoted by the same reference numerals.

The window 110 has in its edge area 114 a tooth profile 130 , The tooth profile 130 is on the side edge of the window 110 glued or cast on. Preferably, the tooth profile 130 made of plastic, preferably made of PU or POM. The tooth profile 130 serves for the positive introduction of a part of the driving force 108 through the drive 106 (see. 1 ). For example, the drive has 106 a gear, which in the tooth profile 130 engages the driving force of the drive 106 transferred to.

At the edge area 114 of the window 110 there is also a sealing lip 132 , which is preferably made of plastic and to the edge area 114 is poured or glued on. Preferably, the tooth profile 130 and the sealing lip 132 a structural unit and are produced in a PU casting or as a plastic injection molded part.

The border area 114 of the window 110 runs in a U-channel 134 , on the inside of the sealing lip 132 is applied to seal the window. At the height of the drive 106 is the U-channel 134 interrupted to an intervention of the gear of the drive 106 in the tooth profile 130 to enable.

The 3 shows a further perspective view of an embodiment of the window according to the invention. Elements of 3 , the elements of 1 and 2 are again identified with the same reference numerals. According to the embodiment of the 3 are on both edge areas 112 and 114 one tooth profile each 130 and a sealing lip 132 arranged within a U-channel 134 run. In the tooth profiles 130 grip drive elements 136 . 138 the drives 104 respectively. 106 a positive fit to the window 110 to adjust.

The 4 shows a flow chart of an embodiment of the method according to the invention for burglar alarm. In the step 200 the vehicle is locked. Subsequently, in the step 202 constantly senses and monitors the window position. Once in the step 204 it is determined that the window position has changed when the vehicle is locked, in the step 206 the window is driven in the opposite direction to close it completely again.

100

Motor vehicle door

102

windowsill

104

drive

106

drive

108

driving force

110

window

112

border area

114

border area

116

sensor

118

sensor

120

control device

122

processor

124

computer program

126

Communication network

128

Control panel

130

tooth profile

132

sealing lip

134

U-channel

136

driving element

138

driving element

Claims (16)

Windows with - a first drive ( 104 ) and a second drive ( 106 ), - means ( 120 . 122 . 124 ) for driving the first and second drive, wherein the first drive and the second drive for the positive introduction of a driving force ( 108 ) via tooth profiles ( 130 ) lateral edge areas ( 112 . 114 ) are formed of a window and wherein the tooth profile is a structural unit with a sealing lip ( 132 ). Window regulator according to claim 1, wherein the first and second drives are each an electric motor. Window regulator according to claim 1 or 2, with means ( 116 . 118 . 120 . 122 . 124 ) for detecting a position of the window. Window lifter according to one of the preceding claims 1, 2 or 3, wherein at least one of the first and second drives a Hall sensor for has the position determination of the window. Window regulator according to claim 3 or 4, wherein the Means for controlling the first and the second drive for driving in dependence of the sensed position of the window and depending on a user input are formed. Window regulator according to claim 5, wherein the means for driving the first and the second drive for coupling to a power communication network ( 126 ) are formed. Window regulator according to one of the preceding claims, at the means for driving the first and the second drive to monitor the Window position and for controlling the first and / or second Drive against a detected change in position of the window are formed. Window regulator according to one of the preceding claims, at formed the first and second drives for the positive introduction of the driving forces are. A window regulator according to claim 8, wherein the first and the second drive each comprise a toothed wheel ( 136 . 138 ) to initiate the driving force. Motor vehicle door with a window according to one of the preceding claims 1 to 9, and a window ( 110 ), at the lateral edge regions ( 112 . 114 ) each have a tooth profile ( 130 ) for a positive introduction of a driving force ( 108 ) is formed, which forms a structural unit with a sealing lip. Motor vehicle door according to claim 10, wherein the tooth profile consists essentially of plastic consists. Motor vehicle door according to claim 11, wherein the plastic is polyurethane (PU) or polyoxymethylene (POM). Motor vehicle door according to claim 12, having a U-shaped channel ( 134 ) within which the sealing lips run. Window for a motor vehicle door, each with a tooth profile ( 130 ) and a sealing lip ( 132 ) at the lateral margins ( 112 . 114 ), wherein the tooth profile and the sealing lip form a structural unit. A window according to claim 14, wherein the tooth profile consists essentially of plastic. Window according to claim 14 or 15, having a U-shaped channel ( 134 ) for receiving the sealing lip.