DE8138613U1 - Window lifter drives, in particular for motor vehicles - Google Patents

Description

Window lifter drives, in particular for motor vehicles

Claim 1 is based on the preamble of the

DE-OS 30 08 296. From this it is known

the end of the claw part 50 carrying the pinion 63, which is further away from the claw coupling, directly on the housing 6 on the on the housing side remote from the claw coupling. At the Assembly of the window lifter drive for manual operation must have this claw part in the bearing opening of the housing separately to be introduced. Since, for the sake of simplicity, the two coupling parts of the claw coupling mostly only are stacked on top of each other, there is a risk of the attached coupling part with a pre-assembled claw coupling to the. Assembling with the case is lost. In those cases in which on the side facing away from the coupling side Geliäiuseseite optionally an electric rotor drive can be attached Is .the pivot bearing option on this side of the housing for the pinion end or one or the other Claw part very restricted.

The object of the invention is in contrast to the mechanically stable mounting of the claw coupling parts as well of the pinion to facilitate the pre-assembly of the claw coupling as well as the assembly with the housing and possibly also the To facilitate attachment of a motor drive on the housing side remote from the claw coupling.

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This object is achieved by the characterizing part of claim 1 in conjunction with the preamble.

DE-OS 28 30 44 9 deals with one

Cable window regulator. There is consequently no cable drum, so that the inventive idea, the claw clutch-remote End of the pinion or the corresponding claw part on one of the claw coupling side in a To store cable drum mount protruding bearing plate, from this patent application neither previously known nor through this is suggested.

To reduce the overall length, it is proposed that one claw coupling part be on the other claw coupling part is rotatably mounted or vice versa.

It is provided here that a wrap spring brake jacket can be fastened, preferably screwed, to the housing. For coupling the hand crank drive to the housing

To attach the window regulator drive to a door inner skin or a device carrier is used between the hand crank and the wrap spring brake jacket arranged flange.

The innovation is explained below with reference to the drawing of several exemplary embodiments.

^ύ It shows:

Fig. 1 is a sectional view of an embodiment of the window lifter drive according to the invention before assembly;

FIG. 2 shows a section of the arrangement according to FIG. 1 along the line II-II;

only secure the wrap spring brake jacket to the housing |

screws.

«'A β 4 1

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3 shows a sectional view of a second embodiment of the window regulator drive according to the invention;

Fig. 4 is a sectional view of a third embodiment; and

Fig. 5 is a sectional view of a fourth embodiment.

The window lifter drive according to the invention shown in the figures is characterized in that either a hand crank drive or a motor drive can be attached.

In the embodiment shown in Fig. 1 is the The base body is designated by 12, the hand crank drive that can be attached from the left with 14 and the one that can be attached from the right Motor drive with 16.

A drive element for the window lifter is mounted in the base body 12, in the example shown a cable drum 18. A pull cable is wound around this cable drum 18 in a manner not shown, which starts in a closed loop from the cable drum 18 to a deflection at one end of a guide rail, is then ^{guided along 25} the guide rail for deflection at the other end and finally back to the cable drum 18. The pull rope section between the rope drum 18 and the guide rail can run through Bowden tubes. In the area between the deflections, a driver is attached to the pull rope.

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that is slidable along the guide rail and that carries a retaining rail that supports the lower transverse edge encompasses a window pane.

The cable drum 18 is mounted in a two-part housing 20 made up of a front shell 22 and left in FIG. 1 a rear shell 24. The front shell 22 consists of

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a front wall 28 perpendicular to the axis 26 of the cable drum 18 and one protruding perpendicularly from the wall 28 cylindrical collar 30 which engages around the cable drum 18 over half of its axial length. Furthermore is in the lower area the front wall 22 still has a shoulder 32 for attaching one indicated in Fig. 2 with a broken line, Otherwise not shown electric motor 34 is provided in the event that the electric motor does not have a structural unit forms the motor transmission block 36 shown in detail in the figures. In FIG. 2, there is a mounting hole 38 of the electric motor 34 indicated by a fastening, angsbolzen inserted and screwed into a threaded hole 40 of the extension 32.

The front wall 28 is in the area of the cable drum 18 with a passage opening 42 through which a pinion 44 of the hand crank drive 14 can pass in order to engage with an internal toothing 46 of the cable drum 18. In the lower area of the circular passage opening 42 is a wall 4 5 perpendicular to the inside, in the form of a partially hollow cylinder. This wall 4 5 carries a bearing wall 48 which is in turn perpendicular to the axis 26 and has a circular outline. On the outer circumference of the bearing wall 48 the cable drum 18 is rotatably mounted, for which purpose the drum 18 with a central to the axis 26 recess 50 is provided, the cylindrical inner peripheral surface of which 52 rests against the outer circumference of the bearing wall 48. Furthermore, in the bearing wall 48 there is another one at a distance from the axis 26 Bearing opening 54 is provided which receives an axial pinion pin 56 projecting from the pinion 44. The one from the Walls 46 and 48 which are held inside the housing interior and are held in the front wall 28 accordingly form a bearing projection 58 for both the cable drum 18 and for

the pinion 44.
35

The rear shell 24, like the front shell 22, is with

a wall perpendicular to the axis 26, the rear wall 60, is formed, as well as with a cylindrical collar 62 which extends to -. the collar 30 of the front shell 22 tapers so that a hollow cylindrical interior space for receiving the cable drum | 18 forms. A passage opening centered on the axis 26 | Opening 64 in the rear wall 60 allows a bearing shaft 66 and a driving claw part 68 to be inserted into the housing 20. Here, the end of the bearing shaft 66 on the left in FIG. 1 reaches a central bearing opening 70 of the cable drum _:

18. Radial, shown in section in FIG. 2, approximated Star-shaped claws 72 of the driving claw part 68 protrude into a correspondingly complementary star-shaped design Claw recess 74 on the right end face of the cable drum 18 in FIG. 1, possibly with an intermediate layer an elastic intermediate layer 76.

The two housing shells 22 and 24 are after insertion the cable drum 18 screwed or clipped together. :

Of the collar 62, axially projecting barb-shaped clip projections 78 are in the latter case, as Fig. 1 shows, the outer periphery of a Federal, for example molded, the t in corresponding Klippsausnehmungen 80 of the other Federal (see FIG. 1 below) ί engage the 30 . Such a clip connection can, however, also be provided, for example, on the front wall 28, a correspondingly designed clip hook 82 of the fore hand 28 being able to pass through a clip recess 84 which is located in a flange 86 perpendicular to the axis 26 on the left edge of the collar 62 in FIG. can be shaped. The opening 84 can also

^Q also serve to screw the housing 20 to the motor drive 16, more precisely to a motor drive cover 88. As FIG. 2 shows, the motor drive cover 88 is provided with a total of four outwardly projecting fastening tabs 90 into which fastening holes 92 are drilled.

1

The fastening hole 92 | indicated at the top left in FIG is aligned with both the opening 84 of the flange 86 and j

-ιοί also with an opening adjoining the opening 84 94 in the front wall 28 and with an opening 96 in the rear wall.

The cable drum 18 has, on its essentially cylindrical outer circumference, cable grooves that can be seen in FIG 98 provided. In addition to the central mounting of the cable drum 18 on the bearing projection 5P, the cable drum is supported 18 still on the inside of the front or rear wall 28 and 60, in each case via a circumferential, axially protruding projection 100 on one and the other end face of the cable drum 18. The two projections 100 surround the corresponding passage openings 42 and 64 and thus ensure a seal the cable drum 18 encompassing the annular winding space 102 to the outside. This is important because at During assembly, only one drive (the hand crank drive 14 or the motor drive 16) is connected to the housing 20 and therefore one of the two passage openings 42, 64 remains free.

The structure of the motor drive 16 can be seen from FIGS. 1 and 2. The motor drive hood 88 already mentioned forms a bearing point for the end of the bearing pin 66 on the right in FIG. The floor 106 is reinforced by radial stiffening ribs 108. On the bearing shaft 66 rotates a worm gear 110 which meshes _w ith a direction indicated by a broken line screw 112 in FIGS. 1 and 2 below. The worm 112 is attached to the shaft of the electric motor 34, not shown in detail.

The worm wheel 110 rotates the driving claw part 68, with a vibration and shock absorbing layer in between

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Intermediate layer 114. The driving claw part is for this purpose 68 is provided with a total of four axial entrainment projections 116 protruding to the right in FIG. 1, which in FIG. 2 are indicated with a dash-dotted circumference. The driving projections 116 are each saving weight formed with a cavity 118 open to the right. The driving projections 116 are in circular sector-like, Recesses 122 of worm wheel 110 separated from one another by radial webs 120 are used. The driving projections 116 komiron, however, not for immediate application to the webs 120, since the projections 116 from the elastic Intermediate layer 114 are bordered. One between the inner peripheral surface 124 of the worm wheel 10 and one cavity 128 formed towards the outwardly directed step surface 126 of the intermediate layer 114 serves as a compensating space for the elastic intermediate layer 114 consisting for example of rubber in the case of a mutual Rotation of worm wheel 10 and driving claw part 68 Driving claw .teil 68 shaped as a relatively thin circular ring disk 130. The elastic intermediate layer is in this area 114 also designed in a circular shape and clamped between the circular ring disk 130 and the corresponding end face of the worm wheel 10 in a sealing manner.

for sealing the interior of the motor drive hood 88 serves a sealing lip 132 formed in the area of the outer circumference of the elastic intermediate layer 114, which in the area of the edge of the motor drive hood 88 on the

Inside of the hood 134 rests in a sealing manner. 30th

In order to prevent spray water from penetrating between the rear wall 60 and the motor drive hood 88, is on the outer circumference the elastic intermediate layer 114 also has an O-ring like circular ring sealing profile 136 is provided, which during assembly between the circular ring end face 138 and a circumferential sealing web 140 on the rear wall

60 is pinched. Since the circular ring sealing profile 136 is only connected to the disk-shaped elastic intermediate layer 114 via a thin film of material 142, this film 142 tears as soon as the motor drive is set in motion. Here, the sealing profile 136 remains in place, especially when the mutually facing annular surfaces of the web 140 or of the edge of the motor drive hood 88 are each curved inward.
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It should be noted that the entraining claw part is rotatably mounted on a correspondingly far in Fig. 1 projecting to the left bearing neck 144 of the worm wheel 110 68, which ensures stable and compact design Schneckenradlage- ¹ ^ tion.

In the event that the window regulator drive is to be operated manually, the base body 20 in FIG. 1 of on the left hand crank drive 14 attached, then

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^{ω of} course the motor drive 16 is to be omitted. The hand crank drive 14 is provided with a wrap spring brake 150, which consists of a wrap spring 152 which, in its rest position, is supported against the inner circumferential surface of a wrap spring brake jacket 154 and which is

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actuation of a hand crank 156 taken along by a claw part 158 connected to the hand crank 156 in a rotationally fixed manner is and thereby taking along a further claw part 160 from said inner circumferential surface of the

Wrap spring brake jacket 154 releases. The latter 30

Claw part 160 is formed in one piece with the tickle 44. One with the claw part 160 is also one-piece Bearing bracket 162 penetrates the first-mentioned claw part 158 and is finally threaded on by means of a

The nut 164 screwed on the free end of the bolt on the 35

Hand crank 156 set axially. The bolt 162 can

however, turn it with respect to the hand crank 156.

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The rotary coupling between hand crank 156 and claw part
158 is obtained via a bolt provided with external corrugation 168 and integral with the claw part 158, the
into a correspondingly provided with internal rifling

Recording 170 of the hand crank 156 is fitted.

To connect the wrap spring brake jacket 150 to the |

Base body 12 is the jacket 150 with a radially ab-]

standing annular flange 172 provided on the housing 20, '{

i.e., on the front wall 20, is screwable. One |

knows a mounting hole provided with an internal thread \

174, which is aligned with holes 94, 84 and 96 Ij

can be brought. :

For attaching hand crank 156 and wrap spring brake j

se 150 on a door inner skin £ 18 or an equipment rack j

(together with the main body 12 or separately) is a j

Flange 176 is provided. This is supported in an axial ί Direction on the one hand against the edge of a hand crank

at 156 one-piece, open to the right in Fig. 1, to ί

Crank axle 178 centric crank hood 180. Other- \

on the other hand, the flange 176 presses against a radially. inwardly tapering wall 182 of the wrap spring brake jacket

150 (which is located in a storage passage 184 for the \

Claw part 158 carrying bolt 169 continues). At the \

Installation of the window regulator drive, for example on the '

Door inner skin 186 of the motor vehicle door, the j

approaches annular flange 156 into mounting opening j

188 of the door inner skin 186 is used with a |

In FIG. 1, collar 190 protruding to the right. In order to prevent the flange 176 from rotating with the hand crank 156, one or more points on the circumference of the
Flange 176 axial projections 192 be provided,
in corresponding recesses 194 of the door inner skin

³ ^ 186 engage positively.

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It should be added that the nut 156 is covered to the outside by a plate 196, which with the Hood 180 is clipped (clip hook 198),

When assembling the hand crank 156 and wrap spring brake 150 on the T gutter skin 186 is from one side (from the right in FIG. 1) the wrap spring brake 150 with the two claw parts protruding to the left 158 and 160 carrying bolts 169 and 162 through the mounting opening 188. From the other side the flange 176 is pushed on first and finally; the hand crank 156. After unscrewing the nut 146 now only the plate 196 has to be clipped in.

In Fig. 3, a window lift drive designated 210 is shown similar structure to that shown in FIG. Components that correspond to those of the window lifter according to FIG. 1 are each increased by the same reference numerals around the number 200.

The window lifter 210 shown already has the hand crank drive 214 screwed tightly to the base body 212. The alternatively mountable motor drive 216 is interrupted Lines indicated in the position 25

which he assumes after assembly on the base body 212.

The main difference between the arrangements

_ori measured Fig. 1 and Fig. 3 is in the design of the hand

crank drive 214. The wrap spring brake jacket · 354 is now more or less closed off to the right in FIG. 3 by a bearing plate 201. The bearing plate 201 has a radial, circular ring-like circumferential area 203, which is attached to the likewise radial flange 372 of the wrap spring brake jacket 354 is flat. In Fig. 3 below a through riveting 205 can be seen, the two parts

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rigidly connects with each other. In the area of the pinion 244, the bearing plate 201 is provided with a cross-section in FIG. 1 has an approximately Z-shaped bearing lug 207 which engages in the recess 252 of the cable drum 218. That approximated The radial end of the bearing lug 207 is formed with a bearing passage 209 which has a bearing pin 211 records. The bearing pin 211 extends from the claw part, which is connected in a rotationally fixed manner to the hand crank (not shown) 358 bearing bolt 369 from. On the bearing pin 211, the pinion 244 as well as the one-piece with the pinion other claw part 36 0 rotatably mounted. Both claw parts 358 and 360 are in turn via the loop spring 352 coupled together. Around the pinion 244 in engagement with the corresponding internal toothing 246 of the cable drum to get, is the bearing plate 201 with a corresponding Recess 213 is formed.

The bearing lug 207 could, corresponding to the bearing projection 58 in FIG. 1, also for the rotary bearing of the cable drum 218 be trained. However, in order to have a sufficiently stable rotary bearing even in the case of an electric motor drive To reach the cable drum 218, this is rotatably mounted on the two shells 222 and 224 of the base body 212. For this purpose, the two drum edges 219 and 221 of Guide webs 223 and 225, respectively, which are formed on the inside of the front wall 228 and the rear wall 260, respectively are.

For fastening the hand crank drive 214 to the base body

212 are used screw bolts 227, one of which is shown in Fig. 3 at the top. He supports himself with his head 229 Bolt 227 on the rear shell 224; the bolt 227 penetrates the front shell 222 and is threaded with its bolt 231 is screwed into a corresponding internal thread 233 of the bearing plate 201. As mentioned earlier, is the bearing plate 201 fixed to the wrap spring brake 350

-16-connected with the help of the pull-through rivets 205.

If the motor drive is used instead of the hand crank drive 214 216 mounted on the base body 212, the result in Fig. 3 arrangement indicated by dashed lines. The bearing pin 266 engages in the corresponding recess 270 in the cable drum 218 a. The driving claw part 268 engages with its claws 272 in correspondingly shaped recesses 276 of the cable drum 218, if necessary with the interposition of an elastic intermediate layer. Driving projections 316 of the Driving claw part 268 couple this with the worm wheel 310 also with the interposition of an elastic one Intermediate layer. One recognizes in Fig. 3 a crack gap 235 between the circular ring sealing profile 336 and the elastic Intermediate layer 314. In contrast to FIG. 1, the elastic intermediate layer 314 has a sealing lip 237 is provided, which rests against an inner peripheral surface 239 of the worm wheel 310 in a sealing manner.

4 and 5 are further embodiments of the invention Window lifters shown, which are designated by 410 and 610, respectively. In both cases it is the version with hand crank drive. In both cases, of course, an electric motor drive can also be used as an alternative be attached.

Components in FIG. 4 which correspond to those in FIG. 1 are given the same reference numerals, in each case increased by the Number 400 provided. Accordingly, components in FIG. 5 are provided with reference numbers increased by 600 compared to FIG. 1.

Hand crank drives 414 and 614 differ from the hand crank drives 14 and 214 essentially by that the wrap spring brake is omitted. The each-

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Sometimes hand crank 556 or 755 is therefore directly with the pinion 444 or 644 rotatably connected. The two embodiments 410 and 610 according to FIGS. 4 and 5 differ only in the different axial position securing of the pinion 444 or 644 on the base body 412 or 612.

According to FIG. 4, the pinion 444 is formed in one piece with the bolt 568, which at its remote from the pinion 444 End of an enlarged diameter, with external reefing provided head 569 carries. The head 569 is in a correspondingly fluted recess in the crank cover 580 used non-rotatably. A plug 696 serves to cover the head 569 to the outside.

The structure of the base body 412 essentially corresponds to that of the base body 12 in FIG Front wall 422 of the two-shell housing 420 is formed with a bearing projection 458, which both the rotary bearing the cable drum 418 as well as the rotary bearing of a pinion pin 456 projecting axially from the pinion 444. Both housing shells 422 and 424 can in turn be clipped to one another.

The front wall 422 is additionally provided with a bearing neck 571, which forms a rotary bearing for the bolt 568. To axially secure the bolt 568 is this is provided with a circumferential groove 573 into which several barb-like projections distributed over the circumference

^ O 5-75 intervene. These projections 575 are at their in Fig. 4 left side with an inclined ramp surface and formed on its right side in Fig. 4 with a radial support surface, so that although an insertion of the Bolt 558 in Fig. 4 from left to right is possible (with the projections 575 yielding radially), but not a bolt shift in the opposite direction.

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As FIG. 4 shows, the base body 412 is direct attached to a door inner skin or a device carrier 586. The bearing neck 571 penetrates a corresponding earth Mounting opening 588 of the device carrier 586.

Fastening projections 579 carrying internal threads 577 and projecting perpendicularly from the device carrier 586 engage in corresponding ones Openings 494 and 484 of the front shell 422 and the rear shell 424, respectively. Support bolt 581 with their Allen screw heads 583 on the rear shell 424 and are screwed with their bolt thread 585 into the mentioned inner thread 577.

The one at an early stage of installation of the window regulator The base body 412 screwed to the device support 586 can therefore optionally be used in a later assembly step either supplemented by a hand crank drive 414 or by a motor drive (not shown in FIG. 4). In the former case, only the hand crank 556 with the bolt 568 in Fig. 4 has to be attached from the left, The motor drive would accordingly have to be plugged onto the base body 412 from the right in FIG. 4.

The window regulator drive 610 shown in FIG. 5 differs from the window regulator drive 410 according to FIG. 4 only in that instead of the axial fixation by groove 573 and projections 575 an axial fixation is selected by means of a self-locking lock washer 781. You can see protruding radially inwards Spreading tabs 783 of the locking washer 781, which are located at 0

pulling out the bolt 768 (to the left in FIG. 5) increasingly dig into the outer circumference of the pinion pin 656.

The attachment of the base body 612 to the equipment carrier 786 is also somewhat simplified. The bolts 781 are namely directly into the corresponding through-tapped holes

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-19-1 777 of the device carrier 786 screwed in.

The cable drum 618 is stored accordingly 3 on the housing 620, that is to say, in turn, webs 823 and 825 encompassing the cable drum rims 819 and 821.

In the illustrated embodiments, a drive member mounted in the housing is a cable drum Cable window regulator. However, a toothed sector of a link window lifter can also be used as a drive element, for example.

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summary

In the case of a window regulator drive for motor vehicles, proposed to use a base body (12) which houses a cable drum (1S) and optionally to which either a hand crank drive (14) or a motor drive (16) can be attached. The housing (20) of the Base body (12) on one side of the housing with a passage opening (42) designed for a pinion (44) of the hand crank drive (14) and on the opposite one Side with a passage opening (64) for a driving claw part (68) of the motor drive ^ (16). Both the pinion (44) and the driving claw part (68) act directly on the cable drum (18).

Fig. 1

Claims (4)

1. Window lifter drive, in particular for motor vehicles, comprising a cable drum mounted in a housing and a hand crank drive with a wrap spring brake with a wrap spring brake jacket that can be fastened to the housing as part of a claw coupling, one of which is a claw coupling part with an inner circumferential toothing the cable drum engaging pinion is rotatably connected and the other claw coupling part is non-rotatably connected to the hand crank, characterized in that the wrap spring brake jacket (354) a bearing plate (201) is attached, which from the claw coupling side of the Housing through a housing opening into a central receptacle (252) of the cable drum (218) protrudes and dc-t the pinion end further away from the claw coupling, possibly the corresponding end of the one or the other claw part (358) holding the pinion rotatably, preferably by means of a bearing passage (209) in the bearing plate (201) for a pinion pin (211) of the pinion or one or the other other claw part (358). «· * I 1 t 2. Window lifter according to claim 1, characterized in that the one claw coupling part (360) is rotatably mounted on the other claw coupling part (358) (Fig. 3) or vice versa (Fig. 1). 3. Window lifter according to claim i or 2, characterized in that a wrap spring brake jacket (154; 354) can be fastened to the housing (20), preferably fixedly screwed. 10 4. Window lifter according to one of claims 1 to 3, characterized by an between the hand crank (156) and the wrap spring brake jacket (154) arranged flange (17 6) for fastening of the window regulator drive on a door inner skin (186) or an equipment rack. 20th 25th 30th 35