DE202006006083U1 - Window lifter e.g. single- or double-stranded rope or Bowden cable window lifter, for motor vehicle, has upper and lower housings directly pivoted in guide rail, where housings are pivoted between clamping part and housings by clamping rail - Google Patents

Abstract

The lifter has a guide rail for guiding an actuator and a drive that are coupled with a window glass. The drive is mounted in upper and lower housings (33, 34), where the housings are directly pivoted in the guide rail. The upper and lower housings include a clamping part and are pivoted between the clamping part and the upper and lower housings by clamping the guide rail. The clamping part is designed as a bearing cover (7) to retain and support a rope drum (38) for winding up and unwinding a cable of the lifter. A longitudinal slot is formed in the clamping part.

Description

Territory of invention

The The present invention relates generally to the attachment of electrical Drive motors on power window assemblies for motor vehicles and concerns in particular a single or double-strand cable or Bowdenzugfensterheber for motor vehicles with integrated drive motor. Another aspect of the present The invention further relates to a method for assembling a window lifter aforementioned type.

background the invention

in the State of the art electric drive motors for cable or Bowden cable window lifter for Motor vehicles either at the door, a base plate, in particular a so-called door module carrier, or directly on the guide rail attached. In any case, the drive motor as a self-contained unit bolted to the contact points. The screws hold the drive against forces by vibrations, acceleration forces and against the delivered Torque tight. The drive housing is also without the screw or attachment to the door, the base plate or the guide rail sufficiently rigid and stable, so that the drive is fully functional and can deliver its maximum torque. This requires a comparatively high material use, to a sufficient inherent rigidity and stability of the drive housing to reach. An attachment by screwing provides a comparatively labor-intensive and expensive step. Furthermore, the drive can not be easily replaced, for example, in case of damage, because the drive housing usually is formed of a plastic. When re-screwing can the drive housing if the screw is tightened too much in the contact area break.

If the drive is fastened directly to the guide rail, a base plate is necessary according to the prior art in order to fix the drive. This base plate can be either stamped out of the corresponding guide rail, such as in DE 198 38 347 C2 disclosed, or separately attached to the rail and the engine. In any case, an increased expenditure of material and time is required. Furthermore, today's drive motors are provided for cost reasons only with three contact points to limit the cost of screwing.

Summary the invention

task The present invention is a power window assembly with to provide a simple structure in which a drive motor in a simple and cost-effective Way reliable on a guide rail can be stored.

These and further objects are according to the present Invention by a window with the features of claim 1 solved. Further advantageous embodiments are the subject of the referenced Dependent claims.

Consequently the present invention is based on a window regulator for motor vehicles, in particular a cable or Bowdenzugfensterheber, at least a guide rail to lead a coupled with a window pane driver and a Drive comprises, which is accommodated in a drive housing. there is the drive housing stored directly on the guide rail. According to the invention the drive housing Further, a clamping part, wherein the drive housing on the guide rail by clamping the guide rail stored or clamped between the clamping part and the drive housing is.

Thus, according to the invention the base plate completely omitted. this leads to to a considerable material saving and cost reduction. Also the Assembly can according to the invention considerably be simplified because the drive directly to the guide rail can be fixed by clamping. Overall, according to the invention becomes a more compact Structure of a window lift provided. In a window according to the invention can the drive for different model variants are always kept the same while through Variation of the clamping part and / or the drive housing the different Model variants can be created, in adaptation to the respective Vehicle type. Because the base plate in the window according to the invention Completely can be omitted, the drive can basically very close to the guide rail be arranged, resulting in a significantly better force application and overall leads to lower overturning moments. In particular, the Drive can also be arranged directly below the guide rail. While in the prior art, the drive housing for cost reasons Only three Kantaktstellen is stored, on one at the guide rail adjacent upper side of the drive housing basically more than three contact points be formed without this leads to higher costs of the drive housing. Consequently can the drive housing according to the invention suitable on the guide rail supported be secured, in particular against tilting or slipping. this leads to to a lower load on the components in continuous operation, which the reliability the window lifter according to the invention on elevated.

Of the Structure of the window according to the invention can according to a another embodiment be simplified by the fact that the clamping part as Bearing cover is formed to a cable drum of the window lifter to pick up and store. On a separate bearing cap can thus complete be waived. This is particularly a very compact Construction allows in which the cable drum is mounted in close proximity to the guide rail and the drive is mounted directly below the guide rail. This results in an optimal introduction of force and in low Tipping moments of storage of the drive.

According to one another embodiment is the guide rail with a substantially U-shaped Rail profile formed in which the clamping part engages positively. As a result, a slipping of the drive housing is transverse to the longitudinal direction the guide rail effectively prevented. Thus, the clamping part is at least partially formed corresponding to the rail profile. To this end can according to another embodiment in the clamping part a longitudinal slot be formed, in which a corresponding trained vertical edge web of the rail profile received snugly is. By this configuration, the position of the drive on the guide rail precise specified and secured.

Around to achieve a more symmetrical clamping of the guide rail, is according to one another embodiment on one of the guide rail facing Top of the drive housing a longitudinal rib formed, which are opposite to an aforementioned edge web further edge web of the rail profile is supported, whereby the position of the drive housing in a direction transverse to the longitudinal direction the guide rail secured can be. In particular, lets so also a clamping of the guide rail between the longitudinal rib and the longitudinal slot formed in the clamping part in one direction transverse to the longitudinal direction the guide rail achieve, in particular for the case of a punch-embossing technique trained guide rail from a metal sheet.

According to one another embodiment are on the drive housing and / or the guide rail axial securing means provided to the position of the drive housing in longitudinal direction the guide rail to secure, in particular slipping of the drive housing prevent. Are useful For this purpose on the drive housing and the guide rail mutually correspondingly designed form-fitting structure, such as for example, projections, Depressions, characteristics, Recesses, passage openings or the like formed, which engage positively with each other. For one even more reliable Storage of the drive housing can the axial securing means according to a relative to another embodiment be braced to each other. The aforementioned securing means can be integral with the drive housing or the guide rail be formed, for example by embossing or punching a metal sheet or providing a suitable injection mold for forming of the drive housing and / or the guide rail made of a plastic, or can on the guide rail and the drive housing be formed separately, for example by spraying a Formschlussgebildes of a suitable plastic.

According to one another embodiment The axial securing means comprise one formed on one end of the drive housing Projection in a protruding from a bottom of the guide rail tab hooked is, whereby a first contact area is formed. Further include the axial securing means at least one projection on a across from lying end of the drive housing is formed and in a correspondingly formed recess at the bottom of the guide rail engages, whereby a second contact area is formed. Are useful the two contact points slightly braced against each other to a substantially backlash-free Storage of the drive housing on the guide rail to allow in a simple manner. The hanging the projection in the tab facilitates the assembly of the window regulator according to the invention considerably. The at least one projection on the opposite end of the drive housing can in particular clipped into the recess or passage opening at the bottom of the guide rail be.

at the aforementioned embodiment are the tabs at the opposite lying end of the drive housing appropriate in the area of the gearbox on the guide rail supported, which a large-area contact is made possible by the loads occurring during operation on the storage to reduce. Appropriately, the two projections while in the immediate vicinity provided the aforementioned clamping part, in particular in the immediate Close to Ends of the clamping member in the longitudinal direction the guide rail considered. As a result, a total of symmetrical force transmission be achieved. This is especially true in the event that the clamping part simultaneously forms a bearing cap for storing a cable drum. In such an embodiment are the two aforementioned projections expediently symmetrical to an imaginary Perpendicular by a the cable drum overlapping axle the guide rail arranged.

According to one another embodiment the aforementioned projections and the former formed at the one end of the drive housing Projection hooked into the tab at the bottom of the guide rail, along a centerline of the rail profile. This will be a defined storage of the drive housing on the guide rail guaranteed such that by distributing several projections to both Sides of the aforementioned center line, expedient in a symmetrical arrangement with respect to the aforementioned center line, a substantially tilt-free Storage of the drive housing realized on the guide rail can be. These further contact points are preferred as one-sided Pressure bearing executed and lie over the bearing points of the motor shaft and hold them against the guide rail braced.

According to one another embodiment, the aforementioned projections be designed as mutually parallel longitudinal ribs. Such projections or longitudinal ribs can in particular by injection molding a housing shell the drive of a plastic formed in a simple manner become.

According to one another embodiment is the drive housing so on the guide rail stored that a recorded in the drive housing electric motor and its output shaft is below and parallel to a centerline of the guide rail extend trained rail profile. In this way, tilting moments can can be effectively reduced and can reduce the burden on the bearings be reduced.

According to one another embodiment becomes the drive housing of two housing shells formed, between which an electric motor with associated control electronics as well as a gearbox completely encapsulated are stored. After introducing the mechanics and electronics the drive between the two housing shells can this as part of a pre-assembly together to form a functional drive unit are connected, which are tested in the pre-assembled state for their functionality can. In the pre-assembled state are the mechanics and electronics the drive already protected against dirt and moisture. For this purpose, am the upper edge of a housing shell be arranged circumferential sealing ring, for example in a there circumferential groove, the between the two housing shells is clamped. A simple clamping of a sealing ring can in particular by locking the two housing shells be achieved with each other. To this end, around the scope of the two housing shells distributes a plurality of latching hooks and correspondingly formed latching tabs be provided.

According to one another embodiment is on the drive housing a gear housing section formed in which a gear is received, with the window is coupled, for example with a cable drum of a rope window regulator. Preferably, the clamping part with the gear housing section by means of two Screwed screws, preferably at diametrically opposite one another Ends of the gear housing section, whereby accomplishes a symmetrical clamping in a simple manner becomes.

One Another aspect of the present invention further relates a method for mounting a motor vehicle window lifter of the aforementioned type. In such a method, the drive unit is pre-assembled and fully functional provided. In this state, the drive unit can be tested. The drive unit is brought into abutment with the guide rail. Subsequently, the Clamping part on the guide rail put on and are the clamping part and the drive unit together firmly connected, for example by screwing the clamping part with the drive housing, preferably by means of two at opposite ends of the clamping part provided screws.

LIST OF FIGURES

following the invention will be described by way of example and with reference on the attached Drawings are described, resulting in more features, benefits and to be solved Tasks will result. Show it:

1 in a schematic exploded sectional view of a cable window lifter according to the present invention;

2 in a sectional view of the window according to the 1 in an assembled state;

3 in a perspective exploded view and in a bottom view of the window according to the 1 ;

4 the window according to the 3 in a perspective bottom view;

5 the window according to the 3 in a perspective plan view; and

6 the window according to the 3 in a top view.

In the figures denote identical reference numerals identical or essentially equivalent elements or groups of elements.

Full Description of a preferred embodiment

According to the 1 For example, a cable window lifter according to the present invention includes a substantially U-shaped rail profile 10 , one from an upper shell 33 and a lower housing shell 34 trained drive housing and a bearing cap 7 , The rail profile 10 the guide rail is made of two parallel vertical guide webs 11 and a horizontal guide bar 12 educated. From the left guide bridge 11 protrudes an edge ridge 13 horizontally, which is encompassed by leading to driver. In the drive housing, a transmission is accommodated, which is a worm wheel 65 and a gear meshing with it 66 includes, whose lead 660 in a rope drum 38 for the rotationally fixed coupling of the gear 66 with the rope drum 38 intervenes. The rope drum 38 is on a housing-fixed axle 40 rotatably mounted. The rope drum 38 penetrates one in the upper housing shell 33 trained opening 330 , In the bearing cap 7 is one of a circumferential sidewall 71 formed rope drum recording 72 for picking up the rope drum 38 educated. In the assembled state according to 2 is the front end of the axle bolt 40 in the storage area 73 of the bearing cap 7 stored. According to the 1 has the bearing cap 7 a storage section 74 on, in which a profile in the substantially rectangular longitudinal slot 76 is formed, which at its front end in a widened area 75 goes over to simply inserting the right vertical edge land 11 and to allow its stress-free storage.

The two housing shells 33 . 34 are locked together and take, as in the 3 shown an electric motor 6 , An associated with this control electronics 321 and the gearbox up. The bearing cap 7 is with the drive housing by means of two bolts 80 connected. In the assembled state according to 2 takes the longitudinal slot in the bearing section 74 of the bearing cap the right vertical edge bar 11 the rail profile close fitting and are those of the upper housing shell 33 above contact areas 334 - 336 immediately at the back of the floor 12 of the rail profile. In this way, the drive housing is by clamping the guide rail between the bearing cover acting as a clamping part 7 and the drive housing mounted on the guide rail.

Like in the 4 and 5 are shown along the circumference of the upper shell 33 distributes several vertical protruding locking tabs 45 formed in the corresponding places of the lower housing shell 34 provided latch hooks 51 intervention. By clipping the locking hooks 51 in the locking tabs 45 become the two housing shells 33 . 34 held together under clamping of a circumferential sealing ring at the top of one of the two housing shells. For a better support of the drive housing, this is according to the 4 additionally hooked into the guide rail. As will be readily apparent to those skilled in the art, the drive housing may also be bolted or otherwise secured to the guide rail. For this purpose is at a the transmission housing 42 opposite end of the drive housing an extension 340 formed, at the front end of a nose 341 is formed, in a correspondingly formed Einhänglasche 15 on the ground 12 the rail profile is mounted. According to the 5 are at the other end of the drive housing, that is in the region of the bearing cap, two cylindrical projections 3300 formed in correspondingly formed through openings or recesses 14 in the ground 12 engage the rail profile. In the assembled state, the projections 3300 against the nose 341 (see. 4 ) and the associated hanging strap 15 biased. According to the 5 the projections are aligned 3300 with the nose formed at the other end of the drive housing 341 ( 4 ) along a centerline of the rail profile. As will be apparent to those skilled in the art, the projections 3300 be arranged in any other geometric arrangement, in particular on alternating sides of the aforementioned center line. According to the 6 are the two projections 3300 arranged at a respective end of the bearing cap. Furthermore, according to the 6 Connecting extensions 78 formed for screwing the bearing cap with the gear housing portion at the front and rear end of the bearing cap.

According to the 5 is on the upper housing shell 33 also a longitudinal rib 339 formed in the mounted state on the outside of an edge web 11 of the rail profile is applied. This longitudinal rib 339 forms a further support of the clamped from the bearing cover rail profile. Again 5 can be removed, the bearing cap is supported over a large area on the gear housing section, so that occurring during operation loads can be effectively derived and distributed. According to the 1 are the multiple contact points 334 to 336 on the upper housing shell chosen so that a bending of the drive housing is prevented on the guide rail. To further support the basis of the 4 and 5 described above suspension of the drive housing in the guide rail.

The 3 shows the power window assembly in a perspective view from below. For assembly, the electric motor is first 6 with the control electronics 321 and the connector 320 in the lower housing shell 34 introduced and the drive screw 61 with the output shaft 60 of the motor 6 coupled and by means of bearings 62 . 63 , which are described in more detail below, stored. Further, the gear 66 and the worm wheel 65 of the gearbox and the wrap spring 67 hooked. Subsequently, the upper housing shell 33 with the sliding ring 64 for storage of the gear 66 on the lower housing shell 34 put on and the two housing shells 33 . 34 over the locking hooks 51 and snap tabs 35 latched together. For inserting the locking tabs 45 are on the lower housing shell 34 from Stegen 510 formed introduction areas 511 educated. Then the rope drum 38 from above on the gear housing section 42 put on so that the lead 380 the rope drum 38 in a corresponding recess of the gear 66 engages and gear 66 and cable drum 38 rotatably coupled to each other. Subsequently, the nose becomes 341 (see. 4 ) of the drive housing in the Einhänglasche 15 mounted on the rail profile and the drive housing on the guide rail 1 swung down until the on the upper housing shell 33 formed cylindrical projections 3300 (see. 6 ) in the passage openings 14 engage the bottom of the rail profile. In this position, the pole tube and the output shaft extend 60 of the electric motor 6 (see. 3 ) below and parallel to a centerline of the guide rail 1 trained rail profile. Subsequently, the bearing cap on the connection extensions 78 with the connection extensions 337 (see. 4 ) screwed to the lower housing shell, so that the vertical edge web of the rail profile in the axial longitudinal slot of the connection extension 74 (see. 1 ) of the bearing cap 7 engages and the guide rail is clamped between the bearing cap and the drive housing.

In the assembled state of the control electronics receiving housing section 32 ' arranged relative to the guide rail on the other side of the bearing cap, resulting in a more symmetrical weight distribution.

The drive housing itself can be designed the same for different variants of the cable window lifter and thus be used for several types of vehicles. The bearing cap can be used to form variants. For example, only the cable inlet areas need for different rope outlet angles 77 (see. 4 ). However, the contact surface between the drive housing and guide rail remains the same. If there is a need to rotate the entire drive from its optimum position for reasons of space, this is likewise possible according to the invention by appropriate adjustments to the bearing cover and / or the guide rail.

To use any type of drives, the drive screw according to the invention is designed asymmetrically in the gear stage. This allows the use of drives with short drive stubs. With an asymmetric bearing the bearing behavior of the entire drive is meant. Like in the 3 shown, the screw has a bearing at its end 63 with axial and radial guidance. Preferably, this bearing is to be made as small as possible. At the other end of the snail becomes the stub axle 60 the drive inserted against rotation and previously a one-sided floating bearing 62 threaded. This supports radially and unilaterally axially to relieve the actual pinion. By using the asymmetric screw, the pinion is free of axial forces from the screw. This means a simpler storage of the drive pinion and thus a cost savings. The worm closes the gearbox, which makes the length of the motor or the diameter of the axle irrelevant. This freedom enables an optimally designed worm with a minimum axle diameter, one-sided point start and collar start at the floating bearing.

As the expert in studying the above description readily will be apparent, the drive can be replaced non-destructively, by loosening the screws on the bearing cap. Preferably, the guide rail formed from a metal sheet in stamping embossing technique. The however, the present invention is not limited thereto, but rather can the guide rail and the housing shells of the drive housing and the bearing cap also made of a sufficiently rigid plastic be formed, in particular by injection molding. The window regulator assembly according to the invention is suitable for both stranded as well as for double-stranded rope or Bowden cable window lifter.

1

guide rail

6

electric motor

7

bearing cap

10

rail profile

11

vertical guide web

12

horizontal Guide bar / Floor

13

edge web

14

recess

15

Einhänglasche

31

motor housing

32 '

housing section for electronics

320

connector

321

circuit board

33

Upper shell

330

Through opening

331

gearbox mount

332

Side wall

333

Motor shell

334

contact point

335

contact point

336

contact point

337

Connecting projection

338

bearing web

339

support rib

3300

head Start

34

subshell

340

extension

341

nose

38

cable drum

380

head Start on rope drum

40

axle

45

snap tab

51

latch hook

510

web

511

tab receiving

60

drive shaft

61

drive worm

62

one-sided movable bearing

63

camp

64

sliding ring

65

worm

66

gear

660

Projection on gear 66

67

wrap

70

Bottom of the bearing cap 7

71

Side wall

72

Cable drum recording

73

Bearing location for axle bolts 40

74

bearing section

75

Clear cut

76

Support for vertical guide bar 11 the guide rail 1

77

Cable inlet area

78

Connecting projection

79

Through opening

80

Connecting member / screw

Claims (18)

Window lift for motor vehicles, with at least one guide rail ( 1 ) for guiding a driver coupled to a window pane and a drive ( 6 ), which in a drive housing ( 33 . 34 ), wherein the drive housing directly on the guide rail ( 1 ), characterized in that the drive housing a clamping part ( 7 ) and is mounted by clamping the guide rail between the clamping part and the drive housing on the guide rail. Window regulator according to Claim 1, in which the clamping part is used as a bearing cap ( 7 ) is formed therein to a cable drum ( 38 ) for winding and unwinding a rope of the window lift and store. Window regulator according to one of the preceding claims, in which the guide rail ( 1 ) is substantially U-shaped and in the clamping part ( 7 ) a longitudinal slot ( 76 ) is formed in order to have a correspondingly formed edge web ( 11 ) of the guide rail close fitting. Window regulator according to claim 3, wherein on one of the guide rails ( 1 ) facing top ( 33 ) of the drive housing a longitudinal rib ( 339 ) is formed on a the edge web opposite another edge web ( 11 ) of the guide rail is supported to the position of the drive housing in a direction transverse to the longitudinal direction of the guide rail ( 1 ). Window regulator according to one of the preceding claims, further comprising axial securing means ( 340 . 341 . 3300 ; 15 . 14 ) attached to the drive housing ( 33 ) and / or the guide rail ( 1 ) are provided to the bearings of the drive housing in the longitudinal direction of the guide rail ( 1 ). Window regulator according to claim 5, wherein the axial securing means on the drive housing ( 33 . 34 ) and the guide rail ( 1 ) are formed and positively engage with each other. A window regulator according to claim 5 or 6, wherein the axial securing means comprises a projection (10) formed on one end of the drive housing. 341 ), which is in one of a ground ( 12 ) of the guide rail protruding tab ( 15 ) and at least one projection ( 3300 ) which is formed at an opposite end of the drive housing and in a projection ( 14 ) engages the bottom of the guide rail. Window regulator according to claim 7, wherein at the opposite end of the drive housing near the clamping part ( 7 ) two spaced-apart projections ( 3300 ) are formed. Window regulator according to claim 8, wherein the projections ( 341 . 3300 ) along a center line of a rail profile formed by the guide rail ( 10 ) are aligned. Window regulator according to one of the preceding claims, wherein on one of the guide rails ( 1 ) facing top ( 33 ) of the drive housing a plurality of projections ( 334 - 336 ) are formed directly at a bottom of the guide rail ( 1 ) to prevent tilting of the drive housing on the guide rail. Window regulator according to Claim 10, in which the projections are designed as longitudinal ribs ( 334 - 336 ) are formed. Window regulator according to one of the preceding claims, wherein the drive housing ( 33 . 34 ) so on the guide rail ( 1 ) is mounted, that a recorded in the drive housing electric motor ( 6 ) and its output shaft ( 60 ) extending below and parallel to a center line of a rail profile formed by the guide rail ( 10 ). Window regulator according to one of the preceding claims, wherein the drive housing of two housing shells ( 33 . 34 ) is formed, between which an electric motor ( 6 ) with associated control electronics ( 321 ) as well as a transmission ( 61 - 66 ) is stored encapsulated. Window regulator according to claim 13, in which the clamping part ( 7 ) over a large area on one the transmission ( 61 - 66 ) receiving gear housing section ( 42 ) of the drive housing is supported. Window regulator according to Claim 14, in which the clamping part ( 7 ) with the gear housing section ( 42 ) by means of two screws ( 80 ) is screwed. Window regulator according to one of Claims 13 to 15, in which the housing shells ( 33 . 34 ) are locked together. Window regulator according to one of Claims 13 to 16, in which the clamping part ( 7 ) and a the control electronics ( 321 ) receiving section ( 32 ' ) of the drive housing on opposite sides of the guide rail ( 1 ) protrude. Window lift according to one of the preceding claims, the as a single or double-stranded rope or Bowdenzugfensterheber trained.