DE102009053812A1 - Housing for accommodating a cable drum of an adjusting device for a motor vehicle - Google Patents

Abstract

The invention relates to a housing (2) for receiving a cable drum (4) of an adjustment device of a motor vehicle, having a bearing (6) for supporting the cable drum (4) in the housing (2), at least one housing section (16) containing the cable drum (4) circumferentially at least partially surrounds in the housing mounted state, and at least one guide (12, 14) for guiding a to the cable drum (4) to be looped flexible traction means (8) from the housing (2). The at least one guide (12, 14) has a peripherally closed end region (12).

Description

Technical area

The The invention relates to a housing for receiving a cable drum an adjustment of a motor vehicle. The housing has a bearing for storing the cable drum in the housing and a housing section which holds the cable drum in the Housing stored state circumferentially at least partially surrounds. Furthermore, the housing has at least one Guidance to guide one around the cable drum looping flexible traction device from the housing.

State of the art

Cable drum housing of the aforementioned type are known in the art. Known Cable drum housings are usually made of plastic and serve for receiving a as a transmission element for a flexible Pulling means serving cable drum.

One Such housing may, for example, for the storage of Cable drum of a motor vehicle window lift serve to lift and lowering a window glass in a motor vehicle a flexible Traction means, preferably an actuating cable with an inner and an outer train, which is around the cable drum is looped, and which by rotating the cable drum so movable is that a disc that has a driver with the flexible traction means is connected, raised or lowered can. The cable drum is for this purpose via a drive, the is in operative connection with the cable drum, driven. Furthermore the housing has at least one guide, along the to the cable drum to be looped flexible traction means is led out of the housing. As a rule are in the cable drum housing two guides provided to form on the driver a closed loop of rope.

DE 20 2006 011 276 U1 discloses a cable drum housing of the type mentioned. The cable drum housing there has guide areas, which serve as cable inputs or cable exits for the traction means and the insertion slots, through which the traction means is inserted perpendicular to its extension direction in the respective guide region.

On However, the flexible traction means act on the operation, for example, a window lift, enormous forces, the must be absorbed by the cable drum housing. To achieve the necessary stability, it is necessary to carry out the guidance areas very stably.

To achieve this goal are in accordance with DE 10 2006 011 276 U1 Known in the interior of the guide area reinforcing ribs known. In addition, it is known to stiffen the leadership areas externally by stiffening structures. For this purpose, stiffening struts or Verstreifungswände are known, which extend to the end of the guide area.

Alles These measures require a high use of materials and the use of high quality, very stable materials. The part price of a cable drum housing, however, is significantly influenced by Material and the material used. The necessary Stiffening measures thus increase the parts price for the cable drum housing.

task

task The invention is therefore a housing for receiving a Specify cable drum of an adjustment of a motor vehicle, which has a lower weight with high rigidity and the is inexpensive to produce.

Presentation of the invention

The Task is solved by a housing for recording a cable drum of an adjustment of a motor vehicle according to claim 1. Advantageous developments are the subject of the dependent claims.

One Inventive housing for receiving a cable drum of an adjustment of a motor vehicle has a bearing for storing the cable drum in the housing on and at least one housing section that holds the rope drum in the state stored in the housing circumferentially at least partially surrounds. Furthermore, at least one guide for guiding a flexible around the cable drum to be looped Pulling means from the housing or in the housing provided in the cable drum.

The at least one guide has, according to the invention, a peripherally closed end region. The circumferential closing of the end region has several effects. On the one hand, this reduces the elasticity in a direction transverse to the guide due to higher material usage in the guide area. Furthermore, the torsional rigidity of the end region increases. In addition, constrained conditions are created by the circumferentially closed end region, which prevent expansion of the guide in the end region. This results in a particularly rigid receptacle that is able to absorb the forces introduced on the cable drum housing particularly well at low deflections. This still requires that The necessary use of materials and the necessary quality of the material can be reduced, so that an inventive housing can be produced particularly inexpensively.

In addition, it is achieved with the aid of the invention that a flexible traction means, which is used in the pre-assembly of a drive unit in the housing and wrapped around the cable drum, can not slip out of the guide, as the flexible traction means by the circumferentially closed end so on the housing is determined that the flexible traction means can not slip out radially. In the prior art cumbersome measures to achieve this goal are necessary, for example, the provision of guide slopes at the slot in the end of the guide according to DE 20 2006 011 276 U1 that in order to function, requires a certain elasticity of the guide areas, otherwise the flexible traction means can not be used.

Of the peripherally closed end region has an opening on the front side for the implementation of the flexible traction means, so this out of the housing or into the housing is feasible.

When flexible traction means comes in particular a control cable with an outer train and a relative to the outer train determined inner cable in question. Then it can be provided that the External train of the control cable on the guide can be fixed or the end of the guide is a receptacle for has the outer train. Such control cables have the advantage of supporting forces via the outer pull can be included, which is a more variable train laying allow.

The Storage for rotatable storage of a cable drum can in be formed in a known manner, for example in the form of a Bearing axle or one of a protruding into the housing Output shaft of the drive. The bearing can be in one piece be formed with the housing or as a in the housing to be fastened, separate element.

A Development of the invention provides that the at least one Guide one to the closed end area subsequent having open management area. This allows a simpler Laying of the flexible traction device through the cable drum housing and a simpler looping around the flexible traction device to the in the housing mounted cable drum.

Prefers the open guide area is designed as a slot. This reduces the tendency to fouling in the area of flexible traction device and in the area of the cable drum. About that In addition, slipping out of the flexible traction device can be from the housing and unwinding of the traction means of the Effectively prevent the cable drum. Furthermore, slots have the least stiffness-reducing influence on the housing.

One Another advantage arises when the cable drum at least partially surrounding housing section is open and in the open management area. This leaves to realize production technology particularly simple, since the open guide area then merges into the cable drum area. In addition, it facilitates the laying of the flexible Pull means within the housing.

Prefers is a cover for the open areas of the housing intended. This reduces the tendency of the cable drum housing to become soiled.

Of Furthermore, it can be provided with advantage that in the open Guide area provided a run-on slope is.

such Run-up slopes have the advantage that a flexible traction means, which through the frontal opening of the circumferentially closed Endbereiches is passed, over the run-up slope is pushed into the area of the opening, so that the laying of the flexible traction device inside the housing facilitated. In this way, the pre-assembly can be considerably accelerate the adjustment.

Around to prevent the flexible traction device during the Operation of a mounted adjusting the run-on slope rubs and thus wears faster, is the run-on slope dimensioned such that these in a tensioned flexible Traction means does not come into contact with the run-up slope, but hovers over this. This can be achieved be that the run-up slope measured by a (imaginary) Inner surface of the guide area, in which the run-up slope is arranged, has a height, which is smaller than the distance between the said inner surface and the flexible traction means in the guide and around the cable drum Guided state, so in ready assembled state.

Of Furthermore, it can be provided with advantage that the end region as Hose socket is formed so that in the end an exact guidance the flexible traction means is given in a predetermined direction.

A further stiffening of the housing can be achieved if at least one stiffening section is provided, which stiffens the guide from the outside. In this way, the elasticity of the Ge be significantly reduced.

Of the Stiffening portion is preferred as a stiffening wall or stiffening strut formed, which is particularly easy in the manufacture of the housing can be provided, for example, in a plastic-sprayed Housing during the original molding.

Without negative practical influence on the stiffness of the housing ends the at least one stiffening section before or at the closed end area, so that essentially on the height of the open area of the housing extends. Without departing from the spirit, the stiffening section in an environment between transition of the closed end region to the open guide section.

Further Objectives, features and advantageous applications The invention will become apparent from the following description of a Embodiment with reference to the drawings. Make up all described and / or illustrated Features in their meaningful combination the subject of the present Invention, also independent of the patent claims and their remittances.

embodiment

The Invention will be explained with reference to an embodiment. Here are shown schematically:

1 an inventive cable drum housing in a first view;

2 an inventive cable drum housing in a second view and

3 a cable drum housing of the prior art.

embodiment

3 shows a cable drum housing 102 according to the prior art. The cable drum housing 102 serves to accommodate a cable drum 104 , which at a storage place 106 in the cable drum housing 102 is stored. The cable drum housing 102 surrounds the cable drum 104 essentially complete.

An inner cable 108 an actuating cable 110 is about an outer circumferential surface of the cable drum 104 looped and along a guide 112 from the cable drum housing 102 out or into this out. The leadership 112 has a slot 114 on, extending over the entire length of the guide 112 of the cable drum housing 102 extends.

The rope drum 4 is from the back, not shown, by means of a cable drum 104 rotatably connected drive, so that the inner cable 8th relative to the cable drum housing 2 is operable.

An end face 116 of the cable drum housing 102 is as a receptacle for a biasing device 118 for an outside train 120 of the control cable 110 intended. With the help of the pretensioner is the outer train 120 of the control cable 110 maintained tension, so that it does not tend to rattle.

The cable drum housing 102 has a base 122 on which among other fasteners 124 , For example, a bore has.

The base 122 has two stiffening walls 126 . 128 up, to the end of the lead 112 extend and in the embodiment shown directly in the region of the end face 116 the leadership 112 end up. Other known embodiments terminate in a region just before the end face. The stiffening walls 126 . 128 make up a significant portion of the total required material of the known cable drum housing 102 out.

1 In contrast, shows a comparison with the known embodiment 3 the same stiff, but much lighter inventive cable drum housing 2 , The cable drum housing according to the invention 2 serves for the storage of a rope drum 4 around a depository 6 , which is arranged in the cable drum housing according to the invention.

An inner cable 8th is about an outer circumferential surface of the cable drum 4 looped.

An actuating cable 10 is about a circumferentially closed trained leadership 12 in the cable drum housing 2 in and out of this out. The circumferentially closed guide 12 goes over into a slotted guidance area 14 , which in one the rope drum 4 surrounding open area 16 passes.

On a frontal surface 17 the leadership 12 is a receptacle for a biasing device 18 for an outside train 20 of the control cable 10 intended. The face 17 has an opening or hole through which the inner cable 8th in the cable drum housing 2 is insertable.

One Base 22 , in which among other fasteners in the form of holes 24 are provided has stiffening walls 26 . 28 on, the Be rich of the cable drum housing 2 stiffen in which the slot 14 is arranged. The stiffening walls 26 . 28 ends immediately at the area of the circumferentially closed, unslotted guide 12 , Compared with the stiffening walls 126 . 128 according to the known embodiment according to 4 can save a significant amount of material, shown in dashed lines as material savings 30 , Nevertheless, the cable drum housing according to the invention 2 just as stiff as the cable drum housing known from the prior art 102 ,

In the area of the slot 14 is also a starting slope 32 provided, which is adapted to the mounting on the front side 17 inserted inner cable 8th in the area of the slot 14 so far raise, that this is tangible by the installer and can be better laid.

The run-up slope 32 is dimensioned so that the inner cable 8th fully assembled, so wrap the cable drum 4 and under tension, the run-up slope 32 not touched anymore. The control cable 8th has one opposite the run-up slope 32 greater distance to a (possibly imaginary) floor area of the guide in the area of the run-on slope 32 on.

2 shows a plan view of a portion of the cable drum housing according to the invention 2 in cut view.

The pretensioner 18 protrudes over a recess in the face 17 in the lead 12 of the cable drum housing 2 into it. To the inner cable 8th to give the necessary freedom of movement, is a to the rope drum 4 widening area provided so that the inner cable 8th in every position on the cable drum 4 not with the cable drum housing 2 strikes. The extension of the open area also has stiffening effect on the cable drum housing 2 due to the higher wall thicknesses enabled thereby.

LIST OF REFERENCE NUMBERS

2

Cable drum housing

4

cable drum

6

depository

8th

Innenzug

10

control cable

12

guide

14

slot

16

open Area

17

face

18

biasing means

20

Outer slide

22

Base

24

fastener

26 28

stiffening walls

30

material savings

32

starting slope

102

Cable drum housing

104

cable drum

106

depository

108

Innenzug

110

control cable

112

guide

114

slot

116

face

118

biasing means

120

Outer slide

122

Base

124

fastener

126 128

stiffening walls

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 202006011276 U1 [0004, 0012]
• - DE 102006011276 U1 [0006]

Claims (10)

Housing for receiving a cable drum ( 4 ) an adjusting device of a motor vehicle, with a storage location ( 6 ) for storing the cable drum ( 4 ) in the housing ( 2 ), at least one housing section ( 16 ), the cable drum ( 4 ) in the housing mounted state circumferentially at least partially surrounds, and at least one guide ( 12 . 14 ) for guiding one around the cable drum ( 4 ) to be looped flexible traction means ( 8th ) out of the housing ( 2 ), characterized in that the at least one guide ( 12 . 14 ) a peripherally closed end region ( 12 ) having. Housing according to claim 1, characterized in that the at least one guide ( 12 . 14 ) to the closed end area ( 12 ) subsequent open management area ( 14 ) having. Housing according to claim 2, characterized in that the open guide area as a slot ( 14 ) is trained. Housing according to claim 2 or 3, characterized in that the cable drum ( 4 ) at least partially surrounding the mouse section ( 16 ) is open and in the open management area ( 14 ) passes over. Housing according to one of the preceding claims, characterized in that in the open guide area ( 14 ) a run-on slope ( 32 ) is provided. Housing according to claim 5, characterized in that the starting slope ( 32 ) a height of an inner surface of the guide area ( 14 ), which is smaller than the distance between the inner surface and the flexible traction means ( 8th ) in the leadership ( 12 . 14 ) and the cable drum ( 4 ) guided state. Housing according to one of the preceding claims, characterized in that the closed end region as a hose socket ( 12 ) is trained. Housing according to one of the preceding claims, characterized in that on the housing ( 2 ) at least one the leadership ( 12 . 14 ) stiffening stiffening section ( 26 . 28 ) is provided. Housing according to claim 8, characterized in that the stiffening portion as at least one stiffening wall ( 26 . 28 ) or at least one stiffening strut are formed. Housing according to claim 8 or 9, characterized in that the at least one stiffening section ( 26 . 28 ) in front of or at the closed end area ( 12 ) ends.

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