EP1913221B1 - Force transmission element, window lifter and motor vehicle door with a window lifter - Google Patents

Abstract

The invention relates to a force-transmission element for a window lifter (200; 300; 500) for transmitting a closing force (242; 342, 356) and an opening force (230; 330, 350) to a window (210; 310; 510), wherein the force-transmission element has a first force application point (216; 316, 316'; 416) for transmitting the closing force and a second force application point (222; 322, 322'; 422) for transmitting the opening force, and wherein the force application points are arranged in a displacement direction of the window and offset perpendicular to this displacement direction.

Description

The invention relates to a power transmission element for a window and a window and a motor vehicle door with a window.

Various windows are known from the prior art, such as for example DE 197 23 642 B4 . DE 102 30 073 A1 . EP 1 129 875 B1 . WO 2004/002766 A1 . DE 196 19 087 C2 . DE 102 52 055A1 . WO 2004/065738 A1 and DE 102 55 461 A1 ,

US 5,309,679 shows a motor vehicle window regulator with Bowden cables, which is located between longitudinal rails in a motor vehicle door. One side of the window is moved synchronously with the movement of the other side of the window.

FR 2 831 588 A1 shows a window with a connector, a receptacle for a window glass and a fastener for a cable. The connecting element can be used in a vehicle on both the left and right sides.

A common disadvantage of prior art windows is that the maximum so-called glass drop, that is, the maximum stroke of the window between a closed and an open position, is smaller than the distance of the pulleys of the window regulator. This is exemplary for a known from the prior art windows in the FIG. 1 clarifies:

The FIG. 1 shows a cable window lifter 100 which is fixed to a support plate 102 of a motor vehicle door. The carrier plate 102 is the door inner panel of the motor vehicle door or a carrier plate of a door module.

The cable window lifter 100 has a drive motor 104 which is fixed to the support plate 102. The single cable 106 of the cable window lifter 100 is guided over two deflection rollers 108 and 110 and is connected to a driver 114 by means of a cable nipple 112 pinched with the cable 106. The driver 114 is on the one hand displaceable with a along the adjustment in the FIG. 1 not shown window extending guide rail 116 engages and on the other hand, the window pane. By a rotation of the cable drum of the drive motor 104 to the right or to the left of the driver 114 along the Guide rail 116 is moved upwards or downwards, which leaves the window open and close.

In the FIG. 1 the driver 114 is shown in dashed lines in the position A, that is in the closed position of the window as well as in the position B, that is in the maximum open position of the window. The resulting maximum stroke 118 of the window, that is, the so-called glass drop, is inherently considerably smaller than the distance 120 of the pulleys 108 and 110.

The invention is based on the object to provide an improved power transmission element for a window, a window and a motor vehicle door with a window.

The objects underlying the invention are each achieved with the features of the independent claims. Preferred embodiments of the invention are indicated in the dependent claims.

The invention provides a power transmission element for a window regulator, which serves for transmitting a closing force and an opening force on a window, wherein the force transmission element has a first force application point for transmitting the closing force and a second force application point for transmitting the opening force, and wherein the force application points in a Adjustment of the window and are arranged offset perpendicular thereto.

Due to the staggered arrangement of the force application points for the opening force and the closing force in vertical and horizontal directions can be created using the power transmission element according to the invention, a window, wherein the maximum stroke of the window is greater than the distance of the pulleys. As a result, a particularly compact design of the window can be realized.

According to one embodiment of the invention, the power transmission element has a fastening means for attachment to the window. The fastening means may be designed to form a positive or non-positive connection with the window.

According to one embodiment of the invention, the force transmitting member has a first protrusion for forming the first point of force application and a second protrusion for forming the second point of force application, the protrusions pointing in different directions, preferably substantially opposite horizontal directions. In this case, the first projection is arranged above the second projection.

According to one embodiment of the invention, the first projection has a first stop surface for forming a first stop in an opening position of the window and the second projection has a second stop surface for forming a second stop in a closed position of the window. Preferably, the stop surfaces are circular arc-shaped to form stops with pulleys of the window.

According to one embodiment of the invention, the force application points each serve to receive a pull rope. By a spring, at least one of the traction cables can be under a bias, which can increase the life of the window lifter with a gradual expansion of the traction cable.

In another aspect, the invention relates to a window with at least one force transmission element according to the invention. The window regulator has a drive for transmitting a first tensile force to the first force application point for opening the window and for transmitting a second tensile force to the second force application point for closing the window.

According to one embodiment of the invention, corresponding first and second traction cables for transmitting the tensile forces are driven by the drive via at least one cable drum.

According to one embodiment of the invention, a first deflection roller is used for deflecting the first tensile force and a second deflection roller for deflecting the second tensile force, wherein the distance between the deflection rollers in the adjustment direction of the window is smaller than the maximum stroke of the window.

According to one embodiment of the invention, the glass connection of the window lifter takes place via at least two of the force transmission elements according to the invention. The two power transmission elements are mechanically coupled so that when opening and closing the window, a tensile force from one to the other Power transmission element is transmitted. Preferably, this mechanical coupling via another cable, which is guided over a further deflection roller.

This embodiment is particularly suitable for the realization of a so-called trackless window lifter, which does not require additional guide rails.

In a further aspect, the invention relates to a motor vehicle door with a window regulator according to the invention. For example, a door inner panel of the vehicle door has an opening which serves to receive a carrier on which the drive and the deflection rollers of the window lifter are mounted. Since a particularly compact design of the window lifter is possible due to the power transmission elements according to the invention, that is, the arrangement of the pulleys with a relatively small distance, the opening in the door inner panel may accordingly be relatively small. This makes it possible to increase the rigidity of the motor vehicle door and the crash safety.

Figur 1

einen aus dem Stand der Technik bekannten Seilfensterheber,

Figur 2

eine erste Ausführungsform eines erfindungsgemäßen Fensterhebers in einer Schließposition des Fensters,

Figur 3

die Ausführungsform des Fensterhebers der Figur 2 in einer Offnungsposition des Fensters,

Figur 4

eine zweite Ausführungsform eines erfindungsgemäßen Fensterhebers in einer Schließposition des Fensters,

Figur 5

die Ausführungsform des Fensterhebers der Figur 4 in einer Öffnungsposition des Fensters,

Figur 6

eine perspektivische Darstellung einer Ausführungsform eines erfindungsgemäßen Kraftübertragungselements zur Glasanbindung des Fensterhebers,

Figur 7

eine Detailansicht des Kraftübertragungselements der Figur 6,

Figur 8

das Tür-Innenblech einer Kraftfahrzeugtür, mit einer dritten Ausführungsform eines erfindungsgemäßen Fensterhebers.,

In further preferred embodiments of the invention will be explained in more detail with reference to the drawings. Show it:

FIG. 1

a cable window lifter known from the prior art,

FIG. 2

A first embodiment of a window regulator according to the invention in a closed position of the window,

FIG. 3

the embodiment of the window of the FIG. 2 in an opening position of the window,

FIG. 4

a second embodiment of a window regulator according to the invention in a closed position of the window,

FIG. 5

the embodiment of the window of the FIG. 4 in an opening position of the window,

FIG. 6

a perspective view of an embodiment of a power transmission element according to the invention for glass connection of the window regulator,

FIG. 7

a detailed view of the power transmission element of FIG. 6 .

FIG. 8

the door inner panel of a motor vehicle door, with a third embodiment of a window regulator according to the invention.,

The FIG. 2 shows a cable window lifter 200. The cable window lifter 200 has a drive which drives a cable drum 202. The drive with its cable drum 202 are mounted on a carrier 204. The carrier 204 may be a carrier plate, such as a door inner panel, or a plastic carrier bolted to a door inner panel, for example. The plastic carrier can form a so-called door module.

On the carrier 204, a lower guide roller 206 and an upper guide roller 208 are further arranged.

A window 210, which is to be adjusted by means of the cable window lifter 200, is in the FIG. 2 shown in a fully closed position. The window 210 is fixedly connected to a power transmission element 212. The power transmission element 212 has an upper projection 214 with a force application point 216 for a pull cable 218. The cable 218 is fixedly connected to the projection 214 at the force application point 216.

The force transmission element 212 has a further projection 220 on which a further force application point 222 is formed. In the embodiment considered here, the projections 214 and 220 are substantially in opposite directions, which are each substantially perpendicular to the adjustment direction 224 of the window 210.

In the in the FIG. 2 illustrated closed position of the window 210, the top of the projection 220 forms a stop 226 with the guide roller 208, whereby the movement of the window 210 is limited upward.

The force application point 222 of the power transmission element 212 is connected to a further cable 219. The cable 219 is guided via the deflection roller 208 to the cable drum 202.

In the in the FIG. 2 As shown in the closed position of the window 210, the maximum length of the cable 218 is unwound from the cable drum 202, whereas a maximum length of the cable 219 is wound on the cable drum 202.

Instead of a single cable drum 202, two separate cable drums for the ropes 218 and 219 may be present, which are driven by the same drive.

To open the window 210 drives the drive the cable drum 202 in the in the FIG. 2 shown direction sense 228. A tensile force 230 is thereby transmitted to the force application point 216 via the cable 218. Since the power transmission element 212 is fixedly connected to the window 210, so the force 230 acts in the adjustment direction 224 on the window 210, so that the window 210 is in the adjustment direction 224 in motion. In this case, the deflection roller 206 begins to rotate in the direction 232.

At the same time, the cable 219 is unwound from the cable drum 202, so that the guide roller 208 can rotate in the direction of sense 234. As a result, the power transmission element 212 moves from its in the FIG. 2 shown position A in his in the FIG. 3 shown position B, in which the window 210 is fully opened. The position A of the power transmission element 212 is also in the FIG. 3 shown with dashed lines.

In position B, a maximum length of the cable 218 has been wound on the cable drum 202, whereas a maximum length of the cable 219 has been unwound from the cable drum 202. The window 210 is maximally opened in this position. The projection 214 is located in the position B at the height of the lower guide roller 206th

By movement of the power transmission element 212 from the position A to the position B, a stroke 236 of the glass pane 210 has been realized, which is greater than the distance 238 of the guide rollers 206 and 208. This allows the carrier 204 to be made compact accordingly.

To close the window 210 in the adjustment direction 224, the cable drum 202 is driven in the direction opposite to the direction of sense 228 direction 240. As a result, a force 242 is transmitted to the force application point 222 via the cable 219. Since the power transmission element 212 is fixedly connected to the window 210, the force 242 also acts on the window 210, so that this is in the adjustment direction 224 in motion. Due to this, the guide roller 208 rotates in the direction of sense 234 opposite direction sense 244th

By rotation of the cable drum 202 in the direction of direction 240, the cable 218 is further unwound, so that the guide roller 206 rotates together with the window 210 in the adjustment direction 224 in a direction opposite to the direction of sense 232 direction sense 245 due to the movement of the power transmission element 212. To close the window 210, therefore, the maximum length of the cable 218 is unwound from the cable drum 202 until the power transmission element 212 has again reached its position A.

According to a further embodiment, the deflection rollers 206 and the projection 214 may be arranged so that the underside of the projection 214 with the deflection roller 206 in the position B forms a stop, whereby the final position when opening the window 210 is clearly defined.

The FIG. 4 shows a further embodiment of a cable window lifter according to the invention. Elements of FIG. 4 , the elements of FIG. 2 and 3 correspond are marked with corresponding reference numerals.

In the embodiment of the cable window lifter 300 according to the FIG. 4 For example, two of the power transmission elements 312 and 312 'are fixedly connected to the window 310. As in the embodiment of Figures 2 and 3 the cable 318 is connected to the force application point 316 of the projection 314 and guided via the deflection roller 306 to the cable drum 302. Likewise, the cable 319 is guided to the force application point 322 'of the projection 320' via the upper deflection roller 308 '. When the cable drum 302 is driven in direction sense 328, the cable 318 is wound on the cable drum so that the force 330 acts on the force application point 316.

In contrast to the embodiment of the Figures 2 and 3 is the force application point 322 not connected to the cable drum 302, but via another cable 346 which is guided via a guide roller 348 with the force application point 316 'of the force transmission element 312'. Thus, a force 350 is transmitted via the cable 346 from the force application point 322 to the force application point 316 ', wherein in a symmetrical arrangement the force 350 is approximately half the force 330. As a result, the two force transmission elements 312, 312' transmit respectively for example, the force 350 on the window 310. This embodiment is therefore particularly advantageous for the realization of a window regulator, which does not require additional guide rails for the window 310.

During the opening movement of the window 310 in the adjustment direction 324, therefore, the cable 318 is wound on the cable drum 302, so that the force 330 is transmitted to the force application point 316. At the same time, the cable 319 is unwound from the cable drum 202.

Further, a portion of the force 330 is transmitted from the force application point 322 via the cable 346 to the force application point 316 'with the cable 346 neither wound nor unwound becomes. The guide roller 348 rotates in the direction of sense 352, as in the FIG. 4 shown.

The FIG. 5 shows the embodiment of the FIG. 4 After the window 310 has been fully opened. In this case, the force transmission elements 312, 312 'from the position A (in the FIG. 5 shown with dashed lines) moved to the position B. The resulting maximum stroke 326 of the window 310 is again greater than the distance 328 of the deflection rollers 308, 308 'and 306, 348.

In position B, the cable 318 is maximally wound on the cable drum 302, whereas a maximum length of the cable 319 is unwound from the cable drum 302. The cable 346 is neither wound nor unwound, but connects the force application points 316 'and 322 via the pulleys 308 and 348.

To close the window 310 in the adjustment direction 324, the cable drum 302 is driven in the direction sense 340, so that a force 342 is transmitted from the cable 319 to the point of force application 322 '. This force 342 is partially transmitted as a force 356 from the cable 346 to the force application point 322. In approximately symmetrical arrangement, the force 356 is approximately half of the force 342, so that the same force 356 is transmitted to both sides of the window 310 by the force transmission elements 312 and 312 ', respectively. Due to this, the window 310 or the force transmission elements 312 or 312 'moves back to the position A again.

The FIG. 6 shows an embodiment of a power transmission element 412, as in the embodiments of the FIGS. 2 to 5 the window regulator according to the invention can be used. Elements of FIG. 6 , the elements of FIGS. 2 to 5 correspond are marked with corresponding reference numerals. The power transmission element 412 has a projection 414 with an opening 415 for receiving a cable 418. Via the cable 418, a tensile force can be introduced to the force application point 416 formed by the projection 414.

On its underside, the projection 414 has a circular arcuate curved surface 419 for forming a stop with, for example, the guide roller 406. This stop is formed in the fully open position of the window, cf. this is the position B of Figures 3 and 5 ,

The power transmission element 412 has a further projection 420 to which the cable 419 is attached. A tensile force 442 can be exerted on the force application point 422 formed by the projection 420 via the cable 419.

The projections 420 and 414 are arranged offset in the adjustment direction 424.

The projection 420 has an arcuate curved surface 421 for forming a stop (see stop 226 of FIG FIG. 2 ) with the guide roller 408.

The power transmission element 412 further has a fastening element 458 which serves for the so-called glass connection, that is to say the attachment of the force transmission element 412 to the window pane to be moved. The fastener 458 has in the embodiment of FIG. 5 two legs 460, which are arranged opposite to each other, so that a clamp for non-positive and / or positive connection with the window pane is formed.

In the embodiment of the FIG. 4 and 5 may be a force transmission element according to the embodiment of the FIG. 6 be used for both power transmission elements 312 and 312 '.

The FIG. 7 shows a partial section of the power transmission element of FIG. 6 In the embodiment shown here is located in a blind hole of the projection 414, a spring 460. The one end of the spring 460 is held by a mounting nipple 462, which is supported on the edges of the blind hole, so that the spring 460, which is connected at its other end to the cable 418, the rope 418 exerts a bias. This bias has the advantage that at a possible elongation of the cable 418, which in particular after a longer period of use may occur, the window regulator remains fully functional.

The FIG. 8 shows a motor vehicle door 564. Elements of FIG. 8 , the elements of FIGS. 2 to 6 correspond are marked with corresponding reference numerals.

The motor vehicle door 564 has a door inner panel 566 having an opening 568. At the edges of the opening 568, the carrier 504 of an embodiment of the cable window lifter 500 according to the invention is attached. The cable window lifter 500 is as a so-called railless window regulator according to the embodiments of FIG. 4 and 5 educated.

The FIG. 8 shows the window 510 in its closed position. To open the window 510, the cable drum 502 is driven by the drive in the direction sense 528, so that the cable 518 transmits a tensile force to the power transmission element 512 and is wound on the cable drum 502, the cable 519 is unwound from the cable drum 502 and a part the tensile force transmitted via the cable 518 is transmitted from the power transmission element 512 to the power transmission element 512 'via the cable 546.

In contrast to the embodiment of the FIGS. 4 and 5 the cable 546 crosses the cable drum 502. For example, above the cable drum 502 there is a plate over which the cable 546 can slide.

LIST OF REFERENCE NUMBERS

100

Cable window lifter

102

support plate

104

drive motor

106

rope

108

idler pulley

110

idler pulley

112

cable nipple

114

takeaway

116

guide rail

118

stroke

120

distance

200

Cable window lifter

202

cable drum

204

carrier

206

idler pulley

208

idler pulley

210

window

212

Power transmission element

214

head Start

216

Force application point

218

rope

219

rope

220

head Start

222

Force application point

224

adjustment

226

attack

228

sense of direction

230

force

232

sense of direction

234

sense of direction

236

stroke

238

distance

240

sense of direction

242

force

244

sense of direction

245

sense of direction

300

Cable window lifter

302

cable drum

304

carrier

306

idler pulley

308

idler pulley

308 '

idler pulley

310

window

312

Power transmission element

312 '

Power transmission element

314

head Start

314 '

head Start

316

Force application point

316 '

Force application point

318

rope

319

rope

320

head Start

320 '

head Start

322

Force application point

322 '

Force application point

324

adjustment

326

attack

326 '

attack

328

sense of direction

330

force

334

sense of direction

336

stroke

338

distance

340

sense of direction

342

force

344

sense of direction

346

rope

348

idler pulley

350

force

352

sense of direction

356

force

412

Power transmission element

414

head Start

415

opening

416

Force application point

418

rope

419

area

420

head Start

421

area

430

traction

458

fastener

460

feather

462

mounting nipple

500

Cable window lifter

502

cable drum

504

carrier

506

idler pulley

508

idler pulley

508 '

idler pulley

510

window

512

Power transmission element

512 '

Power transmission element

518

rope

519

rope

528

sense of direction

546

rope

548

idler pulley

564

Motor vehicle door

566

Inside door panel

568

opening

Claims (18)

1. Force transmission element for a motor vehicle window lifter (200; 300; 500) with a pull cord and deflecting rollers for transmitting a closing force (242; 342, 356) and an opening force (230; 330, 350) to a window (210; 310; 510), the force transmission element having a first projection (214; 314, 314'; 414) for forming a first force engagement point (216; 316, 316'; 416) for receiving the pull cord and for transmitting the closing force and a second projection (220; 320, 320'; 420) for forming a second force engagement point (222; 322, 322'; 422) for receiving the pull cord and for transmitting the opening force, the force engagement points being arranged so as to be offset in an adjustment direction (224; 324) of the window and perpendicularly with respect to the adjustment direction, characterized in that the first projection has a first stop face (419) for forming a first stop in an opening position of the window, and the second projection has a second stop face (421) for forming a second stop in a closing position of the window.
2. Force transmission element according to Claim 1, with a fastening means (458, 460) for fastening to the window.
3. Force transmission element according to Claim 2, the fastening means being designed for making a positive or non-positive connection to the window.
4. Force transmission element according to one of the preceding Claims 1, 2 or 3, the projections pointing in different horizontal directions.
5. Force transmission element according to Claim 4, the projections pointing essentially in opposite directions.
6. Force transmission element according to Claim 4 or 5, the first projection being arranged above the second projection.
7. Force transmission element according to one of Claims 1 to 6, the first and/or the second stop faces being designed in the form of an arc of a circle in order to form the respective stop with respect to a deflecting roller.
8. Force transmission element according to one of the preceding claims, the first force engagement point being designed for receiving a first cord (218; 318, 346; 418; 518, 546), and the second engagement point being designed for receiving a second cord (219; 319, 346; 419; 519, 546).
9. Window lifter with at least one force transmission element (212'; 312, 312'; 412; 512; 512') according to one of the preceding Claims 1 to 8 with a drive for transmitting an opening force (230; 330, 350) to the first force engagement point in order to open the window and for transmitting a closing force (242; 342, 356) to the second force engagement point in order to close the window.
10. Window lifter according to Claim 9, with a first cord (218; 318, 346; 418; 518, 546) for initiating the opening force and a second cord (219; 319, 346; 419; 519, 546) for initiating the closing force and with at least one cord drum (202; 302; 502) for the first and second cords.
11. Window lifter according to Claim 9 or 10, with a first deflecting roller (206; 306; 516) for deflecting the opening force and with a second deflecting roller (208; 308; 508) for deflecting the closing force, the distance (238; 338) between the deflecting rollers in an adjustment direction (224; 324) of the window being smaller than the maximum lift (236; 336) of the window.
12. Window lifter according to one of the preceding Claims 9, 10 or 11, with first and second force transmission elements (312, 312'), the first force engagement point (316') of the second force transmission element (312') being coupled mechanically to the second force engagement point (322) of the first force transmission element (312).
13. Window lifter according to Claim 12, the mechanical coupling taking place by means of a third cord (346) guided via a third deflecting roller (348).
14. Window lifter according to Claim 12 or 13, the mechanical coupling being designed so that, during the opening of the window, a pull (350) is transmitted from the second force engagement point of the first force transmission element to the first force engagement point of the second force transmission element.
15. Window lifter according to one of the preceding Claims 11 to 14, with a carrier (204; 304; 504) for the drive and for the deflecting rollers.
16. Window lifter according to Claim 15, the carrier being designed to be received in an orifice (568) of a door inner panel (566).
17. Motor vehicle door with a window lifter according to one of the preceding Claims 9 to 16.
18. Motor vehicle door according to Claim 17 with a door inner panel (566) which has an orifice (568) for receiving a carrier of the window lifter.

Images