DE202008009820U1 - Adjustment device for an adjustment part of a motor vehicle - Google Patents

Abstract

Adjustment device for an adjustment of a motor vehicle, with
A guide rail,
- A drive device and
A driver guided along the guide rail, which is coupled to the drive device by means of a traction mechanism and is displaceable in a downward direction along the guide rail for adjusting the adjustment part from an end position on the guide rail,
characterized,
that the at least one driver (14) in the end position on the guide rail (11) via a biasing means (3) in the downward direction (R _AB ) is biased.

Description

The The invention relates to an adjusting device for an adjustment of a motor vehicle according to the preamble of claim 1.

A Such adjustment device has a guide rail, a drive unit and a along the guide rail guided driver, who has a traction device coupled with the drive device and for adjusting the adjustment from an end position on the guide rail in a downward direction along the guide rail is displaceable.

For example, one of the DE 20 2005 019 562 U1 Known adjustment in the form of a cable window lifter driven by a drive traction means in the form of a rope which is coupled with two guided along guide rails and drivers drives them to adjust an adjustment in the form of a window of a vehicle door. For this purpose, the drive has a cable drum onto which the cable is wound during operation of the adjusting device in such a way that the drivers and thus simultaneously the window pane are adjusted along the guide rails. The traction means is guided at least in sections in a Bowden tube, which is supported relative to the drive unit of the adjusting device with an elastic element. The elastic element serves a rope length compensation and causes the traction means is always applied under tension to the cable drum to prevent in this way a spooling of the traction means on the cable drum. By means of the elastic element provided by the rope length compensation tolerances and rope loose can be compensated during the life of the adjusting device.

Cable window lifter a frameless vehicle door have conventional a Kurzhubfunktion, which is designed to be adjusted the window pane of frameless vehicle door when opening the vehicle door automatically drive out of the seal of the vehicle door and thus to facilitate the opening of the vehicle door and damage to the gasket, the windowpane or to prevent the vehicle door. It is essential that the windowpane when opening the vehicle door moved out of the seal within a very short time becomes, even with a quick opening the vehicle door the window pane gets out of the seal safely and in time. This required rapid adjustment of the window pane However, the elasticity of the cable window lifter system, conditioned in particular by the purpose of the rope length compensation provided elastic support of the Bowden tubes by means the elastic elements, contrary. At initiation of the adjustment process This elasticity must first be compensated. Only then can the adjusting forces be transferred to the adjustment, so that it to a Adjustment of the window pane comes.

Of the present invention is based on the object, an adjustment for an adjustment of a motor vehicle available to put that despite an elasticity in the power train the adjustment a quick initiation of the adjustment the adjustment of an end position, in particular for the provision a short-stroke function of a window pane of a frameless vehicle door, allows.

These The object is achieved by an object having the features of the claim 1 solved.

According to the invention provided in an adjusting device of the type mentioned that the at least one driver in the end position on the guide rail over biasing a biasing device in the downward direction is.

basic idea The invention is, by means of an external to the drive unit, additional Biasing device already at the beginning of an adjustment, at the driver from an end position on the guide rail for example, in the context of a short-stroke function of a frameless Vehicle door to be moved out, an adjustment in the downward direction on the driver exercise. This adjusting force acts on the driver regardless of whether at the beginning of the adjustment initially the elasticity balanced in the power transmission line or a ropeless must become. The adjusting force is via a biasing device provided, which biases the driver in the downward direction, So a biasing force in the downward direction on the Driver.

The Biasing means may for example comprise an elastic spring, which is arranged on the guide rail or the driver is. This elastic spring may be formed as a tension spring, which is arranged on the guide rail or the driver and is loaded in the end position to train. This tension spring is stretched when retracting the driver in the end position and thus loaded on train and held in this state in the final position. When initiating the adjustment, the tension spring exerts a Traction on the driver and thus clamps the driver in the down direction.

Alternatively, the spring may also be formed as a compression spring which is arranged on the guide rail or the driver and loaded in the end position to pressure. When retracting the driver in the end position, the compression spring kompri miert, held in this state in the end position and exerts a pressure force on the driver at the initiation of the adjustment process from the end position.

In In another embodiment, the elastic spring as well Leg spring be formed on the guide rail or the driver arranged and loaded in the final position to torsion is. The leg spring has for this purpose two legs, of which one with the driver and the other with the guide rail cooperates, so that when retracting the driver in the end position the torsion spring is loaded on torsion, the driver in this State of the leg spring is held in the end position and the Leg spring when initiating the adjustment process by the torsional force press the driver out of the final position.

In a further embodiment, the spring is designed as a leaf spring, which is arranged on the guide rail or the driver and is loaded in the end position to pressure. The leaf spring is compressed when retracting the driver in the end position, held in this state and exercises when initiating the adjustment process from the end position an adjusting force in the downward direction on the driver.

In In another embodiment, the biasing means two magnets of which one magnet on the driver and the other Magnet is arranged on the guide rail. The magnets are poled to each other so that they are in the final position of the driver on the guide rail a force on the driver in exercise the downward direction. The thought here is to use two magnets instead of a spring, the reverse are poled to each other and thus repel. Is a Magnet on the guide rail and the other magnet on arranged the driver and the magnets in the process of Driver in the final position approached each other, so is through the repulsive force of the magnets on an adjusting the driver exercised the driver from the final position tried to adjust.

In In yet another embodiment, the biasing device have a gas spring disposed on the guide rail is. In the end position, the gas spring acts via a lever the driver together, wherein when retracting the driver in the End position of the gas spring over the lever loaded on pressure is kept in this state and when initiating the adjustment from the end position an adjusting force in the downward direction on the driver.

The The foregoing embodiments have in common that arranged a biasing element between the driver and the guide rail is, in the final position, a biasing force on the driver exercises, so this in the downward direction is biased. The biasing element can either be either be arranged on the guide rail or on the driver. It is essential that the biasing element in the final position between the guide rail and the driver acts and an adjusting force in the downward direction on the driver exercises. If the adjustment process is initiated, as a result the force exerted by the biasing device, additional adjustment the driver already at the beginning of the adjustment process in the downward direction adjusted, even if initially a rope lot of the adjustment must be compensated and thus no adjustment of the drive means are transmitted to the driver can.

Of the The idea underlying the invention is based on the following the embodiments shown in the figures closer be explained. Show it:

1 an overview of an adjustment in the form of a cable window lifter;

2A - 2C enlarged views, corresponding to the detail A according to 1 a first embodiment of an adjusting device with a biasing device having a tension spring;

3A . 3B enlarged views, corresponding to the detail A according to 1 a second embodiment of an adjusting device with a biasing device having a compression spring;

4A . 4B enlarged views, corresponding to the detail A according to 1 a third embodiment of an adjusting device with a biasing device having a leg spring;

5A . 5B enlarged views, corresponding to the detail A according to 1 a further embodiment of an adjusting device with a biasing device having a leg spring;

6A . 6B enlarged views, corresponding to the detail A according to 1 an embodiment of an adjusting device with a biasing device having two oppositely poled magnets;

7A . 7B enlarged views, corresponding to the detail A according to 1 , An embodiment of an adjusting device with a Biasing device, which has a gas spring, and

8th a schematic view of an embodiment of an adjusting device with a biasing device having a leaf spring.

1 shows an overview of an adjustment 1 in the form of a cable window lifter for adjusting an adjustment in the form of a window pane 4 , The adjusting device 1 can be designed in particular for a frameless vehicle door, in which the window pane 4 is retracted in the closed state in a seal, for example, on the A-pillar and the vehicle roof of the vehicle.

The adjusting device 1 is as a cable window lifter with a traction device 130 formed in the form of a rope. The traction device 130 extends from a drive unit 10 to an upper deflecting element 110 on a first guide rail 11 , will be along the first guide rail 11 to a lower deflecting element 111 guided, extends to an upper deflecting element 120 a second guide rail 12 , is along the second guide rail 12 to a lower deflecting element 121 guided and extends from this lower deflecting element 121 back to the drive unit 10 , The traction device 130 forms in this way a closed, intersecting rope loop and is partially sections of a Bowden system 13 with one the traction means 130 surrounding Bowden tube 131 guided, so that the traction means 130 on the not parallel to the guide rails 11 . 12 extending sections does not have to be kept taut, but the tension in the traction means 130 on these sections by the support of the Bowden tube 131 is made available.

The adjusting device 1 has a rope length exclusively serving, locking acting rope length compensation device 2 for example, by type DE 20 2005 018 565 U1 as well as elastic elements 20 in the form of coil springs for elastic rope length compensation. The elastic elements 20 are in the power train on both sides of the drive unit 10 arranged and support each of the Bowden tube 131 opposite a cable drum housing of the drive unit 10 from.

The traction device 130 is in a conventional manner to a rotatably mounted about an axis of rotation cable drum of the drive unit 10 wound in such a way that upon rotation of the cable drum, the one end of the traction means 130 wound on the cable drum, while the other end of the traction device 130 is unwound from the cable drum, so that the cable loop has a total of a constant length.

The traction device 130 is via rope nipples 140 . 150 along with the guide rails 11 . 12 slidably mounted drivers 14 . 15 connected and transmits one of the drive unit 10 generated adjusting force on the driver 14 . 15 and thus on the over holding elements 141 . 151 with the carriers 14 . 15 connected window pane 4 , The drivers 14 . 15 are each about a bolt 142 (please refer 2A ) with the holding elements 141 . 151 connected.

During operation of the drive unit 10 an electric motor sets the cable drum in a rotary motion, so that the one end of the traction means 130 wound on the cable drum, the other end of the traction device 130 However, is handled, thereby the traction means 130 shifts, the carriers 14 . 15 synchronously along the guide rails 11 . 12 be moved and with the drivers 14 . 15 coupled windowpane 4 , depending on the adjustment, is raised or lowered.

In 1 is the adjustment device 1 presented in a position in which the drivers 14 . 15 each in an end position at the upper end of the guide rails 11 . 12 are driven. In this state are the drivers 14 . 15 each at a stop 112 . 122 on, so the takers 14 . 15 can not be moved further up in the upward direction R _AUF . In this state is the over holding elements 141 . 151 with the carriers 14 . 15 connected window pane 4 in a raised position, in which it closes a window opening of a vehicle door, in particular a frameless vehicle door and is retracted into a seal, for example on the vehicle roof or on the A-pillar of the vehicle.

Should the windowpane 4 from the in 1 shown end position of the driver 14 . 15 be moved in the downward direction R _AB , so must first the elasticity in the power transmission line of the adjustment 1 , especially due to the rope length equalizing device 2 and the elastic elements 20 on both sides of the drive unit 10 to be compensated. At the beginning of an adjustment so no adjustment forces from the drive unit 10 on the carriers 14 . 15 and thus on the windowpane 4 transfer.

However, in order to provide a short-stroke function in particular in the case of a frameless vehicle door, it is necessary that the window pane 4 within a very short time, namely, before the vehicle door can be opened, is moved from a seal in which it is kept in the closed state, so that the opening of the vehicle door can be done easily and damage the windowpane 4 , the gasket or the vehicle door are avoided. For such a short-stroke function is required that already at the beginning of an adjustment process for moving the driver 14 . 15 from the in 1 End position shown an adjusting force on the driver 14 . 15 is exercised to the takers 14 . 15 at least as far as in the downward direction R _AB to proceed, that the window pane 4 from the seal, in which it is held in a closed position is driven.

This is where the present invention intervenes. The invention is based on the idea, at the beginning of the adjustment process for moving the driver 14 . 15 from the in 1 End position shown adjusting the driver 14 . 15 to assist in the downward direction R _AB by a biasing device and thus at the beginning of the adjustment process an additional adjustment independent of the drive unit 10 on the carriers 14 . 15 exercise.

Variants of the pretensioner are in 2 to 8th are shown and will be explained below, wherein components of the same function, as far as appropriate, are provided with the same reference numerals.

2A to 2C show first a first embodiment, wherein 2A a perspective view, 2 B a front view and 2C a rear view of the adjustment 1 in a section corresponding to the detail A according to 1 represent. The pretensioner 3 has a tension spring 310 on that between a fixed holding element 311 on the guide rail 11 and one to the guide rail 11 sliding stop element 312 is curious. The stop element 312 acts in the end position with the driver 14 together and exerts a biasing force on the driver 14 in the downward direction R _AB on the driver 14 out. When retracting the driver 14 in the final position comes the driver 14 with the stop element 312 in plant and moves it against the downward direction R _AB upwards. This will cause the tension spring 310 stretched and loaded on train until the stop element 312 at the stop 112 on the guide rail 11 strikes. This defines the end position in which the driver 14 is held, which via the drive unit 10 on the driver 14 acting holding forces greater than the tensile force of the tension spring 310 are. Should the driver 14 be moved from the end position in the downward direction R _AB , so initially an elasticity or ropeless in the power transmission line of the adjustment 1 balanced. This reduces the on the driver 14 acting holding forces. Are the holding forces smaller than those by the tension spring 310 on the driver 14 applied traction and is the difference between tensile and holding forces sufficient for adjusting the window 4 , so adjusted the driver 14 due to the tensile force of the tension spring 310 in the downward direction R _AB , although over the traction means 130 no adjustment force from the drive unit 10 on the driver 14 is exercised. The by the tension spring 310 provided traction thus acts additionally and early on at the beginning of the adjustment process on the driver 14 and allows an early process of the driver 14 from the final position.

For a Kurzhubfunktion a frameless vehicle door is the biasing device 3 preferably dimensioned so that the downward adjustment of the driver 14 in the downward direction R _AB as a result of the biasing means 3 applied adjusting force is sufficient to the window pane 4 out of the windowpane 4 to hold the holding seal.

An alternative embodiment is in 3A (perspective view) and 3B (Front view). In this case, the biasing device 3 a compression spring 320 on that in a cylinder 322 on the guide rail 11 is arranged. In the in 3A and 3B shown end position of the driver 14 the compression spring acts 320 over a stop bolt 321 on the driver 14 a, wherein the compression spring 320 is loaded on pressure and a compressive force in the downward direction R _AB on the driver 14 exercises. When entering the final position comes the driver 14 with the stopper bolt 321 in abutment and compresses the compression spring 320 and will be in this final position by the drive unit 10 held. When initiating the adjustment let the drive unit 10 on the driver 14 over the traction means 130 However, applied holding forces after, so the driver 14 due to the pressure force of the compression spring 320 is moved in the downward direction R _AB .

In the further embodiment according to 4A (perspective view) and 4B (Exploded view) is a biasing device 3 provided, which is a leg spring 330 with thighs 330a . 330b having. The thigh feather 330 is via a retaining element 331 on the guide rail 11 held, with the thigh 330b via a hook element 332 relative to the guide rail 11 is fixed and the other leg 330a the thigh feather 330 in the in 4A shown end position on the driver 14 is present while having a hook 143 at the driver 14 is held. When entering the final position comes the driver 14 with the thigh 330a in plant, causing the leg spring 330 is loaded on torsion. In this state, the driver 14 in the final position according to 4A through that of the drive unit 10 held holding forces, wherein the holding forces the torsional force of the leg spring 330 exceed. When initiating an adjustment process from the in 4A shown end position allow for compensation of the ropeless in the system, the holding forces first, whereby the torsional force of the leg spring 330 the holding forces exceeds and the driver 14 presses in the downward direction R _AB from the end position.

A variant of the embodiment according to 4A and 4B is in 5A (perspective view) and 5B (Front view). The embodiments differ only by the formation of the retaining element 331 respectively. 331 ' , In the embodiment according to 5A and 5B is the leg spring 330 on a bracket 334 wrapped in the form of a shaft and is placed over the bracket 334 on the holding element 331 ' held. In their operation, the embodiments according to 4A and 4B and 5A and 5B the same effect.

In the embodiment according to 6A (perspective view) and 6B (Front view) becomes a pretensioner 3 used, the two oppositely poled magnets 340 . 341 has, which repel each other when approaching each other. The magnet 340 is stuck with the stop 112 on the guide rail 11 connected while the magnet 341 at the driver 14 is arranged. When retracting the driver 14 in the final position, the magnet approaches 341 at the driver 14 the magnet 340 on the guide rail 11 at. In the in 6A and 6B shown end position is thus by the magnets 340 . 341 a force on the driver 14 exerted in the downward direction R _AB . This force is in the state in which the driver 14 in the final position via the drive unit 10 is kept smaller than the holding forces. When initiating the adjustment process and decreasing the holding forces exceeds that through the magnets 340 . 341 However, applied force, these holding forces, so that an additional adjusting force on the driver 14 is already exercised at the initiation of the adjustment process during the compensation of the rope loose in the system.

In the embodiment according to 7A (perspective view) and 76 (Front view) becomes a gas spring 350 for the pretensioner 3 used that over a lever 351 with the driver 14 interacts. The lever 351 is about a rotation axis 352 hinged and comes when retracting the driver 14 in the final position with the driver 14 in Appendix. A catch 143 at the driver thereby secures the system of the lever 351 at the driver 14 , When retracting the driver 14 becomes the gas spring 350 over the lever 351 strained on pressure by the fluid in the gas spring 350 is compressed. In this state, the driver 14 held in the final position. When initiating the adjustment exercises the gas spring 350 then a force in the downward direction R _AB on the driver 14 out, leaving the driver 14 is displaced in the downward direction R _AB.

In the embodiments described above is a biasing element 310 . 320 . 330 . 340 . 350 each on the guide rail 11 arranged. Just as well - in a kinematic reversal - the biasing element 310 . 320 . 330 . 340 . 350 but also on the driver 14 be arranged. It is crucial that in the final position the biasing element 310 . 320 . 330 . 340 . 350 between the guide rail 11 and the driver 14 acts.

A final embodiment is in the schematic view according to 8th shown. The pretensioner 3 has a leaf spring 360 on that in a recording 364 in the driver 14 is arranged and over a stop pin 361 with the stop 112 on the guide rail 11 interacts. For a defined system of the driver 14 at the stop 112 are at the top of the driver 14 damping elements 362 provided in the final position in abutment against the stop 112 are. When retracting the driver 14 in the final position comes in a recording 365 displaceable on the driver 14 mounted stop bolts 361 with the stop 112 in plant, causing the leaf spring 360 is compressed. When initiating the adjustment in the downward direction R _AB exerts the leaf spring 360 a restoring adjusting force on the driver 14 out, through which the driver 14 pushed out of the final position and thus already shifted when initiating the adjustment.

The above-described embodiments show a biasing device 3 only on the guide rail 11 , A comparable pretensioner 3 but also on the second guide rail 12 be arranged.

The Invention is not on the above-described embodiments limited, but can also be in total realize another form. Essential here is that between a driver and a guide rail in an end position a pretensioning device acts, which acts on the driver in a pretensioning manner, that when initiating an adjustment from the end position a additional adjusting force exerted on the driver becomes.

1

adjustment

10

drive unit

11 12

guide rail

110 120

deflecting

111, 121

deflecting

112 122

attack

13

Bowden system

130

rope

131

Bowden

14 15

takeaway

140 150

cable nipple

141 151

retaining element

142

bolt

143

hook

2

Cable length compensating device

20

elastic element

3

biasing means

310

mainspring

311

retaining element

312

stop element

320

compression spring

321

stop pin

322

cylinder

330

Leg spring

330a, 330b

leg

331 331 '

retaining element

332

hook element

333

attachment

334

bracket

340 341

magnet

350

gas spring

351

lever

352

axis of rotation

360

leaf spring

361

stop pin

362

damping element

364, 365

admission

4

windowpane

A

neckline

R _AB

downward direction

^R ON

uplink

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 202005019562 U1 [0003]
• - DE 202005018565 U1 [0027]

Claims (9)

Adjusting device for an adjustment part of a motor vehicle, comprising - a guide rail, - a drive device and - a guided along the guide rail driver, coupled via a traction means with the drive means and displaceable for adjusting the adjustment from an end position on the guide rail in a downward direction along the guide rail is, characterized in that the at least one driver ( 14 ) in the end position on the guide rail ( 11 ) via a pretensioning device ( 3 ) is biased in the downward direction (R _AB ). Adjusting device according to claim 1, characterized in that the pretensioning device ( 3 ) an elastic spring ( 310 ; 320 ; 330 ; 360 ), which on the guide rail ( 11 ) or the driver ( 14 ) is arranged. Adjusting device according to claim 2, characterized in that the elastic spring as on the guide rail ( 11 ) or the driver ( 14 ) arranged tension spring ( 310 ) is formed, which during retraction of the driver ( 14 ) is stretched in the end position, in this train loaded state by that of the drive unit ( 10 ) holding forces and the driver ( 14 ) biased in the downward direction and upon initiation of the adjustment process from the end position, a tensile force on the driver ( 14 ) exercises. Adjusting device according to claim 2, characterized in that the elastic spring from a on the guide rail ( 11 ) or on the driver ( 14 ) arranged compression spring ( 320 ), which when entering the driver ( 14 ) is compressed in the end position, in this pressure-loaded state by the drive unit ( 10 ) holding forces and the driver ( 14 ) biased in the downward direction and upon initiation of the adjustment process from the end position a compressive force on the driver ( 14 ) exercises. Adjusting device according to claim 2, characterized in that the elastic spring from a on the guide rail ( 11 ) or the driver ( 14 ) arranged leg spring ( 330 ), which when entering the driver ( 14 ) is loaded in the end position to torsion, in this state by that of the drive unit ( 10 ) holding forces is maintained and when initiating the adjustment by the torsional force the driver ( 14 ) presses out of the end position. Adjusting device according to claim 5, characterized in that the leg spring ( 330 ) has two legs, of which the one leg ( 330a ) in the end position of the driver ( 14 ) via a hook ( 143 ) at the driver ( 14 ) and the other leg ( 330b ) via a hook element ( 332 ) relative to the guide rail ( 11 ) is fixed. Adjusting device according to claim 2, characterized in that the elastic spring from a on the guide rail ( 11 ) or the driver ( 14 ) arranged leaf spring ( 360 ), which when entering the driver ( 14 ) compressed in the end position, in this pressure-loaded state by the drive unit ( 10 ) holding forces is maintained and when initiating the adjustment process from the end position an adjusting force in the downward direction of the driver ( 14 ) exercises. Adjusting device according to claim 1, characterized in that the pretensioning device ( 3 ) two magnets ( 340 . 341 ), of which one magnet ( 341 ) on the driver ( 14 ) and the other magnet ( 340 ) on the guide rail ( 11 ), wherein the magnets ( 340 . 341 ) are poled to each other so that they in the end position of the driver ( 14 ) on the guide rail ( 11 ) one from the repulsive force of the magnets ( 340 . 341 ) resulting biasing force on the driver ( 14 ) in the downward direction (R _AB ). Adjusting device according to claim 1, characterized in that the pretensioning device ( 3 ) one on the guide rail ( 11 ) arranged gas spring ( 350 ), which on the one leg of a hinged lever ( 351 ) is applied, the other leg when retracting the driver ( 14 ) in the end position to the driver ( 14 ), so that the gas spring ( 350 ) over the lever ( 351 ) is compressed in this pressure-loaded state by the drive unit ( 10 ) holding forces in the end position of the driver ( 14 ) and upon initiation of the adjustment process a force in the downward direction R _AB on the driver ( 14 ) exercises.