DE4341153A1 - Drive system for sliding garage door - Google Patents

Abstract

The drive system for a sliding garage door has a cable (5) to operate the rolling trolley, secured to it by two cable nipples (12a). The cable (5) is moved in two directions by an electro-motor (1) fitted with a gearing (2) and a drive roller (3), where the cable (5) is wound round it to give a winding or unwinding action when the garage door (20) is opened or closed. The cable (5) within the trolley casing is passed over at least three leading rollers (6,7a,7b) and over at least one trailing roller (8), while the cable (5) is passed in the guide rail (17) outside the casing. The drive roller (3) is of polyamide, polyoxymethylene, polysulphone, polyester or a polyimide. Also claimed is a control system with an operating switch fitted with two contacts. A leading limit switch has at least one opening contact and a similar trailing limit switch has an opening contact. The motor (1) has a reverse system. The circuit has a fine fuse and a power fuse.

Description

The invention relates to an electric drive device for sliding doors, especially for the door leaf one swing-out, horizontally sliding outer sliding door for motor vehicles, preferably for people carriers and Minibuses, according to the preamble of the main claim as well an electrical control for this.

Motorized sliding door drive devices for Motor vehicles are e.g. B. from DE 39 19 338 C2, at the one arranged in an outside of the car body Guided rails with curved end piece Trolley is articulated to the door wing and by means of an endless belt, for example a toothed belt, from is driven by an electric motor. Here is a print or absorbing connecting element articulated with the band and connected to the roller carriage, this Connecting element in the closed position of the sliding door Dead center position.

The known drive devices have the disadvantage on that their structure is complex, and that before all their drive means (chains or timing belts) too much Take up space so that the standard guide rails usually can not be used, which is expensive Interventions in the bodywork. Moreover, yours Functionality does not satisfy in every respect all in terms of pinching safety.

The invention seeks to remedy this.  

The invention has for its object to provide a sliding door Drive device and control under extensive Use of large series parts in a constructive to create simple and reliable design that can also be easily retrofitted.

This object is achieved by the features of patent claims 1 and 18 solved. Advantageous embodiments of the invention are the subject of claims 2 to 17 and 19 to 40.

According to the invention the object is achieved in that extensive use of serial parts mechanically driven sliding door (guide rail, trolley, Locking mechanism etc.) a drive device is created, which is a rope as a traction device for the Sliding door operated. When using a high-strength material for the rope (e.g. high tensile steel alloy) Diameter can be chosen relatively small, so that too Guide rails with a relatively small clear width used and the holes in the car body for the rope-in exit are relatively small can. This allows you to retrofit the inventive device expensive welding and Avoid painting the car body.

A special rope drive roller causes the rope each time the cable drive motor is actuated by it wound up and down at the same time, and so one constant and smooth drive of the sliding door guaranteed, whereby the noise development compared to keeps a chain drive very limited.

One in a preferred embodiment in the Rope drive roller integrated, sensitively adjustable  Slip clutch serves as an effective pinch protection for automotive Passengers and also allows in the event of a failure of the motor drive device in connection with a Planetary gear a mechanical actuation of the sliding door.

Furthermore, the special design of the electrical control a long life of the electrical Components as well as diverse signaling and Security devices up to an automatic one Closing the sliding door when the Motor vehicle. This is done by extensive Use of high-volume automotive components next to one low-cost manufacture allows easy maintenance.

The invention will now be described with reference to the drawings explained.

It shows:

Figure 1 is a plan view of the drive device according to the invention for a motor vehicle sliding door.

Fig. 2 is a side view of the sliding door drive device;

Fig. 3 is a partial sectional view of the first embodiment of a drive roller with integrated sliding clutch;

Figure 4 is a plan view of the first embodiment of the drive roller from the counter bearing side.

Fig. 5 is a partial section of the second embodiment of the drive roller with an integrated slip coupling;

Fig. 6 is a plan view of the second embodiment of the drive roller;

Fig. 7 shows a section of a running in a guide rail roller carriage with rope nipples;

Fig. 8 is a side view of the roller carriage with the rope nipples; such as

Fig. 9 is a circuit diagram of the electrical control of the drive device.

As can be seen from FIGS. 1 and 2, the drive device for a sliding door 20 essentially comprises a motor 1 with a gear 2 and a drive roller 3 , a rope 5 with a rope tensioner 4 , a plurality of rope rollers 6 or a plastic sanding block, at least two front rope Deflection rollers 7 a and b, at least one rear rope deflection roller 8 , at least two rope nipples 12 a and b and an unlocking device 10 for a sliding door lock 11 .

The remaining components of a conventional mechanically operated sliding door 20 , in particular the roller carriage 13 attached to the sliding door 20 via a support arm 18 , which is equipped with at least two guide rollers 14 a and b and at least one support roller 15 and is attached in one to the lateral outer wall of the motor vehicle , one-sided towards the door cutout running guide rail 17 can be taken over essentially unchanged.

A permanently excited large-series motor shunt motor with a relatively small diameter is preferably used as the drive source 1 , which due to the limited space behind the standard side wall cladding 16 is preferably equipped with a compact planetary gear 2 , for example the type GR 63 × 55/12 V / approx. 100 W / diameter: 6 cm with two-stage planetary gear PLG 52.0 (diameter: 5 cm) (translation 28.12: 1) from Dunker, Bonndorf. The engine 1 is to be attached centrally to an existing side strut under the side panel 16 of the motor vehicle in question.

A first embodiment of the drive roller 3 ( FIGS. 3 and 4) comprises a hollow cylinder with an external thread 31 , two cable openings 32 , 33 and an inner groove 36 . The drive roller 3 is preferably made of a light metal alloy or a flame-retardant plastic with high abrasion resistance and a permanent temperature resistance of <80 ° C, for example polyamide, polyoxymethylene, polysulfone, polyether or polyimide.

The length of the drive roller 3 or the number of threads of the external thread 31 depends on the width of the sliding door 20 and the diameter of the rope 5th

The rope 5 is preferably made of galvanized steel, particularly preferably of a stainless steel, of sufficient tensile strength and has a diameter between 1 and 5 mm, preferably 3 mm.

With a width of the relevant sliding door 20 of, for example, 1 m, the drive roller 3 comprises approximately 11 threads for a wire diameter of 3 mm with a length of approximately 6 cm and a diameter of approximately 6.5 cm.

The rope 5 is threaded from the outside through the opening 32 of the drive roller 3 according to the first embodiment into the interior thereof, guided in the cavity 34 coaxially to the laterally flattened hub 21 in an inner groove 36 of the drive roller 3 , guided through the opening 33 to the outside and on the external thread 31 is wound up in such a way that when the sliding door 20 is opened or closed it simultaneously winds up and unwinds from the drive roller 3 .

As can be seen from FIGS. 3 and 4, the slip clutch integrated in the drive roller 3 in a preferred embodiment comprises a coaxially flattened hub 21 in the form of a hollow cylinder made of steel, brass or a light metal alloy, which is attached to the gear shaft 30 by means of a grub screw 29 is releasably attached. The hub 21 has at its end opposite the gear shaft 30 a fine external thread 35 onto which an adjusting nut, preferably a lock nut, 25 is screwed for the purpose of fastening the drive roller 3 . A counter bearing support 28 , which is equipped with a receiving pin 27 and a ball bearing 26 , serves as the counter bearing for the hub 21 . An annular friction disk 22 is placed on the end of the hub 21 facing the transmission 2 , then the drive roller 3 is pushed on, followed by a further friction disk 23 and an annular spring disk 24 . By acting on the adjusting nut 25 with a defined torque, the response of the slip clutch can be set exactly.

In a second embodiment ( FIGS. 5 and 6), the drive roller 3 has, instead of the cable openings 32 , 33 and the inner groove 36 of the first embodiment, a tangential cable opening 37 at its axial end sections with a clearance adapted to the diameter of the cable 5 Widen up. In these cable openings 37 , the respective ends of the two-part cable 5 are each fixed with a cable screw 39 , for which radial openings 38 with an internal thread are provided perpendicular to the cable openings 37 on the axial end sections of the drive roller 3 . The two sections of the cable 5 are wound on the drive roller 3 in such a way that they wind up or unwind from the motor 1 when the latter is actuated. In comparison to the first embodiment, this second embodiment has the advantage of a more cost-effective production, since the inner groove 36 and the coaxial flattening of the hub 21 to form the cavity 34 can be dispensed with. In addition, the rope 5 can be applied more easily and quickly to the drive roller 3 or replaced in the event of a repair. A light metal alloy is preferably used as the material for the drive roller 3 according to the second embodiment.

The setting of the slip clutch is preferably carried out in such a way that when a person is pinched they remain unharmed and that if the motor 1 fails, the sliding door 20 can be opened or closed easily by hand.

After leaving the drive roller 3, the rope 5 is guided over at least two front rope deflection rollers 7 a, b, the attachment of which has to take place in the vicinity of the door cutout, as can be seen from FIG. 1. The position of the cable deflection rollers 7 a, b is to be matched to the respective motor vehicle type, since this is of crucial importance for overcoming the resistance of the standard door seal 9 when opening or closing the sliding door 20 .

In the standard, on a support arm 18 of the sliding door 20 mounted roller carriage 13, the at least two guide rollers 14 are equipped with cable nipples 12 for receiving the cable 5, wherein the shaft of the guide rollers 14 to the thickness of the cable nipple to cut 12, as shown in FIGS. 7 and 8 can be seen. The other standard components of the roller carriage 13 , such as. B. the idler 15 can be taken over unchanged.

The rope 5 is then guided over at least one rope pulley, preferably three, 6a to c, or over a plastic sanding block.

The cable 5 then runs in the standard cranked guide rail 17 to the rear cable deflection roller 8 , which is attached to the inside of the car body rear (viewed in the direction of travel).

As shown in Fig. 1 and 2, the tightening is the cable 5 is a cable tensioner 4, for example a tension spring or, preferably attached to a pivotable and lockable arm pulley, 6 d, which is preferably mounted between the rear deflecting roller 8 and the drive roller 3 .

For the rope pulleys 6 a to 6 d, 7 a, b and 8 ball bearing rollers made of a plastic with high abrasion resistance and a minimum temperature resistance of <80 ° C, preferably made of polyamide, are preferably used.

A near the front guide roller 7 a to be attached front limit switch 103 , which is covered together with the front guide roller 7 a by a protective hood 19 , causes the engine 1 to be switched off as soon as the sliding door 20 is in the "fully closed" status. Accordingly, a rear limit switch 104 , which is to be attached in the area of the rear deflection roller 8 or in the vicinity of the upper end of the drive roller 3, switches off the motor 1 as soon as the sliding door 20 is in the "fully open" status, cf. Fig. 1 and 2.

An unlocking device 10 , for. B. a standard electric unlocking servomotor for central locking, under the inner lining of the sliding door 20 serves to release the standard locking 11 when the motor 1 is activated (see FIGS. 1 and 9). The use of the standard lock 11 saves the need for a separate TÜV approval when retrofitting the device according to the invention.

As can be seen from Fig. 9, the electrical control for the engine 1 in the simplest embodiment comprises an actuating switch 102 to be mounted in the dashboard of the motor vehicle with two switch positions (sliding door opening / closing), a front limit switch 103 , a rear limit switch 104 , one Reversing device for the motor 1 , a microfuse 101 and a power fuse 110 .

A reversing device for reversing the direction of rotation of the motor 1 is in principle a so-called electromagnetic reversing relay with two coils and four working contacts, two relays with at least two working contacts each, or four relays with at least one working contact each. Load relays can be used.

Obviously, due to a lack of relevant demand, electromagnetic relays with multiple contacts for 12 V DC are not currently being mass-produced, so that for reasons of problem-free supply of spare parts and low manufacturing costs, preferably four large-scale automotive relays 106 to 109 , each with one working contact with one on the Starting or continuous current of the engine 1 abge tuned load capacity can be used.

In order to avoid premature wear of the relay contacts, the motor 1, for example, an RC element comprising a capacitor 111 and a resistor 112 must be connected in parallel. For a motor power of, for example, 100 W at 12 V DC voltage, a capacitance of approximately 10 μF with a dielectric strength of at least approximately 200 V AC voltage is to be provided for the capacitor 111 , while a value of approximately 10 Ω / 10 is preferably used for the resistor 112 W is to be selected. As an alternative or in addition to the RC element, a surge arrester 113 , for example a varistor or a gas discharge element, can be connected in parallel to the motor 1 , in the latter case the nominal voltage of the capacitor 111 (and thus its volume and price) corresponding to the breakdown voltage of the surge arrester 113 can be reduced.

When using a motor 1 with a nominal output of approx. 100 W, inrush currents of <50 A occur, which can lead to a heavy load on the relay contacts and thus to a significant reduction in their service life. In this case, particularly, it is recommended, for the purpose of limiting the inrush current to the motor 1 is a current limiter 117, preferably one occasion thermistor (NTC) with a matched to the rated current of the motor 1 load current upstream. If this is provided in the line 124 between the relay 109 and the motor connection line 125 (starting hot conductor 117 a), the motor 1 responds with a delay when the sliding door 20 is opened , which gives the unlocking device 10 a welcome advance, and thus a sudden load on the locking device 11 with the inevitable signs of wear.

Alternatively, a thermistor 117 c can be provided in the feed line 127 of the coil of the relay 109 , which leads to a delayed tightening of the working contact thereof. Another (but more complex) option is to use a time relay with adjustable delay time for relay 109 .

In a preferred embodiment, in addition to the starting hot conductor 117 a in line 124, a second starting hot conductor 117 b is provided in line 121 between relay 106 and motor supply line 126 . This has the advantage that when the motor 1 is reversed rapidly (before the thermistor 117 a, if this is alternatively provided in the line 125 or 126 , may have reached ambient temperature again), the thermistor 117 b can take effect.

When the motor 1 is switched off , voltage peaks occur which can reach several 100 V in 12 V DC operation and which, particularly when the motor 1 is reversed from full running (without prior standstill), can assume high values, which can damage the motor winding insulation, could lead to premature erosion of the relay contacts and high-frequency interference. These undesirable effects can be avoided by the RC element 111 , 112 , preferably in connection with the surge arrester 113 . It is harmless that the motor 1 still runs a fraction of a second due to the residual current circulating through the RC element 111 ', 112 and the motor winding, since the slip clutch integrated in the drive roller 3 responds in some cases. These measures make it possible to avoid a complex motor brake and complex motor control with time locks (forced breaks) between motor forward and reverse.

A rocker switch with a neutral center position or two separate pushbutton switches is used as the actuating switch 102 , the switching states ("sliding door open or close") preferably by two indicator lights 105 a and b (light bulbs or light-emitting diodes (LED) with series resistor), which are also in the Switch 102 can be integrated, displayed. If, in a preferred embodiment, the positive poles of the indicator lights 105 a, b are each connected directly to the connection terminals of the motor 1 , they can additionally indicate the correct function of the relays 106 to 109 .

In parallel to the switch 102 , a key switch 116 , which is to be attached to the outside of the car body and is directly connected to the fuse 110 , can be connected in order to allow the sliding door 20 to be actuated even without first getting on the motor vehicle.

As limit switches (limit switches, position switches) 103 and 104 , NC contacts are used, preferably in miniature design with a low current carrying capacity, since they only have to be designed for the coil current of relays 106 to 109 .

In a preferred embodiment, the front limit switch 103 has a further break contact, or a further limit switch or a door contact switch 114 of the break type is provided at the location of the limit switch 103 , which has a sliding door status indicator 115 to be fitted in the dashboard, which has one pole is connected directly to the fuse 101 , connects to ground as long as the sliding door 20 is not in the "fully closed" status.

Alternatively, a sliding door status detector 115 with an operating current that is below the response current of relays 106 and 107 , for example an LED with a series resistor, can be connected in parallel with the actuating switch 102 between the microfuse 101 and the inner limit switch 103 , which creates an additional contact in the limit switch 103 or the door contact switch 114 is unnecessary.

Illuminated indicators, preferably with a flashing function for increased attention, or signaling devices are used as sliding door status indicators 115 in order to prevent the motor vehicle from being set in motion before the sliding door 20 is fully closed.

In a preferred embodiment, an automatic door closing system is provided in the form of a vehicle movement sensor 118 , which, connected in parallel with the switches 102 and 116 , activates the "closing relays" 106 , 107 via the limit switch 103 when the motor vehicle starts to move, before the sliding door 20 is completely closed, ie before the switch 103 has been opened.

The vehicle motion sensor 118 may be embodied, for example, by a mechanical sensor that responds to the speed of the motor vehicle engine or the speed of the speedometer shaft, or a wheel sensor. As an alternative or in combination with the mechanical one, an electrical sensor, for example a Zener diode in combination with a Schmitt trigger, which responds to the voltage increase in the on-board electrical system when the speed of the motor vehicle engine increases.

For the miniature fuse 101 , via which the switch 102 is preferably to be connected to the ignition terminal 15 of the motor vehicle, a type <5 A is sufficient, while the power fuse 110 is to be designed for the rated motor current, which in a preferred embodiment is designed as a reclosable circuit breaker.

In a preferred embodiment of the slip clutch is in addition to the mechanical Einklemmsicherung in the form of an electric door-Einklemmsicherung 119, 120 in the form of 20 and at this itself mounted people sensor 119 and a Einklemmsicherungsrelais 120, whose NC (rest) in the door opening of the sliding contact is preferably provided in the line 128 between the power fuse 110 and the feed lines 129 , 130 to the relays 106 , 109 . The personal sensor 119 can consist, for example, of a light barrier, a capacitive proximity sensor or a pressure or switching strip (rubber hose with internal electrodes or pressure sensor at the closed hose ends).

The mode of operation of the electric drive control is explained in more detail below with reference to FIGS. 1, 2 and 9.

open door

When the switch 102 or 116 is actuated, the unlocking device 10 is activated, as a result of which the locking 11 of the sliding door 20 is released. At the same time, a control current flows to the ground via the limit switch 104 , which is always closed when the sliding door 20 is not fully open, and via the coils of the "break contacts" 108 and 109 connected in parallel. After the resulting closing of the working contacts of the same, the motor 1 is connected directly to the accumulator 100 via the fuse 110 , as a result of which the starting thermistor 117 a connected upstream of the motor 1 begins to heat up. As the temperature increases, its resistance decreases and the current flowing through it is sufficient to set the motor 1 in rotation. Thereupon, this sets the sliding door 20 in motion by means of the cable 5 via the roller carriage 13 , as a result of which the front limit switch 103 (as well as the status indicator or

Door contact switch 114 ) are transferred to the "closed" status. If the switches 102 and 116 are held in the "open" position, the motor 1 opens the sliding door 20 until the rear limit switch 104 is opened, whereupon the motor 1 is switched off by the relays 108 and 109 .

close the door

When the "closed position" of the switches 102 and 116 is actuated, a control current flows via the front limit switch 103 , which is always closed when the sliding door 20 is not completely closed, via the coils of the "closing relay" 106 and 107 . After the resulting closing of the working contacts thereof, the motor 1 is reversed and the sliding door 20 is moved until the front limit switch 103 is actuated by the completely closed sliding door 20 , whereby the motor 1 is switched off by the relays 106 and 107 . If the closing process is interrupted prematurely, the preferably provided sliding door status indicator 115 reminds the driver to completely close the sliding door 20 before the motor vehicle is shut off. If this does not take place, the preferably provided automatic door closing comes into action.

The components 1 , 2 , 3 , 7 a, b, 8 , 21 to 36 , 103 , 104 , 106 to 115 and 117 a, b of the device according to the invention are preferably preassembled on a common support 40 made of steel or light metal profiles, so that The steps in the assembly of the drive device essentially on the screwing of the carrier 40 by means of a fastening screw 41 , the introduction of the unlocking servomotor 10 , the cable nipple 12 a and b, the assembly of the protective hood 19 and the drilling of two holes for the extraction or Limit insertion of the rope 5 into the car body.

Reference list

1 = motor
2 = gear
3 = drive roller
4 = rope tensioner
5 = rope
6 a to d = rope pulley or plastic sanding block
7 a, b = front pulley
8 = rear pulley
9 = door seal
10 = unlocking device
11 = locking
12 a, b = rope nipple
13 = roller carriage
14 a, b = guide rollers
15 = idler
16 = side wall cladding
17 = guide rail
18 = support arm
19 = protective hood
20 = sliding door
21 = hub
22 = friction disc
23 = friction disc
24 = spring washer
25 = adjusting nut
26 = ball bearing
27 = locating pin
28 = counter bearing bracket
29 = grub screw
30 = gear shaft
31 = external thread of the drive roller
32 = opening for rope
33 = opening for rope
34 = cavity
35 = external thread of the hub
36 = inner groove
37 = rope opening
38 = screw opening
39 = rope screw
40 = component carrier
41 = fastening screw
100 = accumulator
101 = microfuse
102 = operating switch
103 = front limit switch
104 = rear limit switch
105 a, b = indicator lights
106 = relay
107 = relay
108 = relay
109 = relay
110 = performance assurance
111 = capacitor
112 = resistance
113 = surge arrester
114 = limit switch (status indicator)
115 = sliding door status indicator
116 = key switch
117 a, b, c = inrush current limiter
118 Vehicle motion sensor
119 = person sensor
120 = anti-pinch relay
121 to 131 = line

Claims (40)

1.Drive device for a sliding door, in particular for a swing-out, horizontally displaceable outer sliding door ( 20 ) for motor vehicles, which has a guide member in the form of a roller carriage ( 13 ) attached to the sliding door ( 20 ) by means of a support arm ( 18 ), which has at least two Guide rollers ( 14 a, 14 b) and at least one support roller ( 15 ) is equipped and is guided by means of a guide rail ( 17 ) attached to the lateral outer wall of the car body and cranked on one side toward the door cutout, characterized in that

• - the drive of the roller carriage (13) by a rope (5) which, by means of two cable nipple (12 a, b) is coupled to the roller carriage (13); and
• - The rope ( 5 ) can be driven in both directions by an electric motor ( 1 ) equipped with a gear ( 2 ) and a drive roller ( 3 );
• - The cable ( 5 ) is wound on the drive roller ( 3 ) in such a way that it simultaneously winds up and unwinds from the drive roller ( 3 ) when the sliding door ( 20 ) is opened or closed; and
• - The rope ( 5 ) is deflected within the car body via at least three front pulleys ( 6 , 7 a, b) and at least one rear pulley ( 8 ), while the cable ( 5 ) is guided outside the car body in the guide rail ( 17 ) is.

2. Drive device according to claim 1, characterized in that the drive roller ( 3 ) comprises an integrated slip clutch with at least the following components:

• - A hub ( 21 ) in the form of a hollow cylinder, which is releasably attached at one end by means of grub screws ( 29 ) to the shaft ( 30 ) of the transmission ( 2 ) and at the opposite end a fine external thread ( 35 ) for one Has adjusting nut ( 25 ), which serves to secure the drive roller ( 3 ) plugged onto the hub ( 21 ) and to adjust the slip clutch;
• - At least one friction disc ( 22 ) between the hub ( 21 ) and the drive roller ( 3 ) and at least one friction disc ( 23 ) between the drive roller ( 3 ) and the adjusting nut ( 25 ); such as
• - At least one spring washer ( 24 ) between the friction washer ( 23 ) and the adjusting nut ( 25 ).

3. Drive device according to claim 1 or 2, characterized in that the drive roller ( 3 ) is made of a light metal alloy or a flame-retardant plastic with high abrasion resistance and a permanent temperature resistance <80 ° C. 4. Drive device according to one of claims 1 to 3, characterized in that the drive roller ( 3 ) consists of a polyamide, a polyoxymethylene, a polysulfone, a polyether or a polyimide. 5. Drive device according to one of claims 1 to 4, characterized in that the drive roller ( 3 ) on its radial circumferential surface in the vicinity of their opposite axial ends two openings ( 32 , 33 ) with one adapted to the diameter of the cable ( 5 ) Diameter through which the cable ( 5 ) for winding on the drive roller ( 3 ) in a coaxial cavity ( 34 ) between the same and the hub ( 21 ) is inserted into an inner groove ( 36 ) of the drive roller ( 3 ), wherein the cable ( 5 ) is wound on the external thread ( 31 ) of the drive roller ( 3 ) in such a way that when the motor ( 1 ) is actuated, regardless of its direction of rotation, it simultaneously winds up and unwinds from the drive roller ( 3 ). 6. Drive device according to one of claims 1 to 4, characterized in that the drive roller ( 3 ) in the vicinity of their opposite axial ends, two tangential cable openings ( 37 ) with a to the diameter of the cable ( 5 ) adapted internal width and two for this has vertical radial openings ( 38 ) with internal thread for receiving a rope screw ( 39 ) each for fixing the ends of the rope ( 5 ). 7. Drive device according to one of claims 1 to 6, characterized in that the hub ( 21 ) is mounted in a Ge counter bearing, which consists of a counter bearing bracket ( 28 ), a receiving pin ( 27 ) and a ball bearing ( 26 ). 8. Drive device according to one of claims 1 to 7, characterized in that the rope ( 5 ) is made of steel and has a diameter of at least 3 mm. 9. Drive device according to one of claims 1 to 8, characterized in that the rope ( 5 ) with a rope tensioner ( 4 ) is provided. 10. Drive device according to claim 9, characterized in that the cable tensioner ( 4 ) consists of a tension spring with a sufficient to tighten the rope ( 5 ) sufficient spring constant. 11. Drive device according to claim 9, characterized in that the cable tensioner ( 4 ) comprises a cable pulley ( 6 d) attached to a pivotable and lockable arm. 12. Drive device according to one of claims 1 to 11, characterized in that at least two pulleys ( 7 a, 7 b) are provided in the vicinity of the door cutout on the inside of the car body. 13. Drive device according to one of claims 1 to 12, characterized in that the cable nipples ( 12 a, b) on the guide rollers ( 14 ) of the roller carriage ( 13 ) are attached. 14. Drive device according to one of claims 1 to 13, characterized in that the rope ( 5 ) in the vicinity of the door cutout in the guide rail ( 17 ) is guided over at least one rope pulley ( 6 a) or a plastic sanding block. 15. Drive device according to one of claims 1 to 14, characterized in that a protective hood ( 19 ) for covering the front cable deflection roller ( 7 a) and a front limit switch ( 103 ) is provided. 16. Drive device according to one of claims 1 to 15, characterized in that for the rope pulleys ( 6 a - d, 7 a, b, 8 ) ball bearing rollers made of a plastic with high abrasion resistance and a temperature resistance <80 ° C are used. 17. Drive device according to one of claims 1 to 16, characterized in that at least the components ( 1 , 2 '3, 7a, b, 8, 21 to 36 , 103, 104, 106 to 115, 117 a, b) on one common carrier ( 40 ) are summarized. 18. Electrical control for the drive device according to one of claims 1 to 17, characterized in that it comprises at least the following components:

• - An actuation switch ( 102 ) with two working contacts;
• - a front limit switch ( 103 ) with at least one break contact;
• - a rear limit switch ( 104 ) with an NC contact;
• - A reversing device for the motor ( 1 );
• - A microfuse ( 101 ) and
• - a performance assurance ( 110 ).

19. Electrical control according to claim 18, characterized characterized in that the reversing device from a Reversing relay with two coils and at least four Work contacts exist. 20. Electrical control according to claim 18, characterized characterized in that the reversing device from two Relay with at least two normally open contacts. 21. Electrical control according to claim 18, characterized in that the reversing device consists of four relays ( 106 to 109 ), each with at least one normally open contact. 22. Electrical control according to claim 18, characterized characterized in that the reversing device from four electronic load relay. 23. Electrical control according to one of claims 18 to 22, characterized in that two indicator lights ( 105 a, b) are provided for the operating states "open sliding door" or "close sliding door". 24. Electrical control according to one of claims 18 to 23, characterized in that the front limit switch ( 103 ) has a further break contact or that a further limit switch or a door contact switch ( 114 ) is provided at the same location as the limit switch ( 103 ), to operate a sliding door status indicator ( 115 ) as long as the sliding door ( 20 ) is not in the "fully closed" status. 25. Electrical control according to one of claims 18 to 23, characterized in that the sliding door status indicator ( 115 ) via a line ( 131 ) to the front limit switch ( 103 ) and to the microfuse ( 101 ) is connected, the operating current of the Status detector ( 115 ) is selected such that the current flowing through the reversing device via the front limit switch ( 103 ) generates a voltage drop which is below the response voltage thereof. 26. Electrical fuse according to claim 24 or 25, characterized in that the sliding door status indicator ( 115 ) comprises a light-emitting diode (LED) with a series resistor. 27. Electrical control according to one of claims 24 to 26, characterized in that the sliding door status detector ( 115 ) comprises a flashing function. 28. Electrical control according to one of claims 24 to 27, characterized in that the sliding door status detector ( 115 ) comprises a signal generator. 29. Electrical control according to one of claims 24 to 28, characterized in that an automatic door closure is provided in the form of a vehicle movement sensor ( 118 ) which activates the "closing relay" ( 106 , 107 ) as soon as the motor vehicle starts to move, before the limit switch ( 103 ) has been opened. 30. Electrical control according to claim 29, characterized in that the vehicle motion sensor ( 118 ) comprises a mechanical sensor responsive to the speed of the motor vehicle engine. 31. Electrical control according to claim 29, characterized in that the vehicle motion sensor ( 118 ) comprises an electrical sensor responsive to the increase in voltage in the electrical system when the speed of the motor vehicle engine is increased. 32. Electrical control according to claim 29, characterized in that the vehicle motion sensor ( 118 ) consists of a combination of a mechanical and an electrical sensor. 33. Electrical control according to one of claims 18 to 32, characterized in that the motor ( 1 ) an RC element ( 111 , 112 ) and / or a surge arrester ( 113 ) is connected in parallel. 34. Electrical control according to one of claims 18 to 33, characterized in that the motor ( 1 ) at least one inrush current limiter ( 117 a) is connected upstream. 35. Electrical control according to claim 34, characterized in that the motor ( 1 ) two inrush current limiters ( 117 a, b) are connected upstream. 36. Electrical control according to one of claims 18 to 33, characterized in that the relay ( 109 ) is designed delayed. 37. Electrical control according to one of claims 18 to 36, characterized in that the actuating switch ( 102 ) is connected in parallel with a key switch ( 116 ) to be attached to the outside of the motor vehicle car body, the positive pole of which is connected directly to the power fuse ( 110 ). 38. Electrical control according to one of claims 18 to 37, characterized in that an electrical door anti-pinch device ( 119 ) is provided. 39. Electrical control according to claim 38, characterized in that the pinch safety device ( 119 , 120 ) consists of a in the door cutout of the sliding door ( 20 ) or attached to this self-sensor ( 119 ) and a pinch safety relay ( 120 ), the break contact of which Line ( 128 ) between the power fuse ( 110 ) and the feed lines ( 129 , 130 ) to the relay ( 106 , 109 ) is provided. 40. Electrical control according to claim 39, characterized in that the person sensor ( 119 ) consists of a light barrier, a capacitive proximity sensor or a pressure or switching bar.