DE202011100077U1 - Drive assembly with different fasteners and fastener for attachment - Google Patents

Abstract

Drive assembly for a motor vehicle, in particular for a motor vehicle window lifter with at least three components: - a support part (FS) n housing (S) which has at least one gear element of the drive assembly, which is in operative connection with a power transmission element, and - one on the support part ( FS) fixed motor housing (M), which has a motor drive unit for driving the gear element, at least two of the three components (FS, S, M) being connected to one another via at least one connecting element (5) at a first connection point (1a; 1b) , and at least two of the three components (FS, S, M) are connected to one another via at least one further, identical connecting element (5) at a second connecting point (3), the respective connecting element (5) for connecting the components (FS, S , M; S, M) passes through an opening (A1, B1, C2) on one of the components (FS, S) and borders the opening (A1, B1, C2) on one en section (6.1, 6.2; 7) this ...

Description

The invention relates to a drive assembly for a motor vehicle according to the preamble of claim 1 and a connecting element according to the preamble of claim 22.

In a drive assembly of a motor vehicle usually several components or components must be space-saving and inexpensive connected to each other. In a window regulator assembly, as an example of a drive assembly, stands there inter alia the connection or connection of a cable drive housing housed therein a cable drum and the drive for the cable drum accommodating, separate motor housing with and on a support member in the foreground. Such a carrier part is, for example, a guide rail of the motor vehicle window lifter, an assembly unit carrying functional components of the window lifter or a door inner panel.

In order to be able to safely introduce the comparatively high forces occurring during the adjustment of the window pane into the carrier part, provision can be made for using separate connecting elements, such as a screw, for the connection of the components. Such a single connecting element is then used in particular to connect at least the cable drive housing or the motor housing to the carrier part.

Furthermore, in order to provide as few connecting elements as possible, a single connecting element is also used to simultaneously connect both the cable drive housing and the motor housing with the support member and to fix it. Here, for example, a screw is realized in which a screw is inserted as a connecting element in aligned openings or holes of the support member, the cable drive housing and the motor housing, wherein the screw head to a (upper) component clamped. By screwing the threaded portion of the screw in a (bottom) component or by screwing into an attacking on the bottom component nut thus three components are clamped together.

In practice, it has hitherto been customary to use the same connecting element, irrespective of how many components are to be connected to one another. In the course of using different materials for the individual components, however, the problem has now been recognized that not all types of component connections can be performed permanently and safely in a window regulator assembly with one and the same connection element.

So far, for example, takes place a compound of metallic guide rail, plastic cable drive housing and motor housing and a compound of plastic cable drive housing and motor housing alike with a screw with flat head geometry. In this case, the head of the screw lies with its flat bottom either on the metallic (in the connection of the guide rail with the cable drive housing and / or the motor housing) or on the plastic cable drive housing (in the connection of the cable drive housing with the motor housing) and the threaded portion of Screw is screwed into a bore of the motor housing. It has now been shown that the operation of a motor vehicle window lifter, the biasing force of the screw, the head rests with the flat bottom on the metallic guide rail, reduced. This can lead to a relative movement of the motor housing and the cable drive housing with respect to the guide rail. This in turn may cause audible noise to the vehicle occupant.

To solve this problem, it would be conceivable, for that connection point (s), in which the head of the connecting element rests against the metallic component (in the above example: the guide rail or another metallic support part), to use a different connection element than at that connection point in which the head of the connecting element rests against the plastic component (the cable drive housing). With such a solution, however, the disadvantage is associated that must be differentiated during assembly between the respective connecting elements, so that a wrong connection element is not accidentally used and the problems described above may be further increased.

The same problem occurs in other drive assemblies within a motor vehicle, in which a support member, a housing for a transmission element and a motor housing are to be connected together. Exemplary here are drive assemblies for adjusting the adjustment of a motor vehicle seat or for adjusting individual parts of a motor vehicle seat, such. As a headrest, called.

The present invention is therefore based on the object to overcome the disadvantages mentioned above in a drive assembly and in particular to provide an improved drive assembly, in which the different connections between the components of the drive assembly can be better taken into account without complicating the assembly of the drive assembly.

This object is achieved both with the drive assembly according to the invention of claim 1 as well as with a connecting element according to claim 20 solved.

• – ein Trägerteil,
• – ein an dem Trägerteil festgelegtes Gehäuse, das wenigstens ein Getriebeelement der Antriebsbaugruppe, das mit einem Kraftübertragungselement in Wirkverbindung steht, aufweist, und
• – ein an dem Trägerteil festgelegtes Motorgehäuse, das eine motorische Antriebseinheit zum Antrieb des Getriebeelements aufweist.

A drive assembly according to the invention therefore has at least three components:

• A support part,
• - A fixed to the support member housing, which has at least one transmission element of the drive assembly, which is in operative connection with a force transmission element, and
• - A fixed to the support member motor housing having a motor drive unit for driving the transmission element.

At least two of the three components mentioned are connected to each other via at least one connecting element at a first connection point and at least two of the three components - which may be identical or different to the first-mentioned two components - are connected to one another via at least one further, identical connecting element at a second connection point , In this case, the respective connecting element always passes through an opening on one of the components for the connection of the components and is clamped against a section of this component which projects over the opening. Furthermore, the portion at which the connecting element rests against the first connection point is made of a different material than the portion against which the further connection element bears against the second connection point.

The drive assembly according to the invention is further distinguished by the fact that in each case two areas are formed for clamping attachment with a section bordering the respective opening on the connecting element for the at least two connecting points and the two openings and the connecting element are coordinated so that the one connecting element at the first connection point with another area at the associated portion clamped against the other, identically formed connecting element at its associated portion at the second connection point.

As a result, thus only one connecting element or a type of connecting element is provided, which in combination with the opening on the (upper) component, to which the connecting element is applied by clamping, in each case one of two possible types of fastening. In this case, the individual types of attachment are predetermined by the two regions on the connecting element, of which - depending on the geometry of the opening - only one or only the other area with the associated, the opening-bordering section can interact. It can thus be ensured that a (first) region of the connecting element is designed specifically for a first type of component connection (eg for clamping against a section of plastic), while the other (second) region is specifically designed for a second type of component Part connection (eg., For clamping of the connecting element to a metallic portion) is formed.

It is thus possible to take into account the different requirements of the respective component connection, which result essentially from the materials used for the components to be connected, without having to use different connecting elements for the individual component connections.

Under the clamping system of the connecting element is hereby understood otherwise that the components are held together by a clamping connection via the connecting element, as z. B. is also the case with a screw or a rivet.

A transmission element may be formed for example by a cable drum of a window lift, which is operatively connected to a cable as a force transmission means to adjust a window pane. In general, a transmission element of the drive assembly is thus understood to be an element which converts a torque provided by the drive unit. The converted torque is passed on to a power transmission means, by means of which then takes place an adjustment of a motor vehicle part, such as. As the adjustment of a window, a seat, an armrest or a headrest. A drive assembly according to the invention can thus be used, for example, also for an adjusting device of a motor vehicle seat, an armrest or a headrest.

In the case of a drive assembly designed as a window regulator assembly, the carrier part is preferably a guide rail which predetermines a guideway for a window pane to be adjusted by means of the window regulator subassembly. Alternatively, however, the carrier part may also be, for example, an assembly carrier or a door wall, in particular a door inner panel.

The housing accommodates in this case preferably a winding element in the form of a cable drum from which a cable can be unwound as a pulling means of a window lifter or to which the cable is wound to adjust a motor vehicle window glass. The housing, which houses a drum and rotatably supports, is accordingly also referred to as a cable drive housing. Optionally, in or on the housing still (more) Parts of a transmission gear provided to convert a provided by the motor drive unit torque.

Of course, a drive assembly according to the invention can also be designed for a motor vehicle window lifter, in which the adjustment of the window pane not by means of a cable, but by means of another power transmission means, for. B. by means of a meshing with a rack pinion.

The motor drive unit is usually provided with the motor housing as a prefabricated, separate unit which is to be fixed to the support member for assembling the drive assembly as well as the vorfüeitgte (cable drive) housing.

The connecting element is preferably a screw, a pin or a bolt which is formed on its head, on which a tool can engage, and / or on its adjoining shaft with the two (geometrically) different regions is to establish depending on the application with over one or the other area a clamping contact.

Accordingly, it is preferred that the connecting element is elongated and / or has a threaded portion which is screwed into at least one of the components.

For example, the connecting element may be a screw provided with a self-tapping thread. This allows a relatively inexpensive installation. Of course, it is alternatively possible to provide a nut for the screw. The threaded portion of the screw is thus passed through all the components to be connected and protrudes at the head of the screw opposite (lowest) component at least partially from a bore to screw a nut on it can.

In a preferred embodiment, an area of the connecting element comprises a substantially planar surface (running transversely or inclined to the direction of extension of the connecting element), which bears in a clamping manner on one of the two connecting points on a section bordering the opening. This is to ensure that the connecting element rests flat against the section. For example, in the case of a connection with a screw, the edge of the opening through which the screw is passed is deformed, at least slightly, so that a greater clamping force can be applied via the formation of a substantially flat surface on the clamping region.

Accordingly, at least one of the openings and the connecting element are preferably matched to one another such that the connecting element for its clamping system at least slightly deforms the section bordering the associated opening, so that the connecting element counteracts a torque introduced into the interconnected component.

The substantially planar surface of a region of the connecting element may extend substantially parallel to a section which surrounds the opening and / or run essentially transversely to a longitudinal direction of extension of the connecting element. Usually, this is understood to mean that such a surface is formed by the underside of a head of the connecting element.

Furthermore, in a (other) region of the connecting element, a substantially planar surface may be provided, which extends inclined to a reference plane defined by the opening. This is understood to mean, for example, a region of the connecting element which has a countersunk head geometry.

Accordingly, the inclined surface may be formed by a substantially cone-shaped portion which tapers along an extending direction of the connecting member.

In this connection, it is preferred that the one connecting element at the one connection point is in clamping engagement with the surface of the one (first) region substantially parallel to the associated section, and the other, identical connecting element at the other connection point with the inclined surface of the other ( second) area clamped.

A concrete embodiment provides based on that the two regions of the connecting element are each formed geometrically different and immediately follow each other along a longitudinal direction of the connecting element. Thus, for example, a screw, a pin or a bolt is provided as a connecting element, wherein the head of the respective connecting element has a flat head geometry in a first region, to which a second region with a countersunk head geometry adjoins the shaft of the connecting element in its longitudinal direction. In the case of a screw, a shaft piece with a conical section (corresponding to the Geometry with a countersunk screw). In the longitudinal direction of the screw then follows the threaded portion.

About the two geometrically different areas with extending transversely to the longitudinal direction surface on the one hand and inclined to the longitudinal direction extending surface on the other hand, a window lifter assembly is achieved in which the flat, transversely extending surface (with the flat head geometry) is clamped against a plastic component, while the inclined Surface (the area with the countersunk head geometry) rests against a metallic component of the window regulator assembly by only the dimensions of the opening of the respective (closest to the top, top) component at the individual connection points are formed differently.

So is achieved via the inclined surface (with the countersunk head geometry) in conjunction with the associated opening, that the connecting element is centered at the one connection point in the associated opening. In addition, in this case, the section bordering the opening is (more) deformed or bent over in the direction of insertion of the connecting element into the opening and thus acts more effectively against a torque introduced into the components, so that the components are also loaded over a longer period of time a torque does not lead to an undesired release of the realized with the connecting element component connection.

In a further development of the invention it is further provided that at the one (first) connection point via a connecting element all three components (support member, housing with gear element and motor housing) are interconnected and at the other (second) connection point via a connecting element only two of the three Components are connected together.

Furthermore, it is of course possible to provide at least one further connection point at which three or two of the components are connected to one another via a further identically formed connecting element.

A further aspect of the present invention is also the provision of a connecting element according to claim 22.

Such a connecting element according to the invention is designed and provided according to the above-mentioned explanations to connect at least two components together by the connecting element engages through an opening on one of the components to be connected and clamped against a portion of this component bordering the opening. A connecting element according to the invention is further distinguished by the fact that two areas are provided for clamping engagement with a section bordering the opening and the two areas are configured geometrically differently such that only one or only the other area clamps depending on the size of the opening can come.

According to what has been described above, such a connecting element is preferably elongated, wherein the longitudinal direction of the connecting element is understood to mean that direction of extension of the component that is directed from one end of the connecting element along an insertion direction of the connecting element into the respective opening of the (upper) component has other components to be joined.

Preferably, the connecting element is designed as a screw, a pin or a bolt. In this case, the head of the respective connecting element in a first region has a flat head geometry, to which a second region with a countersunk head geometry adjoins the shaft of the connecting element in its longitudinal extension direction.

Incidentally, it should also be pointed out that the connection of the at least two components of the drive assembly to a connection element regularly means such a connection, by means of which the components are fixed relative to one another in a relative position. Accordingly, during assembly of the drive assembly, the components to be connected are (finally) fixed to one another via a connecting element. It is of course conceivable that via the connecting element a releasable connection z. B. is provided in the form of a screw connection.

Further advantages and features of the present invention will become apparent in the following description with reference to the figures.

Show it:

1 a section of an embodiment of a drive assembly according to the invention for a window with a guide rail as a support member, a cable drive housing and a motor housing in side view;

2A a sectional view of the cut along the section AA embodiment of the 1 ;

2 B a sectional view of the cut along the section BB embodiment of the 1 ;

2C a sectional view of the cut along the section line CC embodiment of the 1 ;

3 a detail view of a in the embodiment of the 1 used, inventive connecting element.

1 shows a side view of a section of an embodiment of a drive assembly according to the invention in the form of a window regulator assembly in which a support member in the form of a metallic guide rail FS with a cable drive housing S and a motor housing M is connected. The guide rail FS provides a guideway for a window pane of a motor vehicle, not shown here. The adjustment of the window is carried out via a flexible traction means, for. B. here a cable or Bowden cable (not shown), which is wound or unwound by a motor-driven winding element in the form of a cable drum. The cable drum thus converts a torque provided by a drive unit and can thus be seen as a transmission element of the drive assembly for a motor vehicle window lifter shown here. Of course, but more gear elements, z. B. in the form of gears, be provided.

The cable drum or the winding element is presently housed in a cable drive housing S made of plastic and is driven by a motor drive unit which is accommodated in the motor housing M. The control of the motor drive unit takes place via an electronic control unit E, which is also arranged in or on the motor housing M.

In order to be able to guide the cable pull of the window lifter purposefully from and to the winding element, the cable drive housing S has two molded cable guides S _A and S _B. These are designed as (hollow) cylindrical extensions and have a holder for a shell of the cable. Along the cable guides S _A and S _B , the cable is guided from the interior or in the interior of the cable drive housing S, where the cable drum is located.

For assembling the window regulator assembly, both the cable drive housing S and the motor housing M are to be fixed to the guide rail FS and the individual components (guide rail FS, cable drive housing S and motor housing M) to be interconnected. This is done on the one hand via positioning pins 2 , via which a (temporary) arrangement of the cable drive housing S and / or the motor housing M takes place on the guide rail FS, as well as via (first and second) connection points 1a . 1b and 3 , on each of which a connecting element 5 is provided in the form of a screw. An attachment point 4 in turn serves the connection of the window regulator assembly to a door inner panel, not shown here.

While the positioning pin 2 For example, on the cable drive housing S are formed and each engage in a designated through hole or opening of the guide rail FS with scraper ribs, so that the cable drive housing S is initially arranged in a predetermined relative position on the guide rail FS, serve the connection points 1a . 1b and 3 the permanent fixation of the individual components of the window regulator assembly. So would be through the over the positioning pins 2 provided positive connection does not ensure that the cable drive housing S and the motor housing M permanently immobile relative to the guide rail FS remain fixed when applied to these compounds during operation of the motor vehicle window lifter changing forces. These alternating forces arise from the alternating raising and lowering of the window pane, for which the rotatably mounted cable drum of the cable drive housing S must be driven by the motor drive unit in the motor housing M in different directions of rotation. For the fixation of the intended relative positions of the three components shown to each other therefore additional, separate fasteners 5 , usually in the form of screws.

Due to the attacking on the guide rail FS in operation, relatively grollen forces this is also made of metal. The cable drive housing S as well as possibly also the motor housing M are in contrast made of plastic for weight reduction.

In the case of plastic components, the use of countersunk head screws has been shown to be disadvantageous because the head of the screw, which has a substantially conical shaft, is in some cases considerably damaged in its clamping engagement with the plastic material. Therefore flat head screws or screws with a flat head geometry are preferred. The screw heads of flat head screws have a flat, extending transversely to the longitudinal direction of the screw underside, via which the screw head then clamped to the component or the opening-bordering portion of the component, through which the screw is passed.

So not different screws or fasteners 5 must be used to connect to the individual components of a window regulator assembly, flat head screws were previously used in practice for those compounds in which the screw head to the metallic guide rail FS clamped. However, it has been found that the necessary for fixing biasing force can not be permanently maintained and it is possible after a long period of operation that the cable drive housing S and / or the motor housing M move relative to the guide rail FS when the window is adjusted. The use of different fasteners at the first joints 1a . 1b , on which a clamping system is provided on the metallic guide rail FS, on the one hand and at a second connection point 3 on which a clamping system is provided on the plastic cable drive housing S, on the other hand, is considered disadvantageous. Thus, the use of different fasteners would entail the risk of resorting to the wrong fastener during manual assembly.

In the present case is now provided, both at the first connection points 1a and 1b in which both the cable drive housing S and the motor housing M on the guide rail FS, each with a single connection element 5 be fixed to each other, as well as at the second connection point 3 in which only the cable drive housing S and the motor housing M are fixed to each other, identical connecting elements 5 to use. A single connector 5 has two geometrically differently configured (clamping) areas 50 . 51 on, so that depending on the dimension of an opening A1, B1 or C2 on the guide rail FS or the cable drive housing S, through which the connecting element 5 is to introduce, only one (first) area 50 or the other (second) area 51 on the relevant component (support member in the form of the guide rail FS or cable drive housing S) can clamped. This is especially true in terms of the sectional views of the 2A . 2 B and 2C illustrates the sections along section lines AA, BB and CC in the 1 represent.

The 2A and 2 B show two along the longitudinal direction of the guide rail FS spaced from each other first connection points 1a and 1b at which a head or head section 5.1 of the connecting element 5 (in the form of a screw) bears against the metallic guide rail FS and by means of the connecting element 5 the cable drive housing S and the motor housing M are connected to the guide rail FS and fixed relative to each other. In the 2C In contrast, illustrated in detail, as with an identically formed connecting element 5 only the cable drive housing S made of plastic is connected to the motor housing M and fixed, in which case the head section 5.1 clamped to the cable drive housing S made of plastic.

At the junction 1a of the 2A passes through the connecting element 5 a designated opening A1 in the guide rail FS and a through hole or bore A2 of the cable drive housing S and opens with a threaded portion 5.2 in a through hole A3 of the motor housing M. The threaded portion 5.2 of the connecting element 5 is in this case provided with a self-tapping thread, so that the connecting element can be screwed into the through hole A3 of the motor housing M to the three components at this (first) connection point 1a to fix each other.

At the head section 5.1 of the connecting element 5 are two geometrically different areas 50 . 51 formed, with which the connecting element 5 - Depending on the dimensions of the (insertion) opening A1, B1 or C2 - optionally clamped against the component that the head portion 5.1 is closest. In the 2A and 2 B this is the guide rail FS and in the 2C the cable drive housing S.

The one (first) area 50 in this case comprises a flat, planar surface which is transverse to the longitudinal direction of the connecting element 5 runs and accordingly corresponds in this case the flat bottom of the screw head. That is at this first area 50 on the shaft of the connecting element 5 in the direction of the threaded portion 5.2 subsequent further (second) area 51 has one to the area of the first area 51 and to the longitudinal direction of the connecting element 5 inclined, circumferential surface on. The thus flat surface of the second area 51 is thus present by a to the first area 50 formed immediately subsequent cone-shaped shoulder extending in the longitudinal direction of the connecting element 5 rejuvenated.

In other words, has the connecting element designed as a screw 5 the present embodiment at its head portion 5.1 two immediately adjoining areas 50 . 51 to the clamping attachment, whereby a first area 50 a flat head geometry and a second area 51 has a countersunk geometry.

By now an opening A1 of the guide rail FS has a diameter which is less than a maximum diameter of the cone-shaped shoulder in the second region 51 , is ensured that the connecting element 5 with the inclined or inclined surface of the cone-shaped shoulder against the edge of the opening A1 and thus against an opening A1 bordering contact portion 6.1 the guide rail FS is pressed and thereby realized a clamping connection when the connecting element 5 is screwed into the bore A3 of the motor housing M.

This is one over the connecting element 5 applied biasing force over a longer period of operation, as with an investment of the flat bottom of the head section 5.1 or the first area 50 on the metallic guide rail FS would be the case. The connecting element 5 In this case, it can only be screwed into the motor housing M as far as it is intended that the underside of the head section 5.1 and thus the first area 50 still from the investment section 6.1 is spaced. This is due to a distance d between the underside of the head section 5.1 and the investment section 6.1 the guide rail FS in the 2A clarified. The first area 50 thus stands from the opening A1 and the contact section 6.1 out.

Also at the other (first) junction 1b in the 2 B Illustrated in detail is about the countersunk geometry in the second area 51 achieved that only the second area 51 with an abutting the (insertion) opening B1 conditioning section 6.2 the guide rail FS comes into contact with the guide rail FS, the cable drive housing S and the motor housing M via a further, identically formed connecting element 5 to fix each other.

Incidentally, here too, through holes B3 and B2 provided on the motor housing M and the cable drive housing S are aligned with the opening B1 of the guide rail FS. The section of the cable drive housing S to be connected is thus arranged between the motor housing M and the guide rail FS and the connecting element 5 is screwed from the (upper) side of the guide rail FS through the through hole B2 having portion of the cable drive housing S through into a portion with the through hole B3 of the motor housing M.

At the (second) junction 3 which, on average, in the 2C is shown, via an identically formed connecting element 5 only the cable drive housing S and the motor housing M connected to each other and fixed together.

The connecting element 5 lies here with the first area 50 at a section 7 of the cable drive housing S, which the (insertion) opening C2 for the connecting element 5 at the second junction 3 bounded. The size of the opening C2 is accordingly on the connecting element 5 matched that second area 51 is completely passed through the opening C2 with the cone-shaped shoulder and only the first area 51 of the connecting element 5 clamped to the abutment section 7 the cable drive housing S can abut clamping to the cable drive housing S at the second connection point 3 firmly to the motor housing M to connect. The opening C2 on the cable drive housing S at the second connection point 3 is therefore larger than the openings A1 and B1 of the guide rail FS at the two first connection points 1a and 1b or has a larger diameter than these openings.

At the connecting element 5 is thus a flat head geometry in the first region in the present embodiment 50 with a countersunk geometry in the second area 52 combined so that, depending on the size or diameter of an (insertion) opening A1, B1 or C2, via which the connecting element 5 is to introduce the connection of the relevant components, either with the first area 50 or with the second area 51 clamped on a section which borders the opening A1, B1 or C2 6.1 . 6.2 respectively. 7 is applied.

The 3 illustrates a single connector in a detail view 5 , Starting from the underside of the screw head with the flat head geometry or the corresponding area of the first area 50 the connecting element extends substantially cylindrically over a length L. This is followed by the first area 50 immediately the cone-shaped heel of the second area 51 on, by an indentation or a paragraph 52 from the threaded portion 5.2 is disconnected.

About the inventive design of a drive assembly, it is thus possible with identically shaped connecting elements 5 at different connection points 1a . 1b and 3 form different component connections, in which - depending on the material - by the choice of the diameter of an insertion opening A1, B1 or C2 one of two specifically trained area 50 . 51 with the (top) to be connected component of the drive assembly comes into contact. In particular, this makes possible an embodiment of a window regulator assembly according to FIGS 1 and 2A to 2C , at the two connection points 1a and 1b a metallic guide rail FS is permanently securely connected to both a plastic cable drive housing S and a motor housing M and in which the plastic cable drive housing S and the motor housing M at a further different connection point 3 permanently securely connected to each other.

Furthermore, it is achieved that the connecting element 5 at the first two junction 1a . 1b is centered in the associated opening A1 or B1 of the guide rail FS ( 2A and 2 B ).

In addition, these openings A1 and B1 and the connecting element 5 so matched to each other that the connecting element 5 for its clamping system in the section surrounding the associated opening A1, B1 6.1 . 6.2 "Digs", so the edge of the opening A1 and B1 so at least slightly deformed. The connecting element 5 thus deforms during fixation over its second area 51 (With the countersunk head geometry) the edge of the respective opening A1, B1, so that the connecting element 5 counteracts a torque introduced into the interconnected components (FS, S, M) or provides a support against such torques. About the (stronger) deformation in the insertion direction of the connecting element 5 due to the countersunk geometry at the first connection points 1a and 1b Therefore, a release of the component connection can be reliably prevented, even if in the operation of the window lifter changing torques in the first connection points 1a . 1b be initiated.

Notwithstanding the illustrated embodiment of a window regulator assembly, it is of course conceivable to provide an alternative support member instead of the guide rail FS, such. B. a subframe of a door module or a door wall, in particular a Türinnenwandung.

LIST OF REFERENCE NUMBERS

1a, 1b

(first) connection point

2

Positionierzafen

3

(second) connection point

4

fastening point

5

connecting element

5.1

head

5.2

threaded portion

50

first area with flat contact surface (flat head geometry)

51

second area with inclined support surface (countersunk head geometry)

52

paragraph

6.1, 6.2

Contact section of the guide rail

7

Contact section of the cable drive housing

A1, B1

Opening / bore of the guide rail

A2, B2, C2

Opening / bore of the cable drive housing

A3, B3, C3

Opening / bore of the motor housing

d

distance

e

control electronics

FS

guide rail

L

length

M

motor housing

S

Cable drive housing

S _A , S _B

cable guide

Claims (26)

Drive assembly for a motor vehicle, in particular for a motor vehicle window lifter with at least three components: - a carrier part (FS), - a housing (S) fixed to the carrier part (FS), which is at least one transmission element of the drive assembly, which is in operative connection with a force transmission element, a motor housing (M) which is fixed to the support part (FS) and has a motor drive unit for driving the transmission element, at least two of the three components (FS, S, M) being connected via at least one connecting element ( 5 ) at a first connection point ( 1a ; 1b ), and at least two of the three components (FS, S, M) via at least one further, identical connecting element ( 5 ) at a second connection point ( 3 ) are connected to each other, wherein the respective connecting element ( 5 ) for the connection of the components (FS, S, M, S, M) passes through an opening (A1, B1, C2) on one of the components (FS, S) and on a section (A1, B1, C2) bordering section (FIG. 6.1 . 6.2 ; 7 ) of this component (FS; S) clampingly applies, and wherein the connecting element (FS) 5 ) at the first connection point ( 1a ; 1b ) on a section ( 6.1 . 6.2 ) made of a material other than that section ( 7 ), to which the further connecting element ( 5 ) at the second connection point ( 3 ) is applied, characterized in that - on the connecting element ( 5 ) two areas each ( 50 . 51 ) to the clamping system with a respective opening (A1, B1, C2) bordering section ( 6.1 . 6.2 . 7 ) are formed and - the two openings (A1, C2, B1, C2) and the connecting element ( 5 ) are coordinated so that the one connecting element ( 5 ) at the first connection point ( 1a . 1b ) with another area ( 50 ; 51 ) at the assigned section ( 6.1 . 6.2 ; 7 ) clamped as the other, identically formed connecting element ( 5 ) at its associated section ( 7 ; 6.1 . 6.2 ) at the second connection point ( 3 ). Drive assembly according to claim 1, characterized in that the connecting element ( 5 ) is formed elongated. Drive assembly according to claim 1 or 2, characterized in that the connecting element ( 5 ) a threaded portion ( 5.2 ) which is turned in at least one of the components (FS, S, M). Drive assembly according to one of the preceding claims, characterized in that an area ( 50 . 51 ) of the connecting element ( 5 ) comprises a substantially planar surface, which at one of the two connection points ( 1a . 3 ; 1b . 3 ) at a section (A1, B1, C2) bordering the opening (A1, B1, C2) 6.1 . 6.2 . 7 ) is clamped. Drive assembly according to one of the preceding claims, characterized in that an area ( 50 ) of the connecting element ( 5 ) comprises a substantially planar surface located at one of the two connection points ( 1a . 3 ; 1b . 3 ) substantially parallel to a portion (C2) bordering the opening ( 7 ) extends and / or substantially transversely to a longitudinal direction of the connecting element ( 5 ) runs. Drive assembly according to one of the preceding claims, characterized in that an area ( 51 ) of the connecting element ( 5 ) comprises a substantially planar surface which extends inclined to a reference plane defined by the opening (A1, B1, C2). Drive assembly according to claim 6, characterized in that the inclined surface is formed by a substantially conical portion extending along an extension direction of the connecting element ( 5 ), wherein the direction of extension of the component (FS, S) to which the connecting element ( 5 ) bears in a clamping manner, in the direction of the at least one further component (S, M) points. Drive assembly according to claim 5 and one of claims 6 or 7, characterized in that the one connecting element ( 5 ) at the one connection point ( 1a . 1b ) with the inclined surface of the one area ( 51 ) clamped and the other, identical connecting element ( 5 ) at the other connection point ( 3 ) with the to the assigned section ( 7 ) substantially clamped parallel surface of the other area. Drive assembly according to claim 8, characterized in that the inclined surface of the one area ( 51 ) at the junction ( 1a . 1b ) is applied in a clamping manner, at which with the connecting element ( 5 ) The three components (FS, S, M) are interconnected. Drive assembly according to one of claims 6 to 9, characterized in that the connecting element ( 5 ) at one of the connection points ( 1a . 1b . 3 ) over the area ( 51 ) with the inclined surface in such a way at the associated, the opening (A1, B1) bounding portion ( 6.1 . 6.2 ) clamped that the other area ( 50 ) from the associated bounding section ( 6.1 . 6.2 ) is spaced. Drive assembly according to claim 10, characterized in that the other area ( 50 ) protrudes from the opening (A1, B1). Drive assembly according to one of the preceding claims, characterized in that both areas ( 50 . 51 ) of the connecting element ( 5 ) are each formed geometrically different and immediately along a longitudinal direction of the connecting element ( 5 ) connect to each other. Drive assembly according to claim 12, characterized in that the connecting element is a screw ( 5 ), a pin or a bolt, the head ( 5.1 ) of the respective connecting element in a first area ( 50 ) has a flat head geometry, to which on the shaft of the connecting element ( 5 ) in its longitudinal direction a second area ( 51 ) with a countersunk geometry connects. Drive assembly according to one of the preceding claims, characterized in that at least one of the openings (A1, B1) and the connecting element ( 5 ) are coordinated so that the connecting element ( 5 ) at the one connection point ( 1a . 1b ) is centered in the associated opening (A1, B1). Drive assembly according to one of the preceding claims, characterized in that at least one of the openings (A1, B1) and the connecting element ( 5 ) are coordinated so that the connecting element ( 5 ) for its clamping installation the section (A1, B1) which surrounds the associated opening (A1, B1) ( 6.1 . 6.2 ) at least slightly deformed such that the connecting element ( 5 ) counteracts an introduced into the interconnected component (FS, S, M) torque. Drive assembly according to one of the preceding claims, characterized in that at the one connection point ( 1a . 1b ) via a connecting element ( 5 ) All three components (FS, S, M) are interconnected and at the other connection point ( 3 ) via a connecting element ( 5 ) Only two (S, M) of the three components (FS, S, M) are interconnected. Drive assembly according to one of the preceding claims, characterized in that at least one further connection point ( 1b ; 1a ) is provided at the three or two of the components (FS, S, M) with each other via a further identical formed connecting element ( 5 ) are interconnected. Drive assembly according to claim 17, characterized in that the three components (FS, S, M) at two first connection points ( 1a . 1b ) via exactly one connecting element ( 5 ) and two of the components (FS, S, M) at a second connection point ( 3 ) via exactly one identical connecting element ( 5 ) are interconnected. Drive assembly according to one of the preceding claims, characterized in that the carrier part is a guide rail (FS), an assembly carrier or a door wall, in particular a door inner panel. Drive assembly according to one of the preceding claims, characterized in that the housing (S) with the transmission element is a cable drive housing with a cable drum. Drive assembly according to one of the preceding claims, characterized in that at least one of the three components (FS, S, M) at least partially made of metal and at least one of the three components (S) is at least partially made of plastic, so that the connecting element ( 5 ) at a connection point ( 1a . 1b ) with an area ( 51 ) clamped to a metallic portion ( 6.1 . 6.2 ) and at the other connection point ( 3 ) with the other area ( 50 ) clamped to a section of plastic ( 7 ) is present. Connecting element for connecting components of a drive assembly, in particular a drive assembly according to one of the preceding claims 1 to 21, wherein the connecting element is designed and provided to connect at least two components together by the connecting element an opening (A1, B1, C2) on a the components to be connected (FS, S, M) passes through and at a the opening (A1, B1, C2) bordering section ( 6.1 . 6.2 ; 7 ) of this component (FS, S) bears in a clamping manner, characterized in that on the connecting element (FS) 5 ) two areas ( 50 . 51 ) to the clamping system at a section (A1, B1, C2) bordering the opening ( 6.1 . 6.2 . 7 ) of a component (FS, S) are provided and the two areas ( 50 . 51 ) are configured geometrically different such that depending on the size of the opening (A1, B1, C2) only one or only the other area ( 50 ; 51 ) can come to the plant by clamping. Connecting element according to claim 22, characterized in that a first region ( 50 ) of the connecting element ( 5 ) comprises a substantially planar surface which, when the connecting element is used as intended, 5 ) to the section (A1, B1, C2) bordering the opening (A1, B1, C2) 6.1 . 6.2 . 7 ) is facing. Connecting element according to Claim 22 or 23, characterized in that a second region ( 51 ) of the connecting element ( 5 ) comprises a surface inclined to a longitudinal direction of extension of the connecting element ( 5 ). Connecting element according to claim 24, characterized in that the inclined surface of the second region ( 51 ) is formed by a substantially cone-shaped portion, which tapers along the longitudinal direction. Connecting element according to one of claims 22 to 25, characterized in that the connecting element is a screw ( 5 ), a pin or a bolt, the head ( 5.1 ) of the respective connecting element in a first area ( 50 ) has a flat head geometry, to which on the shaft of the connecting element ( 5 ) in its longitudinal direction a second area ( 51 ) with a countersunk geometry connects.

Images