ES2227404T3 - CABLE MAINTENANCE DEVICE FOR VEHICLE ELEVALUNES. - Google Patents

Abstract

Window regulator (1) of vehicle, comprising: - a moon cursor (2); - a cable (7) that drags the cursor (2); - at least one cable forwarding (5, 6), mounted on a shaft (10); - a tensioner (11, 12) that directly requests the cable (7) in terms of tension, the tensioner (11, 12) presenting a throat (21), sliding the cable through this throat, characterized in that the tensioner is mounted on the shaft (10) and has a protruding portion (25) that holds the cable in the throat.

Description

Cable maintenance device for window regulator

The invention relates to a window regulator for a vehicle, and more particularly to a vehicle window lift that comprises a cursor dragged by a cable that passes through means of forwarding

The recovery of the games during the operation or wear of the window regulator, reduce the tension of the cursor drag cable. In order to keep the cable in Forwarding means, a tensioner of the window lift cable.

US-4 235 046 describes, in the embodiment of Figure 5, a window regulator which presents all the characteristics of the part pre-characterizer of claim 1.

The document US-A-5 778 600 describes a window regulator comprising a cam rotatably mounted on the end of a cursor guide rail. The cam presents, at the level from its periphery, a cable guide throat. The cam is powered by a spiral spring. The cam exerts an effort of tension on the cable.

These windows have complex structures. In addition, its assembly is long and not easy. Moreover, the cable It is sometimes poorly maintained in the forwarding, which can cause noise and eventually window breakdown.

There is a need for a leaf spring that ensure the retention of a cable before mounting the window regulator, and that limits the movements and noise of the cable.

The invention thus relates to a window regulator for vehicle comprising a moon cursor, a cable that drags the cursor, at least one cable forwarding mounted on a shaft, a tensioner mounted on the shaft, which directly requests the cable in terms of tension. The tensioner also has a throat, sliding the cable through this throat, and a protruding portion that holds the cable in the throat.

According to a variant, the tensioner is a spring of sheet.

According to another variant, the spring has been provided with a tip, requesting the spring to the cable by means of the tip.

It can also be foreseen that the throat or the projection is formed by folds (26, 27) of one end of the spring.

According to a variant, the tensioner comprises a flat surface crossed by the axis.

According to another variant, the tensioner also comprises an elastic sheet folded on the periphery of the surface flat.

According to another variant, the window regulator has a stage on which the flat surface has been mounted.

According to another variant, the flat surface it presents means of blocking the rotation of the tensioner in relation to The stage.

The invention also relates to a assembly procedure for a window regulator, which includes the stages for mounting the return and tensioner on the shaft, cable placement in the forwarding, and putting the cable under tension with the help of tensor.

Other features and advantages of the invention they will be revealed by reading the description that follows of embodiments of the invention, given by way of example and with reference to the attached drawings, which show:

Figure 1, a side assembly view of a window regulator according to a preferred mode of the invention;

Figure 2, a perspective view of a window tensioner;

Figure 3, a perspective view of a part of the window regulator in two tension positions;

Figure 4, an exploded view of the part of window lift of Figure 3;

Figure 5, a perspective view of a spring count, and

Figures 6 to 9, perspective diagrams of embodiments of spring ends.

The invention proposes a vehicle window lift according to the characteristics of claim 1, and having a cable forwarding and a cable tensioner mounted on the same axis. He Tensioner directly requests the cable in terms of tension.

Figure 1 presents an example of how to realization of a window regulator 1 according to the invention. The window regulator 1 It comprises a solidarity cursor 2 with a moon not shown. This cursor 2 slides along a guide rail 3 integral with a plate 4. This cursor 2 is arranged between two forwards 5 and 6. The cursor 2 is dragged by a cable 7 that passes through the forwarding 5 and 6. Forwarding 5 and 6 are crossed by a respective axis 9 and 10. Cable tensioners 11 and 12 have been mounted on the same axis 9 or 10 than forwards 5 and 6, respectively. These tensioners 11 and 12 Directly request cable 7 for tension, supporting transversely on the cable. The cable makes a loop, and passes by the drive pulley 8 of an engine.

Forwarding 5 and 6 support to modify cable path Thus, when going through forwarding upper 6, cable 7 can drag cursor 2 up even if it comes from a lower location in the small door. Similarly, when going through lower forwarding 5, cable 7 can drag cursor 2 down even though come from a higher location in the portezuela. The Forwards may be made in the form of pulleys mounted on rotating form on plate 4. Friction is thus limited with the cable, and consequently the wear of the cable and the pulley. Forwarding can also be fixedly mounted. The Forwards may have a substantially cylindrical shape, with a cable guide throat 30. Forwarding can be also made in the form of semi-cylinders.

The window lift in Figure 1 has a tensioner of cable 12 in the form of leaf spring. This spring is represented more accurately in Figure 2. Although the spring described in what follows is a leaf spring, it can be provided also, of course, the use of a wire spring or any other appropriate spring, which is fixed to the same axis as a forwarding The spring has a flat mounting surface 13 in the axis. This surface 13 has a hole 14 that allows the step and shaft retention. This surface is flat, which allows stably disposing against a surface of corresponding receipt of the plate or of a forwarding. It can also provide a non-planar surface adapted to the geometry of the plate or forwarding. This surface may be fixed to the Plate 4 or to a stage. Spring fixing allows you to exercise elastic stresses through the blade 15.

The sheet 15 extends from the periphery of the mounting surface 13. This strip 15 exerts an effort when separates from its equilibrium position, due to its deformation elastic The blade is not integral with the flat surface 13 in a much of its length, and it can be easily stooped. The blade is substantially perpendicular to the flat surface. The sheet It can thus exert an effort substantially perpendicular to the axis. The leaf spring can be formed, for example, by drawing of a metal piece. It can also be expected to be formed by molding

In Figure 3, forwarding 6 and spring 12 they are mounted on axis 10. It can thus be provided to provide a boring 16 on the forwarding 6, to arrange it on the shaft. He forwarding and the spring are arranged on the same axis 10. The window assembly is thus simplified. Axis 10, the spring 12 and forwarding 6 are thus sufficient to ensure the Guided and cable tension. The bulkiness of the cable is seen also reduced. It is possible to intersperse the surface of assembly 13 of the spring between the forwarding and the plate, as has been shown in Figure 3. Forwarding can thus ensure the Spring maintenance after assembly. It can be foreseen also arrange the forwarding between the mounting surface and the license plate.

As shown in Figure 4, the axis You can submit a contention 17 for forwarding retention, by example at one of its ends. The axis 10 crosses the forwarding and the spring. Shaft 10 can be fixed by screwing to plate 4 or a The stage, for example. For this it is possible to make an axis filleted and a plate with a corresponding terrified. So In general, an axis and any fixing means that allow to keep the spring and the return in position in relation to the plate. The axis 10 can be attached, or be realized in a of the window lifter parts. The fact of provide the shaft in the spring, in the return or on the plate, by example.

Figure 3 represents the tension spring in two cable tension positions. In a first position 18, the cable is already extended and the spring does not practically modify its trajectory. In a second position 19, the cable has a lower tension The spring 12 increases the tension of the cable to the move it. The cable is requested directly in tension by the spring. The end of the blade rests transversely on the cable. The spring tends to increase the cable path. The wire It is thus extended.

A tip 20 can be attached to the end of the sheet. A tip of this type has been represented in Figure 5. The cable can then be requested by the spring through the count 20. This count has a throat 21 that ensures the guided and cable slip. The attached annex 20 can be made of a different material than the spring. The 20 count is performs, preferably, on a material that has a low coefficient of friction with the cable. It will also be used, preferably, a material that limits noise during cable offset The count can be set with any appropriate means at the end of the spring 12. It can present, for example, a groove 22 in which the end of the blade, by adhesion. The bottom 23 of the throat 21 exerts the tension stress on the cable. The flanks 24 of the throat ensure the guidance of the cable, and prevent the cable from Get out of the throat of the forwarding. The cable is thus maintained. laterally by the spring. The container presents a portion overhang 25 protruding above throat 21. The portion protrusion allows to limit the movement of the cable, and keep said cable in the throat. The cable stays like this normally in the contact surface Thus, during a crash or during the cable displacement, this cable cannot get out of the throat. This protruding portion 25 can also serve to slide the cable into the throat during assembly, preventing it get out of the throat during subsequent phases of mounting the window regulator It can also be provided that the protruding portion supports  permanently on the cable. The cable can be maintained from this mode between the protruding portion and the contact surface, for also limit an eventual movement.

As schematically represented in the Figures 6 to 9, it is also possible to realize throat 23 by folding the end of the leaf or the spring thread. At example of Figure 6, the end of the sheet has two folds 26 and 27 that form the flanks of a throat 23. These folds are formed substantially at right angles in relation to the contact surface with the cable. In the example in Figure 7, a protruding portion is provided in one of the folds. This protruding portion 25 is substantially parallel, on the surface of contact 23, with the cable. According to the variant of Figure 8, a single fold 28 forms two flanks 24 of throat 21, and a portion projection 25 that prevents the cable from leaving the throat. The variant of Figure 9 presents a single fold that forms two flanks at approximately 120 degrees relative to the surface of contact with the cable. These flanks also act as throat maintenance.

It is possible to prevent the rotation of the spring with relation to a normal axis to the mounting surface giving this surface with a protruding portion. This outgoing portion 29 may move through a recess of the plate. It can be used, naturally, any suitable fixing device.

The invention also relates to a Assembly procedure of a window regulator. This procedure it includes the stages of assembly of the forwarding and of the spring in the axis. The cable is placed in a forwarding throat. The cable is then put under tension with the help of the spring.

The different stages of the procedure can be performed, well understood, in a different order than the one that ends to describe yourself

The present embodiments and the examples should be considered as presented in title illustrative and not limiting, and the invention should not be considered limited to the details provided here, but may be modified keeping within the reach of attached claims. Thus, although the address of the effort exerted by the tensioner on the spring, has been described in the direction of the rail, it can also be provided arrange the spring so that the cable is tensioned in the direction opposite. The invention is also not limited to a window regulator that present two cable tensioners.

Claims (9)

1. Window Winder (1) of vehicle, comprising: - a moon cursor (2); - a cable (7) that drags the cursor (2); - at least one cable forwarding (5, 6), mounted on an axis (10); - a tensioner (11, 12) who directly requests the cable (7) in terms of tension, presenting the tensioner (11, 12) a throat (21), sliding the cable through this throat, characterized in that the tensioner is mounted on the shaft (10) and has a protruding portion (25) that keeps the cable in the throat. 2. The window regulator according to claim 1, characterized in that the tensioner is a leaf spring (12). 3. The window regulator of claim 2, characterized in that the spring is provided with an attached end (20), the spring requesting the cable through the end. 4. The window regulator of claim 2, characterized in that the throat or the protruding formation is formed by two folds (26, 27) of one end of the spring. 5. The window regulator of one of claims 2 to 4, characterized in that the spring comprises a flat surface (14) crossed by the shaft. 6. The window regulator of claim 5, characterized in that the spring further comprises an elastic sheet folded at the periphery of the flat surface. 7. The window regulator of claim 5 or 6, characterized in that the window regulator has a stage on which the flat surface has been fixedly mounted. 8. The window lift of claim 7, characterized in that the flat surface has locking means (29) for the rotation of the spring relative to the plate. 9. Window assembly procedure according to one of claims 2 to 8, comprising the steps from: - assembly of the forwarding and spring in the axis; - cable placement in forwarding, and - put the cable under tension with the help of spring.