DE102004007924A1 - Wire drum housing for adjustment system or window winder used in road vehicle has bearing stub holding drum in semicircular housing with channels for wire under tension - Google Patents

Abstract

The The invention relates to a housing for receiving a cable drum an adjusting device for a motor vehicle having a lateral surface with guide means for a Cable drum has entraining traction means, with a bearing point for rotatably supporting the cable drum; with a wall of the housing that the Cable drum encloses along its lateral surface when in the housing is stored; and with a fuse element that is in the area of Wall of the housing is arranged and that of securing one along the lateral surface of a in the case to be stored rope drum serves. According to the invention, the securing element (5) formed elastically and by deformation in the radial direction (r) regarding the bearing (2) movable.

Description

The The invention relates to a housing for receiving a cable drum of an adjusting device for a motor vehicle according to the preamble of claim 1.

One such housing includes a bearing for rotatably supporting the cable drum; a (possibly multi-part) wall, the cable drum along their lateral surface engages when stored (at the bearing point) in the housing is; and a securing element which is arranged in the region of the wall of the housing is, in particular projecting from the wall of the housing in the direction of the bearing, and that serves to secure a traction device which the cable drum along her with guide means provided lateral surface wraps.

One such housing For example, for storage of the cable drum of a cable window lifter Serve for raising and lowering a window in one Motor vehicle has a flexible traction means which a cable drum wraps around and be moved by turning the cable drum so can that the window pane to be adjusted - depending on the direction of rotation of the Cable drum - raised or lowered. The cable drum is this via a transmission with a Drive, z. B. in the form of a drive motor, coupled to the generated to rotate the cable drum required drive torque.

The on the housing provided fuse element serves to a the cable drum encircling Traction means in the guide means (guide grooves) on the lateral surface to hold the cable drum, so slipping out of the traction device from individual guide grooves To prevent the cable drum, if this on the space provided for this purpose of the housing is stored. The fuse element is used in particular for security the traction means in the preassembled state of housing and cable drum, i. in front the installation of the housing and cable drum existing assembly in a motor vehicle window lifter (Transport lock).

in this connection there is a risk that during installation of the cable drum in the housing, d. H. when placing the cable drum on the designated bearing point of the housing, the traction means under the effect of (compared to the other edge sections of the housing) radially inwardly projecting securing element of a guide groove into another (adjacent) guide groove of the Cable drum pressed can be, so that the rope is late.

Of the The invention is therefore based on the problem, a housing of the to improve the aforementioned type on.

This Problem is inventively the features of claim 1 solved.

After that is the securing element is elastic and can be in the radial direction - related on the bearing of the housing - deform.

Consequently the fuse element during assembly, d. H. when installing the Cable drum in the housing, because of its elasticity in the radial direction to the outside give, thereby preventing the fuse element during Acting on a pulling the belt drum traction this from a guide groove into another guide groove on the lateral surface the cable drum pushes.

The Securing element has a stop surface, the bearing point of the housing or the lateral surface facing a mounted on this bearing point cable drum and in the preassembled state of housing and cable drum, so before their Installation in a motor vehicle window lifter, especially during transport a slipping of the traction means from the lateral surface of the To prevent cable drum, by moving radially on the traction means acts.

In order to the fuse element by elastic deformation sufficiently far in the radial direction to the outside, away from the bearing, is movable, is the securing element only in a subarea over a connecting portion connected to the wall of the housing and the rest on its side facing away from the bearing point spaced from the inner wall of the housing. D. h., On the side facing away from the bearing of the fuse element is a free space provided in the fuse element at elastic deformation can move radially outward, so that the required compliance in the installation of cable drum and housing is ensured. The fuse element can be easier Way in one piece on the housing, in particular be integrally formed on the (single or multi-part) wall of the housing.

The for storage of a cable drum provided bearing point of the housing can formed by a bearing element in the form of a (physical) bearing axis be that on a floor surface of the housing arranged, preferably in one piece is formed.

According to a preferred embodiment, the bearing point to a positive connection element positive holding a mounted on the bearing point cable drum, which may be formed for example by a projecting from the bearing radially outward projection. Due to the elasticity of the housing in the region of the elastic securing element, the corresponding form-fitting element can be made rigid, since the elasticity required in the production of the positive connection between a cable drum and the housing is provided by the securing element provided in the region of the housing wall. It is therefore not necessary to design the positive connection between the housing and the cable drum itself elastically (eg in the manner of a clip connection). Of course, if necessary, but also an inventively ausgestaltetes housing by means of an elastic latching connection (clip connection) are connected to a rotatably mounted in the housing cable drum.

The by the elasticity of the housing in the region of its housing wall (because of the elasticity the security element), a rigid positive connection for rotatably supporting a cable drum in the case to use has the further advantage that, as an alternative to a Positive connection also a riveted joint for rotatable mounting the cable drum in the housing (Especially in a base plate made of metal arranged housing with a metallic bearing in the form of a journal or Passage) can be used without affecting the cable drum modifications would be required. D. h., One and the same cable drum can - depending on the design of the floor area and the bearing of a housing designed according to the invention - with the corresponding housing by positive locking (in the case of a corresponding positive locking elements provided bearing point) or by riveting (in the case of one for the production a rivet joint deformable bearing point) are connected. Thus, no different tools for making different Rope drums for Locking connections on the one hand and riveting on the other hand required.

Farther includes the housing Management areas the as rope entrances or rope exits for a the interior of the case be supplied Traction means are used, the guide areas the traction means preferably lead such that this radially inward, towards the bearing of the housing or in the direction of the lateral surface of a mounted in the housing Cable drum is biased. This means that during operation of the Window lifter not acting on the traction means radial forces Outside on the securing element, but radially inward away from the Fuse element act, so this in the operation of the window regulator preferably is relieved.

For this can be provided that the leadership areas define two guide channels, one as a rope entrance and the other as a rope exit serves and the - of seen from the deposit - one Angle less than 180 °, in particular an angle between 160 ° and 180 °, particularly preferably one Angle between 170 ° and 180 ° (e.g. 175 °).

A Combination of an inventively designed housing with a stored therein on the bearing drum is by characterized the features of claim 18.

in this connection preferably engages through a bearing element forming the bearing element of the housing an associated bearing opening (Bearing bore) of the cable drum. The on the outer surface of the Cable drum provided guide means for a the cable drum defines looping traction means are preferably through guide grooves (Rope grooves) formed.

In order to reliably prevent when placing the cable drum on the designated bearing point of the housing that a cable drum on its outer surface wrap around the traction device can slip off the lateral surface, the securing element in placement or insertion of the cable drum to such a length that the is wrapped by the traction means axial portion of the cable drum during the entire assembly movement of the cable drum with respect to the housing is covered by the securing element. Under the mounting path of the cable drum relative to the housing is understood that part of the relative movement of the cable drum and housing when placing the cable drum on the housing, in which the (preferably positive) connection between the cable drum and housing is made and in which there are relative movements of cable drum and housing in the radial direction (relative to the bearing point for the cable drum) comes. (The relative movement between cable drum and housing is to be understood that for inserting the cable drum in the housing either the cable drum used in the stationary housing or the housing placed over the stationary cable drum or rope drum and housing are moved towards each other.) This is achieved in that, when the cable drum is inserted into the housing for the rotatable mounting of the cable drum on the bearing point of the housing provided therefor, a portion of the traction device looping around the cable drum in the axial direction (corresponding to the insertion direction of the cable drum into the housing) is always completely covered by the elastic securing element, to slip off to prevent the traction means of the lateral surface of the cable drum.

Further Features and advantages of the invention will become apparent in the following Description of exemplary embodiments be clear from the figures.

It demonstrate:

1a a perspective cross-section through a cable drive housing with a cable drum mounted therein;

1b a perspective view of the cable drive housing 1a without cable drum;

2a a perspective view of a development of the cable drive housing 1b ;

2 B a cross section through the cable drive housing according to 2a ;

3 a cross section through the cable drive housing according to 2a during assembly of a cable drum stored in the housing;

4 a perspective view of the cable drive housing according to 2a with a cable drum rotatably mounted therein.

In the 1a and 1b is a housing 1 . 3 . 4 shown as a cable drive housing for rotatably supporting a cable drum 8th on a storage site 2 in a floor space 1 of the housing is used.

The rope drum 8th forms part of an adjustment of a motor vehicle, such as a cable window lifter, and has for rotatable mounting on the bearing 2 the cable drive housing a bearing opening 8th and also an internal toothing 81 on, over the provided with a suitable externally toothed transmission element, a torque in the cable drum 8th can be introduced to a rotational movement of the cable drum 8th along one or the other direction of rotation about the bearing point 2 to generate defined axis of rotation D.

On a circular in cross-section outer peripheral surface (lateral surface 85 ) of the cable drum 8th are circumferentially extending guide grooves 86 (Rope grooves) is formed, which is for guiding a cable drum encircling drive means in the form of a flexible traction means, for. As a rope, serve. The bearing opening 80 forming bearing section and the axial adjoining thereto with an internal toothing 81 provided section of the cable drum 8th are with the the guide grooves 86 having outer circumferential surface 85 via radially extending webs 83 connected.

By coupling the traction device to the lateral surface 85 the rope drum 8th over the guide grooves provided there 86 generates a rotary motion of the cable drum 8th a corresponding movement of the rope drum 8th looping traction device. By the traction means on the other hand to be adjusted with a motor vehicle part, z. B. via a driver with an adjustable window of a motor vehicle door, is in operative connection, is a rotational movement of the cable drum 8th implemented via the traction means in an adjustment of the corresponding adjustment part, wherein the adjustment direction depends on the direction of rotation of the cable drum.

The rope drum 8th is in one in the 1a and 1b schematically illustrated cable drive housing 1 . 3 . 4 taken and there on its depository 2 rotatably mounted.

The cable drive housing is formed on a floor surface 1 , of the two integrally formed boundary walls 3 . 4 protrude the cable drive housing, which a the floor area 10 the cable drive housing forming portion of the bottom surface 1 enclose.

At this floor area 10 the cable drive housing is integrally the bearing point 2 provided in the form of a formed by a passage physical bearing axis, (molded). Between one directly to the ground area 1 subsequent base section 20 and a partially circumferential, radially outwardly projecting projection 21 of the passage 2 this is a constriction 22 on, which is the actual warehouse for the storage area in the form of a bearing opening 80 the rope drum 8th forms. The on the constriction 22 of the passage 2 rotatably mounted cable drum 8th is at the edge of its bearing opening 80 on the one hand, from the base section 20 of the passage 2 and on the other hand from the axially spaced, outwardly projecting projection 21 overrun, leaving the cable drum 8th with the edge of its bearing opening 80 positively between the base area 20 and the lead 21 of the passage 2 on its constriction 22 - Free to rotate - is held.

As based on 1a recognizable, is the partially circumferential projection 21 of the passage 2 in the radial direction r (cf. 1b ) pronounced different degrees to the placement of the cable drum 8th with its bearing opening 80 on the passage 2 to facilitate the cable drive housing.

When assembled, the lateral surface is 85 the rope drum 8th surrounded by the two walls 3 . 4 of the cable drive housing. In this case, the one wall extends 3 the cable drive housing annular or in cross-section circular over an angle of more than 180 ° before the with the guide grooves 86 provided lateral surface 85 the rope drum 8th and has one of the lateral surface 85 the cable drum opposite inner surface 30 on. At two end sections 31 . 32 is the first wall 30 the cable drive housing for forming a respective guide channel 6 . 7 for a rope drum 8th wrap-around traction means, in particular in the form of a rope, angled outwards.

The guide channels 6 . 7 are formed by the said angled end portions 31 . 32 the first wall 3 together with two opposite end sections 41 . 42 a second wall 4 that the first wall 3 is arranged opposite and also one of the lateral surface 85 the rope drum 8th facing inner surface 40 having. The second inner wall 4 However, it is not circular in shape, but rather is formed by two slightly acute angle to each other extending wall sections 4a . 4b , - related to the depository 2 - An angle α of less than 180 °, z. B. include an angle α = 175 °.

In the middle area of the second wall 4 in which the two wall sections 4a . 4b is the second wall 4 - from the depository 2 the cable drive housing seen - in a middle section 45 put something back and is there with a via a connecting section 51 integrally molded fuse element 5 Mistake. This has a first, the lateral surface 85 the rope drum 8th facing as stop or support surface serving surface 50 and a second, the lateral surface 85 opposite and the recessed (middle) section 45 the second wall 4 facing surface 52 on. Between this second surface 52 of the fuse element 5 and the recessed wall portion 45 the second wall 4 extends a free space F, ie, the middle wall portion 45 facing surface 52 of the fuse element 5 is from that recessed wall section 45 spaced in the radial direction r.

The fuse element 5 lies with its the lateral surface 85 the rope drum 8th facing surface 50 opposite that area of the passage 20 in which its outwardly projecting, partially circumferential projection 21 has the largest extent in the radial direction r to the outside. D. h., That at this point when placing the cable drum 8th on the passage serving as a storage location 2 the cable drive housing a relatively large relative movement in the radial direction r is required to the outside, to the cable drum 8th under a certain inclination with its bearing opening 80 over the lead 21 to push, with one at the projection 21 intended slope 23 supports.

Such a relative movement in the radial direction r is made possible by the elastic deformation of the securing element described above in the radial direction 5 that only has a connecting section 51 in the form of a connecting web at a lateral end with the second wall 4 is integrally connected, but otherwise by a free space F is spaced from this, so that the fuse element 5 can move into the said space F by deformation in the radial direction r.

Due to this elasticity of the securing element 5 It is ensured that this during the assembly of cable drum 8th and cable drive housing not with such a force on a in the guide grooves 86 the rope drum 8th extending traction means acts that this would be pushed out of the associated guide groove. Rather, there is the elastic securing element 5 upon application of radial forces and can be deformed in the radial direction r outward to trouble-free assembly of cable drum 8th and allow cable drive housing. A winding of the traction means during assembly, ie slipping of the traction means of a guide groove 86 in an adjacent guide groove is thereby prevented.

In the assembled state of cable drum 8th and cable housing, as in 1a represented, is then relaxed in the radial direction fuse element 5 in front of an assigned section of the lateral surface 85 the rope drum 8th so that it is out of the cable drive housing and the cable drum during storage and transportation 8th existing assembly slipping one of the lateral surface 85 the rope drum 8th prevents looping traction means.

If later the out of the cable drum 8th and the cable drive housing existing assembly in an adjustment of a motor vehicle, for. B. a window, is installed, then slipping of the traction means of the lateral surface 85 the rope drum 8th already no longer possible because of the then existing tension on the traction means. The security function of the security element 5 is no longer essential under these conditions.

Due to the mutually slightly angled course of the two guide channels 6 . 7 acting as cable entry and rope exit for a cable drum 8th on its outer lateral surface 85 serve umschlingendes traction means acts in the operation of the respective adjustment to a through these channels 6 . 7 run of the traction means a reaction force K in the radial direction inwards. This prevents that the traction means during operation of the corresponding adjusting the fuse element 5 loaded or dragged on this.

In the 2a and 2 B is a further education of the basis of the 1a and 1b shown cable drive housing, wherein the further developed drive housing in the 3 and 4 additionally together with a cable drum stored in it 8th is shown. In principle, the formation of the cable drive housing and the cable drum are correct 8th with the basis of the 1a and 1b described embodiment, wherein identical reference numerals are used to identify the match for matching assemblies. In the following, therefore, only slightly the differences between the in the 2a and 2 B . 3 and 4 shown arrangement on the one hand and in the 1a and 1b illustrated embodiment on the other hand be explained. Incidentally, the above comments on the 1a and 1b Referenced.

For one thing, this differs in the 2a . 2 B . 3 and 4 shown cable drive housing of which in the 1a and 1b shown in the size of the floor area 1 defining base plate from which the lateral boundary walls 3 . 4 stand out of the housing. The extent of this floor area 1 in the present case is considerably larger than that of the boundary walls 3 . 4 enclosed ground area 10 the actual housing and is with attachment points B for attachment of the housing to other vehicle components, eg. B. on a gear unit, in particular a transmission housing. In addition, the side boundary walls 3 . 4 the housing with stiffening ribs 35 provided, extending from the boundary walls 3 . 4 to the floor area 1 extend the housing base plate.

Another difference is that the serving as Seilein- and cable outlets guide channels 6 . 7 formed respectively by end sections 31 . 41 ; 32 . 42 the lateral boundary walls 3 . 4 of the cable drive housing, have a significantly greater length than in the case of 1a and 1b and that at the ends of these guide channels 6 . 7 each guide bushes 60 . 70 are provided which a defined supply of a traction device S to the respective channel 6 . 7 to ensure.

Incidentally, based on the 2a and 2 B particularly clear that the at the passage 2 partially circumferential projection 21 has a different expression in the radial direction r and that this projection 21 in an area (viewed in the circumferential direction) in the radial direction r elastic securing element 50 opposite, has the largest extent in the radial direction r.

Based 3 it can be seen that the fuse element 5 in the axial direction a at the same time corresponds to the direction along which the cable drum 8th and the cable drive housing are assembled during assembly, has a much larger extension (length L), than that with guide grooves 86 provided area of the lateral surface 85 the rope drum 8th with an axial extent T <L. This ensures that when assembling cable drum 8th and cable drive housing of the fuse element 5 opposite and with guide grooves 86 provided area of the lateral surface 85 the rope drum 8th in the axial direction a already completely from the securing element 5 is covered when the edge of the bearing opening 80 the rope drum 8th over the slope 23 at the lead 21 the storage of the cable drum 8th serving passage 2 slides and thereby performs a movement in the radial direction r. This will ensure that when assembling cable drum 8th and cable drive housing along the guide grooves 86 extending traction means S in the form of a rope already along the entire extension T of the guide grooves 86 in the axial direction a already from the securing element 5 is covered to prevent slipping out of parts of the traction means S from one of the guide grooves 86 and thus to prevent a winding of the traction means S.

The above based on the 1a to 4 described embodiment of a cable drive housing for supporting a cable drum of an adjusting device in a motor vehicle can be made both of plastic and metal, in particular sheet metal.

Claims (24)

Housing for receiving a cable drum of an adjusting device for a motor vehicle having a lateral surface with guide means for a cable drum entraining traction means, with - a bearing for rotatably supporting a cable drum, - at least one wall of the housing, which surrounds the cable drum along its lateral surface, if this is mounted in the housing, and - a securing element, which is arranged in the region of the wall of the housing and which serves to secure a along the lateral surface of a cable drum to be stored in the housing traction means, characterized in that the securing element ( 5 ) formed elastically and by deformation in the radial direction (r) be with the depository ( 2 ) is movable. Housing according to claim 1, characterized in that the securing element ( 5 ) a stop surface ( 50 ), that of the depository ( 2 ) facing the housing. Housing according to claim 1 or 2, characterized in that the securing element ( 5 ) by elastic deformation in the radial direction (r) with respect to the bearing ( 2 ) to the outside, away from the depository ( 2 ) is movable. Housing according to one of the preceding claims, characterized in that the securing element ( 5 ) via a connecting section ( 51 ) with the wall ( 3 . 4 ) of the housing is connected. Housing according to claim 4, characterized in that the securing element ( 5 ) on one of the storage sites ( 2 ) facing away ( 52 ) from an opposite wall section ( 45 ) the Wall ( 3 . 4 ) of the housing is spaced. Housing according to one of the preceding claims, characterized in that on the bearing ( 2 ) facing away ( 52 ) of the security element ( 5 ) A free space (F) is provided. Housing according to one of the preceding claims, characterized in that the securing element ( 5 ) in one piece on the housing, in particular the wall ( 3 . 4 ) of the housing, is molded. Housing according to one of the preceding claims, characterized in that the bearing point ( 2 ) is formed by a fixed bearing axis, in particular in the form of a passage. Housing according to one of the preceding claims, characterized in that the bearing point ( 2 ) at a floor area ( 10 ) of the housing is arranged. Housing according to one of the preceding claims, characterized in that the bearing point ( 2 ) is integrally formed on the housing. Housing according to one of the preceding claims, characterized in that the bearing point ( 2 ) a form-locking element ( 21 ) for the positive holding of a deposit on the depository ( 2 ) mounted cable drum ( 8th ) having. Housing according to claim 11, characterized in that the positive-locking element ( 21 ) by one of the depository ( 2 ) projecting radially outward projection is formed. Housing according to claim 11 or 12, characterized in that the positive-locking element ( 21 ) is rigid. Housing according to one of the preceding claims, characterized in that on the housing guide areas ( 6 . 7 ) are provided as Seilein- and exits for a to be supplied to the interior of the housing traction means (S). Housing according to claim 14, characterized in that the guide areas ( 6 . 7 ) are arranged and designed for such guidance of a traction means (S) that the traction means (S) radially inward in the direction (K) to the bearing point ( 2 ) is biased. Housing according to claim 14 or 15, characterized in that the guide areas ( 6 . 7 ) define two guide channels, one of which serves as a cable entrance and the other as a cable exit and which with respect to the storage ( 2 ) include an angle (α) of less than 180 °. Housing according to claim 16, characterized in that that of the guide areas ( 6 . 7 ) included angle (α) between 160 ° and 180 °, preferably between 170 ° and 180 °. Housing according to one of the preceding claims with a bearing on the ( 2 ) of the housing mounted cable drum ( 8th ). Housing according to claim 18, characterized in that the bearing point ( 2 ) of the housing is designed as a bearing element, which has a bearing opening ( 80 ) of the cable drum ( 8th ). Housing according to claim 18 or 19, characterized in that on the outer circumferential surface ( 85 ) of the cable drum ( 8th ) guiding means ( 86 ) are formed as guide grooves. Housing according to claim 20, characterized in that the extension (L) of the securing element ( 5 ) in the axial direction (a) is greater than the extent (T) of all guide grooves ( 86 ) plus the extent of the positive-locking element ( 21 ) of the depository ( 2 ) along this direction (a). Housing according to one of claims 18 to 21, characterized in that the securing element (S) in the axial direction (a) all opposite guide grooves ( 86 ) of the cable drum (S) completely covered. Housing according to one of claims 18 to 22, characterized in that the securing element ( 5 ) in the axial direction (a) a larger off elongation (L) than the lateral surface ( 85 ) of the cable drum ( 8th ). Housing according to one of claims 18 to 24, characterized in that the cable drum ( 8th ) is wrapped by a traction means (S).