DE19861100B4 - Spindle or worm drive for adjustment devices in motor vehicles - Google Patents

Abstract

Spindle or worm drive for adjustment devices in motor vehicles, in particular for seat adjustment devices, window lifters and sunroofs, with a fixed spindle or a fixed toothed rack, which is attached to a first of two parts that can be adjusted relative to one another, with a gear mechanism that can be adjusted on the second of the items that can be adjusted relative to one another Parts is stored, and with a gear housing for mounting the gear, which consists of at least two housing plates which can be fixed to one another, the housing plates (71; 72; 71a; 71b; 72a; 72b; 77a; 77b; 78; 79) being fixable to one another by means of plug connections are designed as load-bearing connection points that absorb the transmission forces, at which the housing plates (71; 72; 71a; 71b; 72a; 72b; 77a; 77b; 78; 79) are held together, characterized in that the plug connections are designed as clearance fits and the position of the housing plates (71; 72; 71a; 71b; 72a; 72b; 77a; 7 7b; 78; 79) is fixed in the area of the plug connections by plastic deformation of the material.

Description

The invention relates to a spindle or worm drive for Adjustment devices in motor vehicles according to the preamble of Claim 1.

From the DE-OS 17 55 740 a spindle drive for an adjusting device on a motor vehicle seat is known. The motor vehicle seat is fastened here on two parallel slide rails which run on guide rails arranged on the vehicle floor. A threaded spindle is arranged parallel to each slide rail and connected to it in a rotationally fixed manner.

In addition to the fixed guide rails and with these a gear block is mounted, the one spindle nut arranged on the threaded spindle and one with the latter intermeshing drive worm receives. The drive screws of each gear block are included a common drive motor in connection. The gear block is there of two parts that are screwed together.

If the drive motor is actuated, the Drive screws twisted the spindle nuts. Because the lead screw is rotatably arranged, the threaded spindle and connected with this vehicle seat relative to the transmission block and thus shifted to the vehicle floor.

This solution has the disadvantage that the gear block is expensive to manufacture. The gear block itself is too big, so that this to Example cannot be placed within the rails.

From the DE 40 21 669 A1 a housing for an electrical auxiliary drive is known which has two half-shells which are held together by means of elastic latching elements.

In the US 4,802,374 A describes a device for adjusting a motor vehicle part, in particular a seat part, relative to a fixed part, which comprises a spindle extending in the adjustment direction and a gear housing in which gear elements interacting with the spindle, in particular a drive shaft provided with worm teeth and a spindle nut Worm gear teeth are stored. The housing comprises a stable, essentially rigidly designed receptacle, which serves to mount the gear elements, and a housing cover, which is provided with clip elements and is made of plastic, which can be plugged onto the receptacle and can be fixed to the receptacle by the clip elements.

From the DE 43 24 913 C1 a housing for an electric actuator is known which consists of a housing shell and a housing cover which are connected to one another via elastic snap elements and which are supported on one another via additional support points.

The object of the invention is in it, a gearbox for one Spindle or worm drive for To develop adjusting devices in motor vehicles, which can be produced inexpensively and is mountable. The gearbox is said to be small and compact be and preferably allow installation within the rails of a rail guide.

This task is due to the characteristics of claim 1 solved.

Then store the gear elements of the drive in a gear housing made up of at least two housing plates attached to each other by means of plug connections there, the plug connections as load-bearing, the transmission forces absorbing Connection points are formed at which the housing plates are held together, and the plug connections as game fits are formed and the position of the housing plates by plastic Deformation of the material fixed in the area of the plug connections is.

The invention has the advantage that the size of the transmission across from comparable gears can be significantly reduced because the the fastening of the individual housing parts serving plug connections are also suitable for absorbing gear forces. So is the application of the drive according to the invention also for motor vehicle seats possible, where the seat is mounted on very narrow rails, or it becomes the possibility tapped to transition to narrow rail guides.

The position of the housing plates can be fixed be made in such a way that raised areas of the Plug connections with assigned recesses first one Form play fit and then a fixation of the housing plates through plastic deformation of the material in the area of the plug connections he follows.

Advantageous embodiments of the transmission case result from the claims 2 to 24.

One method is to assemble the gearbox by the features of claim 25 and dependent claims 26 to 31 characterized.

The manufacture of the gearbox is even with small quantities profitable. Manufacturing costs are saved because the housing parts and the tools inexpensive are producible. After assembly of the housing, post-processing is not necessary of the housing plates.

The possible uses of the gearbox are great. In particular, due to its size and light weight, it can be used for drives become, the use of such gears was previously not possible.

The invention is intended to be explained below of embodiments are explained in more detail. The related ones Drawings have the following meaning:

1 - Perspective representation of a spindle drive (representation of one side of the bearing of the vehicle seat);

2 - threaded spindle with gear including bracket;

3 - bracket for a gearbox;

4 - Exploded view of the gearbox including bracket;

5 - Representation of the transmission in the assembled state;

6 - Housing plate with bearing hole for drive worm;

7 - Housing plate with bearing hole for spindle nut;

8th - Representation of an L-shaped housing plate;

9 - Representation of a U-shaped housing plate in connection with a disc-shaped housing plate;

10 - Schematic diagram of an adjustment drive with a rack and

11 - Representation of a spindle drive for a window regulator.

As from the 1 can be seen, a holding plate 1 an upper rail 3 assigned. On the holding plate 1 are fastening tabs 11a ; 11b for the drive motor 2 provided so that the drive motor 2 firmly with the holding plate 1 and thus firmly with the top rail 3 connected is.

The upper frame of the vehicle seat, not shown here, is on the top rail 3 attached.

On both sides of the drive motor 2 are drive shafts 21 and 22 arranged. Flexible shafts are preferably used for this. These drive shafts 21 . 22 make the connection to a transmission 9 forth, whose location, training and function is explained in more detail below.

The top rail 3 slides directly or via adjustment and / or bearing elements, not shown, on a lower rail fixed to the vehicle floor 4 ,

In the functional position of the top rail 3 and bottom rail 4 these are held by their contact or storage areas so that there is a cavity 31 results. Within that cavity 31 is a threaded spindle 5 arranged, this between brackets 6a and 6b is recorded on the bottom rail 4 are firmly arranged. The connection between the brackets 6a ; 6b takes place via fastening nuts 6c ; 6d ; 6c '; 6d ' ,

The threaded spindle 5 works with the gearbox 9 together, which is also in the cavity 31 arranged and fixed in the top rail 3 is stored. This arrangement is in 2 shown. The gear 9 comes in a U-shaped bracket 8th held with the top rail, not shown here 3 is firmly connected. Between the thighs 86a ; 86b of the brackets 8th and the transmission 9 are decoupling elements 10a ; 10b inserted to decouple noise and compensate for tolerances.

Another embodiment of the bearing of the transmission 9 consists of this in the top rail 3 via an extended bracket 8th' to realize. This bracket is in the 3 shown. The transmission, not shown here 9 is analogous to that in 2 shown type in the transmission receiving part 81 the bracket 8th' stored. The thigh 82a . 82b the bracket 8th' are on the top rail 3 attached. In the exemplary embodiment, these are with the top rail 3 screwed. For this reason, the legs point 82a . 82b mounting holes 83 on that with the in 1 illustrated mounting holes 30 in the top rail 3 correspond. The mounting holes 83 become sweat nuts 84 assigned, that is, the weld nuts 84 are welded onto the openings. The weld nuts show 84 towards the cavity 31 , Instead of the weld nuts 84 unit nuts or punch nuts can also be used. Another possibility is to produce passages instead of the nuts, which can be provided with an internal thread. Combinations of the options described above can also be used. Through this connection or screwing of the bracket 8th' with the top rail 3 their rigidity is improved. By arranging the weld nuts mentioned above 84 or the passages, it is possible to use the gearbox 9 with the bracket 8th' completely assemble beforehand and this unit into the cavity 31 the already installed rail guide 3 ; 4 insert. Over the mounting holes 83 and can the top rail 3 with the bracket 8th' be screwed.

The brackets 8th ; 8th' have target deformation points in a further embodiment 87a ; 87b on that between thighs 86a ; 86b the transmission mount 81 and the thighs 82a ; 82b the bracket 82a ; 82b are arranged. These target deformation points 87a ; 87b can in the simplest case be appropriately sized welds. But it is also possible as target deformation points 87a ; 87b Use angles or other profiles at this point. All of these elements are dimensioned so that they only give in at a predetermined target load and only then the legs 86a ; 86b or the gearbox mount 81 is deformed. This then happens so that when a predetermined maximum limit load is exceeded, the legs 86a ; 86b swivel sideways while the threaded spindle 5 jam. In the event of a crash this contributes to additional securing of the vehicle seat.

The two legs 82a ; 82b the bracket 8th' are angled and point in the angular ranges 85a ; 85b a material broadening that covers the cavity 31 largely filled out. This can improve the rigidity of the rail guide, that is, its resistance to buckling. The hooking of the top rail 3 with the bottom rail 4 remains engaged.

In the thighs 82a ; 82b drilled holes 88a ; 88b serve to center the bracket 8th' to the top rail 3 , for example by blind rivets, not shown here. The one in the thighs 86a ; 86b arranged passages 89a ; 89b increase the critical cross-section of the bracket 8th' and contribute to safe power transmission in the event of a crash.

As from the 4 the transmission is visible 9 from a drive screw 91 that over the outer worm gear 92 ' a spindle nut 92 is engaged. The drive worm 91 is over the drive shaft 21 ; 22 with the drive motor 2 connected (see 1 ). The spindle nut 92 is the threaded spindle via its internal thread 5 assigned.

How the device works: The drive motor rotates 2 so it transmits its movement via the drive shaft 21 ; 22 on the drive screw 91 , This transmits its rotary motion to the spindle nut 92 , Because the lead screw 5 the gearbox must rotate 9 and thus the top rail connected to it 3 Carry out a translational movement including the motor vehicle seat (see 1 ).

In the 4 is an exploded view of the structure of the transmission 9 shown. It can be seen that the gear elements, consisting of a drive worm 91 and a spindle nut 92 in the housing plates 71a ; 71b ; 72a ; 72b a gearbox 7 are stored. In the 5 is the transmission 9 shown in the assembled state. It can be seen that the drive worm 91 via bearing bores 73a and 73b in the housing plate 71a and 71b is stored while the spindle nut 92 in bearing bores 74a and 74b the housing plate 72a and 72b is stored. For the axial run-up of the spindle nut 92 and the drive screw 91 are disks 95 and 96 provided, shaft washers are used for axial play compensation 95 '; 96 ' ,

From the 5 . 6 . 7 . 8th and 9 is a possible construction of the gearbox 7 seen. As in the 5 to 7 recognizable, this consists of two opposite, disc-shaped housing plates 71a ; 71b ; 72a ; 72b , the housing plates in the individual representation according to 6 and 7 each with the reference numerals 71 respectively. 72 are provided. The housing plates 71a ; 71b ; 72a ; 72b are preferably made of a sintered material; however, other materials, such as cast materials, steel or plastic, can also be used. The housing plates 71a ; 71b ; 72a ; 72b are made to their final dimensions. This also affects the bearing bores 73a ; 73b ; 74a ; 74b whose location in the housing plates 71a ; 71b ; 72a ; 72b and also their fit tolerances.

The matching, opposite housing plates 71a ; 71b and 72a ; 72b are identical in shape. One pair has, in the exemplary embodiment it is the housing plates 72a ; 72b as bridges 76 trained areas on the edges of the case plates 72a ; 72b are arranged, i.e. along the plane of the housing plates 72a ; 72b extend. The opposite sides 761 ; 761 ' the bridges 76 are either parallel, tapered or have scraper ribs.

In the edge areas of the housing plates 71a ; 71b are corresponding recesses designed as through openings 75 transverse to the plane of the housing plates 71a ; 71b arranged. These recesses 75 point to the sides 761 ; 761 ' the bridges 76 parallel surfaces 752 ; 752 ' on.

Other possible embodiments of the housing plates are in the 8th and 9 shown. These are two L-shaped housing plates 77a ; 77b , This L-shaped housing plate 77a ; 77b wear webs on one of their thighs 76 ' which are analogous to the embodiment described above with recesses 75 ' correspond. The corresponding bearing holes 73 ' and 74 ' are, as already described above, introduced into the housing plates.

In the 9 a gear housing is shown, which consists of a U-shaped housing plate 78 and a disk-shaped housing plate assigned to this 79 consists. The legs of the U-shaped housing plate 78 also wear bridges 76 '' that in corresponding recesses 75 '' the disc-shaped housing plate 79 intervention.

The webs are used for assembly 76 ; 76 '; 76 '' into the recesses 75 ; 75 '; 75 '' plugged. The dimensions of the recesses 75 ; 75 '; 75 '' and bridges 76 ; 76 '; 76 '' are matched to one another in such a way that either fitting fits or press fits can be formed using assembly methods. After plugging together, the location of the recesses 75 and the bridges 76 and thus the position of the drive worm 91 to the spindle nut 92 fixed and thus finally determined by plastically deforming the material in the area of the plug connections.

The assembly of the gearbox 7 can be supported or fully replaced by automatic processes. This is now based on disk-shaped housing plates 71a ; 71b ; 72a ; 72b explained. The assembly of the L-shaped housing plates 77 and U-shaped housing plates 78 respectively. 79 is done analogously. For this purpose, the gear elements (drive worm 91 , Spindle nut 92 ; slices 95 ; 96 , Wave washers 95 '; 96 ' ) including the housing (housing plates 71 ; 72 ) pre-assembled. This means that the gear elements are inserted in the bearing holes provided and the housing plates 71 ; 72 are put together.

This pre-assembled gear 9 is now inserted in a combined holding and caulking device, the gear 9 captured on its outer contour. The holding takes place in the direction of the plane of the housing plates 72a ; 72b , the holding forces acting on the four corners of the housing plate 71a or 71b attack, be kept relatively low.

The gear 9 is now moved by preferably the drive worm 92 is rotated. At least one turn must be made. The housing plates 71a ; 71b ; 72a ; 72b can align themselves without tension. After completing this movement, the holding forces are increased so that the gear elements 91 ; 92 and housing plates 71a ; 71b ; 72a ; 72b be held in this position and slipping is prevented. A caulking tool now reaches into the area of the plug connections, that is, into the contact points between the webs 76 ; 76 ' and 76 '' and the recesses 75 ; 75 ' and 75 '' and plastically deforms the material at these points. The deformation takes place in such a way that the material forms undercuts, for example, and thus the position of the housing plates 71a ; 71b ; 72a ; 72b are finally fixed to each other.

To deform the bearing bores 74a ; 74b the spindle nut 92 to avoid, the caulking does not take place over the entire length of the plug connections. Caulking is only carried out in the area where the forces influence the bearing area of the spindle nut 92 in the housing plate 72 and thus a deformation of the bearing bores 74 can be excluded.

Fixing the housing plates 71a ; 71b ; 72a ; 72b can also be done by welding the material in the area of the plug connections using laser technology. Another option is. The location of the housing plates 71 ; 72 to fix each other by pouring the material in the area of the plug connections.

Another embodiment of the method is that the rotation of the gear elements is carried out at a higher speed for the purpose of alignment. It is expedient to work with the nominal speed or with a speed of the gearbox above this. The resulting gyro forces maintain the position of the gear elements during movement 91 ; 92 mutually stable, so that the fixation can take place here during the movement.

The storage of the threaded spindle 5 can be further developed in that the brackets 6a ; 6b (please refer 2 ) of the threaded spindle 5 vibration-damping bushings (not shown here) or similar components are assigned.

Furthermore, the storage of the threaded spindle is provided 5 to be equipped with an emergency actuation. This is necessary in the event of a gearbox defect 9 unscrewing the threaded spindle 5 to enable. As a result, the motor vehicle seat can also be moved in this case, which is necessary for its removal, since the holder is screwed on 6a ; 6b with the bottom rail 4 through the top rail 3 can be covered. If you want to loosen the screw connection, the top rail must be used 3 to the bottom rail 4 be moved.

For this purpose it is provided that the threaded spindle is supported on at least one holder 6a ; 6b to be equipped with a predetermined breaking point and the threaded spindle 5 to be provided with at least one end with a form-locking element which can be gripped and rotated with a tool in the event of use.

The use of the transmission according to the invention described above is not only based on the actuation of a threaded spindle 5 limited. A rack can also be used. 10 shows schematically the arrangement of such a device within the gear housing according to the invention 7 ' is arranged. The drive worm combs 91 ' with a worm wheel 93 that axially with a snail 94 is firmly connected. The snail 94 is with the toothing of a rack 51 engaged.

The rotary movement of the drive motor, not shown here, causes a rotary movement on the drive worm 91 ' transfer. This moves the worm wheel 93 and thus the snail 94 , resulting in a relative movement between the rack 51 and the transmission leads. With this device, a seat adjustment device or a window regulator or other adjustment device can also be operated in a motor vehicle.

In the 11 a basic sketch is shown, from which one can see a possibility for the use of the invention for driving a window lifter on a vehicle door. Like in the 11 to see is a window pane 12 between two guide rails 131 ; 132 held, which are arranged on one side of the vehicle door. At the lower edge 12 ' the window pane 12 is over a holding rail 14 a window motor 15 arranged, which is powered by a cable. The drive shaft 23 of the window regulator motor 15 is with the gear 9 connected. The structure of the transmission 9 was already based on the 4 described in more detail. That is, inside the gearbox 7 there is a drive worm, not shown here, which has a spindle nut with a threaded spindle 5 ' is engaged. The threaded spindle 5 is about bracket 161 ; 162 non-rotatable on the inner door panel 17 attached. The axis of the threaded spindle must be used 5 towards the direction of movement the window pane 12 demonstrate.

The window motor turns 15 , the spindle nut is rotated via the drive worm, not shown here. Because the lead screw 5 ' is rotationally fixed, the gear unit must be firmly connected 9 , Window regulator motor 15 and window pane 12 along the axis of the threaded spindle 5 ' move. The window pane 12 in the guide rails 131 ; 132 guided.

The application of the invention is limited not to the examples for the actuation of the seat adjustment described above and the power window drive. It is also possible to use the invention for spindle or worm drives for adjusting the seat height, the seat angle, the seat cushion depth adjustment, the seat back adjustment and the headrest adjustment.

1

Retaining plate

10a; 10b

decoupling element

11a; 11b

mounting tabs

12

windowpane

12 '

lower edge the window pane

131; 132

guide rails

14

retaining rails

15

Window motor

151

electric wire

161; 162

bracket

2

drive motor

21; 22; 24

drive shaft

3

upper rail

30

fastening opening

31

cavity

4

bottom rail

5; 5 '

screw

51

rack

6a; 6b

brackets

6c; 6d; 6c '; 6d '

fixing nut

6e

attack

7; 7 '

gearbox

71a; 71b

housing plates

72a; 72b

housing plates

73a; 73b

bearing bores

74a; 74b

bearing bores

75; 75 '; 75 ''

recesses

76; 76 '; 76 ''

Stege

761; 762

Stege

77

L-shaped housing plate

78

U-shaped housing plate

79

disc-shaped housing plate

8th

bracket

81

gearbox mount

82a; 82b

leg the bracket

83

mounting holes

84

mother

85

angle ranges

86a; 86b

leg the transmission mount

87a; 87b

Intended deformation points

9; 9 '

transmission

91

drive worm

92

spindle nut

92 '

worm gear

93

worm

94

slug

95; 95 '; 96; 96 '

wave ring

Claims (32)

Spindle or worm drive for adjustment devices in motor vehicles, in particular for seat adjustment devices, window lifters and sunroofs, with a fixed spindle or a fixed toothed rack, which is fastened to a first of two parts that can be adjusted relative to one another, with a gear mechanism that can be adjusted on the second one of the adjustable ones Parts is stored, and with egg Nem gear housing for mounting the gear, which consists of at least two housing plates that can be fixed to one another, the housing plates ( 71 ; 72 ; 71a ; 71b ; 72a ; 72b ; 77a ; 77b ; 78 ; 79 ) can be fixed to one another by means of plug-in connections which are designed as load-bearing connection points which absorb the transmission forces, at which the housing plates ( 71 ; 72 ; 71a ; 71b ; 72a ; 72b ; 77a ; 77b ; 78 ; 79 ) are held together, characterized in that the plug connections are designed as clearance fits and the position of the housing plates ( 71 ; 72 ; 71a ; 71b ; 72a ; 72b ; 77a ; 77b ; 78 ; 79 ) is fixed in the area of the plug connections by plastic deformation of the material. Drive according to claim 1, characterized in that the gear housing ( 7 ) from two L-shaped housing plates ( 77a ; 77b ) consists. Drive according to claim 1, characterized in that the gear housing ( 7 ) from at least two pairs of opposed disc-shaped housing plates ( 71a ; 71b ; 72a ; 72b ) consists. Drive according to one of the preceding claims, characterized in that the housing plates ( 71a ; 71b ; 72a ; 72b ) are identical. Drive according to claim 1, characterized in that the gear housing ( 7 ) from a U-shaped ( 78 ) and a disc-shaped housing plate ( 79 ) consists. Drive according to one of the preceding claims, characterized in that raised areas ( 76 ; 76 '; 76 '' ) of the plug connections along the level of the housing plates ( 72 ; 72a ; 72b ; 77 ; 78 ) and assigned recesses ( 75 ; 75 '; 75 '' ) transverse to the plane of the housing plates ( 72 ; 72a ; 72b ; 77 ; 78 ) extend. Drive according to claim 6, characterized in that the recesses as through openings ( 75 ; 75 '; 75 '' ) are trained. Drive according to claim 6, characterized in that the raised areas as webs ( 76 ; 76 '; 76 '' ) are trained. Drive according to one of claims 6 to 8, characterized in that the raised areas ( 76 ; 76 '; 76 '' ) of the plug connections parallel surfaces in the assembly direction ( 761 ; 762 ; 761 '; 762 ' ) which have precisely fitting recesses ( 75 ; 75 '; 75 '' ) with surfaces also parallel in the assembly direction ( 751 ; 752 ; 751 '; 752 ' ) assigned. Drive according to one of claims 6 to 8, characterized in that the raised areas ( 76 ; 76 '; 76 '' ) of the plug connections have conical surfaces in the mounting direction, the recesses ( 75 ; 75 '; 75 '' ) with possibly parallel surfaces in the assembly direction ( 751 ; 752 ) are assigned so that an interference fit is formed during assembly. Drive according to one of the preceding claims, characterized in that the housing plates ( 72a ; 72b ; 77 ; 78 ) are made of a sintered material, a cast material, steel or plastic. Drive according to one of the preceding claims, characterized in that at least some of the bearing points ( 73 ; 73a ; 73b ; 74 ; 74 '; 74 ''; 74a ; 74b ) the gear elements ( 91 ; 91 '; 92 ; 93 ; 94 ) in the housing plates ( 72a ; 72b ; 77 ; 78 ) are integrated. Drive according to one of the preceding claims, characterized in that the gear ( 9 ) from a threaded spindle ( 5 ), a spindle nut ( 92 ) with external worm gear teeth ( 92 ) and an engaged worm gear ( 91 ) consists. Drive according to one of claims 1 to 12, characterized in that the gear ( 9 ) from a rack ( 51 ), one of these assigned snails ( 94 ) with worm wheel ( 93 ) and a drive screw ( 91 ' ), the snail ( 94 ) with the worm wheel ( 93 ) lies on an axis and is firmly connected to it. Drive according to claim 13, characterized in that the threaded spindle ( 5 ) in the cavity ( 31 ) a box profile-like guide rail ( 3 ; 4 ) a longitudinal seat adjustment is arranged, the threaded spindle ( 5 ) via their ends on the lower rail fixed to the vehicle ( 4 ) and the gearbox ( 7 ) on the sliding top rail ( 3 ) is attached. Drive according to claim 15, characterized in that the gear housing ( 7 ) in a U-shaped gearbox mount ( 81 ) a bracket ( 8th ) whose angled legs ( 82a ; 82b ) for fastening the gearbox ( 9 ) on the top rail ( 3 ) are provided. Drive according to claim 15 and 16, characterized in that the angled legs ( 82a ; 82b ) the bracket ( 8th ) over the entire length of the top rail ( 3 ) and fastening openings ( 83 ), which have fastening openings ( 30 ) the top rail ( 3 ) are assigned so that the bracket ( 8th ) with the top rail ( 3 ) is connectable and stiffened. Drive according to claim 17, characterized in that the fastening openings ( 83 ) the bracket ( 8th' ) as internally threaded fasteners ( 84 ), preferably in the form of passages, which are formed in the cavity ( 31 ) protrude. Drive according to one of claims 16 to 18, characterized in that the end regions ( 85a ; 85b ) the bracket ( 8th' ) are angled and designed so that they have the free cross-section of the top rail ( 3 ) and / or the bottom rail ( 4 ) fill out as far as possible. Drive according to one of claims 16 to 19, characterized in that for noise decoupling and tolerance compensation between the gear ( 9 ) and thighs ( 86a ; 86b ) the gearbox mount ( 81 ) the bracket ( 8th ) Decoupling elements ( 10a ; 10b ) made of rubber or plastic. Drive according to one of claims 16 to 20, characterized in that between the legs ( 86a ; 86b ) the gearbox mount ( 81 ) and the angled legs ( 82a ; 82b ) the bracket ( 8th' ) Target deformation points ( 87a ; 87b ) are designed so that when a predetermined maximum limit load is exceeded, the legs ( 86a ; 86b ) the gearbox mount ( 81 ) swivel sideways and the threaded spindle ( 5 ) jam. Drive according to Claim 13 or one of Claims 15 to 21, characterized in that the ends of the threaded spindle ( 5 ) are stored in vibration-damping bushings or the like. Drive according to claim 13 or one of claims 15 to 22, characterized in that the threaded spindle ( 5 ' ) is attached in the motor vehicle door so that the threaded spindle ( 5 ' ) in the direction of movement of the window pane ( 12 ) and that with the threaded spindle ( 5 ' ) related gears ( 9 ' ) directly or indirectly with that of the lower edge ( 12 ) the window pane ( 12 ) connected is. Drive according to one of the preceding claims, characterized characterized in that the Spindle or worm drive part of an adjustment device for the Seat height, the seat angle, the seat cushion depth, the headrest and / or the backrest is. Method for assembling a spindle or worm drive for adjusting devices in motor vehicles according to one of the preceding claims, with a gear housing which consists of at least two housing plates which can be fixed to one another and which serves to support rotating gear elements of the drive, characterized in that a) the housing plates ( 72a ; 72b ; 77 ; 78 ) can be fixed to each other by means of plug connections, b) the gear elements ( 91 ; 92 ; 93 ; 94 ) and housing plates ( 72a ; 72b ; 77 ; 78 ) are held completely pre-assembled in a device that the housing ( 7 ) captured on its outer contour with low holding forces, c) the gear elements ( 91 ; 92 ; 93 ; 94 ) for the purpose of aligning their bearings ( 73a ; 73b ; 74a ; 74b ) are rotated and d) after alignment by increasing the holding forces, the position of the gear elements ( 91 ; 92 ; 93 ; 94 ) and housing plates ( 72a ; 72b ; 77 ; 78 ) held together and finally their position is fixed, so that the plug connections act as load-bearing, absorbing the transmission forces connection points. A method according to claim 25, characterized in that the gear elements ( 91 ; 92 ; 93 ; 94 ) rotated by at least 360 °, then held and fixed in this position. A method according to claim 25, characterized in that the gear elements ( 91 ; 92 ; 93 ; 94 ) are driven at a speed that is above the nominal speed of the gearbox ( 9 ) and during the rotation of the gear elements ( 91 ; 92 ; 93 ; 94 ) the position of the housing plates ( 72a ; 72b ; 77 ; 78 ) are fixed to each other. A method according to claim 25, characterized in that the fixing of the housing plates ( 72a ; 72b ; 77 ; 78 ) by caulking the material in the area of the plug connections, but outside the area of the bearing bores ( 74a ; 74b ) for the spindle nut ( 92 ) he follows. A method according to claim 25, characterized in that the fixing of the housing plates ( 72a ; 72b ; 77 ; 78 ) by laser welding or by potting the plug connections. A method according to claim 25, characterized in that the fixing of the housing plates ( 72a ; 72b ; 77 ; 78 ) by gluing the plug connections. A method according to claim 25, characterized in that the holding of the outer contour of the housing plates ( 72a ; 72b ; 77 ; 78 ), turning the gear elements ( 91 ; 92 ; 93 ; 94 ) and the caulking of the plug connections is carried out in a combined assembly device. Use of a drive according to one of claims 16 to 19 for a rail guide of a vehicle seat, characterized in that the Transmission ( 9 ) completely pre-assembled and in the holder ( 8th' ) built into the cavity ( 31 ) the rail guide ( 3 ; 4 ) inserted and over the fastening openings ( 83 ) with the top rail ( 3 ) is screwed.