FR2839350A1 - Tensioner for cable of window opening mechanism comprises tube which is mounted so that it can slide inside wider tube, two tubes being locked in position by pin - Google Patents

Abstract

The tensioner for the cable of a window opening mechanism comprises a tube (14) which is mounted so that it can slide inside a wider tube (12). The two tubes can be locked in position by a pin (16). The smaller tube is biased outwards by a spring (18) which is kept compressed by the pin.

Description

sealing (54, 60).

1 2839350

WINDOW REGULATOR CABLE TENSIONER

AND METHOD FOR MOUNTING WINDOW REGULATOR

  The present invention relates to a window lifter cable tensioner and a window lifter mounting method. The tension of the cable in a window regulator has an influence on the precision of the operation of the window regulator. The precision of the window lifter operation is particularly critical in frameless doors. Two configurations exist in this case, the window remains fixed in the high position at the opening / closing of the door or the window descends / goes back to the opening / closing of the door. The present invention is in the second cast When the door is closed, the window enters the fixed seals in the tone of the vehicle. When the door is opened, the window automatically lowers in order to free itself from the fixed joints in tone. The glass must therefore be moved precisely so as not to obstruct the opening of the door and to be in accordance with the regulations in force (Directive 2000/4 / EC of the European Parliament and Council dated February 28, 2000) the cable in the window regulator, a tensioner is used. A

  problem arises during the installation of the window regulator. The components of the lifter

  wind glass assembled while simultaneously constraining the tensioner in its position allowing the cable to be stretched. This maneuver is complex and slow to perform and

  leads to tightening the cable imprecisely.

  There is therefore a need for a tensioner which does not hamper the mounting of the winder.

  For this, the invention relates to a window tensioner cable tensioner, the tensioner comprising two members defining a cable passage, the members being movable relative to each other along the cable passage, a pin blocking the

relative movement of the two organs.

  Preferably, the pin is removable.

  According to a variant, the pin comprises a gripping hoop.

  Advantageously, the tensioner further comprises a spring for biasing a

  organ in relation to the other organ. The pin can hold the spring compressed.

  According to a variant, the organs have a conduit and a tube, the tube being mobile

in translation along the conduit.

  The invention also relates to a method for mounting a window regulator, the

  window comprising a cable duct along which wind arranged a sheath and a support having a bearing surface, the method comprising the steps of - arrangement of the tensioner, as previously described, on the cable duct between the bearing surface of the support and the sheath,

- removal of the pin.

  A: \ Patents \ 1 8600 \ 1 8637. doc - 03/05/02 -1 7: 5 1-1 / 7 According to a variant, the support is a casing for a cable winding drum.

  According to another variant, the support is a guide rail.

  Other characteristics and advantages of the invention will appear on reading

  the detailed description which follows of the embodiments of the invention, given as

  by way of example only and with reference to the drawings which show: - Figure 1, a perspective view of the cable tensioner according to the invention; - Figure 2, an external view of part of the tensioner of Figure 1; - Figure 3, a perspective view of the cable tensioner according to Figure 1;

  - Figure 4, a top view of part of a window regulator.

  The invention relates to a window tensioner cable tensioner comprising two members defining a cable passage, the members being movable relative to each other along the cable passage so as to tension the cable. The tensioner also comprises a pin blocking the relative movement of the two members; this allows

  to maintain the tensioner in a locked position during the assembly of the window lifter.

  The assembly of the window regulator is made easier.

  Figure 1 shows a perspective view of the cable tensioner according to an embodiment of the invention. The cable tensioner comprises a first and second member 12 and 14 defining a cable passage along the axis in phantom line reference 11. The two members 12 and 14 are movable relative to each other along axis 11 allowing the length of the cable passage to be increased and causing the window lifter cable to be tensioned. The relative movement of the two organs is blocked by a pin 16; the pin 16 allows the two members to be secured together in a relative position in which the cable passage has a freely determined length. In this locked position, the tensioner can be manipulated without the organs separating from one another, which makes it possible to manufacture and manipulate the tensioner independently of its implementation on the window regulator. Figure 1 shows an embodiment of the invention according to which the organs wind a conduit 12 and a tube 14. The tube 14 penetrates into the conduit 12 and is movable in translation along the axis 11. The lifter cable - window passes through the conduit 12 and the tube 14. It is thus possible to more or less tension the cable of the window regulator by increasing or decreasing the length of the cable path in the organs 12, 14. The connection between the two organs can be a helical link of irreversible screw-nut type. The displacement of the support 14 is only possible in the direction allowing the increase in the length of the cable tray in the members 12, 14; in the case where the cable comes to compress the system, displacement is then impossible, the

system being irreversible.

  R: \} 3revets \ 18600 \ 18637.doc - 05/03/02 - 17:51 - 2/7

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  In another embodiment of the connection between the conduit 12 and the pipe 14, the conduit 12 is provided on its internal surface with stop notches cooperating with teeth on the external surface of the tube 14. This makes it possible to move the tube 14 relative to the conduit 12 in one direction along the axis 11, preferably that allowing to increase the length of the cable passage, the notches preventing the movement of the tube 14 in the other sees. Thus the tensioner is irreversible and the

  cable is stressed in tension in the window regulator.

  The members 12 and 14 are immobilized relative to each other by the pin 16. The pin is for example a pin penetrating into practical facing holes through the members 12 and 14. A series of holes along 'a generator of the tube 14 allows to immobilize the tube 14 relative to the conduit 12 in various positions. The pin 16 is inserted during the assembly of the members 12 and 14. This allows the tensioner to remain in a locked position during assembly of the window regulator. In this position, the cable passage through the members is at a

determined length.

  Preferably, the pin 16 is removable which allows it to be removed or tilted when the tensioner is in place on the window regulator and when the latter is assembled. The pin 16 is for example provided with a gripping arch which

  facilitates the removal of the pin 16.

  In the embodiment of Figure 1, the pin 16 is a shaped bracket

  of U. The two parallel branches of the U penetrate into the conduit 12 and the tube 14.

  Preferably the branches of the U penetrate through the conduit 12 through two grooves and 22 and encloses the tube 14. Teeth on the external surface of the tube 14 improve the immobilization of the tube 14 relative to the conduit 12. The branches of the pin 16 in the form of a stirrup wind advantageously elastically deformable by spacing from one another. This makes it possible to separate them to make them penetrate into the grooves, 22 then to release them so that they tighten the tube 14. Advantageously the branches have a portion 17a, 17b of their length which is curved to match the outline of the tube 14 to improve the immobilization of the tube 14. According to FIG. 1, the end 16a, 16b of the branches is bent towards the outside of the U so that

  facilitate the insertion of the pin into the conduit 12.

  FIG. 2 shows an external view of part of the tensioner 10. The conduit 12 is shown on which the two grooves 20 and 22 are practically diametrically opposed. The grooves 20, 22 are made along a direction of the conduit 12. Similar grooves can be made on the tube 14 so that

  the pin 16 passes through the two members 12, 14.

  To ensure continuous tension of the window-lift cable, the member 14 can be resiliently biased in translation relative to the member 12. In FIG. 1, an R: \ Patents \ 18600 \ 1 8637.doc - 03 / 05/02 - I 7:51 - 3/7

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  spring 18 makes it possible to elastically urge the tube 14 in translation relative to the conduit 12. The tube 14 can be provided at one of its ends with a shoulder 15 thus offering the spring a first bearing surface; the spring 18 is also in contact with an end 12a of the duct 12 thus providing a second bearing surface for the spring 18. The translation of the tube 14 towards the interior of the duct 12 compresses the spring 18; in a compression position of the spring 18, the pin 16 is introduced into the conduit 12 so as to immobilize the tube 14 relative to the conduit 12. In this position, the tensioner 10 can be manipulated without the tube 14

either expels from conduit 12.

  Figure 3 shows another perspective view of the tensioner 10 according to the invention. The tensioner 10 also comprises on the end 12b of the conduit 12 a tube 32 of diameter smaller than that of the conduit 12 and which extends along the axis 11. The tube 32 allows better centering of the tensioner 10 around the cable along the axis 11, when the tensioner 10 is assembled on the window lifter. Furthermore, the tensioner also includes a rib 34 along the axis 11 on the tube 32. The rib prevents the tensioner 10 from rotating around the axis 11 when it is assembled.

on the window regulator.

  The invention also relates to a method for mounting a window regulator. Figure 4 shows a top view of part of a window regulator. The lever comprises a cable 25 passing through a protective sheath 26 and traversing a cable path 28. The sheath 26 can be movable along the cable. Along the cable path 28 is also provided a support 30. The support 30 has a support surface 30a through which the cable 25 extends. The support 30 is for example a cursor guide rail or the housing of the cable winding drum. The support 30 is characterized by the fact that it does not include the protective sheath 26. The sheath 26 does not extend beyond the bearing surface 30a towards the interior of the support 30. The method of mounting the window regulator comprises a step of arrangement of the tensioner 10

  on the cable path 28 between the landing surface 30a of the support 30 and the sheath 26.

  The tensioner 10 bears against the sheath 26 and the support 30. The tensioner 10 according to the invention makes it possible to be adapted to any type of support 30 without modification of the support. Thanks to the pin 16, the tensioner remains compressed during the assembly of the window lifter. The method then comprises a step of removing the pin 16 from the tensioner 10. The removal of the pin 16 is a quick and simple operation and makes it possible to make

  the members 12 and 14 movable relative to each other.

  In the embodiment of the pin 16 holding the spring 18 compressed, the withdrawal of the pin 16 generates ['extension of the spring 18. The spring 18 causes the relative displacement of the members 12 and 14. The bearing surface 30a is R : \ Patents \ 18600 \ 18637 doc - 03/05/02 -17: 51- 4n

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  a fixed point for the tensioner 10, allowing it to bear to move the sheath 26 away from the support 30. The displacement of the sheath 26 along the cable 25 increases the

  length of cable tray causing cable tension 25.

  In FIG. 4, the support 30 is the casing of the cable winding drum 25, the member 12 is the duct and the member 14 is the movable tube in the duct 12. The duct 12 is in contact against the bearing surface 30a of the drum casing. The tube 14 bears against the sheath 26. The withdrawal of the pin 16 causes the extension of the spring 18. The conduit 12 bears against the housing 30 and the tube 14 is urged against the sheath 26. The tube 14 is in contact with the sheath 26 through

  the shoulder 15, the latter preventing the tube 14 from sinking into the sheath 26.

  In Figure 4, the tubing 32 penetrates through the support surface 30a which allows centering of the tensioner 10 relative to the support surface 30a. Thus the tubing 32 prevents the tensioner 10 from sliding on the bearing surface 30a and the tensioner urges the sheath 26 in a direction parallel to the cable 25. The rib 34 penetrates through the landing surface 30a. The rib 34 can cooperate with a recess on the housing (not shown) so as to prevent the rotation of the tensioner.

  around the cable 25 on the bearing surface 30a.

  In the case where the support 30 is the guide rail of the cursor, the rail is then

  provided with a channel for receiving the tensioner 10.

  In another embodiment of the tensioner 10, the member 12 can be merged with the support 30. The support 30 is made with openings for the passage of the pin 16. The support 30 is delivered with the member 14 blocked by the pin 16 in the support 30. The advantage is to limit the number of pieces

  separate to manufacture and assemble to mount the window regulator.

  Of course, the present invention is not limited to the embodiments

  described by way of example; thus, the window regulator is of tvpe with double rail with cable in X

  or a single guide rail. Likewise, the window regulator may include more than one tensioner.

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Claims (9)

  1. A window tensioner cable tensioner comprising - two members (12, 14) defining a cable passage, the members being movable relative to each other along the cable passage,   - A pin (16) blocking the relative movement of the two members (12, 14).   2. The tensioner according to claim 1, characterized in that the pin (16) is removable. 3. The tensioner according to claim 1 or 2, characterized in that the pin (16) includes a grip bar.   4. The tensioner according to one of the preceding claims, characterized in that it   further comprises a spring (18) for biasing a member (14) relative to the other organ (12).   5. The tensioner according to claim 4, characterized in that the pin (16) keeps the spring (18) compressed.   6. The tensioner according to one of the preceding claims, characterized in that the   organs (12, 14) wind a conduit (12) and a tube (14), the tube (14) being movable in   translation along the conduit (12).   7. A window lifter mounting method, the window lifter comprising a cable channel along which a sheath (26) and a support (30) having a bearing surface (30a) are arranged, the process comprising the stages of   - arrangement of the tensioner (10), according to one of the preceding claims, on the   cable tray between the bearing surface (30a) of the support (30) and the sheath (26), - removal of the pin (16).   8. The method of claim 7, characterized in that the support (30) is a   cable winding drum housing.   9. The method of claim 7, characterized in that the support (30) is a guide rail.