DE7534188U - WINDOW REGULATORS FOR MOTOR VEHICLES ETC. - Google Patents

Description

The invention relates to a window regulator for vehicles of all kinds, but especially for motor vehicles.

It is known to use so-called pitch cables as such window regulators, in which a single wire with a larger pitch is looped in the manner of a thread around a core of wires or wire strands. This inclined cable is guided in a tube which is slit longitudinally at least in the area that runs parallel to the window lift, and to which a plate with a gearwheel is attached at a suitable point. The teeth of the gear meshing with the helical pitch of the cable, so that this upon rotation of the gear - manually using a crank or by a motor by means of a Elektromomotors -

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longitudinally displaceable in the slotted tube in the manner of a toothed rack is. The pipe can be made according to the installation requirements be bent, but the incline cable can still be moved because it is elastic. A certain one However, as already indicated, part of the tube that is slotted must be straight and parallel to the direction of the window movement, which itself also runs in a straight line.

A driver element is attached to the incline cable, which protrudes with a web through the slot of the tube to the outside and carries the actual guide plate there. To her the window to be moved is attached directly or via intermediate elements.

The immovable attachment of the driver element to the inclined cable can be done in various ways. E.g. it would be conceivable to clamp the element through the pipe contactor on the riser cable after this is already inserted into the pipe. Then the pipe was only needed in the area of the straight line of the window to be slotted. However, it is more practical to fasten the element with the guide plate on the cable before the riser cable is introduced into the pipe. Then must

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however, the tube should be slotted continuously from one end over the entire length up to the area of the straight line of the window. In particular, it is known to use sheet metal with obliquely punched slots at the angle of the incline turning point as the element; this sheet to bend the incline cable in such a way that parts of the incline turn-around come to rest in the elongated holes; and to lead the angled ends of the sheet through the pipe slot to the outside and to attach the actual guide plate to them (DBP 1 219 737).

However, this construction has the major disadvantage that above all the element in the pipe and in the pipe contactor rattles, especially of course when the vehicle is in motion. The same rattle will come from the incline cable itself caused when this hits the inside of the slotted tube.

The invention is therefore based on the object of creating a window lifter in which such a rattling is avoided and also does not occur when the vehicle is moving at a higher speed and / or on uneven terrain.

According to the invention, this object is achieved in that

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The driver element consists of a cylinder-like plastic part injection-molded around the inclined cable and is provided with guide lips, the outer dimensions of which approximate the inner diameter of the pipe to such an extent that the driver element is guided in the pipe with almost no play.

Instead of just providing a few, preferably three, guide lips that are precisely matched to the inner diameter of the pipe are, it is of course also possible to have the entire driver as a plastic part continuously cylindrical to shape and to provide this cylinder with an outer diameter which is approximately adapted to the inner diameter of the pipe.

Although the connection from the driver through ("a pipe contactor to the outside, i.e. the web, is carried out in different ways can be, it is proposed according to the invention, however, to inject this web at the same time on the driver and also to match this web in its thickness exactly to the slot width, so that the web is friction-free in the Slot is movable, but no rattle generated.

The guide plate can then also be attached to this web at the same time be molded for the window. Carrier, bridge

and guide plate then form a unit in one Spraying process can be sprayed onto the incline cable.

In order to get rid of the rattling rattle that came from Inclined cables are created even in the pipe interior, it is proposed to use a wire which is covered with a plastic layer as the helix. But instead of just coating the helix with plastic, you can also use the whole cable be coated with a plastic layer.

The invention is explained in more detail in an exemplary embodiment in the drawing. It, '. «Igen: 1 schematically shows an overview of a window regulator in the installed state,

2 shows a longitudinal section through part of the slotted tube with the inclined cable and sprayed-on driver element, and
3 shows a cross section through the slotted guide tube.

In Figure 1, 1 designates the door of a vehicle in which a window pane 2 can be moved up and down in the direction of the double arrow. The window pane is guided in its movements in the guide strips 3 53a.

A guide tube k is mounted in the door, in which a

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unrecognizable incline cable can be moved. A housing ka is fixedly connected to the tube k , in which a gear wheel is rotatably mounted, which is connected from the outside by means of a ;. ' Crank is rotatable. The gear wheel engages in the helix of the pitch cable in a known manner and moves the pitch cable in the pipe when the gear wheel rotates.

The guide tube k is slotted at least from the end A to approximately the length B. The web of the driver 5 fastened on the inclined cable passes through this slot to the outside and is there firmly connected to a guide plate 5a, which in turn is connected to the window pane 2 again.

If the crank, not shown, is rotated back and forth, the window pane 2 is moved up and down.

The actual invention can be seen from FIGS. In each of these figures, a piece of the guide tube k is shown, in which the inclined cable 6 is guided. The latter is surrounded by the helix 6a.

In particular from FIG. 2 it can now be seen that the inclined cable 6 is injected over a certain length with a driver 5 made of plastic. This plastic driver reaches with its outer diameter over the entire length

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normally not the outer diameter of the incline turnaround 6a * But the driver has guide lips 5b at both ends, the outside diameter of which is precisely matched to the inside diameter of the guide tube k , so that the driver 5 can be moved easily in the guide tube without rattling, but is easy to move .

2 and 3 are at each end of each driver 3 guide lips 5b. But it is obvious That the number of guide lips is in itself irrelevant. There may possibly be fewer lips, e.g. two on the other side, offset by 90 at one end from the other end, can but above all more than three lips. The lips can also be closed into a ring, and finally the entire driver can also be continuously cylindrical and with its outer diameter over the entire length be matched to the inner diameter of the guide tube.

A web ü is molded onto the driver 5 at the same time, which protrudes outward through the slot ka of the guide tube k (Fig. 3) to create. In itself carries the

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Execution of the driver and web in plastic already contributes to the rattling rattle, as it is with the drivers and Web bars made of sheet metal according to the prior art occur to mitigate significantly. But by being as precise as possible Coordination of the outer diameter to the inner diameter of the pipe, or the web thickness to the clear second surface, the noises are reduced even further to a mininru <ii.

The guide plate 5a for the window pane is also molded onto the outside of the web 8. Among other things , it is also made of plastic, it also contributes to noise reduction. It is particularly important, however, that the driver, the web and the guide plate can be produced in one operation by overmolding the riser cable, which enables a significant reduction in production costs.

Apart from mainly producing the driver and the web from plastic and guiding them precisely in the guide tube k , the rattling noise can be further reduced by coating at least the helix 6a in a known manner with a plastic layer. Of course, the entire inclined cable can also be provided with a plastic coating with the same effect. These coatings, be it just the spiral or the entire cable,

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are ideally suited to the rattling of the Reduce the incline cable in the entire pipe significantly. Especially in the places where the cable is free in the Tube lies, and not as at the point of the driver or at the point of engagement of the gear in the Wendel is held in some way.

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Claims (1)

■ a »♦ ■ it ·· · · et · · · Expectations 1.) Window lifter for vehicles of all kinds, but in particular for motor vehicles, which consists of a tube that is longitudinally slotted from one end to at least the area of the window lift, in which a pitch cable of a known type is guided and by a gearwheel that is firmly but rotatably connected to the tube is longitudinally displaceable, and a driver element is attached to the incline cable, which protrudes through the pipe slot to the outside and there is firmly connected to the guide plate for the window, characterized in that the driver element (5) is molded from a cylinder-like around the incline cable (6) There is a plastic part which is provided with guide lips (5b), the outer dimensions of which approximate the inner diameter of the pipe to such an extent that virtually play-free guidance of the driver element (5) in the pipe (4) is guaranteed. 2.) Window lifter according to claim 1, characterized in that the cylinder-like driver element (5) continuously has an outer diameter which is approximated to the pipe inner diameter to such an extent that an almost play-free guidance of the driver element (5) in the tube (4) is guaranteed. - 10 - • rc 4 · U • ft · * ■ - a f f · tr « 5.) Window lifter according to one of claims 1 or 2, characterized in that the molded-on driver (5) is provided with a longitudinal web (8) which protrudes through the tubular contactor (4a) and that its thickness is the clear width of the slot (ka.) is approximated to such an extent that an almost play-free guidance of the web (8) in the slot (ka) is guaranteed. k.) Window lifter according to claim 3, characterized in that the guide plate (5a) for the window (2) is molded onto the web (8) so that the driver (5), the longitudinal web (8) and the guide plate (5a) are in one piece. 5.) Window lifter according to Claims 1 to ¹ I, characterized in that the pitch helix (6a) of the pitch cable (6) consists of a wire which is coated with a plastic layer in a manner known per se. 6.) Window lifter according to claims 1 to ¹ I, h dadurc in that the go3nmte pitch cable (6) has a covering of plastics in a known manner. - 11 -